Timber position adjusting device, tiller, water area propeller and water area movable equipment

Abstract

A tiller position adjusting device, tiller, water area propeller and water area movable equipment wherein the tiller position adjusting device (100) comprises a frame (10), a tiller connecting piece (20) and a locking assembly (30), the frame (10) is used for coupling with a host of the water area propeller (300), the tiller connecting piece (20) is used for coupling with a tiller body (201), the locking assembly (30) connects the tiller connecting piece (20) and the frame (10), and the tiller connecting piece (20) is used for coupling with the tiller body (201). When the locking assembly (30) is in the first state, the tiller connecting piece (20) can be allowed to be adjusted to any position relative to the rack (10) in the preset direction, the tiller connecting piece (20) is locked to be adjusted to the position opposite to the rack (10) in the preset direction, and when the locking assembly (30) is in the second state, the tiller connecting piece (20) can be allowed to be adjusted to any position relative to the rack (10) in the preset direction or in the direction opposite to the preset direction. According to the tiller position adjusting device (100), the locking assembly (30) capable of being switched to different states is arranged between the tiller connecting piece (20) and the rack (10), so that the tiller connecting piece (20) can be locked after being adjusted to any position in a stepless mode relative to the rack (10), and various requirements for position adjustment of the tiller (200) are met.

Description

Tiller position adjustment device, tiller, water area propeller and water area movable device Technical Field

[0001] The present application relates to the technical field of ship equipment, and in particular to a tiller position adjustment device, a tiller, a water area propeller, and a movable device in water area. Background Art

[0002] For ease of operation, outboard motors are often equipped with a tiller, allowing users to adjust the motor's direction and thus change course. However, existing tillers are typically fixed relative to the outboard motor's main engine or can only be adjusted to a few positions, which can be inconvenient. Faced with varying operating position requirements, adjusting the tiller to any desired position has become a pressing technical challenge.

[0003] Summary of the Invention

[0004] The present application provides a tiller position adjustment device, a tiller, a water area propeller and a water area movable device to solve the above technical problems.

[0005] An embodiment of the present application provides a tiller position adjustment device, comprising:

[0006] a frame for coupling with a main engine of a water propulsion system;

[0007] A tiller connecting piece, used for coupling with the tiller body;

[0008] A locking assembly connects the tiller connecting member and the frame. When the locking assembly is in a first state, it allows the tiller connecting member to be adjusted to any position relative to the frame along a preset direction, and locks the tiller connecting member from being adjusted relative to the frame in the opposite direction of the preset direction. When the locking assembly is in a second state, it allows the tiller connecting member to be adjusted to any position relative to the frame along the preset direction or in the opposite direction of the preset direction.

[0009] In this way, by providing a locking assembly that can be switched to different states between the tiller connecting piece and the frame, the tiller connecting piece can be infinitely adjusted to any position relative to the frame and then locked, meeting various needs of tiller position adjustment.

[0010] An embodiment of the present application further provides a tiller, comprising a tiller body and the tiller position adjustment device described in the above embodiment, wherein the tiller body is coupled to the tiller connector.

[0011] An embodiment of the present application also provides a water thruster, comprising a tiller, a propulsion main engine, a propeller, and the tiller position adjustment device described in the above embodiment, wherein the propulsion main engine is connected to the propeller, and the tiller position adjustment device couples the tiller and the propulsion main engine for adjusting the operating position of the tiller.

[0012] The implementation of the present application also provides a movable water area device, comprising a carrier and the water area propeller described in the above embodiment, wherein the water area propeller is installed at one end of the carrier and is used to propel the carrier. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0014] FIG1 is a schematic structural diagram of a tiller position adjustment device according to an embodiment of the present application.

[0015] FIG2 is a schematic cross-sectional view of the tiller position adjustment device shown in FIG1 .

[0016] FIG3 is a force analysis diagram of the local structure shown in FIG2 .

[0017] FIG4 is a schematic structural diagram of a tiller arm connecting member in the tiller arm position adjustment device shown in FIG1 .

[0018] FIG5 is a schematic structural diagram of the tiller position adjustment device shown in FIG2 in a modified embodiment.

[0019] FIG6 is a schematic structural diagram of the tiller position adjustment device shown in FIG2 in a modified embodiment.

[0020] FIG7 is another cross-sectional structural diagram of the tiller position adjustment device shown in FIG1 .

[0021] FIG8 is a schematic structural diagram of the tiller position adjustment device shown in FIG1 in a modified embodiment.

[0022] FIG9 is a schematic structural diagram of a tiller position adjustment device in another embodiment.

[0023] FIG10 is a side view of the tiller position adjustment device shown in FIG9 .

[0024] FIG11 is a force analysis diagram of the local structure shown in FIG9 .

[0025] FIG12 is a schematic cross-sectional view of the tiller position adjustment device shown in FIG9 .

[0026] FIG13 is a schematic structural diagram of the tiller position adjustment device shown in FIG9 in a modified embodiment.

[0027] FIG14 is a schematic cross-sectional view of the tiller position adjustment device shown in FIG13 .

[0028] FIG15 is a schematic structural diagram of the tiller position adjustment device shown in FIG10 in a modified embodiment.

[0029] FIG16 is a schematic structural diagram of the tiller position adjustment device shown in FIG10 in a modified embodiment.

[0030] FIG17 is a schematic structural diagram of a tiller position adjustment device in another embodiment.

[0031] FIG18 is a partial structural front view of the tiller position adjustment device shown in FIG17 .

[0032] FIG19 is a schematic structural diagram of the structure shown in FIG18 in another state.

[0033] FIG20 is a schematic structural diagram of the tiller position adjustment device shown in FIG17 in a modified embodiment.

[0034] FIG21 is a schematic structural diagram of the tiller position adjustment device shown in FIG17 in a modified embodiment.

[0035] FIG22 is a schematic structural diagram of the structure shown in FIG18 in another direction.

[0036] FIG23 is a schematic structural diagram of a propeller in one embodiment.

[0037] FIG24 is a schematic structural diagram of a movable device in water area in one embodiment.

[0038] Description of main component symbols:

[0039] Tiller position adjustment device 100 step surface 322

[0040] Frame 10 inclined surface 323

[0041] Base 11 Rotation hole 33

[0042] The first elastic member 34 of the supporting portion 12

[0043] First abutting surface 121 Second locking block 35

[0044] Second abutting surface 122 Second contact surface 351

[0045] First limiting member 13 Third locking block 36

[0046] Second limiting member 14 first curved surface 361

[0047] Rotating member 15 second curved surface 362

[0048] Rotating shaft 151 Fourth locking block 37

[0049] Cage 16 Slide groove 38

[0050] Support portion 161 first section 381

[0051] Connecting plate 162 second section 382

[0052] Bearing 17 third section 383

[0053] Outer arc surface 171 Positioning protrusion 384

[0054] Stationary wheel 18 Unlocking member 41

[0055] First part 181 eccentric arc surface 411

[0056] Second portion 182 Second elastic member 42

[0057] Through hole 183 Knob 43

[0058] Tiller connecting member 20 Sixth elastic member 50

[0059] Rotating portion 21 Limiting member 60

[0060] Protrusion 211 Limiting recess 61

[0061] Groove 212 Limit bearing 70

[0062] Propelling unit 22 tiller 200

[0063] Limiting protrusion 23 Tiller body 201

[0064] Protrusion 24 Water propeller 300

[0065] The third elastic member 25 propels the main unit 301

[0066] Fourth elastic member 26 mounting bracket 3011

[0067] Fifth elastic member 27 Main body 3012

[0068] Locking assembly 30 Propeller 302

[0069] First locking block 31 Water area movable device 400

[0070] First contact surface 311 Carrier 401

[0071] Rotating column 312 Carrying compartment 4011

[0072] Limiting wheel 32 protrusion 321

[0073] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0074] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0075] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be an element centered therein. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may also be an element centered therein. When an element is considered to be "set on" another element, it may be directly set on the other element or there may also be an element centered therein. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0076] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "or / and" as used herein includes any and all combinations of one or more of the relevant listed items.

[0077] Some embodiments of the present application are described in detail. In the absence of conflict, the following embodiments and features of the embodiments can be combined with each other.

[0078] Referring to Figure 1, an embodiment of the present application provides a tiller position adjustment device 100, which includes a frame 10, a tiller connector 20 and a locking assembly 30. The frame 10 is used to couple with the main engine of the water propulsion device. The tiller connector 20 is used to couple with the tiller body. The locking assembly 30 connects the tiller connector 20 and the frame 10. When the locking assembly 30 is in a first state, the tiller connector 20 can be allowed to be adjusted to any position relative to the frame 10 along a preset direction, and lock the tiller connector 20 from adjusting its position relative to the frame 10 in the opposite direction of the preset direction. When the locking assembly 30 is in a second state, the tiller connector 20 can be allowed to adjust its position relative to the frame 10 in the preset direction or in the opposite direction of the preset direction.

[0079] It is understood that when the tiller connector 20 is adjustable relative to the frame 10 along a preset direction, the locking assembly 30 is rotatable relative to the tiller connector 20 about a certain axis. When the locking assembly 30 locks the tiller connector 20, the locking assembly 30 abuts against the tiller connector 20 and self-locks relative to the tiller connector 20 in the opposite direction of the preset direction, thereby limiting the adjustment of the tiller connector 20 relative to the frame 10. The preset direction is the counterclockwise direction from the perspective of FIG. 2 , i.e., the direction indicated by arrow A. The opposite direction of the preset direction is the clockwise direction from the perspective of FIG. 2 , i.e., the direction opposite to arrow A. The tiller handle connector is rotated and adjusted to different positions along a preset direction, so that the height of the controllable part of the avoidance connector can be adjusted, thereby adapting to different driving operating positions of the operator when driving while sitting or standing, or people of different heights; after the position of the tiller handle connector is adjusted, the locking assembly 30 locks the tiller handle connector 20, which can prohibit the tiller handle connector from returning to the position, thereby stabilizing the control position of the tiller handle connector 20; by unlocking the locking assembly 30, the tiller handle connector 20 can be rotated in the opposite direction of the preset direction, so that the operating position of the tiller handle body can be adjusted in reverse to quickly return the tiller handle connector to the initial position.

[0080] Furthermore, in an optional embodiment of the present application, the locking assembly 30 has a first locking curved surface, and the tiller arm connector 20 has a second locking curved surface, with the first locking curved surface detachably contacting the second locking curved surface. When the locking assembly 30 is in a first state, the first locking curved surface contacts the second locking curved surface and self-locks relative to the second locking curved surface in the opposite direction of a predetermined direction, thereby restricting the tiller arm connector 20 from adjusting its position relative to the frame 10 in the opposite direction of the predetermined direction. When the locking assembly 30 is in a second state, the first locking curved surface can separate from the second locking curved surface or be in a critical state where relative movement is possible.

[0081] In the embodiment of the present application, the first locking curved surface and the second locking curved surface are respectively provided on two parts of the locking assembly 30 that cooperate with the tiller arm connector 20. The two cooperating parts can rotate and cooperate with each other as the tiller arm connector 20 rotates relative to the frame 10, or simultaneously rotate and slide, or slide, or roll. In other words, the cooperation between the first locking curved surface and the second locking curved surface includes, but is not limited to, rotational cooperation, sliding cooperation, rolling cooperation, etc.

[0082] In an optional embodiment of the present application, the locking assembly 30 can be connected to an operating member, which includes but is not limited to a knob, a paddle, a bump, a push rod, a handle and other structures, and is used to apply external force to the locking assembly 30, drive the locking assembly 30 to separate the first locking surface from the second locking surface, and place the locking assembly 30 in the second state.

[0083] In an embodiment of the present application, the curvatures of the first locking surface and the second locking surface are different, and the first locking surface and the second locking surface are in contact in a tangential form. When the tiller handle connecting member 20 rotates in different directions, the angle between the line connecting the rotation center and the tangent point of the first locking surface and the line connecting the rotation center and the tangent point of the second locking surface will change. The change in the angle can enable the first locking surface and the second locking surface to switch between a self-locking state and a relative rotation state.

[0084] When the first locking surface and the second locking surface are self-locking, the rotation center of the first locking surface, the rotation center of the second locking surface, and the tangent point between the first and second locking surfaces are not collinear. The angle between the line connecting the rotation center of the first locking surface and the tangent point and the line connecting the rotation center of the second locking surface and the tangent point is less than the friction angle of the first locking surface at the tangent point.

[0085] The friction angle refers to the angle between the total reaction force (the combined normal reaction force and the maximum static friction force) and the normal direction, when an object is in a critical sliding state and static friction reaches its maximum value. When the angle between the thrust applied to the object and the normal direction is less than the friction angle, the object cannot slide; in other words, the object and the surface on which it rests are in a frictionally self-locking state.

[0086] When the angle between the line connecting the rotation center and the tangent point of the first locking surface and the line connecting the rotation center and the tangent point of the second locking surface is greater than the friction angle of the first locking surface at the tangent point, the first locking surface and the second locking surface can rotate relative to each other.

[0087] Furthermore, the locking assembly 30 is elastically connected to the frame 10 so that the locking assembly 30 can detachably contact the tiller connecting member 20 to achieve switching of the locking assembly 30 between the first state and the second state.

[0088] The elastic member on the locking assembly 30 is used to apply elastic force to the locking assembly 30 against the tiller connector 20, so that the locking assembly 30 can cooperate with the tiller connector 20 without actively applying an action force. Therefore, the tiller connector 20 can be locked or unlocked with the locking assembly 30 by simply switching the rotation direction. The elastic member can be any one of a torsion spring, a rectangular spring, and a butterfly spring.

[0089] In one embodiment of the present application, please refer to Figures 1 and 2, the tiller handle connector 20 includes a pushing portion 22 and a rotating portion 21 connected to each other. The pushing portion 22 is used to couple the tiller handle body so that the tiller handle connector 20 and the tiller handle body remain relatively fixed. The coupling method of the pushing portion 22 and the tiller handle body includes but is not limited to threaded connection, indirect connection, direct connection, clamping and the like, as long as the tiller handle connector 20 and the tiller handle body remain relatively fixed. The tiller handle body includes but is not limited to structures such as handles, operating levers, and wheels. The locking assembly 30 includes a limiting wheel 32, and the limiting wheel 32 is provided on the frame 10. The limiting wheel 32 is provided with a rotating hole 33, and the rotating portion 21 is rotatably connected to the frame 10 and is provided in the rotating hole 33, and the rotating portion 21 is detachably coupled to the inner wall of the rotating hole 33. When the limiting wheel 32 is in the first state, the rotating portion 21 can be adjusted to any position relative to the frame 10 along a preset direction, and the rotating portion 21 is locked from adjusting its position relative to the frame 10 in the opposite direction of the preset direction. When the limiting wheel 32 is in the second state, the rotating portion 21 can be adjusted to any position relative to the frame 10 along the preset direction or in the opposite direction of the preset direction.

[0090] In this embodiment, the position-limiting wheel 32 is in a first state, wherein it can be adjusted relative to the frame 10 in a predetermined direction but cannot be adjusted relative to the frame 10 in the opposite direction of the predetermined direction. The position-limiting wheel 32 is in a second state, wherein it can be adjusted relative to the frame 10 in the predetermined direction or in the direction of the predetermined direction. When the pusher 22 is adjusted relative to the frame 10 in the predetermined direction, the rotating portion 21 may separate from the inner wall of the rotating hole 33 or enter a critical state of relative rotation. When the pusher 22 has a tendency to adjust relative to the frame 10 in the opposite direction of the predetermined direction, the rotating portion 21 may self-lock with the inner wall of the rotating hole 33. Based on this, when the limiting wheel 32 is in the first state, if the rotating portion 21 is adjusted relative to the frame 10 along the preset direction, the limiting wheel 32 does not restrict the movement of the rotating portion 21. If the rotating portion 21 has a tendency to move relative to the frame 10 in the opposite direction of the preset direction, the rotating portion 21 is self-locked with the inner wall of the rotating hole 33, and the movement of the limiting wheel 32 in the first state in the opposite direction of the preset direction is restricted, so the rotating portion 21 is also restricted from adjusting its position relative to the frame 10 in the opposite direction of the preset direction. When the limiting wheel 32 is in the second state, if the rotating portion 21 has a tendency to move relative to the frame 10 in the opposite direction of the preset direction, the limiting wheel 32 moves synchronously with the rotating portion 21. If the rotating portion 21 is adjusted relative to the frame 10 in the preset direction, since the limiting wheel 32 is separated from the rotating portion 21 or is in a critical state where it can rotate relative to the frame 10, and the movement of the limiting wheel 32 in the preset direction is not restricted, the rotating portion 21 can be adjusted to any position relative to the frame 10 in the preset direction. The tiller arm position adjustment device 100 further includes an unlocking member 41 for switching the limiting wheel 32 to the first state or the second state.

[0091] In the embodiment of the present application, the pushing portion 22 can be locked to the tiller body via fasteners such as bolts, and the rotating portion 21 and the pushing portion 22 are integrally connected. By pushing the tiller body, the user can drive the pushing portion 22 and the rotating portion 21 of the tiller connector 20 to move synchronously. When the movement of the rotating portion 21 is restricted, the restriction is also transmitted to the tiller body via the pushing portion 22. By switching the state of the limiting wheel 32, the rotating portion 21 can be adjusted to any position relative to the frame 10 and then locked, thereby achieving infinite adjustment of the tiller body's position, meeting various tiller position adjustment requirements.

[0092] Furthermore, the locking assembly 30 includes a first locking block 31. One end of the first locking block 31 is rotatably connected to the rotating part 21, and the first locking block 31 and the rotating part 21 can be rotatably connected through a rotating column 312; the other end of the first locking block 31 protrudes relative to the peripheral side wall of the rotating part 21 and can detachably contact the inner wall of the rotating hole 33. When the first locking block 31 contacts the inner wall of the rotating hole 33, the first locking block 31 self-locks relative to the inner wall of the rotating hole 33 in the opposite direction of the preset direction. In this embodiment, along the radial direction of the limiting wheel 32, the first locking block 31 is roughly a wedge-shaped block that is wide on the outside and narrow on the inside, and the end of the first locking block 31 that protrudes relative to the peripheral side wall of the rotating part 21 has a first contact surface 311. The first contact surface 311 is an eccentric curved surface. When the first locking block 31 is self-locked with the inner wall of the rotating hole 33, the contact point between the first contact surface 311 and the inner wall of the rotating hole 33 is the point on the first contact surface 311 that is at the largest distance from the rotation center of the limiting wheel 32. With this point as the starting position, the distance between the first contact surface 311 and the rotation center of the limiting wheel 32 gradually decreases in the opposite direction of the preset direction, that is, in the clockwise direction.

[0093] In this embodiment, the inner wall of the rotating hole 33 serves as the aforementioned first locking curved surface, a circumferential surface located on the inner ring of the limiting wheel 32. The first contact surface 311 serves as the aforementioned second locking curved surface. When the rotating portion 21 drives the first locking block 31 to rotate relative to the rotating hole 33 in different directions, the first contact surface 311 detachably contacts the inner wall of the rotating hole 33 due to changes in the relative motion between the first contact surface 311 and the inner wall of the rotating hole 33.

[0094] The frame 10 includes a base 11. The rotating portion 21 is generally disc-shaped and rotatably connected to the base 11 via a rotating shaft. The limiting wheel 32 is coaxial with the rotating portion 21, meaning that the limiting wheel 32 and the rotating portion 21 are rotatably connected to the base 11 via the same rotating shaft. When the rotating portion 21 rotates relative to the frame 10 in a predetermined direction, the first contact surface 311 can separate from the inner wall of the rotating hole 33 or enter a critical state of relative rotation, and the limiting wheel 32 does not restrict the movement of the rotating portion 21. When the rotating portion 21 has a tendency to rotate relative to the frame 10 in the opposite direction of the predetermined direction, the first contact surface 311 abuts against the inner wall of the rotating hole 33, and the first locking block 31 self-locks with the inner wall of the rotating hole 33 in the opposite direction of the predetermined direction, thereby maintaining the rotating portion 21 and the limiting wheel 32 relatively fixed. If the limiting wheel 32 is restricted from rotating in the opposite direction of the predetermined direction, the rotating portion 21 is also locked.

[0095] The locking assembly 30 also includes a first elastic member 34, which is supported between the first locking block 31 and the rotating portion 21. The first elastic member 34 is configured to force the first locking block 31 into contact with the inner wall of the rotating hole 33. Specifically, the first elastic member 34 is configured to apply an elastic force to the first locking block 31. When the rotating portion 21 rotates relative to the frame 10 in a predetermined direction, the elastic force of the first elastic member 34 tends to cause the first locking block 31 to rotate in the opposite direction of the predetermined direction about the rotation center of the rotating portion 21. The first contact surface 311 of the first locking block 31 forms a dynamic friction relationship with the inner wall of the rotating hole 33, or loses contact. Slippage occurs between the rotating portion 21 and the limiting wheel 32, and the limiting wheel 32 does not rotate synchronously with the rotating portion 21. In the initial stages of rotation of the rotating portion 21, the limiting wheel 32, under the action of friction, moves a short distance with the rotating portion 21 before remaining stationary. When the rotating portion 21 has a tendency to rotate relative to the frame 10 in the opposite direction of the preset direction, the elastic force of the first elastic member 34 tends to cause the first locking block 31 to rotate about the rotation center of the rotating portion 21 in the preset direction until the first contact surface 311 contacts the inner wall of the rotating hole 33. A self-locking mechanism is formed between the first contact surface 311 and the inner wall of the rotating hole 33, thereby maintaining the rotating portion 21 and the limiting wheel 32 relatively fixed. When the self-locking mechanism is formed between the first contact surface 311 and the inner wall of the rotating hole 33 to maintain the rotating portion 21 and the limiting wheel 32 relatively fixed, if the limiting wheel 32 is in the first state, neither the rotating portion 21 nor the limiting wheel 32 can rotate relative to the frame 10 in the opposite direction of the preset direction. If the limiting wheel 32 is in the second state, the rotating portion 21 and the limiting wheel 32 can rotate synchronously in the opposite direction of the preset direction.

[0096] Referring to Figure 3 , in this embodiment, optionally, when the first contact surface 311 and the inner wall of the rotating hole 33 form a self-locking connection, the first contact surface 311 and the inner wall of the rotating hole 33 are tangent at a tangent point A. The tangent point A here refers to a geometric feature within the cross-section shown in Figure 3 . In an actual product, the contact between the first contact surface 311 and the inner wall of the rotating hole 33 may appear as a tangent line due to the thickness of both. The center point O of the rotating portion 21, the rotation center O1 of the first locking block 31, and the tangent point A are not collinear. The angle α between the line connecting the rotation center O1 of the first locking block 31 and the tangent point A (the line of action of the force exerted by the rotating column 312 on the first locking block 31) and the line connecting the tangent point A and the center point O of the rotating portion 21 is less than the friction angle φ of the first contact surface 311 on the inner wall of the rotating hole 33.

[0097] The friction angle refers to the angle between the total reaction force (the combined normal reaction force and the maximum static friction force) and the normal direction, when the object is in a critical sliding state and static friction reaches its maximum value. When the angle between the thrust applied to the object and the normal direction is less than the friction angle, the object cannot slide, indicating that the object and the surface on which it rests are in a frictionally self-locking state.

[0098] Specifically in this embodiment, as shown in Figure 3, taking the first locking block 31 located at the top as an example, when the rotating part 21 rotates clockwise, the first locking block 31 has a tendency to rotate clockwise and maintains its position under the support of the first elastic member 34. At the same time, the friction between the first locking block 31 and the inner wall of the rotating hole 33 is directed to the left. At this time, the maximum static friction force is FAt shown in the figure, and the normal support force of the inner wall of the rotating hole 33 on the first locking block 31 is FAn. The angle between the resultant force Fr of the two and the normal (radial direction pointing to the inner wall of the rotating hole 33) is the friction angle φ. When the angle α between the line connecting the rotation center O1 of the first locking block 31 and the tangent point A, and the line connecting the tangent point A and the center point O of the rotating portion 21 is less than the friction angle φ, the first locking block 31 and the inner wall of the rotating hole 33 are frictionally locked, and the first locking block 31 can drive the limiting wheel 32 to rotate together. When the rotating portion 21 rotates counterclockwise, the first elastic member 34 exerts a force FB on the first locking block 31, causing the first locking block 31 to rotate counterclockwise around the rotation center of the rotating portion 21 by a small angle (the specific angle only needs to ensure that the first contact surface 311 and the inner wall of the rotating hole 33 are separated after rotation) until the first locking block 31 and the inner wall of the rotating hole 33 no longer contact each other, thereby causing slip transmission between the rotating portion 21 and the limiting wheel 32, and the limiting wheel 32 does not rotate synchronously with the rotating portion 21. In this way, the rotating portion 21 can rotate counterclockwise to any position.

[0099] In this embodiment, optionally, the direction line of the elastic force FB of the first elastic member 34 does not pass through the rotation center O1 of the first locking block 31. This allows the elastic force FB to apply a torque to the first locking block 31, causing the first locking block 31 to rotate counterclockwise to a position where it is out of contact with the inner wall of the rotating hole 33 when the rotating portion 21 rotates counterclockwise. When the rotating portion 21 rotates counterclockwise, the first elastic member 34 is in a compressed state, applying a thrust to the first locking block 31, causing the first locking block 31 to rotate counterclockwise to a position where it is out of contact with the inner wall of the rotating hole 33. When the rotating portion 21 rotates clockwise, the first elastic member 34 is in a stretched state, applying a pulling force to the first locking block 31, causing the first locking block 31 to rotate clockwise to a position where it is in contact with the inner wall of the rotating hole 33.

[0100] Further, referring to Figures 2 and 4 , the rotating portion 21 is provided with a protrusion 211, which is located on one side of the connection between the first locking block 31 and the rotating portion 21. In this embodiment, the connection between the first locking block 31 and the rotating portion 21 is located on the disc surface of the rotating portion 21, specifically on the side of the rotating portion 21 that faces the limiting wheel 32 along the axis of the rotating shaft. The protrusion 211 is also provided on this side of the rotating portion 21. The first elastic member 34 connects the protrusion 211 and the first locking block 31. The protrusion 211 has a groove 212, specifically, the groove 212 is provided on the side of the protrusion 211 that faces the first locking block 31, and the opening of the groove 212 faces the first locking block 31. The first elastic member 34 is partially disposed within the groove 212. The inner peripheral sidewall of the groove 212 is clearance-fitted with the end of the first elastic member 34. The inner peripheral sidewall of the groove 212 limits radial movement of the end of the first elastic member 34, thereby reducing the shaking of the first elastic member 34 and maintaining a stable elastic force exerted by the first elastic member 34 on the first locking block 31. The first elastic member 34 may be a compression coil spring, an elastic pad (e.g., a rubber pad capable of providing elastic force), or other elastic structure.

[0101] Please refer to Figure 2 again. In the embodiment of the present application, there can be multiple first locking blocks 31 (four as shown in the figure). Multiple first locking blocks 31 are spaced apart and connected to the circumference of the rotating portion 21. Multiple protrusions 211 and multiple first elastic members 34 are also provided corresponding to the multiple first locking blocks 31. By evenly disposing multiple first locking blocks 31 around the circumference of the rotating portion 21 and detachably coupling them with the limiting wheel 32, it is beneficial to balance the force applied to the rotating portion 21 when the first locking blocks 31 are self-locking against the inner wall of the rotating hole 33. It also increases the friction between the rotating portion 21 and the limiting wheel 32 during self-locking, thereby reducing the problem of self-locking failure of the rotating portion 21 due to overload.

[0102] Referring again to Figures 1 and 2, the frame 10 includes a base 11, and the tiller position adjustment device 100 further includes an unlocking member 41. The rotating portion 21 is rotatably connected to the base 11, and the limiting wheel 32 is coaxial with the rotating portion 21. The unlocking member 41 is movably mounted on the base 11 and is used to switch the limiting wheel 32 between the first state and the second state. Specifically, one end of the unlocking member 41 is rotatably connected to the base 11, and the other end of the unlocking member 41 detachably abuts the outer circumference of the limiting wheel 32. When the unlocking member 41 abuts the limiting wheel 32, the limiting wheel 32 is in the first state, wherein the unlocking member 41 restricts the limiting wheel 32 from rotating relative to the frame 10 in the opposite direction of a predetermined direction. When the unlocking member 41 is separated from the limiting wheel 32, the limiting wheel 32 is in the second state, wherein the limiting wheel 32 can rotate relative to the frame 10 in the predetermined direction or in the opposite direction of the predetermined direction to any position.

[0103] In one embodiment of the present application, the outer circumference of the limiting wheel 32 is provided with a plurality of protrusions 321, and the unlocking member 41 detachably abuts against the plurality of protrusions 321. When the unlocking member 41 abuts against the plurality of protrusions 321, the limiting wheel 32 is in the first state, and the unlocking member 41 restricts the limiting wheel 32 from rotating relative to the base 11 in the opposite direction of the predetermined direction. When the unlocking member 41 is separated from the plurality of protrusions 321, the limiting wheel 32 is in the second state, and the limiting wheel 32 can rotate relative to the base 11 to any position in the opposite direction of the predetermined direction or in the predetermined direction.

[0104] Each protrusion 321 has adjacent stepped surfaces 322 and inclined surfaces 323 on its outer side, forming an acute-angled structure at the end of each protrusion 321. Multiple protrusions 321 form multiple ratchet structures on the outer periphery of the limiting wheel 32. Between adjacent protrusions 321, the stepped surface 322 of one protrusion 321 faces the inclined surface 323 of another protrusion 321, with the inclined surface 323 being tangential to the predetermined direction. The stepped surface 322 of each protrusion 321 is used to abut the unlocking member 41, while the inclined surface 323 is used to assist the end of the unlocking member 41 in sliding to the next protrusion 321 during rotation of the limiting wheel 32 in the predetermined direction, causing the unlocking member 41 to engage with the ratchet teeth, thereby restricting rotation of the limiting wheel 32 relative to the frame 10 in the opposite direction of the predetermined direction.

[0105] Furthermore, the frame 10 further includes a second elastic member 42 disposed between the unlocking member 41 and the base 11. The second elastic member 42 is configured to apply an elastic force to the unlocking member 41, causing the unlocking member 41 to abut against the limiting wheel 32. When the unlocking member 41 abuts against the limiting wheel 32 under the action of the second elastic member 42, the limiting wheel 32 is in the first state. When the unlocking member 41 overcomes the elastic force of the second elastic member 42 and separates from the limiting wheel 32, the limiting wheel 32 is in the second state.

[0106] The second elastic member 42 of the present embodiment includes, but is not limited to, a torsion spring. One end of the second elastic member 42 abuts the side of the unlocking member 41 facing away from the limiting wheel 32, and the other end abuts the base 11. The second elastic member 42 is configured to apply an elastic force toward the limiting wheel 32 to the unlocking member 41, thereby forcing the unlocking member 41 against the protrusion 321 of the limiting wheel 32. When the limiting wheel 32 needs to be switched to the second state, a torsional force can be applied to one end of the unlocking member 41, causing the unlocking member 41 to rotate about the connecting axis between the base 11 and the unlocking member 41, moving the unlocking member 41 away from the limiting wheel 32, thereby overcoming the elastic force and separating the unlocking member 41 from the limiting wheel 32.

[0107] Furthermore, the frame 10 also includes a knob 43, which is connected to the unlocking member 41 and is used to drive the unlocking member 41 to rotate so that the unlocking member 41 is separated from or in contact with the limiting wheel 32. In this embodiment, the knob 43 is arranged on the outer side of the base 11, specifically on the side of the base 11 facing away from the limiting wheel 32. The knob 43 is axially connected to the unlocking member 41. When an external force pushes the knob 43 to rotate, it can drive the unlocking member 41 to rotate synchronously, so that the unlocking member 41 overcomes the elastic force and separates from the limiting wheel 32, switching the limiting wheel 32 from the first state to the second state. When the external force applied to the knob 43 is removed, the unlocking member 41 and the knob 43 can be reset under the action of the second elastic member 42, and the unlocking member 41 abuts against the protrusion 321 on the outer peripheral side of the limiting wheel 32, switching the limiting wheel 32 from the second state to the first state.

[0108] Referring to FIG. 5 , in another embodiment of the present application, the locking assembly 30 includes a second locking block 35. One end of the second locking block 35 is rotatably connected to the inner sidewall of the rotating hole 33, and the other end of the second locking block 35 detachably abuts against the outer peripheral sidewall of the rotating portion 21. When the second locking block 35 contacts the outer peripheral sidewall of the rotating portion 21, the second locking block 35 self-locks relative to the outer peripheral sidewall of the rotating portion 21 in the opposite direction of a predetermined direction.

[0109] Specifically, the second locking block 35 has a second contact surface 351 at one end that abuts the rotating portion 21. The second contact surface 351 is generally an eccentric sector-shaped arc. Along a predetermined direction (from right to left in FIG5 ), the distance between the rotation center of the second locking block 35 and the second contact surface 351 gradually increases, i.e., the radius of the curvature of the second contact surface 351 gradually increases. When the rotating portion 21 rotates relative to the frame 10 in the predetermined direction, the second contact surface 351 and the outer peripheral sidewall of the rotating portion 21 are in a critical separation state, and the second locking block 35 does not restrict the movement of the rotating portion 21. When the rotating portion 21 has a tendency to rotate relative to the frame 10 in the opposite direction of the predetermined direction, the second contact surface 351 abuts against the outer peripheral sidewall of the rotating portion 21 and self-locks with the outer peripheral sidewall of the rotating portion 21. The self-locking principle is generally the same as in the previously described embodiment. The other structures of the embodiment shown in FIG5 , such as the frame 10, tiller connector 20, limiting wheel 32, and unlocking member 41, are generally the same as those of the embodiment shown in FIG1 and are not further described here.

[0110] Furthermore, multiple second locking blocks 35 are spaced apart and connected to the inner wall of the rotating hole 33. By evenly disposing multiple second locking blocks 35 on the inner wall of the rotating hole 33 and detachably coupling them to the rotating portion 21, it is beneficial to balance the force applied to the rotating portion 21 when the second locking blocks 35 are self-locking with respect to the outer wall of the rotating portion 21, and to increase the friction between the rotating portion 21 and the limiting wheel 32 during self-locking, thereby reducing the problem of self-locking failure of the rotating portion 21 due to overload.

[0111] Referring to Figure 6 , in another embodiment of the present application, one end of the unlocking member 41 abuts against the limiting wheel 32 and detachably abuts against the outer circumference of the limiting wheel 32. When one end of the unlocking member 41 contacts the outer circumference of the limiting wheel 32, the unlocking member 41 self-locks relative to the outer circumference of the limiting wheel 32 in a direction opposite to the predetermined direction, and the limiting wheel 32 is in the first state. When one end of the unlocking member 41 separates from the outer circumference of the limiting wheel 32, the limiting wheel 32 is in the second state.

[0112] Specifically, the outer circumference of the limiting wheel 32 is a circular surface, and one end of the unlocking member 41 that abuts the limiting wheel 32 has an eccentric arc surface 411. This eccentric arc surface 411 detachably abuts the circular surface of the outer circumference of the limiting wheel 32. The other end of the unlocking member 41 is rotatably connected to the base 11. Along a predetermined direction, the distance between the rotation center of the unlocking member 41 and the eccentric arc surface 411 gradually increases, that is, the radius of the eccentric arc surface 411 gradually increases. When the limiting wheel 32 rotates relative to the frame 10 in the predetermined direction, the eccentric arc surface 411 of the unlocking member 41 is in a critical separation state from the outer circumference of the limiting wheel 32, and the unlocking member 41 does not restrict the movement of the limiting wheel 32. When the limiting wheel 32 has a tendency to rotate in the opposite direction relative to the frame 10, the eccentric arc surface 411 of the unlocking member 41 abuts against the outer circumferential surface of the limiting wheel 32 and self-locks with the outer circumferential surface of the limiting wheel 32, thereby restricting the limiting wheel 32 from rotating in the opposite direction relative to the frame 10. The self-locking method of the unlocking member 41 with the outer circumferential sidewall of the limiting wheel 32 is substantially similar to the self-locking method between the limiting wheel 32 and the first locking block 31 in the embodiment shown in Figures 1-3, and will not be further described here. When the unlocking member 41 is separated from the limiting wheel 32 by an external force, the limiting wheel 32 can rotate in the opposite direction relative to the frame 10 to any position.

[0113] Please refer to Figure 7. In one embodiment of the present application, the tiller arm connector 20 further includes a limiting protrusion 23, which is provided on a side of the rotating portion 21 away from the pushing portion 22. A supporting portion 12 is provided on the frame 10. During the rotation of the tiller arm connector 20, the supporting portion 12 is used to resist the limiting protrusion 23 or the pushing portion 22 to limit the rotation range of the tiller arm connector 20. Specifically, the supporting portion 12 is protruding from the base 11 and is spaced apart from the rotating portion 21. The supporting portion 12 has a first supporting surface 121 on the side facing the unlocking member 41, that is, the inner side surface of the supporting portion 12 has the first supporting surface 121, and the end of the supporting portion 12 extending out of the base 11 has a second supporting surface 122. The first supporting surface 121 and the second supporting surface 122 are arranged at an angle. When the first abutting surface 121 abuts the limiting protrusion 23, the tiller connector 20 is in its initial position, at which point the tiller body is at its lowest operating position. When the tiller connector 20 rotates in a predetermined direction until the second abutting surface 122 abuts the pushing portion 22, the tiller connector 20 reaches its maximum rotation angle, at which point the tiller body is at its highest operating position. The first abutting surface 121 and the second abutting surface 122 are used to limit the rotation range of the tiller connector 20.

[0114] Referring to FIG8 , in one embodiment of the present application, a protrusion 24 is provided on one side of the tiller connector 20, and the frame 10 is provided with a first stopper 13 and a second stopper 14. A stopper angle is formed between the first stopper 13 and the second stopper 14, and when the tiller connector 20 rotates about the frame 10, the protrusion 24 moves within the stopper angle. Specifically, the protrusion 24 is provided on one side of the tiller connector 20 in a direction parallel to the axis of the rotation shaft of the stopper wheel 32 and protrudes outward. The first stopper 13 and the second stopper 14 are generally rod-shaped structures and are both provided on the outside of the base 11, that is, on the side of the base 11 facing away from the stopper wheel 32. The stopper angle is the angle between the extension lines of the first stopper 13 and the second stopper 14. The first limiting member 13 abuts against the protrusion 24, and the tiller connector 20 is in the initial position. The second limiting member 14 abuts against the protrusion 24, and the tiller connector 20 rotates to the maximum angle position, thereby limiting the rotation range of the tiller connector 20 and reducing the interference between the tiller body or the tiller connector 20 and other structures, or collision with external equipment.

[0115] Referring to Figures 9 and 10 , in another embodiment of the present application, the frame 10 includes a base 11 and a retaining frame 16. One end of the retaining frame 16 is rotatably connected to the base 11, and the locking assembly 30 is disposed at the other end of the retaining frame 16. The tiller arm connector 20 includes a rotating portion 21 and a pushing portion 22 connected thereto. The rotating portion 21 is rotatably connected to the base 11, and the retaining frame 16 is positioned between the pushing portion 22 and the base 11. The locking assembly 30 detachably abuts the pushing portion 22 and the base 11. In this embodiment, the pushing portion 22 and the rotating portion 21 generally form a V-shaped structure. The end of the rotating portion 21, distal from the pushing portion 22, is rotatably connected to the base 11 via a rotating shaft. The locking assembly 30 is positioned between the end of the pushing portion 22 connected to the rotating portion 21 and the base 11, and detachably abuts the pushing portion 22 and the base 11. When the locking assembly 30 is in a first state, it contacts the push portion 22 and the base 11 and self-locks relative to the push portion 22 in the direction opposite to the preset direction and relative to the base 11 in the direction opposite to the preset direction. At this point, the tiller arm connector 20 can rotate relative to the frame 10 to any position in the preset direction, but cannot rotate relative to the frame 10 in the direction opposite to the preset direction. When the locking assembly 30 is in a second state, it is separated from the push portion 22 and the base 11. At this point, the tiller arm connector 20 can rotate relative to the frame 10 to any position in the direction opposite to the preset direction or in the direction opposite to the preset direction.

[0116] In this embodiment, the base 11 is provided with a bearing 17. The rotating shaft of the rotating portion 21 rotates in engagement with the bearing 17. The bearing 17 has an outer arc surface 171. The pushing portion 22 protrudes from the rotating portion in an axial direction parallel to the rotating portion 21. The outer arc surface 171 of the bearing 17 is spaced apart from the portion of the pushing portion 22 protruding from the rotating portion 21. The locking assembly 30 includes a third locking block 36. The third locking block 36 detachably abuts the outer arc surface 171 and the portion of the pushing portion 22 protruding from the rotating portion 21. The third locking block 36 has a first curved surface 361 on the side facing the base 11. The first curved surface 361 detachably abuts the outer arc surface 171. The third locking block 36 has a second curved surface 362 on the side facing away from the first curved surface 361. The second curved surface 362 detachably abuts the portion of the pushing portion 22 protruding from the rotating portion 21. When the third locking block 36 is in the first state, the first curved surface 361 is self-locked relative to the outer arc surface 171 in the direction opposite to the preset direction, and the second curved surface 362 is self-locked relative to the pushing portion 22 in the direction opposite to the preset direction. When the third locking block 36 is in the second state, the first curved surface 361 is separated from the outer arc surface 171, and the second curved surface 362 is separated from the pushing portion 22.

[0117] In this embodiment, the second curved surface 362 is the aforementioned first locking curved surface, and the side of the pushing portion 22 that abuts against the third locking block 36 (the inner side surface of the portion of the pushing portion 22 protruding from the rotating portion 21) also has an arc surface structure, which is the aforementioned second locking curved surface.

[0118] Furthermore, the retaining frame 16 is rotatably connected to the base 11, and the retaining frame 16 is coaxial with the rotating portion 21. In this embodiment, the retaining frame 16 is generally T-shaped. The vertical end of the T-shaped structure of the retaining frame 16 and the rotating portion 21 share the same rotating shaft and are rotatably connected to the base 11, and the retaining frame 16 can adjust its position relative to the rotating portion 21. The horizontal end of the T-shaped structure of the retaining frame 16 is rotatably connected to the third locking block 36, so that the third locking block 36 is located between the portion of the pushing portion 22 protruding from the rotating portion 21 and the base 11. In this way, the retaining frame 16 can adjust the position of the third locking block 36 in real time during the rotation of the tiller handle connecting member 20, so that the third locking block 36 maintains contact with the pushing portion 22 and the bearing 17 on the base 11.

[0119] In the embodiment shown in Figure 9, a third elastic member 25 is provided between the locking assembly 30 and the retaining frame 16. The third elastic member 25 is used to apply an elastic force to the locking assembly 30 so that the first curved surface 361 maintains contact with the outer arc surface 171. The third elastic member 25 can be a torsion spring, which is mounted on the rotating shaft between the third locking block 36 and the retaining frame 16. One end of the third elastic member 25 is connected to the third locking block 36, and the other end is connected to the retaining frame 16. The first curved surface 361 maintains contact with the outer arc surface 171 under the elastic torsional force of the third elastic member 25. A fourth elastic member 26 is provided between the retaining frame 16 and the base 11. The fourth elastic member 26 is used to apply an elastic force to the retaining frame 16 so that the second curved surface 362 maintains contact with the pushing portion 22. The fourth elastic member 26 can also be a torsion spring, which is mounted on the rotating shaft of the retaining frame 16 and the base 11. One end of the fourth elastic member 26 abuts against the side of the retaining frame 16 away from the tiller connecting member 20, and the other end abuts against the base 11. The second curved surface 362 maintains contact with the pushing portion 22 under the elastic torsional force of the fourth elastic member 26.

[0120] Referring to Figures 10 and 11 , in this embodiment, optionally, when the third locking block 36 forms a self-locking relationship with the push portion 22 and the bearing 17 on the base 11, that is, when the first curved surface 361 forms a self-locking relationship with the outer arc surface 171 and the second curved surface 362 forms a self-locking relationship with the push portion 22, the second curved surface 362 is tangent to the inner side surface of the push portion 22 at tangent point A, and the first curved surface 361 is tangent to the outer arc surface 171 of the bearing 17 on the base 11 at tangent point B. The center of curvature O1 of the first curved surface 361, the center of curvature O2 of the second curved surface 362, and the tangent point A are not collinear. The center of curvature O1 of the first curved surface 361, the center of curvature O2 of the second curved surface 362, and the tangent point B are not collinear. Tangent point A, the center of curvature O2 of the second curved surface 362, and the center point O of the bearing 17 are all on a straight line. The center of curvature O1 of the first curved surface 361, the tangent point B, and the center point O of the bearing 17 lie on separate straight lines. The tangent points A and B herein refer to geometric features within the cross-section shown in FIG11 . In actual products, the contact between the first curved surface 361 and the outer arc surface 171, and the contact between the second curved surface 362 and the inner side of the pushing portion 22, may appear as tangent lines due to the thickness of each component.

[0121] When the pushing portion 22 and the rotating portion 21 rotate clockwise from the perspective of the diagram, the third locking block 36 tends to rotate clockwise and maintains a position in contact with the pushing portion 22 and the base 11 under the support of the third elastic member 25 and the fourth elastic member 26. At the same time, the friction force between the second curved surface 362 and the inner surface of the pushing portion 22 is to the right from the perspective of the diagram, and the friction force between the first curved surface 361 and the outer circumferential surface of the bearing 17 is to the left from the perspective of the diagram. At this time, the maximum static friction force at the intersection point A is FAt shown in the figure, and the normal support force at the intersection point A is FAn. The angle between the resultant force FAr and the normal (the direction of the line connecting the intersection point A and the center of curvature O2 of the second curved surface 362) is the friction angle ψ of the intersection point A. When the angle α between the line connecting tangent point B and tangent point A (the line of action of the thrust of the third locking block 36 at tangent point A) and the line connecting tangent point A and the center point O of the bearing 17 is less than the friction angle ψ, the second curved surface 362 and the inner surface of the pushing portion 22 undergo frictional self-locking. The maximum static friction force at tangent point B is FBt, as shown in the figure. The normal support force at tangent point B is FBn. The angle between the resultant force FBr and the normal (the direction of the line connecting tangent point B and the center of curvature O1 of the first curved surface 361) is the friction angle ψ' at tangent point B. When the angle φ between the line connecting tangent point A and tangent point B (the line of action of the thrust of the third locking block 36 at tangent point B) and the line connecting tangent point B and the center point O of the bearing 17 is less than the friction angle ψ', the first curved surface 361 and the outer arc surface 171 of the bearing 17 undergo frictional self-locking.

[0122] When the tiller arm connector 20 rotates counterclockwise, under the action of the second elastic member 42 and the fourth elastic member 26, the third locking block 36 rotates counterclockwise around the retainer 16 by a small angle (the specific angle only needs to ensure that after the rotation, the first curved surface 361 and the outer arc surface 171 of the bearing 17, and the second curved surface 362 and the inner side surface of the pushing portion 22 are in a critical separation state) until the first curved surface 361 and the outer arc surface 171 of the bearing 17, and the second curved surface 362 and the inner side surface of the pushing portion 22 form a dynamic friction relationship, thereby causing relative rotation between the third locking block 36, the pushing portion 22, and the bearing 17 on the base 11. In this way, the tiller arm connector 20 can rotate counterclockwise to any position.

[0123] Referring again to FIG. 9 , the frame 10 further includes a knob 43 axially connected to the locking assembly 30. The knob 43 is used to rotate the locking assembly 30, thereby separating the locking assembly 30 from the base 11 and the pusher 22. Specifically, the locking assembly 30 includes two third locking blocks 36. The two third locking blocks 36 are symmetrically arranged on opposite sides of the retaining frame 16 along the central axis of the retaining frame 16 along the rotation axis of the third locking blocks 36. The two third locking blocks 36 are axially connected to opposite ends of a rotating shaft that is rotatably connected to the retaining frame 16, allowing the two third locking blocks 36 to move synchronously. The base 11 also includes two bearings 17, each bearing 17 corresponding to one third locking block 36. This helps balance the forces acting on the pusher 22 and the base 11, thereby improving the rotational stability of the tiller arm connector 20. The knob 43 is disposed on a side of one of the third locking blocks 36 facing away from the retaining frame 16 and is axially connected to the third locking block 36. Axial connection methods include, but are not limited to, a fixed connection of the knob 43 to the rotating shaft of the third locking block 36. Under external force, the knob 43 can drive the two third locking blocks 36 to rotate relative to the retaining frame 16, separating the third locking blocks 36 from the push portion 22 and the base 11, thereby switching the locking assembly 30 between the first and second states. After the external force applied to the knob 43 is removed, the third locking blocks 36 can be reset under the action of the third elastic member 25 and the fourth elastic member 26.

[0124] Referring to Figures 10 and 12 , the tiller connector 20 further includes a limiting protrusion 23, which is disposed on a side of the rotating portion 21 away from the pushing portion 22. The frame 10 includes a resisting portion 12, which is disposed on the base 11 and located on a side of the tiller connector 20 away from the retaining frame 16. During rotation of the tiller connector 20, the resisting portion 12 is used to abut against the limiting protrusion 23 or the rotating portion 21 to limit the rotation range of the tiller connector 20.

[0125] Specifically, in this embodiment, the abutting portion 12 is provided at the bottom of the base 11, and the abutting portion 12 includes a first abutting surface 121 and a second abutting surface 122 arranged at an angle. The first abutting surface 121 is used to abut the limiting protrusion 23, and the second abutting surface 122 is used to abut the rotating portion 21. When the first abutting surface 121 abuts the limiting protrusion 23, the tiller connector 20 is in an initial position. When the second abutting surface 122 abuts the side of the rotating portion 21 facing away from the limiting frame, the tiller connector 20 rotates along a preset direction to a maximum angular position, thereby limiting the rotation range of the tiller connector 20.

[0126] Referring to Figures 13 and 14 , in another embodiment of the present application, the third locking block 36 and the bearing 17 can be positioned in the middle of the base 11, and the number of third locking block 36 can also be one. The retaining frame 16 includes a support portion 161 and connecting plates 162 located on either side of the support portion 161. The connecting plates 162 are generally triangular in structure. The bearing 17 is partially inserted between the two connecting plates 162 and connected to them via a rotating shaft. The portion of the connecting plate 162 protruding from the bearing 17 is rotatably connected to the third locking block 36, with the first curved surface 361 and the second curved surface 362 of the third locking block 36 contacting the outer arc of the bearing 17 and the push portion 22 of the tiller connector 20, respectively. The embodiments shown in Figures 14 and 15 , by adjusting the structure of the retaining frame 16 and the base 11 and changing the installation position of the third locking block 36, can reduce the number of parts in the entire machine, simplifying the installation process and lowering production costs.

[0127] Referring to Figure 15 , in another embodiment of the present application, a fifth elastic member 27 is disposed between the pushing portion 22 and the retaining frame 16. The fifth elastic member 27 is located on a side of the locking assembly 30 facing away from the rotating portion 21. The fifth elastic member 27 is configured to apply an elastic force to the retaining frame 16, maintaining contact between the first curved surface 361 and the outer arc surface 171, and maintaining contact between the second curved surface 362 and the pushing portion 22. In this embodiment, the fifth elastic member 27 includes, but is not limited to, a compression spring structure, configured to apply elastic pressure to the retaining frame 16 to force the third locking block 36 to contact the base 11 and the pushing portion 22.

[0128] Referring to Figure 16 , in another embodiment of the present application, a protrusion 24 is provided on one side of the pushing portion 22 parallel to the axis of rotation of the rotating portion 21. A first stopper 13 and a second stopper 14 are provided on one side of the base 11. A limiting angle is formed between the first stopper 13 and the second stopper 14. When the tiller arm connector 20 rotates about the frame 10, the protrusion 24 moves within the limiting angle. Specifically, the first stopper 13 and the second stopper 14 can be fixedly connected to the outside of the bearing 17, and the protrusion 24 is provided on the outside of the connection between the pushing portion 22 and the rotating portion 21. When the first stopper 13 abuts the protrusion 24, the pushing portion 22 is in its initial position. When the second stopper 14 abuts the protrusion 24, the pushing portion 22 rotates counterclockwise to its maximum angle position from the perspective of the illustration.

[0129] Referring to Figures 17, 18, and 19, in another embodiment of the present application, the frame 10 includes a base 11 having a rotation hole 33 defined therein. The tiller arm position adjustment device 100 further includes a rotating member 15 rotatably connected to the base 11 and partially disposed within the rotation hole 33. The tiller arm connector 20 is axially connected to the rotating member 15. A sliding groove 38 is formed between the inner sidewall of the rotation hole 33 and the outer sidewall of the rotating member 15. The locking assembly 30 is movably disposed within the sliding groove 38, and the sliding groove 38 is used to switch the locking assembly 30 between the first and second states. In this embodiment, the locking assembly 30 includes a fourth locking block 37, which is generally cylindrical and movably disposed within the sliding groove 38. The fourth locking block 37 switches the locking assembly 30 between the first and second states by moving to different positions within the sliding groove. When the locking assembly 30 is in the first state, the fourth locking block 37 abuts against the inner sidewall of the rotating hole 33 and the outer sidewall of the rotating member 15. The fourth locking block 37 self-locks with these inner sidewalls in the opposite direction of the preset direction. When the locking assembly 30 is in the second state, the fourth locking block 37 can be separated from the inner sidewall of the rotating hole 33 and the outer sidewall of the rotating member 15, allowing the rotating member 15 to rotate to any position in the preset direction or the opposite direction. The outer sidewall of the fourth locking block 37 forms the first locking curved surface, while the outer sidewall of the rotating member 15 forms the second locking curved surface. In this case, the rotating member 15 can function as part of the tiller arm connector.

[0130] Specifically, referring to Figures 18 and 19, the sliding slot 38 includes a first section 381 and a second section 382 that are connected. Along the radial direction of the rotating member 15, the width of the first section 381 is greater than the width of the second section 382. Furthermore, the width of the first section 381 is greater than the diameter of the locking assembly 30, while a portion of the width of the second section 382 is less than the diameter of the locking assembly 30. In other words, the width of the first section 381 is greater than the diameter of the fourth locking block 37, while the width of the second section 382 is less than the diameter of the fourth locking block 37. When the locking assembly 30 is in the first section 381 (that is, when the fourth locking block 37 is in the first section 381), the locking assembly 30 is in the second state, and the rotating member 15 can rotate to any position in the predetermined direction or the opposite direction of the predetermined direction. When the locking assembly 30 is located in the second section 382, ​​that is, when the fourth locking block 37 is located in the second section 382, ​​the locking assembly 30 is in the first state, and the locking assembly 30 is self-locked relative to the inner wall of the rotating hole 33 and the outer wall of the rotating part 15 in the opposite direction of the preset direction.

[0131] In this embodiment, the first section 381 and the second section 382 are smoothly connected, that is, the width of the sliding groove 38 gradually decreases from the first section 381 to the second section 382. When the fourth locking block 37 moves to a position near the second section 382 where the width is smaller than the diameter of the fourth locking block 37, the outer wall of the fourth locking block 37 abuts against the inner wall of the rotating hole 33 and the outer wall of the rotating member 15. Furthermore, the friction angle formed at the point of contact between the fourth locking block 37 and the inner wall of the rotating hole 33 is greater than the angle between the thrust of the fourth locking block 37 at that point and the normal. Furthermore, the friction angle formed at the point of contact between the fourth locking block 37 and the outer wall of the rotating member 15 is greater than the angle between the thrust of the fourth locking block 37 at that point and the normal, thereby causing the fourth locking block 37 to frictionally self-lock with the inner wall of the rotating hole 33 and the outer wall of the rotating member 15.

[0132] Furthermore, the frame 10 also includes a sixth elastic member 50 and a limiting member 60. The sixth elastic member 50 is located in the first section 381. One end of the sixth elastic member 50 is connected to the inner sidewall of the rotation hole 33, and the other end of the sixth elastic member 50 is connected to the locking assembly 30. The limiting member 60 is retractably disposed in the second section 382. When the limiting member 60 is inserted into the second section 382, ​​it abuts against the fourth locking block 37, confining the fourth locking block 37 to the first section 381. When the limiting member 60 is removed from the second section 382, ​​the sixth elastic member 50 is used to push the fourth locking block 37 to the second section 382. When the fourth locking block 37 moves to the second section 382 under the action of the elastic force, if the rotating member 15 has a tendency to rotate in the opposite direction of the preset direction, that is, if the rotating member 15 has a tendency to rotate in the clockwise direction, the fourth locking block 37 can abut and compress the inner sidewall of the rotating hole 33 and the outer sidewall of the rotating member 15, thereby forming a frictional self-locking relationship between the fourth locking block 37 and the rotating member 15. The self-locking principle is substantially the same as that of the previous embodiment and will not be further described here. When the fourth locking block 37 moves to the second section 382 under the action of the elastic force, if the rotating member 15 rotates in the preset direction, that is, counterclockwise from the perspective of the figure, the fourth locking block 37 can move toward the first section 381 under the action of the friction force, or have a tendency to move toward the first section 381, so that the fourth locking block 37 can reach a critical separation state from the inner sidewall of the rotating hole 33 and the outer sidewall of the rotating member 15, thereby no longer restricting the rotation of the rotating member 15 in the preset direction.

[0133] In other embodiments of the present application, as shown in Figure 20, a plurality of positioning structures corresponding to the fourth locking block 37 can also be provided in the sliding groove 38, such as a positioning protrusion 384, etc., for limiting the fourth locking block 37 to the first section 381 or the second section 382. The fourth locking block 37 can be placed in different positions of the sliding groove 38 by manually moving the fourth locking block 37, thereby switching the locking assembly 30 to different states.

[0134] Please refer again to Figures 17, 18, and 19. In the embodiment of the present application, the base 11 is a generally rectangular parallelepiped structure. The frame 10 further includes a stationary wheel 18, which is fixedly mounted on a plane of the base 11. The rotating hole 33 is defined in the stationary wheel 18. The rotating member 15 is a generally cylindrical structure with a special-shaped hole defined in the center thereof. The tiller connecting member 20 can be plugged into the special-shaped hole in the center of the rotating member 15 via a rod-like structure, thereby maintaining relative fixation between the tiller connecting member 20 and the rotating member 15.

[0135] The stationary wheel 18 comprises a first portion 181 and a second portion 182 disposed opposite each other. The first portion 181 and the second portion 182 are partially connected to form the stationary wheel 18. Recesses are formed at the opposing ends of the first portion 181 and the second portion 182 for receiving fasteners such as bolts to secure the stationary wheel 18 to the base 11. A rotation hole 33 is formed between the first portion 181 and the second portion 182, positioning the rotating member 15 disposed within the rotation hole 33 between the first portion 181 and the second portion 182. The inner sidewall of the first portion 181 is spaced apart from the rotating member 15 to form the sliding groove 38. The inner sidewall of the second portion 182 is coaxial with the outer sidewall of the rotating member 15. Furthermore, the inner sidewall of the second portion 182 forms a clearance fit with the outer sidewall of the rotating member 15. The second part 182 is used to position the rotating part 15 so that the relative position between the rotating part 15 and the first part 181 remains stable, thereby keeping the width of the sliding groove 38 in different sections stable, reducing the change in the width of the sliding groove 38 in different sections due to the shaking of the rotating part 15, and affecting the self-locking effect of the device.

[0136] A through-hole 183 is defined along the radial direction of the stationary wheel 18 on a side corresponding to the second section 382. The stopper 60 is movably disposed within this through-hole 183. Specifically, this through-hole 183 is defined at the top of the first portion 181. The stopper 60 is retractably disposed within the second section 382 through this through-hole 183. This through-hole 183 also serves as a guide for the movement of the stopper 60, maintaining a stable position within the sliding slot 38. When the stopper 60 is inserted through the through-hole 183 into the second section 382 of the sliding slot 38, it pushes the fourth locking block 37 to move toward the first section 381. While the stopper 60 remains stationary in the second section 382, ​​it abuts against the fourth locking block 37 and retains it in the first section 381.

[0137] Furthermore, the frame 10 also includes an unlocking member 41, which is connected to the limiting member 60 and movably connected to the base 11. The unlocking member 41 is used to drive the limiting member 60 to be inserted into or withdrawn from the second section 382. Specifically, the unlocking member 41 is generally rod-shaped, with one end rotatably connected to the base 11 and the other end suspended in the air as a free end, facilitating the application of external force to the unlocking member 41. The rotation axis of the unlocking member 41 is parallel to the rotation axis of the rotating member 15. The end of the limiting member 60 facing away from the stationary wheel 18 can be rotatably connected to the middle section of the unlocking member 41 via a structure such as a pin. In this way, by pulling or pressing the free end of the unlocking member 41, the limiting member 60 can be moved using the principle of leverage, so that the limiting member 60 can be inserted into or withdrawn from the second section.

[0138] In this embodiment, the end of the stopper 60 that is inserted into the second section 382 further comprises a stopper recess 61. When the stopper 60 is inserted into the second section 382, ​​the fourth locking block 37 is partially disposed within the stopper recess 61. The curved surface of the stopper recess 61 mates with the outer circumference of the fourth locking block 37, reducing movement of the fourth locking block 37 within the first section 381 and facilitating positioning of the fourth locking block 37.

[0139] Referring to Figures 18 and 21 , in one embodiment of the present application, the sliding slot 38 further includes a third section 383. The third section 383 and the first section 381 are respectively located at opposite ends of the second section 382. Along the radial direction of the rotating member 15, the width of the third section 383 is greater than the width of the second section 382, ​​and the width of the third section 383 is also greater than the diameter of the fourth locking block 37. The two locking assemblies 30 are movably disposed within the sliding slot 38. Specifically, the two fourth locking blocks 37 are movably disposed within the sliding slot 38. When one of the fourth locking blocks 37 is confined to the first section 381 and the other is confined to the third section 383, the rotating member 15 can rotate in any direction relative to the base 11. When both fourth locking blocks 37 are located in the second section 382, ​​both fourth locking blocks 37 abut against the outer wall of the rotating member 15 and the inner wall of the rotating hole 33, so that the two fourth locking blocks 37 are self-locked with the outer wall of the rotating member 15 and the inner wall of the rotating hole 33 along the preset direction and the opposite direction of the preset direction, and the rotating member 15 cannot rotate relative to the base 11.

[0140] Referring to FIG. 22 , in one embodiment of the present application, the frame 10 further includes a limit bearing 70, which is fixed within the rotation hole 33. The rotation member 15 is provided with a rotation shaft 151 that is fixedly engaged with the limit bearing 70. The limit bearing 70 further positions the installation position of the rotation member 15 via the rotation shaft 151, thereby improving the stability of the rotation member 15 and reducing the shaking of the rotation member 15.

[0141] In other embodiments of the present application, the locking assembly 30 includes a one-way bearing connected between the tiller connector 20 and the frame 10. The one-way bearing can replace the stationary wheel 18, fourth locking block 37, and other structures shown in Figures 17 to 19. When the one-way bearing is in the first state, it allows the tiller connector 20 to be adjusted to any position relative to the frame 10 along a predetermined direction and locks the tiller connector 20 from being adjusted relative to the frame 10 in the opposite direction of the predetermined direction. When the one-way bearing is in the second state, it allows the tiller connector 20 to be adjusted to any position relative to the frame 10 in the predetermined direction or in the opposite direction of the predetermined direction.

[0142] Referring to FIG. 23 , an embodiment of the present application further provides a tiller 200, comprising a tiller body 201 and the tiller position adjustment device 100 described in the above embodiment. The tiller body 201 is coupled to the tiller connector of the tiller position adjustment device 100. The tiller body 201 includes, but is not limited to, structures such as a handle, an operating lever, and a wheel, and may be fixedly connected to the push portion of the tiller connector via fasteners such as bolts. When the locking assembly is in a first state, the tiller body 201 can drive the tiller connector to adjust to any position relative to the frame in a predetermined direction and be locked when adjusting relative to the frame in the opposite direction of the predetermined direction. When the locking assembly is in a second state, the tiller body 201 can drive the tiller connector to adjust to any position relative to the frame in the predetermined direction or the opposite direction of the predetermined direction. By switching the state of the locking assembly, the tiller body 201 can be infinitely adjusted to any position relative to the frame and then locked, meeting various tiller position adjustment requirements.

[0143] An embodiment of the present application further provides a water propulsion device 300, comprising a tiller body 201, a propulsion main unit 301, a propeller 302, and the tiller position adjustment device 100 described in the above embodiment, wherein the propulsion main unit 301 is connected to the propeller 302, and the tiller position adjustment device 100 couples the tiller body 201 and the propulsion main unit 301 to adjust the operating position of the tiller body 201. Coupling methods include, but are not limited to, directly locking and fixing the frame of the tiller position adjustment device 100 to the housing of the propulsion main unit 301 via fasteners such as bolts, or indirectly connecting the frame of the tiller position adjustment device 100 to the propulsion main unit 301 via a structure such as a connecting frame.

[0144] Furthermore, the propulsion main unit 301 is used to couple with a mobile vehicle in water, including but not limited to ships, bamboo rafts, and floating boards. When the propulsion unit 300 needs to provide propulsion to the mobile vehicle, the propeller 302 can be partially or completely disposed below the water surface to provide propulsion to the mobile vehicle. The tiller position adjustment device 100 is used to adjust the operating position of the tiller relative to the mobile vehicle. When the locking assembly of the tiller position adjustment device 100 is in a first state, the tiller body 201 can drive the tiller connector to adjust to any position relative to the frame in a predetermined direction and be locked when adjusting relative to the frame in the opposite direction of the predetermined direction. When the locking assembly is in a second state, the tiller body 201 can drive the tiller connector to adjust to any position relative to the frame in the predetermined direction or the opposite direction of the predetermined direction. By switching the state of the locking assembly, the tiller body 201 can be infinitely adjusted to any position relative to the frame and then locked, meeting various tiller position adjustment requirements.

[0145] In an embodiment of the present application, the propulsion main engine 301 includes a connected mounting frame 3011 and a main body 3012. The mounting frame 3011 is used to mount the main body 3012 on a mobile vehicle in water. The propeller 302 is coupled to the main body 3012 and disposed below the water surface. The main body 3012 is used to drive the propeller 302 to rotate to provide propulsion to the mobile vehicle in water. The coupling method between the propeller 302 and the main body 3012 includes but is not limited to the propeller 302 being directly connected to the output shaft of the main body 3012, or being indirectly connected to the output shaft of the main body 3012 via a clutch, coupling, gearbox, or other structure.

[0146] Referring to Figure 24 , an embodiment of the present application further provides a mobile device 400 for use in water areas, comprising a carrier 401 and the water area thruster 300 described in the above embodiment. The water area thruster 300 is mounted on one end of the carrier 401 to propel the carrier 401. The carrier 401 includes, but is not limited to, structures such as a hull and a floating board.

[0147] Furthermore, the carrier 401 has a carrying compartment 4011. When the tiller connector 20 of the tiller position adjustment device 100 in the water thruster 300 is adjusted relative to the frame 10, the tiller body 201 of the water thruster 300 can be partially accommodated in the carrying compartment 4011 or moved out of the carrying compartment 4011. In the example of Figure 24, when the tiller body 201 is in an upwardly tilted position, it is a position that can be operated when the user is standing or when the user is tall. When the tiller body 201 is in a horizontal position or a downwardly tilted position, it is a position that can be operated when the user is sitting or when the user is short. The tiller body 201 is in a position where it is partially accommodated in the carrying compartment 4011, which is a state where the tiller body 201 is not in use.

[0148] The above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent replacements of the technical solutions of the present application should not depart from the spirit and scope of the technical solutions of the present application.

Claims

1. A tiller position adjustment device, It is characterized in that include: A frame for coupling with a main engine of a water propulsion device; A tiller connecting piece, used for coupling with the tiller main body; A locking assembly connects the tiller handle connecting member and the frame. The locking assembly is in a first state, allowing the tiller handle connecting member to be adjusted to any position relative to the frame along a preset direction, and locking the tiller handle connecting member from being adjusted relative to the frame in the opposite direction of the preset direction. The locking assembly is in a second state, allowing the tiller handle connecting member to be adjusted to any position relative to the frame along the preset direction or in the opposite direction of the preset direction.

2. The tiller position adjustment device according to claim 1, Features: The tiller handle connecting member includes a pushing part and a rotating part connected to each other, the locking assembly includes a limiting wheel, the limiting wheel is arranged on the frame, a rotating hole is provided in the limiting wheel, the rotating part is rotatably connected to the frame and arranged in the rotating hole, and the rotating part is detachably coupled to the inner wall of the rotating hole; When the limiting wheel is in the first state, the rotating part can be adjusted to any position relative to the frame along a preset direction, and the rotating part is locked from adjusting its position relative to the frame in the opposite direction of the preset direction; when the limiting wheel is in the second state, the rotating part can be adjusted to any position relative to the frame along the preset direction or in the opposite direction of the preset direction.

3. The tiller position adjustment device according to claim 2, Features: The locking assembly includes a first locking block, one end of which is rotatably connected to the rotating part, and the other end of the first locking block protrudes relative to the peripheral side wall of the rotating part and can detachably contact the inner wall of the rotating hole; when the first locking block contacts the inner wall of the rotating hole, the first locking block self-locks relative to the inner wall of the rotating hole in the opposite direction of a preset direction.

4. The tiller position adjustment device according to claim 3, Features: The locking assembly includes a first elastic member, the first elastic member is supported between the first locking block and the rotating portion, and the first elastic member is used to make the first locking block contact the inner wall of the rotating hole.

5. The tiller position adjustment device according to claim 3, Features: A plurality of the first locking blocks are connected to the circumferential side of the rotating part at intervals.

6. The tiller position adjustment device according to claim 3, Features: The frame includes a base, and the tiller handle position adjustment device also includes an unlocking member. The rotating part is rotatably connected to the base, the limiting wheel is coaxial with the rotating part, and the unlocking member is movably arranged on the base. The unlocking member is used to switch the limiting wheel to the first state or the second state.

7. The tiller position adjustment device according to claim 6, Features: The outer peripheral side of the limiting wheel is provided with a plurality of protrusions, and the unlocking member can detachably abut against the plurality of protrusions; when the unlocking member abuts against the plurality of protrusions, the limiting wheel is in the first state, and when the unlocking member is separated from the plurality of protrusions, the limiting wheel is in the second state.

8. The tiller position adjustment device according to claim 6, Features: The frame further includes a second elastic member, which is disposed between the unlocking member and the base, and is used to apply an elastic force to the unlocking member so that the unlocking member abuts against the limiting wheel; When the unlocking member abuts against the limiting wheel under the action of the second elastic member, the limiting wheel is in the first state; when the unlocking member overcomes the elastic force of the second elastic member and separates from the limiting wheel, the limiting wheel is in the second state.

9. The tiller position adjustment device according to claim 6, Features: The frame further comprises a knob, which is connected to the unlocking member and is used to drive the unlocking member to rotate so as to separate the unlocking member from the limiting wheel.

10. The tiller position adjustment device according to claim 4, Features: The rotating part is provided with a protrusion, the protrusion is located at one side of the connection between the first locking block and the rotating part, and the first elastic member connects the protrusion and the first locking block.

11. The tiller position adjustment device according to claim 10, Features: The convex block is provided with a groove, and the first elastic member is partially arranged in the groove.

12. The tiller position adjustment device according to claim 2, Features: The locking assembly includes a second locking block, one end of which is rotatably connected to the inner side wall of the rotating hole, and the other end of the second locking block can detachably abut against the outer peripheral side wall of the rotating part; when the second locking block contacts the outer peripheral side wall of the rotating part, the second locking block self-locks relative to the outer peripheral side wall of the rotating part in the opposite direction of a preset direction.

13. The tiller position adjustment device according to claim 12, Features: A plurality of the second locking blocks are connected to the inner side wall of the rotating hole at intervals.

14. The tiller position adjustment device according to claim 6, Features: One end of the unlocking member abuts against the limiting wheel and can detachably abut against the outer peripheral side of the limiting wheel; when one end of the unlocking member contacts the outer peripheral side wall of the limiting wheel, the unlocking member self-locks relative to the outer peripheral side wall of the limiting wheel in the reverse direction of the preset direction, and the limiting wheel is in the first state; When one end of the unlocking member is separated from the outer circumference of the limiting wheel, the limiting wheel is in the second state.

15. The tiller position adjusting device according to any one of claims 2 to 14, Features: The tiller handle connecting piece also includes a limiting convex portion, which is arranged on a side of the rotating portion away from the pushing portion. A resisting portion is provided on the tiller handle connecting piece, and during the rotation of the tiller handle connecting piece, the resisting portion is used to resist the limiting convex portion or the pushing portion to limit the rotation range of the tiller handle connecting piece.

16. The tiller position adjusting device according to any one of claims 1 to 14, Features: A protrusion is provided on one side of the tiller handle connecting member, and the frame is provided with a first limiting member and a second limiting member, a limiting angle is formed between the first limiting member and the second limiting member, and when the tiller handle connecting member rotates around the frame, the protrusion moves within the limiting angle.

17. The tiller position adjustment device according to claim 1, Features: The frame comprises a base and a holder, one end of the holder is rotatably connected to the base, and the locking assembly is arranged at the other end of the holder; The tiller handle connecting member includes a rotating part and a pushing part connected to each other, the rotating part is rotatably connected to the base, the retaining frame is located between the pushing part and the base, the locking assembly can detachably resist the pushing part and the base, when the locking assembly is in a first state, it contacts the pushing part and the base, and self-locks relative to the pushing part in the opposite direction of the preset direction and relative to the base in the opposite direction of the preset direction; when the locking assembly is in a second state, it is separated from the pushing part and the base.

18. The tiller position adjustment device according to claim 17, Features: The base is provided with a bearing, the rotating shaft of the rotating part is rotatably matched with the bearing, the bearing has an outer arc surface, the locking assembly includes a third locking block, the third locking block has a first curved surface on a side facing the base, and the first curved surface can detachably abut against the outer arc surface; The third locking block has a second curved surface on a side facing away from the first curved surface, and the second curved surface can detachably abut against the pushing portion; When the third locking block is in the first state, the first curved surface is self-locked relative to the outer arc surface along the reverse direction of the preset direction, and the second curved surface is self-locked relative to the pushing portion along the reverse direction of the preset direction.

19. The tiller position adjustment device according to claim 18, Features: The retaining frame is rotatably connected to the base, and the retaining frame and the rotating part are coaxial.

20. The tiller position adjustment device according to claim 19, Features: A third elastic member is provided between the third locking block and the retaining frame, and the third elastic member is used to apply an elastic force to the third locking block so that the first curved surface maintains contact with the outer arc surface; A fourth elastic member is disposed between the retaining frame and the base, and the fourth elastic member is used to apply an elastic force to the retaining frame so that the second curved surface maintains contact with the pushing portion.

21. The tiller position adjustment device according to claim 19, Features: A fifth elastic member is provided between the pushing portion and the retaining frame. The fifth elastic member is located on a side of the locking assembly away from the rotating portion. The fifth elastic member is used to apply an elastic force to the retaining frame so that the first curved surface maintains contact with the outer arc surface and the second curved surface maintains contact with the pushing portion.

22. The tiller position adjustment device according to claim 17, Features: The frame also includes a knob, the knob shaft is connected to the locking assembly, and the knob is used to drive the locking assembly to rotate so that the locking assembly is separated from the base and the pushing part.

23. The tiller position adjustment device according to any one of claims 17 to 22, Features: The tiller handle connecting member also includes a limiting protrusion, which is arranged on a side of the rotating part away from the pushing part. The frame is provided with a supporting part, which is arranged on the base and located on a side of the tiller handle connecting member away from the retaining frame. During the rotation of the tiller handle connecting member, the supporting part is used to resist the limiting protrusion or the rotating part to limit the rotation range of the tiller handle connecting member.

24. The tiller position adjustment device according to claim 23, Features: The abutting portion includes a first abutting surface and a second abutting surface which are arranged at an angle, wherein the first abutting surface is used to abut the limiting protrusion, and the second abutting surface is used to abut the rotating portion.

25. The tiller position adjusting device according to any one of claims 17 to 22, Features: A protrusion is provided on one side of the pushing part along the axis of rotation of the rotating part, and the base is provided with a first limit member and a second limit member, a limit angle is formed between the first limit member and the second limit member, and when the tiller handle connecting part rotates around the frame, the protrusion moves within the limit angle.

26. The tiller position adjustment device according to claim 1, Features: The locking assembly includes a one-way bearing, which is connected between the tiller handle connecting member and the frame. When the one-way bearing is in the first state, it allows the tiller handle connecting member to be adjusted to any position relative to the frame along a preset direction, and locks the tiller handle connecting member to be adjusted relative to the frame in the opposite direction of the preset direction. When the one-way bearing is in the second state, it allows the tiller handle connecting member to be adjusted to any position relative to the frame along the preset direction or in the opposite direction of the preset direction.

27. The tiller position adjustment device according to claim 1, Features: The frame includes a base with a rotating hole formed on the base; and also includes a rotating member, which is rotatably connected to the base and partially disposed in the rotating hole. The tiller handle connecting member is connected to the rotating member axis, and a sliding groove is formed between the inner side wall of the rotating hole and the outer side wall of the rotating member. The locking assembly is movably disposed in the sliding groove, and the sliding groove is used to switch the locking assembly between the first state or the second state.

28. The tiller position adjustment device according to claim 27, Features: The sliding groove comprises a first section and a second section connected to each other, and along the radial direction of the rotating member, the width of the first section is greater than the width of the second section, and the width of the first section is greater than the diameter of the locking assembly, and the width of the second section is smaller than the diameter of the locking assembly; When the locking assembly is located in the first section, the locking assembly is in the second state; when the locking assembly is located in the second section, the locking assembly is in the first state, and the locking assembly is relative to the inner side wall of the rotating hole in the opposite direction of the preset direction. The outer side wall of the rotating member is self-locking.

29. The tiller position adjustment device according to claim 28, Features: The frame further includes a sixth elastic member and a limiting member, the sixth elastic member is located in the first section, one end of the sixth elastic member is connected to the inner side wall of the rotating hole, the other end of the sixth elastic member is connected to the locking assembly, and the limiting member is pullably arranged in the second section; When the limiting member is inserted into the second section, the limiting member abuts against the locking assembly, so that the locking assembly is limited to the first section; When the limiting member is withdrawn from the second section, the sixth elastic member is used to push the locking assembly to the second section.

30. The tiller position adjustment device according to claim 29, Features: The frame also includes a stationary wheel, which is fixed on the base, and the rotating hole is opened in the stationary wheel.

31. The tiller position adjustment device according to claim 30, Features: A through hole is provided on one side of the stationary wheel corresponding to the second section along the radial direction of the stationary wheel, and the limiting member is movably disposed in the through hole.

32. The tiller position adjustment device according to claim 29, Features: The frame further comprises an unlocking member, the unlocking member is connected to the limiting member, and the unlocking member is movably connected to the base, and the unlocking member is used to drive the limiting member to be inserted into the second section or to be withdrawn from the second section.

33. The tiller position adjustment device according to claim 29, Features: One end of the limiting member has a limiting recess, and when the limiting member is inserted into the second section, the locking assembly is partially disposed in the limiting recess.

34. The tiller position adjustment device according to claim 30, Features: The stationary wheel includes a first part and a second part which are arranged opposite to each other, the rotating member is located between the first part and the second part, the inner side wall of the first part is spaced apart from the rotating member to form the sliding groove, and the inner side wall of the second part is coaxial with the outer side wall of the rotating member.

35. The tiller position adjustment device according to claim 34, Features: The inner side wall of the second part is clearance-matched with the outer side wall of the rotating member.

36. The tiller position adjustment device according to any one of claims 28 to 35, Features: The sliding groove further includes a third section, the third section and the first section are respectively arranged at two ends of the second section, and along the radial direction of the rotating member, the width of the third section is greater than the width of the second section; The two locking components are movably arranged in the sliding groove. When one locking component is limited to the first section and the other locking component is limited to the third section, the rotating member can rotate in any direction relative to the base. When both locking components are located in the second section, both locking components abut against the outer wall of the rotating member and the inner wall of the rotating hole. The two locking components are self-locked with the outer wall of the rotating member and the inner wall of the rotating hole along the preset direction and the opposite direction of the preset direction to limit the rotation of the rotating member relative to the base.

37. The tiller position adjustment device according to any one of claims 27 to 35, Features: The frame also includes a limit bearing, which is fixed in the rotating hole, and the rotating member is provided with a rotating shaft fixedly matched with the limit bearing.

38. The tiller position adjustment device according to claim 1, Features: The locking assembly is in the first state, and when the tiller handle connecting member adjusts its position relative to the frame along a preset direction, the locking assembly can rotate relative to the tiller handle connecting member. When the tiller handle connecting member adjusts its position relative to the frame in the opposite direction of the preset direction, the locking assembly resists the tiller handle connecting member and self-locks relative to the tiller handle connecting member in the opposite direction of the preset direction to limit the adjustment position of the tiller handle connecting member relative to the frame.

39. The tiller position adjustment device according to claim 1, Features: The locking assembly has a first locking curved surface, the tiller handle connecting member has a second locking curved surface, and the first locking curved surface is detachably contacted with the second locking curved surface.

40. The tiller position adjustment device according to claim 1, Features: The locking assembly is elastically connected to the frame so that the locking assembly can detachably contact the tiller handle connecting member.

41. A tiller, It is characterized in that It comprises a tiller handle body and the tiller handle position adjustment device according to any one of claims 1 to 40, wherein the tiller handle body is coupled to the tiller handle connecting piece.

42. A water propeller, It is characterized in that It comprises a tiller handle body, a propulsion main engine, a propeller and a tiller handle position adjustment device as described in any one of claims 1-40, wherein the propulsion main engine is connected to the propeller, and the tiller handle position adjustment device couples the tiller handle body and the propulsion main engine for adjusting the operating position of the tiller handle body.

43. The water propeller according to claim 42, It is characterized in that The propulsion main engine is used to couple with a movable carrier in water areas, the propeller is arranged under the water surface to provide propulsion force to the movable carrier in water areas, and the tiller position adjustment device is used to adjust the operating position of the tiller body relative to the movable carrier in water areas.

44. The water propeller according to claim 42, It is characterized in that The propulsion main engine includes a connected mounting frame and a main body, the mounting frame is used to install the main body to a movable carrier in the water area, the propeller is coupled to the main body and is arranged under the water surface, the main body is used to drive the propeller to rotate to provide propulsion force to the movable carrier in the water area, and the tiller handle body position adjustment device is used to adjust the operating position of the tiller handle body relative to the movable carrier in the water area.

45. A movable device in water area, It is characterized in that It comprises a carrier and a water area thruster as described in any one of claims 42-44, wherein the water area thruster is installed at one end of the carrier and is used to push the carrier.

46. ​​The mobile device for use in water area according to claim 45, It is characterized in that The carrier has a carrying cabin. When the tiller connecting piece in the water area thruster is adjusted relative to the frame, the tiller main body of the water area thruster can be accommodated in the carrying cabin or moved out of the carrying cabin.

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