COUPLING STRUCTURE OF SPRAY HEAD AND CONNECTOR OF WATER SPRAY GUN

Abstract

A coupling structure of a spray head and a connector of a water spray gun is provided. An outer wall of the connector is provided with a positioning flange. The rear end of the spray head is provided with a stop plate. The rear end of the spray head is provided with a positioning rim. When the connector is inserted into the accommodation space of the spray head, the stop plate is secured in the positioning rim and connected with the rear end of the spray head. The stop plate has an annular area to get contact with the positioning flange provided on the outer wall of the connector, such that the spray head and the connector are assembled to become one-piece. The size of the spray head is reduced, so it is light and cost-effective. The water spray gun is able to provide different spray modes.

Claims

1. A coupling structure of a spray head and a connector of a water spray gun, a front end of the spray head being connected with a circular plate, a central portion of the circular plate being provided with a plurality of spray holes which are arranged circularly and provide different spray modes, a rear side of the circular plate being formed with positioning recesses disposed at an outer side of each spray hole, a rear end of the spray head being formed with an accommodation space therein; a front section of the connector being inserted from the rear end of the spray head into the accommodation space, the connector having a water channel space therein for communicating with a water source, a front end of the connector having a water outlet and a positioning hole, the water outlet being sleeved with an elastic O-shaped sealing ring and in communication with the water channel space, the positioning hole being configured to receive a positioning pin, the positioning pin being engaged in one of the positioning recesses at the rear side of the spray head, enabling the spray head to be rotated for adjustment, one of the spray holes arranged at the central portion of the circular plate of the spray head being aligned with the water outlet of the connector and in contact with the elastic O-shaped sealing ring so as to guide water to spray out through the spray hole of the spray head; and characterized by: an outer wall of the connector being provided with a positioning flange, the rear end of the spray head being provided with a stop plate, wherein when the connector is inserted into the accommodation space at the rear end of the spray head, the stop plate is connected with the rear end of the spray head, and the stop plate has an annular area to get contact with the positioning flange provided on the outer wall of the connector, such that the spray head and the connector are assembled to become one-piece.

2. The coupling structure of a spray head and a connector of a water spray gun as claimed in claim 1, wherein the rear end of the spray head is further provided with a positioning rim, wherein when the connector is inserted into the accommodation space at the rear end of the spray head, the stop plate is secured in the positioning rim and connected with the rear end of the spray head.

3. The coupling structure of a spray head and a connector of a water spray gun as claimed in claim 1, wherein the stop plate is connected to the rear end of the spray head by ultrasonic, adhesive or a locking member.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG. 1 is an exploded view of a coupling structure of a spray head and a connector of a water spray gun of the present invention;

[0016] FIG. 2 is a perspective view of FIG. 1;

[0017] FIG. 3 is an exploded view of the present invention seen from another angle;

[0018] FIG. 4 is a perspective view of FIG. 3;

[0019] FIG. 5 is a schematic view of the present invention when in use; and

[0020] FIG. 6 is a partially enlarged sectional view of FIG. 5.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings.

[0022] As shown in FIG. 1 through FIG. 6, the present invention discloses a coupling structure of a spray head 3 and a connector 4 of a water spray gun. A front end of the spray head 3 is connected with a circular plate 31. A central portion of the circular plate 31 is provided with a plurality of spray holes 32 which are arranged circularly and provide different spray modes. A rear side of the circular plate 31 is formed with positioning recesses 33 disposed at an outer side of each spray hole 32. A rear end of the spray head 3 is formed with an accommodation space 34 therein.

[0023] A front section of the connector 4 is inserted from the rear end of the spray head 3 into the accommodation space 34. The connector 4 has a water channel space 41 therein for communicating with a water source. A front end of the connector 4 has a water outlet 43 and a positioning hole 45. The water outlet 43 is sleeved with an elastic O-shaped sealing ring 42 and in communication with the water channel space 41. The positioning hole 45 is configured to receive a positioning pin 44. The positioning pin 44 is engaged in one of the positioning recesses 33 at the rear side of the spray head 3, enabling the spray head 3 to be rotated for adjustment. One of the spray holes 32 arranged at the central portion of the circular plate 31 is aligned with the water outlet 43 of the connector 4 and in contact with the elastic O-shaped sealing ring 42 so as to guide the water to spray out through the spray hole 32 of the spray head 3.

[0024] The present invention is characterized in that: an outer wall of the connector 4 is provided with a positioning flange 46. The rear end of the spray head 3 is provided with a stop plate 5. The rear end of the spray head 3 is further provided with a positioning rim 35. When the connector 4 is inserted into the accommodation space 34 at the rear end of the spray head 3, the stop plate 5 is secured in the positioning rim 35 and connected with the rear end of the spray head 3. (For example, the stop plate 5 is connected to the spray head 3 by ultrasonic, adhesive or a locking member.) The stop plate 5 has an annular area to get contact with the positioning flange 46 provided on the outer wall of the connector 4, such that the spray head 3 and the connector 4 are assembled to become one-piece.

[0025] Referring to FIG. 5 and FIG. 6, the rear end and the interior of the connector 4 are hollow to connect with a front end of a water inlet connector 6 of a water spray gun (not shown in the drawings). The stop plate 5 has a larger annular area to get contact with the positioning flange 46 provided on the outer wall of the connector 4. The size of the spray head 3 is reduced, so it is light and cost-effective. When the user wants to adjust the spray head 3, each of the spray holes 32 disposed at the central portion of the circular plate 31 can be aligned with the water outlet 43 of the connector 4 and in contact with the elastic O-shaped sealing ring 42 so as to guide the water to spray out through the spray hole 32 of the spray head 3.

[0026] The present invention is to solve the shortcomings of the prior art and has obvious effects and advantages, not disclosed or published on the market.

[0027] Although particular embodiments of the present invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the present invention. Accordingly, the present invention is not to be limited except as by the appended claims.