Water outlet device and ball joint thereof

Abstract

The utility model provides a water outlet device and ball head connecting piece thereof, including plastic body and metal shell, the plastic body includes the inside flow channel of axial penetration, the axial both ends of plastic body form ball head part and threaded connection part respectively, the inside of threaded connection part includes the internal thread of forming on inside flow channel, the metal shell is correspondingly clamped in the outside of threaded connection part to correspond to internal thread. Ball head connecting piece is through the metal shell of clamping in the outside of threaded connection part, can play the effect of preventing threaded connection part to rise and crack in the threaded connection process when the internal thread of threaded connection part is screwed, strengthens the use intensity of internal thread and threaded connection part of ball head connecting piece.

Description

Technical Field

[0001] This utility model relates to a water outlet device and its ball head connector. Background Technology

[0002] Currently, the commonly available plastic ball joints (or universal ball joints) are key components connecting shower heads to water supply pipes. Their basic structure typically includes a ball head for connecting the shower head and a threaded connection for connecting the water pipe. This design aims to provide flexibility in adjusting the shower head angle. However, this structure has a significant reliability flaw: the threaded connection, as a critical node for load-bearing and sealing, is generally made of injection-molded plastic (such as PP or ABS). While plastic materials offer advantages in cost and ease of processing, their inherent mechanical limitations, particularly insufficient tensile strength, shear strength, and toughness, become a bottleneck. During installation, when the threaded connection is tightened to the water pipe interface (usually metal), the plastic threads are highly susceptible to localized stress concentration due to excessive installation torque, the sharp edges of the metal threads, or even slight misalignment during installation. This directly leads to cracking or even complete breakage of the thread root or tip. Once such structural damage occurs in the threaded connection, it not only immediately causes connection failure and renders the device unusable but also results in water leakage. More importantly, since the threaded connection and the ball head are usually injection molded as a single unit, damage to the threaded connection often means the entire plastic ball head component is completely unusable and cannot be repaired locally. This overall failure problem caused by the fragility of the threaded connection not only reduces the product's lifespan and user experience, but also increases the replacement cost and inconvenience for consumers, and even poses safety hazards, becoming a pain point that existing plastic ball head technology urgently needs to address. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a ball joint connector that can enhance the strength of the threaded connection.

[0004] To solve the above-mentioned technical problems, this utility model provides a ball head connector for a water outlet device, including a plastic body and a metal shell; the plastic body includes an internal flow channel that extends axially, and the two ends of the plastic body respectively form a ball head and a threaded connection portion, the inner side of the threaded connection portion includes an internal thread formed on the internal flow channel; the metal shell is correspondingly clamped to the outer side of the threaded connection portion to correspond to the internal thread.

[0005] In a preferred embodiment, a first joint is formed on the inner side of the metal housing, and a second joint is formed on the outer side of the threaded connection. The first and second joints are connected to restrict circumferential rotation of the metal housing relative to the threaded connection.

[0006] In a preferred embodiment, the first joint is a plurality of axial ribs formed on the inner side of the metal housing; the second joint is a plurality of axial grooves formed on the outer side of the threaded connection, wherein the plurality of axial ribs are respectively fitted into the plurality of axial grooves.

[0007] In a preferred embodiment, the metal housing extends radially inward at both ends along the axial direction to form a first end face annular wall and a second end face annular wall, which are respectively disposed at both ends of the threaded connection to restrict the axial movement of the metal housing relative to the threaded connection.

[0008] In a preferred embodiment, the metal housing is fitted onto the outside of the threaded connection by riveting or insert injection molding.

[0009] This utility model also provides a water outlet device, including a water outlet body and the ball head connector; the water outlet body is rotatably connected to the ball head, and the water outlet body is in fluid communication with the internal flow channel.

[0010] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0011] A ball-head connector for a water outlet device includes a plastic body and a metal outer shell. The plastic body includes an axially extending internal flow channel, and a ball head and a threaded connection portion are formed at both axial ends of the plastic body, respectively. The inner side of the threaded connection portion includes an internal thread formed on the internal flow channel. The metal outer shell is correspondingly clamped to the outer side of the threaded connection portion to correspond to the internal thread. The ball-head connector, through the metal outer shell clamped to the outer side of the threaded connection portion, can prevent the threaded connection portion from cracking during the threading process when screwed into the internal thread. Attached Figure Description

[0012] Figure 1 This is a perspective view of the ball joint connector in a preferred embodiment of the present invention;

[0013] Figure 2 This is an exploded view of the ball joint connector in a preferred embodiment of the present invention;

[0014] Figure 3 This is a cross-sectional view of the ball joint connector in a preferred embodiment of the present invention;

[0015] Figure 4 This is an exploded view of the ball head connector and the overhead shower head in a preferred embodiment of this utility model;

[0016] Figure 5 This is an exploded view of the ball head connector and the shower head in a preferred embodiment of this utility model;

[0017] Figure 6 This is an exploded view of the ball-head connector and the ball-head wall seat in a preferred embodiment of the present invention. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] See Figures 1-3 A ball-head connector 10 for a water outlet device includes a plastic body 1 and a metal outer shell 2. The plastic body 1 includes an axially penetrating internal flow channel 11. A ball head 12 and a threaded connection portion 13 are formed at both axial ends of the plastic body 1. The inner side of the threaded connection portion 13 includes an internal thread 131 formed on the internal flow channel 11. The metal outer shell 2 is correspondingly clamped to the outer side of the threaded connection portion 13 to correspond to the internal thread 131. The ball-head connector 10, through the metal outer shell 2 clamped to the outer side of the threaded connection portion 13, can prevent the threaded connection portion 13 from cracking when screwed onto the internal thread 131.

[0020] In this embodiment, a first connecting portion 21 is formed on the inner side of the metal casing 2, and a second connecting portion 14 is formed on the outer side of the threaded connection portion 13. The first connecting portion 21 and the second connecting portion 14 are connected to restrict the circumferential rotation of the metal casing 2 relative to the threaded connection portion 13. The first connecting portion 21 consists of a plurality of axial ribs formed on the inner side of the metal casing 2; the second connecting portion 14 consists of a plurality of axial grooves formed on the outer side of the threaded connection portion 13, and the plurality of axial ribs are respectively fitted into the plurality of axial grooves.

[0021] In this embodiment, the metal shell 2 extends radially inward at both ends along the axial direction to form a first end face annular wall 22 and a second end face annular wall 23. The first end face annular wall 22 and the second end face annular wall 23 are respectively disposed at both ends of the threaded connection portion 13 to restrict the axial movement of the metal shell 2 relative to the threaded connection.

[0022] In this embodiment, the metal outer shell 2 is attached to the outside of the threaded connection portion 13 by riveting or insert injection molding.

[0023] This utility model also provides a water outlet device, including a water outlet body and a ball-head connector 10 of the aforementioned water outlet device; the water outlet body is rotatably connected to the ball head 12, the water outlet body is in fluid communication with the internal flow channel 11, and the internal thread 131 is threadedly connected to a water pipe 20. (See also...) Figure 4 The water outlet body is a top spray shower head 30; see reference. Figure 5 The water outlet body is a shower head 40; see reference. Figure 6 The water outlet body is a ball-shaped wall seat 50.

[0024] The above description is only a preferred embodiment of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantial modifications made to the present utility model by those skilled in the art within the scope of the technology disclosed in the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. A ball joint connector for a water outlet device, characterized in that, It includes a plastic body and a metal shell; the plastic body includes an internal flow channel that extends axially, and the two ends of the plastic body respectively form a ball head and a threaded connection portion, the inner side of the threaded connection portion includes an internal thread formed on the internal flow channel; the metal shell is correspondingly clamped on the outer side of the threaded connection portion to correspond to the internal thread.

2. The ball joint connector of the water outlet device as described in claim 1, characterized in that: A first joint is formed on the inner side of the metal casing, and a second joint is formed on the outer side of the threaded connection. The first joint and the second joint are connected to restrict the circumferential rotation of the metal casing relative to the threaded connection.

3. The ball joint connector of the water outlet device as described in claim 2, characterized in that: The first joint is a plurality of axial ribs formed on the inner side of the metal shell; the second joint is a plurality of axial grooves formed on the outer side of the threaded connection, and the plurality of axial ribs are respectively fitted into the plurality of axial grooves.

4. The ball joint connector of the water outlet device as described in claim 1, characterized in that: The metal shell extends radially inward from both ends along the axial direction to form a first end face annular wall and a second end face annular wall. The first end face annular wall and the second end face annular wall are respectively disposed at both ends of the threaded connection to restrict the axial movement of the metal shell relative to the threaded connection.

5. The ball joint connector of the water outlet device as described in claim 1, characterized in that: The metal casing is attached to the outside of the threaded connection by riveting or insert injection molding.

6. A water outlet device, characterized in that, It includes a water outlet body and a ball head connector of a water outlet device as described in any one of claims 1-5; the water outlet body is rotatably connected to the ball head, and the water outlet body is in fluid communication with the internal flow channel.

7. A water outlet device as described in claim 6, characterized in that: The water outlet body is a top spray shower head, a shower head, or a ball head wall mount.

8. A water outlet device as described in claim 6, characterized in that: The internal thread is screwed to a water pipe.

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