TWI625464B - Micro-stage sputum pump - Google Patents

Abstract

A sputum pump includes: a spray head, a cover and a metering unit. The spray head and the cover are coupled together by a pump core set to limit the reciprocating movement of the spray head relative to the cover at the original and lower pressure positions. The adjustment unit includes: a movable member and a knob. Wherein, the movable member is disposed in the sputum pump and can be displaced along the axial direction to determine the stroke of the nozzle relative to the movement of the cover, and the movable member has at least one guiding portion. The knob is disposed on the cover and rotatable about the movable member. The knob has at least one spiral groove for allowing the guiding portion to be inserted into the spiral groove. When the guiding portion comes to the lower part of the spiral groove, the movable member is close to the cover; when the guiding portion comes to the height of the spiral groove, the movable member is away from the cover, thereby determining the stroke of the nozzle relative to the cover to control the flow, about 0 ~1ml range.

Description

Micro-stage sputum pump

The invention relates to the field of flow control, in particular to a micro-segmented sputum pump.

The sputum pump in the market is placed on a container like a bottle or a can. The container stores some fluid (such as emulsion) inside the container, and flows to the palm of a user through the pressing action of the sputum pump to perform skin care maintenance, bathing, cleaning, disinfection and the like.

Whether it is a man, a woman, an old man or a child, the difference in the amount of pressure may squeeze out different flows; sometimes the flow is low, and it is inevitable that the sputum pump will be pressed again; if the flow is too much, even spilling out of the palm is more wasteful. . Therefore, the conventional sputum pump is very inconvenient to use.

Therefore, how to improve the flow control of the sputum pumping has become an urgent problem to be solved by the present invention.

In order to achieve the above object, the present invention provides a micro-stage metering type sputum pumping, one of the main purposes is to adopt a fine-tuning structure to determine the flow rate of the sputum pumping, to achieve a fine adjustment function, and to be more convenient to use.

One of the main purposes of the present invention is to adopt a structure in which a spiral is converted into a height-lifting structure to obtain a multi-stage fine adjustment effect and determine the amount of fluid used.

For the above purposes, the micro-segmented sputum pump of the present invention comprises: a spray head and a cover, which are coupled together by a pump core set to limit the spray head relative to the cover in an original position and a lower pressure position. Reciprocating motion a modulating unit comprising: a movable member disposed in the sputum pump for axial displacement, determining a stroke of the nozzle relative to the cover movement, the movable member having at least one guiding portion; and a knob configured The cover is rotatable about the movable member, the knob having at least one spiral groove allowing the guide portion to be placed in the spiral groove.

When the guiding portion comes to the lower part of the spiral groove, the movable member is close to the cover, and the stroke of the nozzle to move relative to the cover is determined to be the longest. When the guiding portion reaches the height of the spiral groove, the movable member is away from the cover, and the stroke of the nozzle to move relative to the cover is determined to be the shortest.

Wherein, the nozzle sleeve is formed on a periphery of the ring wall formed on the cover, and at least one sliding portion is formed at the nozzle facing the ring wall. The cover forms at least one longitudinal groove in the axial direction facing the spray head, allowing the sliding portion to reciprocate in the longitudinal groove. The movable member is a ring body that is sleeved around the periphery of the spray head and has one or more sliders that can be placed into the longitudinal grooves. Moreover, the movable member has a bottom ring which is sleeved on the outer periphery of the ring wall, and the slider is raised at the bottom ring facing the ring wall.

In addition, the cover has an outer wall. The knob has a ring groove that allows the outer wall to be placed into the ring groove and guides the knob to rotate about the movable member. Furthermore, the outer wall further has a concave portion, and the knob has a convex portion which is raised at the concave portion of the annular groove to cooperate with the concave portion to cause fine adjustment. Specifically, the recess is a linear fine-grained pattern that is trapped in the outer wall. The convex portion is at least one concave-convex and fine-grained linear rib, which causes a multi-stage fine adjustment effect.

In the micro-segment type sputum pump of the present invention, the knob has a non-slip portion on the outer surface, and the anti-slip portion is a plurality of straight fine lines protruding from the outer surface of the knob. Secondly, the knob has a usage recognition area, and the usage identification area is selected from one of a scale, a number, an English word, a pattern and a color.

Thus, the micro-stage-adjusting sputum pump of the present invention uses a spiral to convert the height-adjusting fine-tuning structure, determines the flow rate of the sputum pumping, achieves a fine multi-stage adjustment function, determines the amount of fluid used, and is more convenient to use. .

The above and other objects, features, and advantages of the present invention will become more apparent and understood.

10‧‧‧汲 fluid pump

12‧‧‧ Spring

14‧‧‧shims

16‧‧‧Sipper

20‧‧‧ sprinkler

21‧‧‧Sliding section

22‧‧‧Nozzles

24‧‧ ‧ Connection Department

26‧‧‧ flow path

28‧‧‧ inner rib

30‧‧‧ spring sleeve

32‧‧‧Outer ribs

34‧‧‧ Ring Department

36‧‧‧Card Department

40‧‧‧ piston rod

41‧‧‧Restrictions

42‧‧‧ Ring groove

43‧‧‧Connecting section

44‧‧‧ channel

45‧‧‧Piston

46‧‧‧Export

48‧‧‧ Entrance

50‧‧‧ check valve

52‧‧‧Open end

54‧‧‧closed end

56‧‧ ‧block

60‧‧‧ body

61‧‧‧ venting holes

62‧‧‧Flange

63‧‧‧Reducing section

64‧‧‧ Pressure chamber

66‧‧‧Mobile room

68‧‧ ‧ room

70‧‧‧ cover

71‧‧‧Baffle

72‧‧‧ internal thread

73‧‧‧Inlay

74‧‧‧External wall

75‧‧‧First space

76‧‧‧Circle

77‧‧‧Second space

78‧‧‧Spring groove

79‧‧‧Axis hole

80‧‧‧Activities

82‧‧‧Guidance

84‧‧‧ bottom ring

86‧‧‧ Slider

88‧‧‧ longitudinal ditch

90‧‧‧ knob

91‧‧‧ convex

92‧‧‧Slip-stop

93‧‧‧ recess

94‧‧‧Use identification area

95‧‧‧low

96‧‧‧ spiral groove

97‧‧‧High

98‧‧‧Circle

H‧‧‧ Height

Θ‧‧‧ angle

Figure 1 is an exploded view of a preferred embodiment of the sputum pump of the present invention.

Figures 2 and 3 are cross-sectional views of the continuous operation of the sputum pump.

Figure 4 is a schematic illustration of the sputum pumping in a locked state.

Figure 5 is a perspective view of the knob at another angle.

Figure 6 is a partial cross-sectional view of the knob and the cover assembled.

Figure 7 is a plan view showing the inner surface of the knob unfolded.

Referring to FIGS. 1 to 3, a specific structure of a preferred embodiment of the sputum pump 10 is illustrated, including: a spring 12, a gasket 14, a straw 16, a nozzle 20, a cover 70, and a pump core assembly. With a modulation unit. Wherein, the pump core assembly couples the spray head 20 and the cover 70 together, and restricts the reciprocating movement of the spray head 20 relative to the cover 70 at the original and lower pressing positions. The adjustment unit determines the length of the stroke of the nozzle 20, and relatively affects the amount of fluid used.

In the figure, the head 20 is a round case, the inside of which is formed by a concentric circle to form a joint portion 24, and three sliding portions 21 are formed on the inner side of the shell wall in the axial direction. A nozzle 22 is protruded outside the nozzle 20, and a nozzle 26 is formed inside the nozzle 22, one end of the flow path 26 leads to the outside, and the other end is connected to the joint 24. The coupling portion 24 is substantially in the shape of a tube, and has one end closed and the other end open, and an inner rib 28 is raised on the inner surface of the tube wall.

The cover 70 is also a round casing whose top is closed by a partition 71 to collectively define a second space 77. The cover 70 forms an internal thread 72 around the wall surface of the second space 77, and an outer wall 74 and a ring wall 76 are concentrically arranged on the top surface of the partition 71. The outer wall 74 defines a first space 75 in cooperation with the partition plate 71. The first space 75 is partitioned into two inner and outer spaces by the ring wall 76. The center of the inner space is a shaft hole 79 extending through the partition plate 71. The shaft hole 79 A groove 73 and a spring groove 78 are formed around the groove. The groove 73 has a diameter larger than the diameter of the spring groove 78, and its opening faces the second space 77. Conversely, the opening of the spring slot 78 is directed above the cover 70.

The pump core set is composed of a spring sleeve 30, a piston rod 40, a piston 45, and a The check valve 50 is composed of a body 60. Wherein, the spring sleeve 30 is hollow, and an inner circumferential surface thereof forms a latching portion 36. The outer sleeve rib 32 is formed near the end portion of the spring sleeve 30, and a ring portion 34 extends in the radial direction at an intermediate portion of the outer surface of the spring sleeve 30. The piston rod 40 is a round rod body of different diameters, one end of which extends radially in a restricting portion 41, the outer end of which forms a ring groove 42 and an axially extending connecting portion 43 in the center of the restricting portion 41. A piston 44 is formed in the interior of the piston rod 40. The passage 44 defines an outlet 46 through the end of the piston rod 40. The passage 44 passes through the shaft in the radial direction as two inlets 48, each inlet 48 being adjacent to the restriction portion 41. The check valve 50 is similar to the cartridge case, and its two ends are regarded as an open end 52 and a closed end 54, and a plurality of stoppers 56 are formed on the outer surface of the check valve 50 in the radial direction. The stoppers 56 are spaced apart from each other by a certain distance. . The body 60 is a class-shaped cylinder whose internal diameter is divided into a pressure chamber 64, a flow chamber 66 and a chamber 68, and the flow chamber 66 is coupled to the pressure chamber 64 and the chamber 68. A flange 62 projects beyond the wall of the pressure chamber 64 adjacent the end of the body 60. A reduced diameter portion 63 is formed inside the wall of the flow chamber 66.

When assembled, the piston rod 40 passes through the piston 45 to support the engagement section 43 into the open end 52 of the check valve 50. The check valve 50 maintains a slight frictional relationship with the engaging section 43 around the inner side of the open end 52, so that the engaging section 43 does not easily disengage from the open end 52, and the check valve 50 can be moved back and forth relative to the engaging section 43.

The body 60 is coupled to the cover 70 to engage the recess 73 with the flange 62 so that the body 60 and the cover 70 are not easily separated. At this point, the engagement section 43 along with the check valve 50 passes through the pressure chamber 64, and the block 56 is forced over the reduced diameter portion 63 to enter the flow chamber 66. At this point, the piston rod 40 and the piston 45 are co-located into the pressure chamber 64 of the body 60.

In addition, the spring sleeve 30 is inserted into the coupling portion 24, and the outer rib 32 catches the inner rib 28, preventing the spring sleeve 30 from leaving the nozzle 20, so that the inside of the spring sleeve 30 communicates with the coupling portion 24. The spring sleeve 30 passes through the shaft hole 79 and thus covers the outside of the piston rod 40 until the ring groove 42 is combined with the latching portion 36, so that the piston rod 40 and the spring sleeve 30 are not easily detached. As such, the outlet 46 of the passage 44 passes through the spring sleeve 30 and the coupling portion 24 to the flow passage 26 of the nozzle 22.

At the same time, the spring 12 is disposed between the ring portion 34 and the spring groove 78 to provide the nozzle 20 phase. The force required to move the cover 70 is normal in the original position (as shown in Fig. 3). Further, the piston 45 is passive, and is pushed by the restricting portion 41 to slide back and forth on the piston rod 40, thereby resisting the inner surface of the cover 70, and sealing the vent hole 61.

When the lid 70 is locked to the opening of the container such as a bottle or can, the gasket 14 enters the second space 77 of the lid 70 and fits over the body 60 to abut against the partition 71 to prevent fluid from escaping or leaking inside the container. One end of the straw 16 is urged against the wall of the chamber 68 and the other end is deep toward the container.

When the head 20 is forced to the depressed position (as shown in FIG. 2), the spring sleeve 30 pushes the piston 45 to move in the same direction with respect to the body 60, and the closed relationship of the vent hole 61 is released. As the spring sleeve 30 is displaced in the same direction, the piston rod 40 is moved until the restricting portion 41 is positioned at the communication portion between the pressure chamber 64 and the flow chamber 66, and the inlet 48 is kept open by the notch shape of the restricting portion 41. At the same time, the frictional relationship between the engaging portion 43 and the inner wall of the check valve 50 drives the check valve 50 to displace, and the closed end 54 blocks the communication between the flow chamber 66 and the chamber 68 to prevent backflow of the fluid. The engagement section 43 continues into the depth of the check valve 50, maintaining a reversing state, causing fluid to flow from the flow chamber 66 into the pressure chamber 64, into the passage 44 of the piston rod 40 via the inlet 48, and through the spring sleeve 30 from the outlet 46. Internally, the steering flow path 26 exits the outside of the nozzle 22.

Because there is a gap between the spring sleeve 30 and the cover 70, external gas is allowed to flow into the piston 45 through the slit, and is diverted into the container through the vent hole 61. The interior of the container is not vacuumed and does not affect the action of the sputum pump 10 to draw or pressurize the fluid.

When the external force of the head 20 disappears, the spring 12 applies a force to the ring portion 34 to urge the spring sleeve 30 to displace relative to the body 60, causing the head 20 to begin moving toward the home position (as shown in Fig. 3). The engagement section 43 begins to move away from the check valve 50 as the piston rod 40 moves in unison. When blocked by the open end 52, the engaging section 43 drives the check valve 50 to move in the same direction, so that the communication between the flow chamber 66 and the chamber 68 is no longer blocked by the closed end 54, but is restored to the open state. As such, the pump core sets suction to the chamber 68 and draws fluid through the suction tube 16 into the flow chamber 66.

When the stopper 56 is blocked by the reduced diameter portion 63, the fluid of the flow chamber 66 is filled into the pressure chamber 64 via the gap between the respective stoppers 56. Therefore, the fluid of the container will continue to enter the flow chamber 66. when The restricting portion 41 rises with the piston rod 40, and the inlet 48 is closed by the piston 45 to prevent fluid from entering the passage 44. The piston 45 is urged to be displaced in the same direction by the restricting portion 41, thereby closing the vent hole 61 to prevent outside air from flowing into the container, waiting for the nozzle 20 again pressed down.

Then, the adjustment unit is seen to be composed of a movable member 80 and a knob 90. The movable member 80 is disposed in the sputum pump 10 and can be displaced along the axial direction, and determines the stroke of the nozzle 20 relative to the cover 70 to determine the amount of fluid used. The knob 90 is disposed on the cover 70 to be rotatable about the movable member 80 to determine the amount of displacement of the movable member 80.

Specifically, the movable member 80 is a ring body whose outer surface protrudes by three guide portions 82 in equal parts. The open end of the movable member 80 extends in the radial direction by a bottom ring 84, and three sliders 86 are raised on the inner circumferential surface of the bottom ring 84. The knob 90 is also a ring body having three spiral grooves 96 formed on its inner circumferential surface, and is recessed into a ring groove 98 at the end surface of the knob 90, and a convex portion 91 is raised on the wall surface of the ring groove 98 (as shown in Fig. 6).

The knob 90 is sleeved around the periphery of the movable member 80 such that the guide portions 82 are placed in the corresponding spiral grooves 96. When the outer wall 74 is placed in the annular groove 98, the convex portion 91 cooperates with a concave portion 93 formed on the outer wall 74 to cause fine adjustment, and the movable member 80 surrounds the periphery of the nozzle 20 without hindering the rotation of the knob 90 around the nozzle 20. At this point, the bottom ring 84 is below the spray head 20, even very close to the partition 71 of the cover 70.

It should be noted that the cover 70 has three longitudinal grooves 88, and each longitudinal groove 88 is axially formed at the ring wall 76 facing the head 20 (or the movable member 80), allowing the slider 86 to be co-located with the sliding portion 21. Into the corresponding longitudinal groove 88, the movable member 80 and the head 20 are prevented from rotating relative to the cover 70 and can only reciprocate in the axial direction.

In the fifth and sixth figures, the concave portion 93 is a linear fine-grained pattern which is trapped in the outer wall 74, and the convex portion 91 is a single linear rib which is raised at the concave groove 93 at the annular groove 98. Multi-stage fine-tuning effect.

In the second to fourth and seventh figures, the bottom ring 84 of the movable member 80 abuts against the partition 71 of the cover 70, indicating that the guide portion 82 comes to the lower portion 95 of the spiral groove 96. Under the restriction of the sliding portion 21 in cooperation with the longitudinal groove 88, the head 20 moves the longest distance with respect to the cover 70, so the fluid amount is the largest.

When the knob 90 is rotated by a certain amount, the wall of the spiral groove 96 drives the guide portion 82 from the lower portion 95 to the upper portion 97 at an angle θ, which determines that the stroke of the head 20 relative to the cover 70 is the shortest. As a result, the flow rate is controlled in the range of about 0 to 1 ml. In some embodiments, the flow rate is designed to be about 0 to 0.5 ml, which is also within the scope of the present application.

In particular, the height 97 of the spiral groove 96 prevents the head 20 from being depressed, forming a state in which the head 20 is locked, and remains stationary. Therefore, the height H of the movable member 80 corresponds to the pressing stroke of the head 20.

In addition, the knob 90 is provided with a stop-slip portion 92 as shown in FIG. 1 , and the anti-slip portion 92 is a plurality of straight fine lines protruding from the outer surface of the knob 90. In some embodiments, the anti-slip portion 92 can be a plurality of shallow holes or humps formed on the exterior of the knob 90.

Secondly, the knob 90 has a quantity identification area 94, which is selected from one of a scale, a number, an English word, a pattern and a color, and is useful for discriminating the amount of fluid used.

Claims (10)

A micro-stage metering type sputum pump comprising: a spray head (20) and a cover (70) coupled together by a pump core set to limit the spray head (20) relative to the cover (70) in an original position Reciprocating with the lower pressing position, at least one longitudinal groove (88) is formed axially at the cover (70) facing the head (20); a metering unit comprising: a movable member (80) disposed in the sputum The pump (10) is displaceable along the axial direction to determine the stroke of the nozzle (20) relative to the cover (70), and the movable member (80) is a ring body disposed around the periphery of the shower head (20), which has at least one guide a lead portion (82) and one or more sliders (86) that can be inserted into the longitudinal grooves (88); and a knob (90) disposed on the cover (70) to be rotatable about the movable member (80), The knob (90) has at least one spiral groove (96) that allows the guide portion (82) to be placed into the spiral groove (96); when the guide portion (82) comes to the lower portion (95) of the spiral groove (96), The movable member (80) is close to the cover (70), and the travel of the spray head (20) relative to the cover (70) is determined to be the longest; when the guide portion (82) reaches the height of the spiral groove (96) (97), the activity The piece (80) is away from the cover (70) and determines the stroke of the nozzle (20) relative to the cover (70). short. The micro-segment type sputum pump according to claim 1, wherein the nozzle (20) is sleeved on a periphery of a ring wall (76) formed on the cover (70) at the nozzle (20). The formation of at least one sliding portion (21) at the facing wall (76) allows the sliding portion (21) to reciprocate in the longitudinal groove (88). The micro-segment type sputum pump according to claim 2, wherein the movable member (80) has a bottom ring (84), and the bottom ring (84) is sleeved on the ring wall (76). At the periphery, the slider (86) is raised at the bottom ring (76) facing the ring wall (76). The micro-segment type sputum pump according to claim 1, wherein the cover (70) has an outer wall (74), and the knob (90) has a ring groove (98) allowing The outer wall (74) is placed into the annular groove (98), and the guiding knob (90) is rotated about the movable member (80). The micro-segment type sputum pump according to claim 4, wherein the outer wall (74) further has a concave portion (93), and the knob (90) has a convex portion (91). The convex portion (91) is raised at the concave groove (93) of the annular groove (98), and can cooperate with the concave portion (93) to cause fine adjustment. The micro-segment type sputum pump according to claim 5, wherein the concave portion (93) is a linear fine-grained pattern which is trapped in the outer wall (74), and the convex portion (91) It is a linear rib with at least one concave and convex matching finely scribed, resulting in multi-stage fine adjustment. The micro-segment type sputum pump according to claim 1, wherein the knob (90) has a slip-stop portion (92). The micro-segment type sputum pump according to claim 7, wherein the anti-slip portion (92) is a plurality of straight fine lines protruding from the outer surface of the knob (90). The micro-segment type sputum pump according to claim 1, wherein the knob (90) has a usage identifying area (94). The micro-segment type sputum pump according to claim 9, wherein the usage identification area (94) is selected from one of a scale, a number, an English word, a pattern and a color.