Elastic reset mechanism and pressing pump comprising same

Abstract

An elastic reset mechanism is installed in a pressing pump and supported between a movable part and a fixed part of the pressing pump, and the elastic reset mechanism comprises an elastic unit. Wherein the elastic unit is provided and mounted such that, when the movable member is pressed downward with respect to the fixed member, a distance between an upper portion and a lower portion of the elastic unit is increased, so that the elastic unit is stretched. The invention further discloses a pressing pump comprising the elastic reset mechanism. The elastic reset mechanism and the pressing pump comprising the elastic reset mechanism solve the problems that the pressing pump is heavy in pressing hand feeling and cannot rebound to the top.

Description

Technical Field

[0001] The present application relates to the field of packaging of liquid or semi-liquid products, and in particular to a press pump for dispensing products from a container, and in particular to the design of an elastic reset mechanism in the press pump. Background Art

[0002] Pressing pumps are widely used in various fields such as daily chemical products, medicines, and foods, and are used to dispense products from containers containing liquid or semi-liquid products for consumers to use. Pressing pumps include an elastic reset mechanism, which can reset the movable parts such as the pressing head that are pressed downward upward to their standby position. Generally speaking, metal springs are used as the elastic reset mechanism in existing pressing pumps.

[0003] With the continuous improvement of environmental protection requirements, in order to achieve resource recycling, some manufacturers have begun to use plastic springs instead of metal springs. In this way, after use, the old pump can be easily recycled without disassembling the metal spring to separate it from other plastic material parts of the pump.

[0004] During use, it is found that plastic springs usually have two problems. First, the elasticity of plastic springs is smaller than that of metal springs, and the pressing force required to press down on the plastic spring is larger, so the user feels heavy when pressing down during use. Second, although the pressing force required to press down is large, the elastic force generated by the plastic spring after being compressed and deformed is relatively small, resulting in the plastic spring being unable to rebound into place after being pressed. This will cause the amount of product dispensed each time to fail to meet the requirements, and may even cause the liquid output of the press pump to gradually decrease.

[0005] Therefore, in the art, there is a need to improve the structure of a pressing pump, specifically, the elastic reset mechanism in the pressing pump, so as to overcome the technical problems existing in the elastic reset mechanism in the form of a plastic spring in the prior art as described above. Summary of the invention

[0006] This application is made to solve the technical problems existing in the above prior art. The purpose of this application is to provide an elastic reset mechanism with an improved structure, which can be made of plastic and can provide sufficient resilience to fully restore the pressing pump to its pre-pressing state.

[0007] The present application provides an elastic reset mechanism, which is installed in a pressing pump and supported between a movable part and a fixed part of the pressing pump, wherein the elastic reset mechanism includes an elastic unit. The elastic unit is arranged and installed such that when the movable part is pressed downward relative to the fixed part, the distance between the upper part and the lower part of the elastic unit increases, thereby the elastic unit is stretched.

[0008] The elastic reset mechanism of this structure can provide sufficient rebound force for the pressing pump, and the user feels lighter when pressing it, thereby solving the problem of not rebounding to the top.

[0009] Preferably, the elastic reset mechanism comprises an upper spring coil and a lower spring coil, and the elastic unit is connected between the upper spring coil and the lower spring coil. The upper spring coil and the lower spring coil can be used to be sleeved on the piston rod of the pressing pump to help fix the elastic reset mechanism.

[0010] Preferably, the elastic reset mechanism comprises two or more elastic units. The elastic units may be arranged in a mirror-symmetrical manner, for example.

[0011] The present application also discloses a compression pump, which includes a movable part and a fixed part, wherein the movable part includes a pressure head and a piston rod connected below the pressure head, and the fixed part includes a tooth sleeve and a cylinder fixedly connected together, wherein the piston rod extends into the cylinder. The compression pump is provided with the elastic reset mechanism as described above.

[0012] In a specific embodiment, the upper end of the elastic reset mechanism is supported below the pressure head, and the lower end of the elastic reset mechanism is supported on the top surface of the brace.

[0013] Preferably, the spring return mechanism comprises an upper spring coil and a lower spring coil, and the elastic unit is connected between the upper spring coil and the lower spring coil.

[0014] Preferably, at least one of the upper coil of the spring and the lower coil of the spring is formed with a notch, which allows the elastic reset mechanism to be easily assembled on the pressing pump.

[0015] Preferably, the elastic reset mechanism further comprises:

[0016] an upper lever portion, through which the end of the lower half of the elastic unit is connected to the upper coil of the spring; and

[0017] The lower lever portion, the end of the upper half of the elastic element is connected to the spring lower coil via the lower lever portion.

[0018] By providing the upper lever part and the lower lever part, the lever principle is utilized, so that the force required for pressing is smaller.

[0019] Preferably, the upper lever portion and the lower lever portion include at least one of the following structures:

[0020] A width of at least one of the upper lever portion and the lower lever portion is set to be smaller than a width of the elastic unit;

[0021] At least one of the upper lever portion and the lower lever portion includes a bent portion;

[0022] One of the upper lever portion and the lower lever portion is provided with an opening portion, and the other of the upper lever portion and the lower lever portion extends through the opening portion; and

[0023] A hinge portion is formed at at least one of a position between the upper lever portion and the upper coil of the spring and a position between the lower lever portion and the lower coil of the spring.

[0024] Preferably, the compression pump comprises two or more resetting elastic reset mechanisms.

[0025] In another specific implementation structure, a snap-fitting portion is formed on the inner surface of the cylinder or the outer surface of the cylinder, and the upper end of the elastic reset mechanism is fixedly fitted on the snap-fitting portion;

[0026] The lower end of the elastic reset mechanism is fixedly matched on the piston rod.

[0027] Preferably, the pressing pump further comprises a spring fixing member, which is fixedly connected to the piston rod, a convex block is formed on the outer surface of the spring fixing member, and the lower end of the elastic reset mechanism is snap-fitted to the convex block.

[0028] More preferably, a limiting portion is further provided at the bottom of the spring fixing component, and the limiting portion prevents the lower end of the elastic reset mechanism from escaping from the lower end of the spring fixing component.

[0029] In a specific structure, the elastic component of the elastic reset mechanism includes a plurality of elastic units and a connecting portion connected between the elastic units.

[0030] Preferably, the elastic unit includes at least one of the following structures:

[0031] A weak portion is formed between the upper side and the lower side of the elastic unit;

[0032] The upper side of the elastic unit is arc-shaped, and the lower side of the elastic unit is straight-line-shaped;

[0033] The elastic unit is at least one of an ellipse and a rectangle.

[0034] In a specific structure, the engaging portion is formed on the inner surface of the cylinder, so that the elastic return mechanism is arranged in the cylinder.

[0035] In another specific structure, the snap-fitting portion is formed on the outer surface of the cylinder, the elastic reset mechanism is sleeved on the outside of the cylinder, and a longitudinally extending narrow groove is formed on the peripheral wall of the cylinder. The protrusion fits into the narrow groove and extends from the inside of the cylinder to the outside.

[0036] Preferably, the pressing pump may be a capsule pump, wherein a space is formed between the pressure head and the braces, a capsule body is installed in the space, and an elastic reset mechanism is arranged in the capsule body.

[0037] The pressing pump may be a lotion pump. In addition, the pressing pump may also be a foam pump, a vacuum pump, or the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings show non-limiting preferred implementation structures of the present invention, and the features and advantages of the present invention can be more clearly seen in conjunction with the accompanying drawings.

[0039] Figure 1 A side view of the compression pump of the first embodiment of the present application is shown, wherein the compression pump is in its uncompressed state.

[0040] Figure 2 Shows Figure 1 Another side view of the compression pump, wherein the compression pump is in its compressed state.

[0041] Figure 3a to 3c Shows Figure 1 Various views of the elastic reset mechanism in the pressing pump, wherein Figure 3a is a front view, Figure 3b is a side view, Figure 3c It is a stereogram.

[0042] Figures 4 to 9 Various alternative embodiments of the elastic return mechanism are shown.

[0043] Fig.10 A side view of a pressing pump according to a second embodiment of the present application is shown.

[0044] Figures 11a to 11c Shows Fig.10 Various views of the elastic reset mechanism of the pressing pump in Fig.11a is a front view, Fig.11b is a side view, Fig.11c It is a stereogram.

[0045] Fig.12 A side view of a pressing pump according to a third embodiment of the present application is shown.

[0046] Fig.13 A perspective view showing a pressing pump according to a fourth embodiment of the present application.

[0047] Fig.14 Shows Fig.13 A partially exploded perspective view of a compression pump.

[0048] Fig.15a and 15b Shows Fig.13 Various views of the elastic reset mechanism of the pressing pump, wherein Fig.15a is a front view, Fig.15b It is a stereogram.

[0049] Fig.16a The elastic return mechanism is shown in a relaxed state.

[0050] Fig.16b The compression pump is shown in a stretched state.

[0051] Figures 17-20 An alternative implementation structure of the elastic return mechanism in the fourth embodiment is shown.

[0052] Fig.21 A perspective view showing a pressing pump according to a fifth embodiment of the present application.

[0053] Fig. 22 Shows Fig.21 A partially exploded perspective view of a compression pump.

[0054] Fig.23 A cross-sectional view of a pressing pump according to a sixth embodiment of the present application is shown, wherein the pressing pump is a bladder pump.

[0055] Fig.24 A cross-sectional view of a foam pump having an elastic return mechanism of the present application is shown.

[0056] Fig.25 A cross-sectional view of a vacuum pump having the elastic return mechanism of the present application is shown.

[0057] (Explanation of symbols)

[0058] 100 pumps

[0059] 110 pressure head

[0060] 120 braces

[0061] 130 cylinders

[0062] 140 piston rod

[0063] 150 elastic reset mechanism

[0064] 151 Spring coil

[0065] 152 spring lower coil

[0066] 153 elastic unit

[0067] 153-1 First end portion (of elastic unit)

[0068] 153-2 Second end portion (of elastic unit)

[0069] 154 upper lever

[0070] 155 lower lever

[0071] 156 Notch

[0072] 157 opening

[0073] 200 pumps

[0074] 250 elastic reset mechanism

[0075] 251 spring upper coil

[0076] 252 spring lower coil

[0077] 253 elastic unit

[0078] 254 hinge part

[0079] 300 pumps

[0080] 350 elastic reset mechanism

[0081] 351 spring coil

[0082] 352 spring lower coil

[0083] 400 pumps

[0084] 410 pressure head

[0085] 420 braces

[0086] 430 cylinder

[0087] 431 card matching department

[0088] 440 piston rod

[0089] 450 elastic return mechanism

[0090] 451 spring coil

[0091] 452 spring lower coil

[0092] 453 elastic member

[0093] 454 elastic unit

[0094] 455 connection

[0095] 456 Weak Points

[0096] 460 Spring fixing member

[0097] 461 Bump

[0098] 462 limiter

[0099] 500 pumps

[0100] 510 pressure head

[0101] 520 braces

[0102] 530 cylinder

[0103] 531 convex strip

[0104] 532 slots

[0105] 550 elastic reset mechanism

[0106] 551 spring coil

[0107] 552 spring lower coil

[0108] 560 spring fixing member

[0109] 561 Bump

[0110] 562 limiter

[0111] 600 pumps

[0112] 610 pressure head

[0113] 620 pressure head

[0114] 630 capsule

[0115] 650 elastic reset mechanism

[0116] 700 Foam Pump

[0117] 800 Vacuum Pump DETAILED DESCRIPTION

[0118] The specific implementation of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the drawings only show preferred embodiments of the present invention, which do not constitute a limitation on the scope of the present invention. Those skilled in the art can make various obvious modifications, variations, and equivalent substitutions to the present invention based on the embodiments shown in the drawings, and the technical features of the different embodiments described below can be arbitrarily combined with each other without contradiction, which all fall within the scope of protection of the present invention.

[0119] <First Embodiment>

[0120] Figures 1 to 9 The exemplary structure of the pressing pump 100 and its components according to the first embodiment of the present application is shown.

[0121] like Figure 1 As shown, the pressing pump 100 includes a pressure head 110, a toothed sleeve 120 and a cylinder 130, the toothed sleeve 120 and the cylinder 130 are fixedly connected together, and a piston rod 140 is connected below the pressure head 110, and the piston rod 140 extends into the cylinder 130. The pressure head 110 can move back and forth along the up and down direction relative to the toothed sleeve 120 and the cylinder 130 with the piston rod 140. Therefore, the pressure head 110 and the piston rod 140 are movable parts, and the toothed sleeve 120 and the cylinder 130 are fixed parts.

[0122] The pressing pump 100 also includes an elastic reset mechanism 150, which is made of plastic and is arranged between the movable part and the fixed part of the pressing pump 100. For example, as shown in the figure, the elastic reset mechanism 150 is supported between the lower side of the pressure head 110 and the top surface of the brace 120.

[0123] When the pressure head 110 is pressed downward, the elastic restoring mechanism 150 is deformed by pressure, so that a rebound force is accumulated in the elastic restoring mechanism 150. Figure 2 When the pressing force applied to the pressing head 110 is removed, the rebound force accumulated in the elastic reset mechanism 150 causes the pressing head 110 to return to the position of the upper dead point of its stroke, so as to be used next time.

[0124] Figure 3a to 3c Shows Figure 1 1 and 1. Different views of the elastic reset mechanism 150 of the pressing pump 100 in FIG. The elastic reset mechanism 150 includes an upper spring coil 151, a lower spring coil 152 and an elastic unit 153. Preferably, an upper lever portion 154 is provided between the elastic unit 153 and the upper spring coil 151, or the upper lever portion 154 is connected between one end of the elastic unit 153 and the upper spring coil 151. Similarly, a lower lever portion 155 is provided between the lower spring coil 152 and the other end of the elastic unit 153.

[0125] In the structure shown in the figure, the elastic unit 153 is annular, and its first end 153-1 located in the upper half points downward and is connected to the lower lever portion 155, and the second end 153-2 located in the lower half points upward and is connected to the upper lever portion 154. Figure 1 and 2 As can be seen in FIG. 1 , the upper spring coil 151 is supported below the pressure head 110, and the lower spring coil 152 is supported on the top of the dental brace 120, so that when the pressure head 110 is pressed downward, the upper spring coil 151 and the lower spring coil 152 are close to each other, and the distance between the first end 153-1 and the second end 153-2 is increased through the lever action of the upper lever portion 154 and the lower lever portion 155. In this process, the elastic unit 153 is elastically opened, and elastic force is accumulated in the elastic unit 153.

[0126] After the pressure applied to the pressure head 110 is removed, under the action of the elastic force of the elastic unit 153, the distance between the first end 153-1 and the second end 153-2 is reduced, so that the elastic reset mechanism 150 as a whole is restored to the state before being pressed, and then the pressure head 110 is pushed to its upper standby position.

[0127] Preferably, in order to increase the elastic force generated by the deformation of the elastic unit 153 , the width of the elastic unit 153 is set to be wider, for example, wider than the upper lever portion 154 and the lower lever portion 155 .

[0128] Further preferably, the upper lever portion 154 and the lower lever portion 155 may also be made of elastic material, and may also participate in generating elastic deformation when subjected to pressure.

[0129] In addition to the structure of the elastic restoring mechanism 150 described above, the elastic restoring mechanism 150 may also be configured as other structures. Figures 4 to 9 Various alternative embodiments of the structure of the elastic return mechanism 150 are shown.

[0130] For example, Figure 4 The elastic unit 153 shown in the figure is substantially C-shaped, and two sides of the notch of the C-shape are respectively the first end 153 - 1 and the second end 153 - 2 of the elastic unit 153 . Figure 5 A portion of the elastic unit 153 of the elastic reset mechanism 150 shown in FIG. 1 is substantially V-shaped. In other words, the elastic unit 153 includes a straight portion, while the portion thereof connected to the upper lever portion 154 and the lower lever portion 155 is preferably arc-shaped.

[0131] exist Figure 6 In the embodiment, a notch 156 is formed on the spring upper coil 151 and the spring lower coil 152 of the elastic reset mechanism 150. By forming the notch 156, the spring upper coil 151 can be easily matched to the press head 110, and the spring lower coil 152 can be matched to the dental brace 120.

[0132] exist Figure 7 In the embodiment, the elastic unit 153 of the elastic reset mechanism 150 has the same width as the upper lever portion 154 and the lower lever portion 155. Figure 7 The elastic reset mechanism 150 shown does not include the upper spring coil 151 and the lower spring coil 152, that is, the upper spring coil 151 and the lower spring coil 152 in the present application are optional, and the free ends of the upper lever portion 154 and the lower lever portion 155 can be directly supported or connected to the movable parts and fixed parts of the pressing pump 100.

[0133] exist Figure 8 In the structure shown in , the upper lever portion 154 and the lower lever portion 155 are formed with a bent portion respectively. The upper lever portion 154 and the lower lever portion 155 with the bent portion can make the force acting on the upper lever portion 154 and the lower lever portion 155 roughly along the longitudinal direction, reduce the lateral component force, thereby improving the efficiency of converting the pressing force into the spring elastic force.

[0134] exist Fig. 9In the structure shown in FIG. 1 , an opening portion 157 is formed on the lower lever portion 155 , and the upper lever portion 154 extends upward through the opening portion 157 .

[0135] <Second Embodiment>

[0136] Figures 10-11c The pressing pump 200 of the second embodiment of the present application is shown. Unless otherwise described or conflicting, the specific structure described above with respect to the first embodiment is also applicable to the second embodiment. In the following description, the same structure will not be described in detail, and the structure of the second embodiment different from the first embodiment will be specifically described.

[0137] like Fig.10 As shown, the compression pump 200 includes an elastic reset mechanism 250. Figures 11a to 11c As shown in the figure, the elastic reset mechanism 250 includes a spring upper coil 251, a spring lower coil 252 and two elastic units 253 connected between the spring upper coil 251 and the spring lower coil 252. The two elastic units 253 can be connected to the spring upper coil 251 and the spring lower coil 252, for example, through an upper lever portion and a lower lever portion, respectively. Alternatively, as described in the first embodiment, the structure of the upper lever portion and the lower lever portion can also be omitted. The two elastic units 153 can be arranged mirror-symmetrically relative to each other, as shown in the figure.

[0138] In addition, if Fig.11a As schematically shown in FIG. 1 , the two elastic units 153 are in different planes. However, those skilled in the art will appreciate that the two elastic units 153 may also be in the same plane. All of these are within the scope of the present application.

[0139] Furthermore, according to actual application scenarios and usage requirements, such as requirements for elastic force, the elastic reset mechanism 150 may include a greater number of elastic units 253, such as three, four, etc.

[0140] In addition, preferably, a hinge portion 254 is formed at the connection between the elastic unit 253 and the spring upper coil 251. When subjected to a pressing force, the hinge portion 254 deforms first, and then the elastic unit 253 deforms. In this way, the applied pressing force can be reduced, so that the pressing pump 200 is easier to be pressed downward.

[0141] Likewise, a hinge portion 254 may also be formed at the connection portion between the elastic unit 253 and the spring lower coil 252 .

[0142] <Third Embodiment>

[0143] Fig.12The pressing pump 300 of the third embodiment of the present application is shown. Unless otherwise described or conflicting, the specific structures described above with respect to the first and second embodiments also apply to the third embodiment. In the following description, the same structures will not be described in detail, and the structures different from the first and second embodiments of the third embodiment will be described in detail.

[0144] like Fig.12 As shown, the pressing pump 300 is provided with two elastic reset mechanisms 350 arranged in an overlapping manner, wherein the upper spring coil of the upper elastic reset mechanism 350 is supported on the pressure head, and the lower spring coil of the lower elastic reset mechanism 350 is supported on the toothed cap. The lower spring coil of the upper elastic reset mechanism 350 and the upper spring coil of the lower elastic reset mechanism 350 are in contact with each other.

[0145] Exemplarily, the lower coil of the spring of the elastic reset mechanism 350 located at the top and the upper coil of the spring of the elastic reset mechanism 350 located at the bottom can be formed as one piece, or can be fixed together by melting or the like, or can simply be abutted against each other, all of which are within the scope of the present application.

[0146] <Fourth Embodiment>

[0147] Figures 13 to 20 The pressing pump 400 of the fourth embodiment of the present application is shown. Unless otherwise described or conflicting, the specific structures described above with respect to the first to third embodiments are also applicable to the fourth embodiment. In the following description, the same structures will not be described in detail, and the structures of the fourth embodiment that are different from the first to third embodiments will be described in detail.

[0148] The pressing pump 400 of the fourth embodiment includes a pressing head 410, a toothed sleeve 420 and a cylinder 430. The toothed sleeve 420 is connected to the cylinder 430. A piston rod 440 is connected below the pressing head 410, and the piston rod 440 extends into the cylinder 430. The pressing pump 400 also includes an elastic reset mechanism 450. Fig.13 In the structure of the pressing pump 400 of the fourth embodiment shown in , the elastic return mechanism 450 is disposed in the cylinder 430 .

[0149] Fig.15a and 15bThe front view and the stereogram of the elastic reset mechanism 450 are shown. The elastic reset mechanism 450 includes an upper spring coil 451 and a lower spring coil 452, and an elastic member 453 is connected between the upper spring coil 451 and the lower spring coil 452. The elastic member 453 includes a plurality of elastic units 454, and these elastic units 454 can be, for example, roughly elliptical. These elastic members 453 are connected together by a connecting portion 455, and the elastic unit 454 located at the top and the elastic unit 454 located at the bottom are respectively connected to the upper spring coil 451 and the lower spring coil 452 through the connecting portion 455.

[0150] Back to Fig.13 , wherein the cylinder 430 is partially cut away to expose the internal structure of the cylinder 430. It can be seen that a snap-fitting portion 431 is formed at the upper end of the cylinder 430, and the upper end of the elastic reset mechanism 450, specifically its spring upper coil 451, is snap-fitted on the snap-fitting portion 431. A spring fixing member 460 is fixedly connected to the piston rod 440, and the lower end of the elastic reset mechanism 450, specifically its spring lower coil 452, is fixedly connected to the spring fixing member 460.

[0151] exist Fig.14 As can be seen from the exploded three-dimensional diagram shown, a protrusion 461 is formed on the spring fixing member 460, and the lower end of the elastic reset mechanism 450, specifically its spring lower coil 452, is sleeved under the protrusion 461. In this way, when the pressure head 110 is pressed, the spring fixing member 460 moves downward together with the piston rod 440, and the protrusion 461 pushes the spring lower coil 452 of the elastic reset mechanism 450 downward.

[0152] Preferably, a limit portion 462 is formed at the lower end of the spring fixing member 460, and an exemplary structure thereof is in the form of a tab extending gradually from top to bottom. The limit portion 462 helps prevent the lower end of the elastic reset mechanism 450 from coming off the spring fixing member 460.

[0153] The following will be combined Fig.13 The action of the pressing pump 400 of the fourth embodiment is explained below. When the pressing head 410 is pressed downward, the upper end of the elastic reset mechanism 450 supported on the clamping portion 431 of the cylinder 430 is fixed, while the lower end of the elastic reset mechanism 450 moves downward together with the pressing head 410 and the piston rod 440, so that the elastic reset mechanism 450 is stretched and the elastic force is accumulated in the elastic reset mechanism 450. After the pressing force applied to the pressing head 410 is removed, the spring fixing member 460 is pushed upward under the action of the elastic force of the elastic reset mechanism 450, and then the piston rod 440 and the pressing head 410 are also pushed upward, so that the pressing head 410 returns to its upper standby position.

[0154] like Fig.16aAs shown, when the pressure head 410 is in the upper standby position, the elastic reset mechanism 450 is in a relaxed state with a shorter length. When the pressure head 410 is pressed downward to form a lower dead point, the elastic reset mechanism 450 is stretched, wherein the distance between the upper and lower sides of the elastic unit 454 is enlarged, and an elastic contraction force is accumulated therein. After the pressing force is removed, the elastic contraction force can return the pressure head 410 and the piston rod 440 to their upper standby positions.

[0155] Apart from Figures 15a to 16b In addition to the structure shown in FIG. 4 , the elastic unit 454 in the elastic reset mechanism 450 may also adopt other structures and shapes. Fig.17 In the embodiment, a weak portion 456 is formed at the connection portion at both ends of the upper and lower sides of the elastic unit 454, and the weak portion 456 makes the elastic unit 454 more easily deformable. Fig.18 In the embodiment, the elastic unit 454 is formed into an elliptical shape. Fig.19 In the embodiment, the upper side of the elastic unit 454 is arc-shaped, and the lower side is a thinner straight line. Fig. 20 In the embodiment, the elastic unit 454 is formed in a substantially rectangular shape.

[0156] <Fifth Embodiment>

[0157] Fig.21 and 22 The pressing pump 500 of the fifth embodiment of the present application is shown. Unless otherwise described or conflicting, the specific structures described above with respect to the first to fourth embodiments are also applicable to the fifth embodiment. In the following description, the same structures will not be described in detail, and the structures of the fifth embodiment that are different from the first to fourth embodiments will be described in detail.

[0158] like Fig.21 As shown, the pressing pump 500 of the fifth embodiment includes a pressing head 510, a toothed cap 520 and a cylinder 530. The elastic reset mechanism 550 of the pressing pump 500 is sleeved on the outer side of the cylinder 530. Fig.21 and 22 It can be seen that a convex strip 531 is formed on the outer surface of the cylinder 530 , and the spring upper coil 551 of the elastic reset mechanism 550 is fixedly supported on the convex strip 531 .

[0159] The elastic reset mechanism 550 also includes a spring fixing member 560. Similar to the fourth embodiment, the spring fixing member 560 is fixedly connected to the piston rod (not shown in the figure) and can move up and down along with the up and down movement of the pressure head 510 and the piston rod fixedly connected thereto. A protrusion 561 is also formed on the outer periphery of the spring fixing member 560, and a limiting portion 562 is preferably also provided at the lower portion of the spring fixing member 560.

[0160] A narrow groove 532 extending in the longitudinal direction is also formed on the peripheral wall of the cylinder 530. The number and size of the narrow grooves 532 match the protrusions 561 on the spring fixing member 560 to allow the protrusions 561 to fit into the narrow grooves 532 and extend from the inside to the outside of the cylinder 530 so as to be able to cooperate with the spring lower coil 552 of the elastic reset mechanism 550 mounted on the outside of the cylinder 530.

[0161] When the pressure head 510 is pressed downward, the spring fixing member 560 also moves downward together, thereby the elastic reset mechanism 550 is stretched. After the pressing force applied to the pressure head 510 is removed, the elastic force of the spring fixing member 560 causes the pressure head 510 to return upward to its upper standby position.

[0162] <Sixth Embodiment>

[0163] Fig.23 The pressing pump 600 of the sixth embodiment of the present application is shown. Unless otherwise described or conflicting, the specific structures described above with respect to the first to fifth embodiments are also applicable to the sixth embodiment. In the following description, the same structures will not be described in detail, and the structures different from the first to fifth embodiments of the sixth embodiment will be described in detail.

[0164] exist Fig.23 The pressing pump 600 of the sixth embodiment shown in FIG. 1 is specifically a capsule pump, which includes a pressure head 610 and a mouthpiece 620 , and a space is formed between the pressure head 610 and the mouthpiece 620 , and a capsule 630 is accommodated in the space. Further, an elastic reset mechanism 650 is accommodated in the capsule 630 .

[0165] The elastic reset mechanism 650 may be a structure of the elastic reset mechanism described in any one of the first to fifth embodiments, for example, Figures 11a to 11c The structure of the elastic return mechanism 250 of the second embodiment is the same.

[0166] <Other Implementation Methods>

[0167] The various embodiments of the present application are described in detail above. Those skilled in the art will appreciate that these embodiments do not constitute a limitation on the scope of the present application. Instead, various modifications, variations, combinations, etc. that are obvious to those skilled in the art may be made on the basis of the disclosed structure, which are also within the scope of the present application.

[0168] In addition, in the embodiments described in detail, the lotion pump is mainly used as an example for explanation. The elastic reset mechanism of the present application can also be used in other types of pressing pumps, such as Fig.24 The foam pump 700 shown in Fig.25 The vacuum pump 800 etc. are shown.

[0169] In the foam pump 700 and the vacuum pump 800, an elastic reset mechanism as described in any one of the first to fifth embodiments may be provided. For example, in the exemplary structure shown in the figure, the foam pump 700 and the vacuum pump 800 may be provided with an elastic reset mechanism as described in any one of the first to fifth embodiments. Figures 11a to 11c The elastic return mechanism 250 is shown.

Claims

1. An elastic reset mechanism, which is installed in a compression pump and supported between a movable part and a fixed part of the compression pump, wherein: The elastic reset mechanism comprises an elastic unit, characterized in that the elastic unit is arranged and installed so that when the movable part is pressed downward relative to the fixed part, the distance between the upper and lower parts of the elastic unit increases, so that the elastic unit is stretched.

2. The elastic reset mechanism according to claim 1, characterized in that: The elastic reset mechanism comprises an upper spring coil and a lower spring coil, and the elastic unit is connected between the upper spring coil and the lower spring coil.

3. The elastic reset mechanism according to claim 1 or 2, characterized in that: The elastic reset mechanism includes two or more elastic units.

4. A compression pump, comprising a movable part and a fixed part, wherein the movable part comprises a pressure head and a piston rod connected below the pressure head, and the fixed part comprises a tooth sleeve and a cylinder fixedly connected together, wherein: The piston rod extends into the interior of the cylinder, and is characterized in that the pressing pump is provided with an elastic return mechanism as claimed in any one of claims 1 to 3.

5. The pressing pump according to claim 4, characterized in that: The upper end of the elastic reset mechanism is supported below the pressure head, and the lower end of the elastic reset mechanism is supported on the top surface of the brace.

6. The pressing pump according to claim 4 or 5, characterized in that: The elastic reset mechanism comprises an upper spring coil and a lower spring coil, and the elastic unit is connected between the upper spring coil and the lower spring coil.

7. The pressing pump according to claim 6, characterized in that: A notch is formed on at least one of the upper spring coil and the lower spring coil.

8. The pressing pump according to claim 6, wherein: The elastic reset mechanism also includes: an upper lever portion, through which the end of the lower half of the elastic unit is connected to the spring upper coil; and A lower lever portion, through which the end of the upper half of the elastic element is connected to the lower coil of the spring.

9. The pressing pump according to claim 8, characterized in that: The upper lever part and the lower lever part include at least one of the following structures: A width of at least one of the upper lever portion and the lower lever portion is set to be smaller than a width of the elastic unit; At least one of the upper lever portion and the lower lever portion includes a bent portion; An opening is provided on one of the upper lever portion and the lower lever portion, and the other of the upper lever portion and the lower lever portion extends through the opening; as well as A hinge portion is formed at at least one of a position between the upper lever portion and the upper coil of the spring and a position between the lower lever portion and the lower coil of the spring.

10. The pressing pump according to claim 4, characterized in that: The pressing pump includes two or more resetting elastic reset mechanisms.

11. The pressing pump according to claim 4, wherein: A snap-fitting portion is formed on the inner surface of the cylinder or the outer surface of the cylinder, and the upper end of the elastic reset mechanism is fixedly fitted on the snap-fitting portion; The lower end of the elastic reset mechanism is fixedly fitted on the piston rod.

12. The pressing pump according to claim 11, characterized in that: The pressing pump further comprises a spring fixing member, wherein the spring fixing member is fixedly connected to the piston rod, a convex block is formed on the outer surface of the spring fixing member, and the lower end of the elastic reset mechanism is clamped on the convex block.

13. The pressing pump according to claim 12, wherein: A limiting portion is also provided at the bottom of the spring fixing component, and the limiting portion prevents the lower end of the elastic reset mechanism from escaping from the lower end of the spring fixing component.

14. The compression pump according to claim 11, wherein: The elastic component of the elastic reset mechanism includes a plurality of elastic units and a connecting portion connected between the elastic units.

15. The compression pump according to claim 14, wherein: The elastic unit includes at least one of the following structures: A weak portion is formed between the upper side and the lower side of the elastic unit; The upper side of the elastic unit is arc-shaped, and the lower side of the elastic unit is straight-line; The elastic unit is at least one of an elliptical shape and a rectangular shape.

16. The pressing pump according to any one of claims 11 to 15, characterized in that: The engaging portion is formed on the inner surface of the cylinder so that the elastic return mechanism is disposed inside the cylinder.

17. The compression pump according to claim 12, wherein: The snap-fitting portion is formed on the outer surface of the cylinder, the elastic reset mechanism is sleeved on the outside of the cylinder, and a longitudinally extending narrow groove is formed on the peripheral wall of the cylinder. The protrusion fits into the narrow groove and extends from the inside of the cylinder to the outside.

18. The compression pump according to claim 4, wherein: The pressing pump is a capsule pump, a space is formed between the pressure head and the mouthpiece, a capsule body is installed in the space, and the elastic reset mechanism is arranged in the capsule body.

19. The compression pump according to claim 4, wherein: The pressing pump is one of a lotion pump, a foam pump and a vacuum pump.

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