Combination switch

Abstract

The utility model discloses a combination switch, which belongs to the technical field of power switches and comprises a flame-retardant switch box, a lifting frame is integrally arranged above the flame-retardant switch box, a main shaft is rotatably connected in the lifting frame through a waterproof bearing, and a mistaken touch prevention structure of which the surface main shaft rotates when being mistakenly touched is arranged between the main shaft and the lifting frame. The mistaken touch prevention structure comprises a positioning concave part, a sliding groove, a rotating handle, a positioning convex part and a telescopic rod. According to the utility model, the sealing rubber strip enters the waterproof recess to achieve the purpose of sealing and waterproofing, and finally the air bag is inflated through the valve core, so that the air bag expands to be in close contact with the outer surface of the lead, thereby achieving the purpose of waterproofing, further improving the waterproof effect, and utilizing the tension spring to pull the telescopic rod to return. And the purpose of preventing mistaken touch rotation is achieved, and the use safety of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric switches, and specifically relates to a combined switch. Background Art

[0002] A combined switch, also known as a change-over switch, is often used as a switch for power supply introduction in an electrical control circuit. The combined switch consists of moving contacts, static contacts, a rotating shaft, a handle, a positioning mechanism, a housing, etc. The moving contacts and static contacts are respectively stacked between several layers of insulating pads, and each is attached with a terminal for connecting a circuit. When the handle is rotated, the moving contacts of each layer rotate together with the square rotating shaft, thereby realizing the on-off control of the circuit.

[0003] Among them, through retrieval, it is found that there is an application number CN202020581535.3 for a waterproof device of a combined switch. This device can, while protecting the combined switch from water through a waterproof cylinder, connect one end of an external connecting wire to a connector and the other end to an external electrical device through a round hole or a semi-circular hole without affecting the use of the combined switch. However, its deficiencies are as follows:

[0004] Existing switches can waterproof the contacts, but the waterproof effect on the wires in contact with the contacts needs to be strengthened. If water enters the connection terminal along the wire, there will also be potential safety hazards. At the same time, the existing switch handle cannot be effectively fixed after rotation, which may cause accidental touch when the switch handle is subjected to other external forces. Also, a better torque feel can be given to the switch handle to provide better force feedback for the user. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a new combined switch to solve the above problems.

[0006] The technical solution adopted by the utility model is as follows: A combined switch includes a flame-retardant switch box. An elevation frame is integrally provided above the flame-retardant switch box. A main shaft is rotatably connected to the inside of the elevation frame through a waterproof bearing. An anti-misoperation structure for preventing the main shaft from being accidentally touched and rotated is provided between the main shaft and the elevation frame.

[0007] The anti-misoperation structure includes a positioning concave, a chute, a rotating handle, a positioning convex, and a telescopic rod.

[0008] A chute is embedded in the upper end surface of the main shaft. A telescopic rod is installed inside the chute. The two telescopic ends of the telescopic rod are connected by a tension spring. The other end of the telescopic rod is fixedly installed with a rotating handle. The bottom of the rotating handle is symmetrically installed with positioning convexes. A positioning concave is embedded in the surface of the elevation frame near the lower part of the rotating handle.

[0009] The main shaft is successively installed with a moving contact and an isolation disc from top to bottom. The end face of the isolation disc is embedded with a limited-slip groove. The side wall of the flame-retardant switch box is penetrated with a static contact, and a wire-pressing end cover is installed above the static contact through bolts;

[0010] A support frame is installed on the inner wall of the flame-retardant switch box. Spring push rods are fixedly installed on both the upper and lower sides of the support frame. The movable end of the spring push rod is rotatably connected with a sliding sphere;

[0011] The outer wall of the flame-retardant switch box is movably connected with a waterproof end cover, and a waterproof mechanism for waterproofing the wire is arranged on the waterproof end cover.

[0012] Among them, the waterproof mechanism includes a waterproof concave, a wire-passing hole, an airbag, a sealing rubber strip, an anti-detachment bolt, and a valve core;

[0013] The front of the waterproof end cover is penetrated with a wire-passing hole. An airbag is closely attached inside the wire-passing hole. Sealing rubber strips are closely attached around the back of the waterproof end cover. Anti-detachment bolts are penetrated through the upper and lower ends of the waterproof end cover. A valve core is embedded on the surface of the waterproof end cover near the wire-passing hole side;

[0014] A waterproof concave is embedded on the side of the flame-retardant switch box, and the waterproof concave is hermetically sealed with the sealing rubber strip.

[0015] Among them, the positioning concave and the positioning convex fit. The number of positioning concaves is 4, which are arranged in a circular array, and the rotating handle is slidably connected with the sliding groove.

[0016] Among them, every two support frames correspond to two isolation discs. The isolation discs are symmetrically arranged, and the sliding sphere is in sliding contact with the limited-slip groove.

[0017] Among them, the number of limited-slip grooves on the surface of each isolation disc is two, and they are centrosymmetrically arranged. The two ends of the limited-slip groove are point a and point b respectively. The limited-slip groove takes the midpoint as the highest point and extends obliquely towards point a and point b.

[0018] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0019] 1. In the present utility model, the sealing rubber strip is used to enter the waterproof concave to achieve the purpose of sealing and waterproofing. Finally, the airbag is inflated through the valve core, and the airbag expands to make close contact with the outer surface of the wire to achieve the purpose of waterproofing, further improving the waterproof effect;

[0020] 2. In the present utility model, the tension spring is used to pull the telescopic rod back to its original position, so that the positioning convex and the positioning concave fit again, achieving the purpose of preventing accidental touch and rotation, and improving the safety of the device during use.

[0021] 3. In the present utility model, by setting the middle of the limited-slip groove to be the highest and points a and b to be the lowest, when the main shaft rotates, the sliding sphere contacts from the lowest point to the highest point. At this time, the torque generated by the main shaft gradually increases. When the isolation disc rotates 45°, the torque at the highest point of the limited-slip groove is reached, and then the sliding sphere moves from the highest point to the lowest point. This design makes the torque feel of the main shaft clearer during rotation and gives the user a better force feedback feeling. Brief Description of the Drawings

[0022] Figure 1 is a schematic diagram of the three-dimensional structure of the present utility model;

[0023] Figure 2 is a schematic diagram of the overall side-sectional structure in the present utility model;

[0024] Figure 3 In the present utility model Figure 2 is an enlarged schematic diagram of the structure at position A;

[0025] Figure 4 In the present utility model Figure 2 is an enlarged schematic diagram of the structure at position B;

[0026] Figure 5 is a schematic diagram of the limited-slip groove structure in the present utility model;

[0027] Figure 6 is a schematic diagram of the structure of the wire-pressing end cover in the present utility model.

[0028] Reference numerals in the figures: 1, flame-retardant switch box; 101, elevation frame; 1011, positioning recess; 102, waterproof recess; 2, main shaft; 201, chute; 202, waterproof bearing; 3, rotating handle; 301, positioning protrusion; 302, telescopic rod; 4, moving contact; 5, static contact; 501, wire-pressing end cover; 6, isolation disc; 601, limited-slip groove; 7, support frame; 701, spring push rod; 702, sliding sphere; 8, waterproof end cover; 801, wire-passing hole; 8011, airbag; 802, sealing strip; 803, anti-loosening bolt; 804, valve core. Detailed Embodiment

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0030] In the present utility model:

[0031] Reference Figures 1-6 A combined switch includes a flame-retardant switch box 1. An elevation frame 101 is integrally provided above the flame-retardant switch box 1. A main shaft 2 is rotatably connected to the inside of the elevation frame 101 through a waterproof bearing 202. An anti-mis-touch structure for preventing the main shaft 2 from being accidentally touched and rotated is provided between the main shaft 2 and the elevation frame 101;

[0032] The anti-mis-touch structure includes a positioning recess 1011, a sliding groove 201, a rotating handle 3, a positioning protrusion 301, and a telescopic rod 302;

[0033] The upper end surface of the main shaft 2 is embedded with a sliding groove 201. A telescopic rod 302 is installed inside the sliding groove 201. The two telescopic ends of the telescopic rod 302 are connected by a tension spring. The other end of the telescopic rod 302 is fixedly installed with a rotating handle 3. Two positioning protrusions 301 are symmetrically installed at the bottom of the rotating handle 3;

[0034] A positioning recess 1011 is embedded on the surface of the elevation frame 101 near the lower part of the rotating handle 3; the positioning recess 1011 fits with the positioning protrusion 301. The number of the positioning recesses 1011 is 4, which are arranged in a circular array. The rotating handle 3 is slidably connected to the sliding groove 201. When the main shaft 2 is rotated by 90°, first pull up the rotating handle 3, so that the rotating handle 3 moves upward in the sliding groove 201, and at the same time, the tension spring outside the telescopic rod 302 is stressed. At this time, the positioning protrusion 301 extends out of the positioning recess 1011, and then the main shaft 2 can be rotated. After the rotation of the main shaft 2 is completed, release the rotating handle 3. At this time, the tension spring pulls the telescopic rod 302 back to its original position, so that the positioning protrusion 301 fits with the positioning recess 1011 again, achieving the purpose of preventing accidental rotation.

[0035] The main shaft 2 is successively installed with a moving contact 4 and an isolation disc 6 from top to bottom. A limited-slip groove 601 is embedded on the end face of the isolation disc 6. A static contact 5 penetrates through the side wall of the flame-retardant switch box 1. A pressure terminal cover 501 is installed above the static contact 5 through a bolt; when the main shaft 2 rotates by 90°, both sides of the moving contact 4 can contact the static contact 5, thereby achieving the purpose of conducting electricity. The isolation disc 6 plays a role in isolating the instantaneous sparks generated by the arc.

[0036] A support frame 7 is installed on the inner wall of the flame-retardant switch box 1. Spring push rods 701 are fixedly installed on both the upper and lower sides of the support frame 7. The movable end of the spring push rod 701 is rotatably connected to a sliding sphere 702;

[0037] Preferably, every two support frames 7 correspond to two isolation discs 6. The isolation discs 6 are symmetrically arranged. The sliding spheres 702 are in sliding contact with the anti-slip grooves 601. When the main shaft 2 rotates, the isolation discs 6 will also rotate accordingly. At this time, the sliding spheres 702 are in sliding connection with the anti-slip grooves 601. The spheres can reduce the resistance generated when the isolation discs 6 rotate. There are support frames 7 on both sides of the isolation discs 6, and the sliding spheres 702 are in contact with the anti-slip grooves 601, so that the isolation discs 6 are more balanced when rotating.

[0038] Preferably, the number of anti-slip grooves 601 on the surface of each isolation disc 6 is two, and they are symmetrically arranged about the center. The two ends of the anti-slip groove 601 are point a and point b respectively. The anti-slip groove 601 extends obliquely towards point a and point b with the midpoint as the highest point. Since the middle of the anti-slip groove 601 is the highest and point a and point b are the lowest, when the main shaft 2 rotates, the sliding spheres 702 contact from the lowest point to the highest point. At this time, the torque generated by the main shaft 2 gradually increases. When the isolation disc 6 rotates 45°, the torque at the highest point of the anti-slip groove 601 is reached, and then the sliding spheres 702 move from the highest point to the lowest point. This design makes the torque feel of the main shaft 2 clearer when rotating.

[0039] The outer wall of the flame-retardant switch box 1 is movably connected with a waterproof end cover 8, and a waterproof mechanism for waterproofing the wire is arranged on the waterproof end cover 8.

[0040] Furthermore, the waterproof mechanism includes a waterproof recess 102, a wire passing hole 801, an airbag 8011, a sealing strip 802, an anti-loosening bolt 803, and a valve core 804;

[0041] The wire passing hole 801 is provided through the front of the waterproof end cover 8, and the airbag 8011 is closely attached inside the wire passing hole 801. The sealing strip 802 is closely attached to the periphery of the back of the waterproof end cover 8. The anti-loosening bolts 803 are provided through the upper and lower ends of the waterproof end cover 8. The valve core 804 is embedded on the surface of the waterproof end cover 8 near the wire passing hole 801 side;

[0042] The waterproof recess 102 is embedded on the side of the flame-retardant switch box 1, and the waterproof recess 102 and the sealing strip 802 are hermetically sealed.

[0043] Thread the wire through the wire passing hole 801, and then press the end of the wire against the pressure terminal cover 501 with a bolt. At this time, connect the waterproof end cover 8 and the flame-retardant switch box 1 with the anti-loosening bolt 803. At this time, the sealing strip 802 enters the waterproof recess 102 to achieve the purpose of sealing and waterproofing. Finally, inflate the airbag 8011 through the valve core 804, and the airbag 8011 expands and is in close contact with the outer surface of the wire to achieve the purpose of waterproofing.

[0044] Working principle: First, pass the wire through the wire threading hole 801, and then tighten the end of the wire and the pressure terminal cover 501 with bolts. At this time, connect the waterproof end cover 8 and the flame-retardant switch box 1 with the anti-loosening bolt 803. At this time, the sealing rubber strip 802 enters the waterproof recess 102 to achieve the purpose of sealing and waterproofing. Finally, inflate the airbag 8011 through the valve core 804. The airbag 8011 expands and makes close contact with the outer surface of the wire to achieve the purpose of waterproofing. Then, pull up the rotating handle 3, so that the rotating handle 3 moves upward in the sliding groove 201, and at the same time, the tension spring outside the telescopic rod 302 is stressed. At this time, the positioning protrusion 301 extends out of the positioning recess 1011, and the second main shaft can be rotated. After the main shaft 2 is rotated, release the rotating handle 3. At this time, the tension spring pulls the telescopic rod 302 back to its original position, so that the positioning protrusion 301 and the positioning recess 1011 fit again, achieving the purpose of preventing accidental rotation.

[0045] Meanwhile, when the main shaft 2 rotates, the isolation disc 6 will also rotate accordingly. At this time, the sliding sphere 702 is slidably connected with the anti-slip groove 601, and the sphere can reduce the resistance generated when the isolation disc 6 rotates. And the anti-slip groove 601 extends obliquely to points a and b with the midpoint as the highest point. Since the middle of the anti-slip groove 601 is the highest and points a and b are the lowest, when the main shaft 2 rotates, the sliding sphere 702 contacts from the lowest point to the highest point. At this time, the torque generated by the main shaft 2 gradually increases. When the isolation disc 6 is rotated 45°, the torque at the highest point of the anti-slip groove 601 is reached, and then the sliding sphere 702 moves from the highest point to the lowest point. This design makes the torque feel of the main shaft 2 clearer when rotating.

[0046] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A combination switch, comprising a flame retardant switch box (1), wherein a riser (101) is integrally provided above the flame retardant switch box (1), characterized in that: The interior of the lifting frame (101) is rotatably connected to a main shaft (2) via a waterproof bearing (202), and an anti-mis-touch structure is provided between the main shaft (2) and the lifting frame (101) to prevent the main shaft (2) from rotating if it is accidentally touched. The anti-mis-touch structure comprises a positioning recess (1011), a slide groove (201), a rotating handle (3), a positioning protrusion (301), and a telescopic rod (302); The upper end surface of the main shaft (2) is embedded with a slide groove (201), a telescopic rod (302) is installed inside the slide groove (201), a rotating handle (3) is fixedly installed at the other end of the telescopic rod (302), and a positioning protrusion (301) is symmetrically installed at the bottom of the rotating handle (3); A positioning recess (1011) is embedded in the surface of the lifting frame (101) near the bottom of the rotating handle (3); The main shaft (2) is provided with a moving contact (4) and an isolation disk (6) in sequence from top to bottom, and the end surface of the isolation disk (6) is embedded with a limited slip groove (601); A static contact (5) is provided through the side wall of the flame-retardant switch box (1), and a wire pressing end cover (501) is installed above the static contact (5) by means of bolts; A support frame (7) is installed on the inner wall of the flame-retardant switch box (1), and spring push rods (701) are fixedly installed on both the upper and lower sides of the support frame (7), and the movable end of the spring push rod (701) is rotatably connected to a sliding ball (702); The outer wall of the flame-retardant switch box (1) is movably connected to a waterproof end cover (8), and the waterproof end cover (8) is provided with a waterproof mechanism capable of waterproofing the wire.

2. The combination switch according to claim 1, characterized in that: The waterproof mechanism comprises a waterproof recess (102), a threading hole (801), an air bag (8011), a sealing strip (802), an anti-drop bolt (803), and a valve core (804); The front side of the waterproof end cover (8) is provided with a threading hole (801), the inside of the threading hole (801) is tightly fitted with an air bag (8011), the back side of the waterproof end cover (8) is tightly fitted with a sealing strip (802), the upper and lower ends of the waterproof end cover (8) are provided with anti-drop bolts (803), and the surface of the waterproof end cover (8) close to the threading hole (801) is embedded with a valve core (804); A waterproof recess (102) is embedded in the side of the flame-retardant switch box (1), and the waterproof recess (102) and the sealing strip (802) are fitted and sealed.

3. The combination switch according to claim 1, characterized in that: The positioning recess (1011) fits with the positioning protrusion (301), and there are four positioning recesses (1011) in a ring array, and the rotating handle (3) and the sliding groove (201) are slidably connected.

4. The combination switch according to claim 1, characterized in that: The telescopic ends of the telescopic rod (302) are connected via a tension spring.

5. The combination switch according to claim 1, characterized in that: Every two of the support frames (7) correspond to two isolation disks (6), the isolation disks (6) are symmetrically arranged, and the sliding balls (702) are in sliding contact with the slip-limiting grooves (601).

6. The combination switch according to claim 1, characterized in that: The number of the slip limiting grooves (601) on the surface of each isolation disk (6) is two and they are centrally symmetrically arranged. The two ends of the slip limiting groove (601) are point a and point b respectively. The slip limiting groove (601) takes the midpoint as the highest point and extends in an inclined plane toward point a and point b.

Images