Lock warhead connecting structure of automatic opening and closing umbrella

Abstract

The utility model discloses a lock warhead connecting structure for automatically opening and closing an umbrella, which is mounted in a middle rod of the umbrella and comprises a core tube, a long-strip spring and a lock warhead, a pulley seat connected with an outer tube of the middle rod is arranged at the upper end of the core tube, and the lower end of the core tube is matched and inserted with the lock warhead. The lock warhead connecting structure of the automatic opening and closing umbrella can prevent the lock warhead from swinging in the downward moving process, and is better in stability and long in service life.

Description

Technical Field

[0001] This utility model relates to a locking spring connection structure for an automatic opening and closing umbrella, belonging to the field of umbrella technology. Background Technology

[0002] Umbrellas are a very common tool for sunshade or protection from rain and snow. For ease of operation, automatic umbrellas are now widely used. While most automatic umbrellas are easy to open, they require considerable force to close. To address this, an umbrella with a sliding automatic opening and closing structure, as disclosed in publication number CN110432614A, has been developed. This umbrella is equipped with an opening and closing component and an unlocking component. It contains a core tube, a long spring, and a cord within a central rod. The core tube is located inside the inner tube, with one end abutting against the locking spring and the other end connected to the outer tube. The long spring is also located inside the inner tube, with one end fixed to the core tube and the other end connected to the outer tube. The cord is located inside the core tube, with one end connected to the locking spring and the other end connected to the umbrella. When closing the umbrella, first unlock the locking bullet. Under the force of the closing spring, the locking bullet is pulled back to the umbrella surface by the rope. After the umbrella surface loses the tension of the locking bullet, it can be folded up. Then, manually pull the outer tube towards the sliding automatic opening and closing structure. During this process, the core tube pushes the locking bullet into the stabilizing seat, eventually reaching the bottom of the stabilizing seat and being locked by the hook plate. At this point, the locking bullet is locked by the hook plate, so the entire umbrella can remain folded. Because the existing core tube and locking bullet are in contact, the locking bullet and rope cannot be stably limited. During the process of the core tube pushing the locking bullet down into the stabilizing seat, the locking bullet has no effective limit and will swing, causing greater friction with the long spring, affecting the smoothness of closing the umbrella, and also easily causing the locking bullet and long spring to jam. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a locking head connection structure for automatic opening and closing of the umbrella. When closing the umbrella, the core tube pushes the locking head to move smoothly downward, preventing the locking head from swinging and causing large friction during the downward movement, thereby improving stability and service life, and overcoming the shortcomings of the prior art.

[0004] The technical solution of this utility model is: an automatic opening and closing umbrella locking head connection structure, which is installed inside the middle rod of the umbrella, including a core tube, a long spring, and a locking head. The upper end of the core tube is provided with a pulley seat that is connected to the outer tube of the middle rod, and the lower end is inserted into the locking head.

[0005] Furthermore, the cross-section of the locking bullet is stepped, and the upper end can be inserted into the core tube for mating.

[0006] Furthermore, the tip of the locking bullet has a chamfered structure.

[0007] Furthermore, the diameter of the locking bullet is not greater than the diameter of the core tube.

[0008] By implementing this utility model, when the umbrella is closed, the outer tube moves inward and slides down, causing the core tube to slide down synchronously. During this process, the long spring is compressed. After the core tube is inserted and engaged with the locking head, it pushes the locking head down and into the stabilizing seat to lock with the hook plate. The locking head slides down as a whole after being inserted with the core tube during the descent process, so it will not swing and will not have a large friction with the long spring, making the umbrella closing process smoother. Attached Figure Description

[0009] Figure 1 This is a perspective view of the present invention;

[0010] Figure 2 This is an internal sectional view of the present invention.

[0011] The diagram shows: core tube 1; long bar spring 2; locking spring head 3; pulley seat 4; chamfer structure 5. Detailed Implementation

[0012] Embodiments of this utility model: such as Figures 1 to 2 As shown, an automatic opening and closing umbrella locking mechanism is used in umbrellas with a sliding automatic opening and closing structure. It includes a core tube 1, a long spring 2, and a locking head 3 installed inside the central rod. The working principle of the sliding automatic opening and closing structure is described in detail in application CN110432614A, and will not be repeated here. In this application, the upper end of the core tube 1 is provided with a pulley seat 4 connected to the outer tube of the central rod, and the lower end is engaged with the locking head 3. The locking head 3 has a stepped cross-section, and its upper end can be inserted into the core tube 1 for engagement. The locking head is unlocked first when closing the umbrella. Locking head 3, together with core tube 1, is pulled back to the canopy by the rope under the tension of the canopy. After the canopy loses the tension of locking head 3, it can be folded up. Then, the outer tube is manually pulled towards the sliding sleeve automatic opening and closing structure. During this process, the long spring 2 is compressed. The upper end of locking head 3 is inserted into core tube 1 and slides down with core tube 1 into the stabilizing seat and locks with the hook plate. After locking head 3 is inserted into core tube 1 during the descent, it slides down as a whole, which can reduce swaying and thus avoid greater friction with long spring 2, making the closing process smoother.

[0013] As a preferred option, the top of the locking bullet 3 has a chamfered structure 5, which serves as a guide, allowing the upper end of the locking bullet 3 to enter the core tube 1 more smoothly for insertion.

[0014] As a preferred option, the diameter of the locking bullet 3 is not greater than the diameter of the core tube 1. During the downward movement of the locking bullet 3, it is not easy for it to come into contact with the long spring 2, thus it is not easy to wear out or separate from the core tube 1.

Claims

1. An automatic opening and closing umbrella locking mechanism, installed inside the umbrella's central rod, comprising a core tube, a long spring, and a locking mechanism, characterized in that: The upper end of the core tube is provided with a pulley seat that connects to the outer tube of the middle rod, and the lower end is engaged with the locking bullet head.

2. The locking head connection structure for automatic opening and closing of the parachute according to claim 1, characterized in that: The cross-section of the locking bullet is stepped, and the upper end can be inserted into the core tube to achieve a mating connection.

3. The locking head connection structure for automatic opening and closing of the parachute according to claim 2, characterized in that: The top of the locking head has a chamfered structure.

4. The locking head connection structure for automatic opening and closing parachute according to claim 2 or 3, characterized in that: The diameter of the locking bullet is not greater than the diameter of the core tube.

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