33results about How to "Does not lead to large" patented technology

A back massage device capable of causing a massage mechanism to protrude forward and returning the massage mechanism to the original position, wherein the back massage device is configured so that the massage effect does not deteriorate, the massage mechanism can be moved forward and backward a sufficient amount, and the back massage device is not mechanically large and complex. A back massage device (4) provided to a chair type massage machine (1) is provided with: a massage mechanism (10) having a pair of left and right massage members (17); a base member (12) for pivotably supporting the mechanisms (10) at the lower end side thereof; a vertical movement mechanism (13) for vertically moving the base member (12); an extension/retraction operation mechanism (14) for driving and rocking the massage mechanism (10); and a rocking limiting mechanism (15) for limiting the pivoting angle of the massage mechanism (10) so that, at a raised position, the upper ends of the massage members (17) protrude forward and, at a lowered position, the lower ends of the massage members protrude forward.

A rotation angle detector for detecting a rotation angle of a detectable rotation body, comprises: a primary rotation body to be attached to the detectable rotation body and to rotate as integral with the detectable rotation body; a secondary rotation body to rotate as a predetermined rotation ratio for the primary rotation body; a primary rotation detection mechanism to output a signal to be varied periodically as corresponding to a rotation of the primary rotation body; a secondary rotation detection mechanism to output a signal to be varied periodically as corresponding to a rotation of the secondary rotation body; a signal processing unit to calculate the rotation angles of the primary and the secondary rotation bodies using the signals that the primary and the secondary rotation detection mechanisms output; and an operation processing unit to calculate the rotation angle of the detectable rotation body, based on the calculated rotation angle of the primary or of the secondary rotation body, and on a relative rotation angle between the primary and the secondary rotation body, wherein at least any one of the following signals (A) to (D) is designed to have a cycle as different from one cycle for one rotation of the primary rotation body or of the secondary rotation body; (A) an output signal of the primary rotation detection mechanism; (B) an output signal of the secondary rotation detection mechanism; (C) an input signal from the primary rotation detection mechanism to be processed at the signal processing unit; and (D) an input signal from the secondary rotation detection mechanism to be processed at the signal processing unit.

The invention discloses a connector which can prevent a detection component from moving freely on the basis of avoiding large size and complexity of a housing. The detection component (40) can be assembled to the housing (10) in the manner of moving between an initial position and a detection position. The detection component is bent and deformed in the process of moving from the initial position to the detection position, and elastically reset in the detection position and maintain the state that the return movement to the initial position with respect to a locking arm (21) is limited. A retainer (80) is installed on the housing. A limiting part (86) is disposed on the retainer. In a state of being correctly installed to the housing, the limiting part (86) is configured in a position corresponding to a retreat part (46) of the detection component in the process when the detection component moves to the detection position from the initial position so as to allow bending of the detection component, and is configured in a position to be withdrawn from the retreat part when the detection component arrives the detection position so as to limit the bending of the detection component.

A lubricating oil supply system for an infinitely variable transmission wherein the infinitely variable transmission has a transmission shaft provided with a lubricating oil path and is rotatably mounted through the wall section of a casing. The infinitely variable transmission is housed in a transmission case partly defined by the wall section. An input rotary member is provided that is relatively unrotatably connected to the transmission shaft on the outside of the transmission case. An oil pump is provided for supplying lubricating oil to the lubricating oil path. The oil pump is located in the casing. In this infinitely variable transmission, the oil passage from the oil pump to the lubricated portion of the infinitely variable transmission is simplified in structure and the oil passage is substantially reduced in length, thereby enabling a decrease in the length of the transmission shaft.

A housing (23)-side first key (54) of an Oldham ring (50) protrudes from a ring section (53) toward the housing (23) and also radially toward the inside of the ring section (53). The flange of the housing (23) has formed thereon: a facing section (71) having a movable scroll facing surface (70); and an annular opening (72) located around the movable scroll facing surface (70) and accommodating thering section (53). A first key groove (61) is formed on the rear surface side of the facing section (71) so as to extend radially inward from the annular opening (72). The configuration ensures the strength of the housing (23) and Oldham ring (50) of the scroll compressor and prevents the movable scroll facing section (70) from becoming small.

The purpose of the present invention is to provide a power convertor capable of highly accurate control based on a current in each phase by extending the detection period of the current in each phase without increasing the size of a device and incurring high cost. The power convertor comprises: a power source shunt resister (5) provided in between the negative voltage side of a DC power source (1) and an inverter (2); and per-phase lower-arm shunt resistors (6a, 6b) respectively provided in between two of three per-phase lower-arm switching elements (3d, 3e) and the power source shunt resister (5). The power convertor detects the voltages between the connection points for the per-phase lower-arm switching elements (3d, 3e) and per-phase lower-arm shunt resistors (6a, 6b), and the negative voltage side of the DC power source (1), and calculates the per-phase current flowing in a load device (9) on the basis of each detected value.

A switch unit is provided which is free from causing contact damage even in case applied to a high power voltage, whose switch unit is not greatly increased in size. Switches A and B are to take a motor stop status, a motor forward rotation status and a motor reverse rotation status. A switch C is to electrically connecting and disconnecting between the switches A and B and the power source. This switch C, when the switches A and B transits from the motor forward rotation status or motor reverse rotation status into the motor stop status, is operated from a connection state to a disconnection state at a time of any of completing the transition to the motor stop status and prior to a predetermined marginal period of time.