Snap-on combination cap anti-loosening device

Abstract

The utility model relates to anti -loosening device technical field discloses a kind of occlusal type combination cap anti-loosening device, including lock cylinder and lock sleeve, the bottom end of lock cylinder is connected with lock sleeve by connecting component, the connecting component includes outer thread and internal thread, the outer thread is arranged at the outer periphery of lock cylinder, the internal thread is arranged in the inner chamber of lock sleeve, the downside of the outer thread is provided with first clamping slot, the upside of the internal thread is provided with second clamping slot, and the first clamping slot and second clamping slot are adapted, the inner chamber of lock cylinder is provided with cap by clamping component, the cap of the utility model can be pressed tightly on syringe cone when syringe cone is inserted into lock sleeve, rely on compression rubber cap to play sealing effect, by first clamping slot and second clamping slot mutual occlusion, it can prevent the locking force of lock cylinder and lock sleeve not enough, syringe cone will open cap, increase the effect of sealing, solve the problem of reducing sealing effect in prior art.

Description

Technical Field

[0001] This utility model relates to the technical field of anti-loosening devices, and in particular to an anti-loosening device for a bite-type combination cap. Background Technology

[0002] The locking sleeve on the syringe tip, commonly known as a Luer locking cap, is a safety device used for pre-filled syringes. In addition, there are hard and soft needle caps and end caps specifically designed for syringe tips. These accessories are also used to improve the safety and protection of syringes.

[0003] In the prior art, a sealing element is provided inside the lock sleeve. The sealing element is pressed against the syringe cone to play a sealing role. If the locking force between the lock cylinder and the lock sleeve is insufficient, the syringe cone will push the sealing element open, reducing the sealing effect. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing an interlocking combination cap anti-loosening device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A locking cap anti-loosening device for a locking type includes a lock cylinder and a lock sleeve. The bottom end of the lock cylinder is connected to the lock sleeve through a connecting component. The connecting component includes an external thread and an internal thread. The external thread is disposed on the outer periphery of the lock cylinder, and the internal thread is disposed in the inner cavity of the lock sleeve. A first groove is provided on the lower side of the external thread, and a second groove is provided on the upper side of the internal thread. The first groove and the second groove are compatible with each other.

[0007] The inner cavity of the lock cylinder is fitted with a protective cap via a snap-fit ​​assembly.

[0008] Preferably, the locking assembly includes a first locking block and a second locking block, a groove is provided on one side of the cap, the first locking block is disposed in the inner cavity of the lock cylinder, the second locking block is disposed in the inner cavity of the groove, and the bottom of the first locking block is movable against the bottom of the inner cavity of the groove.

[0009] Preferably, the inner sides of both the first and second card blocks are provided with inclined surfaces, and the two inclined surfaces are adapted to each other.

[0010] Preferably, the cap is made of rubber.

[0011] Preferably, both the first and second slots are toothed.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention, through the design of internal and external threads, allows the lock cylinder and lock sleeve to be connected during use. Rotating the lock cylinder to connect the internal and external threads enables the first and second locking grooves to engage, preventing the lock cylinder and lock sleeve from loosening. Compared to existing technologies, this device, with its protective cap, presses the syringe cone tightly against it when the syringe tip is inserted into the lock sleeve, achieving a seal through compression. The engagement of the first and second locking grooves prevents insufficient locking force from causing the syringe tip to push the protective cap open, thus increasing the sealing effect and solving the problem of reduced sealing performance in existing technologies. Attached Figure Description

[0014] Figure 1 This is a cross-sectional schematic diagram of an interlocking combination cap anti-loosening device proposed in this utility model;

[0015] Figure 2 This is a schematic diagram of the locking sleeve and locking cylinder of an interlocking combination cap anti-loosening device proposed in this utility model.

[0016] In the diagram: 1. Lock cylinder; 2. Lock sleeve; 3. External thread; 4. Internal thread; 5. First slot; 6. Second slot; 7. Protective cap; 8. First locking block; 9. Second locking block; 10. Inclined surface; 11. Injection cone; 12. Groove. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Reference Figure 1 and Figure 2 A locking cap anti-loosening device for a locking type includes a lock cylinder 1 and a lock sleeve 2. The bottom end of the lock cylinder 1 is connected to the lock sleeve 2 through a connecting component. The connecting component includes an external thread 3 and an internal thread 4. The external thread 3 is disposed on the outer periphery of the lock cylinder 1, and the internal thread 4 is disposed in the inner cavity of the lock sleeve 2. A first groove 5 is provided on the lower side of the external thread 3, and a second groove 6 is provided on the upper side of the internal thread 4. The first groove 5 and the second groove 6 are compatible with each other.

[0019] The inner cavity of the lock cylinder 1 is fitted with a protective cap 7 via a snap-fit ​​assembly.

[0020] When in use, this device can connect the lock cylinder 1 and the lock sleeve 2 together. When the lock cylinder 1 is rotated to connect the internal thread 4 and the external thread 3, the first groove 5 and the second groove 6 can be engaged with each other to prevent the lock cylinder 1 and the lock sleeve 2 from loosening. Compared with the prior art, this device, through the setting of the protective cap 7, can press the protective cap 7 against the syringe cone when the injection cone 11 is inserted into the lock sleeve 2. The compression of the rubber protective cap 7 plays a sealing role. Through the interlocking of the first groove 5 and the second groove 6, it can prevent the locking force between the lock cylinder 1 and the lock sleeve 2 from being insufficient, and the syringe cone will push the protective cap 7 open, thereby increasing the sealing effect and solving the problem of reduced sealing effect in the prior art.

[0021] Furthermore, the snap-fit ​​assembly includes a first snap-fit ​​block 8 and a second snap-fit ​​block 9. A groove 12 is provided on one side of the protective cap 7. The first snap-fit ​​block 8 is disposed in the inner cavity of the lock cylinder 1, and the second snap-fit ​​block 9 is disposed in the inner cavity of the groove 12. The bottom of the first snap-fit ​​block 8 is in contact with the bottom of the inner cavity of the groove 12. With the first snap-fit ​​block 8 and the second snap-fit ​​block 9, when the protective cap 7 is installed in the lock cylinder 1, the protective cap 7 can be squeezed under the first snap-fit ​​block 8. The bottom of the first snap-fit ​​block 8 is in contact with the bottom of the inner cavity of the groove 12, preventing the protective cap 7 from being squeezed and causing the lock cylinder 1 to separate from the lock sleeve 2 when the injection cone 11 is inserted into the lock sleeve 2, thereby reducing the sealing performance of the protective cap 7 on the injection cone 11.

[0022] Furthermore, the inner sides of the first locking block 8 and the second locking block 9 are both provided with inclined surfaces 10, and the two inclined surfaces 10 are adapted to each other. By providing the inclined surfaces 10, the friction between the first locking block 8 and the second locking block 9 can be increased, preventing the first locking block 8 and the second locking block 9 from separating and reducing the sealing performance of the cap 7 on the injection cone 11.

[0023] Furthermore, the cap 7 is made of rubber. By making the cap 7 of rubber, the cap 7 has a certain degree of flexibility and can fit better.

[0024] Furthermore, both the first slot 5 and the second slot 6 are toothed. By setting both the first slot 5 and the second slot 6 to be toothed, when the lock cylinder 1 and the lock sleeve 2 are connected together by the internal thread 4 and the external thread 3, the toothed first slot 5 and the second slot 6 are engaged to prevent the locking force between the lock cylinder 1 and the lock sleeve 2 from being insufficient.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A locking cap anti-loosening device for interlocking type, comprising a lock cylinder (1) and a lock sleeve (2), characterized in that: The bottom end of the lock cylinder (1) is connected to the lock sleeve (2) through a connecting component. The connecting component includes an external thread (3) and an internal thread (4). The external thread (3) is disposed on the outer periphery of the lock cylinder (1), and the internal thread (4) is disposed in the inner cavity of the lock sleeve (2). A first groove (5) is provided on the lower side of the external thread (3), and a second groove (6) is provided on the upper side of the internal thread (4). The first groove (5) and the second groove (6) are compatible with each other. The inner cavity of the lock cylinder (1) is provided with a protective cap (7) through a snap-fit ​​assembly.

2. The anti-loosening device for a bite-type combination cap according to claim 1, characterized in that: The latching assembly includes a first latching block (8) and a second latching block (9). A groove (12) is provided on one side of the cap (7). The first latching block (8) is located in the inner cavity of the lock cylinder (1), and the second latching block (9) is located in the inner cavity of the groove (12). The bottom of the first latching block (8) moves against the bottom of the inner cavity of the groove (12).

3. The anti-loosening device for a bite-type combination cap according to claim 2, characterized in that: The inner sides of the first card block (8) and the second card block (9) are provided with inclined surfaces (10), and the two inclined surfaces (10) are adapted to each other.

4. The anti-loosening device for a bite-type combination cap according to claim 2, characterized in that: The protective cap (7) is made of rubber.

5. The anti-loosening device for a bite-type combination cap according to claim 1, characterized in that: Both the first slot (5) and the second slot (6) are toothed.

Images