Gear driving mechanism

Abstract

The utility model discloses a gear driving mechanism which comprises a fixing plate, a first output shaft, a second output shaft and a transmission shaft are arranged on the fixing plate in a rotating mode, the first output shaft and the second output shaft extend leftwards and rightwards in the axial direction of the transmission shaft, and the transmission shaft extends leftwards and rightwards in the axial direction of the transmission shaft. A first gear and a second gear are fixedly arranged on the first output shaft and the second output shaft respectively, a third gear and a fourth gear are fixedly arranged at the right end and the left end of the transmission shaft respectively, the first gear is in meshing transmission with the second gear, and the second gear is in meshing transmission with the third gear; and a driving shaft axially extending left and right is arranged on the left side of the first output shaft, a fifth gear is rotationally arranged at the left end of the driving shaft, a clutch piece is arranged at the right end of the driving shaft, and the fourth gear and the fifth gear are in meshing transmission. The transmission device is reasonable in structural design, and opposite rotation of the two output shafts can be changed into opposite rotation under the condition that the rotation direction of the driving shaft is not changed.

Description

Technical Field

[0001] The utility model relates to the technical field of gear drive, in particular to a gear drive mechanism. Background Art

[0002] In daily work, the motor shaft (or other drive shafts) of a motor is often used to drive a gear set, and then the gear set drives two guide rollers (or other output shafts) to rotate. For example, paper can pass between the two guide rollers, and the forward or backward movement of the paper can be realized through the rotational cooperation of the two guide rollers.

[0003] The problem of the prior art is that the current gear drive mechanism cannot achieve the change of the two output shafts from rotating towards each other to rotating in opposite directions while the rotation direction of the drive shaft remains unchanged, thus making the work inconvenient. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a gear drive mechanism to solve the technical problem that the current gear drive mechanism cannot achieve the change of the two output shafts from rotating towards each other to rotating in opposite directions while the rotation direction of the drive shaft remains unchanged, thus making the work inconvenient.

[0005] To achieve the above purpose, the technical solution of the utility model provides a gear drive mechanism, including a fixed plate. A first output shaft, a second output shaft, and a transmission shaft are rotatably arranged on the fixed plate. The axial directions of the first output shaft, the second output shaft, and the transmission shaft extend along the left and right. First gears and second gears are respectively and fixedly arranged on the first output shaft and the second output shaft. A third gear and a fourth gear are respectively and fixedly arranged at the right end and the left end of the transmission shaft. The first gear and the second gear are meshed and driven, and the second gear and the third gear are meshed and driven. A drive shaft with an axial direction extending along the left and right is arranged to the left of the first output shaft. A fifth gear is rotatably arranged at the left end of the drive shaft. A clutch member is arranged at the right end of the drive shaft. The fourth gear and the fifth gear are meshed and driven, and the drive shaft can drive the clutch member to rotate. The clutch member can move left and right on the drive shaft. The right end of the clutch member can be engaged and fixed with and disengaged from the first gear, and the left end of the clutch member can be engaged and fixed with and disengaged from the fifth gear.

[0006] Further, the first gear and the second gear are located to the left of the fixed plate. The left ends of the first output shaft and the second output shaft extend to the left of the fixed plate, and the right ends of the first output shaft and the second output shaft extend to the right of the fixed plate. The first gear and the second gear are respectively and fixedly arranged at the left ends of the first output shaft and the second output shaft. The third gear and the fourth gear are located to the left of the fixed plate, and the right end of the transmission shaft is rotatably matched with the fixed plate.

[0007] Further, a connecting plate is provided on the right side of the fixed plate, and the right ends of the first output shaft and the second output shaft are rotationally engaged with the connecting plate; the first output shaft and the second output shaft are distributed front and back, and the transmission shaft is located above the first output shaft and the second output shaft.

[0008] Further, a motor is provided on the left side of the fixed plate, and the two side edges of the fixed plate are respectively connected to the two side edges of the motor through connecting rods; the fifth gear, the clutch member, and the first gear are sequentially arranged between the motor and the fixed plate from left to right. The left end of the drive shaft passes through the fifth gear and is connected to the motor, and the motor can drive the drive shaft to rotate.

[0009] Further, an elastic member is provided between the right end of the fifth gear and the left end of the clutch member. The elastic member can drive the clutch member to move rightward on the drive shaft so that the right end of the clutch member can be engaged and fixed with the first gear.

[0010] Further, two support platforms extending leftward are provided on the left side wall of the fixed plate. The two support platforms are located on the front lower side and the rear lower side of the first gear; the two support platforms are respectively rotationally engaged with the front and rear side walls of the middle part of the handle. A socket hole is provided at the top end of the handle, and the socket hole is sleeved on the clutch member with a clearance fit. The bottom end of the handle extends downward and can be operated by being toggled left and right. The handle can drive the clutch member to move leftward on the drive shaft so that the left end of the clutch member can be engaged and fixed with the fifth gear.

[0011] Further, U-shaped grooves are respectively provided at the left ends of the two support platforms, and rotating rods are respectively provided on the front and rear side walls of the middle part of the handle. The two U-shaped grooves are respectively rotationally engaged with the two rotating rods; the clutch member is in the shape of a cylinder axially extending left and right, a retaining ring is provided on the outer circumference of the clutch member, the socket hole is a circular hole, the socket hole is sleeved on the outer circumference of the clutch member with a clearance fit, and the retaining ring is located on the left side of the socket hole.

[0012] Further, annular wavy surfaces are respectively provided at the right end of the fifth gear, the left and right ends of the clutch member, and the left end of the first gear. The wavy surface of the clutch member can be engaged and fixed with or disengaged from the wavy surface of the fifth gear or the wavy surface of the first gear.

[0013] Further, the elastic member is a spring, and the elastic member is respectively sleeved on the outer circumferences of the wavy surfaces of the fifth gear and the clutch member. The elastic member is located on the left side of the retaining ring.

[0014] Further, a notch is provided at the right end of the drive shaft, a sliding hole is provided in the middle of the clutch member, and a convex block is provided on the inner wall of the sliding hole; the right end of the drive shaft extends into the sliding hole, and the limiting fit between the convex block and the notch can prevent the relative rotation of the drive shaft and the clutch member; the convex block can move left and right along the notch, so that the clutch member can move left and right on the drive shaft.

[0015] In summary, by applying the technical solution of the present invention, the following beneficial effects are achieved: The structure of the present invention is reasonably designed, and the working principle is as follows: When the rotation direction of the drive shaft remains unchanged, for example, the drive shaft always rotates forward, the drive route is as follows: First, the clutch member moves to the right on the drive shaft until the right end of the clutch member is engaged and fixed with the first gear. Then, the drive shaft drives the clutch member to rotate, and then the clutch member drives the first gear, the second gear, the third gear, the transmission shaft, the fourth gear, and the fifth gear to rotate in sequence. Finally, the opposite rotation of the first output shaft and the second output shaft and the idling of the fifth gear are realized; The drive route is as follows: First, the clutch member moves to the left on the drive shaft until the left end of the clutch member is engaged and fixed with the fifth gear. Then, the drive shaft drives the clutch member to rotate, and then the clutch member drives the fifth gear, the fourth gear, the transmission shaft, the third gear, the second gear, and the first gear to rotate in sequence. Finally, the reverse rotation of the first output shaft and the second output shaft is realized. From the above analysis, it can be seen that if the drive route of the present invention needs to be switched, it only needs to move the clutch member left and right on the drive shaft to realize the change of the rotation direction of the two output shafts from opposite rotation to reverse rotation under the condition that the rotation direction of the drive shaft remains unchanged, thus facilitating the work. Description of the Drawings

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 is Figure 1 the left-side partial enlarged view of

[0018] Figure 3 is a left-side partial three-dimensional structural schematic diagram of the present invention;

[0019] Figure 4 is a left-side partial three-dimensional structural schematic diagram of the present invention from another perspective;

[0020] Figure 5 is a three-dimensional structural schematic diagram of the present invention when the motor is cooperating with the clutch member;

[0021] Figure 6 is a three-dimensional structural schematic diagram of the clutch member of the present invention;

[0022] Figure 7 is a three-dimensional structural schematic diagram of the motor of the present invention;

[0023] Figure 8 It is a three-dimensional structural schematic diagram of the present utility model when the motor and the clutch part are removed;

[0024] Figure 9 It is a three-dimensional structural schematic diagram of the handle of the present utility model;

[0025] Figure 10 It is a three-dimensional structural schematic diagram of the present utility model when the handle and the elastic part are removed;

[0026] Explanation of reference numerals: 1 - fixing plate, 2 - first output shaft, 3 - second output shaft, 4 - transmission shaft, 5 - driving shaft, 6 - connecting plate, 7 - motor, 8 - elastic part, 9 - handle, 10 - wavy surface.

[0027] 101 - connecting rod, 102 - support platform, 103 - U-shaped groove; 201 - first gear, 301 - second gear, 401 - third gear, 402 - fourth gear, 501 - fifth gear; 502 - clutch part, 5021 - retaining ring, 5022 - sliding hole, 5023 - convex block, 503 - notch; 901 - socket hole, 902 - rotating rod. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model, but it does not constitute a limitation to the protection scope of the present utility model.

[0029] In the present utility model, for a clearer description, the following is stated: The observer faces the attached Figure 1 for observation. The left side of the observer is set as left, the right side of the observer is set as right, the front of the observer is set as front, the rear of the observer is set as rear, the upper side of the observer is set as upper, and the lower side of the observer is set as lower. It should be noted that the terms "front end", "rear end", "left side", "right side", "middle part", "upper side", "lower side", etc. in the text indicate the orientation or position relationship based on the orientation or position relationship set by the accompanying drawings, and are only for the purpose of clearly describing the present utility model, rather than indicating or implying that the structures or components referred to must have a specific orientation and be constructed in a specific orientation. Therefore, it cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third", "fourth" are only used for the purpose of clear or simplified description, and cannot be understood as indicating or implying relative importance or quantity.

[0030] See Figures 1 to 10, this embodiment provides a gear drive mechanism, including a fixed plate 1. On the fixed plate 1, a first output shaft 2, a second output shaft 3, and a transmission shaft 4 are rotatably arranged. The axial directions of the first output shaft 2, the second output shaft 3, and the transmission shaft 4 extend left and right. On the first output shaft 2 and the second output shaft 3, a first gear 201 and a second gear 301 are respectively fixedly arranged. On the right end and the left end of the transmission shaft 4, a third gear 401 and a fourth gear 402 are respectively fixedly arranged. The first gear 201 and the second gear 301 are meshed and driven, and the second gear 301 and the third gear 401 are meshed and driven. On the left side of the first output shaft 2, there is a drive shaft 5 with an axial direction extending left and right. On the left end of the drive shaft 5, a fifth gear 501 is rotatably arranged. On the right end of the drive shaft 5, there is a clutch member 502. The fourth gear 402 and the fifth gear 501 are meshed and driven, and the drive shaft 5 can drive the clutch member 502 to rotate. The clutch member 502 can move left and right on the drive shaft 5. The right end of the clutch member 502 can be engaged and fixed with the first gear 201 and disengaged, and the left end of the clutch member 502 can be engaged and fixed with the fifth gear 501 and disengaged. Working principle: When the rotation direction of the drive shaft remains unchanged, for example, the drive shaft always rotates forward. Drive route one: First, the clutch member moves to the right on the drive shaft until the right end of the clutch member is engaged and fixed with the first gear. Then, the drive shaft drives the clutch member to rotate. Then, the clutch member drives the first gear, the second gear, the third gear, the transmission shaft, the fourth gear, and the fifth gear to rotate in sequence. Finally, the opposite rotation of the first output shaft and the second output shaft and the idling of the fifth gear are realized. Drive route two: First, the clutch member moves to the left on the drive shaft until the left end of the clutch member is engaged and fixed with the fifth gear. Then, the drive shaft drives the clutch member to rotate. Then, the clutch member drives the fifth gear, the fourth gear, the transmission shaft, the third gear, the second gear, and the first gear to rotate in sequence. Finally, the opposite rotation of the first output shaft and the second output shaft is realized. From the above analysis, it can be seen that if the drive route needs to be switched in the present utility model, only by moving the clutch member left and right on the drive shaft, the two output shafts can be changed from rotating in opposite directions to rotating in the same direction under the condition that the rotation direction of the drive shaft remains unchanged, thus facilitating the work.

[0031] Specifically, the first gear 201 and the second gear 301 are located on the left side of the fixed plate 1. The left ends of the first output shaft 2 and the second output shaft 3 extend to the left side of the fixed plate 1, and the right ends of the first output shaft 2 and the second output shaft 3 extend to the right side of the fixed plate 1. The first gear 201 and the second gear 301 are respectively fixedly arranged at the left ends of the first output shaft 2 and the second output shaft 3. The third gear 401 and the fourth gear 402 are located on the left side of the fixed plate 1, and the right end of the transmission shaft 4 is rotatably matched with the fixed plate 1. Function: With such a setting, the cooperation between the gears is concentrated on the left side of the fixed plate, while the work of the first output shaft 2 and the second output shaft 3 appears on the right side of the fixed plate, avoiding mutual interference.

[0032] Specifically, a connecting plate 6 is provided on the right side of the fixed plate 1, and the right ends of the first output shaft 2 and the second output shaft 3 are rotationally engaged with the connecting plate 6; the first output shaft 2 and the second output shaft 3 are distributed front and back, and the transmission shaft 4 is located above the first output shaft 2 and the second output shaft 3. Function: Through the setting of the connecting plate, the first output shaft 2 and the second output shaft 3 have better working stability. In actual application, the first output shaft 2 and the second output shaft 3 can preferably be guide rollers, so that the paper can pass through between the two guide rollers, and through the rotational engagement of the two guide rollers (such as rotating in opposite directions or rotating in the same direction), the paper can be advanced or retracted. And this position distribution of the first output shaft 2, the second output shaft 3, and the transmission shaft 4 can facilitate the smooth meshing between the gears.

[0033] Specifically, a motor 7 is provided on the left side of the fixed plate 1, and the two side edges of the fixed plate 1 are respectively connected to the two side edges of the motor 7 through connecting rods 101; the fifth gear 501, the clutch member 502, and the first gear 201 are arranged in sequence from left to right between the motor 7 and the fixed plate 1. The left end of the drive shaft 5 passes through the fifth gear 501 and is connected to the motor 7, and the motor 7 can drive the drive shaft 5 to rotate. Function: The setting of the connecting rod 101 can better achieve the stable installation of the motor. And the motor 7 can provide continuous power for the rotation of the drive shaft 5.

[0034] Specifically, an elastic member 8 is provided between the right end of the fifth gear 501 and the left end of the clutch member 502. The elastic member 8 can drive the clutch member 502 to move to the right on the drive shaft 5, so that the right end of the clutch member 502 can be engaged and fixed with the first gear 201. Function: The setting of the elastic member 8 enables the clutch member 502 to maintain the engagement and fixation of the right end of the clutch member 502 with the first gear 201 under the elastic force of the elastic member 8. And when it is necessary to switch the drive route, it is necessary to overcome the elastic force of the elastic member 8.

[0035] Specifically, the left side wall of the fixed plate 1 is provided with two support platforms 102 extending to the left, and the two support platforms 102 are located at the front lower side and the rear lower side of the first gear 201; the two support platforms 102 are respectively rotatably matched with the front and rear side walls of the middle part of the handle 9, and the top of the handle 9 is provided with a socket hole 901, which is sleeved on the clutch 502 with a clearance fit, and the bottom end of the handle 9 extends downward and can be operated to be moved left and right. The handle 9 can drive the clutch 502 to move left on the drive shaft 5 so that the left end of the clutch 502 can be embedded and fixed with the fifth gear 501. Function: When the bottom end of the handle 9 is pushed to the upper right, the handle 9 will rotate around the two support platforms 102, and then the top end of the handle 9 will rotate to the lower left. Since the socket hole 901 is sleeved on the clutch 502 and the clearance fits, the top end of the handle 9 will drive the clutch 502 to move to the left on the drive shaft 5 during the rotation to the lower left, until the left end of the clutch 502 is engaged and fixed with the fifth gear 501; the rotation setting of the handle 9 can achieve labor saving through the lever action.

[0036] Specifically, the left ends of the two support platforms 102 are respectively provided with U-shaped grooves 103, and the front and rear side walls of the middle part of the handle 9 are respectively provided with rotating rods 902, and the two U-shaped grooves 103 are respectively rotatably matched with the two rotating rods 902; the clutch 502 is cylindrical and extends axially to the left and right, and the outer circumference of the clutch 502 is provided with a retaining ring 5021, and the sleeve hole 901 is a round hole, and the sleeve hole 901 is sleeved on the outer circumference of the clutch 502 with clearance, and the retaining ring 5021 is located on the left side of the sleeve hole 901. Function: The cooperation between the U-shaped groove 103 and the rotating rod 902 can realize a smoother rotation of the handle 9, and the U-shaped groove 103 is also more convenient to process. The setting of the retaining ring 5021 enables the edge of the sleeve hole 901 to push the retaining ring 5021 during the rotation of the handle 9 to drive the clutch 502 to move to the left on the drive shaft 5. The sleeve hole 901 is a round hole, which facilitates uniform clearance fit with the outer circumference of the clutch member 502.

[0037] Specifically, the right end of the fifth gear 501, the left and right ends of the clutch 502, and the left end of the first gear 201 are respectively provided with an annular wave surface 10, and the wave surface 10 of the clutch 502 can be engaged with and disengaged from the wave surface 10 of the fifth gear 501 or the wave surface 10 of the first gear 201. Function: The annular wave surface 10 makes it easier for the clutch 502 to be engaged with and disengaged from the first gear 201 and the fifth gear 501.

[0038] Specifically, the elastic member 8 is a spring, which is respectively sleeved on the outer circumference of the wave surface 10 of the fifth gear 501 and the clutch 502, and is located on the left side of the retaining ring 5021. Function: The spring provides a stable elastic force for the clutch 502.

[0039] Specifically, a notch 503 is provided at the right end of the drive shaft 5, a sliding hole 5022 is provided in the middle of the clutch member 502, and a convex block 5023 is provided on the inner wall of the sliding hole 5022; the right end of the drive shaft 5 extends into the sliding hole 5022, and the limiting fit between the convex block 5023 and the notch 503 can prevent the relative rotation between the drive shaft 5 and the clutch member 502; the convex block 5023 can move left and right along the notch 503, so that the clutch member 502 can move left and right on the drive shaft 5. Function: The limiting fit between the convex block 5023 and the notch 503 in the rotational direction can achieve the synchronous rotation of the clutch member 502 and the drive shaft 5. At the same time, the sliding fit between the convex block 5023 and the notch 503 in the left and right directions can achieve the left and right movement of the clutch member 502 on the drive shaft 5 as required.

[0040] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A gear drive mechanism, comprising a fixing plate (1), characterized in that: A first output shaft (2), a second output shaft (3) and a transmission shaft (4) are rotatably arranged on the fixed plate (1); the first output shaft (2), the second output shaft (3) and the transmission shaft (4) extend axially to the left and right; a first gear (201) and a second gear (301) are fixedly arranged on the first output shaft (2) and the second output shaft (3), respectively; a third gear (401) and a fourth gear (402) are fixedly arranged on the right end and the left end of the transmission shaft (4), respectively; the first gear (201) and the second gear (301) are meshed for transmission, and the second gear (301) and the third gear (401) are meshed for transmission; A drive shaft (5) extending axially leftward and rightward is provided on the left side of an output shaft (2); a fifth gear (501) is rotatably provided on the left end of the drive shaft (5); a clutch (502) is provided on the right end of the drive shaft (5); the fourth gear (402) is meshed with the fifth gear (501) for transmission; the drive shaft (5) can drive the clutch (502) to rotate; the clutch (502) can move leftward and rightward on the drive shaft (5); the right end of the clutch (502) can be engaged with and fixed to the first gear (201) and can be disengaged; and the left end of the clutch (502) can be engaged with and fixed to the fifth gear (501) and can be disengaged.

2. A gear drive mechanism according to claim 1, characterized in that: The first gear (201) and the second gear (301) are located on the left side of the fixed plate (1); the left ends of the first output shaft (2) and the second output shaft (3) extend to the left side of the fixed plate (1); the right ends of the first output shaft (2) and the second output shaft (3) extend to the right side of the fixed plate (1); the first gear (201) and the second gear (301) are fixedly arranged on the left ends of the first output shaft (2) and the second output shaft (3), respectively; the third gear (401) and the fourth gear (402) are located on the left side of the fixed plate (1); and the right end of the transmission shaft (4) is rotatably matched with the fixed plate (1).

3. A gear drive mechanism according to claim 2, characterized in that: A connecting plate (6) is provided on the right side of the fixing plate (1), and the right ends of the first output shaft (2) and the second output shaft (3) are rotatably matched with the connecting plate (6); the first output shaft (2) and the second output shaft (3) are distributed in the front and rear direction, and the transmission shaft (4) is located above the first output shaft (2) and the second output shaft (3).

4. A gear drive mechanism according to claim 2, characterized in that: A motor (7) is provided on the left side of the fixed plate (1), and the two side edges of the fixed plate (1) are respectively connected to the two side edges of the motor (7) via connecting rods (101); the fifth gear (501), the clutch member (502), and the first gear (201) are arranged in sequence from left to right between the motor (7) and the fixed plate (1); the left end of the drive shaft (5) passes through the fifth gear (501) and is connected to the motor (7); and the motor (7) can drive the drive shaft (5) to rotate.

5. A gear drive mechanism according to any one of claims 1 to 4, characterized in that: An elastic member (8) is provided between the right end of the fifth gear (501) and the left end of the clutch member (502), and the elastic member (8) can drive the clutch member (502) to move rightward on the drive shaft (5), so that the right end of the clutch member (502) can be engaged and fixed with the first gear (201).

6. A gear drive mechanism according to claim 5, characterized in that: The left side wall of the fixing plate (1) is provided with two support platforms (102) extending to the left, and the two support platforms (102) are located at the front lower side and the rear lower side of the first gear (201); the two support platforms (102) are respectively rotatably matched with the front and rear side walls of the middle part of the handle (9), and the top end of the handle (9) is provided with a sleeve hole (901), and the sleeve hole (901) is sleeved on the clutch (502) and is loosely matched, and the bottom end of the handle (9) extends downward and can be operated to be moved left and right, and the handle (9) can drive the clutch (502) to move leftward on the driving shaft (5), so that the left end of the clutch (502) can be engaged and fixed with the fifth gear (501).

7. A gear drive mechanism according to claim 6, characterized in that: The left ends of the two support platforms (102) are respectively provided with U-shaped grooves (103), and the front and rear side walls of the middle part of the handle (9) are respectively provided with rotating rods (902), and the two U-shaped grooves (103) are respectively rotatably matched with the two rotating rods (902); the clutch (502) is in the shape of a cylinder extending axially to the left and right, and a retaining ring (5021) is provided on the outer circumference of the clutch (502), and the sleeve hole (901) is a circular hole, and the sleeve hole (901) is sleeved on the outer circumference of the clutch (502) with clearance fit, and the retaining ring (5021) is located on the left side of the sleeve hole (901).

8. A gear drive mechanism according to claim 7, characterized in that: The right end of the fifth gear (501), the left and right ends of the clutch (502), and the left end of the first gear (201) are respectively provided with annular wave surfaces (10); the wave surface (10) of the clutch (502) can be engaged and fixed with the wave surface (10) of the fifth gear (501) or the wave surface (10) of the first gear (201), and can be disengaged.

9. A gear drive mechanism according to claim 8, characterized in that: The elastic member (8) is a spring. The elastic member (8) is respectively sleeved on the outer circumference of the fifth gear (501) and the wave surface (10) of the clutch member (502). The elastic member (8) is located on the left side of the retaining ring (5021).

10. A gear drive mechanism according to any one of claims 1 to 4 and 6 to 9, characterized in that: The right end of the driving shaft (5) is provided with a notch (503), the middle part of the clutch (502) is provided with a sliding hole (5022), and the inner wall of the sliding hole (5022) is provided with a protrusion (5023); the right end of the driving shaft (5) extends into the sliding hole (5022), and the limiting cooperation between the protrusion (5023) and the notch (503) can prevent the driving shaft (5) and the clutch (502) from rotating relative to each other; the protrusion (5023) can move left and right along the notch (503), so that the clutch (502) can move left and right on the driving shaft (5).

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