JP2013253662A - Stabilizer device and continuously variable transmission - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve assemblability of a stabilizer device by simplifying the shape of a guide rail.SOLUTION: A stabilizer device 6 includes: a guide rail 7 covering a winding transmission member 4; and a stopper 8 swingably supporting the guide rail 7. The guide rail 7 is supported by the stopper 8 via a support part 12. The stopper 8 is formed by screwing a first shaft member 21 with a second shaft member 22. The first shaft member 21 includes a first regulating part 23 facing the support part 12 of the guide rail 7 from the right side. The second shaft member 22 includes a second regulating part 24 facing the support part 12 of the guide rail 7 from the left side.

Description

  The present invention relates to a stabilizer device and a continuously variable transmission including the same.

  A continuously variable transmission for an automobile includes a primary pulley having a fixed sheave and a movable sheave, a secondary pulley having a fixed sheave and a movable sheave, and a winding transmission member wound around the primary pulley and the secondary pulley. There is something.

  In this type of continuously variable transmission, the portion (string portion) between the primary pulley and the secondary pulley of the winding transmission member is not restricted by the pulley, and thus easily vibrates (string vibration). There is a problem that noise characteristics deteriorate.

  Patent Document 1 discloses using a stabilizer device to reduce string vibration. The stabilizer device includes a guide rail that covers a winding transmission member that transmits power in the continuously variable transmission, and a stopper that supports the guide rail so as to be swingable.

  The continuously variable transmission is accommodated in a casing composed of a casing body and a lid, and the stabilizer device is assembled after the continuously variable transmission is accommodated in the casing body.

  The guide rail shown in Patent Document 1 is composed of a first half and a second half which are divided at the central portion in the width direction of the winding transmission member, and is supported by a stopper via a support portion. Yes. The stopper is a long and integral shaft member, and one end is supported by the casing body and the other end is supported by the lid of the casing.

JP 2000-304115 A

  In the above-mentioned Patent Document 1, in order to prevent the first half and the second half from being separated from each other, a hook and an opening corresponding to this are provided in each half, and these are engaged. The halves are joined together. Therefore, there has been a problem that the shape of the guide rail is complicated by the hook and the opening. There is also a problem that it is difficult to assemble the stabilizer device.

  An object of the present invention is to simplify the shape of the guide rail and improve the ease of assembling the stabilizer device.

  The present invention provides a stabilizer device including a guide rail that covers a winding transmission member that transmits power in a continuously variable transmission, and a stopper that supports the guide rail so as to be able to swing. The guide rail includes the winding transmission member. The first half and the second half divided at the center in the width direction are supported by the stopper via a support portion, and the stopper has the width portion in the width direction. A first restricting portion facing from one side is provided, and a second restricting portion facing from the other side in the width direction is provided on the support portion.

  The stopper may be composed of a single member, or may be composed of a first shaft member and a second shaft member coupled together. In the latter case, the first restriction member is provided on the first shaft member, and the second restriction member is provided on the second shaft member.

  According to the stabilizer device of the present invention, since the stopper is provided with the restricting portion that faces the support portion of the guide rail, the stopper is in a state where the first half portion and the second half portion of the guide rail are coupled. It also serves as a coupling member for maintaining the above. For this reason, it becomes possible to simplify the structure for joining the 1st half part and 2nd half part of a guide rail, and, as a result, the structure of a stabilizer apparatus can be simplified. Thereby, the ease of assembling the stabilizer device is improved.

FIG. 1 is a front view showing a first embodiment of a stabilizer device and a continuously variable transmission according to the present invention. FIG. 2 is a cross-sectional view orthogonal to the traveling direction of the winding transmission member of the main part of the first embodiment. FIG. 3 is a cross-sectional view orthogonal to the traveling direction of the winding transmission member of the main part of the second embodiment of the stabilizer device and continuously variable transmission according to the present invention.

  Embodiments of the present invention will be described below with reference to the drawings. In the following description, the left and right refer to the left and right in FIGS.

  1 and 2 show a first embodiment of a stabilizer device and a continuously variable transmission according to the present invention.

  As shown in FIG. 1, the continuously variable transmission (1) has a primary transmission (2), a secondary pulley (3), a primary pulley (2) and a secondary pulley (3) that are wound around a transmission. A member (4), a casing (5), and a stabilizer device (6) are provided.

  The primary pulley (2), the secondary pulley (3), the winding transmission member (4), and the stabilizer device (6) are accommodated in the casing (5).

  The stabilizer device (6) is a string portion of the winding transmission member (4) disposed between the primary pulley (2) and the secondary pulley (3) (the portion not regulated by the pulley (2) (3)) Regulates movement (vibration). The stabilizer device (6) is provided in the chord part of the part from the primary pulley (2) toward the secondary pulley (3).

  The continuously variable transmission (1) has an underdrive with a minimum speed ratio (rotational speed of the secondary pulley (3) / rotational speed of the primary pulley (2)) for low speed driving and a gear ratio for high speed driving. The gear ratio changes with the maximum overdrive. In the underdrive state (indicated by a two-dot chain line in FIG. 1), the winding diameter on the primary pulley (2) side is minimum and the winding diameter on the secondary pulley (3) side is maximum. In the overdrive state (shown by solid and broken lines in FIG. 1), the winding diameter on the primary pulley (2) side is the maximum and the winding diameter on the secondary pulley (3) side is the minimum.

  Of the directions orthogonal to the traveling direction of the winding transmission member (4), the axial direction of the pulleys (2) and (3) may be referred to as the width direction of the winding transmission member (4) (simply referred to as “width direction”). The direction perpendicular to the width direction is referred to as the radial direction of the transmission member (4) (sometimes simply referred to as “radial direction”).

  The stabilizer device (6) includes a cylindrical guide rail (7) through which a string portion of the winding transmission member (4) is inserted so as to be relatively movable, and a stopper (8) that supports the guide rail (7) so as to be swingable. ).

  The stopper (8) is cylindrical and extends in the width direction.

  The guide rail (7) is made of synthetic resin and has a cylindrical main body (11). The cross section of the main body (11) is formed in a rectangular shape having a size that allows the winding transmission member (4) to be inserted with some play. Thereby, the string portion of the winding transmission member (4) is inserted into the guide rail (7) so as to be relatively movable, and the traveling direction of the winding transmission member (4) of the string portion of the winding transmission member (4) The movement in the direction orthogonal to is regulated by the guide rail (7).

  A substantially U-shaped support portion (12) as viewed from the width direction is integrally formed at the central portion of the guide rail (7) in the traveling direction of the main body (11). The support portion (12) has a pair of side walls (12a) and (12b) that face each other in the width direction. A stopper (8) is disposed so as to penetrate the pair of side walls (12a) (12b). The movement of the guide rail (7) in the traveling direction with respect to the stopper (8) is restricted by the side walls (12a) and (12b) coming into contact with the stopper (8). The inner surface of the support portion (12) is formed by a metal reinforcing material (13) having a U-shaped cross section.

  As shown in FIG. 2, the main body (11) includes an inner wall (11a) facing the radially inner side surface of the winding transmission member (4) and an outer wall facing the radially outer surface of the winding transmission member (4). (11b) and side walls (11c) and (11d) respectively opposed to both outer side surfaces in the width direction of the winding transmission member (4). The inner wall (11a) and the outer wall (11b) restrict the radial movement of the winding transmission member (4), and the pair of side walls (11c) (11d) controls the width of the winding transmission member (4). Directional movement is restricted.

  The guide rail (7) includes a first half (7a) and a second half (7b) which are divided into two at the center in the width direction. The first half (7a) and the second half (7b) are wound around the strings of the wound transmission member (4) after being wound between the pulleys (2) and (3). The member (4) is attached so as to sandwich the string portion from both sides in the width direction.

  The stopper (8) is made of, for example, carbon steel. As shown in FIG. 2, the first shaft member (21) on the right side attached to the main body (one wall) (5a) of the casing (5) and the casing, as shown in FIG. It comprises a second shaft member (22) on the left side attached to the lid (5b) (5b) of the lid (5) of (5).

  The second shaft member (22) has a larger outer diameter and a shorter length than the first shaft member (21). A male screw portion (25) is provided at the left end portion of the first shaft member (21). A female screw portion (26) to which the male screw portion (25) of the first shaft member (21) is screwed is provided at the right end portion of the second shaft member (22). The male thread portion (25) of the first shaft member (21) is formed to protrude leftward from the support portion (12) of the guide rail (7). A flange portion serving as a first restricting portion (23) is integrally formed with the first shaft member (21). The first restricting portion (23) faces the support portion (12) of the guide rail (7) from the right side (one side in the width direction). The second restricting portion (24) whose end surface at the right end of the second shaft member (22) having a relatively large diameter faces the support portion (12) of the guide rail (7) from the left side (the other side in the width direction). ).

  The support portion (12) of the guide rail (7) is formed in the width direction by the first restricting portion (23) of the first shaft member (21) and the second restricting portion (24) of the second shaft member (22). Movement is restricted. Thereby, it is prevented that the 1st half part (7a) and 2nd half part (7b) of a guide rail (7) isolate | separate. That is, the stopper (8) also serves as a coupling member for maintaining the state where the first half (7a) and the second half (7b) of the guide rail (7) are coupled. . This eliminates the need for a structure (such as hooks and claws and openings for fitting them) for firmly joining the halves (7a) and (7b), and simplifies the shape of the guide rail (7). it can. As a result, the structure of the stabilizer device (6) can be simplified, thereby improving the ease of assembling the stabilizer device (6).

  The guide rail (7) swings while being supported by the stopper (8) as the speed ratio changes. As a result, the movement of the winding transmission member (4) in the direction (radial direction and width direction) perpendicular to the traveling direction of the string portion is restricted by the guide rail (7), and the string vibration of the winding transmission member (4) is restricted. Reduced.

  In order to assemble the stabilizer device (6), first, the first shaft member (21) is attached to the casing body (5a), then the guide rail (7) is wound around the transmission member (4), and then the second The shaft member (22) may be screwed to the first shaft member (21). Since the guide rail (7) can be attached to the first shaft member (21) without the second shaft member (22), it can be easily performed. The second shaft member (22) is screwed to the first shaft member (21), so that the shaft members (21) and (22) can be firmly coupled to each other.

  In the above description, the first shaft member (21) and the second shaft member (22) are coupled by screwing, but may be coupled by fitting instead of screwing. Further, the second shaft member (22) is not made larger in diameter than the first shaft member (21) as a whole, but only the abutting end portion with the first shaft member (21) is made larger in diameter. Also good.

  FIG. 3 shows a second embodiment of the stabilizer device (6) according to the present invention. In this embodiment, the guide rail (7) is the same as that of the first embodiment, and the same reference numerals are given to the same components and the description thereof is omitted.

  In FIG. 3, the stopper (30) includes a first shaft member (31) attached to the body (5a) (one wall portion) of the casing (5), and a lid (5b) (one wall) of the casing (5). And a second shaft member (32) attached to the other wall portion facing the portion (5a).

  The first shaft member (31) and the second shaft member (32) have the same outer diameter, and the second shaft member (32) is shorter in length than the first shaft member (31). Yes.

  A flange portion serving as a first restricting portion (33) facing the support portion (12) of the guide rail (7) from the right side (one side in the width direction) is integrally formed in the intermediate portion in the axial direction of the first shaft member (31). Is provided. The first shaft member (31) has a pair of side walls (12a) (12b) of the support portion (12) of the guide rail (7) such that the left end portion (35) protrudes leftward from the support portion (12). ).

  The right end of the second shaft member (32) is integrally provided with a flange portion serving as a second restricting portion (34) facing the support portion (12) of the guide rail (7) from the left side (the other side in the width direction). It has been. A concave portion (36) into which the left end portion (35) of the first shaft member (31) can be inserted is provided at the right end portion of the second shaft member (32). By fitting the left end portion (35) of the first shaft member (31) into the recess (36) of the second shaft member (32), the first shaft member (31) and the second shaft member (32) are brought together. Are combined.

  Thus, the support portion (12) of the guide rail (7) is guided by the first restricting portion (33) of the first shaft member (31) and the second restricting portion (34) of the second shaft member (32). The movement of the rail (7) in the width direction is restricted. Thereby, it is prevented that the 1st half part (7a) and 2nd half part (7b) of a guide rail (7) isolate | separate. That is, the stopper (30) also serves as a coupling member for maintaining the state where the first half (7a) and the second half (7b) of the guide rail (7) are coupled. . This eliminates the need for a structure (such as hooks and claws and openings for fitting them) for firmly joining the halves (7a) and (7b), and simplifies the shape of the guide rail (7). it can. As a result, the structure of the stabilizer device (6) can be simplified, thereby improving the ease of assembling the stabilizer device (6).

  To assemble the stabilizer device (6) of the second embodiment, firstly attach the first shaft member (31) to the casing body (5a), and then attach the guide rail (7) to the transmission member (4). After that, the second shaft member (32) may be fitted to the first shaft member (31). Since the guide rail (7) can be attached to the first shaft member (31) without the second shaft member (32), it can be easily performed. The shaft members (21) and (22) can be easily coupled to each other by fitting the second shaft member (32) to the first shaft member (31).

  In the said 1st and 2nd embodiment, the clearance gap is provided between the support part (12) of a guide rail (7), and each control part (23) (24) (33) (34). This clearance prevents the support portion (12) from sliding with respect to the restricting portions (23) (24) (33) (34) when the guide rail (7) rotates or moves in the traveling direction. The The gap is provided so that the state in which the first half (7a) and the second half (7b) of the guide rail (7) are fixed is sufficiently maintained.

  In the first and second embodiments described above, a cylindrical convex portion is used for positioning when the half portions (7a) and (7b) of the guide rail (7) are fitted to the winding transmission member (4). And since it is easy to form the recessed part fitted to this, you may provide these in both half part (7a) (7b).

  In addition, after the shaft part of the stopper (8) is attached to the support part (12) of the guide rail (7), the restricting parts (23), (33), (34) such as flange parts are connected to the shaft of the stopper (8). The form attached to a part may be sufficient.

  In addition, the flange portions that are the restricting portions (23), (33), and (34) may be formed integrally with the shaft members (21), (31), and (32), or may be separated. When they are separated, they are integrated by appropriate means such as press fitting or screwing.

  The first shaft member (21) (31) and the second shaft member (22) (32) are formed in a bottomed hole provided in the casing (5) (the main body (5a) and the lid (5b)), for example. The end portion is inserted to be attached to the casing (5), but is not limited thereto.

  Although only one stabilizer device (6) is shown on the lower side in FIG. 1, it may be provided on the upper and lower sides, or only on the upper side. There may also be a gap between the stopper (8) and the support part (12) of the guide rail (7) (the guide rail (7) can move in the direction of travel), and there is no gap (the guide rail). (7) movement in the traveling direction is not possible). The stopper (8) may be disposed on the radially outer side of the winding transmission member (4).

  The winding transmission member (4) may be a belt or a chain. In the case of a chain, for example, a plurality of links, a plurality of first pins that connect the plurality of links so as to be bent, and And a second pin.

(1): continuously variable transmission, (2) (3): pulley, (4): winding transmission member, (5): casing, (6): stabilizer device, (7): guide rail, (7a) : First half, (7b): second half, (8): stopper, (12): support, (21): first shaft member, (22): second shaft member, (23 ): First regulating part, (24): second regulating part, (25): male thread part, (26): female thread part, (31): first shaft member, (32): second shaft member, (33): First restriction part, (34): Second restriction part, (35): Tip part, (36): Concave part

Claims (4)

In a stabilizer device comprising: a guide rail that covers a winding transmission member that transmits power in a continuously variable transmission; and a stopper that supports the guide rail so as to be swingable.
The guide rail is composed of a first half and a second half that are divided at the center in the width direction of the winding transmission member, and is supported by the stopper via a support portion,
A stabilizer device in which the stopper is provided with a first restricting portion facing the support portion from one side in the width direction, and a second restricting portion facing the support portion from the other side in the width direction. .   The stopper is configured by combining a first shaft member and a second shaft member, the first shaft member is provided with the first restricting portion, and the second shaft member is provided with the first shaft member. The stabilizer apparatus of Claim 1 with which the said 2nd control part is provided.   The outer diameter of the coupling portion is different between the first shaft member and the second shaft member, and the end surface of the shaft member with the larger outer diameter of the coupling portion is the first restricting portion, and the outer diameter of the coupling portion is The stabilizer device according to claim 2, wherein a flange portion serving as the second restricting portion is formed on a shaft member having a smaller diameter. A primary pulley, a secondary pulley, a winding transmission member wound around the primary pulley and the secondary pulley, a casing containing the primary pulley, the secondary pulley and the winding transmission member, a stabilizer device, In a continuously variable transmission comprising:
The stabilizer device according to any one of claims 1 to 3, wherein the first shaft member is supported by one wall portion of the casing, and the second shaft member is the one of the casing. A continuously variable transmission supported by the other wall facing the one wall.

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