Convenient-to-assemble rubber plug for injector

Abstract

The utility model relates to the technical field of rubber plugs, in particular to an injector rubber plug convenient to assemble, a sealing ring, an annular groove and an anti-slip ring are arranged on the peripheral side of a rubber plug body, the annular groove is located between the anti-slip ring and the sealing ring, a positioning groove is formed in the upper end of the rubber plug body, a plurality of limiting grooves are formed in the peripheral side of the positioning groove, and the anti-slip ring is located in the annular groove. A limiting plate is arranged at the lower end of the push rod, a positioning block bonded in the positioning groove is arranged at the lower end of the limiting plate, and a plurality of limiting blocks bonded in the limiting groove are arranged on the peripheral side of the limiting plate. A positioning effect can be provided for the limiting plate on the rubber plug body, the rubber plug body can be conveniently installed at the bottom end of the push rod, and the assembly efficiency of the push rod can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber plugs, in particular to a rubber plug for a syringe which is easy to assemble. Background Art

[0002] As we all know, syringe stoppers usually refer to syringe accessories used in medical or laboratory applications. Stoppers are usually made of medical grade rubber or silicone to ensure compatibility with drugs or chemicals while maintaining their sealing properties. These stoppers can ensure that the drug does not leak when the syringe is used and can keep the internal environment clean and sterile. In the laboratory, these stoppers are also used to seal reaction vessels to prevent samples from leaking or being contaminated by the external environment.

[0003] Most of the existing rubber plugs are bonded to the bottom of the push rod during assembly. There is a lack of positioning structure between the rubber plug and the push rod, which makes it difficult to determine the position of the rubber plug at the bottom of the push rod, thereby reducing the installation efficiency of the rubber plug. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a rubber stopper for a syringe which is easy to assemble.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rubber plug for a syringe that is easy to assemble, comprising a rubber plug body and a push rod, the circumference of the rubber plug body is provided with a sealing ring, an annular groove and an anti-slip ring, the annular groove is located between the anti-slip ring and the sealing ring, the upper end of the rubber plug body is provided with a positioning groove, the circumference of the positioning groove is provided with a plurality of limit grooves, the lower end of the push rod is provided with a limit plate, the lower end of the limit plate is provided with a positioning block bonded to the inside of the positioning groove, and the circumference of the limit plate is provided with a plurality of limit blocks bonded to the inside of the limit groove.

[0008] In order to make the rubber plug body installed more firmly, the improvement of the utility model is that the limit plate is bonded to the upper end of the rubber plug body.

[0009] Furthermore, the present invention is improved in that four limiting grooves are provided on the peripheral side of the positioning groove, and four limiting blocks are provided on the peripheral side of the limiting plate.

[0010] Furthermore, the improvement of the utility model is that the limiting groove and the limiting block are both rectangular structures.

[0011] Furthermore, the present invention is improved in that a plurality of grooves are provided on the circumferential side of the anti-slip ring, anti-sliding blocks are provided inside the grooves, and the size of the grooves is larger than the anti-sliding blocks.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides a rubber stopper for a syringe that is easy to assemble and has the following beneficial effects:

[0014] The easy-to-assemble rubber plug for a syringe can provide a positioning function for the limiting plate on the rubber plug body through the cooperation of the positioning block and the positioning groove and the cooperation of the limiting block and the limiting groove, so that the rubber plug body can be conveniently installed at the bottom end of the push rod, and the assembly efficiency of the push rod can be improved;

[0015] When the plug body is in use, the anti-sliding block will be squeezed. At this time, the anti-sliding block is completely inside the groove, thereby increasing the friction between the plug body and the needle tube, improving the resistance of the plug body when moving, and thus ensuring the accuracy of the needle tube when extracting liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0018] Figure 3 For this utility model Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0019] In the figure: 1. rubber plug body; 2. push rod; 3. sealing ring; 4. anti-slip ring; 5. annular groove; 6. groove; 7. anti-sliding block; 8. limit groove; 9. limit plate; 10. limit block; 11. positioning groove; 12. positioning block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3The utility model is a rubber plug for a syringe that is easy to assemble, comprising a rubber plug body 1 and a push rod 2. The rubber plug body 1 is provided with a sealing ring 3, an annular groove 5 and an anti-slip ring 4 on its circumference. The annular groove 5 is located between the anti-slip ring 4 and the sealing ring 3. The upper end of the rubber plug body 1 is provided with a positioning groove 11. The circumference of the positioning groove 11 is provided with a plurality of limiting grooves 8. The lower end of the push rod 2 is provided with a limiting plate 9. The lower end of the limiting plate 9 is provided with a positioning block 12 bonded to the inside of the positioning groove 11. The circumference of the limiting plate 9 is provided with a plurality of bonding The limit block 10 connected to the inside of the limit groove 8 can provide a positioning effect for the limit plate 9 on the plug body 1 through the cooperation of the positioning block 12 and the positioning groove 11 as well as the cooperation of the limit block 10 and the limit groove 8, so that the plug body 1 can be easily installed at the bottom end of the push rod 2, and the assembly efficiency of the push rod 2 can be improved. When the push rod 2 is in use, the sealing ring 3 and the anti-slip ring 4 will both contact the inner wall of the needle tube, and the anti-slip ring 4 can bring resistance to the plug body 1 during movement, and the sealing ring 3 can ensure the sealing of the plug body 1 when in use.

[0022] In this structure, the limit plate 9 is bonded to the upper end of the plug body 1, four limit grooves 8 are provided on the surrounding side of the positioning groove 11, and four limit blocks 10 are provided on the surrounding side of the limit plate 9. The limit grooves 8 and the limit blocks 10 are both rectangular structures, which can make the plug body 1 installed more firmly.

[0023] Furthermore, a plurality of grooves 6 are provided on the circumferential side of the anti-slip ring 4, and an anti-sliding block 7 is provided inside the grooves 6. The size of the grooves 6 is larger than the anti-sliding block 7. When the plug body 1 is in use, the anti-sliding block 7 will be squeezed. At this time, the anti-sliding block 7 is completely inside the groove 6, thereby increasing the friction between the plug body 1 and the needle tube, and improving the resistance of the plug body 1 when moving, thereby ensuring the accuracy of the needle tube when extracting liquid.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rubber plug for a syringe that is easy to assemble, comprising a rubber plug body (1) and a push rod (2), characterized in that: The circumferential side of the plug body (1) is provided with a sealing ring (3), an annular groove (5) and an anti-slip ring (4); the annular groove (5) is located between the anti-slip ring (4) and the sealing ring (3); the upper end of the plug body (1) is provided with a positioning groove (11); the circumferential side of the positioning groove (11) is provided with a plurality of limiting grooves (8); the lower end of the push rod (2) is provided with a limiting plate (9); the lower end of the limiting plate (9) is provided with a positioning block (12) bonded to the inside of the positioning groove (11); the circumferential side of the limiting plate (9) is provided with a plurality of limiting blocks (10) bonded to the inside of the limiting groove (8).

2. A rubber stopper for a syringe that is easy to assemble according to claim 1, characterized in that: The limiting plate (9) is bonded to the upper end of the rubber plug body (1).

3. A rubber stopper for a syringe that is easy to assemble according to claim 2, characterized in that: Four limiting grooves (8) are provided on the peripheral side of the positioning groove (11), and four limiting blocks (10) are provided on the peripheral side of the limiting plate (9).

4. A rubber stopper for a syringe that is easy to assemble according to claim 3, characterized in that: The limiting groove (8) and the limiting block (10) are both rectangular structures.

5. The easy-to-assemble rubber stopper for a syringe according to claim 4, characterized in that: A plurality of grooves (6) are provided on the circumferential side of the anti-slip ring (4), an anti-slip block (7) is provided inside the groove (6), and the size of the groove (6) is larger than the anti-slip block (7).

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