CN212861603U

CN212861603U - Electric power steering column bolt assembly fixture

Info

Publication number: CN212861603U
Application number: CN202021028675.4U
Authority: CN
Inventors: 李卫彤; 陈荣; 张云彦; 吴少威
Original assignee: Heshi Industrial Technology Co ltd
Current assignee: Heshi Industrial Technology Co ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2021-04-02
Anticipated expiration: 2030-06-05

Abstract

The utility model discloses an electronic power assisted steering tubular column bolt assembly fixture, including base and positioner, seted up the bearing mounting hole on the base, positioner includes one-way bearing, pivot and locating piece, and one-way bearing installs in the bearing mounting hole, and the free rotation direction of one-way bearing is opposite with the tightening direction of bolt, and the lower extreme of pivot is connected to the inner circle of one-way bearing, and the locating piece is installed in the upper end of pivot, has seted up first locating hole and L type location breach on the locating piece. The lower extreme of helping hand axle is cup jointed in first locating hole location, the lower extreme of L type location breach can support the round pin pipe assembly, during the assembly bolt, under one-way bearing's restriction, the pivot can't rotate along the tightening direction of bolt, the workman just can fix steering column without big strength, rotate the pivot, drive steering column and rotate, thereby can be in proper order the assembly bolt on steering column, the assembly quality of bolt can be guaranteed to this assembly fixture, the assembly efficiency of improvement bolt.

Description

Electric power steering column bolt assembly fixture

Technical Field

The utility model relates to an electric power steering system field, in particular to electric power steering tubular column bolt assembly fixture.

Background

The steering column is an important component in an electric power steering system, and can be connected with a steering gear through an intermediate shaft, so that the force applied to a steering wheel is transmitted to wheels through the steering gear. FIG. 1 is a schematic structural diagram of a steering column, which includes an upper protection tube, a lower protection tube, a steering shaft, a power-assisted shaft, a housing, and the like, wherein the upper protection tube is movably and adjustably sleeved on the lower protection tube, and the locking force of the upper protection tube sleeved on the lower protection tube is adjusted by an adjusting handle; the lower protective tube is installed on the shell through the cover plate, the power-assisted shaft is installed in the shell, the steering shaft is movably and adjustably sleeved at the upper end of the power-assisted shaft, the upper end of the steering shaft penetrates through the upper end of the protective tube assembly and extends out of the upper end of the steering shaft, the lower end of the power-assisted shaft penetrates through the lower end of the shell and extends out of the lower end of the shell, and the pin tube assembly is installed at the lower end of the shell and can be connected with the. As shown in fig. 1, a plurality of bolt holes are formed in the cover plate and the shell, and the cover plate can be mounted on the shell by assembling bolts in the bolt holes. Among the prior art, the workman is when assembling the bolt, use the fixed steering column of one hand, the bolt is twisted into the bolt hole with pneumatic spanner to the other hand, when pneumatic spanner tightens up the bolt, there is certain effort to the steering column, and steering column's structure is more complicated, the workman need use great strength just can fix steering column reluctantly, steering column can not obtain good location, make the assembly quality of bolt receive the influence, long-time during operation, the workman can be tired out more and more, and work efficiency has also been reduced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an electronic power assisted steering tubular column bolt assembly fixture can well fix a position steering column, improves assembly efficiency.

According to the utility model discloses an electric power steering column bolt assembly fixture, including the base, set up the bearing mounting hole; positioner, including one-way bearing, pivot and locating piece, one-way bearing install in the bearing mounting hole, one-way bearing's free rotation direction is opposite with the tightening direction of bolt, one-way bearing's inner circle is connected the lower extreme of pivot, the locating piece install in the upper end of pivot, first locating hole and L type location breach have been seted up on the locating piece, first locating hole can fix a position and cup joint helping hand axle, L type location breach can fix a position support round pin pipe assembly.

According to the utility model discloses electric power steering column bolt assembly fixture has following beneficial effect at least: assuming that the tightening direction of the bolt is clockwise, the free rotation direction of the one-way bearing is counterclockwise, that is, the inner ring of the one-way bearing can only rotate counterclockwise relative to the outer ring and cannot rotate clockwise relative to the outer ring. When a bolt is assembled, a steering column is arranged on the positioning device, the lower end of the power-assisted shaft is sleeved in the first positioning hole, the lower end of the L-shaped positioning notch can support the pin pipe assembly, when the bolt is screwed into the bolt hole by using a pneumatic wrench, the steering column has a clockwise rotation trend due to the torque received by the steering column, the pin pipe assembly generates pressure on the left side of the side wall of the L-shaped positioning notch, so that the positioning block and the rotating shaft have the clockwise rotation trend, the rotating shaft cannot rotate clockwise under the limitation of the one-way bearing, and the steering column cannot rotate clockwise, so that a worker only needs to slightly hold the upper end of the steering column to prevent the steering column from toppling over, namely the bolt can be screwed into the bolt hole, when one bolt is assembled, the steering column is rotated anticlockwise, the pin pipe assembly generates pressure on the right side of the side wall of the L-shaped positioning notch, and the second bolt can be assembled on the steering column, so that the bolt can be quickly assembled on the steering column, the assembling quality of the bolt can be ensured, and the assembling efficiency of the bolt can be improved.

According to the utility model discloses a some embodiments, a plurality of locating pins are installed to the upper end of pivot, the lower extreme of locating piece seted up a plurality ofly with locating pin position fit's second locating hole. The locating piece passes through the locating pin and installs in the upper end of pivot, when rotating steering column, and locating piece and pivot rotate simultaneously, if need inspect when the inside spare part of this assembly fixture, only need upwards mention the locating piece, make the locating pin break away from the second locating hole can, installation and dismantlement all very convenient and fast.

According to some embodiments of the utility model, the base includes bottom plate and bearing mount pad, the bearing mounting hole set up in the bearing mount pad. The assembling tool can be arranged on the assembling table through the bottom plate, so that a worker can directly assemble the bolt after carrying out an assembling procedure, and the working efficiency is improved.

According to the utility model discloses a some embodiments, the pivot is the step shaft, the pivot is by supreme first pivot, second pivot and the third pivot of including in proper order down, the external diameter size of first pivot, second pivot and third pivot increases progressively in proper order, first pivot is connected one-way bearing's inner circle, the lower extreme of second pivot is used for the location one-way bearing, the lower extreme of third pivot is connected the upper end of bearing mount pad. When the rotating shaft rotates, the one-way bearing can be positioned at the lower end of the second rotating shaft, the one-way bearing is prevented from moving in the vertical direction, the lower end of the third rotating shaft is connected to the upper end of the mounting seat, the mounting seat plays a supporting role for the rotating shaft, after the steering column is mounted on the positioning block, the second rotating shaft cannot generate pressure on the one-way bearing, and the inner ring of the one-way bearing can normally rotate.

According to the utility model discloses a some embodiments, one-way bearing's inner circle is connected through first flat key the lower extreme of pivot, one-way bearing's outer lane is connected through the second flat key bearing mounting hole. The first flat key enables the inner ring of the one-way bearing to be connected to the lower end of the rotating shaft, the second flat key enables the outer ring of the one-way bearing to be connected in the bearing mounting hole, and when the rotating shaft rotates, the inner ring of the one-way bearing rotates along with the rotating shaft.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural view of a steering column;

FIG. 2 is a diagram showing the fitting relationship between the steering column and the assembling tool in the embodiment of the present invention;

fig. 3 is a schematic overall structure diagram of the assembly fixture according to the embodiment of the present invention;

fig. 4 is an exploded view of the assembly fixture according to the embodiment of the present invention.

In the drawings: 100 steering column, 110 upper protective tube, 120 lower protective tube, 130 steering shaft, 140 power-assisted shaft, 150 shell, 160 cover plate, 161 bolt hole, 170 pin tube assembly, 180 adjusting handle, 200 base, 210 bearing mounting seat, 211 bearing mounting hole, 220 bottom plate, 300 positioning device, 310 one-way bearing, 320 rotating shaft, 321 first rotating shaft, 322 second rotating shaft, 323 third rotating shaft, 330 positioning block, 331 first positioning hole, 332L-shaped notch, 400 positioning pin, 500 first flat key and 600 second flat key.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the present number, and the terms greater than, less than, within, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

As shown in fig. 1, the steering column 100 includes an upper protection tube 110, a lower protection tube 120, a steering shaft 130, a power-assisted shaft 140, a housing 150, and the like, wherein the upper protection tube 110 is movably and adjustably sleeved on the lower protection tube 120, and the locking force of the upper protection tube 110 sleeved on the lower protection tube 120 is adjusted by an adjusting handle 180; the lower guard tube 120 is installed on the housing 150 through the cover plate 160, the power-assisted shaft 140 is installed on the housing 150, the steering shaft 130 is movably and adjustably inserted into the upper end of the power-assisted shaft 140, the upper end of the steering shaft 130 penetrates through the upper end of the guard tube assembly, the lower end of the power-assisted shaft 140 penetrates through the lower end of the housing 150, the pin tube assembly 170 is installed at the lower end of the housing 150, and the pin tube assembly 170 can be connected with the intermediate shaft. As shown in fig. 1, a plurality of bolt holes 161 are formed in both the cover plate 160 and the housing 150, and the cover plate 160 can be mounted on the housing 150 by fitting bolts into the bolt holes 161.

Referring to fig. 2 to 4, the embodiment of the utility model provides an electric power steering column bolt assembly fixture, including base 200 and positioner 300, bearing mounting hole 211 has been seted up on the base 200, positioner 300 includes one-way bearing 310, pivot 320 and locating piece 330, one-way bearing 310 is installed in bearing mounting hole 211, the free rotation direction of one-way bearing 310 is opposite with the tightening direction of bolt, the lower extreme of pivot 320 is connected to the inner circle of one-way bearing 310, locating piece 330 is installed in the upper end of pivot 320, first locating hole 331 and L type location breach 332 have been seted up on the locating piece 330. Assuming that the tightening direction of the bolt is clockwise, the free rotation direction of the one-way bearing 310 is counterclockwise, that is, the inner ring of the one-way bearing 310 can only rotate counterclockwise relative to the outer ring, but cannot rotate clockwise relative to the outer ring. When assembling the bolt, the steering column 100 is installed on the positioning device 300, the first positioning hole 331 is sleeved on the lower end of the assisting shaft 140, the lower end of the L-shaped positioning notch 332 can support the pin pipe assembly 170, when the bolt is screwed into the bolt hole 161 by using a pneumatic wrench, the steering column 100 tends to rotate clockwise due to the torque applied to the steering column 100, the pin pipe assembly 170 presses the left side of the side wall of the L-shaped positioning notch 332, so that the positioning block 330 and the rotating shaft 320 tend to rotate clockwise, the rotating shaft 320 cannot rotate clockwise under the restriction of the one-way bearing 310, the steering column 100 cannot rotate clockwise, so that a worker only needs to lightly hold the upper end of the steering column 100 to prevent the steering column 100 from toppling, the bolt can be screwed into the bolt hole 161, when assembling one bolt, the steering column 100 is rotated counterclockwise, and the pin pipe assembly 170 presses the right side of the side wall of the L-shaped positioning notch 332, the positioning block 330 and the rotating shaft 320 rotate anticlockwise, and a second bolt can be assembled on the steering column 100, so that the bolt can be quickly assembled on the steering column 100, the assembling quality of the bolt can be ensured, and the assembling efficiency of the bolt can be improved.

Referring to fig. 3, in some embodiments, base 200 includes a base plate 220 and a bearing mount 210, with a bearing mount hole 211 opening in bearing mount 210. This assembly fixture can install on the assembly bench through bottom plate 220 to after the workman carries out last assembly process, can directly assemble the bolt, improve work efficiency. Referring to fig. 4, in some embodiments, the rotating shaft 320 is a stepped shaft, the rotating shaft 320 sequentially includes a first rotating shaft 321, a second rotating shaft 322, and a third rotating shaft 323 from bottom to top, outer diameters of the first rotating shaft 321, the second rotating shaft 322, and the third rotating shaft 323 sequentially increase in size, the first rotating shaft 321 is connected to an inner ring of the one-way bearing 310, a lower end of the second rotating shaft 322 is used for positioning the one-way bearing 310, and a lower end of the third rotating shaft 323 is connected to an upper end of the bearing mount 210. When the rotating shaft 320 rotates, the one-way bearing 310 can be positioned at the lower end of the second rotating shaft 322, the one-way bearing 310 is prevented from moving in the vertical direction, the lower end of the third rotating shaft 323 is connected to the upper end of the mounting seat, the mounting seat supports the rotating shaft 320, after the steering column 100 is mounted on the positioning block 330, the second rotating shaft 322 cannot generate pressure on the one-way bearing 310, and therefore the inner ring of the one-way bearing 310 can normally rotate.

With continued reference to fig. 4, in some embodiments, a plurality of positioning pins 400 are installed at the upper end of the rotating shaft 320, and a plurality of second positioning holes matched with the positioning pins 400 are formed at the lower end of the positioning block 330. The locating piece 330 is installed in the upper end of the rotating shaft 320 through the locating pin 400, when the steering column 100 is rotated, the locating piece 330 and the rotating shaft 320 rotate simultaneously, if the parts in the assembling tool need to be checked, only the locating piece 330 needs to be lifted upwards, the locating pin 400 is separated from the second locating hole, and the assembling and the disassembling are convenient and fast. In some embodiments, the inner ring of the one-way bearing 310 is coupled to the lower end of the rotating shaft 320 by a first flat key 500, and the outer ring of the one-way bearing 310 is coupled to the bearing mounting hole 211 by a second flat key 600. The first flat key 500 couples the inner race of the one-way bearing 310 to the lower end of the rotation shaft 320, and the second flat key 600 couples the outer race of the one-way bearing 310 to the bearing mounting hole 211, so that the inner race of the one-way bearing 310 rotates along with the rotation shaft 320 when the rotation shaft 320 rotates.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. The utility model provides an electronic power assisted steering tubular column bolt assembly fixture which characterized in that includes:

the base (200) is provided with a bearing mounting hole (211);

positioning device (300), including one-way bearing (310), pivot (320) and locating piece (330), one-way bearing (310) install in bearing mounting hole (211), the free rotation direction of one-way bearing (310) is opposite with the tightening direction of bolt, the inner circle of one-way bearing (310) is connected the lower extreme of pivot (320), locating piece (330) install in the upper end of pivot (320), set up first locating hole (331) and L type location breach (332) on locating piece (330), first locating hole (331) can fix a position and cup joint helping hand axle (140), L type location breach (332) can fix a position support pin pipe assembly (170).

2. The electric power steering column bolt assembling tool according to claim 1, wherein a plurality of positioning pins (400) are mounted at the upper end of the rotating shaft (320), and a plurality of second positioning holes matched with the positioning pins (400) in a positioning manner are formed at the lower end of the positioning block (330).

3. The electric power steering column bolt assembling tool according to claim 1, wherein the base (200) comprises a bottom plate (220) and a bearing mounting seat (210), and the bearing mounting hole (211) is formed in the bearing mounting seat (210).

4. The electric power steering column bolt assembling tool according to claim 3, wherein the rotating shaft (320) is a stepped shaft, the rotating shaft (320) sequentially comprises a first rotating shaft (321), a second rotating shaft (322) and a third rotating shaft (323) from bottom to top, the outer diameters of the first rotating shaft (321), the second rotating shaft (322) and the third rotating shaft (323) are sequentially increased in size, the first rotating shaft (321) is connected with the inner ring of the one-way bearing (310), the lower end of the second rotating shaft (322) is used for positioning the one-way bearing (310), and the lower end of the third rotating shaft (323) is connected with the upper end of the bearing mounting seat (210).

5. The electric power steering column bolt assembling tool according to any one of claims 1 to 4, characterized in that an inner ring of the one-way bearing (310) is connected with the lower end of the rotating shaft (320) through a first flat key (500), and an outer ring of the one-way bearing (310) is connected with the bearing mounting hole (211) through a second flat key (600).