KR0149118B1 - Swing shaft of support device - Google Patents

Abstract

An object of the present invention is to obtain a rocking shaft used for a support device for supporting a small liquid crystal television, a camera, etc. while maintaining an arbitrary posture at a low cost without weakening strength, and the rocking shaft is hard. A synthetic resin shaft main body 38, a soft synthetic resin hemisphere 45 fixed to the hemisphere at the lower end of the shaft main body and a rubber forming a spherical portion of the swing shaft together with the hemisphere part, and a screw at the upper end of the shaft main body. The metal screw body 50 mounted on the table and the hard synthetic cylinder made of a hard plastic resin protruding the screw part 52 of the screw body upwards by attaching it to the screw bar from the upper side and restricting the rotation and the detachment of the screw body. (53); composed of, the ball receiving portion 34 of the first operating body 31 is supported so that the swing freely in the state in which the spherical portion is received, the screw body through the lower side toward the ball receiving portion The support shaft is swung by the abutment on the hemisphere (45) which is regulated, and the screw groove formed in the outer circumference of the cylindrical body (53) has a second operating body 60 is screwed.

Description

Swing shaft of support device

1 is a perspective view of a support device using a rocking shaft according to an embodiment of the present invention.

2 is a plan view of the support device shown in FIG.

3 is a bottom view of the support device shown in FIG.

4 is a cross-sectional view taken along the line A-A of FIG.

5 is a cross-sectional view taken along the line B-B in FIG.

6 is an exploded perspective view of the entire support device.

7 is a side view for explaining a method of using the support device shown in 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 support device shown in FIG.

10 is a side view for explaining a method of using the support device shown in FIG.

11 is a side view for explaining a method of using the support device shown in FIG.

12 is a schematic side view showing a state in which the swing shaft and the support shaft of the maximum swing position are in contact with each other.

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

14 is a perspective view showing the main parts of still another embodiment according to the present invention.

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

16 is a cross-sectional view showing a state of use of the conventional apparatus.

* Explanation of symbols for main parts of the drawings

1: support shaft 5: liquid crystal television

6 screw hole 30 support device

31: first operating body 37: rocking shaft

38: shaft body 39: shaft portion

40: hemispherical part 41: locking projection

42: jaw portion 43: screw rod

44: locking groove 45: hemisphere

46: engaging hole 50: screw body

51: substrate 52: screw portion

53: cylinder 54: screw groove

57: jammed rib 60: second working body

The present invention relates to a rocking shaft for use in a support device for supporting a device such as a small liquid crystal television or a video camera so as to change the posture to a support member installed in an interior of a vehicle.

Conventionally, for example, a small liquid crystal television has a screw hole having a predetermined diameter formed on its bottom surface like a camera or the like, and is configured to be fixed for use besides portable use by tightening a screw such as a stand in the screw hole.

When such a device is fixedly used in a car or the like, the attitude of the device should be arbitrarily changed. Therefore, the support apparatus as shown in FIG. 15 and FIG. 16 is conventionally used.

The conventional support device 10 is attached to the front end of the support shaft 1 installed in the interior of the vehicle to support the liquid crystal television 5 in any direction. The swing shaft 11 and the first operation are supported. It consists of a sieve 20.

A spherical portion 13 is formed at the lower end of the shaft portion 12 of the oscillation shaft 11, a disk shaped jaw portion 14 is formed at the upper end of the shaft portion 12, and a liquid crystal television is formed at the center of the upper surface of the jaw portion 14. The threaded part 15 screwed into the screw hole 6 formed in the bottom surface of (5) protrudes.

The swing shaft 11 is integrally formed of metal because the swing shaft 11 is screwed into the metal screw hole 6 formed in the bottom surface of the liquid crystal television 5.

The swing shaft 11 is supported by the first operating body 16. The first operating body 16 is formed in a substantially cylindrical shape, and the lower side of the inner peripheral wall has a screw groove 17 for screwing with the screw groove 2 formed in the outer peripheral edge of the support shaft 1. The screw hole 18 formed toward is formed. In the upper part of this screw hole 18, the ball receiving part 19 of the substantially hemispherical shape for accommodating the spherical part 13 of the oscillation shaft 11 is formed continuously with the screw hole 18. As shown in FIG.

The upper surface of the ball accommodation portion 19 is formed with a diameter larger than the jaw portion 14 of the swing shaft 11 and smaller than the spherical portion 13. The swing shaft 11 is swinged within a predetermined range in a state in which the spherical portion 13 is accommodated in the ball receiving portion 19, and the shaft portion 12 and its upper end side protrude to the upper side of the first operating body 16. Is supported.

Since the ball receiving portion 19 is continuous with the screw hole 18, the first operating body 16 is rotated in a predetermined direction in a state in which the tip end of the support shaft 1 corresponds to the screw hole 18. FIG. As shown in FIG. 16, the tip of the support shaft 1 enters into the screw hole 18 and abuts against the lower outer circumference of the spherical portion 13 of the swing shaft 11 accommodated in the ball receiving portion 19. As shown in FIG. . By this operation, the swing shaft 11 is fixed to the first operating body 16.

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

The second manipulator 20 is for strongly connecting the swing shaft 11 and the liquid crystal television 5, and the liquid crystal in a state where the second manipulator 20 is lowered to a position where the second manipulator 20 is brought into contact with the jaw portion 14 in advance. The screw portion 15 of the swing shaft 11 is screwed into the screw hole 6 of the television 5, and then the second operating body 20 is rotated in the upward direction to rotate the bottom surface of the liquid crystal television 5. If it makes contact with the strong, it can be fixed firmly between the oscillation shaft 11 and the liquid crystal television (5).

In addition, when changing the screen orientation of the liquid crystal television 5 in this state, the support shaft 1 and the oscillation shaft 11 are rotated by rotating the first operating body 16 in a direction to be pulled out from the support shaft 1. The contact state between the spherical portions 13 of is loosened. Accordingly, the swing shaft 11 can swing around the spherical portion 13, and the first operating member 16 is rotated in the opposite direction within the swing range of the liquid crystal television 5 in an arbitrary direction. When the support shaft 1 and the spherical portion 13 of the oscillation shaft 11 are brought into strong contact with each other, the liquid crystal television 5 can be supported while facing the direction.

However, since the conventional swing shaft used in the above-described support apparatus has a relatively complicated shape having a spherical portion at the lower end and a threaded portion at the upper end, it is necessary to rely on expensive molds when integrally forming it with metal. There was a problem. In addition, since the second operating body used by screwing into the screw portion of the metal rocking shaft is also limited to metal, there is a problem that the cost of the supporting device as a whole becomes very high.

Therefore, a method of integrally forming the whole swing shaft with a synthetic resin has also been considered. However, if the screwed portion of the synthetic resin is screwed into the metal screw hole of the device strongly, there is a problem that the strength of the screw is broken or the thread is broken.

In addition, when the spherical portion is formed of a metal or a hard synthetic resin, there is a case that the swing shaft may not be firmly fixed depending on the weight of the device and its posture because there is little friction between the support shaft abutting the spherical portion. .

SUMMARY OF THE INVENTION An object of the present invention is to provide a rocking shaft of a support device that realizes a low cost and easily regulates rocking, without reducing the strength by solving the above problem.

EMBODIMENT OF THE INVENTION Hereinafter, the structure for achieving the said objective of this invention is demonstrated based on the content as described in a claim.

The swing shaft of the support device according to claim 1 is used in a support device for supporting a device having a screw hole having a predetermined diameter on one surface so that its posture can be changed, the shaft portion; A spherical portion formed at one end of the shaft portion; A screw portion formed on the other end side of the shaft portion and screwed into a screw hole of the device, and supported to swing freely around the spherical portion in a state in which the shaft portion and the screw portion protrude outwards; In the rocking shaft of the support device in which the predetermined member abuts against the rocking member, the shaft portion and the spherical portion are formed of synthetic resin, and the screw portion formed of metal is fixed to the other end side of the shaft portion.

Moreover, the rocking shaft of the support apparatus of Claim 2 is a synthetic resin cylindrical part which has a screw groove in the outer periphery with a diameter larger than the said screw part, is formed in the other end side of the said shaft part.

In addition, the swing shaft of the support apparatus according to claim 3 is used in a support apparatus for supporting a device having a screw hole having a predetermined diameter on one surface so that its posture can be changed, the shaft portion; A spherical portion formed at one end of the shaft portion; A screw portion formed on the other end side of the shaft portion and screwed into a screw hole of the device, and supported to swing freely around the spherical portion in a state in which the shaft portion and the screw portion protrude outwards; In the rocking shaft of the supporting device in which the rocking is restricted by contacting a predetermined member with respect to the predetermined member, the outer circumferential portion of the spherical outer portion that abuts against the predetermined member is formed of a soft synthetic resin.

The present invention acts as follows by the hole.

In the swing shaft of the support device according to claim 1, since only the screw portion screwed into the screw hole of the device is made of metal and the other part is formed of synthetic resin, the screw hole of the device can be formed at low price. Strength can also be secured.

In the swing shaft of the support device according to claim 2, a screw groove is formed on the outer end of the cylindrical portion formed of synthetic resin on the other end side of the shaft portion, thereby screwing the conventional second metal working body into the metal screw portion. Instead of fastening, an inexpensive second synthetic body can be screwed into this cylinder.

Further, in the swing shaft of the support device according to claim 3, the outer peripheral part which comes into contact with the predetermined member among the outer peripheral parts of the spherical part is formed of a soft synthetic resin such as, for example, rubber. Since strong frictional force can be obtained, the swing shaft can be securely fixed.

Hereinafter, an embodiment of the present invention will be described based on the drawings.

1 to 6 show the appearance and internal structure of the support device 30 using the swing shaft of one embodiment. The support device 30 is attached to the support shaft 1 installed in the interior of a car or the like to support the liquid crystal television 5 so as to change itself.

The first operating body 31 of the support device 30 is formed in a hemispherical shape without an upper portion, and has an inner cylinder portion disposed at the center of the outer cylinder portion 32 and the outer cylinder portion 32 having a cylindrical shape. 33)

In the lower outer circumference of the outer cylinder portion 32, a thick portion (hereinafter referred to as a thick portion) (32a) and a thin portion (hereinafter, foil) in order to facilitate the rotation operation of the first operating body 31. It is called a flesh part; 32b are formed successively alternately in the circumferential direction. The upper part of the inner cylinder part 33 is formed in the shape of an inverted cone whose diameter becomes smaller toward the lower side, and forms the open-hole part and continues with the upper end of the outer cylinder part 32 via the inclined wall 33a.

In the substantially center of the inner cylinder part 33, in order to accommodate the spherical part of the oscillation shaft 37 mentioned later, the ball accommodating part 34 in which the upper part became hemispherical shape is formed. The upper portion of the ball receiving water 34 is formed to have a diameter smaller than that of the ball bearing water, and is continuous to the upper hole surface of the inner cylinder portion 33.

In the inner circumference of the inner cylinder portion 33, a screw groove 35 for screwing with the screw groove 2 formed in the tip outer circumference of the support shaft 1 is seen from the lower end of the inner cylinder portion 33, the ball receiving portion 34 Since it is formed up to, the support shaft 1 can enter the ball receiving portion 34 by the rotation operation.

In addition, a plurality of reinforcing plates 36 are connected between the inner wall of the outer cylinder portion 32 and the outer wall of the inner cylinder portion 33.

The first operating member 31 is integrally molded with a synthetic resin, for example, an ABS resin. A swing shaft 37 is fitted to the inner cylinder portion 33 of the first operating member 31 through the lower end side thereof.

The swing shaft 37 is composed of a shaft main body 38, a hemispherical body 45, a screw body 50 and a cylindrical body 53.

The shaft main body 38 of the swing shaft 37 is integrally molded with a hard synthetic resin similarly to the first operating body 31, and the shaft portion 39 is formed in a columnar shape with a larger diameter toward the upper end. An upper surface side is a spherical surface and a flat hemisphere portion 40 is formed at the lower end of the shaft portion 39, and a locking projection 41 is formed at the center of the lower surface of the hemisphere portion 40. The catching protrusion 41 is a cylindrical shaft 41a projecting downwardly from the lower surface of the hemisphere 40, and is formed at the lower end of the shaft 41a and has a larger diameter than the shaft 41a, and has a lower surface formed into a spherical surface. It is comprised by the disc 41b.

In addition, a circular jaw portion 42 is formed at the upper end of the shaft main body 38, and a screw bar 43 is formed at the upper surface of the jaw portion 42. The outer circumference of the screw 43 is formed in an elliptical shape coinciding with a portion of the outer circumference of the jaw portion 42, and its upper surface is formed flat. At the stop portions of both side surfaces parallel to each other of the screw 43, locking grooves 44 and 44 recessed in a U-shape toward the inside are formed along the longitudinal direction, respectively.

A hemispherical body 45 is attached to the lower surface of the hemisphere part 40 of the shaft main body 38 so as to overlap with the hemisphere part 40 and form a spherical part 37a of the swing shaft 37. The hemispherical body 45 is formed integrally with a soft synthetic resin such as rubber, and at the center of the circular upper surface 45a, a locking hole having a large inner diameter to be engaged with the locking protrusion 41 of the shaft main body 38 ( 46) is formed. The hemispherical body 45 elastically deforms the engaging projection 41 of the shaft main body 38 in this latching hole 46, thereby accommodating the spherical portion 37a together with the hemisphere portion 40 of the shaft main body 38. Form. In addition, since the locking holes 46 of the hemispheres 45 are engaged with each other with respect to the locking projections 41 in a reverse direction, once fixed to the shaft body 38, the locking holes 46 are driven by a normal force. There is no dropout.

On the other hand, the screw body 50 is arrange | positioned on the screw base 43 of the shaft main body 38. As shown in FIG. The screw body 50 is an elliptical substrate 51 formed so as to be superimposed on an upper surface of the screw bar 43, and a screw unit which is installed upright in the center of the substrate 51 and screwed into the screw hole 6 of the liquid crystal television 5. It consists of 52 and is integrally formed with the metal.

Moreover, the cylindrical body 53 is attached to the said screw base 43 so that it may become concentric with the screw body 50 and the shaft main body 38 from the upper side. The cylindrical body 53 forms the cylindrical portion 37b of the swing shaft 37, and is integrally formed into a cylindrical shape having a diameter larger than that of the screw portion 52 of the screw body 50 by hard synthetic resin. The outer periphery of the screw groove 54 is formed. In the center of the lower surface of the cylindrical body 53, a fitting hole 55 is formed in which an outer shape fitted to the screw 43 of the shaft main body 38 is elliptical, and the upper surface of the cylindrical body 53 is A through hole 56 is formed to be continuous with the fitting hole 55 and to penetrate the screw portion 52 of the screw body 50 to protrude upward.

Since the height of the fitting hole 55 is set substantially the same as the height of the height of the screw rod 43 plus the thickness of the board | substrate 51 of the screw body 50, the screw body 50 on the screw rod 43 is carried out. When the cylindrical body 53 is attached to the threaded rod 43 in the state where) is mounted, the substrate 51 of the threaded body 50 is fitted to the upper surface of the threaded rod 43 and the cylindrical body 53. It fits in between the upper surface of the hole 550, and the screw part 52 will be in the state which protruded through the through-hole 56. As shown in FIG.

In addition, since the external shape of the screw rod 43, the board | substrate 51, and the fitting hole 55 is almost the same elliptical shape, the screw body 50 is being fixed to the rotation shaft 37 with the rotation restricted. .

On the side walls 55a and 55b facing each other in parallel with the fitting holes 55, locking ribs 57 and 57 are engaged with the locking grooves 44 and 44 formed on both sides of the screw 43, respectively. The locking ribs 57, 57 are engaged with the locking grooves 44, 44 of the screw 43, thereby moving in the direction of the cylindrical body 53 with respect to the shaft main body 38 in the outward direction. This is regulated.

In addition, grooves 58 and 58 are formed on the outside of the side walls 55a and 55b of the fitting hole 55 formed in the cylindrical body 53 at predetermined depths. The grooves 58 and 58 are provided with the sidewalls 55a and 55b when the locking ribs 57 and 57 are pressed against the side of the screw 43 when the cylindrical body 53 is attached to the screw 43. ) To slightly deform outward to prevent the locking ribs 57 and 57 from being broken.

The outer diameter of the cylindrical body 53 is a ball receiving portion 34 of the first operating body 31 in order to prevent deformation of the screw grooves or the like from occurring during the screwing operation of the second operating body 60 described later. It is formed larger than the diameter of the upper open hole surface of the. In other words, in the state where the cylindrical body 53 is fixed to the shaft main body 38 in advance, the swing shaft 37 cannot be supported by the first operating body 31. Therefore, the assembly of the swing shaft 37 is made in the following order.

That is, as shown in FIG. 6, when the hemispherical body 45 is attached to the shaft main body 38, the lower side of the inner cylinder part 33 of the 1st operating body 31 will be made into the upper side of the screw rod 43 side. Insert it through. Then, in the state where the shaft portion 39 protrudes through the upper surface of the first operating body 31, the screw body 50 is placed on the screw base 43 (or the screw body 50 is mounted on the cylindrical body 53). ), And the cylindrical body 53 is fitted to the screw 43.

The swing shaft 37 supported in the first operating body 31 in this manner is an inclined wall 33a which forms an upper open hole surface of the first operating body 31 around the spherical portion 37a. The fluctuation is freed within the range regulated by. In addition, in this embodiment, the support shaft 1 screwed to the first operating body 31 via the lower surface side also serves as a predetermined member for restricting the swing of the swing shaft 37.

The second operating body 60 is screwed into the screw groove 54 formed on the outer circumference of the cylindrical body 53. The second operating body 60 has an inner cylinder portion 62 which is continuous at the upper end at the outer edge of the ring-shaped upper surface 60a and installed at the center of the outer cylinder portion 61, and similarly to the first operating body 31. It is integrally molded with hard synthetic resin.

On the outer circumference of the outer cylinder portion 61, a thick portion 61a and a thin portion 61b are formed alternately along the circumferential direction to facilitate the rotation operation. The inner circumference of the inner cylinder portion 62 is formed with a screw groove 63 for screwing with the outer circumference of the cylindrical body 53. The inner wall of the outer cylinder part 61 and the outer wall of the inner cylinder part 62 are connected by the some reinforcement board 65.

The second operating body 60 receives the rotational operation and moves along the axial direction of the threaded portion 52 of the swing shaft 37.

Next, a method of supporting the liquid crystal television 5 at the tip of the support shaft 1 by the support device 30 having the above configuration will be described.

First, as shown in FIG. 7, the first operation body 31 is rotated and the support shaft 1 is screwed into the inner cylinder portion 33, so that the tip of the support shaft 1 is turned to FIG. As shown, the upper surface of the spherical portion 37a is pushed on the upper wall of the ball receiving portion 34 by pushing the swinging shaft against the lower surface of the spherical portion 37a (the outer periphery of the rubber hemisphere 45 made of rubber). Tighten to contact position.

By the above operation, the rubber surface of the spherical portion of the swing shaft 37 is strongly pressed against the tip of the support shaft 1 and slightly deformed so as to be in surface contact with the tip surface of the support shaft 1, so as to be in contact with the support shaft 1. It generates strong friction. By this frictional force, the swing shaft 37 is fixed to the first operating member 31 in a state in which the swing and the rotation about the shaft portion are restricted.

Next, as shown in FIG. 9, the screw hole 6 of the liquid crystal television 5 is lowered as shown in FIG. 9 while the second operating body 60 is lowered slightly below the cylindrical body 53 as shown in FIG. Corresponding to the threaded portion 52 of the 30, the screw is rotated by rotating the liquid crystal television 5 side until its bottom surface abuts on the upper surface of the cylindrical body 53. Since this operation is a screwing operation of metals together, even if it is performed by a strong force, a thing such as a screw disconnection or a screw groove deforms does not occur.

Subsequently, as shown in FIG. 10, the second manipulator 60 is rotated to advance toward the liquid crystal television side, and the upper surface thereof is strongly brought into contact with the bottom surface of the liquid crystal television 5, whereby the oscillation shaft 37 and the liquid crystal television (5) Fix the space firmly. Even if the second operating body 60 is tightly tightened toward the liquid crystal television 5 by this operation, the outer periphery of the cylindrical body 53 has a much larger diameter than the threaded portion 52 and the second operating body is disposed on the outer periphery thereof. Since 60 is screwed in, the force acting on the screwed portion is very small as compared with the case where the diameter is formed as small as the threaded portion 52. Therefore, even in the case of synthetic resin, the deformation of the screw groove does not occur.

By the above operation, the support shaft 1 and the liquid crystal television 5 are fixed. When the posture (direction and inclination of the display surface) of the liquid crystal television 5 is set to a desired state, the first operation is performed in the above state. Once the sieve 31 is unwound and the attitude of the liquid crystal television 5 is determined as shown in FIG. 11, the first manipulating body 31 is tightened. In addition, since the swinging range of the swinging shaft 37 is limited to a range of less than 90 degrees in the upright state, even if the first operating body is tightened in the swinging state up to the maximum angle, the tip of the support shaft 1 is 12th. As shown in the figure, the outer abutment of the hemispherical body 45 of the swinging shaft 37 abuts. Therefore, the liquid crystal television 5 is stably fixed to the support shaft 1 as it is set by the strong frictional force between the rubber surface and the support shaft 1, and thus does not depart from the position.

In the present embodiment, the second operating body 60 is screwed into the cylindrical body 53 of the swing shaft 37, but a metal operating body may be used by screwing into the threaded portion 52.

As described above, the swing shaft of the present embodiment has only a screw portion made of metal, and the other shaft portion, the spherical portion, and the cylindrical portion are made of synthetic resin, and the second operation body made of synthetic resin can be used. You can do it much cheaper than that.

In the above embodiment, the metal screw body is fixed by the upper surface of the threaded rod formed on the shaft main body of the swing shaft and the cylindrical body attached to the screwed rod. For example, as illustrated in FIG. 13, the screw body 50 ′ having the screw holes 70 and 70 formed at both ends of the substrate 51 may be mounted on the screw rod 43 of the swing shaft 37. As shown in FIG. 14, the metal screw 71 made of the substrate 72 and the threaded portion 73 is stored on the side of the screw rod 43 'of the swing shaft 37 through the side surface. A groove 75 to be formed, and a cylindrical body (not shown) is attached to the screw rod 43 'in a state where the screw body 71 is inserted into the groove 75 (76 is a locking groove) or To fix the metal screw to the shaft body by insert molding, or to fix it with adhesive, etc. The multiple types of fixing methods can be used.

In the above embodiment, the shaft main body 38, the hemispherical body 45, and the cylindrical body 53 made of synthetic resin are formed separately, and they are fastened together with the metal screw body 50 to form one swing shaft ( 37), the present invention is not limited thereto, and in the case of using the various fixing methods for the screw body, the shaft main body 38 and the cylindrical body 53 may be integrally formed. In this case, the diameter of the shaft portion and the cylindrical portion may be made 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 receiving water. In addition, in the case where no strong friction force is required between the predetermined member (support shaft 1) and the swing shaft, the spherical portion, the shaft portion and the cylindrical portion may be formed by integral molding of synthetic resin, thereby further reducing the cost. Assembly work also becomes easier.

In addition, the second working body made of metal can be screwed with the threaded portion of the swinging shaft in the same manner as a conventional apparatus without providing a cylindrical portion at one end of the swinging shaft.

In the above embodiment, the lower half of the outer periphery of the spherical portion is formed of a soft synthetic resin such as rubber, but the range of the soft synthetic resin may be determined so as to be in contact with a predetermined member within all the swinging ranges. It can be determined according to the size of the swing range of the wider or narrower or the thickness of the predetermined member (support shaft in the above embodiment).

In addition, in the above embodiment, the rocking shaft used for the support device for supporting the liquid crystal television 5 has been described, but the rocking shaft of the present invention can also be used for the support device for supporting a device such as a camera or a video camera. In addition, in the above embodiment, the case in which the predetermined member abutting the spherical yarn of the swing shaft is the support shaft 1 for the device support has been described. However, the member for supporting the device is separate from the device support member (for example, a separate screw body). The swing shaft of the present invention can be similarly applied to a support device for a mechanism for bringing the abutment portion into contact with a spherical portion.

As described above, since the rocking shaft of the support device of the present invention is made of metal only with the screw portion and the other shaft portion and the spherical portion are made of synthetic resin, the rocking shaft of the support device of the present invention can be produced at a relatively low cost as compared to the rocking shaft formed integrally with conventional metals Moreover, the strength with respect to the screw hole of an apparatus does not fall.

In addition, in the rocking shaft which is formed with a diameter larger than the screw portion and has a synthetic resin cylindrical part having a screw groove at the outer circumference, on the other end side of the shaft portion, the synthetic resin operating body can be used in addition to the conventional metal operating body, so that the entire supporting device can be used. It can be produced at a lower price. In addition, since the outer diameter of the cylindrical portion is larger than the screw portion, even if the synthetic resins are screwed together, the deformation of the screw grooves does not occur, and thus the strength does not decrease.

In addition, in the rocking shaft formed of a soft synthetic resin such as rubber, the outer circumferential portion in which the predetermined member abuts among the outer circumferences of the spherical portion of the rocking shaft, a large friction force can be obtained between the predetermined member and the spherical portion. However, because the swing shaft does not deviate due to the support posture, it can be stably supported for a long time.

Claims (3)

It is used in the support device for supporting the apparatus which has the screw hole of predetermined diameter in one surface so that the attitude | position can be changed, And a shaft part; A spherical portion formed at one end of the shaft portion; A screw portion formed on the other end side of the shaft portion and screwed into a screw hole of the device, and being supported so as to be freely swinged around the spherical portion in a state in which the shaft portion and the screw portion protrude outwards, A rocking shaft of a support device in which rocking is restricted by a predetermined member abutting against the rocker, wherein the shaft portion and the spherical portion are formed of synthetic resin, and the screw portion formed of metal is fixed to the other end side of the shaft portion. Oscillating shaft of the supporting device. The rocking shaft of a support apparatus according to claim 1, wherein a cylindrical portion made of synthetic resin having a screw groove on an outer circumference with a diameter larger than the screw portion is formed on the other end side of the shaft portion. It is used in the support device for supporting the apparatus which has the screw hole of predetermined diameter in one surface so that the attitude | position can be changed, And a shaft part; A spherical portion formed at one end of the shaft portion; A screw portion formed on the other end side of the shaft portion and screwed into a screw hole of the device, and supported to swing freely around the spherical portion in a state in which the shaft portion and the screw portion protrude outwards; A rocking shaft of a support device in which swinging of a predetermined member abuts against a predetermined member, wherein an outer circumferential portion in contact with the predetermined member of the outer circumference of the spherical portion is formed of a soft synthetic resin. Coaxial.