Quick clutch structure for non-road vehicle

Abstract

A quick clutch structure for a non-road vehicle is characterized in that a clutch knob is rotationally connected to a speed reducer shell, a clutch pull rod is located between the clutch knob and a power shaft, and a first-stage sun wheel is movably arranged on the clutch pull rod in a sleeving mode and used for driving a first-stage planetary speed reducing mechanism to work; a spiral through groove is formed in the periphery of the clutch knob in the axial direction. The first end of the clutch pull rod extends into the clutch knob, the first end of the clutch pull rod is connected with a guide piece in the radial direction, the first end of the clutch pull rod is fixedly sleeved with the guide seat, and the guide seat is located in the clutch knob; a guide groove in the axial direction of the power shaft is formed in the guide seat, a guide piece is connected to the first end of the clutch pull rod in the radial direction, and the guide piece extends into the spiral through groove from the guide groove; and the clutch knob is used for converting the rotational motion of the clutch knob into the linear motion of the clutch pull rod. The clutch structure is arranged between the speed reducer and the motor, so that rapid separation and reunion of the motor and the speed reducer can be realized.

Description

Technical Field

[0001] The utility model relates to the field of off-road vehicles, in particular to a quick clutch structure for off-road vehicles. Background Art

[0002] The driving part of a traditional off-road vehicle is composed of a motor, an electromagnetic brake, and a single-stage or multi-stage planetary reducer. The motor and the planetary reducer are connected by a spline, and the overall working state is divided into a first state in which the brake is powered and a second state in which the brake is de-powered. In the first state, the brake fails after being powered, and the motor can transmit power to the planetary reducer to drive the vehicle. In the second state, the brake loses power, the brake takes effect, and the motor cannot transmit power, so the vehicle cannot move.

[0003] When the vehicle is in a power-off or power-off state, due to the existence of the reducer, no matter in the first state or the second state, the motor and the reducer cannot be quickly and effectively separated, so the vehicle cannot be easily moved. If movement is required, the brake needs to be released manually, but this method makes movement quite laborious due to the inherent characteristics of the reducer. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model proposes a fast clutch structure for off-road vehicles, and the specific technical solution is as follows:

[0005] A fast clutch structure for off-road vehicles, comprising a power shaft, a reducer housing, and a primary sun gear, characterized in that:

[0006] It also includes a clutch pull rod, a clutch gear, a clutch knob, a guide seat and a guide member;

[0007] The clutch knob is rotatably connected to the reducer housing, the clutch pull rod is located between the clutch knob and the power shaft, the primary sun gear is loosely sleeved on the clutch pull rod, and the primary sun gear is used to drive the primary planetary reduction mechanism to work;

[0008] The clutch knob is a hollow structure, and a spiral through groove is axially provided on the outer circumference of the clutch knob;

[0009] The first end of the clutch pull rod extends into the clutch knob, the first end of the clutch pull rod is radially connected to a guide member, the guide seat is fixedly sleeved on the first end of the clutch pull rod, and the guide seat is located in the clutch knob;

[0010] The guide seat is provided with a guide groove which is consistent with the axial direction of the power shaft, and a guide piece is radially connected to the first end of the clutch pull rod, and the guide piece extends from the guide groove into the spiral through groove;

[0011] The clutch knob is used to convert its own rotational motion into linear motion of the clutch pull rod;

[0012] The second end of the clutch pull rod is fixedly connected to a clutch gear, the free end of the motor main shaft is provided with internal teeth meshing with the clutch gear, and the clutch pull rod can drive the clutch gear to slide along the axial direction;

[0013] The end surface of the clutch gear facing the primary sun gear is provided with a first latching tooth / slot, and the end surface of the primary sun gear facing the clutch gear is provided with a second latching slot / tooth that matches the first latching tooth / slot in a concave-convex manner.

[0014] In order to better implement the utility model, it can be further provided that: a knob seat is fixedly connected to the reducer housing, the clutch knob is rotatably connected in the knob seat, and the clutch knob can rotate relative to the knob seat.

[0015] Furthermore, a through hole is radially formed at the first end of the clutch pull rod, and the guide member is inserted into the through hole.

[0016] Furthermore: the guide member adopts a floating pin.

[0017] The beneficial effect of the utility model is that by setting a clutch structure between the reducer and the motor, the motor and the reducer can be quickly separated and engaged. When in the first clutch state, the clutch gear and the primary sun gear are matched with each other, the motor drives the clutch gear to rotate through the power shaft, the clutch gear drives the primary sun gear to rotate synchronously, and the power is transmitted to the reduction mechanism through the primary sun gear. When the first clutch state is changed to the second clutch state, the rotational movement of the clutch knob is converted into the axial sliding of the guide member, the clutch knob is rotated, and the spiral groove moves relative to the guide member, so that the guide member drives the clutch pull rod to move linearly toward the power shaft direction, and the clutch pull rod drives the clutch gear to quickly disengage from the primary sun gear, so as to realize the rapid separation of the power shaft and the reducer. Since the clutch knob of this structure is designed on the outside of the reducer, it is simpler and faster than the traditional method of releasing the brake handle at the bottom of the vehicle. And this structure is reliable in separation and engagement, and after the motor and the reducer are separated, only a small force needs to be applied to the output shaft end of the reducer to realize the free movement of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the overall structure diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the connection between the motor and the reducer of the utility model;

[0020] Figure 3 It is a schematic diagram of the connection between the clutch lever, clutch gear and clutch knob;

[0021] Figure 4 It is a schematic diagram of the connection between the clutch rod, the clutch gear, the guide seat and the guide member;

[0022] Figure 5 It is a schematic diagram of the guide seat structure;

[0023] Figure 6 It is a schematic diagram of the clutch knob structure;

[0024] The accompanying drawings in the figure illustrate the reducer housing 1, the knob seat 2, the clutch knob 3, the power shaft 4, the clutch pull rod 5, the clutch gear 6, the primary sun gear 7, the spiral through groove 8, the guide seat 9, the guide groove 10, the guide member 11, and the primary reduction mechanism 12. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions 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. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present utility model, it should be noted that the terms "vertical", "upper", "lower", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present utility model. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] like Figures 1 to 6 As shown:

[0028] A quick clutch mechanism is used to achieve quick clutch between a reducer and a power shaft 4.

[0029] The quick clutch mechanism comprises a clutch pull rod 5 , a clutch gear 6 , a primary sun gear 7 , a clutch knob 3 , a knob seat 2 and a guide seat 9 .

[0030] The knob seat 2 is fixedly connected to the left side of the reducer housing 1, and the clutch knob 3 is rotatably connected in the knob seat 2. The clutch knob 3 can rotate relative to the knob seat 2. The clutch knob 3 is a cylindrical structure, and a spiral through groove 8 is axially opened on the outer periphery of the clutch knob 3.

[0031] The clutch rod 5 is located in the reducer housing 1, the clutch knob 3, the clutch rod 5 and the power shaft 4 are coaxially arranged, and the clutch rod 5 is located between the clutch knob 3 and the power shaft 4. The first end of the clutch rod 5 extends into the clutch knob 3, and a guide seat 9 is fixedly sleeved on the first end of the clutch rod 5. The guide seat 9 is located in the clutch knob 3, and a guide groove 10 along the axial direction of the power shaft 4 is opened on the guide seat 9. A guide member 11 is radially connected to the first end of the clutch rod 5, and the guide member 11 extends from the guide groove 10 into the spiral through groove 8. The guide groove 10 is used to prevent the guide member 11 from rotating, and specifically, the guide member 11 is a floating pin.

[0032] The second end of the clutch rod 5 is fixedly connected to a clutch gear 6. A connecting hole is provided at the free end of the power shaft 4. Internal teeth are provided in the connecting hole. The clutch gear 6 is inserted into the connecting hole of the power shaft 4. The clutch gear 6 is always meshed with the power shaft 4. Specifically, the clutch gear 6 is always meshed with the motor main shaft through a spline. The clutch gear 6 can slide along the axial direction of the motor main shaft.

[0033] The end surface of the clutch gear 6 facing the clutch knob 3 is provided with a first latching tooth / slot, and the end surface of the primary sun gear 7 facing the clutch gear 6 is provided with a second latching groove / tooth that matches the first latching tooth in a concave-convex manner.

[0034] The working process of this utility model is described as follows:

[0035] In the first clutch state, the clutch gear 6 and the primary sun gear 7 are matched in a concave-convex manner, the motor is working, the power shaft 4 of the motor drives the clutch gear 6 to rotate, the clutch gear 6 drives the primary sun gear 7 to rotate synchronously, and the power of the motor is transmitted to the reduction mechanism through the primary sun gear 7.

[0036] In the second clutch state, the clutch gear 6 is separated from the primary sun gear 7 .

[0037] When switching from the first clutch state to the second clutch state, by rotating the clutch knob 3, the spiral groove 8 moves relative to the guide member 11. Since the guide member 11 is located in the guide groove 10 of the guide seat 9, the guide member 11 drives the clutch rod 5 to move linearly toward the direction of the power shaft 4, so that the clutch gear 6 and the first-stage sun gear 7 are quickly disengaged, thereby realizing rapid clutch of the motor and the reducer.

[0038] When changing from the second clutch state to the first clutch state, by rotating the clutch knob 3 in the opposite direction, the spiral groove 8 moves relative to the guide member 11. Since the guide member 11 is located in the guide groove 10 of the guide seat 9, the guide member 11 drives the clutch rod 5 to move linearly toward the direction of the clutch knob 3. The clutch gear 6 and the first-stage sun gear 7 are matched in a concave-convex manner, and the motor can drive the first-stage sun gear 7 to rotate through the clutch gear 6.

[0039] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A quick clutch structure for an off-road vehicle, comprising a power shaft, a reducer housing, and a primary sun gear, characterized in that: It also includes a clutch pull rod, a clutch gear, a clutch knob, a guide seat and a guide member; The clutch knob is rotatably connected to the reducer housing, the clutch pull rod is located between the clutch knob and the power shaft, the primary sun gear is loosely sleeved on the clutch pull rod, and the primary sun gear is used to drive the primary planetary reduction mechanism to work; The clutch knob is a hollow structure, and a spiral through groove is axially provided on the outer circumference of the clutch knob; The first end of the clutch pull rod extends into the clutch knob, the first end of the clutch pull rod is radially connected to a guide member, the guide seat is fixedly sleeved on the first end of the clutch pull rod, and the guide seat is located in the clutch knob; The guide seat is provided with a guide groove which is consistent with the axial direction of the power shaft, and a guide piece is radially connected to the first end of the clutch pull rod, and the guide piece extends from the guide groove into the spiral through groove; The clutch knob is used to convert its own rotational motion into linear motion of the clutch pull rod; The second end of the clutch pull rod is fixedly connected to a clutch gear, the free end of the motor main shaft is provided with internal teeth meshing with the clutch gear, and the clutch pull rod can drive the clutch gear to slide along the axial direction; The end surface of the clutch gear facing the primary sun gear is provided with a first latching tooth / slot, and the end surface of the primary sun gear facing the clutch gear is provided with a second latching slot / tooth that matches the first latching tooth / slot in a concave-convex manner.

2. A quick clutch structure for an off-road vehicle according to claim 1, characterized in that: A knob seat is fixedly connected to the reducer housing, the clutch knob is rotatably connected in the knob seat, and the clutch knob can rotate relative to the knob seat.

3. A quick clutch structure for an off-road vehicle according to claim 2, characterized in that: A through hole is radially formed at the first end of the clutch pull rod, and the guide member is inserted into the through hole.

4. A quick clutch structure for an off-road vehicle according to claim 3, characterized in that: The guide member adopts a floating pin.

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