CN219936970U - Spring energy storage mechanism and switch device with same - Google Patents

Abstract

The utility model relates to a spring energy storage mechanism and a switching device with the same. The spring energy storage mechanism includes: a pair of first mounting plates, each of the first mounting plates being spaced side-by-side relative to one another; a second mounting plate located between and abutting each of the first mounting plates, the second mounting plate extending from between the first pair of mounting plates; the first limiting parts are formed at the end parts of the first mounting plates and the second mounting plates, and the second limiting parts are formed at the end parts of the second mounting plates and the pair of mounting plates; a pair of spring brackets sleeved to the overlapping sections of the pair of first mounting plates and the second mounting plate, each spring bracket being disposed adjacent to the first limit portion and the second limit portion, respectively; the compression spring is sleeved on a section where the pair of first mounting plates and the second mounting plates are overlapped, and two ends of the compression spring respectively abut against the spring brackets.

Description

Spring energy storage mechanism and switch device with same

Technical Field

The utility model relates to the technical field of power equipment, in particular to a spring energy storage mechanism and a switching device with the same.

Background

With the increasing demand for electricity, switching devices such as circuit breakers are widely used in power systems to control and protect electrical circuits by closing and opening the circuit breakers. The circuit breaker can be internally provided with an energy storage mechanism and an operating mechanism matched with the energy storage mechanism, the energy storage mechanism can store energy under the action of external force and is kept in an energy storage state, and when a closing signal or a separating signal is received, the energy storage mechanism can be unlocked to release energy, so that the operating mechanism is driven to complete closing operation or separating operation. However, the energy storage mechanism in the prior art generally adopts a spring energy storage mechanism comprising a tension spring and a spring hanging plate, the installation space required by using the tension spring is large, and during the energy storage and energy release, the tension spring inevitably has the defects of stress concentration and easy cracking of the connection part of the tension spring and the spring hanging plate, and is easy to swing to cause poor stability, thereby reducing the reliability of the spring energy storage mechanism and the circuit breaker.

There is therefore a need in the art for a spring energy storage mechanism with less space occupation and higher reliability and a switching device having the same.

Disclosure of Invention

The present utility model aims to provide a spring energy storage mechanism which at least solves some of the above mentioned problems.

The utility model also aims to provide a switching device applying the improved spring energy storage mechanism.

According to one aspect of the present utility model, there is provided a spring energy storage mechanism comprising: a pair of first mounting plates, each of the first mounting plates being spaced side-by-side relative to one another; a second mounting plate located between and against each of the pair of first mounting plates, the second mounting plate extending from between the pair of first mounting plates; a first limit portion formed at an end portion of each of the first mounting plates overlapping the second mounting plates, and a second limit portion formed at an end portion of the second mounting plate overlapping the pair of first mounting plates; a pair of spring brackets that are sleeved to the sections where the pair of first mounting plates and the second mounting plate overlap, each spring bracket being disposed adjacent to the first limit portion and the second limit portion, respectively; a compression spring which is sleeved to a section where the pair of first mounting plates and the second mounting plate overlap, and both ends of which are respectively abutted to the spring brackets; the first limiting part and the second limiting part are close to each other to overcome the acting force of the pressure spring to drive the spring brackets to move towards each other until the energy storage state.

Compared with the prior art, the spring energy storage mechanism provided by the utility model has the advantages that the energy storage and release are realized by adopting the first mounting plate, the second mounting plate, the first limiting part, the second limiting part, the spring bracket and the pressure spring, the structure is simple, and the operation is convenient. Further, by arranging a pair of first mounting plates and a second mounting plate located therein, movement of the second mounting plate relative to the first mounting plate can be guided by the first mounting plate during energy storage and release, thereby improving stability during movement. In addition, the spring energy storage mechanism adopts the pressure spring and the spring bracket matched with the pressure spring to provide the spring function, so that the formation of stress concentration points in the mechanism is avoided, and the durability and the reliability of the spring energy storage mechanism are improved.

Preferably, each of the spring brackets includes a support plate abutting to an end of the compression spring and a support cylinder located at a side of the support plate adjacent to the compression spring to contact an inner side of the compression spring.

Preferably, each of the first mounting plates and the second mounting plates are arranged side by side in the thickness direction, the first stopper portion extends and protrudes in the width direction of the corresponding first mounting plate, and the second stopper portion extends and protrudes in the width direction from the second mounting plate.

Preferably, the support plate is provided with a guide hole through which the pair of first mounting plates and the second mounting plate pass together with the support cylinder, the shape of the guide hole is adapted to the projected shape of the pair of first mounting plates and the second mounting plate therebetween on a plane in the width direction, and the first limit portion and the second limit portion both extend beyond the guide hole on the plane in the width direction.

Preferably, the second mounting plate is identical in construction to each first mounting plate.

Preferably, a first connecting hole is formed in the end portion, away from the second mounting plate, of each first mounting plate, and a second connecting hole is formed in the end portion, away from the first mounting plate, of each second mounting plate.

Preferably, the first limiting part and the second limiting part are respectively provided with an avoidance part at one side far away from the corresponding mounting plate.

According to another aspect of the present utility model, there is also provided a switching device comprising the aforementioned spring energy storage mechanism, and a base and a lever rotatably connected to the pair of first and second mounting plates, respectively.

Additional features and advantages of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following, or may be learned from the practice of the utility model.

Drawings

Embodiments of the present utility model are described in detail below with reference to the attached drawing figures, wherein:

FIG. 1 is a schematic illustration of a spring energy storage mechanism according to the present utility model in a de-energized state;

FIG. 2 is a schematic illustration of a spring energy storage mechanism according to the present utility model in an energy storage state;

FIG. 3 is a schematic view of the spring energy storage mechanism of FIG. 2 with the compression spring removed;

FIG. 4 is a first side view of a first mounting plate in the spring energy storage mechanism according to the present utility model;

FIG. 5 is a second side view of the first mounting plate in the spring energy storage mechanism according to the present utility model;

FIG. 6 is a schematic view of a spring bracket in a spring energy storage mechanism according to the present utility model;

fig. 7 is a schematic illustration of an application of the spring energy storage mechanism according to the present utility model, wherein the spring energy storage bracket is in an energy storage state.

Reference numerals illustrate:

10-a spring energy storage mechanism; 11-a first mounting plate; 111-first connection holes; 12-a second mounting plate; 121-a second connection hole; 131-a first limit part; 132-a second limit portion; 133-avoidance; 14-a spring support; 141-a support plate; 142-a support cylinder; 143-a guide hole; 144-recesses; 15-a compression spring; 16-a base; 17-crank arm.

Detailed Description

Referring now to the drawings, illustrative versions of the disclosed spring energy storage mechanism are described in detail. Although the drawings are provided to present some embodiments of the utility model, the drawings are not necessarily to scale and certain features may be exaggerated, removed, or partially sectioned to better illustrate and explain the present disclosure. The position of part of components in the drawings can be adjusted according to actual requirements on the premise of not affecting the technical effect. The appearances of the phrase "in the drawings" or similar language in the specification do not necessarily refer to all figures or examples.

Certain directional terms used hereinafter to describe the drawings, such as "inner", "outer", "above", "below" and other directional terms, will be understood to have their normal meaning and refer to those directions as they would be when viewing the drawings. Unless otherwise indicated, directional terms described herein are generally in accordance with conventional directions as understood by those skilled in the art.

The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.

The terms "joined," "connected," and the like as used herein, include both two components being indirectly joined together by means of an intermediate layer such as an adhesive, a solder, or the like, or an intermediate member such as a connecting member, a transition member, or the like, and also two components being directly joined together without any intermediate layer such as an adhesive, a solder, or the like, or an intermediate member such as a connecting member, a transition member, or the like.

Fig. 1 to 7 show, by way of example, a spring energy storage mechanism 10 according to the utility model, the spring energy storage mechanism 10 in this example taking up little space, being more stable and having greater reliability. As shown in the drawing, the spring energy storage mechanism 10 of the present utility model may include a pair of first mounting plates 11, a second mounting plate 12, first and second stopper portions 131 and 132, a pair of spring brackets 14, and a compression spring 15.

Specifically, the first mounting plate 11 and the second mounting plate 12 may be sheet metal parts, which are simpler to process and lower in cost than parts such as machining parts and shaft pins that are generally used in the spring energy storage mechanism 10 in the prior art. The pair of first mounting plates 11 may preferably be arranged at a distance from each other in the thickness direction, which may preferably be close to or equal to the thickness of the second mounting plate 12, so that the second mounting plate 12 may be abutted to the first mounting plates 11 on both sides when the second mounting plate 12 is arranged between the pair of first mounting plates 11, whereby the pair of first mounting plates 11 may serve as a guide structure when the second mounting plate 12 moves relative to the first mounting plates 11, so that the stability of the spring energy storage mechanism 10 in the present embodiment during energy storage and release is made high, thereby improving reliability.

The second mounting plates 12 may be partially located between the pair of first mounting plates 11, whereby the second mounting plates 12 partially overlap the pair of first mounting plates 11. The end of each first mounting plate 11 overlapping the second mounting plate 12 may be provided with a first stopper 131, and similarly, the end of each second mounting plate 12 overlapping the paired first mounting plates 11 may be provided with a second stopper 132. Alternatively, the second mounting plate 12 may be identical in construction to each first mounting plate 11 for ease of manufacture and reduced cost.

The pair of spring brackets 14 may be sleeved to a section where the pair of first mounting plates 11 and the pair of second mounting plates 12 overlap, and each spring bracket 14 is arranged at a spacing with respect to each other and adjacent to the first limiting portion 131 and the second limiting portion 132, respectively. The compression spring 15 is similarly sleeved to the overlapping sections of the paired first and second mounting plates 11 and 12, and both ends thereof may abut against the first and second stopper portions 131 and 132, respectively. Since the compression spring 15 may have an initial pressure in the energy release state, when the ends of the first mounting plate 11 and the second mounting plate 12 away from each other, that is, the ends not provided with the stopper portion are fixed, the compression spring 15 may apply a force to the spring brackets 14 at both ends so that each spring bracket 14 is sandwiched between the compression spring 15 and the adjacent stopper portion.

In this way, the spring energy storage mechanism 10 of the present utility model can be moved away from each other by manual or electric action, whereby the first and second stopper portions 131 and 132 at their respective ends are moved toward each other, and the first and second stopper portions 131 and 132 can correspondingly push the respective spring brackets 14 toward each other against the force of the compression spring 15 until the spring energy storage mechanism 10 is moved to the energy storage state shown in fig. 2 and locked by means of a switching device such as other structures in a circuit breaker. When receiving the closing signal or the opening signal, the spring energy storage mechanism 10 is unlocked to release energy back to the energy release state shown in fig. 1, and the circuit breaker can correspondingly complete the closing action or the opening action.

The spring energy storage mechanism 10 in the utility model can be suitable for compression springs 15 with different specifications, particularly high loads by adjusting the widths of the spring bracket 14, the first mounting plate 11 and the second mounting plate 12, is simple to assemble and greatly expands the application range of the spring energy storage mechanism 10 in the utility model.

Alternatively, as shown in fig. 6, the spring bracket 14 may include a support plate 141 and a support cylinder 142 that are integrally formed. The support plate 141 may be configured as a circular plate to maintain connection with the end of the compression spring 15 while minimizing the size. By using the support plate 141, the spring energy storage mechanism 10 can be abutted against the end spring coils of the pressure spring 15 during energy storage and energy release, so that the problem of stress concentration caused by the adoption of a tension spring and a spring hanging plate in the prior art can be avoided, and the reliability of the spring energy storage bracket is further improved.

In addition, as shown in fig. 1 to 3 and 6, the support cylinder 142 may be formed to be radially contracted with respect to the support plate 141 at a side of the support plate 141 adjacent to the compression spring 15 such that the support cylinder 142 may be just contacted to the inner diameter of the compression spring 15, thereby further enhancing the stability of the movement of the compression spring 15 during energy storage and release. That is, the outer diameter of the support plate 141 may be designed to be slightly larger than the outer diameter of the compression spring 15, and the outer diameter of the support cylinder 142 may be designed to be equal to the inner diameter of the compression spring 15. Wherein the axial length of the support cylinders 142 may be designed such that a space may be maintained between the support cylinders 142 of the two spring brackets 14 when the spring energy storage brackets are moved to the energy storage state.

Alternatively, as shown in fig. 1 to 3, two first mounting plates 11 and second mounting plates 12 therebetween are arranged side by side in the thickness direction, the two first mounting plates 11 and the second mounting plates 12 are partially overlapped in the length direction, first stopper portions 131 extend and protrude in the width direction at the end portions of the respective first mounting plates 11, and second stopper portions 132 extend and protrude in the width direction at the end portions of the second mounting plates 12. This can increase the relative area between the second mounting plate 12 and the first mounting plates 11 on both sides as much as possible, thereby improving the stability of the movement of the second mounting plate 12 with respect to the first mounting plate 11.

Alternatively, as shown in fig. 3 to 6, the support plate 141 and the support cylinder 142 are provided with guide holes 143 in the axial direction through which the pair of first mounting plates 11 and the second mounting plate 12 therebetween pass. The shape of the guide hole 143 may be adapted to a projected shape in which the first mounting plate 11 and the second mounting plate 12 are on a plane in the width direction, that is, a projected shape on a plane perpendicular to the axial direction of the support plate 141 and the support cylinder 142. Thus, the guide holes 143 can serve as guide structures of the first and second mounting plates 11 and 12 in the 360 degree direction during energy storage and release of the spring energy storage mechanism 10, so that the spring energy storage mechanism 10 can be guided more stably and smoothly. The first limiting portion 131 and the second limiting portion 132 may extend beyond the guiding hole 143 on a plane where the width is located, so that the two spring brackets 14 may be pushed to move towards each other against the force of the compression spring 15 under the action of an external force.

Alternatively, as shown in fig. 3 to 5, the ends of the first and second mounting plates 11 and 12 remote from each other, i.e., the ends not provided with the stopper portion, may be provided with first and second connection holes 111 and 121, respectively, so as to be connected with other structures in the circuit breaker. Illustratively, the first and second connection holes 111 and 121 may each be a bearing hole. Therefore, during the actual assembly, as shown in fig. 7, the two first mounting plates 11 may be first hung to the base 16 of the circuit breaker through the first connection hole 111, and the crank arm 17 of the circuit breaker is rotated to an angle required for the assembly such that the distance between the crank arm 17 and the base 16 is exactly equal to the distance between the two connection holes of the first mounting plate 11 and the second mounting plate 12 in the power release state, and then the second mounting plate 12 is hung to the crank arm 17 of the circuit breaker through the second connection hole 121. Finally, two first mounting plates 11 are rotatably connected to the base 16 at the first connecting holes 111 and the second mounting plate 12 is rotatably connected to the crank arm 17 at the second connecting holes 121 using a plurality of fasteners such as screws.

When energy storage is needed, the second mounting plate 12 can be driven by an energy storage system formed by motor gears and the like in the circuit breaker to move the crank arm 17, so that the second mounting plate 12 is pulled to move away from the first mounting plate 11, and the pressure spring 15 is driven to store energy.

Alternatively, in the case where the first mounting plates 11 and the second mounting plates 12 are identical in configuration, the projections of the two first mounting plates 11 and the second mounting plate 12 therebetween on the plane in the width direction may be rectangular. Accordingly, the guide holes 143 of the spring bracket 14 may be respectively provided as rectangular holes so as to guide the first and second mounting plates 11 and 12. Further, the support plate 141 may be provided with a recess 144 extending away from the guide hole 143 from a portion of the opposite side of the guide hole 143, such as the middle region, in communication with the support cylinder 142, thereby facilitating the assembly between the spring bracket 14 and the first mounting plate 11 and reducing friction therebetween while ensuring the guiding action of the spring bracket 14 on the first mounting plate 11 and the second mounting plate 12.

Optionally, as shown in fig. 4, 5 and 7, the side of the first limiting portion 131 and the second limiting portion 132 away from the corresponding mounting plates may be provided with an avoiding portion 133, preferably an avoiding portion 133 with a concave arc shape, so as to avoid interference with mounting parts such as a circular washer and the like on the base 16 and the crank arm 17 when the spring energy storage bracket moves to the energy storage state in the present utility model, that is, the first mounting plate 11 approaches the base 16 and the second mounting plate 12 approaches the crank arm 17.

It should be understood that although the present disclosure has been described in terms of various embodiments, not every embodiment is provided with a separate technical solution, and this description is for clarity only, and those skilled in the art should consider the disclosure as a whole, and the technical solutions in the various embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.

The foregoing is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model. Any equivalent alterations, modifications and combinations thereof will be effected by those skilled in the art without departing from the spirit and principles of this utility model, and it is intended to be within the scope of the utility model.

Claims (8)

1. A spring energy storage mechanism (10), characterized in that the spring energy storage mechanism (10) comprises:

a pair of first mounting plates (11), each first mounting plate (11) being arranged in a side-by-side spaced relationship relative to each other;

a second mounting plate (12) located between the pair of first mounting plates (11) and being attached to each of the first mounting plates (11), the second mounting plate (12) extending from between the pair of first mounting plates (11);

a first stopper portion (131) and a second stopper portion (132), the first stopper portion (131) being formed at an end portion of each of the first mounting plates (11) overlapping the second mounting plates (12), the second stopper portion (132) being formed at an end portion of the second mounting plates (12) overlapping the pair of first mounting plates (11);

a pair of spring brackets (14) that are sleeved to a section where the pair of first mounting plates (11) and the second mounting plates (12) overlap, each spring bracket (14) being disposed adjacent to the first limit portion (131) and the second limit portion (132), respectively;

a compression spring (15) which is sleeved on a section where the pair of first mounting plates (11) and the second mounting plate (12) overlap, and both ends of which respectively abut against the spring brackets (14);

wherein the pair of first mounting plates (11) and the second mounting plates (12) are configured to move away from each other under the action of an external force, and the first limiting portion (131) and the second limiting portion (132) move close to each other so as to overcome the acting force of the pressure spring (15) to drive the spring brackets (14) to move toward each other until the energy storage state.

2. The spring energy storage mechanism (10) of claim 1, wherein each of the spring brackets (14) includes a support plate (141) abutting an end of the compression spring (15) and a support cylinder (142) located on a side of the support plate (141) adjacent the compression spring (15) to contact an inside of the compression spring (15).

3. The spring energy storage mechanism (10) according to claim 1, wherein each of the first mounting plates (11) and the second mounting plates (12) are arranged side by side in a thickness direction, the first stopper portion (131) extends and protrudes in a width direction of the corresponding first mounting plate (11), and the second stopper portion (132) extends and protrudes in the width direction from the second mounting plate (12).

4. The spring energy storage mechanism (10) according to claim 2, wherein the support plate (141) is provided with a guide hole (143) through which the pair of first mounting plates (11) and the second mounting plate (12) pass together with the support cylinder (142), the shape of the guide hole (143) is adapted to the projected shape of the pair of first mounting plates (11) and the second mounting plate (12) therebetween on a plane in the width direction, and the first stopper portion (131) and the second stopper portion (132) each extend beyond the guide hole (143) on the plane in the width direction.

5. The spring energy storage mechanism (10) of claim 1 wherein the second mounting plate (12) is identical in construction to each first mounting plate (11).

6. The spring energy storage mechanism (10) of claim 1, wherein the end of each first mounting plate (11) remote from the second mounting plate (12) is provided with a first connection hole (111), and the end of the second mounting plate (12) remote from the first mounting plate (11) is provided with a second connection hole (121).

7. The spring energy storage mechanism (10) of claim 1, wherein the first and second limiting portions (131, 132) are each provided with a relief portion (133) on a side thereof remote from the respective mounting plate.

8. Switching device, characterized in that it comprises a spring energy storage mechanism (10) according to any one of claims 1 to 7, and a base (16) and a lever (17) rotatably connected to the pair of first mounting plates (11) and the second mounting plate (12), respectively.