CN211270038U - Electric kettle - Google Patents

Abstract

The utility model discloses an electric kettle solves the problem that contact and conductive part contact reliability and security are low, and the technical scheme of solving this problem mainly includes the kettle body that is equipped with the connector and the power base that is equipped with down the connector, the kettle body through the cooperation of upper and lower connector for 360 degrees rotations of power base, the upper connector is equipped with the conductive part, is equipped with the terminal in the connector down, the terminal including have the contact connecting portion and connect in the fixed part of connector down, the conductive part stretches into down in the connector with the contact electrical contact, the connector is equipped with the spacing portion of limiting contact along the electric contact surface sliding migration of conductive part down, spacing portion is contradicted spacingly with connecting portion. The utility model discloses well contact reliable and stable and electrically contacts with the conductive part, prevents to appear under the contact hot melt connector inner wall.

Description

Electric kettle

Technical Field

The utility model relates to a small household electrical appliance technical field, especially an electric kettle.

Background

An electric kettle generally comprises an upper connector and a lower connector, wherein the upper connector is provided with a conductive part, a terminal is arranged in the lower connector, the lower end of the conductive part extends into the lower connector to be electrically contacted with a contact on the terminal, however, when the lower end of the conductive part is contacted with the contact, the contact can horizontally slide relative to the conductive part, when the contact on the terminal slides and deviates too much and is not attached to the conductive part, the whole liquid heater can affect the normal work due to poor contact inside the electric kettle, when the contact on the terminal slides and deviates and is not completely contacted with the conductive part, the distance between the deviated contact and the inner wall of the lower connector is too small, the contact continuously heats up after being electrified, the high-temperature contact can melt the adjacent inner wall of the lower connector, thereby not only being easy to generate peculiar smell to influence the use experience of users, and has great potential safety hazard, and also reduces the service life of the whole liquid heater and the reliability of the whole machine.

SUMMERY OF THE UTILITY MODEL

The utility model aims to achieve the purpose of providing an electric kettle, the contact is reliable and stable with the conductive part electrical contact, prevent that the hot melt of contact from appearing the connector inner wall down.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an electric kettle, including the kettle body that is equipped with the connector and the power base that is equipped with down the connector, the kettle body through the cooperation of upper and lower connector for power base 360 degrees rotations, the upper connector is equipped with the conductive part, is equipped with the terminal in the connector down, the terminal including have the connecting portion of contact and connect in the fixed part of connector down, the conductive part stretches into down in the connector with the contact electrical contact, the connector is equipped with the spacing portion of restriction contact along the electric contact surface sliding migration of conductive part down, spacing portion is contradicted spacingly with the connecting portion.

Furthermore, be equipped with between connector and the contact down and prevent the anti-melting interval of connector hot melt down, the anti-melting interval is the minimum horizontal interval of inner wall and contact when connecting portion conflict in spacing portion of connector down.

Further, the anti-melting distance L is more than or equal to 2 mm.

Furthermore, the terminals are provided in plurality, the lower connector comprises a lower connector shell and an insulating wall for isolating different terminals, and the limiting part is arranged on the side surface of the insulating wall facing the terminals and/or the inner wall of the lower connector shell; or the limiting part is a limiting column, a limiting block, a limiting bulge, a limiting surface or a limiting rib.

Furthermore, the connecting portion is also provided with a supporting leg for limiting the contact to move towards the upper connector, and the lower connector is provided with a supporting surface which is in interference fit with the free end of the supporting leg.

Furthermore, spacing portion is including locating the spacing platform of connector down, and the top surface of spacing platform is located to the holding surface, and the free end of supporting leg still is equipped with the backstop piece, and the backstop piece is contradicted in the week side of spacing platform.

Further, connecting portion are bar structure, and fixed part and contact are located the both ends of connecting portion respectively, and spacing portion is less than or equal to 8mm with the biggest horizontal interval S of contact on the length direction of connecting portion.

Further, the bottom of connector still is equipped with the fixed slot down, and the fixed part joint is in the fixed slot, and the long limit of connecting portion is equipped with the spacing foot of restriction connecting portion horizontal pivoted, and spacing foot is contradicted on the groove lateral wall of fixed slot.

Furthermore, the connecting portion include the folded piece that is used for increasing connecting portion elasticity deformation volume in the conductive part grafting direction and the collar that is used for installing the contact, collar and fixed part are connected respectively to the both ends of folded piece, and connecting portion are contradicted in spacing portion through the long limit of folded piece or collar, and the collar transversely sets up and encircles in the contact outside, and the collar is higher than the folded piece, and the conductive part drives contact and collar and moves along the grafting direction of conductive part.

Furthermore, the conductive part is provided with a plurality of first conductive rings and second conductive rings which are coaxially arranged, the second conductive rings are sleeved outside the first conductive rings, the inner sides of the first conductive rings are provided with grounding shafts, and the grounding shafts protrude out of the first conductive rings and/or the second conductive rings in the plugging direction;

or, the conductive part is equipped with a plurality ofly and including coaxial first conducting ring and the second guide ring that sets up, and the outside of first conducting ring is located to the second conducting ring cover, and first conducting ring inboard is equipped with the ground connection axle, and the terminal is equipped with a plurality ofly and includes the first terminal with first conducting ring electrical contact, the second terminal with second conducting ring electrical contact and the third terminal with ground connection axle electrical contact, and the contact of third terminal is protruding out in the contact of first terminal and the contact of second terminal on the grafting direction of connector down.

After the technical scheme is adopted, the utility model has the advantages of as follows:

1. when the upper connector and the lower connector are plugged, the limiting part abuts against the connecting part and limits the connecting part to drive the contact to slide along the electric contact surface of the conductive part by a large margin, so that the contact is prevented from being separated due to large deviation relative to the conductive part, the contact and the conductive part are favorably and stably attached, and the upper connector and the lower connector are ensured to be plugged in place. Meanwhile, the limiting part limits the large-amplitude deviation of the contact to avoid the contact from contacting with the inner wall of the lower connector, the contact which is heated when the power is on is prevented from melting the inner wall of the lower connector, the service life of the lower connector is guaranteed, and potential safety hazards are eliminated.

2. The arrangement of the anti-melting interval ensures that the air with enough thickness is insulated between the contact and the inner wall of the lower connector, so that the inner wall of the lower connector can be effectively prevented from being melted due to abnormal overheating of the contact, and the safety and the reliability are higher.

3. The anti-melting distance L is more than or equal to 2mm, so that the air between the contact and the inner wall of the lower connector is thick enough to prevent the heat of the contact from being transmitted to the lower connector in a large amount, and the lower connector made of plastic is prevented from being hot-melted due to overhigh temperature.

4. The setting of insulating wall can prevent that adjacent terminal from being too close to taking place short circuit or corona discharge phenomenon, and spacing portion can be according to terminal structure and the nimble setting in on the inner wall of insulating wall or lower connector housing of shape.

5. The connecting portion are of strip-shaped structures, the fixing portion and the contacts are located at two ends of the connecting portion respectively, when the upper connector and the lower connector are inserted in place, one end, far away from the fixing portion, of the connecting portion deforms sufficiently to enable the contacts to be attached to the conducting portion, poor contact between the conducting portion and the contacts is avoided when the electric kettle vibrates, and reliability of the electric kettle and service life of the whole electric kettle are guaranteed.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

FIG. 1 is a structural view of a lower connector of an electric kettle according to a first embodiment of the present invention;

FIG. 2 is a bottom view of the lower connector of the electric kettle according to the first embodiment;

FIG. 3 is a bottom view of the lower connector of the electric kettle in the second embodiment;

fig. 4 is a schematic structural view of the electric kettle.

Detailed Description

The utility model discloses in, transversely indicate to be approximately parallel with the radial plane of lower connector, specifically, there is contained angle theta in the radial plane of horizontal relative lower connector, and wherein theta is less than or equal to 30.

The first embodiment is as follows:

as shown in fig. 1, 2 and 4, the present embodiment provides an electric kettle, which includes a kettle body 50 provided with an upper connector and a power base 60 provided with a lower connector 1, where the kettle body 50 can rotate 360 degrees relative to the power base 60 through the cooperation of the upper and lower connectors, the upper connector is provided with a conductive portion, a terminal 2 is arranged in the lower connector 1, the terminal 2 includes a connecting portion 21 having a contact 3 and a fixing portion 22 connected to the lower connector 1, the conductive portion extends into the lower connector 1 and is electrically connected to the contact 3, the lower connector 1 is provided with a limiting portion 4 for limiting the sliding deviation of the contact 3 along an electrical contact surface of the conductive portion, and the limiting portion 4 is abutted against and limited by the connecting portion 21.

When the upper connector and the lower connector 1 are plugged, the limiting part 4 is abutted against the connecting part 21, and the connecting part 21 is limited to drive the contact 3 to slide greatly along the electric contact surface of the conductive part, so that the contact 3 is prevented from being separated from the conductive part due to large deviation, the contact 3 is favorably and stably attached to the conductive part, and the upper connector and the lower connector 1 are ensured to be plugged in place. Meanwhile, the limiting part 4 limits the large-amplitude deviation of the contact 3 to avoid the contact 3 from contacting with the inner wall of the lower connector 1, the contact 3 which generates heat when electrified is prevented from melting the inner wall of the lower connector 1, the service life of the lower connector 1 is guaranteed, and potential safety hazards are eliminated.

When the upper connector and the lower connector 1 are not inserted in place, poor contact between the contact 3 and the conductive part is easily caused, and when the contact 3 and the conductive part are in poor contact, electric sparks are generated to cause abnormal overheating. For example, when the upper connector and the lower connector 1 are inserted obliquely, only a partial edge of the contact 3 contacts with the conductive part, and at this time, the contact 3 and the conductive part may cause sudden current change at the contact position due to an excessively small contact area, and then electric sparks occur to cause abnormal overheating of the contact 3 and the periphery. In order to prevent the contact 3 from overheating from being too close to the inner wall of the lower connector 1 to melt the lower connector 1, in this embodiment, an anti-melting interval for preventing the lower connector 1 from being melted is provided between the lower connector 1 and the contact 3, and the anti-melting interval is a minimum transverse interval between the inner wall of the lower connector 1 and the contact 3 when the connecting portion 21 abuts against the limiting portion 4. The arrangement of the anti-melting distance ensures that the contact 3 and the inner wall of the lower connector 1 have enough thickness for heat insulation, so that the contact 3 can be effectively prevented from being abnormally overheated to melt the inner wall of the lower connector 1, and the safety and the reliability are higher. In this embodiment, the anti-melting distance L is greater than or equal to 2mm, when L is smaller than 2mm, the distance between the contact 3 and the inner wall of the lower connector 1 is too close, the air between the contact 3 and the inner wall of the lower connector 1 is too thin to prevent a large amount of heat on the contact 3 from being transferred to the lower connector 1, and the plastic lower connector 1 is easily subjected to hot melting.

When the 360-degree cordless electric connector is adopted, when the kettle body is placed on the power base, the conductive part of the upper connector extends into the lower connector of the power base along with the kettle body, the conductive part extrudes the connecting part to be contacted with the contact (namely, the connecting part can move longitudinally), at the moment, the kettle body is not stably placed on the power base, or the upper connector and the lower connector are not installed with the kettle body/the power base properly, so that the conductive part is in poor contact with the contact, electric sparks are easy to generate, the temperature rise of the position is overhigh, and the service life of the shell of the upper connector or the lower connector is influenced.

Specifically, terminal 2 can be equipped with a plurality ofly and include first terminal, second terminal and third terminal, one in first terminal and the second terminal is zero line terminal, another is the live wire terminal, the third terminal is the earth wire terminal, lower connector 1 includes connector housing 11 down and is used for keeping apart the insulating wall 12 of different terminals 2, lower connector housing 11 and insulating wall 12 integrated into one piece, the setting of insulating wall 12 can prevent that live wire terminal and zero line terminal or earth wire terminal from taking place short circuit or corona discharge phenomenon near. In this embodiment, the limiting portion 4 is a limiting rib and is disposed on a side surface of the insulating wall 12 facing the terminal 2, and when the connecting portion 21 abuts against the limiting portion 4, a smaller one of a minimum distance between the contact 3 and the insulating wall 12 and a minimum distance between the contact 3 and the lower connector housing 11 is the anti-fuse distance. Similarly, the stopper portion 4 may be provided on the inner wall of the lower connector housing 11, and when the connecting portion 21 abuts against the stopper portion 4, the smaller one of the minimum distance between the contact 3 and the insulating wall 12 and the minimum distance between the contact 3 and the lower connector housing 11 may be the melting prevention distance. Of course, the insulating wall 12 and the inner wall of the lower connector housing 11 may be provided with the limiting portions 4, so that the connecting portion 21 is limited in more directions, and the contact 3 is ensured to be always attached to the conductive portion.

Connecting portion 21 is the bar structure, and fixed part 22 and contact 3 are located the both ends of connecting portion 21 respectively, and contact 3 radially lies in fixed part 22 inboard at connector 1 down, when guaranteeing to go up connector and connector 1 grafting target in place down, and connecting portion 21 keeps away from the one end of fixed part 22 and takes place enough big deformation and impel contact 3 to hug closely the conductive part, takes place conductive part and contact 3 contact failure when avoiding the insulating pot to vibrate, has guaranteed the reliability of insulating pot and the life of complete machine. In this embodiment, the maximum transverse distance S between the limiting portion 4 and the contact 3 in the length direction of the connecting portion 21 is not more than 8mm, so that the connecting portion 21 between the limiting portion 4 and the contact 3 is prevented from being deformed greatly due to overlong length, the connecting portion 21 is prevented from being deformed greatly to drive the contact 3 to generate large transverse offset, and the transverse distance between the contact 3 and the inner wall of the lower connector 1 is always larger than the anti-melting distance even if the electric kettle is acted by abnormal external force.

In this embodiment, the bottom of lower connector 1 still is equipped with fixed slot 13, and fixed part 22 joint is in fixed slot 13, and the long limit of connecting portion 21 is equipped with the spacing foot of restriction connecting portion 21 lateral rotation, and spacing foot is contradicted on the groove lateral wall of fixed slot 13. Spacing foot is contradicted in the groove lateral wall of fixed slot 13, prevents that connecting portion 21 from keeping away from fixed part 22 one end and rotating around fixed part 22 and cause contact 3 lateral shifting range too big, guarantees contact 3 and lower connector 1 inner wall interval more than or equal to prevents the melting interval all the time.

In order to ensure that the connection portion 21 has a certain elasticity in the plugging direction of the conductive portion to make the contact 3 tightly contact the conductive portion, the conductive portion can drive the contact 3 to move along the plugging direction of the conductive portion during the plugging process of the upper connector and the lower connector 1. Specifically, the connecting portion 21 includes a folding piece 211 for increasing the amount of elastic deformation of the connecting portion 21 in the conductive portion plugging direction and a mounting ring 212 for mounting the contact 3, two ends of the folding piece 211 are respectively connected with the mounting ring 212 and the fixing portion 22, and the connecting portion 21 abuts against the limiting portion 4 through a long edge of the folding piece 211 or the mounting ring 212. The arrangement of the folding sheet 211 increases the amount of elastic deformation of the connecting portion 21 in the insertion direction of the conductive portion, prevents the connecting portion 21 from being deformed irreversibly due to the pressing of the conductive portion, and ensures the service life of the terminal 2 and the lower connector 1. The mounting ring 212 is transversely arranged and surrounds the outer side of the contact 3, and the mounting ring 212 is higher than the folding piece 211. The mounting ring 212 transversely surrounds the outer side of the contact 3, so that the minimum distance between the contact 3 and the inner wall of the lower connector 1 is always larger than or equal to the transverse width of the mounting ring 212, and the safety and the reliability are higher; meanwhile, the mounting ring 212 is higher than the flap 211, so that when the upper and lower connectors 1 are mounted, the conductive part contacts the contact 3 first and drives the contact 3 and the mounting ring 212 to move along the plugging direction of the conductive part. Of course, the conductive portion and the contact 3 may not be in elastic contact but in rigid contact, and the stopper portion 4 may be provided to prevent the conductive portion and the contact 3 in rigid contact from sliding laterally due to an excessively small frictional force.

In this embodiment, in order to ensure that the conductive part can contact with the contact 3 when the upper connector is plugged into the lower connector 1 in any direction, the conductive part may be provided with a plurality of first conductive rings and second conductive rings, which are coaxially disposed, the first conductive rings and the second conductive rings are respectively in electrical contact with the first terminal and the second terminal, the second conductive rings are sleeved on the outer sides of the first conductive rings, the inner sides of the first conductive rings are provided with grounding shafts in electrical contact with the third terminal, and the grounding shafts protrude out of the first conductive rings and/or the second conductive rings in the plugging direction. When the upper connector and the lower connector 1 are plugged, the grounding shaft is firstly contacted with the third terminal, and the impact force in the plugging process is reduced. It will be appreciated that the grounding shaft may also be arranged not to protrude beyond the first and/or second conductive ring, but rather to protrude the contact 3 of the third terminal beyond the contact 3 of the first terminal and the contact 3 of the second terminal in the plugging direction of the lower connector 1. At the moment, the contact 3 on the third terminal is firstly contacted with the grounding shaft, so that the impact force in the plugging process is reduced.

In this embodiment, when the lower connector 1 is not mated with the upper connector, the connecting portion 21 and the limiting portion 4 may be separated, so that in the process of mating the upper connector and the lower connector 1 in an inserting manner, the contact 3 moves transversely first and then the connecting portion 21 abuts against the limiting portion 4, and therefore, the minimum distance between the contact 3 and the inner wall of the lower connector 1 when the connecting portion 21 abuts against the limiting portion 4 is the anti-melting distance. Of course, whether the upper connector and the lower connector 1 are mounted and matched or not, the connecting portion 21 always abuts against the limiting portion 4, and then the minimum distance between the contact 3 and the inner wall of the lower connector 1 is the anti-melting distance.

In this embodiment, the limiting portion 4 may also be a limiting block, a limiting protrusion, a limiting surface or a limiting post.

Example two:

as shown in fig. 3, the connecting portion 21 is further provided with support legs 213 for restricting the movement of the contacts 3 toward the upper connector, and the lower connector 1 is provided with support surfaces which are interference-fitted with free ends of the support legs 213. The terminal 2 is abutted to the supporting surface through the supporting leg 213 to realize that the contact 3 always faces upward to the connector, and the stable fit of the contact 3 and the conductive part is ensured. In this embodiment, the limiting portion 4 includes a limiting table 41 disposed on the inner wall of the lower connector 1, the limiting table 41 is specifically disposed on the inner top wall of the lower connector housing 11, the supporting surface is disposed on the top surface of the limiting table 41, the free end of the supporting leg 213 is further provided with a stopping sheet 214, and the stopping sheet 214 abuts against the peripheral side surface of the limiting table 41 to limit the movement of the contact 3. Therefore, the limiting table 41 is matched with the supporting leg 213, so that the contact 3 can face and stably adhere to the conductive part, the thermal melting insulation wall 12 or the lower connector shell 11 caused by overlarge offset of the contact 3 can be prevented, and the structures of the lower connector 1 and the terminal 2 are simplified.

Other contents not described in the present embodiment may refer to any of the above embodiments.

In addition to the preferred embodiments described above, other embodiments of the present invention are also possible, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, which should fall within the scope of the present invention defined by the appended claims.

Claims (10)

1. The utility model provides an electric kettle, includes the kettle body that is equipped with the connector and is equipped with the power base of connector down, its characterized in that, the kettle body through the cooperation of upper and lower connector for power base 360 degrees rotations, the upper connector is equipped with the conductive part, is equipped with the terminal in the connector down, the terminal including have the connecting portion of contact and connect in the fixed part of connector down, the conductive part stretches into down in the connector and contacts with the contact electrical contact, the connector is equipped with the spacing portion of restriction contact along the electric contact surface sliding migration of conductive part down, spacing portion contradicts spacingly with connecting portion.

2. An electric kettle according to claim 1, wherein a melting prevention space for preventing the lower connector from being melted is provided between the lower connector and the contact, and the melting prevention space is a minimum transverse space between the inner wall of the lower connector and the contact when the connecting portion abuts against the limiting portion.

3. An electric kettle according to claim 2, wherein the melt-proof distance L is greater than or equal to 2 mm.

4. An electric kettle as claimed in claim 1, wherein the terminals are provided in plurality, the lower connector comprises a lower connector housing and an insulating wall for isolating different terminals, the position limiting part is provided on the side of the insulating wall facing the terminals and/or on the inner wall of the lower connector housing; or the limiting part is a limiting column, a limiting block, a limiting bulge, a limiting surface or a limiting rib.

5. An electric kettle as claimed in claim 1, wherein the connection part is further provided with support legs for limiting the movement of the contacts towards the upper connector, and the lower connector is provided with a support surface for interference engagement with the free ends of the support legs.

6. An electric kettle according to claim 5, wherein the limiting part comprises a limiting platform arranged on the lower connector, the supporting surface is arranged on the top surface of the limiting platform, and the free end of the supporting leg is further provided with a stopping sheet which abuts against the peripheral side surface of the limiting platform.

7. An electric kettle as claimed in any one of claims 1 to 6, wherein the connecting part is a strip-shaped structure, the fixing part and the contact are respectively arranged at two ends of the connecting part, and the maximum transverse distance S between the limiting part and the contact in the length direction of the connecting part is less than or equal to 8 mm.

8. The electric kettle as claimed in claim 7, wherein the bottom of the lower connector is further provided with a fixing groove, the fixing portion is clamped in the fixing groove, the long edge of the connecting portion is provided with a limiting pin for limiting the transverse rotation of the connecting portion, and the limiting pin abuts against the side wall of the fixing groove.

9. An electric kettle according to any one of claims 1 to 6, wherein the connecting part comprises a folding piece for increasing the elastic deformation of the connecting part in the plugging direction of the conductive part and a mounting ring for mounting the contact, the two ends of the folding piece are respectively connected with the mounting ring and the fixing part, the connecting part abuts against the limiting part through the long edge of the folding piece or the mounting ring, the mounting ring is transversely arranged and surrounds the outer side of the contact, the mounting ring is higher than the folding piece, and the conductive part drives the contact and the mounting ring to move along the plugging direction of the conductive part.

10. An electric kettle according to any one of claims 1 to 6, characterized in that the conductive part is provided with a plurality of and comprises a first conductive ring and a second conductive ring which are coaxially arranged, the second conductive ring is sleeved outside the first conductive ring, the inner side of the first conductive ring is provided with a grounding shaft, and the grounding shaft protrudes out of the first conductive ring and/or the second conductive ring in the plugging direction;

or, the conductive part is equipped with a plurality ofly and including coaxial first conducting ring and the second guide ring that sets up, and the outside of first conducting ring is located to the second conducting ring cover, and first conducting ring inboard is equipped with the ground connection axle, and the terminal is equipped with a plurality ofly and includes the first terminal with first conducting ring electrical contact, the second terminal with second conducting ring electrical contact and the third terminal with ground connection axle electrical contact, and the contact of third terminal is protruding out in the contact of first terminal and the contact of second terminal on the grafting direction of connector down.

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