TWM608832U - Rotary unions - Google Patents

Abstract

A rotary joint includes a female joint section, a male joint section, a ball and a sealing bolt. The female joint section has an outer surface and an inner surface, a through hole is formed between the outer surface and the inner surface of the female joint section, and the inner surface of the female joint section has an inner surface groove corresponding to the through hole. The male joint section has an outer surface and an inner surface, and the outer surface of the male joint section has an outer surface groove corresponding to the groove on the inner surface. When the male joint section is sleeved in the female joint section, so that the outer surface groove is aligned with the inner surface groove, the ball can be placed between the outer surface groove and the inner surface groove from the through hole and roll, and then the seal pin is used to seal the connection. Holes make the male joint section and the female joint section inseparable and rotatable relative to each other.

Description

Rotary joint

This creation relates to a rotary joint, in particular to a fixed, inseparable rotary joint.

Rotary joints are widely used in pneumatic tools, gas pipelines and other fields. Its basic structure is to use male and female sleeves to join, and through the design of the bearing, the male and female joints can be relatively rotated on the same axis. Rotary joints are divided into fixed type and clutch type according to whether the male and female joints can be arbitrarily separated. The fixed rotary joint is suitable for situations where there is no need for repeated disassembly and assembly, and the joint must withstand longitudinal pulling and transverse shear. The conventional rotary joint has a relatively complicated structure, which firstly increases the manufacturing difficulty and manufacturing cost, and secondly makes the structure difficult to resist longitudinal pulling and transverse shearing forces. In view of the shortcomings of the prior art, how to overcome the limitation of the aforementioned rotary joint through the improvement of the structural design has become an important issue in the related technical field.

The invention provides a rotary joint, which includes a female joint section, a male joint section, a ball and a sealing bolt. The female joint section is in the shape of a hollow column, and has an outer surface of a female joint section and an inner surface of a female joint section. There is a through hole between the outer surface of the female joint section and the inner surface of the female joint section, and the female joint The inner surface of the segment has an inner surface groove corresponding to the through hole. The male joint section is in the shape of a hollow column and has an outer surface of the male joint section and an inner surface of the male joint section. The outer surface of the male joint section has an outer surface groove corresponding to the groove on the inner surface. Wherein when the male joint section is sleeved in the female joint section so that the outer surface groove is aligned with the inner surface groove, the ball can be inserted into the outer surface groove from the through hole With the inner table And rolling between the face grooves, and then seal the through hole with the sealing plug, so that the male joint section and the female joint section are inseparable and can rotate relative to each other.

In another embodiment of the invention, the inner surface groove has an inner surface groove depth, the outer surface groove has an outer surface groove depth, and the inner surface groove depth is the same as the outer surface groove depth. The sum of the groove depths is equivalent to the diameter of the ball.

In another embodiment of the present invention, the depth of the groove on the inner surface is the same as the depth of the groove on the outer surface.

In another embodiment of the present invention, the female joint section has more than two through holes, and the inner surface of the female joint section has two or more inner surface grooves corresponding to the two or more through holes; the male joint section The outer surface has two or more grooves on the outer surface corresponding to two or more grooves on the inner surface.

In another embodiment of the present invention, two parallel groove surfaces are provided on the outer surface of the female joint section.

The beneficial effect of the present invention is that the male joint section and the female joint section are inseparable and rotatable relative to each other by using the balls inserted between the groove on the outer surface and the groove on the inner surface.

In order to further understand the features and technical content of this creation, please refer to the following detailed description and drawings about this creation. However, the drawings provided are only for reference and explanation, and are not used to limit this creation.

1: Female joint section

11: Outer surface of female joint section

111: Groove surface

12: Inner surface of female joint section

121, 121a, 121b: inner surface groove

121d: groove depth on the inner surface

13, 13a, 13b: through holes

2: Male joint section

21: Outer surface of male joint

211, 211a, 211b: outer surface groove

211d: groove depth on the outer surface

22: Inner surface of male joint

3, 3a, 3b: ball

3D: Ball diameter

4, 4a, 4b: sealing plug

Figure 1 is a three-dimensional schematic diagram of the first embodiment of the creative rotary joint.

Fig. 2A is a schematic cross-sectional view of the II-II section line of Fig. 1.

FIG. 2B is a schematic diagram of the assembly of the male joint section of FIG. 2 sleeved on the female joint section.

Fig. 3 is a partial enlarged schematic diagram of area III of Fig. 2B.

Figure 4 is a three-dimensional schematic diagram of the second embodiment of the creative rotary joint.

Figure 5 is a three-dimensional schematic diagram of the third embodiment of the creative rotary joint.

Figure 6 is a schematic side view of the third embodiment of the creative rotary joint.

The following is a specific embodiment to illustrate the implementation of the "rotary joint" disclosed in this creation, and those skilled in the art can understand the advantages and effects of this creation from the content disclosed in this specification. This creation can be implemented or applied through other different specific embodiments, and various details in this specification can also be based on different viewpoints and applications, and various modifications and changes can be made without departing from the spirit of this creation. In addition, the drawings in this creation are merely schematic illustrations, and are not based on the actual size of the depiction. The following implementations will further describe the related technical content of this creation in detail, but the disclosed content is not intended to limit the protection scope of this creation. Please refer to FIGS. 1 to 6 for the content of each paragraph disclosed in the following embodiments.

Please refer to Fig. 1, which is a three-dimensional schematic diagram of the first embodiment of the creative rotary joint. The rotary joint includes a female joint section 1, a male joint section 2, a ball 3 and a sealing bolt 4. The female joint section 1 is in the shape of a hollow column, and has a female joint section outer surface 11 and a female joint section inner surface 12, a through hole 13 is provided between the female joint section outer surface 11 and the female joint section inner surface 12, and the female joint section The surface 12 has an inner surface groove 121 corresponding to the through hole 13. The male joint section 2 is in the shape of a hollow column and has a male joint section outer surface 21 and a male joint section inner surface 22. The male joint section outer surface 21 has an outer surface groove 211 corresponding to the inner surface groove 121.

Please refer to FIG. 2A and FIG. 2B, which are schematic cross-sectional views of the II-II cutting line in FIG. 1. When the male joint section 2 is sleeved in the female joint section 1, the outer surface groove 211 is aligned with the inner surface groove 121, and the ball 3 can be inserted into the outer surface groove 211 and the inner surface groove 121 from the through hole 13 scroll. When the through hole 13 is sealed with the sealing bolt 4 again, the male joint section 2 and the female joint section 1 are inseparable and can rotate relative to each other. In this embodiment, one ball 3 is used, and the male joint section 2 and the female joint section 1 are inseparable and rotatable relative to each other while minimizing the manufacturing cost. However, the general knowledgeable person can use multiple balls as needed. 3. This creation is not limited to this.

Please refer to FIG. 3, which is a partial enlarged schematic diagram of area III in FIG. 2B. Inside The surface groove 121 has an inner surface groove depth 121d, the outer surface groove 211 has an outer surface groove depth 211d, and the sum of the inner surface groove depth 121d and the outer surface groove depth 211d is equivalent to the ball diameter 3D. Due to the fixing of the balls 3, the male joint section 2 and the female joint section 1 are inseparable; and because of the rolling of the balls 3, the male joint section 2 and the female joint section 1 can rotate relative to each other. In this embodiment, the inner surface groove depth 121d is the same as the outer surface groove depth 211d, which is half of the ball diameter 3D, which has the functions of convenient processing and stable structure. However, generally the knowledgeable person can use the inner surface groove 121 and the outer surface groove 211 of non-equal depth under the condition that the sum of the inner surface groove depth 121d and the outer surface groove depth 211d is equivalent to the ball diameter 3D. Creation is not limited to this.

Please refer to FIG. 4, which is a three-dimensional schematic diagram of the second embodiment of the creative rotary joint. In this embodiment, the female joint section 1 has two through holes 13a, 13b, and the inner surface 12 of the female joint section corresponds to the two through holes 13a, 13b and has two inner surface grooves 121a, 121b (not shown); the male joint section The outer surface 21 has two outer surface grooves 211a, 211b corresponding to the two inner surface grooves 121a, 121b (not shown). When the male joint section 2 is sleeved in the female joint section 1, the two outer surface grooves 211a, 211b are aligned with the two inner surface grooves 121a, 121b (not shown), and the two balls 3a, 3b can pass from the two through holes 13a , 13b is placed between the two outer surface grooves 211a, 211b and the two inner surface grooves 121a, 121b (not shown) and rolls. When the two through holes 13a, 13b are sealed with the two sealing bolts 4a, 4b, the male joint section 2 and the female joint section 1 are inseparable and can rotate relative to each other. This embodiment uses the structure of a plurality of grooves and balls to improve the structural strength of the rotary joint and ensure that the male joint section 2 and the female joint section 1 can still rotate smoothly relative to each other under the transverse shear force.

Please refer to Figures 5 and 6, which are respectively a three-dimensional schematic diagram and a side schematic diagram of the third embodiment of the creative rotary joint. In this embodiment, the outer surface 11 of the female joint section is provided with two mutually parallel groove surfaces 111, which can be used when clamps such as wrenches are used to clamp the rotary joint. It should be noted that the general knowledgeable person can adjust the setting of the groove surface 111 according to the shape of the fixture. For example, use 2 sets of mutually parallel groove surfaces 111 (suitable for four-corner wrenches), and 3 sets are mutually flat. The design of the groove surface 111 (suitable for 6-angle wrench), etc., this creation is not limited to this.

In summary, the beneficial effect of the present creation is to use the balls 3 inserted between the outer surface groove 211 and the inner surface groove 121 to make the male joint section 2 and the female joint section 1 inseparable and rotatable relative to each other.

The content disclosed above is only a preferred and feasible embodiment of this creation, and does not limit the scope of patent application for this creation. Therefore, all equivalent technical changes made using this creation specification and schematic content are included in the application for this creation. Within the scope of the patent.

1: Female joint section

11: Outer surface of female joint section

12: Inner surface of female joint section

121: inner surface groove

13: Through hole

2: Male joint section

21: Outer surface of male joint

211: Outer surface groove

22: Inner surface of male joint

3: ball

4: Sealing plug

Claims (6)

A rotary joint, comprising: a female joint section, the female joint section is in the shape of a hollow column, and has an outer surface of a female joint section and an inner surface of a female joint section, the outer surface of the female joint section and the female joint section There is a through hole between the inner surfaces, and the inner surface of the female joint section has an inner surface groove corresponding to the through hole; a male joint section, the male joint section is hollow columnar, and has a male joint section outside Surface and an inner surface of a male joint section, the outer surface of the male joint section has an outer surface groove corresponding to the groove on the inner surface; a ball; and a sealing plug; wherein when the male joint section is sleeved In the female joint section, the outer surface groove is aligned with the inner surface groove, and the ball can be inserted into the outer surface groove and the inner surface groove from the through hole and roll , And then seal the through hole with the sealing plug, so that the male joint section and the female joint section are inseparable and can rotate relative to each other. The rotary joint according to claim 1, wherein the inner surface groove has an inner surface groove depth, the outer surface groove has an outer surface groove depth, and the inner surface groove depth is equal to that of the inner surface groove depth. The sum of the depths of the grooves on the outer surface is equivalent to the diameter of the ball. The rotary joint according to claim 2, wherein the depth of the groove on the inner surface is the same as the depth of the groove on the outer surface. The rotary joint according to any one of claims 1 to 3, wherein the female joint section has two or more through holes, and the inner surface of the female joint section corresponds to two or more through holes There are two or more inner surface grooves at the through hole; the outer surface of the male joint section has two or more outer surface grooves corresponding to the two or more inner surface grooves. The rotary joint according to any one of claims 1 to 3, wherein the outer surface of the female joint section is provided with two mutually parallel groove surfaces. The rotary joint according to claim 4, wherein the outer surface of the female joint section is provided with two mutually parallel groove surfaces.

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