CN217720013U - Coupler - Google Patents

Abstract

The utility model discloses a coupler, including last coupler and lower coupler, lower coupler includes: the single lower coupling groove is internally provided with a wide area and a narrow area; the output electric conductors are arranged on the thick wall sections to increase the creepage distance of the output electric conductors, and the output electric conductors in the lower coupling grooves are all located in the narrow region. The lower coupling groove of the utility model comprises a wide area and a narrow area, the wide area is convenient for water drainage and is adhered with water in the coupling groove, when the upper coupler and the lower coupler are matched, the narrow area limits the position of the upper coupler, and the input electric conductor and the output electric conductor can be ensured to be in close contact; the output conductor is arranged in the mounting groove of the thick-wall section, so that the creepage distance of the output conductor is increased, and the safety is improved; when the upper coupler and the lower coupler are separated, the power is cut off first and then the upper water inlet pipe and the lower water inlet pipe are separated, so that water is prevented from overflowing from the lower water inlet pipe.

Description

Coupler

Technical Field

The utility model belongs to the technical field of water heater, especially, relate to a coupler.

Background

At present, an electric coupler is widely used in an electric kettle or other appliance, and includes a lower coupler (also referred to as a lower connector) and an upper coupler (also referred to as an upper connector), a plurality of annular metal electrodes are arranged in the lower coupler and the upper coupler, and the lower coupler is inserted by the upper coupler to be electrically connected by the contact of the corresponding metal electrodes. In order to improve the convenience of using appliances such as a hot water kettle and the like, the coupler is provided with the water feeding device to guide liquid to enter the kettle body, the water feeding device comprises an upper water feeding assembly arranged in the upper coupler and a lower water feeding assembly arranged in the lower coupler, and the upper water feeding assembly is connected with and separated from the lower water feeding assembly along with the insertion and the separation of the upper coupler and the lower coupler.

However, the coupler is provided with the water inlet assembly, when the kettle is lifted, the lower water inlet assembly cannot stop water outlet in time or residual water still flows out, so that the residual water is accumulated on the lower coupler and cannot flow away or is adhered to the inner wall of the lower coupler due to the surface tension of the water, and when the lower coupler is used next time, the risk of electric leakage exists; when the upper coupler and the lower coupler are matched, the upper coupler and the lower coupler need to be electrically communicated through the contact of corresponding metal electrodes, but the coupling groove of the lower coupler is too large, so that the metal electrode of the upper coupler cannot be in contact conduction with the metal electrode of the lower coupler every time, or the metal electrode of the lower coupler loses elasticity and cannot be in contact with the metal electrode of the upper coupler, so that the problems of poor contact of the upper coupler and the lower coupler and the like occur in daily use.

SUMMERY OF THE UTILITY MODEL

The utility model relates to an overcome prior art's lower coupler's coupling groove when too narrow, because water has surface tension and leads to water glutinous even at the coupling groove, or the remaining water in the coupling groove can't in time be discharged, or when the coupling groove was too wide, there was contact failure problem in the upper and lower coupler, provides a coupler.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a coupler comprising an upper coupler and a lower coupler, the lower coupler comprising:

the wall thickness of a single lower coupling ring is changed along the circumferential direction to form thick wall sections and thin wall sections, and the thick wall sections are distributed on the lower coupler in a staggered mode;

the lower coupling grooves are formed between two adjacent lower coupling rings, and the width of each lower coupling groove changes along the circumferential direction to form a wide area and a narrow area;

the drain hole is arranged at the bottom of the lower coupling groove and is positioned in the wide area;

the output conductors are arranged on the thick wall sections to increase the creepage distance of the output conductors, and the output conductors in the lower coupling grooves are all positioned in the narrow region;

when the upper coupler is matched with the lower coupler, the thick wall section limits the upper coupler so that the output conductor is tightly attached to the upper coupler.

The bottom of the lower coupling groove is also provided with a drain hole, and when residual water is accumulated in the lower coupling groove, the residual water can be drained from the drain hole in time; the wall thicknesses of the coupling rings are different, so that the widths of the coupling grooves formed by two adjacent coupling rings in the circumferential direction are different, the wide area can avoid the situation that water is adhered to the groove wall due to surface tension and cannot be discharged, the water discharge holes are formed in the wide area, the water can be smoothly discharged, the narrow area can limit the movement of the upper coupler, the output electric conductor is arranged in the narrow area, the output electric conductor can be in closer contact with the upper coupler, and the situation that the upper coupler and the lower coupler are in poor contact is prevented; when a user touches the coupler, the output conductor has the condition of breaking through air and creepage to a hand along the lower coupling ring, and is arranged on the thick-wall section, so that the creepage distance from the current to the hand along the climbing of the ring wall of the lower coupling ring is increased, and the use safety of the lower coupler is improved; the thick wall section distributes on coupler down by mistake for when upper and lower coupler cooperation, lower coupler can be diversified, the spacing coupler of going up of multi-angle, when further avoiding the cooperation of coupler from top to bottom, go up rocking of coupler.

Preferably, the lower coupling ring part protrudes outwards towards one side to form the thick wall section, the rest part forms the thin wall section, mounting grooves are formed in the inner side wall and the outer side wall of the thick wall section, and the output conductor is located in the mounting grooves. Be equipped with the mounting groove on the thick wall section, the output conductor is located the mounting groove, can enough play the effect that blocks the protection for the output conductor, avoids water droplet or other impurity to fall short circuit or contact failure that arouse on the output conductor, can provide the space for the elastic deformation of output conductor again.

Preferably, the lower coupler includes, in order from inside to outside, a first lower coupling ring, a second lower coupling ring, a third lower coupling ring, and a fourth lower coupling ring, ring walls of the third lower coupling ring and the fourth lower coupling ring both protrude inward to form the thick wall section, a ring wall of the first lower coupling ring protrudes outward to form the thick wall section, the narrow region is formed between the thick wall section of the fourth lower coupling ring and an outer sidewall of the third lower coupling ring, the narrow region is formed between the thick wall section of the third lower coupling ring and an outer sidewall of the second lower coupling ring, and the narrow region is formed between the thick wall section of the first lower coupling ring and an inner sidewall of the second lower coupling ring.

Preferably, the output conductor is a movable contact, a protruding point is arranged at the end part of the movable contact, the protruding point protrudes out of the mounting groove, and the movable contacts in the lower coupling groove are all located in the narrow area.

Preferably, the upper coupler comprises an upper water inlet pipe, an upper coupling groove and an input conductor arranged on the side wall of the upper coupling groove, the lower coupler further comprises a lower water inlet pipe communicated with the water pump, when the upper coupler is matched with the lower coupler, the input conductor is abutted to the thick-wall section, the upper water inlet pipe and the lower water inlet pipe are inserted, the input conductor is in contact conduction with the output conductor, and in the process of separating the upper coupler from the lower coupler, the lower water inlet pipe pushes the output conductor to be separated from the input conductor, and then the lower water inlet pipe is separated from the upper water inlet pipe. Input electric conductor and output electric conductor advance one step outage separation before inlet tube and last inlet tube throw off down, make the water pump stop earlier the inlet tube down send water after, last inlet tube is thrown off with lower inlet tube again, prevent that the water pump can not in time stop work or intraductal residual pressure from making water continue to flow from the inlet tube down, spray at last, on the lower coupler, after the outage, lower inlet tube reseparation makes the hydroenergy of water pump rear end can keep away through last inlet tube under the effect of intraductal residual pressure, prevent on, the unrestrained condition of residual water appears when lower inlet tube separation.

Preferably, the lower water inlet pipe is connected to the center of the lower coupler in a sliding mode through an elastic part, the lower water inlet pipe comprises a pipe body and a limiting protrusion arranged on the pipe body, a pushing protrusion is arranged on the output conductor, when the upper coupler is matched with the lower coupler, the lower water inlet pipe compresses the elastic part, the limiting protrusion is located below the pushing protrusion, the input conductor is in contact conduction with the output conductor, in the process of separating the upper coupler from the lower coupler, the lower water inlet pipe moves upwards under the action of the elastic part, the limiting protrusion jacks up the pushing protrusion, and the input conductor is separated from the output conductor.

Preferably, the limiting protrusion is an annular rib surrounding an outer peripheral side of the tube body, the elastic member is sleeved on the outer peripheral side of the tube body, an upper end of the elastic member abuts against the annular rib, and a lower end of the elastic member abuts against a bottom of the lower coupler.

Preferably, the bottom of the lower coupler is provided with a mounting hole for a pipe body to pass through, the pipe body is detachably connected with a clamping ring positioned at the lower part of the mounting hole, and the clamping ring is abutted against the outer peripheral side of the bottom of the mounting hole to prevent the lower water inlet pipe from being separated from the lower coupler upwards.

Preferably, the thick wall section and the thin wall section are in smooth transition, and at least one drainage hole is positioned at the junction of the thick wall section and the thin wall section. The thick wall section and the thin wall section are in smooth transition, a corner with clear edges does not exist at the junction of the thick wall section and the thin wall section, and waterproof water drops are adhered to the junction.

Preferably, the drainage hole is fan-shaped, that is, the width of the drainage hole gradually increases from the inside to the outside. On the premise of not influencing the structure and the strength of the lower coupler, the area of the drain hole is increased.

Therefore, the utility model discloses following beneficial effect has: the lower coupler of the utility model is provided with the drain hole, so that water can be drained from the lower coupler, and the water is prevented from accumulating in the lower coupler; the lower coupling groove comprises a wide area and a narrow area, the wide area is convenient for drainage and is adhered with waterproof water in the coupling groove, and when the upper coupler and the lower coupler are matched, the narrow area limits the position of the upper coupler to ensure that the input electric conductor can be in close contact with the output electric conductor; the output conductor is arranged in the mounting groove of the thick-wall section, so that the creepage distance of the output conductor is increased, and the safety is improved; when the upper coupler and the lower coupler are separated, the power is cut off first and then the upper water inlet pipe and the lower water inlet pipe are separated, so that water is prevented from overflowing from the lower water inlet pipe.

Drawings

FIG. 1 is a perspective view of an unassembled state of an upper coupler and a lower coupler according to a first embodiment;

FIG. 2 is a schematic sectional view of a lower coupler according to the first embodiment;

FIG. 3 is a cross-sectional view of the upper and lower couplers in an assembled state according to one embodiment;

FIG. 4 is an enlarged view of the portion A of FIG. 3 according to the first embodiment;

FIG. 5 is a cross-sectional view showing the separation of the upper coupler and the lower coupler in the first embodiment;

FIG. 6 is an enlarged view of the portion B of FIG. 5 according to the first embodiment;

FIG. 7 is a cross-sectional view of the upper and lower couplers in a disengaged state according to one embodiment;

FIG. 8 is an enlarged view of the portion C of FIG. 7 according to the first embodiment;

FIG. 9 is a schematic view showing the assembly of the lower inlet pipe and the elastic member according to the first embodiment;

FIG. 10 is a perspective view of a snap ring according to one embodiment;

FIG. 11 is a view showing the combination state of the lower coupler and the lower water inlet pipe of the present invention;

fig. 12 is a perspective view of the lower coupler of the present invention.

In the figure: 100. an upper coupler; 110. conducting rings; 200. an upper water inlet pipe; 300. a lower coupler; 310. a lower coupling ring; 311. mounting grooves; 312. a thick wall section; 313. a thin-walled section; 314. a wide region; 315. a narrow region; 316. a drain hole; 320. a conductive spring plate; 321. a free end; 322. pushing the protrusion; 323. a fixed end; 330. mounting holes; 400. a lower water inlet pipe; 410. a pipe body; 411. a card slot; 420. an annular convex rib; 430. a snap ring; 431. an opening; 500. an elastic member.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description.

In embodiment 1 shown in fig. 1 to 12, a coupler includes an upper coupler 100 and a lower coupler 300, the upper coupler 100 is disposed at the bottom of a kettle body, the lower coupler 300 is disposed on a machine body, and the lower coupler includes:

a plurality of lower coupling rings 310, wherein the wall thickness of each lower coupling ring varies along the circumferential direction to form thick wall sections 312 and thin wall sections 313, and the thick wall sections 312 are distributed on the lower coupler 300 in a staggered manner;

the lower coupling grooves are formed between two adjacent lower coupling rings 310, and the width of each lower coupling groove changes along the circumferential direction to form a wide region 314 and a narrow region 315;

a drain hole 316, wherein the drain hole 316 is arranged at the bottom of the lower coupling groove, and the drain hole 316 is positioned in the wide area 314; output conductors disposed in the thick wall sections 312 to increase a creepage distance of the output conductors, and the output conductors in the lower coupling grooves are all located in the narrow region 315;

when the upper coupler 100 is mated with the lower coupler 300, the thick wall section 312 positions the upper coupler 100 so that the output conductor is held against the upper coupler 100.

The upper coupler 100 includes upper coupling rings and input conductors, an upper coupling slot is formed between two adjacent upper coupling rings, the input conductors are static contacts annularly disposed on the walls of the upper coupling rings or the walls of the lower coupling slots, in this embodiment, the conductive rings 110, the output conductors are metal moving contacts, in this embodiment, the conductive spring 320, and when the upper and lower couplers are mated, the input conductors and the output conductors are electrically connected.

As shown in fig. 11 and 12, the bottom of the lower coupling groove is further provided with a drain hole 316, and when the residual water is accumulated in the lower coupling groove, the residual water can be drained from the drain hole in time; the wall thickness of the lower coupling rings 310 is different, so that the widths of the lower coupling grooves formed by two adjacent lower coupling rings 310 in the circumferential direction are different, the wide region 314 can prevent water from being adhered to the groove wall due to surface tension and cannot be discharged, the water discharge holes 316 are arranged in the wide region 314, so that the water can be discharged more smoothly, the narrow region 315 can limit the movement of the upper coupler, and the output conductor is arranged in the narrow region 315, so that the output conductor can be in closer contact with the upper coupler 100, and the poor contact between the upper coupler and the lower coupler can be prevented; when a user touches the coupler, the output conductor has the condition of breaking through air and creeping to a hand along the lower coupling ring, and is arranged on the thick-wall section 312, so that the creepage distance from the current to the hand along the climbing slope of the annular wall of the lower coupling ring 310 is increased, and the use safety of the lower coupler 300 is improved; the thick wall sections 312 are distributed on the lower coupler 300 in a staggered manner, so that when the upper coupler 300 is matched with the lower coupler, the lower coupler 300 can limit the upper coupler 100 in multiple directions and multiple angles, and the shaking of the upper coupler 100 when the upper coupler 300 is matched with the lower coupler 300 is further avoided.

The lower coupling ring 310 protrudes outward from one side to form the thick wall section 312, the remaining portion forms the thin wall section 313, the inner and outer sidewalls of the thick wall section 312 are both provided with mounting slots 311, and the output conductor is located in the mounting slots 311. The lower coupler 300 includes a first lower coupling ring, a second lower coupling ring, a third lower coupling ring and a fourth lower coupling ring in sequence from inside to outside, the ring walls of the third lower coupling ring and the fourth lower coupling ring are both inwardly protruded to form the thick wall section 312, the ring wall of the first lower coupling ring is outwardly protruded to form the thick wall section 312, the thick wall section 312 of the fourth lower coupling ring and the outer sidewall of the third lower coupling ring form the narrow region 315, the thick wall section 312 of the third lower coupling ring and the outer sidewall of the second lower coupling ring form the narrow region 315, and the thick wall section 312 of the first lower coupling ring and the inner sidewall of the second lower coupling ring form the narrow region 315.

Coupling ring is provided with two thick wall sections 312 down on the fourth and is long section and short section respectively, and long section and short section set up relatively, mounting groove opening on the long section is outside, mounting groove opening on the short section is inwards, coupling ring is provided with a thick wall section 312 down on the third, and this thick wall section 312 is last the adjacent mounting groove 311 that is provided with an opening outwards and an opening mounting groove 311 inwards, and coupling ring is provided with a thick wall section 312 down, and this thick wall section 312 is last the adjacent mounting groove 311 that is provided with an opening outwards and an opening mounting groove 311 inwards. The thick wall sections 312 on the first lower coupling ring, the third lower coupling ring and the fourth lower coupling ring are not completely overlapped, the top surface of the lower coupler 300 is used as a reference surface, the center of the lower coupler 300 is used as an origin, and the thick wall sections 312 are arranged in the first quadrant, the second quadrant, the third quadrant and the fourth quadrant.

The output conductor is a movable contact piece, the end of the movable contact piece is provided with a salient point, the salient point protrudes out of the mounting groove 311, and the movable contact pieces in the lower coupling groove are all located in the narrow zone 315. The movable contact piece is located the mounting groove 311, and the movable contact piece can produce elastic deformation in order to have the deformation state that is close to the mounting groove 311 diapire when upper and lower coupler cooperates and keep away from the reset state of mounting groove 311 diapire when upper and lower coupler separates.

The upper coupler 100 comprises an upper water inlet pipe 200, an upper coupling groove and an input conductor arranged on the side wall of the upper coupling groove, the lower coupler 300 further comprises a lower water inlet pipe 400 communicated with a water pump, when the upper coupler 100 is matched with the lower coupler 300, the input conductor is abutted to the thick wall section 312, the upper water inlet pipe and the lower water inlet pipe are inserted, the input conductor is in contact conduction with the output conductor, and in the process of separating the upper coupler 100 from the lower coupler 300, the lower water inlet pipe 400 pushes the output conductor to be separated from the input conductor, and then the lower water inlet pipe 400 is separated from the upper water inlet pipe 200.

The lower water inlet pipe 400 is connected to the center of the lower coupler 300 in a sliding mode through an elastic part 500, the lower water inlet pipe 400 comprises a pipe body 410 and a limiting protrusion arranged on the pipe body, a pushing protrusion 322 is arranged on the output conductor, when the upper coupler 100 is matched with the lower coupler 300, the lower water inlet pipe 400 compresses the elastic part 500, the limiting protrusion is located below the pushing protrusion 322, the input conductor is in contact conduction with the output conductor, in the separation process of the upper coupler 100 and the lower coupler 300, the lower water inlet pipe 400 moves upwards under the action of the elastic part 500, the limiting protrusion jacks the pushing protrusion 322, and the input conductor is separated from the output conductor. The output conductor closest to the lower water inlet pipe 400 is provided with the push protrusion 322.

The limiting protrusion is an annular rib 420 surrounding the outer periphery of the tube body 410, the elastic member 500 is sleeved on the outer periphery of the tube body 410, the upper end of the elastic member 500 abuts against the annular rib 420, and the lower end of the elastic member 500 abuts against the bottom of the lower coupler 300.

The bottom of the lower coupler 300 is provided with a mounting hole 330 for a pipe body 410 to pass through, a snap ring 430 positioned at the lower part of the mounting hole 330 is detachably connected to the pipe body 410, and the snap ring 430 is abutted against the outer peripheral side of the bottom of the mounting hole 330 to prevent the lower water inlet pipe 400 from being separated from the lower coupler 300 upwards.

The thick wall section 312 and the thin wall section 313 are in smooth transition, and at least one drainage hole 316 is located at the interface of the thick wall section 312 and the thin wall section 313. The thick wall section 312 and the thin wall section 313 are in smooth transition, so that an acute corner or a corner with an obvious edge angle is prevented from appearing at the junction of the thick wall section 312 and the thin wall section 313, water drops can be prevented from being adhered to the corner, the drain hole 316 is sector-shaped, and the width of the drain hole 316 is gradually increased from inside to outside.

The coupler of the application can be applied to a water dispenser, the bottom of a kettle body is provided with an upper coupler 100, the upper coupler 100 is provided with a static contact piece, an upper water inlet pipe 200 in the upper coupler 100 is communicated with the inside of the kettle body, the top of a machine body for placing the kettle body is provided with a lower coupler 300, the lower coupler is provided with a movable contact piece, a lower water inlet pipe 400 communicated with a water pump penetrates through the lower coupler, the lower water inlet pipe 400 is connected to the lower coupler 300 in a sliding mode through an elastic piece 500, and the elastic piece 500 is preferably a spring.

When the kettle body is completely installed on the machine body, namely the upper coupler 100 and the lower coupler 300 are in an assembly state, the upper coupler 100 downwardly extrudes the lower water inlet pipe 400, the elastic piece 500 is in a compression state under the extrusion of the lower water inlet pipe 400, meanwhile, the upper water inlet pipe 200 is connected with the lower water inlet pipe 400 in an inserting mode so that the upper water inlet pipe 200 is communicated with the lower water inlet pipe 400, at the moment, the movable contact piece is electrically connected with the static contact piece to electrify the water pump, and the electrified water pump works so that water in the water tank sequentially passes through the water pump, the lower water inlet pipe 400 and the upper water inlet pipe 200 to enter the kettle body to realize water feeding.

In the process of lifting the kettle body upwards, the upper coupler 100 is upwards far away from the lower coupler 300, the lower water inlet pipe 400 firstly slides upwards under the elastic force of the elastic piece 500, the lower water inlet pipe 400 pushes the movable contact piece to be far away from the static contact piece while keeping the splicing state with the upper water inlet pipe 200, so that the power of the water pump is cut off and the water feeding to the lower water inlet pipe 400 is stopped, at the moment, the residual water flow in the lower water inlet pipe 400 is guided into the kettle body through the upper water inlet pipe 200 under the action of instant pressure to evacuate the lower water inlet pipe 400, and then when the lower water inlet pipe 400 stops moving upwards, the upper coupler 100 drives the upper water inlet pipe 200 to continuously move upwards, so that the upper water inlet pipe 200 is separated from the lower water inlet pipe 400.

The utility model discloses at last coupler 100 upwards keep away from the in-process of lower coupler 300, lower inlet tube 400 shifts up under the promotion of elastic component 500 and pushes away the movable contact from the static contact earlier to make the water pump outage and stop the inlet tube 400 water feeding downwards, then go up coupler 100 and drive upper inlet tube 200 and continue to shift up, when lower inlet tube 400 stopped shifting up, upper inlet tube 200 disengaged with lower inlet tube 400. That is, in the process of separating the upper coupler 100 from the lower coupler 300, the lower water inlet pipe 400 pushes away the movable contact electrically connected with the static contact first, so as to stop the water supply when the water pump is powered off, and then is separated from the upper water inlet pipe 200, when the water pump is powered off, the residual water flow in the lower water inlet pipe 400 can be guided into the kettle body through the upper water inlet pipe 200, so as to evacuate the lower water inlet pipe 400, the lower water inlet pipe 400 after being disconnected is prevented from overflowing outwards to cause strong electric conduction to cause circuit short circuit, the drying of the base is ensured, and the use experience of a user is improved.

In this embodiment, the static contact is a conductive ring 110 disposed on the upper coupler, the moving contact is a conductive elastic sheet 320 disposed on the lower coupler, the conductive elastic sheet 320 includes a free end 321 and a fixed end 323 fixed on the lower coupler, when the upper coupler is plugged on the lower coupler, the free end 321 of the conductive elastic sheet 320 abuts against an outer sidewall of the conductive ring 110, so that the conductive elastic sheet 320 is electrically connected to the conductive ring 110. Through setting the movable contact spring to conductive elastic piece 320, the elasticity that conductive elastic piece 320 itself had makes movable contact spring and static contact's connection inseparabler, guarantees the stability of water pump water feeding, and simultaneously, the easy deformation's of conductive elastic piece 320 characteristics, the inlet tube promotes the tip and the conducting ring 110 quickly separating of conductive elastic piece 320 down also is convenient for, and the operation is more sensitive. The salient point is arranged at the free end.

In this embodiment, the middle of the conductive elastic sheet 320 located at the innermost side of the lower coupler 300 is provided with a pushing protrusion 322, the pushing protrusion 322 is protruded towards the lower water inlet pipe 400, in the process of moving up the lower water inlet pipe 400, the lower water inlet pipe 400 pushes the end of the conductive elastic sheet 320 away from the conductive ring 110 by pushing the pushing protrusion 322, the pushing protrusion 322 is arranged in the middle of the conductive elastic sheet 320, so that the lower water inlet pipe 400 can push the pushing protrusion 322 outwards when passing through the middle of the conductive elastic sheet 320, so that the end of the conductive elastic sheet 320 is far away from the conductive ring 110, because the end displacement of the conductive elastic sheet 320 is far greater than the displacement distance of the pushing protrusion 322, the movement of the smaller distance of the pushing protrusion 322 can drive the end of the conductive elastic sheet 320 to be far away from the conductive ring 110, and the pushing effect of the lower water inlet pipe 400 is better. Preferably, promote protruding 322 and the integrative setting of electrically conductive shell fragment 320, the middle part of electrically conductive shell fragment 320 is bent the arch downwards to inlet tube 400 and is promoted protruding 322 in order to form, be convenient for production and processing, and the reduction in production cost promotes the preferred semicircular in shape of the protruding 322 longitudinal section, lower inlet tube 400 is crossing promoting protruding 322 from bottom to top, can slide and form the promotion to promoting protruding 322 along semicircular promotion protruding 322, make lower inlet tube 400 more smooth and easy to the promotion that promotes protruding 322, and the user is more laborsaving, improve user's use experience.

As shown in fig. 9, in this embodiment, the lower inlet pipe 400 includes a pipe body 410 and a limiting protrusion disposed on an outer side wall of the pipe body 410, the limiting protrusion is located below the pushing protrusion 322 when the movable contact is electrically connected to the stationary contact, and when the lower inlet pipe 400 moves upward, the lower inlet pipe 400 pushes the conductive elastic piece 320 to be separated from the conductive ring 110 through the limiting protrusion. Through setting up spacing arch for the protruding 322 that promotes on the electrically conductive shell fragment 320 of lower inlet tube accessible is protruding, the electrically conductive shell fragment 320 of being convenient for and conducting ring 110 quickly separating, and it is better to promote the effect.

The limiting protrusion in this embodiment may be formed by bending the outer side wall of the tube body 410, or may be a protrusion fixed on the outer side wall of the tube body 410, preferably, the limiting protrusion in this embodiment is an annular protruding rib 420 surrounding the outer side wall of the tube body 410, the lower coupler 300 is provided with a mounting hole 330 for the tube body 410 to pass through, the elastic member 500 is sleeved on the outer side wall of the tube body 410, the upper end of the elastic member 500 abuts against the annular protruding rib 420, and the lower end of the elastic member 500 abuts against the outer side wall of the top of the mounting hole 330. Through setting up spacing arch into annular protruding muscle 420, it promotes protruding 322 to need not to aim at spacing arch when inlet tube 400 is installed down, even rotatory inlet tube 400 down, annular protruding muscle 420 is when promoting protruding 322, can promote all the time and promote protruding 322, reduce the assembly precision, improve assembly efficiency, establish on body 410 through establishing elastic component 500 cover, can carry out spacing on the horizontal direction to elastic component 500, annular protruding muscle 420 is when being used for promoting and promote protruding 322, still can carry out ascending spacing in the vertical direction to elastic component 500, guarantee that elastic component 500 is located the lower extreme of inlet tube 400 down all the time in order to form the promotion to inlet tube 400 down, guarantee the in-process that moves up at last coupler 100 promptly, before the water pump outage, go up inlet tube 200 and inlet tube 400 can not throw off down, prevent inlet tube 400 overflow down.

The pipe body 410 is detachably connected with the snap ring 430, the snap ring 430 is positioned at the lower part of the mounting hole 330, when the lower water inlet pipe 400 moves upwards under the elastic force of the elastic member 500, the snap ring 430 moves upwards together with the pipe body 410 until the top surface of the snap ring 430 is abutted against the outer peripheral side of the bottom of the mounting hole 330 to prevent the lower water inlet pipe 400 from moving upwards continuously, and through the arrangement of the limiting protrusions and the snap ring 430, the lower water inlet pipe 400 can only move upwards and downwards within a limited height, so that the lower water inlet pipe 400 is prevented from being separated from the mounting hole 330.

Be equipped with draw-in groove 411 at the periphery side of body 410, as shown in fig. 10, be equipped with opening 431 on the snap ring 430, snap ring 430 is gone into from the lateral part card of draw-in groove 411 through opening 431 for the inner circle joint of snap ring 430 is in draw-in groove 411, and the bottom surface of the top surface of snap ring 430 offsets with the inner wall of draw-in groove 411 respectively, takes place to remove in order to prevent that snap ring 430 from along the axial of body 410, ensures that inlet tube 400 stops at suitable height under the spacing of snap ring 430 down, guarantees user's use experience. Of course, the plurality of clamping grooves 411 may be provided, so that a worker can selectively install the clamping ring 430 in any one of the clamping grooves 411 according to the lower couplers 300 with different sizes and models, so that the lower water inlet pipe 400 can be adapted to different types of lower couplers 300, and the application range is wider.

As shown in fig. 3 and 4, when the upper coupler 100 and the lower coupler 300 are in an assembled state, the free end 321 of the upper portion of the conductive elastic sheet 320 abuts against the outer sidewall of the conductive ring 110, and the upper coupler 100 presses the lower water inlet pipe 400 downward, so that the annular rib 420 on the peripheral side of the pipe body 410 is located on the lower portion of the pushing protrusion 322. As shown in fig. 5 and 6, when the upper coupler 100 moves upward, the lower water inlet pipe 400 moves upward under the pushing of the elastic member 500, the pipe 410 drives the annular rib 420 to move upward at the same time, and the annular rib 420 moves over the pushing protrusion 322 at the middle of the conductive elastic piece 320 and pushes the pushing protrusion 322 outward to drive the conductive elastic piece 320 to deform, so that the free end 321 of the conductive elastic piece 320 is separated from the conductive ring 110. As shown in fig. 7 and 8, after the lower inlet pipe passes over the push protrusion 322, the snap ring 430 abuts against the outer circumferential side of the bottom of the mounting hole 330 to prevent the lower inlet pipe 400 from further moving upward, at which time the upper inlet pipe 200 of the upper coupler 100 further moves upward and is disengaged from the lower inlet pipe 400.

The creepage distance that mentions in this application climbs at the lateral wall of mounting groove along the diapire of mounting groove after for the diapire of output conductor radial puncture air to mounting groove, again along the lateral wall of mounting groove through the rampart of lower coupling ring or the cell wall of lower coupling groove climb to the distance at lower coupler top, owing to increased the wall thickness of lower coupling ring, consequently creepage distance increases, and the security improves.

Claims (10)

1. A coupler comprising an upper coupler and a lower coupler, wherein the lower coupler comprises:

the wall thickness of a single lower coupling ring changes along the circumferential direction to form a thick wall section and a thin wall section;

the lower coupling grooves are formed between two adjacent lower coupling rings, and a wide area and a narrow area are arranged in each lower coupling groove;

the drain hole is arranged at the bottom of the lower coupling groove and is positioned in the wide area;

the output electric conductors are arranged on the thick wall sections so as to increase the creepage distance of the output electric conductors, and the output electric conductors positioned in the lower coupling grooves are all positioned in the narrow region.

2. The coupler of claim 1, wherein the lower coupling ring portion protrudes outward toward one side to form the thick-wall section, the remaining portion forms the thin-wall section, and mounting grooves are formed in the inner side wall and the outer side wall of the thick-wall section, and the output conductor is located in the mounting grooves.

3. The coupler of claim 2, wherein the lower coupler comprises, in order from inside to outside, a first lower coupling ring, a second lower coupling ring, a third lower coupling ring and a fourth lower coupling ring, ring walls of the third lower coupling ring and the fourth lower coupling ring are both inwardly protruded to form the thick wall section, a ring wall of the first lower coupling ring is outwardly protruded to form the thick wall section, the narrow region is formed between a thick wall section of the fourth lower coupling ring and an outer side wall of the third lower coupling ring, the narrow region is formed between a thick wall section of the third lower coupling ring and an outer side wall of the second lower coupling ring, and the narrow region is formed between a thick wall section of the first lower coupling ring and an inner side wall of the second lower coupling ring.

4. The coupler of claim 3, wherein the output conductor is a moving contact, the end of the moving contact is provided with a protruding point, the protruding point protrudes out of the mounting groove, and the moving contacts in the lower coupling groove are all located in the narrow region.

5. The coupler of claim 1, wherein the upper coupler comprises an upper water inlet pipe, an upper coupling groove and an input conductor arranged on a side wall of the upper coupling groove, the lower coupler further comprises a lower water inlet pipe communicated with a water pump, when the upper coupler is matched with the lower coupler, the input conductor is abutted against the thick-walled section, the upper water inlet pipe and the lower water inlet pipe are plugged, the input conductor is in contact conduction with the output conductor, and in the process of separating the upper coupler from the lower coupler, the lower water inlet pipe pushes the output conductor to be separated from the input conductor, and then the lower water inlet pipe is separated from the upper water inlet pipe.

6. The coupler of claim 5, wherein the lower water inlet pipe is slidably connected to the center of the lower coupler through an elastic member, the lower water inlet pipe includes a pipe body and a limiting protrusion disposed on the pipe body, the output conductor is provided with a pushing protrusion, when the upper coupler is engaged with the lower coupler, the lower water inlet pipe compresses the elastic member, the limiting protrusion is disposed below the pushing protrusion, the input conductor is in contact with the output conductor, the lower water inlet pipe moves upward under the action of the elastic member during the process of separating the upper coupler from the lower coupler, the limiting protrusion jacks up the pushing protrusion, and the input conductor is separated from the output conductor.

7. The coupler of claim 6, wherein the limiting protrusion is an annular rib surrounding an outer peripheral side of the tube, the elastic member is sleeved on the outer peripheral side of the tube, an upper end of the elastic member abuts against the annular rib, and a lower end of the elastic member abuts against a bottom of the lower coupler.

8. The coupler of claim 7, wherein the bottom of the lower coupler is provided with a mounting hole for a pipe to pass through, the pipe is detachably connected with a snap ring positioned at the lower part of the mounting hole, and the snap ring is abutted against the outer peripheral side of the bottom of the mounting hole to prevent the lower water inlet pipe from being pulled out of the lower coupler upwards.

9. A coupler according to any of claims 1 to 8, wherein the thick wall section and the thin wall section are in smooth transition, and wherein at least one drainage aperture is located at the interface of the thick wall section and the thin wall section.

10. A coupler according to claim 9, wherein the drainage aperture is fan-shaped, i.e. the width of the drainage aperture increases from the inside to the outside.

Images