KR101866192B1 - Vehicle frame assembly having a front axle being displaceable in the transverse direction - Google Patents

Abstract

The present invention relates to a vehicle frame assembly having a front wheel axle capable of being transversely displaced, comprising: two side frames extending in the longitudinal direction of the vehicle; A cross frame having a motor and a driving gear axially coupled to the motor shaft, and a bracket rotatably supporting an end of the motor shaft and connecting the two side frames in a lateral direction; And a pair of channels disposed at both ends of the cross beam and having a hollow portion having a rectangular cross-sectional shape surrounding the side frames, and a pair of spiral grooves are formed on the outer circumferential surface of the cross beam, And a driven gear provided with a spiral projection on an inner circumferential surface of the through hole formed in an axial direction so as to be screwed on the helical groove of the round bar and arranged to mesh with the drive gear so as to engage with the drive gear; consist of.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a vehicle frame assembly having a front wheel axle capable of being horizontally displaceable, a vehicle frame assembly having a front axle being displaceable in the transverse direction,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle frame assembly having a front wheel axle capable of being horizontally displaceable.

Structurally, an automobile can be divided into a body and a chassis. Here, the vehicle body is a part constituting the vehicle exterior such as a car, an engine room, and a trunk room. The chassis means a configuration required for driving an automobile such as an engine, a power transmission device, a suspension device, and a brake device.

The frame is a part for mounting the above-described chassis on the vehicle body, and supports mounting parts, loads, and the like. Those skilled in the art mainly focus on studying a frame reinforcing structure having strength and rigidity enough to withstand torsion and vibration caused by dropping, as in Patent Document 1.

The frame reinforcing structure such as the prior art focuses on the fact that the lower portion can be effectively supported in the longitudinal direction of the vehicle. On the other hand, in the case of cornering, the center of gravity It is true that it overlooks the security book about the phenomenon of the tipping.

Korea Patent No. 10-0333881

SUMMARY OF THE INVENTION It is an object of the present invention to provide a frame structure of an automobile which can improve stability when cornering a vehicle.

Particularly, the present invention is to provide a frame assembly which is designed to be displaceable in the lateral direction of the front wheel axle of the vehicle.

In order to achieve the above object, according to a preferred embodiment of the present invention, a vehicle frame assembly having a front-

Two side frames extending in the longitudinal direction of the vehicle;

A cross frame having a motor and a driving gear axially coupled to the motor shaft, and a bracket rotatably supporting an end of the motor shaft and connecting the two side frames in a lateral direction; And

A pair of channels arranged at both ends of the cross beam and having a hollow portion having a rectangular cross-sectional shape surrounding the side frames, a pair of channels formed on the outer circumferential surface of the pair of channels, An axle frame having a circular rod interposed between the channels and a driven gear having a helical projection on the inner circumferential surface of the through hole formed in the axial direction so as to be screwed on the helical groove of the round bar and meshingly engaged with the drive gear, have. The present invention is characterized in that the axle frame is displaced transversely on the side frame through the driving of the motor.

The present invention is characterized in that a driven gear is disposed on the outer circumferential surface of the round bar so as to be rotatable in engagement with the drive gear, and can be rotatably positioned at the home position to push the round bar in the lateral direction through rotation of the driven gear.

The axle frame may be provided with a ball bearing on the inner circumferential surface of the through hole of the driven gear along the formation direction of the helical projections.

The present invention can include a serrated protrusion along the other side edge of the driving gear.

According to another aspect of the present invention, a disk may be further provided around an outer circumferential surface of a shaft of a motor, and one side surface of the disk may be provided with a serration-like projection that can engage with a serration- .

The cross frame may further include one or more brake calipers around the circumference of the disk.

The cross frame may further include a grip portion for limiting the lateral displacement of the round bar.

The present invention can form a first receiving groove formed laterally in the upper portion of the inner circumferential surface of the hollow portion of the channel so as to guide the displacement direction of the side frame and a second receiving groove formed laterally in the lower portion of the inner circumferential surface.

Preferably, the second receiving groove can arrange a plurality of roller bearings.

The side frame may have a second locking protrusion at a lower portion of the outer circumferential surface of the side frame so as to be coupled to the inside of the first receiving groove, and to be coupled with the first locking protrusion and the second receiving groove of the channel.

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The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to that, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may properly define the concept of the term in order to best explain its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

According to the present invention as described above, the present invention provides a vehicle frame assembly capable of laterally displacing the front wheel axle with respect to the side frame.

The present invention can reduce the change of the center of gravity by moving the center of gravity in the opposite direction of rotation by the centrifugal force when cornering, and it is possible to reduce the occurrence of rolling angles and distribute the load distribution applied to the left wheel and the right wheel, The stability and ride comfort can be guaranteed.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view schematically showing an automotive frame assembly with a transversely displaceable front wheel axle according to a preferred embodiment of the present invention; Fig.
2 is an exploded perspective view of the automotive frame assembly shown in FIG.
Fig. 3 is a plan view of a recessed portion of the automobile frame assembly shown in Fig. 1 viewed from above.
4 is an exploded perspective view of the power transmitting portion.
Fig. 5 (a) is a view schematically showing a left displacement state of a front wheel axle, and Fig. 5 (b) is a view schematically showing a right displacement state of a front wheel axle.

BRIEF DESCRIPTION OF THE DRAWINGS The objectives, specific advantages and novel features of the invention will become more apparent from the following detailed description and examples taken in conjunction with the accompanying drawings. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. In this specification, the terms first, second, etc. are used to distinguish one element from another, and the element is not limited by the terms. In the accompanying drawings, some of the elements are exaggerated, omitted or schematically shown, and the size of each element does not entirely reflect the actual size.

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

The automobile frame assembly having the front wheel axle capable of lateral displacement according to the preferred embodiment of the present invention can reduce the change of the center of gravity by moving the center of gravity of the vehicle in the opposite direction of rotation due to the influence of external force such as centrifugal force, It is possible to improve the stability by distributing the load distribution applied to the left wheel and the right wheel.

To this end, the present invention comprises two side frames (10) supporting the lower portion in the longitudinal direction of the vehicle and absorbing the impact applied in the longitudinal direction of the vehicle; A cross frame (20) connecting the side frames (10) in a lateral direction; And an axle frame (30) disposed in the lateral direction of the vehicle body and capable of positioning the front wheels of the vehicle on the left and right sides of the side frame (10). The axle frame (30) As shown in Fig.

Both ends of the axle frame 30 are provided with a front wheel (not shown) having a turning locus through adjustment of the steering device. The front axle includes a suspension for assisting connection between the axle frame and the front wheel, and a lever arm ), A spring that provides a cushioning force through spring motion, and the like are excluded here for the purpose of clarity of understanding of the present invention.

As shown in the figure, the two side frames 10 are positioned along the longitudinal direction (or front-rear direction) of the vehicle, and are arranged to face each other between the front wheel and the rear wheel.

The front side of the side frame 10 is provided with the axle frame 30 disposed across the wheel position point at which the front wheels of the vehicle can be positioned on the left and right sides and between the pair of side frames 10 in parallel with the axle frame 30 And a cross frame 20 fixed transversely to the cross frame 20. Although the cross frame 20 is illustrated as being disposed behind the axle frame 30, it may be disposed in front of the axle frame 30 as occasion demands.

The cross frame 20 not only transmits the power to the axle frame 30 which is seated so as to be laterally displaceable in the pair of side frames 10 but also can support the lateral rigidity of the vehicle body.

Specifically, the cross frame 20 includes a motor M, a cylindrical driving gear 210 that is pivotally supported by the motor shaft M1, and a bracket 250 that supports an end of the motor shaft M1.

The motor M is fixed on the cross frame 20 to provide the rotational force of the drive gear 210 while the bracket 250 is seated on the cross frame 20 to face the motor M. [ The bracket 250 is a structural member rotatably supporting the end of the shaft M1. The bracket 250 has a seating groove portion formed on one side facing the motor, and a bearing (not shown) .

The driving gear 210 may be a pinion gear having a tooth-like projection around the outer circumferential surface thereof, and is coupled and disposed on the shaft M1 to be rotationally driven depending on the rotational force of the shaft M1 . The drive gear 210 is interposed between the motor M and the bracket 250 so that the drive gear 210 is disposed at the center of the cross frame 20.

To be optional, the drive gear 210 includes a serrated protrusion 211 formed along the periphery of the other side opposite to the bracket 250. The cross frame 20 can arrange the disc 230 between the drive gear 210 and the bracket 250 and the motor shaft M1 is inserted into the through hole formed in the inner center of the disc 230, 230 so as to be rotatably supported by the driving gear 210. The disc 230 may be provided so as not to be affected by the rotational force of the motor shaft M1. The disc 230 has serration-like protrusions 231 formed along one edge thereof. Like projections 211 of the drive gear 210 and the serrated projections 231 of the disk 230 are arranged close to each other to control the rotation of the drive gear 210 through the braking of the disk 230 .

The cross frame 20 may further include one or more brake calipers 240 around the outer circumferential surface of the disk 230 disposed in front of one side of the bracket 250. [ The brake caliper 240 brakes the disc 230 by closely contacting the disc 230 with the pad inside the caliper by an electric or hydraulic brake system. That is, the present invention not only controls the rotation of the driving gear 210 through the on / off of the motor M, but also controls the rotation of the driving gear 210 through the operation of the caliper 240. [ The rotation can be controlled.

The axle frame 30 includes a cross beam 310 disposed laterally across a pair of side frames 10 and a hollow portion having a rectangular cross sectional shape and disposed at both ends of the cross beam 310 A circular rod 330 interposed between the pair of channels 320 and having a spiral groove 332 on the outer circumferential surface thereof and a helical groove 332 disposed on the helical groove 332 of the circular rod 330 and having a driving gear 210 And a driven gear 340 engaged with the driven gear 340.

The axle frame 30 has a channel 320 with a hollow section 321 having a rectangular cross section that can wrap around the front wheel position portion in the pair of side frames 10, And is inserted into the hollow portion 321 of the channel 320 so as to be displaceable in the lateral direction, i.e., to the left and right. The pair of channels 320 may be spaced apart from each other by a predetermined distance through the cross beam 310 arranged in parallel with the round bar 330 and may be resistant to transverse stiffness.

In order to prevent separation between the channel 320 and the side frame 10, the channel 320 has a first receiving groove 321a at the upper portion of the inner circumferential surface of the hollow portion 321 and a second receiving groove 321b at the lower portion of the inner circumferential surface thereof . The first and second receiving grooves 321a and 321b are formed in the lateral direction corresponding to the transverse direction displacement direction of the side frame 10 to guide the displacement direction of the side frame 10, It is possible to restrict longitudinal movement (in the longitudinal direction of the side frame). The side frame 10 is provided with a first locking protrusion 10a on the outer circumferential surface thereof so as to have a size and shape that can be seated in the first receiving groove 321a of the channel 320, 2 accommodating groove 321b. The second engaging protrusion 10b is provided at the lower portion of the outer circumferential surface of the second engaging protrusion 10b.

The side frame 10 supports the load in the hollow portion 321 of the channel 320 of the axle frame 30 at the time of lateral displacement of the axle frame 30 while reducing the friction and power loss, A plurality of roller bearings 322 are provided in the second receiving groove 321b.

The driven gear 340 may be a pinion gear having a tooth-like projection around its outer circumferential surface, and is screwed to the outer circumferential surface of the round bar 330 so as to engage with the driving gear 210. To this end, the driven gear 340 forms a through hole 341 which is perforated axially in the inner region thereof and forms a spiral protrusion 342 along the inner circumferential surface of the through hole 342 in a spiral direction.

The driven gear 340 rotates in engagement with the driving gear 210, and must be rotatably fixed at the home position without moving in the lateral direction. For example, the driven gear 340 is rotatably supported and supported in a suspended manner around the circumference of the round bar by a support bar (not shown) of the cross frame 20 so as to be fixed in position so as not to come off the drive gear 210 .

The automotive frame assembly according to the present invention may include a ball bearing (not shown) in place of the spiral protrusion 342 on the inner peripheral surface of the driven gear 342 so as to ensure easy lateral displacement of the round bar 330 through rotation of the driven gear, ) May be arranged in a spiral direction and a ball bearing may be mounted on the spiral projection.

In addition, the present invention includes a grip 260 extending from the cross frame 20 to the round bar 330 to limit lateral movement of the axle frame 30. The grip portion 260 can grip the round bar 330 if necessary to limit the lateral displacement of the round bar.

Fig. 5 (a) is a view schematically showing a left displacement state of a front wheel axle, and Fig. 5 (b) is a view schematically showing a right displacement state of a front wheel axle.

The automobile frame assembly having the front axle axle capable of laterally displacing according to the preferred embodiment of the present invention moves the front wheel axle of the vehicle body laterally when cornering as described above, The vehicle body is tilted and steered in the direction of the vehicle body, i.e., in the outward direction, and the stability and ride comfort are remarkably deteriorated. On the other hand, the present invention is designed to move the center of gravity of the vehicle outward in the direction of rotation by forcibly moving the front wheel axle in accordance with the steering angle of the vehicle or the like in the outward direction of rotation, thereby improving the stability in cornering.

If the motor M rotates in the forward direction, the driven gear 340 engaged with the driving gear 210 rotates in the counterclockwise direction and receives the rotating torque. The driven gear 340 rotating in the counterclockwise direction in the counterclockwise direction is relatively rotated by the screw connection between the helical projection 342 formed on the inner peripheral surface of the through hole 341 of the driven gear and the helical groove 332 of the round bar 330, 330 are forced to the left side and subjected to the leftward movement of the round bar to shift the axle frame 30 in the leftward direction so that the center of gravity of the front side of the vehicle can be shifted to the left by the size of the hollow portion of the channel 4).

Alternatively, when the motor M is rotated in the opposite direction, the driven gear 340 engaged with the drive gear 210 rotates in the clockwise direction to receive the rotational torque. The driven gear 340, which rotates in the clockwise direction in place, forcibly pushes the round bar 300 to the right and is subjected to the rightward movement of the round bar to displace the axle frame 30 in the rightward direction, To the right by the hollow portion size of the channel.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the scope of the invention as defined in the appended claims. It will be apparent to those skilled in the art that modifications and improvements can be made thereto by those skilled in the art.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10 ----- Side frame,
20 ----- Cross frame,
210 ----- Driving gear,
240 ----- Brake calipers,
250 ----- Bracket,
30 ----- axle frame,
310 ----- Cross beam,
320 ----- channel,
330 ----- Round bar,
340 ----- driven gear,
M ----- Motor.

Claims (10)

Two side frames (10) extending in the longitudinal direction of the vehicle;
A driving gear 210 axially coupled to a shaft M 1 of the motor M and a bracket 250 rotatably supporting an end of the shaft M 1, A cross frame (20) connecting the side frames (10) in a lateral direction; And
A cross beam 310 disposed laterally across the two side frames 10 and a hollow portion 321 having a rectangular cross section surrounding the side frame 10, A circular rod 330 interposed between the pair of channels 320 and a helical groove 332 formed in the outer circumferential surface of the circular rod 330. The pair of channels 320 are formed at both ends of the circular rod 330, And a driven gear 340 having a spiral protrusion 342 formed on an inner peripheral surface of a through hole 341 formed in an axial direction so as to be screwed onto the driving gear 210 and meshing with the driving gear 210, 30, < / RTI >
And a laterally displaceable front wheel axle capable of horizontally displacing the axle frame (30) on the side frame (10) by driving the motor (M).
The method according to claim 1,
Wherein the driven gear (340) is rotatably positioned at an original position so as to be able to rotate in engagement with the drive gear (210).
The method according to claim 1,
Wherein the axle frame (30) places a ball bearing along a direction of forming the helical projections (342).
The method according to claim 1,
The drive gear 210 is provided with a serration protrusion 211 along the periphery of the other side edge and the cross frame 20 further comprises a disk 230 around the circumference of the shaft M1 of the motor,
The disc (230) has a serrated protrusion (231) engageable with the serrated protrusion (211) along one side edge.

delete The method of claim 4,
Wherein the cross frame (20) further comprises at least one brake caliper (240) around an outer circumferential surface of the disk (230).
The method according to claim 1,
Wherein the cross frame (20) further comprises a grip portion (260) that limits lateral displacement of the round bar (330).
The method according to claim 1,
The channel 320 includes a first receiving groove 321a formed laterally on the inner circumferential surface of the hollow portion 321 so as to guide the displacement direction of the side frame 10, And a second receiving groove (321b).
The method of claim 8,
Wherein the second receiving groove (321b) places a plurality of roller bearings (322).
The method of claim 8,
The side frame 10 includes a first locking protrusion 10a which is seated in the first receiving recess 321a on the upper surface of the outer circumference and a second locking protrusion 10b which is seated in the second receiving recess 321b below the outer circumference. Wherein the frame assembly comprises:

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