Load switch

Abstract

The invention belongs to the technical field of electric appliance switches, and discloses a load switch. The load switch comprises a switch mechanism and a limiting mechanism. The switching mechanism is arranged at a preset station, the switching mechanism comprises an input assembly and an output assembly which are coaxially arranged, the output assembly is provided with a switching-off position and a switching-on position, and the input assembly can drive the output assembly to rotate around the axis of the input assembly so that the output assembly can be switched between the switching-off position and the switching-on position; the limiting mechanism can stretch out and draw back in the first direction, and when the output assembly is located at the opening position or the closing position, the limiting end of the limiting mechanism can abut against the periphery of the output assembly, so that the output assembly cannot rebound. And the limiting mechanism can limit and fix the output assembly, so that the problem that the output assembly is separated from the switching-off position or the switching-on position is avoided, and the operation safety is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of electrical switches, and in particular to a load switch. Background Art

[0002] A load switch is a switch device between a circuit breaker and an isolating switch, and has a simple arc extinguishing device. The load switch operating mechanism can control the opening and closing of the static contact, and is an important part of the load switch cabinet. However, the load switch in the prior art will be subject to the tension of the energy storage spring when in the opening and closing positions. If the spring tension is too large, the switch will be out of the original opening or closing position, which poses a greater safety risk.

[0003] Therefore, there is an urgent need for a load switch that can fix the switch in the opening or closing position to ensure that it will not leave the original position, thereby improving the safety of operation. Summary of the invention

[0004] The object of the present invention is to provide a load switch, so that the switch can be fixed in the opening or closing position, so as to ensure that the switch will not be separated from the original position, thereby improving the safety of operation.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A load switch, comprising:

[0007] A switch mechanism is arranged at a preset position, the switch mechanism comprises an input component and an output component which are arranged coaxially, the output component has an opening position and a closing position, the input component can drive the output component to rotate around its own axis so that the output component switches between the opening position and the closing position;

[0008] The limiting mechanism can be extended and retracted along the first direction. When the output component is in the opening position or the closing position, the limiting ends of the limiting mechanism can abut against the outer periphery of the output component to prevent the output component from rebounding.

[0009] Preferably, the input component includes an input shaft and a transmission member, the transmission member is arranged on the outer periphery of the input shaft and can rotate synchronously with the transmission member; the output component includes an output shaft and a transmission pin, the output shaft is provided with a transmission portion protruding radially, the transmission pin is arranged on the transmission portion, the transmission member can abut and drive the transmission pin to rotate, so that the transmission pin drives the output shaft to rotate.

[0010] Preferably, two limit grooves are provided on the outer circumference of the output shaft, and when the output shaft is in the open position or the closed position, the limit end can correspondingly abut against one of the limit grooves.

[0011] Preferably, the limiting groove is a circular semi-groove, and the limiting end is a limiting ball.

[0012] Preferably, the limiting mechanism also includes a limiting seat and an elastic member, a limiting channel is formed inside the limiting seat, the elastic member is arranged in the limiting channel, and one end is connected or abutted to a side of the limiting channel away from the output shaft, the limiting ball is located in the limiting channel and connected or abutted to the other end of the elastic member, and the elastic force of the elastic member can make the limiting ball abut against the outer periphery of the output shaft.

[0013] Preferably, the limiting mechanism further comprises a locking member, which is detachably connected to the limiting channel, and one end of the elastic member away from the limiting ball is connected to or abuts against the locking member.

[0014] Preferably, the limit seat is provided with a plurality of mounting holes, and the mounting member can detachably connect the limit seat to the outer periphery of the output assembly through the mounting holes.

[0015] Preferably, the plurality of mounting holes are symmetrically distributed along both sides of the limiting channel.

[0016] Preferably, two arc-shaped abutting portions are spaced apart on the outer circumference of the transmission member, and the two arc-shaped abutting portions can abut and push the transmission pin in turn, so that the output shaft switches between the opening position and the closing position.

[0017] Preferably, a limit shaft is provided at both the opening position and the closing position, and when the output shaft rotates to the opening position or the closing position, the transmission part can abut against the limit shaft.

[0018] Beneficial effects of the present invention:

[0019] The present invention discloses a load switch. The load switch comprises a switch mechanism and a limit mechanism; the switch mechanism is arranged at a preset position, the switch structure comprises a coaxially arranged input component and an output component, the output component has an opening position and a closing position, the input component can drive the output component to rotate around its own axis, so that the output component switches between the opening position and the closing position; the limit mechanism can be extended and retracted along a first direction, when the output component is in the opening position or the closing position, the limit ends of the limit mechanism can abut against the outer periphery of the output component, so that the output component cannot rebound.

[0020] The limit mechanism can limit and fix the output component, that is, the limit mechanism can ensure that the output component itself cannot be separated from the open position or the closed position, thereby solving the problem of output component rebound and ensuring the safety of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the load switch provided by the present invention in a closed position;

[0022] Figure 2 It is a structural schematic diagram of the load switch provided by the present invention being at a dead point position;

[0023] Figure 3 is a structural schematic diagram of a load switch provided by the present invention in an open position;

[0024] Figure 4 A side view of the load switch provided by the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the output shaft and the limiting mechanism provided by the present invention;

[0026] Figure 6 It is a schematic diagram of the limiting mechanism provided by the present invention.

[0027] In the figure:

[0028] 10. switch mechanism; 11. input assembly; 111. input shaft; 112. transmission member; 1121. arc-shaped abutment portion; 12. output assembly; 121. output shaft; 122. transmission pin; 123. transmission portion; 124. limit groove; 13. energy storage spring; 14. rotating shaft;

[0029] 20. Limiting mechanism; 21. Limiting ball; 22. Limiting seat; 221. Mounting hole; 23. Elastic member; 24. Locking member;

[0030] 30. Limit axis;

[0031] 40. Base; 41. Fixing hole;

[0032] 50. Top plate;

[0033] 60. Support shaft. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0038] This embodiment provides a load switch, such as Figure 1-Figure 4 As shown, the load switch includes a switch mechanism 10 and a limit mechanism 20; wherein the switch mechanism 10 is set at a preset position, and the switch mechanism 10 includes a coaxially arranged input component 11 and an output component 12, the output component 12 has an opening position and a closing position, and the input component 11 can drive the output component 12 to rotate around its own axis so that the output component 12 switches between the opening position and the closing position; the limit mechanism 20 can be extended and retracted along a first direction, and when the output component 12 is in the opening position or the closing position, the limit ends of the limit mechanism 20 can abut against the outer periphery of the output component 12 so that the output component 12 cannot rebound. By setting the limit mechanism 20, the output component 12 can be limited and fixed, that is, the limit mechanism 20 can ensure that the output component 12 itself cannot be separated from the opening position or the closing position, thereby solving the problem of the output component 12 being easy to rebound and ensuring the safety of operation.

[0039] It should be noted here that the load switch in the prior art still has the disadvantages of complex structure, large size, and inconvenient operation. It is not only difficult to assemble, but also very inconvenient to maintain. To solve this problem, the load switch in this embodiment also includes a base 40 and a top plate 50. A plurality of fixing holes 41 are arranged on the base 40 along the circumference. The base 40 can be detachably installed to a preset position by bolts and other structures. The base 40 and the top plate 50 are spaced and connected by a support shaft 60, so that a space capable of accommodating the switch mechanism 10 and the limit mechanism 20 is formed between the base 40 and the top plate 50, thereby ensuring that there is no exposed structure, and it is easy to disassemble and assemble, and convenient for subsequent maintenance.

[0040] like Figure 1-Figure 4 As shown, the input assembly 11 includes an input shaft 111 and a transmission member 112. The transmission member 112 is arranged on the outer periphery of the input shaft 111 and can rotate synchronously with the transmission member 112. The output assembly 12 includes an output shaft 121 and a transmission pin 122. The output shaft 121 is provided with a transmission portion 123 protruding in the radial direction. The transmission pin 122 is also arranged on the transmission portion 123. The transmission member 112 can abut against and drive the transmission pin 122 to rotate, so that the transmission pin 122 drives the output shaft 121 to rotate through the transmission portion 123. This arrangement is not only simple in structure, ensuring that the input shaft 111 and the transmission member 112 rotate synchronously, thereby ensuring the driving effect of the transmission member 112 and the transmission pin 122, but also simplifies the connection structure of the input assembly 11 and the output assembly 12, ensuring the convenience and operability of use.

[0041] What needs to be explained here is that Figure 1-Figure 3 As shown, the switch mechanism 10 in this embodiment further includes an energy storage spring 13 and a rotating shaft 14. The rotating shaft 14 is vertically arranged between the base 40 and the top plate 50, one end of the energy storage spring 13 is pivotally connected to the outer periphery of the rotating shaft 14, and the other end is hinged to the outer periphery of the transmission member 112. Figure 1 As shown, the output assembly 12 is in the closing position, at which time the energy storage spring 13 is in a stretched state. When the input shaft 111 is rotated in the clockwise direction, the transmission member 112 will also rotate accordingly, and at the same time, the connecting end of the transmission member 112 and the energy storage spring 13 will also rotate relative to each other and compress the energy storage spring 13; when the axis of the input shaft 111, the hinge point of the transmission member 112 and the energy storage spring 13, and the pivot point of the energy storage spring 13 and the rotating shaft 14 are all in the same straight line (such as Figure 2 As shown), the energy storage spring 13 is at the dead point position; the input shaft 111 is continuously rotated, and the energy storage spring 13 releases elastic potential energy to assist in pushing the transmission member 112, so that the transmission member 112 abuts against and pushes the transmission pin 122 to drive the output shaft 121 to rotate to the opening position. When the energy storage spring 13 is in the opening position, it is in the stretched state again (as shown). Figure 4No matter the output assembly 12 is in the opening position or the closing position, the energy storage spring 13 is in a stretched state, which will tend to make it move away from the original position. However, due to the existence of the limiting mechanism 20, the rebound problem is well solved, and the use effect is guaranteed.

[0042] like Figure 1-Figure 4 As shown, the transmission member 112 has a good transmission effect. Two arc-shaped abutment portions 1121 are arranged at intervals on the outer periphery of the transmission member 112. The transmission pin 122 is located between the two arc-shaped abutment portions 1121. When the input shaft 111 rotates, the two arc-shaped abutment portions 1121 can abut and push the transmission pin 122 in turn, so that the output shaft 121 can switch between the opening position and the closing position. The arc-shaped abutment portion 1121 can be arranged to better fit the outer periphery of the transmission pin 122, and can ensure that it will not be separated from the transmission pin 122 during the rotation process, thereby ensuring a good opening and closing effect.

[0043] It is further explained that the limit shaft 30 is provided at both the opening position and the closing position, and when the output shaft 121 rotates to the opening position or the closing position, the transmission part 123 can abut against the limit shaft 30. This arrangement enables the limit shaft 30 to stop the transmission part 123 from continuing to rotate after the output shaft 121 rotates to the opening position or the closing position, thereby preventing the equipment connected to the output shaft 121 from being damaged, and also preventing the energy storage spring 13 from being overstretched and fatigued and broken, thereby ensuring the safety of operation.

[0044] In order to produce a better limiting effect, such as Figure 5 As described above, two limiting grooves 124 are arranged on the outer circumference of the output shaft 121. When the output shaft 121 is in the opening position or the closing position, the limiting end of the limiting mechanism 20 can be correspondingly abutted against one of the limiting grooves 124. This structure can make the output end more firmly fix the output shaft 121, thereby ensuring a stable limiting effect.

[0045] However, this structure makes it inconvenient for the output shaft 121 to rotate, and the output end needs to be manually disengaged from the limiting groove 124 before the output shaft 121 can rotate. Figure 5 and Figure 6As shown, the limiting groove 124 is a circular half groove, and the limiting end is a limiting ball 21. During installation, the limiting ball 21 can be directly placed close to the outer periphery of the output shaft 121. When the output shaft 121 rotates, the limiting ball 21 can slide and abut against the outer periphery of the output shaft 121. When it rotates to the opening position or the closing position, since the limiting mechanism 20 can be extended and retracted along the first direction, a part of the limiting ball 21 can automatically enter the circular half groove, thereby completing the limiting; when it is necessary to switch to another position, as the output shaft 121 rotates, the circular half groove can generate a thrust to push the limiting ball 21 in the opposite direction along the first direction, and this thrust can make the limiting mechanism 20 retract in the opposite direction of the first direction, and make the limiting ball 21 continue to slide and abut against the outer periphery of the output shaft 121, until after switching to another position, the limiting ball 21 falls back into another circular half groove again, and the limiting relationship is re-formed. Not only is the structure simple, but the operation is also convenient, and there is no need to manually move the limiting mechanism 20.

[0046] In order to simplify the overall structure of the limiting mechanism 20, as shown in FIG. Figure 5 and Figure 6 As shown, the limiting mechanism 20 also includes a limiting seat 22 and an elastic member 23. A limiting channel is formed inside the limiting seat 22. The elastic member 23 is arranged in the limiting channel, and one end is connected or abutted with a side of the limiting channel away from the output shaft 121. The limiting ball 21 is located in the limiting channel and is connected or abutted with the other end of the elastic member 23. The elastic force of the elastic member 23 can make the limiting ball 21 abut against the outer periphery of the output shaft 121. The limiting seat 22 can ensure the stability of the limiting mechanism 20. The elastic member 23 can be elastically exposed by placing them in the limiting channel, thereby better protecting the elastic member 23. At the same time, the two ends of the elastic member 23 can choose to be connected or abutted, which reduces the difficulty of installation. The overall structure is simple and can produce a good limiting effect, thereby improving operability.

[0047] It should be noted that, in this embodiment, the elastic member 23 is a spring, which has a simple structure, low price, is easy to mass produce, and can effectively reduce manufacturing costs. In other embodiments, an automatic telescopic rod can be used instead of a spring.

[0048] Considering that it is inconvenient if the elastic member 23 is directly connected to the inner side of the limiting channel, Figure 6As shown, the limiting mechanism 20 also includes a locking member 24, which is detachably connected to the limiting channel, and one end of the elastic member 23 away from the limiting ball 21 is connected or abutted with the locking member 24. That is, one end of the limiting channel is closed by the locking member 24, and the locking member 24 forms a detachable connection relationship with the inside of the limiting channel, which not only facilitates the installation of the elastic member 23, but also facilitates disassembly and subsequent replacement of parts. It is worth noting that in this embodiment, the locking member 24 is a bolt, and the inner wall of the limiting channel is provided with a thread, and the bolt can be threadedly connected with the inner wall of the limiting channel, thereby forming a simple and firm detachable connection relationship.

[0049] like Figure 6 As shown, the limit seat 22 is provided with a plurality of mounting holes 221, and the mounting member can be detachably connected to the outer periphery of the output assembly 12 through the mounting holes 221. The plurality of mounting holes 221 can ensure that the limit seat 22 is firmly mounted on the base 40, thereby ensuring that the limit seat 22 will not shake during the process of the limit ball 21 slidingly abutting against the output shaft 121, thereby generating a good limit relationship, thereby ensuring the safety of operation.

[0050] It should be noted that the mounting member can be any structure such as a screw or a pin, as long as it is easy to install and disassemble and can produce a firm connection. It should be further noted that the plurality of mounting holes 221 are symmetrically distributed along the two sides of the limiting channel. This structure can ensure that the left and right sides of the limiting seat 22 can be equally stressed, thereby achieving a better fixing effect.

[0051] Combined with the accompanying drawings, the operation method of the load switch in this embodiment is described:

[0052] Assume that the load switch is in Figure 1 When the switch is in the closing position shown in the figure, the input shaft 111 must be rotated clockwise first. The input shaft 111 can drive the transmission member 112 to rotate together with the rotation of the input shaft 111, and the transmission member 112 gradually compresses the energy storage spring 13. At the same time, the limiting groove 124 can push the limiting ball 21 to compress the elastic member 23 until the limiting ball 21 is separated from the limiting groove 124 and slides against the outer periphery of the output shaft 121. Figure 2 After the dead point position is reached, the elastic potential energy of the energy storage spring 13 can assist in pushing the transmission member 112, and the transmission member 112 pushes the transmission pin 122 to rotate together with the output shaft 121, until the transmission part 123 abuts against the limit shaft 30, and the load switch reaches the dead point position. Figure 3 In the open position shown, the energy storage spring 13 is again in a stretched state, and the limiting ball 21 just falls into another limiting groove 124, and again limits and fixes the output shaft 121. To go from the open position to the closed position, the above method can be applied in reverse.

[0053] In summary, by using the load switch in this embodiment, the limiting mechanism 20 can limit the output shaft 121 at the open position or the closed position, effectively solving the problem of the output component 12 rebounding.

[0054] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A load switch, characterized in that: include: A switch mechanism (10) is arranged at a preset work position, the switch mechanism (10) comprising an input component (11) and an output component (12) which are coaxially arranged, the output component (12) having an opening position and a closing position, the input component (11) being capable of driving the output component (12) to rotate around its own axis so that the output component (12) switches between the opening position and the closing position; The limiting mechanism (20) is capable of extending and retracting in a first direction, and when the output component (12) is in the opening position or the closing position, the limiting end of the limiting mechanism (20) can abut against the outer periphery of the output component (12) so that the output component (12) cannot rebound.

2. The load switch according to claim 1, characterized in that: The input component (11) comprises an input shaft (111) and a transmission member (112), wherein the transmission member (112) is arranged on the outer periphery of the input shaft (111) and can rotate synchronously with the transmission member (112); the output component (12) comprises an output shaft (121) and a transmission pin (122), wherein the output shaft (121) is provided with a transmission portion (123) protruding in a radial direction, and the transmission pin (122) is arranged on the transmission portion (123), and the transmission member (112) can abut against and drive the transmission pin (122) to rotate, so that the transmission pin (122) drives the output shaft (121) to rotate.

3. The load switch according to claim 2, characterized in that: Two limiting grooves (124) are arranged on the outer circumference of the output shaft (121); when the output shaft (121) is in the opening position or the closing position, the limiting end can correspondingly abut against one of the limiting grooves (124).

4. The load switch according to claim 3, characterized in that: The limiting groove (124) is a circular semi-groove, and the limiting end is a limiting ball (21).

5. The load switch according to claim 4, characterized in that: The limiting mechanism (20) further comprises a limiting seat (22) and an elastic member (23); a limiting channel is formed inside the limiting seat (22); the elastic member (23) is arranged in the limiting channel, and one end of the elastic member (23) is connected to or abuts against a side of the limiting channel away from the output shaft (121); the limiting ball (21) is located in the limiting channel, and is connected to or abuts against the other end of the elastic member (23); the elastic force of the elastic member (23) can cause the limiting ball (21) to abut against the outer periphery of the output shaft (121).

6. The load switch according to claim 5, characterized in that: The limiting mechanism (20) further comprises a locking member (24), wherein the locking member (24) is detachably connected to the limiting channel, and an end of the elastic member (23) away from the limiting ball (21) is connected to or abuts against the locking member (24).

7. The load switch according to claim 6, characterized in that: The limiting seat (22) is provided with a plurality of mounting holes (221), and the mounting member can detachably connect the limiting seat (22) to the outer periphery of the output assembly (12) through the mounting holes (221).

8. The load switch according to claim 7, characterized in that: The plurality of mounting holes (221) are symmetrically distributed along two sides of the limiting channel.

9. The load switch according to any one of claims 2 to 8, characterized in that: Two arc-shaped abutment portions (1121) are arranged at intervals on the outer circumference of the transmission member (112); the two arc-shaped abutment portions (1121) can abut against and push the transmission pin (122) in turn, so that the output shaft (121) switches between the opening position and the closing position.

10. The load switch according to any one of claims 2 to 8, characterized in that: A limit shaft (30) is provided at both the opening position and the closing position, and when the output shaft (121) rotates to the opening position or the closing position, the transmission part (123) can abut against the limit shaft (30).

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