JP4870196B2 - Flywheel - Google Patents

Description

  The present invention relates to a type of flywheel structure capable of forward / reverse idling.

  In general, a known reciprocating flywheel structure attached to a traffic tool is as shown in FIGS. 1 and 2 and includes an outer sprocket 10, a main body 20, a rotating shaft 30, a spiral spring 40, a cover 50 and a driving gear 60. . Among them, the outer sprocket 10 has a hollow shape, and a unidirectional ratchet tooth 101 of one round is formed on the inner peripheral surface thereof. The main body 20 is installed inside the outer sprocket 10, and at least one claw 201 is provided on the outer peripheral surface of the main body 20. A combined state can be formed, and a storage chamber 203 is formed outside the main body 20. The rotary shaft 30 is inserted through the center of the main body 20 and is fixed to the drive gear 60 on the other side of the main body 20. The spiral spring 40 is provided in the storage chamber 203 of the main body 20, and its outer end is fixed to the inner wall surface of the storage chamber 203 of the main body 20, and the inner end is fixed to the rotating shaft 30. The cover 50 is installed on the opposite side of the main body 20. The drive gear 60 is installed on the side opposite to the spiral spring 40 and is fixed to the rotating shaft 30. At the time of assembly, a reciprocating flywheel is first attached to an appropriate position of the traffic tool, the drive device 70 of the traffic tool and the drive gear 60 of the flywheel are connected, and the outer sprocket 10 of the flywheel is connected to the wheel of the traffic tool. .

  Thereby, when the driving device 70 of the traffic tool drives the drive gear 60 to rotate it clockwise, as shown in FIG. 3 (the main body 20 is not shown in the drawing), the drive gear 60 is The main body 20 is driven and rotated through the rotation shaft 30, the claw 201 of the main body 20 is engaged with the unidirectional ratchet teeth 101 of the outer sprocket 10, and the outer sprocket 10 is driven and rotated synchronously. The wheel of the traffic tool is driven to advance, and at this time, the spiral spring 40 is tightly wound. Conversely, when the drive device 70 returns to its original position, as shown in FIG. 4 (the body 20 is not shown in the figure), the spiral spring 40 is opened, and the body 20 is driven and reversed. At this time, the claw 201 of the main body 20 disengages the unidirectional ratchet teeth 101 of the outer sprocket 10, and at this time, the main body 20 cannot drive the outer sprocket 10 and keeps idling. When the drive device 70 drives the drive gear 60 again, the operation of FIG. 3 is performed again. As described above, the known reciprocating flywheel drives the main body 20 to generate the reciprocating rotation and drives the outer sprocket 10 through the driving of the driving device 70 and the operation of tightening and releasing the spiral spring 40. To generate a unidirectional rotation.

  As can be seen from the above description, the outer sprocket of the known reciprocating flywheel is merely a power transmission tool that is driven by the main body and slightly drives the wheel to rotate in one direction. Furthermore, in order to generate unidirectional drive, it is necessary to design the directional restriction between the unidirectional ratchet teeth of the outer sprocket and the claw of the main body, and this restriction is caused by the main sprocket and the outer sprocket. Rotate the wheel in the forward direction. However, this direction restriction is that when the wheel rotates in the opposite direction, the unidirectional ratchet teeth of the outer sprocket and the claw of the main body are locked, and the power of the outer sprocket is the main body, spiral spring, rotating shaft and drive gear. Insufficient to drive such parts, the wheels get caught and cause a phenomenon that reverse rotation is impossible. In other words, all of the traffic tools equipped with the well-known reciprocating flywheels do not have a reverse function, and are usually unable to move backward, thus forming many inconveniences and problems in use.

  The present invention provides a kind of flywheel, which includes an outer sprocket, a main body, a rotating shaft, a spiral spring, a cover, and a driving gear, and the outer sprocket has a hollow shape and has a single unidirectional ratchet on its inner peripheral surface. Teeth are formed, the main body includes a cylindrical body inserted into the outer sprocket, a receiving groove is formed on the outer peripheral surface of the cylindrical body, and a concave groove is provided on the bottom surface of the receiving groove. An elastic part is installed in the groove, a claw corresponding to the ratchet tooth is provided in the receiving groove, an inner concave receiving chamber is provided outside the main body, the rotating shaft is inserted into the main body, and another part of the main body is provided. The spiral spring is housed in the housing chamber of the main body, its outer end is fastened to the inner wall surface of the housing chamber of the main body, and the inner end is fastened to the rotating shaft, The cover is installed on a surface of the main body opposite to the storage chamber, A moving gear is inserted into the main body and is connected to the rotary shaft, and a connecting rod is extended from the claw, and one end of the connecting rod extends outside the main body and is fixed to the control rod. Thus, the control rod drives the claw to rotate eccentrically in the receiving groove, and the claw can be detached from the ratchet teeth of the outer sprocket.

  The flywheel of the present invention maintains the state that the pawl is constantly detached from the ratchet teeth when the traffic tool is stationary, and thus the outer sprocket can freely rotate clockwise or counterclockwise. It can move forward even when the drive is not driven, and achieves a free reverse function not found in traditional flywheels, and the drive of the traffic tool includes a drive gear, a rotating shaft, a spiral spring and When the main body is driven to start rotating, the pawl automatically rises to form a locking state with the ratchet teeth, and drives the outer sprocket and wheels to advance.

It is a three-dimensional exploded view of a known flywheel. It is a three-dimensional exploded view from another angle of a known flywheel. It is the operation | movement display figure 1 of a known flywheel. It is operation | movement display figure 2 of a known flywheel. It is a three-dimensional exploded view of the flywheel of the present invention. It is a three-dimensional exploded view from another angle of the flywheel of the present invention. It is a three-dimensional external view of the present invention. It is a reverse drive possible state display figure of this invention. It is the drive state display diagram of this invention. FIG. 3 is a driving state display diagram 2 of the present invention. It is a rotation state display figure of the present invention. It is a combination display figure of the outer sprocket of a different shape of the present invention. It is a three-dimensional exploded view of the second embodiment of the present invention. It is a three-dimensional external view of 2nd Example of this invention. It is a reverse possible state display figure of 2nd Example of this invention.

  As shown in FIGS. 5, 6, and 7, the present invention provides a kind of flywheel, which uses any metal material such as steel, iron, aluminum, titanium, forging, powder metallurgy material, etc. Alternatively, it is formed of a composite material such as carbon fiber, glass fiber, or plastic, and includes an outer sprocket 1, a main body 2, a rotating shaft 3, a spiral spring 4, a cover 5, and a driving gear 6.

  Among them, the outer sprocket 1 has a hollow shape, and a single unidirectional ratchet tooth 11 is formed on the inner peripheral surface thereof.

  The main body 2 includes a cylindrical body 21 to be inserted into the outer sprocket 1, a receiving groove 22 is formed on the outer peripheral surface of the cylindrical body 21, and a concave groove 221 is provided on the bottom surface of the receiving groove 22, An elastic part 23 is installed in the concave groove 221, and a claw 24 is fitted in the receiving groove 22. The claw 24 includes a circular rotation end 241 and a tooth-like locking end 242, and is connected to the circular rotation end 241. The rod 243 is extended, and one end of the connecting rod 243 extends to the outside of the main body 2 and is fixed to the control rod 25. The fixing method is a non-circular pivot type coupling or a pin insertion type coupling shown in the figure. Can be. A storage chamber 26 that is recessed inward is provided on the outside of the main body 2.

  The rotating shaft 3 is inserted into the center of the main body 2 and fixed to the drive gear 6 on the other side of the main body.

  The spiral spring 4 is installed in the storage chamber 26 of the main body 2, and an outer end thereof is fixed to the inner wall surface of the storage chamber 26 of the main body 2, and an inner end is fixed to the rotating shaft 3.

  The cover 5 is combined on the opposite side of the main body 2 from the side where the accommodation chamber 26 is provided.

  The drive gear 6 is fixed to the rotary shaft 3 and is located on the side opposite to the spiral spring 4.

  The method of use of the present invention is to directly attach the flywheel of the present invention to an appropriate position of the traffic tool and connect it with the drive device 7 of the traffic tool, for example, as shown in FIG. 8 (the main body 2 is shown in the figure). And the control rod 25 ′ indicated by a dotted line indicates the angle when the pressing device 71 is not installed), and the pressing device 71 is provided in a portion corresponding to the control rod 25 of the main body 2 of the traffic tool, and The pressing device 71 keeps the state in which the control rod 25 is constantly pressed when the flywheel of the present invention is stationary. In other words, when the flywheel of the present invention is not driven, the pressing device 71 constantly presses the control rod 25, and the control rod 25 drives the claw 24 inside the main body 2 to ratchet the locking end 242 of the claw 24. Since the claw 24 and the ratchet teeth 11 are not locked, the outer sprocket 1 of the present invention is free to rotate, and thus can be freely rotated synchronously with the wheel of the traffic tool. Thus, the traffic tool has a reverse function.

  Further, when operating the driving device 7 of the traffic tool, the driving device 7 drives the driving gear 6, the rotating shaft 3, the spiral spring 4 and the main body 2 to rotate synchronously clockwise, as shown in FIGS. When the main body 2 is driven, the control rod 25 is detached from the pressing device 71. At this time, the elastic part 23 in the receiving groove 22 pushes up the claw 24, and the locking end 242 of the claw 24 is moved to the ratchet of the outer sprocket 1. The outer sprocket 1 is driven to be synchronously rotated, and the outer sprocket 1 is driven by the wheels of the traffic tool to advance the traffic tool. When the external force of the driving device 7 disappears, as shown in FIG. 11, the spiral spring 4 recovers and expands, drives the rotating shaft 3, and synchronously rotates the driving gear 6 and the main body 2 counterclockwise. At this time, the claw 24 of the main body 2 cannot lock the ratchet teeth 11 of the outer sprocket 1 and cannot drive the outer sprocket 1, that is, the outer sprocket 1 rotates in the counterclockwise direction, the rotating shaft 3, the driving gear 6 and the main body 2 are restored to the state shown in FIG. 8, and when the driving device 7 drives the driving gear 6 again to rotate it clockwise, the main body 2 is again connected to the outer sprocket 1 and FIGS. And the wheel of the traffic tool is driven forward.

  Further, the shape of the sprocket teeth of the outer sprocket 1 of the present invention can be changed as shown in FIG.

  From the above, the flywheel of the present invention keeps the pawls constantly detached from the ratchet teeth when the traffic tool is stationary, and this allows the outer sprocket to freely rotate clockwise or counterclockwise. Therefore, it is possible to move forward even in a situation where the driving device is not driven, and to achieve a free reverse function that is not found in a traditional flywheel, and the driving device of the traffic tool includes a driving gear, a rotating shaft, When the spiral spring and the body are driven to start rotation, the pawl automatically rises to form a locking state with the ratchet teeth, and drives the outer sprocket and wheels to advance.

  Furthermore, the structure of the flywheel of the present invention can include the above-described spiral spring, as well as the changes shown in FIGS.

  FIGS. 13 and 14 show a flywheel provided by a second embodiment of the present invention, which includes an outer sprocket 1, a main body 2, a rotating shaft 3, a spiral spring 4, a cover 5 and a drive gear 6. .

  Among them, the outer sprocket 1 has a hollow shape, and a single unidirectional ratchet tooth 11 is formed on the inner peripheral surface thereof.

  The main body 2 includes a cylindrical body 21 to be inserted into the outer sprocket 1, a receiving groove 22 is formed on the outer peripheral surface of the cylindrical body 21, and a concave groove 221 is provided on the bottom surface of the receiving groove 22, An elastic part 23 is installed in the concave groove 221, and a claw 24 is fitted in the receiving groove 22. The claw 24 includes a circular rotation end 241 and a tooth-like locking end 242, and is connected to the circular rotation end 241. The rod 243 is extended, and one end of the connecting rod 243 extends to the outside of the main body 2 and is fixed to the control rod 25. The fixing method is a non-circular pivot type coupling or a pin insertion type coupling shown in the figure. Can be.

  The rotary shaft 3 is inserted into the center of the main body 2 and fixed to the drive gear 6 on the other side of the main body.

  The cover 5 is assembled on the opposite side of the main body 2.

  The drive gear 6 is fixed to the rotary shaft 3 and located on the other side of the main body.

  With the above arrangement, the flywheel of the second embodiment of the present invention is connected to the drive gear 6 and the drive device 7 in use, as shown in FIG. 15, and the drive device 7 drives the drive gear 6 to rotate clockwise. When rotating the motor, the drive gear 6 drives the rotary shaft 3 and the main body 2 to rotate synchronously, and the claw 24 of the main body 2 engages the ratchet teeth 11 of the outer sprocket 1, thereby rotating the outer sprocket 1 synchronously. And generate a traditional unidirectional transmission effect. In addition, when the outer sprocket 1 has to have a free rotation function, an external force is applied to the control rod 25, the claw 24 is pressed by the control rod 25, and the claw 24 is separated from the ratchet teeth 11, That is, the outer sprocket 1 can be rotated freely in the clockwise direction or freely counterclockwise, and the traffic tool is provided with a function capable of moving backward.

DESCRIPTION OF SYMBOLS 10 Outer sprocket 101 Ratchet tooth 20 Main body 201 Claw 202 Elastic part 203 Accommodating chamber 30 Rotating shaft 40 Spiral spring 50 Cover 60 Driving gear 70 Driving device 1 Outer sprocket 11 Ratchet tooth 2 Main body 21 Tubular body 22 Accommodating groove 221 Concave groove 23 Elasticity Parts 24 Claw 241 Rotating end 242 Locking end 243 Connecting rod 25, 25 'Control rod 26 Storage chamber 3 Rotating shaft 4 Spiral spring 5 Cover 6 Driving gear 7 Driving device 71 Pressing device

Claims (1)

  The outer sprocket includes an outer sprocket, a main body, a rotating shaft, a spiral spring, a cover, and a driving gear. The outer sprocket has a hollow shape and a single unidirectional ratchet tooth is formed on the inner peripheral surface thereof. A housing groove is formed on the outer peripheral surface of the tubular body, a concave groove is provided on the bottom surface of the housing groove, and an elastic component is installed in the concave groove. A claw corresponding to the ratchet teeth is provided, an inner recessed chamber is provided outside the main body, the rotation shaft is inserted into the main body, and is fixed to the drive gear on the other side of the main body. The main body is housed in the housing chamber, the outer end thereof is fixed to the inner wall surface of the main body of the main body, the inner end is fixed to the rotating shaft, and the cover is opposite to the main body of the housing chamber. The drive gear is inserted into the body and secured to the rotating shaft. In the flywheel, the connecting rod is extended from the claw, and one end of the connecting rod is extended to the outside of the main body and fixed to the control rod, whereby the control rod drives the claw and the receiving groove A flywheel characterized in that the pawl is disengaged from the ratchet teeth of the outer sprocket.

Images