CN201305014Y - Rear section guiding device for a steering column - Google Patents

Abstract

The utility model relates to a rear section guiding device for a steering column, which comprises a main body and a fixed bolt, wherein, the main body is provided with an arc notch, and the notch is matched with the partial cylindrical outer surface of an adjusting part of the steering column, and the adjusting part adopts the axis of a front section steering shaft of the steering column as the center to wrap the front section steering shaft, and the fixed bolt is fixed on the front section steering shaft and passes through the main body, and the fixed bolt and the adjusting part are relatively fixed within a rotating plane of the steering column; in the longitudinal extending direction of an arc long hole on the clamping part of the steering column, the main body is bent into an arc shape, so that the main body is matched with the long hole by moving along with the rail of the long hole.

Description

A kind of back segment guide piece that is used for Steering gear

Technical field

The utility model relates to a kind of back segment guide piece that is used for Steering gear at rotation process.

Background technology

There has been multiple height-adjustable Steering gear to emerge at present.Name be called " location adjusting device of bearing circle " (POSITION ADJUSTING DEVICE FOR STEERING WHEELS), the patent No. be the US Patent of US6189405B1 just introduced a kind of not only can regulate highly but also can regulate length as Figure 14 to Steering gear shown in Figure 16.Wherein, support A comprises fixed support 101 and movable supporting frame 102, and fixed support 101 is fixed on the desired location of automobile, and movable supporting frame 102 is supported by fixed support 101.Groove transposition section A1 is set at the two ends of support A, and the groove transposition section forms the adjustment part, position of bearing circle 105.Particularly, groove transposition section A1 is formed with vertical elongated slot 104 on being arranged on fixed support 101 by the axial elongated slot 103 that is arranged on the movable supporting frame 102, the mobile-bearing plate 102b of the back plate 101a of fixed support 101 and movable supporting frame 102 contacts, thereby the variation range that axial elongated slot 103 and horizontal elongated slot 104 intersect has determined groove transposition section A1.Two groove transposition section are axially being formed on the support A along steering shaft 100 respectively.Relative fixed support 101, along the vertically moving movable supporting frame 102 and just can make the Steering gear inclination of vertical elongated slot 104, promptly with regard to fixed support 101, steering shaft 100 has tilted.Relative fixed support 101, along horizontal elongated slot 103 vertically move movable supporting frame 102, can realize the flexible operation of Steering gear, promptly regulated the height of Steering gear.Yet, when the height of regulating this Steering gear or inclination angle, must be simultaneously the end that is connected Steering gear chaufeur one side, the position of universal-joint 113 on the steering shaft bottom end be adjusted, so, just must reserve certain installing space, so that the hinge-point of universal-joint can move.In addition, also can change because of rotating the inhomogeneous position, angle that causes.Its correction becomes difficult more in addition, or even can't realize.

The utility model content

The purpose of this utility model is to provide a kind of back segment guide piece that is used for Steering gear, and this back segment guide piece is used for the deflection around a fixed axis of Steering gear to be regulated.

For achieving the above object, the utility model is taked following design plan:

A kind of back segment guide piece that is used for Steering gear, comprise a body and a bolt of rear end plate, described body has the recess of a circular arc, a part of cylindrical outer surface of the adjustment component of this recess and Steering gear mates mutually, described adjustment component is that the center is wrapped in described leading portion steering shaft with the axis of the leading portion steering shaft of Steering gear, described bolt of rear end plate is perpendicular to described leading portion steering shaft and pass described body, described bolt of rear end plate and adjustment component be relative fixed in the rotational plane of Steering gear, on the longitudinal extension direction of the slotted hole of the circular arc on the holding part of described Steering gear, described body is bent to circular arc, thereby makes described body mating mutually along the mode and the described slotted hole of the track activity of slotted hole.

The utility model has the advantages that: the body of the utility model posterior segment guide piece moves along the slotted hole of circular arc, while bolt of rear end plate drive adjustment component is done circular arc and is moved, thereby make Steering gear regulate and become possibility around the deflection of a fixed axis, for example, dispose one again and guarantee that adjustment component moves and this circular arc leading portion guide piece concentric with slotted hole along another circular arc, can guarantee that then this Steering gear can be around a fixed axis deflection.

Description of drawings

The structural representation of Steering gear among a kind of embodiment of the present utility model shown in Fig. 1;

Fig. 2 is the lateral plan of Steering gear shown in Fig. 1, and the Steering gear among the figure is positioned at the top adjusting position;

Fig. 3 is the lateral plan of Steering gear shown in Fig. 1, and the Steering gear among the figure is positioned at the intermediate regulations position;

Fig. 4 is the lateral plan of Steering gear shown in Fig. 1, and the Steering gear among the figure is positioned at the bottom adjusting position;

The back segment hold assembly of the holding device of the utility model shown in Fig. 5;

The leading portion hold assembly of the holding device of the utility model shown in Fig. 6;

The one cover back segment guide piece of the utility model shown in Fig. 7;

Be labeled as the lateral plan of back segment guide piece of the view of A shown in Fig. 8 from Fig. 7;

Fig. 9 is the lateral plan of the forward and backward hold assembly of the utility model, and both relative positions are corresponding to the installation site of reality among the figure;

Figure 10 shows the corresponding site of Steering gear among a kind of embodiment of the utility model and each contact point of spring;

The Steering gear of another kind of embodiment of the present utility model has been shown among Figure 11;

Figure 12 is the lateral plan of Steering gear shown in Figure 11;

The scheme drawing that is used for the metal sheet of forced guiding shown in Figure 13 in the utility model;

Figure 14 to Figure 16 shows Steering gear of the prior art and guide frame thereof, and Figure 14 is a lateral plan, and Figure 15 is the partial enlarged view of hold assembly position among Figure 14, and Figure 16 is the cross section view of hold assembly position.

The specific embodiment

Below in conjunction with preferred embodiment the utility model is described in detail, should be noted that, in description described later, although employed term is to select from public term, but the part term then is the applicant to be judged by it and selects, and its detailed meanings should be understood according to the spirit that the utility model desire discloses.Described " preceding " is references object with " back " with bearing circle or chaufeur position, and therefore, described leading portion parts are nearer than the end of bearing circle one side of described back segment member distance Steering gear.

As shown in Figure 1, Steering gear 1 comprises leading portion steering shaft (or steering shaft) 5, adjustment component 2, (fastening bolt 11 as hereinafter described is the leading portion guide piece for holding device (hold assembly 3,4 as hereinafter described), securing device (clamping bar 15 as hereinafter described, fastening bolt 11 etc.) and guide piece, with the body 12 of back segment guide piece, described body 12 is hereinafter referred to as back segment guide piece 12).

The steering handwheel that can connect a meaning not shown in the figures in the front side end (being the top) of leading portion steering shaft 5 antitorquely.Rear side end (i.e. bottom) at leading portion steering shaft 5 then is fixed with a Y-piece 33 that plays the hinge 16 of universal-joint function, and jointed shaft 8 passes Y-piece 33, and bonded assembly is a back segment steering shaft 34 on the hinge 16.Back segment steering shaft 34 in the present embodiment is non-telescoping, and this root back segment steering shaft 34 is also referred to as " turning to arm shaft " usually.Leading portion steering shaft 5 links to each other by the steering transmission linkage that does not illustrate among back segment steering shaft 34 and the figure.

Adjustment component 2 is that the center of circle provides swivel bearing around leading portion steering shaft 5 and for it with the axis 6 of leading portion steering shaft 5.Adjustment component 2 in embodiment illustrated in fig. 1 is sleeve pipes, and adjustment component 2 is fixed on the holding device.

Holding device is made up of cover leading portion (near chaufeur one a side) hold assembly 3 and cover back segment (away from a chaufeur) hold assembly 4.Two cover clamping parts 3,4 all are fixed on the automobile body of meaning not shown in the figures.

With reference to Fig. 5, hold assembly 4 can take the shape of the letter U, comprise diapire 19, two side 21,21 ' and two place's fixed parts 23,23 ', two side 21,21 ' is connected to the both sides of diapire 19, and two fixed parts 23,23 ' are connected to two side 21, a side 21 ', relative with diapire 19.Hold assembly 4 is fixed on the automobile body by two fixed parts 23,23 '.

With reference to Fig. 6, hold assembly 3 can take the shape of the letter U, comprise diapire 18, two side 20,20 ' and two place's fixed parts 22,22 ', two side 20,20 ' is connected to the both sides of diapire 18, and two fixed parts 22,22 ' are connected to two side 20, a side 20 ', relative with diapire 18.Hold assembly 3 is fixed on the automobile body by two fixed parts 22,22 '.

In the embodiment shown in fig. 1, hold assembly 3,4 all is a metal bending blanked part, and in other embodiment, hold assembly also can be a foundry goods, for example aluminium alloy castings or even Mg alloy castings.In addition, hold assembly 3,4 both can be made into integration, and also can be assembled by a plurality of parts.

When securing device unclamped, bearing circle can be with adjustment component 2 around shaft axis 7 deflections based on the height of hold assembly 3,4 in other words in order to regulate leading portion steering shaft 5.That is to say, take place at grade in fact at the adjusting of adjustment component 2, and behind the securing device locking, adjustment component 2 will no longer change with respect to the deflection angle of hold assembly 3,4.Shown in Fig. 2 to 4 is the Steering gear that is in the different adjustment position.Wherein, securing device is simplified, in addition, known figure for convenience, also omitted some parts of securing device.As can be seen, the position of shaft axis 7 (perpendicular to the paper direction) all can not change at different adjusting positions from Fig. 2 and Fig. 4.

To the embodiment shown in Figure 4, securing device is that a cover clamps mechanism at Fig. 2, and it comprises a fastening bolt 11 vertical with leading portion steering shaft 5.In addition, according to following description, this root fastening bolt 11 has also played the effect of leading portion guide piece simultaneously.A clamping bar 15 can be that rotate at the center with the axis at fastening bolt 11 places.Clamping bar 15 can trigger does not have the cam that shows among the figure, this cam then can with a terminal pad combined action that is mounted in equally on the fastening bolt 11.By the deflection of clamping bar 15, aforementioned terminal pad can be exerted pressure on the sidewall 20 ' of leading portion hold assembly 3, and a top, and the head of clamping bar 15 for example will be pushed up on the sidewall 20 of leading portion hold assembly 3 and clamped.So, under the mutual action of adjustment component 2 sidewalls, sidewall 20,20 ' can be compacted, makes adjustment component 2 be fixed then, promptly and the relative position of 3 of leading portion hold assemblies can not change again.

The leading portion slotted hole 9,9 ' that an arc is respectively arranged on the two side 20,20 ' of leading portion hold assembly 3.They are on the circular arc 13 that radius is R1.The fastening bolt 11 of the securing device vertical with regulating the plane can pass this two slotted holes 9,9 '.Under the released situation of securing device, fastening bolt 11 has also played the effect of leading portion guide piece, promptly guide adjustment component 2 based on leading portion hold assembly 3 along circular arc 13 relative motions.In addition, relative motions promptly at the rotational plane internal fixation, promptly can not take place with adjustment component 2 in fastening bolt 11 on all directions vertical with shaft axis 7.Correspondingly, it can pass a circular hole 35 on the adjustment component 2 joint close, referring to Figure 10.And on the direction parallel with shaft axis 7, relative motion then can take place in 2 of fastening bolt 11 and adjustment component, thereby realizes the locking and the release of securing device.

The back segment slotted hole 10,10 ' that an arc is respectively arranged on the sidewall 21,21 ' of back segment hold assembly 4.They are on the circular arc 14 that radius is R2.Back segment guide piece 12 is fixing by slotted hole 10,10 ', and can be along slotted hole 10, the 10 ' activity of these two circular arcs.Equally, back segment guide piece 12 is also fixed on all directions vertical with shaft axis 7, promptly can relative motions not take place with adjustment component 2.Correspondingly, a circular arc recess 36 is arranged on the back segment guide piece 12 of embodiment shown in Fig. 7 and Fig. 8, a part of cylindrical outer surface of it and adjustment component 2 mates mutually.Adjustment component 2 then is that the axis 6 with steering shaft 5 is that the center is wrapped in leading portion steering shaft 5.In addition, back segment guide piece 12 also comprises perpendicular to steering shaft 5 and passes the bolt of rear end plate of back segment guide piece.At slotted hole 10, on 10 ' the longitudinal extension direction, back segment guide piece 12 will be bent to circular arc, so that coupling slotted hole 10,10 ', referring to Fig. 8.So, just can guarantee that back segment guide piece 12 can be along slotted hole 10,10 ' track activity reaches the purpose of adjusting then.

Guide piece 12 can be with steel or sintered steel as material.Because frictional behaviour is more outstanding, therefore preferably adopt non-metals or plastics to make guide piece 12.On Fig. 9, accurately drawn slotted hole 9,9 ', slotted hole 10,10 '.Slotted hole 9,9 ', slotted hole 10,10 ' extends along circular arc 13,14, and correspondingly, and the contact of the line slotted hole of slotted hole 9,9 ' center of arc 10,10 ' center of arc then is located on the same line.This straight line then overlaps with shaft axis 7.Shaft axis 7 should be positioned at the scope at hinge 16 places and intersect with jointed shaft 8.

Move on the adjusting plane in order to ensure 2 meetings of adjustment component, have at least the sidewall 20,20 ', 21,21 ' of parts to should be smooth contact surface 25,25 ', 26,26 ' in the hold assembly 3,4.In an improvement of the present utility model, one or more in these several contact surfaces can also be elastic construction, guides adjustment component better under the situation that guarantees good contact.Correspondingly, can bend at metal and process punching 27 on the blanked part, thereby be separated out a part of smooth contact surface.Shown on Fig. 6 is exactly the sidewall 20 ' that has the Elastic Contact face 25 ' of punching 27.

Contact surface 25,25 ', 26,26 ' with vertical mutually by the straight line at the place, center of circular arc 13,14.Therefore, these contact surfaces also are orthogonal relation with shaft axis 7.

That is to say that the shaft axis 7 of the Steering gear that the utility model is related is changeless with respect to the position of holding device 3,4.When securing device was released, adjustment component 2 can be carried out limited deflection, so that regulate the height of Steering gear.And meanwhile, need not the parts (what form between adjustment component and the holding device is a kind of rolling bearing that does not have a part) of any formation rotating shaft in shaft axis 7 regions, that is to say that all constitute the parts of rotating shaft all away from shaft axis 7.So, holding device 3,4 just needn't extend to the position at shaft axis 7 places, and can keep certain axial distance with it.

At this, slotted hole 9,9 ', 10,10 ' to leave the spacing distance of Steering gear bearing circle one side end littler than the spacing distance that shaft axis 7 leaves Steering gear bearing circle one side end.

In order to make the motion of parts more smooth and easy,, a spring 17 has been installed on Steering gear particularly in order to avoid ultimate torque.In the embodiment shown in fig. 10, spring 17 acts on contact point 37 on the leading portion hold assembly 3 of holding device on the one hand, then acts on the other hand on the contact point 24 of adjustment component 2.Meanwhile, spring 17 also can guide the motion of back segment guide piece 12.During to adjusted, then spring 17 can apply the power F2 that one makes progress on back segment guide piece 12 in adjustment component 2.When adjustment component 2 was regulated downwards, then spring 17 can apply one downward power F2 ' on back segment guide piece 12.So, back segment guide piece 12 will be subjected to the power F2 consistent with sense of motion all the time, and F2 ' realizes moment balance then in the motion process of adjustment component 2, the stuck situation of adjustment component can not occur.Know figure for convenience, the point of action to power F2 and F2 ' among the figure does not carry out precise marking.The point of action of two bursts of power is located on the same line along circular arc 14.Particular location approximately is the centre at back segment guide piece 12.

In the embodiment shown in fig. 10, spring 17 comprises snapholder 38, snapholder 39 and is connected the sweep 40 of this two snapholder 38,39 respectively.Snapholder 38 acts on the contact point 37 of leading portion hold assembly 3.Snapholder 39 acts on the contact point 24 of adjustment component 2.Be fixed on the jut (not shown) of back segment guide piece 12 at the sweep 40 between two snapholders 38,39 in addition.If adjustment component 2 is done downward motion with respect to leading portion hold assembly 3, then spring 17 will be attempted to move downward at sweep 40, thereby apply power F2 ' on guide piece 12.Same, if adjustment component 2 is done motion upwards with respect to leading portion hold assembly 3, then spring 17 will be attempted upward movement at sweep 40, thereby apply power F2 on guide piece 12.

Spring 17 is tensioning in advance preferably, makes snapholder 39 apply one power towards the direction of snapholder 38, i.e. power F1 on Figure 10.So, when securing device was released, the weight of adjustment component 3 and leading portion steering shaft 5 just can be absorbed.Certainly, also can consider otherwise to set up spring or adopt many springs.

In addition, perhaps with situation that spring 17 cooperates under, can also be chosen in the control process, by a cover self contained system, realize the fixing of rotating shaft locus.Figure 11 and a solution that comes to this shown in Figure 12.Under the simplest situation, can adopt a metal sheet 28, two slotted holes 29 and 30 are arranged on it.Wherein, be inserted with an end of fastening bolt 11 in the slotted hole 29, parts of back segment guide piece 12 then be installed, i.e. an end of bolt in the slotted hole 30.In addition, on metal sheet 28, also have one and back segment hold assembly 4 bonded assembly fixed rotating shafts.In fairly simple structure, rotating shaft can be a circular bore 31 on the metal sheet.The peg 32 that links to each other with back segment hold assembly 4 just is inserted in this circular bore 31.Conversely, rotating shaft also can be a peg that is fixed on the metal sheet 28.This peg will be plugged in the circular bore of back segment hold assembly 4.When deflection has taken place with respect to hold assembly 3,4 in adjustment component 2, because therefore the mandatory guidance motion down of the slotted hole 29,30 of 2 cover guide piecees, 11,12 meetings on metal sheet 28 may guarantee that the locus of shaft axis 7 remains unchanged.

On Steering gear shown in Figure 11, can see the part of spring 17 at dorsal part.Then can see metal sheet 28 in a positive side.When regulating Steering gear, it can play the effect of balancing torque, makes the adjusting of Steering gear become more convenient then.In addition, it is also conceivable that in the both sides of Steering gear all to be equipped with a metal sheet and a spring, perhaps only respectively be equipped with a spring or a metal sheet in the both sides of Steering gear.

The related height-adjustable Steering gear of the utility model has wide range of applications.Except the application shown in the example, can also respective design go out the Steering gear of adjustable length.In this case, holding device 3,4 can be fixed on the another set of holding device.And this covering device can be regulated on the length direction of Steering gear with respect to vehicle body.Use for this class, preferably the back segment steering shaft is designed to stretch.

Though the utility model is described with reference to current specific embodiment, but those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, should understand and wherein can make variations and modifications and do not break away from the utility model in a broad sense, so be not that conduct is to qualification of the present utility model, for example, the U-shaped opening of leading portion hold assembly 3 or back segment hold assembly 4 also can be down.The related Steering gear of the utility model can also be selected the integral type elongated hold assembly that adopts aluminium alloy casting to form.Securing device also can be selected the different structure of description that goes out therewith.For example, realize locking, can also select the locking component that works by form fit for use except frictionally.This is adopted in present technology in a large number.Therefore, as long as in connotation scope of the present utility model, all will drop in the scope of the utility model claims variation, the modification of the above embodiment.

Claims (1)

1, a kind of back segment guide piece that is used for Steering gear, it is characterized in that: comprise a body (12) and a bolt of rear end plate, described body has the recess (36) of a circular arc, a part of cylindrical outer surface of the adjustment component of this recess and Steering gear (2) mates mutually, described adjustment component (2) is that the center is wrapped in described leading portion steering shaft (5) with the axis (6) of the leading portion steering shaft (5) of Steering gear (1), described bolt of rear end plate is perpendicular to described leading portion steering shaft (5) and pass described body (12), described bolt of rear end plate and adjustment component (2) relative fixed in the rotational plane of Steering gear (1), the slotted hole (10 of the circular arc on the holding part of described Steering gear (1), 10 ') on the longitudinal extension direction, described body (12) is bent to circular arc, thereby make described body (12) with can be along slotted hole (10, the mode of track activity 10 ') and described slotted hole (10,10 ') be coupling mutually.

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