JPH10196206A - Pivot unit for door panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pivot unit that can lightly open/close a door panel hardly generating looseness in a service state and can be applied to a large-sized door panel without hindrance. SOLUTION: A pair of semicylindrical bodies 10a integrally injection-molded are jointed to form a case 10. A bearing piece 14 is clamp-fixed between one ends of both semicylindrical bodies 10a, and a bearing part 18 is provided between joint faces of the other end. A pivot 11 is supported without looseness by the bearing piece 14 and bearing part 18. The pivot 11 is energized to advance toward the outside of a case by a spring 12 accommodated in the case 10. The case 10 is press-fitted to a fitting frame 7 of a door panel so as to prevent a backlash of a pivot unit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pivot shaft unit for a door panel having a vertical support shaft.
The pivot shaft unit is used as a pivot runner for a folding door or a furniture door, or as a pivot for supporting a hanging base of the folding door.

[0002]

2. Description of the Related Art A shaft unit of this kind is disclosed in Japanese Utility Model Publication No. 6-34.
No. 536 is known. As shown in FIG. 8, the pivot shaft 51 is slidably supported by a press-molded case 50 so as to be vertically slidable.
2, the pivot shaft 51 is urged to advance outside the case. The case 50 includes a square tubular case main body 53 formed by punching a plate material into a cross shape and then bending each of the four peripheral walls, and an end plate 54 that engages with a pair of opposed peripheral walls. The other pair of peripheral walls also serves as an engaging body for elastically engaging the case 50 with the mounting frame 55, and at its free end, a stopper wall 56 for holding the peripheral wall of the mounting hole in and out, and a retaining claw. 57 are provided. The pivot shaft 51 is connected to the case body 5.
2 and the hole 5 passing through the end plate 54.
9 is supported so as to be able to slide up and down. Reference numeral 60 denotes a door panel, and 61 denotes a guide rail.

[0003] In the present invention, a case of a shaft unit is formed by joining integrally formed half-cylinder half cylinders, and this type of shaft unit is known in Japanese Patent Application Laid-Open No. Hei 8-277675.

[0004]

As described above, in the shaft unit that supports the pivot shaft 51 only with the press-formed parts, the holes 58 and 59 provided in the end wall and the end plate 54 of the case body 53 and the pivot shaft 51 are provided. , Or between the case 50 and the mounting frame 55, it is inevitable that a certain amount of play gap is generated. Further, the four peripheral walls of the case main body 53 are received and supported only by the square holes provided in the mounting frame 55, so that there is room for adjacent peripheral walls to float with each other. Therefore, the pivot shaft 51 and the entire shaft unit are likely to rattle during long-term use, generating noise when the door panel 60 is opened and closed, and the shaft unit biting into the guide rail 61 during opening and closing, so that smooth opening and closing is possible. May not be possible. In particular, when the shaft unit is applied to a large and heavy door panel, the above-described problems are likely to occur.

[0005] The above-mentioned shaft unit is provided with a threaded portion on a part of the pivot shaft 51, and is also used as a swing support shaft whose height can be adjusted. In that case, the hole 58 provided in the end wall of the case main body 53 is changed to a screw hole, and the pivot shaft 51
And the adjustment height can be fixed with a lock nut. Therefore, at the time of adjustment, it is necessary to loosen the lock nut, then perform the tightening / loosening operation of the pivot shaft 51, and then tighten and lock the lock nut again. When the lock nut is tightened, the pivot shaft 51 is likely to rotate and rotate, so it is difficult to adjust the height by a small amount.

SUMMARY OF THE INVENTION An object of the present invention is to provide a pivot shaft unit which is less likely to rattle during long-term use, can always open and close the door panel lightly, and can exhibit sufficient durability even with a large and heavy door panel. To provide. Another object of the present invention is to change only a part of an assembled part,
It is an object of the present invention to provide a pivot shaft unit that can be used as a pivot runner or as a pivot for supporting a suspension of a door panel. Another object of the present invention is to provide a pivot shaft unit having a height adjustment mechanism capable of performing height adjustment easily and fine adjustment.

[0007]

SUMMARY OF THE INVENTION The present invention provides a vertically long cylindrical case 10 having a flange 16 projecting at one end.
And a pivot shaft unit including a pivot shaft 11 penetrating the case 10 up and down and a spring 12 housed in the case 10 and urging the pivot shaft 11 to move outside the case. The case 10 is divided by a plane passing through the center axis thereof, and is formed by joining a pair of half-cylinder bodies 10a, 10a integrally formed with plastic via a bridging portion 25. A bearing piece 14 is arranged at one end of the case 10, and the bearing piece 14 is sandwiched and fixed between a pair of half-cylinder bodies 10a. Near the end on the flange 16 side of both half cylinders 10a,
A bearing portion 18 that supports the pivot shaft 11 in cooperation with the bearing piece 14 is provided. At the end of the case 10 on the flange 16 side, a lock ring 15 for joining and holding the half-cylinder body 10a inseparably is fitted. An elastically deformable retaining claw 32 is provided on the peripheral surface of the lock ring 15.

More specifically, as shown in FIG. 1, a pivot shaft 11 is supported by a bearing piece 14 and a bearing portion 18 so as to be slidable up and down, and a spring 12 extends from the end on the flange 16 side to the outside of the case. Energize to move. Protrusions 29 for temporary holding are formed near the forward end of the pivot shaft 11. At the end of the case 10 on the flange 16 side, a keyhole-shaped holding portion 17 for engaging and catching the projection 29 is provided. The pivot shaft unit of this embodiment is mainly used as a pivot runner.

A screw shaft 35 is formed at one end of the pivot shaft 11 and screwed into a screw hole 38 provided in the bearing piece 14. A projection 37 for receiving a spring is formed on the peripheral surface of the pivot shaft 11 facing the inside of the case 10. The cam piece 34 is accommodated in the case 10 while being loosely fitted to the pivot shaft 11, and the cam piece 34 is non-rotatably held by the case 10. The cam piece 34 is moved and biased toward the projection 37 by the spring 12 disposed between the cam piece 34 and the bearing portion 18. At least one cam portion 40 that engages with the protrusion 37 is formed on the surface of the cam piece 34 that contacts the protrusion 37. The pivot shaft unit of this embodiment is mainly used as a pivot shaft whose height can be adjusted as shown in FIG. 6, but can also be used as a pivot runner.

The case 10 is inserted and mounted in mounting holes 7a provided in the upper and lower walls of the mounting frame 7 of the door panel 1. Case 1
A rib 26 is formed on the peripheral surface of the bearing piece 14 on the side of No. 0 to press-fit with the mounting hole 7a to prevent the case 10 from floating.

[0011]

[Function] A pair of half-cylinders 10 made of a plastic molded product
a to form a case 10, and a bearing piece 14 sandwiched and fixed to one end of both half-cylinders 10a;
Since the pivot shaft 11 is pivotally supported by the bearing portion 18 provided near the other end, the floating gap between the pivot shaft 11 and the case 10 can be sufficiently reduced. By forming the case 10 from a plastic material that is softer than the metal mounting frame 7, the case 10 can be non-movably mounted and fixed to the mounting frame 7 without hindering the mounting, and the door panel can be opened and closed as a whole. The floating movement of the pivot shaft unit, which causes the backlash, can be eliminated.

In a pivot shaft unit having a provisional holding projection 29 provided on the pivot shaft 11 and a keyhole-shaped holding portion 17 provided on the case 10, the entire pivot shaft 11 is slid against the spring 12, After the protrusion 29 is pulled into the holding portion 17, by rotating the pivot shaft 11 in the circumferential direction, the protrusion 29 can be received by the holding portion 17 and the pivot shaft 11 can be held in the retracted state. In this state, when the door panel 1 is erected between the upper and lower guide rails 3 and 4 and the pivot shaft 11 is rotated in the opposite direction to release the holding of the projection 29 by the holding portion 17, the pivot shaft 11 is
And fits in, for example, the upper guide rail 3.
That is, assembly and removal of the door panel 1 can be facilitated.

A pivot shaft unit provided with a screw shaft 35 at one end of the pivot shaft 11 and screwed into a screw hole 38 of the bearing piece 14 changes and adjusts the position of the shaft end by changing the screwing amount of the pivot shaft 11. it can. The spring 12 in this case functions as a locking spring that presses the thread of the screw shaft 35 against the screw hole 38 to prevent the pivot shaft 11 from loosening due to external vibration or the like. Pivot shaft 11
The spring 12 and the pivot shaft 11
Are joined via a cam piece 34 and a projection 37 for receiving a spring. When the pivot shaft 11 is rotated, the projection 3
7 moves over at least one cam portion 40 during one rotation, and the operating resistance changes remarkably before and after the climb, so that the adjustment amount can be accurately known. The more the number of cam portions 40 formed is increased, the finer the amount of adjustment can be known. In order to prevent the cam piece 34 from rotating together with the pivot shaft 11 during this adjustment, the cam piece 34 is held by the case 10 so as to be prevented from rotating.

According to the pivot shaft unit in which the rib 26 for preventing movement is protruded from the peripheral surface of the case 10 on the bearing piece 14 side, the resistance when the case 10 is loaded into the mounting hole 7a of the mounting frame 7 is reduced by the rib. Since only the resistance generated between the mounting hole 26 and the mounting hole 7a can be limited, the mounting can be easily performed.

[0015]

1 to 6 show an embodiment in which a pivot shaft unit is applied to a folding door support for a closet. In FIG. 2, reference numeral 1 denotes a metal door panel, 2 denotes a hinge connecting the door panels 1 to each other, 3 denotes an upper rail,
4 is a lower rail. In the figure, two sets of folding doors are configured by pairing two door panels 1. In each folding door, the top and bottom of each door panel 1 on the side facing the side frame portion of the opening frame,
Each pivot runner 6 is supported by a pivot shaft unit configured as a pivot shaft 5A, 5B so as to be able to swing open and close freely, and the upper and lower sides of each door panel 1 at the center of the opening are supported by a pivot shaft unit configured as a pivot runner 6. Travel guidance is provided by the upper and lower rails 3 and 4.

In FIG. 3, upper and lower pivot runners 6 are provided.
Are the same pivot shaft units, and are different in that the mounting posture with respect to the mounting frame 7 is upside down. Of the upper and lower pivotal support shafts 5A and 5B, the upper pivotal support shaft 5A is basically the same pivot shaft unit as the pivot runner 6, but the roller 13 attached to the end of the pivot shaft 11 in the pivot runner 6 is omitted. There are differences.
The lower pivot 5B is different from the others in that it has a height adjusting mechanism. Reference numeral 8 denotes a bearing that rotatably supports the upper and lower pivot shafts 5A and 5B, and is fixedly fastened to the upper and lower rails 3 and 4. Hereinafter, details of the pivot runner 6 guided by the upper rail 3 will be described.

In FIG. 4, a pivot runner 6 has a vertically long cylindrical case 10, a pivot shaft 11 penetrating the case 10 up and down, and a pivot shaft 11 housed in the case 10 and having the pivot shaft 11 facing upward outside the case. It is composed of a compression coil-shaped spring 12 that is biased to move, a roller 13 that is press-fitted and fixed to the upper end of a pivot shaft 11, a bearing piece 14, a lock ring 15, and the like. A rectangular flange 16 projects from the upper end of the case 10.

In FIG. 5, a case 10 is formed by joining a pair of half-cylinders 10a vertically divided by a plane passing through the center axis thereof. From the end on the flange 16 side to the other end, a holding portion 17 is provided on the inner surface of both half cylinders 10a,
A bearing section 18 and a chamber 19 having a rectangular cross section for housing the spring 12
And the holding portion 20 for the bearing piece 14 are sequentially formed.
On the outer surfaces of the two half-cylinders 10, a concave portion 21 for externally fitting the lock ring 15 is provided adjacent to the protruding base end of the flange 16, and a thin rib 26 for press-fitting is projected on the three peripheral walls facing the holding portion 20. The engagement groove 22 for the bearing piece 14 is formed at the lower end of the rib 26. The recess 21 is formed in a C-shaped cross section, and a wedge wall 31 is provided between circumferential ends for the recess 21. 4 of the dividing surface (also a joining surface) of each half cylinder 10a
A pair of small-diameter pins 23 and holes 24 that fit into each other is formed at each location. The pair of half-cylinder bodies 10a have lower end surfaces on the side of the holding portion 20 connected to each other via a pair of bridging portions 25, and are integrally injection-molded using, for example, a polyamide resin as a material.

The pivot shaft 11 is made of a small-diameter steel rod, and a projection 28 for receiving a spring is formed on a peripheral surface of a majority upper part thereof, and a projection 29 for temporarily holding is provided above the projection 28. The former projection 28 receives one end of the spring 12. The latter protrusion 2
Reference numeral 9 is provided for engaging with the holding portion 17 of the case 10 to hold the pivot shaft 11 in the retracted state against the urging force of the spring 12. The holding portion 17 includes a hole 17a that allows the rotation of the projection 28, and an end wall that closes an opening surface of the hole 17a.
A keyhole-shaped opening 17b that allows the projection 28 to pass through the end wall is formed.

The roller 13 is made of an insulator-shaped plastic molded product, and has a tapered skirt portion 13a which is tapered upward in the lower half. As shown in FIG. 4, the skirt portion 13 a in the use state is received by a guide wall 3 a protruding from the inner surface of the rail 3 (or 4), and defines the advance limit of the pivot shaft 11. When the roller 13 rolls along the guide wall 3a, the pivot shaft 11 rotates together with the roller 13.

The bearing piece 14 is made of a cylindrical plastic molded product, and has a pair of rectangular parallelepiped engaging claws 30 protruding from the upper part of the peripheral surface of the cylindrical body. After the engagement claw 30 is fitted into the engagement groove 22 of one half-cylinder body 10a, the two half-cylinder bodies 10a are joined, whereby the bearing piece 14 is sandwiched and fixed between the two half-cylinder bodies 10a. At the time of actual assembling, after the spring 12 and the bearing piece 14 are sequentially inserted into the pivot shaft 11, the engaging claw 30 of the bearing piece 14 is loaded into the engaging groove 22 while the spring 12 is compressed, and the projection 28 is hooked so as to be inserted into the upper end surface of the chamber 19. In this state, the two half cylinders 10a are joined, and the pin 23 and the hole 24 are engaged.

The lock ring 15 is fitted into the concave portion 21 of the case 10 in order to fix the two half cylinders 10 inseparably while maintaining the above assembled state. The lock ring 15 is formed of a cylindrical sheet metal press-formed product having a C-shaped cross section, and has a pair of opposing peripheral walls provided with retaining claws 32. Retaining claw 32
Is formed by cutting and raising the upper edge side of the peripheral wall outward, and can be elastically deformed in its thickness direction. Lock ring 15
Is inserted into the case 10 from the end on the bridge portion 25 side, and is fitted in the concave portion 21 so that the two half cylinders 10
a of the flange 16 and the protruding end of the retaining claw 32
Are opposed to each other via a small gap.

The pivot runner 6 constructed as described above
As shown in FIG. 4, the case 10 is press-fitted from above into the mounting holes 7a provided in the upper and lower walls of the mounting frame 7.
At this time, the ribs 26 provided on the peripheral surface of the case 10 pass through the upper and lower mounting holes 7a while being partially elastically deformed. for that reason,
Compared to the case where most of the peripheral surface of the case 10 rubs against the mounting hole 7a, the resistance when the case 10 is inserted is reduced, the assembly can be easily performed, and the elasticity of the rib 26 allows the case 10 to be attached to the mounting frame 7. It is possible to reliably prevent rattling. When the case 10 is completely inserted, the locking claw 32 of the lock ring 15 that has passed through the mounting hole 7a
Is displaced outwardly to pinch and hold the peripheral wall of the mounting hole 7a up and down in cooperation with the flange 16. Therefore, the case 10 is fixed so as not to be movable in any of the upper and lower directions. In this state, the wedge wall 31 bites into the upper mounting hole 7a, and the upper portion of the case 10 is fixed to the mounting frame 7 so as not to move freely.

After lowering the pivot shaft 11 against the urging force of the spring 12, the entire shaft is rotated while the projection 29 is inserted into the hole 17a of the holding portion 17, as shown in FIG. , Since the projection 29 is received by the end wall,
By holding the pivot shaft 11 in the retracted state, the door panel 1 can be easily installed or removed. When the entire shaft is rotated again to match the position of the projection 29 with the opening 17b, the pivot shaft 11 is again advanced by the spring 12.

As described above, the pivot runner 6 guided by the lower rail 4 is different from the pivot runner 6 only in that the pivot runner 6 is mounted on the mounting frame 7 while being turned upside down. Further, the upper pivot shaft 5A does not include the roller 13, and the pivot point is such that the upper protruding end of the pivot shaft 11 is rotatably supported only by the bearing 8 and the free length of the spring 12 is different. It is different from runner 6.

The lower pivot 5B is a pivot runner 6
The structure of the pivot shaft 11 and the bearing piece 14 is different from that of the first embodiment, and a cam piece 34 is added as a dedicated component. Further, the spring 12 has a short free length, and is different from the spring 12 for the pivot runner 6 in a mounting position with respect to the case 10. Specifically, as shown in FIG. 6, a screw shaft 35 having a larger diameter than the other is formed in the upper half of the pivot shaft 11,
An operation groove 36 is provided on the upper end surface. Below the screw shaft 35, a pair of projections 37 for projecting a spring is protruded. Bearing piece 1
4 forms a screw hole 38 which engages with the screw shaft 35 on the inner surface of the cylinder. The bearing piece 14 having the screw hole 38 can be formed by additionally forming the screw hole 38 in the bearing piece 14 used in the pivot runner 6 by forming the screw shaft 35 to have a larger diameter than the other.

The cam piece 34 is made of a plastic molded product in the shape of a rectangular parallelepiped block. Holes 39 for loosely fitting with the shaft of the pivot shaft 11 are vertically provided in the center of the block, and V faces each side of the upper surface of the block. The U-shaped cam portion 40 is formed as a recess. The cam piece 34 and the spring 12 are assembled to the pivot shaft 11 in that order from the lower end of the round shaft portion, and the other end of the spring 12 is fixed to the bearing of the It is received by the end wall on the part 18 side. As a result, the cam piece 34 is always in contact with the projection 37, and the projection 37 falls into engagement with the pair of radially opposed cam portions 40. The other parts are the same as those of the above-mentioned pivot runner 6, and the description is omitted.

The lower pivot 5B mounted on the mounting frame 7
The screw shaft 35 protrudes above the case 10, and the lower end of the pivot shaft 11 is rotatably supported by a bearing 8 fixed to the rail 4 so as to be rotatable only. In this state, when the entire pivot shaft 11 is screwed by applying a tool such as a screwdriver to the operation groove 36, the door panel 1 is lifted upward. Conversely, when the entire pivot shaft 11 is loosened, the door panel 1 Descend. When the pivot shaft 11 is rotated, the protrusion 37 also rotates. Therefore, the projection 37 of the cam piece 34 is
The spring 12 is slid while compressing the spring 12 while riding on the piece end face. When the pivot shaft 11 is further rotated, the cam portion 40 adjacent to the cam portion 40 snaps into the projection 37 and slides back.

Therefore, the operation resistance increases and decreases during the rotation of the pivot shaft 11 by a quarter, and the position can be maintained. This means that one-fourth of the screw pitch of the screw shaft 35 can be finely adjusted in units of adjustment, and the user can count the number of clicks and the number of impacts when the cam piece 34 returns and slides. The vertical height of the pivot shaft 11 can be finely adjusted accurately.

The pivot shaft unit having the above-mentioned height adjusting mechanism can be used as a pivot runner as shown in FIG. In this case, the pivot shaft 1
A horizontal roller shaft 42 is mounted on the lower end shaft portion of the first roller 1, and the roller shaft 42 supports a pair of rollers 43. The rest is the same as the pivot shaft unit described with reference to FIG.

In addition to the above, the case 10 can be formed in a round cylindrical shape, and the division surface of the rectangular cylindrical case 10 can be provided diagonally. The bridging portion 25 connecting the two half cylinders 10a can be provided between the end faces of the flange 16 or between the peripheral side surfaces of the flange 16. At least one cam portion 40 is sufficient, and in that case, the protrusion 37 is provided so as to protrude only at one position on the shaft peripheral surface. The cam portion 40 does not need to be formed as a recess, but can be formed as a protrusion projecting from the end face of the cam piece 34. Each of the protrusions 28, 29, and 37 may be formed by driving a pin into the pivot shaft 11. The pivot shaft unit according to the present invention can be used as a support unit for a runner for a sliding door.

[0032]

According to the present invention, a case 10 is formed by joining a pair of plastic molded half-cylinders 10a, and a bearing piece 14 sandwiched and fixed between the two half-cylinders 10a; The pivot shaft 11 is supported by the bearing 18 provided between the joining surfaces. Moreover, the case 10 is formed of a plastic molded product, and the fitting dimension of the mounting frame 7 with respect to the mounting hole 7a can be set more strictly, so that the pivot shaft unit can be surely shaken with respect to the mounting frame 7 in the mounted state. Can be prevented. As a result, a pivot shaft unit that can open and close the door panel lightly without rattling during long-term use can be obtained, and can be applied to a large and heavy door panel without any problem.

By rearranging some of the components,
Since the present invention can be applied to both the pivot runner and the pivot, the manufacturing cost can be reduced as much as the parts can be shared.
In a pivot shaft unit with a height adjustment mechanism,
A cam piece 34 is provided between the spring receiving projection 37 of the pivot shaft 11 and the spring 12, and each time the pivot shaft 11 is rotated by a predetermined angle, the cam piece 34 collides with the projection 37 and the adjustment amount is clicked. Because it can be grasped as a sound or impact operation, the height adjustment of the pivot shaft 11 can be surely performed, and the screw pitch of the screw shaft 35 can be finely adjusted as a basic unit, making the height adjustment easier than conventional products. I can do it.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a pivot shaft unit.

FIG. 2 is a perspective view of a folding door showing an example of use of a pivot shaft unit.

FIG. 3 is an explanatory view showing a schematic arrangement in a case where the pivot runner and a pivot shaft are used.

FIG. 4 is a side view showing a mounted state of a pivot runner.

FIG. 5 is an exploded perspective view of a pivot runner.

FIG. 6 is a vertical sectional view of a pivot shaft.

FIG. 7 is a front view showing another example of use of the pivot shaft unit.

FIG. 8 is a vertical sectional side view of a conventional shaft unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Case 10a Half cylinder 11 Pivot shaft 12 Spring 14 Bearing piece 15 Lock ring 16 Flange 17 Holding part 18 Bearing part 25 Bridge part 29 Projection 32 Retaining claw

Claims (4)

[Claims] 1. A vertically long cylindrical case 10 having a flange 16 protruding at one end, a pivot shaft 11 penetrating the case 10 up and down, and a pivot shaft 11 housed in the case 10 and facing the outside of the case. A pivot shaft unit including a spring for moving and biasing, wherein the case is divided by a plane passing through a center axis thereof, and is formed of a pair of halves integrally formed of plastic via a bridging portion. A bearing piece 14 arranged at one end of the case 10 is sandwiched and fixed between a pair of half-cylinders 10a, and ends of the two half-cylinders 10a on the flange 16 side. The bearing portion 1 that supports the pivot shaft 11 in cooperation with the bearing piece 14
A lock ring 15 for joining and holding the semi-cylindrical body 10a inseparably is fitted to the end of the case 10 on the flange 16 side, and the peripheral surface of the lock ring 15 is elastically deformed. A pivot shaft unit for a door panel provided with a possible retaining claw 32. 2. A pivot shaft 11 is slidably supported by a bearing piece 14 and a bearing portion 18 so as to be vertically slidable, and is urged by a spring 12 to move from a flange 16 side end to the outside of the case. A projection 29 for provisional holding is formed near the forward end of the pivot shaft 11, and a keyhole-shaped holding portion 17 for engaging and catching the projection 29 is provided at an end of the case 10 on the flange 16 side. Item 1
A pivot unit for the door panel as described. 3. A screw shaft 35 formed at one end of the pivot shaft 11 is screwed into a screw hole 38 provided in the bearing piece 14, and a spring bearing is provided on the peripheral surface of the pivot shaft 11 facing the inside of the case 10. The cam piece 34 accommodated in the case 10 while being loosely fitted to the pivot shaft 11 is non-rotatably held and held by the case 10. Spring 12 arranged between
The cam piece (34) is urged to move toward the projection (37), and one or more cam portions (40) engaging with the projection (37) are formed on the contact surface of the cam piece (34) with the projection (37). Pivot shaft unit for door panels. 4. A case 10 is inserted and mounted in mounting holes 7a passing through upper and lower walls of a mounting frame 7 of the door panel 1.
4. A door panel according to claim 1, wherein a rib is formed on a peripheral surface of the case on the bearing piece side to protrude from the peripheral surface of the case to engage with the mounting hole to prevent play of the case. Pivot axis unit.