Ejector

Abstract

An ejector (1) is provided with: a first cylinder (24); a first piston (3) that slides on the first cylinder (24); a second cylinder (4) attached to the mouth (20a) of the container body (20); a second piston (25) that slides on the second cylinder (4); a holding member (16) that advances and retreats with respect to the second cylinder (4) in conjunction with the first cylinder (24) and the second piston (25) by means of an external operation, and that advances and retreats with respect to the first cylinder (24) in conjunction with the first piston (3) during the advancing and retreating operation thereof; an internal flow path (18) for discharging the contents in the container body (20) via a pump chamber (18a) demarcated by the first cylinder (24), the first piston (3), the second cylinder (4), and the second piston (25) in response to the forward and backward movement of the holding member (16); a pressure accumulation unit (17) that closes the internal flow path (18) by causing a seating part (3a) of the first piston (3) to seat in the forward direction with respect to a seated part (6a) of the holding member (16) by means of a biasing force from the first biasing member (13); and a second biasing member (14) that biases the holding member (16) in the backward direction with respect to the second cylinder (4).

Description

Technical Field

[0001] This invention relates to an exhaust device. Background Technology

[0002] A discharge device is known to include: a cylinder; a piston that can slide on the cylinder; a retaining member that moves forward and backward relative to the cylinder by an external operation; an internal flow path that discharges the contents of a container body through a pump chamber divided by the cylinder and the piston according to the forward and backward movement of the retaining member; and a accumulator that closes the internal flow path by using a force from a force-applying member to cause the seated portion of the piston to be seated in the forward direction relative to the seated portion of the retaining member (see, for example, Patent Document 1).

[0003] Existing technical documents Patent documents Patent Document 1: Japanese Patent Application Publication No. 2002-35654 Summary of the Invention

[0004] Technical issues If conventional accumulator-type dischargers like those described above are designed to achieve a large discharge (spray) volume, problems such as longer cylinder stroke and heavier operation of holding components will arise.

[0005] Therefore, the object of the present invention is to provide a accumulator-type discharge device that is easy to implement with a large discharge capacity.

[0006] Technical solution The discharge device of the present invention comprises: a first cylinder; a first piston that slides on the first cylinder; a second cylinder mounted on the opening of a container body; a second piston that slides on the second cylinder; a retaining member that moves forward and backward relative to the second cylinder along with the first cylinder and the second piston by an external operation, and moves forward and backward along with the first piston relative to the first cylinder during its forward and backward movement; an internal flow path that, in response to the forward and backward movement of the retaining member, discharges the contents of the container body through a pump chamber divided by the first cylinder, the first piston, the second cylinder, and the second piston; a pressure accumulator that closes the internal flow path by using a force from a first force-applying member to cause the seated portion of the first piston to be seated in a forward direction relative to the seated portion of the retaining member; and a second force-applying member that applies a force to the retaining member in a backward direction relative to the second cylinder.

[0007] The discharge device of the present invention is preferably a discharge device with the following structure in the above-described structure, wherein the retaining member has: a cylindrical valve stem extending in the forward and backward direction; a piston guide mounted on the inner circumferential surface of the valve stem and having the seated portion; and a connecting portion integrally connected to the valve stem at a position radially outward from the valve stem and being forceped in the backward direction by the second force-applying member.

[0008] The discharge device of the present invention is preferably a discharge device with the following structure, wherein the first force-applying component is composed of a compression spring, and the compression spring is compressed by the connecting part and the first piston in the forward and backward direction.

[0009] The discharge device of the present invention is preferably a discharge device in the above structure, wherein the connecting part presses the first cylinder body in the forward direction at the forward limit position relative to the first cylinder body.

[0010] The discharge device of the present invention is preferably a discharge device in the above structure, wherein the second force-applying member applies force to the first cylinder in the retracting direction by means of the engaging portion between the connecting portion and the first cylinder.

[0011] The discharge device of the present invention is preferably a discharge device with the following structure, wherein the discharge port of the internal flow path discharges the contents in a mist-like manner.

[0012] Technical effect According to the present invention, a accumulator-type discharge device that can easily achieve a large discharge capacity can be provided. Attached Figure Description

[0013] Figure 1 This is a longitudinal cross-sectional view of the discharge container having an embodiment of the discharger of the present invention, shown in its pre-operational state.

[0014] Figure 2 This indicates the start of the pressing operation. Figure 1 The diagram shows a longitudinal cross-sectional view of the state when the nozzle of the discharge container is in operation.

[0015] Figure 3 It shows from Figure 2 The diagram shown is a longitudinal cross-sectional view of the state when the nozzle head is further pressed.

[0016] Figure 4 It shows from Figure 3 The diagram shown is a longitudinal cross-sectional view of the state when the nozzle head is further pressed.

[0017] Symbol Explanation 1: Discharge device 2: First cylinder block - second piston assembly 3: First Piston 3a: Seating area 3b: First sliding cylinder 3c: First cylindrical shaft 4: Second cylinder block 4a: Inlet 4b: Second cylinder block body 4c: Flange 4d: Bottom of the second cylinder block 4e: Bottom wall 4f: Bottom cylinder section 4g: Valve seat section 4h: Valve limiting section 4i: Longitudinal rib 5: Valve stem assembly 5a: Valve stem 5b: Connecting Unit 5c: Card-connected 5d: Connecting wall 5e: Upper receiving part 6: Piston guide 6a: The part where the person is seated 6b: Expanded diameter section 7: Head Body 8: Nozzle plate 9: Anti-detachment components 9a: Anti-hair loss section 9b: Protrusion 9c: Lower receiving part 10: Install the cover 10a: Zhoubi 10b: Upper part of the lid 10c: Lower annular wall 10d: Outer wall of the cylinder 10e: Upper annular wall 10f: Inner cylinder wall 11: pipe 12: Valve body 13: First force-applying component 14: Second force-applying component 15: Nozzle head 15a: Operated Unit 16: Retaining components 17: Accumulator 18: Internal flow path 18a: Pump room 18b: Upstream side flow path 18c: Downstream side flow path 18d: Discharge outlet 19: Discharge from container 20: Container body 20a: Mouth 20b: Main Cadre 21: Top Cover 21a: Peripheral wall 21b: Top wall 22: Padding 23: Suction valve 24: First cylinder block 24a: First cylinder block body 24b: Restricted step section 25: Second Piston 25a: Second sliding cylinder 25b: Second cylinder shaft 26: Card-connecting section G: Gap O: Central axis Detailed Implementation

[0018] Hereinafter, embodiments of the present invention will be described by way of example with reference to the accompanying drawings.

[0019] like Figure 1 As shown, in one embodiment of the present invention, the discharge device 1 includes: a first cylinder-second piston component 2, a first piston 3, a second cylinder 4, a valve stem component 5, a piston guide 6, a head body 7, a nozzle plate 8, an anti-detachment component 9, a mounting cap 10, and a tube 11, all integrally formed, for example, of resin; and a valve body 12, a first force-applying component 13, and a second force-applying component 14, all integrally formed, for example, of metal. The head body 7 and the nozzle plate 8 constitute a nozzle head 15, and the nozzle head 15, the valve stem component 5, and the piston guide 6 constitute a retaining component 16. The seated portion 3a of the first piston 3, the seated portion 6a of the piston guide 6, and the first force-applying component 13 constitute a pressure accumulator 17. It should be noted that the valve body 12, the first force-applying component 13, and the second force-applying component 14 are not limited to metal and may also be made of, for example, resin.

[0020] The discharger 1 has an internal flow path 18, which has a pump chamber 18a, an upstream flow path 18b and a downstream flow path 18c, and the downstream flow path 18c has a discharge outlet 18d.

[0021] In this embodiment, the discharge container 19 has a discharge device 1, a container body 20, and a top cover 21.

[0022] The container body 20 has a cylindrical opening 20a centered on the central axis O of the first cylinder 24 (described later), a main body 20b connected to the lower end of the opening 20a, and a bottom connected to the lower end of the main body 20b. It should be noted that the opening 20a may also be a cylindrical structure other than a cylindrical shape, such as a square tube. Liquid contents are contained within the container body 20.

[0023] In this embodiment, the direction along the central axis O can be called the forward / backward direction or the up / down direction; the direction along the forward / backward direction from the opening 20a toward the bottom can be called the forward direction or downward; the opposite direction can be called the backward direction or upward; the direction along the straight line orthogonal to the central axis O can be called the radial direction; the direction around the central axis O can be called the circumferential direction; and the cross section containing the central axis O can be called the longitudinal cross section.

[0024] The diameter of the second cylinder 4 is larger than that of the first cylinder 24, and it has an intake port 4a. The second cylinder 4 is mounted on the intake port 20a by mounting the mounting cap 10 to the intake port 20a. In addition, the second cylinder 4 has: a second cylinder body 4b, which is cylindrical about the central axis O and is connected to the second piston 25; a flange 4c, which extends radially outward from the upper part of the second cylinder body 4b and is disposed on the upper end surface of the intake port 20a through a gasket 22; and a second cylinder bottom 4d, which extends radially inward from the lower part of the second cylinder body 4b and has an intake port 4a.

[0025] The bottom 4d of the second cylinder body has: a bottom wall 4e that extends radially inward from the lower part of the second cylinder body 4b and is annular about the central axis O; a bottom cylinder 4f that extends upward from the inner periphery of the bottom wall 4e and is cylindrical about the central axis O; a valve seat 4g that extends radially inward from the upper end of the bottom cylinder 4f and has an intake port 4a on the central axis O for the valve body 12 to sit on; a valve limiting part 4h that extends upward from the outer periphery of the valve seat 4g and limits the upward movement of the valve body 12 away from the valve seat 4g; and a plurality of longitudinal ribs 4i that are arranged at intervals in the circumferential direction and extend radially and vertically across the portion of the upper surface of the bottom wall 4e excluding the periphery and the outer periphery of the bottom cylinder 4f.

[0026] The upper end of the tube 11 is fitted onto the inner circumferential surface of the bottom cylinder 4f.

[0027] The suction valve 23 comprises a valve body 12, a valve seat 4g, and a valve limiting part 4h. With respect to the suction valve 23, the upward movement of the valve body 12 from the valve seat 4g allows the contents to move from the container body 20 into the pump chamber 18a; conversely, the downward movement of the valve body 12 onto the valve seat 4g inhibits the contents from moving in the opposite direction. It should be noted that the suction valve 23 is not limited to a structure having a valve body 12, a valve seat 4g, and a valve limiting part 4h; for example, it may be constructed as a flexible valve such as a three-piece valve.

[0028] The mounting cover 10 has: a peripheral wall 10a, which is mounted on the outer peripheral surface of the opening 20a; and an upper cover 10b, which extends radially inward from the upper part of the peripheral wall 10a and connects with the upper surface of the flange 4c, and is annular about the central axis O. The upper cover 10b has: a lower annular wall 10c, which extends radially inward from the upper end of the peripheral wall 10a and connects with the upper surface of the flange 4c; an outer cylindrical wall 10d, which extends upward from the inner peripheral edge of the lower annular wall 10c; an upper annular wall 10e, which extends radially inward from the upper end of the outer cylindrical wall 10d; and an inner cylindrical wall 10f, which extends upward and downward from the inner peripheral edge of the upper annular wall 10e.

[0029] The first cylinder-second piston assembly 2 is annular with the central axis O as its center, and the upper end portion forms the first cylinder 24, while the lower end portion forms the second piston 25.

[0030] The second piston 25 has a second sliding cylinder 25a and a second cylindrical shaft 25b. The second sliding cylinder 25a forms the outer peripheral edge of the second piston 25 and slides vertically on the inner peripheral surface of the second cylinder body 4b. The second cylindrical shaft 25b forms the radial inner peripheral edge of the second piston 25 and is cylindrical in shape extending vertically. The lower end of the second cylindrical shaft 25b is integrally connected to the second sliding cylinder 25a, and the upper end of the second cylindrical shaft 25b is integrally connected to the lower end of the first cylinder body 24.

[0031] The anti-detachment component 9 is annularly centered on the central axis O and integrally mounted on the second cylinder 4, preventing the second piston 25 from being pulled upward from the second cylinder 4. More specifically, the anti-detachment component 9 has: an anti-detachment portion 9a, which has an outer peripheral surface that contacts the inner peripheral surface of the second cylinder body 4b; and a protrusion 9b, which protrudes radially outward from the upper part of the anti-detachment portion 9a and has a lower surface opposite to the upper surface of the second cylinder 4. The upper surface of the anti-detachment portion 9a has a lower receiving portion 9c, which is annularly concave centered on the central axis O and receives the lower end of the second force-applying component 14.

[0032] The second piston 25 abuts upward against the anti-detachment portion 9a, thereby preventing the second piston 25 from being pulled upward from the second cylinder 4. The protrusion 9b abuts downward against the upper surface of the second cylinder 4, thereby preventing the anti-detachment component 9 from shifting downward relative to the second cylinder 4. The portion of the anti-detachment portion 9a that is further outward than the lower receiving portion 9c abuts upward against the lower end face of the inner wall 10f of the mounting cover 10, thereby preventing the anti-detachment component 9 from shifting upward relative to the second cylinder 4.

[0033] The second force-applying component 14 is arranged around the central axis O and consists of a compression spring that extends and retracts in the vertical direction.

[0034] The first cylinder body 24 is annular about the central axis O and has a first cylinder body 24a and a limiting step portion 24b. The first cylinder body 24a is cylindrical about the central axis O and is connected to the first piston 3. The limiting step portion 24b protrudes radially inward from the lower end of the first cylinder body 24a in a stepped manner.

[0035] The retaining member 16 moves forward and backward relative to the second cylinder 4 with the first piston 3 and the second piston 25 by operation from outside via the nozzle head 15, and during its forward and backward movement, the retaining member 16 moves forward and backward with the first piston 3 relative to the first cylinder 24.

[0036] Additionally, the retaining member 16 includes: a cylindrical valve stem 5a extending in the forward / reverse direction with the central axis O as its center; a piston guide 6 mounted on the inner circumferential surface of the valve stem 5a and having a seated portion 6a; and a connecting portion 5b integrally connected to the valve stem 5a at a position radially outward of the valve stem 5a, and subjected to a force in the backward direction by the second force-applying member 14. Furthermore, the valve stem member 5 is composed of the valve stem 5a and the connecting portion 5b.

[0037] The piston guide 6 is rod-shaped and extends in the forward and backward direction with the central axis O as the center. In addition, the piston guide 6 has an enlarged diameter portion 6b at a position lower than the valve stem 5a, and the enlarged diameter portion 6b has a seated portion 6a.

[0038] The first piston 3 is annular about the central axis O and has a first sliding cylinder 3b and a first cylindrical shaft 3c. The first sliding cylinder 3b forms the outer peripheral edge of the first piston 3 and slides along the reciprocating direction on the inner peripheral surface of the first cylinder body 24a. The first cylindrical shaft 3c forms the radial inner peripheral edge of the first piston 3 and is cylindrical in shape extending along the reciprocating direction. The lower end of the first cylindrical shaft 3c is integrally connected to the first sliding cylinder 3b. The first cylindrical shaft 3c surrounds the outer peripheral surface of the piston guide 6 and reciprocates relative to the piston guide 6. In addition, the first cylindrical shaft 3c slides along the reciprocating direction on the lower end of the outer peripheral surface of the valve stem 5a.

[0039] The first piston 3 has a sitting part 3a, which sits on the sitting part 6a in the forward direction and separates from the sitting part 6a in the backward direction according to the forward and backward movement of the holding member 16.

[0040] The connecting portion 5b of the retaining member 16 has: a cylindrical engaging wall 5c that extends radially outward from the valve stem 5a along the forward and backward direction with the central axis O as the center; a connecting wall 5d that connects the upper end of the engaging wall 5c to the outer peripheral surface of the valve stem 5a; and an upper receiving portion 5e that protrudes radially outward from the upper end of the outer peripheral surface of the engaging wall 5c in a stepped manner and receives the upper end of the second force-applying member 14.

[0041] The second force-applying component 14 applies force to the first cylinder 24 in a backward direction by means of the engagement portion 26 between the inner peripheral surface of the engaging wall 5c of the connecting portion 5b and the concave and convex portions of the outer peripheral surface of the first cylinder 24. A predetermined gap G is provided between the lower surface of the connecting wall 5d of the connecting portion 5b and the upper end surface of the first cylinder 24, so that the connecting wall 5d of the connecting portion 5b presses the first cylinder 24 in a forward direction at a position relative to the forward limit of the first cylinder 24 (see reference). Figure 4 ).

[0042] The first force-applying component 13 is composed of a compression spring that is compressed by the connecting wall 5d of the connecting part 5b and the first piston 3 in the forward and backward direction.

[0043] The head body 7 is mounted on the upper end of the valve stem 5a. A nozzle disc 8 is mounted in a fitting groove located on the side of the head body 7, forming a flow path between the nozzle disc 8 and the head body 7 for discharging the contents from the outlet 18d in a mist (i.e., spray). An actuated portion 15a is formed on the upper surface of the head body 7 to withstand external pressing operations. The nozzle head 15, in response to the pressing operation, moves forward and backward integrally with the retaining member 16 relative to the second cylinder 4 and the container body 20.

[0044] The internal flow path 18 includes a pump chamber 18a, an upstream flow path 18b (located upstream of the pump chamber 18a), and a downstream flow path 18c (located downstream of the pump chamber 18a). The pump chamber 18a is divided by a first cylinder 24, a first piston 3, a second cylinder 4, and a second piston 25. The upstream flow path 18b is divided by a pipe 11. The downstream flow path 18c is divided by the first piston 3, a valve stem 5a, a piston guide 6, and a nozzle head 15. The outlet 18d is located on the nozzle plate 8 and at the downstream end of the downstream flow path 18c.

[0045] The accumulator 17 uses the force from the first force-applying member 13 to make the seated portion 3a of the first piston 3 sit in the forward direction relative to the seated portion 6a of the holding member 16, thereby closing the downstream flow path 18c of the internal flow path 18.

[0046] The upper cover 21 opens and closes the discharge device 1. The upper cover 21 has a cylindrical outer peripheral wall 21a centered on the central axis O when the upper cover 21 closes the discharge device 1, and a top wall 21b connected to the upper end of the outer peripheral wall 21a. The lower end of the outer peripheral wall 21a is detachably mounted to the outer peripheral surface of the outer cylindrical wall 10d of the mounting cover 10.

[0047] Since the discharge device 1 of this embodiment is configured as described above, the following actions are performed by pressing.

[0048] like Figure 2As shown, if the holding member 16 moves forward relative to the second cylinder 4 by pressing against the force of the second force-applying member 14, then firstly, with the downstream flow path 18c closed by the pressure accumulator 17 due to the force from the first force-applying member 13, the holding member 16 moves forward relative to the first cylinder 24 along with the first piston 3, and the internal pressure of the pump chamber 18a increases.

[0049] like Figure 3 As shown, if the seated portion 3a resists the force from the first force-applying member 13 and moves upward away from the seated portion 6a due to the increased internal pressure of the pump chamber 18a, the contents of the pressurized pump chamber 18a flow downstream between the seated portion 3a and the seated portion 6a and are violently discharged (sprayed) from the discharge port 18d. Therefore, a powerful discharge can be achieved from the initial stage of the pressing operation, and as a result, dripping from the discharge port 18d can be suppressed.

[0050] By further pressing, the component 16 is held in place relative to the first cylinder 24 until it reaches its maximum forward position where the connecting part 5b abuts against the upper end of the first cylinder 24. Figure 4 As shown, the connecting part 5b presses the first cylinder 24 in the forward direction, thereby holding the member 16 to advance relative to the second cylinder 4 along with the first cylinder 24 and the second piston 25. As a result, the contents of the pump chamber 18a flow downstream through the seated part 3a and the seated part 6a, and are violently discharged (sprayed) from the discharge port 18d. Therefore, even after the initial stage of the pressing operation, a strong discharge can be achieved, and as a result, dripping from the discharge port 18d can be suppressed. In addition, at this time, the first piston 3 abuts against the limiting step part 24b in the forward direction, thereby keeping the seated part 3a separated from the seated part 6a in the backward direction, and as a result, the pressing operation can be prevented from becoming too heavy.

[0051] If the retaining component 16 reaches the forward limit position relative to the second cylinder 4 along with the second piston 25, the lower end of the second cylinder shaft 25b abuts against the upper surface of the plurality of longitudinal ribs 4i, limiting further forward movement.

[0052] Furthermore, if the pressing operation is released, firstly, the holding component 16 retracts relative to the first cylinder 24 due to the force of the second force-applying component 14, and the sitting part 3a sits on the sitting part 6a due to the force of the first force-applying component 13, thus closing the downstream flow path 18c. Then, in this sitting state, the holding component 16, the first piston 3, and the first cylinder-second piston component 2 retract relative to the second cylinder 4 to the position before the pressing operation due to the force of the second force-applying component 14. In addition, through this retraction action, the internal pressure of the pump chamber 18a decreases, the suction valve 23 opens, and the contents flow from the inside of the container body 20 into the inside of the pump chamber 18a through the upstream flow path 18b.

[0053] According to this embodiment, in the initial stage of the pressing operation, a small amount of contents can be forcefully discharged by accumulating pressure through the accumulator 17 using the first cylinder 24 and the first piston 3. After the initial stage of the pressing operation, a large amount of contents can be forcefully discharged using the second cylinder 4 and the second piston 25. Therefore, according to this embodiment, it is possible to suppress the increase in cylinder stroke while suppressing the increase in pressing operation, and it is easy to achieve a large discharge (spray) volume.

[0054] This invention is not limited to the above-described embodiments, and various modifications can be made without departing from its spirit.

[0055] Therefore, the discharge device 1 of the above embodiment can be modified as long as it is a discharge device 1 with the following features: a first cylinder 24; a first piston 3 that slides on the first cylinder 24; a second cylinder 4 that is mounted on the opening 20a of the container body 20; a second piston 25 that slides on the second cylinder 4; and a retaining member 16 that moves forward and backward relative to the second cylinder 4 with the first cylinder 24 and the second piston 25 through an external operation, and moves forward and backward relative to the first cylinder 24 with the first piston 3 during its forward and backward movement; The internal flow path 18, in response to the forward and backward movement of the holding member 16, discharges the contents of the container body 20 through the pump chamber 18a divided by the first cylinder 24, the first piston 3, the second cylinder 4, and the second piston 25; the pressure accumulator 17, by using the force from the first force-applying member 13 to make the seated portion 3a of the first piston 3 sit in the forward direction relative to the seated portion 6a of the holding member 16, thereby closing the internal flow path 18; and the second force-applying member 14, which applies force to the holding member 16 in the backward direction relative to the second cylinder 4.

[0056] For example, the discharge device 1 is not limited to a structure in which the contents are discharged in a mist-like manner through the discharge port 18d. Furthermore, the discharge device 1 is not limited to a structure in which the second force-applying member 14 applies force to the first cylinder 24 in a backward direction via the engaging portion 26 between the connecting portion 5b and the first cylinder 24. Additionally, the discharge device 1 is not limited to a structure in which the connecting portion 5b presses the first cylinder 24 in a forward direction at its forward limit position relative to the first cylinder 24. The first cylinder 24 is not limited to a structure having a limiting step portion 24b. The bottom 4d of the second cylinder is not limited to a structure having multiple longitudinal ribs 4i.

[0057] It should be noted that the discharger 1 in the above embodiment is preferably a discharger 1 with the following structure, wherein the holding member 16 has: a cylindrical valve stem 5a extending in the forward and backward direction; a piston guide 6 mounted on the inner circumferential surface of the valve stem 5a and having a seated portion 6a; and a connecting portion 5b integrally connected to the valve stem 5a at a position radially outward of the valve stem 5a, and being forceped in the backward direction by the second force-applying member 14. The holding member 16 is not limited to a structure having a nozzle head 15. The discharger 1 is not limited to a nozzle head 15 type that discharges contents by pressing the nozzle head 15, and can also be configured as a trigger type that discharges contents by pulling an operating trigger, for example. A structure in which the connecting portion 5b and the valve stem 5a are separately formed and assembled together to form the valve stem member 5 can also be adopted.

[0058] The discharge device 1 in the above embodiment is preferably a discharge device 1 in the above structure, wherein the first force-applying member 13 is composed of a compression spring that is compressed by the connecting part 5b and the first piston 3 in the forward and backward direction.

[0059] The discharge device 1 in the above embodiment is preferably a discharge device 1 in the above structure, wherein the connecting part 5b presses the first cylinder 24 in the forward direction at the forward limit position relative to the first cylinder 24.

[0060] The discharge device 1 in the above embodiment is preferably a discharge device 1 in the above structure, wherein the second force-applying member 14 applies force to the first cylinder 24 in the backward direction by means of the engaging part 26 between the connecting part 5b and the first cylinder 24.

[0061] The discharge device 1 in the above embodiment is preferably a discharge device 1 with the following structure, wherein the discharge port 18d of the internal flow path 18 discharges the contents in a mist form.

Claims

1. A discharge device, characterized in that, have: First cylinder block; The first piston slides on the first cylinder; The second cylinder is installed at the opening of the container body; The second piston slides on the second cylinder; A retaining component that moves forward and backward relative to the second cylinder along with the first cylinder and the second piston by an external operation, and moves forward and backward along with the first piston relative to the first cylinder during its forward and backward movement; An internal flow path, which responds to the forward and backward movement of the holding member, discharges the contents of the container body through a pump chamber divided by the first cylinder, the first piston, the second cylinder, and the second piston; The accumulator section closes the internal flow path by using the force applied from the first force-applying component to cause the seat portion of the first piston to be seated in the forward direction relative to the seated portion of the retaining component. as well as The second force-applying component applies a force to the retaining component in a backward direction relative to the second cylinder.

2. The discharge device according to claim 1, characterized in that, The retaining member has: a cylindrical valve stem extending in the forward and backward direction; a piston guide mounted on the inner circumferential surface of the valve stem and having the seated portion; and a connecting portion integrally connected to the valve stem at a position radially outward from the valve stem and being forceped in the backward direction by the second force-applying member.

3. The discharge device according to claim 2, characterized in that, The first force-applying component is composed of a compression spring, which is compressed by the connecting part and the first piston in the forward and backward direction.

4. The discharge device according to claim 2 or 3, characterized in that, The connecting part presses the first cylinder body in the forward direction at the forward limit position relative to the first cylinder body.

5. The discharge device according to any one of claims 2 to 4, characterized in that, The second force-applying component applies force to the first cylinder in the backward direction by means of the engaging portion between the connecting portion and the first cylinder.

6. The discharge device according to any one of claims 1 to 5, characterized in that, The internal flow path discharges the contents in a mist-like manner through its outlet.

Images