Medium-low speed light load overrun clutch

Abstract

The utility model belongs to the technical field of transmission devices, and particularly relates to a medium-low speed light load overrun clutch which comprises a driving wheel, a combination sleeve and a driven wheel, one end of the driving wheel is provided with a first flange plate structure with the height gradually increased, and the head end and the tail end of the first flange plate structure are connected with a first boss; the combination sleeve is slidably and hollowly sleeved on the outer wall of the supporting shaft, one end of the combination sleeve is provided with a second flange plate structure with the height gradually increased, and the head end and the tail end of the second flange plate structure are connected with the second boss; the first flange plate structure is connected with the second boss in a meshed mode, and the second flange plate structure is connected with the first boss in a meshed mode. A first one-way tooth is arranged at the other end of the combination sleeve, a second one-way tooth is arranged at one end of the driven wheel, and the first one-way tooth and the second one-way tooth are connected in a single meshing mode. According to the clutch, a control device is omitted, automatic meshing or automatic separation can be achieved according to the rotating speed difference of the driving wheel and the driven wheel in the working process, and the good energy-saving effect is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of transmission devices, in particular to a medium-low speed and light-load overrunning clutch. Background Art

[0002] The design of energy-saving vehicles takes into account that the vehicle must have very good gliding ability when gliding, so when the engine is stopped, the rolling resistance of the wheels must be minimized. This requires that the wheels must rotate independently during gliding and cannot rotate with the engine. This determines that the one-way clutch of energy-saving vehicles is different from the common one-way clutch, so the design requires that the one-way clutch must be in a disengaged state when the vehicle is gliding, and cannot add resistance to the wheels, and can be smoothly engaged and transmit power to the wheels when the engine is driven.

[0003] Existing one-way clutches: conventional overrunning clutches, bicycle flywheels, lever-type ratchet clutches, spring-type ratchet clutches, etc., have the following disadvantages:

[0004] 1. The overrunning clutch has large rolling resistance and is difficult to install;

[0005] 2. The sliding resistance of the bicycle flywheel is large and the transmitted torque is small;

[0006] 3. Lever ratchet clutch, complex structure and complicated operation;

[0007] 4. The spring ratchet clutch has unstable separation and cannot be completely separated, and has large sliding resistance. Utility Model Content

[0008] In view of the technical problems existing in the background technology, the utility model provides a medium-to-low speed light-load overrunning clutch, which omits the control device and can automatically engage or disengage according to the speed difference between the driving wheel and the driven wheel during the working process, thereby having a good energy-saving effect.

[0009] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0010] A medium-to-low speed light-load overrunning clutch comprises a driving wheel, a coupling sleeve and a driven wheel, wherein the driving wheel is connected to a power input device and is mounted on a supporting shaft; a flange disc structure 1 with a gradually increasing height is provided at one end of the driving wheel, and the flange disc structure is connected to a boss 1 at both ends; the coupling sleeve is slidably sleeved on the outer wall of the supporting shaft, a flange disc structure 2 with a gradually increasing height is provided at one end of the coupling sleeve, and the flange disc structure 2 is connected to a boss 2 at both ends; the flange disc structure 1 is meshingly connected to the boss 2, and the flange disc structure 2 is meshingly connected to the boss 1; a one-way tooth 1 is provided at the other end of the coupling sleeve, and a one-way tooth 2 is provided at one end of the driven wheel, and the one-way tooth 1 is single-meshingly connected to the one-way tooth 2; the driven wheel is connected to a power output device, and the flange disc structure 1 can rotate to push the coupling sleeve to move axially, so as to cause the coupling sleeve to mesh with the driven wheel to transmit power.

[0011] Optionally, the tooth shape of the one-way tooth one and the one-way tooth two is designed as a single-sided involute gear.

[0012] Optionally, the power output device is a wheel, and the wheel is mounted on the support shaft through bearing 2.

[0013] Optionally, the driving wheel is any one of a gear and a sprocket.

[0014] Optionally, a flange is provided at one end of the driven wheel, a plurality of connection holes are opened on the circumference of the flange, and the wheel and the flange are connected by a bolt assembly.

[0015] Optionally, the driving wheel, the flange disc structure 1, and the boss 1 are manufactured as one piece.

[0016] Optionally, the flange disc structure 1 and the boss 1 are integrally manufactured and detachably connected to the driving wheel.

[0017] Optionally, the top surface of the flange disk structure 1 is sequentially a first plane, a first inclined plane, and a second plane, the height of the first plane is higher than the second plane, and the height of the boss 1 is higher than the first plane; one side of the boss 1 is docked with the first plane, and the other side is docked with the second plane.

[0018] Optionally, the top surface of the flange disk structure 2 is a third plane, a second inclined plane and a fourth plane in sequence, the height of the third plane is higher than the fourth plane, and the height of the boss 2 is higher than the third plane; one side of the boss 2 is docked with the third plane, and the other side is docked with the fourth plane.

[0019] Optionally, a lubrication hole is provided inside the boss one.

[0020] The utility model has the following advantages and beneficial effects:

[0021] The medium-low speed and light-load overrunning (one-way) clutch of the utility model omits the control device. The working process can automatically mesh or automatically separate according to the speed difference between the driving wheel and the driven wheel, and has a good energy-saving effect. When the speed of the driving wheel is higher than the speed of the coupling sleeve, the flange disc structure 1 on the driving wheel is combined with the flange disc structure 2 of the coupling sleeve to push the coupling sleeve to move axially toward the driven wheel. When the speed of the coupling sleeve is greater than that of the driven wheel, the coupling teeth are meshed, and finally the coupling sleeve strings the driving wheel and the driven wheel into a whole and rotates synchronously together to transmit power. When the speed of the driving wheel is lower than that of the driven wheel, due to the speed difference, the speed of the driven wheel is higher, and the outer arc tooth shape of the one-way involute gear is used to push out the meshing coupling sleeve gear, so that its connection is interrupted, and the driven wheel can rotate freely. Therefore, when the engine is driven, the driving wheel and the driven wheel can be automatically connected; when the engine stops and enters the sliding stage, the driving wheel and the driven wheel can be automatically separated. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A cross-sectional view of a medium-low speed and light-load overrunning clutch provided by the utility model;

[0023] Figure 2 A cross-sectional view of a flange plate structure 1 and a boss 1 provided by the utility model;

[0024] Figure 3 An expanded view of a flange plate structure 1 and a boss 1 provided by the utility model;

[0025] Figure 4 A cross-sectional view of the coupling sleeve provided by the utility model;

[0026] Figure 5 An expanded view of the combination sleeve provided by the utility model;

[0027] Figure 6 A cross-sectional view of the driven wheel provided by the utility model;

[0028] Figure 7 for Figure 6 Bottom view of

[0029] Icons: 1-flange structure one, 11-boss one, 12-first plane, 13-first inclined plane, 14-second plane, 2-combination sleeve, 21-boss two, 22-third plane, 23-second inclined plane, 24-fourth plane, 25-one-way tooth one, 26-lubrication hole, 3-driven wheel, 31-one-way tooth two, 32-flange, 33-connecting hole, 4-driving wheel, 5-bearing one, 6-support shaft, 7-wheel, 8-bearing two. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example

[0033] like Figures 1 to 7 As shown, a medium-low speed light-load overrunning clutch includes a driving wheel 4, a coupling sleeve 2, a driven wheel 3 and other components. The driving wheel 4 is connected to the power input device and is installed on the support shaft 6; one end of the driving wheel 4 is provided with a flange disc structure 1 with a gradually increasing height, and the flange disc structure 1 is connected to a boss 11 at both ends. The coupling sleeve 2 is slidably sleeved on the outer wall of the support shaft 6, and one end of the coupling sleeve 2 is provided with a flange disc structure 2 with a gradually increasing height, and the flange disc structure 2 is connected to a boss 2 21 at both ends; the flange disc structure 1 is meshedly connected with the boss 2 21, and the flange disc structure 2 is meshedly connected with the boss 11. A one-way tooth 25 is provided at the other end of the coupling sleeve 2, and a one-way tooth 2 31 is provided at one end of the driven wheel 3. The one-way tooth 25 and the one-way tooth 2 31 are meshed and connected; the driven wheel 3 is connected to the power output device, and the flange structure 1 can rotate to push the coupling sleeve 2 to move axially, so that the coupling sleeve 2 and the driven wheel 3 are meshed to transmit power.

[0034] like Figure 2 , Figure 3 As shown, the top surface of the flange disk structure 1 is sequentially a first plane 12, a first inclined surface 13 and a second plane 14. The height of the first plane 12 is higher than the second plane 14, and the height of the boss 11 is higher than the first plane 12. One side of the boss 11 is connected to the first plane 12, and the other side is connected to the second plane 14.

[0035] like Figure 4 , Figure 5 As shown, the top surface of the flange disc structure 2 is sequentially a third plane 22, a second inclined surface 23 and a fourth plane 24. The height of the third plane 22 is higher than the fourth plane 24, and the height of the second boss 21 is higher than the third plane 22. One side of the second boss 21 is butted against the third plane 22, and the other side is butted against the fourth plane 24. The first inclined surface 13 and the second inclined surface 23 have the same cone angle.

[0036] like Figure 1 As shown, at this time, the coupling sleeve 2 and the driving wheel 4 are fitted, and the coupling sleeve 2 and the driven wheel 3 are separated. At this time, the top surface of the boss 11 is close to the fourth plane 24 (the lowest surface of the coupling sleeve 2), and the top surface of the boss 21 is close to the second plane 14 (the lowest surface of the driving wheel 4).

[0037] When the driving wheel 4 rotates, the boss 1 11 is driven to move on the second inclined surface 23, and the boss 2 21 is driven to move on the first inclined surface 13, gradually squeezing the coupling sleeve 2 and pushing it to move axially (slide toward the driven wheel 3) until the coupling sleeve 2 and the driven wheel 3 are fully engaged and connected.

[0038] like Figures 4 to 7 As shown, further, the tooth profile of the one-way tooth 1 25 and the one-way tooth 2 31 is designed as a single-sided involute gear. The tooth profile is designed as a single-sided involute gear, which is conducive to rapid meshing and reduces meshing impact.

[0039] like Figure 1 As shown, further, the power output device is a wheel 7, and the wheel 7 is rotatably mounted on the support shaft 6 through a bearing 8.

[0040] In the present invention, the driving wheel 4 is any one of a gear and a sprocket.

[0041] like Figure 1 , 6 As shown in , 7, a flange 32 is provided at one end of the driven wheel 3, and a plurality of connection holes 33 are opened on the circumference of the flange 32. The wheel 7 and the flange 32 are connected by a bolt assembly to realize a detachable connection between the driven wheel 3 and the power output device.

[0042] like Figure 1 As shown, as a preferred embodiment of the present invention, the driving wheel 4, the flange plate structure 1, and the boss 11 are integrally processed.

[0043] As another preferred embodiment of the utility model, the flange disk structure 1 and the boss 11 are integrally processed and detachably connected to the driving wheel 4, similar to the bolted connection between the driven wheel 3 and the power output device. The detachable connection facilitates the disassembly and assembly of the driving wheel 4 and the flange disk structure 1.

[0044] Furthermore, lubrication holes 26 are provided inside the boss 11, which can be filled with lubricating oil or grease. The inner diameter of the coupling sleeve 2 is larger than the outer diameter of the support shaft 6, and the coupling sleeve 2 is installed in a hollow sleeve on the support shaft 6, which can rotate freely. Lubricating oil holes and oil grooves are designed on both sides of the coupling sleeve 2, which can be filled with lubricating oil or grease, and the working state is liquid contact sliding friction.

[0045] like Figure 1As shown, the driving wheel 4 is rotatably arranged on the support shaft 6 through a bearing 5; of course, other connection methods can also be used, such as connecting the driving wheel 4 and the support shaft 6 with a keyway or key.

[0046] Working principle:

[0047] During the rotational starting process, there is a rotational speed difference between the driving wheel 4 of the overrunning (one-way) clutch and the coupling sleeve 2 (the coupling sleeve 2 is free), so circular relative motion between the driving wheel 4 and the coupling sleeve 2 can be achieved, and the driving wheel 4 has a cam curve profile in the axial direction, thereby pushing the coupling sleeve 2 to move axially and engage with the driven wheel 3.

[0048] Driven wheel 3 starts at zero speed:

[0049] The overrunning (one-way) clutch driving wheel 4 is connected to the power input device and can rotate independently. As the flange disk structure 1 on the driving wheel 4 rotates, the coupling sleeve 2 is pushed to move axially, causing the one-way tooth 1 25 of the coupling sleeve 2 to mesh with the one-way tooth 2 31 of the clutch driven wheel 3; as the driving wheel 4 continues to rotate, the driving wheel 4, the coupling sleeve 2, and the driven wheel 3 are meshed as a whole to transmit power.

[0050] Glide away:

[0051] When the speed of the driving wheel 4 is lower than that of the driven wheel 3, the driven wheel 3 has a higher speed due to the speed difference, and the outer arc tooth shape of the one-way tooth 2 31 is used to push out the meshing one-way tooth 1 25 of the coupling sleeve 2, so that the connection between the two is interrupted, and the driven wheel 3 can rotate freely.

[0052] Acceleration after coasting:

[0053] When the speed of the driving wheel 4 is higher than that of the driven wheel 3, due to the speed difference, the driving wheel 4 will push the coupling sleeve 2 to move axially. When the speed of the coupling sleeve 2 is greater than that of the driven wheel 3, the coupling teeth will mesh, and finally the coupling sleeve 2 will string the driving wheel 4 and the driven wheel 3 into a whole to rotate synchronously and transmit power.

[0054] The overrunning (one-way) clutch of the utility model omits a control device, and can automatically engage or disengage according to the speed difference between the driving wheel 4 and the driven wheel 3 during the working process, thereby achieving good energy-saving effect.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A medium-low speed light-load overrunning clutch, characterized in that :Including driving wheel, coupling sleeve, driven wheel, The driving wheel is connected to the power input device, and the driving wheel is installed on the support shaft; one end of the driving wheel is provided with a flange disc structure with a gradually increasing height, and the flange disc structure is connected to a boss at both ends; The coupling sleeve is slidably sleeved on the outer wall of the support shaft, and one end of the coupling sleeve is provided with a flange disc structure 2 with a gradually increasing height, and the two ends of the flange disc structure 2 are connected to the boss 2; The flange structure 1 is meshedly connected with the boss 2, and the flange structure 2 is meshedly connected with the boss 1; The other end of the coupling sleeve is provided with a one-way tooth 1, and one end of the driven wheel is provided with a one-way tooth 2, and the one-way tooth 1 and the one-way tooth 2 are in single meshing connection; The driven wheel is connected to the power output device, and the flange disc structure can rotate to push the coupling sleeve to move axially, so as to cause the coupling sleeve to mesh with the driven wheel to transmit power.

2. The medium-low speed and light-load overrunning clutch according to claim 1, characterized in that: The tooth shapes of the one-way tooth 1 and the one-way tooth 2 are designed as single-sided involute gears.

3. The medium-low speed and light-load overrunning clutch according to claim 1, characterized in that: The power output device is a wheel, and the wheel is installed on the support shaft through a second bearing.

4. The medium-low speed and light-load overrunning clutch according to claim 1, characterized in that: The driving wheel is any one of a gear and a sprocket.

5. The medium-low speed light-load overrunning clutch according to claim 3, characterized in that: A flange is arranged at one end of the driven wheel, a plurality of connection holes are opened on the circumference of the flange, and the wheel and the flange are connected by a bolt assembly.

6. The medium-low speed and light-load overrunning clutch according to claim 1, characterized in that: The driving wheel, the flange disc structure 1 and the boss 1 are integrally processed and manufactured.

7. The medium-low speed light-load overrunning clutch according to claim 1, characterized in that: The flange plate structure 1 and the boss 1 are integrally manufactured and are detachably connected to the driving wheel.

8. The medium-low speed and light-load overrunning clutch according to claim 1, characterized in that: The top surface of the flange disk structure 1 is a first plane, a first inclined plane and a second plane in sequence, the height of the first plane is higher than the second plane, and the height of the boss 1 is higher than the first plane; one side of the boss 1 is connected to the first plane, and the other side is connected to the second plane.

9. The medium-low speed and light-load overrunning clutch according to claim 1, characterized in that: The top surface of the flange disk structure 2 is the third plane, the second inclined plane and the fourth plane in sequence, the height of the third plane is higher than the fourth plane, and the height of the boss 2 is higher than the third plane; one side of the boss 2 is connected to the third plane, and the other side is connected to the fourth plane.

10. The medium-low speed and light-load overrunning clutch according to claim 1, characterized in that: A lubrication hole is arranged inside the boss 1.

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