Rotary switch with supporting mechanism

Abstract

The utility model specifically discloses a rotary switch with a supporting mechanism. The supporting mechanism comprises a rotatable supporting piece and a third elastic piece acting on the supporting piece. The supporting piece is provided with an upper supporting face, a lower supporting face and a receding inclined face. When the movable frame moves downwards, the lower end face of the movable frame makes contact with the receding slope of the supporting piece, the supporting piece is pushed to rotate to the lying state, and the third elastic piece stores energy. When the movable frame moves upwards, the supporting piece moves and rotates to a standing state under the energy release of the third elastic piece, the upper supporting face of the supporting piece acts on the movable contact frame, the lower supporting face of the supporting piece acts on the installation assembly, and the supporting piece supports the movable contact frame on the installation assembly. When the rotary switch is in an on state, the third elastic piece drives the supporting piece to always keep a supporting effect on the movable contact frame assembly, so that the effect of bearing the pressure of the movable contact frame is achieved, the damage of the limiting piece to the limiting bulge is reduced or eliminated, and the service life of the switch is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of disconnecting switch, specifically discloses a rotary switch with supporting mechanism. BACKGROUND

[0002] Disconnecting switch is a kind of switch equipment for explicitly showing circuit disconnect state, it can provide visible disconnect point in circuit, to ensure that circuit is in safe disconnect state when maintaining or overhauling.Disconnecting switch is various, including knife switch type, pull pin type, rotary type etc., among them, rotary disconnecting switch is named according to its operating mode, that is, through rotary action to realize the connection and disconnection of circuit.Rotary disconnecting switch is widely used in industry, power system and automation control field because of its compact structure and simple operation.

[0003] Patent CN106057544B discloses a sudden jump rotary switch, the switch is internally provided with quick action mechanism, aims at realizing quick contact or disconnection through mechanical connection relationship, reduces the interference of artificial operation to internal mechanism action.The design realizes the quick connection or disconnection locking of switch through the interaction of limiting piece and limiting protrusion of middle seat, effectively avoids the ablation of electric arc to contact, improves the life of product.

[0004] However, in the long-term operation, the quick action mechanism will generate pressure to limiting protrusion when switch breaks, causing the upper limiting surface of limiting protrusion to gradually change from horizontal plane to inclined plane.This change makes the limiting piece receive the component force of inclined plane when stagnating, under external force, it can cause the limiting piece to move into guide groove, thereby losing the locking of moving contact frame assembly.This failure condition can cause moving contact and static contact to slowly separate before quick action, reduce contact pressure, or appear the state of seemingly connected but not connected, and further cause the arc phenomenon between contacts.The ablation of electric arc can reduce the service life of switch, and even can cause safety accident.

[0005] In order to overcome the above-mentioned deficiencies of rotary switch, provide a rotary switch with supporting mechanism, aim to improve the service life of rotary switch, avoid the arc phenomenon, improve the reliability and safety of rotary switch. UTILITY MODEL CONTENT

[0006] The utility model aims at overcoming the insufficient prior art, provides a rotary switch with supporting mechanism.

[0007] The utility model discloses a rotary switch with supporting mechanism adopts the following technical scheme:

[0008] A rotary switch with supporting mechanism, comprising:

[0009] Mounting assembly, as mounting frame, is internally provided with limiting protrusion;

[0010] The static contact assembly comprises a static contact arranged in the mounting assembly;

[0011] The moving contact assembly comprises a moving contact frame and a moving contact arranged on the moving contact frame; the moving contact frame moves linearly in the mounting assembly to drive the moving contact to move towards or away from the static contact;

[0012] The quick action mechanism comprises a movable frame, a limiting member and a first elastic member; the movable frame moves in the direction parallel to the moving direction of the moving contact frame; the first elastic member drives the limiting member to move towards the limiting protrusion, and the limiting member and the limiting protrusion cooperate to limit the movement of the moving contact frame; the second elastic member is arranged between the movable frame and the moving contact frame;

[0013] The driving mechanism comprises a rotating shaft arranged on the mounting assembly and connected with the movable frame; the rotating shaft rotates to drive the movable frame to move relative to the moving contact frame to store energy in the second elastic member; the movement of the movable frame drives the limiting member to be unlocked from the limiting protrusion, and the moving contact frame moves under the release of the second elastic member to drive the moving contact to be connected with or disconnected from the static contact;

[0014] The supporting mechanism comprises a rotatable supporting member and a third elastic member acting on the supporting member; the supporting member has an upper supporting surface, a lower supporting surface and a retreat inclined surface;

[0015] When the movable frame moves downward, the lower end surface of the movable frame contacts the retreat inclined surface of the supporting member, drives the supporting member to rotate to a lying state and stores energy in the third elastic member;

[0016] When the movable frame moves upward, the supporting member moves and rotates to a standing state under the release of the third elastic member; the upper supporting surface of the supporting member acts on the moving contact frame, the lower supporting surface of the supporting member acts on the mounting assembly, and the supporting member supports the moving contact frame on the mounting assembly.

[0017] Preferably, the supporting member is rotatable by being hinged to the bottom of the moving contact frame.

[0018] Preferably, the supporting member comprises a supporting body, a connecting block, a retreat inclined block and a supporting block arranged on the supporting body; the connecting block is located at one end of the supporting body and is hinged to the moving contact frame by a pin shaft, the lower supporting surface is located at the other end of the supporting body, the retreat inclined surface is arranged on the retreat inclined block, and the upper supporting surface is arranged on the supporting block.

[0019] Preferably, the third elastic member is a torsion spring, the supporting body is provided with a recessed surface, the lower end surface of the moving contact frame is provided with a groove, one end of the torsion arm of the third elastic member abuts against the recessed surface, and the other end of the torsion arm abuts against the groove.

[0020] Preferably, when the movable frame is in the highest position, a gap is left between the lower end surface of the movable frame and the retreat slope of the support.

[0021] Preferably, the second elastic member is a spring, the movable frame is provided with a spring mounting groove for mounting the second elastic member, the spring mounting groove is provided with upper and lower end surfaces for abutting against the second elastic member, a movable contact frame provided on one side of the lower end surface of the spring mounting groove is provided with a positioning groove, at least part of the side edge of the second elastic member protrudes from the side of the spring mounting groove and is located above the positioning groove, and when the movable frame moves downward, the lower end of the second elastic member abuts against the positioning groove.

[0022] Preferably, a sliding groove is formed on the upper end surface of the spring mounting groove, the sliding groove extends in a direction parallel to the movement line of the movable contact frame, the movable contact frame is fixedly provided with a positioning pin penetrating the sliding groove, and when the movable frame moves upward, the upper end of the second elastic member abuts against the positioning pin.

[0023] Preferably, the movable frame is provided with a first unlocking protrusion and a second unlocking protrusion, the first unlocking protrusion and the second unlocking protrusion are respectively provided with a first unlocking slope and a second unlocking slope.

[0024] When the movable frame moves downward, the first unlocking slope pushes the limiting member and the upper end surface of the limiting protrusion to be unlocked, and when the movable frame moves upward, the second unlocking slope pushes the limiting member and the lower end surface of the limiting protrusion to be unlocked.

[0025] Preferably, the movable contact frame is provided with a guide groove extending in a direction perpendicular to the movement line of the movable contact frame, and the limiting member moves under the limitation of the guide groove.

[0026] Preferably, the mounting assembly comprises a base, an outer shell and a middle seat, the middle seat is fixed between the base and the outer shell, and the limiting protrusion is arranged on the middle seat.

[0027] Compared with the prior art, the utility model at least has the following beneficial effects:

[0028] 1) By arranging the support mechanism on the base of the rotary switch, when the rotary switch is in the on state, the third elastic member drives the support member to always keep the support effect on the movable contact frame assembly, thereby playing the role of bearing the pressure of the movable contact frame, reducing or eliminating the damage of the limiting member to the limiting protrusion, and improving the service life of the switch.

[0029] 2) The support mechanism has few parts, simple structure and easy installation. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a structure exploded view of the rotary switch of the embodiment.

[0031] Figure 2 Assembled view of the moving contact assembly, quick action mechanism and driving mechanism of the present embodiment;

[0032] Figure 3 Structure exploded view of the moving contact assembly, quick action mechanism and driving mechanism of the present embodiment;

[0033] Figure 4 Structure view of the middle seat and limiting protrusion of the present embodiment;

[0034] Figure 5 Structure view of the movable frame of the present embodiment;

[0035] Figure 6 Structure view of the support of the present embodiment;

[0036] Figure 7 Structure view of the support mechanism of the present embodiment;

[0037] Figure 8 Partial perspective view of the rotary switch in the on state of the present embodiment;

[0038] Figure 9 Structure view of the support in the standing state of the present embodiment;

[0039] Figure 10 Partial structure view of the rotary switch in the off state of the present embodiment;

[0040] Figure 11 Structure view of the support in the lying state of the present embodiment;

[0041] Figure 12 Structure view of the rotary switch in the action process (1) of the present embodiment;

[0042] Figure 13 Structure view of the rotary switch in the action process (2) of the present embodiment;

[0043] Figure 14 Structure view of the rotary switch in the action process (3) of the present embodiment;

[0044] Figure 15 Structure view of the rotary switch in the action process (4) of the present embodiment.

[0045] BRIEF DESCRIPTION OF THE DRAWINGS

[0046] 1, base; 2, outer shell; 3, middle seat; 4, limiting protrusion; 41, upper limiting surface; 42, lower limiting surface; 5, static contact; 6, moving contact frame; 61, guide groove; 62, positioning groove; 63, positioning pin; 7, moving contact; 8, movable frame; 81, spring mounting groove; 82, first unlocking slope; 83, second unlocking slope; 84, sliding groove; 9, limiting piece; 10, first elastic piece; 11, second elastic piece; 12, rotating shaft; 13, supporting piece; 131, connecting block; 132, yielding slope; 133, upper supporting surface; 134, lower supporting surface; 135, recessed surface; 14, third elastic piece; 15, pin shaft. DETAILED DESCRIPTION

[0047] In order to make the above-mentioned purpose, features and advantages of the utility model more apparent, comprehensible and easier to understand, the utility model will be further explained in detail below by combining with the drawings and specific embodiments.

[0048] The embodiment discloses a rotary switch with a supporting mechanism, which comprises a mounting assembly, a static contact assembly, a moving contact frame assembly, a quick action mechanism and a driving mechanism.

[0049] Reference Figures 1-5 The mounting assembly serves as a mounting frame and comprises a base 1, an outer shell 2 and a middle seat 3. The middle seat 3 is fixed between the base 1 and the outer shell 2. The middle seat 3 is provided with a limiting protrusion 4. The limiting protrusion 4 has an upper limiting surface 41 and a lower limiting surface 42.

[0050] The static contact assembly comprises a static contact 5 arranged in the mounting assembly.

[0051] The moving contact frame assembly comprises a moving contact frame 6 and a moving contact 7 arranged on the moving contact frame 6. The moving contact 7 is located below the static contact 5. The moving contact frame 6 moves linearly in the mounting assembly to drive the moving contact 7 to move towards or away from the static contact 5.

[0052] The quick action mechanism comprises a movable frame 8, a limiting piece 9 and a first elastic piece 10. The movable frame 8 moves in the direction parallel to the movement linear direction of the moving contact frame 6 in the moving contact frame 6. The first elastic piece 10 drives the limiting piece 9 to move towards the limiting protrusion 4. The limiting piece 9 and the limiting protrusion 4 cooperate to limit the movement of the moving contact frame 6. Specifically, the moving contact frame 6 is provided with a guide groove 61 extending perpendicularly to the movement linear direction of the moving contact frame 6. The limiting piece 9 is arranged in the guide groove 61 in the form of a shaft. The limiting piece 9 can only move horizontally under the limitation of the guide groove 61. The first elastic piece 10 is a torsional spring arranged on the shaft-shaped limiting piece 9. The two ends of the torsional spring are arranged in the middle seat 3, so that the limiting piece 9 moves towards the limiting protrusion 4 under the action of the first elastic piece 10.

[0053] The second elastic member 11 is arranged between the movable frame 8 and the movable contact frame 6 and connects the movable frame 8 and the movable contact frame 6. Specifically, the second elastic member 11 is a spring, and the movable frame 8 is provided with a spring mounting groove 81 for mounting the second elastic member 11, the spring mounting groove 81 being provided with upper and lower end faces for abutting against the second elastic member 11. The movable contact frame 6 on the side of the lower end face of the spring mounting groove 81 is provided with a positioning groove 62, and at least part of the side edge of the second elastic member 11 protrudes from the side of the spring mounting groove 81 and is located above the positioning groove 62. When the movable frame 8 is driven to move downward, the upper end of the second elastic member 11 abuts against the upper end face of the spring mounting groove 81 and descends with the movable frame 8, and the lower end of the second elastic member 11 abuts against the positioning groove 62 of the movable contact frame 6 and remains stationary, so that the second elastic member 11 between the movable frame 8 and the movable contact frame 6 is compressed. In addition, a sliding groove 84 extending in a direction parallel to the movement straight line of the movable contact frame 6 is formed on the upper end face of the spring mounting groove 81, and the movable contact frame 6 is fixedly provided with a positioning pin 63 penetrating the sliding groove 84. When the movable frame 8 is driven to move upward, the lower end of the second elastic member 11 abuts against the lower end face of the spring mounting groove 81 and ascends with the movable frame 8, and the upper end of the second elastic member 11 abuts against the positioning pin 63 of the movable contact frame 6 and remains stationary, so that the second elastic member 11 between the movable frame 8 and the movable contact frame 6 is compressed.

[0054] The driving mechanism includes a rotating shaft 12 and a knob (not shown in the figure) assembled on the rotating shaft 12, the rotating shaft 12 is mounted between the middle seat 3 and the outer shell 2 and connected with the movable frame 8, the rotating shaft 12 rotates to drive the movable frame 8 to move upward and downward relative to the movable contact frame 6, so as to store energy for the second elastic member 11; the movable frame 8 moves to push the limiting member 9 and the limiting protrusion 4 to be unlocked, and the movable contact frame 6 moves under the energy release of the second elastic member 11 to drive the movable contact 7 and the static contact 5 to be connected or disconnected. Specifically, the movable frame 8 is provided with a first unlocking protrusion and a second unlocking protrusion, and the first unlocking protrusion and the second unlocking protrusion are respectively provided with a first unlocking slope 82 and a second unlocking slope 83. The limiting protrusion 4 has a locking effect on the limiting member 9, and when the limiting member 9 is located on the upper limiting face 41 of the limiting protrusion 4, the switch is in the connected state; when the limiting member 9 is located on the lower limiting face 42 of the limiting protrusion 4, the switch is in the disconnected state. When the movable frame 8 is driven to move downward, the first unlocking slope 82 pushes the limiting member 9 and the upper limiting face 41 (i.e. the upper end face) of the limiting protrusion 4 to be unlocked; when the movable frame 8 is driven to move upward, the second unlocking slope 83 pushes the limiting member 9 and the lower limiting face 42 (i.e. the lower end face) of the limiting protrusion 4 to be unlocked.

[0055] Referring to Figures 6-11The rotary switch of the present application further comprises a supporting mechanism, which comprises a supporting piece 13 and a third elastic piece 14. The supporting piece 13 is hingedly connected to the bottom of the movable contact holder 6, the bottom of the movable holder 8 or the base 1, so as to be rotatable in the gap on the base 1. The third elastic piece 14 acts on the supporting piece 13, so as to provide a reset function for the supporting piece 13. Specifically, the supporting piece 13 comprises a supporting body, a connecting block 131, a retreat inclined block and a supporting block provided on the supporting body. The connecting block 131 is located at one end of the supporting body and is hingedly connected by a pin 15. The other end of the supporting body is provided with a lower supporting surface 134. The retreat inclined block is provided with a retreat inclined surface 132. The supporting block is provided with an upper supporting surface 133.

[0056] When the movable holder 8 is driven downward by the driving mechanism, the lower end surface of the movable holder 8 contacts the retreat inclined surface 132 of the supporting piece 13, so as to push the supporting piece 13 to rotate to a lying state and store energy in the third elastic piece 14. When the movable holder 8 is driven upward by the driving mechanism, the supporting piece 13 is driven to move and rotate to a standing state under the energy release of the third elastic piece 14. The upper supporting surface 133 of the supporting piece 13 acts on the supporting surface of the movable contact holder 6. The lower supporting surface 134 of the supporting piece 13 acts on the base 1. Thus, under the driving of the third elastic piece 14, the supporting piece 13 always abuts against the bottom surface of the base 1 in the on state of the switch, so as to support the movable contact holder 6 and reduce or eliminate the pressure of the limiting piece 9 on the limiting protrusion 4.

[0057] As a preferred solution, the pin 15 on the connecting block 131 of the supporting piece 13 is hingedly connected to the bottom of the movable contact holder 6, so as to be rotatable. The third elastic piece 14 is a torsion spring. The supporting body of the supporting piece 13 is provided with a recessed surface 135 on one side. The lower end surface of the movable contact holder 6 is provided with a groove. One end of the torsion arm of the third elastic piece 14 abuts against the recessed surface 135. The other end of the torsion arm abuts against the groove. By using the above design, the bottom space of the movable contact holder 6 is fully utilized. Moreover, the supporting mechanism and the movable contact holder assembly form an assembly whole, which is beneficial to improve the assembly efficiency.

[0058] As a preferred solution, when the movable frame 8 is in the highest position, a gap is left between the lower end face of the movable frame 8 and the retreat slope 132 of the support 13. By adopting the above design, when it is required to turn on the rotary switch, the rotary shaft 12 is rotated to drive the movable frame 8 to move upward until the limit piece 9 moves to the edge limit of the limit protrusion 4, at this time, the movable frame 8 has moved a certain distance, which is regarded as a buffer stroke, when the limit piece 9 is unlocked from the limit protrusion 4, the movable contact frame 6 is jumped up under the action of the second elastic piece 11, thereby driving the movable contact 7 to contact the static contact 5 to connect the circuit, at the same time, the support 13 is lifted away from the base 1 along with the movable contact frame 6, and the third elastic piece 14 is released to make the support 13 quickly rotate from the lying state to the standing state. Since the buffer stroke exists between the support 13 and the movable frame 8, the buffer stroke avoids the hard impact of the support 13 on the movable frame 8 when the support 13 is quickly rotated, thereby reducing the wear problem of the lower end face of the movable frame 8 caused by the impact in long-term operation, not only greatly improving the service life of the support 13, but also further improving the reliability of the rotary switch.

[0059] The action process of the rotary switch with the support mechanism is as follows:

[0060] (1) see Figure 12 , the rotary switch is in the on state, the movable contact 7 is in contact with the static contact 5, at this time, the movable frame 8 is in the highest position, the limit piece 9 is located on the upper limit surface 41 of the limit protrusion 4 of the middle seat 3 under the action of the first elastic piece 10, thereby locking the movable contact frame 6, and the support 13 is in the standing state under the action of the third elastic piece 14, thereby supporting the movable contact frame assembly;

[0061] (2) see Figure 13 , the rotary shaft 12 is rotated, the movable frame 8 moves towards the bottom surface of the base 1, after moving a certain distance, the bottom side edge of the movable frame 8 is in contact with the retreat slope 132 of the support 13, the support 13 is rotated by pushing the retreat slope 132, and the second elastic piece 11 between the movable frame 8 and the movable contact frame 6 is compressed to store energy;

[0062] (3) see Figure 14 , the movable frame 8 continues to move downward, the supporting effect of the support 13 between the bottom surface of the base 1 and the movable contact frame 6 is eliminated, and the second elastic piece 11 continues to compress and store energy;

[0063] (4) see Figure 15, the first unlocking slope 82 of the movable frame 8 pushes the limiting piece 9 to move in the guide groove 61 of the movable contact frame 6 and to be away from the position of the limiting protrusion 4, so that the limiting protrusion 4 is unlocked to the limiting piece 9, at this time, the second elastic piece 11 releases energy and drives the movable contact frame assembly to move away from the fixed contact 5, the movable contact 7 and the fixed contact 5 are disconnected, the limiting piece 9 moves from the guide groove 61 to the direction of the limiting protrusion 4 under the action of the first elastic piece 10, and is located on the lower limiting surface 42 of the limiting protrusion 4, so that the movable contact frame 6 is locked, the switch is in the disconnected state, and the supporting piece 13 is in the lying state, and the third elastic piece 14 accumulates energy;

[0064] (5) the rotating shaft 12 is rotated in the opposite direction, the movable frame 8 moves away from the bottom surface of the base 1, the second elastic piece 11 is compressed and accumulates energy, after moving to a certain distance, the second unlocking slope 83 of the movable frame 8 pushes the limiting piece 9 to be unlocked to the limiting protrusion 4, at this time, the second elastic piece 11 releases energy and drives the movable contact frame assembly to move close to the fixed contact 5, the movable contact 7 and the fixed contact 5 are connected, and the third elastic piece 14 releases energy and drives the supporting piece 13 to rotate to the standing state, and the switch is restored to the connected state of step (1), and the upper supporting surface 133 of the supporting piece 13 is supported on the supporting surface of the movable contact frame 6, so that the movable contact frame assembly is always supported on the base 1 in the connected state.

[0065] The technical scheme provided by the utility model is described in detail, the principle and implementation mode of the utility model are described by applying specific examples, and the description of the above examples is only used to help understand the method and core idea of the utility model; meanwhile, according to the idea of the utility model, the specific implementation mode and application range can be changed by the general technical personnel in the field, and according to the above, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A rotary switch with a supporting mechanism, comprising: a mounting assembly as a mounting frame, with a limiting protrusion inside; a stationary contact assembly, including a stationary contact inside the mounting assembly; a movable contact frame assembly, including a movable contact frame and a movable contact on the movable contact frame; the movable contact frame moves linearly inside the mounting assembly to drive the movable contact to move towards or away from the stationary contact; a quick action mechanism, including a movable frame, a limiting member and a first elastic member; the movable frame moves in a direction parallel to the movement linear direction of the movable contact frame; the first elastic member drives the limiting member to move towards the limiting protrusion, the limiting member and the limiting protrusion cooperate to limit the movement of the movable contact frame; a second elastic member is arranged between the movable frame and the movable contact frame; a driving mechanism, including a rotary shaft arranged on the mounting assembly and connected with the movable frame, the rotary shaft rotates to drive the movable frame to move relative to the movable contact frame to store energy in the second elastic member; the movement of the movable frame drives the limiting member to unlock the limiting protrusion, the movable contact frame moves under the release of the second elastic member to drive the movable contact to connect or disconnect with the stationary contact; characterized in that it further comprises: a supporting mechanism, including a rotatable supporting member and a third elastic member acting on the supporting member; the supporting member has an upper supporting surface, a lower supporting surface and a retreat inclined surface; when the movable frame moves downward, the lower end surface of the movable frame contacts the retreat inclined surface of the supporting member, drives the supporting member to rotate to a lying state and stores energy in the third elastic member; when the movable frame moves upward, the supporting member moves and rotates to a standing state under the release of the third elastic member, the upper supporting surface of the supporting member acts on the movable contact frame, the lower supporting surface of the supporting member acts on the mounting assembly, and the supporting member supports the movable contact frame on the mounting assembly.

2. The rotary switch with a support mechanism according to claim 1, characterized by, The supporting member is rotatable by being hinged to the bottom of the movable contact frame.

3. The rotary switch with support mechanism according to claim 2, characterized in that The supporting member includes a supporting body and a connecting block, a retreat inclined block and a supporting block arranged on the supporting body; the connecting block is located at one end of the supporting body and is hinged to the movable contact frame by a pin shaft, the lower supporting surface is located at the other end of the supporting body, the retreat inclined surface is arranged on the retreat inclined block, and the upper supporting surface is arranged on the supporting block.

4. The rotary switch with support mechanism according to claim 3, characterized in that The third elastic member is a torsion spring, the supporting body is provided with a recessed surface, the lower end surface of the movable contact frame is provided with a groove, one end of the torsion arm of the third elastic member abuts against the recessed surface, and the other end of the torsion arm abuts against the groove.

5. The rotary switch with support mechanism according to claim 1, characterized in that, When the movable frame is at the highest position, a gap is left between the lower end surface of the movable frame and the retreat inclined surface of the supporting member.

6. The rotary switch with support mechanism according to claim 1, characterized in that, The second elastic member is a spring, the movable frame has a spring mounting groove for mounting the second elastic member, the spring mounting groove has upper and lower end surfaces for abutting against the second elastic member; the movable contact frame at one side of the lower end surface of the spring mounting groove is provided with a positioning groove, at least part of the side edge of the second elastic member protrudes from the side of the spring mounting groove and is located above the positioning groove, and when the movable frame moves downward, the lower end of the second elastic member abuts against the positioning groove.

7. The rotary switch with support mechanism according to claim 6, characterized in that An upper end surface of the spring mounting groove is formed with a sliding groove extending parallel to a movement straight line of the moving contact holder, and the moving contact holder is fixedly provided with a positioning pin penetrating the sliding groove, and an upper end of the second elastic member abuts against the positioning pin when the movable holder moves upward.

8. The rotary switch with support mechanism according to claim 1, characterized in that, The movable holder is provided with a first unlocking protrusion and a second unlocking protrusion, and the first unlocking protrusion and the second unlocking protrusion are respectively provided with a first unlocking slope and a second unlocking slope. When the movable holder moves downward, the first unlocking slope pushes the limiting member to unlock the upper end surface of the limiting protrusion, and when the movable holder moves upward, the second unlocking slope pushes the limiting member to unlock the lower end surface of the limiting protrusion.

9. The rotary switch with support mechanism according to claim 1, characterized in that, The moving contact holder is provided with a guide groove extending perpendicularly to the movement straight line of the moving contact holder, and the limiting member moves under the limitation of the guide groove.

10. The rotary switch with support mechanism according to claim 1, characterized in that, The mounting assembly comprises a base, an outer shell and a middle seat, the middle seat is fixed between the base and the outer shell, and the limiting protrusion is arranged on the middle seat.

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