Overhead shower head that can be assembled or disassembled without a wrench

The present invention provides an overhead shower head, which needn't a wrench when assembled and disassembled, the overhead shower head comprises a shower head main body and a universal ball disposed in a ball fixing seat at the rear side of the shower head main body; wherein an abutting fitting portion is disposed between the universal ball and the ball fixing seat, when the universal ball and the ball fixing seat rotate relatively, the abutting fitting portion abuts in the rotating direction, so that the universal ball and the ball fixing seat rotate together. The assembly and disassembly of the overhead shower head of the present invention can be achieved by just rotating the shower head main body without using tools such as a wrench, the assembly is fast and convenient.

FIELD OF THE INVENTION

The present invention relates to a shower head, especially to a overhead shower head.

BACKGROUND OF THE INVENTION

Traditional overhead shower head is disposed with a universal ball that can rotate 360° with respect to the shower head main body; when assembling the overhead shower head, the shower head main body is driven to rotate to drive the universal ball to rotate, so that the universal ball is threaded and locked to the support arm. However, as the friction of the universal ball and the shower head main body is invariant, the tightening force of the universal ball and the support arm is gradually increased during the threading. When the tightening force of the universal ball and the support arm is larger than the friction of the universal ball and the shower head main body, if keeping rotating the shower head main body, the universal ball would not rotate together, so that the universal ball can not be tightly locked to the support arm, it usually needs a wrench or other tools to lock the universal ball and the support arm tightly, the assembly is inconvenient, so is the disassembly, it also needs a wrench or other tools to release the universal ball and the support arm to rotate the shower head main body to drive the universal ball to rotate together.

SUMMARY OF THE INVENTION

The present invention is provided with an overhead shower head to solve the technical problem of the existing technology, it needn't a wrench to fix the overhead shower head or detach the overhead shower head when assembling or disassembly, it is convenient and fast.

The technical proposal of the present invention is that: an overhead shower head, which needn't a wrench when assembled and disassembled, the overhead shower head comprises a shower head main body and a universal ball disposed in a ball fixing seat at the rear side of the shower head main body; wherein an abutting fitting portion is disposed between the universal ball and the ball fixing seat, when the universal ball and the ball fixing seat rotate relatively, the abutting fitting portion abuts in the rotating direction, so that the universal ball and the ball fixing seat rotate together.

In another preferred embodiment, the abutting fitting portion comprises a stop block disposed at the side surface of the universal ball and a limit slot disposed in the ball fixing seat; when the ball fixing seat and the universal ball rotate relatively, the stop block rotates in the limit slot, when the stop block moves to the end of the limit slot and abuts against the end of the limit slot, the ball fixing seat and the universal ball rotates together.

In another preferred embodiment, the limit slot is disposed in an internal periphery surface of a ratchet wheel, the external periphery of the ratchet wheel and the internal periphery of the ball fixing seat are disposed with cooperating ratchets.

In another preferred embodiment, when the overhead shower head finishes the assembling, the overhead shower head keeps on rotating, the ratchets of the ball fixing seat and the external periphery of the ratchet wheel squeeze, so that the ratchets of the external periphery of the ratchet wheel deform inwardly and then leave away from the ratchets of the external periphery of the ball fixing seat.

In another preferred embodiment, the ball fixing seat have three limit slots that are arranged with space in the internal periphery surface of the ratchet wheel; the external periphery of the limit slot is disposed with ratchets at the spaces, an elastic groove is disposed between the ratchet and the internal periphery of the limit slot.

In another preferred embodiment, the central angle of the limit slot is 110°.

In another preferred embodiment, one end of the universal ball extends out of the ball fixing seat, the extending end is disposed with internal thread to connect to a support arm and a screen spacer.

In another preferred embodiment, a nut is further provided, the external periphery of the side surface of the ball fixing seat is disposed with thread coupling to the nut.

In another preferred embodiment, the top portion of the nut is disposed with an opening, the extending end of the universal ball extends out of the ball fixing seat through the opening.

In another preferred embodiment, the ball fixing seat is disposed with a sealing ring coupling to the universal ball.

Compared to the existing known technology, the technical proposal of the present invention has advantages as follow:

1. the overhead shower head that can be assembled and disassembled without a wrench of the present invention is provided that an abutting fitting portion is disposed between the universal ball and the ball fixing seat, when the universal ball and the ball fixing seat rotate relatively, the abutting fitting portion abuts to make the universal ball and the ball fixing seat rotate together, so that the assembly and disassembly can be achieved by just rotating the shower head main body without using tools such as a wrench, the assembly is fast and convenient.
2. ratchets are disposed at the external periphery of the limit slot and the internal periphery of the ball fixing seat, when the shower head main body rotates, the ball fixing seat drives the limit slot to rotate, when the stop block at the side of the ball fixing seat abuts against the end of the limit slot, the universal ball rotates with the ball fixing seat, so that the internal thread at the end of the ball is coupled to the external thread of the end of the support arm, the shower head main body is then assembled to the end of the support arm.
3. when the torsion force of the internal thread of the end of the ball and the external thread of the end of the support arm reaches to the preset value, the overhead shower head main body is assembled to the support arm, if the user keeps on rotating the shower head main body, the ratchets of the ball fixing seat and the external periphery of the ratchet wheel squeeze, so that the ratchets of the external periphery of the ratchet wheel deform inwardly and then leave away from the ratchets of the external periphery of the ball fixing seat. The ratchet wheel can rotate with respect to the ball fixing seat, the staggered ratchets makes takh-takh sound to alarm user that the assembly is finished.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The First Embodiment

Referring toFIGS. 1˜4, the overhead shower head that can be assembled and disassembled without a wrench comprises a shower head main body1and a universal ball2disposed in a ball fixing seat11at the rear side of the shower head main body1; an abutting fitting portion is disposed between the universal ball2and the ball fixing seat11, when the ball fitting set11and the universal ball2rotate relatively, the abutting fitting portion abuts in the rotating direction, so that the universal ball2and the ball fixing seat11rotate together.

In this embodiment, the abutting fitting portion comprises a stop block21disposed at the side surface of the universal ball2and a limit slot111disposed in the ball fixing seat11; when the ball fixing seat11and the universal ball2rotate relatively, the stop block21rotates in the limit slot111, when the stop block21moves to the end of the limit slot and abuts against the end of the limit slot111, the ball fixing seat11and the universal ball2rotates together.

One end of the universal ball2extends out of the ball fixing seat11, the extending end is disposed with internal thread22to connect to a support arm and a screen spacer23.

Referring toFIG. 5, the overhead shower head of the present invention has the assembling process as follows: directing the thread22to the support arm, holding the edge of the shower head main body1with a hand to rotate the shower head main body1in the counter-clockwise direction, so that the main body1drives the universal ball2to rotate together, the thread22is threaded to the support arm. When the tightening force of the thread22and the support arm is larger than the friction force of the universal ball2and the ball fixing seat11, the thread22can not rotate anymore. At this time, if keeping on rotating the shower head main body1in counter-clockwise direction, the shower head main body1and the universal ball2rotate relatively, the stop block21and the limit slot111also rotate relatively, when the stop block21moves to the end of the limit slot111and abuts against the end of the limit slot111, keeping on rotating the shower head main body1, under the action of the abutting force, the shower head main body1drives the universal ball2to rotate, so that the thread22is tightly threaded to the support arm.

Referring toFIG. 6, the overhead shower head of the present invention has the disassembly process as follow: holding the edge of the shower head main body1to rotate the shower head main body1in clockwise direction, as the tightening force of the thread22and the support arm is larger than the friction force of the universal ball2and the ball fixing seat11, the universal ball2and the shower head main body1rotate relatively, the stop block21and the limit slot111also rotate relatively, when the stop block21moves the end of the limit slot111and abuts against the end of the limit slot111, keeping on rotating the shower head main body1, under the work of the abutting force, the shower head main body1can drive the universal ball2to rotate together, so that the thread22is unlocked to the support arm to finish the disassembling.

As can be seen from above, the overhead shower head that can be assembled and disassembled without a wrench is provided that the assembly and disassembly can be achieved by just rotating the shower head main body without any tools such as a wrench, the assembly is quick and convenient.

The present invention can be preferred configured:

The limit slot111is an annular arc slot, the central angle is arranged of 1°˜360°. In this embodiment, it is 110°. The relative rotation angle of the universal ball2and the ball fixing seat11is arranged of 1°˜360°, it would not be limited to the rotation angle of the universal ball due to the configuration of the abutting fitting portion.

Therefore, it can keep the whole functions of the existing overhead shower heads.

The overhead shower head further comprises a nut12, the external periphery of the side surface of the ball fixing seat11is disposed with thread112coupled to the nut. The top portion of the nut12is disposed with an opening121, the extending end of the universal ball2extends out of the ball fixing seat11through the opening121. A bush13is disposed between the opening121and the universal ball. The universal ball set11is disposed with a sealing ring14coupled to the universal ball2.

The Second Embodiment

Referring to theFIGS. 7˜9, this embodiment differs from the first embodiment in that:

This embodiment comprises three limit slots111, they are arranged with space at the internal periphery surface of the ratchet wheel15, the external periphery of the ratchet wheel15is disposed with ratchets113,151at the spaces coupled to the internal periphery of the ball fixing seat11. And an elastic groove152is disposed between the ratchet151at the external periphery of the ratchet wheel15and the internal periphery of the ratchet wheel15.

The assembling process of the overhead shower head of this embodiment is that: directing the thread22to the support arm, holding the edge of the shower head main body1with a hand to rotate the shower head main body1in the counter-clockwise direction, so that the main body1drives the universal ball2to rotate together, the thread22is threaded to the support arm. When the tightening force of the thread22and the support arm is larger than the friction force of the universal ball2and the internal periphery of the ratchet wheel15, the thread22can not rotate any more. At this time, if keeping on rotating the shower head main body1in counter-clockwise direction, the shower head main body1and the universal ball2rotate relatively, the stop block21and the limit slot111also rotate relatively, when the stop block21moves to the end of the limit slot111and abuts against the end of the limit slot111, keeping on rotating the shower head main body1, under the action of the abutting force, the shower head main body1drives the universal ball2to rotate, so that the thread22is tightly threaded to the support arm. When the thread22is tightly threaded to the support arm, keeping on rotating the shower head main body1, as the friction of the thread22and the support arm is larger than the occlusive force of the ratchets113,151of the external periphery of the ratchet wheel15and the internal periphery of the ball fixing seat11, the ball fixing seat and ratchet151of the external periphery of the ratchet wheel15squeeze, so that the ratchets of the external periphery of the ratchet wheel15deform towards the elastic groove152and then leave away from the ratchet113of the external periphery of the ball fixing seat11. The ratchet wheel15can rotate with respect to the ball fixing seat11, the staggered ratchets113,151make takh-takh sound to alarm user that the assembly is finished. Although the present invention has been described with reference to the preferred embodiments thereof for carrying out the patent for invention, it is apparent to those skilled in the art that a variety of modifications and changes may be made without departing from the scope of the patent for invention which is intended to be defined by the appended claims.