Spraying pump head capable of automatically shielding nozzle

Abstract

The utility model relates to a manual spraying device, in particular to a spraying pump head capable of automatically shielding a nozzle, which comprises a pump head body, a pressing head capable of being elastically pressed downwards is arranged at the upper end of the pump head body, and the nozzle is arranged on the side face of the pressing head. The pressing cap is arranged at the upper end of the pressing head, a spring forming elastic support in the axial direction is arranged between the pressing cap and the pressing head in a matched mode, a shielding part matched with the cylindrical surface of the pressing head is formed on the side edge of the pressing cap, a receding opening is formed in the shielding part, and a blocking part used for blocking the lower edge of the shielding part is formed on the lower edge of the cylindrical surface of the pressing head; when no external force exists, the pressing cap floats under the support of the spring, and the avoiding opening is just higher than the upper edge of the nozzle, so that the nozzle is shielded in the shielding part; the pressing cap is pressed down by applying external force until the lower edge of the shielding part is blocked by the blocking part, and the nozzle is exactly located in the avoiding opening. According to the utility model, the step of opening / assembling the outer cover is omitted, and the blockage caused by air drying of residual liquid materials on the nozzle is effectively avoided.

Description

Technical Field

[0001] This utility model relates to a manual spraying device, specifically an automatic nozzle shielding spray pump head. Background Technology

[0002] Hair spray is a commonly used spray product in the hair care industry. Its core structure is a pump head used to generate spray. The structure of the pump head is often as disclosed in the announcement number CN1099321C, which describes a manual spraying device for liquids.

[0003] If a spray pump head is exposed to air for an extended period, the nozzles are prone to clogging due to the drying of residual liquid material, resulting in the pump head failing to spray or producing a poor spray effect. Therefore, existing technologies often employ removable covers for the pump head nozzles.

[0004] The applicant found in practice that, in actual use, users often do not put the outer cap back on after using the spray, which makes it more likely that the spray will not spray properly in subsequent uses. Utility Model Content

[0005] The present invention aims to provide an automatic shielding nozzle for the ejector pump head, which can effectively prevent residual liquid material in the nozzle from drying out and causing blockage.

[0006] To achieve the above objectives, the present invention adopts the following technical solution.

[0007] The automatic shielding nozzle ejection pump head includes a pump head body, an elastically pressable pressing head at the upper end of the pump head body, a nozzle on the side of the pressing head, and a suction tube at the lower end of the pump head body; it also includes a pressing cap at the upper end of the pressing head, a spring that provides elastic support along the axial direction between the pressing cap and the pressing head, a blocking part formed on the side edge of the pressing cap that mates with the cylindrical surface of the pressing head, a clearance opening on the blocking part, and a blocking part formed on the lower edge of the cylindrical surface of the pressing head to block the lower edge of the blocking part; when no external force is applied, the pressing cap floats up under the support of the spring, and the clearance opening is just higher than the upper edge of the nozzle, causing the nozzle to be shielded within the blocking part; when an external force is applied to press down the pressing cap until the lower edge of the blocking part is blocked by the blocking part, the nozzle is exactly located in the clearance opening.

[0008] Preferably, the pressing cap, spring, and pressing head are coaxially fitted, with a positioning post formed at the upper end of the inner side of the pressing cap along the axis, the upper end of the spring sleeved on the positioning post, and a boss formed at the center of the top surface of the pressing head, with the lower end of the spring sleeved on the boss.

[0009] Preferably, the housing is coaxially arranged around the press cap, the lower end of the housing is fixedly connected to the lower end of the press head, the upper end of the housing has an opening for the press cap to move vertically, and a window hole is formed on the side wall of the housing that is horizontally aligned with the nozzle.

[0010] Preferably, the outer wall of the casing has a flared opening surrounding the window.

[0011] Preferably, the pressing cap has a protruding stepped portion on its cylindrical surface. When no external force is applied, the pressing cap floats up under the support of the spring, and the stepped portion abuts against the lower end of the opening.

[0012] Compared with the prior art, the present invention has the following advantages: by pressing the cap to automatically close / open the nozzle, compared with the prior art, it not only saves the step of opening / reinstalling the outer cover, but also effectively avoids the residual liquid material in the nozzle from drying out and causing blockage.

[0013] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is an exploded view of the structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the working state of this utility model. Figure 1 .

[0017] Figure 4 This is a schematic diagram of the working state of this utility model. Figure 2 . Detailed Implementation

[0018] Please see Figures 1 to 4 As shown, the automatic shielding nozzle ejection pump head provided by this utility model includes a pump head body 1, an elastically pressable pressing head 2 at the upper end of the pump head body 1, a nozzle 20 on the side of the pressing head 2, and a suction tube 3 at the lower end of the pump head body 1; it also includes a pressing cap 4 at the upper end of the pressing head 2, a spring 5 that provides elastic support along the axial direction between the pressing cap 4 and the pressing head 2, and a shielding effect formed by the side edge of the pressing cap 4 that cooperates with the cylindrical surface of the pressing head 2. The blocking part 41 has a recess 42. The lower edge of the cylindrical surface of the pressing head 2 forms a blocking part 21 to block the lower edge of the blocking part 41. When no external force is applied, the pressing cap 4 floats up under the support of the spring 5, and the recess 42 is just higher than the upper edge of the nozzle 20, causing the nozzle 20 to be covered in the blocking part 41. When an external force is applied to press down the pressing cap 4 until the lower edge of the blocking part 41 is blocked by the blocking part 21, the nozzle 20 is just located in the recess 42.

[0019] The pump head body 1 is a known spray pump head structure in the prior art, so it will not be described in detail in the specific implementation.

[0020] like Figure 3As shown, when an external force is applied to press down the cap 4 until the lower edge of the blocking part 41 is blocked by the blocking part 21, the nozzle 20 is exactly located in the clearance opening 42. If the external force is continued to be applied to press down the cap 4, the cap 4 and the pressing head 2 will be pressed down synchronously, and the nozzle 20 can spray outward from the clearance opening 42.

[0021] like Figure 4 As shown, when no external force is applied, the pressing cap 4 floats up under the support of the spring 5, and the clearance opening 42 is just higher than the upper edge of the nozzle 20, causing the nozzle 20 to be covered by the blocking part 41.

[0022] Therefore, this utility model can automatically close / open the nozzle 20 by pressing the cap 4. Compared with the prior art, it not only saves the step of opening / reinstalling the outer cover, but also effectively avoids the residual liquid material in the nozzle 20 from drying out and causing blockage.

[0023] In a preferred embodiment, the pressing cap 4, the spring 5, and the pressing head 2 are coaxially fitted together. The inside of the pressing cap 4 forms a positioning post 43 at the upper end along the axis. The upper end of the spring 5 is sleeved on the positioning post 43. The top surface of the pressing head 2 forms a boss 22 at the center. The lower end of the spring 5 is sleeved on the boss 22.

[0024] In another preferred embodiment, a housing 6 is coaxially mounted on the pressing cap 4. The lower end of the housing 6 is fixedly connected to the lower end of the pressing head 2. The upper end of the housing 6 has an opening 61 for the pressing cap 4 to move vertically. A window 62 is formed on the side wall of the housing 6, which is horizontally aligned with the nozzle 20. Obviously, the housing 6 will move synchronously with the pressing head 2, and the nozzle 20 will align with the window 62 and the clearance opening 42 simultaneously when spraying outwards.

[0025] Preferably, the outer wall of the housing 6 has a flared opening 63 surrounding the window 62 to constrain the effective range of the spray, thereby improving the accuracy of the spray operation.

[0026] Preferably, the cylindrical surface of the pressing cap 4 has a protruding step portion 44. When no external force is applied, the pressing cap 4 floats up under the support of the spring 5, and the step portion 44 abuts against the lower end of the opening 61, thereby preventing the pressing cap 4 from falling off.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

Claims

1. An automatic nozzle-shielding ejection pump head, comprising a pump head body, an elastically pressable pressing head at the upper end of the pump head body, a nozzle on the side of the pressing head, and a suction tube at the lower end of the pump head body; characterized in that, It also includes a pressing cap located at the top of the pressing head, and a spring that provides elastic support along the axial direction is fitted between the pressing cap and the pressing head. The side edge of the pressing cap forms a blocking part that mates with the cylindrical surface of the pressing head. A clearance opening is provided on the blocking part, and a blocking part is formed on the lower edge of the cylindrical surface of the pressing head to block the lower edge of the blocking part. When no external force is applied, the pressing cap floats up under the support of the spring, and the clearance opening is just higher than the upper edge of the nozzle, causing the nozzle to be covered in the blocking part. When an external force is applied to press down the pressing cap until the lower edge of the blocking part is blocked by the blocking part, the nozzle is just located in the clearance opening.

2. The ejector pump head of the automatic shielded nozzle according to claim 1, characterized in that, The press cap, spring, and press head are coaxially fitted together. The inside of the press cap forms a positioning post at the upper end along the axis. The upper end of the spring is sleeved on the positioning post. The top surface of the press head forms a boss at the center. The lower end of the spring is sleeved on the boss.

3. The ejector pump head of the automatic shielded nozzle according to claim 1 or 2, characterized in that, It also includes a housing coaxially mounted on the press cap, with the lower end of the housing fixedly connected to the lower end of the press head, the upper end of the housing having an opening for the press cap to move vertically, and a window formed on the side wall of the housing that is horizontally aligned with the nozzle.

4. The ejector pump head of the automatic shielded nozzle according to claim 3, characterized in that, The outer wall of the casing has a flared opening that surrounds the window opening.

5. The ejector pump head of the automatic shielding nozzle according to claim 3, characterized in that, The press cap has a raised step on its cylindrical surface. When no external force is applied, the press cap floats up under the support of the spring, and the step abuts against the lower end of the opening.

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