CN214240963U

CN214240963U - Novel steering shaft

Info

Publication number: CN214240963U
Application number: CN202120028257.3U
Authority: CN
Inventors: 冯志鹏; 王斌
Original assignee: Hangzhou Hongwu Automobile Parts Co ltd
Current assignee: Hangzhou Hongwu Automobile Parts Co ltd
Priority date: 2021-01-06
Filing date: 2021-01-06
Publication date: 2021-09-21
Anticipated expiration: 2031-01-06

Abstract

The utility model innovatively provides a novel steering shaft, which comprises a fixed sleeve, a steering upper shaft and a steering lower shaft, wherein the fixed sleeve is sleeved on the steering upper shaft, the two ends of the steering upper shaft are respectively provided with a transmission groove and a connecting groove, the opening part of the connecting groove is articulated with a limit strip, the outside of the limit strip is provided with a fixed ring, a sliding groove is arranged between the fixed sleeve and the connecting groove, the fixed ring is connected in the sliding groove in a sliding way, the inner side surface of the limit strip is provided with a limit angle, the two ends of the steering lower shaft are respectively provided with a transmission part and a connecting part, the connecting part is connected in the connecting groove in a sliding way, the sliding part is connected with the connecting groove through a spline, the connecting part is evenly provided with limit grooves along the length direction, the limit grooves are matched with the limit angle, and the position of the limit strip in the limit grooves is adjusted simultaneously by utilizing the matching of the limit strip and the limit grooves, the length of the steering shaft can be adjusted.

Description

Novel steering shaft

Technical Field

The utility model relates to a technical field of automobile parts, more specifically the utility model relates to a novel steering spindle that says so.

Background

The upper end of the steering shaft is fixedly connected with the steering wheel, the lower end of the steering shaft is connected with the steering gear, and the steering torque of the steering wheel is transmitted to the steering gear by using the steering shaft; the steering spindle length that uses is fixed on the existing market, can't adjust, when the user to different sizes uses, the highly fixed of steering wheel, for the height of better adaptation steering wheel, only the accessible changes the seat position and changes the seat height and adjusts, can't adjust the mounting height of steering wheel, the operation of being not convenient for, influence the user simultaneously to the control of steering wheel, at the driving in-process, the control of steering wheel is difficult in time to cause traffic accident.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel steering spindle with adjustable length for overcome the above-mentioned defect among the prior art.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a novel steering shaft comprises a fixed sleeve, a steering upper shaft and a steering lower shaft, wherein the fixed sleeve is sleeved on the steering upper shaft, a transmission groove and a connecting groove are respectively arranged at two ends of the steering upper shaft, an opening of the connecting groove is hinged with a plurality of limiting strips, a sliding groove is arranged between the fixed sleeve and the steering upper shaft, a fixed ring is connected in the sliding groove in a sliding manner, the fixed ring is sleeved outside the limiting strips, a first limiting ring is arranged on the outer wall of the fixed ring and is connected in the sliding groove in a sliding manner, the diameter of the first limiting ring is larger than the caliber of the sliding groove, a tension spring is arranged in the sliding groove, one end of the tension spring is pressed on the fixed ring, the other end of the tension spring is pressed on the inner bottom surface of the fixed sleeve, a limiting angle is arranged on the opposite surface of the plurality of the limiting strips, a transmission part and a connecting part are arranged on the steering lower shaft, and the connecting part is connected in the connecting groove in a sliding manner, the connecting portion and the connecting groove are connected through splines, a second limiting ring is arranged on the connecting portion and is connected in the connecting groove in a sliding mode, the diameter of the second limiting ring is larger than the caliber of the connecting groove, and a limiting groove matched with the limiting angle is formed in the connecting portion.

Preferably, the limiting groove comprises a first inclined surface and a second inclined surface, and an included angle between the first inclined surface and the second inclined surface is 100-150 degrees.

Preferably, the connecting slot bottom is provided with the bolster, the bolster includes buffer block and buffer spring, buffer spring's one end butt in the interior bottom surface of connecting slot, buffer spring's the other end butt on the bolster, be provided with the buffer layer that contacts with connecting portion on the bolster.

Preferably, the outer wall of the fixing ring is provided with a plurality of annular holding grooves, and anti-skid protrusions are arranged in the annular holding grooves.

Preferably, an internal spline is arranged in the steering groove, and an involute spline is arranged on the connecting portion.

Preferably, the modulus of the involute spline is 1.

Preferably, the thickness of the internal spline teeth is 4 mm.

The utility model has the advantages that: the steering upper shaft and the steering lower shaft are connected through a spline, the steering upper shaft and the steering lower shaft are connected in a sliding mode, the steering shaft can be adjusted to a specified length through the matching among the limiting angle, the limiting groove and the fixing sleeve in the adjustment of the steering shaft, and meanwhile, the limiting angle, the limiting groove and the fixing sleeve are used, so that relative sliding cannot occur between the steering upper shaft and the steering lower shaft in the transmission process of steering torque.

Drawings

Fig. 1 is a longitudinal sectional view of the overall structure of the present invention;

fig. 2 is a schematic view of the overall structure of the present invention;

fig. 3 is a transverse cross-sectional view of the present invention;

fig. 4 is a partial sectional view of the steering upper shaft of the present invention.

Reference numerals: 1. a steering upper shaft; 11. a transmission groove; 12. connecting grooves; 131. a limiting strip; 132. limiting the angle; 2. steering the lower shaft; 21. a transmission section; 22. a connecting portion; 221. a second stop collar; 23. a limiting groove; 3. fixing a sleeve; 31. a fixing ring; 311. a first limit ring; 32. a chute.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The embodiments of the present invention will be described in detail with reference to the accompanying drawings:

the length of the steering shaft is fixed, so that the mounting position of the steering wheel is fixed, and the height of the steering wheel is fixed for drivers with different heights, so that the operation is inconvenient; the utility model provides a novel steering shaft, as shown in fig. 1-4, comprising a fixed sleeve 3, a steering upper shaft 1 and a steering lower shaft 2, wherein the fixed sleeve 3 is sleeved on the steering upper shaft 1, both ends of the steering upper shaft 1 are respectively provided with a transmission groove 11 and a connecting groove 12, and an internal spline is arranged in the transmission groove 11; the steering lower shaft 2 is provided with a transmission part 21 and a connecting part 22, and the transmission part 21 is provided with an involute spline; the connecting part 22 is slidably inserted into the connecting groove 12, the position of the connecting part 22 in the connecting groove 12 is adjustable, the connecting groove 12 is connected with the connecting part 22 through a spline, the steering upper shaft 1 is connected with the steering lower shaft 2 through the spline, and the transmission of torque between the steering upper shaft 1 and the steering lower shaft 2 can be realized; a second limit ring 221 is arranged on the connecting part 22, the second limit ring 221 is connected in the connecting groove 12 in a sliding manner, and the diameter of the second limit ring 221 is larger than the caliber of the connecting groove 12; the connection between the connecting part 22 and the connecting groove 12 is realized by the matching of the connecting groove 12 and the second limit ring 221, so that the steering upper circumference 1 and the steering lower shaft 2 cannot be separated in the stretching process; meanwhile, in the use process, in order to be suitable for users with different heights, the length of the steering shaft can be changed by changing the installation position of the connecting part 22 in the connecting groove 12; meanwhile, a buffer part is arranged at the bottom of the connecting groove 12 and comprises a buffer block and a buffer spring, one end of the buffer spring is abutted against the inner bottom surface of the connecting groove 12, the other end of the buffer spring is abutted against the buffer part, and the buffer part is provided with a buffer layer which is in contact with the connecting part 22; by utilizing the buffer block, the connecting part 22 cannot directly collide with the bottom of the connecting groove 12 to generate abrasion in the adjusting process of the steering upper shaft 1 and the steering lower shaft 2; meanwhile, by using the buffer part, when the vehicle collides, the steering lower shaft 2 is inserted into the steering upper shaft 1, and the steering shaft is extruded to absorb impact energy, thereby achieving the energy absorption effect.

The tooth thickness of the internal spline in the transmission groove 11 is 4mm, and the thicker internal spline is adopted, so that the torque output is ensured, and the service life of the steering upper shaft 1 can be prolonged; the modulus of the involute splines on the transmission part 21 is 1, so that the installation clearance between the involute splines is small, and the clamping and pausing conditions can not occur while torque is effectively transmitted; the side wall of the connecting groove 12 is provided with a ventilation hole which is arranged at the side of the connecting groove 12 close to the transmission groove 11, and the pressure in the connecting groove 12 is the same as the external pressure by utilizing the ventilation hole, so that the connecting part 22 can be smoothly inserted into and pulled out of the connecting groove 12.

As shown in fig. 4, two limiting strips 131 are correspondingly hinged to the opening of the connecting groove 12 of the upper turning shaft 1, a limiting angle 132 is arranged on the inner side surface of each limiting strip 131, and the section of each limiting angle 132 along the central line direction of the upper turning shaft 1 is triangular; the two limiting strips 131 are oppositely arranged, and the limiting angles 132 on the limiting strips 131 are also oppositely arranged.

Evenly be provided with spacing groove 23 along length direction on the connecting portion 22 that turns to lower shaft 2, the interval between two adjacent spacing grooves 23 is the same, be provided with two spacing grooves 23 that correspond the setting on the same horizontal tangent plane, spacing groove 23 is V nature structure, be provided with first inclined plane and second inclined plane in spacing groove 23, the nodical orientation of connecting portion 22 central line place direction of nodical on first inclined plane and second inclined plane, the contained angle between first inclined plane and the second inclined plane is 120, adopt the spacing groove 23 of 120 contained angles, when realizing that connecting portion 22 and spread groove 12 are fixed, when tensile turns to upper shaft 1, spacing angle 132 can be quick advance, go out spacing groove 23.

A buffer member is arranged between the limiting groove 23 and the limiting angle 132, the buffer member is of a V-shaped structure, the outer side of the V-shaped structure of the buffer member is matched with the limiting groove 23, and the inner wall of the V-shaped structure of the buffer member is matched with the limiting angle 132; a buffer is arranged between the limiting groove 23 and the limiting angle 132; because one end of the steering shaft is connected with the steering gear, the other end of the steering shaft is connected with the steering wheel, the steering gear is arranged on the frame, the steering wheel is relatively unstable in fixation, and when the vehicle is used in a place with an uneven road surface, the steering wheel has the possibility of jumping; the buffer member can reduce the bounce of the steering wheel and improve the comfort of a user, and meanwhile, the buffer member can reduce the friction between the limiting angle 132 and the limiting groove 23.

The limiting strip 131 on the connecting groove 12 is matched with the limiting groove 23 on the connecting part 22, and in the using process, the connection between the steering upper shaft 1 and the steering lower shaft 2 in the axial direction is realized by the matching of the limiting strip 131 and the limiting groove 23.

A fixed sleeve 3 is sleeved outside the connecting groove 12, a sliding groove 32 is arranged between the fixed sleeve 3 and the connecting groove 12, a fixed ring 31 is arranged outside the limiting strip 131, and the fixed ring 31 is connected in the sliding groove 32 in a sliding manner; a first limiting ring 311 is arranged outside the fixing ring 31, the first limiting ring 311 is connected in the sliding groove 32 in a sliding manner, the diameter of the first limiting ring 311 is larger than the caliber of the sliding groove, the fixing sleeve 3 is connected with the fixing ring 31 by matching the first limiting ring 311 with the sliding groove 32, and the fixing ring 31 is prevented from being separated from the fixing sleeve 3 in the using process; be provided with the extension spring in fixed cover 3, the one end of extension spring supports presses on solid fixed ring 31, and the other end top of extension spring is pressed at the interior bottom surface of fixed cover 3, utilizes the extension spring to realize being connected between solid fixed ring 31 and the fixed cover 3, is provided with a plurality of annular in the outside of solid fixed ring 31 and holds the groove, and the annular is held the inslot and is provided with anti-skidding arch, and cooperatees with the finger size, is convenient for in the handheld of removal in-process.

The working principle is that the transmission groove 11 of the upper steering shaft 1 is connected with a steering wheel through a joint fork, the transmission part 21 of the lower steering shaft 2 is connected with a steering gear through a sleeve, meanwhile, the lower steering shaft 2 is inserted into the upper steering shaft 1, the upper steering shaft 1 is connected with the lower steering shaft 2 through a spline, and the steering torque of the steering wheel is transmitted to the steering gear through the steering shaft; in the process of increasing the length of the steering shaft, fingers are placed in the grooves of the fixing ring 31, the fixing ring 31 is moved into the fixing sleeve 3 along the sliding groove 32, meanwhile, the steering upper shaft 1 is subjected to a force towards the transmission groove 11 side, the limiting strips 131 are subjected to a force along the transmission groove 11 side, in the process of moving the limiting strips 131, the limiting angles 132 slide in the limiting grooves 23, meanwhile, the limiting strips 131 rotate, the limiting angles 132 gradually separate from the limiting grooves 23, the minimum movement distance of the steering upper shaft 1 is the distance between two adjacent limiting areas, when the steering shaft is adjusted to a specified length, the limiting angles 132 are arranged in the other limiting groove 23, the fixing ring 31 moves downwards under the action of gravity and slides out of the fixing ring 31, meanwhile, the movable distance of the fixing ring 31 in the fixing sleeve 3 is limited by using a tension spring, the telescopic rod is extended, the fixing ring 31 is arranged on the limiting strips 131, the problem that the length of the steering shaft is changed and the normal use is influenced due to the fact that the limiting strip 131 rotates in the use process of the steering shaft is avoided; in the process of shortening the length of the steering shaft, the working principle is similar to that described above, the steering upper shaft 1 is subjected to a force towards the connecting groove 12 side, the positions of the limiting strip 131 and the limiting groove 23 are changed, and the length of the steering shaft is shortened; when violent collision occurs, the controller fails, the telescopic rod is contracted, the fixing ring 31 moves towards the fixing sleeve 3, the steering lower shaft 2 is inserted into the steering upper shaft 1 when collision occurs, the steering shaft has an energy absorption effect, and the impact force is reduced.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a novel steering shaft, its characterized in that, including fixed cover (3), turn to upper shaft (1) and turn to lower shaft (2), fixed cover (3) cover is established on turning to upper shaft (1), turn to upper shaft (1) both ends and be provided with transmission groove (11) and spread groove (12) respectively, the opening part of spread groove (12) articulates there are a plurality of spacing (131), be provided with spout (32) between fixed cover (3) and the upper shaft (1) that turns to, sliding connection has solid fixed ring (31) in spout (32), gu fixed ring (31) cover is located outside spacing (131), be provided with first spacing ring (311) on the outer wall of solid fixed ring (31), first spacing ring (311) sliding connection is in spout (32), first spacing ring (311) diameter is greater than spout (32) bore, be provided with the extension spring in spout (32), one end of the tension spring is supported and pressed on the fixing ring (31), the other end of the tension spring is pressed on the inner bottom surface of the fixing sleeve (3), the limiting strip (131) is provided with a limiting angle (132) on the opposite surface, the steering lower shaft (2) is provided with a transmission part (21) and a connecting part (22), the connecting part (22) is connected in the connecting groove (12) in a sliding mode, the connecting part (22) is connected with the connecting groove (12) through a spline, the connecting part (22) is provided with a second limiting ring (221), the second limiting ring (221) is connected in the connecting groove (12) in a sliding mode, the diameter of the second limiting ring (221) is larger than the caliber of the connecting groove (12), and the connecting part (22) is provided with a limiting groove (23) matched with the limiting angle.

2. The novel steering shaft according to claim 1, characterized in that the limiting groove (23) comprises a first inclined surface and a second inclined surface, and the included angle between the first inclined surface and the second inclined surface is 100-150 degrees.

3. The novel steering shaft according to claim 1, wherein a buffer member is arranged at the bottom of the connecting groove (12), the buffer member comprises a buffer block and a buffer spring, one end of the buffer spring abuts against the inner bottom surface of the connecting groove (12), the other end of the buffer spring abuts against the buffer member, and the buffer member is provided with a buffer layer which is in contact with the connecting portion (22).

4. The novel steering shaft according to claim 1, characterized in that the outer wall of the fixing ring (31) is provided with a plurality of annular holding grooves, and the annular holding grooves are internally provided with anti-skid protrusions.

5. The novel steering shaft according to claim 1, characterized in that an internal spline is arranged in the transmission groove (11), and an involute spline is arranged on the connecting portion (22).

6. The novel steering shaft according to claim 5, wherein the involute spline has a modulus of 1.

7. The novel steering shaft according to claim 5, wherein the thickness of the internal spline teeth is 4 mm.