KR100373868B1 - Disassembly device of a hub and bearing of a motormobile - Google Patents

Abstract

PURPOSE: An apparatus for disassembling a hub and a bearing, in a vehicle is provided to easily assemble the hub and bearing from a knuckle in all kinds of vehicles and to facilitate a change of a broken bearing. CONSTITUTION: An apparatus for disassembling a hub and a bearing, in a vehicle comprises a knuckle support unit(30) fixed to a knuckle, and a power transmission unit. The knuckle support unit has a transverse rod(31) longitudinally extended, a fixed connection part(33) connected to one of two vehicle body-connecting apparatuses of a knuckle, and a movable connection part(35) longitudinally moved in a slit(34) and connected to the rest of the vehicle body-connecting apparatuses. The power transmission unit comprises a fixing bar laid to the middle lower part of the transverse rod of the knuckle support unit; a power transmission screw rod screwed to a middle part of the fixing bar; and a fitting part fixed to the end of the knuckle side of the screw rod and contacted with a hub shaft or the bearing. The apparatus for disassembling the hub and bearing pushes the hub shaft or bearing disposed to the end of the fitting part by transmitting power to a hexagonal bolt, rotating the screw rod, and advancing the screw rod. The movable connection part comprises a crossing support plate, a plate, and a bolt screw rod(44).

Description

Passenger car hub and bearing disassembly {DISASSEMBLY DEVICE OF A HUB AND BEARING OF A MOTORMOBILE}

The present invention relates to a tool for dismantling a hub and a bearing from a knuckle of a passenger car.

Usually, a hub for transmitting the rotational motion of the universal joint of an automobile to a wheel is engaged with a knuckle fixed to the vehicle body via a bearing. FIG. 1 shows such a knuckle-bearing-hub assembly in which the knuckle 1 has a number of fasteners for fastening the knuckle to the vehicle body, in particular two fasteners 2, 3 arranged opposite one another. In addition, the bearing 4 and the hub shaft 5 are fitted into the shaft hole at the center of the knuckle from the outside. The hub shaft is splined with a universal joint (not shown) for transmitting rotational motion from the engine to wheels (not shown) connected to the hub.

After about 70,000 to 100,000 km of travel, the bearings between the hub axle and the knuckles become so bad that noise needs to be replaced. To remove the bearings, first remove the wheels and then remove the knuckle-bearing-hub assembly from the body. Next, the hub shaft disposed inside the bearing is separated from the knuckle-bearing assembly, and then the bearing fixed to the knuckle is sequentially removed. However, conventionally, there is no suitable tool for separating the hub axle and the bearing, so after fixing one of the two body fixing parts of the knuckle to the vise, etc., and then fixing the other body fixing parts with a manual vice, The same tool was used and a hammer was placed on it. According to this separation process, not only a lot of effort is spent on the price of the hammer, etc., but there is a risk of damage to the inside of the hub shaft connected to the universal joint.

In contrast, a hydraulic hub disassembler as shown in FIG. 2 is used. This hydraulic hub disengagement port 11 is composed of two support arms 12 and 13 and a hydraulic jockey 14 at the center thereof, and each end of the support arm is connected to two bodywork connectors in separate knuckles. After fixing, the alignment portion 15 at the end of the jockey is opposed to the hub shaft, and the hydraulic shaft is applied to push the hub shaft from the knuckle fixed to the tool to separate the hub shaft from the knuckle. However, such a hydraulic hub disassembler can be used only in the same direction of the two opposing body fixing holes in the knuckle, but in actual domestic cars, there are also vehicles in which these two opposing knuckle-body fixing tools extend perpendicular to each other. In addition, it cannot be used in such a vehicle, and because the configuration of the tool is complicated and the price is too expensive, it is used only in a large vehicle repair station and is not widely used in the industry.

Accordingly, the present invention is to overcome the disadvantages of the prior art as described above, to provide a hub and bearing disassembly of a simple and inexpensive structure that can easily separate the hub shaft and the bearing from the knuckle of the passenger car.

Another object of the present invention is to provide a hub-bearing dismantling device applicable to all kinds of passenger cars.

1 is a perspective view of a knuckle-bearing-hub assembly integrally coupled with a hub to be separated.

2 is a view showing a hydraulic hub disassembly tool according to the prior art.

Figure 3 shows a knuckle connection used in the hub and bearing disassembly according to the present invention, Figure 3a is a front view, Figure 3b is a plan view, Figure 3c is a left side view and Figure 3d is a right side view.

Figure 4 shows a power transmission for use in the hub and bearing disengagement according to the present invention.

Figure 5 is a view of another embodiment of the mobile connection portion of the hub and bearing disassembly according to the present invention.

6 is a view showing an operating state of separating the hub using the knuckle support and the power transmission unit according to the present invention.

7 shows a power transmission unit according to another embodiment.

FIG. 8 is an operation state diagram for disassembling the bearing using the power transmission unit and the knuckle fixing unit according to the embodiment shown in FIG. 7, to separate the bearing in a direction opposite to the direction in which the hub is disassembled.

** Description of the symbols for the main parts of the drawings **

30: knuckle support 31, 32: crossbar

33: fixed connection part 34: slit

35, 50: movable connection portion 40: transverse support plate

41: U-shaped plate 42: screw bolt

43: nut 44: bolt screw rod

51 U-shaped plate 56 cylindrical holder

74: disc protrusion

Briefly explaining the principle of the hub shaft and bearing disengagement sphere to achieve the object of the present invention, after installing two crossbars connected to the two bodywork fixtures on both ends of the approximately circular shape knuckle, the crossbars Insert the power transmission screw rod between them and arrange the bar (bar) which is screwed with the screw rod across the center lower part of the crosspiece, and make the alignment part at one end of the screw rod contact with the hub shaft or the outer peripheral surface of the bearing. When a force is applied to the hexagonal bolt at the other end, the screw rod is supported by the catching bar and the crossbar, and proceeds in the hub or bearing direction, whereby the hub and the bearing can be disassembled from the knuckle.

Looking in detail, the hub shaft and the bearing disengagement sphere according to the present invention, two parallel rungs extending in the longitudinal direction, and fixed to one end of the two rungs, connecting to any one of the two bodywork connector in the knuckle A knuckle of a vehicle having a fixed connection portion and a movable connection portion for longitudinally moving within a longitudinal slit formed at the other end of the crosspiece and for connecting to the remaining vehicle body connector of the nuzzle A knuckle support portion fixedly supported to the knuckle across the upper portion; Across the crossbar of the knuckle support secured to the knuckle, a catching bar (bar) that spans the center lower portion of the crossbar, a power transmission screw rod screwed to the center portion of the catching bar, and fixed to the knuckle end of the screwing rod It consists of a power transmission portion consisting of a fitting portion in contact with the hub shaft or bearing. The other end of the power transmission screw rod has a hexagonal bolt portion for rotating the screw rod by applying a disassembling force, by applying an impact to the hexagonal bolt to rotate the power transmission screw rod to advance the screw rod against the engaging bar and crossbar The hub shaft or bearing at the tip of the fitting portion is pushed out of the knuckle.

The movable connection part comprises: a transverse support plate which traverses two cross bars through the slit and is movable in the longitudinal direction along the inside of the slit; The U-shaped plate has a central hole in the center and a pair of holes formed at the open end, and penetrates one of the pair of holes formed in the open end and the vehicle body fixture of the knuckle. A U-shaped plate having a screw bolt and a nut for fixing the plate to the knuckle; A bolt screw rod extending through a central hole of the c-shaped plate and a hole formed in the center of the cross supporting plate, wherein the head of the bolt is disposed inside the c-shaped plate, By having an abutting nut, the bolt screw rod for adjusting the distance between the crosspiece and the U-shaped plate. It is possible to move the movable connection in the longitudinal direction of the crosspiece, the distance between the two vehicle body fasteners of the knuckle is different depending on the vehicle type and thus to fix the knuckle support to the knuckle.

At this time, the U-shaped plate can freely rotate around the bolt screw rod, so that the U-shaped plate can be fixed to the vehicle fixing fixture even if the vehicle fixing fixture of the knuckle faces in any direction.

At this time, the movable connection portion is provided with a U-shaped plate, instead of the U-shaped plate, the center of the plate is formed in the elongated central hole, a pair of holes are formed at the open end, the open side A U-shaped plate having a screw bolt and a nut for fixing the U-shaped plate to the knuckle by penetrating one of a pair of holes formed in the end and a vehicle body fastener of the knuckle; A bolt screw rod extending through a central hole of the U-shaped plate and a hole formed in the center of the transverse support plate; The cylindrical fixture is disposed in contact with the inside of the curved portion of the U-shaped plate, the center of the fixture is a cylindrical fixture formed with a screw hole for fixing one end of the screw rod; It is also possible to freely maintain the inclination of the U-shaped plate which is connected to the vehicle body fixture in the protrusion which the formed knuckle protrusion is not perpendicular to the crosspiece, that is, the protrusion which is not perpendicular to the knuckle body.

In addition, in all models, the hub axle is separated from the other side of the body (hereinafter referred to as the outside), while bearings to be removed after the hub axle are separated from the outside, that is, the direction in which the hub axle is separated, There are some types of vehicles (for example, Hyundai Motor Co., Ltd.), in which the bearings need to be separated from the vehicle side (hereinafter referred to as "inside") with the knuckle fixed to the vehicle body, although it may be separated in the same direction. The bearing disengagement hole for separating the bearing of this configuration is the same as the above-described configuration in the knuckle support portion fixed to the knuckle in the power transmission central screw rod, but in a direction opposite to the direction in which the hub shaft is removed (outside the vehicle). Since the bearing must be separated, that is, the bearing must be pulled out in the direction in which the knuckle support is fixed. To this end, a disk-shaped protrusion is formed just below the hexagonal bolt portion of the central screw rod to contact the outer circumference of the bearing, and the opposite end of the power transmission screw rod extends over the cross rod between the two cross rods. The engaging bar to be engaged is not over the center bottom of the crosspiece but over the center top. In this state, by applying an impact to the hexagon bolt, the power transmission screw rod is rotated to advance the screw rod in the direction of the knuckle support with respect to the catching bar and the crossbar, so that the bearing hanging on the disc-shaped protrusion is pulled from the knuckle. Can be separated.

In the above example, since the crossbar is subjected to a relatively large force, it is preferable to use high strength 50C (carbon content about 0.005%) carbon steel, but is not limited thereto.

Other detailed configurations and operating states of the hub shaft and the bearing disassembly according to the present invention will be described with reference to the accompanying drawings.

3A to 3D show front, planar and left and right side views of the knuckle support 30 used for the hub side and bearing disengagement according to the present invention. The knuckle support can be moved in the longitudinal direction of the crosspiece along the two crosspieces 31 and 32 and the fixed connecting portion 33 formed at one end of the two crossbars and the slit 34 formed at the other end of the crossbar. It consists of a connection part (35). The stationary and movable connections are respectively connected to two bodywork fixtures in the knuckle, thereby serving to firmly support the knuckle support to the knuckle.

As shown in FIG. 3C, the fixed connection part 33 includes a protrusion 36 extending from the end of the crosspiece by a predetermined length perpendicular to the crosspiece and a screw bolt 37 passing through a hole formed at one end of the two protrusions. It consists of a nut 38. This screw bolt 37 is connected to the knuckle by penetrating one body fixture in the knuckle.

As shown in FIG. 3D, the movable connection part 35 includes a transverse support plate 40 disposed in a direction crossing the cross bars in the slits 34 at the other ends of the two cross bars, and a c-shaped plate 41. In the center, a central hole is formed in the center, and a pair of holes are formed at the open end, and the c-shaped plate is formed by passing through one of the pair of holes formed at the open end and the vehicle body fastener of the knuckle. A c-shaped plate 41 having a screw bolt 42 and a nut 43 for fixing to a knuckle, a central hole of the c-shaped plate 41 and a center of the transverse support plate 40. A bolt screw rod 44 extending through a hole formed therein, wherein the head 45 of the bolt is disposed inside the c-shaped plate 41 and is in contact with the upper end of the cross supporting plate 40. Equipped with Thus, it consists of a bolt screw rod 44 for adjusting the distance between the crosspiece and the U-shaped plate. The U-shaped plate 41 surrounds the protrusion in which the vehicle body fastener of the knuckle extends, and the threaded bolt 42 at the open end of the plate 41 penetrates the vehicle body fastener to open the U-shaped plate 41. It will be fixed to the knuckle. At this time, the protrusion of the knuckle (3 ′ in FIG. 1) in which the vehicle body fastener is formed is not perpendicular to the knuckle body but protrudes obliquely at a slight angle depending on the vehicle model. Accordingly, in order to receive sufficient force by the bolt head 45 of the bolt screw rod 44 completely contacting the inside of the c-shaped plate and to prevent the screw rod near the bolt head from bending, the c-shaped plate is illustrated in FIG. 3a. Slightly crushed as in That is, the corners of the letter c are not perpendicular, and have acute angles at one vertex and obtuse angles at the other vertices.

In this way, in order to secure the c-shaped plate at an angle according to the angle of the protruding portion in which the vehicle body fixture is formed with respect to the knuckle and receive sufficient force, as shown in FIG. 5, the movable connection part according to the second embodiment of the present invention. In the 50, instead of the U-shaped plate, the U-shaped plate 51 is provided. The curved portion of the U-shaped plate 51 is formed with an elongated central hole 52 for penetrating the bolt screw rod 44, and a pair of holes are formed at the open end thereof, and are disposed through the hole. A screw bolt 53 and a nut 54 for fixing the U-shaped plate to the vehicle body fixture in the protrusion are disposed. In addition, unlike the first embodiment, the head of the bolt screw rod does not exist, but is provided with a cylindrical fixing body 56 for fixing the bolt screw rod to the U-shaped plate. The cylindrical fixture 56 is disposed in contact with the inside of the U-shaped plate curved portion, the screw hole screwed with one end of the bolt screw rod 44 introduced into the U-shaped plate through the central hole 52 It is formed in the central part of the side surface of this cylindrical fixture 56. As shown in FIG. When the U-shaped plate 51 and the cylindrical fixture 56 are used, the entire side of the cylindrical fixture is U-shaped even when the U-shaped plate is inclined regardless of the angle of the protrusion formed obliquely with respect to the knuckle. There is an advantage in that sufficient force can be transmitted by abutting inside the shape plate.

Figure 4 shows in detail the power transmission for separating the hubshaft and bearing from the knuckle by transmitting power after the knuckle support is firmly supported by the knuckle. Power transmission unit 401 is a power transmission that is screwed with the engaging bar 402, bar that spans the center of the crossbar, across the crosspiece of the knuckle support fixed to the knuckle, and the central portion 402 'of the locking bar. It consists of a screw rod 403 and a fitting portion 404 fixed to the knuckle end of the screw rod to abut the hub shaft or the bearing. The fitting portion 404 is preferably, but not limited to, a continuous 404 or discontinuously narrowed toward the end portion so as not to slip by inserting a portion into the hub shaft or the bearing to be separated. In addition, the hub shaft separating fitting portion 404 as shown in FIG. 4 is fixed to one end of the power transmission screw rod, and the bearing fitting separating portion 405 of the hub shaft separating fitting portion 404 is fixed. It may be used additionally arranged at the tip. In addition, a hexagonal bolt head 406 for power transmission is formed at an end portion of the power transmission screw rod 403 opposite to the alignment portion 404.

6 is a view showing an operating state of separating the hub by using the knuckle support and the power transmission unit according to the present invention, the screw bolt-nuts (603, 604) and the movable connection of the fixed connection 602 of the knuckle support (601) The threaded bolt-nuts 607 and 608 in the U-shaped plate 606 of 605 are fixed to the knuckle support 601 by knuckles, respectively, by being fixed to the two bodywork fixtures of the knuckle. Thereafter, the power transmission screw rod 611 of the power transmission unit 610 is inserted between the two crossbars, and the engaging bar 612 screwed to the power transmission screw rod is disposed at the bottom of the crossbar so as to cross the crossbars. Align the fittings 613, 614 at one end of the power transmission screw rod against the hub axle or bearing. Thereafter, an impact is applied to the hexagonal bolt head 615 at the other end of the power transmission screw rod 611 to rotate the power transmission screw rod. Then, the threaded rod is screwed toward the hub shaft or the bearing while being supported by the crossbar and the engaging bar arranged transversely thereto. Accordingly, the hub shaft or bearing in contact with the fitting portion 613 is pushed away from the knuckle support and separated.

However, as described above, the hub axles of all vehicles are separated in the direction in which the wheels are mounted (ie, the outside of the vehicle), but the bearings are separated from the outside of the vehicle in which the wheels are mounted, depending on the vehicle type (hunger, Daewoo, etc.). On the other hand, there is also a vehicle (modern) to be separated in the opposite direction that the wheel is mounted, that is, inside the vehicle. For this latter case, a hub and bearing dismantling tool according to another embodiment of the present invention will be described with reference to FIG. The knuckle support of this dissociation sphere is the same as in the above-described embodiment, but the power transmission portion 71 is a disk-shaped protrusion for contacting the outer circumference of the bearing just below the hexagonal bolt portion 73 of the power transmission screw rod 72. 74 is formed, and the engaging bar 75 is screwed with the power transmission screw rod is crossed across the two crossbars. On the other hand, the opposite end portion is not provided with the hub shaft or the bearing alignment portion (613, 614) provided in the above embodiment.

FIG. 8 illustrates an operation state of separating a bearing to be separated into the vehicle by using a bearing disassembling device according to another embodiment. After the hub shaft is separated, the power transmission screw rod passes through the bearing hole from the opposite side where the knuckle support is installed, and then extends the end of the screw rod over the crossbar between the two crossbars. In this case, the hexagonal bolt portion is positioned on the side in which the hub is separated, and the disc-shaped protrusion 74 abuts against the inner circumferential surface of the bearing, and passes the opposite end of the power transmission screw rod extending through the cross rod between the two cross rods. Through the engaging bar 75 is screwed with the power transmission screw rod 72, the engaging bar is not over the center of the crosspiece, but across the top of the center. In this state, by applying an impact to the hexagonal bolts, the power transmission screw rod is rotated to advance the screw rod in the direction of the knuckle support with respect to the catching bar and the crossbar, whereby the bearing 80 caught on the disc-shaped protrusion is It can be pulled away from the knuckle.

As described above, when the hub and bearing disassembling device according to the present invention is used, the damaged bearing can be easily replaced by separating the hub and the bearing from the knuckle in all types of passenger cars.

Claims (4)

Two parallel rungs 31 and 32 extending in the longitudinal direction, a fixed connection part 33 fixed to one end of the two rungs, for connecting to any one of the two bodywork connectors in the knuckle, and the rungs And movable in the longitudinal direction by a predetermined length in the longitudinal slits 34 and slit formed at the other end, and having a movable connection part 35 for connecting to the remaining body connector of the knuckle. A knuckle support 30 fixedly supported at the knuckle across; A power transmission screwed with the engaging bars 402 and bar across the crosspieces 31 and 32 of the knuckle support secured to the knuckle, and across the central lower portion of the crossbars; And a power transmission unit 401 which is formed of a four-rod 403 and a fitting portion 404 fixed to the knuckle-side end of the screw rod to abut the hub shaft or the bearing. The power is transmitted to the hexagonal bolt portion 406 at the other end of the power transmission unit by rotating the screw rod 403 to advance the screw rod 403 with respect to the catching bar 402 and the cross bars 31 and 32, thereby making the alignment. A hub shaft and bearing disengagement port for pushing the hub shaft or bearing at the tip of the part 404 out of the knuckle, The movable connection part 35 A transverse support plate 40 passing through the slit 34 to traverse the two crosspieces 31 and 32 and movable longitudinally along the inside of the slit; As the U-shaped plate 41, a central hole is formed at the center and a pair of holes are formed at the open end, and the penetrating hole passes through one of the pair of holes and the vehicle body fixture of the knuckle. A c-shaped plate having a screw bolt 42 and a nut 43 for fixing the c-shaped plate 41 to the knuckle; A bolt screw rod 44 extending through a central hole of the c-shaped plate 41 and a hole formed in the center of the transverse support plate 40, wherein the head 45 of the bolt is a c-shaped. Bolts for adjusting the distance between the crosspieces 31 and 32 and the c-shaped plate 41 are arranged inside the plate 41 and provided with a nut 46 contacting the upper end of the transverse support plate 40. Four shafts 44; hub shaft and bearing disassembled, characterized in that consisting of. delete Two parallel rungs 31 and 32 extending in the longitudinal direction, a fixed connection part 33 fixed to one end of the two rungs, for connecting to any one of the two bodywork connectors in the knuckle, and the rungs And movable in the longitudinal direction by a predetermined length in the longitudinal slits 34 and slit formed at the other end, and having a movable connecting portion 50 for connecting the remaining body connecting portion of the knuckle, A knuckle support 30 fixedly supported at the knuckle across; A power transmission screwed with the engaging bars 402 and bar across the crosspieces 31 and 32 of the knuckle support secured to the knuckle, and the center portion 402 'of the engaging bar; And a power transmission unit 401 which is formed of a four-rod 403 and a fitting portion 404 fixed to the knuckle-side end of the screw rod to abut the hub shaft or the bearing. The alignment is transmitted by transmitting power to the hexagonal bolt portion 406 at the other end of the power transmission part and rotating the screw rod 403 to advance the screw rod 403 against the catching bar 402 and the cross bars 31 and 32. A hub shaft and bearing disengagement port for pushing the hub shaft or bearing at the tip of the part 404 out of the knuckle, The mobile connection unit 50 A transverse support plate (40) passing through the slit (34) and crossing the two crosspieces (31, 32) and movable longitudinally along the inside of the slit; The U-shaped plate 51 has a central hole 52 extending in the center thereof, and a pair of holes formed at the open end thereof, and a pair of holes and knuckles formed in the open end thereof. A U-shaped plate 51 having a screw bolt 53 and a nut 54 for fixing the U-shaped plate 51 to the knuckle by penetrating one; A screw rod extending through the center hole 52 of the U-shaped plate 51 and the hole formed in the center of the transverse support plate 40, the cross bars 31 and 32 and the U-shape. A bolt screw rod 44 for adjusting the distance between the plates 51; And, A cylindrical fixture 56 is disposed in contact with the inside of the curved portion of the U-shaped plate 51, a screw hole for fixing one end of the bolt screw rod 44 in the center of the fixture 56 The cylindrical shaft 56 is formed, the hub shaft, characterized in that freely maintaining the inclination of the U-shaped plate 51 connected to the vehicle body fixture in the projection that is not perpendicular to the knuckle body vertically And bearing disassembly. The method according to any one of claims 1 to 3, A disc-shaped protrusion 74 is formed below the hexagonal bolt portion 73 of the power transmission screw rod 72, and the fitting portion 404 is detachable from the power transmission screw rod 72. Shaft and bearing disassembly.