Double-spring self-rewinding disc

Abstract

The utility model discloses a double-spring self-rewinding reel which comprises a support, a rotating shaft is rotatably connected to the upper portion of the support, a rotating winch is fixedly connected to the outer side of the rotating shaft in a sleeved mode, a limiting mechanism is arranged in the center of one side of the rotating winch, and a first reel is fixedly connected to the interior of the side, away from the limiting mechanism, of the rotating winch. The end, close to the first reel, of the outer side of the rotating shaft is rotationally sleeved with a second reel. According to the utility model, a lever transmission structure is arranged between the two coil springs by utilizing the second reel and the first limiting sleeve which rotate independently, so that when the second limiting sleeve is fixed relative to the bracket, the first reel rotates; the resilience force of the coil spring in the rewinding disc can be transmitted to the coil spring in the second reel through the first limiting sleeve and the second reel which rotate freely, so that the two coil springs are connected in series, and the rewinding length of the rewinding disc is greatly expanded.

Description

Technical Field

[0001] This utility model relates to the field of spring self-returning reel technology, and in particular to a double-spring self-returning reel. Background Technology

[0002] Spring-loaded self-rewinding reels are generally used for hoses or cables. They allow for free adjustment of the extended length and can automatically rewind the hose using spring power. They are widely used in tank trucks, gas stations, and outdoor construction sites.

[0003] Existing self-rewinding coils typically use a planar spiral spring, similar to a clockwork mechanism, as the rewinding power. Therefore, the maximum number of rotations of the self-rewinding coil is related to the maximum stroke of the spring. Since the maximum stroke of the spring is limited by the winch diameter, spring plate thickness, and the number of spring coils, the most direct way to increase the winding length is to increase the winch diameter and use a larger spiral spring. However, increasing the coil diameter not only requires a complete change in the specifications of all parts, greatly increasing production costs, but also limits the application scenarios due to the change in specifications not being compatible with the original application. On the other hand, reducing the spring plate thickness and increasing the number of spring coils not only have limited effect, but also reduce the rewinding force. Therefore, a self-rewinding coil that can significantly increase the number of rotations without increasing the coil diameter is needed. Utility Model Content

[0004] The purpose of this invention is to solve at least one of the technical problems existing in the prior art by providing a double-spring self-returning reel, which solves the above-mentioned problem.

[0005] To achieve the above objectives, a double-spring self-returning reel is provided, comprising a bracket, a rotating shaft rotatably connected to the upper part of the bracket, a rotating winch fixedly sleeved on the outer side of the rotating shaft, a limiting mechanism provided at the center of one side of the rotating winch, a first reel fixedly connected inside the side of the rotating winch away from the limiting mechanism, a second reel rotatably sleeved at the outer end of the rotating shaft near the first reel, a first limiting sleeve provided at the center of the first reel, a second limiting sleeve provided at the center of the second reel, spring retaining grooves provided on the outer sides of both the first and second limiting sleeves, a first retaining plate fixedly connected to the inner side of the outer edge of the first reel, and a second retaining plate fixedly connected to the inner side of the outer edge of the second reel.

[0006] According to the aforementioned double-spring self-rewinding reel, the limiting mechanism is a ratchet chuck limiting device already available on the market.

[0007] According to the aforementioned double-spring self-rewinding reel, the inner side of the first limiting sleeve is rotatably sleeved with the second limiting sleeve, and the end of the first limiting sleeve near the limiting mechanism is fixedly connected to the second reel.

[0008] According to the aforementioned double-spring self-rewinding reel, the inner side of the second limiting sleeve is rotatably sleeved with the rotating shaft, and the end of the second limiting sleeve away from the limiting mechanism is fixedly connected to the bracket through a sleeve plate.

[0009] According to the aforementioned double-spring self-rewinding reel, the first reel and the second reel are respectively provided with a first spiral spring and a second spiral spring inside.

[0010] According to the aforementioned double-spring self-rewinding reel, the inner ends of the first and second spiral springs are respectively fixedly engaged with the first and second limiting sleeves via spring retaining grooves, and the outer ends of the first and second spiral springs are respectively fixedly engaged with the first and second reels via the first and second retaining plates.

[0011] The above solution has at least one of the following beneficial effects:

[0012] 1. This utility model is provided with a first reel fixed relative to the rotating winch and a second reel that rotates independently. With the first limiting sleeve fixedly connected to the second reel, a lever transmission structure can be set between the two coil springs by using the independently rotating second reel and the first limiting sleeve. When the second limiting sleeve is fixed relative to the bracket, when the first reel rotates, the rebound force of the coil spring inside it can be transmitted to the coil spring in the second reel through the freely rotating first limiting sleeve and the second reel, so that the two coil springs are connected in series, which greatly extends the rewinding length of the reel and enhances the practicality of the device.

[0013] 2. This utility model, by setting two reels of the same specification inside the rotating winch, and with the nesting of the first and second limiting sleeves, can significantly increase the rewinding stroke while keeping the specifications of the rotating winch unchanged. Only a new accessory, the first limiting sleeve, needs to be added. During production, only the original limiting sleeve needs to be extended to serve as the second limiting sleeve, and then the second reel needs to be added. The production line modification cost is small, reducing the impact on the usage and production scenarios and enhancing the practicality of the device.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a schematic diagram of the overall structure of a double-spring self-rewinding reel according to the present invention;

[0017] Figure 2This is a schematic diagram of the internal structure of a rotating winch with a double spring self-rewinding mechanism according to this utility model.

[0018] Figure 3 This is a schematic diagram of the internal structure of the second reel of a double-spring self-rewinding reel according to the present invention;

[0019] Figure 4 This is a schematic diagram of the internal structure of the first reel of a double-spring self-rewinding reel according to the present invention.

[0020] Legend:

[0021] 1. Bracket; 2. Rotating shaft; 3. Rotating winch; 4. First reel; 5. Second reel; 6. First limiting sleeve; 7. Second limiting sleeve; 8. Spring retainer groove; 9. First retaining plate; 10. Second retaining plate; 11. Limiting mechanism. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] Reference Figure 1-4 This utility model embodiment provides a double-spring self-returning reel, including a bracket 1. A rotating shaft 2 is rotatably connected to the upper part of the bracket 1. A rotating winch 3 is fixedly sleeved on the outer side of the rotating shaft 2. A limiting mechanism 11 is provided at the center of one side of the rotating winch 3. The limiting mechanism 11 is a ratchet chuck limiting device available on the market. A first reel 4 is fixedly connected inside the side of the rotating winch 3 away from the limiting mechanism 11. A second reel 5 is rotatably sleeved at the outer end of the rotating shaft 2 near the first reel 4. A first limiting sleeve 6 is provided at the center of the interior of the first reel 4. The end of the first limiting sleeve 6 near the limiting mechanism 11 is fixedly connected to the second reel 5. A second limiting sleeve 7 is provided at the center of the second reel 5. The inner side of the first limiting sleeve 6 is rotatably sleeved with the second limiting sleeve 7, and the inner side of the second limiting sleeve 7 is rotatably sleeved with the rotating shaft 2. The end of the second limiting sleeve 7 away from the limiting mechanism 11 is fixedly connected to the bracket 1 through the sleeve plate. During production, by setting two reels of the same specification inside the rotating winch 3, and with the nesting of the first limiting sleeve 6 and the second limiting sleeve 7, the specifications of the rotating winch can remain unchanged while greatly increasing the rewinding stroke. Only a new accessory of the first limiting sleeve 6 needs to be added, and the original limiting sleeve only needs to be extended to serve as the second limiting sleeve 7 and then the assembly of the second reel 5 can be added. The production line modification cost is small, reducing the impact on the usage and production scenarios.

[0024] Both the first limiting sleeve 6 and the second limiting sleeve 7 have spring grooves 8 on their outer sides. The first reel 4 and the second reel 5 are respectively equipped with a first spiral spring and a second spiral spring inside. A first locking plate 9 is fixedly connected to the inner side of the outer edge of the first reel 4, and a second locking plate 10 is fixedly connected to the inner side of the outer edge of the second reel 5. One inner end of each of the first and second spiral springs is fixedly engaged with the first limiting sleeve 6 and the second limiting sleeve 7 respectively through the spring grooves 8. One outer end of each of the first and second spiral springs is connected to the first reel 6 through the first locking plate 9 and the second locking plate 10 respectively. The second reel 4 and the second reel 5 are fixedly connected. The independently rotating second reel 5 and the first limiting sleeve 6 form a lever transmission structure between the first and second coil springs. When the second limiting sleeve 7 is fixed relative to the bracket 1, the rebound force of the first coil spring inside the rotating winch 3 can be transmitted to the second coil spring inside the second reel 5 through the freely rotating first limiting sleeve 6 and the second reel 5. This allows the two coil springs to be connected in series, which alleviates the coil spring's curling under the same number of rotations of the rotating winch 3 and greatly extends the rewind length of the reel.

[0025] Working Principle: In operation, this invention features a first reel 4 fixed relative to the rotating winch 3 and an independently rotating second reel 5. A first limiting sleeve 6, fixedly connected to the second reel 5, allows for a lever transmission structure between the independently rotating second reel 5 and the first limiting sleeve 6, connecting the first and second coil springs. With the second limiting sleeve 7 fixed relative to the bracket 1, the rebound force of the first coil spring inside the rotating winch 3 is transmitted through the freely rotating first limiting sleeve 6 and the second reel 5 to the second coil spring within the second reel 5, thus engaging the two coil springs in series. The connection alleviates the coil spring's curling under the same number of rotations of the rotating winch 3, greatly extending the rewind length of the rewinding disc. Furthermore, during production, by setting two rewinding discs of the same specification inside the rotating winch 3, and with the nesting of the first limit sleeve 6 and the second limit sleeve 7, the specifications of the rotating winch can remain unchanged while significantly increasing the rewind stroke. Only a new accessory, the first limit sleeve 6, needs to be added, and the original limit sleeve only needs to be extended to serve as the second limit sleeve 7, followed by the addition of the second rewinding disc 5. The production line modification cost is small, reducing the impact on the usage and production scenarios.

[0026] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A double spring self-recoiling reel comprising a support (1), characterized in that: The upper part of the support (1) is rotatably connected with a rotating shaft (2), the outer side of the rotating shaft (2) is sleeved with a rotating winch (3), the center of one side of the rotating winch (3) is provided with a limiting mechanism (11), the inner side of the side of the rotating winch (3) away from the limiting mechanism (11) is fixedly connected with a first reel (4), the outer side of one end of the rotating shaft (2) close to the first reel (4) is rotatably sleeved with a second reel (5), the inner center of the first reel (4) is provided with a first limiting sleeve (6), the center of the second reel (5) is provided with a second limiting sleeve (7), the outer side of the first limiting sleeve (6) and the second limiting sleeve (7) is respectively provided with a reel spring clamping groove (8), the inner side of the outer edge of the first reel (4) is fixedly connected with a first clamping plate (9), the inner side of the outer edge of the second reel (5) is fixedly connected with a second clamping plate (10).

2. A dual spring self-retracting disc according to claim 1, wherein, The limiting mechanism (11) is a ratchet chuck limiting device existing in the market.

3. A dual spring self-retracting disc according to claim 1, wherein, The inner side of the first limiting sleeve (6) and the second limiting sleeve (7) is rotatably sleeved, one end of the first limiting sleeve (6) close to the limiting mechanism (11) is fixedly connected with the second reel (5).

4. The dual spring self-retracting disc of claim 1, wherein, The inner side of the second limiting sleeve (7) is rotatably sleeved with the rotating shaft (2), one end of the second limiting sleeve (7) away from the limiting mechanism (11) is fixedly connected with the support (1) through a sleeve disc.

5. The dual spring self-retracting disc of claim 1, wherein, The inner side of the first reel (4) and the second reel (5) is respectively provided with a first spiral spring and a second spiral spring.

6. A dual spring self-retracting disc according to claim 5, wherein, The inner side of one end of the first spiral spring and the second spiral spring is respectively fixedly connected with the first limiting sleeve (6) and the second limiting sleeve (7) through the reel spring clamping groove (8), the outer side of one end of the first spiral spring and the second spiral spring is respectively fixedly connected with the first reel (4) and the second reel (5) through the first clamping plate (9) and the second clamping plate (10).

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