JP2013127263A - Joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint which is not bulky, is excellent in usability even in a limited space, and is suitable for being mounted in a stand to be used when a device such as a portable telephone is installed inside a vehicle.SOLUTION: By sliding a guiding curved surface 23a of a guide body 23 in a guide space formed by an inner curved surface 21a of an inner support body 21 and an outer curved surface 22a of an outer support body 22, orientations of both inner and outer support bodies 21, 22 can be adjusted vertically and laterally with respect to the guide body 23, and the adjusted orientations are held by friction resistance between both support bodies 21, 22 and the guide body 23. As a joint part is constituted by the inner curved surface 21a, the outer curved surface 22a and the guiding curved surface 23a having forms of a part of a spherical surface of a hollow sphere, the joint part can be made small in size as compared with a ball joint using a sphere at the joint part.

Description

  The present invention relates to a joint, and more particularly to a joint suitable for mounting on a stand used when a portable information communication device such as a mobile phone, a digital camera, a portable navigation, and a tablet PC is installed in a vehicle.

  As one type of this type of joint, it has a joint consisting of a socket in which a ball and a ball are slidably fitted, and either the ball or the socket is connected to a holder of a device such as a mobile phone, and the other is used as a stand. A ball joint that is connected, has a stand installed in the passenger compartment, and can adjust the orientation of the holder up / down / left / right to make it easier to see the device mounted on the holder from the driver's or passenger's seat has been put to practical use.

  In this type of ball joint, the orientation of the device is set and held at a desired angle by the frictional resistance between the ball and the socket. Therefore, when the weight of the device is large, it is necessary to increase the frictional resistance by increasing the ball diameter to increase the area where the ball and the socket are in sliding contact. As a result, the entire ball joint becomes bulky, and the usability becomes extremely poor in a vehicle where the installation position and space of the stand are limited.

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  In view of the above-described problems, the present invention provides a joint that is not bulky, is easy to use even in a limited space, and is suitable for mounting on a stand used when installing a device such as a mobile phone in a vehicle. Objective.

The joint according to claim 1 is:
An inner support having an inner curved surface that forms part of the spherical surface of the hollow sphere;
An outer support that forms part of the spherical surface of the hollow sphere and has an outer curved surface with a radius of curvature greater than the radius of curvature of the inner curved surface;
It forms a part of the spherical surface of the hollow sphere, has a radius of curvature larger than the radius of curvature of the inner curved surface and smaller than the radius of curvature of the outer curved surface, and has a curved curved surface for guide formed by forming an opening at the top. With a guide body,
The inner curved surface is superimposed on the inner surface of the guide curved surface,
The outer curved surface is superimposed on the outer surface of the guide curved surface,
While connecting the inner support and the outer support integrally with the connecting means penetrating the opening,
The guide body, the inner support body and the outer support body are assembled so that the inner support body and the outer support body can slide in the vertical and horizontal directions while the guide curved surface is in sliding contact with the inner curved surface and the outer curved surface. To do.

The invention according to claim 2 is the joint according to claim 1,
A cylindrical shaft portion having a through hole is provided on the inner side of the top of the outer curved surface,
Forming a recess on the outside of the top of the inner curved surface;
A guide space in which the guide curved surface slides by inserting the cylindrical shaft portion through the opening and fitting the tip portion into the concave portion is defined by an outer curved surface and an inner curved surface,
The connecting shaft is inserted into the through hole, and the inner support and the outer support are integrally coupled.

According to the joint of claim 1, by sliding the inner support and the outer support along the guide curved surface, the direction of the outer support can be adjusted in the vertical direction and the horizontal direction. It can be held by frictional resistance between the inner and outer curved surfaces and the guide curved surface. Therefore, by mounting the holder of the information communication device on the outer support, the direction of the information communication device can be adjusted in the vertical direction and the horizontal direction.
In the joint according to the first aspect of the present invention, since the joint portion is constituted by the inner curved surface, the outer curved surface, and the guide curved surface that constitute a part of the spherical surface of the hollow sphere, a ball that uses a sphere for the joint portion. Compared to a joint, the joint part can be downsized. For this reason, it is easy to use even in a limited space such as an interior space.

  According to the second aspect of the present invention, the inner support and the outer support are overlapped by fitting the tip of the cylindrical shaft portion into the recess formed at the top of the inner curved surface, so that the assembly work of both supports is performed. Becomes easier.

In addition, since the connecting shaft can be inserted into the through hole of the inner curved surface and the through hole of the outer curved surface , and the inner support body and the outer support body can be integrally coupled, the assembling work of both supports is facilitated.
Furthermore, since the guide space is formed by the tube shaft portion, the frictional resistance generated between the guide curved surface and the inner and outer curved surfaces can be set to an appropriate value by appropriately setting the length of the tube shaft portion.

It is sectional drawing which shows the vehicle-mounted tablet holder stand equipped with the joint which concerns on 1st Example of this invention, and the joint. It is an exploded view which shows the joint which concerns on 1st Example of this invention. It is a disassembled perspective view which shows the joint which concerns on 1st Example of this invention. It is a perspective view which shows the back surface of the holder plate of the vehicle-mounted tablet holder stand equipped with the joint which concerns on 1st Example of this invention. It is a perspective view which shows the surface of the holder plate of the vehicle-mounted tablet holder stand equipped with the joint which concerns on 1st Example of this invention. It is sectional drawing which shows the vehicle-mounted tablet holder stand equipped with the joint which concerns on 2nd Example of this invention, and the joint.

  The present invention will be described below with reference to the drawings. FIG. 1 shows an in-vehicle tablet holder stand having a joint according to a first embodiment of the present invention. 2 and 3 show the joint according to the first embodiment of the present invention. The in-vehicle tablet holder stand 10 includes a joint 20, a stand 30 and a holder plate 40.

  The joint 20 includes an inner support body 21, an outer support body 22 and a guide body 23, a hook plate 24, a knob 25, a bolt 26 and a nut 27, and the inner support body 21, the outer support body 22, the guide body 23, and the knob 25 are provided. Both are molded with resin. The inner support 21 includes an inner hemispherical curved surface 21a and a first cylindrical shaft portion 21b that protrudes from the inner side of the central portion of the inner hemispherical curved surface 21a. A first through hole 21c is formed in the first cylindrical shaft portion 21b so as to penetrate the top of the inner hemispherical curved surface 21a. Further, a concave portion 21d (see FIG. 3) having a circular cross section is formed at the top of the inner hemispherical curved surface 21a.

  The outer support 22 includes an outer hemispherical curved surface 22a having a radius of curvature larger than that of the inner hemispherical curved surface 21a of the inner support 21, and a pedestal portion 22b and a pedestal portion 22b protruding from the top of the outer hemispherical curved surface 22a. A second cylindrical shaft portion 22 c (see FIG. 3) that protrudes from the inner center portion and has a tip portion that can be fitted into the concave portion 21 d of the inner support 21 is provided. A second through hole 22d that penetrates the top of the outer hemispherical curved surface 22a is formed in the second cylindrical shaft portion 22c.

  The guide body 23 includes a guide hemispherical curved surface 23a having a radius of curvature larger than that of the inner hemispherical curved surface 21a of the inner support 21 and smaller than that of the outer hemispherical curved surface 22a of the outer support 22. An opening 23b having a diameter smaller than the maximum outer diameter of the inner hemispherical curved surface 21a of the inner support 21 and smaller than the maximum inner diameter of the outer hemispherical curved surface 22a of the outer support 22 (see FIG. 3). ) Is formed. The guide body 23 has a bottom opening 23c, flange pieces 23d are formed around the bottom opening 23c, and screw holes 23e are formed at four corners of the flange piece 23d.

The hook plate 24 includes a base plate 24a, an L-shaped piece 24b projecting from the center thereof, and a connecting piece 24c that connects the L-shaped piece 24b and the base plate 24a, and through holes 24d are formed at four corners of the base plate 24a.
A third through hole 25 a is formed at the center of the knob 25. A hexagonal hole 25b (see FIG. 3) into which the nut 27 is fitted is formed around the third through hole 25a on the outer surface of the knob 25.

  The stand 30 includes a base plate 31. A hook bar 32 and a spring receiving projection 33 are provided on the upper surface of the back surface of the base plate 31, and a bearing piece 34 is provided on the lower surface of the back surface. A fourth through hole is formed at the center of the base plate 31.

  A hook 32 a is formed at the tip of the hook bar 32. Further, guide grooves 32 b are formed on both side surfaces of the hook bar 32 along the longitudinal direction of the hook bar 32 up to the middle portion. The guide groove 32 b extends to the middle part of the hook bar 32. A slide piece 35 is slidably assembled in the guide groove 32b. The slide piece 35 has a latch piece 35a formed at the lower end on the back surface. The slide piece 35 is urged in the direction of the hook 32 a by a coil spring 36 attached to the spring receiving projection 33. A heel piece 37 is assembled to the bearing piece 34 so as to be swingable by a shaft 37a.

  As shown in FIGS. 4 and 5, the holder plate 40 has a rectangular outer shape, and a joint hole 40a is formed at the center of the back surface. The joint hole 40a includes a rectangular first hole 40b and a rectangular second hole 40c narrower than the first hole 40b, and the first hole 40b and the second hole 40c communicate with each other. A holding frame 40 d is formed on the outer peripheral portion on the front surface side of the holder plate 40. The holder plate 40 can be detachably mounted by fitting the tablet PC to the holding frame 40d. When removing the tablet PC attached to the holder plate 40, the tablet PC is pushed out through a hole 40e formed in one corner of the holder plate 40 through a finger.

The configurations of the joint 20, the stand 30 and the holder plate 40 of the in-vehicle tablet holder stand 10 are as described above. Next, the assembling method and the using method will be described.
The joint 20 superimposes the outer peripheral surface of the guiding hemispherical curved surface 23 a of the guide body 23 on the outer hemispherical curved surface 22 a of the outer support 22. Next, the top of the inner hemispherical curved surface 21 a of the inner support 21 is passed through the top opening 23 b of the guide body 23, and the tip of the cylindrical shaft portion 22 c of the outer support 22 is fitted into the recess 21 d of the inner support 21. In this way, the outer peripheral surface of the inner hemispherical curved surface 21a of the inner support 21 is superposed on the inner peripheral surface of the guiding hemispherical curved surface 23a of the guide body 23, and the outer peripheral surface of the guiding hemispherical curved surface 23a of the guide body 23 is made. The guide body 23, the inner support body 21, and the outer support body 22 are superposed on the inner peripheral surface of the outer hemisphere curved surface 22 a of the outer support 22, and the guide hemisphere curved surface 23 a of the guide body 23 is the inner hemisphere of the inner support 21. In the guide space 20a defined by the curved surface 21a and the outer hemispherical curved surface 22a of the outer support 22, it is slidably assembled. Then, the bolt 26 is inserted from the bottom opening 23c of the guide body 23 into the first through hole 21cd of the inner support body, the second through hole 22d of the outer support body, the fourth through hole of the base plate 31 of the stand 30, and the third penetration of the knob 25. The bolt 26 is fastened to the nut 27 that is inserted into the hole 25 a and fitted into the hexagonal hole 25 b of the knob 25 to integrally connect the outer support 22, the guide body 23, and the inner support 21. Fix to the base plate 31. Next, the base plate 24 a of the hook plate 24 is fixed to the flange piece 23 d of the guide body 23 through the screw 28 e through the through hole 24 d of the base plate 24 and the screw hole 23 e of the flange piece 23 of the guide body 23. Then, the holder plate 40 is attached to the hook plate 24. When the L-shaped piece 24b of the hook plate 24 is inserted into the first hole 40b and is slid upward along the base plate 24a, the connecting piece 24c is fitted into the second hole 40c, and the L-shaped piece 24b is the back surface of the joint hole 40a. The holder play 40 is detachably connected to the hook plate 24.

  After the joint 20, the stand 30 and the holder plate 40 are assembled together, the hook bar 32 of the stand 30 is inserted into the gap of the fin 51 of the air conditioner louver 50 in the vehicle interior, and the hook 32 a at the front end is hooked on the rear end of the fin 51. At the same time, the latch piece 35 a of the slide piece 35 is latched to the front end of the fin 51. Since the slide piece 35 is biased toward the hook 32 a by the coil spring 36, the fin 51 is sandwiched between the hook 32 a of the hook bar 32 and the latching piece 35 a of the slide piece 35. Meanwhile, the heel piece 37 is brought into contact with the instrument pad 52 of the instrument board below the air conditioner louver 50. Thus, after attaching the stand 30 to the air conditioner louver 50 in the passenger compartment, the tablet PC is mounted on the holder plate 40.

  In the joint 20, the inner support body 21 and the outer support body 22 are integrally slid along the guide hemispherical curved surface 23 a of the guide body 23, so that the direction of the outer support body 22 is changed in the vertical direction and the horizontal direction. The adjusted orientation can be maintained by the frictional resistance between the inner and outer hemispherical curved surfaces 21a, 22a and the guide hemispherical curved surface 23a of the guide body 23. Thus, by mounting the information communication devices on the holder plate 40, the direction of the information communication devices can be adjusted in the vertical direction and the horizontal direction.

  In the joint 20 according to the present embodiment, the joint portion is constituted by the inner support body 21, the outer support body 22, and the guide body 23 each having a hemispherical curved surface. Therefore, compared to a ball joint using a sphere for the joint portion, The part can be miniaturized. For this reason, it is easy to use even in a limited space such as an interior space.

  Moreover, since the support inner piece 21 and the outer support 22 are overlapped by fitting the tip of the cylindrical shaft 22c into the recess 21d formed on the top of the inner hemispherical curved surface 21a of the inner support 21, both the supports 21, Assembling work of 22 becomes easy. Furthermore, the bolts 26 can be inserted into the through holes 21c of the inner support 21 and the through holes 22d of the outer support 22, so that the inner support 21 and the outer support 22 can be integrally connected. Assembly work is easy.

  In this embodiment, the in-vehicle tablet holder stand 10 has been described as an application example of the joint 20. However, the present invention is not limited to the in-vehicle stand, and may be applied to other stands such as a desk lamp used in a house. Is possible.

FIG. 6 shows an in-vehicle tablet holder stand 10A provided with a joint according to the second embodiment of the present invention. The in-vehicle tablet holder stand 10 </ b> A includes a joint 60, a stand 30 and a holder plate 40.

  The joint 60 includes an inner support body 61, an outer support body 62 and a guide body 63, a bolt 64, and a nut 65. The inner support body 61, the outer support body 62, and the guide body 63 are all molded from resin. The inner curved support 61 has an inner curved surface 61a that constitutes a part of the spherical surface of the hollow sphere. A through hole is formed at the inner center of the inner curved surface 61a, and a hexagonal hole 61b is formed around the through hole. And a nut 65 is fitted in the hexagonal hole 61b.

  The outer support body 62 includes a cylinder body 62a and a lid body 62b, and the lid body 62b is screwed to the cylinder body 62a. The bottom surface of the cylindrical body 62a has an outer curved surface 62c that constitutes a part of the spherical surface of the hollow sphere, and a through hole is formed in the outer curved surface 62c. A locking projection piece 62d and an L-shaped hook piece 62e are integrally formed on the surface of the lid 62b. Two hook pieces 62e are formed, and a locking projection piece 62d is formed between them.

  The guide body 63 has a guide curved surface 63a constituting a part of the spherical surface of the hollow sphere, and a flange 63b having a square outer shape is integrally formed around the guide curved surface 63a. A circular opening 63c is formed at the center of the curved guide surface 63a. The curvature radius of the guide curved surface 63a of the guide body 63 is set to be larger than the curvature radius of the inner curved surface 61a and smaller than the curvature radius of the outer curved surface 62c. The circular opening 63c of the guide body 63 is set to have a diameter smaller than the maximum outer diameter of the inner curved surface 61a and smaller than the maximum inner diameter of the outer curved surface 62c.

  The joint 60 overlaps the inner curved surface 61a with the guiding curved surface 63a and the outer curved surface 62c, and the bolt 64 is inserted into the through hole of the inner curved surface 61a, the opening 63c of the guide body 63, and the through hole of the outer curved surface 62c. Then, by tightening the bolt 64 to the nut 65, the inner support body 61 and the outer support body 62 are assembled to the guide body 63 so as to be slidable integrally in the left-right direction and the up-down direction along the guide body 63. .

  The joint 60 in which the inner support body 61, the guide body 63, and the outer support body 62 are integrally assembled with bolts 64 and nuts 65, screws 66 are inserted into through holes formed at the four corners of the flange 63b of the guide body 63. The screws 66 are fixed to the base plate 31 by screwing them into the base plate 31.

  Since the other configuration of the in-vehicle tablet holder stand 10A according to the second embodiment is the same as that of the in-vehicle tablet holder stand 10 according to the first embodiment, the same components are denoted by the same reference numerals and description thereof is omitted. To do.

  In the joint 60 according to the second embodiment, since the joint portion is formed by the curved surfaces 61a, 62a, 63c that constitute a part of the spherical surface of the hollow sphere, the first embodiment uses the hemispherical surface of the hollow hemisphere. Compared to the joint 20, the joint portion can be further downsized.

20, 60 ... joints 21, 61 ... inner supports 21a, 61a ... inner curved surface 21c ... first through hole 21d ... concave portions 22, 62 ... outer supports 22a, 62c ... outer curved surfaces 22c ... cylindrical shaft portion 22d ... first 2 through holes 23, 63 ... guide bodies 23a, 63a ... curved surfaces for guide 26, 64 ... bolts

Claims (2)

An inner support having an inner curved surface that forms part of the spherical surface of the hollow sphere;
An outer support that forms part of the spherical surface of the hollow sphere and has an outer curved surface with a radius of curvature greater than the radius of curvature of the inner curved surface;
It forms a part of the spherical surface of the hollow sphere, has a radius of curvature larger than the radius of curvature of the inner curved surface and smaller than the radius of curvature of the outer curved surface, and has a curved curved surface for guide formed by forming an opening at the top. With a guide body,
The inner curved surface is superimposed on the inner surface of the guide curved surface,
The outer curved surface is superimposed on the outer surface of the guide curved surface,
While connecting the inner support and the outer support integrally with the connecting means penetrating the opening,
The guide body, the inner support body and the outer support body are assembled so that the inner support body and the outer support body can slide in the vertical and horizontal directions while the guide curved surface is in sliding contact with the inner curved surface and the outer curved surface. To joint. A cylindrical shaft portion having a through hole is provided on the inner side of the top of the outer curved surface,
Forming a recess on the outside of the top of the inner curved surface;
A guide space in which the guide curved surface slides by inserting the cylindrical shaft portion through the opening and fitting the tip portion into the concave portion is defined by an outer curved surface and an inner curved surface,
The joint according to claim 1, wherein the connecting shaft is inserted into the through hole to integrally couple the inner support and the outer support.

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