Pump head

Abstract

The pump head comprises a shell, a shoulder sleeve, a pressing cover, a pump core and the shoulder sleeve, the pressing cover is installed in the shell, the shoulder sleeve is rotationally connected with the shell, the pump core is installed on the shoulder sleeve, a through hole is formed in the upper end face of the shoulder sleeve, the upper end of the pump core penetrates through the through hole, the pressing cover comprises a nozzle and a connecting opening, the connecting opening is connected with the upper end of the pump core, and the nozzle is located on the side wall of the pressing cover. The side wall of the outer shell is provided with a liquid outlet hole, the outer shell comprises a first state and a second state, the liquid outlet hole corresponds to the nozzle in position under the first state, the nozzle can discharge liquid through the liquid outlet hole by pressing the pressing cover, the liquid outlet hole and the nozzle are staggered in position under the second state, and the nozzle is shielded by the outer shell. And when the pump head is not used, the nozzle is shielded by rotating the shell, and the dustproof effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of cosmetic packaging, and more specifically, to a pump head. Background Art

[0002] In the prior art, spray pumps have been widely used in industries such as daily chemicals and pharmaceuticals due to their exquisite design and convenient use. However, after the existing spray pumps are unpacked, the nozzles of the spray pumps will be exposed outside for a long time, and pollutants such as dust are likely to enter the nozzles during use, causing pollution. Therefore, a technical solution is needed to solve the above problems. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art, and to provide a pump head that can block dust from polluting the nozzle when not in use.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a pump head, which includes a housing, a shoulder sleeve, a pressing cover, and a pump core. The shoulder sleeve and the pressing cover are installed in the housing. The shoulder sleeve is rotatably connected to the housing. The pump core is installed in the shoulder sleeve. A through hole is provided on the upper end surface of the shoulder sleeve. The upper end of the pump core passes through the through hole. The pressing cover includes a nozzle and a connection port. The connection port is connected to the upper end of the pump core. The nozzle is located on the side wall of the pressing cover. An outlet hole is provided on the side wall of the housing. The housing includes a first state and a second state. In the first state, the outlet hole corresponds to the position of the nozzle, and pressing the pressing cover enables the nozzle to discharge liquid through the outlet hole. In the second state, the outlet hole and the nozzle are staggered in position, and the nozzle is blocked by the housing.

[0006] Further, the housing includes a first ring plate, and a first guiding groove is provided on the first ring plate. The shoulder sleeve includes a second ring plate, and a second guiding groove is provided on the second ring plate. The pressing cover includes a third ring plate, and a first guiding plate is provided on the third ring plate. In the first state, the first guiding groove and the second guiding groove are on the same straight line, and the first guiding plate can move up and down along the first guiding groove and the second guiding groove. In the second state, the first guiding groove and the second guiding groove are staggered in position, and the lower end surface of the first guiding plate abuts against the upper end surface of the first ring plate.

[0007] Further, a slope is provided at the upper edge of the first guiding groove.

[0008] Further, a second guiding plate is provided on the first ring plate, and a third guiding groove and a blocking groove are provided on the inner wall of the pressing cover. In the first state, the second guiding plate can move up and down along the third guiding groove. In the second state, the upper end surface of the second guiding plate abuts against the blocking groove.

[0009] Furthermore, the outer wall of the shoulder sleeve is provided with an annular stopper, and the inner wall of the outer shell is provided with a plurality of protrusions, the plurality of protrusions are distributed in an annular shape, and the plurality of protrusions form a downward limit for the annular stopper.

[0010] Furthermore, a limiting groove is provided on the outer wall of the shoulder sleeve, a limiting block is provided in the limiting groove, a groove is formed between the side wall of the limiting block and the side wall of the limiting groove, and a limiting strip that can be correspondingly inserted into the groove is provided on the inner wall of the outer shell, and the limiting strip is respectively located in different grooves in the first state and the second state.

[0011] Furthermore, chamfers are provided on both sides of the limit block.

[0012] Furthermore, the shell is provided with a pressing groove, the pressing groove is connected to the upper end surface of the shell, and the pressing groove is opposite to the position of the liquid outlet.

[0013] Furthermore, the liquid outlet hole is a waist-shaped hole arranged vertically, and the nozzle is within the range of the liquid outlet hole in the first state.

[0014] The beneficial effects of the utility model are:

[0015] The utility model is connected to the shoulder sleeve by rotation of the outer shell, and the push cover is connected to the shoulder sleeve by the pump core. The outer shell and the push cover can rotate relatively with each other. When in use, the liquid outlet hole of the outer shell is aligned with the nozzle, and the nozzle can be discharged by pressing the push cover. When the pump head is not in use, the nozzle is covered by rotating the outer shell to achieve a dust-proof effect. At the same time, since the first guide plate in the push cover is supported by the first ring plate of the outer shell during rotation of the outer shell, the push cover can be fixed to prevent accidental pressing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of this embodiment.

[0017] Figure 2 This is an exploded view of this embodiment.

[0018] Figure 3 It is a cross-sectional view of this embodiment.

[0019] Figure 4 It is a top perspective view of the housing in this embodiment.

[0020] Figure 5 It is a bottom-up stereoscopic view of the housing in this embodiment.

[0021] Figure 6 It is a three-dimensional diagram of the shoulder cover in this embodiment.

[0022] Figure 7 It is a bottom-up stereoscopic view of the button cover in this embodiment.

[0023] Reference numerals: 1, outer shell; 11, liquid outlet hole; 12, pressing groove; 13, first ring plate; 131, first guide groove; 1311, ramp; 132, second guide plate; 14, bump; 15, limiting strip; 2, shoulder sleeve; 21, through hole; 22, second ring plate; 221, second guide groove; 23, ring stop; 24, limiting groove; 241, limiting block; 242, slot; 3, pressing cover; 31, nozzle; 32, connection port; 33, third ring plate; 331, first guide plate; 34, third guide groove; 35, blocking groove; 4, pump core. Specific implementation mode

[0024] Next, the technical solutions in this embodiment will be clearly and completely described in conjunction with the accompanying drawings in this embodiment. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] As Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 As shown in [relevant figures], this embodiment discloses a pump head including an outer shell 1, a shoulder sleeve 2, a pressing cover 3, and a pump core 4. The shoulder sleeve 2 and the pressing cover 3 are installed in the outer shell 1. The shoulder sleeve 2 is rotatably connected to the outer shell 1. A ring stop 23 is provided on the outer side wall of the shoulder sleeve 2. A plurality of bumps 14 are provided on the inner wall of the outer shell 1. The plurality of bumps 14 are annularly distributed. The plurality of bumps 14 form a limit for the downward movement of the ring stop 23. When the shoulder sleeve 2 is installed with the outer shell 1, by pressing, the bumps 14 are buckled below the ring stop 23, so that the up and down movement direction between the outer shell 1 and the shoulder sleeve 2 is limited. The outer shell 1 and the shoulder sleeve 2 can rotate relative to each other. When the shoulder sleeve 2 is fixed on the bottle, the outer shell 1 can rotate.

[0026] As Figure 3 , Figure 5 , Figure 6As shown in the figure, a limiting groove 24 is formed on the outer sidewall of the shoulder sleeve 2. The limiting groove 24 cuts off a part of the ring stop 23. A limiting block 241 is arranged in the limiting groove 24. A slot 242 is formed between the sidewall of the limiting block 241 and the sidewall of the limiting groove 24, that is, a slot 242 is formed between the sidewall of the limiting block 241 and the cut surface of the ring stop 23. A limiting strip 15 that can be correspondingly clamped into the slot 242 is arranged on the inner wall of the outer shell 1. In the first state and the second state, the limiting strip 15 is respectively located in different slots 242. By rotating the outer shell 1, the limiting strip 15 can cross over the limiting block 241 and switch back and forth between the two slots 242. The two slots 242 respectively provide limits for the first state and the second state of the outer shell 1. More preferably, chamfers are arranged on both sides of the limiting block 241. The chamfers provide a transition for the limiting strip 15 to cross over the limiting block 241, making the rotation of the outer shell 1 smoother and having a better feel.

[0027] As Figure 1 , Figure 3 , Figure 6 , Figure 7 shown, the pump core 4 is installed on the shoulder sleeve 2. A through hole 21 is arranged on the upper end surface of the shoulder sleeve 2. The upper end of the pump core 4 passes through the through hole 21. The pump core 4 is installed on the shoulder sleeve 2 through a snap structure (the specific structure of the pump core 4 and the reference can be found in the utility model patent with the publication number CN214525561U). The pressing cover 3 includes a nozzle 31 and a connection port 32. The connection port 32 is connected to the upper end of the pump core 4. The connection port 32 is connected to the nozzle 31. The nozzle 31 is located on the sidewall of the pressing cover 3. A liquid outlet hole 11 is arranged on the sidewall of the outer shell 1. The liquid outlet hole 11 is a vertically arranged waist-shaped hole. The outer shell 1 includes a first state and a second state. In the first state, the liquid outlet hole 11 corresponds to the position of the nozzle 31. By pressing the pressing cover 3, the nozzle 31 can discharge liquid through the liquid outlet hole 11. The nozzle 31 is always within the range of the liquid outlet hole 11 during the process of pressing the pressing head. The up and down movement stroke of the nozzle 31 of the pressing cover 3 is within the up and down range of the liquid outlet hole 11. In the second state, the liquid outlet hole 11 and the nozzle 31 are staggered in position, and the nozzle 31 is blocked by the outer shell 1. By rotating the outer shell 1 from the first state to the second state, the nozzle 31 will be completely covered by the outer shell 1, and the outer shell 1 can play a role in dust prevention when the pump head is not in use.

[0028] As Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 7As shown, the outer shell 1 includes a first ring plate 13, the first ring plate 13 is provided with a first guide groove 131, the shoulder sleeve 2 includes a second ring plate 22, the second ring plate 22 is provided with a second guide groove 221, the pressing cover 3 includes a third ring plate 33, and the third ring plate 33 is provided with a first guide plate 331. In the first state, the first guide groove 131 and the second guide groove 221 are on the same straight line, and the first guide plate 331 can move up and down along the first guide groove 131 and the second guide groove 221. At this time, the pressing cover 3 can be pressed. In the second state, the positions of the first guide groove 131 and the second guide groove 221 are staggered, and the lower end surface of the first guide plate 331 abuts against the upper end surface of the first ring plate 13. At this time, the downward movement of the pressing cover 3 is restricted, and the pressing cover 3 cannot be pressed downward, which can prevent the accidental pressing of the pressing cover 3 when the outer shell 1 blocks the nozzle 31.

[0029] More preferably, a slope 1311 is provided at the upper edge of the first guide groove 131, so that during the process of the outer shell 1 rotating from the first state to the second state, the slope 1311 makes the transition smoother when the first guide plate 331 contacts the upper edge of the first guide groove 131. Moreover, there may be tolerances and errors in the installation between the outer shell 1, the pressing cover 3, and the pump core 4, and the slope 1311 can prevent the interference of tolerances and errors on the rotation of the outer shell 1.

[0030] More preferably, the first ring plate 13 is provided with a second guide plate 132, and the inner wall of the pressing cover 3 is provided with a third guide groove 34 and a stop groove 35. In the first state, the second guide plate 132 can move up and down along the third guide groove 34. In the second state, the upper end surface of the second guide plate 132 abuts against the stop groove 35, and the stop groove 35 can play a role in limiting the edge of the pressing cover 3 when the outer shell 1 is in the second state, preventing the pressing cover 3 from shifting when being squeezed.

[0031] As Figure 1 、 Figure 4 shown, the outer shell 1 is provided with a pressing groove 12, the pressing groove 12 communicates with the upper end surface of the outer shell 1, and the position of the pressing groove 12 is opposite to that of the liquid outlet hole 11. The pressing groove 12 provides a space for the finger to press the pressing cover 3 downward, making the pressing operation more comfortable.

[0032] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as within the protection scope of the present invention.

Claims

1. A pump head, characterized in that, It includes a housing (1), a shoulder sleeve (2), a pressing cover (3), and a pump core (4). The shoulder sleeve (2) and the pressing cover (3) are installed inside the housing (1). The shoulder sleeve (2) is rotatably connected to the housing (1). The pump core (4) is installed in the shoulder sleeve (2). A through hole (21) is provided on the upper end surface of the shoulder sleeve (2). The upper end of the pump core (4) passes through the through hole (21). The pressing cover (3) includes a nozzle (31) and a connection port (32). The connection port (32) is connected to the upper end of the pump core (4). The nozzle (31) is located on the side wall of the pressing cover (3). A liquid outlet hole (11) is provided on the side wall of the housing (1). The housing (1) includes a first state and a second state. In the first state, the liquid outlet hole (11) corresponds to the position of the nozzle (31). Pressing the pressing cover (3) enables the nozzle (31) to discharge liquid through the liquid outlet hole (11). In the second state, the liquid outlet hole (11) and the nozzle (31) are staggered in position, and the nozzle (31) is blocked by the housing (1).

2. The pump head according to claim 1, characterized in that, The housing (1) includes a first ring plate (13). The first ring plate (13) is provided with a first guiding groove (131). The shoulder sleeve (2) includes a second ring plate (22). The second ring plate (22) is provided with a second guiding groove (221). The pressing cover (3) includes a third ring plate (33). The third ring plate (33) is provided with a first guiding plate (331). In the first state, the first guiding groove (131) and the second guiding groove (221) are on the same straight line. The first guiding plate (331) can move up and down along the first guiding groove (131) and the second guiding groove (221). In the second state, the first guiding groove (131) and the second guiding groove (221) are staggered in position, and the lower end surface of the first guiding plate (331) abuts against the upper end surface of the first ring plate (13).

3. The pump head according to claim 2, wherein, A slope (1311) is provided at the upper edge of the first guiding groove (131).

4. The pump head according to claim 2, wherein, The first ring plate (13) is provided with a second guiding plate (132). The inner wall of the pressing cover (3) is provided with a third guiding groove (34) and a retaining groove (35). In the first state, the second guiding plate (132) can move up and down along the third guiding groove (34). In the second state, the upper end surface of the second guiding plate (132) abuts against the retaining groove (35).

5. The pump head according to claim 1, characterized in that, A ring stop (23) is provided on the outer side wall of the shoulder sleeve (2). A plurality of bumps (14) are provided on the inner wall of the housing (1). The plurality of bumps (14) are distributed in a ring shape. The plurality of bumps (14) form a downward limit for the ring stop (23).

6. The pump head according to claim 1, characterized in that, A limiting groove (24) is formed in the outer side wall of the shoulder sleeve (2), a limiting block (241) is arranged in the limiting groove (24), a slot (242) is formed between the side wall of the limiting block (241) and the side wall of the limiting groove (24), a limiting strip (15) capable of correspondingly clamping into the slot (242) is arranged on the inner wall of the housing (1), and the limiting strip (15) is respectively located in different slots (242) in the first state and the second state.

7. The pump head according to claim 6, wherein Chamfers are arranged on both sides of the limiting block (241).

8. The pump head according to claim 1, characterized in that, The housing (1) is provided with a pressing groove (12), the pressing groove (12) communicates with the upper end surface of the housing (1), and the pressing groove (12) is opposite to the position of the liquid outlet hole (11).

9. The pump head according to claim 1, characterized in that, The liquid outlet hole (11) is a vertically arranged kidney-shaped hole, and the nozzle (31) is within the range of the liquid outlet hole (11) in the first state.

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