CN212990985U

CN212990985U - Temperature controller protection device

Info

Publication number: CN212990985U
Application number: CN202021663481.1U
Authority: CN
Inventors: 戎笑远; 戎征雷
Original assignee: Cixi City Kada Thermostat Co ltd
Current assignee: Cixi City Kada Thermostat Co ltd
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2021-04-16
Anticipated expiration: 2030-08-11

Abstract

The utility model relates to a temperature controller safety device, which comprises an upper safety sheet, a lower safety sheet and a fixing sheet fixed below an insulating ring frame, wherein a top rod is arranged between the lower safety sheet and the fixing sheet, the bottom of the top rod passes through the fixing sheet, a rod head with a dome is arranged at the top of the top rod, a round platform is arranged at the periphery of the middle section of the top rod and is positioned between the lower safety sheet and the fixing sheet, and the radius of the round platform is greater than that of the rod head; the lower safety sheet comprises a fixed part fixed on the insulating ring frame and an integral L-shaped conducting sheet connected with the fixed part, a concave surface matched with the rod head is arranged at the L-shaped folding point of the conducting sheet, a bulge is arranged in the concave surface, and a recess is arranged on the rod head corresponding to the bulge; one end of the conducting plate is connected with the fixing part, the other end of the conducting plate is provided with a contact, and the contact is attached to the upper safety plate. The utility model discloses a temperature controller protection device, the insurable piece under its ejector pin is difficult for the roll-off, and resistivity is low for precision and sensitivity are higher.

Description

Temperature controller protection device

Technical Field

The utility model relates to a temperature controller field especially relates to a temperature controller protection device.

Background

At present, a general temperature controller, especially a temperature controller applied to household electrical appliances such as an electric iron, has a safety device for safety, and when the working temperature of an electric heating workpiece of the household electrical appliance rises to a set temperature exceeding point, the safety device can prevent the equipment from continuously operating through a tripping function.

Generally, a containing groove is formed in an electric heating workpiece, and then a hot melt (a fusible material or an inverted cap-shaped receiving element) is placed in the containing groove to be padded with a high-insulation ejector rod, so that the insulation ejector rod can push against a lower safety disc, and the lower safety disc is bent upwards and attached to the upper safety disc; when the work of the electric heating workpiece is close to the over-limit temperature, the hot melt melts, the lower end of the ejector rod loses the limit, so that the ejector rod cannot upwards support the lower safety piece, the lower safety piece can be separated from the upper safety piece after being reset, and the tripping and power-off work is completed.

The lower safety sheet in the existing temperature controller protection device is mostly made of stainless steel, and the resistivity of the lower safety sheet is high, so that the precision and the sensitivity of the temperature controller safety device are reduced, and the temperature rise range of a product is large; meanwhile, the existing ejector rod is separated from the lower safety disc under some emergency situations, so that the product is invalid.

SUMMERY OF THE UTILITY MODEL

In order to overcome the shortcoming among the prior art, the utility model designs a temperature controller protection device, insurance piece under its ejector pin is difficult for the roll-off, and resistivity is low for precision and sensitivity are higher.

The utility model provides a temperature controller safety device, including the last safety plate and the lower safety plate that are fixed on the insulating ring frame of temperature controller and are connected with the adjusting device of temperature controller, still including fixing in the stationary blade of insulating ring frame below, be provided with the ejector pin between lower safety plate and the stationary blade, the bottom of ejector pin passes the stationary blade setting, the pole head that has the dome at ejector pin top, the periphery in the middle section of ejector pin still is provided with the round platform, the round platform is located lower safety plate with between the stationary blade, the radius of round platform is greater than the radius of pole head; the lower safety sheet comprises a fixing part fixed on the insulating ring frame and an integral L-shaped conducting sheet connected with the fixing part, a concave surface matched with the rod head is arranged at the L-shaped folding point of the conducting sheet, a bulge is arranged in the concave surface, and a recess is arranged on the rod head corresponding to the bulge; one end of the conducting plate is connected with the fixing part, the other end of the conducting plate is provided with a contact, and the contact is attached to the upper safety plate.

Preferably, the lower safety plate is made of a copper-nickel composite material.

Preferably, the lower safety plate is made of stainless steel, and a silver coating is arranged outside the stainless steel.

Compared with the prior art, the utility model provides a technical scheme has following advantage:

the utility model ensures that the ejector rod is not easy to slide out of the concave surface when the rod head is propped in the concave surface by matching the bulge and the recess which are arranged in the concave surface and correspondingly arranged on the rod head, thereby ensuring the normal work of the safety device;

simultaneously the utility model discloses lower insurance piece adopts copper-nickel combined material or silver-plated stainless steel to make, reduces resistivity for safeties precision and sensitivity are higher.

Drawings

FIG. 1 is a schematic structural view of a temperature controller safety device of the present invention;

FIG. 2 is a schematic structural view of the lower rupture disc of FIG. 1;

fig. 3 is a schematic structural view of the jack rod in fig. 1.

Reference numerals: 1-insulating ring frame, 2-adjusting device, 3-upper safety piece, 4-lower safety piece, 5-fixing piece, 6-ejector rod, 7-rod head, 8-round table, 9-fixing part, 10-conducting piece, 11-concave surface, 12-convex, 13-concave and 14-contact.

Detailed Description

The present invention will be further described with reference to the following specific embodiments, but the present invention is not limited to these specific embodiments. It will be recognized by those skilled in the art that the present invention encompasses all alternatives, modifications, and equivalents as may be included within the scope of the claims.

Example one

As shown in fig. 1-3, a temperature controller safety device is shown, which includes an upper safety plate 3 and a lower safety plate 4 fixed on an insulating ring frame 1 of a temperature controller and connected with a regulating device 2 of the temperature controller, and further includes a fixing plate 5 fixed below the insulating ring frame 1, a top rod 6 is arranged between the lower safety plate 4 and the fixing plate 5, the bottom of the top rod 6 passes through the fixing plate 5, a rod head 7 with a dome is arranged at the top of the top rod 6, a circular truncated cone 8 is further arranged at the periphery of the middle section of the top rod 6, the circular truncated cone 8 is positioned between the lower safety plate 4 and the fixing plate 5, and the radius of the circular truncated cone 8 is greater than that of the rod head 7; the lower safety plate 4 comprises a fixing part 9 fixed on the insulating ring frame 1 and an integral L-shaped conducting plate 10 connected with the fixing part 9, a concave surface 11 matched with the rod head 7 is arranged at the L-shaped folding point of the conducting plate 10, a bulge 12 is arranged in the concave surface 11, and a recess 13 is arranged on the rod head 7 corresponding to the bulge 12; one end of the conducting strip 10 is connected with the fixing part 9, the other end of the conducting strip is provided with a contact 14, and the contact 14 is attached to the upper safety plate 3.

In this embodiment, the lower fuse piece 4 is made of a copper-nickel composite material, a copper-nickel composite material and a copper-nickel alloy, and the resistivity of the copper-nickel alloy is lower than that of stainless steel of a conventional fuse piece, which is beneficial to improving the precision and sensitivity of the fuse device.

The working principle is as follows: the hot melt groove at electric heat work piece is installed to roof bottom with temperature controller safeties, then inserts the working circuit of electric heat work piece with the temperature controller, and when the work of electric heat work piece was close to the transfinite temperature, the hot melt in the hot melt groove melts, and 6 lower extremes of ejector pin lose the support for ejector pin 6 can't upwards push up the concave surface 11 of holding down insurance piece 4, and after insurance piece 4 resets down, contact 14 can separate with last insurance piece 3, thereby accomplishes tripping operation outage work.

In the structure, the arrangement of the circular truncated cone 8 enables the ejector rod 6 not to fall all the time after losing the support of the hot melt, namely, under the condition that the contact 14 is ensured to be separated from the upper safety plate 6 after falling to a certain distance, the contact area between the lower end of the ejector rod 6 and the melted hot melt can be reduced, and the ejector rod 6 can be detached more easily.

Example two

The difference between this embodiment and the first embodiment is that the lower rupture disc 4 of this embodiment is made of stainless steel and a silver plating layer is disposed outside the stainless steel. The silver coating is also provided to reduce the resistivity and improve the opening accuracy of the safety device.

It is to be understood by persons skilled in the art that the embodiments of the present invention described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The utility model discloses a function and structure principle can modify wantonly under the principle that does not deviate from above-mentioned show.

Claims

1. The utility model provides a temperature controller protection device, is including fixing last rupture disc (3) and lower rupture disc (4) on insulating ring frame (1) of temperature controller and be connected with adjusting device (2) of temperature controller, still including fixing stationary blade (5) of insulating ring frame (1) below, lower rupture disc (4) with be provided with ejector pin (6) between stationary blade (5), the bottom of ejector pin (6) is passed stationary blade (5) set up its characterized in that: the top of the ejector rod (6) is provided with a round head (7), the periphery of the middle section of the ejector rod (6) is also provided with a circular truncated cone (8), the circular truncated cone (8) is positioned between the lower safety sheet (4) and the fixing sheet (5), and the radius of the circular truncated cone (8) is larger than that of the head (7); the lower safety sheet (4) comprises a fixing part (9) fixed on the insulating ring frame (1) and an integral L-shaped conducting sheet (10) connected with the fixing part (9), a concave surface (11) matched with the rod head (7) is arranged at the L-shaped folding point of the conducting sheet (10), a protrusion (12) is arranged in the concave surface (11), and a recess (13) is arranged on the rod head (7) corresponding to the protrusion (12); one end of the conducting strip (10) is connected with the fixing part (9), the other end of the conducting strip is provided with a contact (14), and the contact (14) is attached to the upper safety plate (3).

2. The thermostat protection device of claim 1, wherein: the lower safety plate (4) is made of a copper-nickel composite material.

3. The thermostat protection device of claim 1, wherein: the lower safety plate (4) is made of stainless steel, and a silver coating is arranged outside the stainless steel.