JP4588611B2 - Liquid container lid structure - Google Patents

Description

  The present invention relates to a lid structure in a liquid container such as a pot, and more particularly to a structure for attaching and detaching a lid to a stopper.

  The lid structure of the liquid container generally includes a lid member that is detachably screwed to the stopper and a seal portion that is attached to the lid and seals the outlet of the stopper. When opening and closing the outlet of the plug body, the lid member is twisted once or twice to attach / remove. Hereinafter, this lid structure is referred to as “screw type” (Patent Document 1).

In addition, as a lid structure for other liquid containers, a suction mouth is attached to the outlet of the stopper so as to be movable up and down, and the suction mouth cap is elastically engaged with the outlet and the outlet is sealed. Is also known. When the mouthpiece cap is pulled up, the mouthpiece moves upward at the same time, and when the mouthpiece cap is pulled up more than a certain level, the engagement with the mouthpiece is released by elastic deformation of the engaging rib, and the mouthpiece cap is opened. . Hereinafter, this lid structure is referred to as a “pull-up type” (Patent Document 2).
Japanese Patent Laid-Open No. 2003-155050 (paragraph 0015, FIGS. 1 and 2) Japanese Patent No. 3194808 (paragraph 0016, FIGS. 1 and 2)

  The screw-type lid structure disclosed in Patent Document 1 requires the lid member to be twisted once or twice when the lid member is attached or detached. Further, the pull-up type lid structure shown in Patent Document 2 has a quick operation, but since the suction cap is elastically engaged with the suction mouth, a normal liquid container having no suction mouth, That is, it cannot be applied to a lid structure in which a lid cap is directly fitted to an outlet member of a liquid container. It is also possible to omit the mouthpiece and adopt a structure in which the mouthpiece cap is directly fitted to the mouthpiece main body part, but the engagement between the two is due to the elastic deformation of the engagement ribs, There is a risk that it can be easily removed by pulling up the mouthpiece cap.

  Also, in general, in a lid structure in which a lid member is fitted to a stopper, it is necessary to securely attach the lid member to the stopper and seal the outlet, and due to the effects of assembly errors and dimensional variations of parts, etc. There is also a problem that the lower end of the lid member interferes with a part of the plug body to prevent smooth fitting of the lid member.

  Therefore, the present invention is a lid that is fitted to a stopper of a normal liquid container that does not have a mouthpiece, and can be quickly opened by pulling up the lid without twisting. It is an object of the present invention to provide a lid structure that stabilizes the posture of a member and that can be securely and securely engaged by the action of a lock structure.

  In order to solve the above problems, the present invention relates to a lid member 6 that is detachably fitted to the plug body 4 and a plug member 4 provided on the lid member 6 as shown in FIG. 2A. It is assumed that the liquid container has a lid structure including an detachable engaging means 15 and a lid packing 16 that is attached to the lid member 6 and seals the outlet 5 ′ of the stopper 4.

  In the present invention, the lid member 6 has a lid cap 12 having a cylindrical portion 17 that is externally fitted to a portion including the outflow port 5 ′, and an outer periphery of the cylindrical portion 17 of the lid cap 12 that can be moved up and down. It is composed of a combination of a combined lid ring 13 and a spring 14 interposed between the lid cap 12 and the lid ring 13.

  The engagement means 15 is disposed on the outer peripheral portion of the engagement hole 22 provided in the cylindrical portion 17 of the lid cap 12, and the regulation rib 39 facing the engagement means 15 is provided on the inner peripheral surface of the lid ring 13. An engagement release space 44 is provided below the restriction rib 39.

  When the engaging means 15 in contact with the regulating rib 39 is engaged with the outer periphery of the plug body 4 through the engaging hole 22, the engaging means is moved when the lid ring 13 is moved upward by an external operation. 15 is disengaged facing the disengagement space 44.

  When the lid member 6 is fitted and closed to the outlet 5 ′, the cylindrical portion 17 and the upper end of the guide surface 8 are positioned earlier in time than the engagement means 15 engages with the engagement protrusion 9. Configured to overlap.

  In the lid structure having the above configuration, in a normal state, the lid member 6 is fitted to the plug body 4, the outlet 5 ′ is sealed by the lid packing 16, and a part of the engaging means 15 is the outlet member 5. The regulating rib 39 on the inner peripheral surface of the lid ring 13 is brought into contact with and locked by the engaging means. As a result, the lid member 6 closes and seals the outlet 5 ′ of the plug 4.

  When the lid member 6 is removed and the outlet 5 'is opened, if the lid ring 13 is gripped and moved upward, the regulating rib 39 integrated therewith rises, and the outer end of the engaging means 15 is disengaged. Facing space 44. When the lid member 6 is pulled up in this state, the outer end portion of the engaging means 15 falls into the space 44 and the lock is released, so that the lid member 6 can be removed from the plug body 4, thereby the outlet 5 ′. Is released.

  Further, at the beginning of the fitting of the lid member 6 to the outlet member 5, the lower end of the cylindrical portion 17 is fitted to the upper end of the guide surface 8 at an earlier stage than the hook 33 is engaged with the engaging protrusion 9. By the fitting, the posture of the lid member 6 is stabilized. Since the engagement of the hook 33 with the engagement protrusion 9 starts after stabilization, the engagement is started at the same time without causing a time delay in starting the engagement of the plurality of hooks 33.

  The engaging means 15 may be formed by a hook 33 provided integrally with the cutout ring 32. The hook 33 having a hook inner end portion 33 a that engages with the outlet member 5 and a hook outer end portion 33 b that contacts the regulating rib 39 can be used. Further, a configuration in which the hook 33 is provided at the lower end of the bending portion 34 integrated with the cutout ring 32 can be adopted. Further, when the hook 33 itself can be bent, when the cover member 6 is covered, the hook 33 can be covered while bending without moving the cover ring 13 upward in advance.

  The outer diameter of the guide surface 8 is normally set equal to the outer diameter of the engaging protrusion 9, but the surface pressure between the guide surface 8 and the guide surface 8 having a large contact area with the cylindrical portion 17 is large. May occur, and the cylindrical portion 17 may not be smoothly fitted. In this case, it is desirable that the outer diameter of the guide surface 8 be smaller than the outer diameter of the engaging protrusion 9 by a required fitting gap.

  Further, in a state where the lid member 6 closes the outlet 5 ′, a part of the lid member 6 (for example, the lower end of the lid ring 13 or the lid cap 12) and a part of the plug body 4 (for example, the plug cover 11). It is desirable to provide a predetermined clearance (δ or δ ′) in the vertical direction.

  As described above, according to the present invention, when the outlet of the plug body is opened, the engagement means is disengaged by grasping the lid ring and lifting it slightly, and the lid ring is still grasped. The outlet can be opened by pulling up the entire lid member. Further, when closing the outlet, when the lid member is fitted to the outlet member and pushed down, the engaging means is pushed inward by the regulating rib, and is engaged with the outlet member and locked. Thus, any operation of opening and closing the lid member does not involve a screw operation, and the opening and closing operation can be quickly performed only by the operation in the vertical direction.

  Further, when the lid member 6 is fitted to the outlet member 5 and the outlet 5 ′ is closed, the lower end of the cylindrical portion 17 is guided to the guide surface 8 at an earlier stage than the hook 33 is engaged with the engaging protrusion 9. So that a part of the hooks engage with each other first in time, so-called half-engagement is prevented, and the hooks can be smoothly fitted.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  The liquid container which is a target of Example 1 is a portable pot as shown in FIGS. 1 to 3. This pot is a container body 1 composed of a vacuum double container 1a and a shoulder member 2 fixed to the upper end opening thereof, and is screwed to the shoulder member 2, and a stopper packing 3 (FIG. 2A) is formed in the opening of the container body 1. And the lid member 6 fitted to the outlet member 5 of the plug body 4 and the like.

  As shown in FIG. 2E, the plug body 4 includes an outlet member 5, a plug skirt portion 7 that is screwed to the screw portion 2 a of the shoulder member 2, and a plug that covers the upper surface portion of the plug skirt portion 7. And a cover 11. A hole 7a is provided at an eccentric position of the plug skirt portion 7, and a hole 11a of the same diameter of the plug cover 11 is forcibly fitted into the hole 7a so that the plug skirt portion 7 and the plug cover 11 are integrated. It becomes. A detent projection 35 is provided on the inner peripheral surface of the hole 11 a of the stopper cover 11.

  The outlet member 5 is inserted from the side of the hole 7a of the plug skirt portion 7, and the packing 5a attached to the outlet port member 5 is brought into close contact with the hole 7a of the plug skirt portion 7 so as to be sealed. Further, an anti-rotation groove 35 'is formed in the vertical direction above the packing 5a, and a step portion 5b is provided below the packing 5a. The anti-rotation groove 35 'is engaged with the anti-rotation protrusion 35, and the outlet member 5 is positioned in the circumferential direction (see FIG. 6B). Further, the stepped portion 5b engages with the lower end portion of the hole 7a, so that the outlet member 5 is prevented from coming out upward.

  An outlet 5 ′ is provided at the upper end of the outlet member 5, and an air vent hole 10 is provided at an eccentric position inside the outlet 5 ′. Further, the stopper packing 3 is mounted on the outer periphery of the lower end of the outlet member 5, and the stopper packing 3 is in close contact with the inner surface of the opening of the container body 1.

  An engagement protrusion 9 is formed on the outer peripheral surface of the outlet member 5 protruding upward from the hole 11a of the plug cover 11, and an engagement having a groove bottom having a smaller diameter at the bottom of the engagement protrusion 9 is provided. A groove 9 ′ is provided (see FIGS. 2A to 2C). Further, the outer diameter surface of the lower portion of the engagement groove 9 ′ is provided with a guide surface 8 having a small diameter that is equal to or smaller than the maximum diameter of the engagement protrusion 9. As will be described later, the guide surface 8 substantially contacts the cylindrical portion 17 of the lid cap 12 when the lid member 6 is covered, and holds the posture of the lid member 6.

  As shown in FIG. 3, the lid member 6 for opening and closing the outlet 5 ′ includes a lid cap 12, a lid ring 13 fitted to the outer periphery thereof, a spring 14 mounted between them, and engaging means. 15 and lid packing 16 (see FIG. 2A).

  The lid cap 12 is formed by integrally providing a top plate 18 having a larger diameter at the upper end of the cylindrical portion 17 and an outward collar portion 19 at the lower end of the cylindrical portion 17. Flat surfaces 17a (see FIGS. 3 and 4B) are formed at four locations on the outer periphery of the cylindrical portion 17. A pair of left and right ribs 21 and 21 are provided in a range extending from the lower ends of the left and right side edges forming each flat surface 17a to the middle. The lower end of each rib 21 reaches the outward collar portion 19. An outward flange portion 19 between the ribs 21 and 21 is cut away to form an open portion 20. The size of the open portion 20 is limited by a limiting rib 40 protruding outward from the lower end of the cylindrical portion 17.

  An engaging hole 22 (see FIG. 2B) is provided in the flat surface 17a between the pair of ribs 21 and 21 so as to penetrate the inner and outer surfaces.

  A number of reinforcing ribs 23 (see FIG. 3) are provided on the lower surface of the top plate 18. Further, on the top surface of the top plate 18, a string attachment portion 24 is provided so as to be offset from the periphery thereof, and the string 26 is inserted into the attachment hole 25. The other end of the string 26 is attached to a lower string attaching part 24 'provided in the stopper skirt part 7 (see FIG. 1). A lock receiving portion 27 that is opened in a radially outwardly concave shape is provided on the peripheral end surface of the string attaching portion 24, and a lock member 43 described later is engaged with the lock receiving portion 27. The lower string attaching portion 24 ′ may be provided on the stopper cover 11 or the shoulder member 2.

  A packing mounting portion 28 made of a concentric cylinder having a smaller diameter than the cylindrical portion 17 is provided at the center of the lower surface of the top plate 18, and the lid packing 16 is mounted on the mounting portion 28. The lid packing 16 has a seal portion 29 bent outward at the upper end portion thereof, and a knob portion 31 is provided at the center portion of the lower end. This knob portion 31 is provided for convenience when replacing the lid packing 16.

  As shown in FIG. 3, the engagement means 15 is provided at a lower part at four positions of a rounded ring 32 having a slightly larger diameter than the outer diameter of the cylindrical portion 17 and a circumferentially equidistant position of the rounded ring 32. A bending portion 34 that extends inward and slightly curved inward, and a hook 33 provided at the lower end of the bending portion 34. Each hook 33 is bent obliquely upward and inward from the lower end of the bending portion 34 to form a hook inner end portion 33a, and is bent obliquely downward and outward from the lower end of the bending portion 34 so that the hook outer end portion 33b is bent. It is formed.

  The engaging means 15 expands the cutout ring 32 to fit the outer peripheral surface of the cylindrical portion 17. The cutout ring 32 is engaged with and supported by the upper end of the rib 21 to position the engaging means 15 in the vertical direction (see FIG. 4A). Further, each hook 33 is disposed between the pair of ribs 21 so that positioning in the circumferential direction is performed. Each hook 33 is inserted into the engagement hole 22 from the outer peripheral surface thereof. In a normal state, the hook inner end portion 33 a protrudes from the inner peripheral surface of the lid cap 12, and the hook outer end portion 33 b is the outer periphery of the lid cap 12. Protrudes into the surface (see FIG. 2B). Further, the bending portion 34 abuts on the flat surface 17a of the cylindrical portion 17 (see FIG. 4B), and the engagement means 15 is positioned in the radial direction.

  As shown in FIG. 4B, the inner diameter of the cutout ring 32 is slightly larger than the outer diameter of the cylindrical portion 17 (see the diameter difference S in FIG. 4), that is, the upper end of the bending portion 34, that is, This is because the position of the bending fulcrum is determined outside the cylindrical portion 17. As shown in the figure, since the surface of the cylindrical portion 17 facing the bending portion 34 is a flat surface 17a, the distance S ′ between the circular ring 32 and the portion facing the flat surface 17a is the diameter described above. It is larger than the difference S. By providing such an interval S ′, the bending portion 34 can be given a required curvature.

  The outward flange portion 19 closes the gap between the cylindrical portion 17 and the lid ring 13 (see FIG. 2A) and prevents foreign matter from entering. Further, the opening 20 due to the notch of the outward flange portion 19 between the pair of ribs 21 is useful for draining the cleaning water that has entered the inside of the lid member 6. The opening portion 20 is limited to a necessary minimum size by the limiting rib 40 to prevent entry of foreign matter from the outside.

  As shown in FIG. 3, the lid ring 13 is formed such that the upper half is slightly larger in diameter than the lower half, the outer circumferential stepped portion due to the difference in diameter is a finger hook portion 37, and the inner circumferential stepped portion is a spring receiving portion. 38. In addition, it replaces with the structure formed with the level | step difference part by a diameter difference, and the finger-hanging part 37 can be formed also by providing anti-slip | skid parts, such as a knurling, on the outer peripheral surface of the same diameter.

  Further, on the inner peripheral surface of the small-diameter portion of the lid ring 13, U-shaped restriction ribs 39 opened upward are provided at four equal positions, and small protrusions 41 are provided at two centrally symmetric positions. . An attachment portion 42 is provided on the outer peripheral surface of the large diameter portion, and a lock member 43 is attached to the attachment portion 42 so as to be rotatable in the vertical direction. In the state of FIG. 2 in which the lid member 6 is fitted to the plug body 4, the upper end of the standing lock member 43 is engaged with the lock receiving portion 27 described above, and the lid ring 13 is moved upward with respect to the lid cap 12. Stop.

  The lid ring 13 houses the spring 14 on the inner peripheral surface thereof, supports the lower end thereof on the spring receiving portion 38, and is positioned in the circumferential direction so that the regulating rib 39 fits between the pair of ribs 21. While being engaged, the engagement means 15 is fitted to the outer periphery of the cylindrical portion 17 of the lid cap 12 that has been fitted. By the fitting, the upper end of the spring 14 hits the lower surface of the top plate 18 and is compressed. With the upper end of the lid ring 13 aligned with the upper surface of the top plate 18 of the lid cap 12, the small protrusion 41 is engaged with the upper surface of the collar portion 19, and the lid cap 12 and the lid ring 13 are integrated to form a lid member. 6 is configured.

  At this time, as shown in FIGS. 5A and 5B, the hook outer end portion 33b of each hook 33 abuts on the regulating rib 39, the movement of the hook 33 to the outer surface side is regulated, and the hook 33 is locked. . Further, an engagement release space 44 in which the hook outer end portion 33b of the hook 33 falls is formed between the lower end of the restriction rib 39 and the inner peripheral surface of the lower end portion of the lid ring 13 (see FIG. 5A). In this case, the lid ring 13 is at a relatively low position with respect to the hook 33.

  In the state of FIG. 6A in which the lid member 6 is fitted to the outlet member 5 of the plug body 4, when the lid ring 13 is at a relatively low position with respect to the hook 33, the outer end portion of the hook 33b hits the regulating rib 39 and the outward movement is regulated, and the hook 33 is locked. Moreover, when it exists in a relatively high position (refer the dashed-dotted line of Fig.6 (a)), the hook outer end part 33b will oppose the said engagement release space 44, and will be in a lock release state.

  As shown in FIG. 7A, the lower surface of the engagement protrusion 9 of the plug body 4 with which the hook inner end portion 33a is engaged is formed from the engagement groove 9 '(that is, from below). The upper surface of the engaging protrusion 9 is an inclined surface 9b opposite to the inclined surface 9a.

  As shown in FIG. 2C, when the lid member 6 is fitted and closed to the outlet member 5, the cylindrical portion 17 is in a stage earlier in time than the hook 33 is engaged with the engaging protrusion 9. The upper end of the guide surface 8 and the upper end of the guide surface 8 overlap each other (L in the figure indicates the overlap amount). For this reason, at the beginning of the fitting of the lid member 6 to the outlet member 5, the lower end of the cylindrical portion 17 is fitted to the upper end of the guide surface 8 at an earlier stage than the hook 33 is engaged with the engaging protrusion 9. And the attitude | position of the cover member 6 is stabilized by the fitting. Since the engagement of the hook 33 to the engagement protrusion 9 starts after the posture of the lid member 6 is stabilized, the engagement start of the plurality of hooks 33 is simultaneously engaged without causing a time delay. For this reason, the inconvenience of a so-called semi-engagement state is solved.

  The outer diameter of the guide surface 8 is normally set equal to the outer diameter of the engaging protrusion 9, but a large surface pressure is formed between the guide surface 8 and the guide surface 8 having a large contact area with the cylindrical portion 17. May occur, and the cylindrical portion 17 may not be smoothly fitted. For this reason, it is desirable that the outer diameter of the guide surface 8 be formed smaller than the outer diameter of the engaging protrusion 9 by a required fitting gap.

  Further, in a state where the lid member 6 closes the outlet 5 ′, a part of the lid member 6 (for example, the lower end of the lid ring 13 or the lower end of the cylindrical portion 17 of the lid cap 12) and a part of the plug body 4 ( For example, it is desirable to provide a predetermined clearance (δ or δ ′) in the vertical direction between the plug covers 11) as shown in FIG. 2D. This is because the lid member 6 can be smoothly attached to and detached from the plug body 4 under various conditions (for example, insufficient fitting between the plug skirt portion 7 and the plug cover 11 and variations in component dimensions).

  The lid structure of the first embodiment is as described above, and the operation thereof will be described next. In the state of FIG. 2A in which the lid member 6 is fitted to the plug body 4 and the outlet port 5 ′ is closed, the outlet member 5 of the plug body 4 is sealed by the seal portion 29 of the packing 16. The lid member 6 is engaged with the engagement protrusion 9 by the hook 33 of the engagement means 15, and the hook 33 is locked by the restriction rib 39 (see FIG. 7A). The lid ring 13 of the lid member 6 is locked by the lock member 43 engaging with the lock receiving portion 27 of the lid cap 12.

  Here, when the lid member 6 is removed and the outlet 5 ′ is opened, the lock member 43 is removed from the lock receiving portion 27 to unlock the lid ring 13, and then the finger hooking portion 37 on the outer peripheral surface of the lid ring 13 is moved. Grip and lift the lid ring 13 slightly against the spring force of the spring 14. Then, the lid ring 13 rises from the solid line state of FIG. 6A as shown by a two-dot chain line, and the hook outer end portion 33b of the hook 33 faces the engagement release space 44 (see FIG. 7B). . As a result, the hook 33 is released from the regulating rib 39 and the lock is released. Subsequently, by pulling up the entire lid member 6, the lid member 6 is removed and the outflow port 5 'is opened. The removed lid member 6 is supported on the stopper skirt portion 7 by a hanging strap 26 (see FIG. 1). By tilting the container body 1, the liquid flows out from the opened outlet 5.

  Next, when the lid member 6 is fitted to the outlet 5 ′ in the open state to close the outlet 5 ′, the lid ring 13 is hooked by the spring 14 as shown in FIG. In this state, the hook inner end portion 33a hits the inclined surface 9b and further rides on the engaging protrusion 9, whereby the hook 33 itself is bent. When the engagement ridge 9 is overcome, the hook inner end portion 33a engages with the inclined surface 9a and is locked (see FIG. 8B). At the same time, the seal portion 29 of the lid packing 16 seals and closes the outlet 5 '.

  As described above, the lid member 6 is opened and closed by being pulled up and closed by being pushed down, and is not twisted. Therefore, the string 26 attached to the lid member 6 is not twisted.

  If the hook 33 is formed to be relatively thick as shown in the modified example shown in FIG. 9 and does not have a bending property, when the lid member 6 is fitted, as shown in FIG. The lid ring 13 is gripped in advance and moved upward, the hook outer end portion 33b faces the disengagement space 44, and the bending protrusion 34 is bent and the engagement protrusion 9 is exceeded.

  When disassembling the plug body 4 for cleaning, the lid member 6 is first removed from the plug body 4, and then the plug skirt portion 7 is removed from the screw portion 2 a of the shoulder member 2. Next, the outlet member 5 is extracted from the holes 11 a and 7 a by pushing the outlet 5 ′ of the outlet member 5 downward from above. Since the plug skirt portion 7 and the plug cover 11 are forcibly fitted to each other, they cannot be disassembled. Thereby, as shown to FIG. 2E, it can be decomposed | disassembled into 2 parts of the assembly of the outlet member 5, the plug skirt part 7, and the plug cover 11. FIG.

The front view which shows a part of pot of Example 1 Longitudinal front view Partial enlarged sectional view of FIG. 2A 2A is a partially enlarged sectional view when the lid is fitted in FIG. 2A. Partial enlarged sectional view of FIG. 2A Exploded sectional view of plug member 1 is an exploded perspective view of a lid member according to Embodiment 1. FIG. (A) Front view of a part of the lid same as above, (b) Cross-sectional view taken along line bb in (a). (A) Sectional view of lid member same as above, (b) Sectional view along line cc in (a) figure (A) Sectional drawing of the closed state of a lid member same as the above, (b) Sectional drawing of the dd line | wire of (a) figure (A) Cross-sectional view of the hook portion of the above, in the locked state, (b) Cross-sectional view of the lock portion, as above. (A) Sectional view of hook part at the time of starting lid member fitting same as above, (b) Sectional view of hook part in the state of lid member fitting same as the above Sectional view of the hook part at the start of lid member fitting when the hook is not bendable

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container body 1a Vacuum double container 2 Shoulder member 2a Screw part 3 Plug packing 4 Plug body 5 Outlet member 5a Packing 5b Step part 5 'Outlet 6 Lid member 7 Plug skirt part 7a Hole 8 Guide surface 9 Engagement protrusion 9 'engagement groove 10 air vent hole 11 plug cover 11a hole 12 lid cap 13 lid ring 14 spring 15 engagement means 16 lid packing 17 cylindrical portion 17a flat surface 18 top plate 19 outward flange portion 20 opening portion 21 rib 22 engagement Hole 23 Rib 24 String attachment portion 24 'Lower string attachment portion 25 Attachment hole 26 String 27 Lock receiving portion 28 Packing attachment portion 29 Sealing portion 31 Knob portion 32 Round ring 33 Hook 33a Hook inner end portion 33b Hook outer end portion 34 Bending Portion 35 Anti-rotation protrusion 35 'Anti-rotation groove 37 Finger hook portion 38 Spring receiving portion 39 Restriction rib 40 Restriction rib 41 Small protrusion 42 Mounting portion 43 Lock member 4 disengagement space 45 ribs

Claims (4)

A lid member (6) detachably fitted to the plug body (4), an engagement means (15) provided on the lid member (6) and detachable from the plug body (4); In the lid structure of the liquid container comprising the lid packing (16) attached to the lid member (6) and sealing the outlet (5 ′) of the plug (4),
The lid member (6) includes a lid cap (12) having a cylindrical portion (17) fitted to a portion including the outflow port (5 ′), and the cylindrical portion (17) of the lid cap (12). A lid ring (13) engaged with the outer periphery of the lid cap (12) and a spring (14) interposed between the lid cap (12) and the lid ring (13). The lid packing (16) is mounted inside the cylindrical portion (17), and the engaging means (15) is disposed on the outer peripheral portion of the engaging hole (22) provided in the cylindrical portion (17). The lower end inner diameter of the cylindrical portion (17) is formed to a size that fits the guide surface (8) of the outlet member (5), and the engagement means (15) is formed on the inner peripheral surface of the lid ring (13). And a disengagement space (44) below the regulating rib (39). ), And the engaging means (15) that is in contact with the regulating rib (39) is engaged with the engaging protrusion (9) on the outer periphery of the plug (4) through the engaging hole (22). When the lid ring (13) is moved upward by an external operation, the engagement means (15) is disengaged against the disengagement space (44), and the lid member (6 ) Is fitted and closed to the outlet (5 '), and the cylindrical portion (17) and the guide are guided earlier in time than the engaging means (15) engages with the engaging protrusion (9). So that the top of the surface (8) overlaps ,
The engaging means (15) is formed by a hook (33) provided integrally with the cut-off ring (32), and the hook (33) is an inner end of the hook (4) that engages with the plug (4). have a abutting hook outer end (33b) to 33a) and the restricting rib (39),
The hook (33) is provided at a lower end of a bending portion (34) extending downward from the cut ring (32), and the hook inner end portion (33a) is an inner peripheral side of the lower end of the bending portion (34). to be formed, the hook outer end (33b) is the bending portion (34) a lid structure of a liquid material container you characterized in that it is formed on the outer periphery of the lower end. Outer diameter of the guide surface (8), the liquid container according to claim 1, characterized in that formed in the small diameter only gap outer diameter or the required mating equal of the engagement ridge (9) Lid structure. In a state where the lid member (6) closes the outflow port (5 ′), a predetermined clearance in the vertical direction between the part of the lid member (6) and the part of the plug (4) (δ or the lid structure of the liquid container according to claim 1 or 2, characterized in that [delta] ') is present. A part of the lid member (6) is either a lid ring (13) or a lid cap (12), and a part of the plug (4) is a plug cover (11). The lid structure of the liquid container according to claim 3 .

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