CN210535580U - Anti-repeated dry-burning temperature controller - Google Patents

Abstract

The utility model discloses a prevent repeated dry combustion method temperature controller, including the base, the base lower extreme is provided with the bayonet joint, and the base upper end is provided with iron plate, and the base upper end is provided with dry combustion method outage subassembly, and dry combustion method outage subassembly is including movable contact piece and static contact, the base upper end is provided with the swing piece, and this swing piece is including stopping portion, and stopping portion can form locking or unblock to the movable contact piece along with the swing of swing piece, and the base upper end still is provided with the pendulum rod that can elastically reset, the one end of pendulum rod is fixed with the pedestal connection, and the other end of pendulum rod has downwardly extending and wears to establish the conflict end in the bayonet joint, and the pendulum rod compresses tightly downwards when the bayonet joint is not coupled on the swing piece and keeps at unblock state with its stopping portion, and the pendulum rod other end upwarps when the bayonet joint, and stopping portion resets the swing and is locking state along with. The utility model discloses simple structure, spare part are less, and convenient assembling.

Description

Anti-repeated dry-burning temperature controller

Technical Field

The utility model relates to a prevent repeated dry combustion method temperature controller.

Background

The tradition is used for electric kettle, the broken wall machine, the temperature controller of white small household appliances such as soybean milk machine is generally including the base, the base lower extreme is provided with the bayonet joint, the base upper end is provided with iron plate, the upper end both sides department of base all be provided with conductive component and with the dry combustion method outage subassembly of conductive component cooperation break-make, conductive component is including movable contact and static contact, movable contact one end elasticity compresses tightly on the static contact, dry combustion method outage subassembly can drive movable contact one end court and the motion of static contact separation direction when dry combustion method, thereby can make the circuit disconnection, prevent dry combustion method. In a traditional temperature controller, a dry-burning power-off component of the traditional temperature controller generally adopts thermosensitive metal, and the thermosensitive metal can generate deformation and bounce when the temperature exceeds a threshold value, but can be deformed and reset when the temperature returns to normal. In this way, the circuit is turned on again, which causes the small white household appliances to be heated repeatedly, resulting in power waste and certain potential safety hazard.

CN 209232670U discloses a temperature controller for preventing frequent dry burning, wherein a T-shaped swinging piece is arranged at the upper end of a base, the swinging piece comprises a rotating shaft and an extension arm vertically connected with the middle part of the rotating shaft, two ends of the rotating shaft respectively extend to two conductive components and are provided with backstop parts rotating synchronously with the rotating shaft, the extension arm can naturally fall under the action of gravity and drive the backstop parts to rotate and extend into a motion path at one end of a movable contact, the backstop parts can form one-way limit fit with the movable contact to prevent the movable contact from resetting when being positioned on the motion path at one end of the movable contact, one side of the rotating shaft of the swinging piece can realize unlocking and self-locking of the movable contact based on the up-and-down swinging of the extension arm, the base is provided with a push rod capable of sliding upwards, the lower end of the push rod extends into a rocker, the upper end of the base is also provided with, the rocker is provided with a spring which presses the other end of the rocker upwards at the end part of the extension arm. When the plug connector of temperature controller is pegged graft with the coupler mutually, the ejector pin lower extreme upwards slides under the promotion of coupler, because ejector pin upper end and wane one end counterbalance, it drives wane one end upwarp in the gliding while upwards, the other end swings downwards, the extension arm can be after losing the ascending effort of wane other end to its, can naturally droop downwards under the action of gravity, and then make the whole swing along the axis of rotation swing of the swing piece of T type, at this moment, the stopping portion at swing piece axis of rotation both ends stretches into to the motion path of movable contact one end along with the axis of rotation, can constitute the one-way spacing cooperation that prevents the movable contact and reset with the movable contact when stopping the position on the motion path of movable contact one end, realize the auto-lock of movable contact. When the temperature controller is disconnected during dry combustion, the movable contact piece moves towards the direction far away from the static contact piece under the drive of the dry combustion power-off assembly and forms one-way limiting fit with the backstop part, so that the movable contact piece can be prevented from being in conductive contact with the static contact piece again when resetting, and repeated frequent dry combustion can be avoided. When the plug-in connector of the temperature controller is separated from the coupler, the ejector rod loses the upward acting force, so that the other end of the wane is bounced

The spring effect is lower heavy upwards to compress tightly at extension arm tip, and the extension arm swings up under the wane effect, and then makes stopping portion rotate on the motion path of driven contact piece one end and deviate from, makes the movable contact can rely on self elasticity to reset and with the contact of leading to the electricity again, realizes the unblock of movable contact piece, the next use of the temperature controller of being convenient for.

The above patent has the following disadvantages in practical application: the swinging and resetting of the swinging piece need to depend on the transmission matching among the components such as the ejector rod, the wane, the spring and the like, so that the temperature controller has more integral parts, complex structure and more trouble in assembly.

SUMMERY OF THE UTILITY MODEL

The utility model provides a to the not enough of prior art, the utility model provides a prevent temperature controller of repeated dry combustion method, its simple structure, spare part are less, and convenient assembling.

In order to realize the aim, the utility model provides a temperature controller for preventing repeated dry burning, which comprises a base, wherein the lower end of the base is provided with a plug, the upper end of the base is provided with an iron plate, the upper end of the base is provided with a dry burning power-off component, the dry burning power-off component comprises a movable contact piece and a static contact piece, the upper end of the base is provided with a swinging piece, the swinging piece comprises a backstop part which can swing along with the swinging piece to lock or unlock the movable contact spring, the upper end of the base is also provided with a swinging rod which can elastically reset, one end of the swing rod is fixedly connected with the base, the other end of the swing rod is provided with a contact end which extends downwards and is arranged in the plug in a penetrating way, when the plug connector is not coupled, the swing rod is pressed downwards on the swing piece and keeps the backstop part of the swing piece in an unlocking state, when the plug connector is coupled, the other end of the swing rod is tilted upwards, and the backstop part resets and swings along with the swing piece and is in a locking state.

The beneficial effects of the above technical scheme are: because the other end of the oscillating bar is provided with the abutting end which extends downwards and penetrates through the plug connector, when the plug connector of the temperature controller is coupled, the abutting end is pushed to move upwards and the other end of the oscillating bar upwarps, the backstop part can reset and swing along with the oscillating piece and form locking on the movable contact piece, and therefore repeated dry burning can be prevented; when the plug connector of the temperature controller is separated, the other end of the swing rod resets based on the elasticity of the other end of the swing rod, and the swing rod presses the swing piece downwards again, and keeps the stopping part in an unlocking state, so that the temperature controller is convenient to use next time. Compared with the prior art, the utility model, the swing of swing piece and reset only involve a spare part of pendulum rod, therefore the structure is more simple, spare part also still less, has reduced the overall cost, also can conveniently assemble.

Furthermore, the swing rod is formed by bending a metal wire.

The technical scheme has the advantages that: the cost is lower, makes things convenient for the processing manufacturing of pendulum rod, and the metal material can provide the elasticity that resets after pendulum rod self swings.

Furthermore, one end of the metal wire is bent downwards to form an inserting part, and the upper end of the base is provided with a jack which is matched with the inserting part to be inserted and fixed.

The technical scheme has the advantages that: the connection between one end of the swing rod and the base is convenient.

Furthermore, the upper end of the base is provided with a pit, convex walls are arranged around the pit, the jack is arranged on the convex walls, the jack can be divided into an upper part and a lower part by taking the inner wall at the bottom of the pit as a boundary, the upper part of the jack is provided with a through groove communicated to the pit, and the lower part of the jack and the insertion part form insertion positioning matching.

The technical scheme has the advantages that: the lower part that the jack was inserted downwards to the jack can be followed to pendulum rod one end grafting portion and constitute location fit, is convenient for connect fixedly, and the setting that leads to the groove can supply the pendulum rod other end side direction to stretch into the pit, can prevent simultaneously that the pendulum rod other end from using the jack to appear rotating as the axle center, has improved the complex stability between pendulum rod and the swing piece.

Furthermore, the contact end is formed by a first vertical section, a transverse section and a second vertical section which are formed by sequentially bending the other end of the metal wire, and the lower ends of the first vertical section and the second vertical section are respectively connected with two ends of the transverse section.

The technical scheme has the advantages that: the contact end is formed by bending the other end of the metal wire for multiple times, so that the contact end is convenient to process; because the butt end comprises first vertical section, horizontal section and the vertical section of second, can improve the intensity of butt end, be difficult to take place the bending, when bayonet joint is connected with the coupler, its horizontal section is used for the coupler to contradict, stability when can improving the conflict, and the position of contradicting is difficult to appear wearing and tearing.

Further, the swinging member includes a projection portion which abuts against the movable contact piece and holds the movable contact piece at a position separated from the stationary contact piece when the plug connector is not coupled.

The technical scheme has the advantages that: when the plug connector is not coupled, the protruding part can be abutted on the movable contact piece and enables the static contact piece and the movable contact piece to be separated, so that the function of 'kettle power off' can be realized, when a host with a temperature controller is separated from the base, an internal circuit of the host can be rapidly cut off, the leakage is reduced, and the safety is improved. The utility model discloses a temperature controller can realize preventing repetition dry combustion method and carrying two kinds of functions of kettle outage through the same part (swing piece and pendulum rod promptly), has simplified the structure of temperature controller, makes spare part still less, reduce cost, convenient assembly.

Further, dry combustion method outage subassembly is two sets of, and the swing piece is including the axis of rotation, and the both ends of axis of rotation correspond two sets of dry combustion method outage subassembly settings respectively and the both ends of axis of rotation all include stopping portion, be connected with the extension arm with stopping portion homonymy position in the axis of rotation, the extension arm with the pendulum rod cooperation compresses tightly, the bellying setting on the extension arm.

The technical scheme has the advantages that: based on lever principle, the effect of effort between pendulum rod and the swing piece can be improved in the setting of extension arm, and two sets of dry combustion method outage subassemblies can be respectively with the locking of stopping portion cooperation or unblock at axis of rotation both ends, improve the fault-tolerant rate.

Drawings

FIG. 1 is a structural diagram 1 of an embodiment of the anti-repetitive dry-heating temperature controller of the present invention;

FIG. 2 is an exploded view of the anti-repetitive dry-heating temperature controller according to the embodiment of the present invention;

FIG. 3 is a structural diagram 2 of the anti-repetitive dry-heating temperature controller according to the embodiment of the present invention;

FIG. 4 is a structural diagram of a base in an embodiment of the anti-repetitive dry-heating temperature controller of the present invention;

FIG. 5 is a schematic view of the assembly of a swing link in an embodiment of the anti-repetitive dry-heating thermostat of the present invention;

FIG. 6 is a structural diagram of a swing rod in an embodiment of the anti-repetitive dry-heating temperature controller of the present invention;

FIG. 7 is a structural diagram of a swinging member in an embodiment of the anti-repetitive dry-heating temperature controller of the present invention;

FIG. 8 is a schematic view of the anti-repetitive dry-heating thermostat according to the present invention, wherein the backstop portion is in an unlocked state;

FIG. 9 is a schematic view of the anti-repetitive dry-heating thermostat according to the present invention, showing the locking state of the backstop portion in FIG. 1;

FIG. 10 is a schematic view of the anti-repetitive dry-heating thermostat according to the present invention, in which the backstop portion is in a locked state 2;

fig. 11 is an enlarged view of a portion a in fig. 5.

Detailed Description

The embodiment of the anti-repetitive dry-burning temperature controller of the utility model is shown in figures 1-11: including base 1, base 1 lower extreme is provided with bayonet joint 11, base 1 upper end is provided with iron plate 2, base 1 upper end is provided with dry combustion method outage subassembly, dry combustion method outage subassembly is including movable contact spring 31 and static contact 32, movable contact spring 31 elasticity compresses tightly on static contact 32 when the bayonet joint is not coupled, make the circuit keep the on-state, dry combustion method outage subassembly is still including setting up the heat-sensitive shell fragment 21 on iron plate 2, heat-sensitive shell fragment 21 can be heated deformation when dry combustion method, and drive movable contact spring 31 towards keeping away from the motion of static contact 32 direction, thereby can make the circuit disconnection.

As shown in fig. 2, 4 and 5, the upper end of the base 1 is provided with a swinging member 4, the swinging member 4 comprises a backstop portion 41, the backstop portion 41 can swing along with the swinging member 4 to lock or unlock the movable contact piece 31, the locking of the movable contact piece 31 means that the movable contact piece 31 is prevented from being separated from the static contact piece 32 and then contacted again, and the unlocking of the movable contact piece 31 means that the movable contact piece 31 can be normally reset and contacted with the static contact piece 32. The upper end of the base 1 is further provided with a swing rod 5 capable of elastically resetting, one end of the swing rod 5 is fixedly connected with the base 1, the other end of the swing rod 5 is provided with a contact end 52 which extends downwards and penetrates through the plug 11, the swing rod 5 is pressed downwards on the swinging piece 4 and keeps the stopping part 41 of the swinging piece in an unlocking state when the plug is not coupled, the other end of the swing rod 5 upwarps when the plug 11 is coupled, and the stopping part 41 resets and swings along with the swinging piece 4 and is in a locking state. The returning swing of the swing member 4 and the retaining portion 41 may be performed by being pushed by an elastic member such as a spring or a leaf spring, or may be a natural swing generated by the center of gravity position of the swing member 4 itself being displaced.

As shown in fig. 5 and 6, the swing rod 5 is formed by bending a metal wire, the metal wire has certain elasticity, one end of the metal wire is bent downward to form an insertion portion 51, and the upper end of the base 1 is provided with an insertion hole 12 which is matched with the insertion portion 51 and is inserted and fixed.

As shown in fig. 4, 5, and 11, a concave pit 13 is formed at the upper end of the base 1, a convex wall 14 is formed around the concave pit 13, the insertion hole 12 is formed in the convex wall 14, the insertion hole 12 is divided into an upper portion 121 and a lower portion 122 by taking the inner wall of the bottom of the concave pit 13 as a boundary, the insertion part 51 can be inserted into the lower portion 122 along the upper portion 121, a through groove 123 communicated to the concave pit 13 is formed in the upper portion 121 of the insertion hole 12, the lower portion 122 of the insertion hole 12 and the insertion part 51 form an insertion positioning fit, preferably an interference insertion positioning fit, and can be fixed by glue after insertion, inner walls on two sides of the through groove 123 can limit the swing rod 5, so as to prevent the swing rod 5 from rotating, and enable the swing rod 5 to.

As shown in fig. 6, the contact end 52 is formed by a first vertical section 521, a transverse section 522 and a second vertical section 523, which are formed by sequentially bending the other end of the metal wire, the first vertical section and the second vertical section are preferably parallel to each other, and the lower ends of the first vertical section 521 and the second vertical section 523 are respectively connected with two ends of the transverse section 522. A through hole (not labeled in the figure) communicated with the plug 11 is arranged in the pit 13 of the base 1, and the contact end 52 is arranged in the plug 11 after penetrating through the through hole.

The swinging member 4 includes a projection 44 which abuts on the movable contact piece 31 when the plug 11 is not coupled and holds the movable contact piece 31 at a position separated from the stationary contact piece 32 (a state shown in fig. 8). Since the movable contact piece 31 has restoring elasticity, it can give a pretightening force for restoring and swinging the swinging member 4 when abutting against the boss 44, and can improve the restoring and swinging effect of the swinging member 4.

In this embodiment, the dry burning power-off assemblies are preferably two sets, the swinging member 4 includes two rotating shafts 43, the rotating shafts 43 are pivotally connected with the base 1, two ends of the rotating shafts 43 are respectively disposed corresponding to the two sets of dry burning power-off assemblies, two ends of the rotating shafts 43 both include the retaining portions 41, an extending arm 42 is connected to the rotating shaft 43 at the same side position as the retaining portions 41, the extending arm 42 is pressed with the swing rod 5 in a matching manner, the protruding portion 44 is preferably disposed at the lower end of the extending arm 42, and the acting force of the protruding portion 44 on the movable contact 31 depends on the elastic acting force of the swing rod 5 pressed on the swinging member 4.

Fig. 8, 9 and 10 respectively show three states of use of the oscillating piece 4, the oscillating bar 5 and the moving and static contact pieces (31, 32) in the present embodiment, and the following explanation is made on the principle of the present invention in combination with three state of use diagrams:

in the state shown in fig. 8, the plug connector 11 is not in the plug coupling state, the swing link 5 presses downward on the extension arm 42 of the swing member 4 based on its own elasticity, and keeps the retaining portion 41 at the end of the swing member 4 in the unlocking state, the retaining portion 41 in the unlocking state is relatively far away from the movable contact piece 31, and at this time, the protrusion 44 on the extension arm 42 presses on the movable contact piece 31 under the action of the swing link 5, so that the movable contact piece 31 and the static contact piece 32 are kept at the separated position, thereby realizing the power-off function of the kettle.

In the state shown in fig. 9, the plug connector 11 is in the plug coupling state, and at this time, the other end of the swing rod 5 is pushed to tilt up, the swing piece 4 resets and swings and drives the stopping portion 41 to move to the moving path of the movable contact piece 31, and forms the locking to the movable contact piece 31, the swinging piece 4 can also cause the swinging piece 4 to swing based on the elastic acting force of the movable contact piece 31 acting on the convex part 44 besides the self gravity, the convex part 44 reduces or does not apply force to the movable contact piece 31 after swinging along with the swinging piece 4, the movable contact piece 31 can reset and contact with the static contact piece 32, thereby the internal circuit of the main machine is connected, when the backstop part 41 is positioned on the moving path of the movable contact piece 31, the one-way limit fit can be formed on the movable contact piece 31, the movable contact piece 31 can only move towards the direction separated from the static contact piece 32, but can not move towards the direction contacting with the static contact piece 32, thereby realizing the function of preventing repeated dry burning;

in the state shown in fig. 10, the retaining portion 41 is located on the moving path of the movable contact piece 31, the movable contact piece 31 is driven by the heat-sensitive elastic sheet 21 to move in the direction of separating from the static contact piece 32 during dry burning, when the movable contact piece 31 abuts against the retaining portion 41, the movable contact piece 31 passes over the retaining portion 41 and moves to the other side of the retaining portion 41 based on the elasticity of the movable contact piece 31, at this time, the retaining portion 41 can form a limit on the reset direction of the movable contact piece 31, the movable contact piece 31 is prevented from being reset and communicated with the static contact piece 32, and only when the plug 11 is coupled again, the retaining portion 41 unlocks the movable contact piece 31, and the movable contact piece 31 and the static contact piece 32 can be contacted and.

The above examples are only one of the preferred embodiments of the present invention, and the general changes and substitutions performed by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a prevent repetition dry combustion method temperature controller, includes the base, and the base lower extreme is provided with the bayonet joint, and the base upper end is provided with iron plate, and the base upper end is provided with dry combustion method outage subassembly, and dry combustion method outage subassembly is including movable contact and static contact, the base upper end is provided with the swing piece, and this swing piece is including stopping portion, and stopping portion can form locking or unblock its characterized in that to the movable contact along with the swing of swing piece: the base upper end still is provided with the pendulum rod that can elastically reset, the one end and the base of pendulum rod are connected fixedly, and the other end of pendulum rod has downwardly extending and wears to establish the conflict end in the bayonet joint, and the pendulum rod compresses tightly downwards on the swinging piece and keeps its stopping portion at the unblock state when the bayonet joint is not coupled, and the pendulum rod other end upwarps when the bayonet joint is coupled, and stopping portion resets the swing and is locking state along with the swinging piece.

2. The anti-repetitive dry-heating temperature controller according to claim 1, characterized in that: the swing rod is formed by bending and processing a metal wire.

3. The anti-repetitive dry-heating temperature controller according to claim 2, characterized in that: one end of the metal wire is bent downwards to form an inserting part, and the upper end of the base is provided with a jack which is matched with the inserting part to be inserted and fixed.

4. The anti-repetitive dry-heating temperature controller according to claim 3, characterized in that: the upper end of the base is provided with a pit, convex walls are arranged around the pit, the jack is arranged on the convex walls, the jack can be divided into an upper part and a lower part by taking the inner wall at the bottom of the pit as a boundary, the upper part of the jack is provided with a through groove communicated to the pit, and the lower part of the jack and the insertion part form insertion positioning fit.

5. The anti-repetitive dry-heating temperature controller according to claim 2, characterized in that: the contact end is formed by a first vertical section, a transverse section and a second vertical section which are formed by sequentially bending the other end of the metal wire, and the lower ends of the first vertical section and the second vertical section are respectively connected with the two ends of the transverse section.

6. The anti-repetitive dry-heating temperature controller according to claim 1, 4 or 5, wherein: the swinging piece comprises a convex part which is abutted against the movable contact piece when the plug connector is not coupled and keeps the movable contact piece at a position separated from the static contact piece.

7. The anti-repetitive dry-heating temperature controller according to claim 6, characterized in that: the dry combustion method power-off component is characterized in that the dry combustion method power-off components are two groups, the swinging component comprises a rotating shaft, two ends of the rotating shaft correspond to two groups of dry combustion method power-off components respectively, two ends of the rotating shaft respectively comprise a stopping portion, an extending arm is connected with the position on the same side of the stopping portion on the rotating shaft, the extending arm is matched with the oscillating rod to be compressed, and the protruding portion is arranged on the extending arm.

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