An overload limiting device includes: a rolling element; a rotatable first rotation member having a housing portion that houses the rolling element; a rotatable second rotation member having an engagement recess portion that engages detachably with the rolling element housed in the housing portion, the second rotation member being arranged opposing the first rotation member; a biasing member that biases the rolling element toward the engagement recess portion; and an adjustment nut that adjusts a biasing force of the biasing member by moving in a rotation axis direction of the first rotation member, the adjustment nut being provided to the first rotation member, the first rotation member including a scale showing a position of the adjustment nut in the rotation axis direction.

The present disclosure discloses a vibration damping TBM torque limiting clutch, including a driving end and a driven end which are axially sleeved. A fixed torque fastener is arranged between the driving end and the driven end; an inner spline hole of the driving end is axially sleeved to a motor hollow spline shaft; the tail part of the driven end is axially connected with a high-vibration damping rubber ring; and the rubber ring is wrapped outside of an inner spline hub; the rubber ring and the inner spline hub are fixed by a fastener; a reducer spline shaft is inserted into the inner spline hub after penetrating through the motor hollow spline shaft, and then is connected to the spline of the inner spline hub. The design mainly reduces the overload disengaged rate to an extremely large extent by means of shielding instantaneous torque pulses, and well resolve the defects in the existing technology.

The present disclosure discloses a vibration damping TBM torque limiting clutch, including a driving end and a driven end which are axially sleeved. A fixed torque fastener is arranged between the driving end and the driven end; an inner spline hole of the driving end is axially sleeved to a motor hollow spline shaft; the tail part of the driven end is axially connected with a high-vibration damping rubber ring; and the rubber ring is wrapped outside of an inner spline hub; the rubber ring and the inner spline hub are fixed by a fastener; a reducer spline shaft is inserted into the inner spline hub after penetrating through the motor hollow spline shaft, and then is connected to the spline of the inner spline hub. The design mainly reduces the overload disengaged rate to an extremely large extent by means of shielding instantaneous torque pulses, and well resolve the defects in the existing technology.

This application describes clutch mechanisms for use in a steering control system, e.g., a steering control system used to steer a trolling motor for a boat. Such clutch mechanisms can reduce and avoid damage to the steering control system (e.g., a steering motor) when the system is subjected to unusually large impact loads (e.g., when the trolling motor or boat contacts an obstruction). The clutches described in this application can be used to decouple the steering control system from a steering shaft (or other drive mechanism) upon application of a large impact load, thus reducing damage to and increasing the lifespan of such system. In some cases, the clutch is a ball and spring mechanism. In other cases, the clutch is a slip tooth mechanism.

This application describes clutch mechanisms for use in a steering control system, e.g., a steering control system used to steer a trolling motor for a boat. Such clutch mechanisms can reduce and avoid damage to the steering control system (e.g., a steering motor) when the system is subjected to unusually large impact loads (e.g., when the trolling motor or boat contacts an obstruction). The clutches described in this application can be used to decouple the steering control system from a steering shaft (or other drive mechanism) upon application of a large impact load, thus reducing damage to and increasing the lifespan of such system. In some cases, the clutch is a ball and spring mechanism. In other cases, the clutch is a slip tooth mechanism.

A power transmission device has a clutch member, a pressure member 5, a weight member 8, an interlocking member 9 and a bearing holding member C coupled to an activation member 10. The bearing holder member C holds a bearing B1 interposed between the activation member 10 and the pressure member 5. The bearing holding member C has a cylindrical member with one open end. An open end portion Ca is fit into and attached to a recessed portion 4d formed in a first clutch member 4a.

A power transmission device has a clutch member, a pressure member 5, a weight member 8, an interlocking member 9 and a bearing holding member C coupled to an activation member 10. The bearing holder member C holds a bearing B1 interposed between the activation member 10 and the pressure member 5. The bearing holding member C has a cylindrical member with one open end. An open end portion Ca is fit into and attached to a recessed portion 4d formed in a first clutch member 4a.

A clutch of a clutch device is provided between a first transmission portion and a second transmission portion that are rotatable relative to a housing. A state changing unit is configured to receive a force in an axial direction from a translation portion and change a state of the clutch to an engaged state or a non-engaged state according to a relative position in the axial direction of the translation portion with respect to the housing. An urging member is configured to urge the translation portion in a direction to switch the clutch from the engaged state to the non-engaged state. A retainer member is fixed directly to the housing and is configured to restrict an axial position of the urging member.

A clutch comprising a hub and a cam connected to the hub, said cam comprising a ring-shaped part having grooves formed on a bottom surface of the ring-shaped part; a spring plate having recesses formed on a top surface of the spring plate; an output flange and a part of a roller bearing connected to each other, said output flange comprising a ring-shaped part configured to accommodate the spring plate, a plurality of transmission elements arranged in an angular direction between the spring plate and the cam; a plurality of springs arranged in the angular direction between the spring plate and the output flange; and a sliding bearing provided at an interface between the hub and the output flange, wherein the clutch is configured to be changed between first and second states. A high-speed industrial robot capable of moving on a plurality of axes, and use thereof.

A clutch comprising a hub and a cam connected to the hub, said cam comprising a ring-shaped part having grooves formed on a bottom surface of the ring-shaped part; a spring plate having recesses formed on a top surface of the spring plate; an output flange and a part of a roller bearing connected to each other, said output flange comprising a ring-shaped part configured to accommodate the spring plate, a plurality of transmission elements arranged in an angular direction between the spring plate and the cam; a plurality of springs arranged in the angular direction between the spring plate and the output flange; and a sliding bearing provided at an interface between the hub and the output flange, wherein the clutch is configured to be changed between first and second states. A high-speed industrial robot capable of moving on a plurality of axes, and use thereof.