KR102619149B1 - Coupler for automobiles with composite vibration reduction and insert member separation prevention structure - Google Patents

Abstract

The present invention relates to a coupler for an automobile having a structure for reducing complex vibration and preventing separation of an insert member, and more specifically, to a coupler body having a plurality of insert portions arranged radially; A first insert member inserted into each insert part of the coupler body and having a hollow shape; a second insert member inserted into each insert portion of the coupler body, spaced apart from the first insert member, and having a hollow shape; an insertion portion formed on a space space between the first insert member and the second insert member; a composite tensioner disposed in the insertion portion and configured to attenuate vibration and noise caused by an engine side load; and a separation prevention portion formed on the circumferential surface of the first insert member or the second insert member, or the first insert member and the second insert member.
In other words, the present invention maximizes the absorption and attenuation function for shock and vibration such as gear shifting and road surface irregularities by introducing a separated insert member and a composite tensioner in this insert member, thereby improving durability and quietness, and improving the durability and quietness of the steel material. A separation prevention part in the form of a protrusion or groove is formed on the outer diameter of the insert member to prevent the insert member from separating from the coupler body, which is made of a different material, even during high-speed rotation and impact, thereby reducing composite vibration and improving the reliability of the insert member. We would like to propose an automobile coupler with a breakaway prevention structure.

Description

Coupler for automobiles with composite vibration reduction and insert member separation prevention structure}

The present invention maximizes the absorption and damping function for shock and vibration such as gear shifting and road surface irregularities by introducing a separated insert member and a composite tensioner in this insert member, thereby improving durability and quietness, and improving the durability and quietness of steel materials. By forming a separation prevention part in the form of a protrusion or groove on the outer diameter of the insert member to prevent the insert member from separating from the coupler body, which is made of a different material, even during high-speed rotation and impact, complex vibration reduction and separation of the insert member can increase the reliability of the product. This relates to an automobile coupler with an anti-blocking structure.

Typically, the transmission coupler plays a key role in the power transmission function of connecting the front axle and the rear axle in the process of transmitting engine power to the wheels by adjusting the speed through the transmission.

It has a functional specificity that must satisfy both safety and convenience by absorbing and attenuating the shifting shock and vibration that occurs when shifting gears using such a transmission, and the shock and vibration that occurs when adjusting and monitoring speed by an accelerator.

In addition, the car body may shake violently while driving due to road conditions such as road surface irregularities. Although the shock is absorbed and attenuated by the speed absorber in proportion to the size of the shock transmitted to the front, left, and right wheels, the shock and deformation factors transmitted to the axle are reduced. You can't do it.

At this time, the transmission coupler performs the function of attenuating the deformation factor caused by road impact transmitted to the axle.

Therefore, the function and performance of the transmission coupler can be said to be a key functional part with such a large importance that it can be said to be an important factor in determining the driving stability and interior quietness of a car.

In particular, it is a connecting part of the axle for transmitting the power of a car, and is a very important and safety-requiring special part that directly leads to a situation in which driving is impossible when a problem occurs.

In this conventional transmission coupler, as shown in FIG. 5, an insert member 9 in the shape of a simple pipe is inserted into the coupler body made of rubber through injection molding.

In this case, a plate (7) with bolt holes is provided at the adjacent ends of the front axle (1) and the rear axle (3), and a bolt (B) is fastened through the bolt hole of this plate and the hollow of the insert member (9). As this happens, the front axle (1) and the rear axle (3) are fastened and coupled.

In the case of the existing transmission coupler configured in this way, the insert member is a simple circular pipe-type steel insert and the front axle (1) and the rear axle (3) are directly connected and fastened by inserting and fastening the bolt (5), thereby eliminating gear shifting shock, vibration, There was a problem of not being able to perform its original function due to structural limitations due to shock and deformation factors caused by the curvature of the road surface.

In addition, due to a critical structural combination that causes the insert member (9) to separate from the rubber coupler body (10) during high-speed rotation, shock and vibration cannot be absorbed and are transmitted to the axle, shortening the life of the axle. There was a problem in that shifting shock and noise were transmitted directly to the passengers, causing discomfort.

Japanese Patent Application Laid-Open No. 8-273743 (published on October 18, 1996)

The present invention was created to solve the problems described above,

By introducing separate insert members and a composite tensioner into these insert members, the absorption and damping functions for shock and vibration such as gear shifting and road surface irregularities are maximized, and durability and quietness are improved through this. By forming a separation prevention part in the form of a protrusion or groove on the outer diameter to prevent the insert member from separating from the coupler body, which is made of different materials, even during high-speed rotation and impact, the complex vibration reduction and separation prevention structure of the insert member can increase the reliability of the product. The purpose is to provide a coupler for automobiles.

An automobile coupler with a complex vibration reduction and insert member separation prevention structure according to the present invention includes a coupler body having a plurality of insert portions arranged radially; A first insert member inserted into each insert part of the coupler body and having a hollow shape; a second insert member inserted into each insert portion of the coupler body, spaced apart from the first insert member, and having a hollow shape; an insertion portion formed on a space space between the first insert member and the second insert member; a composite tensioner disposed in the insertion portion and configured to attenuate vibration and noise caused by an engine side load; and a separation prevention portion formed on the circumferential surface of the first insert member or the second insert member, or the first insert member and the second insert member.

The composite tensioner according to the present invention includes a first tensioner disposed in the insertion portion to reinforce axial rigidity with respect to the first and second insert members, and a second tensioner disposed in the insertion portion and connected to the coupler body. It is characterized by comprising:

The separation prevention part according to the present invention is formed in the form of a protrusion or a groove, and the protrusion or the groove is formed continuously or discontinuously.

The first insert member and the second insert member according to the present invention are further provided with a non-contact overlapping part based on the insertion part.

A tightening band is further provided to surround and tighten the outer peripheral surface of the coupler body according to the present invention.

The automobile coupler with a composite vibration reduction and insert member separation prevention structure according to the present invention has a separated insert member and a composite tensioner introduced into this insert member, thereby absorbing and damping shock and vibration such as gear shifting and road surface irregularities. This maximizes durability and quietness, and forms a separation prevention part in the form of a protrusion or groove on the outer diameter of the steel insert member to prevent the insert member from separating from the coupler body, which is made of a different material, even during high-speed rotation and impact. By doing so, the reliability of the product can be increased.

In addition, the present invention has excellent environmental protection in that it is stable not only during high-speed rotation, but also against changes in climate and temperature, so durability can be doubled, and power transmission is possible even in the event of a breakdown, allowing self-movement for repairs. In this respect, it has the advantage of ensuring safety.

1 is a cross-sectional view showing an automobile coupler with a complex vibration reduction and insert member separation prevention structure according to the present invention;
Figure 2 is a cross-sectional view showing a first embodiment of the transmission coupler according to the present invention;
Figure 3 is a cross-sectional view showing another embodiment of the transmission coupler according to the present invention;
Figure 4 is a cross-sectional view showing the application state of the transmission coupler according to the present invention;
Figure 5 is a cross-sectional view showing the operating state of a conventional transmission coupler;

In order to explain the present invention, its operational advantages, and the purpose achieved by practicing the present invention, preferred embodiments of the present invention are illustrated and discussed with reference to the following.

First, the terms used in this application are only used to describe specific embodiments and are not intended to limit the present invention, and singular expressions may include plural expressions unless the context clearly indicates otherwise. In addition, in the present application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other It should be understood that this does not exclude in advance the presence or addition of features, numbers, steps, operations, components, parts, or combinations thereof.

In describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description will be omitted.

As shown in Figures 1 to 3, the automobile coupler with complex vibration reduction and insert member separation prevention structure according to the present invention includes a coupler body (10), a first insert member (20), and a second insert member (30). , an insertion portion 40, a composite tensioner 50, and a separation prevention portion 60.

As shown in Figures 1 to 3, the coupler body 10 according to the present invention connects the front axle 1 and the rear axle 3 to protect against shocks that occur in various situations such as gear shifting, road surface conditions, and climate environments. It is configured to absorb and attenuate vibration and noise.

To this end, it is desirable to use an appropriate material for the coupler body 10 that satisfies the requirements of the tensioner, such as heat resistance, wear resistance, and coefficient of elasticity of return, such as EPDM or silicon.

Rubber molding manufacturing method can be used for the coupler body 10 due to the nature of the material, and it is desirable to increase the crystallinity by reflecting the characteristics of the melting point and melt index of each material during the molding process to provide durability and impact resistance.

The coupler body 10 molded in this way is formed as a whole in a hexagonal shape, and in this case, it is composed of the first and second insert members 20 and 30, a composite tensioner 50, and a separation prevention portion 60 to form a front Six clamp inserts can be placed to fasten the axle (1) and the rear axle (3) with bolts (5). In this case, the adjacent ends of the front axle 1 and the rear axle 3 are formed to correspond to the hollow H of the first and second insert members to be described later, as shown in FIG. 4, to accommodate the bolt B. A plate 7 with bolt holes is connected.

However, the shape of the coupler body 10 is not limited to this and may be composed of a polygonal shape or a circular shape, and clamp inserts can be manufactured in numbers corresponding to the shape.

In addition, as described above, the coupler body 10 is provided with a corresponding number of insert parts 11 so that clamp inserts can be installed to connect the front axle 1 and the rear axle 3 by fastening bolts 5. is provided in the form of a hall.

As shown in Figures 1 to 3, the first and second insert members 20 and 30 according to the present invention are separated from each other, unlike the insert member 9 (see Figure 5) of a single cylindrical shape in the existing coupler. It is made up of a shape.

That is, the first insert member 20 is inserted into the upper part of the insert portion 11 of the coupler body 10 based on the attached illustration of FIG. 2, and the second insert member 30 is inserted into the insert portion of the coupler body 10. (11) Can be placed at the bottom. In this case, the upper and lower positions of the insert portion 11 may be in the right or left direction depending on the arrangement direction of the coupler body 10.

In addition, the first and second insert members 20 and 30 are made in the form of a hollow (H) and are inserted into the insert portion 11 of the coupler body 10, and are inserted into the front axle through the hollow H of each insert member. A bolt (5) is inserted through to connect (1) and the rear axle (3).

In this case, the first and second insert members 20 and 30 are formed in a separate structure to improve shock absorption performance, and insertion portions 40 are formed in spaces spaced apart from each other. In this case, the first insert member 20 is configured such that the inner diameter of the lower part is larger than the inner diameter of the upper part, and an expanded protrusion 21 protruding downward is formed in the lower part. In addition, the second insert member 30 is configured such that the outer diameter of the upper portion is smaller than the outer diameter of the lower portion, and a reduced protrusion 31 protruding upward is formed in the upper portion.

Therefore, when the first and second insert members 20 and 30 are disposed at the top and bottom of the insert portion 11, the space between the expanded protrusion 21 of the first insert member and the reduced protrusion 31 of the second insert member An insertion portion 40 as described above may be formed thereon.

In this case, a non-contact overlapping part (OL) is formed by the expansion protrusion 21 and the reduction protrusion 31, and the insertion part 40, which is the space between them, and the insertion part 40 includes the first tensioner 51 and A second tensioner 53 is disposed. Therefore, the non-contact overlap portion (OL) can provide a damping effect not only in the axial direction but also in the torsional direction.

In this way, the first insert member 20 and the second insert member 30 are arranged separately from each other, and the composite tensioner 50 is inserted into the insertion portion 40 formed in the space space between each insert member.

Therefore, compared to the case of a simple circular pipe-type structure such as the existing insert member 9 (see FIG. 5), not only can it respond more effectively to shock or vibration applied in the axial direction, but also The shock absorption performance can be further doubled by the composite tensioner 50 disposed.

That is, in the case of the existing insert member 9, as shown in FIG. 5, the bolt 5 is inserted and fastened with a simple circular pipe-type steel insert to directly connect and bind the front axle 1 and the rear axle 3 to reduce the impact of gear shifting. However, there was a problem in that it could not perform its original function due to structural limitations due to shock and deformation factors such as vibration and road surface curvature.

In addition, in severe cases, the insert member (9) may be separated from the coupler body (10), which is a fatal structural combination that does not absorb shock and vibration and is transmitted to the axle, shortening the life of the axle and causing shifting shock or shock. There was a problem that noise was transmitted directly to the passengers, causing discomfort.

In the present invention, as described above, the existing insert members (9) are separated and spaced apart from each other to provide a shock absorption function to compensate for the structural defect of the existing insert member (9), and at the same time, each insert member (20) (30) ) to double the shock absorption function by placing the composite tensioner (50) in the insertion part (40), which is the space between them, and also to separate the coupler body (10), which is made of rubber material, from the insert members (20) and (30). To prevent this, a separation prevention part 60 is introduced into each insert member 20 and 30 to prevent each insert member 20 and 30 from being separated from the coupler body 10.

Hereinafter, the composite tensioner 50 and the separation prevention unit 60 according to the present invention will be described in more detail with reference to the attached drawings.

As shown in Figures 1 to 3, the composite tensioner 50 according to the present invention is disposed in the insertion part 40 and is configured to attenuate vibration and noise in response to the engine side load.

More specifically, the composite tensioner 50 includes a first tensioner 51 disposed in the insertion portion 40 to reinforce rigidity in the axial direction with respect to the first and second insert members 20 and 30, and an insertion portion It consists of a second tensioner (53) disposed at (40) and connected to the coupler body (10).

First, the first tensioner 51 of the composite tensioner 50 is configured in a disk shape and is placed in the uppermost space of the insertion portion 40 based on the illustrations of FIGS. 2 and 3. That is, the first tensioner 51 is disposed in contact with the upper surface of the reduced protrusion 31 of the second insert member and the lower surface of the upper portion of the first insert member 20.

Next, the second tensioner 53 of the composite tensioner 50 is formed by resin flowing into the insertion portion 40 during molding of the coupler body 10, that is, during rubber molding, so that it is connected to the coupler body 10. It is composed.

The material of the first and second tensioners 51 and 53 constructed as described above is made of engineer plastic (urethane, EVA, unsaturated polyester, Nylon-6), which has heat resistance, wear resistance, and rebound elasticity. It can be constructed from an appropriate material that meets the requirements of the tensioner, including coefficients. In addition, as described above, the second tensioner 53 is preferably made of an appropriate material that satisfies the requirements of the tensioner, such as heat resistance, wear resistance, and coefficient of elasticity of return, such as EPDM or silicone.

The composite tensioner 50 according to the present invention, that is, the first and second tensioners 51 and 53, operates in response to the engine side load (moment of inertia, rotation moment, and torsion moment), such as starting, sudden start, sudden braking, and gear shifting. It plays a role in attenuating vibration and noise that affect both small vibrations and large loads.

In addition, it serves as a guide for each insert member 20 and 30 to help smooth operation within the yield point.

In particular, in the case of the first tensioner 51, the first insert member 20 and the second insert member 30 are arranged in the axial direction so that the lower surface of the upper part of the first insert member 20 and the second insert member ( It is disposed between the upper surfaces of the reduced protrusions 31 of 30). This means that when the first tensioner 51 is made of the same rubber material as the second tensioner 53, the structural shape between the first insert member 20 and the second insert member 30 is not maintained during axial movement. It is to solve the problem. Therefore, in the case of the first tensioner 51, it is preferably made of an engineer plastic material as described above and has rigidity to maintain the structural shape between the first insert member 20 and the second insert member 30.

As shown in Figures 1 to 3, the separation prevention part 60 according to the present invention includes the first insert member 20 or the second insert member 30, or the first insert member 20 and the second insert member 30. It is formed on the circumferential surface of the insert member 30 and is configured to prevent each insert member from being separated from the coupler body 10.

The separation prevention unit 60 according to the present invention is to prevent each insert member from being separated from the coupler body 10 due to gear shifting, gear shifting, road impact, and centrifugal force caused by high-speed rotation.

That is, the separation prevention portion 60 may be formed along the outer circumferential surface of the first and second insert members 20 and 30, as shown in FIGS. 2 and 3. In this case, the separation prevention part 60 is formed in the form of a protrusion 61 as shown in FIG. 2 or a groove 63 as shown in FIG. 3, but the protrusion 61 or the groove 63 is continuous or irregular. It is also possible to form continuously.

When the protrusions 61 or grooves 63 of the separation prevention portion 60 configured in this way are formed continuously along the circumferential surface, they have a certain resistance to mainly axial loads, but have some resistance to torsional or rotational loads. This may be insufficient.

In response to this, if the projections 61 or grooves 63 of the separation prevention portion 60 are formed discontinuously along the circumferential surface, that is, in the form of multiple projections, ribs, or grooves, not only the axial load but also the torsion or grooves are formed. In that it can efficiently resist rotational loads, it has the advantage of increasing the effect of preventing separation and separation between the coupler body 10 and each insert member.

Although the separation prevention portion 60 configured as described above is not shown in the accompanying drawings, it is possible to be formed only on the first insert member 20 or the second insert member 30. However, in this case, in the case of the insert member in which the separation prevention portion 60 is not formed, the first and second insert members 20 may be separated from the coupler body 10, as shown in Figures 2 and 3 attached. ) It is desirable to form separation prevention parts 60 on all of 30 to prevent each insert member from being separated from the coupler body 10.

As described above, when the first and second insert members 20 and 30, the composite tensioner 50 and the separation prevention unit 60 are mounted on the insert portion 11 of the coupler body 10, the coupler body ( It is also preferable that a tightening band 70 is provided as shown in FIG. 1 to wrap around and tighten the outer surface of the coupler body 10 so that the 10) and its internal parts can be restrained as a single body.

This tightening band 70 is preferably made of a steel band to increase the binding force, and the tightening band 70 is fastened to the outer surface of the coupler body 10 using a fastening tool such as a clamp, and the fastening is released. It is desirable to be able to do so.

As such, the present invention has been described with reference to an embodiment shown in the drawings, but this is merely illustrative, and various modifications and other equivalent embodiments can be made by those skilled in the art. You will understand.

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

H: hollow
1: Front axle 3: Rear axle
5: Bolt 7: Plate
10: Coupler body
11: Insert part
20: first insert member
21: extended protrusion
30: second insert member
31: reduced protrusion
40: insertion part
50: Composite tensioner
51: first tensioner 53: second tensioner
60: Breakaway prevention unit
61: projection 63: groove
70: Tightening band

Claims (5)

A coupler body (10) having a plurality of insert portions (11) arranged radially;
A first insert member (20) inserted into each insert portion (11) of the coupler body (10) and having a hollow (H) shape;
A second insert member (30) inserted into each insert portion (11) of the coupler body (10), spaced apart from the first insert member (20), and having a hollow (H) shape;
an insertion portion 40 formed in the space between the first insert member 20 and the second insert member 30;
A composite tensioner (50) disposed in the insertion portion (40) to attenuate vibration and noise caused by engine side load; and
A separation prevention portion 60 formed on the circumferential surface of the first insert member 20 or the second insert member 30, or the first insert member 20 and the second insert member 30; This is done including,
The first insert member 20 and the second insert member 30 are further provided with a non-contact overlapping part (OL) based on the insertion part 40,
The composite tensioner 50 includes a first tensioner 51 disposed in the insertion portion 40 to reinforce axial rigidity with respect to the first and second insert members 20 and 30;
An automotive coupler with a complex vibration reduction and insert member separation prevention structure, comprising a second tensioner (53) disposed in the insertion portion (40) and connected to the coupler body (10).
delete According to claim 1,
The separation prevention part 60 is formed in the form of a protrusion 61 or a groove 63,
An automobile coupler with a complex vibration reduction and insert member separation prevention structure, characterized in that the protrusion (61) or the groove (63) is formed continuously or discontinuously.
delete According to claim 1,
An automotive coupler with a complex vibration reduction and insert member separation prevention structure, characterized in that it is further provided with a tightening band (70) for wrapping and tightening the outer peripheral surface of the coupler body (10).