CN214215915U

CN214215915U - Automobile steering column assembly with turnover function

Info

Publication number: CN214215915U
Application number: CN202023156651.XU
Authority: CN
Inventors: 徐镇; 郑云刚; 薛阳; 李凡; 陈宏�; 万鹏
Original assignee: Jiangsu Jinye Auto Parts Co ltd
Current assignee: Jiangsu Jinye Auto Parts Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-09-17
Anticipated expiration: 2030-12-24

Abstract

The utility model discloses an automobile steering column assembly with turnover function, which comprises a body, the body comprises an upper bracket component, a lower bracket component, a steering shaft lower component, an upper mounting bracket component, a lower mounting bracket component and a handle adjusting component, the upper bracket component comprises a movable rack, an operating rod, a second cylindrical pin, a third cylindrical pin, an upper bracket, a steering shaft upper part, a shaft elastic retainer ring, a first bearing and an inner spacer ring, one end of the steering shaft upper part is provided with an open joint fork, the first bearing is arranged at the middle part of the steering shaft upper part close to one side of the open joint fork through over-fit, and is fixed in the upper bracket through the circlip for the shaft, the first bearing is arranged in the upper bracket through interference fit, the movable rack is movably fixed on the upper bracket through a second cylindrical pin, the operating lever is fixed on the upper bracket through a third cylindrical pin, and the movable rack is arranged above the operating lever.

Description

Automobile steering column assembly with turnover function

Technical Field

The utility model relates to a car steering transmission field, concretely relates to take car steering column assembly of convertible function.

Background

With the needs of commercial activities, the automobile is not only a travel tool, but also can be a place for activities of several people in some cases, and is equal to a small conference, participants need to face each other for politeness and respect, but the space in the automobile is limited, a driver seat is obstructed by the existence of a steering wheel, the steering wheel cannot be utilized, and the use space is compressed. If the position of the steering wheel can be released, the driver seat can be inverted by 180 degrees at the original site to carry out face-to-face communication with a person in the backseat, so that the utilization space and the use range of the passenger car are enlarged, and based on the assumption, the automobile steering column assembly with the turnover function is produced.

Disclosure of Invention

For solving the not enough of prior art, the utility model aims to provide a on realizing steering wheel quadriversal adjustable basis, increase one set of tilting mechanism, make the steering wheel can overturn 90, vacate the seat space, make the driving seat can invert 180 at the original site, improved the utilization ratio in car space, take the auto steering column assembly of convertible function.

In order to achieve the above object, the utility model adopts the following technical scheme:

an automobile steering column assembly with a turnover function comprises a body and is characterized in that the body comprises an upper support component, a lower support component, a steering shaft lower component, an upper mounting support component, a lower mounting support component and a handle adjusting component, wherein the upper support component comprises a movable rack, an operating rod, a second cylindrical pin, a third cylindrical pin, an upper support, a steering shaft upper part, a shaft elastic retainer ring, a first bearing and an inner retainer ring, an open joint fork is arranged at one end of the steering shaft upper part, the first bearing is arranged at the middle part of the steering shaft upper part close to one side of the open joint fork through excessive fit and is fixed in the upper support through the shaft elastic retainer ring, the first bearing is arranged in the upper support through interference fit, the movable rack is movably fixed on the upper support through the second cylindrical pin, the operating rod is fixed on the upper support through the third cylindrical pin, the movable rack is arranged above the operating rod, the lower support component comprises a lower fixed support, a steering column, an upper fixed support, a lower support, a first cylindrical pin, a fixed toothed plate and a plastic liner, the lower support is arranged at one end of the steering column through die casting, the lower fixed support is arranged at one end, far away from the lower support, of the steering column through welding, a rectangular groove is formed in the lower portion of the lower fixed support, the plastic liner is arranged on the lower fixed support through the rectangular groove, the upper fixed support is arranged at one end, close to the lower support, of the steering column through welding, the fixed toothed plate is fixed to the upper portion of the lower support through the first cylindrical pin, the lower portion of the lower support is connected with the lower portion of the upper support through two pin shafts, the lower steering shaft component comprises a spline shaft, a gasket, a welding fork, a spline sleeve and a second bearing, and the spline shaft is arranged in the steering column, the improved steering column structure is characterized in that one end of the spline housing is provided with a spline, the other end of the spline housing is provided with a unthreaded hole, the welding fork is arranged in the unthreaded hole, close to one end of the lower support, of the spline housing through welding, the welding fork is connected with the upper portion of a steering shaft through a cross joint, one end of the spline shaft is provided with a sliding spline, the sliding spline is tightly matched with the spline housing through injection-molded nylon, the second bearing is arranged at one end, far away from the sliding spline, of the spline shaft through interference fit, the upper mounting support assembly is symmetrically arranged on the front side and the rear side of the steering column, the upper mounting support assembly comprises a U-shaped plate, a crumpling steel belt, a positioning safety block and an upper mounting support, the U-shaped plate is arranged on the upper mounting support through welding, the positioning safety block is arranged on the upper mounting support through injection molding, the crumpling steel belt is arranged on the positioning safety block, the lower mounting support assembly comprises a connecting bolt, Connecting nut, lower installing support is fixed in down on the fixed bolster through connecting bolt, connecting nut, handle adjusting part includes locking bolt, lock nut, stop spring, fixed cam, sliding cam, nylon packing ring and handle, nylon packing ring symmetry sets up in the U template outside, U template front side be provided with fixed cam in the nylon packing ring, the fixed cam outside is fixed with sliding cam, the sliding cam outside is provided with the handle, locking bolt passes the nylon packing ring of handle, sliding cam, fixed cam, U template front side, the nylon packing ring of U template rear side in proper order to lock through lock nut, stop spring one end sets up in nylon packing ring top, and the other end passes through the draw-in groove and sets up on the U template.

Preferably, the upper bracket is made of aluminum alloy through die casting, the lower portion of the upper bracket is arranged to be a long waist square, the long waist square is arranged at two bearing holes in a central symmetry manner, a pair of first ear forks are arranged at the upper portion of the upper bracket, the first ear forks are symmetrically arranged at two sides of the central line of the bearing holes, planes at the outer sides of the first ear forks are parallel, first cylindrical holes which are coaxial and used for connecting the lower bracket are arranged on the first ear forks, a trapezoidal frame is arranged above the first ear forks and comprises a front panel and a rear panel, second cylindrical holes 132 which are used for movably fixing movable racks are arranged on the front panel and the rear panel, the two second cylindrical holes are arranged coaxially, a first U-shaped groove is arranged between the trapezoidal frame and the first ear forks, and a cylindrical pin hole which is used for movably fixing the operating lever is arranged on one side of the trapezoidal frame, which is close to the first ear forks at the rear side, the top of the cylindrical pin hole is provided with a second U-shaped groove

Still preferably, the lower bracket is made of aluminum alloy by die casting, the lower end of the lower bracket is provided with a first cylinder, a through hole is arranged in the first cylinder, the through hole corresponds to the steering column, a spline is arranged on the excircle of the connecting part of the steering column and the lower bracket, three holes are uniformly distributed on the excircle of the steering column, the steering column is connected with the lower bracket through die casting, a pair of second ear forks are arranged at the upper part of the lower bracket and symmetrically arranged along the central line of the steering column, the inner side surfaces of the two second ear forks correspond to the outer side surface of the first ear fork on the upper bracket, the two second ear forks are provided with coaxial third cylindrical holes, and a door-shaped frame is arranged on one side of the central line of the second ear fork, and the two side surfaces of the door-shaped frame are provided with coaxial fourth cylindrical holes for fixing the fixed toothed plate on the lower bracket.

More preferably, the operating lever is manufactured by injection molding, a second cylinder is arranged at one end of the operating lever, a fifth cylinder hole used for fixing the operating lever in a second U-shaped groove of the upper bracket is arranged in the middle of the second cylinder, the other end of the operating lever is arranged as an operating handle, the middle bottom of the operating lever is arranged as a plane, and the plane is arranged as a gradual curvature inclined plane

Further preferably, the fixed toothed plate is manufactured by powder metallurgy, the upper surface and the ground of the fixed toothed plate are parallel planes, sixth cylindrical holes used for fixing the fixed toothed plate on the lower support are arranged at two ends of the long distance direction of the parallel planes, a full-tooth spline is arranged on one side of the fixed toothed plate and is arranged in an inwards concave arc surface structure

Specifically, aforementioned movable rack is made by powder metallurgy, set up to parallel plane above and below the movable rack, parallel plane long distance direction one end is provided with the seventh cylinder hole that is used for being fixed in the upper bracket with movable rack, parallel plane short distance one side is provided with half rack, half rack sets up to outer convex circular arc surface structure, half number of teeth matches with the full tooth shape spline on the fixed tooth board, the opposite side of parallel plane short distance sets up to two hump curved surface structures, the corresponding inclined plane of gradual camber of bottom in the middle of two hump curved surface structures and the control rod

Still preferably, the number of teeth of the half rack is one half of the number of teeth of the full-tooth spline

More preferably, the cross joint is a semi-body made of nylon through injection molding, and is integrated when assembled, the outer part of the cross joint is a hemisphere, the cross joint is provided with a cross groove, the groove diameter of the cross groove is set to be a crossed semi-cylinder structure, and two inclined planes are symmetrically arranged on two sides of the center of the cross groove

Further preferably, the steering shaft upper part is manufactured by round steel cutting, one end of the upper part of the steering shaft, which is far away from the opening yoke, is provided with a conical surface and a spline for mounting a steering wheel, the aperture of the opening yoke corresponds to the inner diameter of the cross groove with ten bytes, the thickness of the opening yoke corresponds to the groove width of the cross groove, one end of the open yoke, which is far away from the spline, is provided with a first open slot, the width of the first open slot is three-fourths of the aperture of the open yoke, a second open slot is arranged at one end of the open joint fork, which is far away from the first open slot, the first open slot and the second open slot are arranged on the same axis, a bearing stop is arranged at one end, close to the opening yoke, of the upper portion of the steering shaft, a cylindrical hole is formed in the center of the opening yoke, and inclined planes inclining inwards towards the center are arranged at two ends of the cylindrical hole.

Still further preferably, the welding fork is formed by cutting a finish forged piece, one end of the welding fork is arranged to be a cylinder, the outer diameter of the cylinder corresponds to the diameter of a unthreaded hole of the spline housing, the other end of the welding fork is arranged to be a third lug fork, a cylindrical hole is arranged in the middle of the third lug fork, the thickness of the third lug fork corresponds to the width of a cross groove of a cross, a third opening groove is arranged at one end, far away from the cylinder, of the third lug fork, the width of the third opening groove is three quarters of the inner diameter of the third lug fork, the thickness of the third lug fork is smaller than the width of the second opening groove, and inclined planes inclining inwards towards the center are arranged at two ends of the cylindrical hole.

The utility model discloses an useful part lies in: control rod 11, cross section 20 all adopt the nylon materials, and similarly, flexible spline tooth surface also scribbles the nylon layer, because the nylon characteristic makes the nature, no matter the steering wheel upwards overturns 90 when during operation transmission steering torque still needs, when bearing radial and axial impact, has played the elimination vibration undoubtedly, avoids producing the beneficial effect of abnormal sound. The steering wheel is added with a turning function, the application range of the passenger car is expanded, and the steering wheel is undoubtedly good in favor under the large background of the current social development

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic structural view of the upper bracket;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a schematic structural view of the lower bracket;

FIG. 6 is a top view of FIG. 5;

FIG. 7 is a schematic view of a joystick;

FIG. 8 is a top view of FIG. 7;

figure 9 is a schematic structural view of the fixed tooth plate;

FIG. 10 is a schematic view of the construction of the movable rack;

FIG. 11 is a schematic diagram of a ten-byte structure;

FIG. 12 is a sectional view A-A of FIG. 11;

fig. 13 is a schematic structural view of an upper portion of the steering shaft;

FIG. 14 is a sectional view A-A of FIG. 13;

FIG. 15 is a schematic view of a weld fork;

FIG. 16 is a left side view of FIG. 15;

FIG. 17 is a top view of FIG. 15;

FIG. 18 is a schematic structural view of the handle adjustment assembly;

fig. 19 is a schematic view showing the connection of the welding yoke, ten bytes, and the upper portion of the steering shaft.

The meaning of the reference symbols in the figures: 1. spline shaft, 2, gasket, 3, lower fixed bracket, 4, steering column, 5, U-shaped plate, 6, upper fixed bracket, 7, lower bracket, 8, first cylindrical pin, 9, movable rack, 10, fixed rack, 11, operating rod, 12, second cylindrical pin, 13, upper bracket, 14, upper steering shaft, 15, pin shaft, 16, shaft circlip, 17, first bearing, 18, inner spacer, 19, third cylindrical pin, 20, cross, 21, welding fork, 22, spline housing, 23, collapse steel belt, 24, positioning safety block, 25, locking bolt, 26, locking nut, 29, stop spring, 30, connecting bolt, 31, connecting nut, 32, second bearing, 33, lower mounting bracket, 34, plastic gasket, 35, fixed cam, 36, upper mounting bracket, 37, sliding cam, 38, nylon, 39, handle, 131, 30, connecting bolt, 31, 32, second bearing, 33, lower mounting bracket, 34, plastic gasket, 35, fixed cam, 36, upper mounting bracket, 37, sliding cam, 38, nylon, 39, handle, 131, 35, nylon, and the like, First cylindrical hole, 132, second cylindrical hole, 133, cylindrical pin hole, 134, bearing hole, 701, third cylindrical hole, 702, fourth cylindrical hole, 401, hole, 111, fifth cylindrical hole, 101, sixth cylindrical hole, 901, seventh cylindrical hole.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 and 2, the utility model discloses a vehicle steering column assembly with turnover function, which comprises an upper bracket component, a lower bracket component, a steering shaft lower component, an upper mounting bracket component, a lower mounting bracket component and a handle adjusting component, wherein the upper bracket component comprises a movable rack 9, an operating rod 11, a second cylindrical pin 12, a third cylindrical pin 19, an upper bracket 13, a steering shaft upper portion 14, a shaft circlip 16, a first bearing 17 and an inner spacer 18, the steering shaft upper portion 14 is arranged on the first bearing 17 in a transition fit manner, and is axially fixed by the shaft circlip 16, the first bearing 17 is arranged on the upper bracket 13 in an interference fit manner, the movable rack 9 is arranged on the upper bracket 13 by the cylindrical pin 12 and can freely swing around the cylindrical pin 12, the operating rod 11 is arranged on the upper bracket 13 by the cylindrical pin 19 and can freely swing around the cylindrical pin 19, the movable rack 9 is always placed on the operating rod 11; the lower support assembly comprises a lower fixing support 3, a steering column 4, an upper fixing support 6, a lower support 7, a first cylindrical pin 8, a fixing toothed plate 10 and a plastic liner 34, the steering column 4 is connected with the lower support 7 through a die-casting process, the lower fixing support 3 and the upper fixing support 6 are arranged on the steering column 4 through welding, the plastic liner 34 is arranged on the lower fixing support 3 through a rectangular groove, the fixing toothed plate 10 is fixed on the lower support 7 through the first cylindrical pin 8, and the lower support 7 is connected with an upper support 13 through two pin shafts 15; the steering shaft lower part assembly comprises a spline shaft 1, a gasket 2, a welding fork 21, a spline housing 22 and a second bearing 32, wherein the welding fork 21 is arranged on the spline housing 22 through welding, the second bearing 32 is arranged on the spline shaft 1 through interference fit, nylon is injected on a sliding spline part of the spline shaft 1 and is tightly matched with the spline housing 22, the nylon freely stretches and retracts when friction resistance is overcome, and the welding fork 21 is connected with the steering shaft upper part 14 through a cross joint 20; the upper mounting bracket assembly comprises a U-shaped plate 5, a crumple steel belt 23, a positioning safety block 24 and an upper mounting bracket 36, wherein the U-shaped plate 5 is arranged on the upper mounting bracket 36 through welding, the positioning safety block 24 is arranged on the upper mounting bracket 36 through injection molding, and the crumple steel belt 23 is arranged on the positioning safety block 24 through the U-shaped plate 5; the lower mounting bracket assembly comprises a connecting bolt 30, a connecting nut 31 and a lower mounting bracket 33, and the lower mounting bracket 33 is connected with the lower fixing bracket 3 through the connecting bolt 30 and the connecting nut 31; handle adjusting part includes locking bolt 25, lock nut 26, stop spring 29, fixed cam 35, slide cam 37, nylon packing ring 38, handle 39, slide cam 37 interference fit sets up on handle 39, locking bolt 25 passes handle 39 (slide cam), fixed cam 35, nylon packing ring 38, U template 5, goes up fixed bolster 6, is connected with locking nut 26, stop spring 29 one end sets up in nylon packing ring 38 top, and the other end passes through the draw-in groove and sets up on U template 5, accomplishes the quadriversal regulation of steering wheel through adjustment handle 39.

Referring to fig. 3 and 4, the upper bracket 13 is made of die-cast aluminum alloy, the lower half part is in a long waist square shape, the bearing hole 134 is arranged in the center of the long waist square shape, the upper part of the upper bracket is provided with a pair of first ear forks which are symmetrically arranged at two sides of the central line of the bearing hole 134, the outer side planes of the two first ear forks are parallel and are matched with the inner side planes of the two second ear forks on the lower bracket 7, the first ear forks are provided with coaxial first cylindrical holes 131 which are connected with the lower bracket 7 through pin shafts 15 and can freely turn around the pin shafts 15, a ladder-shaped frame is arranged at the rectangular edge at one side of the ear forks, the front and rear panels of the ladder-shaped frame are provided with coaxial second cylindrical holes 132, the movable rack 9 is arranged in the ladder-shaped frame through the second cylindrical pins 12 and can freely swing around the second cylindrical pins 12, a first U-shaped groove is arranged between the ladder-shaped frame and the ear forks and is the movable position of the control lever 11, the movable rack 9 is always placed on the control lever 11, a cylindrical pin hole is formed in one side, close to the first ear fork, of the rear side of the trapezoid frame, a second U-shaped groove is formed in the top of the cylindrical pin hole, the operating rod 11 is arranged on the upper support through a third cylindrical pin 19, and a semi-cylindrical body of the operating rod 11 can freely swing in the first U-shaped groove around the third cylindrical pin 19.

As shown in fig. 5 and 6, the lower bracket 7 is made of aluminum alloy die-cast parts, the lower half part is a cylinder, a center hole is matched with the steering column 4, splines are arranged on the outer circle of the connection part of the steering column 4 and the lower bracket 7, three holes 401 are uniformly distributed on the outer circle of the steering column, the lower bracket 7 and the lower bracket 7 are cast into a whole through die-casting, a pair of second ear forks are arranged on the upper part of the lower bracket 7, the inner side planes of the two second ear forks are matched with the outer side planes of the two first ear forks on the upper bracket 13, the second ear forks are symmetrically arranged along the center line of the steering column 4, coaxial third cylindrical holes 701 are arranged on the two second ear forks, a door-shaped frame is arranged on one side of the center line of the two second ear forks, coaxial fourth cylindrical holes 702 are arranged on the two side panels of the door-shaped frame, and the fixed toothed plate 10 is arranged on the lower bracket 7 through the first cylindrical pin 8.

As shown in fig. 7 and 8, the operating rod 11 is made of an injection molding piece, one end of the operating rod is provided with a cylinder, the center of the operating rod is provided with a fifth cylindrical hole 111, the operating rod 11 is arranged in a second U-shaped groove of the upper support 13 through a third cylindrical pin 19 and can freely swing in a first U-shaped groove around the third cylindrical pin 19, the other end of the operating rod is provided with an operating handle, the middle bottom of the operating rod is provided with a plane, the face of the operating rod is provided with a progressive curvature inclined plane which is matched with a hump curved surface of the movable rack 9, and the operating rod 11 is pushed or pulled forwards or backwards to play a role in engaging or disengaging the movable rack 9 and the fixed toothed plate 10.

As shown in fig. 9, the fixed toothed plate 10 is made of powder metallurgy, two surfaces of the fixed toothed plate are parallel planes, sixth cylindrical holes 101 are formed in two ends of the fixed toothed plate in the long distance direction of the planes, the fixed toothed plate is fixed in a portal frame of the lower bracket 7 through the first cylindrical pin 8, and a full-tooth spline which is an inner concave arc surface is arranged on one side of each of the two sixth cylindrical holes 101.

As shown in fig. 10, the movable rack 9 is made of powder metallurgy, two sides of the movable rack are parallel planes, one end of the long-distance direction of the plane is set to be a seventh cylindrical hole 901, the movable rack 9 is arranged in the trapezoidal frame of the upper support 13 through the second cylindrical pin 12, the movable rack 9 can freely swing in the trapezoidal frame of the upper support 13 around the second cylindrical pin 12, one side of the short-distance direction of the plane is provided with half of the racks with convex arc surfaces matched with the splines of the fixed toothed plate 10, the other side of the short-distance direction of the plane is provided with a camel-shaped curved surface, and the other side of the short-distance direction of the plane is matched with the curved surface of the operating rod 11 in a forward and backward mode to determine the engagement or disengagement of the movable rack 9 and the fixed toothed plate 10.

As shown in fig. 11 and 12, the cross-shaped portion 20 is made of a nylon injection molding, and is molded into a semi-body, and is assembled into a whole, the cross-shaped portion is shaped like a semi-sphere, the diameter of the cross-shaped groove is shaped like two crossed semi-cylinders, and is adapted to the inner diameters of the 14-opening yoke on the upper portion of the steering shaft and the 21-opening yoke of the welding yoke, and two sides of the center of the cross-shaped groove are provided with mutually symmetrical inclined planes, and are adapted to the inclined planes on two sides of the 14-opening yoke on the upper portion of the steering shaft and the third yoke of the welding yoke 21, so as to connect the upper portion 14 of the steering shaft and the lower portion assembly of the steering shaft, transmit steering torque, and realize the purpose that the upper portion 14 of the steering shaft turns 90 degrees upwards.

Referring to fig. 13 and 14, a workpiece is cut by round steel on the upper portion 14 of the steering shaft, a conical surface and a spline are arranged at one end of the steering shaft, the conical surface and the spline are matched with a steering wheel, a thread is arranged at the shaft end and matched with a fastening nut, an opening yoke is arranged at the other end of the steering shaft, the aperture of the yoke is matched with the inner diameter of a cross groove of the cross joint 20, the thickness of the yoke is matched with the width of the cross groove of the cross joint 20, an opening is arranged at the center of the end portion of the yoke, the width of the opening is three quarters of the aperture, the cross joint 20 can be easily installed, a coaxial second open slot is axially arranged on the open slot, the width of the second open slot is larger than the thickness of an ear fork of the welding fork 21, the depth of the second open slot is larger than the outer diameter of the welding fork 21, so that the upper portion 14 of the steering shaft cannot interfere with the outer diameter of the welding fork 21 when the cross joint 20 is turned over for 90 degrees, a bearing stop is arranged beside the opening yoke, the upper portion 14 of the steering shaft is axially fixed on the upper bracket 13 through a first bearing 17, the second open slot has the width of 1.25 times of the thickness of the opening fork, the depth of the second open slot is 1.15 times of the outer diameter of the open joint fork, the center of the open joint fork is a cylindrical hole, and two ends of the cylindrical hole are provided with inclined planes which are symmetrically distributed relative to the central axis and inwards incline towards the center.

As shown in fig. 15-17, the welding fork 21 is made of a precision forging piece by cutting, one end of the welding fork is a cylinder and is matched with the diameter of the unthreaded hole of the spline housing 22, the other end of the welding fork is provided with an ear fork, the thickness of the ear fork is matched with the width of the cross groove of the cross joint 20, the diameter of the cross groove of the cross joint 20 is matched with the hole of the ear fork, the end part of the ear fork is provided with an opening, and the opening width is three-quarters of the hole diameter, so that the cross joint 20 can be easily arranged.

Through the above-mentioned mechanism setting, open the handle 39, the tubular column 4 can carry on the regulation of the direction of height through the rectangular groove of the upper fixed bolster 6, lower fixed bolster 3, can carry on the regulation of the angle direction through the arc-shaped groove of the U-shaped board 5, on the basis of satisfying the four-way adjustable of the steering wheel, newly add a pair of adjustable supports (upper bracket 13 and lower bracket 7), and link together through the axis pin 15, set up the movable rack 9 and the control rod 11 on the upper bracket 13, connect through the respective second cylindrical pin 12, the third cylindrical pin 19, and swing around the respective second cylindrical pin 12, the third cylindrical pin 19, set up the fixed pinion rack 10 on the lower bracket 7, connect through the first cylindrical pin 8, control the control rod 11 to push forward, the movable rack 9 meshes with the fixed pinion rack 10, the steering wheel is in working condition, control the control rod 11 to pull backward, the movable rack 9 breaks away from the fixed pinion 10, the steering wheel can not work and can upwards turn over 90 degrees around the pin shaft 15, at this time, the upper part 14 of the steering shaft can drive the lower part assembly of the steering shaft to axially move through the cross joint 20, and in order to prevent interference, the lower part assembly of the steering shaft is arranged to be of a telescopic structure, so that the smooth implementation of the turning function of the steering wheel is ensured.

The utility model discloses an useful part lies in: control rod 11, cross section 20 all adopt the nylon materials, and similarly, flexible spline tooth surface also scribbles the nylon layer, because the nylon characteristic makes the nature, no matter the steering wheel upwards overturns 90 when during operation transmission steering torque still needs, when bearing radial and axial impact, has played the elimination vibration undoubtedly, avoids producing the beneficial effect of abnormal sound. The steering wheel is added with a turning function, the application range of the passenger car is expanded, and the steering wheel is undoubtedly good in favor under the large background of the current social development.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. An automobile steering column assembly with a turnover function comprises a body and is characterized in that the body comprises an upper support component, a lower support component, a steering shaft lower component, an upper mounting support component, a lower mounting support component and a handle adjusting component, wherein the upper support component comprises a movable rack, an operating rod, a second cylindrical pin, a third cylindrical pin, an upper support, a steering shaft upper part, a shaft elastic retainer ring, a first bearing and an inner retainer ring, an open joint fork is arranged at one end of the steering shaft upper part, the first bearing is arranged at the middle part of the steering shaft upper part close to one side of the open joint fork through excessive fit and is fixed in the upper support through the shaft elastic retainer ring, the first bearing is arranged in the upper support through interference fit, the movable rack is movably fixed on the upper support through the second cylindrical pin, the operating rod is fixed on the upper support through the third cylindrical pin, the movable rack is arranged above the operating rod, the lower support component comprises a lower fixed support, a steering column, an upper fixed support, a lower support, a first cylindrical pin, a fixed toothed plate and a plastic liner, the lower support is arranged at one end of the steering column through die casting, the lower fixed support is arranged at one end, far away from the lower support, of the steering column through welding, a rectangular groove is formed in the lower portion of the lower fixed support, the plastic liner is arranged on the lower fixed support through the rectangular groove, the upper fixed support is arranged at one end, close to the lower support, of the steering column through welding, the fixed toothed plate is fixed to the upper portion of the lower support through the first cylindrical pin, the lower portion of the lower support is connected with the lower portion of the upper support through two pin shafts, the lower steering shaft component comprises a spline shaft, a gasket, a welding fork, a spline sleeve and a second bearing, and the spline shaft is arranged in the steering column, the improved steering column structure is characterized in that one end of the spline housing is provided with a spline, the other end of the spline housing is provided with a unthreaded hole, the welding fork is arranged in the unthreaded hole, close to one end of the lower support, of the spline housing through welding, the welding fork is connected with the upper portion of a steering shaft through a cross joint, one end of the spline shaft is provided with a sliding spline, the sliding spline is tightly matched with the spline housing through injection-molded nylon, the second bearing is arranged at one end, far away from the sliding spline, of the spline shaft through interference fit, the upper mounting support assembly is symmetrically arranged on the front side and the rear side of the steering column, the upper mounting support assembly comprises a U-shaped plate, a crumpling steel belt, a positioning safety block and an upper mounting support, the U-shaped plate is arranged on the upper mounting support through welding, the positioning safety block is arranged on the upper mounting support through injection molding, the crumpling steel belt is arranged on the positioning safety block, the lower mounting support assembly comprises a connecting bolt, Connecting nut, lower installing support is fixed in down on the fixed bolster through connecting bolt, connecting nut, handle adjusting part includes locking bolt, lock nut, stop spring, fixed cam, sliding cam, nylon packing ring and handle, nylon packing ring symmetry sets up in the U template outside, U template front side be provided with fixed cam in the nylon packing ring, the fixed cam outside is fixed with sliding cam, the sliding cam outside is provided with the handle, locking bolt passes the nylon packing ring of handle, sliding cam, fixed cam, U template front side, the nylon packing ring of U template rear side in proper order to lock through lock nut, stop spring one end sets up in nylon packing ring top, and the other end passes through the draw-in groove and sets up on the U template.

2. The automobile steering column assembly with the turnover function according to claim 1, wherein the upper bracket is made of aluminum alloy through die casting, the lower portion of the upper bracket is arranged in a rectangular shape, the rectangular shape is centrosymmetrically arranged in two bearing holes, the upper portion of the upper bracket is provided with a pair of first ear forks, the first ear forks are symmetrically arranged on two sides of the central line of the bearing holes, the outer side planes of the first ear forks are parallel, the first ear forks are provided with coaxial first cylindrical holes for connecting the lower bracket, a trapezoidal frame is arranged above the first ear forks and comprises a front panel and a rear panel, the front panel and the rear panel are respectively provided with second cylindrical holes for movably fixing the movable racks, the two second cylindrical holes are coaxially arranged, and a first U-shaped groove is arranged between the trapezoidal frame and the first ear forks, a cylindrical pin hole used for movably fixing the operating rod is formed in one side, close to the first ear fork, of the rear side of the trapezoidal frame, and a second U-shaped groove is formed in the top of the cylindrical pin hole.

3. The automobile steering column assembly with the turnover function according to claim 2, wherein the lower bracket is made of aluminum alloy through die casting, the lower end of the lower bracket is provided with a first cylinder, a through hole is arranged in the first cylinder, the through hole corresponds to the steering column, splines are arranged on the connection part of the steering column and the lower bracket, three holes are uniformly distributed on the outer circle of the steering column, the steering column is connected with the lower bracket through die casting, a pair of second ear forks are arranged on the upper part of the lower bracket, the second ear forks are symmetrically arranged along the central line of the steering column, the inner side surfaces of the two second ear forks correspond to the outer side surface of the first ear fork on the upper bracket, coaxial third cylindrical holes are arranged on the two second ear forks, and a door-shaped frame is arranged on one side of the central line of the second ear forks, and the two side surfaces of the door-shaped frame are provided with coaxial fourth cylindrical holes for fixing the fixed toothed plate on the lower support.

4. The automobile steering column assembly with the turnover function according to claim 3, wherein the operating rod is made by injection molding, a second cylinder is arranged at one end of the operating rod, a fifth cylindrical hole for fixing the operating rod in a second U-shaped groove of the upper bracket is arranged in the middle of the cylinder, the other end of the operating rod is arranged as an operating handle, the middle bottom of the operating rod is arranged as a plane, and the plane is arranged as a progressive curvature inclined plane.

5. The automobile steering column assembly with the turnover function according to claim 4, wherein the fixed toothed plate is made by powder metallurgy, the upper surface and the ground surface of the fixed toothed plate are parallel planes, sixth cylindrical holes for fixing the fixed toothed plate on the lower bracket are arranged at two ends of the parallel planes in the long distance direction, a full-tooth spline is arranged on one side of the fixed toothed plate, and the full-tooth spline is arranged in an inwards concave arc surface structure.

6. The automobile steering column assembly with the turnover function according to claim 5, wherein the movable rack is made of powder metallurgy, parallel planes are arranged above and below the movable rack, a seventh cylindrical hole for fixing the movable rack on the upper bracket is arranged at one end of the long distance direction of the parallel planes, a half number of racks are arranged on one side of the short distance of the parallel planes, the half number of racks are arranged in a convex arc surface structure, the half number of racks are matched with full-tooth splines on the fixed toothed plate, the other side of the short distance of the parallel planes is arranged in a double-hump curved surface structure, and the double-hump curved surface structure corresponds to a progressive curvature inclined surface at the middle bottom of the operating rod.

7. The automotive steering column assembly with the roll-over function according to claim 6, wherein the number of teeth of the half rack is half of that of the full-tooth spline.

8. The automobile steering column assembly with the turnover function according to claim 1, wherein the cross joint is made of nylon by injection molding and is integrated into a whole when being assembled, a hemisphere is arranged outside the cross joint, a cross groove is arranged on the cross joint, the groove diameter of the cross groove is of a semi-cylinder structure with two crossed crosses, and two inclined planes are symmetrically arranged on two sides of the center of the cross groove.

9. The automobile steering column assembly with the turnover function according to claim 8, wherein the upper portion of the steering shaft is made by round steel cutting, the end of the upper portion of the steering shaft, which is far away from the open yoke, is provided with a conical surface and a spline for mounting a steering wheel, the aperture of the open yoke corresponds to the inner diameter of a cross groove of a cross joint, the thickness of the open yoke corresponds to the groove width of the cross groove, the end of the open yoke, which is far away from the spline, is provided with a first open slot, the width of the first open slot is three-fourths of the aperture of the open yoke, the end of the open yoke, which is far away from the first open slot, is provided with a second open slot, the first open slot and the second open slot are arranged on the same axis, the end of the upper portion of the steering shaft, which is close to the open yoke, is provided with a bearing stop, and the center of the open yoke is provided with a cylindrical hole, inclined planes which incline inwards towards the center are arranged at two ends of the cylindrical hole.

10. The automobile steering column assembly with the turnover function according to claim 9, wherein the welding fork is made of a finish forged part through cutting, one end of the welding fork is set to be a cylinder, the outer diameter of the cylinder corresponds to the diameter of the unthreaded hole of the spline housing, the other end of the welding fork is set to be a third ear fork, a cylindrical hole is arranged in the middle of the third ear fork, the thickness of the third ear fork corresponds to the groove width of a cross groove in a cross shape, a third opening groove is arranged at the end, far away from the cylinder, of the third ear fork, the width of the third opening groove is three quarters of the inner diameter of the third ear fork, the thickness of the third ear fork is smaller than the groove width of the second opening groove, and inclined planes inclining inwards towards the center are arranged at the two ends of the cylindrical hole.