A pressing pump with stable resilience

Abstract

The present invention discloses a pressing pump with stable resilience, comprising: a pump body with an accommodation cavity inside; a liquid outlet assembly including a pipe assembly movably and vertically arranged in the accommodation cavity and a pressing head connected to the pipe assembly and extending out of the accommodation cavity, the pressing head being in an extended state when rising relative to the pump body and in a retracted state when descending relative to the pump body; a plastic spring arranged between the pressing head and the pump body and naturally extending within the accommodation cavity; a locking mechanism arranged between the liquid outlet assembly and the pump body, capable of locking the pressing head in the retracted state or unlocking the pressing head from the retracted state; and an abutting member arranged on the liquid outlet assembly, capable of rising with the liquid outlet assembly and abutting against the upper end of the plastic spring. Before the above pressing pump is used for the first time, the plastic spring is always in a naturally extended state, avoiding irreversible deformation caused by long-term compression of the plastic spring and ensuring that the pressing head can rebound stably.

Description

Technical Field

[0001] The present invention relates to a pressing pump with stable resilience. Background Art

[0002] Currently, a general pressing pump includes a body and a liquid outlet pipe group that is movably lifted and lowered inside the body. The liquid outlet pipe group is connected to a pressing head that extends out of the upper part of the body. When the pressing head is pressed down, it can drive the emulsion to be discharged from the pressing head along the liquid outlet pipe group.

[0003] Among them, the pressing head is connected with an elastic member that drives it to move upward and reset. For the purpose of reducing costs and environmental protection, the elastic members of some pressing pumps in the prior art are configured as plastic springs. In order to facilitate the storage and transportation of the pressing pump, a threaded structure is usually provided between the pressing head and the locking cover on the body. By tightening the pressing head, the height position of the pressing head on the body is reduced, preventing the extrusion of the emulsion during transportation and also reducing the volume of the pressing pump. However, in this state, the plastic spring is in a compressed state. If the pressing pump is stored for a long time, the plastic spring is prone to irreversible deformation, resulting in a reduction in the upward reset stroke of the plastic spring, and thus insufficient resilience of the pressing head, affecting the normal liquid discharge of the pressing pump.

[0004] In addition, since a threaded structure is generally provided between the pressing head and the locking cover, an internal thread needs to be provided at the position where the locking cover extends out of the body, resulting in a relatively large size of the locking cover protruding upward from the body, so that the height dimension of the pressing pump in the storage state is still relatively large, which is not conducive to accessing the bottle body of the pressing pump on the shelf. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a pressing pump with stable resilience, which does not compress the plastic spring during storage, avoids irreversible deformation caused by long-term compression of the plastic spring, and ensures that the pressing head can rebound stably.

[0006] A pressing pump with stable resilience according to an embodiment of the present invention includes: a pump body having an accommodation cavity inside; a liquid outlet assembly including a pipe assembly that is movably lifted and lowered in the accommodation cavity and a pressing head that is connected to the pipe assembly and extends out of the accommodation cavity. The pressing head is in an extended state when rising relative to the pump body, and the pressing head is in a retracted state when descending relative to the pump body; a plastic spring disposed between the pressing head and the pump body, naturally extending inside the accommodation cavity; a locking mechanism disposed between the liquid outlet assembly and the pump body, capable of locking the pressing head in the retracted state or unlocking the pressing head from the retracted state; and an abutting member disposed on the liquid outlet assembly, capable of rising with the liquid outlet assembly and abutting against the upper end of the plastic spring.

[0007] A pressing pump with stable resilience according to an embodiment of the present invention has at least the following beneficial effects:

[0008] When the above-mentioned pressing pump is stored and transported, the locking mechanism locks the pressing head in the retracted state. At this time, the plastic spring naturally extends in the accommodating cavity. When the pressing pump is used for the first time, the locking mechanism is unlocked, and the user drives the liquid outlet assembly to rise so that the pressing head is in the extended state. At this time, the abutting member can move above the plastic spring. When applying a downward force to the pressing head, the abutting member can abut downward against the upper end of the plastic spring to compress the plastic spring. Subsequently, the pressing head is reset upward under the restoring force of the plastic spring. When the pressing pump is not used for the first time, the plastic spring is always in a naturally extended state, avoiding irreversible deformation caused by long-term compression of the plastic spring, and ensuring that the pressing head can rebound stably.

[0009] In some embodiments of the present invention, the plastic spring is sleeved outside the pipeline assembly, the lower end of the plastic spring is connected to the pump body, the abutting member is arranged on the outer peripheral wall of the pipeline assembly and can elastically abut against the inner peripheral edge of the plastic spring. When the pressing head rises to the extended state, the abutting member can abut downward against the upper end of the plastic spring.

[0010] In some embodiments of the present invention, the abutting member has a stopping plane extending radially along the pipeline assembly and a guiding inclined plane connected to the stopping plane. The guiding inclined plane inclines radially inward of the pipeline assembly from bottom to top, and the guiding inclined plane faces the inner peripheral edge of the plastic spring.

[0011] In some embodiments of the present invention, the pipeline assembly is provided with a platform portion extending radially. The lower end surface of the platform portion constitutes the stopping plane. A pointed wedge block is provided at the outer end of the platform portion. The guiding inclined plane is arranged on the pointed wedge block. When the pipeline assembly moves upward relative to the plastic spring, the inner peripheral edge of the plastic spring abuts against the pointed wedge block and drives the platform portion to bend downward, so that the guiding inclined plane can elastically abut against the plastic spring.

[0012] In some embodiments of the present invention, the upper end of the plastic spring has a first circular portion. There are multiple abutting members, and the multiple abutting members are circumferentially distributed at intervals around the central axis of the pipeline assembly. Each abutting member can abut downward on the first circular portion.

[0013] In some embodiments of the present invention, the lower end of the plastic spring has a second circular portion, and a plurality of elastic buckle members capable of pressing the second circular portion tightly against the pump body are arranged inside the pump body.

[0014] In some embodiments of the present invention, the pump body includes a main body and a locking cover. The main body has a pump chamber. The locking cover is installed on the upper part of the main body and is located within the pump chamber. The accommodating chamber is provided inside the locking cover. The second circular portion abuts downward against the inner bottom wall of the locking cover. A plurality of elastic snap members are formed on the inner peripheral wall of the locking cover and are circumferentially distributed around the central axis of the second circular portion.

[0015] In some embodiments of the present invention, the pump body includes a main body and a locking cover. The main body has a pump chamber. The locking cover is installed on the upper part of the main body and is located within the pump chamber. The accommodating chamber is provided inside the locking cover. The pipe assembly includes a first pipe body movably passing through the locking cover and a second pipe body connected to the first pipe body and extending downward to the lower part of the pump chamber. The locking mechanism includes a thread protrusion provided on the outer peripheral wall of the second pipe body and a thread groove provided on the inner wall of the main body and matching with the thread protrusion.

[0016] In some embodiments of the present invention, the lower part of the second pipe body has a circular ring portion. The thread protrusion is formed on the outer peripheral wall of the circular ring portion. The lower part of the main body is provided with a cylindrical portion located within the pump chamber. The thread groove is formed on the inner peripheral wall of the cylindrical portion. A pump chamber communicating with the second pipe body is provided within the cylindrical portion. The main body is connected with a liquid suction pipe communicating with the lower end of the pump chamber. A sphere capable of communicating or blocking the liquid suction pipe and the second pipe body is movably arranged within the pump chamber.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a cross-sectional schematic view of the pressing head in a retracted state of an embodiment of the pressing pump with stable resilience of the present invention;

[0020] Figure 2 is Figure 1 a cross-sectional schematic view of the pressing head in an extended state of the embodiment;

[0021] Figure 3 is Figure 2 a partially enlarged schematic view of part A;

[0022] Figure 4 is Figure 2 a partially enlarged schematic view of part B. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0024] In the description of the present invention, it should be understood that with regard to the orientation description, for example, terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0025] In the description of the present invention, the meaning of "a number of" is one or more, the meaning of "a plurality of" is two or more, and understandings such as "greater than", "less than", "exceeding", etc. do not include the recited number, and understandings such as "above", "below", "within", etc. include the recited number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0026] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] See Figures 1 to 4, A pressing pump with stable resilience according to the present invention includes: a pump body 100 having an accommodation cavity 121 inside; a liquid discharging assembly 200 including a pipe assembly 210 movably and vertically arranged in the accommodation cavity 121 and a pressing head 220 connected to the pipe assembly 210 and extending out of the accommodation cavity 121. The pressing head 220 is in an extended state when rising relative to the pump body 100 and in a retracted state when descending relative to the pump body 100; a plastic spring 300 arranged between the pressing head 220 and the pump body 100 and naturally extending inside the accommodation cavity 121; a locking mechanism 400 arranged between the liquid discharging assembly 200 and the pump body 100, capable of locking the pressing head 220 in the retracted state or unlocking the pressing head 220 from the retracted state; and an abutting member 500 arranged on the liquid discharging assembly 200, capable of rising with the liquid discharging assembly 200 and abutting against the upper end of the plastic spring 300.

[0028] When the above pressing pump is stored and transported, the locking mechanism 400 locks the pressing head 220 in the retracted state. At this time, the plastic spring 300 naturally extends in the accommodation cavity 121. When the pressing pump is used for the first time, the locking mechanism 400 is unlocked, and the user drives the liquid discharging assembly 200 to rise so that the pressing head 220 is in the extended state. At this time, the abutting member 500 can move above the plastic spring 300. When applying a downward force to the pressing head 220, the abutting member 500 can abut against the upper end of the plastic spring 300 downward to compress the plastic spring 300. Subsequently, the pressing head 220 resets upward under the restoring force of the plastic spring 300. When the pressing pump is not used for the first time, the plastic spring 300 is always in a naturally extended state, avoiding irreversible deformation caused by long-term compression of the plastic spring 300, ensuring that the pressing head 220 can rebound stably during the use of the pressing pump, and thus guaranteeing the stability of the emulsion discharge amount.

[0029] See Figure 1 and Figure 2, in some embodiments of the present invention, the plastic spring 300 is sleeved outside the pipe assembly 210. The lower end of the plastic spring 300 is connected to the pump body 100. The abutting member 500 is arranged on the outer peripheral wall of the pipe assembly 210 and can elastically abut against the inner peripheral edge of the plastic spring 300. When the push head 220 rises to the extended state, the abutting member 500 can abut downward against the upper end of the plastic spring 300. It can be understood that when the locking mechanism 400 unlocks the retracted state of the push head 220, the user pulls up the push head 220, and the pipe assembly 210 and the push head 220 rise together. Since the lower end of the plastic spring 300 is fixed in the pump body 100, the plastic spring 300 will not move upward following the pipe assembly 210. During this process, the abutting member 500 is in elastic contact with the inner peripheral edge of the plastic spring 300. When the push head 220 rises to the extended state, the abutting member 500 can restore its deformation and abut against the upper end of the plastic spring 300. When the push head 220 is pressed downward, the abutting member 500 acts on the upper end of the plastic spring 300 to compress the plastic spring 300, and then the push head 220 is released. During the process of the plastic spring 300 restoring its deformation upward, the push head 220 returns to the extended state again.

[0030] See Figure 2 and Figure 3 , in some embodiments of the present invention, the abutting member 500 has a stop plane 510 extending radially along the pipe assembly 210 and a guiding inclined plane 520 connected to the stop plane 510. The guiding inclined plane 520 is inclined radially inward of the pipe assembly 210 from bottom to top, and the guiding inclined plane 520 faces the inner peripheral edge of the plastic spring 300. It should be noted that during storage or transportation of the pressing pump, the abutting member 500 is located at the middle position of the plastic spring 300 and is in an elastically deformed state. When the abutting member 500 moves upward relative to the plastic spring 300 together with the pipe assembly 210, the guiding inclined plane 520 moves upward along the inner peripheral edge of the plastic spring 300 until it passes over the upper end of the plastic spring 300. Thereafter, the stop plane 510 can abut against the upper end of the plastic spring 300. By using the above-mentioned abutting member 500, the plastic spring 300 is always in a natural extended state before the pressing pump is used for the first time, avoiding long-term compression of the plastic spring 300.

[0031] See Figure 3 , in some embodiments of the present invention, the pipe assembly 210 is provided with a platform portion extending radially. The lower end surface of the platform portion constitutes the stop plane 510. A pointed wedge block is provided at the outer end of the platform portion. The guiding inclined plane 520 is arranged on the pointed wedge block. When the pipe assembly 210 moves upward relative to the plastic spring 300, the inner peripheral edge of the plastic spring 300 abuts against the pointed wedge block and drives the platform portion to bend downward and deform, so that the abutting member 500 can smoothly pass upward through the plastic spring 300. During this process, the guiding inclined plane 520 remains elastically abutted against the inner peripheral edge of the plastic spring 300.

[0032] See Figure 1 and Figure 2 Figure 2

[0033] See Figure 1 and Figure 2 Figure 2

[0034] See Figure 1 and Figure 2 Figure 2

[0035] See Figure 2 and Figure 4, in some embodiments of the present invention, the pipe assembly 210 includes a first pipe body 211 movably inserted through the lock cover 120 and a second pipe body 212 connected to the first pipe body 211 and extending downward to the lower part of the pump chamber 111. The locking mechanism 400 includes a thread projection 410 provided on the outer peripheral wall of the second pipe body 212 and a thread groove 420 provided on the inner wall of the body 110 and matching with the thread projection 410. The above locking mechanism 400 is provided between the second pipe body 212 and the body 110, avoiding being arranged between the lock cover 120 and the pressing head 220, which helps to reduce the height dimension of the lock cover 120 protruding from the body 110, thereby reducing the overall height of the pressing pump, being beneficial to reducing the storage volume of the pressing pump, and being suitable for being placed on a shelf with a lower height dimension. Specifically, the pressing head 220, the first pipe body 211 and the second pipe body 212 rotate relative to the body 110 as a whole, and the thread projection 410 is separated from the thread groove 420, so that the liquid outlet assembly 200 can freely lift and move relative to the body 110. The locking mechanism 400 has a simple structure and is convenient to use.

[0036] See Figure 4 , in some embodiments of the present invention, the lower part of the second pipe body 212 has an annular part 2121, the thread projection 410 is formed on the outer peripheral wall of the annular part 2121, the lower part of the body 110 is provided with a cylindrical part 112 located in the pump chamber 111, the thread groove 420 is formed on the inner peripheral wall of the cylindrical part 112, a pump chamber 1121 communicating with the second pipe body 212 is provided in the cylindrical part 112, the body 110 is connected with a liquid suction pipe 113 communicating with the lower end of the pump chamber 1121, and a sphere 600 capable of communicating or cutting off the liquid suction pipe 113 and the second pipe body 212 is movably arranged in the pump chamber 1121. The pressing pump with the above layout skillfully arranges the thread projection 410 and the thread groove 420 near the pump chamber 1121, which is beneficial to improving the overall structural compactness.

[0037] The technical features of the above embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0038] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A pressing pump with stable resilience, characterized in that, Comprising: A pump body (100) having an accommodation cavity (121) therein; A liquid outlet assembly (200) including a pipe assembly (210) movably and liftably disposed in the accommodation cavity (121) and a push head (220) connected to the pipe assembly (210) and extending out of the accommodation cavity (121). The push head (220) is in an extended state when rising relative to the pump body (100), and the push head (220) is in a retracted state when descending relative to the pump body (100); A plastic spring (300) disposed between the push head (220) and the pump body (100), naturally extending within the accommodation cavity (121); A locking mechanism (400) disposed between the liquid outlet assembly (200) and the pump body (100), capable of locking the push head (220) in the retracted state or unlocking the push head (220) from the retracted state; An abutting member (500) disposed on the liquid outlet assembly (200), capable of rising with the liquid outlet assembly (200) and abutting against the upper end of the plastic spring (300); the plastic spring (300) is sleeved outside the pipe assembly (210), the lower end of the plastic spring (300) is connected to the pump body (100), the abutting member (500) is disposed on the outer peripheral wall of the pipe assembly (210) and can elastically abut against the inner peripheral edge of the plastic spring (300). When the push head (220) rises to the extended state, the abutting member (500) can abut downward against the upper end of the plastic spring (300).

2. A pressing pump with stable resilience according to claim 1, characterized in that: The abutting member (500) has a stopping plane (510) extending radially along the pipe assembly (210) and a guiding inclined plane (520) connected to the stopping plane (510). The guiding inclined plane (520) is inclined radially inward of the pipe assembly (210) from bottom to top, and the guiding inclined plane (520) faces the inner peripheral edge of the plastic spring (300).

3. A pressing pump with stable resilience according to claim 2, characterized in that: The pipe assembly (210) is provided with a platform portion extending radially. The lower end surface of the platform portion constitutes the stopping plane (510), a wedge block is provided at the outer end of the platform portion, the guiding inclined plane (520) is disposed on the wedge block. When the pipe assembly (210) moves upward relative to the plastic spring (300), the inner peripheral edge of the plastic spring (300) abuts against the wedge block and drives the platform portion to bend and deform downward, so that the guiding inclined plane (520) can elastically abut against the plastic spring (300).

4. A pressing pump with stable resilience according to claim 1 or 2 or 3, characterized in that: The upper end of the plastic spring (300) has a first circular portion (310). A plurality of the abutting members (500) are provided, and the plurality of the abutting members (500) are circumferentially distributed at intervals around the central axis of the pipe assembly (210). Each of the abutting members (500) can abut downward against the first circular portion (310).

5. The resiliently stable pressing pump according to claim 1, wherein: The lower end of the plastic spring (300) has a second circular portion (320). A plurality of elastic snap members (122) capable of pressing the second circular portion (320) tightly against the pump body (100) are provided inside the pump body (100).

6. The resiliently stable pressing pump according to claim 5, wherein: The pump body (100) includes a main body (110) and a locking cover (120). The main body (110) has a pump chamber (111). The locking cover (120) is installed on the upper part of the main body (110) and is located inside the pump chamber (111). The accommodating chamber (121) is provided inside the locking cover (120). The second circular portion (320) abuts downward against the inner bottom wall of the locking cover (120). A plurality of the elastic snap members (122) are formed on the inner peripheral wall of the locking cover (120) and are circumferentially distributed around the central axis of the second circular portion (320).

7. The resiliently stable pressing pump according to claim 1, wherein: The pump body (100) includes a main body (110) and a locking cover (120). The main body (110) has a pump chamber (111). The locking cover (120) is installed on the upper part of the main body (110) and is located inside the pump chamber (111). The accommodating chamber (121) is provided inside the locking cover (120). The pipe assembly (210) includes a first pipe body (211) movably passing through the locking cover (120) and a second pipe body (212) connecting the first pipe body (211) and extending downward to the lower part of the pump chamber (111). The locking mechanism (400) includes a thread projection (410) provided on the outer peripheral wall of the second pipe body (212) and a thread groove (420) provided on the inner wall of the main body (110) and matching with the thread projection (410).

8. The resiliently stable pressing pump according to claim 7, wherein: The lower part of the second pipe body (212) has an annular part (2121), the thread protrusion (410) is formed on the outer peripheral wall of the annular part (2121), the lower part of the body (110) is provided with a cylindrical part (112) located in the pump chamber (111), the thread groove (420) is formed on the inner peripheral wall of the cylindrical part (112), a pump chamber (1121) communicating with the second pipe body (212) is arranged in the cylindrical part (112), the body (110) is connected with a liquid suction pipe (113) communicating with the lower end of the pump chamber (1121), and a sphere (600) capable of communicating or blocking the liquid suction pipe (113) and the second pipe body (212) is movably arranged in the pump chamber (1121).

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