JPH074310Y2 - Orido's pivot bracket - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a folding door pivot bracket,
The present invention relates to a pivot bracket used for a fixed hanging door.

[Conventional technology]

2. Description of the Related Art Conventionally, a pivot receiving metal fitting of this type is known in which a metal fitting body fixed in a rail is integrally provided with a hole or a bag-shaped recess for engaging the tip of the pivot. The metal fitting body is fixed to the inside of the rail by, for example, sandwiching the projecting edge in the rail groove between the metal fitting body and a nut member screwed to the metal fitting body via a screw member. The pivot is composed of a case body embedded in the end surface of the folding door and a shaft body screwed into the case body.
The vertical position of the folding door can be adjusted by adjusting the amount of protrusion of the shaft body.

Further, Japanese Utility Model Laid-Open No. 63-129077 proposes a structure in which a nut member is rotatably provided on a metal fitting body and a cup portion for supporting a tip end of a pivot is screwed onto the nut member. By rotating the nut member, the cup portion is moved up and down to vertically adjust the folding door. Corresponding to this bracket, the pivot is provided with a thrust bearing structure.

[Problems to be solved by the device]

By the way, in the above-mentioned structure in which a hole or a concave portion is simply formed in the metal fitting body, the contact between the tip of the pivot and the metal fitting body is a surface contact, so that the frictional resistance is large and the pivoting at the time of folding is not smooth. was there. Especially on the lower side of the shaft suspension type, the weight of the folding door is concentrated, so that the problem due to the increase in frictional resistance becomes remarkable.

In addition, in the one disclosed in Japanese Utility Model Laid-Open No. 63-129077, the pivot bracket can be used for vertical adjustment, and the bearing structure of the pivot can avoid the above-mentioned problem due to frictional resistance, but when installing the folding door, Conventional products cannot be used for both the pivot bracket and the pivot, resulting in an increase in mounting cost.

In view of this, the present invention provides smooth pivoting when folded, and by using a conventional one, it is possible to easily adjust up and down of the folding door, improving operability and reducing installation cost. The purpose is to provide metal fittings.

[Means for Solving the Problems]

This invention was created to achieve the above-mentioned purpose,
The feature is that it has a metal fitting body fixed in the rail and a cup portion that is rotatably provided on the metal fitting body via rolling elements and supports the tip of the pivot of the folding door.

Further, according to this invention, the metal fitting main body fixed to the inside of the rail, which has the fitting recessed portion that opens on the pivot side of the folding door, and the fitting recessed portion that is inserted from the opening side and is prevented from coming off and rotatably provided. A cup portion that supports the tip of the pivot and a rolling element that is provided between the cup portion and the fitting recess can be provided.

[Action]

According to this invention, the rolling element provides a contact state between the metal fitting body and the cup portion due to rolling friction. As a result, when the folding door is folded, the pivot and the cup portion are integrally rotated, and rubbing between the tip of the pivot and the cup portion is avoided.

Further, by using a conventional pivot capable of vertical adjustment, the vertical position of the folding door can be adjusted as necessary.

〔Example〕

 1 to 6 show an embodiment of the present invention.

This is an example of a shaft suspension type in which the weight of the folding door is supported below the folding door. As shown in FIG. 4, between the upper rail 2 and the lower rail 4, there is a folding door 6 on the moving side and on the hanging side. Folding doors 8 are provided side by side, and adjacent ends are connected by hinges 10 so that they can be folded.

The runners 12 and 12 are provided on the upper and lower ends of the folding door 6 on the moving side, and the pivots 14 and 16 are provided on the upper and lower ends of the folding door 8 on the hanging side. Further, the upper rail 2 and the lower rail 4 are provided with pivot brackets 18 and 20 for supporting the pivots 14 and 16, respectively.

As shown in FIGS. 1 to 3, the lower pivot bracket 20 is rotatable via a bracket body 22 fixed in the lower rail 4 and a rolling element 24 such as a steel ball in the bracket body 22. And a cup portion 26 provided in the. The metal fitting body 22 can be composed of, for example, a main member 28 that constitutes the whole, a rectangular piece-shaped sub member 30 that is fitted to the main member 28, and a rolling element accommodating portion 32 that is fitted to the sub member 30. .

An insertion hole 28a into which the screw member 34 is inserted is formed on one end side in the longitudinal direction of the main member 28, and a plate-shaped nut member 36 is screwed into the screw member 34. By sandwiching the projecting edges 4a, 4a of the lower rail 4 with the nut member 36, the main member 28 is fixed to the lower rail 4. By forming the raised portion 36a on the peripheral edge of the nut member 36, it is possible to obtain a fixed state in which loosening is unlikely to occur due to the elastic action. Also, on the other end side of the main member 28, fitting convex portions 28b, 28b for the sub member 30 are formed at intervals in the longitudinal direction, and the fitting convex portion 2
A fitting hole 28c for the cup portion 26 is formed at a position intermediate between 8b and 28b.

Fitting concave portions 30a, 30a corresponding to the fitting convex portions 28b, 28b of the main member 28 are formed at both ends of the sub member 30, and a holding concave portion 30b for holding the rolling element accommodating portion 32 is formed at a substantially central portion. Are formed. In this example, the main member 28 and the sub member 30 are made of synthetic resin such as 6 nylon, and the cup portion 26 and the rolling element accommodating portion 32 are made of metal.
It is pressed into b. An annular projecting edge 30c is provided on the upper end of the holding recess 30b in order to prevent the rolling element accommodating portion 32 from coming off after being fitted.
Are formed. In addition, the fitting protrusions 28b, 28b of the main member 28
Further, insertion holes 28d, 30d for inserting the stop pin 38 are formed at both ends of the sub member 30, respectively.

The rolling element accommodating portion 32 has an annular accommodating groove for accommodating the rolling element 24.
32a is formed, and a conical concave portion 32c corresponding to the conical convex portion 26a of the cup portion 26 is formed on the central shaft portion 32b.
This makes it possible to obtain a function of preventing axial misalignment, which will be described later. Of course, this configuration is not necessary.

The cup 26 has a pivot 16 on the side opposite to the conical protrusion 26a.
An engaging recess 26b is formed to support the tip 42a, and a chamfer 26c is formed at the opening end of the engaging recess 26b to facilitate the engagement of the pivot 16. Also, the cup part 2
A flange portion 26d for preventing the main member 28 from coming off is formed near the conical convex portion 26a of 6, and the support of the cup portion 26 with respect to the pivot 16 is flexibly provided at the corresponding portion of the main member 28. The spot facings 28e, 28e are formed so as to be made.
Further, a gap 39 is set between the contact surface 26e of the cup portion 26 with respect to the rolling element 24 and the upper surface 32e of the rolling element accommodating portion 32 so that the function of the rolling element 24 due to rolling friction is not hindered.

The pivot 16 is a conventional one, and includes a case body 40 embedded in the lower end of the folding door 8 and the case body 40.
And a shaft main body 42 that is screwed onto and attached to.

When the folding doors 6 and 8 are folded in the above configuration, the weight of the folding door 8 is concentrated on the tip 42a of the pivot 16, so that the friction coefficient between the cup portion 26 and the tip 42a of the pivot 16 becomes extremely large. However, since the cup portion 26 is supported below by the rolling elements 24, the function of the rolling elements 24 due to the rolling friction has priority, and the cup portion 26 and the tip 42a of the pivot 16 rotate integrally. As a result, the frictional resistance during rotation is reduced as much as possible, and the influence of the weight of the folding door 8 is avoided. Therefore, it is possible to improve the turning operability at the time of folding. Further, the vertical adjustment of the folding door 8 can be easily performed by adjusting the screwing amount of the shaft body 42 of the existing pivot 16, as shown in FIG. That is, the shaft body 42
The vertical position of the folding door 8 can be adjusted by (d ₂ −d ₁ ) by changing the screwing amount of d from d ₁ to d ₂ .

By doing so, not only can the operability for turning at the time of folding be improved, but also the use of the existing pivot 16 can reduce the attachment cost.

In this example, the contact surface structure between the metal fitting body 22 and the cup portion 26 is specified, but the structure is not limited to this. For example, as shown in FIG. 13, the cup portion 26 accommodates the rolling element 24. The rolling element 24 can be constructed by providing the groove 26f.
Can be appropriately changed within a range in which the rolling friction function can be obtained. In the example shown in the figure, the conical concave portion 26g is formed in the cup portion 26 and the conical convex portion 32f is formed in the rolling element accommodating portion 32, which is the reverse mode.

As a separate means for fixing the main member 28 to the lower rail 4, an oval nut member 44 can be used instead of the nut member 36, as shown in FIG. The nut member 44 is formed such that the horizontal width dimension m is smaller than the dimension s between the projecting edges 4a, 4a of the lower rail 4 and the vertical width dimension n is larger than the maximum width t of the rail groove. Further, the screw hole 44a is formed so that it can be screwed onto the screw surface of the screw member 34 with a degree of close contact that does not cause natural rotation. In accordance with this configuration, the first
If the maximum dimension p of the engaging portion of the pivot bracket 20 is made smaller than the dimension s between the projecting edges 4a, 4a of the lower rail 4 by reducing the diameter of the rolling element 24, as shown in FIG.
The pivot bracket 20 can be arbitrarily engaged with the lower rail 4 from the upper surface side, making it easier to redo due to an engagement error of a different member as compared with the conventional method of engaging from the rail end.
Workability can be improved. After engagement, screw member
By rotating 34, the nut member 44 rotates and both ends of the nut member 44 come into contact with the side surfaces of the lower rail 4 so that the nut member 44 is prevented from rotating. When the screw member 34 is further rotated, the nut member 44 is screwed and the projecting edges 4a, 4a are clamped, so that a fixed state is obtained.

Next, the function of preventing axial misalignment by the conical convex portion 26a and the conical concave portion 32c formed between the cup portion 26 and the rolling element accommodating portion 32 will be described.

As shown in FIG. 6, the conical convex portion 26a of the cup portion 26 is
It is formed in a conical shape having an apex on the axis R of the cup portion 26. Pivot by moment action due to the weight of the folding door 8
When a force F that displaces the shaft center of 16 is generated and the shaft center R is displaced to the R ₁ position, one side surface 26h of the conical projection 26a and the conical recess
Although the side surface 32g of 32c closely contacts, the weight W of the folding door 8 is always acting on the conical convex portion 26a, so that it is pushed back to the normal axial center R position by the horizontal component force F ₁ . Therefore, since the axial misalignment is always corrected, it is possible to avoid the adverse effect on the turning operation due to the unstable center of gravity of the folding door 8. The conical convex portion 26
a is formed in a truncated conical shape with the top cut so that the function of preventing axial misalignment with the conical recess 32c can be reliably obtained and the rolling friction function of the rolling element 24 is not hindered. Is desirable.

Next, the pivot 14 attached to the upper end of the folding door 8 and the pivot bracket 18 fixed to the upper rail 2 will be described.

Although the above-described pivot bracket 20 can be used in the same manner in the upper part, a simple structure that makes use of the characteristics of the shaft suspension type is adopted. That is, as shown in FIG. 7 to FIG. 9, the pivot receiving fitting 18 includes the fitting main body 46 and the fitting main body 46.
And a receiving recess 48 formed integrally therewith. In the case of the shaft suspension type, since the thrust due to the weight of the folding door 8 does not act above, the bearing structure using the rolling elements 24 can be omitted. The metal fitting body 46 has an insertion hole 46a formed therein, and is fixed to the upper rail 2 in the same manner as the pivot receiving metal fitting 20. Reference numeral 46b indicates a leg piece of the metal fitting body 46.

The pivot 14 is a case body embedded in the upper end of the folding door 8.
49 and a pivot shaft 50 fitted in the case main body 49. A spring 52 is housed in the case body 49, and the pivot shaft 50 is always biased so as to project upward. A small diameter portion 50a is attached to the tip of the pivot shaft 50.
The engaging head 54 with respect to the receiving recess 48 is rotatably fitted and inserted into the small diameter portion 50a. Locking head 54
Is composed of an engaging base portion 54a having a diameter larger than the diameter of the pivot shaft 50, and a substantially conical shaft center adjusting surface 54b continuously provided on the tip side of the engaging base portion 54a.

The insertion head 54 has a large diameter insertion hole 54c and a small diameter insertion hole 54d.
Are formed so as to communicate with each other, and the small diameter portion 50a of the pivot shaft 50 is inserted through the small diameter insertion hole 54d and the tip thereof is crimped to prevent the engagement head 54 from coming off.
Reference numeral 56 indicates a washer.

Corresponding to the pivot shaft 50, the receiving recess 48 is formed with a housing recess 48a for housing the engagement base portion 54a and a guide inclined surface 48b for guiding the shaft center adjusting surface 54b in communication with each other. Shaft center adjustment surface 54b
Is formed in a truncated cone shape having an apex on the axis R of the pivot shaft 50. As shown in FIG. 10, when the moment F due to the weight of the folding door 8 causes a force F ₂ to shift the axial center of the pivot 14 and the regular axial center R is displaced to the R ₁ position, the axial center adjustment surface 54b is One side surface 54e and the opposite side surface 48c of the guide inclined surface 48b.
Doo is but closely, because it is always urging force of the spring 52 in the axial adjusting surface 54b is acting, is pushed back by the horizontal force F ₃ to the axis R a normal position. Therefore, since the axial misalignment is always corrected, it is possible to avoid the adverse effect on the turning operation due to the unstable center of gravity of the folding door 8. Next, the runners 12 attached to the upper and lower ends of the folding door 6 on the moving side will be described with reference to FIGS. 11 and 12.

The runner 12 is a case body 58 embedded in the end surface of the folding door 6.
And the shaft main body 60 housed in the case main body 58,
It is composed of a runner body 62 rotatably provided at the tip of 60. Although not shown, a spring is attached to the case main body 58 similarly to the pivot 14, and the shaft main body 60 is biased outward. A small diameter part 60a is attached to the tip of the shaft body 60.
Is formed, and the insertion hole 62 is correspondingly formed in the runner main body 62.
a is formed. The runner body 62 has a large-diameter base portion 62b,
The insertion part 62c has a small diameter, and the base 62b and the insertion part 62c communicate with the insertion hole 62a.
62d and 62e are formed. Further, an annular groove 62f for accommodating the sphere 64 is formed in the concave portion 62d of the base portion 62b, and an annular convex portion abutting on the projecting edges 2a, 4a of the upper rail 2 and the lower rail 4 is formed at the outer end of the base portion 62b. The portion 62g is formed. sphere
The washer 66 is secured by a washer 66. After insertion, the tip of the shaft main body 60 is caulked through a washer 68 to prevent the runner main body 62 from coming off.

Next, FIG. 15 and FIG. 16 show another embodiment of the present invention, in which the above-mentioned example has a structure in which a cup part and the like are incorporated by dividing the metal fitting body into a divided structure, while the number of parts is reduced and the assembly is reduced. It is intended for facilitation. The same parts as those in the above example are designated by the same reference numerals.

The metal fitting body 70 of the pivot receiving metal fitting 69 is formed with a convex portion 72 projecting inward of the lower rail 4, and the convex portion 72 is formed with a fitting concave portion 74 opening to the side of the pivot 16. . Further, a countersink-shaped through hole 76 facing the outer surface of the metal fitting body 70 is continuously provided on the bottom surface of the fitting recess 74. Reference numeral 70a indicates an insertion hole for the screw member 34.

A base member 78 is provided on the bottom surface of the fitting recess 74, and a cup portion 80 is fitted through the rolling element 24. The cup portion 80 can be composed of, for example, a large-diameter main body portion 82 and a small-diameter shaft portion 84 integrally provided on the bottom surface side of the main body portion 82. An engagement recess 82a for supporting the tip 42a of the pivot 16 is formed in the main body portion 82, and a chamfered portion 82b is formed at the opening end of the engagement recess 82a for smooth engagement of the pivot 16. ing. On the other hand, the shaft portion 82 is formed with a processing hole 84a for performing a retaining process.

The base member 78 is formed, for example, in a ring shape having a large-diameter collar portion 78a on the bottom surface side, and the shaft portion 84 of the cup portion 80 is formed in the center portion.
An insertion hole 78b for passing the through hole is formed. Beth member 78
The step portion 78c forms a rolling path of the rolling element 24 with the side surface of the fitting recess 74.

The cup portion 80 is fitted from the opening side of the fitting concave portion 74, and the tip of the shaft portion 84 after fitting is caulked to be held in a retaining state. If a slight gap is created between the pivot 16 and the through hole 76 in the state where the retaining process is performed, it is possible to flexibly cope with the axis deviation of the pivot 16.

Next, FIG. 17 and FIG. 18 show a modified example of the retaining structure.

That is, for example, an annular groove 84b is formed on the outer peripheral surface of the shaft portion 84, and an annular convex portion 76a that engages with the annular groove 84b is formed in the through hole 76 correspondingly. Therefore, by forcibly fitting the cup portion 80 into the fitting recess 74, it is possible to easily obtain a retaining state. Of course, the annular groove 84b and the annular convex portion 76a are not limited to this example, but can be provided, for example, between the main body portion 82 and the fitting concave portion 74, or can be provided relatively.

By adopting such a structure that the fitting recess 74 is fitted from the opening side to prevent the fitting recess 74 from coming off, the number of parts can be reduced and the assembling can be facilitated, so that the manufacturing cost can be reduced.

[Effect of device]

According to this invention, the rolling element can provide a smooth contact state between the cup portion and the metal fitting body due to rolling friction.
As a result, the folding door can be smoothly rotated when folded, and the operability of the rotation can be improved.

Further, since the existing pivot can be used to easily adjust the folding door up and down, the mounting cost can be reduced.

Further, by adopting a structure in which the fitting recess is fitted from the opening side to prevent the fitting recess from coming off, the number of parts can be reduced and the assembling can be facilitated, whereby the manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is a view showing an embodiment of a pivot door fitting of a folding door according to the present invention. FIG. 1 (A) is a sectional view of a state of use, FIG. 1 (B) is its side view, and FIG. 2 is an exploded perspective view. Fig. 3 is a plan view of the main part of the metal fitting body, and Fig. 4 is a perspective view showing a state of use.
FIG. 5 is a diagram showing the vertical adjustment of the folding door by adjusting the pivot, FIG. 6 is a diagram showing the function of preventing axial misalignment, and FIG. 7 is a diagram showing the pivot and the pivot bracket on the upper portion of the folding door. (A) is a cross-sectional view of a state of use, (B) is a side view of the main part thereof, FIG. 8 is an exploded perspective view of the pivot bracket shown in FIG. 7, and FIG. 9 is a cross-sectional view of the main part of the pivot. Figures and 10 show the function of preventing axial misalignment in the upper part of the folding door, Fig. 11 is a side view of the runner, Fig. 12 is a cross-sectional view of the relevant parts, and Fig. 13 is the pivot bracket shown in Fig. 1. FIG. 14 is a perspective view showing another example of the fixing structure of the pivot bracket, FIG. 15 is a view showing another example, and FIG. FIG. 16B is a schematic side view of the same, FIG. 16 is an exploded perspective view, FIG. 17 is a sectional view showing a modified example of the retaining structure, and FIG. 2 …… Upper rail (rail) 4 …… Lower rail (rail) 6,8 …… Folding door, 22,70 …… Bracket body 24 …… Rolling element, 26,80 …… Cup portion 42a …… Pivot tip 74… ... Recessed recess

Claims (2)

[Scope of utility model registration request] 1. A pivot receiving metal fitting for a folding door, comprising: a metal fitting main body fixed in a rail; and a cup portion rotatably provided on the metal fitting main body via a rolling element to support a pivot tip of the folding door. 2. A metal fitting main body having a fitting recess opened to the pivot side of the folding door and fixed in the rail; and a pivot tip provided rotatably while being inserted into the fitting recess from the opening side so as not to come off. A pivot receiving fitting for a folding door, which is provided with a cup portion for supporting the roller and a rolling element provided between the cup portion and the fitting recess.