Pressing head

Abstract

The utility model discloses a pressing head which comprises a pressing cover and a plug, the pressing cover comprises a liquid channel, a connecting channel and an installation groove, the connecting channel is communicated with the liquid channel and the installation groove, the pressing cover is provided with a blocking rod, the blocking rod extends outwards from the inner end of the installation groove, the plug is installed in the installation groove, and at least part of the plug is located in the installation groove. A liquid outlet channel is formed between the inner wall of the plug and the outer wall of the stop lever, one end of the liquid outlet channel communicates with the connecting channel, the plug comprises a closing part, the inner wall part of the closing part abuts against the outer side wall of the stop lever to seal the liquid outlet channel, and the closing part can elastically deform; the closing part can be separated from the abutting part of the stop lever under the action of impact of a medium, the closing part with elastic deformation can restore and close the liquid outlet channel after the medium is extruded, and the effect of protecting the medium which is not extruded is achieved.

Description

Technical Field

[0001] This utility model relates to the field of cosmetic packaging technology, and more specifically, to a press head. Background Technology

[0002] The nozzles of existing cosmetic packaging pumps are kept open. For example, during the use of existing lotion sprayers, some liquid remains on the nozzle. This liquid can drip down and stain the table or remain on the nozzle opening and dry to form hard lumps. In addition, the liquid inside the pump of the existing pump structure is connected to the outside air, which can easily lead to the liquid inside the pump being oxidized, deteriorated, and contaminated. Therefore, a technical solution is needed to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art, and to provide a press head where the nozzle can be sealed under normal conditions.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model discloses a push-button, comprising:

[0006] The press cover includes a liquid channel, a connecting channel, and a mounting groove. The connecting channel connects the liquid channel and the mounting groove. The press cover is provided with a stop bar that extends outward from the inner end of the mounting groove.

[0007] A plug is installed in the mounting groove, at least partially located within the mounting groove. A liquid outlet channel is formed between the inner wall of the plug and the outer wall of the baffle. One end of the liquid outlet channel is connected to the connecting channel. The plug includes a constricted portion, the inner wall of which abuts against the outer wall of the baffle to close the liquid outlet channel. The constricted portion is elastically deformable, and under the impact of the medium, the constricted portion can detach from the abutting portion of the baffle.

[0008] Furthermore, the constricted portion is located at the end of the plug away from the connecting channel, and the diameter of the constricted portion gradually decreases in the direction away from the connecting channel.

[0009] Furthermore, the wall thickness of the tapered portion gradually decreases in the direction away from the connecting channel.

[0010] Furthermore, the end of the stop bar away from the mounting groove is flush with the outer end face of the plug, the diameter of the stop bar is greater than the minimum inner diameter of the constricted portion, and the side wall of the end of the stop bar away from the mounting groove is provided with an abutment surface, which abuts against the inner wall of the constricted portion.

[0011] Furthermore, a chamfer is provided between the abutment surface and the end face of the outer end of the stop bar.

[0012] Furthermore, the diameter of the inner wall of the plug gradually decreases in the direction away from the connecting channel.

[0013] Furthermore, the inner wall of the mounting groove is provided with a limiting groove, and the outer wall of the plug is provided with a limiting ring corresponding to the limiting groove.

[0014] Furthermore, the outer wall of the cover is provided with a stop groove, the stop groove is located at the end of the mounting groove away from the connecting channel, and the plug is provided with a retaining ring corresponding to the stop groove, the retaining ring being at least partially located within the stop groove.

[0015] Furthermore, the stop bar is a circular rod, located at the center of the mounting groove, and the constricted portion has a conical structure with a diameter that gradually decreases outward, located outside the mounting groove.

[0016] Furthermore, the plug is integrally formed and is made of soft rubber.

[0017] The beneficial effects of this utility model are:

[0018] This invention features a soft rubber plug. The plug's constricted portion and the stop bar effectively seal the liquid outlet channel under normal conditions. When the cap is pressed, the medium is pressurized and enters the liquid outlet channel. The pressurized medium expands the constricted portion, allowing the medium to flow out. The elastically deformable constricted portion returns to its original shape after the medium is squeezed out and loses pressure, pressing against the outer wall of the stop bar again to seal the liquid outlet channel and protect any unsqueezed medium. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of one embodiment.

[0020] Figure 2 This is a cross-sectional view of this embodiment.

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0022] Figure 4 This is a schematic diagram of one type of cover in this embodiment.

[0023] Figure 5 This is a schematic diagram of a plug in this embodiment.

[0024] Attached reference numerals: 1. Cover; 11. Liquid channel; 12. Connecting channel; 13. Stop bar; 131. Abutment surface; 132. Chamfer; 14. Mounting groove; 141. Limiting groove; 15. Stop groove; 2. Plug; 21. Liquid outlet channel; 22. Closing part; 23. Limiting ring; 24. Retaining ring. Detailed Implementation

[0025] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] like Figures 1-5 As shown, this embodiment discloses a push-button, including a push-button cover 1 and a plug 2. The push-button cover 1 includes a liquid channel 11, a connecting channel 12, and a mounting groove 14. The mounting groove 14 communicates with the outer wall of the push-button cover 1, and the connecting channel 12 communicates with the liquid channel 11 and the mounting groove 14. The push-button cover 1 is provided with a stop bar 13, which is a circular rod located at the center of the mounting groove 14 and extends outward from the inner end of the mounting groove 14. The connecting channel 12 is a fan-shaped hole and surrounds the outer periphery of the stop bar 13.

[0027] like Figure 2 , Figure 5 As shown, the plug 2 is integrally molded from soft rubber material. The plug 2 is installed in the mounting groove 14, with at least a portion of the plug 2 located within the mounting groove 14. The inner wall of the mounting groove 14 has a limiting groove 141, which is annular and has an arc-shaped inner wall. The outer wall of the plug 2 has a limiting ring 23 corresponding to the limiting groove 141. The limiting ring 23 elastically deforms and engages with the limiting groove 141, thus sealing the outer wall of the plug 2 and the inner wall of the mounting groove 14. The plug 2 is used to limit the installation of the plug 2. The outer wall of the cover 1 is provided with a stop groove 15. The stop groove 15 is located at the end of the mounting groove 14 away from the connecting channel 12. The plug 2 is provided with a retaining ring 24 corresponding to the stop groove 15. The retaining ring 24 is at least partially located in the stop groove 15. The diameter of the stop groove 15 is larger than that of the mounting groove 14. The retaining ring 24 is inserted into the stop groove 15 to block the outer end between the outer wall of the plug 2 and the inner wall of the mounting groove 14, thus achieving a second sealing effect.

[0028] A liquid outlet channel 21 is formed between the inner wall of the plug 2 and the outer wall of the baffle 13. The diameter of the inner wall of the plug 2 gradually decreases in the direction away from the connecting channel 12, making the space inside the liquid outlet channel 21 smaller and smaller in the direction away from the connecting channel 12. This results in the pressure on the medium inside the liquid outlet channel 21 increasing closer to the constriction portion 22. One end of the liquid outlet channel 21 is connected to the connecting channel 12. The plug 2 includes a constriction portion 22, which is located at the end of the plug 2 away from the connecting channel 12. The constriction portion 22 has a conical structure concentrically arranged with the baffle 13, and its diameter gradually decreases in the direction away from the connecting channel 12. Located outside the mounting groove 14, the small diameter end of the constriction portion 22 is far away from the outer wall of the cover 1, so that the medium will not contact the outer wall of the cover 1. The space of the liquid outlet channel 21 in the constriction portion 22 gradually decreases, so that the pressure of the medium in the liquid outlet channel 21 when it reaches the constriction portion 22 will become greater and greater, so that the medium can better break through the constriction portion 22 and deform it. More preferably, the wall thickness of the constriction portion 22 gradually decreases in the direction away from the connecting channel 12, and the wall thickness of the constriction portion 22 gradually decreases towards the small diameter end of the constriction portion 22, so that the small diameter end of the constriction portion 22 is easier to deform, and the medium in the liquid outlet channel 21 is more likely to break through and expand the small diameter end of the constriction portion 22.

[0029] The stop rod 13 extends out of the mounting groove 14. The end of the stop rod 13 away from the mounting groove 14 is flush with the outer end face of the plug 2. The diameter of the stop rod 13 is larger than the minimum inner diameter of the constriction portion 22. The side wall of the end of the stop rod 13 away from the mounting groove 14 is provided with abutment surface 131, which abuts against the inner wall of the constriction portion 22. The inner wall of the constriction portion 22 is conical, and the abutment surface 131 abutting against the inner wall of the constriction portion 22 is also conical. Under normal conditions, the inner wall of the constriction portion 22 abuts against the outer wall of the stop rod 13, thereby sealing the liquid outlet channel 21 and preventing the liquid outlet channel from opening. 21. When the medium in the connecting channel 12, the liquid channel 11 and the pump core comes into contact with the external air, the constriction part 22 can be elastically deformed. Under the impact of the medium, the constriction part 22 can disengage from the abutting part of the baffle 13. When the cover 1 is pressed, the medium will be pressured into the liquid outlet channel 21. The pressurized medium will open the constriction part 22 to allow the medium to flow out. The elastically deformable constriction part 22 will recover after the medium and abut against the outer wall of the baffle 13 again to seal the liquid outlet channel 21, thus protecting the medium that has not been squeezed out.

[0030] like Figure 3 As shown, more preferably, a chamfer 132 is provided between the abutment surface 131 and the end face of the outer end of the stop bar 13, which can reduce the contact area between the abutment surface 131 and the inner wall of the constriction portion 22, and prevent the contact area from being too large so that the medium pressure cannot break through.

[0031] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A printhead, characterized by, include: The cover (1) includes a liquid channel (11), a connecting channel (12), and a mounting groove (14). The connecting channel (12) connects the liquid channel (11) and the mounting groove (14). The cover (1) is provided with a stop bar (13), which extends outward from the inner end of the mounting groove (14). A plug (2) is installed in the mounting groove (14). The plug (2) is at least partially located in the mounting groove (14). A liquid outlet channel (21) is formed between the inner wall of the plug (2) and the outer wall of the baffle (13). One end of the liquid outlet channel (21) is connected to the connecting channel (12). The plug (2) includes a constriction portion (22). The inner wall of the constriction portion (22) abuts against the outer wall of the baffle (13) to close the liquid outlet channel (21). The constriction portion (22) is elastically deformable. Under the impact of the medium, the constriction portion (22) can disengage from the abutment portion of the baffle (13).

2. The stylus of claim 1, wherein The constriction portion (22) is located at the end of the plug (2) away from the connecting channel (12), and the diameter of the constriction portion (22) gradually decreases in the direction away from the connecting channel (12).

3. The stylus of claim 1, wherein, The wall thickness of the closing portion (22) gradually decreases in the direction away from the connecting channel (12).

4. The stylus of claim 1, wherein, The end of the stop rod (13) away from the mounting groove (14) is flush with the outer end face of the plug (2). The diameter of the stop rod (13) is greater than the minimum inner diameter of the constriction portion (22). The side wall of the end of the stop rod (13) away from the mounting groove (14) is provided with an abutment surface (131), which abuts against the inner wall of the constriction portion (22).

5. The stylus of claim 4, wherein, A chamfer (132) is provided between the abutment surface (131) and the end face of the outer end of the stop bar (13).

6. The stylus of claim 1, wherein, The diameter of the inner wall of the plug (2) gradually decreases in the direction away from the connecting channel (12).

7. The stylus of claim 1, wherein, The inner wall of the mounting groove (14) is provided with a limiting groove (141), and the outer wall of the plug (2) is provided with a limiting ring (23) corresponding to the limiting groove (141).

8. The stylus of claim 1, wherein, The outer wall of the cover (1) is provided with a stop groove (15), the stop groove (15) is located at one end of the mounting groove (14) away from the connecting channel (12), and the plug (2) is provided with a retaining ring (24) corresponding to the stop groove (15), the retaining ring (24) is at least partially located in the stop groove (15).

9. The stylus of claim 1, wherein, The stop bar (13) is a circular bar, and the stop bar (13) is located at the center of the mounting groove (14). The constriction portion (22) has a conical structure with a diameter that gradually decreases outward, and the constriction portion (22) is located outside the mounting groove (14).

10. The stylus of claim 1, wherein The plug (2) is integrally formed and is made of soft rubber.

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