electromagnetic actuator
A technology of electromagnetic actuators and yokes, applied in circuits, magnets, magnetic objects, etc., can solve problems such as inability to ensure strength and insufficient quality
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no. 1 example
[0035] An electromagnetic actuator according to a first embodiment of the present disclosure will be described with reference to the drawings. In the following description, structures similar to those of the first embodiment are denoted by the same reference numerals, and for the sake of simplicity, redundant description thereof will not be given. For example, electromagnetic actuators are used in valve lift devices. Similar to the valve lift adjustment device disclosed in JP2013-217265A, the valve lift adjustment device adjusts the respective lift amounts of the intake valve or the exhaust valve of the internal combustion engine through one of the cams, the cam and the slider are integrally formed, Driven integrally by the camshaft.
[0036] will refer to figure 1 and 2 The structure and operation of the valve lift adjusting device of this embodiment will be described.
[0037] Such as figure 1 and 2 As shown, the valve lift adjusting device 50 includes a sliding member...
no. 2 example
[0112] The second embodiment is similar to the first embodiment except that non-magnetic components are installed at the first gap and the second gap, respectively.
[0113] Specifically, as Figure 8A and 8B As shown, in the electromagnetic actuator 102 of the second embodiment, the nonmagnetic member 123 is arranged in the first gap 121 , and the nonmagnetic member 124 is arranged in the second gap 122 . exist Figure 8A Among them, the non-magnetic component 123 and the non-magnetic component 124 are defined by the imaginary plane Is1, that is, they are divided by the imaginary plane Is1. The imaginary plane Is1 indicates the boundary surface between the non-magnetic member 123 and the non-magnetic member 124 .
[0114] The non-magnetic member 123 and the non-magnetic member 124 are shaped like a tube and made of a non-magnetic material such as austenitic stainless steel. In this embodiment, the non-magnetic part 123 and the non-magnetic part 124 are integrally formed a...
no. 3 example
[0119] The third embodiment is similar to the first embodiment except that a non-magnetic retainer is installed in the third gap and a non-magnetic retainer is respectively installed at a position between the rear plate and the yoke, and at a position between the permanent magnet and the yoke. Example.
[0120] Specifically, such as Figure 9A and 9B As shown, in the electromagnetic actuator 103 of the third embodiment, the non-magnetic holder 231 is installed between the outer peripheral surface 453 of the front plate 45 and the inner peripheral surface 351 of the yoke 35 . The non-magnetic holder 232 is installed between the outer peripheral surface 403 of the permanent magnet 40 and the inner peripheral surface 351 of the yoke 35 . The nonmagnetic holder 233 is installed between the outer peripheral surface 442 of the rear plate 44 and the inner peripheral surface 351 of the yoke 35 .
[0121] The non-magnetic holders 231-233 are made of a non-magnetic material such as a...
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