Cassette bottle positioning and mounting assembly

Abstract

The utility model discloses a clamping type bottle positioning and mounting assembly, which relates to the technical field of injection pens and comprises a through hole and an open slot which are arranged in an upper pen shell and used for being matched with a push rod assembly to move, a clamping cylinder is elastically connected in a lower pen shell, and a clamping type bottle is clamped in the clamping cylinder in a limiting mode. The clamping cylinder is used for enabling the position of the clamping bottle to be matched with the position of the through hole and the position of the open groove, a positioning groove is formed in the lower pen shell, and a positioning piece clamped with the positioning groove in a positioning mode is installed on the clamping cylinder. Through the design of the first kidney-shaped wafer, the second kidney-shaped wafer and the limiting piece, the positions of the clamping cylinder and the clamping type bottle can coincide and correspond to the moving position of a push rod assembly in the automatic injection pen, and installation and positioning of the clamping type bottle are achieved; meanwhile, the clamping cylinder and the clamping bottle can stably move in the lower pen shell in the fixed direction when being pushed by the push rod assembly in the later period through cooperation with the arrangement of the positioning groove and the positioning piece, and the movement stability of the clamping bottle is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection pen technical field, specifically relates to cassette bottle positioning installation component. BACKGROUND

[0002] Injection pen is the device that diabetes patient is used to inject insulin, and the existing injection pen includes manual injection pen and automatic injection pen, wherein, the manual injection pen is after taking out the rubber plug that is equipped with the outside of needle, with the needle to stab into the human body subcutaneously, and then the button of the rear end of injection pen is pressed to drive the push rod to move, the driving mechanism in the injection pen is connected to push the piston in the needle tube to move, and the medicament in the needle tube is injected into the human body through the needle; and the automatic injection pen is to release the locking of the push rod assembly of the internal force storage, so that the push rod assembly can restore the original position in turn, and move the cassette bottle in turn, so that the needle can stab into the human body subcutaneously, and then the other push rod assembly is used to push the liquid medicine in the cassette bottle, and the automatic injection is completed.

[0003] In the above-mentioned automatic injection pen, the cassette bottle and the liquid medicine in the cassette bottle need to be pushed in turn, and the stability of the cassette bottle during movement needs to be ensured, therefore, a cassette bottle positioning installation component for automatic injection pen is needed to solve the above-mentioned problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at designing a cassette bottle positioning installation component to solve the problem of ensuring the stability of the cassette bottle during movement in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned utility model purposes, the utility model provides the following technical scheme:

[0006] The cassette bottle positioning installation component includes a through hole and a slot in the upper pen shell for cooperating with the movement of the push rod assembly, and an elastic connection is provided between the lower pen shell and a cartridge, the cartridge is limited and clamped with a cassette bottle, and the position of the cassette bottle is matched with the position of the through hole and the position of the slot, through the above-mentioned structure design, the position of the cartridge and the cassette bottle is matched with the movement position of the push rod assembly in the upper pen shell, and the positioning of the position of the cartridge and the cassette bottle is realized.

[0007] A positioning groove is provided in the lower pen shell, and a positioning piece is installed on the cartridge and is positioned and clamped with the positioning groove, through the above-mentioned structure design, the cartridge and the cassette bottle are moved directionally in the lower pen shell, and the stability of the movement of the cassette bottle is ensured.

[0008] Preferably, the end of the cartridge is fixed with a first waist round sheet, the end of the bottle is fixed with a second waist round sheet matched with the first waist round sheet, the cartridge is elastically connected with a limiting sheet limited and matched with the first waist round sheet and the second waist round sheet, the limiting sheet and the slot are arranged at 90°, the center of the bottle corresponds to the through hole, the shapes of the first waist round sheet and the second waist round sheet are matched with the shapes between the two groups of slots, the positions of the first waist round sheet and the second waist round sheet are limited by the limiting sheet, and the positions of the cartridge and the bottle are fixed, and always consistent with the moving direction of the push rod assembly in the upper pen shell.

[0009] Preferably, the inner side of the upper pen shell close to the lower pen shell is fixed with an abutting plate, and the slot and the through hole are arranged on the abutting plate; the limiting sheet and the second waist round sheet are closely matched with the abutting plate, and the abutting of the limiting sheet and the second waist round sheet by the abutting plate can ensure the normal pushing of the second waist round sheet, that is, the bottle, by the push rod assembly in the subsequent injection process, and the structure is compact and reasonable.

[0010] Preferably, the limiting sheet is symmetrically fixed to the end surface of a gasket, and the gasket is clamped to the outer surface of the end of the cartridge; the positioning sheet is fixed to a separation sheet, and the separation sheet is connected to the outer surface of the cartridge; the separation sheet and the gasket and the separation sheet and the inner wall of the lower pen shell are connected by springs; the cartridge and the bottle can reciprocate by the spring connection, and elastic connection is realized.

[0011] Preferably, the inner surface of the separation sheet is provided with an internal thread, and the surface of the cartridge is provided with an external thread matched with the internal thread; by arranging the internal thread and the external thread, the separation sheet can be stably arranged on the outer surface of the cartridge, and the separation sheet is also convenient to install and disassemble.

[0012] Preferably, the height of the external thread is equal to the height of the internal thread, avoiding large-scale arrangement of the external thread, enabling the separation sheet to be quickly moved to a specified position and then fixed by the thread, and improving the installation efficiency.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The cartridge and the bottle can be consistent with the moving position of the push rod assembly in the automatic injection pen by the design of the first waist round sheet, the second waist round sheet and the limiting sheet, the cartridge and the bottle are installed and positioned, the cartridge and the bottle can stably move along the fixed direction in the lower pen shell when being pushed by the push rod assembly in the later period, and the moving stability of the bottle is ensured.

[0015] The utility model discloses a design through internal thread and external thread, make the partition piece steady, and it is convenient to install and dismount, and the height of external thread is limited simultaneously, shorten the distance of rotation, improve the sliding distance, and then improve the installation efficiency of partition piece. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structure of injection pen front view section schematic drawing;

[0017] Figure 2 It is the structure of injection pen lower pen shell front view section schematic drawing;

[0018] Figure 3 It is the three-dimensional structure schematic diagram of the utility model;

[0019] Figure 4 It is the right side view schematic diagram of injection pen lower pen shell;

[0020] Figure 5 It is the structure of card type bottle installation of the utility model front view section schematic drawing;

[0021] Figure 6 It is the structure of injection pen upper pen shell left side view schematic diagram.

[0022] Mark in the drawing:

[0023] 110, lower pen shell;120, positioning groove;

[0024] 210, card barrel;211, first waist round bump;212, external thread;220, partition piece;221, positioning piece;222, internal thread;230, gasket;231, limiting piece;

[0025] 310, card type bottle;311, second waist round bump;

[0026] 410, upper pen shell;420, abutment plate;421, through -hole;422, slot. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the technical scheme in the utility model embodiment will be described clearly and completely below with the drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment.

[0028] Therefore, the following detailed description of the embodiment of the utility model is not intended to limit the scope of the claimed utility model, but only represents some embodiments of the utility model. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the protection of the utility model.

[0029] It should be noted that the embodiments in the utility model and the features and technical solutions in the embodiments can be combined with each other without conflict.

[0030] It should be noted that like reference numerals and letters refer to like items in the drawings, and thus once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0031] Embodiments of the utility model are:

[0032] Referring to Figures 1-6 As shown in the figure, the cassette bottle positioning and mounting assembly comprises a cassette 210, the cassette 210 is clamped in the lower pen shell 110 through a spring, the end of the cassette 210 is fixed with a first waist round sheet 211, the outer side of the first waist round sheet 211 abuts against a limiting sheet 231, the two groups of symmetrical limiting sheets 231 are both fixed on a gasket 230, the end of the cassette bottle 310 is fixed with a second waist round sheet 311 matched with the first waist round sheet 211, therefore the cassette bottle 310 can only be inserted into the inside of the cassette 210 along the direction aligned with the first waist round sheet 211, at this time the two sides of the second waist round sheet 311 are also limited and abutted by the limiting sheets 231;

[0033] After the lower pen shell 110 is threadedly connected with the upper pen shell 410, since the upper pen shell 410 is internally provided with a push rod assembly with a fixed position, the push rod assembly comprises a first push rod for pushing the liquid medicine in the cassette bottle 310 and a second push rod for pushing the cassette bottle 310, therefore the side of the upper pen shell 410 close to the lower pen shell 110 is fixed with an abutment plate 420, a through hole 421 matched with the first push rod is formed at the central position of the abutment plate 420, and symmetrical slotted holes 422 matched with the second push rod are formed on the outer side of the abutment plate 420;

[0034] In order to ensure that the first push rod and the second push rod can work accurately, the conditions that need to be met are that the shapes of the first waist round sheet 211 and the second waist round sheet 311 are matched with the shape formed between the two groups of slotted holes 422, at this time the limiting sheets 231 and the slotted holes 422 are arranged at 90°, and the limiting sheets 231 and the second waist round sheet 311 are both abutted on the surface of the abutment plate 420;

[0035] The outer surface of the cassette 210 is provided with an external thread 212, the inner surface of the partition sheet 220 is provided with an internal thread 222, under the action of the external thread 212 and the internal thread 222, the partition sheet 220 is fixed on the outer surface of the cassette 210, the height of the external thread 212 is equal to the height of the internal thread 222, the height of the external thread 212 is limited, the distance of rotation is shortened, the sliding distance is improved, and the installation efficiency of the partition sheet 220 is further improved;

[0036] The spacer 220 is connected with the gasket 230 by a group of springs, and the other side of the spacer 220 is connected with the inner wall of the lower pen shell 110 by another group of springs;

[0037] The surface of the spacer 220 is fixed with a positioning piece 221, and the inner wall of the lower pen shell 110 is provided with a positioning groove 120 matched with the positioning piece 221, so that the card barrel 210 and the card bottle 310 can only move in the direction of the positioning groove 120 in the lower pen shell 110, thereby ensuring the stability of the movement of the card bottle 310;

[0038] First, the gasket 230 is sleeved on the outer surface of the card barrel 210, and then the gasket 230 is moved to the position of the first waist round piece 211, and under the limiting action of the limiting piece 231 and the first waist round piece 211, the limiting piece 231 is abutted and fitted with the straight edge of the first waist round piece 211, thereby achieving the installation of the gasket 230;

[0039] Then, a group of springs are sleeved on the outer surface of the card barrel 210 and abutted with the gasket 230, and then the spacer 220 is sleeved on the outer surface of the card barrel 210 and moved to the outer thread 212, at this time, the spacer 220 is rotated, and under the action of the inner thread 222, the spacer 220 is fixedly installed;

[0040] Secondly, another group of springs are sleeved on the outer surface of the card barrel 210 until abutting with the spacer 220, and then the whole structure is installed into the lower pen shell 110, at this time, under the positioning action of the positioning piece 221 and the positioning groove 120, the installation of the card barrel 210 is realized;

[0041] Then, the card bottle 310 is inserted into the card barrel 210 under the action of the second waist round piece 311 and the limiting piece 231, at this time, the second waist round piece 311 and the first waist round piece 211 are completely overlapped;

[0042] Finally, the lower pen shell 110 is installed into the end of the upper pen shell 410 and is tightened under the action of the thread, at this time, the second waist round piece 311 and the limiting piece 231 are abutted and fitted with the abutting plate 420, and the limiting piece 231 and the slotted groove 422 are just at a 90° angle, so that the positioning installation of the card bottle 310 is realized.

[0043] In the description of the present application, it should be pointed out that the terms "upper", "lower" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship commonly understood by those skilled in the art, and such terms are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only used for differentiation, and cannot be understood as indicating or implying relative importance.

[0044] The above embodiments are only used to illustrate the technical solutions described in the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the above embodiments, the present application is not limited to the above specific embodiments, and any modification or equivalent replacement of the present application is possible. Any technical solution and improvement that does not deviate from the spirit and scope of the present application is included in the scope of the claims of the present application.

Claims

1. A canister positioning and mounting assembly characterized by, The upper pen shell (410) is internally provided with a through hole (421) and a slot (422) for matching the movement of the push rod assembly, the lower pen shell (110) is elastically connected with a clamping cylinder (210), the clamping cylinder (210) is limitedly clamped with a clamping bottle (310), and the clamping bottle (310) is adapted to the positions of the through hole (421) and the slot (422); the lower pen shell (110) is internally provided with a positioning groove (120), and the clamping cylinder (210) is provided with a positioning sheet (221) which is limitedly clamped with the positioning groove (120).

2. The carton bottle positioning mounting assembly of claim 1, wherein, The end of the clamping cylinder (210) is fixed with a first waist round sheet (211), the end of the clamping bottle (310) is fixed with a second waist round sheet (311) matched with the first waist round sheet (211), and the clamping cylinder (210) is elastically connected with a limiting sheet (231) limitedly clamped with the first waist round sheet (211) and the second waist round sheet (311); the limiting sheet (231) and the slot (422) are arranged at 90°, and the center of the clamping bottle (310) corresponds to the through hole (421).

3. The carton positioning and mounting assembly of claim 2, wherein, The inner side of the upper pen shell (410) close to the lower pen shell (110) is fixed with an abutting plate (420), and the slot (422) and the through hole (421) are arranged on the abutting plate (420); the limiting sheet (231) and the second waist round sheet (311) are closely clamped with the abutting plate (420).

4. The carton positioning and mounting assembly of claim 3, wherein, The limiting sheet (231) is symmetrically fixed to the end face of a gasket (230), and the gasket (230) is clamped on the outer surface of the clamping cylinder (210); the positioning sheet (221) is fixed on a partition sheet (220), and the partition sheet (220) is connected to the outer surface of the clamping cylinder (210); the partition sheet (220) and the gasket (230) are connected by a spring, and the partition sheet (220) and the inner wall of the lower pen shell (110) are connected by a spring.

5. The carton positioning and mounting assembly of claim 4, wherein, The inner surface of the partition sheet (220) is provided with an inner thread (222), and the surface of the clamping cylinder (210) is provided with an outer thread (212) matched with the inner thread (222).

6. The carton positioning and mounting assembly of claim 5, wherein, The height of the outer thread (212) is equal to the height of the inner thread (222).

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