阅读说明：本技术 转向柱 (Steering column ) 是由 宫井秀和 藤村统 上坂阳太 谷冈康弘 大须贺章朗 铃木拓也 于 2019-05-21 设计创作，主要内容包括：本发明涉及一种转向柱(10),该转向柱(10)包括：筒形构件(20),该筒形构件(20)以允许转向轴(15)伸长及缩短的方式保持转向轴(15)；保持构件,该保持构件保持筒形构件；固定构件(40；40a),该固定构件固定至车身(120)；联接构件(60),该联接构件将固定构件与保持构件联接；以及能量吸收构件(50；50a；50b),该能量吸收构件部分地固定至保持构件。当保持构件沿轴向方向向前移动指定距离时,联接构件使固定构件与保持构件断开联接。固定构件具有接合部分(45；46；49),该接合部分布置成当保持构件沿轴向方向向前移动指定距离或更长时处于接合部分与能量吸收构件的被接合部分接合的位置。(The present invention relates to a kind of steering column (10), the steering column (10) includes: Cylinder shape constructional element (20), which keeps steering shaft (15) in a manner of allowing steering shaft (15) to extend and shorten；Holding member, the holding member keep Cylinder shape constructional element；Fixing component (40；40a), which is fixed to vehicle body (120)；Coupling member (60), the coupling member couple fixing component with holding member；And energy-absorbing member (50；50a；50b), which is partly fixed to holding member.When holding member in axial direction moves forward distance to a declared goal, coupling member couples fixing component with holding member disconnection.Fixing component has bonding part (45；46；49), the bonding part be arranged to when holding member in axial direction move forward distance to a declared goal or it is longer when the position that is engaged in bonding part with the bonded part of energy-absorbing member.)

1. a kind of steering column (10), the steering column (10) is arranged in vehicle body (120), and the steering column (10) is characterized in that Include:

Cylinder shape constructional element (20), the Cylinder shape constructional element (20) is in a manner of allowing steering shaft (15) to extend and shorten in the axial direction Keep the steering shaft (15)；

Holding member (30), the holding member (30) keep the Cylinder shape constructional element (20)；

Fixing component (40；40a), the fixing component (40；40a) it is fixed to the vehicle body (120)；

Coupling member (60), the coupling member (60) are configured to the fixing component (40；40a) with the holding member (30) couple, and the coupling member (60) is configured to refer to when the holding member (30) along axial direction forward movement The fixing component (40,40a) is disconnected with the holding member (30) to couple；And

Energy-absorbing member (50；50a；50b), the energy-absorbing member (50；50a；50b) partly it is fixed to the holding Component (30), wherein

The fixing component (40；40a) there is bonding part (45；46；49), the bonding part (45；46；49) it is arranged to work as During secondary collision the holding member (30) along the axial direction move forward the distance to a declared goal or it is longer when be in The bonding part (45；46；49) with the energy-absorbing member (50；50a；The position that bonded part 50b) engages.

2. steering column (10) according to claim 1, which is characterized in that

The bonding part (45；46；49) with from the fixing component (40；40a) mode outstanding is arranged,

The bonded part is arranged in the energy-absorbing member (50；50a；Opening (51) in 50b),

The bonding part (45；46；49) it is arranged in a manner of extending through the opening (51),

The opening (51) is sized such that in the opening (51) and the bonding part (45；46；49) in the axis Gap is provided between rear side on direction, and

In the bonding part (45；46；49) head (72), the head are provided on the part exposed from the opening (51) Portion has when in the bonding part (45；46；49) part bigger than the opening (51) when being observed on projected direction, and The head (72) is arranged apart with the periphery edge of the opening (51) on the projected direction.

3. steering column (10) according to claim 2, which is characterized in that

The head (72) is the head of bolt (70), and the bolt (70) is by by the fixing component (40；40a) with it is described Vehicle body (120) is fastened the fixing component (40；The vehicle body (120) 40a) are fixed to,

The bonding part (45；46；49) there is through-hole, the through-hole makes the shaft portion (71) of the bolt (70) described prominent Side extends up through the bonding part (45 out；46；49),

The energy-absorbing member (50；50a；50b) plate-like shape, and

The bonding part (45；46；49) from the fixing component (40；Protrusion length 40a) risen is greater than the energy absorption Component (50；50a；The thickness of the periphery edge of the opening (51) in 50b).

4. steering column (10) according to claim 3, which is characterized in that

The bonding part (46) has dome-like roof (48),

The dome-like roof (48) is arranged in attachment hole (47), and the attachment hole (47) is arranged at the fixing component (40a) In, so that a part on pipe axial direction of the dome-like roof (48) is prominent from the fixing component (40a), and

The shaft portion (71) of the bolt (70) is arranged to extend through the dome-like roof on the pipe axial direction (48)。

5. steering column (10) according to claim 2, which is characterized in that

The bonding part is the step (73) of step bolt (70a), and the step bolt (70a) is by by the fixation Component (40) and the vehicle body (120), which are fastened, is fixed to the vehicle body (120) for the fixing component (40),

The head (72) is the head of the step bolt (70a),

The plate-like shape of the energy-absorbing member (50), and

Thickness on the axial direction in the step bolt (70a) of the step (73) is greater than the energy-absorbing member (50) thickness of the periphery edge of the opening (51) in.

6. the steering column according to any one of claim 2 to 5 (10), which is characterized in that in the energy absorption structure It is formed on the periphery edge of the opening (51) in part (50a) towards the head (72) or the fixing component (40) male portion (57) outstanding.

7. the steering column according to any one of claim 2 to 5 (10), which is characterized in that

The energy-absorbing member (50b) includes the annular section (52) with the opening (51),

The annular section (52) has outstanding curved towards the head (72) or the fixing component (40) or bends Shape.

Technical field

The present invention relates to steering columns.

Background technique

For steering column, a kind of mechanism for absorbing the impact during secondary collision from driver is needed, is touched secondary In hitting, driver due to vehicle collision and with steering wheel collide.For example, in Japanese Patent Application No.2015-9685 In (JP 2015-9685A), a kind of transfer including absorption component is disclosed, which absorbed in the secondary collision phase Between impact energy.The transfer includes bonding part, fixed part and the absorption that upper bracket and upper bracket integrally move Component.Fixed part is bolted to vehicle body, and therefore relative position of the fixed part in vehicle body in secondary collision It is later before fixed with secondary collision.Absorption component includes: to be fixed part, this is fixed part and is fixed to fixed part Point；Bonded part, the bonded part are opposite with bonding part；Coupling part, the coupling part will be fixed part and quilt Bonding part connection；And null part.Null part makes bonded part to keep specified squeegee hopover with bonding part Mode arrange.During secondary collision, upper bracket is moved along specified moving direction.When coupling part by bonding part with The engagement of bonded part and when deforming, absorption component absorbs the energy in secondary collision.

In above-mentioned transfer, bolt and capsule can be passed through with the upper bracket of fixed part (cryptomere portion) separated position by being in Shape portion is fastened to vehicle body together.Cryptomere portion and upper bracket are further coupled to each other by resin pins.In this configuration, upper bracket It is mobile when secondary collision occurs.Therefore, resin pins rupture, and upper bracket and cryptomere portion separate.Then, mobile upper bracket Bonding part engaged with absorption component.In this way, absorption component absorbs the impact energy generated by secondary collision.

However, as in said structure, it is fixed and mobile with vehicle body disconnection by impact during secondary collision The structure that is engaged with absorption component of component (mobile member) in, the bonded part of mobile member and being engaged for absorption component Part is mobile relative to vehicle body.For this reason, for example it is difficult to obtain mobile member and absorption component during secondary collision Between stabilization engagement state.

Summary of the invention

The present invention provides a kind of steering column, which can execute impact absorbing appropriate by simple configuration and grasp Make.

Steering column according to an aspect of the present invention is the steering column being arranged in vehicle body.The steering column includes tubular structure Part, holding member, fixing component, coupling member and energy-absorbing member.Cylinder shape constructional element is to allow steering shaft in the axial direction The mode for extending and shortening forward keeps steering shaft.Holding member keeps Cylinder shape constructional element.Fixing component is fixed to vehicle body.Couple structure Part is configured to couple fixing component with holding member.Coupling member is configured to refer to when holding member in axial direction moves forward Fixing component is disconnected with holding member to couple.Energy-absorbing member is partly fixed to holding member.Fixed structure Part have bonding part, the bonding part be arranged to the holding member during secondary collision in axial direction moves forward specify away from From or longer situation under the position that is engaged with the bonded part of energy-absorbing member in bonding part.

In steering column, bonding part can by from fixing component it is outstanding in a manner of be arranged.Bonded part, which can be, to be set Set the opening in energy-absorbing member.Bonding part can be arranged in a manner of extending through opening.Opening can be with scale cun At to be provided with gap between opening and the rear side in the axial direction of bonding part.In the sudden and violent from opening of bonding part Head can be set on the part of dew, head has the portion bigger than being open when observing on the projected direction in bonding part Point, and head can be arranged apart with the periphery edge of opening on projected direction.

In steering column, head can be the head of bolt, and the bolt will be by that will consolidate fixing component and vehicle body fastening Determine component and is fixed to vehicle body.Bonding part can have through-hole, which extend through the shaft portion of bolt on projected direction Cross bonding part.Energy-absorbing member can be with plate-like shape.Protrusion length of the bonding part from fixing component can be greater than The thickness of the periphery edge of opening in energy-absorbing member.

In steering column, bonding part may include dome-like roof.Dome-like roof can be set in attachment hole, the attachment Hole is arranged in fixing component, so that a part on pipe axial direction of dome-like roof is prominent from fixing component.Bolt Shaft portion can be arranged to extend through dome-like roof on pipe axial direction.

In steering column, bonding part can be the step of step bolt, and the step bolt is by by fixing component Fixing component is fixed to vehicle body with vehicle body fastening.Head can be the head of step bolt.Energy-absorbing member can be with Plate-like shape.Step can be greater than the opening in energy-absorbing member in the thickness on the axial direction of step bolt The thickness of periphery edge.

In steering column, it could be formed on the periphery edge of the opening in energy-absorbing member headward or fixed Component male portion outstanding.

In steering column, energy-absorbing member may include the annular section with opening.Annular section can have court To the shape that head or fixing component are outstanding curved or bend.

Above-mentioned steering column can execute impact absorbing appropriate by simple configuration and operate.

Detailed description of the invention

Below with reference to accompanying drawings to the feature, advantage of exemplary embodiments of the present invention and technology and industrial significance into Row description, similar appended drawing reference represents similar element in the accompanying drawings, and in the accompanying drawings:

Fig. 1 is the perspective view of the appearance of steering column according to one embodiment；

Fig. 2 is the exploded perspective view according to the steering column of the embodiment；

Fig. 3 is the perspective view according to the appearance of the energy-absorbing member of the embodiment；

Fig. 4 is the perspective view according to the appearance of the fixing component of the embodiment；

Fig. 5 is the cross-sectional view of the fixing component and surrounding structure according to the embodiment；

Fig. 6 is the view of fixing component and surrounding structure during normal time；

Fig. 7 is fixing component and surrounding the structure and then view after secondary collision；

Fig. 8 is the view of fixing component and surrounding structure after energy-absorbing member starts deformation；

Fig. 9 is the view of the fixing component and surrounding structure according to the first of the embodiment the modification embodiment；

Figure 10 is the view of the fixing component and surrounding structure according to the second of the embodiment the modification embodiment；

Figure 11 is the view for showing the characteristic for the energy-absorbing member that embodiment is modified according to the third of the embodiment； And

Figure 12 is the view for showing the characteristic of the energy-absorbing member according to the 4th of the embodiment the modification embodiment.

Specific embodiment

Hereinafter embodiment and its modification embodiment are specifically described with reference to the accompanying drawings.Note that below will The embodiment and modification embodiment of description each illustrate comprehensive or specific example.Embodiment below and modification Numerical value, shape described in embodiment, material, constituent element, the position of constituent element and coupled situation, step, step Rapid sequence is only example, and is therefore not intended to limit the present invention.In addition, embodiment below and modification embodiment party In constituent element described in formula, the constituent element not described in the independent claims with highest concept will be used as optional Constituent element be described.

Each attached drawing in attached drawing is schematic diagram, wherein constituent element suitably exaggerated, omit or adjustment rate with In illustrating the present invention, and therefore, the shape, positional relationship and ratio of constituent element shown in the drawings can be with composition members True form, actual positional relationship and the effective rate of part are different.Additionally, there are following situations: where instruction relative direction It is such as parallel and orthogonal in embodiments described below and claim with the statement of posture.However, in these statements Each statement further include not with the relative direction or posture that are indicated by the statement strictly corresponding relative direction or posture.Example Such as, both direction statement parallel to each other does not mean only that both direction is perfectly parallel to each other, and mean both direction that This is substantially parallel, that is to say, that for example, it also includes several percentage points of difference.