CN215585083U

CN215585083U - Stop collar of easy production

Info

Publication number: CN215585083U
Application number: CN202120515153.5U
Authority: CN
Inventors: 江瑞洋
Original assignee: Hubei Kelaide Medical Instrument Co Ltd
Current assignee: Hubei Kelaide Medical Instrument Co Ltd
Priority date: 2021-03-11
Filing date: 2021-03-11
Publication date: 2022-01-21
Anticipated expiration: 2031-03-11

Abstract

The utility model discloses a stop collar easy to produce, and belongs to the technical field of syringe accessories. Comprises a stop collar body, and a pushing groove, an upper convex collar and a locking boss which are arranged on the stop collar body; the limiting ring body is composed of a limiting ring and a pull ring on the upper side of the limiting ring, and the limiting ring and the pull ring are of a coaxial ring structure; the pushing groove is coaxially arranged at the upper side of the limiting ring, the upper side of the limiting ring is coaxially provided with a ring sleeve, and the ring sleeve is arranged between the lower central hole of the limiting ring 1 and the pushing groove; the upper convex ring is coaxially arranged at the top end of the peripheral surface of the pull ring, and the locking boss is coaxially arranged in the middle of an upper central hole of the pull ring; the pull ring is inserted and fixed in the ring sleeve; the lower side of the upper convex ring is abutted against the upper side of the ring sleeve. This stopper ring comprises two parts, and two parts all can adopt the plane mould to carry out the shaping, and the product cavity number is compared the sliding block mould and can be increased more than 3 times, can effectively promote the productivity.

Description

Stop collar of easy production

Technical Field

The utility model belongs to the technical field of syringe accessories, and particularly relates to a stop collar easy to produce.

Background

Currently, syringes are the most commonly used, and are one of the largest volume medical devices used. In recent years, disposable sterile syringes have become popular for the control of iatrogenic infectious diseases and to avoid cross-contamination and other adverse effects. However, the existing disposable syringes have the defects of intact use, reusability, no safety device, exposed needle after injection and the like. On one hand, the disposable syringe is easy to be utilized by the heart molecules, and the disposable syringe which is discarded after being used is reused, so that the transmission and cross infection of viruses are easily caused; on the other hand, the needle after injection is still remained outside, which not only brings inconvenience to the carrying and destroying of the garbage in the injector relative to the sharpness degree of the needle, but also often happens that the needle tip is exposed to injure the user carelessly. Many countries have passed legislation that emphasizes the necessity of using safe self-destructive syringes.

The patent with application number CN201510039595.6 discloses a stop gear of needle head seat in retraction formula safety syringe, including setting up the spacing unit one that is used for restricting syringe needle seat rebound between cylinder and syringe needle seat and setting up the spacing unit two that is used for restricting syringe needle seat rebound between cylinder and syringe needle seat, the cylinder inside wall on have a convex shoulder, the convex shoulder downside has the spacing portion that stretches out downwards, spacing unit two including spacing portion and the stopper ring that is located the cylinder, the stopper ring on have and be annular expansion portion, the expansion portion be located between spacing portion and the cylinder lateral wall, the expansion portion supports and leans on the spacing portion, spacing portion inwards buckle and support and lean on the syringe needle seat, the expansion portion supports and leans on the cylinder inside wall, interference fit between spacing portion, expansion portion and the cylinder.

The stop collar (part 3 in the prior art) is of a step-shaped cylindrical structure, a pushing groove is arranged on the step surface of the stop collar, an upper convex ring is arranged at the top of the stop collar, and a locking boss is arranged in the stop collar. The applicant finds that the forming is complex, the forming needs to be carried out by adopting a sliding block die (the forming is difficult), the forming die is complex in structure and the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the embodiment of the utility model provides the stop collar which is easy to produce, the stop collar consists of two parts, the two parts can be molded by adopting a plane die, the number of cavities of a product can be increased by more than 3 times compared with that of a sliding block die, and the productivity can be effectively improved; meanwhile, the injection molding of the plane die, the manufacturing of the die and the maintenance of the die are simple. The technical scheme is as follows:

the embodiment of the utility model provides a stop collar easy to produce, which comprises a stop collar body, and a pushing groove 12, an upper convex collar 21 and a locking boss 22 which are arranged on the stop collar body; the stop collar body is composed of a limit collar 1 and a pull ring 2 on the upper side of the limit collar 1, and the limit collar 1 and the pull ring 2 are of a coaxial circular ring structure; the pushing groove 12 is coaxially arranged at the upper side of the limiting ring 1, a ring sleeve 13 is coaxially arranged at the upper side of the limiting ring 1, and the ring sleeve 13 is arranged between a lower center hole 14 of the limiting ring 1 and the pushing groove 12; the upper convex ring 21 is coaxially arranged at the top end of the peripheral surface of the pull ring 2, and the locking boss 22 is coaxially arranged in the middle of an upper central hole 23 of the pull ring 2; the pull ring 2 is inserted and fixed in the ring sleeve 13; the underside of said upper collar 21 rests against the upper side of the collar 13.

In the second scheme of the embodiment of the present invention, the outer diameter of the pull ring 2 is gradually decreased from top to bottom, and the inner diameter of the ring sleeve 13 is gradually increased from bottom to top; the pull ring 2 is in interference fit with the ring sleeve 13.

In the first scheme of the embodiment of the utility model, a fixed convex ring 24 is arranged in the middle of the peripheral surface of the pull ring 2, and the fixed convex ring 24 and the pull ring 2 are coaxially arranged and are arc-shaped protrusions; the middle part of the inner wall of the ring sleeve 13 is provided with a ring groove 15 matched with the fixed convex ring 24, and the ring groove 15 and the ring sleeve 13 are coaxially arranged; the outer diameter of the lower part of the circumferential surface of the pull ring 2 is gradually reduced from top to bottom; when the pull ring 2 is inserted into the ring sleeve 13, the fixing convex ring 24 is embedded into the ring groove 15.

In the embodiment of the present invention, the inner groove surface of the pushing groove 12 is vertically disposed, and the outer groove surface thereof is obliquely disposed from top to bottom.

The locking boss 22 in the embodiment of the present invention is composed of a plurality of locking flaps which are uniformly distributed, and the plurality of locking flaps are distributed in a circular ring shape.

Specifically, the number of the locking flaps in the embodiment of the present invention is three.

Preferably, the locking flaps in the embodiments of the present invention are disposed obliquely upward from outside to inside.

Preferably, the outer diameter of the upper portion of the upper protruding ring 21 in the embodiment of the present invention is a slope boss gradually increasing from top to bottom.

Wherein, the upper end of the peripheral surface of the spacing ring 1 in the embodiment of the utility model is coaxially provided with a lower convex ring 16.

The technical scheme provided by the embodiment of the utility model has the following beneficial effects: the embodiment of the utility model provides a stop collar easy to produce, which is composed of two parts, wherein the two parts can be molded by adopting a plane die, the number of cavities of a product can be increased by more than 3 times compared with that of a sliding block die, and the productivity can be effectively improved; meanwhile, the injection molding of the plane die, the manufacturing of the die and the maintenance of the die are simple.

Drawings

FIG. 1 is an exploded view of a stop collar of option one that is easy to manufacture;

FIG. 2 is an exploded view of a stop collar of option two that is easy to manufacture;

FIG. 3 is a state diagram of a stop collar that is easy to manufacture and is provided by an embodiment of the present invention;

fig. 4 is a dimensional drawing of a stop collar of solution one, which is easy to produce.

In the figure: 1, a limiting ring and 2 pull rings;

12 pushing grooves, 13 ring sleeves, 14 lower center holes, 15 ring grooves and 16 lower convex rings;

21 upper convex ring, 22 locking convex plate, 23 upper central hole, 24 fixing convex ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1-4, the embodiment of the present invention provides a stopper ring easy to produce, which includes a stopper ring body, a pushing groove 12 (for limiting by matching with a limiting portion on a syringe), an upper convex ring 21 (for matching with a needle base), a locking boss 22 (for matching with a tenon), and the like. The structure is basically the same as that of the existing stop collar, and the difference is that: in order to facilitate processing, the split structure is adopted; the stop collar body in this embodiment is composed of a stop collar 1 (fitting with the syringe) and a pull ring 2 (fitting with the needle base) on the upper side thereof, and the stop collar 1 and the pull ring 2 are coaxially arranged in a circular structure. The pushing groove 12 is coaxially arranged on the upper side of the limiting ring 1 (close to the outer edge of the limiting ring 1), the upper side of the limiting ring 1 is coaxially provided with a ring sleeve 13 (in a ring column structure, the inner diameter of the ring sleeve is larger than that of the lower center hole 14), and the ring sleeve 13 is arranged between the lower center hole 14 of the limiting ring 1 and the pushing groove 12. Wherein, the upper convex ring 21 is coaxially arranged at the top end of the circumferential surface of the pull ring 2, and the locking boss 22 (which is of an annular structure and can pass through and be hooked on the tenon) is coaxially arranged at the middle part of an upper central hole 23 of the pull ring 2. The pull ring 2 is inserted and fixed in the ring sleeve 13. Wherein the lower side of the upper collar 21 rests against the upper side of the collar 13. Preferably, the inner diameter of the lower central hole 14 is smaller than the inner diameter of the upper central hole 23, and the outer diameter of the upper protruding ring 21 is larger (slightly larger) than the outer diameter of the ring sleeve 13.

Referring to fig. 2, in the second embodiment of the present invention, the outer diameter of the pull ring 2 is gradually decreased from top to bottom to form a tapered structure, and the inner diameter of the ring sleeve 13 is gradually increased from bottom to top to form a tapered hole; the pull ring 2 is in interference fit with the ring sleeve 13 to ensure that the limiting ring 1 and the pull ring 2 are fixed and convenient to combine.

Referring to fig. 1 and 3, in a first (preferred) solution in the embodiment of the present invention, a fixing convex ring 24 is disposed in the middle of the circumferential surface of the pull ring 2, and the fixing convex ring 24 is disposed coaxially with the pull ring 2 and is an arc-shaped protrusion; the middle part of the inner wall of the ring sleeve 13 is provided with a ring groove 15 (arc groove) matched with the fixed convex ring 24, and the ring groove 15 and the ring sleeve 13 are coaxially arranged. The outer diameter of the lower part of the circumferential surface of the pull ring 2 is gradually reduced from top to bottom, and the outer diameters of the upper parts of the pull ring are the same; the inner diameter of the ring sleeve 13 is the same and is slightly larger than the outer diameter of the pull ring 2. When the pull ring 2 is inserted into the ring sleeve 13, the fixing convex ring 24 is embedded into the ring groove 15, so that the assembly is facilitated and the stabilizing effect is ensured. Referring to fig. 4, the outer diameter N of the ring groove 15 is slightly larger than the outer diameter W of the fixing protrusion ring 24, and the outer diameter M of the lower side of the pull ring 2 is smaller than the inner diameter N of the ring sleeve 13.

Preferably, the tab 2 of the embodiment of the present invention is rounded at the outer edge of the lower side and the collar 13 is rounded at the inner edge of the upper side, so that the tab 2 is conveniently installed in the collar 13.

Referring to fig. 1-4, the pushing groove 12 of the embodiment of the present invention has an inner groove surface vertically disposed and an outer groove surface obliquely disposed from top to bottom, similar to the conventional structure.

The locking boss 22 in the embodiment of the present invention is formed by a plurality of locking flaps (arranged at intervals and located on the same horizontal plane) which are uniformly distributed, and the plurality of locking flaps are distributed in a circular ring shape. Because the pull ring 2 is made by adopting a plane die, a more complex structure can be prepared, and not only can the trafficability characteristic be ensured, but also the fixing effect can be ensured.

Preferably, the locking flap in the embodiment of the present invention is disposed obliquely upward (the inclination angle is preferably less than or equal to 45 °) from outside to inside to ensure the stable effect with the limiting protrusion. Since the tab 2 is made using a flat die, a more complex structure can be made.

Preferably, referring to fig. 1-4, upper collar 21 in the present embodiment is a tapered structure with a ramp of increasing outer diameter of the upper portion from top to bottom for ease of insertion into the needle holder.

Referring to fig. 1-4, the upper end of the circumferential surface of the retainer ring 1 in the embodiment of the present invention is coaxially provided with a lower protruding ring 16, which facilitates the insertion and removal of the retainer portion of the cylinder.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A stop collar easy to produce comprises a stop collar body, and a pushing groove (12), an upper convex ring (21) and a locking boss (22) which are arranged on the stop collar body; the stop collar is characterized in that the stop collar body is composed of a limit collar (1) and a pull ring (2) on the upper side of the limit collar, and the limit collar (1) and the pull ring (2) are of a coaxial ring structure; the pushing groove (12) is coaxially arranged on the upper side of the limiting ring (1), a ring sleeve (13) is coaxially arranged on the upper side of the limiting ring (1), and the ring sleeve (13) is arranged between a lower center hole (14) of the limiting ring (1) and the pushing groove (12); the upper convex ring (21) is coaxially arranged at the top end of the peripheral surface of the pull ring (2), and the locking boss (22) is coaxially arranged in the middle of an upper central hole (23) of the pull ring (2); the pull ring (2) is inserted and fixed in the ring sleeve (13); the lower side of the upper convex ring (21) is propped against the upper side of the ring sleeve (13).

2. Easy-to-produce stop collar according to claim 1, characterized in that the outer diameter of the pull ring (2) is gradually decreasing from top to bottom and the inner diameter of the collar (13) is gradually increasing from bottom to top; the pull ring (2) is in interference fit with the ring sleeve (13).

3. The easily produced stop collar according to claim 1, characterized in that a fixed convex ring (24) is arranged in the middle of the circumference of the pull ring (2), the fixed convex ring (24) and the pull ring (2) are coaxially arranged and are arc-shaped protrusions; the middle part of the inner wall of the ring sleeve (13) is provided with a ring groove (15) matched with the fixed convex ring (24), and the ring groove (15) and the ring sleeve (13) are coaxially arranged; the outer diameter of the lower part of the peripheral surface of the pull ring (2) is gradually reduced from top to bottom; when the pull ring (2) is inserted into the ring sleeve (13), the fixed convex ring (24) is embedded into the ring groove (15).

4. Easy-to-produce stop collar according to claim 1, characterized in that the inner groove surface of the extrusion groove (12) is arranged vertically and its outer groove surface is arranged obliquely from top to bottom.

5. Easy-to-produce stop collar according to claim 1, characterized in that the locking boss (22) is formed by a plurality of evenly distributed locking flaps, which are distributed in a circular ring shape.

6. Easy-to-produce stop collar according to claim 5, characterized in that the number of locking flaps is three.

7. The easy-to-manufacture stop collar according to claim 5, wherein the locking flaps are arranged obliquely upwards from the outside to the inside.

8. Easy-to-produce stop collar according to claim 1, characterized in that the upper protruding ring (21) is a sloping cam with an upper outer diameter increasing from top to bottom.

9. Easy-to-produce stop collar according to claim 1, characterized in that the upper end of the circumference of the stop collar (1) is provided coaxially with a lower protruding ring (16).