Novel internal spring structure

Abstract

The utility model discloses a novel internal spring structure which comprises a fixed rod, the fixed rod is connected with a movable rod, the left end of the fixed rod is connected with a plug through threads, a first spring is connected between the plug and a connecting piece, the connecting piece is connected into the fixed rod in a sliding mode, and a second spring is connected between the fixed rod and the movable rod. A second spring is connected between the connecting piece and the movable rod, the movable rod and the fixed rod are in sliding connection, and the length of the movable rod is larger than that of the fixed rod. According to the novel internal spring structure, the first spring and the second spring which are opposite in spiral direction are adopted, torsion generated when the two springs are compressed is opposite, so that the torsion neutralization effect is achieved, excessive spring force loss is avoided, and through reasonable matching of the outer diameters of the two springs, the acting force needed for umbrella folding can be reduced, umbrella folding operation is convenient, and the service life of the umbrella is prolonged. When the umbrella is unfolded, enough acting force can be provided through spring bounce, and it is guaranteed that the umbrella is unfolded in place.

Description

Technical Field

[0001] The utility model relates to the technical field of spring structures, in particular to a novel internal spring structure. Background Art

[0002] An automatic umbrella is an umbrella with an automatic opening function. Because it is easy to use, it is widely used in real life. However, the internal spring structure of the existing automatic umbrella mainly adopts a single spring to realize the automatic opening of the umbrella. When the single spring is actually used, when the spring force is large, the spring will become tighter and tighter when the umbrella is folded, resulting in a large umbrella folding force. When the spring force is small, it will cause the umbrella to be insufficient when it is opened to the top, resulting in the umbrella not being fully opened. Therefore, in view of the above problems, a new internal spring structure is designed to better meet the actual use needs. Summary of the invention

[0003] The purpose of the utility model is to provide a novel internal spring structure to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new internal spring structure, including a fixed rod, the fixed rod and the movable rod are interconnected, the left end of the fixed rod is interconnected with a plug through a thread, a first spring is connected between the plug and the connecting piece, the connecting piece is slidably connected to the fixed rod, and a second spring is connected between the connecting piece and the movable rod.

[0005] Preferably, the movable rod is slidably connected to the fixed rod, and the length of the movable rod is greater than that of the fixed rod. The sliding action between the movable rod and the fixed rod can provide basic guarantee for the normal folding of the umbrella.

[0006] Preferably, a limiting block is fixed on the movable rod, and the limiting block contacts the fixed rod to achieve a limiting effect. The limiting block can prevent the movable rod from being separated from the fixed rod, thereby ensuring the integrity of the device.

[0007] Preferably, a protrusion is fixed to the right end of the plug, and the protrusion and the first spring are nested and connected, and the positioning of the first spring can be achieved through the nesting of the protrusion and the first spring.

[0008] Preferably, a convex shaft is fixed on the left end of the connecting member, and the convex shaft and the first spring are nested in connection, and a sleeve is fixed on the right end of the connecting member, and the sleeve and the second spring are nested in connection, and the convex shaft and the sleeve facilitate positioning and installation of the first spring and the second spring.

[0009] Preferably, the second spring and the movable rod are nested and connected, and the spiral direction of the second spring is opposite to that of the first spring, and the diameter of the second spring is smaller than the diameter of the first spring. By limiting the spiral directions of the first spring and the second spring, the torsion neutralization of the first spring and the second spring can be achieved to ensure the normal operation of the device.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the new internal spring structure adopts a first spring and a second spring with opposite spiral directions, so that the two springs can generate opposite torques when compressed, thereby achieving a torque neutralization effect and avoiding excessive spring force loss, and through a reasonable combination of the outer diameters of the two springs, the force required to fold the umbrella can be reduced, facilitating the umbrella folding operation, and sufficient force can be provided by the spring bounce when the umbrella is opened to ensure that the umbrella is opened in place. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the front cross-sectional structure of the fixing rod of the utility model;

[0012] Figure 2 This is a front view structural diagram of the fixing rod of the utility model;

[0013] Figure 3 This is a schematic diagram of the structure of the movable rod and the second spring of the utility model;

[0014] Figure 4 For this utility model Figure 3 The enlarged structural diagram at A in the middle;

[0015] Figure 5 It is a schematic diagram of the cross-sectional structure of the first spring and the second spring of the utility model.

[0016] In the figure: 1, fixed rod; 2, movable rod; 201, limit block; 3, plug; 301, convex block; 4, first spring; 5, connecting piece; 501, convex shaft; 502, sleeve; 6, second spring. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figure 1-Figure 5The utility model provides a technical solution: a new internal spring structure, including a fixed rod 1, the fixed rod 1 and the movable rod 2 are connected to each other, the left end of the fixed rod 1 is connected to the plug 3 through a thread, a first spring 4 is connected between the plug 3 and the connecting member 5, the connecting member 5 is slidably connected to the fixed rod 1, and a second spring 6 is connected between the connecting member 5 and the movable rod 2.

[0019] The movable rod 2 is slidably connected to the fixed rod 1, and the length of the movable rod 2 is greater than that of the fixed rod 1; a limit block 201 is also fixed on the movable rod 2, and the limit block 201 contacts the fixed rod 1 to achieve a limit effect; a convex block 301 is fixed to the right end of the plug 3, and the convex block 301 and the first spring 4 are nested; a convex shaft 501 is fixed to the left end of the connecting member 5, and the convex shaft 501 and the first spring 4 are nested, and a sleeve 502 is fixed to the right end of the connecting member 5, and the sleeve 502 and the second spring 6 are nested; the second spring 6 and the movable rod 2 are nested, and the spiral direction of the second spring 6 is opposite to that of the first spring 4, and the diameter of the second spring 6 is smaller than the diameter of the first spring 4;

[0020] When using new internal spring structures, such as Figure 1-Figure 4 As shown, first, the entire device is installed. The movable rod 2 and the fixed rod 1 can be assembled by nesting and sliding them together. Then, the sleeve 502 and the second spring 6 are nested. The second spring 6 can be installed by coordinating the nesting effect between the second spring 6 and the movable rod 2 and the sliding effect between the connecting member 5 and the fixed rod 1. Finally, the first spring 4 is positioned and assembled by nesting the convex shaft 501 and the first spring 4 and the convex block 301 and the first spring 4. Finally, the entire device can be assembled by threading the plug 3 and the fixed rod 1. When the plug 3 and the fixed rod 1 are assembled, the plug 3 will have a certain effect on the first spring 4 and the second spring 6. The pressure makes the first spring 4 and the second spring 6 in a slightly contracted state after the whole device is assembled. After the device is assembled, when the umbrella contracts to make the movable rod 2 slide into the fixed rod 1, the first spring 4 and the second spring 6 are forced to contract synchronously. Since the spiral directions of the first spring 4 and the second spring 6 are opposite, the torsion generated when the first spring 4 and the second spring 6 contract can be neutralized, thereby reducing the consumption of spring force and effectively saving the force required for folding the umbrella. When opening the umbrella, the elastic force of the first spring 4 and the second spring 6 can provide force for the reset of the movable rod 2 to ensure that the umbrella is opened in place. This is the working principle of the new internal spring structure.

[0021] Although the 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 novel internal spring structure, comprising a fixing rod (1), characterized in that: The fixed rod (1) and the movable rod (2) are connected to each other. The left end of the fixed rod (1) is connected to the plug (3) via a thread. A first spring (4) is connected between the plug (3) and the connecting member (5). The connecting member (5) is slidably connected to the fixed rod (1). A second spring (6) is connected between the connecting member (5) and the movable rod (2).

2. A novel internal spring structure according to claim 1, characterized in that: The movable rod (2) and the fixed rod (1) are slidably connected, and the length of the movable rod (2) is greater than the length of the fixed rod (1).

3. A novel internal spring structure according to claim 1, characterized in that: A limiting block (201) is also fixed on the movable rod (2), and the limiting block (201) is in contact with the fixed rod (1) to achieve a limiting effect.

4. A novel internal spring structure according to claim 1, characterized in that: A protrusion (301) is fixed to the right end of the plug (3), and the protrusion (301) and the first spring (4) are nested and connected.

5. A novel internal spring structure according to claim 1, characterized in that: A convex shaft (501) is fixed at the left end of the connecting member (5), and the convex shaft (501) and the first spring (4) are in a nested connection. A sleeve (502) is fixed at the right end of the connecting member (5), and the sleeve (502) and the second spring (6) are in a nested connection.

6. A novel internal spring structure according to claim 1, characterized in that: The second spring (6) and the movable rod (2) are nested and connected, the spiral direction of the second spring (6) is opposite to the spiral direction of the first spring (4), and the diameter of the second spring (6) is smaller than the diameter of the first spring (4).

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