阅读说明：本技术 一种汽车发动机的皮带张紧轮机构 (Belt tensioning wheel mechanism of automobile engine ) 是由 翁涛 查炳南 于 2019-01-30 设计创作，主要内容包括：本发明涉及汽车技术领域,公开了一种汽车发动机的皮带张紧轮机构；为了使摩擦阻尼具有非对称的性质等等,提出如下技术方案。压板(6)和摇臂(3)腔体在圆周方向上相对转动,在轴向上相对运动；阻尼件(5)与摇臂(3)腔体在圆周方向上同步；阻尼件(5)和压板(6)的相抵接触面包括两个以上的斜坡形摩擦相对面；在每一个斜坡形摩擦相对面中,阻尼件(5)的相抵摩擦面为斜坡形的阻尼面(5a),压板(6)的相抵摩擦面为斜坡形的压力面(6a)；斜坡形的阻尼面(5a)和斜坡形的压力面(6a),两者数量一致和形状吻合,并且摩擦相抵；各斜坡形摩擦相对面具有旋转对称的性质。有益效果是：摩擦阻尼具有非对称的性质等等。(The invention relates to the technical field of automobiles, and discloses a belt tensioning wheel mechanism of an automobile engine; in order to make the frictional damping have asymmetric properties, etc., the following technical solutions are proposed. The pressure plate (6) and the cavity of the rocker arm (3) relatively rotate in the circumferential direction and relatively move in the axial direction; the damping piece (5) and the cavity of the rocker arm (3) are synchronous in the circumferential direction; the contact surface between the damping piece (5) and the pressing plate (6) comprises more than two slope-shaped friction opposite surfaces; in each slope-shaped friction opposite surface, the friction resisting surface of the damping piece (5) is a slope-shaped damping surface (5a), and the friction resisting surface of the pressure plate (6) is a slope-shaped pressure surface (6 a); the slope-shaped damping surface (5a) and the slope-shaped pressure surface (6a) are consistent in quantity and matched in shape and are rubbed and abutted; each ramp-shaped friction opposing face has rotationally symmetric properties. The beneficial effects are that: frictional damping has asymmetric properties, etc.)

1. The utility model provides a belt tightener mechanism of automobile engine which characterized by:

the method comprises the following steps: the device comprises a rocker arm (3) provided with a cavity, a cylindrical torsion spring (2), a seat body (1), a core shaft (7), a bushing (4), a pressing plate (6) and a damping part (5) arranged in the cavity of the rocker arm (3);

a cylindrical torsion spring (2), a damping member (5), a pressure plate (6), a mandrel (7), and a bushing (4), the five having a common central axis;

the lower part of the cylindrical torsion spring (2) is fixedly connected with the base body (1); the upper part of the cylindrical torsion spring (2) is fixedly connected with the rocker arm (3); the rocker arm (3) is abutted against the damping piece (5); the damping piece (5) is abutted against the pressure plate (6);

the pressure plate (6) and the cavity of the rocker arm (3) rotate relatively in the circumferential direction and move relatively in the axial direction;

the damping piece (5) and the cavity of the rocker arm (3) are synchronous in the circumferential direction;

the lower end of the mandrel (7) is fixedly connected with the base body (1), and the upper end of the mandrel (7) is fixedly connected with the pressing plate (6);

the damping piece (5) and the pressure plate (6) have contact surfaces comprising more than two slope-shaped friction opposite surfaces;

in each slope-shaped friction opposite surface, the friction resisting surface of the damping piece (5) is a slope-shaped damping surface (5a), and the friction resisting surface of the pressure plate (6) is a slope-shaped pressure surface (6 a); the slope-shaped damping surface (5a) and the slope-shaped pressure surface (6a) are consistent in quantity and matched in shape and are rubbed and abutted;

each ramp-shaped friction opposing face has rotationally symmetric properties.

2. The belt tensioner mechanism of an automotive engine as claimed in claim 1, characterized in that:

the damping piece (5) and the cavity of the rocker arm (3) are synchronous in the circumferential direction, and the technical measure refers to any one of the following two measures:

a. a convex structure is arranged on the damping part (5), and a concave structure is arranged on the cavity of the rocker arm (3); the convex structure is embedded into the concave structure, so that the damping part (5) and the cavity of the rocker arm (3) are synchronous in the circumferential direction;

b. a concave structure is arranged on the damping part (5), and a convex structure is arranged on the cavity of the rocker arm (3); the convex structure is embedded into the concave structure, so that the damping part (5) and the cavity of the rocker arm (3) are synchronous in the circumferential direction.

3. The belt tensioner mechanism of an automotive engine as claimed in claim 1, characterized in that:

the structure of the two ends of the cylindrical torsion spring (2) is any one of the following two structures:

a. two ends of the cylindrical torsion spring (2) are provided with hook heads;

b. the two ends of the cylindrical torsion spring (2) are straight, namely, the cylindrical torsion spring is not provided with a hook head.

Technical Field

The invention relates to the technical field of automobiles, in particular to a belt tensioning wheel mechanism of an automobile engine; the tensioner mechanism of the present invention can provide asymmetric friction damping.

Background

Disclosure of Invention

Drawings

Figure 1 is an exploded view of a prior art belt tensioner.

Figure 2 is an exploded view of the inventive belt tensioner mechanism.

Figure 3 is a perspective schematic view of the inventive belt tensioner mechanism.

Figure 4 is a front view of the inventive belt-tensioner mechanism.

Figure 5 is a cross-sectional view of the inventive belt-tensioner mechanism.

Fig. 6 is a schematic perspective view of the inventive damper 5 and the pressure plate 6, in which three ramp-shaped friction opposing surfaces are provided.

FIG. 7 is a second perspective view of the damping member 5 and the pressing plate 6 of the present invention, in which three ramp-shaped friction opposing surfaces are provided; fig. 6 and 7 differ in two ways: one difference is that the viewing angle is different and the other difference is that the slope is not the same.

FIG. 8 is a cross-sectional view of inventive platen 6, damping member 5; the platen 6 and the damping member 5 in fig. 8 have been rotated relative to each other through several angles.

Fig. 9 is a perspective view of the inventive cylindrical torsion spring with hook heads at both ends.

FIG. 10 is a perspective view of the cylindrical torsion spring of the present invention with two straight ends

Fig. 11 is a force analysis diagram of the damping member 5 and the pressure plate 6 when the tension wheel mechanism of the invention is in rotational friction in the loading direction.

Fig. 12 is a force analysis diagram of the damping member 5 and the pressing plate 6 when the tensioning wheel mechanism of the invention is in rotating friction in the unloading direction.

Fig. 13 is a third perspective view of the inventive damper 5 and the pressure plate 6, in which two ramp-shaped friction opposite surfaces are provided.

FIG. 14 is a fourth schematic perspective view of the damping member 5 and the pressing plate 6 of the present invention, in which the number of the corresponding slope-shaped friction opposing surfaces is two; fig. 13 and 14 differ in two ways: one difference is that the viewing angle is different and the other difference is that the slope is not the same.

Fig. 15 is a schematic view of the damper 5 provided with a convex structure.

Fig. 16 is a schematic view of a rocker arm 3 with a dimple arrangement on the cavity.

Fig. 17 is a schematic view of the protrusion on the damper 5 embedded in the depression on the cavity of the rocker arm 3.

Fig. 18 is a schematic view of the damper 5 provided with the concave structure.

Figure 19 is a schematic view of a rocker arm 3 with a raised structure on the cavity.

FIG. 20 is a schematic view of the recessed structure of the damper 5 embedded in the raised structure of the cavity of the rocker arm 3;

FIG. 21 is a schematic view of an inventive cylindrical torsion spring with hook heads at both ends;

fig. 22 is a schematic view of the seat body 1 provided with a concave structure;

fig. 23 is a schematic view of the structure of the hook at the end of the cylindrical torsion spring being snapped into the recess of the housing 1, and it can be seen from the figure that: a certain mounting method of a cylindrical torsion spring with hook heads at two ends.

Description of the figures

A base body (1); a cylindrical torsion spring (2); a rocker arm (3); a bushing (4); a damping member (5); a damping surface (5 a); a platen (6); a pressure surface (6 a); a mandrel (7); a pulley (8); a dust cover (9); a bearing (10); a bolt (11); a bearing shell (12); a pressure bearing shell (13); a panel (16).

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Detailed Description