Short-neck rubber plug and structure thereof for being matched with bottle

Abstract

The invention discloses a short-neck rubber plug and a structure thereof for being matched with a bottle. According to the technical scheme, the short-neck rubber plug comprises a crown part (1) and a neck part (2), a guiding part (3) is arranged at one end of the neck part (2), and a sealing loop (4) is arranged at the position where the neck part (2) is connected with the guiding part (3) in a protruding mode; the short-neck rubber plug further comprises the bottle (5), and a sealing ring (51) matched with the neck part (2) is arranged on the inner wall at the position of an opening of the bottom (5) in a surrounding mode. When the rubber plug is matched with the bottle, sealing is formed between the sealing ring and the neck part of the rubber plug and between the sealing loop and the inner wall of the opening of the bottle, so that double sealing is achieved between the rubber plug and the bottle, the sealing effect is improved, and plug jumping can be effectively avoided. By limiting the length of the neck part of the rubber plug, on one hand, S-shaped multi-arc sealing is formed between the sealing ring and the sealing loop so that the sealing effect can be improved; on the other hand, the length of the neck part of the rubber plug can be controlled within a reasonable range, the overall length of the rubber plug becomes small, and then raw materials are saved.

Description

technical field [0001] The invention relates to the field of medical packaging, more specifically, it relates to a short-neck rubber stopper and its matching structure with the bottle body. Background technique [0002] The medicinal rubber stopper is the sealing part of the bottled medicine. Currently, the widely used medicinal rubber stopper includes the crown of the rubber stopper on the upper part and the neck of the rubber stopper connected to it. In the opening of the bottle, the crown of the rubber stopper is pressed against the mouth of the bottle to achieve a seal. [0003] The Chinese patent with the application number 201310565613.5 discloses a medical disposable negative pressure blood collection tube rubber stopper, which consists of two parts, the rubber stopper crown and the rubber stopper neck. The rubber stopper neck protrudes downward and is arranged under the rubber stopper crown. In the center of the end face, the crown of the rubber plug is slightly lar...

AI Technical Summary

Problems solved by technology

[0003] The Chinese patent with the application number 201310565613.5 discloses a medical disposable negative pressure blood collection tube rubber stopper, which consists of two parts, the rubber stopper crown and the rubber stopper neck. The rubber stopper neck protrudes downward and is arranged under the rubber stopper crown. In the center of the end face, the crown of the rubber plug is slightly larger than the neck of the rubber plug, and at the junction of the crown of the rubber plug and the neck of the rubber plug, along the neck of the rubber plug, a circle of grooves is arranged on the crown of the rubber plug; The groove of the rubber crown and the neck of the rubber plug form a double pressure-holding effect. Although it is beneficial to enhance the negative pressure holding capacity of the blood collection tube, it can also play the role of preventing the plug from being retracted, but the sealing effect is determined by the neck of the rubber plug. The longer the neck of the rubber plug, the larger the contact area between the rubber plug and the mouth of the bottle, and the better the sealing performance, and vice versa; therefore, in order to enhance the sealing performance of the rubber plug, the suitable structure It is not effective to save raw materials when the length of the neck of the rubber plug needs to be enhanced. Therefore, a short-neck rubber plug that can reduce the length of the neck of the rubber plug and effectively seal is needed.

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