CN212542278U

CN212542278U - Safety device of temperature controller

Info

Publication number: CN212542278U
Application number: CN202021539724.0U
Authority: CN
Inventors: 郭颖
Original assignee: Xiamen Shengming Electronic Co ltd
Current assignee: Xiamen Shengming Electronic Co ltd
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2021-02-12
Anticipated expiration: 2030-07-30

Abstract

The application relates to a temperature controller safety device, which comprises an upper safety piece, a lower safety piece, an insulating ejector rod and a fusible substance arranged at the bottom of the insulating ejector rod, wherein the upper safety piece and the lower safety piece are arranged on an insulating ring frame, the free end of the lower safety piece forms a bent arm, and the upper end of the insulating ejector rod is supported on the arm body of the bent arm. The lower safety piece comprises an elastic alloy layer and a conductive alloy layer, and the elastic alloy layer and the conductive alloy layer are compounded and integrally formed. The conductive alloy layer is arranged as a middle layer, and the elastic alloy layer is arranged on two sides of the thickness direction of the conductive alloy layer. This application has the effect that improves temperature controller safeties's electrically conductive stability.

Description

Safety device of temperature controller

Technical Field

The application relates to the technical field of thermosensitive switch devices, in particular to a safety device of a temperature controller.

Background

At present, a temperature controller is arranged in household appliances like an electric iron, a safety device is arranged in the temperature controller, and when the working temperature of an electric heating workpiece of the household appliance rises to a set over-limit temperature point, the safety device can prevent the equipment from continuously running through a tripping function.

The chinese patent with the publication number of CN202067727U discloses a temperature controller safety device, which comprises an upper safety sheet, a lower safety sheet, an insulating ejector rod and a fusible material arranged at the bottom of the insulating ejector rod, wherein the fixed ends of the upper safety sheet and the lower safety sheet are fixed on an insulating ring frame of the temperature controller, the insulating ejector rod supports the lower safety sheet and the upper safety sheet and enables the free ends of the upper safety sheet and the lower safety sheet to contact, and the lower safety sheet is connected with a temperature control adjusting device of the temperature controller; when the electric appliance works abnormally, the fusible material is fused to cause the insulating ejector rod to descend, and the upper safety piece is separated from the lower safety piece, so that the effect of power-off protection is achieved. In order to ensure good conductivity and elasticity of the lower safety disc, the lower safety disc is fixed by matching an elastic alloy layer and a conductive alloy layer, the elastic alloy layer is usually set to be a stainless steel disc, and the conductive alloy layer is set to be a copper disc.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the elastic alloy layer and the conductive alloy layer are directly laminated and fixed on the insulating ring frame, and the conductive alloy layer is preferably made of copper, aluminum and other metals with lower hardness, is easy to deform in the production and processing process and influences the conductive stability of the safety device, so the improvement is needed.

SUMMERY OF THE UTILITY MODEL

In order to improve temperature controller safeties's electrically conductive stability, this application provides a temperature controller safeties.

The application provides a temperature controller safeties adopts following technical scheme:

the utility model provides a temperature controller safeties, includes the fusible material of last rupture disc, lower rupture disc, insulating ejector pin and insulating ejector pin bottom, go up rupture disc and lower rupture disc and set up on insulating ring frame, the free end of lower rupture disc forms a curved boom, the upper end top of insulating ejector pin is held on the arm body of this curved boom, the rupture disc includes elastic alloy layer and conductive alloy layer down, elastic alloy layer and the compound integrated into one piece of conductive alloy layer.

Through adopting above-mentioned technical scheme, under the elasticity of rupture disc and the electrically conductive condition under guaranteeing, carry out compound integrated into one piece setting with elasticity alloy-layer and conductive alloy-layer, yielding risk in the conductive alloy-layer production transportation of direct coincide has been eliminated in the design of compound integrated into one piece's rupture disc, improves temperature controller safeties's electrically conductive stability.

Preferably, the conductive alloy layer is provided as an intermediate layer, and the elastic alloy layer is provided on both sides in a thickness direction of the conductive alloy layer.

Through adopting above-mentioned technical scheme, set up the elastic alloy layer on the both sides of conductive alloy layer, the elastic alloy layer can protect the conductive alloy layer of intermediate level, and simultaneously, lower insurance piece has the elasticity demand, and double-deck elastic alloy layer will make lower insurance piece have better elastic property, so set up the performance that will improve lower insurance piece to a certain extent.

Preferably, the lower safety plate further comprises a fixing ring, an elastic bent arm and a free end plate which are sequentially connected, the fixing ring is sleeved on the insulating ring frame, the fixing ring is integrally connected with the elastic bent arm and the free end plate to form a C-shaped structure, the upper end of the insulating ejector rod is connected to the connecting part of the elastic bent arm and the free end plate, and the free end plate is used for installing a contact which is electrically contacted with the upper safety plate.

Through adopting above-mentioned technical scheme, be provided with solid fixed ring on the lower safety disc and be convenient for the fixed of lower safety disc, the setting of free end plate will be convenient for the installation of contact on the lower safety disc, and the setting of elasticity bent arm will be convenient for realize that the free end of lower safety disc carries out stable the reseing when insulating ejector pin descends.

Preferably, one end of the free end plate, which is far away from the elastic bent arm, is obliquely and downwards arranged in the direction far away from the upper safety plate.

By adopting the technical scheme, the free end plate is arranged to incline downwards, so that when the lower safety piece is separated from the upper safety piece, the contact on the upper safety piece is sufficiently far away from the contact on the lower safety piece, the upper safety piece is prevented from being electrically reconnected with the lower safety piece due to external factors, and the safety performance is further improved.

Preferably, the free end plate comprises an inclined part and a horizontal part, the upper end of the inclined part is connected with the elastic bent arm, the lower end of the inclined part is connected with the horizontal part, and the horizontal part is used for installing a contact on the lower safety disc.

Through adopting above-mentioned technical scheme, including rake and horizontal part through setting up the free end plate, the setting of rake will guarantee that the contact on the rupture disc and the contact of last rupture disc are fully kept away from, and the setting of horizontal part will make the contact of lower rupture disc and the contact surface of the contact of last rupture disc be in parallel state to guarantee the stability of the contact of lower rupture disc and the contact electrical contact of last rupture disc.

Preferably, a through hole is formed in the joint of the elastic bent arm and the free end plate, and the through hole is used for penetrating and jacking the upper end of the insulating ejector rod.

By adopting the technical scheme, the groove which is arranged in a shape of a frustum of a cone is formed by punching on the lower safety plate in the prior art, so that the insulating ejector rod can be conveniently jacked up, but the groove is formed by punching, and due to different local deformation, cracks are easily generated, so that the yield of products is low; consequently this application will be fixed through the through-hole in lower safety plate in order to supply insulating ejector pin upper end location to guarantee that insulating ejector pin is stable with lower safety plate jack-up, the yields of safety plate under the further improvement simultaneously.

Preferably, one side of the through hole is provided with an annular attaching portion, the attaching portion is arranged on one side, away from the insulating ejector rod, of the lower safety piece, and the outer surface of the upper end of the insulating ejector rod is attached to the inner side of the attaching portion.

Through adopting above-mentioned technical scheme, be provided with laminating portion with the further connection stability of guaranteeing insulating ejector pin and lower rupture disk.

Preferably, the attaching portion is formed by punching a through hole in the lower rupture disc by a punching device.

Through adopting above-mentioned technical scheme, through adopting stamping forming's mode to form laminating portion, the shaping mode is simple.

In summary, the present application includes at least one of the following beneficial technical effects:

the lower safety plate is formed by compounding the elastic alloy layer and the conductive alloy layer into a whole, so that the risk that the conductive alloy layer is easy to deform in production and transportation when the lower safety plate is directly superposed is eliminated, and the conductive stability of the temperature controller safety device is improved;

through the through holes and the fitting parts arranged at the elastic bent arms and the free end plates, the insulating ejector rod can be stably jacked up conveniently, the forming mode is simple, and the forming yield of the lower safety plate is improved;

the free end plate comprises the inclined part and the horizontal part, the horizontal part is arranged to ensure that the contact on the lower safety piece is stably contacted with the contact on the upper safety piece, and the inclined part is arranged to ensure that the contact on the lower safety piece is sufficiently far away from the contact on the upper safety piece during power failure.

Drawings

Fig. 1 is a schematic structural diagram of a thermostat safety device according to an embodiment of the present application, in which a fusible material is hidden;

FIG. 2 is a schematic view of a thermostat safety device according to an embodiment of the present application;

fig. 3 is a schematic layer structure diagram of a lower safety disc of a temperature controller safety device according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a lower safety disc of a safety device of a temperature controller according to an embodiment of the present application;

fig. 5 is a schematic view of the structure of embodiment 2 of the present application.

Reference numerals: 1. an upper safety disc; 2. a lower safety disc; 21. an elastic alloy layer; 22. a conductive alloy layer; 3. an insulating ejector rod; 4. a meltable substance; 5. an insulating ring frame; 6. a fixing ring; 7. an elastic curved arm; 8. a free end plate; 81. an inclined portion; 82. a horizontal portion; 9. a through hole; 10. a bonding section; 11. an electric connection part; 12. a conductive portion; 13. a fixed part.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a temperature controller safety device.

Example 1:

referring to fig. 1 and 2, the safety device comprises an upper safety plate 1, a lower safety plate 2, an insulating ejector rod 3 and a fusible material 4 arranged at the bottom of the insulating ejector rod 3, wherein the upper safety plate 1 and the lower safety plate 2 are fixed on an insulating ring frame 5 in a riveting and clamping manner, contacts are fixed on the upper safety plate 1 and the lower safety plate 2, a bent arm is formed at the free end of the lower safety plate 2, the upper end of the insulating ejector rod 3 is supported on the arm body of the bent arm, the fusible material 4 is in contact with an electric heating workpiece, and when the electric heating workpiece exceeds a preset temperature, the fusible material 4 is melted and causes the insulating ejector rod 3 to descend, so that the lower safety plate 2 loses the supporting effect of the insulating ejector rod 3, the electric connection relationship between the upper safety plate 1 and the lower safety plate 2 is realized, and the effect of power failure is realized.

Referring to fig. 1 and 3, the lower rupture disc 2 includes an elastic alloy layer 21 and a conductive alloy layer 22, and the elastic alloy layer 21 and the conductive alloy layer 22 are integrally formed.

Further, referring to fig. 1 and 3, the conductive alloy layer 22 is disposed as an intermediate layer, and the elastic alloy layer 21 is disposed on both sides of the conductive alloy layer 22 in the thickness direction. Wherein, the conductive alloy layer 22 is provided as a metal having good conductivity, the specific conductive alloy layer 22 may be provided as a copper sheet, the elastic alloy layer 21 is provided as a metal having good elastic properties, and the specific elastic alloy layer 21 may be provided as a stainless steel sheet.

Referring to fig. 1 and 4, the lower rupture disc 2 further includes a fixing ring 6, an elastic bent arm 7 and a free end plate 8, which are connected in sequence, the fixing ring 6 is fixed on the insulating ring frame 5 in a sleeved manner, and the fixing ring 6 is integrally connected with the elastic bent arm 7 and the free end plate 8 to form a "C" shape.

Referring to fig. 1 and 4, a through hole 9 is formed at the joint of the elastic bent arm 7 and the free end plate 8, an attaching portion 10 which is annularly arranged is further arranged at one side end, away from the insulating ejector rod 3, of the through hole 9 on the lower safety plate 2, the inner side surface of the attaching portion 10 is attached to the outer surface of the upper end of the insulating ejector rod 3, and the attaching portion 10 is formed by punching the through hole 9 by a punching device.

Referring to fig. 1 and 4, the free end plate 8 includes an inclined portion 81 and a horizontal portion 82, an upper end of the inclined portion 81 is connected to the elastic bent arm 7, a lower end of the inclined portion 81 is connected to the horizontal portion 82, the horizontal portion 82 is used for mounting a contact on the lower rupture disc 2, the horizontal portion 82 is provided to ensure stable contact between the contact on the lower rupture disc 2 and the contact on the upper rupture disc 1, and the inclined portion 81 is provided to ensure sufficient distance between the contact on the lower rupture disc 2 and the contact on the upper rupture disc 1 during power failure.

The implementation principle of the embodiment is as follows: the fixing ring 6 of the lower safety disc 2 is arranged on the insulating ring frame 5, when the electric appliance works normally, the lower safety disc 2 is jacked up by the insulating jacking rod 3, and the contact on the horizontal part 82 is contacted with the contact of the upper safety disc 1; when the temperature of the electric appliance is abnormal, the fusible material 4 at the lower end of the insulating ejector rod 3 is melted to cause the insulating ejector rod 3 to descend, the lower safety disc 2 is reset under the action of self elastic restoring force, and the contact on the horizontal part 82 is far away from the contact of the upper safety disc 1.

Example 2:

referring to fig. 5, the present embodiment is different from embodiment 1 in that an upper rupture disc 1, which is connected to a lower rupture disc 2 in a matching manner and is electrically conductive, in a temperature controller safety device is configured as an elastic disc, the elastic disc is made of an elastic conductive material, the upper rupture disc 1 includes an electric connection part 11, a conductive part 12 and a fixing part 13 fixed to an insulating ring frame 5, and the electric connection part 11, the conductive part 12 and the fixing part 13 are integrally formed by the elastic conductive material; correspondingly, the lower safety disc 2 is integrally formed in an approximately "S" shape, a wrapping head for supporting the insulating ejector rod 3 is arranged between the free end plate 8 and the elastic bent arm 7, the position of the free end plate 8 is adjusted according to the position of the upper safety disc 1, and the free end plate 8 is arranged right below the upper safety disc 1 in this embodiment.

The implementation principle of the embodiment 2 is as follows: the fixing ring 6 of the lower safety disc 2 is arranged on the insulating ring frame 5, when the electric appliance works normally, the lower safety disc 2 is jacked up by the insulating mandril 3, and the contact on the free end plate 8 is contacted with the contact of the upper safety disc 1; when the temperature of the electric appliance is abnormal, the fusible material 4 at the lower end of the insulating ejector rod 3 is fused to cause the insulating ejector rod 3 to descend, the lower safety disc 2 is reset under the action of the self elastic restoring force, and the contact on the free end plate 8 is far away from the contact of the upper safety disc 1.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a temperature controller safeties, includes fusible material (4) of last rupture disc (1), lower rupture disc (2), insulating ejector pin (3) and insulating ejector pin (3) bottom, go up rupture disc (1) and lower rupture disc (2) and set up on insulating ring frame (5), the free end of lower rupture disc (2) forms a curved boom, the upper end top of insulating ejector pin (3) is held on the arm of this curved boom is on one's body, lower rupture disc (2) are including elasticity alloy layer (21) and conductive alloy layer (22), its characterized in that: the elastic alloy layer (21) and the conductive alloy layer (22) are compounded and integrally formed.

2. The thermostat safety of claim 1, wherein: the conductive alloy layer (22) is provided as an intermediate layer, and the elastic alloy layer (21) is provided on both sides in the thickness direction of the conductive alloy layer (22).

3. The thermostat safety of claim 1, wherein: lower rupture disc (2) are still including solid fixed ring (6), elasticity curved boom (7) and free end plate (8) that meet in proper order, gu fixed ring (6) cover is established and is fixed in on insulating ring frame (5), gu fixed ring (6) is connected integratively with elasticity curved boom (7) and free end plate (8) and is "C" shape setting, the junction to elasticity curved boom (7) and free end plate (8) is established on insulating ejector pin (3) upper end top, free end plate (8) are used for installing and go up the contact of rupture disc (1) electrical contact.

4. The thermostat safety of claim 3, wherein: and one end of the free end plate (8) far away from the elastic bent arm (7) is obliquely and downwards arranged towards the direction far away from the upper safety plate (1).

5. The thermostat safety of claim 3, wherein: the free end plate (8) comprises an inclined part (81) and a horizontal part (82), the upper end of the inclined part (81) is connected with the elastic bent arm (7), the lower end of the inclined part (81) is connected with the horizontal part (82), and the horizontal part (82) is used for installing a contact on the lower safety plate (2).

6. The thermostat safety of claim 3, wherein: the elastic bent arm (7) and the free end plate (8) are connected through a through hole (9), and the through hole (9) is used for penetrating and jacking the upper end of the insulating ejector rod (3).

7. The thermostat safety of claim 6, wherein: one side of the through hole (9) is provided with an annular attaching portion (10), the attaching portion (10) is arranged on one side, away from the insulating ejector rod (3), of the lower safety piece (2), and the outer surface of the upper end of the insulating ejector rod (3) is attached to the inner side of the attaching portion (10).

8. The thermostat safety of claim 7, wherein: the attaching part (10) is formed by punching a through hole (9) on the lower safety disc (2) by a punching device.