JPS60123358A - Discharger for active material vessel, particularly, thrust piston pump - Google Patents

Abstract

1. Tamper-resistant protective overcap, which can be removed for use, for a manually operated dispenser having an active substance dispensing head (11) for mounting on active substance containers, such as containers for medical therapy and prophylaxis substances, whose dispensing head (11) projecting on the outside is covered by the protective overcap (17), which is fixed to a counterpart (15, 30) of the dispenser by at least one detachable connection, which has at least one predetermined breaking element and at least one self-locking snap connection (22) with interengaging connection elements of the two components to be fixed against one another, the snap connection being inacessibly covered with respect to the outside as a result of the fact that the connecting element (23) of the snap connection provided on the protective overcap (17) projects over the open end face (19) of said overcap (17) for the substantially completely surface-flush engagement in a frontal opening (31) of the connecting element provided on the counterpart, characterized in that one of the two interengaging connecting elements (23) of the particular snap connection (22) is directly secured by means of at least one of the predetermined breaking elements (34) on the associated component and that the connection of protective overcap (17) to the dispensing head (11) can only be broken by destruction.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a manually operated dispensing device, particularly a thrust piston pump, for attachment to agent containers, such as containers for medical therapeutic and prophylactic agents.
More particularly, it has an active substance delivery head projecting on the outside, which delivery head is covered by a cap, which cap is connected to a corresponding part of the device by at least one connection, which connection can only be broken off. The present invention relates to a dispensing device which can be uncoupled and is equipped with a predetermined rupture part.

This type of safety device is particularly useful in containers equipped with a dispensing device, in which the entire remaining content of the container is immediately consumed after the first use, or in which case the container is Of course, it is necessary for the user to know that no discharge took place or that no foreign matter entered the container after the original filling.

The object of the present invention is to simplify the installation of the protective cap,
Moreover, it is intended to provide a discharge charge of the type mentioned above, in which it can be reliably known that the closure by the insurance cap is complete.

This problem is solved in the cypress discharge device mentioned at the outset, according to the invention, by designing the connection as a self-locking snap connection and covering the snap connection from the outside so that it cannot be manipulated. . Thereby, the snap connection is locked in such a way that it can only subsequently be uncoupled by destruction when the immobilization cap is put on.

If the snap connection is broken, the user will be clearly aware that the dispensing head will be opened after the first filling of the container and therefore unacceptable manipulation of the container cannot be ruled out.

In another feature of the invention, the connecting member provided on the protective cap is provided on the hook body tL extending in the direction of removal of the protective cap, and at least one other connecting member (for resting against the opposite side of A). The snap connection therefore acts as a covered or encapsulated form-complementary connection and is extremely secure.

The encapsulation of the snap connection can be achieved, for example, by the fact that the connecting member of the protective cap is placed at its open end, in particular in the covered state, in close contact with the facing surface belonging to the dispensing head and/or without any play in the dispensing head. This is simply achieved in that the connecting member especially projects beyond the end face of the protective camp.

If the delivery device is designed as a thrust piston pump, the delivery device is generally provided with a covering cap, generally provided for manual operation of the device, which carries the delivery head as a valve for the active substance under pressure, etc. ing. In this case, according to another embodiment of the invention, the connecting member is formed by the end wall of the receiving cap, the covering camp carrying the dispensing head and especially provided for manual operation of the device, the covering camp being provided in particular for manual operation of the device. In addition, the connecting member r of the protective camp is provided with a preparatory opening for almost complete insertion and engagement, and in particular has on its inner surface adjacent to said opening an opposing force for the connecting member of the protective camp. There is. Thereby, the protective camp forms a component previously attached to the cap and thus to the dispensing device. The entire structure can be easily fixed to the container later on.

As an alternative to, and in particular in addition to, the above-mentioned arrangement, a connecting part is provided on a fastening flange which is structurally integrated with the housing, which fastening flange connects the device to the container, in particular to its mouth. For example, it is fixed to a threaded cap, a talin ring, etc., and the connecting member has a JR-shaped inner disc shape and is formed by a protruding brim, and this brim is particularly located inside the Q-cap, and is handled and operated from the outside of the connection. It is convenient if the configuration is such that this cannot be done. Thereby, the protective camp is held directly against the fixed flange via at least one snap connection, so that the dispensing head, including the collar 4'J cap, can be removed from other parts of the dispensing device i4'. Even when doing so, the 1Φ joint of the snap is broken.

In a further embodiment of the invention, the axillary surfaces for the hook surfaces of the connecting elements provided in the protective camp are on both end sides of the hook body of the protective cap, and in particular the connecting elements associated with the fixing flange are located on the side of the device axis. It is provided. Thereby, the snap connection is very stable even with its small dimensions, and the hook body is precisely oriented in its intended position by the forces acting on it from both sides.

In order to further simplify the construction of the object of the invention, the predetermined breakage element is provided on the protective cap and is preferably formed by at least one web, in particular two side webs arranged side by side. The end web of the hook body is connected to the outer periphery of the protective cap. Even in the case of flexible construction, the two lateral webs of the joint are oriented precisely by burning the associated connection side into the protective camp.

The predetermined rupture element can be formed in one piece with the associated connecting element and component. Thereby, the predetermined rupture element can also be formed as a film hinge.

This hinge pivotally connects the connecting part to the associated retaining part, so that the connecting part can be easily engaged with a connecting part provided as a mating part.

In a preferred embodiment of the invention, the covering cap of the device covers the fixing flange almost completely and in particular over a small gap, the pupil cap preventing the fixing flange from coming off the container. Therefore, +i! The fact that the container was opened by removing the r+ constant flange can be easily recognized later.

The object of the present invention is to solve the problem in the Yuzu device mentioned at the beginning or the device according to the invention described above, in particular when the fixing flange provided on the container for fixing the device is formed as a threaded cap. The problem is also achieved in that the fixing flange and the cover cap that covers the fixing flange are interconnected 7 via the locking part side in a non-rotatable manner and/or in a complementary manner in the direction of operation of the shredding device. In this case, by rotating the cap, the cap can be screwed into the corresponding thread of the camp hold container with threaded force 1 and tightened to the container.

If the tightening torque overcomes the shear strength of the shear member, the shear member will break at the end of the tightening process. The complementary connection between the threaded cap and the threaded cap is thus broken, so that the threaded cap can no longer be removed from the container by rotating the threaded cap in the opposite direction. However, the tightening of the threaded cap should sometimes not exceed the shearing strength of the shearing member, and the shearing member should be tightened so that the shearing member is broken by a small force when rotating in the direction opposite to the screwing rotation direction. may be formed.

In this case, the fact that the connection has been broken by the shearing member indicates that the container has been opened or that the dispensing device has been operated, for example by pressing down on the affected cap.
, it can be seen that the container is not in its original state, such as immediately after filling or closing. The shearing member can be easily formed by a projection provided on the outer periphery of the fixed flange.

This protrusion engages in a pocket on the inner periphery of the covering cap and is designed to be sheared during rotation and/or manipulation of the covering camp after the device has been installed in the container.

Characteristics and further embodiments of the invention emerge from the embodiment section of the patent claims and the following description based on the figures. In this case, the individual features can be implemented singly or in combination in the embodiments of the invention. The figures show several embodiments of the invention. This embodiment will be explained in detail below.

The equipment shown in Figures 1 and 2 (θ1 is a thrust piston type pump.
It is heated and the pump casing is 2t4niI.

With its annular flange 4, this casing 2 is forced transversely to the central axis 3 of a container opening (not shown) through a seal 5, so that the only container opening is sealed. I'll go ahead. In this state, casing 2
is fixed to the '8 device by a fixing flange 6.

In the embodiment shown, the fixing flange 6 is formed by a so-called crimp ring or folding ring. This crimp ring is preassembled and structurally integrated with the casing 2 and surrounds the casing 2 over most of its length protruding from the container and closely to the annular flange 4. After being fitted into the container casing 211c, the crimp ring 6, which is open under the seal 5, is deformed over its entire circumference in the direction of the central axis 3, viewed in cross section, so that the crimp ring is attached to the container. The casing 2 is connected to the container in a form-complementary and removable manner only by breaking. The device 1 furthermore has a part 7, which in the illustrated embodiment is designed as a pump cylinder and is mounted on the housing 2.

This member 7 is provided with a suction hose 8 which is inserted into the container. A bonfire piston 9 is slidably provided in the cylinder member 7. The tubular end of the piston on the opposite side from the member 7 is constructed as a plug-in tube 10. A nipple-shaped discharge head 11 is inserted into the insertion tube 10 and is tapered conically toward the outer end. This discharge head is provided with an outlet 12 at its outer end. This outlet 12 for the active substance present in the container is centered Il'
It is provided within the Ill line 3. Ejection head 111;j
: together with the covering cap 13, it forms an integral structural part [7]. This covering cap 13 is connected to the end opposite to the outlet 12, and its cylindrical AiS section 14 covers the casing 2, and after the fixing flange 6 has been attached to the container by means of its J-1. , it is not possible to touch the fixed flange 6 from the outside without breaking the cap 13.

The discharge head 11 is provided with a portion 16 having a cylindrical outer periphery in a connection range with the annular disk-shaped end wall of the rock cap 13 . A protective cap 17 that is slightly larger than the discharge head 11 is attached to the discharge head 11. This protective cap is provided on the inner periphery with a bevel fitting part of IL and medium thickness. The annular rib provided abuts the part 16 and seals off the ejection head 11 from the outside, and an end face 19 provided at its open end 18 rests entirely on the outer surface of the end wall 15. The πφ cap 17 is provided with a support rib 20 on the inner periphery of the closed end. This support rib contacts the outer periphery of the dispensing head 11 in a slightly tightened state, so that the outer end of the protective cap 17 is precisely located concentrically with the outer end of the dispensing head 11. Arrow 2 from Ho8 to Cap 17
The ejection head 11 and eventually the ejection port 12 can be exposed by pulling the ejector in one direction.

The protective cap 17 is held in position relative to the dispensing device 1 by diametrically opposed and identically formed snap connections 22, so that the protective cap can be removed from the dispensing head 11 without breaking the snap connections 22. It cannot be removed. The protection cap can then be put on again. In this case, the protective cap is held in part 16 only by circumferential tightening. The protective cap 17 has a hook body 23 k (+if+) attached to each snap connection part 22. This hook body is attached approximately in the direction of the arrow 21 Vc9fH
It protrudes from the end surface 19 of the protective camp 17 in the direction of the arrow 21. The hook body 23 includes two connecting members 24 and 25. Each connecting member 24.
25 has hook surfaces 26, 27 perpendicular to the central axis 3. This hook surface faces in the direction of the removal direction arrow 21, and this hook surface VC is in each case coated with one opposing surface 28, 29 for complementary contact. A coupling part 24 near the end 19 of the protective cap 17 is provided 711 on the outer surface of the hook body 23 opposite to the central axis M-6, and on the opposite surface 28 belonging to the hook surface 26 thereof. fL provided inside the end wall 15 of the cap 16
, and is formed, for example, by an edge surface of at least one reinforcing rib. The other connecting part side 25 is the knock body 23
has a reed on the free end of , the opposite surface 2 belonging to its hook surface 27
9 is provided on a connecting member 30 in the form of an annular disk projecting radially outward. This connecting member is formed as an end collar fL of the fixing flange 6 and is provided in the covering cap 13 at the end portion of the casing 2 facing away from the container. In order to engage each hook body 23 into the interior of the cover cap 13, one opening 31 is provided in the cover Φ.
It is provided on the end wall 15 of the cap. This opening has
The end portions of each hook main body 23 are engaged with each other with almost no play in six rotation directions about the central axis +1ilJe.

The dimension of the opening 31 in the radial direction with respect to the central axis 3 is such that when the protective cap 171 is attached to the ejection head 11, the connecting member 24 snaps into the holding position 2 where it engages the opposing surface 28. The size is such that it can be displaced appropriately.

In order to automatically and elastically push back the connecting member 24 including the hook body 23 during this assembly operation, the connecting member 24 is placed on the side opposite to the central axis 3 by the removal direction arrow 21. It is provided with a turning surface 32 that is contracting in seven opposite directions.

A direction changing surface 33 corresponding to this direction changing surface is provided at the center IIl+P'N 3 fAQ of the connecting portion paulownia 25. Therefore, when attaching the covering cap 13 previously attached to the protective cap 17 to the casing 2, the connecting member 25
connects the connecting member 3 until it jumps behind the counter surface 29.
pushed back by o.

Each hook body 23 is pivotally and elastically connected to the retention cap 17 by a predetermined breaking member 34 . Each predetermined breaking member 34 is formed by two parallel lateral webs 35. This (1+11 side web protrudes from the end surface 36 of the hook body 23 to which it belongs, and is connected to the outer periphery 37 of the protective frame cap at II#D immediately at the end 19 of the protective cap 17.) The member 34 is shaped like lJy so that it can be destroyed simply by rotating the protective cap 17 relative to the ejection head 11.
has been done. After breaking the predetermined breakage member, the retaining cap 17 can be easily removed and installed again.

In Figures 3-5, the same reference numerals are used for parts that correspond to those in Figures 1.2 and are additionally given the suffix "a#" in Figures 3-4 and the suffix "b" in Figure 5. ing.

The embodiment of FIG. 3.4 differs from the embodiment of FIG. 1.2 in that the hook body 23 is shorter. Furthermore,
Since the connecting member 25a of the hook body 25a is chamfered on the side opposite to the deflection surface 35a, the free end of the hook body 23a has a sharp tip in the shape of a cutting edge when viewed in the cross-sectional view of FIG. Therefore, the protective cap 17ai and the ejection head 11aK
During installation, the hook body reaches easily and automatically into the associated opening 51a.

In the embodiment according to FIG. 5, the fastener 7/b is designed as a threaded cap with an internal thread. The fixing flange 6b is screwed into the male thread of the container, for example, the male thread of the mouth part of the container, through this female thread, and the seal 5bi is screwed into the container.
Pressure M? It is tightened with the specified torque while +shifx. The cylindrical wall portion 14bld of the tear cap 13t extends beyond the open end of the fixing flange 6b and surrounds the fixing flange with a small gap. Fixed flange 6b
On the outer periphery 39 of, adjacent to the open end of the fixed flange,
A protruding shearing member 38 is provided. This shearing member engages without modification or with a slight play in a pocket-shaped recess 41 in the inner periphery 41 of the samurai cap +31). Thereby, the fixed flange 6b and the extraction camp 13bi are mutually connected in a complementary manner in both rotational directions around the central axis i1b, in the direction of the arrow 21b, and in the direction of reaction to the arrow 21b.

A shearing member 3 that can be provided on the cap 13b
8 is connected to the affiliated component part 6b via the scheduled rupture part. In this case, the planned rupture point′! 1. A cracks when the fixed flange 6b reaches the desired tightening moment when screwed into the container. T-Ii! ;'I can be formed so that the shape-complementary connection between the fixed flange 6b and the rupture camp 13b is released. but,
The shear strength of the shear phase 38 in the threading direction may be selected to have the following magnitude. That is, the shearing member is only broken when the covering cap 13bi is removed from the fixed two-lanshiro bft container by rotating it in a counter-inclination direction, or the operation shown by arrow 42 in order for the wandering cap 13b to carry out the pumping movement of the piston 9b. It can be selected to break when pushed down in the direction.

In Figures 6 and 7, the same numbers are used for parts that correspond to those in Figures 1 to 5, with the addition of the suffix "C#". It is the same as the embodiment shown in Fig. 1.The forming field 1 is used as the arm 23c of the hook body.
．． The member supporting the connecting member 25cl is formed as one arm of a biarm-shaped lever 46. This lever 46 is connected to the ring-shaped end wall 1 of the upper rule of the covering cap 15c.
5Q, on the pivot axis 48i located tangentially to the outer periphery of the retention cap f7c and slightly away from this outer periphery, it is movable relative to all other parts of the device. is supported by. For this bearing, two pivot webs 35c are provided which are spaced apart and arranged next to each other. This pivot web can be formed integrally with the arm 23c and the protective cap 17c, and furthermore, the lever 4
6 may be provided with an elastic return characteristic that automatically returns the anal section 25c to its holding position when the bias is released. Alternatively, the arms 45 of the two-armed lever 46, which are connected within 1 m of each other, are formed as a handle 43 in the form of a small plate, which extends over a distance corresponding to the length of the pivoting web 35Q. It is separated from the outside L'fl of the bamboo protection cap 17. A locking member 44 in the shape of an elongated breaking piece is provided with almost no play between the inner surface of the handle 43 and the outer periphery of the protection cap 17c. This locking member protrudes beyond the top of the handle 43, and is provided in a square plane with respect to the surface of the handle 43.Locking portion A:J
' 44 is formed integrally with the lever 46, the pivot web 35c and the protective cap 77Q, and its lower end is connected to the pivot web 35C via a linear predetermined breaking point 340. This predetermined rupture point is 111 smaller and parallel to the pivot web 35c. Thereby,
The related IF member 44 is located not in the center of the width of the handle 43 but in the center of the width of the handle 43.
It is located next to the side edge of 3. The handle 43 is the locking member 4
4 prevents the protective cap 17c from swinging toward the outer periphery. The locking member 44 is removed by breaking the planned breakage point 34c, or the locking member is swung around the planned breakage point 34C perpendicular to the swing axis 48 and tilted outward. The handle 43 can be operated for the first time. During this operation, the connecting portion vU35C swings away from the connecting member 30 of the fixed flange 6C, thereby releasing the 1. Ru. Therefore, the insurance fraud cap 17c
l Can be removed.

When reinstalling the retention cap 17, make sure to
j: As the deflection surface 33 moves on the connecting portion 30c, it swings back to its original position against the spring force. Thereafter, the connecting member 25 engages with the connecting member 3QC- in the holding position, so that the insurance cap 17c'i can be repeatedly engaged in the mounting position. The arm 23c is the connecting member 2
5c and extends downward to form an abutting extension 47'f. The lower end of this extension is covered with a protective cap 17.
0 is opposed to the end shoulder of the fixed flange 6C. When the protective camp 17C is installed, when the self-propelled cap 13c is pulled in the axial direction in the discharge direction, the abutment extension part 4
7 comes into contact with the fixed flange 6C. That is, the discharge stroke cannot be performed when the sampling cap 17c is attached.

[Brief explanation of the drawing]

Fig. 1 is a partial sectional view of the discharging device according to the present invention, Fig. 2 is a plan view of the device of 1st stage 1, and Fig. 3 is a snap connection slightly deformed compared to the actual example shown in Fig. 1.2. Enlarged view of the section,
4 is a left side view of the snap connection shown in FIG. 6, FIG. 5 is a view similar to FIG. 1 showing another embodiment of the discharge device, and FIG. 6 is an axial sectional view of the other embodiment. , FIG. 7 is a right side view of the embodiment of FIG. 6. 11...Discharge head 17...Protective cap 19...End face 22...Snap connection part 24.25...Connection part 31...Opening agent Hikaru Esaki Good agent Hikaru Esaki Continued from page 1 @ Inventor Thomas Skorka Doiwayune @ Inventor Leo Melch Doiuse, Federal Republic of Radolführ, Josefbotsitlase, 5 Federal Republic of Siplingen, Radhaussudra 5

Claims (1)

Claims: 1. Manually operated dispensing device, especially for thrust piston pumps, for use in mounting on agent containers, such as containers for medical therapeutic and prophylactic agents. A removable protective and sealing cap with an outwardly projecting active substance delivery head, which is covered by a camp which is connected to a corresponding part of the device by at least one connection. In camps where this connection can only be uncoupled by rupture and is equipped with a predetermined rupture member, the opening (31) of the device has a cap for full insertion and engagement. Connecting members (24, 25) provided in (17), snap connecting part (22) that performs self-locking by protruding from the open end surface (19) of the cap (17)
A cap characterized in that a connecting portion formed as a cap is covered so that it cannot be handled and operated from the outside. Z The connecting members (24, 25) of the protective cap (17) are provided on the hook body (23) extending approximately in the removal direction (21) of the protective cap (17), and at least one other connecting member (1s, 30) at least one hook surface (26, 27) transversely to the removal direction (21) for contact with the opposite surface (28, 29) of the The cap described in Range 1. (5) The connecting members (24, 25) of the protective cap (17) protrude from the end (18) of the protective cap beyond the end surface (19), and this end surface (19) is particularly in the contact state when it belongs to the ejection head (11). 3. A cap according to claim 1 or 2, characterized in that the cap is in close contact with the opposing surface of the cap and/or surrounds the discharge head without play. 4. The connecting member is the end of the covering cap (13) @ (15)
This coated camp is formed by the discharge head (1
1) I carry and especially provide for manual operation of the device, and the actuating cap furthermore allows the connecting member (24°25) of the time keeping cap (11) to be almost fully inserted and engaged. an opening (31) on the inner surface thereof, and in particular a connection member (2) of the protective cap adjacent to the opening (31) on its inner surface.
4) Engraving surface (2B) E-equipped with all the features 4? A cap according to any one of claims 1 to 3. 5. the coupling part (50) is provided on the fixing flange (6) which is structurally integrated with the device casing (2);
This fixing flange fixes the device (1) to the container, 11' to its mouth, e.g. a threaded cap, crimp ring, etc., and the connecting member (30) is formed by a protruding collar in the form of an annular disc. 5. Keyboard according to one of the claims 1 to 4, characterized in that this attachment is in particular in the covering cap (13). 6. The opposing surfaces (28, 29) are on both ends of the hook body (23) of the protective cap (17), and in particular the connecting member (30) belonging to the fixing flange (6) is provided on the side of the device axis (3). Camp according to any one of claims 2 to 5, characterized in that: l A predetermined breakage element (34) is provided on the protective cap (17), and in particular at least one web (35), in particular two 011 webs (35) arranged side by side.
This lateral web forms the hook body (23).
Claim 1 characterized in that the end face (19) belonging to the protective cap (17) is connected to the outer circumference (37) of the protective cap (17).
lt1λ The cap according to any one of items 1 to 6. a The planned breaking member (35) is attached to the connecting member (24, 2
5) and integrally formed with the associated structural component (17);
In particular, the planned failure point (34) is formed as a film hinge, and this hinge is connected to the connecting member (24, 25).
Any one of the patent scope from item 1 to item 7, characterized in that it is pivotally connected to the attached structural part (17).
cap as described in . 9. Connection member (25c) of corner cap (170)
) can be freely handled and moved along the dissection site 11 by means of a handle (43) that can be used to make a rupture, and is held by a locking member (44) provided at a rupture point. A cap according to any one of claims 1 to 8, characterized by: A 1C handle (43) is formed by one arm (45) of a bi-armed lever C46), and the other arm (23a)
is supporting the connecting member (25c)? ]l-Cap according to claim 9, characterized in that: 11. The handle (43) faces the outer periphery of the protective cap (17c) at k"7 while corresponding to the maximum swing stroke,
and in particular connected to the protective cap (t7c) via a hinge-like pivoting web (35c) formed integrally with the protective cap (170). The cap according to item 9 or 10. 12. The locking member (44) is attached to the inner surface of the handle (43) and/or
or in contact with the outer periphery of the protective cap (17c), and in particular through the intended destruction point (34c)'z, at least 1
A cap according to any one of claims 9 to 11, characterized in that the cap is connected to a plurality of pivoting webs (35c). 15. Any one of claims 9 to 12, characterized in that the locking member (44) is formed, in particular, as a strip-shaped break plate projecting upward from the handle (45). or the cap described in one of the above. 14. Connection member (25c) of protective cap (17c)
is provided with an abutment extension (47) projecting downwards, the abutment extension facing the opposite stop of the device, in particular the shoulder of the fixing flange (6C), in the holding state of the connecting member (25a). % 15 The contact camp (13) of the device is fixed flange (6)
[1.1] Any one of claims 4 to 14, characterized in that [1.1 completely covers the container through a particularly small gap and covers the container to prevent the container from opening One of the camps mentioned. 16.%, a fixing flange (6b) provided on the container for fixing it to the device (11)) (i, when formed as a threaded cap, this fixing flange (6b) and a covering cap that covers this fixing flange; (13b) are interlocked with each other in a manner that prevents rotation via the locking member (1) and/or in a form-complementary manner in the operating direction (42) of the device; It is formed by a protrusion (38) provided on the outer periphery (39), and this protrusion connects the four parts (
40) and is configured to shear when the covering cap (13'b) is rotated and/or manipulated after the attachment (Ib) has been installed on the container. 41) Range of IF gate provision The cap according to any one of items 1 to 15.