TWI880189B - Rotary joint structure - Google Patents

Abstract

A rotary joint structure includes two plates spaced apart, two friction members and a ball member. Each of two plates is provided with a ball socket with a through hole penetrating the plate. Each of two friction members includes a flexible cushion, a positioning portion and an enlarged portion. The cushion is located within the ball socket. The positioning portion is inserted in the through hole. The enlarged portion sticks out of the through hole and abuts against an outside of the plate. The ball member is located between the two plates and is movably received within the ball sockets to abut against the cushions.

Description

Swivel joint structure

The present invention relates to a joint structure, and more particularly to a joint that is pivotable in all directions.

In recent years, smart mobile electronic devices have become popular. People can browse information, watch videos, etc. at any time through their portable mobile phones or tablets. In order to facilitate use, a support stand is needed to support these devices. Furthermore, this support stand also needs to be able to adjust the support angle.

As mentioned above, there are some similar products on the market, such as those disclosed in patents No. 1692590 and No. 1724387, which utilize a ball head assembled in a ball socket to realize the universal pivot function, and a friction piece is provided on the ball head to generate friction resistance to the ball socket to prevent the ball head from loosening. However, the above-mentioned known structure will cause the assembly difficulty to be high, the manufacturing process to be complicated, and the disadvantage of high cost.

To solve the above-mentioned problem, the present invention provides a rotating joint structure, which includes: Two spaced-apart clamping plates, each of which is provided with a ball socket on one side facing each other, and the ball socket is provided with a through hole penetrating the clamping plate; Two friction members, each friction member includes a pad with elasticity, a positioning portion and an expansion portion with an outer diameter larger than the through hole connected in sequence, wherein the pad is located in the ball socket, the positioning portion extends into the through hole, and the expansion portion extends out of the through hole and faces the pad, and abuts against the outer side of the ball socket; A ball head is located between the two clamping plates, which can be movably accommodated in the ball socket and pressed against the pad of the friction member, and the pad is deformed under pressure to generate friction resistance to the ball head.

Preferably, a top surface of the pad facing the ball head is formed into a convex arc shape.

Furthermore, the friction member is provided with a material reduction hole penetrating the pad portion, the positioning portion and the expansion portion.

Preferably, a locking member is further included for clamping the ball head between the two clamping plates.

Preferably, another set of ball sockets, ball heads and friction members is included.

Please refer to Figures 1 to 3, which show the swivel joint structure provided by the present invention, which includes two clamps 1A, 1B, two ball heads 4, a locking piece 3 and a plurality of friction pieces 2. The two clamps 1A, 1B are arranged at a relative interval and connected by the locking piece 3, wherein the locking piece 3 is used to control the two clamps 1A, 1B to move closer or farther away from each other. In this embodiment, one of the clamps 1A is provided with a through hole 11, and the other clamp 1B is provided with a screw hole 12; on the other hand, the locking piece 3 is a bolt 31, one end of which is provided with a butterfly block 32 for the user to hold and control, and the bolt 31 passes through the clamp 1A with the through hole 11 and is screwed into the screw hole 12 of the other clamp 1B. Accordingly, when the user grasps the clip plate 1B and rotates the bolt 31 , the clip plate 1B moves toward the clip plate 1A along the bolt 31 .

As mentioned above, the two clamping plates 1A and 1B are respectively provided with a circular recess 13 at corresponding positions on the opposite sides, and a through hole 14 is further provided at the bottom of the recess 13. A friction member 2 is provided in the recess 13, and the friction member 2 is made of elastic material, such as rubber or silicone. The friction member 2 includes a pad 21 with a convex arc-shaped top surface and a columnar positioning portion 22 extending downward from the bottom surface of the pad 21. The friction member 2 is positioned in the recess 13 in such a manner that the pad 21 is accommodated in the recess 13 and the positioning portion 22 extends in the through hole 14. In this embodiment, further, the positioning portion 22 is further connected to an expansion portion 23 having an outer diameter larger than the through hole 14. The expansion portion 23 extends out of the through hole 14 and faces the pad 21 and abuts against the outer side of the clip, thereby allowing the friction member 2 to be more stably positioned in the recess 13.

Furthermore, in this embodiment, the shape of the expansion portion 23 is the same as that of the pad portion 21 , and the friction member 2 is provided with a material reduction hole 24 penetrating the pad portion 21 , the positioning portion 22 and the expansion portion 23 .

As shown in FIG. 4 , the recesses 13 of the two clamping plates 1A and 1B face each other, thereby jointly forming a ball socket for accommodating the ball head 4. The ball head 4 extends into the two recesses 13 with a portion (i.e., the upper and lower ends) respectively, and the two clamping plates 1A and 1B can be controlled by the aforementioned locking piece to approach each other, thereby pressing against the ball head 4 to fix it. At this time, the ball head 4 will contact the pad 21 of the friction member 2 in the recess 13. Since the two clamping plates 1A and 1B clamp the ball head 4, the pad 21 is pressed by the ball head 4, and then the convex arc-shaped top surface thereof is deformed and concave. Then, the pad 21 is tightly attached to the ball head 4 based on the elastic force of returning to its original shape, thereby increasing the friction resistance between the ball head 4 and the pad 21.

Preferably, a chamfer 131 is formed at the opening of the cavity 13 so that the ball head 4 can abut against the opening more stably.

In this embodiment, another set of recesses is further provided on the two clamping plates 1A, 1B, and the friction members as mentioned above are provided inside, thereby forming another ball socket for clamping another ball head 4.

The aforementioned ball head 4 is a part of various connecting components. As shown in FIG. 5 , the connecting component can be specifically a suction cup 51 or a mobile phone holder 52, or other devices with similar purposes. The present invention can adjust the positions of the two connecting components relative to the clamping plates 1A and 1B based on the use requirements by virtue of the freedom of the ball head 4 to pivot in the ball socket. After the adjustment, the two clamping plates 1A and 1B are brought closer to clamp the ball head 4 by rotating the bolt 31, thereby fixing the positions of the two connecting components. The friction member 2 forms a friction resistance due to being pressed against the ball head 4, thereby further strengthening the ability to fix the connecting components and making it difficult to loosen.

However, the disclosure of the above embodiments is only used to illustrate the present invention, not to limit the present invention. Any replacement of equivalent elements should still fall within the scope of the present invention.

In summary, those familiar with the art can understand that the present invention can achieve the aforementioned purpose and is in compliance with the provisions of the Patent Law, and therefore the application is filed in accordance with the law.

1A, 1B: Clamping plate 11: Perforation 12: Screw hole 13: Recess 131: Chamfer 14: Perforation 2: Friction piece 21: Pad 22: Positioning part 23: Expansion part 24: Reduction hole 3: Locking piece 31: Bolt 32: Butterfly block 4: Ball head 51: Suction cup 52: Mobile phone holder

Figure 1 is a three-dimensional schematic diagram of the present invention; Figure 2 is a three-dimensional exploded schematic diagram of the present invention; Figure 3 is a cross-sectional schematic diagram of the ball socket and the friction member of the present invention; Figure 4 is a cross-sectional schematic diagram of the overall structure of the present invention; Figure 5 is a schematic diagram of the present invention applied to one of the actual products.

1A, 1B: Clamping board

11:Piercing

12: Screw hole

13: Concave

14: Perforation

2: Friction parts

3: Lock the firmware

31: Bolts

32: Butterfly block

4: Ball head

Claims (5)

A rotating joint structure includes: Two spaced-apart clamping plates, each of which has a ball socket on one side facing each other, and the ball socket has a through hole penetrating the clamping plate; Two friction members, each of which includes a pad with elasticity, a positioning portion, and an expansion portion with an outer diameter larger than the through hole, which are connected in sequence, wherein the pad is located in the ball socket, the positioning portion extends into the through hole, the expansion portion extends out of the through hole and faces the pad, and abuts against the outer side of the clamping plate; A ball head located between the two clamping plates, which can be movably accommodated in the ball socket and presses against the pad of the friction member, and generates friction resistance to the ball head by the deformation of the pad under pressure. A rotating joint structure as described in claim 1, wherein a top surface of the pad facing the ball head forms a convex arc shape. A rotating joint structure as described in claim 1, wherein the friction member is provided with a material reduction hole penetrating the pad, the positioning portion and the expansion portion. The rotating joint structure as described in claim 1 further includes a locking device for clamping the ball head between two clamping plates. The rotating joint structure as described in claim 1 further includes another set of ball sockets, ball heads and friction parts.

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