Allocator

Abstract

The dispenser (1) of the present invention is formed with a main body (32) having a recess (39) and a cover (31) covering an opening (33) of the main body to form a pump chamber (30). Liquid in the pump chamber is discharged from a nozzle (4) by performing a discharge operation in which the cover is pressed toward the pump chamber to deform the cover, and the liquid flows into the pump chamber (30) by releasing the discharge operation. The dispenser (1) is provided with a press support portion (32b) disposed opposite to the cover (31), and the discharge operation is performed by pinching the top (31a) of the cover and the press support portion (32b) with fingers from the side of the main body (32).

Description

Technical Field

[0001] The present invention relates to a dispenser. Background Art

[0002] Patent Document 1 describes a pump having a pump chamber formed inside a wall body that can shrink and recover, and a discharge operation in which the wall body is compressed toward the pump chamber to shrink the pump chamber, thereby discharging fluid from a nozzle connected to the pump chamber via a discharge valve.

[0003] [Prior Technical Literature]

[0004] [Patent Document]

[0005] [Patent Document 1] US2009071977(A1) Summary of the invention

[0006] The present invention relates to a dispenser, which is formed by a main body having a recessed portion and a cover body covering an opening of the main body to form a pump chamber, and a liquid in the pump chamber is discharged from a nozzle portion by performing a discharging operation of pressing the cover body toward the pump chamber to deform it, and the liquid flows into the pump chamber by releasing the discharging operation. The dispenser of the present invention is provided with a pressing support portion disposed opposite to the cover body, and the discharging operation is performed by pinching the top of the cover body and the pressing support portion with fingers from the side of the main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a cross-sectional view for explaining the configuration of the dispenser according to the first embodiment of the present invention and the state before the dispensing operation.

[0008] Figure 2 This is a perspective view for explaining the structure of the dispenser according to the first embodiment.

[0009] Figure 3 This is an exploded view for explaining the structure of the dispenser according to the first embodiment.

[0010] Figure 4 This is a diagram for explaining the usage of the dispenser according to the first embodiment.

[0011] Figure 5 This is a cross-sectional view showing the state of the dispenser in the initial stage of the dispensing operation according to the first embodiment.

[0012] Figure 6 This is a cross-sectional view showing the state of the dispenser after the dispensing operation according to the first embodiment.

[0013] Figure 7 The present invention is a second embodiment of the present invention, which describes the configuration of the dispenser and the state before the dispensing operation. Fig. 9 AA line section view.

[0014] Figure 8 This is a perspective view for explaining the structure of the dispenser according to the second embodiment.

[0015] Fig. 9 This is a diagram for explaining the usage of the dispenser according to the second embodiment.

[0016] Fig.10 It is a cross-sectional view showing the state of the discharge valve side after the discharge operation of the dispenser according to the second embodiment.

[0017] Fig.11 It is a cross-sectional view showing the state of the suction valve side after the discharge operation of the dispenser according to the second embodiment. DETAILED DESCRIPTION

[0018] Patent Document 1 assumes that the spherical wall portion is compressed and contracted by wrapping the wall portion with the whole palm or by pinching it with fingers during the dispensing operation. However, when pinching it with fingers, the position of the fingers may be offset depending on the deformation direction of the wall portion, and the dispensing operation may not be fully performed.

[0019] The present invention relates to a dispenser which eliminates the above-mentioned disadvantages of the prior art.

[0020] Hereinafter, the present invention will be described based on preferred embodiments thereof with reference to the drawings.

[0021] [First embodiment]

[0022] like Figure 1 to Figure 3 As shown in FIG. 1 , a dispenser 1 according to a first embodiment of the present invention includes a cap 2 , a pump 3 , and a nozzle 4 . Figure 1 , Figure 2 The state of the dispenser 1 before the dispensing operation is shown. Figure 5 , Figure 6 Indicates the state after the dispensing operation of the dispenser 1 starts. Figure 5 Indicates the status after the operation has just started. Figure 6 Indicates the state after the discharging operation. The so-called before the discharging operation refers to the state before the discharging operation is performed on the dispenser 1, and the so-called after the discharging operation refers to the state after the discharging operation is performed on the dispenser 1. Figure 3 This is an exploded view for explaining the structure of the dispenser 1.

[0023] The pump unit 3 includes a cover body 31 and a housing 32 as a main body having a recess 39 inside and on which the cover body 31 is installed. The pump unit 3 is formed into a pump chamber 30 by the cover body 31 and the housing 32. The housing 32 is made of resin and is roughly in the shape of a bottomed cylinder. The housing 32 is formed with an opening 33 on one end face 32a in the axial direction X. In the present embodiment, the axial direction X is consistent with the pressurization direction when the discharge operation is performed, and the diameter direction Y is equivalent to the diameter direction of the cover body 31 and the pump unit 3 when the pump unit 3 is observed from the cover body 31 side.

[0024] The housing 32 has a circular cross-sectional flow path that passes through the pump section 3 along a direction perpendicular to the axial direction X, i.e., a diameter direction Y. An inlet path 341 is formed on one end of the flow path, and an outlet path 342 is formed on the other end of the flow path. The inlet path 341 and the outlet path 342 are respectively connected to the pump chamber 30. The cover 2 is mounted on the outer periphery of the inlet path 341. The cover 2 has three cylindrical sections 21, 22, and 23 having the same center but different diameters. The cylindrical section 21 has a thread formed on its inner circumference, such as Figure 4 As shown, the dispenser 1 is screwed to the mouth and neck portion 101 of the liquid storage container 100 formed of a film material by rotating relative to the mouth and neck portion 101, thereby forming a mounting portion for mounting the dispenser 1 on the liquid storage container 100. Figure 1 , Figure 3 As shown, the outer periphery of the suction path 341 is inserted into the inside thereof, and the cover portion 2 and the pump portion 3 are integrated by welding using laser or the like.

[0025] like Figure 4 As shown, the liquid storage container 100 is an inverted type used by hanging from, for example, a towel rack 160 by means of a hook 150. The dispenser 1 mounted on the liquid storage container 100 is such that the nozzle portion 4 is located in a downwardly oriented position, and the liquid G1 contained in the container is sucked from the liquid storage container 100 located above the pump. When the dispenser 1 is subjected to a dispensing operation by pinching the user's fingers 170 [for example, the thumb 171 and the index finger 172], a fixed amount of liquid G in the pump chamber 30 is discharged from the nozzle portion 4, and when the dispensing operation is released, the liquid G1 is sucked from the liquid storage container 100 into the pump chamber 30.

[0026] That is, in this embodiment, the end surface 32b constitutes a pressing support portion disposed opposite to the cover 31, and the ejection operation can be performed by pinching the top of the cover 31 and the end surface 32b with fingers 171 and 172 from the side of the housing 32. The end surface 32b that becomes the pressing support portion is formed as a flat surface.

[0027] When the dispenser 1 is installed in the liquid storage container 100, the cylindrical portion 23 is inserted into the neck portion 101 and is located in the liquid storage container 100. Figure 1 , Figure 3As shown, the interior thereof is formed as a liquid inflow path 231. A suction port 232 communicating with the liquid inflow path 231 and the suction path 341 is formed in the wall portion 22a formed at the boundary between the cylindrical portion 22 and the cylindrical portion 23.

[0028] Inside the cylindrical portion 22, as shown in FIG. Figure 1 As shown, a suction valve 5 is provided. The suction valve 5 includes a valve body that opens and closes the suction port 232, and a support portion that supports the valve body at intervals in the circumferential direction, and is installed in a space formed between the inner end surface 22b of the wall portion 22a and the end surface 341a of the suction path 341. That is, the suction valve 5 is held in a state of being clamped from both sides by the cover portion 2 and the pump portion 3. The suction valve 5 is a resin molded product. The suction valve 5 is formed to close the valve when the internal pressure of the pump chamber 30 becomes high, shielding the suction port 232 and preventing the liquid from flowing from the liquid storage container 100 into the pump chamber 30. The suction valve 5 is formed to open the valve when the internal pressure of the pump chamber 30 becomes low, thereby opening the suction port 232 and sucking the liquid G1 from the liquid storage container 100.

[0029] like Figure 1 , Figure 3 As shown, the discharge path 342 located on the opposite side of the suction path 341 is formed in a manner connected to the cylindrical nozzle mounting portion 343. The nozzle portion 4 is mounted on the nozzle mounting portion 343. The nozzle portion 4 has a nozzle internal flow path 41 formed in a manner that passes through the nozzle portion, and a mounting flange 42 for mounting on the nozzle mounting portion 343. A discharge port 46 is formed at one end 41a [nozzle front end 4a] of the nozzle internal flow path 41. The other end 41b of the nozzle internal flow path 41 is formed in a manner connected to the discharge port 344 formed at the end of the discharge path 342. An annular groove 43 having a step portion 44 is formed inside the mounting flange 42. The cylindrical nozzle mounting portion 343 is inserted into the groove 43. A convex portion 45 that engages with the step portion 44 is formed on the outer peripheral surface of the nozzle mounting portion 343. The dispenser 1 is formed so that the nozzle unit 4 is prevented from falling off by inserting the nozzle attachment portion 343 into the groove 43 and engaging the step portion 44 with the convex portion 45 .

[0030] The discharge valve 6 is arranged inside the nozzle mounting portion 343. The discharge valve 6 includes a valve body that opens and closes the discharge port 344, and a support portion that supports the valve body at intervals in the circumferential direction, and is arranged in a space formed between the end 4b of the nozzle portion 4 and the inner end surface 343a of the nozzle mounting portion 343. That is, the discharge valve 6 is held in a state of being clamped from both sides by the nozzle portion 4 and the pump portion 3. The discharge valve 6 is a resin molded product. The discharge valve 6 is formed to open the valve and open the discharge port 344 when the internal pressure of the pump chamber 30 increases, and discharge the liquid in the pump chamber 30 from the discharge port 46 to the outside through the nozzle internal flow path 41. The discharge valve 6 is formed to close the valve and seal the discharge port 344 when the internal pressure of the pump chamber 30 becomes low, thereby preventing the liquid from flowing from the pump chamber 30 to the nozzle internal flow path 41.

[0031] In the dispenser 1, the liquid inflow path 231, the suction port 232, the suction path 341, the discharge path 342, the discharge port 344 and the nozzle internal flow path 41 [nozzle part 4] are arranged in series so that the centers of the liquid inflow path 231 are located on the same straight line. In the present embodiment, the straight line is set to the center line Y1 of the nozzle orthogonal to the discharge operation direction Xb of the cover body 31. That is, Figure 1 As shown, the suction path 341 and the discharge path 342 are arranged to face each other with the pump chamber 30 interposed therebetween.

[0032] The cover body 31 is mounted on the housing 32 in such a manner as to cover the opening 33 of the housing 32. The cover body 31 is formed of a material that can be elastically deformed. The cover body 31 is formed in a truncated cone shape in which the top surface 31a located on the opposite side of the end surface 32b is substantially flat, and has the top surface 31a as a flat surface at the top. The top surface 31a and the end surface 32b of the cover body 31 form planes parallel to each other. Before the ejection operation (before deformation), the cover body 31 bulges outward from the housing 32 in the direction indicated by the arrow Xa (hereinafter referred to as the "return direction Xa"). The cover body 31 is deformed by, for example, a human finger 170 (see FIG. 1 ). Figure 4 ) is pressed toward the pump chamber 30 to deform it, so that the liquid G in the pump chamber 30 is discharged from the discharge port 46. Hereinafter, the direction indicated by the arrow Xb pressed during the discharge operation is referred to as the "discharge operation direction Xb". In addition, if the discharge operation is released, the cover body 31 returns to the return direction Xa, and the liquid G1 is sucked from the liquid storage container 100 into the pump chamber 30.

[0033] like Figure 3 As shown in FIG. 1 , an annular flange portion 31c is formed on the opening side 31b of the cover body 31 located on the opposite side from the top surface 31a, and protrudes in the diameter direction Y. The flange portion 31c is inserted from the opening portion 33 side into a circular mounting groove 345 formed on the end surface 32a of the housing 32 in a concentric circle with the opening portion 33. Figure 5As shown in FIG. 3 , a rim portion 36 is formed that can be inserted into a slit portion 346 formed in a bottom portion 345c of the mounting groove 345. The flange portion 31c and the mounting groove 345 are formed in such a way that the rim portion 36 is inserted into the slit portion 346 when the flange portion 31c is mounted in the mounting groove 345. Figure 1 As shown, the dispenser 1 is in an engaged state by inserting the edge portion 36 into the slit portion 346 , thereby preventing the cover body 31 from rotating in the circumferential direction.

[0034] Between the annular outer inner wall 345a of the mounting groove 345 and the outer surface 31d of the cover body 31 opposite to the outer inner wall 345a when mounted in the mounting groove 345, as shown in FIG. Figure 1 , Figure 3 As shown in FIG. 1 , the annular stopper member 37 is installed in an embedded state. By installing the stopper member 37 in the installation groove 345, Figure 1 As shown, the flange 31c of the cover 31 is pressed against the outer inner wall 345a, the inner inner wall 345b and the bottom 345c of the mounting groove 345. Therefore, the cover 31 is mounted on the housing 32 so as not to fall off from the annular mounting groove 345 even when pressed in the ejection operation direction Xb.

[0035] Distributor 1 Figure 1 , Figure 3 As shown in FIG. 1 , a coil spring 7 is provided in the pump section 3 (pump chamber 30) for pressing (applying force) the cover 31 toward the outside of the housing 32, i.e., in the return direction Xa. The coil spring 7 is a compression coil spring. Figure 1 As shown in FIG. 1 , one end 7a is placed on the bottom surface 32e of the housing 32, and the other end 7b is engaged with the spring seat 38 formed on the inner surface 31e of the cover 31. The spring seat 38 has an annular rib 38a protruding from the inner surface 31e of the cover 31 toward the pump chamber 30. That is, the bottom surface 32e abutted by the coil spring 7 and the end surface 32b that serves as the pressing support portion are in a relative positional relationship. Therefore, when the top 31a and the end surface 32b of the cover 31 are pinched with the fingers 170 from the side of the housing 32 to perform the ejection operation, the force of the fingers is surely transmitted to the coil spring 7.

[0036] like Figure 1As shown, the dispenser 1 is provided with a length L from the cover 31 to the end face 32b that becomes the pressing support portion. That is, when the imaginary plane Y2 that passes through the center line Y1 of the nozzle that is orthogonal to the ejection operation direction Xb and is perpendicular to the ejection operation direction Xb is used as a reference, the length from the imaginary plane Y2 to the top face 31a that becomes the top of the cover 31 before deformation is set to L1, and when the distance from the imaginary plane Y2 to the end face 32b is set to L2, the distance L from the top face 31a to the end face 32b is L1+L2. The distance L is the distance between the top 31a and the end face 32b of the cover 31 that can be easily pinched with two or three fingers 170 of one hand. The distance L1 of the dispenser 1 is set to be longer than the distance L2. This is to ensure that the cover 31 fully enters the pump chamber 30 and deforms when the ejection operation is performed on the cover 31. In addition, from the viewpoint of more stable dispensing operation, the distance L1 is preferably not too large relative to the distance L2. For example, the distance L1 is preferably 3 times or less of the distance L2, and more preferably 2.5 times or less of the distance L2. The material used for the housing 32 is made of a material with higher rigidity than the material used for the cover 31 so that the housing 32 does not bend before the cover 31 when the dispensing operation is performed on the cover 31. Furthermore, Figure 1 In the figure, the angle of the imaginary plane Y2 is exaggerated for the sake of visibility.

[0037] As described above, the dispenser 1 of this embodiment can be operated by pinching the top surface 31a and the end surface 32b of the cover 31 with fingers. Figure 4 As shown, when installed in the liquid storage container 100, as shown in Figure 5 As shown, for example, the tip of the thumb 171 is placed on the top surface 31a of the cover body 31, and the tip of the index finger 172 or the middle finger is placed on the end surface 32b of the shell 32, and the pump part 3 is pinched and held from the axial direction X which becomes the lateral side. From this state, the user presses the cover body 31 in the dispensing operation direction Xb against the rebound force of the coil spring 7 and presses it in. In this way, since the rigidity of the shell 32 is higher than that of the cover body 31, the cover body 31 begins to deform partially toward the inside of the pump chamber 30 by applying a pressing force to the top surface 31a of the cover body 31. Therefore, the user can firmly hold the top surface 31a and the end surface 32b with his fingers in the initial stage of the dispensing operation.

[0038] If the cover 31 is further pressed in the ejection operation direction Xb in the holding state, Figure 6 As shown, the cover 31 is greatly bent into the pump chamber 30. As a result, the volume of the pump chamber 30 is reduced and the pressure in the chamber is increased, the suction valve 5 is used to prevent the liquid from flowing in from the suction port 232, and the discharge valve 6 is opened to open the discharge port 344, so that the liquid G in the pump chamber 30 is quantitatively discharged from the discharge port 46 through the nozzle internal flow path 41.

[0039] On the other hand, if the user releases the finger 170 from the top surface 31a and the end surface 32b of the cover body 31 to release the discharging operation, the cover body 31 moves toward the return direction Xa by the rebound force of the coil spring 7, changes and tries to return to the original shape before the deformation. Therefore, the internal pressure of the pump unit 3 becomes low, so the discharge valve 6 closes the valve to close the discharge port 344, and the suction valve 5 opens the valve to open the suction port 232, so that a fixed amount of liquid G1 in the liquid storage container 100 is sucked into the pump unit 3 through the suction port 232 and the suction path 341.

[0040] Thus, according to the dispenser 1, a pressing support portion disposed opposite to the cover body 31 can be provided, and the top (top surface 31a) of the cover body 31 and the end surface 32b of the pressing support portion can be pinched with the fingers 170 from the side of the housing 32 to perform the dispensing operation. Therefore, the finger 170 is not easily displaced during the dispensing operation, and the dispensing operation of pressing the cover body 31 into the pump chamber 30 can be easily and stably performed. In the dispenser 1, two fingers of one hand can be moved from a direction intersecting with the axial direction X to face the top (top surface 31a) of the cover body 31 and the end surface 32b of the pressing support portion. The direction in which pressure is applied to the top (top surface 31a) of the cover body 31 and the end surface 32b of the pressing support portion by pinching with the two fingers is the direction along the above-mentioned axial direction X.

[0041] When pinching the outer shell 32 with fingers from the side, it is preferred that when the dispenser 1 is installed in the liquid storage container 100 in an upright or inverted state, the top of the cover body 31 (top surface 31a) and the end surface 32b serving as the pressing support portion are arranged in a manner opposite to each other in the horizontal direction.

[0042] In addition, taking the center line Y1 extending in the direction perpendicular to the discharge operation direction Xb of the cover body 31, that is, the diameter direction Y and passing through the pump chamber 30 as a reference, and setting the length from the center line Y1 to the top surface 31a of the cover body 31 as L1, and setting the distance from the center line Y1 to the end surface 32b which becomes the pressing support portion as L2, L1>L2, thereby providing a dispenser which can easily ensure the stroke amount (deformation amount) of the cover body 31 into the pump chamber 30, can discharge liquid at a target discharge amount, and can perform a good discharge operation.

[0043] The dispenser 1 is a small dispenser in which the amount of liquid discharged in one dispensing operation is assumed to be about several milliliters. If the specific dimensions are expressed as an example, the diameter R of the cover 31 is 23.27 mm, L1 is 14.85 mm, and L2 is 7.85 mm. The diameter R of the cover 31 is the distance between the outer surfaces 31d of the opposite parts of the cover 31 when it is installed on the shell 32. As materials for the cover 31, for example, elastomers, silicone resins, and NBR (Nitrile Butadiene Rubber) can be listed. As materials for the shell 32, resin materials such as PP (polypropylene) and PE (polyethylene) can be listed. According to the structure of the dispenser 1 of this size and material, when the cover 31 is clamped with fingers and pressed in the dispensing operation direction Xb, the fingers will not be displaced, and the dispensing operation of the cover 31 can be performed well.

[0044] From the perspective of the pinchability of the top surface 31a of the cover body 31 and the pressing support part 32b, the distance L is preferably greater than 5 mm, more preferably greater than 10 mm, and further preferably less than 40 mm, more preferably less than 30 mm. Furthermore, it is preferably greater than 5 mm and less than 40 mm, more preferably greater than 10 mm and less than 30 mm.

[0045] [Second embodiment]

[0046] use Figure 7 to Figure 11 Hereinafter, the same reference numerals are given to the same functions or components as those of the first embodiment, and the description of such components is appropriately omitted or simplified.

[0047] like Figure 7 , Figure 8 , Fig. 9 As shown, the dispenser 1A of the second embodiment includes a cover 2, a pump 3A, and a nozzle 4. Regarding these components, in the dispenser 1A, the cover 2 and the nozzle 4 are arranged in a direction orthogonal to the pump 3A and are mounted on a housing 32A constituting the pump 3A. Fig. 9 As shown, the cylindrical portion 21 of the cap 2 is rotated relative to a mouth and neck portion 101 formed on the upper portion of the upright liquid storage container 100A and screwed into the mouth and neck portion 101, and is mounted on the upper portion of the liquid storage container 100A for use.

[0048] like Figure 7 As shown, the dispenser 1A is provided with a cover 31 so as to cover an opening 33 formed on the upper portion of the housing 32A. The pump unit 3A forms a space surrounded by the cover 31 and the housing 32A as a pump chamber 30A. The dispenser 1A is pressed by pinching the end surface 32Ab of the cover 31 and the housing 32A with fingers 170 (see Fig. 9) and the cover 31 is pressed in the ejection operation direction Xb from the left to the right in the figure, so that a fixed amount of liquid in the pump chamber 30A is ejected from the nozzle portion 4 (refer to Figure 8 ) to spit out. The dispenser 1A releases the spitting operation by releasing the pinched fingers 170, and Fig. 9 Here, the operation of the user pinching the cover 31 and the end surface 32Ab of the pump unit 3A with the fingers 170 and pushing the cover 31 to the left is regarded as the dispensing operation.

[0049] The difference between the pump unit 3 and the pump unit 3A lies in the shape of the housing 32A. Figure 7 As shown in FIG. 1 , a suction path 341 is formed at the lower portion of the cylindrical housing 32A with the end surface 341a facing downward. Figure 8 As shown in FIG. 1 , the housing 32A is formed in such a way that the discharge path 342 extends in the discharge direction Z orthogonal to the discharge operation direction X. That is, the housing 32A has an L-shaped cross section. The cover 2 is integrated with the pump part 3A by inserting the suction path 341 into the cylindrical part 22. Fig. 9 As shown, a liquid-lifting tube 180 is connected and inserted into the liquid storage container 100A, and when the dispenser 1A is installed in the liquid storage container 100A, the liquid in the container can be sucked from the bottom of the container.

[0050] like Figure 7 As shown, the suction port 232 formed in the wall portion 22a at the boundary between the cylindrical portion 22 and the cylindrical portion 23 is connected to the liquid inflow path 231 and the suction path 341 extending in the diameter direction Y, and is opened and closed by the suction valve 5 arranged between the cylindrical portion 22 and the suction path 341. The discharge path 342 extending in the discharge direction Z is formed in a manner connected to the nozzle internal flow path 41 of the nozzle portion 4 mounted on the nozzle mounting portion 343 via the discharge port 344. The discharge valve 6 for opening and closing the discharge port 344 is arranged between the discharge path 342 and the nozzle portion 4.

[0051] The distributor 1A is configured in such a manner that the centers of the liquid inflow path 231, the suction port 232, the suction valve 5, and the suction path 341 are located on the center line Y3 extending along the diameter direction Y and passing through the pump chamber 30A. The distributor 1A is configured in such a manner that the centers of the discharge path 342, the discharge valve 6, and the flow path 41 in the nozzle are located on the center line Z1 of the nozzle extending along the discharge direction Z. The end face 32Ab is formed as a flat surface. In addition, the center line Y3 and the center line Z1 are orthogonal to the end face 32Ab constituting the pressing support portion, and the end face 32Ab is arranged opposite to the cover body 31 and can be pinched by the fingers 170 from the side of the housing 32A together with the cover body 31 to perform the discharge operation. The center line Y3 and the center line Z1 pass through the pump chamber 30A and are at the same distance from the end face 32Ab.

[0052] The cover 31 is formed of an elastically deformable material similarly to the first embodiment, and bulges from the housing 32A in the return direction Xa before the ejection operation (before deformation). Fig.10 , Fig.11 As shown in FIG. 1 , the discharge operation is performed by pressing the cover body 31 with the finger 170 toward the discharge operation direction Xb to deform the cover body 31, so that the liquid in the pump chamber 30A is discharged from the discharge port 46 of the nozzle part 4 to the outside. When the cover body 31 is released by releasing the finger 170 and releasing the discharge operation, as shown in FIG. Fig. 9 , Fig.11 As shown, the liquid G1 is sucked from the liquid storage container 100A and flows into the pump chamber 30A.

[0053] The flange portion 31c formed on the opening side 31b of the cover body 31 is inserted from the opening portion 33 side into a circular mounting groove 345 formed in the housing 32A concentrically with the opening portion 33. The cover body 31 is fixed to the housing 32A without falling off from the annular mounting groove 345 even when the cover body 31 is pressed in the ejection operation direction Xb by mounting the annular stopper member 37 in the mounting groove 345 with the flange portion 31c inserted in the mounting groove 345.

[0054] In the flange portion 31c and the mounting groove 345, as in the first embodiment, Figure 7 As shown, the edge portion 36 and the slit portion 346 are respectively formed. When the flange portion 31c is installed in the installation groove 345, the edge portion 36 is inserted into the slit portion 346, thereby preventing the cover body 31 from rotating in the circumferential direction.

[0055] The dispenser 1A includes a coil spring 7 in the pump section 3A (pump chamber 30A) for biasing the cover 31 toward the outside of the housing 32A, i.e., in the return direction Xa. The coil spring 7 has one end 7a disposed on the bottom surface 32Ae of the housing 32A, and the other end 7b engaged with a spring seat 38 formed on the inner surface 31e of the cover 31.

[0056] In the dispenser 1A, a length La from the cover 31 to the end surface 32Ab that becomes the pressing support portion is also specified. That is, when the imaginary plane Z2 that passes through the center line Z1 of the nozzle that is orthogonal to the ejection operation direction Xb and is perpendicular to the ejection operation direction Xb is used as a reference, the length from the imaginary plane Z2 to the top surface 31a that becomes the top of the cover 31 before deformation is set to L1, and when the distance from the imaginary plane Z2 to the end surface 32Ab is set to L2, the distance La from the top surface 31a to the end surface 32Ab is L1+L2. The distance La is the distance between the top surface 31a and the end surface 32Ab of the cover 31 that can be pinched with two or three fingers 170 of one hand. The distance L1 of the dispenser 1A is set to be longer than the distance L2. This is to ensure that the cover 31 fully enters the pump chamber 30A and deforms when the ejection operation is performed on the cover 31. The material used for the outer shell 32A is a material having higher rigidity than that used for the cover 31, so that when the cover 31 is ejected, the outer shell 32A does not bend before the cover 31. Figure 7 In FIG. 1 , the angle of the imaginary plane Z2 is exaggerated for the sake of visibility.

[0057] In the distributor 1A of this embodiment, as Fig. 9 As shown, after being installed in the liquid storage container 100A, as shown in Fig.10 As shown, the tip of the thumb 171 is placed on the top surface 31a of the cover body 31, and the tip of the index finger 172 or the middle finger is placed on the end surface 32Ab of the shell 32A, and the pump part 3A is pinched and held from the axial direction X. From this state, the user presses the cover body 31 in the direction Xb of the dispensing operation against the rebound force of the coil spring 7 and presses it in. In this way, since the rigidity of the shell 32A is stronger than that of the cover body 31, the cover body 31 begins to deform partially toward the inside of the pump chamber 30A by applying a pressing force to the top surface 31a. Therefore, the user can firmly hold the top surface 31a and the end surface 32Ab with his fingers in the initial stage of the dispensing operation.

[0058] If the cover 31 is further pressed in the discharge operation direction Xb in the holding state, the cover 31 is greatly bent into the pump chamber 30A. As a result, the volume of the pump chamber 30A is reduced and the pressure in the chamber is increased, the suction valve 5 is used to prevent the liquid from flowing in from the suction port 232, and the discharge valve 6 is opened to open the discharge port 344, so that the liquid G in the pump chamber 30A is discharged quantitatively from the discharge port 46 through the nozzle internal flow path 41.

[0059] On the other hand, if the user releases his finger from the cover 31 and the end surface 32b to cancel the discharge operation, the cover 31 moves in the return direction Xa due to the rebound force of the coil spring 7, changes and tries to return to the original shape before the deformation. Therefore, the internal pressure of the pump part 3A decreases, so the discharge valve 6 closes and the discharge port 344 is blocked, and as Fig.11As shown, the suction valve 5 is opened to open the suction port 232 , and a fixed amount of liquid G1 in the liquid storage container 100A is sucked into the pump unit 3A through the suction port 232 and the suction path 341 .

[0060] Thus, according to the dispenser 1A, the end surface 32Ab serving as the pressing support portion is disposed opposite to the cover body 31 and can be pinched by fingers from the side of the housing 32A together with the cover body 31 to perform the dispensing operation, so that the cover body 31 and the end surface 32Ab can be pinched together with the fingers 170 from the side of the housing 32A (the axial direction X intersecting the diameter direction Y on the same plane) to perform the dispensing operation. Therefore, the finger 170 does not shift during the dispensing operation, so that the dispensing operation of the cover body 31 deforming into the pump chamber 30A is stable and a good dispensing operation can be provided.

[0061] Taking the imaginary plane Z2 passing through the center line Z1 of the nozzle which is perpendicular to the discharge operation direction Xb of the cover body 31 as a reference, and setting the length from the imaginary plane Z2 to the top surface 31a of the cover body 31 as L1, and setting the distance from the imaginary plane Z2 to the end surface 32Ab which becomes the pressing support part as L2, L1>L2, thereby providing a dispenser 1A which can easily ensure the stroke amount (deformation amount) of the cover body 31 into the pump chamber 30A, can discharge liquid at a target discharge amount, and can perform a good discharge operation.

[0062] In dispenser 1A, the diameter R, distance L1, and distance L2 of the cover body 31 are set in the same manner as in dispenser 1, and the material used for the cover body 31 is also the same. When the cover body 31 is pinched with fingers and pressed in the ejection operation direction Xb, the fingers will not be displaced, and the ejection operation of the cover body 31 can be performed well.

[0063] The dispenser 1A is a small dispenser in which the amount of liquid discharged in one dispensing operation is assumed to be about several milliliters. As an example, the specific dimensions are shown, and the diameter R of the cover 31 is 23.27 mm, L1 is 14.85 mm, and L2 is 7.85 mm. The diameter R of the cover 31 is the distance between the outer surfaces 31d of the opposite parts of the cover 31 when it is installed in the housing 32A.

[0064] According to the configuration of the dispenser 1A having the cover 31 of such size and material, when the cover 31 is pinched with fingers and pressed in the dispensing operation direction Xb, the fingers are not misaligned, and the dispensing operation of the cover 31 can be performed satisfactorily.

[0065] Although preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described specific embodiments, and various modifications and changes can be made within the scope of the gist of the present invention described in the claims unless otherwise specified in the above description.

[0066] In the distributor 1, 1A, the end faces 32b and 32Ab of the shell located on the opposite side of the cover body 31 are made flat and serve as a pressing support portion, but can also be roughly flat. That is, as long as the radius of curvature is greater than the discharge port 344, it can also have a curved surface. In addition, in the distributor 1, 1A, a concave-convex portion extending along the diameter direction Y can also be formed on the end faces 32b and 32Ab as a pressing support portion. Alternatively, the end faces 32b and 32Ab can also be formed as a curved surface recessed toward the pump chamber 30, 30A as a pressing support portion. If the pressing support portion is formed in the form of such a concave-convex portion or a curved surface, it is not easy to slip when pinched with the fingers 170 and can be firmly held, so it is preferred.

[0067] Regarding the above-mentioned embodiment, the present invention further discloses the following dispenser.

[0068] <1>

[0069] A dispenser, wherein a pump chamber is formed by a main body having a recess and a cover body covering an opening of the main body, and a liquid in the pump chamber is ejected from a nozzle portion by performing a discharging operation of pressing the cover body toward the pump chamber to deform it, and the liquid flows into the pump chamber by releasing the discharging operation.

[0070] The dispenser includes a pressing support portion disposed opposite to the cover body, and the dispensing operation is performed by pinching the top of the cover body and the pressing support portion with fingers from the side of the main body.

[0071] <2>

[0072] The dispenser according to the above-mentioned <1>, wherein a distance from the press support portion to the top of the cover is not less than 5 mm and less than 30 mm.

[0073] <3>

[0074] In the dispenser as described above in <1>, an imaginary plane passing through the center line of the nozzle portion and perpendicular to the pressing direction of the cover body during the discharging operation, i.e., the discharging operation direction, is used as a reference, and the distance from the imaginary plane to the top of the cover body is set to L1, and the distance from the imaginary plane to the pressing support portion is set to L2, then L1>L2.

[0075] <4>

[0076] The dispenser according to any one of <1> to <3>, wherein the cover is provided in a bulging manner on the side opposite to the main body and has a substantially flat top surface.

[0077] <5>

[0078] The dispenser according to any one of <1> to <4>, wherein the pressing support portion is a substantially flat surface.

[0079] <6>

[0080] The dispenser according to any one of <1> to <4> is arranged so that the top surface of the cover body and the end surface serving as the pressing support portion face each other in the horizontal direction.

[0081] <7>

[0082] The dispenser according to any one of <1> to <6>, wherein a coil spring for biasing the cover toward the outside is provided in the pump chamber.

[0083] <8>

[0084] As in the dispenser of <7>, one end side of the coil spring is placed on the bottom surface of the recessed portion, and the other end side abuts against the inner surface 31e of the cover body.

[0085] <9>

[0086] In the dispenser according to the above-mentioned <8>, the bottom surface with which the coil spring abuts is located opposite to the pressing support portion.

[0087] <10>

[0088] A dispenser as described in any one of <1> to <9> above, wherein the main body has an intake path as a flow path for liquid flowing into the pump chamber, and an exhaust path as a flow path for liquid discharged from the nozzle portion, and the intake path and the exhaust path are respectively connected to the pump chamber.

[0089] <11>

[0090] The dispenser according to the above-mentioned <10>, wherein the intake path and the discharge path are arranged in series so that the centers thereof are located on the same straight line.

[0091] <12>

[0092] In the dispenser according to the above-mentioned item <10>, the suction path and the discharge path are arranged to face each other with the pump chamber interposed therebetween.

[0093] [Industrial Applicability]

[0094] According to the dispenser of the present invention, the finger is less likely to be misaligned during the dispensing operation, and the dispensing operation of pressing the cover into the pump chamber can be performed easily and stably.

Claims

1. A dispenser, wherein a pump chamber is formed by a main body having a recessed portion and a cover body covering an opening of the main body, wherein a discharge operation is performed by pressing the cover body toward the pump chamber to deform the cover body so that liquid in the pump chamber is discharged from a nozzle portion, and liquid flows into the pump chamber by releasing the discharge operation, The dispenser includes a pressing support portion disposed opposite to the cover body, and the top of the cover body and the pressing support portion are pinched with fingers from the side of the body, and the top of the cover body is pressed into the pump chamber through the opening of the body to perform a dispensing operation. The top of the cover and the end surface of the pressing support portion are formed as flat surfaces parallel to each other. Taking an imaginary plane passing through the center line of the nozzle portion and perpendicular to the ejection operation direction, which is the pressing direction of the cover body during the ejection operation, as a reference, and assuming the distance from the imaginary plane to the top of the cover body as L1, and the distance from the imaginary plane to the pressing support portion as L2, L1>L2, The main body has a suction path as a flow path for liquid to flow into the pump chamber. The suction path extends in a direction perpendicular to the discharge operation direction and opens in the pump chamber. The cover body is deformable so that at least a portion of the cover body overlaps a portion of the opening of the suction path in the pump chamber inside the recessed portion when the opening of the suction path is viewed along an extending direction of the suction path.

2. The dispenser of claim 1, wherein: A distance from the pressing support portion to the top of the cover body is greater than or equal to 5 mm and less than 30 mm.

3. The dispenser according to claim 1 or 2, wherein: The cover is bulgingly disposed on the side opposite to the main body.

4. The dispenser according to claim 1 or 2, wherein: The dispenser is arranged so that the top surface of the cover body and the end surface serving as the pressing support portion face each other in the horizontal direction.

5. The dispenser according to claim 1 or 2, wherein: A coil spring for biasing the cover body outward is provided in the pump chamber.

6. The dispenser of claim 5, wherein: One end side of the coil spring is placed on the bottom surface of the recessed portion, and the other end side abuts against the inner surface of the cover body.

7. The dispenser of claim 6, wherein: The bottom surface on which the coil spring abuts is located opposite to the pressing support portion.

8. The dispenser according to claim 1 or 2, wherein: The main body further includes a discharge path as a flow path of the liquid discharged from the nozzle portion, and the suction path and the discharge path are communicated with the pump chamber, respectively.

9. The dispenser of claim 8, wherein: The suction path and the discharge path are arranged in series so that the centers of the two paths are located on the same straight line.

10. The dispenser of claim 8, wherein: The suction path and the discharge path are arranged to face each other with the pump chamber interposed therebetween.

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