JPH08301128A - Connecting device for steering device - Google Patents

Abstract

PURPOSE: To stabilize a releasing load for a steering column by providing a capsule, which fixes a bracket supporting a steering device and a vehicle body side member with a preset releasing load, and arranging a cylindrical member, which is fitted in a through hole perforated in the capsule, relatively movably in the axial direction. CONSTITUTION: A bracket 3 connecting a capsule 4 to a vehicle body side member 7 is integrally connected to a steering column, in which a steering wheel is arranged in the upper end. When a connecting part 4c is bent and one side part 4A and the other side part 4B are opposed to each other so as to be connected together, the capsule 4 is mounted to the bracket 3. Then, a cylindrical collar 11 is fitted in a through hole 4a in one side part 4A, and in installation to the bracket 3, the matching faces 4c, 4c' in both parts 4A, 4B are faced with each other without any mutual contact, and then, the end part, outer circumference of the collar 11 is fitted in a through hole 4b in the other end part 4B. In this way, pressing force against the capsule 4 is kept constant, and a releasing load for the steering column 2 can be unified.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coupling device for a steering device, and more particularly, to disengage the steering device from a vehicle body side member when an impact load is applied to the steering device from the steering wheel side. Connection device.

[0002]

2. Description of the Related Art Heretofore, there has been known a coupling device which disengages a steering device from a member on the vehicle body side when the axial load is applied to the steering device so as to absorb the impact. . And, conventionally, such a coupling device, a bracket for fixing the bracket supporting the steering device and the vehicle body side member with a predetermined separation load,
A cylindrical member fitted in a through hole formed at a predetermined position of the capsule, and inserted into the cylindrical member to clamp and fix the capsule to one of the bracket and the vehicle body side member, and the other to the above. And a connecting member for holding the capsule (for example, Japanese Utility Model Laid-Open No. 56-18267).

[0003]

By the way, in the above-mentioned conventional connecting device, the cylindrical member of the capsule is fixed to the through hole. Therefore, the fixing position of the cylindrical member with respect to the through hole may vary in the axial direction due to manufacturing errors or the like. In this way, if the fixed position of the cylindrical member with respect to the through hole varies, even if the capsule is connected to the vehicle body side member by tightening the bolt with the same torque, the capsule pressed by the vehicle body side member and the washer is pressed. Since the pressure varies, there is a drawback that the detachment load when the bracket (steering device) detaches from the capsule is not stable.

[0004]

[Means for Solving the Problems] In view of such circumstances,
The present invention relates to a capsule that fixes a bracket supporting a steering device and a vehicle body side member with a predetermined disengagement load, a cylindrical member fitted in a through hole formed at a predetermined position of the capsule, and a cylindrical member that is inserted into the cylindrical member. Then, the capsule is clamped and fixed to any one of the bracket and the vehicle body side member,
In a connecting device for a steering device having a connecting member for holding the other in the capsule, the cylindrical member is fitted in the through hole so as to be relatively movable in the axial direction. A second aspect of the invention is configured such that, in the first aspect of the invention, the cylindrical member has a spring action in a radial expansion direction when fitted in the through hole.

[0005]

According to the first aspect of the present invention, when the capsule member is manufactured, even if the fitting position of the cylindrical member with respect to the through hole is displaced in the axial direction, the cylindrical member is inserted into the through hole when connecting the capsules. Can move relative to each other. As a result, the capsule is pinched at the proper position, and the pressing force on the capsule can be made constant. Therefore, the detachment load when the bracket (steering device) detaches from the capsule can be made constant. Therefore, it is possible to stabilize the disengagement load when the steering device disengages. Further, according to the second aspect of the invention, since the cylindrical member has a spring action in the expanding direction, even if the through hole is expanded by resin creep after the capsule is manufactured, the cylindrical member is prevented from falling out of the through hole. can do.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. In FIG. 1, reference numeral 1 is a steering wheel of an automobile, and the steering wheel 1 is provided at an upper end of a steering column 2. As shown in FIG. 2, the steering column 2 is integrally connected with blade-shaped brackets 3 protruding toward the left and right sides. Bracket 3
Notch portions 3a that are open on the upper side are formed at two locations on the left and right sides of. A capsule 4 made of synthetic resin is engaged with each of the cutouts 3a.
Is connected to the vehicle body side member 7 by a bolt 6 which is a connecting member having a washer 5 as a pressing member engaged with the head. Both sides of the bracket 3 adjacent to the notch 3a are clamped by the capsule 4 connected to the vehicle body side member 7, whereby the steering column 2 can be detached by a predetermined detachment load.
It is held by the (body-side member 7) (see FIG. 10). Therefore, when the steering wheel 1 receives an impact load that exceeds the above-mentioned detachment load, the bracket 3 and the steering column 2 are detached from the capsule 4, and at that time, the steering column 2 is removed.
A conventionally known shock absorbing mechanism 8 provided on the lower side of the is buckled. As a result, the impact applied to the steering column 2 from the steering wheel 1 side can be absorbed. Thus, as shown in FIGS. 3 to 6, the capsule 4 of this embodiment includes one side portion 4A and the other side portion 4B having substantially the same trapezoidal contour, and the one side portion 48A and the other side portion 4A. 4B is connected by a pair of connecting portions 4C. In the capsule 4, the connecting portion 4C is bent so that the one side portion 4A and the other side portion 4B in the divided state face each other and are integrally connected to each other, and in that state, engage with the cutout portion 3a. It has become. Through holes 4a and 4b, through which the shafts of the bolts 6 are inserted, are formed in the centers of the one side portion 4A and the other side portion 4B, respectively, and the through holes 4a of the one side portion 4A are made of iron. A cylindrical collar 11 is fitted. Further, on the inner surface sides of the one side portion 4A and the other side portion 4B shown in FIG. 3, flat meeting surfaces 4c and 4c ′ are provided so as to surround the through holes 4a and 4b, and the through holes 4a and 4c are projected. The axial dimension of 4b is made longer, thereby improving the holding force of the collar 11 by the through hole 4a. On the outer side (both sides) of the meeting surfaces 4c and 4c ', flat contact surfaces 4d and 4d' that contact both surfaces of the bracket 3 are provided.
Are formed respectively. Capsule 4, which will be described in detail later
Is made by injection molding synthetic resin,
At that time, the collar 11 is preliminarily positioned at a predetermined position of the mold for injection molding. Therefore, the manufactured capsule 4 is in a state in which the collar 11 is fitted into the through hole 4a of the one side portion 4A, and as shown in FIGS. 3 to 5, the one side portion 4A and the connecting portion 4C. And the other side portion 4B is maintained substantially on the same plane. Then, when the capsule 4 is connected to the vehicle body side member 7 by using the bolt 6 and the bracket 3 is held, both connecting portions 4C are bent and the inner surfaces of the one side portion 4A and the other side portion 4B shown in FIG. The sides are opposed to each other, the contact surfaces 4c and 4c 'are opposed to each other so as not to contact each other, and the outer periphery of the end of the collar 11 is fitted into the through hole 4b of the other end 4B. Further, at this time, the contact surfaces 4d and 4d 'are respectively brought into contact with both surfaces of the bracket 3, and the outer surface of the one side portion 4A shown in FIG. 4 is brought into contact with the vehicle body side member 7, and the other side portion 4B is contacted. The outer surface is brought into contact with the washer 5. In this state, the bolt 6 is inserted through the collar 11 of the capsule 4 to connect the capsule 4 to the vehicle-body-side member 7, and both contact surfaces 4d of the capsule 4 are
The bracket 3 is clamped and held by 4d '. As shown in FIG. 3, arc-shaped recesses 4e and 4e ′ are formed in the joining surfaces 4c and 4c ′ of the one side portion 4A and the other side portion 4B, which are between the connecting portions 4C. The steering column 2 is provided on both sides of each of the recesses 4e, 4e '.
A pair of left and right ribs 4r and 4r 'extending in the axial direction of are respectively formed. Since the pair of ribs 4r, 4r 'provided on both sides of each of the recesses 4e, 4e' are located in the cutout portion 3a after the connection is completed, the steering column 2
On the other hand, even if a load is applied from a direction intersecting the axial direction, the steering column 2 is prevented from leaning in the left-right direction. Recessed portion 4e in the one side portion 4A
A first engaging claw 4f is provided at an intermediate position between both connecting portions 4C continuous with each other, and the other side portion 4B facing the first engaging claw 4f has a first engaging claw 4f. First engaging portion 4 to be engaged
forming g. Further, the through hole 4a is formed in the one side portion 4A.
The second engaging claw 4 is provided at a position on the opposite side of the first engaging claw 4f across the
forming h. On the other hand, the other side portion 4B facing the second engaging claw 4h when both the connecting portions 4C is bent has the above-mentioned second
A second engagement portion 4i that engages with the engagement claw 4h is formed.
Next, as shown in FIG. 3, the contact surface 4d of the one side portion 4A has elongated hole-shaped recesses 4j and 4j on both sides of the through hole 4a.
And the contact surfaces 4d 'of the other side portion 4B facing these are also formed with elongated hole-shaped recesses 4j', 4j '. Further, at the four corners of the contact surface 4d 'of the other side portion 4B, concave portions 4k and 4k' each having a bottomed hole are formed. Furthermore, as shown in FIG.
On the outer surface of the one side portion 4B, which is the position of the back surface of j ', arc-shaped protrusions 4'that follow the contour of the through hole 4b are provided on both sides of the through hole 4b. The contoured edges of these protrusions 4'are recessed from the adjacent outer surface. The long hole-shaped recesses 4j, 4j 'provided on the contact surfaces 4d, 4d' should be provided as long as possible along the axial direction of the steering column 2 so as to be substantially along the edge 3b of the bracket 3. It is arranged so as to be slightly oblique to the contact surfaces 4d and 4d 'so that a stable and good load distribution can be provided even when the contact surfaces are separated.
Next, as shown in FIG. 3, a pair of left and right engaging projections 4m are provided to project from adjacent portions of the second engaging claw 4h in the one side portion 4A, and adjacent portions of the concave portion 4e in the one side portion 4A. Also, a pair of left and right engaging projections 4n are provided in a protruding manner. These two
The pair of engaging protrusions 4m and 4n are attached to the bracket 3 shown in FIG.
The mounting position of the capsule 4 in the left-right direction of the bracket 3 is regulated by engaging with the upper and lower sides of the vertical edge 3b of the notch 3a. As shown in FIG. 2, the notch 3 of the bracket 3
Since a has a trapezoidal shape in which the interval gradually widens from the lower end to the upper end, the engaging protrusions 4m at the upper and lower positions are
The spacing of 4n is adjusted in accordance with the spacing of the left and right edges 3b, and the engaging protrusions 4m, 4m
n is formed obliquely in accordance with the direction of the edge 3b. Since the bracket 3 is sandwiched between the contact surfaces 4d and 4d ', the contact surfaces 4c and 4c' do not necessarily have to contact each other, but rather a gap is provided between the contact surfaces 4c and 4c 'after mounting. Then, the pressing load is applied to the contact surface 4d,
It is preferably distributed to 4d 'to contribute to the improvement of the surface pressure. Similarly, the engaging protrusions 4m and 4n are provided on the contact surface 4d 'of the other side portion 4B.
It is recommended to set the height so that it does not abut. Further, as shown in FIG. 3, a cylindrical reference pin 4p is provided on the left side contact surface 4d of the one side portion 4A on the left side of the second engaging claw 4h. Reference pin 4p sandwiching the through hole 4a
A cylindrical adjustment pin 4q is provided on the opposite side to the above. The heights of the reference pin 4p and the adjustment pin 4q are the same, but they are slightly higher than the meeting surface 4c as shown in FIGS. 5 and 6. On the other hand, as shown in FIG. 2, in the bracket 3 of the present embodiment, engaging holes 3c having the same inner diameter are formed on both sides of the upper portion of the cutout portion 3a and on the right side of the lower portion, and at the same time, An elongated hole 3d is formed on the left side of the portion in a direction substantially orthogonal to the axis of the steering column 2 (a direction substantially orthogonal to the cutout direction of the cutout portion 3a, that is, a substantially detached direction of the bracket 3). . The minor diameter (inner diameter) of the long hole 3d is set to be the same as the outer diameter of the reference pin 4p of the capsule 4, but the diameters of the three engaging holes 3c are set to allow the adjustment pin 4q to be loosely fitted. It is set. The reference pin 4p described above is fitted into the elongated hole 3d, and the adjustment pin 4
q is fitted in the engaging hole 3c on the right side of the upper portion in FIG. The reference pin 4p and the adjustment pin 4q
The height may be set to a height at which a predetermined detachment load can be exerted by fitting into the elongated hole 3d and the engaging hole 3c provided in the bracket 3. By increasing the height of these pins as necessary and extending to the recesses 4k and 4k ′ of the other side portion 4B, the pins can be sheared on the other side portion 4B side as well. The detachment load can be increased. In that case, the sizes of the recesses 4k and 4k 'of the other side portion 4B may be set smaller than those of the engagement hole 3c and the elongated hole 3d so that the shear load is more stable. Further, in this embodiment, the adjustment pin 4q
Although it is provided only in one place, the adjustment pins 4q may be provided in two or three places in accordance with the positions of the three engaging holes 3c on the bracket 3 side. It is possible to increase the size of the detachable load that can be changed. When the bracket 3 is held on the vehicle body side member 7 by using the capsule 4, the reference pin 4p is attached to the elongated hole 3 of the bracket 3.
While the fitting pin 4q is fitted to one side of the d, the adjustment pin 4q is loosely fitted to the engaging hole 3c on the upper right side so as to regulate the mounting position of the capsule 4 in the vertical direction of each notch 3a. When holding the bracket 3 on the vehicle body side member 7 by using the capsule 4 as described above, first, the reference pin 4p and the adjustment pin 4q provided on the one side portion 4A are attached to the elongated hole 3d and the engagement hole on the bracket 3 side. 3c respectively, and a pair of upper and lower engaging projections 4m, 4 provided on one side 4A.
n is engaged with the lower side and the upper side of the edge 3b of the notch 3a, respectively. As a result, one side 4A of the capsule 4
Is engaged at a predetermined position of the cutout 3a, and the contact surface 4d is superposed on the back surface of the bracket 3 adjacent to the cutout 3a. In this state, the connecting portion 4C is bent to bring the other side portion 4B toward the front side while facing the one side portion 4A, and the first side portion is provided via the space of the cutout portion 3a.
The engagement claw 4f and the first engagement part 4g are engaged with each other, and the second engagement claw 4h and the second engagement part 4i are engaged with each other. At this time, the outer peripheral portion of the collar 11 on the other end 11B side is loosely fitted into the through hole 4b of the other side portion 4B, and the contact surface 4d 'overlaps with the front surface of the bracket 3 adjacent to the cutout portion 3a. As a result, the one side portion 4A and the other side portion 4B of the capsule 4 which have been in the split state until then are integrally connected, and the capsule 4 is engaged with the predetermined position of the cutout portion 3a. In this state, washers 5 are attached to the head.
The bolt 6 engaged with is inserted into the collar 11 of the capsule 4 to connect the capsule 4 to the vehicle body side member 7. Further, in this embodiment, the cylindrical collar 11 fitted in the capsule 4 is made of an iron winding bush. Therefore, the collar 11 of this embodiment is discontinuous in the circumferential direction, and the outer peripheral edges of the abutting surfaces 11a facing each other are chamfered obliquely (FIG. 8). As described above, the collar 11 of the present embodiment, which is formed of a wound bush, is arranged in advance at a position to be the through hole 4a of the one side portion 4A before the capsule 4 is manufactured by injection molding the synthetic resin into the mold. , In that state, they are integrally molded. Further, in this integral molding, the abutting surfaces 11a of the collars 11 made of wound bushes are brought close to each other to maintain the diameter of the collars 11 reduced. Therefore, when the manufacturing of the capsule 4 is completed by injection molding a synthetic resin, the collar 11 is integrally fitted in the through hole 4a of the one side portion 4A of the capsule 4, and the collar 11 expands in diameter. The internal stress remains to be fitted in the through hole 4a. At this time, the abutting surfaces 11a are close to each other or close to each other. Therefore, the chamfered portions of the abutting surfaces 11a form a linear space having a substantially triangular cross section, and the space is filled with synthetic resin. And solidify (Figs. 3 and 4). The synthetic resin with which the chamfer is filled prevents the collar 11 from rotating with respect to the through hole 4 a of the capsule 4.
As described above, in this embodiment, the collar 11 is fitted in the through hole 4a of the one side portion 4A. However, when a force is applied to the collar 11 in the axial direction, the collar 11 is attached to the one side portion 4A. It can move relative to the through hole 4a in the axial direction. The axial dimension of the collar 11 is as shown in FIGS.
As shown in 0, the capsule 4 is engaged with the notch portion 3a of the bracket 3 and provided on the other side portion 4B in a state in which the opposing contact surfaces 4d and 4d ′ are brought into contact with the bracket 3. It is set to be slightly shorter than the lateral dimension from the tip of the protrusion 4 〓 to the outer surface of one side. In this embodiment, as described above, when the capsule 4 is integrally molded with the collar 11 fitted, as shown in FIG.
One end 11A in the axial direction of the collar 11 has one side 4A.
It is in a state of protruding slightly outward from the outer surface of
On the other hand, the other end 11B of the collar 11 has a second engaging claw 4h.
It is in a state of protruding as much as the tip of (see FIG. 6 and FIG. 7). As described above, in the present embodiment, the collar 11 while maintaining the residual stress is integrally molded in the through hole 4a of the one side portion 4A, and is made unrotatable with respect to the through hole 4a. The collar 11 is slidable in the axial direction with respect to the through hole 4a when a predetermined load is applied in the axial direction. In this embodiment, the frictional force when the collar 11 is integrally molded at the position of the through hole 4a as described above is equal to or more than the minimum load capable of holding the collar 11 and smaller than the tightening load. Is being adjusted. Therefore, the manufactured capsule 4 has a color 1
In the natural state where the axial force does not act on the collar 11, the collar 11 is pressed against the through hole 4a by the internal stress of the collar 11. Therefore, the collar 11 does not separate from the through hole 4a when the capsule 4 is carried. On the other hand, after the start of the connecting work shown in FIG. 9, the collar 11 acts on the through hole 4a of the capsule 4 so as to relatively move the collar 11 in the axial direction, and the frictional force thereof has a predetermined value. When it exceeds, the collar 11 is axially moved relative to the through hole 4a of the capsule 4. As described above, the collar 11 does not necessarily have to be integrally molded at the time of manufacturing the capsule 4, and the capsule 4 is injection-molded without disposing the collar 11 in the mold in advance.
After that, the diameter of the collar 11 made up of a winding bush may be reduced and press-fitted into the through hole 4a of the capsule 4. Further, in this case, the collar 11 does not have to be a winding bush, and may be a bush that is continuous in the circumferential direction as in the conventional case. As the collar 11, in addition to the iron described above, it is preferable to use a hard resin having a higher strength than the capsule 4. What you need to do in these cases is:
The frictional force when the collar 11 is press-fitted into the through hole may be the above-mentioned value. Further, the perforation of each hole or the like in the capsule 4 in the present embodiment includes the one manufactured as described above. As shown in FIGS. 3 to 5, the capsule 4 of the present embodiment configured as described above is in a state in which the collar 11 formed of the winding bush is integrally fitted in the through hole 4a in the state after the manufacturing is completed. And again,
The one side portion 4A, the connecting portion 4C, and the other side portion 4B are maintained in an open state that is substantially on the same plane. When the bracket 3 is held on the vehicle body side member 7 by using the capsule 4, first, the reference pin 4p and the adjustment pin 4q provided on the one side portion 4A are attached to the elongated hole 3d and the engagement hole 3c on the bracket 3 side.
And a pair of upper and lower engaging projections 4m and 4n provided on the one side portion 4A, respectively, and the edge portion 3 of the cutout portion 3a.
Engage b. At this time, the contact surface 4d also has the notch 3a.
Is superposed on the back surface of the bracket 3 which is located adjacent to. As a result, the one side portion 4A of the capsule 4 is engaged with the predetermined position of the cutout portion 3a. Note that, apart from the example shown in FIG. 2, when a pair of engaging holes 3c and elongated holes 3d are formed at symmetrical positions, one side portion 4A from the back side in FIG. Instead of the above-described embodiment in which the above-mentioned embodiment is engaged, the engagement may be performed from the front side in FIG. In addition,
When it is desired to specify the assembly direction of the capsule 4, the right or left oblong hole 3d or the engagement hole 3c is abolished, the dimensions are changed, or the capsule 4 is provided with a desired projection, and thus the wrong assembly is performed. A preventive design is recommended. Next, when this state is reached, the connecting portion 4C is bent to form the other side portion 4B.
Facing the one side portion 4A, the first engaging claw 4f and the first engaging portion 4g are engaged with each other through the space of the cutout portion 3a, and the second engaging claw 4h and the second engaging claw 4h are provided. The engaging portions 4i are engaged with each other. At this time, the other end 1 of the collar 11
The outer peripheral portion on the 1B side is loosely fitted into the through hole 4b of the other side portion 4B, and the contact surface 4d 'of the other side portion 4B overlaps with the rear surface of the bracket 3 adjacent to the cutout portion 3a. Also,
The meeting surfaces 4c and 4c 'of the one side portion 4A and the other side portion 4B may be engaged with each other, but it is preferable to provide a gap. As a result, the one side portion 4A and the other side portion 4B of the capsule 4 which have been in the divided state until then are integrally connected, and the capsule 4 is engaged with the predetermined position of the notch portion 3a ( 2 and 9). In this state, the bolt 6 having the washer 5 engaged with the head is inserted into the collar 11 of the capsule 4 and is connected to the vehicle body side member 7. In this state, as shown in FIG. 9, the other end 11B of the collar 11 is located on the inner side (left side) of the protrusion 4 ', while the one end 11A of the collar 11 is on the outer side of the one side 4A. Protruding, and thus collar 1
One end 11A of No. 1 is in contact with the vehicle body side member 7. As described above, when the tightening of the bolt 6 shown in FIG. 9 is started, only one end 11A of the collar 11 is in contact with the vehicle body side member 7, and as the tightening of the bolt 6 progresses, the washer 5 Comes into contact with the protrusion 4 〓 of the capsule 4, and further the capsule 4 which comes into contact with the washer 5 as the bolt 6 is tightened thereafter is moved relative to the collar 11 toward the left side. Capsule 4 for side member 7
The facing surface (the outer surface on the left side) of the above contacts. In this state, the washer 5 is slightly separated from the other end 11B of the collar 11, and thereafter, by further tightening the bolt 6 with a predetermined torque, the capsule 4 is slightly compressed, so that the washer 5 is separated from the collar 11. It contacts the other end 11B. As a result, the capsule 4 is connected to the vehicle-body-side member 7 by the bolt 5 and the washer 7, and both surfaces of the bracket 3 around the cutout portion 3a contact the contact surface 4d of the capsule 4.
4d ', the bracket 3 and the steering column 2 are held by the capsule 4 so as to be detachable with a predetermined detachment load. At this point, the work of connecting the bracket 3 to the vehicle body side member 7 is completed. When the connecting work is completed in this way, since the concave portions 4j, 4j 'are formed in the contact surfaces 4d, 4d' of the capsule 4,
The contact surfaces 4d and 4d 'around them are the bracket 3
Will be strongly pressed against both surfaces with a uniform surface pressure. In addition, in this embodiment, the concave portions 4 are formed on the contact surfaces 4d and 4d '.
Since j and 4j 'are formed, the contact surfaces 4d and 4d' are less likely to be twisted due to sinking of the material when the capsule 4 is injection-molded with the synthetic resin, and therefore, the contact surfaces 4d and 4d 'are contacted at the end of manufacturing the capsule 4. The surfaces 4d and 4d 'are maintained as flat surfaces. Therefore, the contact surface 4
The d and 4d 'are strongly pressed against both surfaces of the bracket 3 with a uniform surface pressure. On the other side 4B of the capsule 4, the protrusion 4'contacts the washer 5 and
Since the flat outer surface of the adjacent position of 〓 does not contact the washer 5,
The protrusion 4 〓 comes into contact with the washer 5 with a stable load. As described above, the capsule 4 of the present embodiment is provided with the concave portions 4j and 4j ′ on the contact surfaces 4d and 4d ′ with which the bracket 3 is contacted, and the contact surfaces 4d and 4j ′ are
The surface pressure of 4d 'is made uniform, and the contact portion of the capsule 4 with the washer 5 is a protrusion 4',
Since the surface pressure of that portion is stable, it is possible to prevent the deviation load of the steering column 2 from the capsule 4 after the coupling work is finished, and thereby to make the separation load of the steering column 2 constant. be able to. Moreover, in this embodiment, the washer 5 in the capsule 4 is
Since the contacting point with and is an arc-shaped protrusion 4〓,
It is possible to uniformly improve the surface pressure of the contact surfaces 4d and 4d ′ around the recesses 4j and 4j ′, which are the back surface of the protrusion 4 ′.
Thereby, the separation load of the steering column 2 can be made constant. Further, by providing the concave portions 4j, 4j 'and the protrusions 4', even if the contact surfaces 4d, 4d 'have minute irregularities, distortions, undulations, etc., the surface pressure of the contact surfaces 4d, 4d' Can be stabilized. Also,
In this embodiment, the reference pin 4p on the capsule 4 side is fitted into the elongated hole 3d of the bracket 3 and the engaging protrusions 4m and 4n of the capsule 4 are engaged with the edge 3b of the cutout 3a. Since the engagement position of the capsule 4 with respect to the notch portion 3a can be made constant at all times, in this sense as well, it is possible to prevent the disengagement load of the steering column 2 from varying, thereby disengaging the steering column 2. The load can be constant. Further, in the present embodiment, when a shocking load is applied to the steering wheel 1 from the upper side after the assembly is completed, the bracket 3 slides downward with respect to the capsule 4, and the bracket 3 Capsule 4 by engaging hole 3c and slot 3d of 3
The adjustment pin 4q and the reference pin 4p are sheared and the bracket 3 and the steering column 2 are separated from the capsule 4. In the present embodiment, when the capsule 4 is manufactured, the outer diameter of the adjusting pin 4p is adjusted to an outer diameter that provides a predetermined separation load. This allows the separation load to be easily set to a predetermined separation load. Therefore, the separation load of the steering column 2 can be made constant. Further, as described above, in this embodiment, the collar 11 is made of a wound bush and the frictional force is set to a predetermined frictional force. Even if the diameter is slightly increased due to, the internal stress remaining in the collar 11 urges the collar 11 in the direction of expanding the diameter,
The outer peripheral portion of the collar 11 is always kept in pressure contact with the inner peripheral surface of the through hole 4a. Therefore, when carrying the capsule 4 after a lapse of time after the manufacture of the capsule 4, the collar 11 does not drop out from the through hole 4a of the capsule 4. Further, when the capsule 4 is connected to the vehicle body side member 7 as described above, the bolt 6 is tightened,
The collar 11 is moved relative to the through hole 4a of the capsule 4 in the axial direction, and is then sandwiched between the vehicle body side member 7 and the washer 5 so as to be positioned at a suitable position in the axial direction with respect to the through hole 4a. . Therefore, after the connection work is completed, the bolt 6 is attached to the capsule 4 held between the vehicle body side member 7 and the washer 5.
There is no excessive or insufficient tightening load due to tightening of the steering column, and therefore, the separation load of the steering column 2 can be made constant.

[0007]

As described above, according to the present invention, it is possible to obtain an effect that the separation load when the steering column is separated can be stabilized.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a front view of the main parts of the constituent members shown in FIG.

FIG. 3 is a plan view showing a state after manufacturing the capsule shown in FIG.

4 is a rear view of FIG.

5 is a left side view of FIG.

6 is a sectional view taken along line VI-VI in FIG.

7 is a bottom view of the main part of FIG.

8 is a sectional view of the collar shown in FIG.

9 is a cross-sectional view showing a state at the start of connecting work of the main parts shown in FIG.

10 is a cross-sectional view showing a state at the end of the connection work of the main parts shown in FIG.

[Explanation of symbols]

2 Steering column 3 Bracket 4 Capsule 5 Washer (pressing member) 6 Bolt 7 Body side member

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Tomomi Ueno 3-65 Midorigaoka, Toyota-shi, Aichi Otoyo Kogyo Co., Ltd. (72) Masakazu Ishikawa 1 Toyota-cho, Toyota-shi, Aichi Toyota Motor Co., Ltd. (72) Inventor Hiroo Shirasawa 1 Toyota-cho, Toyota-shi, Aichi Toyota Motor Co., Ltd.

Claims (2)

[Claims] 1. A capsule for fixing a bracket supporting a steering device and a vehicle body side member with a predetermined separation load, a cylindrical member fitted in a through hole formed at a predetermined position of the capsule, and the cylindrical member. In a connecting device for a steering device, which has a connecting member that is inserted to fix the capsule to one of the bracket and the vehicle body side member and to hold the other to the capsule, the cylindrical member is provided in the through hole. A coupling device for a steering device, which is fitted so as to be relatively movable in the axial direction. 2. The steering device coupling device according to claim 1, wherein the cylindrical member has a spring action in a radial direction when fitted into the through hole.