Lotion Pump

Abstract

A lotion pump includes a movable part and a fixed part. A switching mechanism is formed on the movable part and the fixed part. With the rotation or up and down movement of the movable part, the switching mechanism can switch the elastic reset mechanism of the lotion pump between a standby state and a non-standby state. The structure of the lotion pump can prevent the spring from yielding and deforming due to long-term compression, and at the same time can realize the form of a lower lock head.

Description

Technical Field

[0001] The present invention relates to an emulsion pump, and particularly to a fully plastic emulsion pump. Background Art

[0002] Emulsion pumps are widely used in daily chemical products such as hand sanitizers and body washes to pump products out of containers such as bottles for use. Most of the emulsion pumps sold on the market at present are equipped with metal springs. After the user presses the emulsion pump to pump a certain amount of product out of the container for use, the metal spring can reset the emulsion pump for the next use.

[0003] In recent years, with the improvement of environmental protection requirements, it is required to recycle emulsion pumps to achieve the recyclability of resources. In order to facilitate the recycling and reuse of emulsion pumps, in the field of emulsion pump manufacturing, it has been proposed to use plastic springs instead of metal springs, that is, fully plastic emulsion pumps. The common forms of plastic springs include plastic threaded springs, plastic bow springs, bellows springs, and so on. However, plastic springs have some problems. For example, when a plastic spring is compressed for a long time, it will undergo yield deformation, causing the elastic force of the plastic spring to decay until it can no longer function as a spring. To avoid the failure of the plastic spring due to long-term compression, a solution is to set the fully plastic emulsion pump in the form of an upper lock head, and when the emulsion pump is in a non-use state, the plastic spring is in a freely relaxed state without being oppressed.

[0004] Figure 29 An exemplary emulsion pump with a plastic spring is shown. Among them, the emulsion pump 1 has a pressing head 10, a dental sleeve 20, a cylinder 30, and a piston rod 40. One end of the spring 50 is connected to the piston 40, and the other end is connected to the cylinder 30. When the pressing head 10 is pressed, the piston rod 40 moves downward accordingly, thereby compressing the spring 50. When the pressure applied to the pressing head 10 is removed, under the elastic force of the spring 50, the pressing head 10 resets. In Figure 29 The emulsion pump 1 shown is an emulsion pump in the form of an upper lock head. When in a non-use state, for example, during the transportation and display sales of products, the pressing head 10 is at the highest point of its stroke, so that the spring 50 is in a state with a relatively small compression force. In this way, the spring 50 can be prevented from undergoing yield deformation and failure due to compression in the non-use state.

[0005] It can be seen that the above emulsion pump is an upper lock head type emulsion pump. For an upper lock head emulsion pump, it is sometimes difficult to meet the packaging requirements for e-commerce transportation, and the height of the upper lock head emulsion pump in the initial non-use state is relatively high, thus having relatively high requirements for the height of cartons, shelves, etc.

[0006] Therefore, in the field of emulsion pumps, there is still a need for an emulsion pump with a plastic spring whose structure needs to be further improved, which can solve the problem of elastic attenuation of the plastic spring and at the same time meet the requirements of e-commerce transportation. Summary of the Invention

[0007] The present invention is made to solve the problems of the existing emulsion pumps described above. The object of the present invention is to provide an emulsion pump with an improved structure, which can ensure that the plastic spring of the emulsion pump will not be compressed and yield deformed in the non-use state, thus having a longer service life, and at the same time can achieve a lower position lock head to meet the requirements of e-commerce transportation.

[0008] The emulsion pump of the present invention is for mounting on a container to dispense the product in the container. The emulsion pump includes a movable part and a fixed part. In use, the movable part can move relative to the container, and the fixed part remains stationary relative to the container. Wherein, the emulsion pump further includes:

[0009] An elastic reset mechanism, one end of the elastic reset mechanism is in contact with or connected to the movable part, and the other end of the elastic reset mechanism is fixed to the fixed part; and

[0010] A switching mechanism, the switching mechanism is arranged on the movable part or the fixed part, and the switching mechanism is arranged to cooperate with the elastic reset mechanism so that when the movable part rotates in the first direction and / or moves upward, one end of the elastic reset mechanism moves relative to the movable part to the first position, so that the elastic reset mechanism is loaded and enters the standby state, and when the movable part rotates in the second direction opposite to the first direction and / or moves downward, one end of the elastic reset mechanism moves relative to the movable part to the second position, so that the elastic reset mechanism enters the non-standby state.

[0011] In the emulsion pump with the above structure, by setting the switching mechanism, the movement of a moving part such as a pressing head can make the supporting seat switch between the first position and the second position to select to apply a compressive force to the elastic reset mechanism, or reduce the compressive force on the elastic reset mechanism, or even disengage from the elastic reset mechanism. In this way, in the non-use state, the elastic reset mechanism can be subjected to very little or no compressive force. This structure is particularly beneficial for plastic springs and can extend their service life. And it can be seen that the emulsion pump with this structure can achieve the form of a lower position lock head, so as to meet the requirements of packaging, especially for e-commerce transportation.

[0012] In a specific form, the switching mechanism is arranged on the movable part. Further, the switching mechanism includes a first cooperating part, and a second cooperating part is formed on the elastic reset mechanism. When the movable part moves relative to the container, the first cooperating part cooperates with the second cooperating part to make one end of the elastic reset mechanism move between the first position and the second position.

[0013] Preferably, the elastic reset mechanism includes a spring and a spring support seat. The spring support seat is located at one end of the spring, and the second engaging portion is formed on the spring support seat.

[0014] More preferably, one of the first engaging portion and the second engaging portion is a spiral rib, and the other of the first engaging portion and the second engaging portion is a spiral groove. The spiral rib can be fitted into the spiral groove, so that when the movable part rotates, the interaction between the spiral groove and the spiral rib causes one end of the elastic reset mechanism to move between the first position and the second position.

[0015] For the above specific structure, during the process of rotating the pressing head to change it from the locked state to the standby state, the interaction between the spiral groove and the spiral rib can simultaneously cause the support seat to enter the second position, thereby loading the spring.

[0016] Further, as the movable part rotates, the spiral rib can be disengaged from the spiral groove, and the dimensions and relative positions of the spiral rib and the spiral groove are set such that as the movable part rotates, the spiral rib is disengaged from the spiral groove before the locking block is aligned with the notch. In this way, in the second position, the lower end of the rib can abut against the support seat to keep it in the second position, and it can prevent the spiral groove from re-entering the spiral rib unexpectedly when pressing the pressing head of the lotion pump.

[0017] Specifically, the movable part may include a pressing head, a piston rod and a piston. The piston rod is connected to the lower part of the pressing head, and a piston is provided on the piston rod. The fixed part includes a dental sleeve and a cylinder. The cylinder is connected to the dental sleeve, and at least the part of the piston rod where the piston is provided extends into the cylinder.

[0018] Of course, the movable part and the fixed part can also be arranged differently from the above manner. For example, the cylinder is the movable part, while the piston rod and the piston are the fixed parts.

[0019] Preferably, a locking block is formed on one of the outer peripheral surface of the piston rod and the top of the dental sleeve, and a notch is formed on the other of the outer peripheral surface of the piston rod and the top of the dental sleeve. By rotating the piston rod, the locking block can be aligned with the notch, so that the pressing head and the piston rod can move upward.

[0020] By providing the upper / lower locking blocks and the support seat stop blocks, the rotation direction of the pressing head and the piston rod can be restricted to prevent misoperation.

[0021] Preferably, as the piston rod rotates, the spiral rib can be disengaged from the spiral groove, and the dimensions and relative positions of the spiral rib and the spiral groove are set such that as the piston rod rotates, the spiral rib is disengaged from the spiral groove before the locking block is aligned with the notch.

[0022] Further preferably, the first matching portion includes a guide bar, and the second matching portion includes a notch, and the guide bar is aligned with the notch by rotating the piston rod, thereby allowing one end of the elastic reset mechanism to move between the first position and the second position.

[0023] In addition, an upper locking block is provided above the guide bar and / or a lower locking block is provided below the guide bar; and

[0024] A stopper is formed above and / or below the second matching portion, and the stopper cooperates with the upper locking block and / or the lower locking block so that the movable part can only be rotated in a preset direction.

[0025] In another specific structure, the switching mechanism includes a first matching portion, and a second matching portion is formed on the elastic reset mechanism, wherein the first matching portion is a reverse buckle formed on the movable part, and by pulling up the movable part, the second matching portion can move from the first position to the second position over the reverse buckle, and is held in the second position by the reverse buckle.

[0026] In a preferred structure, the fixing part includes a toothed sleeve and a cylinder, wherein the cylinder is connected to the toothed sleeve, and at least the part of the piston rod provided with the piston extends into the cylinder, wherein a guide block is included on one side of one end of the elastic reset mechanism and the outer wall of the cylinder, and a notch is formed on the other side of one end of the elastic reset mechanism and the outer wall of the cylinder, and the guide block is at least partially accommodated in the notch.

[0027] The mutual cooperation between the notch and the guide block can ensure that the movement of the support seat is a longitudinal linear motion.

[0028] In another preferred structure, the movable part includes a pressure head, a piston rod and a piston, wherein the piston rod is connected to the lower part of the pressure head, and a piston is arranged on the piston rod, wherein the first matching part is formed on the outer peripheral surface of the piston rod and / or the piston.

[0029] In a specific embodiment, the movable part includes a pressure head, a piston rod, a piston and a sleeve, wherein the piston rod is connected to the lower part of the pressure head, and a piston is arranged on the piston rod, wherein the sleeve is sleeved on the outer side of the piston rod and / or the piston, and a first matching portion is formed on the outer surface of the sleeve.

[0030] Preferably, the elastic reset mechanism comprises at least one elastic strip.

[0031] Further preferably, the elastic reset mechanism further comprises: an annular spring upper seat, the upper end of the elastic strip is connected to the spring upper seat, and / or an annular spring lower seat, the lower end of the elastic strip is connected to the spring lower seat.

[0032] Wherein, the elastic strip is connected to the spring upper seat and / or the spring lower seat via a pivoting portion, wherein when the elastic reset device is compressed, the pivoting portion pivots and folds.

[0033] Preferably, a first guide groove is formed on the inner side of the spring upper seat and one of the fixed parts, a first guide strip is formed on the inner side of the spring upper seat and the other of the fixed parts, and the first guide groove and the first guide strip match each other; and / or a second guide groove is formed on the inner side of the spring lower seat and one of the fixed parts, a second guide strip is formed on the inner side of the spring lower seat and the other of the fixed parts, and the second guide groove and the second guide strip match each other.

[0034] Through the cooperation between the guide groove and the guide strip, the movement of the elastic reset device can be guided to prevent the spring from deflecting when the lotion pump is pressed down.

[0035] In a preferred structure, an undercut portion is provided at the lower portion of the fixed portion, and the undercut portion fixes the spring lower seat of the spring.

[0036] Further, when viewed along the axial direction of the lotion pump, the elastic strip extends around at least a portion of the outer circumference of the cylinder. Brief Description of the Figures

[0037] In the attached figure:

[0038] Figure 1 This is a side view of the lotion pump according to the first embodiment of the present invention.

[0039] Figure 2 Yes Figure 1 The partial cutaway view of the lotion pump shows the internal structure of the lotion pump.

[0040] Figure 3 Yes Figure 1 A partial three-dimensional view of the lotion pump, including the piston rod, spring and support seat of the lotion pump.

[0041] Figure 4 Shows Figure 1 A cross-sectional view of a lotion pump shown, wherein the lotion pump is in a locked state.

[0042] Figure 5 Shows Figure 1 Another cross-sectional view of the lotion pump shown, wherein the lotion pump is in a standby state.

[0043] Figures 6a - 6d Shows Figure 1 The support seat of the lotion pump shown, wherein Figure 6a is a cross-sectional view of the support seat, Figure 6b is another cross-sectional view of the support seat, Figure 6c is a top view of the support seat, and Figure 6dIt is a perspective view of the support seat.

[0044] Figure 7a and 7b shows Figure 1 the piston rod of the emulsion pump shown, wherein Figure 7a is a side view of the piston rod 150, Figure 7b is a front view of the piston rod.

[0045] Figures 8a - 8c shows a perspective view of the interaction between the support seat and the piston rod, wherein in Figure 8a the support seat is in the first position relative to the piston rod, and in Figure 8b the support seat moves towards the second position relative to the piston rod, and in Figure 8c the support seat reaches the second position.

[0046] Figures 9a - 9f shows Figure 1 the spring of the emulsion pump shown, wherein Figure 9a is a front view of the spring, Figure 9b is a perspective view of the spring, Figure 9c is a top view of the spring, Figure 9d is a bottom view of the spring, Figure 9e shows a schematic diagram of the state of the spring around the cylinder, and Figure 9f then shows a cross-sectional view taken along the line A - A in Figure 9e the cross-section.

[0047] Figure 10 is Figure 1 a front view of the cylinder of the emulsion pump shown.

[0048] Figure 11a and 11b shows Figure 1 the retainer of the emulsion pump shown, wherein Figure 11a is a front view of the retainer, Figure 11b is a top view of the retainer.

[0049] Figure 12a and 12b shows a cross-sectional view of the emulsion pump according to the second embodiment of the present invention, wherein Figure 12a shows the locked state of the emulsion pump, Figure 12b shows the standby state of the emulsion pump.

[0050] Figures 13a - 13d shows Figure 12a and 12b the support seat of the emulsion pump shown, wherein, Figure 13a is a top view of the support seat, Figure 13b is a cross-sectional view of the support seat, Figure 13c is another cross-sectional view of the support seat, and Figure 13dIt is a perspective view of the support seat.

[0051] Figure 14a and 14b show Figure 12a and 12b the piston rod of the emulsion pump shown, where Figure 14a is the front view of the piston rod, Figure 14b is the perspective view of the piston rod.

[0052] Figure 15a and 15b show the perspective view of the interaction between the support seat and the piston rod, where in Figure 15a the support seat is in the first position relative to the piston rod, and in Figure 15b the support seat is in the second position.

[0053] Figure 16a and 16b show the cross-sectional view of the emulsion pump of the third embodiment of the present invention, where Figure 16a shows the locked state of the emulsion pump, Figure 16b shows the standby state of the emulsion pump.

[0054] Figure 17 is Figure 16b the partial enlarged view of part A in

[0055] Figure 18a shows the cross-sectional view of the emulsion pump of the fourth embodiment of the present invention.

[0056] Figure 18b shows Figure 18a the perspective view of the emulsion pump shown.

[0057] Figure 19a and 19b show the cross-sectional view of the emulsion pump of the fifth embodiment of the present invention, where Figure 19a shows the locked state of the emulsion pump, Figure 19b shows the standby state of the emulsion pump.

[0058] Figure 20 shows Figure 19a and 19b the side view of the pressing head of the emulsion pump in

[0059] Figure 21 shows Figure 19a and 19b the cross-sectional view of the piston rod of the emulsion pump.

[0060] Figure 22 shows Figure 19a and 19b the cross-sectional view of the piston of the emulsion pump.

[0061] Figure 23 shows Figure 21 the piston rod in Figure 22 and the piston in

[0062] Figure 24 A cross-sectional view of the piston rod in an emulsion pump with a deformed structure is shown.

[0063] Figure 25a A top view of the sleeve in the emulsion pump with the deformed structure is shown.

[0064] Figure 25b shows Figure 25a a cross-sectional view of the sleeve in

[0065] Figure 26 A cross-sectional view of the piston in the emulsion pump with the deformed structure is shown.

[0066] Figure 27 shows Figures 24 - 26 a cross-sectional view of the piston rod, sleeve and piston assembled together in

[0067] Figure 28a and 28b shows a cross-sectional view of an emulsion pump according to the sixth embodiment of the present invention, wherein Figure 28a shows the locked state of the emulsion pump, Figure 28b shows the standby state of the emulsion pump.

[0068] Figure 29 A cross-sectional view of an emulsion pump of the prior art is shown. Detailed Description of the Embodiments

[0069] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that only the preferred embodiments of the present invention are shown in the drawings, which do not limit the scope of the present invention. Those skilled in the art can make various obvious modifications, variations, equivalent substitutions on the basis of the embodiments shown in the drawings, and, unless there is a contrary description or obvious contradiction, the features in the following different specific embodiments can be arbitrarily combined. All of these fall within the protection scope of the present invention.

[0070] <First Embodiment>

[0071] Figures 1 - 11b An emulsion pump 100 according to the first embodiment of the present invention is shown, and a relaxation mechanism is provided in the emulsion pump 100. Among them, Figure 1 a side view of the emulsion pump 100 is shown, Figure 2 a partially cut-away perspective view of the emulsion pump 100 is shown, from which the internal structure of the emulsion pump 100 can be seen.

[0072] The emulsion pump 100 includes a head 110, a retainer 120, and a cylinder 130. The cylinder 130 is connected to the retainer 120, and an elastic reset mechanism such as a spring 140 is disposed outside the cylinder 130 around the outer periphery of the cylinder 130. Further, as Figure 2 shown, the emulsion pump 100 further includes a piston rod 150. One end of the piston rod 150 is connected to the head 110, and a piston is connected to the other end and extends into the interior of the cylinder 130. Moreover, in the emulsion pump 100 of the present invention, a support seat 160 is further included. The support seat 160 is disposed around the piston rod 150 within the cylinder 130, so that the upper end of the spring 140 is supported by the support seat 160, and the lower end is supported by the cylinder 130, specifically, supported on the lower part of the cylinder 130.

[0073] It can be seen that in the emulsion pump 100 of the first embodiment, the head 110 can drive the piston rod 150 and the piston on the piston rod 150 to move relative to the cylinder 130, the retainer 120, etc., while when the components such as the cylinder 130 and the retainer 120 are installed on the container, they always remain fixed or stationary relative to the container. Therefore, in this emulsion pump 100, the head 110, the piston rod 150, and the piston on the piston rod 150 can be considered to constitute at least a part of the movable part of the emulsion pump 100. Correspondingly, the cylinder 130 and the retainer 120 constitute at least a part of the fixed part of the emulsion pump 100.

[0074] Figure 3 shows the connection relationship between the relevant components that play a relaxation role in the emulsion pump 100 of the present invention. Figure 4 and 5 respectively show cross-sectional views of the emulsion pump 100 in the unused state and the open state.

[0075] Next, the specific structures of the components of the emulsion pump 100 of the first embodiment will be described separately, and on this basis, in combination with Figures 3 - 5 to describe the interconnection and interaction relationships between the components, so as to clearly describe the structure and operation principle of the emulsion pump 100 of the first embodiment.

[0076] Support seat and piston rod :

[0077] In the present invention, the function of the relaxation mechanism is realized through the interaction between the piston rod 150 and the support seat 160. Specifically, it is described as follows.

[0078] Figures 6a - 6d shows various views of the support seat 160 of the emulsion pump 100 of the first embodiment, where Figure 6a and 6b are cross-sectional views of the support seat 160 obtained by cutting from different directions, Figure 6c is the top view of the support seat 160, andFigure 6d It is a perspective view of the support seat 160.

[0079] As can be seen from the figure, the support seat 160 is generally ring-shaped and is arranged outside the piston rod 150 around the piston rod 150, or sleeved outside the piston rod 150 (see Figure 2 ). At least one, preferably a pair of oppositely arranged guide blocks 161 are provided on the outside of the support seat 160, and the guide blocks 161 cooperate with the notches 131 in the cylinder 130 to restrict the movement of the support seat 160, which will be described in more detail below.

[0080] At least one spiral groove 162 is provided on the inner side of the ring-shaped body of the support seat 160. In Figures 6a - 6d the illustrated preferred embodiment, the support seat 160 includes two oppositely arranged spiral grooves 162. Correspondingly, as shown in Figure 7a and 7b , at least one spiral rib 151 that can match the spiral groove 162 is provided on the outer peripheral surface of the piston rod 150, such as Figure 7a and 7b a pair of spiral ribs 151 shown in. Preferably, an annular flange 153 is further provided above the spiral rib 151. When the support seat 160 is at the highest point of its stroke, the annular flange 153 acts as a stop for the support seat 160 to prevent the support seat 160 from moving upward further and causing the spiral groove 162 to disengage from the spiral rib 151.

[0081] A lock block 152 is also provided on the piston rod 150, which cooperates with a notch 121 formed on the dental brace 120, specifically on the top of the dental brace 120, to allow the indenter 110 to switch between the locked state and the standby state, as described in more detail below.

[0082] Figures 8a - 8c A schematic perspective view of the cooperation between the piston rod 150 and the support seat 160 is shown in. Specifically, when the indenter 110 is rotated and the connected piston rod 150 is rotated accordingly, under the interaction between the spiral groove 162 and the spiral rib 151, the support seat 160 can move downward relative to the piston rod 150, as shown in Figure 8b . And by further rotating the piston rod 150, the spiral rib 151 of the piston rod 150 can be disengaged from the spiral groove 162 of the support seat 160, and the lower end surface of the spiral rib 151 abuts against the upper surface of the support seat 160, as shown in Figure 8c the state shown. In this way, the spring 140 can be changed from the non-standby state to the compressed standby state.

[0083] Spring :

[0084] Figures 9a - 9d Shows various views of the spring 140, wherein, Figure 9a Shows a front view of the spring 140, Figure 9b Shows a perspective view of the spring 140, Figure 9c Shows a top view of the spring 140, while 9d shows a bottom view of the spring 140.

[0085] As Figures 9a - 9c Shown, the spring 140 has an annular upper spring seat 141 and an annular lower spring seat 142, and both ends of at least one elastic strip 143 are respectively connected to the upper spring seat 141 and the lower spring seat 142. The spring 140 shown in the figure includes two elastic strips 143, but those skilled in the art know that any appropriate number of elastic strips 143 can be set as needed, such as one elastic strip 143 or three or more elastic strips 143.

[0086] At the end where the elastic strip 143 is connected to the upper spring seat 141 and / or the lower spring seat 142, a pivot portion 146 is preferably provided. The pivot portion 146 is sheet-shaped, and when the spring 140 is compressed, the sheet-shaped pivot portion 146 can pivot and fold onto the upper spring seat 141 / lower spring seat 142.

[0087] Preferably, as Figure 9c Shown, at least one guide groove 144 is formed inside the upper spring seat 141 of the spring 140, which cooperates with a spring guide strip 132 (see Figure 10 ) formed on the outer peripheral surface of the cylinder 130 to guide the movement of the spring 140, as will be described in detail below.

[0088] As Figure 9d Shown, a guide groove 145 can also be formed inside the lower spring seat 142 of the spring 140, which is easy to cooperate with the corresponding spring guide strip 132 on the cylinder 130.

[0089] Additionally preferably, the shape of the elastic strip 143 is set such that the projection of the elastic strip in the axial direction of the lotion pump 100 is substantially arc-shaped. In other words, when looking along the axial direction of the lotion pump 100, the elastic strip 143 extends around at least a part of the outer periphery of the cylinder, as shown in Figure 9e and 9f . In this way, the structure of the lotion pump 100, especially the structure of the part below the dental appliance 120 including the spring 140, can be made more compact.

[0090] Of course, Figures 9a - 9fThe preferred structure of the spring 140 is shown. The structure may be modified or some structural parts thereof may be omitted. For example, the guide grooves 144 and 145 respectively provided in the spring upper seat 141 and the spring lower seat 142 may be omitted. Furthermore, the spring 140 may also not include the spring upper seat 141 and the spring lower seat 142, and each elastic strip 143 may be respectively fixed on the support seat 160 and the lower part of the cylinder 130.

[0091] Cylinder :

[0092] Figure 10 shows a front view of the cylinder 130. As Figure 10 As shown in FIG. 1 , a notch 131 is formed on the outer wall of the cylinder 130, and the guide block 161 of the support seat 160 is slidably accommodated in the notch 131, so that the support seat 160 can only move longitudinally relative to the cylinder 130, but cannot rotate.

[0093] Preferably, a spring guide strip 132 is also provided on the outer circumference of the cylinder 130, which cooperates with the guide groove 144 in the spring upper seat 141 of the spring 140 and / or the guide groove 145 in the spring lower seat 142 to guide the spring 140.

[0094] The arrangement of the guide groove and the guide strip can also be interchanged, that is, the guide strip is formed on the spring upper seat 141 / the spring lower seat 142, and the guide groove is formed on the cylinder 130.

[0095] In addition, preferably, an undercut portion 133 is formed at the bottom of the outer wall of the cylinder 130, which cooperates with the spring lower seat 142 of the spring 140 to fix the spring lower seat 142 and prevent the spring lower seat 142 from moving upward relative to the cylinder 130.

[0096] Dental brace :

[0097] Figure 11a and 11b The front view and top view of the mouthpiece 120 are shown respectively. As shown in the figure, a notch 121 is formed on the mouthpiece 120, especially on the top of the mouthpiece 120. When the piston rod 150 is rotated to align the locking block 152 with the notch 121, the locking block 152 can pass through the notch 121, so that the piston rod 150 and the pressure head 110 connected thereto are bounced upward, so that the lotion pump 100 enters the standby state.

[0098] Operation of emulsion pump :

[0099] The following will refer to Figure 4 and 5 The operating principle of the lotion pump 100 of the first embodiment is described.

[0100] ​​As shown Figure 4 in the figure, the lotion pump 100 is in a locked state, which can be used in occasions such as transportation and sales of the lotion pump 100. At this time, the support seat 160 in the lotion pump 100 is at the highest point of its stroke, and the spiral groove 162 of the support seat 160 cooperates with the spiral rib 151 in the piston rod 150. When the user needs to operate the lotion pump 100 to use the product after purchasing the product, the user rotates the pressing head 110 in the opening direction, driving the piston rod 150 connected to the pressing head 110 to rotate together.

[0101] During the rotation of the piston rod 150, the spiral rib 151 on the outer surface of the piston rod 150 interacts with the spiral groove 162 on the support seat 160, causing the support seat 160 to move downward relative to the piston rod 150, that is, move in the direction towards the spring 140 until the spiral rib 151 disengages from the spiral groove 162. During this process, the support seat 160 exerts a compressive force on the spring 140, and the compressive force gradually increases. After the spiral rib 151 disengages from the spiral groove 162, continue to rotate the piston rod 150 to offset the spiral groove 162 from the spiral rib 151, so that the lower end of the spiral rib 151 abuts against the upper surface of the spiral groove 162. At this time, the spring 140 enters the standby state from the free non-standby state.

[0102] As the piston rod 150 rotates, the lock block 152 can also be moved to a position aligned with the notch 121 at the top of the tooth sleeve 120. At this time, the lock block 152 can pass through the notch 121, so that the pressing head 110 bounces to the standby state.

[0103] After use, if the lotion pump 100 needs to return to the locked state, press the pressing head 110 down to the lowest point of its stroke, and then rotate the pressing head 110 in the closing direction opposite to the opening direction. During this process, the spiral rib 151 of the piston rod 150 will re-fit into the spiral groove 162 of the support seat 160, and as the piston rod 150 rotates, the spiral rib 151 interacts with the spiral groove 162, causing the support seat 160 to move upward, that is, move in the direction away from the spring 140, reducing the compressive force applied to the spring 140, so that the spring 140 returns to the non-standby state again. Even, the support seat 160 can be disengaged from the contact with the spring 140. Here, it can be seen that the spiral rib 151 can switch the spring 140 between the non-standby state and the standby state, that is, play the role of a switching mechanism. In addition, it can also be considered that the spiral rib 151 plays the role of disengaging and engaging the spring 140 with the movable part of the lotion pump 100 through the support seat 160.

[0104] Preferably, the relative positions and dimensions of the helical rib 151 in the piston rod 150 and the lock head block 152 are set such that the helical rib 151 disengages from the helical groove 162 before the lock head block 152 aligns with the notch 121 of the dental sleeve 120. In this way, it is possible to prevent the helical rib 151 from entering the helical groove 162 again during the process of pressing the pressing head 110 to pump the product.

[0105] In addition, the longitudinal length of the lock head block 152 is preferably also set such that the lock head block 152 always moves within the notch 121 during the process of pressing the pressing head 110 to pump the product and the pressing head 110 rebounds. In this way, during use, it is possible to prevent the helical rib 151 from entering the helical groove 162 again due to the rotation of the pressing head 110.

[0106] It should be specifically noted here that although in the structure specifically described above, the helical rib 151 acting as the switching mechanism is formed on the piston rod, the switching mechanism can also be formed on any other components and other positions of the movable part of the lotion pump 100, which is also within the scope of the disclosure of the present invention.

[0107] Furthermore, the switching mechanism can also be formed on the fixed part of the lotion pump 100. For example, a helical rib can be formed on the inner wall of the cylinder 130, and correspondingly, a helical groove can be formed on the outer periphery of the support seat 160. Or, in some lotion pumps with certain structures, the piston rod with a helical rib is the fixed part of the lotion pump, and the cylinder is the movable part (this situation will be explained in detail in the following embodiments). These are also not beyond the scope of the disclosure of the present invention.

[0108] <Second Embodiment>

[0109] Figures 12a - 15b The lotion pump 200 of the second embodiment of the present invention is shown. Among them, the technical features that are the same or similar to those of the lotion pump 100 of the first embodiment will not be described in detail, and only the technical features of the lotion pump 200 of the second embodiment that are not disclosed in the first embodiment will be described. Unless there are contrary statements or structural conflicts, the technical features disclosed in the first embodiment also apply to the second embodiment.

[0110] Figure 12a and Figure 12bThe emulsion pump 200 in the locked state and the emulsion pump 200 in the standby state are respectively shown. The emulsion pump 200 includes a head 210, a retainer 220, a cylinder 230, a spring 240, and a piston rod 250. A support seat 260 is provided in the cylinder 230. Similar to the first embodiment, a notch 231 is formed in the outer wall of the cylinder 230, and the guide block 261 of the support seat 260 is slidably received in the notch 231, so that the support seat 260 can only move longitudinally relative to the piston rod 250.

[0111] Figures 13a - 13d Various views of the support seat 260 in the emulsion pump 200 of the second embodiment are shown, where Figure 13a A top view of the support seat 260 is shown, Figure 13b A cross-sectional view of the support seat 260 is shown, Figure 13c Another cross-sectional view of the support seat 260 is shown, while Figure 13d A perspective view of the support seat 260 is shown.

[0112] The support seat 260 in the emulsion pump 200 of the second embodiment is also generally annular, and it has at least one guide block 261 (two guide blocks 261 arranged oppositely are shown in the figure). At least one, preferably a pair of oppositely arranged support seat notches 262, are formed on the inner side of the support seat 260. At least one support seat stop 263 is preferably formed on the inner side of the support seat 260, and preferably, the support seat stops 263 are formed on the upper and lower parts of the inner side of the support seat 260 respectively.

[0113] Figure 14a and 14b A front view and a perspective view of the piston rod 250 are respectively shown. Corresponding to the support seat notches 262 provided in the support seat 260, guide strips 251 are formed on the outer periphery of the piston rod 250. In addition, upper locking blocks 252 and lower locking blocks 253 are preferably formed on the outer periphery of the piston rod 250 and are respectively located on the upper and lower sides of the guide strips 251. The upper locking blocks 252 and the lower locking blocks 253 cooperate with the support seat stops 263, so that the piston rod 250 can only rotate along a preset direction.

[0114] The piston rod 250 and the support seat 260 cooperate with each other as Figure 15a and 15b shown.

[0115] Next, the operation mode of the emulsion pump 200 of the second embodiment will be described with reference to Figure 12a , 12b , 15a and 15b.

[0116] As Figure 12a and 15aAs shown, when the lotion pump 200 is in the locked state, the support seat 260 is located above the guide strip 251 of the piston rod 250, and the support seat notch 262 is offset from the guide strip 251, so that the position of the support seat 260 relative to the piston rod 250 is fixed.

[0117] When the lotion pump 200 needs to be used, rotate the pressing head 210 in the opening direction to align the support seat notch 262 with the guide strip 251. At this time, the pressing head 210 can be manually pulled upward to the highest point of its stroke, and the support seat 260 moves relative to the piston rod 250 to below the guide strip 251. Then continue to rotate the pressing head 210 to stagger the support seat notch 262 from the guide strip 251 again, so that the guide strip 251 restricts the support seat 260 at its lower position. At this time, the spring 240 is loaded, so that the pumping action can be performed by pressing the pressing head 210.

[0118] After use, if the lotion pump 200 is to return to the locked state, the pressing head 210 can be rotated in the reverse direction to align the support seat notch 262 with the guide strip 251 again. Then the pressing head 210 can be manually pressed to the lowest point of its stroke, and then continue to rotate the pressing head 210 to stagger the support seat notch 262 from the guide strip 251, so that the guide strip 251 keeps the support seat 260 at its upper position.

[0119] Preferably, in the case where the upper locking block 252 and the lower locking block 253 are provided on the piston rod 250 and the support seat block 263 is provided in the support seat 260, the interaction between the upper and lower locking blocks 252 and 253 and the support seat block 263 enables the user to rotate the pressing head 210 only in a preset direction.

[0120] <Third Embodiment>

[0121] Figures 16a - 17 The lotion pump 300 of the third embodiment of the present invention is shown. Among them, the technical features that are the same or similar to those of the first embodiment and the second embodiment will not be described in detail, and only the technical features of the lotion pump 300 of the third embodiment that are not disclosed in the first and second embodiments will be described. Unless there is a contrary statement or a structural conflict, the technical features disclosed in the first and second embodiments are also applicable to the third embodiment.

[0122] The lotion pump 300 includes a pressing head 310, a dental sleeve 320, a cylinder 330, a spring 340 and a piston rod 350, and the lotion pump 300 also includes a support seat 360. In the lotion pump 300 of the third embodiment, an inverted buckle ring 351 is formed on the piston rod 350, and the inverted buckle ring 351 is formed with a first inclined surface 352 facing upward. Correspondingly, a second inclined surface 361 facing downward is formed on the support seat 360.

[0123] In Figure 16a In the locked position shown, the ram 310 is at the lowest point of its stroke and the support base 360 is located above the snap ring 351. After rotating the ram 310 to the open position, the ram 310 is pulled upward to the highest point of its stroke. During this process, the snap ring 351 moves upward over the support base 360 and reaches above the support base 360. At this time, the structure of the snap ring 351 prevents the support base 360 from returning above the snap ring 351 again. Thus, the lotion pump 300 is held in Figure 16b the standby state shown.

[0124] <Fourth Embodiment>

[0125] Figure 18a and 18b FIG. shows a lotion pump 400 according to a fourth embodiment of the present invention. Among them, for the technical features that are the same or similar to those of the first to third embodiments, no detailed description will be given, and only the technical features of the lotion pump 400 in the fourth embodiment that are not disclosed in the first to third embodiments will be described. Unless there are contrary statements or structural conflicts, the technical features disclosed in the first to third embodiments are also applicable to the fourth embodiment.

[0126] The lotion pump 400 of the fourth embodiment is substantially the same as the lotion pump 100 of the first embodiment, except that the upper spring seat 141 and the lower spring seat 142 of the spring 140 are omitted. In other words, in the lotion pump 400, the upper end of the elastic strip of the spring 440 is directly connected to the support base 460, and the lower end of the elastic strip is directly connected to the lower part of the cylinder 430.

[0127] <Fifth Embodiment>

[0128] As Figures 19a - 22 FIG. shows a lotion pump 500 according to a fifth embodiment of the present application. Among them, for the technical features that are the same or similar to those of the first to fourth embodiments, no detailed description will be given, and only the technical features of the lotion pump 500 in the fifth embodiment that are not disclosed in the first to fourth embodiments will be described. Unless there are contrary statements or structural conflicts, the technical features disclosed in the first to fourth embodiments are also applicable to the fifth embodiment.

[0129] Figure 19a FIG. shows a cross-sectional view of the lotion pump 500 in the lower locked state, Figure 19b FIG. shows a cross-sectional view of the lotion pump 500 in the standby state. As can be seen from Figure 19a and 19b In the fifth embodiment, an external thread is provided at the lower part of the ram 510 of the lotion pump 500 and is fixed in the locked position by a threaded connection with the dental sleeve 520. Figure 20The external thread 511 on the indenter 510 is shown more clearly accordingly. An internal thread matching the external thread 511 is formed in the opening of the dental sleeve 520.

[0130] Furthermore, as Figures 21 - 23 shown, the piston rod 550 of the emulsion pump 500 of the fifth embodiment is formed separately from the piston 580 and connected together. The helical rib as the switching component can be formed on the outer surface of any one of the piston rod 550 and the piston 580, or a part is formed on the outer surface of the piston rod 550 and the other part is formed on the outer surface of the piston 580. In the structure shown in the figure, a helical rib 581 is formed on the outer surface of the piston 580.

[0131] Of course, the structure of the snap ring and the inclined surface in the third embodiment can also be applied to Figures 21 - 23 the case where the piston rod and the piston are formed separately as shown.

[0132] Figures 24 - 27 shows a deformation mode of a part of the structure in the fifth embodiment. Among them, the piston rod 650 and the piston 680 are also formed separately and then connected together. Different from the structure shown in Figures 21 - 23 , in the structure shown in Figures 24 - 27 , a sleeve 670 is additionally provided, and a helical rib 671 or other types of switching components are formed on the outer surface of the sleeve 670. And the sleeve 670 is sleeved on the outer surfaces of the connected piston rod 650 and the piston 680, as shown in Figure 27 . Preferably, a structure such as a convex portion 672 can also be formed on the inner surface of the sleeve 670 to contribute to the tight fit with the outer surfaces of the piston rod 650 and / or the piston 680.

[0133] <Sixth Embodiment>

[0134] Figure 28a and 28b shows the emulsion pump 700 of the sixth embodiment of the present application. Among them, the technical features that are the same as or similar to those of the first to fifth embodiments and their deformation modes will not be described in detail, and only the technical features unique to the emulsion pump 700 of the sixth embodiment will be described. Moreover, unless there is a contrary statement or a structural conflict, the technical features disclosed in the first to fifth embodiments and their deformation modes are also equally applicable to the fifth embodiment.

[0135] Figure 28a shows a cross-sectional view of the emulsion pump 700 in the lower lock head state, Figure 28bA cross-sectional view of the emulsion pump 700 in a standby state is shown. As can be seen from the figure, the emulsion pump 700 includes a head 710, and a cylinder 730 is connected to the lower part of the head 710. Thus, in the sixth embodiment, the movement (such as rotation or up-and-down movement) of the head 710 drives the cylinder 730 to move together, so that the head 710 and the cylinder 730 constitute at least a part of the movable part of the emulsion pump.

[0136] In addition, in the emulsion pump 700 of the sixth embodiment, a spring bracket 770 is connected to the dental brace 720, and one end of the spring 750 (specifically the lower end in Figure 28a and 28b is supported on the spring bracket 770, and the other end of the spring 750 (the upper end in the figure) is supported on the spring support seat 760.

[0137] A piston rod 740 is also fixedly connected to the spring bracket 770, and a piston at one end of the piston rod 740 extends into the cylinder 730.

[0138] As Figure 28a and 28b shown, a first convex portion 731 and a second convex portion 732 are formed on the outer wall of the cylinder 730, and a groove 761 is formed on the inner surface of the spring support seat 760. As the head 710 and the cylinder 730 move up and down, the groove 761 can cooperate with one of the first convex portion 731 and the second convex portion 732 respectively. For example, when the groove 761 cooperates with the upper convex portion 731 (such as the state in Figure 28a ), the spring 750 is in an unloaded state, and when the groove 761 cooperates with the lower second convex portion 732, or even below the second convex portion 732, the spring 750 enters a loaded state.

[0139] Therefore, in the sixth embodiment, the first convex portion 731 and the second convex portion 732 formed on the outer wall of the cylinder 730 act as a switching mechanism. Of course, the implementation structures such as the spiral rib and the guide strip mentioned in the above embodiments can also be applied to the sixth embodiment.

Claims

1. A lotion pump, the lotion pump is used to be installed on a container to dispense a product in the container, the lotion pump comprises a movable part and a fixed part, in use, the movable part can move relative to the container, the fixed part remains stationary relative to the container, characterized in that: The lotion pump further comprises: an elastic reset mechanism, one end of which is in contact with or connected to the movable portion, and the other end of which is fixed to the fixed portion; and a switching mechanism, the switching mechanism being arranged on the movable part, and the switching mechanism being arranged to cooperate with the elastic reset mechanism, so that when the movable part is rotated in a first direction, the one end of the elastic reset mechanism moves to a first position relative to the movable part, so that the elastic reset mechanism is loaded and enters a standby state, and when the movable part is rotated in a second direction opposite to the first direction, the one end of the elastic reset mechanism moves to a second position relative to the movable part, so that the elastic reset mechanism enters a non-standby state; The switching mechanism includes a first matching portion, and a second matching portion is formed on the elastic reset mechanism, and when the movable part moves relative to the container, the first matching portion cooperates with the second matching portion to make the one end of the elastic reset mechanism move between the first position and the second position; The elastic reset mechanism comprises a spring and a spring support seat, wherein the spring support seat is located at one end of the spring, and the second matching portion is formed on the spring support seat; One of the first mating portion and the second mating portion is a spiral ridge, and the other of the first mating portion and the second mating portion is a spiral groove, and the spiral ridge can be mated into the spiral groove, so that when the movable part rotates, the interaction between the spiral groove and the spiral ridge causes the one end of the elastic reset mechanism to move between the first position and the second position.

2. The lotion pump according to claim 1, characterized in that: The movable part includes a pressure head, a piston rod and a piston, wherein the piston rod is connected to the lower part of the pressure head and the piston is arranged on the piston rod, and the fixed part includes a brace and a cylinder, wherein the cylinder is connected to the brace, and at least the part of the piston rod on which the piston is arranged extends into the interior of the cylinder.

3. The lotion pump according to claim 2, characterized in that: A locking block is formed on one side of the outer circumferential surface of the piston rod and the top of the brace, and a notch is formed on the other side of the outer circumferential surface of the piston rod and the top of the brace. By rotating the piston rod, the locking block can be aligned with the notch, so that the pressure head and the piston rod can move upward.

4. The lotion pump according to claim 3, characterized in that: As the piston rod rotates, the spiral ridge can come out of the spiral groove, and the sizes and relative positions of the spiral ridge and the spiral groove are set so that as the piston rod rotates, the spiral ridge comes out of the spiral groove before the locking block is aligned with the notch.

5. The lotion pump according to claim 1, characterized in that: The fixed part includes a brace and a cylinder, and the movable part includes a pressure head and a piston rod, wherein the cylinder is connected to the brace, and at least the part of the piston rod where the piston is provided extends into the interior of the cylinder, wherein one of the one end of the elastic reset mechanism and the outer wall of the cylinder includes a guide block, and a notch is formed on the other of the one end of the elastic reset mechanism and the outer wall of the cylinder, and the guide block is at least partially accommodated in the notch.

6. The lotion pump according to claim 1, characterized in that: The movable part includes a pressure head, a piston rod and a piston, wherein the piston rod is connected to the lower part of the pressure head, and the piston is arranged on the piston rod, wherein the first matching portion is formed on the outer peripheral surface of the piston rod and / or the piston.

7. The lotion pump according to claim 1, characterized in that: The movable part includes a pressure head, a piston rod, a piston and a sleeve, wherein the piston rod is connected to the lower part of the pressure head, and the piston is arranged on the piston rod, wherein the sleeve is sleeved on the outside of the piston rod and / or the piston, and the first matching part is formed on the outer surface of the sleeve.

8. The lotion pump according to claim 1, characterized in that: The elastic restoring mechanism comprises at least one elastic strip.

9. The lotion pump according to claim 8, characterized in that The elastic reset mechanism also includes: an annular spring upper seat, the upper end of the elastic strip is connected to the spring upper seat, and / or An annular spring lower seat, the lower end of the elastic strip is connected to the spring lower seat.

10. The lotion pump according to claim 9, characterized in that The elastic strip is connected to the spring upper seat and / or the spring lower seat via a pivot portion, wherein the pivot portion pivots and folds when the elastic return mechanism is compressed.

11. The lotion pump according to claim 9, characterized in that: A first guide groove is formed on the inner side of the spring upper seat and one of the fixed part, and a first guide strip is formed on the inner side of the spring upper seat and the other of the fixed part, the first guide groove and the first guide strip cooperate with each other; and / or A second guide groove is formed on one of the inner side of the spring lower seat and the fixed part, and a second guide strip is formed on the other of the inner side of the spring lower seat and the fixed part, and the second guide groove and the second guide strip are matched.

12. The lotion pump according to any one of claims 9 to 11, characterized in that: An undercut portion is provided at the lower portion of the fixing portion, and the undercut portion fixes the spring lower seat of the spring.

13. The lotion pump according to claim 8, characterized in that: When viewed along the axial direction of the lotion pump, the elastic strip extends around at least a portion of the outer circumference of the cylinder of the lotion pump.

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