CN207403801U - Extreme position noise reduction steering gear - Google Patents

Abstract

The utility model provides a kind of extreme position noise reduction steering gear, including：Including tooth sector, steering rack, nylon noise reducing sleeve, left steering pull rod and right turn pull rod, tooth sector and steering rack engaged transmission；Left steering pull rod includes ball seat, ball pin and pull rod respectively with right turn pull rod, ball seat includes the boss and spherical groove of integral structure, the thinner part of boss diameter is provided with external screw thread, threaded hole is offered at the both ends of steering rack, boss is threadedly coupled with steering rack, the bulb end /V of ball pin is threadedly coupled pull rod inside of spherical groove, the screw rod end of ball pin；Nylon noise reducing sleeve is unclosed circular ring structure, and it is set in the thicker part of boss diameter, both ends positioned at internal diameter in the inner ring of nylon noise reducing sleeve protrude columned limit protrusion respectively, and the position that two limit protrusions are corresponded in the thicker part of boss diameter offers limit hole respectively.Using the utility model can reduce steering gear reach capacity position when the noise that generates.

Description

Extreme position noise reduction steering gear

Technical field

The utility model is related to automobile steering device technology fields, more specifically, are related to a kind of extreme position noise reduction and turn to Device.

Background technology

Abnormal sound problem is that one of manual steering gear FAQs and main engine plants compare concern, is even more steering gear Production firm be eager solve obstinate sex chromosome mosaicism, wherein the shock abnormal sound of extreme position be even more be difficult to effectively solve.

During consumer drives a car traveling, happening for limit turning is unavoidably had, when steering wheel turns When moving Derivative limit on the left or on the right, the rack of steering assembly just runs to Derivative limit on the left or on the right, at this point, the confined planes of housing and pull rod ball pin are just It can hit, since the material of two kinds of parts is respectively cast aluminium and steel alloy, the shock sound of generation is very big, and comfort makes consumer Be difficult to receive, and during shock, generate great influence to the intensity of both sides' part, it is long-term in this way, housing have can It can crack, influence security.

Therefore, how to be efficiently modified steering gear, improve the direction that the comfort of extreme position is actively studied as industry.

Utility model content

In view of the above problems, the purpose of this utility model is to provide a kind of extreme position noise reduction steering gear, above-mentioned to solve The problem of pointed by background technology.

Extreme position noise reduction steering gear provided by the utility model, including tooth sector, steering rack, nylon noise reducing sleeve, Left steering pull rod and right turn pull rod, tooth sector and steering rack engaged transmission；Left steering pull rod is distinguished with right turn pull rod Including ball seat, ball pin and pull rod, ball seat includes the boss and spherical groove of integral structure, and the thinner part of boss diameter is provided with External screw thread offers threaded hole at the both ends of steering rack, and boss is threadedly coupled with steering rack, and the bulb end /V of ball pin exists Inside of spherical groove, the screw rod end of ball pin are threadedly coupled pull rod；Nylon noise reducing sleeve is unclosed circular ring structure, and is set in boss The thicker part of diameter, the both ends positioned at internal diameter in the inner ring of nylon noise reducing sleeve protrude columned limit protrusion respectively, The position for corresponding to two limit protrusions in the thicker part of boss diameter offers limit hole respectively.

Furthermore it is preferred that structure be that extreme position noise reduction steering gear further includes the shell being set on steering rack, is drawing It is arranged with protective cover between bar and shell, the bulb end of ball seat and ball pin is wrapped in protective cover.

Compared with prior art, extreme position noise reduction steering gear provided by the utility model, by steering rack with turn Nylon noise reducing sleeve is added between pull rod, when steering gear reaches Derivative limit on the left or on the right position, the housing of nylon noise reducing sleeve and steering gear It mutually hits, generation metal strike between housing and steering linkage is avoided to cause abnormal sound；Meanwhile nylon noise reducing sleeve passes through certainly The cylindrical limit protrusion of symmetrical two of body, cooperation assembling is carried out with symmetrical two limit holes in steering linkage, can be effective Fixed nylon noise reducing sleeve can not be freely rotated in axial direction and the degree of freedom of radial direction, another its, prevent nylon noise reducing sleeve from coming off, can also protect Card nylon noise reducing sleeve can bear the shock of housing always, will not damage.

Description of the drawings

By reference to the explanation below in conjunction with attached drawing, and with the utility model is more fully understood, this practicality is new The other purposes and result of type will be more apparent and should be readily appreciated that.In the accompanying drawings：

Fig. 1 is the overall structure diagram according to the extreme position noise reduction steering gear of the utility model embodiment；

Fig. 2 is the partial enlarged view of Fig. 1；

Fig. 3 is the structure diagram according to the ball seat of the utility model embodiment；

Fig. 4 is the structure diagram according to the nylon noise reducing sleeve of the utility model embodiment.

Reference numeral in figure includes：Tooth sector 1, steering rack 2, steering linkage 3, ball seat 31, boss 311, /V Hole 3111, spherical groove 312, ball pin 32, pull rod 33, nylon noise reducing sleeve 4, limit protrusion 41, housing 5, protective cover 6.

Specific embodiment

Specific embodiment of the utility model is described in detail below with reference to attached drawing.

Fig. 1 and Fig. 2 respectively illustrates the overall structure of the extreme position noise reduction steering gear according to the utility model embodiment With local structure for amplifying.

As depicted in figs. 1 and 2, extreme position noise reduction steering gear provided by the utility model, including：Tooth sector 1 turns to Rack 2, steering linkage and nylon noise reducing sleeve 4, tooth sector 1 and 2 engaged transmission of steering rack, drive 2 or so shifting of steering rack Dynamic, the quantity of steering linkage is two, is that left steering is drawn positioned at 2 left side of steering rack positioned at the left and right sides of steering rack 2 Bar is right turn pull rod 3 positioned at 2 right side of steering rack, and the structure of left steering pull rod is identical with the structure of right turn pull rod 3, Its structure is illustrated by taking right turn pull rod 3 as an example, the structure of left side left steering pull rod can similarly obtain.

Fig. 3 shows the structure of the ball seat according to the utility model embodiment.

As shown in figure 3, right turn pull rod 3 includes ball seat 31, ball pin 32 and pull rod 33, ball seat 31 includes the convex of integral structure Platform 311 and spherical groove 312, the thinner part of 311 diameter of boss are provided with external screw thread, offered at the both ends of steering rack with The internal thread hole of external screw thread cooperation, boss 311 are threadedly connected with steering rack 2, and one end of ball pin 32 has bulb, There is the other end screw thread to form screw rod, and the bulb end /V of ball pin 32 is rotated in spherical groove 312 and in spherical groove 312, The screw rod end of ball pin 32 is threadedly coupled pull rod 33.When tooth sector 1 drives steering rack 2 to move left and right, steering rack 2 drives Steering linkage moves left and right.

Fig. 4 shows the structure of the nylon noise reducing sleeve according to the utility model embodiment.

If Fig. 4 and Fig. 2 are jointly shown, nylon noise reducing sleeve 4 is unclosed circular ring structure, and is set in 311 diameter of boss Thicker part in order to realize the fixation of nylon noise reducing sleeve 4, is distinguished in the inner ring of nylon noise reducing sleeve 4 positioned at the both ends of internal diameter Columned limit protrusion 41 is protruded, the position point of two limit protrusions 41 is corresponded in the thicker part of 311 diameter of boss Limit hole 3111 is not offered, when assembling nylon noise reducing sleeve 4 on boss 311, limit protrusion 41 is caught in limit hole 3111, from And nylon noise reducing sleeve 4 is fixed on boss 311, by the cooperation of limit hole 3111 and limit protrusion 41, moreover it is possible to limit nylon Noise reducing sleeve 4 makes it that can not be freely rotated in axial direction and the degree of freedom of radial direction, can effective means nylon noise reducing sleeve 4 from boss 311 On come off.

With continued reference to Fig. 2, shell 5 is arranged on steering rack 2, protective cover is arranged between pull rod 33 and shell 5 6, the bulb end of ball seat 31 and ball pin 32 is wrapped in protective cover 6, protective cover 6 play prevent the junction of ball seat and ball pin 32 into Ash or the effect of water inlet, protective cover 6 are specially bellows.

The steering rack of existing steering gear when being moved to extreme position, ball seat can be set in it is outer on steering rack Shell collides, since ball seat and shell are metal material, the sound of metal bump can be sent, generates larger make an uproar Sound, and the utility model and difference, when steering rack 2 is moved to extreme position, nylon noise reducing sleeve 4 is contacted with shell 5, by It is non-metallic material in nylon noise reducing sleeve 4, therefore, the noise generated during collision can be reduced.

The above is only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to In this, in the technical scope that any one skilled in the art discloses in the utility model, variation can be readily occurred in Or replace, it should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be described with power Subject to the protection domain of profit requirement.

Claims (2)

1. a kind of extreme position noise reduction steering gear, including tooth sector and steering rack, the tooth sector and the steering tooth Item engaged transmission, which is characterized in that the extreme position noise reduction steering gear further includes nylon noise reducing sleeve, left steering pull rod and right-hand rotation To pull rod；Wherein, the left steering pull rod includes ball seat, ball pin and pull rod, the ball seat bag respectively with the right turn pull rod The boss and spherical groove of integral structure are included, the thinner part of the boss diameter is provided with external screw thread, in the steering rack Both ends offer threaded hole, the boss is threadedly coupled with the steering rack, and the bulb end /V of the ball pin is described Inside of spherical groove, the screw rod end of the ball pin are threadedly coupled the pull rod；The nylon noise reducing sleeve is unclosed circular ring structure, And the thicker part of the boss diameter is set in, the both ends positioned at internal diameter in the inner ring of the nylon noise reducing sleeve protrude respectively There is columned limit protrusion, the position that two limit protrusions are corresponded in the thicker part of the boss diameter offers respectively Limit hole.

2. extreme position noise reduction steering gear according to claim 1, which is characterized in that further include and be set in the steering tooth Shell on item, is arranged with protective cover between the pull rod and the shell, and the ball seat and the bulb end of the ball pin are wrapped It is rolled in the protective cover.