A telescopic hidden pump head of a cosmetic bottle

Abstract

The application discloses a telescopic hidden pump head of a cosmetic bottle, which comprises a mounting base provided with a pressing pump, an outer cover, a pressing cover and a spray pipe, wherein the spray pipe is installed at the pressing end of the pressing pump; the outer cover is rotatably installed at the mounting base; the spray pipe is of a sectional structure, which comprises a first pipe body and a second pipe body provided with a spray head; the first pipe body is installed at the pressing end of the pressing pump; the pressing cover is rotatably installed at the first pipe body; the second pipe body is rotatably connected with the first pipe body; and the second pipe body can swing on the first pipe body; when the outer cover is rotated, the outer cover drives the second pipe body to swing, so that the spray head is stored in the pressing cover or extends outside the pressing cover; the telescopic hidden pump head has the advantages that the structure design is novel and exquisite; the storage and extension of the spray head can be realized by rotating the outer cover; when the spray head is in the storage state, the overall appearance of the pump head is simple and beautiful; meanwhile, the spray head is effectively isolated from the external environment, so that the invasion of external air pollutants into the spray pipe can be prevented, and the sanitary level of the cosmetic liquid in the pipe is improved.

Description

Technical Field

[0001] This invention belongs to the field of cosmetic bottle technology, and relates to a component of a cosmetic bottle, particularly a telescopic concealed pump head for a cosmetic bottle. Background Technology

[0002] The pump head of a cosmetic bottle is used to dispense a measured amount of liquid from the bottle. Existing pump heads typically include an outer cap, a pump, a cap, and a nozzle. The outer cap is fixed to the bottle opening. The pump is installed inside the outer cap, with its input end connected to a straw that extends into the bottle, and its output end connected to the nozzle. The cap is attached to the pump's pressing end. The nozzle has a spray nozzle at its end, with an opening extending beyond the cap. A corresponding clearance opening is provided on the outer cap.

[0003] In use, pressing down the cap dispenses a measured amount of liquid from the nozzle. However, existing pump heads have significant shortcomings: firstly, the nozzle is always exposed and cannot be stored inside the cap, affecting the overall simplicity and aesthetics; secondly, the nozzle is exposed to the outside environment, making it easy for dust and other contaminants in the air to adhere to and penetrate the spray nozzle, affecting the hygienic quality of the cosmetic liquid inside. Currently, to prevent contamination, a sealing cap is usually added to the outer cover to cover the nozzle.

[0004] Therefore, it is necessary to design an improved pump head for cosmetic bottles to overcome the above-mentioned defects. Summary of the Invention

[0005] The purpose of this invention is to provide a telescopic concealed pump head for cosmetic bottles to solve the above-mentioned technical problems.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a telescopic concealed pump head for a cosmetic bottle, including a mounting base with a press pump, an outer cover, a press cap, and a spray pipe with an output channel. The input port of the press pump is connected to the inside of the cosmetic bottle, the spray pipe is installed on the pressing end of the press pump, and the output channel is connected to the output port of the press pump.

[0007] The outer cover is rotatably mounted on the mounting base;

[0008] The nozzle has a segmented structure, including a first tube and a second tube with a nozzle. The first tube is installed on the pressing end of the press pump, the press cover is rotatably installed on the first tube, and the second tube is rotatably connected to the first tube. The second tube can swing on the first tube.

[0009] When the outer cover is rotated, the outer cover drives the second tube to swing, thereby causing the nozzle to be housed inside the cover or extend outside the cover.

[0010] Furthermore, the cover is provided with a receiving groove, and when the nozzle is housed inside the cover, the nozzle is located in the receiving groove; the cover is provided with a notch for the nozzle to extend out, and the notch is connected to the receiving groove.

[0011] Furthermore, a first guide plate and a second guide plate are respectively provided on both sides of the notch on the cover. The first guide plate and the second guide plate are used to guide the nozzle to extend out through the notch. One side of the first guide plate and one side of the second guide plate extend into the receiving groove. A guide channel is formed between the first guide plate and the second guide plate. The two ends of the guide channel are respectively connected to the notch and the receiving groove.

[0012] Furthermore, the cover has a limiting drive plate inside the receiving groove, the outer cover has a raised rim, the rim has a mating groove, the bottom of the mating groove has a downward extending groove, the width of the mating groove is greater than the width of the extending groove, when the nozzle is in the extended state, the limiting drive plate is vertically aligned with the extending groove, and when the nozzle is in the retracted state, the limiting drive plate is vertically aligned with the bottom of the mating groove.

[0013] Furthermore, the outer cover is fitted onto the mounting base, and the outer cover is rotatable on the mounting base. The mounting base is provided with a guide groove, and the outer cover is provided with a guide block. The guide block cooperates with the guide groove. One end of the guide groove on the outer cover is provided with an entry groove, which communicates with the guide groove. The guide groove on the outer cover is provided with a first limiting block and a second limiting block, and the guide block is located between the first limiting block and the second limiting block.

[0014] Furthermore, the first tube body is provided with a locking block, the mounting base is provided with a locking groove, and the locking block cooperates with the locking groove; the first tube body is provided with a mounting post, the cover is provided with a mounting groove, the mounting post cooperates with the mounting groove, and the cover is located inside the outer cover and can rotate on the mounting post.

[0015] Furthermore, the first tube body is provided with a connecting post, the second tube body is provided with a sleeve, the sleeve is provided with a slot, the connecting post cooperates with the slot, and the second tube body can swing on the connecting post.

[0016] Furthermore, the output end of the press pump is provided with a liquid outlet, and the output channel includes a first output channel and a second output channel. The first output channel is disposed in the first tube body, and the second output channel is disposed in the second tube body. When the nozzle is in the extended state, the first output channel and the second output channel are connected to each other. When the nozzle is in the retracted state, the first output channel and the second output channel are not connected to each other. One end of the first output channel is connected to the output port of the press pump, the nozzle is provided with a nozzle, and one end of the second output channel is connected to the nozzle.

[0017] The side of the connecting column is machined with a connecting hole. One end of the first output channel is connected to the connecting hole, and one end of the second output channel is connected to the slot. When the nozzle is in the extended state, one end of the second output channel is connected to the connecting hole, so that the first output channel and the second output channel are connected to each other. When the nozzle is in the retracted state, the sleeve blocks the connecting hole, the second output channel is disconnected from the connecting hole, and the first output channel and the second output channel are not connected.

[0018] Furthermore, the outer cover is provided with a clearance opening. When the nozzle extends outside the cover, the outer end of the nozzle passes through the clearance opening and extends outside the outer cover. When the nozzle is retracted inside the cover, the clearance opening corresponds to the outer wall of the outer cover.

[0019] The beneficial effects of this invention are as follows: The telescopic concealed pump head of this invention has the following significant advantages: Compared with conventional pump heads in the prior art, its structural design is novel and ingenious. The spray nozzle adopts a split structure, and the nozzle can be retracted and extended by rotating the outer cap. When the nozzle is retracted into the cap, the overall appearance of the pump head is simple and beautiful, enhancing the aesthetics of the cosmetic bottle; at the same time, the nozzle is effectively isolated from the external environment, preventing external air pollutants from entering the nozzle, thereby significantly improving the hygiene and safety level of the cosmetic liquid inside. The operation and transmission are highly efficient and reliable. The outer cap pushes the nozzle, which in turn drives the second tube to swing and bend back, realizing the retraction of the nozzle; the outer cap pushes the cap to rotate, which drives the second tube to swing and straighten, realizing the extension of the nozzle. The retraction and extension processes are smooth, ensuring stability and reliability during long-term use. Attached Figure Description

[0020] Figure 1 This is a first perspective view of the telescopic concealed pump head according to an embodiment of the present invention.

[0021] Figure 2 This is a second perspective view of the telescopic concealed pump head according to an embodiment of the present invention.

[0022] Figure 3 This is a front view of the telescopic concealed pump head according to an embodiment of the present invention.

[0023] Figure 4 yes Figure 3 Top view.

[0024] Figure 5 yes Figure 3 Sectional view of AA.

[0025] Figure 6 This is a schematic diagram of the telescopic concealed pump head of this embodiment of the invention when the cover is removed.

[0026] Figure 7 This is a schematic diagram of the telescopic concealed pump head of this embodiment of the invention when the outer cover is removed.

[0027] Figure 8 This is a first perspective view of the nozzle according to an embodiment of the present invention.

[0028] Figure 9 This is a second perspective view of the nozzle according to an embodiment of the present invention.

[0029] Figure 10 This is a schematic diagram of the longitudinal section of the nozzle according to an embodiment of the present invention.

[0030] Figure 11 This is a schematic diagram of the structure when the first tube and the second tube are separated in an embodiment of the present invention.

[0031] Figure 12 This is a schematic diagram of the structure of the second tube body according to an embodiment of the present invention.

[0032] Figure 13 This is a first perspective view of the outer cover according to an embodiment of the present invention.

[0033] Figure 14 yes Figure 13 A magnified view of I.

[0034] Figure 15 This is a second perspective view of the outer cover according to an embodiment of the present invention.

[0035] Figure 16 This is a perspective view of the mounting base according to an embodiment of the present invention.

[0036] Figure 17 This is a schematic diagram of the structure of the nozzle installed on the press pump according to an embodiment of the present invention.

[0037] Figure 18 This is a first perspective view of the cover according to an embodiment of the present invention.

[0038] Figure 19 This is a second perspective view of the cover according to an embodiment of the present invention.

[0039] Figure 20 This is a schematic diagram of the telescopic concealed pump head structure when the nozzle is housed inside the cover, according to an embodiment of the present invention.

[0040] Figure 21 This is a schematic diagram of the nozzle in the retracted state according to an embodiment of the present invention.

[0041] Figure 22 This is a first structural schematic diagram of the nozzle being housed inside the cover according to an embodiment of the present invention.

[0042] Figure 23 This is a schematic diagram of the second structure of the present invention when the nozzle is housed inside the cover.

[0043] Explanation of reference numerals in the attached figures:

[0044] Mounting base 1, press pump 2, outer cover 3, nozzle 4, press cover 5;

[0045] 11. Vertical edge, 12. Slot, 13. Guide groove, 14. Entry groove, 15. First limiting block, 16. Second limiting block;

[0046] Input port 21, output port 22, push-button end 23;

[0047] 31. Avoidance opening, 32. Clearance groove, 33. Center hole, 34. Surrounding edge, 35. Guide block;

[0048] Mating groove 341, extension groove 342;

[0049] First side panel 3411, second side panel 3412;

[0050] The first tube body 41, the second tube body 42;

[0051] First output channel 411, insertion post 412, mounting post 413, locking block 414, connecting post 415;

[0052] Insertion part 4151, protruding ring 4152, connecting hole 4153;

[0053] Second output channel 421, nozzle 422, baffle plate 423, socket 424;

[0054] Fork in the road 4111;

[0055] Nozzle 4221;

[0056] Slot 4241;

[0057] 51. Receiving groove, 52. Notch, 53. First guide plate, 54. Second guide plate, 55. Guide channel, 56. Limiting drive plate, 57. Mounting groove. Detailed Implementation

[0058] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0059] like Figure 1-5 As shown, this embodiment features a telescopic concealed pump head for a cosmetic bottle. The telescopic concealed pump head includes a mounting base 1, an outer cap 3, a push cap 5, and a spray pipe 4 with an output channel and a nozzle 422. The mounting base 1 is fixed to the body of the cosmetic bottle, and a push pump 2 is fixed on the mounting base 1. The push pump 2 has an inlet 21 for inputting liquid and an outlet 22 for outputting liquid. A straw (not shown in the attached figure) is connected to the inlet 21 of the push pump 2, with one end of the straw extending into the cosmetic bottle. The spray pipe 4 is installed at the push end 23 of the push pump 2, and the output channel is connected to the outlet 22 of the push pump 2. The push pump 2 is prior art, therefore its specific structure is not described in detail.

[0060] Reference Figure 16 The mounting base 1 is circular in shape. A raised vertical edge 11 is machined onto the mounting base 1, and a slot 12 is machined onto the vertical plate 11. The mounting base 1 also has an annular guide groove 13 and an entry groove 14, one end of which connects to one end of the guide groove 13. A first limiting block 15 and a second limiting block 16 are machined within the guide groove 13 on the outer cover 3, respectively positioned near the two ends of the guide groove 13. (Refer to...) Figure 13 and 15 The outer cover 3 has a cylindrical shape. The sides of the outer cover 3 are machined with clearance openings 31 and clearance grooves 32, which correspond to each other. The outer cover 3 has a central hole 33 and a guide block 35 machined inside. The outer cover 3 is fitted onto the mounting base 1, with the vertical edge 11 fitted into the central hole 33. The guide block 35 engages with the guide groove 13, and is located between the first limiting block 15 and the second limiting block 16. The outer cover 3 can rotate along the guide groove 13 on the mounting base 1. (Refer to...) Figure 14 The mounting base 1 has a raised rim 34 machined inside, and a mating groove 341 machined on the rim 34. One side of the mating groove 341 is designated as a first side surface 3411, and the other side is designated as a second side surface 3412. The bottom of the mating groove 341 has a downwardly extending extension groove 342 machined, which is close to the second side surface 3412. The width of the mating groove 341 is greater than the width of the extension groove 342, and the bottom of the extension groove 342 is lower than the bottom of the mating groove 341.

[0061] Reference Figure 8-11The nozzle 4 has a segmented structure, including a first tube 41 and a second tube 42. The second tube 42 is rotatably connected to the first tube 41 and can swing on the first tube 41. When the outer cover 3 is rotated, the outer cover 3 can drive the second tube 42 to swing, so that the nozzle 422 is housed inside the cover 5 or extends outside the cover 5.

[0062] The middle portion of the first tube body 41 has a downwardly extending insertion post 412 and an upwardly extending mounting post 413, with the insertion post 412 and mounting post 413 corresponding vertically. (See reference...) Figure 17 The insert 412 is inserted into the pressing end 23 of the press pump 2, thereby installing the first tube 41 onto the pressing end 23 of the press pump 2. One end of the first tube 41 has a downwardly extending locking block 414, and the other end has an upwardly extending circular connecting post 415. The locking block 414 engages with the locking groove 12 of the mounting base 1, allowing the first tube 41 to slide up and down within the groove 12. The upright plate 11 of the mounting base 1 limits the circumferential position of the first tube 41, preventing it from rotating freely. The upper end of the connecting post 415 has an insertion part 4151, on which a protruding ring 4152 is machined, extending along the circumference of the connecting post 415. A connecting hole 4153 is also machined on the side of the connecting post 415.

[0063] A downward-extending cover plate 423 is machined in the middle of the second tube body 42, and a nozzle 422 and a sleeve 424 are machined at both ends of the second tube body 42, respectively. The nozzle 422 is frustum-shaped, and a nozzle 4221 is machined at one end. (Refer to...) Figure 12 One end of the insert 424 is machined with a slot 4241. The connecting post 415 of the first tube 41 mates with the slot 4241 of the second tube 42, and the insertion part 4151 is inserted into the slot 4241, thereby connecting the second tube 42 to the first tube 41. The second tube 42 can swing on the connecting post 415 of the first tube 41, and the connecting hole 4153 is located in the slot 4241.

[0064] The output channels of the nozzle 4 include a first output channel 411 and a second output channel 421. The first output channel 411 is disposed in the first tube body 41, and the second output channel 421 is disposed in the second tube body 42. One end of the first output channel 411 is connected to the output port 22 of the press pump 2, and the other end is connected to the connecting hole 4153. One end of the second output channel 421 is connected to the nozzle 4221, and the other end is connected to the slot 4241. The first output channel 411 is also provided with a branch channel 4111. One end of the branch channel 4111 is connected to the first output channel 411, and a sealing plug (not shown in the attached figure) is inserted into the other end of the branch channel 4111, sealing one end of the branch channel 4111.

[0065] When the nozzle 422 is in the extended state, one end of the second output channel 421 is connected to the connection hole 4153, so that the first output channel 411 and the second output channel 421 are connected to each other, and the output channel is in the conductive state.

[0066] When the nozzle 422 is in the retracted state, the sleeve 424 blocks the connection hole 4153, and the second output channel 421 is not connected to the connection hole 4153. That is, the first output channel 411 and the second output channel 421 are disconnected from each other, and the output channel is in the closed state at this time.

[0067] The liquid inside the cosmetic bottle enters the pump 2 through the straw. The liquid in the pump 2 then sequentially enters the first output channel 411 and the second output channel 421, finally being ejected from the nozzle 4221 of the spray head 422. The flow direction of the liquid in the first output channel 411 and the second output channel 421 is as follows: Figure 10 As indicated by the middle arrow.

[0068] Reference Figure 18 and Figure 19 The cover 5 is cylindrical in shape, with a receiving groove 51 machined at its lower end. A protruding post is machined in the receiving groove 51 on the cover 5, and a mounting groove 57 is machined at one end of the protruding post. The mounting post 413 of the first tube 41 cooperates with the mounting groove 57, thereby realizing the installation of the cover 5 on the first tube 41. The cover 5 is located inside the outer cover 3, and the cover 5 can rotate on the mounting post 413, that is, the cover 5 can rotate on the first tube 41.

[0069] The outer surface of the cover 5 has an "n"-shaped notch 52 for the nozzle 422 to extend out, which connects to the receiving groove 51. A first guide plate 53 and a second guide plate 54 are machined on both sides of the notch 52 on the cover 5. The first guide plate 53 and the second guide plate 54 guide the nozzle 422 to extend out through the notch 52. One side of the first guide plate 53 and one side of the second guide plate 54 extend into the receiving groove 51, forming a guide channel 55 between the first guide plate 53 and the second guide plate 54. The guide channel 55 has a narrow outer and wide inner structure, and its two ends connect to the notch 52 and the receiving groove 51, respectively. When the nozzle 422 is in the retracted state, it is located within the guide channel 55. A limit drive plate 56 is machined within the receiving groove 51 on the cover 5. When the cover 5 is installed on the first tube 41, the limit drive plate 56 engages with the mating groove 341 of the outer cover 3 in its natural state. When the nozzle 422 is in the retracted state, the limiting drive plate 56 corresponds vertically to the bottom of the mating groove 341, and the bottom of the mating groove 341 limits the vertical position of the cover 5, so the cover 5 cannot be pressed down. When the nozzle 422 is in the extended state, the limiting drive plate 56 corresponds vertically to the extension groove 342, and the limiting drive plate 56 can enter the extension groove 342, so the cover 5 can be pressed down, thereby pumping out the liquid from the cosmetic bottle.

[0070] The working principle of the telescopic concealed pump head in this embodiment is as follows:

[0071] The initial state of nozzle 422 is the extended state, such as... Figure 1 , Figure 6 , Figure 7 and Figure 17 As shown, the nozzle 422 extends outside the cover 5, and the outer end of the nozzle 422 passes through the clearance opening 31 of the outer cover 3 and extends outside the outer cover 3. The cover plate 423 of the second tube 42 is located inside the notch 52 of the cover 5, covering the notch 52. The limiting drive plate 56 of the cover 5 abuts against the second side 3412 of the mating groove 341. Along Figure 4 Twist the outer cover 3 in the direction of arrow B. The outer cover 3 pushes the nozzle 422, causing the second tube 42 to swing and retract. When the outer cover 3 is fully rotated, the second tube 42 is completely retracted into the cover 5, and the second tube 42 is in a bent state. At this time, the nozzle 422 is in the retracted state. Figure 20-23 As shown, the clearance opening 31 of the outer cover 3 corresponds to the outer wall of the outer cover 3, and the limiting drive plate 56 of the cover 5 abuts against the first side 3411 of the mating groove 341. Then along... Figure 4 Before the outer cover 3 is rotated in the direction of arrow C, and the limiting drive plate 56 of the cover 5 abuts against the second side 3412 of the mating groove 341, the cover 5 does not rotate. When the second side 3412 of the mating groove 341 of the outer cover 3 abuts against the limiting drive plate 56 of the cover 5, the outer cover 3 will push the cover 5 synchronously along the direction of the limiting drive plate 56. Figure 4 As the cover 5 rotates in the direction of arrow C, the first guide plate 53 of the cover 5 pushes the nozzle 422, thereby driving the second tube 42 to swing and extend. When the outer cover 3 is rotated to its position, the second tube 42 is in a straightened state, and the nozzle 422 extends out of the cover 5. At this time, the nozzle 422 is in the extended state. Figure 1 , Figure 6 , Figure 7 and Figure 17 As shown.

[0072] The telescopic concealed pump head of the present invention has the following significant advantages:

[0073] 1. Compared with conventional pump heads in existing technologies, its structural design is novel and ingenious;

[0074] 2. The spray nozzle adopts a split structure, and the nozzle can be stored and extended by rotating the outer cap. When the nozzle is stored in the cap, the overall appearance of the pump head is simple and beautiful, enhancing the aesthetics of the cosmetic bottle; at the same time, the nozzle is effectively isolated from the external environment, preventing external air pollutants from entering the nozzle, thereby significantly improving the hygiene and safety level of the cosmetic liquid inside the tube;

[0075] 3. The operation and transmission are highly efficient and reliable. The outer cover pushes the nozzle, which in turn drives the second tube to swing and bend back, thus realizing the nozzle's storage. The outer cover pushes the pressing cover to rotate, and the pressing cover drives the second tube to swing and straighten, thus realizing the nozzle's extension. The storage and extension processes are smooth, ensuring stability and reliability during long-term use.

[0076] 4. When the nozzle is in the retracted state, the first output channel and the second output channel are not connected, and the output channels are in a closed state. Outside air cannot enter the cosmetic bottle, thus preventing the cosmetic inside the bottle from oxidizing and deteriorating.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A telescopic concealed pump head for a cosmetic bottle, comprising a mounting base (1) for a press pump (2), an outer cover (3), a press cap (5), and a nozzle (4) for an output channel, wherein the inlet (21) of the press pump (2) is connected to the inside of the cosmetic bottle, the nozzle (4) is mounted on the pressing end (23) of the press pump (2), and the output channel is connected to the output port (22) of the press pump (2), characterized in that: The outer cover (3) is rotatably mounted on the mounting base (1); The nozzle (4) has a segmented structure, including a first tube (41) and a second tube (42) with a nozzle (422). The first tube (41) is installed on the pressing end (23) of the press pump (2). The press cover (5) is rotatably installed on the first tube (41). The second tube (42) is rotatably connected to the first tube (41). The second tube (42) can swing on the first tube (41). When the outer cover (3) is rotated, the outer cover (3) drives the second tube (42) to swing, so that the nozzle (422) is housed inside the cover (5) or extends outside the cover (5).

2. The telescopic concealed pump head according to claim 1, characterized in that, The cover (5) is provided with a receiving groove (51). When the nozzle (422) is stored inside the cover (5), the nozzle (422) is located inside the receiving groove (51). The cover (5) is provided with a notch (52) for the nozzle (422) to extend out. The notch (52) is connected to the receiving groove (51).

3. The telescopic concealed pump head according to claim 2, characterized in that, The cover (5) has a first guide plate (53) and a second guide plate (54) on both sides of the notch (52). The first guide plate (53) and the second guide plate (54) are used to guide the nozzle (422) to extend through the notch (52). One side of the first guide plate (53) and one side of the second guide plate (54) extend into the receiving groove (51). A guide channel (55) is formed between the first guide plate (53) and the second guide plate (54). The two ends of the guide channel (55) are connected to the notch (52) and the receiving groove (51) respectively.

4. The telescopic concealed pump head according to claim 2 or 3, characterized in that, The cover (5) has a limiting drive plate (56) in the receiving groove (51). The outer cover (3) has a raised rim (34) and a mating groove (341) on the rim (34). The bottom of the mating groove (341) has a downward extending groove (342). The width of the mating groove (341) is greater than the width of the extending groove (342). When the nozzle (422) is in the extended state, the limiting drive plate (56) corresponds vertically to the extending groove (342). When the nozzle (422) is in the retracted state, the limiting drive plate (56) corresponds vertically to the bottom of the mating groove (341).

5. The telescopic concealed pump head according to claim 1, characterized in that, The outer cover (3) is fitted onto the mounting base (1). The outer cover (3) can rotate on the mounting base (1). The mounting base (1) is provided with a guide groove (13). The outer cover (3) is provided with a guide block (35). The guide block (35) cooperates with the guide groove (13). One end of the guide groove (13) on the outer cover (3) is provided with an entry groove (14). The entry groove (14) is connected to the guide groove (13). The guide groove (13) on the outer cover (3) is provided with a first limiting block (15) and a second limiting block (16). The guide block (35) is located between the first limiting block (15) and the second limiting block (16).

6. The telescopic concealed pump head according to claim 1, characterized in that, The first tube body (41) is provided with a locking block (414), and the mounting base (1) is provided with a locking groove (12). The locking block (414) cooperates with the locking groove (12). The first tube body (41) is provided with a mounting post (413), and the cover (5) is provided with a mounting groove (57). The mounting post (413) cooperates with the mounting groove (57). The cover (5) is located inside the outer cover (3) and can rotate on the mounting post (413).

7. The telescopic concealed pump head according to claim 1, characterized in that, The first tube (41) is provided with a connecting post (415), the second tube (42) is provided with a sleeve (424), the sleeve (424) is provided with a slot (4241), the connecting post (415) cooperates with the slot (4241), and the second tube (42) can swing on the connecting post (415).

8. The telescopic concealed pump head according to claim 7, characterized in that, The output channel includes a first output channel (411) and a second output channel (421). The first output channel (411) is disposed in the first tube (41), and the second output channel (421) is disposed in the second tube (42). When the nozzle (422) is in the extended state, the first output channel (411) and the second output channel (421) are connected to each other. When the nozzle (422) is in the retracted state, the first output channel (411) and the second output channel (421) are not connected. One end of the first output channel (411) is connected to the output port (22) of the press pump (2). The nozzle (422) is provided with a nozzle (4221), and one end of the second output channel (421) is connected to the nozzle (4221).

9. The telescopic concealed pump head according to claim 8, characterized in that, The connecting post (415) has a connecting hole (4153) on its side. One end of the first output channel (411) is connected to the connecting hole (4153), and one end of the second output channel (421) is connected to the slot (4241). When the nozzle (422) is in the extended state, one end of the second output channel (421) is connected to the connecting hole (4153), so that the first output channel (411) and the second output channel (421) are connected to each other. When the nozzle (422) is in the retracted state, the sleeve (424) blocks the connecting hole (4153), the second output channel (421) is disconnected from the connecting hole (4153), and the first output channel (411) and the second output channel (421) are not connected.

10. The telescopic concealed pump head according to claim 1, characterized in that, The outer cover (3) is provided with a clearance opening (31). When the nozzle (422) extends out of the cover (5), the outer end of the nozzle (422) passes through the clearance opening (31) and extends out of the outer cover (3). When the nozzle (422) is stored inside the cover (5), the clearance opening (31) corresponds to the outer wall of the outer cover (3).

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