KR20120012205A - Mount bush of stabilizer bar for vehicle - Google Patents

Abstract

PURPOSE: A mount bush of a stabilizer bar for a vehicle is provided to reduce the noise and the friction using a sliding bearing for improving the fuel efficiency of the vehicle. CONSTITUTION: A mount bush of a stabilizer bar for a vehicle includes an insert(110), a sliding member(130), a rubber bush(160), and a mounting bracket(140). The insert is directly formed on the fixing area of on the outer surface of the stabilizer bar(102) by extruding. The sliding member is formed with upper and lower members(131,132), and combines with the outer circumference of the insert with a lubricant layer. The rubber bush is formed with upper and lower rubber members(161,162) for surrounding the outer peripheral side of the sliding member. The mounting bracket surrounds the rubber bush and is fixed to a sub-frame.

Description

MOUNT BUSH OF STABILIZER BAR FOR VEHICLE}

The present invention relates to a mount bush of a stabilizer bar applied to a suspension device of a vehicle, and more particularly, by using a sliding bearing structure to reduce noise and friction, which is a chronic problem, to increase the merchandise and fuel economy of a vehicle, and to provide foreign substances therein. The present invention relates to a mount bush of an automobile stabilizer bar capable of preventing penetration and deterioration of a sliding bearing.

The stabilizer bar, which is applied to an independent suspension of a vehicle, is a torsion spring that maintains the balance of the vehicle body by suppressing the roll motion of the vehicle body when turning or driving on rough roads.

Looking at the first configuration of the stabilizer bar, as shown in Figure 1, the stabilizer bar (2) has a lower control arm (8) (10) or through the control link (4) (6) at each end thereof, respectively; It is connected to the strut assembly 12, 14, and both sides of the straight portion inside thereof are fixed to the subframe 16 via the mounting bushes 18 and 20.

The stabilizer bar 2 has an auxiliary spring function for supporting the left and right wheels generated when the vehicle body is being rolled, and does not receive force when the left and right wheels move in phase, and when moved in reverse phase, left and right by torsional elastic force. By restraining the movement of the wheel serves to suppress the roll behavior of the vehicle body.

For example, when the turning outer wheel is bound and the turning inner wheel rebounds when turning, the movement of both wheels is made equal to suppress the inclination of the vehicle body. It will not work.

In addition, the mounting bushes 18 and 20 for fixing both sides of the straight portion of the stabilizer bar 2 to the subframe 16 are typically mounted with a lubricating bush type mount bush shown in FIG. A saddle bush type mount bush shown in B is employed.

 The lubrication bush type mount bush is composed of a bracket 22 and a rubber bush 24 to which a lubricating component is added, as shown in A of FIG. 2, so that the bracket 22 surrounds the rubber bush 24. It is fixed to the vehicle body or subframe 16.

In addition, the stabilizer bar (2) having a circular cross section is fixed to the center portion of the rubber bush (24) to block the noise or vibration caused by the behavior of the stabilizer bar (2), the rubber bush (24) ) Has a great influence on the roll stiffness depending on the size of the compressive force on the stabilizer bar 2.

And the saddle stitch bush type mount bush is made of a bracket 22 and a rubber bush 24, as in the lubrication bush type mount bush, as shown in B of Figure 2, the saddle stitched inside the rubber bush (24) The bush 26 is inserted into the structure so that slip does not occur during rotation of the stabilizer bar 2.

However, in the lubrication bush type mount bush, as shown in FIG. 3A, slip occurs after the deformation of the rubber bush occurs in the initial approximately 2 to 3 ° section during rotation of the stabilizer bar.

As described above, the occurrence of slip means noise generation, and includes a problem that the noise increases as the rubber ages.

In addition, the saddle-stitch bush-type mount bush has a structure without slip as shown in B of FIG. 3, but the noise problem may be solved. There is a problem.

Therefore, the present invention has been invented to solve the above problems, the object of the present invention by using a sliding bearing structure to reduce the noise and friction, which is a chronic problem, to increase the merchandise and fuel economy of the car, foreign matter penetrates into the interior The present invention relates to a mounting bush of an automobile stabilizer bar that can prevent the performance of a sliding bearing from being deteriorated.

In order to realize the above object, in the present invention, as in claim 1, in forming the mount bush 100 for fixing both sides of the straight portion of the stabilizer bar 102 to the sub-frame (car body) 104,

An insert 110 which is directly injection-molded at the fixed portion of the stabilizer bar 102;

A sliding member (130) consisting of upper and lower members (131, 132) coupled to the outer circumferential surface of the insert (110) with a lubricating layer;

A rubber bush 160 coupled to the upper and lower rubber members 161 and 162 so as to surround the outer circumferential side of the sliding member 130;

It provides a mounting bush of a vehicle stabilizer bar including a mounting bracket 140 is fixed to the sub-frame (car body) while wrapping the rubber bush (160).

In the insert 110 is injection molded directly to the outer peripheral surface of the stabilizer bar 102 with a certain length as in claim 2, the flanges 111 and 112 of large diameter are formed at both ends, A plurality of circumferential jaws 113, 114, 115, 116 are formed between the flanges 111, 112, so that the circumferential jaws 117, 118, 119 are formed accordingly. do.

The stabilizer bar 102 is characterized in that the knurling process is made on the outer peripheral surface for the coupling force with the insert 110, as in claim 3.

In the sliding member 130 as described in claim 4, the outer shell 133, 134 made of metal and the filler 135 filled with a plastic material on the inner diameter of the outer shell (133, 134) ( It is characterized by consisting of the upper and lower members 131, 132 constituted by 136.

Filler 135, 136 and the circumferential grooves (138, 140) corresponding to the flanges (111, 112) formed on both sides of the insert 110 in the inner diameter as in claim 5 and Perimeter jaws 142 and 144 corresponding to the perimeter grooves 113 and 116 are formed, and the three perimeter jaws 117 and 118 of the insert 110 are disposed between the perimeter jaws 142 and 144. One large circumferential groove 146 is formed to accommodate the 119.

In the sliding member 130 is coupled to both ends of the outer shell 133, 134 and the fillers 135, 136 of the upper and lower members 131, 132, as in claim 6, Both ends of the outer shell 133 and 134 are bent inward in the longitudinal direction and then bent to the outer diameter side so that their ends are buried by the fillers 135 and 136.

In the sliding member 130 as described in claim 7, the upper and lower members 131, 132 of the outer shell 133, 134 and the fillers 135, 136, both ends of the coupling, the outer shell Both ends of the 133 and 134 are bent outward by a predetermined length in the longitudinal direction, and then their ends are buried by the fillers 135 and 136.

The inner surface of the outer shell 133, 134 is characterized in that the knurling process is made on the outer peripheral surface for the coupling force with the fillers 135, 136 as in claim 8.

According to the present invention configured as described above, the insert 110 is produced in a manner that is injected directly to the stabilizer bar 102, serves to prevent the departure of the stabilizer bar 102, a plurality of peripheral grooves By being coupled with the sliding member 130 by the (113) 114, 115, 116 and the circumferential jaw 117, 118, 119, it is possible to prevent the sliding member 130 from being separated.

And the grease which is a lubricant is filled between the insert 110 and the sliding member 130, it is possible to minimize the friction of the entire behavior section, it is possible to prevent the generation of noise by minimizing the starting torque section.

In addition, since the insert 110 and the sliding member 130 are made of a plastic injection molding, tolerance management and assemblability are improved.

In addition, since the flanges 111 and 112 formed at both ends of the insert 110 serve as a sealer, it is possible to prevent foreign substances from penetrating and leaking grease, thereby preventing the performance degradation of the sliding member 130. do.

In addition, the thickness of the rubber member can be reduced by the above configuration, so that the curing effect of the rubber member due to the aging of the rubber member is also reduced to reduce the occurrence of noise.

These drawings are for reference in describing exemplary embodiments of the present invention, and the technical spirit of the present invention should not be construed as being limited to the accompanying drawings.
1 is a plan view showing an example of a general independent suspension for explaining the application of the present invention.
2A and 2B are sectional views showing an embodiment of a general stabilizer bar mount bush.
FIG. 3 is a cross-sectional view for explaining a change in minute portions of the I and II portions of FIGS. 2A and 2B. FIG.
4 is a partially cutaway perspective view of the mount bush according to the present invention;
5 is an exploded perspective view of the upper and lower buffer member of the mount bush according to the present invention.
6 is an assembled cross-sectional view of the mount bush according to the present invention.
FIG. 7 is an enlarged view of part III of FIG. 6;
FIG. 8 is another exemplary diagram of part III of FIG. 6.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Parts not related to the description are omitted in order to clearly describe the present invention, and the same reference numerals are used to designate the same or similar elements throughout the specification.

4 to 6 illustrate one embodiment of a mount bush of a stabilizer bar according to the present invention, where reference numeral 100 denotes the entire mount bush.

4 to 6, the mount bush 100 includes an insert 110, a sliding member 130, a rubber bush 160, and a mounting bracket 170.

The insert 110 is made of a plastic material as a cylindrical member, and is directly injection-molded at the outer circumference of the predetermined position of the stabilizer bar 102 to be mounted.

Large diameter flanges 111 and 112 are formed at both ends of the insert 110, and a plurality of peripheral grooves 113, 114, 115 and 116 are formed between the flanges 111 and 112. As a result, a plurality of peripheral jaws 117, 118, and 119 are formed.

In the drawings of the present invention, four peripheral grooves 113, 114, 115, 116 and three peripheral jaws 117, 118, 119 are formed, but are not limited thereto.

In addition, in forming the circumferential grooves 113, 114, 115, and 116, the widths of the two circumferential grooves 113 and 116 of both sides are equal to that of the two circumferential grooves 114 and 115 positioned in the center. It was formed relatively larger than the width.

The reason for the different widths for the circumferential grooves 113, 114, 115, and 116 as described above will be described later.

The sliding member 130 is composed of upper and lower members 131 and 132 having a semi-cylindrical shape.

The upper and lower members 131 and 132 are made of shells 133 and 134, and fillers 135 and 136 filled in the shells 133 and 134.

The shell 133, 134 is made of a metal, the inner filler (135, 136) is a plastic, injection molded in the interior of the shell (133, 134).

In the inner diameter portions of the inner fillers 135 and 136, peripheral grooves 138 and 140 and peripheral grooves 113 and 116 corresponding to flanges 111 and 112 formed on both sides of the insert 110 are formed. The circumferential jaws 142 and 144 corresponding to the ones are formed, and one large circumferential groove 146 is formed between the circumferential jaws 142 and 144 to form three circumferential jaws 117, 118 and 119. Will be accepted.

In addition, the upper and lower members 131 and 132 are unevenly coupled to prevent tolerances and flow. In the present invention, as shown in FIG. 5, the coupling protrusions are coupled to the assembly surface 148 of the upper member 131. A 150 is formed, and coupling grooves 154 are formed in the assembly surface 152 of the lower member 132 so that mutual concavities and convexities are formed.

However, the present invention is not limited thereto. On the contrary, the coupling protrusion 150 may be formed on the lower member 132, and the coupling groove 154 may be formed on the upper member 131.

When the sliding member 130 is coupled to the outside of the insert 110, both the insert 110 and the internal filler 135 and 136 are made of plastic, and the friction force is minimized to rotate. In particular, since the center circumferential grooves 114 and 115 of the insert 110 are filled with grease as a lubricant, frictional force is further minimized.

In addition, the flanges 111 and 112 of the insert 110 are coupled to the circumferential grooves 138 and 140 to maintain complete sealing performance, so that grease inside is not leaked, and foreign matter flows into the inside. You can prevent that.

In the coupling of the insert 110 and the sliding member 140, the concave-convex coupling is made by the circumferential groove and the circumferential jaw to precisely couple the coupling accuracy, and the rigid coupling can be made in the vertical direction. To make it work.

The outer circumferential surface of the stabilizer bar 102 and the inner surface of the outer shell 133 and 134 were knurled as shown in FIG. 6 to increase the bonding force between the metal and the plastic.

The upper and lower rubber members 161 and 162 forming the rubber bush 160 are cushioning members, which elastically support the sliding member 130.

The mounting bracket 170 is formed to surround the entire surface except for the lower surface of the lower rubber member 161 in contact with the vehicle body or the subframe 104 and fixed to the vehicle body or the subframe.

At this time, the outer surface of the rubber bush 160 is formed in a waveform when viewed in cross section, and the mounting bracket 170 is also formed in a corrugated cross section, thereby more firmly fixing the fixing force of the rubber bush 160 and the mounting bracket 170. It was.

Accordingly, the mount bush 100 configured as described above may fix the stabilizer bar 102 to the vehicle body or the subframe in the form as shown in FIG. 6.

Then, the insert 110 is manufactured by injecting the stabilizer bar 102 directly, and serves as a clamp for preventing the release of the stabilizer bar 102, and a plurality of circumferential grooves 113, 114, and 115. By being coupled with the sliding member 130 by 116 and the peripheral jaw 117, 118, 119, it is possible to prevent the separation of the sliding member 130.

And the grease which is a lubricant is filled between the insert 110 and the sliding member 130, it is possible to minimize the friction of the entire behavior section, it is possible to prevent the generation of noise by minimizing the starting torque section.

In addition, since the insert 110 and the sliding member 130 are made of a plastic injection molding, tolerance management and assemblability are improved.

In addition, since the flanges 111 and 112 formed at both ends of the insert 110 serve as a sealer, it is possible to prevent foreign substances from penetrating and leaking grease, thereby preventing the performance degradation of the sliding member 130. do.

In addition, the thickness of the rubber member can be reduced by the above configuration, so that the curing effect of the rubber member due to the aging of the rubber member is also reduced to reduce the occurrence of noise.

7 is a view illustrating a coupling structure between both ends of the outer shell 133 and 134 of the sliding member 130 and the fillers 135 and 136. In an embodiment of the present invention, both ends of the outer shell 133 and 134 are formed. After bending inwardly in the longitudinal direction to be bent again to the outer diameter side so that its end is buried by the filler (135, 136), to maximize the coupling force of the shell (133) 134 and filler (135) (136).

FIG. 8 is a view showing another embodiment in which both ends of the outer shell 133 and 134 of the sliding member 130 and the fillers 135 and 136 are coupled to each other. By bending the outer side as much as the end is buried by the filler 135, 136, the outer skin 133, 134 and the filler 135, 136 to maximize the coupling force.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. Naturally, it belongs to the scope of the invention.

100 ... mount bush 102 ... stabilizer bar
110 ... insert 111,112 ... flange
113,114,115,116 ... the circumference groove 117,118,119 ... the circumference
130 ... sliding member 133,134 ... outer jacket
135,136 ... Filling material 138,140,146 ... Circumferential groove
142,144 ... Temperature 150 ... Combination protrusion
152 ... mating groove 160 ... rubber bush
161,162 ... rubber member 170 ... mounting bracket

Claims (8)

In forming the mount bush 100 for fixing both sides of the straight portion of the stabilizer bar 102 to the sub-frame (car body) 104,
An insert 110 which is directly injection-molded at the fixed portion of the stabilizer bar 102;
A sliding member (130) consisting of upper and lower members (131, 132) coupled to the outer circumferential surface of the insert (110) with a lubricating layer;
A rubber bush 160 coupled to the upper and lower rubber members 161 and 162 so as to surround the outer circumferential side of the sliding member 130;
Mounting bracket of the automobile stabilizer bar, characterized in that the mounting comprises a mounting bracket 140 is fixed to the sub-frame (car body) while wrapping the rubber bush (160). The insert 110 is directly injection molded with a certain length on the outer circumferential surface of the stabilizer bar 102, a large diameter flange 111, 112 is formed at both ends, the flange 111 Stabilizers for automobiles, characterized in that a plurality of circumferential jaws 113, 114, 115, 116 are formed between the 112, and thus the circumferential jaws 117, 118, 119 are formed. Bar of Mount Bush. 3. The mount bush of the stabilizer bar for automobiles according to claim 2, wherein the stabilizer bar (102) is knurled on the outer circumferential surface for the coupling force with the insert (110). The sliding member 130 is composed of outer shells 133 and 134 made of metal, and fillers 135 and 136 filled in plastic parts of the inner diameter portions of the outer shells 133 and 134. Mounting bush of the stabilizer bar for automobiles, characterized in that the upper and lower members 131 and 132 are made. The fillers 135 and 136 are formed in the inner diameter portion of the grooves 138 and 140 corresponding to the flanges 111 and 112 formed on both sides of the insert 110, respectively. Peripheral jaws 142 and 144 are formed corresponding to the grooves 113 and 116, and the three perimeter jaws 117 and 118 of the insert 110 are disposed between the perimeter jaws 142 and 144. Mount bush of the stabilizer bar for automobiles, characterized in that one large circumferential groove 146 is formed to receive 119. According to claim 4, The sliding member 130 is coupled to both ends of the outer shell 133, 134 and the fillers 135, 136 of the upper and lower members 131, 132, the outer shell 133 ( 134) the mounting bush of the stabilizer bar for automobiles, characterized in that the lengthwise inner side is bent and then back to the outer diameter side so that its end is buried by the fillers (135) (136). The sliding member 130 is coupled to both ends of the outer shell 133 and 134 of the upper and lower members 131 and 132 and the fillers 135 and 136, and the outer shell 133 and 134. Mounting the bush of the stabilizer bar for automobiles, characterized in that both ends of the bent in the longitudinal direction to the outside by a predetermined length so that its end is buried by the filler (135) (136). The mount bush of the stabilizer bar for automobiles according to claim 4, wherein the inner surface of the outer shell (133, 134) is knurled on the outer circumferential surface for bonding force with the filler (135) (136).

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