Spring with protective structure

Abstract

The utility model discloses a spring with a protective structure, which comprises a spring body, the upper end and the lower end of the spring body are connected with a protective shell, the upper end and the lower end of the protective shell are in threaded connection with a connecting mechanism, an adjusting mechanism is arranged in the middle of the protective shell, and the adjusting mechanism is arranged in the middle of the spring body. The lower end of the limiting sleeve is fixedly connected to the middle of the inner bottom wall of the protective shell, the periphery of the lower end of the threaded rod is in threaded connection to the middle of the threaded ring, the periphery of the threaded ring is slidably connected into the limiting sleeve, and the upper end of the threaded rod penetrates through and is rotationally connected to the middle of the upper side of the protective shell and fixedly connected to the middle of the rotary knob. According to the spring with the protection structure, the rotary knob is twisted to enable the threaded rod to rotate, the threaded ring is limited through the limiting sleeve, the threaded ring moves on the threaded rod, and therefore the length of the portion, stretching into the limiting sleeve, of the threaded rod is controlled, the length of the spring body is controlled, and the initial elastic force of the spring body is adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to spring technical field, especially a spring with protection structure. BACKGROUND

[0002] As a common elastic element, springs are widely used in various mechanical devices, automobile parts, electronic equipment and other fields. However, in actual use, springs often face some problems. On the one hand, in the long-term stretching and compression process, springs are easily affected by external environmental factors such as dust, moisture, corrosive gas, etc. These impurities may enter the internal structure of the spring, causing the spring to rust and corrode, thereby reducing the elastic performance and service life of the spring. On the other hand, in some application scenarios, it is necessary to adjust the initial elastic force of the spring according to different working requirements, but traditional springs often cannot meet this requirement. SUMMARY

[0003] The main purpose of the utility model is to provide a spring with a protective structure, which can effectively solve the problems in the background art.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows: a spring with a protective structure, comprising a spring body, the upper and lower ends of the spring body are connected with a protective shell, a connecting mechanism is threadedly connected to the upper and lower ends of the protective shell, an adjusting mechanism is arranged in the middle of the protective shell, and the adjusting mechanism is arranged in the middle of the spring body.

[0005] The adjusting mechanism comprises a threaded rod, a limiting sleeve, a threaded ring and a knob, the lower end of the limiting sleeve is fixedly connected to the middle of the inner bottom wall of the protective shell, the lower end of the threaded rod is threadedly connected to the middle of the threaded ring, the threaded ring is slidably connected to the inside of the limiting sleeve, the upper end of the threaded rod penetrates and is rotatably connected to the middle of the upper side of the protective shell, and the upper end of the threaded rod is fixedly connected to the middle of the knob.

[0006] Preferably, the surface of the spring body is provided with a corrosion-resistant coating.

[0007] Preferably, a groove is arranged in the middle of the upper side of the knob.

[0008] Preferably, a limiting block is fixedly connected to the lower end of the threaded rod.

[0009] Preferably, the connecting mechanism comprises a connecting sleeve, a connecting block and a connecting ring, one end of the connecting sleeve is threadedly connected to the upper and lower ends of the protective shell, the connecting ring is fixedly connected to the middle of the connecting block, and the connecting block is threadedly connected to the other end of the connecting sleeve.

[0010] Preferably, through holes are arranged in the upper and lower ends of the protective shell, and a through hole is arranged in the middle of the connecting sleeve.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. Twist the knob to rotate the threaded rod, which limits the threaded ring through the limiting sleeve, allowing the threaded ring to move on the threaded rod. This controls the length of the threaded rod extending into the limiting sleeve, thereby controlling the length of the spring body and adjusting the initial elastic force of the spring body.

[0013] 2. Liquid entering the protective shell can be drained through the through hole, and the corrosion-resistant coating can prevent the spring body 3 from being corroded, thereby extending the service life of the spring body 3. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a spring with a protective structure according to the present invention;

[0015] Figure 2 This is a schematic diagram of a connecting mechanism for a spring with a protective structure according to the present invention.

[0016] Figure 3 This is a schematic diagram of the internal structure of a spring with a protective structure according to the present invention;

[0017] Figure 4 This is a schematic diagram of the adjusting mechanism of a spring with a protective structure according to the present invention;

[0018] Figure 5 This is a schematic diagram of a threaded ring structure of a spring with a protective structure according to the present invention.

[0019] In the diagram: 1. Protective shell; 2. Connecting mechanism; 201. Connecting sleeve; 202. Connecting block; 203. Connecting ring; 3. Spring body; 4. Adjusting mechanism; 401. Threaded rod; 402. Limiting sleeve; 403. Threaded ring; 404. Knob. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] like Figures 1-5 As shown, a spring with a protective structure includes a spring body 3, the upper and lower ends of the spring body 3 are connected to a protective shell 1, the upper and lower ends of the protective shell 1 are threadedly connected to a connecting mechanism 2, and an adjusting mechanism 4 is provided in the middle of the protective shell 1. The adjusting mechanism 4 is located in the middle of the spring body 3.

[0022] The adjusting mechanism 4 comprises a threaded rod 401, a limiting sleeve 402, a threaded ring 403 and a knob 404, the lower end of the limiting sleeve 402 is fixedly connected to the middle part of the inner bottom wall of the protective shell 1, the lower end of the threaded rod 401 is threadedly connected to the middle part of the threaded ring 403, the threaded ring 403 is slidingly connected to the inside of the limiting sleeve 402, the upper end of the threaded rod 401 penetrates and is rotatably connected to the middle part of the upper side of the protective shell 1, the upper end of the threaded rod 401 is fixedly connected to the middle part of the knob 404, the knob 404 is twisted to rotate the threaded rod 401, the limiting sleeve 402 limits the threaded ring 403 to move on the threaded rod 401, thereby controlling the length of the threaded rod 401 extending into the limiting sleeve 402, and further controlling the length of the spring body 3, so as to adjust the initial elastic force of the spring body 3.

[0023] The surface of the spring body 3 is provided with a corrosion-resistant coating. Since the protective shell 1 is connected by two sleeves and can slide relative to each other, the connection part of the protective shell 1 is not sealed, and external liquid can enter the inside of the protective shell 1. The corrosion-resistant coating can prevent the spring body 3 from being corroded, thereby prolonging the service life of the spring body 3.

[0024] A groove is arranged in the middle part of the upper side of the knob 404. Since the volume of the knob 404 is small, it is inconvenient to twist it with fingers. A toothpick can be inserted into the groove, and the knob 404 can be rotated by rotating the toothpick, which is convenient to use.

[0025] A limiting block is fixedly connected to the lower end of the threaded rod 401 to prevent the threaded ring 403 from falling off from the lower part of the threaded rod 401 to the bottom of the limiting sleeve 402, so that the threaded rod 401 cannot be limited.

[0026] The connecting mechanism 2 comprises a connecting sleeve 201, a connecting block 202 and a connecting ring 203. One end of the connecting sleeve 201 is threadedly connected to the upper and lower ends of the protective shell 1. The connecting ring 203 is fixedly connected to the middle part of the connecting block 202. The outer periphery of the connecting block 202 is threadedly connected to the inside of the other end of the connecting sleeve 201. The connecting block 202 is threadedly connected to the inside of one end of the connecting sleeve 201, and then the other end of the connecting sleeve 201 is threadedly connected to the upper part of the protective shell 1. The connecting ring 203 can be connected to other structures.

[0027] The upper and lower ends of the protective shell 1 are provided with through holes, and the middle part of the connecting sleeve 201 is provided with a through hole. Since the protective shell 1 is connected by two sleeves and can slide relative to each other, the connection part of the protective shell 1 is not sealed, and external liquid can enter the inside of the protective shell 1. The liquid can be discharged through the through hole.

[0028] Working principle:

[0029] The torsion knob 404 is twisted to rotate the threaded rod 401, the threaded ring 403 is limited by the limiting sleeve 402, the threaded ring 403 is moved on the threaded rod 401, the length of the threaded rod 401 extending into the limiting sleeve 402 is controlled, the length of the spring body 3 is controlled, the initial elastic force of the spring body 3 is adjusted.

[0030] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. The skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A spring with a protective structure, comprising a spring body (3), characterized in that: The spring body (3) is connected with the protective shell (1) at both ends, the protective shell (1) is threadedly connected with the connecting mechanism (2) at both ends, and the middle of the protective shell (1) is provided with the adjusting mechanism (4), and the adjusting mechanism (4) is arranged in the middle of the spring body (3); The adjusting mechanism (4) comprises a threaded rod (401), a limiting sleeve (402), a threaded ring (403) and a knob (404), the lower end of the limiting sleeve (402) is fixedly connected to the middle of the inner bottom wall of the protective shell (1), the lower end of the threaded rod (401) is threadedly connected to the middle of the threaded ring (403), the threaded ring (403) is slidably connected to the inside of the limiting sleeve (402), and the upper end of the threaded rod (401) penetrates and is rotatably connected to the middle of the upper side of the protective shell (1); the upper end of the threaded rod (401) is fixedly connected to the middle of the knob (404).

2. The spring with a protective structure according to claim 1, characterized in that: The surface of the spring body (3) is provided with a corrosion-resistant coating.

3. The spring with a protective structure according to claim 1, characterized in that: The upper middle of the knob (404) is provided with a groove.

4. The spring with a protective structure according to claim 1, characterized in that: The lower end of the threaded rod (401) is fixedly connected with a limiting block.

5. The spring with a protective structure according to claim 1, characterized in that: The connecting mechanism (2) comprises a connecting sleeve (201), a connecting block (202) and a connecting ring (203), one end of the connecting sleeve (201) is threadedly connected to the protective shell (1) at both ends, the connecting ring (203) is fixedly connected to the middle of the connecting block (202), and the connecting block (202) is threadedly connected to the other end of the connecting sleeve (201) inside.

6. The spring with a protective structure according to claim 5, characterized in that: The protective shell (1) is provided with a through hole at both ends, and the connecting sleeve (201) is provided with a through hole in the middle.

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