BELT TYPE CONTINUOUSLY VARIABLE TRANSMISSION DEVICE
First Claim
1. A belt type continuously variable transmission device comprising:
- a one-side pulley;
an other-side pulley;
a belt wound around the one-side pulley and the other-side pulley; and
an actuator,the one-side pulley including a moveable sheave member placed to be moveable relatively in an axial direction with respect to a fixed sheave fixed on a rotational shaft and that pinches the belt between the moveable sheave member and the fixed sheave, andthe actuator moving the moveable sheave member in the axial direction, whereinthe actuator comprises;
a moveable feed member having an inner tube section supported to be rotatable around a center of the rotational shaft on a radially outer side of the moveable sheave member and in which a moveable-side feed screw is provided, an outer tube section placed around the inner tube section and in which an outer gear is provided on a radially outer side, and a lid section that connects the inner tube section and the outer tube section;
a gear case having a fixed tube section in which a fixed-side feed screw that screw-engages the moveable-side feed screw is provided, and an outer cover integrally provided on the fixed tube section, in which an opening into which the outer tube section is inserted is formed, and that houses the outer gear; and
an electric motor that drives a motor-side gear that intermeshes with the outer gear, andthe opening proximately opposes an outer circumferential surface on the side of the one-side pulley in relation to the outer gear on the outer tube section, in relation to the axial direction of the rotational shaft.
1 Assignment
0 Petitions
Accused Products
Abstract
A belt type continuously variable transmission device includes an actuator that moves a moveable sheave member of a drive pulley which is a one-side pulley in an axial direction. The actuator includes a moveable feed member, a gear case, and an electric motor. The moveable feed member includes an inner tube section in which a moveable-side feed screw is provided, an outer tube section in which an outer gear is provided, and a lid section. The gear case has a fixed tube section in which a fixed-side feed screw is provided, and an outer cover. The electric motor drives a motor-side gear that intermeshes with the outer gear. The outer cover has an opening into which the outer tube section is inserted and that proximately opposes an outer circumferential surface of the outer tube section.
-
Citations
15 Claims
-
1. A belt type continuously variable transmission device comprising:
-
a one-side pulley; an other-side pulley; a belt wound around the one-side pulley and the other-side pulley; and an actuator, the one-side pulley including a moveable sheave member placed to be moveable relatively in an axial direction with respect to a fixed sheave fixed on a rotational shaft and that pinches the belt between the moveable sheave member and the fixed sheave, and the actuator moving the moveable sheave member in the axial direction, wherein the actuator comprises; a moveable feed member having an inner tube section supported to be rotatable around a center of the rotational shaft on a radially outer side of the moveable sheave member and in which a moveable-side feed screw is provided, an outer tube section placed around the inner tube section and in which an outer gear is provided on a radially outer side, and a lid section that connects the inner tube section and the outer tube section; a gear case having a fixed tube section in which a fixed-side feed screw that screw-engages the moveable-side feed screw is provided, and an outer cover integrally provided on the fixed tube section, in which an opening into which the outer tube section is inserted is formed, and that houses the outer gear; and an electric motor that drives a motor-side gear that intermeshes with the outer gear, and the opening proximately opposes an outer circumferential surface on the side of the one-side pulley in relation to the outer gear on the outer tube section, in relation to the axial direction of the rotational shaft. - View Dependent Claims (4, 5, 6, 7, 8, 9)
-
-
2. A belt type continuously variable transmission device, comprising:
-
a one-side pulley; an other-side pulley; a belt wound around the one-side pulley and the other-side pulley; and an actuator, the one-side pulley including a moveable sheave member placed to be moveable relatively in an axial direction with respect to a fixed sheave fixed on a rotational shaft and that pinches the belt between the moveable sheave member and the fixed sheave, and the actuator moving the moveable sheave member in the axial direction, wherein the actuator comprises; a moveable feed member having an inner tube section supported to be rotatable around a center of the rotational shaft on a radially outer side of the moveable sheave member and in which a moveable-side feed screw is provided, an outer tube section placed around the inner tube section and in which an outer gear is provided on a radially outer side, and a lid section that connects the inner tube section and the outer tube section; a gear case having a fixed tube section in which a fixed-side feed screw that screw-engages the moveable-side feed screw is provided, and an outer cover integrally provided on the fixed tube section, the gear case being provided in the side of the moveable feed member in relation to the belt in the axial direction of the rotational shaft; and an electric motor having a motor case fixed on the gear case and that drives a motor-side gear that intermeshes with the outer gear, and the outer cover houses the outer gear. - View Dependent Claims (3)
-
-
10. A belt type continuously variable transmission device comprising:
-
a one-side pulley; an other-side pulley; a belt wound around the one-side pulley and the other-side pulley; and an actuator, the one-side pulley including a moveable sheave member placed to be moveable relatively in an axial direction with respect to a fixed sheave fixed on a rotational shaft and that pinches the belt between the moveable sheave member and the fixed sheave, and the actuator moving the moveable sheave member in the axial direction, wherein the moveable sheave member comprises a moveable tube section provided on a side opposite to a belt engagement surface that engages with the belt, in an axial direction, the actuator comprises a moveable feed screw member which is supported in a manner to be rotatable around a center of a rotational shaft via a bearing on an outer circumferential side of the moveable tube section in a state where movement in the axial direction with respect to the moveable sheave member is blocked, and which has a moveable-side feed screw, an electric motor which rotationally drives the moveable feed screw member, and a case having a fixed-side feed screw which screw-engages the moveable-side feed screw, and at least a part of the moveable-side feed screw is at a position different from the bearing in the axial direction and at the same position as the bearing in a radial direction of the rotational shaft. - View Dependent Claims (11, 12, 13, 14)
-
-
15. A belt type continuously variable transmission device comprising:
-
a one-side pulley; an other-side pulley; a belt wound around the one-side pulley and the other-side pulley; and an actuator, the one-side pulley including a moveable sheave member placed to be moveable relatively in an axial direction with respect to a fixed sheave fixed on a rotational shaft and that pinches the belt between the moveable sheave member and the fixed sheave, and the actuator moving the moveable sheave member in the axial direction, wherein the moveable sheave member comprises a moveable sheave body having a belt engagement surface which engages with the belt, and a moveable tube section provided on a side opposite to the belt engagement surface in the axial direction, the actuator comprises a moveable feed screw member which is supported in a manner to be rotatable around a center of a rotational shaft via a bearing on an outer circumferential side of the moveable tube section and which has a moveable-side feed screw, an electric motor which rotationally drives the moveable feed screw member, and a case having a fixed-side feed screw which screw-engages with the moveable-side feed screw, and the bearing is placed in the axial direction between an end, on the side of the moveable sheave body, of the moveable-side feed screw and the moveable sheave body.
-
Specification