JP3780373B2 - Sliding door support roller - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support roller for a slide door of a vehicle or the like, and more particularly to a support roller for a slide door in which a roller rolling noise is reduced when the door is opened and closed and a bearing capacity is increased.
[0002]
[Prior art]
In recent years, van-type vehicles have been expanded in application so that a comfortable living space is provided in the rear half of the vehicle, which has been used as a conventional luggage compartment, and can also be used as an RV (Recreational Vehicle). A boarding / exiting opening provided on the side of the vehicle is used for boarding / exiting the latter half of the vehicle. The boarding / exiting opening / closing is normally opened and closed by a sliding door. FIG. 5 is a perspective view of a sliding door on the vehicle side surface of the RV vehicle. Usually, the sliding door is provided with support rollers 11A, 11B, 11C, 11D and the like at the upper and lower edges and intermediate positions of the door body 10, and rolls on the guide rails 21A, 21B, 21C, 21D on the vehicle body side. Thus, opening and closing is performed smoothly.
[0003]
As shown in FIG. 6, the support roller 11 </ b> D (same as 11 </ b> A, 11 </ b> B,...) Has a metal ball bearing 12 that is coupled to the support shaft 31 and rotates, and an outer periphery of the ball bearing 12. It is composed of a synthetic resin outer skin 13 formed integrally. The reason why the outer skin 13 is made of synthetic resin is to reduce the rolling noise of the support roller 11D when the door is opened and closed.
The ball bearing 12 is composed of an inner ring 14 fixed to a support shaft 31, an outer ring 16 rotatably mounted, and a ball 15 disposed between the inner ring 14 and the outer ring 16, and A groove 16 b is provided in the center of the outer ring 16. Therefore, the synthetic resin outer skin 13 formed integrally with the outer ring 16 has a thick central portion.
[0004]
The sliding door is performed by swinging the door body 10 rearward and outward along the guide rail 21D at the time of opening and closing. The swinging amount of the upper edge of the door body 10 is the swinging of the lower edge of the door body 10. Less than the amount. This is in order to suppress the amount of protrusion in the in-vehicle direction of the stage to which the upper support roller 11D is attached. For this reason, as shown in FIG. 7A, the inclination angle of the sliding door is increased when not closed, and the support roller 11D is provided with a vehicle (step under panel) as shown in FIG. 7B. ) Is substantially perpendicular to the receiving surface 30. At the time of closing, as shown in FIG. 8 (A), the inclination angle of the sliding door is made small, and as shown in FIG. 8 (B), the support roller 11D is received by the step under panel. It is in contact with the surface 30 at an angle.
[0005]
[Problems to be solved by the invention]
As described above, the ball bearing 12 used for the sliding door has a thick central portion and a thin outer portion of the synthetic resin outer shell 13 formed integrally with the outer ring 16. The load is supported by the thick wall at the center when the contact time with the receiving surface 30 is short, and the load is supported at the end of the thin wall when the contact time with the receiving surface 30 is long. -This is a preferable shape for preventing (sagging). However, from the viewpoint of bearing performance, since the outer ring 16 has a groove 16b formed in the central portion of the outer periphery, the thinnest portion is formed between the bottom of the raceway surface 16a and the groove 16b, and a deep groove is secured in the outer ring 16. There was a problem that it was impossible to do. Therefore, when securing the wall thickness of the outer ring raceway and providing a deep groove, it is necessary to increase the outer diameter of the synthetic resin or reduce the thickness of the synthetic resin. Furthermore, since the V-groove shape of the groove 16b provided on the outer peripheral side of the outer ring 16 is a special shape, there is a problem that a dedicated cutting tool is required and the groove machining cost increases.
[0006]
The present invention has been made to cope with the above-described problems, and while ensuring the creep strength of the synthetic resin, it also ensures the static strength (bearing capacity) as a ball bearing, and further reduces the manufacturing cost. An object of the present invention is to provide a supporting roller for a sliding door.
[0007]
[Means for Solving the Problems]
In other words, in order to solve the above-described problems, the present invention is a sliding door for a van-type vehicle that swings outward from a state in which the entrance on the side of the vehicle is closed to the outside of the vehicle. A receiving surface provided on the vehicle body with a sliding door in which the vertical angle of the door body changes between a closed state and a non-closed state because the swing amount between the door bodies is smaller than the swing amount of the lower edge of the door body In the support roller of the slide door that supports the slide door while rolling over,
The support roller (1) includes an inner ring (4) attached to a support shaft (31) , a rotatable outer ring (6) , a ball (5) disposed between the inner and outer rings, and the ball (5). A ball bearing (2) composed of a retainer (7) for retaining the outer ring (6), and a synthetic resin outer cover (3) integrally coated on the outer peripheral side of the outer ring (6) . The outer skin (3) is set to a shape having a substantially central portion of the outer diameter of the bearing, and when the sliding door is not closed, a substantially central portion of the synthetic resin outer skin (3) is used as a load position, and When the slide door is closed, a position shifted from the center of the synthetic resin outer cover (3) toward the end is set as a load position, and concave grooves (6b, 6c) are formed on the outer periphery of the outer ring (6). concave grooves (6b, 6c) bottom, located at the outer end side of the outer ring raceway surface (6a) bottom It is characterized in that only are.
[0008]
Further, a stepped portion (6d, 6e) is formed on the outer periphery of the outer ring (6 ) of the ball bearing (2) near the end of the outer peripheral surface, and the stepped portion (6d, 6e) is formed on the outer ring raceway. It is characterized in that it is provided so as to start from a position farther to the left and right than the width (h) of the surface (6a).
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. In addition, in order to avoid duplication description, the same code | symbol as the code demonstrated by the prior art is used for the same element. FIG. 1 is an axial sectional view of a first embodiment of a support roller for a sliding door according to the present invention. The support roller 1 includes a ball bearing 2 that is fixed to a support shaft 31 and a synthetic resin outer skin 3 that is integrally formed on the outer periphery of the ball bearing 2. The ball bearing 2 holds an inner ring 4 fixed to a support shaft 31, an outer ring 6 that is rotatable, balls 5... Arranged between the inner ring 4 and the outer ring 6, and the ball 5. And the retainer 7 to be configured. Further, in order to prevent dust and muddy water from entering the inner space between the inner ring 4 and the outer ring 6, and to prevent the leakage of the lubricant, sealing seals 8, 8 is attached.
[0010]
The sliding door to which the support roller 1 is mounted is a sliding door of a van type car that is swung out from the state in which the entrance / exit on the side of the vehicle is closed as in the sliding door shown in FIG. Thus, the door body is provided on the slide door in which the vertical angle of the door body changes between the closed state and the non-closed state because the swing amount between the door bodies is smaller than the swing amount of the lower edge of the door body. The support roller 1 also supports the slide door while rolling on a receiving surface provided on the vehicle body.
[0011]
On the outer peripheral surface of the outer ring 6, there are provided two semicircular grooves 6b, 6c having a larger groove bottom diameter. The bottoms of these grooves 6b and 6c are provided at positions outside the position (width) of the raceway surface 6a of the outer ring 6. Further, the shortest distance x from the bottom of these grooves 6b, 6c to the raceway surface 6a of the outer ring 6 is made slightly shorter than the shortest distance y from the outer surface of the outer ring 6 to the bottom of the raceway surface 6a. In this case, the grooves 6b and 6c can be processed using a normal commercially available tool. In this way, the outer cover 6 made of synthetic resin is integrally covered on the outer side of the outer ring 6 provided with the two grooves 6b and 6c at a position slightly apart from the bottom of the raceway surface 6a. The outer skin 3 made of synthetic resin is for reducing the rotational noise of the ball bearing 2 when the door is opened and closed, and a little R is provided on the outer surface for easy rolling.
[0012]
As shown in FIG. 2 (A), the sliding door support roller 1 of the present invention having the above-described structure is provided on a receiving surface (receiving surface of the step under panel) 30 provided on the vehicle body when the sliding door is not closed. When the sliding door is closed, the support roller 1 is inclined to contact the receiving surface 30 of the step under panel as shown in FIG. 2B. In this case, since the distance from the bottom of the raceway surface 6a of the outer ring 6 to the outer peripheral surface of the outer ring is increased, the bearing capacity can be increased. And the synthetic resin-made outer skin 3 can also prevent creep by making the wall thickness slightly thinner.
[0013]
Next, FIG. 3 is an axial sectional view of a second embodiment of the support roller for the sliding door according to the present invention. In this embodiment, stepped portions 6d and 6e are provided on the outer peripheral surface of the outer ring 6 near both ends. These stepped portions 6d and 6e are provided so as to start from a position separated from the left and right by the width h of the raceway surface 6a of the outer ring 6. The shortest distance w from the bottom of these stepped portions 6d and 6e to the raceway surface 6a of the outer ring 6 is equal to or slightly shorter than the shortest distance z from the outer surface of the outer ring 6 to the bottom of the raceway surface 6a. It is. In this way, the outer cover 6 made of synthetic resin is integrally covered on the outer side of the outer ring 6 provided with the two stepped portions 6d and 6e at a position slightly apart from the bottom of the raceway surface 6a.
[0014]
When the slide door is closed, the slide roller support roller 1 of the second embodiment configured as described above is substantially perpendicular to the receiving surface 30 of the slide door step under panel as shown in FIG. When the sliding door is closed, the support roller 1 is inclined to contact the receiving surface 30 of the step under panel. However, since the distance from the bottom of the raceway surface 6a of the outer ring 6 to the outer peripheral surface can be increased, the bearing capacity can also be increased. And the synthetic resin-made outer skin 3 can also prevent creep by making the wall thickness slightly thinner. In this embodiment, since the stepped portion 6e is formed in the vicinity of the position of the sealing seal 8, the outer ring 6 is thin on the outer side, but the load is applied in the direction of the ball 5, and the sealing seal 8 There is no problem because it does not work.
[0015]
In the first embodiment, one groove, that is, the groove 6c on the side that inclines and contacts the receiving surface 30 of the step underpanel is eliminated, and only the other groove 6b is used. In the embodiment, the stepped portion 6e on the side contacting the inclined surface with the receiving surface 30 of the step under panel may be omitted, and only the other stepped portion 6d may be provided.
[0016]
【The invention's effect】
As described above in detail, according to the support roller for the sliding door of the present invention, the static capacity is increased by increasing the bearing capacity of the ball bearing portion while maintaining the creep strength of the outer skin portion made of synthetic resin. Can also be improved. Further, the manufacturing cost can be reduced.
[Brief description of the drawings]
FIG. 1 is an axial sectional view of a first embodiment of a support roller for a sliding door according to the present invention.
FIG. 2 (A) is a view showing a contact state of the support roller of the slide door according to the first embodiment of the present invention with the receiving surface of the step under panel when the slide door is not closed. FIG. 2B is a diagram showing a contact state when the slide door is closed.
FIG. 3 is an axial cross-sectional view of a second embodiment of a support roller for a sliding door according to the present invention.
FIG. 4 (A) is a view showing a contact state of a support roller of a slide door according to a second embodiment of the present invention with a receiving surface of a step under panel when the slide door is not closed. FIG. 2B is a diagram showing a contact state when the slide door is closed.
FIG. 5 is a perspective view of a sliding door on the vehicle side surface of a conventional RV vehicle.
FIG. 6 is an axial sectional view of a conventional support roller of a sliding door.
FIG. 7 (A) shows a tilted state when the conventional sliding door is not closed, and FIG. 7 (B) shows a contact state with the receiving surface of the step under panel at that time.
FIG. 8A shows a tilted state when the conventional sliding door is closed, and FIG. 8B is a diagram showing a contact state with the receiving surface of the step under panel at that time.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Support roller 2 Ball bearing 3 Synthetic resin outer skin 4 Inner ring 5 Ball 6 Outer ring 6a Outer ring raceway surface 6b, 6c Recessed groove 6d, 6e Stepped part 7 Cage 8 Sealing seal 31 Support shaft 30 Receiving surface

Claims (2)

A sliding door of a van-type car that swings out and opens from the state where the entrance on the side of the vehicle is closed to the outside of the vehicle, and is closed because the amount of protrusion between the door bodies is smaller than the amount of protrusion of the lower edge of the door body In a sliding door supporting roller that supports the sliding door while rolling the sliding door whose vertical angle of the door body changes between the state and the non-closed state on the receiving surface provided on the vehicle body,
The support roller (1) includes an inner ring (4) attached to a support shaft (31) , a rotatable outer ring (6) , a ball (5) disposed between the inner and outer rings, and the ball (5). A ball bearing (2) composed of a retainer (7) for retaining the outer ring (6), and a synthetic resin outer cover (3) integrally coated on the outer peripheral side of the outer ring (6) . The outer skin (3) is set to a shape having a substantially central portion of the outer diameter of the bearing, and when the sliding door is not closed, a substantially central portion of the synthetic resin outer skin (3) is used as a load position, and When the slide door is closed, a position shifted from the center of the synthetic resin outer cover (3) toward the end is set as a load position, and concave grooves (6b, 6c) are formed on the outer periphery of the outer ring (6). concave grooves (6b, 6c) bottom, located at the outer end side of the outer ring raceway surface (6a) bottom Only the support of the slide door (b), characterized in that are - La. The outer ring (6) the outer periphery of the ball bearing (2) is stepped portion towards the end portions of the outer peripheral surface (6d, 6e) to form a, portion with stepped (6d, 6e) is, the outer ring raceway surface ( 6. The support roller for a slide door according to claim 1, wherein the support roller is provided so as to start from a position farther left and right than the width of 6a) .

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