Zipper locking device

Abstract

The utility model discloses a zipper locking device, and relates to the technical field of zippers. The zipper locking device comprises a bottom plate, a triangular connecting plate is fixedly connected to the upper surface of the bottom plate, a top plate is fixedly connected to the upper surface of the triangular connecting plate, a protrusion is fixedly connected to the lower surface of the top plate, a containing groove is formed in the left side surface of the protrusion, and a locking plate is rotationally connected between the inner walls of the upper side and the lower side of the containing groove. The bottom wall of the storage groove is fixedly connected with a spring storage groove, the bottom wall of the spring storage groove is fixedly connected with a first spring, the other end of the first spring is fixedly connected with the locking plate, a sliding groove is formed in the left side surface of the protrusion, a sliding block is slidably connected into the sliding groove, and the left side surface of the sliding block extends out of the sliding groove. And the left side surface of the sliding block is fixedly connected with a push plate, so that the zipper cannot be automatically opened during strenuous exercise, the problem of leakage caused by automatic opening of the zipper during exercise is avoided, and the firmness during zipper sealing is further guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of zippers, in particular to a zipper locking device. Background Art

[0002] Food packaging is an integral part of food commodities and one of the main projects in the food industry. It protects food and prevents it from being damaged by biological, chemical, and physical external factors during the circulation process from the factory to the hands of consumers. It can also have the function of maintaining the stable quality of the food itself. It facilitates the consumption of food and is the first to show the appearance of food and attract consumers. It has value beyond material cost. Therefore, the food packaging process is also an inseparable part of the food manufacturing system engineering. In order to avoid the problem of leakage of food inside the existing food packaging bag during use, a sealing zipper is set at the opening position of the bag.

[0003] A zipper usually consists of two belts, each with a fastener, which are used to connect the edges of an open food packaging bag. A sliding member can be used to pull the two fasteners into an interlocking position to close the opening. However, existing food packaging bags are inevitably subject to violent movement during transportation, which is likely to cause the chain head to slide during use, thereby unlocking the zipper and causing the food in the food packaging bag to leak. In view of this, we propose a zipper locking device. Utility Model Content

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a zipper locking device capable of solving the problem that a zipper head slides downward during movement.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a zipper locking device comprises a bottom plate, the upper surface of the bottom plate is fixedly connected to a triangular connecting plate, the upper surface of the triangular connecting plate is fixedly connected to a top plate, the lower surface of the top plate is fixedly connected to a protrusion, a left surface of the protrusion is provided with a storage groove, a locking plate is rotatably connected between the upper and lower inner walls of the storage groove, the bottom wall of the storage groove is fixedly connected to a spring storage groove, the bottom wall of the spring storage groove is fixedly connected to a first spring, the other end of the first spring is fixedly connected to the locking plate, a sliding groove is provided on the left surface of the protrusion, a sliding block is slidably connected to the inside of the sliding groove, the sliding groove extends from the left surface of the sliding block, the left surface of the sliding block is fixedly connected to a push plate, and an unlocking component is provided on the upper surface of the top plate.

[0006] Preferably, the unlocking assembly includes a sliding plate, which is slidably connected to the upper surface of the top plate, the upper surface of the top plate is provided with a through groove extending from its lower surface, the upper surface of the push plate is fixedly connected to the sliding plate through the through groove, the upper surface of the top plate is fixedly connected with a locking block, and the front side surface of the locking block is provided with a slot.

[0007] Preferably, a card slot is formed on the top wall of the slot, a pressing slot is formed on the upper surface of the sliding plate, and a movement slot is formed on the rear side surface of the sliding plate.

[0008] Preferably, the movement groove is communicated with the inside of the pressing groove, the inner wall of the pressing groove is slidably connected with a pressing plate, and the lower surface of the pressing plate is fixedly connected with a second spring.

[0009] Preferably, the lower end of the spring is fixedly connected to the bottom wall of the pressing groove, and the lower surface of the pressing plate is fixedly connected to a connecting rod.

[0010] Preferably, the lower end of the connecting rod slides through the interior of the moving groove, the lower end of the connecting rod is fixedly connected with a displacement plate, the upper surface of the displacement plate is fixedly connected with a triangular protrusion, and the triangular protrusion is adapted to the slot.

[0011] Preferably, the front surface of the sliding plate is fixedly connected to a mounting plate, and the lower surface of the mounting plate is slidably connected to a baffle.

[0012] Preferably, bolts are provided on the upper surface of the mounting plate, and threads on the lower ends of the bolts penetrate into the interior of the baffle.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) When the unlocking assembly is not operated to unlock, the zipper locking device uses a spring to tilt the locking plate, and then uses the locking plate to press against the chain teeth, so that the chain teeth cannot move backward and contact the triangular connecting plate, thereby preventing the zipper from sliding open by itself. When unlocking, the unlocking assembly drives the push plate to move forward, and then uses the push plate to squeeze the locking plate, so that the locking plate is retracted into the inside of the storage groove. When the locking plate is retracted, the spring is also compressed. After the locking plate is retracted, the chain teeth can move freely and the zipper can be opened. Through the above structure, the zipper can be prevented from opening by itself during strenuous exercise, avoiding the problem of leakage due to automatic opening of the zipper during exercise, and further ensuring the firmness of the zipper when sealed.

[0015] (2) When locking the zipper locking device, it is only necessary to press the pressing plate and then move it sideways until the triangular protrusion is inserted into the inner part of the slot. At the same time, since the pull ring connection often breaks, the zipper head cannot be used. At this time, the baffle plate can be replaced by twisting out the bolt. Through the above structure, not only can the sliding plate be locked and unlocked more conveniently, but also the pull ring connection can be replaced more conveniently when it is damaged, thereby avoiding the problem of unusable zipper due to pull ring damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a structural schematic diagram of a zipper locking device of the utility model;

[0018] Figure 2 This is a schematic diagram of the bottom of the top plate of the utility model;

[0019] Figure 3 This is a schematic diagram of the through slot of the utility model;

[0020] Figure 4 This is a cross-sectional schematic diagram of the pressing groove of the utility model;

[0021] Figure 5 for Figure 2 Enlarged view of point A in the middle.

[0022] Figure numerals: 1. bottom plate; 2. triangular connecting plate; 3. top plate; 4. protrusion; 5. storage groove; 6. locking plate; 7. spring storage groove; 8. first spring; 9. sliding groove; 10. sliding block; 11. push plate; 12. sliding plate; 13. through groove; 14. locking block; 15. slot; 16. card slot; 17. pressing groove; 18. moving groove; 19. pressing plate; 20. second spring; 21. connecting rod; 22. displacement plate; 23. triangular protrusion; 24. mounting plate; 25. baffle; 26. bolt. DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0024] See also Figure 1-5The utility model provides a technical solution: a zipper locking device, including a bottom plate 1, a triangular connecting plate 2 is fixedly connected to the upper surface of the bottom plate 1, a top plate 3 is fixedly connected to the upper surface of the triangular connecting plate 2, a protrusion 4 is fixedly connected to the lower surface of the top plate 3, a receiving groove 5 is provided on the left surface of the protrusion 4, a locking plate 6 is rotatably connected between the upper and lower inner walls of the receiving groove 5, a spring receiving groove 7 is fixedly connected to the bottom wall of the receiving groove 5, a first spring 8 is fixedly connected to the bottom wall of the spring receiving groove 7, the other end of the first spring 8 is fixedly connected to the locking plate 6, a sliding groove 9 is provided on the left surface of the protrusion 4, a sliding block 10 is slidably connected to the inside of the sliding groove 9, the sliding groove 9 extends from the left surface of the sliding block 10, a push plate 11 is fixedly connected to the left surface of the sliding block 10, and the top plate 3 is provided with a receiving groove 5. The upper surface of the zipper is provided with an unlocking assembly. When the unlocking assembly is not operated to unlock, the locking plate 6 is tilted by the first spring 8, and then the locking plate 6 is used to press the chain teeth, so that the chain teeth cannot move backward and contact the triangular connecting plate 2, thereby preventing the zipper from sliding open by itself. When unlocking, the push plate 11 is driven forward by the unlocking assembly, and then the locking plate 6 is squeezed by the push plate 11, so that the locking plate 6 is retracted into the inside of the storage groove 5. When the locking plate 6 is retracted, the first spring 8 will also be compressed. After the locking plate 6 is retracted, the chain teeth can move freely and then the zipper can be opened. Through the above structure, the zipper cannot be opened by itself during strenuous exercise, thereby avoiding the problem of leakage due to automatic opening of the zipper during exercise, and further ensuring the firmness of the zipper when sealed.

[0025] Further, the unlocking assembly includes a sliding plate 12, which is slidably connected to the upper surface of the top plate 3, and the upper surface of the top plate 3 is provided with a through slot 13 extending from its lower surface, the upper surface of the push plate 11 is fixedly connected to the sliding plate 12 through the through slot 13, and the upper surface of the top plate 3 is fixedly connected with a locking block 14, the front side surface of the locking block 14 is provided with a slot 15, and the top wall of the slot 15 is provided with a card slot 16, the upper surface of the sliding plate 12 is provided with a pressing slot 17, and the rear side surface of the sliding plate 12 is provided with a movement slot 18, and the movement slot 18 and the pressing slot 1 7 is connected to the inside, the inner wall of the pressing groove 17 is slidably connected with a pressing plate 19, the lower surface of the pressing plate 19 is fixedly connected with a second spring 20, the lower end of the second spring 20 is fixedly connected to the bottom wall of the pressing groove 17, the lower surface of the pressing plate 19 is fixedly connected with a connecting rod 21, the lower end of the connecting rod 21 slides through the inside of the moving groove 18, the lower end of the connecting rod 21 is fixedly connected with a displacement plate 22, the upper surface of the displacement plate 22 is fixedly connected with a triangular protrusion 23, the triangular protrusion 23 is adapted to the card slot 16, and the front surface of the sliding plate 12 is fixedly connected with The mounting plate 24 is slidably connected with a baffle 25 on the lower side surface of the mounting plate 24, and a bolt 26 is provided on the upper surface of the mounting plate 24. The lower end thread of the bolt 26 penetrates into the interior of the baffle 25. By pressing the pressing plate 19, the pressing plate 19 moves downward and compresses the second spring 20, which drives the connecting rod 21 to descend. When the connecting rod 21 descends, it drives the displacement plate 22 to move synchronously. When the displacement plate 22 moves, it drives the triangular protrusion 23 to move. After the triangular protrusion 23 moves, it disengages from the card slot 16, and then controls the sliding plate 12 to slide forward. The sliding plate 12 is smoothly used to drive the push plate 11 to move. At the same time, when locking, it is only necessary to press the pressing plate 19 and move it back and forth until the triangular protrusion 23 is inserted into the inside of the card slot 16. At the same time, since the pull ring connection often breaks, the zipper head cannot be used. At this time, the baffle 25 can be replaced by twisting out the bolt 26. Through the above structure, not only can the sliding plate 12 be locked and unlocked more conveniently, but also the pull ring connection can be replaced more conveniently when it is damaged, avoiding the problem of unusable due to damage to the pull ring.

[0026] Working principle: when the unlocking assembly is not operated to unlock, the first spring 8 is used to make the locking plate 6 in an inclined state, and then the locking plate 6 is used to press the chain teeth, so that the chain teeth cannot move backward and contact the triangular connecting plate 2, thereby preventing the zipper from sliding open by itself. When unlocking, the unlocking assembly drives the push plate 11 to move forward, and then the push plate 11 is used to squeeze the locking plate 6, so that the locking plate 6 is retracted into the storage groove 5. When the locking plate 6 is retracted, the first spring 8 will also be compressed. After the locking plate 6 is retracted, the chain teeth can move freely and the zipper can be opened. By pressing the pressing plate 19, the pressing plate 19 moves downward while Compressing the second spring 20 will drive the connecting rod 21 to descend. When the connecting rod 21 descends, it will synchronously drive the displacement plate 22 to move. When the displacement plate 22 moves, it drives the triangular protrusion 23 to move. After the triangular protrusion 23 moves, it will disengage from the slot 16. Then, the sliding plate 12 can be controlled to slide forward to smoothly drive the push plate 11 to move. At the same time, when locking, it is only necessary to press the pressing plate 19 and move it back and forth until the triangular protrusion 23 is stuck in the inside of the slot 16. At the same time, since the pull ring connection often breaks, the zipper head cannot be used. At this time, the baffle 25 can be replaced by twisting out the bolt 26.

[0027] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A zipper locking device, comprising a bottom plate (1), characterized in that: The upper surface of the bottom plate (1) is fixedly connected with a triangular connecting plate (2), the upper surface of the triangular connecting plate (2) is fixedly connected with a top plate (3), the lower surface of the top plate (3) is fixedly connected with a protrusion (4), the left surface of the protrusion (4) is provided with a receiving groove (5), the upper and lower inner walls of the receiving groove (5) are rotatably connected with a locking plate (6), the bottom wall of the receiving groove (5) is fixedly connected with a spring receiving groove (7), the bottom wall of the spring receiving groove (7) is fixedly connected with a first spring (8), the other end of the first spring (8) is fixedly connected with the locking plate (6), the left surface of the protrusion (4) is provided with a sliding groove (9), the inside of the sliding groove (9) is slidably connected with a sliding block (10), the left surface of the sliding block (10) extends out of the sliding groove (9), the left surface of the sliding block (10) is fixedly connected with a push plate (11), and the upper surface of the top plate (3) is provided with an unlocking component.

2. A zipper locking device according to claim 1, characterized in that: The unlocking assembly comprises a sliding plate (12), the sliding plate (12) is slidably connected to the upper surface of the top plate (3), the upper surface of the top plate (3) is provided with a through groove (13) extending from the lower surface thereof, the upper surface of the push plate (11) is fixedly connected to the sliding plate (12) via the through groove (13), the upper surface of the top plate (3) is fixedly connected with a locking block (14), and the front side surface of the locking block (14) is provided with a slot (15).

3. A zipper locking device according to claim 2, characterized in that: The top wall of the slot (15) is provided with a card slot (16), the upper surface of the sliding plate (12) is provided with a pressing slot (17), and the rear side surface of the sliding plate (12) is provided with a moving slot (18).

4. A zipper locking device according to claim 3, characterized in that: The moving groove (18) is communicated with the inside of the pressing groove (17); the inner wall of the pressing groove (17) is slidably connected with a pressing plate (19); and the lower surface of the pressing plate (19) is fixedly connected with a second spring (20).

5. A zipper locking device according to claim 4, characterized in that: The lower end of the second spring (20) is fixedly connected to the bottom wall of the pressing groove (17), and the lower surface of the pressing plate (19) is fixedly connected to a connecting rod (21).

6. A zipper locking device according to claim 5, characterized in that: The lower end of the connecting rod (21) slides into the interior of the moving groove (18), the lower end of the connecting rod (21) is fixedly connected to a displacement plate (22), the upper surface of the displacement plate (22) is fixedly connected to a triangular protrusion (23), and the triangular protrusion (23) is adapted to the clamping groove (16).

7. A zipper locking device according to claim 2, characterized in that: The front surface of the sliding plate (12) is fixedly connected to a mounting plate (24), and the lower surface of the mounting plate (24) is slidably connected to a baffle (25).

8. A zipper locking device according to claim 7, characterized in that: The upper surface of the mounting plate (24) is provided with a bolt (26), and the lower end of the bolt (26) is threadedly inserted into the interior of the baffle (25).

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