Rotary joint and water outlet device using the same

Abstract

The utility model discloses a rotary joint, and discloses a water outlet device with the rotary joint, wherein the rotary joint comprises: a rotating shaft; a shaft sleeve is sleeved on the rotating shaft, the inside of the shaft sleeve is provided with a relatively fixed clamping piece, the clamping piece is surrounded on the rotating shaft, a wave surface is arranged on the clamping piece, the wave peak of the wave surface is abutted on the rotating shaft to make the clamping piece exert radial clamping force on the rotating shaft; the clamping and holding effect of the clamping piece on the rotating shaft makes the rotating shaft rotate relative to the shaft sleeve, can form damping, can avoid the deflection of the rotating shaft relative to the shaft sleeve at the same time, positioning is stable, and the service life is long.

Description

Technical Field

[0001] This utility model relates to the field of water outlet device technology, and in particular to a rotary joint and a water outlet device using the same. Background Technology

[0002] Modern rotary faucets primarily rely on a compressed rubber ring abutting against the shaft to generate rotational resistance. Since this resistance is achieved through rubber compression, the compression amount must be increased; otherwise, the support arm will fall off. This leads to wear and tear on the rubber ring over time, causing seal failure and a short lifespan. Once the rubber ring fails, the support arm cannot be positioned correctly, affecting product usability. Utility Model Content

[0003] The present invention aims to at least partially solve one of the aforementioned technical problems in the related art. To this end, the present invention proposes a rotary joint.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] This utility model also proposes a water outlet device having the above-mentioned rotating joint.

[0006] The rotary joint according to a first aspect of the present invention includes:

[0007] Shaft;

[0008] A bushing is fitted onto the rotating shaft. Inside the bushing, there is a relatively fixed clamping member that surrounds the rotating shaft. The clamping member has a wavy surface, and the crest of the wavy surface abuts against the rotating shaft so that the clamping member applies a radial clamping force to the rotating shaft.

[0009] The rotary joint according to the present utility model embodiment has at least the following beneficial effects: by using the clamping and holding effect of the clamping member on the rotating shaft, damping can be formed when the rotating shaft rotates relative to the bushing, and at the same time, the rotating shaft can be prevented from swaying relative to the bushing, the positioning is stable, and the service life is long.

[0010] According to some embodiments of the present invention, the clamping member is capable of elastic deformation in the radial direction, and the clamping member tends to elastically retract in the direction of the rotation axis.

[0011] According to some embodiments of the present invention, a through-hole is provided on the side wall of the bushing, the through-hole connects the inner and outer sides of the bushing radially, a part of the clamping member is opposite to the position of the through-hole, and the part of the clamping member opposite to the position of the through-hole is provided with the wavy surface.

[0012] According to some embodiments of the present invention, a gear shifting disc is also included. The gear shifting disc is coaxially arranged with the bushing and can rotate relative to it. The side of the gear shifting disc near the bushing is provided with a plurality of grooves arranged sequentially along the circumference. The bushing is provided with a first elastic member. When the bushing and the gear shifting disc rotate relative to each other, the first elastic member can slide into or out of each of the grooves in sequence.

[0013] According to some embodiments of the present invention, the gear shift plate is installed at one end of the bushing, and a fixing post is provided on the side of the gear shift plate away from the bushing.

[0014] According to some embodiments of the present invention, the first elastic element elastically expands and contracts relative to the gear plate along the axial direction of the bushing, and there is an axial gap between the bushing and the gear plate. The two ends of the rotating shaft are a first end and a second end, respectively. Both the first end and the second end extend out of the bushing. An adjusting nut is provided at the end of the bushing away from the gear plate. The adjusting nut is threadedly connected to the first end. A second elastic element is provided between the adjusting nut and the bushing. The second elastic element applies an elastic force to the bushing to move it toward the gear plate.

[0015] According to some embodiments of the present invention, a locking screw is installed on the side wall of the bushing, and the two ends of the rotating shaft are a first end and a second end, respectively. Both the first end and the second end pass through the bushing. A retaining ring is engaged on the outer peripheral wall of the first end, and the retaining ring restricts the travel of the first end in the direction of moving inward toward the bushing. An external thread is provided on the outer wall of the second end.

[0016] According to some embodiments of the present invention, the rotating shaft has an axially penetrating channel inside.

[0017] According to some embodiments of the present invention, the clamping component is integrally injection molded in the bushing.

[0018] A water outlet device according to a second aspect of the present invention includes a rotary joint and at least two connecting arms, wherein the rotary joint is installed between two connected connecting arms.

[0019] The water outlet device according to the embodiment of this utility model has at least the following beneficial effects: with the cooperation of the rotary joint, the connecting arm can rotate stably and be positioned at the current position.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of one embodiment of the rotary joint;

[0023] Figure 2 yes Figure 1 A structural decomposition diagram;

[0024] Figure 3 yes Figure 1 Internal structure diagram;

[0025] Figure 4 This is a schematic diagram of the bushing structure;

[0026] Figure 5 A schematic diagram of another embodiment of the rotary joint;

[0027] Figure 6 yes Figure 5 Internal structure diagram;

[0028] Figure 7 Schematic diagram of the water outlet device;

[0029] Figure 8 yes Figure 7 Partial structural decomposition diagram;

[0030] Figure 9 yes Figure 7 A partial internal structural diagram.

[0031] Reference numerals: Rotary joint 001; Rotary shaft 100; First end 110; Second end 120; Channel 130; Bushing 200; Through port 210; Slide groove 220; Locking screw 230; Clamping member 300; Wavy surface 310; Wave crest 311; Stop plate 400; Groove 410; Fixing post 420; Gap 430; First elastic element 500; Adjusting nut 600; Second elastic element 700; Connecting arm 800; Snap ring 900. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0033] This utility model relates to a rotary joint, including a rotating shaft 100 and a bushing 200.

[0034] like Figure 1, Figure 2 , Figure 3 and Figure 4 As shown, the bushing 200 is fitted onto the rotating shaft 100, allowing the shaft 100 to rotate axially relative to the bushing 200. A clamping member 300 is provided inside the bushing 200. The clamping member 300 is fixedly installed relative to the bushing 200. This can be achieved by the clamping member 300 being installed as an independent component within the bushing 200, or by fixing it to the bushing 200 using methods such as adhesive bonding or screw tightening. Alternatively, the clamping member 300 can be integrally injection molded within the bushing 200. The clamping member 300 is arranged around the rotating shaft 100 and can be configured as a circular ring structure. A wavy surface 310 is provided on the clamping member 300, which can be located on the side of the clamping member 300 facing the rotating shaft 100, or the entire clamping member 300, or a portion thereof, can extend in a wavy shape around its central axis. Both the inner and outer walls of the clamping member 300 are wavy surfaces 310. The convex portion of the wavy surface 310 facing the rotating shaft 100 is designated as the crest 311 of the wavy surface 310. Each crest 311 abuts against the rotating shaft 100, causing the clamping member 300 to apply a radial clamping force to the rotating shaft 100. The clamping and holding action of the clamping member 300 on the rotating shaft 100 creates damping when the rotating shaft 100 rotates relative to the bushing 200, while simultaneously preventing the rotating shaft 100 from wobbling relative to the bushing 200. Conventional structures using rubber rings to dampen the rotating shaft 100 require the rubber ring to be kept under compression to achieve this damping effect. However, the rubber ring is constantly under compression, leading to premature aging and a short service life. The clamping member 300, utilizing the wavy surface 310 to dampen the rotating shaft 100, has a longer service life.

[0035] In practical use, rotary joints are mainly used on two components that need to rotate relative to each other, serving as a rotating joint between the two components. This utility model also relates to a water outlet device, including a rotary joint housing and at least two connecting arms 800. Two, three, or more connecting arms 800 can be provided. In this embodiment, as... Figure 7 , Figure 8 and Figure 9 As shown, the water outlet device has four connecting arms 800, which are connected sequentially. A rotary joint 001 is installed between two connected connecting arms 800. The rotating shaft 100 on the rotary joint is fixedly connected to one of the connecting arms 800, and the bushing 200 is fixedly connected to the other connecting arm 800. The two connecting arms 800 can rotate relative to each other through the cooperation of the rotating shaft 100 and the bushing 200. The damping of the rotating shaft 100 by the clamping member 300 enables the two relatively rotating connecting arms 800 to be relatively positioned at their current positions.

[0036] The clamping member 300 is capable of elastic deformation in the radial direction and tends to elastically retract towards the rotating shaft 100, that is, the wave crest 311 on its wavy surface 310 tends to elastically move towards the rotating shaft 100. After long-term use, when the wave crest 311 wears due to the rotation of the rotating shaft 100, the clamping member 300 can retract towards the rotating shaft 100 under its own elastic action to compensate for the wear of the wave crest 311, so that the wave crest 311 can stably and fully abut against the rotating shaft 100 to generate damping, and to prevent the rotating shaft 100 from deviating relative to the bushing 200 due to wear.

[0037] Among them, such as Figure 1 , Figure 2 and Figure 4 As shown, a through-hole 210 is provided on the side wall of the bushing 200. The through-hole 210 connects the inner and outer sides of the bushing 200 radially. A portion of the clamping member 300 is positioned opposite the through-hole 210. A wavy surface 310 is provided on the portion of the clamping member 300 that is positioned opposite the through-hole 210. A wavy surface 310 may also be provided on the portion of the clamping member 300 that is not positioned opposite the through-hole. The portion of the clamping member 300 that is aligned with the through-hole 210 can undergo elastic deformation radially, thereby causing the wavy surface 310 at the corresponding position to undergo elastic deformation.

[0038] In one embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, the rotary joint also includes a stop plate 400. The stop plate 400 is coaxially arranged with the bushing 200 and can rotate relative to it. The stop plate 400 can be located at one end of the bushing 200, and the side of the stop plate 400 near the bushing 200 has a plurality of grooves 410 arranged sequentially in a circumferential direction. The bushing 200 is provided with a first elastic element 500, which can be a combination structure of a ball and a spring or a spring sheet, etc. The first elastic element 500 can elastically move toward the stop plate 400. When the bushing 200 and the stop plate 400 rotate relative to each other, the first elastic element 500 can slide into or out of each groove 410 in sequence, thereby producing a ticking sound. The stop plate 400 is installed at one end of the bushing 200, and a fixing post 420 is provided on the side of the stop plate 400 away from the bushing 200. During installation, the gear shift plate 400 can be inserted into an external component via a fixing post 420. For example, the gear shift plate 400 can be inserted into and fixed to the connecting arm 800 connected to the rotating shaft 100 on the water outlet device via the fixing post 420, so that the gear shift plate 400 and the rotating shaft 100 are fixed relative to each other around the axis without rotating. The bushing 200 drives the first elastic element 500 to rotate relative to the gear shift plate 400.

[0039] Based on the above embodiment, the first elastic element 500 elastically expands and contracts relative to the stop plate 400 along the axial direction of the bushing 200. A gap 430 exists axially between the bushing 200 and the stop plate 400. Alternatively, a groove 220 may be provided on the bushing 200, and a portion of the stop plate 400 may slide on the groove 220, allowing relative movement of a certain distance axially between the bushing 200 and the stop plate 400. A gap 430 is formed between the opposing surfaces of the bushing 200 and the stop plate 400. The two ends of the rotating shaft 100 are a first end 110 and a second end 120, both of which extend through the bushing 200. In this embodiment, the second end 120 is closer to the stop plate 400 than the first end 110. An adjusting nut 600 is provided at the end of the bushing 200 furthest from the stop plate 400. The adjusting nut 600 is threadedly connected to the first end 110. When the adjusting nut 600 rotates, it moves along the axial direction of the rotating shaft 100. A second elastic element 700 is provided between the adjusting nut 600 and the bushing 200. The second elastic element 700 can be a spring, a snap ring, or other components. The second elastic element 700 uses the adjusting nut 600 as a support position and applies an elastic force to the bushing 200, causing the bushing 200 to move towards the stop plate 400. Under the action of the first elastic element 500, the bushing 200 forms a gap 430 with the stop plate 400. By adjusting the position of the adjusting nut 600, the force of the second elastic element 700 pressing the bushing 200 downward toward the stop plate 400 is changed, thereby changing the size of the gap 430 between the stop plate 400 and the bushing 200. In other words, the elastic pressure of the first elastic element 500 against the stop plate 400 with the bushing 200 as support is changed, thereby changing the damping magnitude when the first elastic element 500 slides out of each groove 410 in sequence. In turn, in conjunction with the clamping element 300, the damping magnitude when the rotating shaft 100 and the bushing 200 rotate relative to each other is changed.

[0040] In one embodiment, such as Figure 5 and Figure 6 As shown, a locking screw 230 is installed on the side wall of the bushing 200. The bushing 200 is locked to the side wall of the connecting arm 800 by the locking screw 230, thereby fixing the bushing 200 and the connecting arm 800 relative to each other. The two ends of the rotating shaft 100 are a first end 110 and a second end 120, both of which extend out of the bushing 200. A retaining ring 900 is engaged on the outer peripheral wall of the first end 110. When the rotating shaft 100 is inserted into the bushing 200 with the first end 110 towards the inside of the bushing 200, one side of the retaining ring 900 can abut against the end of the bushing 200, thereby limiting the travel of the first end 110 towards the inside of the bushing 200. The outer wall of the second end 120 is provided with external threads. Figure 9As shown, the second end 120 is connected to one connecting arm 800 by an external thread, and the bushing 200 is connected to another connecting arm 800 by a locking screw 230. At the same time, under the limiting action of the retaining ring 900, the bushing 200 and the rotating shaft 100 are mutually limited in the axial direction, thereby restricting the separation of the two connecting arms 800.

[0041] The rotating shaft 100 has an axially extending channel 130 inside. Water can flow between the two connecting arms 800 of the water outlet device through the channel 130, or the water pipe of the water outlet device can be installed through the channel 130.

[0042] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] In the description of this specification, references to terms such as "some specific embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A rotary joint, characterized in that, include: Rotating shaft (100); A bushing (200) is sleeved on the rotating shaft (100). The bushing (200) has a relatively fixed clamping member (300) inside. The clamping member (300) surrounds the rotating shaft (100). The clamping member (300) has a wave surface (310). The crest (311) of the wave surface (310) abuts against the rotating shaft (100) so that the clamping member (300) applies a radial clamping force to the rotating shaft (100).

2. The rotary joint according to claim 1, characterized in that: The clamping member (300) is capable of elastic deformation in the radial direction, and the clamping member (300) tends to elastically retract in the direction of the pivot (100).

3. The rotary joint according to claim 2, characterized in that: The bushing (200) has a through-hole (210) on its side wall, which connects the inner and outer sides of the bushing (200) radially. A portion of the clamping member (300) is opposite to the through-hole (210), and the portion of the clamping member (300) opposite to the through-hole (210) is provided with the wave surface (310).

4. The rotary joint according to claim 1, characterized in that: It also includes a gear shift plate (400), which is coaxially arranged with the bushing (200) and can rotate relative to it. The gear shift plate (400) has a plurality of grooves (410) arranged in sequence along the circumference on the side near the bushing (200). The bushing (200) is provided with a first elastic element (500). When the bushing (200) and the gear shift plate (400) rotate relative to each other, the first elastic element (500) can slide into or out of each of the grooves (410) in sequence.

5. The rotary joint according to claim 4, characterized in that: The gear shift plate (400) is installed at one end of the bushing (200), and a fixing post (420) is provided on the side of the gear shift plate (400) away from the bushing (200).

6. The rotary joint according to claim 4 or 5, characterized in that: The first elastic element (500) elastically expands and contracts relative to the gear plate (400) along the axial direction of the bushing (200). There is an axial gap (430) between the bushing (200) and the gear plate (400). The two ends of the rotating shaft (100) are a first end (110) and a second end (120), respectively. Both the first end (110) and the second end (120) pass through the bushing (200). An adjusting nut (600) is provided at the end of the bushing (200) away from the gear plate (400). The adjusting nut (600) is threadedly connected to the first end (110). A second elastic element (700) is provided between the adjusting nut (600) and the bushing (200). The second elastic element (700) applies an elastic force to the bushing (200) to move it toward the gear plate (400).

7. The rotary joint according to claim 1, characterized in that: Locking screws (230) are installed on the side wall of the bushing (200). The two ends of the rotating shaft (100) are a first end (110) and a second end (120), respectively. Both the first end (110) and the second end (120) pass through the bushing (200). A retaining ring (900) is engaged on the outer peripheral wall of the first end (110). The retaining ring (900) restricts the travel of the first end (110) in the direction of moving inward to the bushing (200). The outer wall of the second end (120) is provided with external threads.

8. The rotary joint according to claim 1, characterized in that: The rotating shaft (100) has an axially extending channel (130) inside.

9. The rotary joint according to claim 1, characterized in that: The clamping component (300) is integrally injection molded in the bushing (200).

10. A water outlet device, characterized in that: It includes a rotary joint as described in any one of claims 1 to 9 and at least two connecting arms (800), the rotary joint being mounted between two connected connecting arms (800).

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