JPS608043Y2 - Sliding device for vehicle sliding door - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a sliding device for a vehicle sliding door.

Conventionally, as shown in FIGS. 1 to 4, a vehicle body 1 of an automobile, etc.
When the door 3 that opens and closes the door 2 is closed, the outer surface of the door 3 is flush with the outer surface of the vehicle body 1, and when opened, the door 3 is on the outer surface of the vehicle body 1. The sliding door is equipped with the following sliding device.

That is, as shown in FIGS. 2 and 3, a horizontal guide surface 5 and vertical guide surfaces 6a, 6 are provided in a groove 4 extending from the vertical center of the entrance 2 to the outer surface of the vehicle body 1.
A channel-shaped guide rail 8 with one end 7 curved inward is attached.

On the other hand, above the entrance 2, as shown in FIG. 4, a guide rail 9 having a U-shaped cross section with one end curved inward is installed along its upper edge, with the opening in the cross section facing downward. It is installed.

Further, a horizontal guide floor 20 is formed at the lower part of the floor of the entrance/exit 2, and above it, a guide rail 10 having a U-shaped cross section with one end curved inward is provided at the opening in the cross section. It is attached with the side facing downward.

In addition, a roller support 12 rotatably pivoted about a vertical shaft 11 at the approximate center in the height direction of the front edge of the door 3 in the opening direction (FIGS. 2 and 3) has a horizontal shaft. A roller 14 rotatable around a shaft 13 and rollers 16a and 16b rotatable around a vertical shaft 15a and 15b are attached, and the roller 14 rolls on the horizontal guide surface 5 of the guide rail 8, On the other hand, the rollers 16a and 16b are engaged with the guide rails so as to be guided by the vertical guide surfaces 6a and 6b of the guide rail 8.

On the other hand, at the upper part of the rear edge of the door 3 in the opening direction, a roller 18 is rotatably supported by an arm 17 installed inside the door, as shown in FIG. It is engaged so that the

Further, an L-shaped member 1 is provided at the lower part of the rear edge of the door 3 in the opening direction.
9 is attached, and a vertical shaft 2 is attached to the tip of this L-shaped member 19.
A guide roller 22 rotatable around 1 and a support roller 24 rotatable around a horizontal shaft 23 are attached,
The guide roller 22 is guided and engaged with the guide rail 10, while the support roller 24 is configured to roll on the horizontal guide plate 20.

In the above configuration, since the guide rollers 16a and 16b are sandwiched between the vertical walls of the guide rail 8, the width of the guide rail becomes large to accommodate the guide rollers 16a and 16b, and the width of the guide rail is increased to accommodate the guide rollers 16a and 16b. The tension is large;
This was inconvenient in terms of appearance and safety.

Also, if the width of the guide rail 8 is made smaller, the guide roller 1
Since the diameters of the guide rollers 6a and 16b are restricted, during sliding, the rotational speed increases and the contact pressure between the guide roller and the guide rail increases, resulting in severe wear of the guide roller and a tendency to play.

Furthermore, the guide roller 16 at the curved portion of the guide rail 8
Since the trajectories of a and 16b do not match the trajectory of the support roller 14, sideways slipping occurs on the support roller, causing wear and tear on the roller.
This has drawbacks such as causing unsmooth operation.

In view of the above-mentioned conventional drawbacks, the present invention has been developed to reduce the width of the guide rail to eliminate problems in terms of appearance and safety, as well as to reduce wear by using large-diameter guide rollers. The goal is to obtain a sliding device.

Hereinafter, embodiments of the present invention will be explained in detail with reference to the embodiments shown in FIGS. 5 to 11.

In FIG. 5, which shows a cross-sectional view of part A in FIG. A substantially horizontal guide rail 8A is attached, and the front end of the guide rail 8A on the vehicle body opening side (boarding/exit 2 side) is curved inwardly.

Then, the roller support body 12 slides on this guide rail 8A.

As shown in FIGS. 6A and 6B, this roller support body 12 is rotatably supported by the door 3 via a bracket 3A and a vertical pin 11.

A support roller 33 is attached to this roller support body 12A via a substantially horizontal shaft 13, and a guide roller 1
6A and 16B are rotatably attached via substantially vertical shafts 15A and 15B, respectively.

The guide rail 8A is attached to the support roller 33.
A groove 32 is formed to engage with the protrusion 30 of the guide roller 16A, 16B.
3, and are arranged before and after the support roller 33, and a part of the outer peripheral surface is formed by the protrusion 30 as shown in FIG.
It protrudes further outward in the vehicle width direction.

In addition, in a state in which the support roller 33 is engaged with the vertically opposing protrusions 30 of the guide rail 8A, the guide rollers 16A and 16B are moved so that they are in contact with the substantially vertical wall surface (guide surface) 8a of the guide rail 8A. The position dimensions of the rollers and rails are set.

As described above, the roller support 12 including a plurality of roller groups
A and the guide rail 8A constitute a sliding mechanism.

In the above configuration, when the door is opened and closed, the support roller 33 rolls on the protrusion 30 of the guide rail 8A while bearing the weight of the door, thereby regulating the trajectory of the rear end of the door 3.

At this time, the rotational moment of the roller support body 12A generated around the pin 11 due to rolling resistance is caused by the engagement between the V groove 32 formed on the outer circumference of the roller and the protrusion 30 of the guide rail, and between the guide rollers 16B, 16A and the guide rail. 8A is shared by contact with the vertical wall surface 8a.

As a result, the roller support 12A is stably held on the guide rail 8A, and the roller support 12A is guided onto the guide rail 8A by the same action at the rail curved portion, and the predetermined opening/closing operation of the door 3 is performed. can get.

Note that the guide rollers 16A and 16B are the guide rail 8A.
Although it is configured to roll on the vertical wall surface 8a, it may also be configured to roll on the outer surface of the vehicle body.

Next, in the embodiment shown in FIG. 7, the guide rail 8B has a U-shaped cross section.
Both ends 31 of the upper and lower surfaces of the upper and lower surfaces are bent inward so that the vertical distance between the openings is smaller than the outer diameter of the support roller 33. With this structure, the support roller 33 is prevented from significant wear, etc. Even when an abnormality occurs, it can be prevented from falling off the guide rail 8B.

In the embodiment shown in FIG. 8, the guide rail 8C is formed into an abbreviated shape, a protrusion 30 is provided on the upper surface of the horizontal wall, and guide rollers 16A and 16B are arranged below the horizontal wall of the guide rail 8C. With this configuration, the guide rail can be made smaller and lighter.

The embodiment shown in FIG. 9 uses only one guide roller 16 to simplify the structure and reduce space.

That is, only one guide roller 16 is provided, and it is provided either before or after the support roller 33. In this embodiment, it is provided on the rear side, and the guide roller 16 is provided on the roller support body 12C.
A spring 34 is provided which always urges the guide rail in the vertical direction.

Note that the reaction force of the spring 34 is set to be greater than the rotational moment generated during sliding.

With this configuration, when the door 3 slides, the roller support 12C stably maintains the positional relationship with the guide rail 8A in the straight section by the spring 34, while the support roller 33 rolls and curves. In the part, the guide roller 16
Due to the contact with the vertical wall surface 8a of the guide rail 8A,
The roller support body 12C rotates against the spring 34,
Follow smoothly.

Next, different embodiments of the present invention shown in FIGS. 11 and 12 will be explained.

In the first embodiment shown in FIGS. 5 and 6, at the curved portion of the guide rail 8A, the trajectories of the guide rollers 16A and 16B,
The trajectory of the support roller 33 is non-parallel as shown in FIG.

For this reason, if the protrusion 30 of the guide rail 8A and the vertical wall surface 8a of the guide rail 8A are formed parallel to each other, the guide rollers 16A and 16B will move backward in the direction of movement of the door (when the door is opened).
The guide roller located at is lifted from the vertical wall surface 8a, and the support roller 33 is tilted by θ.

Therefore, the groove 32 on the outer periphery of the support roller 33 needs to have a sufficient width in consideration of the inclination θ.

FIG. 12 is an explanatory diagram of an embodiment of the guide rail 8A shown in FIG. 11, in which the above-mentioned problems have been improved.

That is, when the vertical wall surface 8a of the guide rail 8D is formed into a circular arc with a radius R at the curved portion, the locus of the center of the support roller, that is, the protrusion 30 becomes a continuous curve β' with R1, R2, and R3.

Here, the support roller 33 and guide rollers 16A, 16B
If the interval between is R2-R3, R2 is obtained as follows.

That is, take L from the starting point Q of R to the straight line side and define it as a point S.

Similarly, L is approximately taken on the curve side, and it is defined as a point P.

Draw a perpendicular line from point S, draw a normal line of curve R from point P, and let T be the intersection point, and obtain R2 centered on point T.

R1 is the distance between the center point of the arc of radius R and the intersection of the arc of radius R2 and the normal to point P.

This is expressed by the following approximate expression when the guide roller radius is O.

R □ = j anti, -L, +b R5 = R3 = R + 7 R2 - L2 + b = R + R1b = If the lines α' and β' are configured so as to be equal to or larger than the distance between α' and β' in the straight section, the support roller 33
The central axis of the curve always coincides with the normal line of the curve β', and the inclination θ as shown in FIG. 10 does not occur.

Next, FIG. 15 is an explanatory view of the embodiment of the guide rail 8E in FIG. 13. When the protrusion 30 of the guide rail 8E is an arc with radius r at the curved portion, the vertical wall surface 8a, that is, the guide roller 16A, The trajectory of 16B is as follows.

In other words, the trajectory α'' of the outer circumferential wall of the guide roller 16A on the front side (when the door is open) extends from the straight line parallel to the outside of the vehicle body to the starting point Q of r.
Extend forward by L from ', and let this point be S'.

A circular arc r□ having a radius equal to the distance between the center points of S' and r is extended until it touches the inclined straight portion of the guide rail 8E, and this locus is defined as α''.

Expressing this using the same approximate formula as above, r□=(r-b
)2+L2.

Further, the trajectory α'' of the outer circumferential wall of the rear guide roller 16B is determined to be symmetrical to α'' with respect to the center line U of the curved portion.

Therefore, in order to avoid interference between α'' and α'', the vertical wall surface 8a of the guide rail is configured in two stages, upper and lower, as shown in Fig. 13.14. (It is a cross-sectional view taken along the line C-C).

When α″, α′″, and β″ are configured as described above, the central axis of the support roller 33 always coincides with the normal line of the curve β″, and the guide rollers 16A and 16B are α″.

It never rises from α″′.

Therefore, the support roller 33 operates smoothly without causing the inclination θ as shown in FIG.

In the above embodiment, the case where the curved portion is a simple circular arc curve has been described, but the above-mentioned effects can be obtained by the same method in the case of a compound circular arc curve or other curves.

Although the above embodiments are all applied to the central part of the vehicle body in the height direction, the same effect may be applied to the upper or lower edge of the vehicle body opening.

As is clear from the above description, the present invention has the following effects.

(1) Since the guide roller is guided only by one substantially vertical wall, there is no need to accommodate it in the guide rail as in the past, and the width of the guide rail can be reduced, making it safer. At the same time, the appearance becomes cleaner.

(2) Since the diameter of the guide roller is not restricted, the guide roller can be made relatively large in diameter and wear can be reduced.

(3) There is flexibility in the arrangement of the guide rollers and support rollers and the cross-sectional shape of the guide rail, making it easy to apply.

(4) By setting the guide surface of the guide roller on the outer surface of the vehicle body without using a guide rail, the guide rail can be made extremely small and lightweight.

(5) If the distance between the protrusion of the guide rail and the guide surface that guides the guide roller is formed to be smaller in the curved part than in the straight part, the roller will follow the guide rail more smoothly in the curved part. Become.

(6) Since the support rollers do not skid, there is less wear.

(7) When the guide rail is formed as shown in Fig. 7,
Even if an abnormality such as significant wear of the support roller occurs, there is no risk of it falling off and it is safe.

(8) Simple structure and low cost.

[Brief explanation of drawings]

Fig. 1 is a side view of a vehicle equipped with a sliding door, Fig. 2 is an enlarged sectional view of section A in Fig. 1 showing an example of a conventional embodiment, and Fig. 3 is a cross section taken along the line ■-■ in Fig. 2. Figure 4 is B of Figure 1.
FIG. 5 is an enlarged sectional view of section A in FIG. 1 showing an embodiment of the present invention, and FIG. 6A is taken along line a-a in FIG. 5. 6B is a sectional view taken along line b--in FIG. 5; FIG. 7 is a sectional view similar to FIG. 6A showing a different embodiment of the present invention; 1
3.14 is an explanatory diagram showing different embodiments of the present invention, FIG. 10 is an explanatory diagram of a conventional roller trajectory, and 12.1
FIG. 5 is an explanatory diagram showing the roller locus of the embodiment of the present invention in FIGS. 11 and 13, respectively. 1...Vehicle body, 3...Door, 8A, 8B
, 8C. 8D, 8E...Guide rail, 8a...
・Vertical wall surface (guide surface), 12A, 12B, 12G, 1
2D...Roller support, 16.16A, 16B
...Guide roller, 30 ...Protrusion, 3
2...Groove, 33...Support roller, 34
······spring.

Claims (7)

[Scope of utility model registration request] (1) When the door is closed, the outside surface of the door is located approximately on the same plane as the outside surface of the vehicle body, and when the door is opened, the door is located outside the vehicle in a state that is approximately parallel to the outside surface of the vehicle body, and the front edge of the door in the opening direction is A sliding door for a vehicle that is supported by the vehicle body at a total of three locations, approximately at the center in the height direction and at the top and bottom of the rear edge, is attached approximately horizontally to the vehicle body, and has a straight section and a curved section that is continuous with the straight section. a guide rail having a substantially vertical upward protrusion over its entire length; a roller support rotatably supported on a part of the door in correspondence with the guide rail; and the roller support It is supported by a shaft installed approximately horizontally on the
One support roller has a groove formed on its circumferential surface that engages with the protrusion of the guide rail, and is supported by a shaft provided substantially vertically on the roller support, and a part of the outer circumferential surface is formed with the protrusion. at least one guide roller rolling on a vertical guide surface located outside the support roller in the vehicle width direction and formed by the vehicle body or the guide rail and located inside the support roller in the vehicle width direction. A sliding device for a sliding door for a vehicle, characterized in that a sliding mechanism is disposed at a position corresponding to at least one of the three locations. (2) A sliding door for a vehicle according to claim 1 of the utility model registration claim, characterized in that the distance between the guide surface and the protrusion of the guide rail is smaller in the curved part than in the straight part. sliding device. (3) Utility model registration claim 1 or 2, characterized in that only one guide roller is provided on either the front or rear of the support roller, and a spring is provided that biases the roller support body toward the guide surface side. The sliding device for a sliding door for a vehicle according to item 2. (4) The sliding device for a sliding door for a vehicle according to claim 1 or 2, characterized in that one guide roller is disposed before and after the support roller. (5) Practical use characterized in that the guide surface is formed into upper and lower curved surfaces at the curved portion, and the guide rollers are shifted in position up and down so that they roll separately on each curved surface. A sliding device for a sliding door for a vehicle according to claim 4. (6) Practical use characterized in that the guide rail is shaped approximately like a U-shape, and its upper and lower surfaces are provided with opposing protrusions that engage with the grooves of the support roller, and the vertical wall surface is used as the guide surface. A sliding device for a sliding door for a vehicle according to any one of claims 1 to 5. (7) The guide rail is formed into an L-shape, and a protrusion with which the support roller engages is provided on the horizontal surface of the guide rail, and a guide surface with which the guide roller abuts is arranged on the vertical surface below the protrusion. A sliding device for a sliding door for a vehicle according to any one of claims 1 to 5 of the utility model registration claims.