A terminal structure inside a temperature controller

Abstract

This utility model discloses a terminal structure within a temperature controller, including a stationary terminal and a moving terminal unit electrically connected to the stationary terminal. A heat conduction unit for improving the accuracy of heat detection is welded to the contact area between the stationary terminal and the moving terminal unit. The moving terminal unit includes a first moving terminal and a second moving terminal connected to each other. A bimetallic strip for temperature detection is electrically connected to the upper surface of the first moving terminal. This utility model has a reasonable structural design. By soldering silver at the contact point between the stationary and moving terminals, heat generated by resistance is avoided, improving the temperature detection accuracy of the bimetallic strip, increasing the efficiency of the electrical appliance, and extending the service life of the bimetallic strip.

Description

Technical Field

[0001] This utility model relates to the field of thermostats, and more particularly to a terminal structure within a thermostat. Background Technology

[0002] A thermostat uses pressure to actuate contacts, controlling electrical equipment to stop or start operating when a certain temperature is reached. Thermostats have a wide range of applications, including electric vehicle batteries, water heaters, microwave ovens, dryers, air conditioners, and aerospace equipment and instruments requiring temperature control or protection.

[0003] Existing thermostats typically contain a bimetallic strip, which deforms in both directions as the ambient temperature changes. This deformation causes the thermostat's heating circuit to either open or close, thus preventing the internal temperature from becoming too high due to current heating during operation and avoiding damage to the internal components.

[0004] The existing temperature controllers often use a riveted terminal structure, which causes an additional resistance heating when current passes through, resulting in inaccurate temperature detection by the bimetallic strip. Before the rated heating temperature is reached, the bimetallic strip deforms and pops open, breaking the circuit, leading to low electrical efficiency and shortening the lifespan of the bimetallic strip. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a terminal structure inside a temperature controller, based on the current state of the technology.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a terminal structure in a temperature controller, including a stationary terminal and a moving terminal unit that is electrically connected to the stationary terminal. A heat conduction unit for improving the accuracy of heat detection is welded to the contact part of the stationary terminal and the moving terminal unit. The moving terminal unit includes a first moving terminal and a second moving terminal that are connected to each other. A bimetallic strip for detecting temperature is electrically connected to the upper surface of the first moving terminal.

[0007] Preferably, the heat conduction unit includes a silver coating or a silver block.

[0008] Preferably, the first moving terminal is bent.

[0009] Preferably, the stationary terminal has a stationary contact protruding downward from its bottom surface, and the first moving terminal has a moving contact protruding upward from its top surface, with the stationary contact and the moving contact being electrically connected by contact.

[0010] Preferably, both the static and dynamic contacts have heat conduction units welded to their outer surfaces.

[0011] Preferably, the upper surface of the first moving terminal has at least two abutment points protruding upwards, and the lower surface of the bimetallic strip is electrically connected to the abutment points.

[0012] Preferably, the first moving terminal is U-shaped or V-shaped.

[0013] Compared with the prior art, the advantages of this utility model are: by soldering silver at the contact point of the stationary terminal and the moving terminal, the heat generated by the resistance is avoided, the temperature detection accuracy of the bimetallic strip is improved, the efficiency of the electrical appliance is improved, and the service life of the bimetallic strip is increased. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of this utility model;

[0016] Figure 3 This is an exploded structural diagram of the present invention.

[0017] Reference numerals: 1. Stationary terminal; 2. First moving terminal; 3. Second moving terminal; 4. Bimetallic strip; 5. Stationary contact; 6. Moving contact; 7. Abutment point. Detailed Implementation

[0018] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0019] It should be noted that all directional indicators in this utility model embodiment, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0020] Furthermore, in addition to indicating orientation or positional relationship, the aforementioned terms may also be used to indicate other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. For those skilled in the art, the specific meaning of these terms in this utility model can be understood according to the specific circumstances.

[0021] Furthermore, the terms "installation," "setting," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral structures; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two devices, components, or parts. The connection methods described herein are existing technologies without any modifications and are common knowledge to those skilled in the art. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model. Example 1

[0023] like Figures 1 to 3 As shown, this utility model provides a terminal structure inside a temperature controller, including a stationary terminal 1 and a moving terminal unit electrically connected to the stationary terminal 1. A heat conduction unit for improving the accuracy of heat detection is welded to the contact area between the stationary terminal 1 and the moving terminal unit. Specifically, the moving terminal unit includes a first moving terminal 2 and a second moving terminal 3 connected to each other. A bimetallic strip 4 for detecting temperature is electrically connected to the upper surface of the first moving terminal 2.

[0024] The heat conduction unit includes a silver coating or a silver block.

[0025] The first moving terminal 2 is bent, which is used to better fit the moving terminal unit with the lower surface of the stationary terminal 1, thereby improving the accuracy, flatness and rationality of heat detection.

[0026] The stationary terminal 1 has a stationary contact 5 protruding downward from the bottom surface, and the first moving terminal 2 has a moving contact 6 protruding upward from the top surface; specifically, the stationary contact 5 and the moving contact 6 are electrically connected by contact.

[0027] Both the stationary contact 5 and the moving contact 6 have heat conduction units welded to their outer surfaces. Specifically, both the stationary contact 5 and the moving contact 6 have a silver coating or silver block welded to their outer surfaces. The purpose of the silver coating or silver block is to prevent resistance heating caused by current flow when the stationary contact 5 and the moving contact 6 are riveted together, which would affect the accuracy of the temperature detection by the bimetallic strip 4. Other material components with the same function as silver can also be welded to the outer surfaces of the stationary contact 5 and the moving contact 6.

[0028] The upper surface of the first moving terminal 2 has at least two contact points 7 protruding upwards. The lower surface of the bimetallic strip 4 is electrically connected to the contact points 7. The contact points 7 are used to conduct the heat generated by the current to the bimetallic strip 4.

[0029] The working principle of this utility model is as follows: Under normal working conditions, the stationary contact 5 on the stationary terminal 1 and the moving contact 6 on the first moving terminal 2 are electrically connected by contact. The current passes through the stationary terminal 1, the first moving terminal 2, the bimetallic strip 4, and the second moving terminal 3 respectively. When the heat generated by the current rises to the rated temperature, specifically, the heat generated by the current is conducted to the bimetallic strip 4 through the contact point 7, causing the bimetallic strip 4 to deform. The center of the bimetallic strip 4 is concave downwards. The bimetallic strip 4 drives the first moving terminal 2 to concave downwards through the contact point 7 until the moving contact 6 on the first moving terminal 2 and the stationary contact 5 on the stationary terminal 1 are completely disconnected, the circuit is broken, and the internal components are protected.

[0030] Once the internal heat decreases, the bimetallic strip 4 returns to its original state, the moving contact 6 and the stationary contact 5 reconnect electrically, the circuit is reconnected, and the appliance starts working.

[0031] The advantages of this utility model are: by soldering silver at the contact point between the stationary terminal 1 and the moving terminal, the heat generated by the resistance is avoided, the temperature detection accuracy of the bimetallic strip 4 is improved, the efficiency of the electrical work is improved, and the service life of the bimetallic strip 4 is increased. Example 2

[0032] Unlike Embodiment 1, in this embodiment, the first moving terminal 2 is U-shaped or V-shaped, which is used to better fit the moving terminal unit with the lower surface of the stationary terminal 1, thereby improving the accuracy, flatness, and rationality of heat detection. Other structures are the same as in Embodiment 1.

[0033] In the description of this specification, references are made to the terms "one embodiment", "some embodiments", "example", "specific example".

[0034] The descriptions using terms such as "example" or "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0035] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, welding, and bonding that are mature in the existing technology, and will not be described in detail here.

[0036] The above description is only a preferred embodiment of this utility model. For those skilled in the art, various modifications and variations can be made in the specific implementation and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A terminal structure in a thermostat, characterized by: It includes a stationary terminal and a moving terminal unit that is electrically connected to the stationary terminal. A heat conduction unit for improving the accuracy of heat detection is welded to the contact area between the stationary terminal and the moving terminal unit. The moving terminal unit includes a first moving terminal and a second moving terminal that are connected to each other. A bimetallic strip for detecting temperature is electrically connected to the upper surface of the first moving terminal. The heat conduction unit includes a silver coating or a silver block; The first moving terminal is bent; The stationary terminal has a stationary contact protruding downward from its bottom surface, and the first moving terminal has a moving contact protruding upward from its top surface. The stationary contact and the moving contact are electrically connected by contact. Both the static and moving contacts have heat conduction units welded to their outer surfaces. The upper surface of the first moving terminal has at least two abutment points protruding upwards, and the lower surface of the bimetallic strip is electrically connected to the abutment points; The first moving terminal is U-shaped or V-shaped.

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