JPH07229513A - Swing shaft of support device - Google Patents

Abstract

PURPOSE:To obtain a swing shaft which is utilized for a support device for supporting a small-sized liquid crystal television or camera in an optional state, without deteriorating strength and inexpensively. CONSTITUTION:A swing shaft is composed of a hard synthetic resin shaft main body 38, a soft synthetic resin (such as rubber) semi-spherical body 45 which is fixed to a semi-spherical part 40 on a lower end of the shaft main body and composes a spherical part of the swing shaft together with the semi- spherical part 40, a metal screw 50 mounted on a screw base 43 on an upper end of the shaft main body, and a hard synthetic resin cylindrical body 53 which is fitted on the screw base from upward, makes a screw part 52 of the screw project upward, and regulates rotation and escape of the screw. The swing shaft is oscillatably supported in the state that the spherical part is housed in a ball housing portion 34 of a first operation body 31. When a support shaft which is screwed with the ball housing part from a lower portion is abutted against the semi-spherical body 45, swing operation is regulated. A second operation body 60 is screwed with a screw groove 54 on an outer periphery of the cylindrical body 53.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swinging device used for supporting a device such as a small liquid crystal television or a video camera on a supporting member provided in a room such as an automobile so that the posture of the device can be changed. Regarding the axis.

[0002]

2. Description of the Related Art For example, a small-sized liquid crystal television has a screw hole of a predetermined diameter provided on the bottom surface thereof, like a camera or the like, and by tightening a screw such as a stand into the screw hole, in addition to portable use, It is configured for fixed use.

When such a device is fixedly used in a room such as an automobile, the posture of the device needs to be variable. Therefore, the supporting device as shown in FIGS. 15 and 16 has been conventionally used.

The support device 10 is attached to the tip of a support shaft 1 which is erected upright in the interior of an automobile, and a liquid crystal television 5 is installed.
To support the swing shaft 11 in any direction.
And a first operating body 16 and a second operating body 20.

A spherical portion 1 is provided at the lower end of the shaft portion 12 of the swing shaft 11.
3 is formed, and at the upper end of the shaft portion 12, a disc-shaped collar portion 14 is formed.
Is formed, and at the center of the upper surface of the collar portion 14, a screw portion 15 that is screwed into the screw hole 6 on the bottom surface of the liquid crystal television 5 is provided in a protruding manner.

Since the swing shaft 11 is screwed into the metal screw hole 6 provided on the bottom surface of the liquid crystal television 5, it is integrally formed of metal.

The swing shaft 11 is supported by the first operating body 16. The first operating body 16 is formed in a substantially tubular shape, and a screw hole 17 is formed in the lower portion of the inner peripheral wall of the first operating body 16 so as to be screwed into the screw groove 2 on the outer periphery of the tip of the support shaft 1 and is formed upward. 18 is provided. A substantially hemispherical ball accommodating portion 19 for accommodating the spherical portion 13 of the swing shaft 11 is provided above the screw hole 18 so as to be continuous with the screw hole 18.

The upper surface of the ball accommodating portion 19 has a diameter larger than that of the flange portion 14 of the swing shaft 11 and smaller than that of the spherical portion 13. The rocking shaft 11 has its spherical portion 13 housed in the ball housing portion 19 so that the rocking shaft 11 can be rocked within a predetermined range in a state where the shaft portion 12 and its upper end side are projected above the first operating body 16. Supported.

Since the ball accommodating portion 19 is continuous with the screw hole 18, if the first operating body 16 is rotated in a predetermined direction while the tip of the support shaft 1 is in contact with the screw hole 18, the figure is obtained. As shown in FIG. 16, the tip of the support shaft 1 enters into the screw hole 18 and the spherical portion 1 of the swing shaft 11 in the ball accommodating portion 19 is reached.
It contacts the outer circumference of the lower part of 3. By this operation, the swing shaft 1
1 is fixed to the first operating body 16.

The second rotary operation body 20 is formed in a disk shape having a diameter larger than that of the flange portion 14 of the swing shaft 11, and at the center thereof, a screw hole 21 screwed into the screw portion 15 of the swing shaft 21. Is provided. Therefore, when the second operating body 20 receives a rotational operation while the swing shaft 11 is fixed to the first operating body 16, the second operating body 20 moves along the axial direction of the screw portion 15. Move up and down. The second operating body 20 is made of metal because it is screwed onto the swing shaft 11 made of metal.

The second operating body 20 is for strongly connecting the rocking shaft 11 and the liquid crystal television 5 to the position where the second operating body 20 comes into contact with the flange portion 14 in advance. In the lowered state, the screw portion 15 of the swing shaft 11 is screwed into the screw hole 6 of the liquid crystal television 5, and then the second operating body 20 is rotated in the ascending direction to set the bottom surface of the liquid crystal television 5. By strongly abutting against, the rocking shaft 11 and the liquid crystal television 5 can be strongly fixed.

When the orientation of the screen of the liquid crystal television 5 is changed from this state, the first operating body 16 is rotated in the direction of pulling it out of the support shaft 1 so that the support shaft 1 and the swing shaft 11 are spherical. Loosen the contact with the part 13. As a result, the swing shaft 11 can swing about the spherical portion 13, and within the swing range, the liquid crystal television 5 is oriented in any direction,
By rotating the first operating body 16 in the opposite direction and strongly contacting the support shaft 1 and the spherical portion 13 of the swing shaft 11, the liquid crystal television 5 can be supported in that orientation. .

[0013]

However, the conventional rocking shaft used in the above supporting device has a relatively complicated shape having a spherical portion at the lower end and a screw portion at the upper end. So, when integrally forming this with metal,
There was a problem that one had to rely on a costly mold. Further, the second operating body screwed to the threaded portion of the metal swing shaft is also limited to the metal, and the cost of the supporting apparatus as a whole becomes very high. It was

For this reason, it is possible to integrally form the entire swing shaft with synthetic resin, but if the screw portion of the synthetic resin is strongly screwed into the metal screw hole of the device, the screw portion may be cut off, There was a problem that the strength was weakened, such as the screw threads being crushed.

Further, when the spherical portion is made of metal or hard synthetic resin, the frictional force between the spherical portion and the support shaft abutting the spherical portion is small, and the swing shaft may be firmly fixed depending on the weight of the device and its posture. In some cases it could not be fixed.

An object of the present invention is to solve the above problems, to realize a low cost without lowering the strength, and to provide a swing shaft of a supporting device in which swinging is easily regulated.

[0017]

In order to solve the above-mentioned problems, the swinging shaft of the supporting device of the first invention supports a device having a screw hole of a predetermined diameter on one surface so that its posture can be changed. Used in a supporting device for, a shaft portion, a spherical portion provided on one end side of the shaft portion, and a screw portion provided on the other end side of the shaft portion and screwed into a screw hole of the device. And having the shaft portion and the screw portion projecting outward, is swingably supported around the spherical portion, and swinging is restricted by receiving a predetermined member abutting the spherical portion. In the swing shaft of the supporting device, the shaft portion and the spherical portion are formed of synthetic resin,
The screw portion formed of metal is fixed to the other end side of the shaft portion.

The swing shaft of the supporting device of the second invention is
A synthetic resin cylindrical portion having a diameter larger than that of the screw portion and having a thread groove on the outer periphery is formed on the other end side of the shaft portion.

The swing shaft of the supporting device of the third invention is
It is used for a supporting device for supporting a device having a screw hole of a predetermined diameter on one surface so that its posture can be changed, and a shaft portion, a spherical portion provided on one end side of the shaft portion, and the shaft portion. Has a screw portion that is provided on the other end side of the device and is screwed into the screw hole of the device, and is swingably supported around the spherical portion with the shaft portion and the screw portion protruding outward. In the swing shaft of the supporting device in which the swing is restricted by the contact of the predetermined member with the spherical portion, the outer peripheral portion of the outer periphery of the spherical portion that is in contact with the predetermined member is made of soft synthetic resin. Has been done.

[0020]

As described above, the swing shaft of the supporting device of the first invention is formed at low cost because only the screw portion screwed into the screw hole of the device is made of metal and the other portions are made of synthetic resin. It is also possible to secure the strength against the screw holes of the equipment.

Further, in the swing shaft of the supporting device of the second invention,
By providing a thread groove on the outer periphery of the cylindrical portion formed of synthetic resin on the other end side of the shaft portion, instead of screwing the conventional metal second operating body to the metal screw portion, an inexpensive synthetic The second operating body made of resin can be screwed to the cylindrical portion for use.

Further, in the swing shaft of the supporting device according to the third aspect of the invention, the outer peripheral portion of the outer periphery of the spherical portion that abuts the predetermined member is formed of a soft synthetic resin such as rubber, so that the predetermined member is fixed. On the other hand, a strong frictional force can be obtained, and the swing shaft can be securely fixed.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 6 show an external appearance and an internal structure of a supporting device 30 using a swing shaft according to an embodiment. This supporting device 30 is attached to the supporting shaft 1 which is erected in a room such as an automobile, like the above-mentioned supporting device, and the liquid crystal television 5
To support the posture of the robot so that the posture can be changed.

The first operating body 31 of the supporting device 30 has an outer cylindrical portion 32 whose upper portion is formed into a truncated hemispherical shape and whose lower portion is formed into a cylindrical shape, and an inner cylindrical portion arranged at the center of the outer cylindrical portion 32. Tube 33
And have.

A thick wall portion 32a and a thin wall portion 32b are formed on the outer periphery of the lower portion of the outer tubular portion 32 so as to be alternately arranged in the circumferential direction so that the first operating body 31 can be easily rotated. . The upper portion of the inner tubular portion 33 is opened in an inverted conical shape so that the diameter becomes smaller as it goes downward, and is continuous with the upper end of the outer tubular portion 32 via an inclined wall 33a forming the opening. .

A ball accommodating portion 34 having a hemispherical upper portion is provided substantially in the center of the inner cylindrical portion 33 for accommodating a spherical portion of a swing shaft 37 described later. The upper portion of the ball accommodating portion 34 is opened to have a diameter smaller than the diameter of the ball accommodating portion, and the inner cylindrical portion 3
3 is continuous with the upper opening surface.

On the inner circumference of the inner cylindrical portion 33, a screw groove 35 that is screwed into the screw groove 2 on the outer periphery of the tip of the support shaft 1 is formed from the lower end to the ball accommodating portion 34, and is supported by a rotating operation. The shaft 1 can be advanced to the ball storage portion 34.

Further, the inner wall of the outer tubular portion 32 and the outer wall of the inner tubular portion 33 are connected by a plurality of reinforcing plates 36.

The first operating body 31 is integrally molded of a hard synthetic resin such as ABS resin. A swing shaft 37 is inserted from the lower end side of the inner cylinder portion 33 of the first operating body 31.

The swing shaft 37 includes a shaft body 38 and a hemisphere 45.
And a screw body 50 and a cylindrical body 53. The shaft body 38 of the swing shaft 37 is integrally molded of hard synthetic resin like the first operating body 31, and its shaft portion 39 is formed.
Is formed in a columnar shape whose diameter increases toward the upper end. A hemisphere 40 having a spherical upper surface and a flat lower surface is provided at the lower end of the shaft 39, and a locking projection 41 is provided at the center of the lower surface of the hemisphere 40. The locking protrusion 41 is a columnar shaft 41 a protruding downward from the lower surface of the hemispherical portion 40.
And a locking disc 41b which is provided at the lower end of the shaft 41a and has a diameter larger than that of the shaft 41a and whose lower surface is formed into a spherical surface.

A circular collar 4 is provided on the upper end of the shaft body 38.
2 is formed, and a screw base 43 is provided on the upper surface of the flange 42. An outer circumference of the screw base 43 is formed in an oval shape, a part of which matches the outer circumference of the collar portion 42, and an upper surface thereof is formed flat. A locking groove 44, which is recessed inwardly in a U-shape, is formed at substantially middle steps on both side surfaces of the screw base 43 which are parallel to each other.
44 are formed along the length direction.

On the lower surface of the hemispherical portion 40 of the shaft main body 38, a hemispherical body 45 which overlaps with the hemispherical portion 40 and forms a spherical portion 37a of the swing shaft 37 is attached. Hemisphere 45
Is integrally formed of a soft synthetic resin such as rubber, and has a large internal diameter formed at the center of its circular upper surface 45a so as to engage with the locking projection 41 of the shaft body 38. A stop hole 46 is provided. The hemisphere 45 elastically deforms and receives the locking projection 41 of the shaft main body 38 in the locking hole 46, and forms the spherical portion 37a together with the hemispherical part 40 of the shaft main body. Since the locking holes 46 of the hemisphere 45 engage with the locking projections 41 in a mutually non-reversible manner, once fixed to the shaft body 38, they do not fall off with normal force.

On the other hand, a screw body 50 is arranged on the screw base 43 of the shaft body. The screw body 50 is a substrate 51 formed in an oval shape so as to overlap with the upper surface of the screw base 43.
And a screw portion 52 which is provided upright in the center of the substrate 51 and is screwed into the screw hole 6 of the liquid crystal television 5, and is integrally formed of metal.

A cylindrical body 53 is fitted on the screw base 43 from above so as to be concentric with the screw body 50 and the shaft body 38. The cylindrical body 53 forms the cylindrical portion 37b of the swing shaft 37, and is integrally molded with a hard synthetic resin into a cylindrical shape having a diameter larger than that of the screw portion 52 of the screw body 50. , Thread grooves 54 are provided.
In the center of the lower surface of the cylindrical body 53, a fitting hole 55 having an oval outer shape that fits into the screw base 43 of the shaft body 38 is provided.
The center of the upper surface of 3 is continuous with this fitting hole 55,
Insertion hole 5 for inserting the screw part 52 of 0 and projecting upward
6 is provided.

Since the height of the fitting hole 55 is set to be approximately equal to the height of the screw base 43 plus the thickness of the substrate 51 of the screw body 50, the screw body 50 is mounted on the screw base 43. When the cylindrical body 53 is fitted into the screw base 43 in the mounted state, the substrate 51 of the screw body 50 is sandwiched between the upper surface of the screw base 43 and the upper surface of the fitting hole 55 of the cylindrical body 53, and the screw portion 52 is formed. Is through hole 5
6 is projected.

Since the screw base 43, the substrate 51 and the fitting hole 55 have substantially the same oval outer shape, the screw body 5
0 is fixed in a state where rotation is restricted with respect to the swing shaft 37.

Side walls 5 of the fitting hole 55 facing each other in parallel.
5a and 55b, locking ribs 57 and 57 are engaged with the locking grooves 44 and 44 formed on both side surfaces of the screw base 43 in a non-reverse manner.
Are provided so that the locking ribs 57, 57 engage with the locking grooves 44, 44 of the screw base 43, and the movement of the cylindrical body 53 with respect to the shaft body 38 in the pulling direction is restricted.

It should be noted that the groove 5 is formed on the outer side of the side walls 55a and 55b of the fitting hole 55 of the cylindrical body 53 at a predetermined depth from the upper surface side.
8, 58 are provided. When the locking ribs 57, 57 are pushed to the side surface of the screw base 43 when the cylindrical body 53 is fitted to the screw base 43, the side walls 55a, 58a of the grooves 58, 58 are provided.
55b is slightly deformed outward so that the locking ribs 57, 57
This is to prevent the collapse of the.

The outer diameter of the cylindrical body 53 has a ball accommodating portion 34 of the first operating body 31 so as to prevent the thread groove from being deformed by the screwing operation of the second operating body 60 described later. Is formed larger than the diameter of the upper opening surface of the. That is, when the cylindrical body 53 is fixed to the shaft body 38 in advance, the swing shaft 37 cannot be supported by the first operating body 31. Therefore, the swing shaft 37 is assembled according to the following procedure.

That is, as shown in FIG. 6, with the hemisphere 45 first attached to the shaft main body 38, the screw mount 43
With the side up, the lower surface of the inner tubular portion 33 of the first operating body 31 is inserted. Then, the shaft portion 39 is connected to the first operating body 31.
Of the screw body 5 on the screw base 43 while protruding from the upper surface of the
0 (or the screw body 50 is inserted into the fitting hole 55 of the cylindrical body 53 in advance), and the cylindrical body 53 is fitted to the screw base 43.

In this way, the swing shaft 37 supported by the first operating body 31 is centered on the spherical portion 37a,
Inclined wall 33a forming the upper opening surface of the first operating body 31
It can swing freely within the range regulated by. In this embodiment, the support shaft 1 screwed to the first operating body 31 from the lower surface side also serves as a predetermined member for restricting the swing of the swing shaft 37.

The thread groove 54 on the outer periphery of the cylindrical body 53 has a second
The operation body 60 is screwed. The second operating body 60 is
A ring-shaped upper surface 60a has a cylindrical outer cylinder portion 61 whose upper end is continuous with the outer edge, and an inner edge upper end of the upper surface 60a is continuous with an inner cylinder portion 62 provided at the center of the outer cylinder portion 61. Like the operation body 31 of No. 1, it is integrally molded of hard synthetic resin.

On the outer circumference of the outer cylinder portion 61, thick-walled portions 61a and thin-walled portions 61b are formed alternately along the circumferential direction to facilitate the rotating operation. A thread groove 63 that is screwed onto the outer circumference of the cylindrical body 53 is formed on the inner circumference of the inner cylinder portion 62. The inner wall of the outer tubular portion 61 and the outer wall of the inner tubular portion 62 are connected by a plurality of reinforcing plates 65.

The second operating body 60 moves in the axial direction of the screw portion 52 of the swing shaft 37 in response to the rotation operation.

Next, the supporting device 30 having the above structure is used.
A method of supporting the liquid crystal television 5 on the tip of the support shaft 1 will be described.

First, as shown in FIG. 7, the first operating body 3
1, the support shaft 1 is screwed into the inner cylindrical portion 33, and the tip of the support shaft 1 is at the lower surface of the spherical portion 37a of the swing shaft 37 (rubber hemisphere as shown in FIG. 8). The upper surface of the spherical portion 37a is tightened to a position where the upper surface of the spherical portion 37a comes into contact with the upper wall of the ball accommodating portion 34 by abutting on the outer periphery of the body 45).

By this operation, the rubber surface of the spherical portion of the swing shaft 37 is strongly pushed by the tip of the support shaft 1 and slightly deformed so as to come into surface contact with the tip face of the support shaft 1 and the support shaft 1. Causes a strong frictional force between. Due to this frictional force, the swing shaft 37 is fixed to the first operating body 31 in a state in which swinging and rotation about the shaft portion are also restricted.

Next, as shown in FIG. 8, the second operating body 60 is
With the screw hole 6 of the liquid crystal television 5 being slightly lowered from the cylindrical body 53, the screw portion 52 of the supporting device 30 is formed as shown in FIG.
The liquid crystal television 5 side is rotated and screwed until its bottom surface contacts the upper surface of the cylindrical body 53. This operation is a screw operation of metal to each other, so even if you perform it with a strong force,
No screw breakage or thread groove deformation will occur.

Next, as shown in FIG. 10, the second operating body 60 is rotationally operated so as to move toward the liquid crystal television, and the upper surface thereof is strongly abutted against the bottom surface of the liquid crystal television 5, so that the swing shaft 37 and The liquid crystal television 5 is firmly fixed. Even if the second operation body 60 is strongly tightened to the liquid crystal television 5 side by this operation, the outer circumference of the cylindrical body 53 has a diameter significantly larger than the screw portion 52, and the second operation is performed on the outer circumference. Since the body 60 is screwed, the force acting on the screwed portion has a diameter of the screw portion 5.
It is very small compared to the case of a small diameter such as the diameter of 2. Therefore, even if the synthetic resins are used together, the thread groove is not deformed.

By this operation, the support shaft 1 and the liquid crystal television 5 are fixed, but when the attitude of the liquid crystal television 5 (direction and inclination of the display surface) is set to a desired state, the above state is set. Then, the first operating body 31 is once loosened, the attitude of the liquid crystal television 5 is determined as shown in FIG. 11, and then the first operating body is tightened. Since the swing range of the swing shaft 37 is limited to a range of less than 90 degrees from the upright state, even if the first operating body is tightened in the swing state up to the maximum angle, the support shaft is not supported. As shown in FIG. 12, the tip of No. 1 abuts on the outer circumference of the hemisphere 45 of the swing shaft 37. Therefore, by this operation, the liquid crystal television 5 is stably fixed to the support shaft 1 in the set posture due to the strong frictional force between the rubber surface and the support shaft 1, and the position shift is prevented.

In this embodiment, the second operating body 60 is screwed to the cylindrical body 53 of the swing shaft 37, but a metallic operating body may be screwed to the screw portion 52 for use. it can.

As described above, in the swing shaft of this embodiment, only the screw portion is made of metal, the other shaft portions, the spherical portion and the cylindrical portion are made of synthetic resin, and the second portion made of synthetic resin is used. Since the operating body can be used, not only the swinging shaft alone but also the supporting device as a whole can be made much cheaper than the conventional one.

[0053]

[Other Embodiments] In the above embodiment, the metal screw body is sandwiched and fixed between the upper surface of the screw base of the shaft body of the swing shaft and the cylindrical body fitted to the screw base. However, the method of fixing the screw body is not limited to the above-described embodiment, and for example, as shown in FIG. 13, a screw body 50 ′ having screw holes 70, 70 provided at both ends of the substrate 51 may be used. Swing axis 3
7 is used, or a metal screw body 71 composed of a substrate 72 and a screw portion 73 is attached to the side of the screw base 43 'of the swing shaft 37 from the side as shown in FIG. A groove 75 for receiving is provided, and a method in which a cylindrical body (not shown) is fitted to the screw base 43 'with the screw body 71 inserted in the groove 75 (reference numeral 76 is a locking groove), or the shaft body is made of metal. Various fixing methods can be used, such as a method of fixing a threaded body made by insert molding or a method of fixing with an adhesive or the like.

Further, in the above-mentioned embodiment, the shaft body 38, the hemisphere 45 and the cylindrical body 53 made of synthetic resin are separately formed, and these are engaged with the screw body 50 made of metal to make one swing. Although the shaft 37 is configured, this does not limit the present invention, and when the various fixing methods of the screw body described above are used, the shaft body 38 and the cylindrical body 53 are integrally formed. You can also In this case, the diameter of the shaft portion and the cylindrical portion may be smaller than the diameter of the spherical portion so that the shaft portion and the cylindrical portion of the swing shaft can pass through the ball accommodating portion.
If a strong frictional force is not required between the predetermined member (support shaft 1) and the swing shaft, if the spherical portion, the shaft portion and the cylindrical portion are formed by integral molding of synthetic resin,
The cost can be further reduced and the assembling work becomes easy.

Further, without providing a cylindrical portion at one end of the swing shaft,
Similar to the conventional device, the second operation body made of metal can be screwed into the screw portion of the swing shaft.

In the above embodiment, the lower half of the outer periphery of the spherical portion is made of soft synthetic resin such as rubber, but the range of this soft synthetic resin is predetermined within the entire swing range. It may be determined so that it can come into contact with a member, and it may be expanded or narrowed according to the size of the swing range of the swing shaft, or may be determined according to the thickness of a predetermined member (the support shaft in the above embodiment) or the like. Good.

Although the swing shaft used for the supporting device for supporting the liquid crystal television 5 has been described in the above embodiments, the swing shaft of the present invention is also applicable for the supporting device for supporting equipment such as a camera and a video camera. Can be used. Further, in the above-described embodiment, the case where the predetermined member that abuts the spherical portion of the swing shaft is the support shaft 1 for supporting the device has been described, but a member different from the member for supporting the device (for example, another screw). body)
The swing shaft of the present application can be similarly applied to a supporting device having a mechanism for abutting against the spherical portion.

[0058]

As described above, in the swing shaft of the supporting device of the present invention, only the screw portion is made of metal, and the other shaft portion and the spherical portion are made of synthetic resin. It can be made much cheaper than an integrally formed swing shaft, and the strength of the device with respect to a screw hole is not reduced.

Further, in the swing shaft having the cylindrical portion made of synthetic resin having a larger diameter than the screw portion and having a thread groove on the outer periphery on the other end side of the shaft portion, in addition to the conventional metallic operating body, Since the operating body made of synthetic resin can be used, the cost of the entire supporting device can be reduced. Further, since the outer diameter of the cylindrical portion is larger than the screw portion, even if the resin is screwed together, the thread groove is not deformed and the strength is not reduced.

Further, in the swing shaft in which the outer peripheral portion of the spherical portion of the swing shaft with which the predetermined member abuts is formed of a soft synthetic resin such as rubber, a large frictional force is generated between the predetermined member and the spherical portion. Therefore, the swing axis does not shift due to the influence of the weight of the device and the supporting posture, and stable support can be performed for a long period of time.

[Brief description of drawings]

FIG. 1 is a perspective view of a supporting device using a swing shaft according to an embodiment of the present invention.

FIG. 2 is a plan view of the supporting device of FIG.

FIG. 3 is a bottom view of the supporting device of FIG.

FIG. 4 is a sectional view taken along the line AA of FIG.

5 is a sectional view taken along line BB of FIG.

FIG. 6 is an exploded perspective view of the entire supporting device.

FIG. 7 is a side view for explaining how to use the supporting device of FIG.

FIG. 8 is a cross-sectional view showing a state where the support shaft and the swing shaft are in contact with each other.

9 is a side view for explaining how to use the supporting device of FIG.

FIG. 10 is a side view for explaining how to use the supporting device of FIG.

FIG. 11 is a side view for explaining how to use the supporting device of FIG.

FIG. 12 is a schematic side view showing a contact state between a swing shaft at a maximum swing position and a support shaft.

FIG. 13 is a perspective view showing a main part of another embodiment of the present invention.

FIG. 14 is a perspective view showing a main part of another embodiment of the present invention.

FIG. 15 is an exploded perspective view showing the configuration of a conventional device.

FIG. 16 is a sectional view showing a usage state of a conventional device.

[Explanation of symbols]

 1 Support Shaft 5 Liquid Crystal Television 6 Screw Hole 30 Support Device 31 First Operating Body 37 Swing Shaft 38 Shaft Main Body 39 Shaft Part 40 Hemisphere 41 Locking Protrusion 42 Collar 43 Screw Base 44 Locking Rib 45 Hemisphere 46 Stop hole 50 Screw body 51 Substrate 52 Screw part 53 Cylindrical body 54 Screw groove 60 Second operating body

Claims (3)

[Claims] 1. A shaft part and a spherical part provided at one end of the shaft part, which is used for a supporting device for supporting a device having a screw hole having a predetermined diameter on one surface so that the posture of the device can be changed. And a screw portion that is provided on the other end side of the shaft portion and that is screwed into a screw hole of the device, centering around the spherical portion with the shaft portion and the screw portion protruding outward. In a swing shaft of a supporting device which is swingably supported and whose swing is restricted by contact of a predetermined member with respect to the spherical portion, the shaft portion and the spherical portion are made of synthetic resin and made of metal. A swing shaft of a supporting device, wherein the screw portion is fixed to the other end side of the shaft portion. 2. A support device according to claim 1, wherein a cylindrical portion made of synthetic resin having a diameter larger than that of the screw portion and having a thread groove on the outer periphery is formed on the other end side of the shaft portion. Swing axis. 3. A shaft portion and a spherical portion provided on one end side of the shaft portion, which is used for a supporting device for supporting a device having a screw hole having a predetermined diameter on one surface so that the posture of the device can be changed. And a screw portion that is provided on the other end side of the shaft portion and that is screwed into a screw hole of the device, centering around the spherical portion with the shaft portion and the screw portion protruding outward. In a swing shaft of a supporting device which is swingably supported and whose swing is restricted by contact of a predetermined member with respect to the spherical portion, an outer peripheral portion of the outer periphery of the spherical portion that is in contact with the predetermined member is A swing shaft of a support device, which is formed of a soft synthetic resin.