A press pump with a position-limiting member to prevent loss

Abstract

The application discloses a press pump with a limiting piece preventing loss, which comprises a cover body, an arc slot being arranged at the upper end of the cover body, a main body pump being arranged in the cover body, the main body pump comprising a piston rod being movable up and down relative to the cover body, a press head being connected to the upper end of the piston rod and being movable up and down along with the piston rod to have a first path, and a limiting piece having an arc plate being matched with the arc slot, the arc plate being movably arranged in the arc slot, the limiting piece being movable along the arc slot to have a first position and a second position, when the limiting piece is in the first position, the limiting piece enters the first path to limit the descent of the press head, when the limiting piece is in the second position, the limiting piece exits the first path to make the press head suitable for descending, wherein, in the first direction of the hour hand, the distance from the arc slot to the axis of the piston rod gradually decreases, so that when the arc plate moves along the arc slot, the arc slot can guide the arc plate to enter the first position or the second position. In this way, the limiting piece is kept on the cover body at all times and does not need to be taken off, thereby preventing loss.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of push pump, in particular to a push pump with a position-limiting piece that is prevented from being lost. BACKGROUND

[0002] A push pump is generally installed at the opening of a container, and is used to pump out a liquid such as lotion in the container for use by manual pressing operation of a user. Since the pump head is convenient for pressing and extruding the liquid in the container, the liquid is easily pressed and extruded when not in use, which causes waste of the liquid. In the related art, a position-limiting piece is arranged at the neck of the push pump, and the position-limiting piece abuts against the lower end of the push head to limit the push head from being pressed downward. When the position-limiting piece is removed, the push pump is unlocked, and the push head can be pressed downward. However, the position-limiting piece is easily lost after being removed. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the prior art. To this end, the present application provides a push pump with a position-limiting piece that is prevented from being lost, and the position-limiting piece does not need to be removed when the push pump is unlocked.

[0004] According to the push pump with a position-limiting piece that is prevented from being lost, the push pump comprises a cover body for being connected to a container, wherein an arc-shaped groove is arranged at the upper end of the cover body; a main body pump is arranged in the cover body, wherein the main body pump comprises a piston rod that is movable up and down relative to the cover body; a push head is connected to the upper end of the piston rod, and the push head is movable up and down along with the piston rod to have a first path; and a position-limiting piece has an arc-shaped plate that is matched with the arc-shaped groove, wherein the arc-shaped plate is movably arranged in the arc-shaped groove, and the position-limiting piece is movable along the arc-shaped groove to have a first position and a second position. When the position-limiting piece is in the first position, the position-limiting piece enters the first path to limit the push head from being pressed downward. When the position-limiting piece is in the second position, the position-limiting piece exits the first path to allow the push head to be pressed downward. In the first direction of a clock hand, the distance from the arc-shaped groove to the axis of the piston rod gradually decreases, so that when the arc-shaped plate moves along the arc-shaped groove in the first direction of the clock hand, the position-limiting piece is close to the piston rod and enters the first position.

[0005] According to the push pump with a position-limiting piece that is prevented from being lost, at least the following beneficial effects are achieved:

[0006] When the position-limiting piece moves in the first direction of the clock hand, the arc-shaped groove guides the arc-shaped plate to enter the first path, and the upper end surface of the arc-shaped plate abuts against the lower end of the push head to limit the push head from being pressed downward relative to the shell. When the position-limiting piece moves in the direction opposite to the first direction of the clock hand, the arc-shaped groove guides the arc-shaped plate to exit the first path to avoid the push head, so that the push head can be pressed downward. In this way, the position-limiting piece is always kept on the cover body and does not need to be removed, thereby preventing the position-limiting piece from being lost.

[0007] In some embodiments of the present application, the cover is provided with a first arc portion around the piston rod, and when the limiting member is located at the second position, the arc plate is located at the outer periphery of the first arc portion to limit the limiting member from entering the first path.

[0008] In some embodiments of the present application, the outer periphery of the first arc portion is provided with a second arc portion, and the first arc portion and the second arc portion define the arc slot therebetween, and the upper end of the arc slot is provided with a baffle to prevent the arc plate from disengaging from the arc slot.

[0009] In some embodiments of the present application, the cover is provided with a limiting portion, and the limiting member is provided with a hook portion matched with the limiting portion, and the hook portion buckles the limiting portion to stabilize the limiting member at the first position.

[0010] In some embodiments of the present application, the hook portion is connected with the hook portion through a connecting rib, and when the hook portion buckles the limiting portion, the connecting rib drives the arc plate to enter the first path.

[0011] In some embodiments of the present application, the connecting rib is adapted to be elastically deformed, the limiting portion is provided with a first inclined surface, the hook portion is provided with a second inclined surface, and when the limiting member moves to the first position, the second inclined surface abuts against the first inclined surface to make the hook portion buckle the limiting portion after passing over the limiting portion.

[0012] In some embodiments of the present application, the hook portion is connected with a pressing portion, and the pressing portion is used to release the connection between the hook portion and the limiting portion.

[0013] In some embodiments of the present application, one of the cover and the limiting member is provided with a limiting recess, and the other is provided with a limiting protrusion, and the limiting protrusion is clamped in the limiting recess to stabilize the limiting member at the second position.

[0014] In some embodiments of the present application, the outer periphery of the first arc portion is provided with a first cylindrical surface concentrically arranged with the piston rod and a second cylindrical surface tangent to the first cylindrical surface, and the curvature radius of the second cylindrical surface is smaller than that of the first cylindrical surface, and the inner periphery of the second arc portion is provided with a third cylindrical surface, and the second cylindrical surface and the third cylindrical surface are concentrically arranged, and the second cylindrical surface and the third cylindrical surface define the arc slot therebetween.

[0015] In some embodiments of the present application, the cover is provided with a neck portion around the piston rod.

[0016] Additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by practicing the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of a push pump with a limiting component to prevent loss, according to an embodiment of the present invention.

[0019] Figure 2 for Figure 1 Cross-sectional view of the embodiment;

[0020] Figure 3 for Figure 1 A schematic diagram of the embodiment showing the concealed pusher and the limiting member in the second position;

[0021] Figure 4 for Figure 1 A schematic diagram of the embodiment showing the concealed pusher and the limiting member in the first position;

[0022] Figure 5 for Figure 2 Sectional view at point AA;

[0023] Figure 6 for Figure 1 Schematic diagram of the middle cover structure;

[0024] Figure 7 for Figure 1 Another structural diagram of the middle cover;

[0025] Figure 8 for Figure 1 A schematic diagram of the middle limiting component.

[0026] Figure label:

[0027] Cover 100; Arc groove 101; First arc portion 110; Limiting portion 111; First inclined surface 1111; First cylindrical surface 112; Second cylindrical surface 113; Second arc portion 120; Limiting groove 121; Third cylindrical surface 122; Baffle 130; Neck 140;

[0028] Main pump 200; pump body 210; pump chamber 211; piston rod 220; piston component 230; piston seat 231;

[0029] 300 for head massage;

[0030] Limiting component 400; arc plate 410; connecting rib 420; hook 430; second inclined surface 431; pressing part 440; limiting protrusion 450;

[0031] Spring 500; marble 600; liquid guide tube 700. Detailed Implementation

[0032] Embodiments of the present application are described below in detail with reference to the accompanying drawings, wherein the same or similar components or components having the same or similar functions are denoted by the same or similar reference numerals throughout the drawings. The embodiments described below by reference to the drawings are exemplary and are for the purpose of explaining the present application only, and are not to be understood as limiting the present application.

[0033] In the description of the present application, it should be understood that the orientation description, such as up, down, front, back, left, right, etc., indicates the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or component referred to must have a particular orientation; be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0034] In the description of the present application, if there is a description of first; second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of technical features indicated.

[0035] In the description of the present application, unless otherwise explicitly limited, the words such as provided; installed; connected, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0036] Referring to Figures 1 to 3 The pressing pump with a limiting piece to prevent loss according to an embodiment of the present application includes a cover body 100, a main body pump 200, a pressing head 300, and a limiting piece 400.

[0037] The cover body 100 is used to be connected with a container, and an arc groove 101 is provided at the upper end of the cover body 100. Specifically, the container can be a bottle body for containing lotion such as shampoo or shower gel, and the cover body 100 is screwed on the bottle opening of the bottle body.

[0038] The main body pump 200 is arranged on the cover body 100, and the main body pump 200 includes a piston rod 220 which is movable up and down relative to the cover body 100. The pressing head 300 is connected to the upper end of the piston rod 220, and the pressing head 300 can be lifted and lowered with the piston rod 220 to have a first path.

[0039] Specifically, the main pump 200 comprises a pump body 210 fixedly connected with the cover 100, a pump cavity 211 is arranged in the pump body 210, a piston 230 is arranged in the pump cavity 211 and can be lifted, the piston 230 is connected with the lower end of a piston rod 220 through a piston seat 231. A first through hole is arranged on the upper end surface of the cover 100, the upper end of the piston rod 220 penetrates through the first through hole and is connected with a push head 300. A spring 500 is arranged between the piston rod 220 and the pump body 210, and the spring 500 can drive the piston rod 220 to ascend relative to the pump body 210.

[0040] A liquid inlet is arranged at the lower end of the pump cavity 211, a ball 600 is arranged in the pump cavity 211 and used for shielding the liquid inlet, the liquid in the container can push away the ball 600 to enter the pump cavity 211 from the liquid inlet, and the solution in the pump cavity 211 cannot flow back to the container through the liquid inlet. A liquid guide pipe 700 is connected with the liquid inlet, so that the solution at the bottom of the container can be pumped out.

[0041] The push head 300, the piston rod 220 and the piston seat 231 are sequentially connected, and all have a pipe cavity arranged therein and are communicated to form a liquid outlet channel, the liquid outlet channel has a first port formed on the outer circumferential surface of the piston seat 231, and the liquid outlet channel is communicated with the pump cavity 211 through the first port. The piston 230 is movably arranged on the piston seat 231, and the piston 230 can descend relative to the piston seat 231 to shield the first port or ascend relative to the piston seat 231 to open the first port.

[0042] It can be understood that when the spring 500 drives the piston rod 220 to ascend, the piston 230 is temporarily kept stationary due to friction between the piston 230 and the side wall of the pump cavity 211, the piston seat 231 and the piston rod 220 ascend relative to the piston 230 to a position where the piston 230 shields the first port, then the piston rod 220 and the piston 230 are kept relatively stationary and continue to ascend together. The pressure in the pump cavity 211 decreases, and the liquid in the container pushes away the ball 600 to enter the pump cavity 211; when the user presses the push head 300, the piston 230 is temporarily kept stationary due to friction between the piston 230 and the side wall of the pump cavity 211, the piston seat 231 and the piston rod 220 descend relative to the piston 230 to a position where the piston 230 opens the first port, then the piston rod 220 and the piston 230 are kept relatively stationary and continue to descend together, the liquid in the pump cavity 211 enters the liquid outlet channel through the first port and flows out through the liquid outlet channel for the user to use.

[0043] The limiting piece 400 has a circular arc plate 410 matched with the circular arc groove 101. The circular arc plate 410 is movably arranged in the circular arc groove 101. The limiting piece 400 can move along the circular arc groove 101 to have a first position and a second position. When the limiting piece 400 is in the first position, the limiting piece 400 enters the first path to limit the lowering of the pressing head 300. When the limiting piece 400 is in the second position, the limiting piece 400 exits the first path to make the pressing head 300 suitable for lowering.

[0044] Wherein, along the first clockwise direction, the distance from the circular arc groove 101 to the axis of the piston rod 220 gradually decreases, so that when the circular arc plate 410 moves along the circular arc groove 101 in the first clockwise direction, the limiting piece 400 approaches the piston rod 220 and enters the first position. It should be noted that the first clockwise direction is the direction in which the limiting piece 400 moves from the second position to the first position. In this embodiment, the first clockwise direction is the counterclockwise direction. In some other embodiments, the first clockwise direction can also be the clockwise direction.

[0045] Specifically, the circular arc groove 101 is eccentrically arranged relative to the piston rod 220. Both ends of the circular arc groove 101 are throughly arranged. Both ends of the circular arc plate 410 can extend out of the circular arc groove 101.

[0046] It can be understood that when the limiting piece 400 moves in the first clockwise direction, the circular arc groove 101 guides the circular arc plate 410 to enter the first path. The upper end surface of the circular arc plate 410 abuts against the lower end of the pressing head 300 to limit the lowering of the pressing head 300 relative to the shell. When the limiting piece 400 moves in the direction opposite to the first clockwise direction, the circular arc groove 101 guides the circular arc plate 410 to exit the first path to avoid the pressing head 300, so that the pressing head 300 can be lowered. In this way, the limiting piece 400 is always kept on the cover body 100 and does not need to be removed, preventing loss.

[0047] Referring to Figure 3 In some embodiments of the present application, the cover body 100 is provided with a first circular arc portion 110 around the piston rod 220. When the limiting piece 400 is in the second position, the circular arc plate 410 is located outside the first circular arc portion 110 to limit the limiting piece 400 from entering the first path. In this way, the circular arc plate 410 can be prevented from deforming or being disturbed by external interference to enter the first path, ensuring that the lifting of the pressing head 300 is not disturbed by the limiting piece 400 when the limiting piece 400 is in the second position.

[0048] Referring to Figure 3 and Figure 4As shown, in some embodiments of the present application, the outer periphery of the first arc portion 110 is provided with a second arc portion 120, and the first arc portion 110 and the second arc portion 120 define an arc slot 101 therebetween, and the upper end of the arc slot 101 is provided with a baffle 130 to prevent the arc plate 410 from being separated from the arc slot 101. In this way, the limiting piece 400 can be retained on the cover body 100, preventing the limiting piece 400 from being lost. Specifically, the first arc portion 110, the second arc portion 120, the baffle 130, and the cover body 100 are integrally formed by injection molding, thereby reducing the assembly process and improving production efficiency.

[0049] Referring to Figure 3 and Figure 4 As shown, in some embodiments of the present application, the cover body 100 is provided with a limiting portion 111, and the limiting piece 400 has a hook portion 430 cooperating with the limiting portion 111, and the hook portion 430 buckles the limiting portion 111 to stabilize the limiting piece 400 in the first position. Specifically, the limiting portion 111 is arranged at the first arc portion 110 and located at the end away from the arc slot 101. It can be understood that when the limiting piece 400 is in the first position, one end of the arc plate 410 is limited in the arc slot 101, and the other end is buckled to the limiting portion 111 through the hook portion 430 to be connected to the first arc portion 110. In this way, the limiting piece 400 can be stabilized in the first position. Moreover, the hook portion 430 buckling the limiting portion 111 facilitates the connection and separation between the extending end of the arc plate 410 and the first arc portion 110.

[0050] Referring to Figure 4 and Figure 8 As shown, in some embodiments of the present application, the hook portion 430 is connected to the hook portion 430 through a connecting rib 420, and when the hook portion 430 buckles the limiting portion 111, the connecting rib 420 drives the arc plate 410 to enter the first path. Specifically, the arc plate 410 has a certain elasticity, and after the hook portion 430 buckles the hook portion 430, the connecting rib 420 will drive the arc slot to bend and deform towards the piston rod 220 and generate an elastic force, and the elastic force generated by the arc plate 410 will drive the hook portion 430 to buckle the limiting portion 111, preventing the two from being loosened due to external interference and improving stability.

[0051] Referring to Figure 3 and Figure 4 As shown, in some embodiments of the present application, the connecting rib 420 is adapted to elastically deform, the limiting portion 111 has a first inclined surface 1111, the hook portion 430 has a second inclined surface 431, and when the limiting piece 400 moves to the first position, the second inclined surface 431 abuts against the first inclined surface 1111 to enable the hook portion 430 to buckle the limiting portion 111 after passing over the limiting portion 111. In this way, the hook portion 430 can be buckled to the limiting portion 111 conveniently.

[0052] Referring to Figure 3 andFigure 8 In some embodiments of the present application, the hook portion 430 is connected with a pressing portion 440, which is used to release the connection between the hook portion 430 and the limiting portion 111. Specifically, as shown in Figure 3 The pressing portion 440 and the hook portion 430 are arranged on two sides of the connecting rib 420, so that the pressing portion 440 and the hook portion 430 form a lever with the connecting rib 420 as the fulcrum. When the user presses the pressing portion 440, the hook portion 430 is raised outward to be separated from the limiting portion 111. In this way, the hook portion 430 can be easily separated from the limiting portion 111.

[0053] As shown in Figure 4 and Figure 6 In some embodiments of the present application, one of the cover 100 and the limiting member 400 is provided with a limiting recess 121, and the other is provided with a limiting protrusion 450. The limiting protrusion 450 is connected to the limiting recess 121 to stabilize the limiting member 400 in the second position. In this way, the limiting member 400 can be prevented from being disturbed to move to the first position, and the operation of the pressing head 300 can be ensured not to be disturbed. Specifically, as shown in Figure 3 The limiting recess 121 is arranged on the outer circumferential surface of the second arc portion 120, the connecting rib 420 is provided with a side extending portion, and the limiting protrusion 450 is arranged on the side extending portion close to the limiting recess 121. The limiting recess 121 and the limiting protrusion 450 are both strips arranged in the vertical direction. In this way, the manufacturing error in the vertical direction can be overcome to ensure the cooperation of the limiting recess 121 and the limiting protrusion 450.

[0054] As shown in Figure 6 and Figure 7 In some embodiments of the present application, the outer circumferential surface of the first arc portion 110 has a first cylindrical surface 112 concentrically arranged with the piston rod 220 and a second cylindrical surface 113 tangent to the first cylindrical surface 112. The curvature radius of the second cylindrical surface 113 is smaller than that of the first cylindrical surface 112. The inner circumferential surface of the second arc portion 120 has a third cylindrical surface 122. The second cylindrical surface 113 and the third cylindrical surface 122 are concentrically arranged, and the circular arc groove 101 is defined between the second cylindrical surface 113 and the third cylindrical surface 122. In this way, the structure is simple and easy to manufacture.

[0055] As shown in Figure 2 and Figure 6 The cover 100 is provided with a neck portion 140 arranged around the piston rod 220. Specifically, as shown in Figure 4As shown, the neck 140 is a circular annular column structure arranged concentrically with the piston rod 220, when the limiting member 400 is located at the first position, the arc plate 410 abuts against the outer circumferential surface of the neck 140, thus, the support of the neck 140 can improve the strength and stability of the arc plate 410. Moreover, the neck 140 plays a guiding role to the hook portion 430, it can be understood that the hook portion 430 is arranged at the extending end of the arc plate 410, and the arc plate 410 has a certain elasticity, if there is no neck 140, the hook portion 430 cannot accurately find the position of the limiting portion 111 and be buckled on the limiting portion 111. In the embodiment, the neck 140 is arranged on the cover body 100, the user can abut the arc plate 410 against the neck 140, the hook portion 430 can be accurately aligned with the limiting portion 111, the user only needs to push the hook portion 430 along the first clock direction to buckle the hook portion 430 on the limiting portion 111, which is convenient and fast.

[0056] The above has made a detailed description of the embodiments of the present application in combination with the drawings, but the present application is not limited to the above embodiments, within the knowledge range of the ordinary skilled in the art, various changes can be made without departing from the purpose of the present application.

Claims

1. A press pump with a position-limiting member to prevent loss, characterized in that , comprising: a cover (100) for connecting with a container, an upper end of the cover (100) being provided with a circular arc groove (101); a main body pump (200) arranged in the cover (100), the main body pump (200) comprising a piston rod (220) movable up and down relative to the cover (100); a press head (300) connected to an upper end of the piston rod (220), the press head (300) being movable up and down with the piston rod (220) to have a first path; a limiting piece (400) having a circular arc plate (410) matched with the circular arc groove (101), the circular arc plate (410) being movably arranged in the circular arc groove (101), the limiting piece (400) being movable along the circular arc groove (101) to have a first position and a second position, the limiting piece (400) entering the first path to limit the descent of the press head (300) when the limiting piece (400) is in the first position, the limiting piece (400) exiting the first path to make the press head (300) suitable for descending when the limiting piece (400) is in the second position; wherein, in a first clockwise direction, the distance from the circular arc groove (101) to the axis of the piston rod (220) gradually decreases, so that when the circular arc plate (410) moves along the circular arc groove (101) in the first clockwise direction, the limiting piece (400) is close to the piston rod (220) and enters the first position; the cover (100) is provided with a first circular arc part (110) around the piston rod (220), when the limiting piece (400) is in the second position, the circular arc plate (410) is located outside the first circular arc part (110) to limit the limiting piece (400) from entering the first path; an outer periphery of the first circular arc part (110) is provided with a second circular arc part (120), the first circular arc part (110) and the second circular arc part (120) define the circular arc groove (101), an upper end of the circular arc groove (101) is provided with a baffle (130) to prevent the circular arc plate (410) from leaving the circular arc groove (101); the cover (100) is provided with a limiting part (111), the limiting piece (400) has a hook part (430) matched with the limiting part (111), the hook part (430) buckles the limiting part (111) to make the limiting piece (400) stable in the first position.

2. The press pump with a limiting piece to prevent loss according to claim 1, wherein the hook part (430) is connected with the hook part (430) through a connecting rib (420), when the hook part (430) buckles the limiting part (111), the connecting rib (420) drives the circular arc plate (410) to enter the first path.

3. The press pump with a limiting piece to prevent loss according to claim 2, wherein The connecting rib (420) is suitable for elastic deformation, the limiting part (111) has a first inclined surface (1111), the hook part (430) has a second inclined surface (431), when the limiting part (400) moves to the first position, the second inclined surface (431) abuts against the first inclined surface (1111) to make the hook part (430) buckled on the limiting part (111) after passing the limiting part (111).

4. The press pump with a limiting part for preventing loss according to claim 1, characterized in that, The hook part (430) is connected with a pressing part (440), and the pressing part (440) is used for releasing the connection between the hook part (430) and the limiting part (111).

5. The press pump with a limiting part for preventing loss according to claim 1, characterized in that, One of the cover (100) and the limiting part (400) is provided with a limiting recess (121), and the other is provided with a limiting protrusion (450), the limiting protrusion (450) is clamped in the limiting recess (121) to make the limiting part (400) stable in the second position.

6. The press pump with a limiting part for preventing loss according to claim 1, characterized in that, The outer periphery of the first arc part (110) has a first cylindrical surface (112) concentrically arranged with the piston rod (220) and a second cylindrical surface (113) tangent to the first cylindrical surface (112), the curvature radius of the second cylindrical surface (113) is smaller than that of the first cylindrical surface (112), the inner periphery of the second arc part (120) has a third cylindrical surface (122), the second cylindrical surface (113) and the third cylindrical surface (122) are concentrically arranged, and the circular arc groove (101) is defined between the second cylindrical surface (113) and the third cylindrical surface (122).

7. The press pump with a limiting part for preventing loss according to claim 1, characterized in that, The cover (100) is provided with a neck part (140) arranged around the piston rod (220).

Images