An improved rotary joint

Abstract

The utility model provides a kind of improved rotary joint, including joint body, rotating sleeve and sealing element, the sealing element and rotating sleeve are sequentially sleeved and rotated on joint body from top to bottom, the lower side of the joint body is equipped with the limiting flange for being used to limit installation rotating sleeve below rotating sleeve, the middle part of the joint body is equipped with the annular clamping groove that is recessed radially inward, the upper side of the rotating sleeve is equipped with the limiting buckle that is extended radially inward for being used to clamp into annular clamping groove to prevent rotating sleeve from coming out of joint body.The utility model forms limiting buckle directly on rotating sleeve, by clamping limiting buckle into the annular clamping groove of joint body, to limit installation rotating sleeve, prevent rotating sleeve from coming out of joint body.

Description

Technical Field

[0001] This utility model relates to the field of faucet technology, specifically to an improved rotary joint. Background Technology

[0002] Existing faucet rotary joints typically use a retaining ring to limit the installation of the sealing element and the rotating sleeve, preventing them from detaching from the joint. These retaining rings are often C-shaped retainers, which have a single function and require lateral pressure during installation, making them unsuitable for automated production. Furthermore, their structure is relatively complex, often including internal and external seals. For example, Chinese Utility Model Patent 201921910039.1 discloses a simplified assembly faucet rotary joint including an inner core, a rotating sleeve, and a retaining ring. An external sealing ring is fitted onto the rotating sleeve, and an internal sealing ring is fitted onto the inner core. The outer wall of the rotating sleeve has an external sealing groove for installing the external sealing ring, and the inner wall of the rotating sleeve has an internal sealing groove for installing the internal sealing ring. The external and internal sealing grooves are offset axially from each other on the rotating sleeve. This structure not only involves many components and is complex, but its assembly is also more complicated.

[0003] In view of this, the inventor conducted in-depth research on the aforementioned deficiencies in the prior art, which led to the creation of this case. Summary of the Invention

[0004] The purpose of this utility model is to address the above-mentioned shortcomings by providing an improved rotary joint that is simple in structure, easy to assemble, and has good sealing performance.

[0005] To achieve the above objectives, the solution adopted by this utility model to solve the technical problem is: an improved rotary joint, comprising a joint body, a rotary sleeve, and a sealing element. The sealing element and the rotary sleeve are rotatably mounted on the joint body from top to bottom. The lower side of the joint body is provided with a limiting flange located below the rotary sleeve for limiting the installation of the rotary sleeve. The middle part of the joint body is provided with a radially inwardly recessed annular groove. The upper side of the rotary sleeve is provided with a limiting buckle extending radially inwardly for engaging in the annular groove to prevent the rotary sleeve from dislodging from the joint body. The upper part of the joint body is provided with a radially inwardly recessed limiting groove. The middle part of the sealing element is provided with a limiting ring protruding radially inwardly for engaging in the limiting groove to prevent the sealing element from dislodging from the joint body.

[0006] Furthermore, to ensure that the limiting buckle engages within the annular groove and prevents the rotating sleeve from dislodging from the connector body, the distance between the inner end face of the limiting buckle and the axis of the rotating sleeve is less than the radius of the connector body, and the distance between the inner end face of the limiting buckle and the axis of the rotating sleeve is greater than the radius of the annular groove.

[0007] Furthermore, to ensure that the limiting buckle is elastic and can deform slightly, the upper side of the rotating sleeve is provided with a radially inwardly extending annular flange, the annular flange is provided with several notches, and several limiting buckles are provided accordingly. Each limiting buckle is respectively located in each notch, and there is a gap between the limiting buckle and the two sides of the notch to ensure that the limiting buckle is elastic.

[0008] Furthermore, to ensure that the limiting buckle can lock upwards and pass over the limiting groove downwards to smoothly engage in the annular groove, the limiting buckle includes a spring piece connected to the rotating sleeve and a wedge-shaped buckle portion located at the end of the spring piece. The spring piece extends radially inwards from the bottom of the notch, and the upper end surface of the wedge-shaped buckle portion is flat to cooperate with the upper end surface of the annular groove to prevent the rotating sleeve from coming out of the connector body. The lower side of the wedge-shaped buckle portion is an inclined surface extending outwards from top to bottom so that the wedge-shaped buckle portion can disengage downwards from the limiting groove when the rotating sleeve is put into the connector body.

[0009] Furthermore, in order to fit and install the rotating sleeve with the connector body, the rotating sleeve has several radially inwardly protruding axial ribs located below the annular flange, and the distance between the end face of the axial ribs and the centerline of the rotating sleeve is adapted to the radius of the connector body.

[0010] Furthermore, to achieve the function of indicating the rotation position of the connector, the improved rotary connector also includes a position indication component. The position indication component includes a position ring, a spring, and a spring pin. The position ring is located between the rotating sleeve and the connector body. The rotating sleeve has a spring post for installing the spring. The upper side of the spring is sleeved on the spring post. The spring pin is movably inserted through the lower side of the spring post. The upper end face of the position ring has a plurality of position holes evenly distributed in a ring. The lower side of the spring pin has a conical head for making hard contact with the position holes to generate a sound. The position holes are correspondingly inverted conical.

[0011] Furthermore, in order to constrain the rotation of the gear ring, a polygonal shaft portion is provided on the connector body above the limiting flange, and a polygonal hole is provided on the gear ring that is adapted to the shape of the polygonal shaft portion. The polygonal hole is fitted onto the polygonal shaft portion to lock the rotation of the gear ring.

[0012] Furthermore, for the purpose of installing the connector, the bottom of the connector body is provided with an external thread for connecting an external nut, and the upper end of the connector body is also provided with a hexagonal hole coaxial with the connector body for driving the connector body to rotate the external nut.

[0013] Furthermore, in order to position and install the water outlet pipe, a positioning hole is radially opened on the rotating sleeve, a positioning element is provided on the positioning hole, and several rotating protrusions are evenly distributed on the outer side wall of the rotating sleeve.

[0014] Furthermore, in order to limit the installation of the seal on the connector body, the seal is provided with a through hole for passing through the connector body, the diameter of the limiting retaining ring is smaller than the diameter of the through hole, and the outer surface of the seal is formed with a plurality of annular lips from top to bottom.

[0015] Compared with the prior art, this utility model has the following advantages: This utility model directly forms a limiting buckle on the rotating sleeve. By fastening the limiting buckle into the annular groove of the connector body, the rotating sleeve is limited and installed, preventing the rotating sleeve from falling out of the connector body. At the same time, a limiting ring is integrally formed on the sealing element. Through the abutting cooperation between the limiting ring and the limiting groove, the sealing element is limited and installed. Traditional rotary joints use a limiting ring to limit the installation of the sealing element and the rotating sleeve. Because the limiting ring needs to bear the axial movement of both the sealing element and the rotating sleeve at the same time, the axial load of the limiting ring is large. In this utility model, the rotating sleeve itself is limited by the limiting buckle, and the sealing element only needs to bear its own axial force, resulting in less load and higher structural stability. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of the structure of this utility model; Figure 3 This is a cross-sectional view of the structure of the present invention. Figure 1 ; Figure 4 This is a cross-sectional view of the structure of the present invention. Figure 2 ; Figure 5 This is a schematic diagram of the rotating sleeve. Figure 6 This is a bottom view of the rotating sleeve structure.

[0017] In the figure: 1. Connector body; 101. Limiting flange; 102. Annular groove; 103. Polygonal shaft 104; Shaft hole 105; External thread 106; Rotating sleeve 2; Limiting buckle 201; 202. Annular flange; 203. Axial rib 203; Spring post 204; Mounting hole 205; Positioning hole 206; Notch 207; Seal 3; Limiting ring 301; Annular lip 302; Through hole 303; Spring 4; Spring pin 5; Positioning element 6; Stop ring 7; Stop hole 701. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments: Example: Figure 1-6As shown, this embodiment provides an improved rotary joint, including a joint body 1, a rotating sleeve 2, and a sealing element 3. The joint body 1 has an axially penetrating shaft hole 105. The sealing element 3 and the rotating sleeve 2 are rotatably fitted onto the joint body 1 from top to bottom. The rotating sleeve 2 has an axially penetrating mounting hole 205. The sealing element 3 has an axially penetrating through hole 303. The lower side of the joint body 1 has a positioning and rotating part located below the rotating sleeve 2 for limiting the installation. The sleeve 2 has a limiting flange 101. The middle part of the connector body 1 is provided with a radially inwardly recessed annular groove 102. The upper side of the rotating sleeve 2 is provided with a radially inwardly extending limiting buckle 201 for engaging in the annular groove 102 to prevent the rotating sleeve 2 from falling out of the connector body 1. The upper part of the connector body 1 is provided with a radially inwardly recessed limiting groove 103. The middle part of the sealing member 3 is provided with a radially inwardly protruding limiting ring 301 for engaging in the limiting groove 103 to prevent the sealing member 3 from falling out of the connector body 1.

[0019] In this embodiment, in order to ensure that the limiting buckle 201 is engaged in the annular groove 102 to prevent the rotating sleeve 2 from coming off the connector body 1, the distance between the inner end face of the limiting buckle 201 and the axis of the rotating sleeve 2 is less than the radius of the connector body 1, and the distance between the inner end face of the limiting buckle 201 and the axis of the rotating sleeve 2 is greater than the radius of the annular groove 102.

[0020] In this embodiment, in order to ensure that the limiting buckle 201 is elastic and can deform slightly, the upper side of the rotating sleeve 2 is provided with a radially inwardly extending annular flange 202, the annular flange 202 is provided with a plurality of notches 207, and the limiting buckle 201 is provided with a plurality of corresponding notches 207, each limiting buckle 201 being disposed in each notch 207, and there is a gap between the limiting buckle 201 and the two sides of the notch 207 to ensure that the limiting buckle 201 is elastic.

[0021] In this embodiment, to ensure that the limiting buckle 201 can lock upwards and pass over the limiting groove 103 downwards to smoothly engage in the annular groove 102, the limiting buckle 201 includes a spring piece connected to the rotating sleeve 2 and a wedge-shaped buckle portion provided at the end of the spring piece. The spring piece extends radially inwards from the bottom of the notch 207. The upper end surface of the wedge-shaped buckle portion is a plane so as to cooperate with the upper end surface of the annular groove 102 to prevent the rotating sleeve 2 from falling out of the connector body 1. The lower side of the wedge-shaped buckle portion is an inclined surface that extends outwards from top to bottom so that the wedge-shaped buckle portion can disengage downwards from the limiting groove 103 when the rotating sleeve 2 is put into the connector body 1.

[0022] In this embodiment, in order to fit and install the rotating sleeve 2 with the connector body 1, a plurality of radially inwardly protruding axial ribs 203 are provided inside the rotating sleeve 2 below the annular flange 202, and the distance between the end face of the axial ribs 203 and the axis of the rotating sleeve 2 is adapted to the radius of the connector body 1.

[0023] In this embodiment, to achieve the function of indicating the rotation position of the joint, the improved rotary joint further includes a position indication component, which includes a position ring 7, a spring 4, and a spring pin 5. The position ring 7 is located between the rotary sleeve 2 and the joint body 1, and is located below the axial rib 203. The rotary sleeve 2 is provided with a spring post 204 for installing the spring 4. The spring post 204 is located inside the axial rib 203. The upper side of the spring 4 is sleeved on the spring post 204. The spring pin 5 is movably inserted through the lower side of the spring post 204. The upper end face of the position ring 7 is evenly distributed with several position holes 701. The lower side of the spring pin 5 is provided with a conical head for hard contact with the position holes 701 to produce a sound. The position holes 701 are correspondingly inverted conical.

[0024] In this embodiment, in order to constrain the rotation of the gear ring 7, a polygonal shaft portion 104 is provided on the connector body 1 above the limiting flange 101. The gear ring 7 is provided with a polygonal hole that is adapted to the shape of the polygonal shaft portion 104. The polygonal hole is fitted on the polygonal shaft portion 104 to lock the rotation of the gear ring 7.

[0025] In this embodiment, in order to install the connector, the bottom of the connector body 1 is provided with an external thread 106 for connecting an external nut, and the upper end of the connector body 1 is also provided with a hexagonal hole coaxial with the shaft hole 105 for driving the connector body 1 to rotate the external nut.

[0026] In this embodiment, in order to position and install the water outlet pipe, a positioning hole 206 is radially opened on the rotating sleeve 2, a positioning element 6 is provided on the positioning hole 206, and several rotating protrusions are evenly distributed on the outer side wall of the rotating sleeve 2.

[0027] In this embodiment, in order to limit the installation of the sealing element 3 on the connector body 1, the sealing element 3 is provided with a through hole 303 for passing through the connector body 1, the diameter of the limiting retaining ring 301 is smaller than the diameter of the through hole 303, and the outer side of the sealing element 3 is formed with a plurality of annular lips 302 from top to bottom, the annular lips 302 having a wedge-shaped structure for inserting into the outer tube.

[0028] This invention directly forms a limiting buckle 201 on the rotating sleeve 2. By fastening the limiting buckle 201 into the annular groove 102 of the connector body 1, the rotating sleeve 2 is limited and installed, preventing the rotating sleeve 2 from falling out of the connector body 1. At the same time, a limiting ring 301 is integrally formed on the sealing element 3. Through the abutting cooperation between the limiting ring 301 and the limiting groove 103, the sealing element 3 is limited and installed. Traditional rotary joints use a limiting ring to limit the installation of the sealing element 3 and the rotating sleeve 2. Because the limiting ring needs to bear the axial movement of the sealing element 3 and the rotating sleeve 2 at the same time, the axial load of the limiting ring is large. In this invention, the rotating sleeve 2 itself is limited by the limiting buckle 201, and the sealing element 3 only needs to bear its own axial force, resulting in less load and higher structural stability.

[0029] The above description is merely an embodiment of this utility model and does not limit the scope of patent protection of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this utility model.

Claims

1. An improved rotary joint, characterized in that: The device includes a connector body, a rotating sleeve, and a seal. The seal and the rotating sleeve are rotatably mounted on the connector body from top to bottom. The lower side of the connector body has a limiting flange located below the rotating sleeve for limiting the installation of the rotating sleeve. The middle part of the connector body has a radially inwardly recessed annular groove. The upper side of the rotating sleeve has a limiting buckle extending radially inward for engaging in the annular groove to prevent the rotating sleeve from dislodging from the connector body. The upper part of the connector body has a radially inwardly recessed limiting groove. The middle part of the seal has a limiting ring protruding radially inward for engaging in the limiting groove to prevent the seal from dislodging from the connector body.

2. The improved rotary joint according to claim 1, characterized in that: The distance between the inner end face of the limiting buckle and the center line of the rotating sleeve is less than the radius of the connector body, and the distance between the inner end face of the limiting buckle and the center line of the rotating sleeve is greater than the radius of the annular groove.

3. The improved rotary joint according to claim 1, characterized in that: The upper side of the rotating sleeve is provided with an annular flange extending radially inward. The annular flange is provided with several notches, and several corresponding limiting buckles are provided. Each limiting buckle is located in a notch, and there is a gap between the limiting buckle and the two sides of the notch to ensure that the limiting buckle is elastic.

4. The improved rotary joint according to claim 3, characterized in that: The limiting buckle includes a spring piece connected to the rotating sleeve and a wedge-shaped buckle at the end of the spring piece. The spring piece extends radially inward from the bottom of the notch. The upper surface of the wedge-shaped buckle is a flat surface so as to cooperate with the upper surface of the annular groove to prevent the rotating sleeve from coming out of the connector body. The lower side of the wedge-shaped buckle is an inclined surface that extends outward from top to bottom so that the wedge-shaped buckle can disengage downward from the limiting groove when the rotating sleeve is put into the connector body.

5. The improved rotary joint according to claim 3, characterized in that: The rotating sleeve has several radially inwardly protruding axial ribs located below the annular flange. The distance between the end face of the axial ribs and the centerline of the rotating sleeve is adapted to the radius of the joint body.

6. The improved rotary joint according to claim 1, characterized in that: The improved rotary joint also includes a gear position indicator component, which includes a gear position ring, a spring, and a spring pin. The gear position ring is located between the rotary sleeve and the joint body. The rotary sleeve has a spring post for installing the spring. The upper side of the spring is sleeved on the spring post. The spring pin is movably inserted through the lower side of the spring post. The upper end face of the gear position ring has a plurality of gear position holes evenly distributed in a ring. The lower side of the spring pin has a conical head for hard contact with the gear position holes to produce a sound. The gear position holes are correspondingly inverted conical.

7. The improved rotary joint according to claim 6, characterized in that: The connector body is provided with a polygonal shaft portion above the limiting flange, and the stop ring is provided with a polygonal hole that matches the shape of the polygonal shaft portion. The polygonal hole is fitted onto the polygonal shaft portion to lock the rotation of the stop ring.

8. The improved rotary joint according to claim 1, characterized in that: The bottom of the connector body is provided with an external thread for connecting an external nut, and the upper end of the connector body is also provided with a hexagonal hole coaxial with the connector body for driving the connector body to rotate and connecting the external nut.

9. The improved rotary joint according to claim 1, characterized in that: The rotating sleeve has a radially opening positioning hole, and a positioning element is provided in the positioning hole. Several rotating protrusions are also evenly distributed on the outer side wall of the rotating sleeve.

10. The improved rotary joint according to claim 1, characterized in that: The sealing element has a through hole for the connector body to pass through, the diameter of the limiting ring is smaller than the diameter of the through hole, and the outer side of the sealing element has a number of annular lips formed from top to bottom.

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