KR102014322B1 - Painting mask for vehicle shaft - Google Patents

Abstract

The present invention relates to a mask for painting to minimize the shaft failure rate due to poor coating during the painting process of the vehicle shaft.
Specifically, the present invention is a coating mask for preventing the painting of the longitudinal end of the vehicle shaft in the painting process of the vehicle shaft, the first end is configured to be expanded and contracted in the radial direction, and the closed first A main body portion including two ends and surrounding the longitudinal end portion of the vehicle shaft for a predetermined length; And a pressing member for pressing the circumference of the first end of the main body portion inward to closely contact the longitudinal end of the vehicle shaft and the inner surface of the first end of the main body portion.

Description

Mask for painting of car shaft {PAINTING MASK FOR VEHICLE SHAFT}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mask for painting of a vehicle shaft, and more particularly, to a mask for painting, which minimizes a shaft failure rate due to poor painting during a painting process of a vehicle shaft.

In general, the vehicle shaft serves to transfer the driving force generated from the engine that is the driving unit to the wheel.

Examples of such a vehicle shaft include shafts included in a constant velocity joint assembly as disclosed in Korean Patent Publication No. 10-2011-0121400.

Here, the constant velocity joint assembly is a joint used for the front axle of the front wheel drive vehicle, and is provided between the main shaft connected to the engine and the driven shaft rather than in a straight line so that power transmission is made evenly without changing the rotational angular velocity. This corresponds to the connecting parts.

The constant velocity joint assembly includes a first shaft that receives a driving force from a transmission, a second shaft that receives a driving force from the first shaft, and transmits the driving force toward the wheel, and an invoo that connects the other end of the first shaft to one end of the second shaft. An inboard side constant velocity joint, an outboard side constant velocity joint connecting a third shaft connected to the wheel and receiving a driving force from the second shaft, and the other end of the second shaft and one end of the third shaft It includes.

At this time, the second shaft is commonly referred to as a drive shaft or a half shaft, and the second shaft is generally formed as a hollow shaft or tubular shaft.

The first shaft, the second shaft, and the third shaft may be integrally provided with a power transmission unit such as a spline at one end or both ends to transmit and receive power to each other as a vehicle shaft.

Such a vehicle shaft undergoes a painting process to improve corrosion resistance and improve product quality at the time of shipment of the product, and when paint is painted on a power transmission unit such as a spline in such a painting process, a defective product such as a decrease in power transfer rate due to a paint layer. There has been a fear of this happening.

The manufacturing method of the constant velocity joint and / or the manufacturing method of the vehicle shaft according to the prior art do not disclose a technique for preventing the coating to the part that should not be painted in such a painting process.

Accordingly, it is an object of the present invention to solve the problems of the prior art.

Specifically, it is an object of the present invention to provide a mask for painting to minimize the product defect rate generated during the painting process of the vehicle shaft.

According to an embodiment of the present invention for solving the above problems, the present invention, as a coating mask for preventing the painting of the longitudinal end of the vehicle shaft in the coating process of the vehicle shaft, radially shrinkable and expandable A main body portion, the body portion including an open first end and a closed second end and surrounding the longitudinal end of the vehicle shaft for a predetermined length; And a pressing member for pressing the circumference of the first end of the main body in the inward direction to closely contact the longitudinal end of the vehicle shaft with the inner surface of the first end of the main body.

In addition, the main body portion is preferably made of rubber.

In addition, the main body portion is characterized in that it comprises a rim groove in which at least a portion of the pressing member is seated on the outer peripheral surface of the first end.

In addition, preferably, the O-ring provided on the inner surface of the first end of the main body portion; characterized in that it further comprises.

In addition, preferably, the inner surface of the main body portion is characterized in that the recess is provided with the O-ring is provided.

Preferably, the main body portion includes a rim groove in which at least a portion of the pressing member is seated on the outer circumferential surface of the first end, wherein the concave groove and the rim groove have a center plane of the rim groove in the concave groove. It is characterized in that it is formed to be disposed on the plane in which it is located.

In addition, preferably, two pressing members are included, and the main body portion includes two edge grooves on which at least a portion of the two pressing members are seated on the outer circumferential surface of the first end, and the concave groove and the two The edge groove is characterized in that the center plane of the concave groove is formed between the center plane of the two edge grooves.

Further, preferably, on the inner side surface of the first end of the main body portion, a release prevention jaw for preventing separation of the O-ring from at least one end surface of the first end direction surface and the second end direction surface of the concave groove. It is characterized by further comprising.

In addition, preferably, the inner surface of the first end of the main body portion, characterized in that the convex portion protruding in the inner radial direction integrally with the inner surface is provided.

Further, preferably, the pressing member is an annular elastic member connecting both ends of the tension spring.

According to the above-described means for solving the problem, the present invention can minimize the paint failure rate during the painting process of the vehicle shaft by ensuring that the longitudinal one end and / or both ends of the longitudinal direction of the vehicle shaft is not reliably painted during the painting process.

In addition, the present invention is configured so that the first end of the mask for painting is contractable and expandable in the radial direction and the pressure member is configured to control the opening and closing of the first end, so that the painter paints the mask for painting according to the present invention. Allows easy mounting and / or dismounting of the vehicle shaft of interest.

In addition, according to the present invention, since the main body of the coating mask is made of rubber, the manufacturing cost of the mask, which is a consumable, can be significantly reduced due to repeated use every time during the painting process, and at the same time, the opening and closing of the first end by the pressing member can be easily performed. It can be adjusted to ensure the airtightness of the longitudinal end of the vehicle shaft with high reliability.

 In addition, the present invention includes an edge groove, so that the pressing member can reliably press the first end of the coating mask at a predetermined position, thereby further improving airtightness to the longitudinal end of the vehicle shaft.

In addition, the present invention can more reliably prevent the coating paint from penetrating into the longitudinal end of the vehicle shaft by including the O-ring.

In addition, according to the present invention, the pressing member is constituted by an annular elastic member, so that the operator can easily mount and / or release the pressing member to the main body to facilitate opening and closing of the first end.

1 is a schematic perspective view of a vehicle shaft equipped with a painting mask according to an embodiment of the present invention.
FIG. 2 is a schematic exploded perspective view of FIG. 1. FIG.
3 is a schematic perspective view of a mask for painting according to an embodiment of the present invention.
4 is a schematic exploded perspective view of FIG. 3.
5 is a schematic cross-sectional view of FIG. 3.
6 is a schematic cross-sectional view of a painting mask according to a first additional embodiment.
7 is a schematic cross-sectional view of a mask for painting according to a second additional embodiment.
8 is a schematic cross-sectional view of a painting mask according to a third additional embodiment.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various different forms, and the present embodiments merely make the disclosure of the present invention complete, and are common in the art to which the present invention pertains. It is provided to fully inform those skilled in the art of the scope of the invention, which is to be defined only by the scope of the claims.

Also, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, "comprises" and / or "comprising" does not exclude the presence or addition of components other than the mentioned components.

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used in a sense that can be commonly understood by those skilled in the art.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to describe the present invention in more detail.

1 is a schematic perspective view of a vehicle shaft S equipped with a painting mask 1000 according to an embodiment of the present invention, Figure 2 is a schematic exploded perspective view of Figure 1, Figure 3 is a view of the present invention 4 is a schematic perspective view of a mask 1000 for painting according to an embodiment, FIG. 4 is a schematic exploded perspective view of FIG. 3, and FIG. 5 is a schematic cross-sectional view of FIG. 3.

As shown in Fig. 1 and Fig. 2, the coating mask 1000 according to the present invention comprises a longitudinal end E (one end E1 and E2) and / or of the vehicle shaft S before the painting process. Both ends (E1, E2)) is configured to cover in a sealed manner.

Here, the vehicle shaft S may be axes included in the constant velocity joint assembly.

For example, a general constant velocity joint assembly may include a first shaft that receives driving force from a transmission, a second shaft that receives driving force from the first shaft, and transmits the driving force toward the wheel, the other end of the first shaft, and one end of the second shaft. An inboard side constant velocity joint connecting the part, a third shaft connected to the wheel while receiving driving force from the second shaft, and an outboard connecting the other end of the second shaft and one end of the third shaft The side constant velocity joint is included.

In this case, the second shaft as shown in FIGS. 1 and 2 is commonly referred to as a drive shaft or a half shaft, and the second shaft is generally a hollow shaft or tubular. shaft).

A longitudinal transmission end and / or both longitudinal ends of the first to third axes are provided with a power transmission unit such as a spline, and the power transmission unit is a part to be prevented from painting for power transmission accuracy.

That is, the vehicle shaft S in which the painting mask 1000 according to the present invention is used includes at least one or more of the first to third axes, and the painting mask 1000 according to the present invention is applied. The part which becomes is a power transmission part formed in the longitudinal end E of the said 1st axis-the said 3rd axis | shaft.

For this reason, the present invention prevents the longitudinal end and / or both ends of the longitudinal direction of the vehicle shaft S from being reliably painted during the painting process, so that the painting failure rate and / or the product defect rate during the painting process of the vehicle shaft S is thereby prevented. Can be minimized.

Hereinafter, the coating mask 1000 according to the present invention will be described in more detail with reference to the accompanying drawings.

3 to 5, the mask 1000 for painting according to an embodiment of the present invention includes a main body 100, a pressing member 200, and an O-ring 300.

The body portion 100 is configured to surround the longitudinal end E of the vehicle shaft S to receive a predetermined length.

That is, the main body 100 has a cap shape or a container shape as a whole.

More specifically, the body portion 100 is configured to be elastically retractable and expandable in a radial direction and includes an open first end 101 and a closed second end 102.

The pressing member 200 presses the inner circumferential direction of the first end 101 of the main body 100 in an inner radial direction, so that the longitudinal end E of the vehicle shaft S and the main body 100 of the main body 100 are closed. It is comprised so that the inner surface of the 1st end part 101 may be in close contact.

In this way, the first end 101 of the coating mask 1000 is configured to contract and expand in the radial direction and the pressing member 200 is configured to control the opening and closing of the first end 101, so that the painter The paint mask 1000 according to the present invention can be easily mounted and / or released from the vehicle shaft S to be painted.

Preferably, the body portion 100 may be composed entirely of synthetic rubber.

In addition, according to the present invention, since the main body 100 of the coating mask 1000 is made of synthetic rubber, the manufacturing cost of the mask, which can only be a consumable product due to repeated use every time during the coating process, can be significantly reduced, and at the same time, synthetic rubber Since the elastic deformation allows the opening and closing of the first end 101 due to the pressing member 200 to be easily adjusted, the airtightness of the longitudinal end E of the vehicle shaft S can be secured with high reliability.

In a variant embodiment, the body portion 100 may be made of synthetic resin and / or polymer (for example, plastic).

As a further embodiment, although not shown in the figure, the entire body portion 100 may be made of plastic and may be made of synthetic rubber that only elastically deforms the first end 101.

In this case, the first end 101 may be detachably coupled to the main body 100.

The portion where fatigue is accumulated by shrinking and / or expanding substantially during the coating process is the first end portion 101. When the first end portion 101 is cured (that is, due to the rubber characteristic) due to the rubber characteristic, the first end portion is accumulated. Since only 101 needs to be replaced, the overall life of the coating mask 1000 can be improved as a result.

In addition, the main body 100 includes a rim groove 110 on the outer circumferential surface of the first end 101.

The edge groove 110 is formed concave so that at least a portion of the pressing member 200 is seated.

For example, as shown in Figure 5, the edge groove 110 may be formed in the shape of a square groove.

Preferably, the rim groove 110 may be formed to correspond to the shape of the pressing member 200.

At this time, unlike in Figure 5, the edge groove 110 may be formed as a concave curved surface of the curvature or similar curvature corresponding to this when the pressing member 200 is an annular spring as described below.

By including the rim groove 110, the pressing member 200 can reliably press the first end 101 of the coating mask 1000 at a predetermined position in the longitudinal end (E) of the vehicle shaft (S) ) Can further improve the confidentiality.

The O-ring 300 is provided on the inner side surface of the first end 101 of the body portion 100, the inner side surface of the first end 101 and the longitudinal end portion E of the vehicle shaft S. It is configured to improve the adhesion area and / or adhesion between them.

The O-ring 300 is made of a material having a larger elastic strain (or smaller modulus of elasticity) than the body portion 100.

The O-ring 300 may be preferably composed of synthetic rubber and / or synthetic resin.

By including the O-ring 300 in this way, it is possible to more reliably prevent the coating material from penetrating into the longitudinal end E of the vehicle shaft S. FIG.

In addition, the inner surface of the main body portion 100 is provided with a recessed groove (120).

The concave groove 120 is configured such that the O-ring 300 is seated.

In this embodiment, the concave groove 120 and the rim groove 110 is formed so that the center plane of the rim groove 110 is disposed on the plane where the concave groove 120 is located.

As a result, the body portion 100 may reduce the thickness between the concave groove 120 and the rim groove 110 to form a kind of elastic restoring structure, thereby causing elastic deformation (ie, elastic restoration shrinkage and And / or expansion) can be made easier, so that the first end 101 can be more easily and reliably sealed when pressurized by the pressing member 200.

And, as shown in the figure, the pressing member 200 is composed of an annular elastic member.

The annular elastic member may be formed by connecting both ends of the linear tension spring.

By thus configuring the pressing member 200 as an annular elastic member, the operator can easily mount and / or unmount the pressing member 200 to the main body 100 to facilitate opening and closing of the first end 101. It can be done.

In addition, due to the annular elastic member, the pressing member 200 can generate a uniform inner pressing force over the entire circumference of the first end 101, so that the airtightness due to the elastic contraction of the first end 101 It can be improved uniformly throughout the longitudinal end E of the vehicle shaft.

As a further embodiment, although not specifically shown in the drawings, both ends of the tension spring may have a hook shape.

Furthermore, one end of the hook of the both ends is configured to be opened and closed partly elastically, the side of the hook may be provided with a handle protrusion 140 for easy opening and / or closing. .

As a modified embodiment, although not shown in the drawing, the pressing member 200 is a belt-shaped member, one end of which is overlapped with the other end and fixed to the locking part provided at the other end.

At this time, the pressing member 200, the one end is movable in the direction of convergence toward the other end which is the direction of reducing the diameter of the pressing member 200, while the one end is the diameter of the pressing member 200 It is comprised so that it cannot move to the direction extracted from the other end part which is an increase direction.

That is, the pressing member 200 may be configured in a structure similar to the cable tie, it may be composed of a plastic.

Hereinafter, although most of the components and technical features included in the above-described coating mask 1000 according to the present invention are described as it is, a description will be given of a further embodiment in which some components are added and / or modified. Components and technical features included in the above-described coating mask 1000 will be omitted for clarity.

6 is a schematic cross-sectional view of a painting mask 1000 according to a first additional embodiment.

As shown in FIG. 6, the coating mask 1000 according to the present embodiment includes two pressing members 200 and two edge grooves 110 corresponding thereto.

That is, the main body 100 includes two edge grooves 110 on which the two pressing members 200 are seated on the outer circumferential surface of the first end 101.

The edge groove 110 is formed concave so that at least a portion of the pressing member 200 is seated.

For example, as shown in FIG. 6, the edge groove 110 may be formed in a square groove shape.

Preferably, the rim groove 110 may be formed to correspond to the shape of the pressing member 200.

At this time, unlike in Figure 6, the edge groove 110 may be formed as a concave curved surface of the curvature or similar curvature corresponding to this when the pressing member 200 is an annular spring as described below.

According to the present embodiment, the concave groove 120 and the two edge grooves 110 are formed such that the center plane of the concave groove 120 is disposed between the center planes of the two edge grooves 110. .

In the case of the embodiment according to Figure 5, the concave groove 120 and the rim groove 110 is located on the same plane, so the elastic deformation structure is improved, due to the planar overlap of the concave groove 120 and the rim groove 110 There is a problem that the thickness of the body portion 100 is too thin, there was a risk that the portion between the recessed groove 120 and the edge groove 110 is easily torn.

According to the present embodiment, by arranging the concave groove 120 and the two edge grooves 110 so as not to overlap in a plane, the thickness of the portion between the concave groove 120 and the edge groove 110 can be increased. In addition to preventing the shear phenomenon, due to the pressing force by the two pressing members 200 it can also prevent the reduction of the elastic strain for the embodiment of FIG.

7 is a schematic cross-sectional view of a painting mask 1000 according to a second additional embodiment.

As shown in FIG. 7, the separation prevention protrusion 130 may be integrally provided at the inner inlet of the concave groove 120.

In detail, the release preventing projection 130 is formed on the inner end surface of the first end 101 of the main body 100 of the first end direction surface of the concave groove 120 (in Fig. 7 of the concave groove 120). It may be formed on at least one end surface of the upper surface) and the second end surface (the lower surface of the recess 120 in Figure 7).

The departure prevention jaw is formed to have a similar curvature or the same curvature as the concave groove as shown in FIG.

Preferably, the separation preventing projection 130 may be essentially provided on the second end direction surface (the lower surface of the concave groove 120 in FIG. 7).

Due to this separation prevention barrier 130, when the coating mask 1000 to which the O-ring 300 is coupled is mounted to the longitudinal end E of the vehicle shaft S and / or the coating mask 1000 is When released from the longitudinal end E of the vehicle shaft S, the o-ring 300 is pushed out of the concave groove 120 due to the frictional force between the inner diameter surface of the O-ring 300 and the surface of the longitudinal end E. It can surely prevent the deviating from.

8 is a schematic cross-sectional view of a painting mask 1000 according to a third additional embodiment.

As shown in FIG. 8, the coating mask 1000 according to the present exemplary embodiment includes a convex portion instead of the O-ring 300, which is a separate independent component.

Specifically, the convex portion is provided on the inner side surface of the first end 101 of the main body portion 100.

The convex portion protrudes in an inner radial direction integrally with the inner side surface of the first end 101.

That is, the convex portion is configured to serve as a packing member similarly to the O-ring 300.

According to the present embodiment, since the airtightness and hermeticity can be maintained without the O-ring 300 which is a separate part, it is possible to maintain the effect of minimizing the paint failure rate while reducing the overall manufacturing cost of the coating mask 1000.

As described above, the present invention has been described with reference to the embodiments shown in the drawings, but it is only for the purpose of describing the present invention, and those skilled in the art to which the present invention pertains various modifications or equivalents from the detailed description of the invention. It will be appreciated that one embodiment is possible.

Therefore, the true scope of the present invention should be determined by the technical spirit of the claims.

S: car shaft
E1, E2: longitudinal ends
1000: Painting Mask
100: main body
101: first end
102: second end
110: border groove
120: concave groove
130: release prevention jaw
140: protrusion
200: pressure member
300: O-ring

Claims (10)

A mask for painting a vehicle shaft that prevents painting of a longitudinal end portion of the vehicle shaft in a painting process of a vehicle shaft,
A body portion configured to radially contract and expand and include an open first end and a closed and closed second end, the body portion enclosing the longitudinal end of the vehicle shaft for a predetermined length;
And a pressing member pressing the circumference of the first end of the main body in the inward direction to closely contact the longitudinal end of the vehicle shaft with the inner surface of the first end of the main body.
The main body is made of rubber,
The main body includes a rim groove in which at least a portion of the pressing member is seated on the outer circumferential surface of the first end. In this case, the first end of the main body portion is provided so as to pressurize,
An o-ring provided on an inner surface of the first end of the main body;
It is formed on the inner side of the main body portion further comprises a concave groove on which the O-ring is seated,
The body portion is provided to reduce the thickness between the concave groove and the rim groove to form an elastic restoration structure,
And the pressing member is disposed over the entire circumference of the first end to generate a uniform inner pressing force. delete delete delete delete The method of claim 1,
The main body portion includes a rim groove in which at least a portion of the pressing member is seated on the outer peripheral surface of the first end,
The concave groove and the rim groove, the mask for painting a vehicle shaft, characterized in that the center plane of the rim groove is formed on the plane where the concave groove is located. The method of claim 1,
Two pressing members are included,
The main body portion includes two edge grooves on which at least a portion of the two pressing members are seated on the outer circumferential surface of the first end portion,
The concave groove and the two rim grooves, the mask for painting a vehicle shaft, characterized in that the center plane of the concave groove is formed between the center plane of the two rim grooves. The method of claim 1,
The inner side surface of the first end of the main body portion, characterized in that it further comprises a release prevention preventing the separation of the O-ring from at least one end surface of the first end direction surface and the second end direction surface of the concave groove. Mask for the painting of the vehicle shaft to say. The method of claim 1,
The inner surface of the first end of the main body portion, the convex portion protruding in the inner radial direction integrally with the inner surface is provided, the mask for painting a vehicle shaft. The method of claim 1,
The pressing member is a mask for painting a vehicle shaft, characterized in that the annular elastic member connecting both ends of the tension spring.

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