Power Elements and Automobiles

Abstract

The present disclosure provides a power element and a vehicle including the power element, the power element including a fixing pin extending in a longitudinal direction for fixing the power element to an external component, and a damping cap sleeved onto the fixing pin, the damping cap having a cap body with a hollow polygonal cross section in a plane perpendicular to the longitudinal direction. The disclosure further relates to a vehicle.

Description

[Technical Field]

[0001] The present disclosure relates to a power element and a vehicle including the power element, and in particular to a power element having a fixed damping device. [Background technology]

[0002] A power element in a mechanical system is typically used to power another component in the system. The power element may be, for example, a wiper motor, and typically includes a mounting portion that can pass through a hole in a body metal plate to secure the wiper motor to the body, and requires increased damping between the wiper motor and the body metal plate to prevent resonant vibration between the wiper motor and the body metal plate.

[0003] The mounting part typically includes a fixed post and a cylindrical rubber plug sleeved onto the fixed post. The hole in the main metal plate is typically an elongated hole, typically formed by punching a sheet metal part, resulting in the problem of the edge of the elongated hole folding back. When the mounting part is mounted on the hole in the main metal plate, two opposing sides of the cylindrical rubber plug abut against the long sides of the hole, particularly the folding back. As a result, when the wiper motor vibrates, the fixed post on the wiper motor also vibrates, causing the cylindrical rubber plug to move inside the hole in the main metal plate. This causes the cylindrical rubber plug to wear significantly, impairing its damping properties and thereby affecting the effectiveness of the wiper system.

[0004] Therefore, engineers in this field are dedicated to developing new power elements to address the aforementioned shortcomings of the prior art. Summary of the Invention [Problem to be solved by the invention]

[0005] SUMMARY OF THE INVENTION It is an object of the present disclosure to provide a power element that can effectively address the aforementioned shortcomings of the prior art. [Means for solving the problem]

[0006] The present disclosure provides a power element comprising a fixing pin extending in a longitudinal direction for fixing the power element to an external component, and a damping cap sleeved onto the fixing pin, the damping cap having a cap body with a hollow polygonal cross section in a plane perpendicular to the longitudinal direction.

[0007] In the present disclosure, the above structural design of the damping cap is utilized to ensure that when the fixing pin and the damping cap are attached to the mounting hole of the external component, at least one side of the polygonal cross section of the damping cap abuts at least one long side of the mounting hole, thereby increasing the contact area between the damping cap and the external component and improving the uniformity of the stress distribution on the damping cap, reducing wear and thereby extending its service life.

[0008] In one or more embodiments, the polygonal cross-section is a rectangular cross-section.

[0009] In one or more embodiments, the polygonal cross section is a square cross section.

[0010] In the present disclosure, the polygonal cross section of the damping cap is set to a rectangular cross section or a square cross section, so that when the damping cap is attached to the mounting hole of the external component, two opposing sides of the cross section of the damping cap can abut against the mounting hole, further increasing the contact area between the damping cap and the external component, further effectively improving the uniformity of the stress distribution on the damping cap and reducing wear.

[0011] In one or more embodiments, the damping cap includes a flange disposed on an end of the cap body.

[0012] In the present disclosure, by placing a flange on the end of the cap body, the depth to which the damping cap is inserted into the mounting hole of the external component can be limited, thereby preventing the damping cap from passing through the mounting hole.

[0013] In one or more embodiments, a vent is provided at the top of the damping cap.

[0014] In the present disclosure, by locating a vent hole at the top of the damping cap, gas within the damping cap can be conveniently discharged when the fixing pin is inserted into the damping cap, so that the two are tightly fitted together.

[0015] In one or more embodiments, the fixation pin has a rectangular cross-section in a plane perpendicular to the longitudinal direction.

[0016] In one or more embodiments, the fixation pin has a base and a fixation pin body extending longitudinally from the base, the fixation pin body being inserted into the damping cap and the base abutting a flange of the damping cap.

[0017] With the above structural design of the fixing pin of the present disclosure, when the fixing pin and damping cap are attached to the mounting hole of the external component, the flange can be sandwiched between the external component and the base of the fixing pin, which prevents the damping cap from passing through the main metal plate and causing excessive insertion that results in hard contact between the external component and the fixing pin, which can cause damage to the components and increase the possibility of resonant vibration.

[0018] In one or more embodiments, the fixing pin is provided with a first stop at its free end, and the damping cap has a second stop that engages with the first stop to prevent axial movement of the damping cap relative to the fixing pin.

[0019] In the present disclosure, the damping cap is prevented from moving axially relative to the fixed pin by arranging a first stopper on the fixed pin and a second stopper on the damping cap that fits into the first stopper.

[0020] In one or more embodiments, the fixed pin is fixedly connected to the housing of the power element.

[0021] In one or more embodiments, the damping cap is a rubber cap.

[0022] In the present disclosure, by disposing the damping cap as a rubber cap, it becomes easier to obtain materials for manufacturing the damping cap, and manufacturing costs can be reduced.

[0023] In one or more embodiments, the power element is an output shaft assembly of an electric motor or a drive rod.

[0024] In one or more embodiments, the electric motor is a wiper motor.

[0025] The present disclosure further provides a vehicle comprising a body having an elongated mounting hole and the above-mentioned power element, wherein a fixing pin and a damping cap of the power element are attached to the mounting hole, and at least one side of the polygonal cross section of the damping cap abuts at least one long side of the mounting hole.

[0026] The above structural design of the present disclosure can increase the contact area between the damping cap and the mounting hole in the main body to improve the uniformity of stress distribution on the damping cap, reduce wear, and effectively increase the damping between the power element and the main body, thereby avoiding resonant vibration between them. [Brief explanation of the drawings]

[0027] [Figure 1] 1 is a schematic diagram of an example in which an electric motor is used as a power element, the electric motor having a fixed damping device, according to an embodiment of the present disclosure. [Figure 2] FIG. 10 is a three-dimensional view of a fixation pin according to one embodiment of the present disclosure. [Figure 3] FIG. 10 is a three-dimensional view of a damping cap according to one embodiment of the present disclosure. [Figure 4] 2 is a partial schematic view of the electric motor taken along direction A in FIG. 1, showing a fixed damping device. [Figure 5] 5 is a cross-sectional view of the fixed damping device shown in FIG. 4 taken along the cutting line BB. [Figure 6]2 is a cross-sectional view of the fixed damping device shown in FIG. 1 taken along the cutting line CC. [Figure 7] 2 is a cross-sectional view of the fixed damping device shown in FIG. 1 taken along the cutting line DD. [Figure 8] FIG. 10 is a side view of a fixation pin according to another embodiment of the present disclosure. [Figure 9] 2 is a cross-sectional view of a fixed attenuation device according to another embodiment of the present disclosure taken along section line DD of FIG. 1. DETAILED DESCRIPTION OF THE INVENTION

[0028] Some specific embodiments are described below to illustrate how to practice the present disclosure, and those skilled in the art will readily appreciate other advantages and benefits of the present disclosure from what is disclosed herein.

[0029] The structures, proportions, sizes, etc. shown in the drawings of this specification are not intended to limit the conditions for implementing the present disclosure in cooperation with those disclosed herein, but are intended to facilitate understanding and reading by those skilled in the art. Therefore, they do not have essential technical meaning, and structural modifications, changes in proportion relationships, or size adjustments without affecting the effectiveness and purpose that can be achieved by the present disclosure should still be within the scope of the technical content disclosed herein. Furthermore, terms such as "upper" and "1" used in this specification are intended to clarify the description, not to limit the scope of implementation of the present disclosure, and any changes or adjustments of their relative relationships that do not substantially change the technical content should also be considered to be within the scope of implementation of the present disclosure.

[0030] In order to provide a clearer understanding of the present disclosure, several embodiments of the present disclosure will be described in detail below in conjunction with the drawings.

[0031] The present disclosure provides a power element, as shown in Fig. 1, which may be, for example, an electric motor, more specifically, a wiper motor for an automobile. While the following description will be given of the power element as a wiper motor, it should be understood that the power element may be mounted on another component and is not limited to the wiper motor exemplified herein, as long as there is a vibration problem. The power element includes a fixed damping device 1 attached to its housing, which is configured to fix the power element to a main metal plate and increase damping between the power element and the main metal plate to prevent resonant vibration therebetween.

[0032] As shown in FIGS. 2 and 3 , the fixed damping device 1 includes a fixed pin 10 and a damping cap 20. The fixed pin 10 is fixedly connected to the housing of the power element and configured to fix the power element to an external component (e.g., a main metal plate). Specifically, the fixed pin 10 may be integrally formed with the housing of the power element or may be fixed to the housing of the power element via a fastener (e.g., a screw, a bolt, etc.). As shown in FIG. 2 , the fixed pin 10 may include a base 11 and a fixed pin body 12 extending from the base 11 in a longitudinal direction X. The fixed pin body 12 has a substantially flat strip shape with no other components thereon. The fixed pin body 12 has a substantially rectangular cross section on a plane perpendicular to the longitudinal direction X (as shown in FIG. 6 ). However, it should be noted that in the present disclosure, the rectangular cross section may also be a rectangular cross section or a square cross section. The fixed pin 10 may be made of a metal or alloy material, such as an aluminum alloy.

[0033] As shown in Figures 3, 5 and 7, when a wiper motor, which is a power element, is installed in an automobile, if the fixed pin 10 is fixed to an external component, it is necessary to sleeve the damping cap 20 of the fixed damping device 1 onto the fixed pin 10 in order to increase damping between them and reduce vibration transmission. Specifically, the damping cap 20 includes a cap body 21, which is sleeved onto the fixed pin body 12, and the two may be interference-fitted. The cap body 21 may have a hollow polygonal cross section on a plane perpendicular to the longitudinal direction X, so that at least one side of the cap body can abut against the mounting hole in the main metal plate. Preferably, the polygonal cross section described above may be a rectangular cross section (as shown in FIG. 6), so that when the cap body 21 is attached to the mounting hole of the main metal plate (as shown by the dashed line in FIG. 6), two opposing sides of the cap body 21 in the cross section abut against the main metal plate, increasing the contact area with the main metal plate and enabling stress to be evenly distributed, reducing wear and extending the service life. This indicates that the above configuration of the present disclosure can address the drawback of exacerbating damage due to stress concentration caused by an excessively small contact area between the cap body having a circular cross section and the main metal plate in the prior art.

[0034] The damping cap 20 may further include a flange 22, which may be disposed at one end of the cap body 21. In the embodiment shown in FIG. 3, the flange 22 may be a circular flange surrounding the cap body 21, which may protrude from a free end of the cap body 21, for example, so that when the damping cover 20 is assembled onto the fixing pin 10, the flange 22 abuts against the base 11 of the fixing pin 10 (as shown in FIGS. 5 and 7). With this configuration, when the damping device 1 is attached to the mounting hole of the main metal plate (as shown by the dashed line in FIG. 7), the flange 22 is sandwiched between the main metal plate and the base 11 of the fixing pin 10, thereby preventing the damping cap 20 from passing through the main metal plate and the problem of excessive insertion resulting in strong contact between the main metal plate and the fixing pin 10, which may result in damage to components and an increased possibility of resonant vibration. Furthermore, the flange 22 described in this specification is not limited to a circular flange, and for example, the flange 22 may also be a part or a plurality of discontinuous protrusions of a circular flange, as long as the flange 22 can be sandwiched between the main metal plate and the base 11 of the fixing pin 10 to avoid direct contact therebetween when the fixed damping device 1 is attached to the mounting hole of the main metal plate.

[0035] Continuing to refer to FIG. 3 , the damping cap 20 further includes a vent hole 23 at its top, which facilitates the release of gas from the interior of the damping cap 20 when the fixing pin 10 is inserted into the damping cap 20, resulting in a tight fit between the two. Furthermore, the arrangement of the vent hole also facilitates the manufacture of the damping cap 20 by demolding. The damping cap 20 may be an elastic cap, such as a rubber cap, which makes it easier to obtain materials for manufacturing the damping cap and reduces manufacturing costs. The hardness of the damping cap 20 is within the range of approximately 57 to 67 Shore A hardness, such as 57, 60, 62, 64, or 67 Shore A hardness.

[0036] 4 to 7 , when the damping cap 20 is assembled / sleeved onto the fixed pin 10, elastic deformation occurs, resulting in a tight fit (i.e., an interference fit) between them, which allows the damping cap 20 to move when the power element vibrates. After the damping cap 20 and the fixed pin 10 are assembled, the fixed damping device 1 can be inserted into the mounting hole of the body metal plate (as shown in FIGS. 6 and 7 ) so that the body metal plate is in contact with the flange 22 of the damping cap 20 or is spaced from the flange 22 by a gap of 2 mm or less. The mounting hole of the body metal plate may be an elongated mounting hole, for example, an oval hole with a length L2 and a width W2. The specific dimensions of the fixed damping device 1 and the mounting hole of the body metal plate can be selected according to actual needs, and the present disclosure does not impose any specific limitations thereon.

[0037] When the fixed damping device 1 of the above structure is inserted into the mounting hole of the main metal plate, the two opposing sides (for example, the two opposing long sides shown in Figure 6) of the fixed damping device 1 abut against the mounting hole, thereby increasing the contact area between the damping cap 20 and the main metal plate. Therefore, when the power element drives and moves the damping cap 20, the uniformity of the stress distribution on the damping cap 20 is improved, which addresses the drawback of the prior art in which damage is aggravated by stress concentration caused by the excessively small contact area between the cap body having a circular cross-section and the main metal plate, thereby reducing wear.

[0038]

[0033] Hereinafter, other embodiments of the present disclosure will be described. For simplicity, the following description will focus on the differences between each embodiment, and the similarities between them will not be detailed again in this specification. Furthermore, the same components in the described embodiments of the present disclosure will be represented by the same labels to facilitate comparison between the embodiments.

[0039] FIG. 8 is a side view of a fixed pin according to another embodiment of the present disclosure, and FIG. 9 is a cross-sectional view of a fixed damping device according to another embodiment of the present disclosure taken along line DD in FIG. 1 . As shown in FIGS. 8 and 9 , the fixed pin 10 further includes a first stopper 13 in addition to a base 11 and a fixed pin body 12. The first stopper 13 is located at the free end of the fixed pin 10 and is disposed on at least one wall of the fixed pin 10. In the embodiment shown in FIG. 8 , the first stopper 13 is disposed on two opposing sides of the fixed pin 10. Correspondingly, the damping cap 20 may include a second stopper 23 (as shown in FIG. 9 ) in the damping cap body 21 to fit into the first stopper of the fixed pin 10, thereby preventing the damping cap 20 from moving axially relative to the fixed pin 10. The fixed damping device 1 having such a structure not only reduces wear on the damping cap 20 due to the mounting holes in the main metal plate and extends its service life, but also reduces axial movement of the damping cap 20 relative to the fixed pin 10.

[0040] Although the power element of the above embodiment has been described using the wiper motor shown in FIG. 1 as an example, the present disclosure is not limited thereto and may be, for example, another electric motor or drive rod output shaft assembly. In this case, the fixed damping device may be disposed on the housing of the electric motor or the support seat of the drive rod output shaft assembly. Furthermore, the fixed damping device may also be disposed on a gearbox connected to the electric motor. As long as the fixed damping device has the structure described in this specification, the same beneficial effects as described above can be achieved.

[0041] The present disclosure provides a power element having a fixed damping device, the fixed damping device comprising a fixed pin arranged on a housing of the power element and a damping cap sleeved onto the fixed pin, the damping cap being arranged to have a hollow polygonal cross section (particularly a hollow rectangular cross section) on a plane perpendicular to the longitudinal direction, so that when the fixed damping device is attached to the mounting hole of the main metal plate, the two opposing sides of the damping cap can abut against the main metal plate to increase the contact area with the main metal plate, thereby distributing stress uniformly and reducing wear, which effectively addresses the drawback of exacerbating damage due to stress concentration caused by an excessively small contact area between the cap body having a circular cross section and the main metal plate in the prior art.

[0042] The present disclosure further provides a motor vehicle including a main body (particularly a main body metal plate) and a power element having the above-mentioned structure, wherein the main body metal plate has an elongated mounting hole, a fixed damping device of the power element is mounted in the mounting hole, and at least one side of the polygonal cross section of the damping cap of the fixed damping device abuts at least one long side of the mounting hole, thereby increasing the contact area between the damping cap and the main body metal plate, improving the uniformity of stress distribution on the damping cap, reducing wear, and effectively strengthening the damping between the power element and the main body, thereby avoiding resonant vibration between them.

[0043] Although some exemplary embodiments of the power element and the vehicle provided in the present disclosure have been described above with reference to preferred embodiments, those skilled in the art can understand that variations and modifications can be made to the specific embodiments described above without departing from the concept of the present disclosure, and various combinations of the technical features and structures disclosed herein can be made without exceeding the scope of protection of the present disclosure, which is therefore defined by the appended claims.

Claims

1. A power element, a fixing pin (10) extending in a longitudinal direction (X) and configured to fix said power element to an external component; a damping cap (20) sleeved onto the fixing pin (10); A power element, characterized in that said damping cap (20) has a cap body (21), said cap body (21) having a hollow polygonal cross section on a plane perpendicular to said longitudinal direction (X).

2. 2. A power element according to claim 1, characterized in that said polygonal cross section is a rectangular cross section.

3. 3. A power element according to claim 2, characterized in that said polygonal cross section is a square cross section.

4. 4. A power element according to any one of claims 1 to 3, characterized in that the damping cap (20) comprises a flange (22), the flange (22) being arranged at an end of the cap body (21).

5. A power element according to any one of claims 1 to 3, characterized in that the damping cap (20) is provided with a vent (23) in the upper part thereof.

6. A power element according to claim 1, characterized in that said fixing pin (10) has a rectangular cross section in a plane perpendicular to said longitudinal direction (X).

7. 7. The power element according to claim 6, wherein the fixing pin (10) has a base (11) and a fixing pin body (12) extending from the base (11) in the longitudinal direction (X), the fixing pin body (12) being inserted into the damping cap (20), and the base (11) abutting against a flange (22) of the damping cap (20).

8. 8. A power element according to claim 7, characterized in that the fixing pin (10) is provided with a first stop (13) at its free end, and the damping cap (20) has a second stop (23) that fits into the first stop (13) to prevent axial movement of the damping cap (20) relative to the fixing pin (10).

9. 2. A power element according to claim 1, characterized in that the fixing pin (10) is fixedly connected to the housing of the power element.

10. A power element according to claim 5, characterized in that said damping cap (20) is a rubber cap.

11. 2. The power element of claim 1, wherein the power element is an output shaft assembly of an electric motor or a drive rod.

12. 12. A power element according to claim 11, characterized in that the electric motor is a wiper motor.

13. a body having an elongated mounting hole; and a power element according to any one of claims 1 to 12, The fixing pin (10) and the damping cap (20) of the power element are attached to the mounting hole, and at least one side surface of the polygonal cross section of the damping cap (20) abuts against at least one long side of the mounting hole.

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