Thread locking type temperature controller

Abstract

The utility model relates to a thread locking type temperature controller which comprises a shell, a moving contact support, a fixed contact support, a moving contact, a fixed contact, a guide frame, a disc, an action rod, a first conductive part, a second conductive part, a first wiring terminal, a second wiring terminal and a temperature sensing sealing cover. When the disc is heated to a customized temperature, the disc turns over and deforms, the action rod is pushed to slide along the guide frame, and then the moving contact support is driven to act, so that the moving contact is separated from the fixed contact, and the temperature control switch is switched off; after the temperature of the disc drops, the disc is reset, and the moving contact is in contact with the fixed contact again under the elastic force of the moving contact support, so that the temperature control switch is closed. The temperature sensing sealing cover is buckled on the upper portion of the shell in a covering mode, the top of the temperature sensing sealing cover is provided with an installation screw rod, and the temperature controller can be installed on a heating body in a threaded connection mode through the installation screw rod. The thread locking type temperature controller has the advantages of being compact in structure, convenient to install, accurate in temperature control and the like.

Description

Technical Field

[0001] The present application relates to the technical field of thermostats, and in particular to a thread locking thermostat. Background Art

[0002] A thermostat is a series of automatic control components that produce certain special effects and conduction or disconnection actions by physically deforming the switch according to the temperature changes in the working environment. It is also called a temperature control switch, temperature protector or temperature controller. The application range of thermostats is very wide. Different types of thermostats are used in many products such as home appliances, motors, refrigeration or heating.

[0003] The basic working principle of the thermostat is based on the sampling and real-time monitoring of the temperature sensor. When the ambient temperature is higher or lower than the set control value, the control circuit will start the corresponding action. Specifically, when the ambient temperature rises and exceeds the set value, the thrust generated by the expansion of the temperature sensing element will close the heat medium to reduce the output temperature; on the contrary, when the ambient temperature drops and is lower than the set value, the temperature sensing element contracts and the heat medium is opened under the action of the reset device to increase the output temperature. In this way, the thermostat can maintain the controlled temperature within the set temperature range.

[0004] Traditional thermostats have many inconveniences in the process of installation and use, such as complex installation methods, inaccurate temperature control, etc. Therefore, it is necessary to improve the thermostat to meet the needs of the market. Summary of the invention

[0005] The purpose of this application is to provide a threaded locking thermostat in view of the current status of the above-mentioned prior art, which has the characteristics of compact structure, convenient installation, precise temperature control, etc.

[0006] To achieve the above objectives, this application adopts the following technical solutions:

[0007] A threaded locking temperature controller, comprising: a shell, a moving contact bracket, a fixed contact bracket, a moving contact, a fixed contact, a guide frame, a disc, an action rod, a first conductive member, a second conductive member, a first terminal, a second terminal and a temperature-sensitive cover; wherein the interior of the shell forms an upwardly open accommodation space, the moving contact bracket, the fixed contact bracket and the guide frame are all arranged in the accommodation space, the first terminal and the second terminal are arranged outside the shell; the moving contact bracket is used to install the moving contact and the moving contact bracket is an elastic member, the fixed contact bracket is used to install the fixed contact and the fixed contact bracket is fixedly arranged, the first conductive member electrically connects the moving contact and the first terminal, the The second conductive member electrically connects the fixed contact and the second terminal; the guide frame is used to install the disc and guide the movement of the actuating rod; the actuating rod is slidably installed in the guide frame; the disc and the moving contact bracket are respectively arranged at two ends of the actuating rod; the disc is heated to a customized temperature and flips and deforms, pushing the actuating rod to slide along the guide frame, thereby driving the moving contact bracket to move, so that the moving contact is separated from the fixed contact, and the temperature control switch is disconnected; the disc is reset after the temperature drops, and the moving contact is re-contacted with the fixed contact under the elastic force of the moving contact bracket, so that the temperature control switch is closed; the temperature control switch is disconnected and closed by the flipping deformation of the disc, thereby improving the accuracy of temperature control;

[0008] The temperature sensing cover is buckled on the top of the housing, and a mounting screw is arranged on the top of the temperature sensing cover, through which the thermostat can be mounted on the heating element by threaded connection. By designing the mounting screw on the temperature sensing cover, the installation of the thermostat is more convenient.

[0009] Furthermore, the temperature sensing cover comprises a cover body and a packaging part, wherein the cover body is arranged above the disc, and the packaging part is arranged around the upper end of the shell. The temperature sensing cover plays a role of heat conduction and temperature sensing, and also plays a role of packaging the internal components of the thermostat.

[0010] Furthermore, a accommodating groove which is concave upward is provided on one side of the cover body facing the disc. The accommodating groove is provided to increase the deformation space of the disc so that the disc can be lifted upward and will not be stuck on the temperature-sensitive cover.

[0011] Furthermore, the guide frame includes a disc slot, the disc is placed in the disc slot, a deformation space for the disc is formed between the disc slot and the receiving slot, and the depth of the disc slot is less than the height of the disc. By the shallow design of the disc slot, the disc is closer to the temperature sensing cover, thereby improving the temperature sensitivity and accuracy.

[0012] Furthermore, when the thermostat is placed upright, the minimum gap between the disc and the cover is less than 0.1 mm, thereby ensuring that the disc can stably and quickly transfer heat to the temperature-sensitive cover when the thermostat is installed in any direction.

[0013] Furthermore, the movable contact support includes a first mounting frame and a second mounting frame, the second mounting frame is fixedly arranged in the accommodating space, the first conductive member electrically connects the second mounting frame and the first terminal; the first mounting frame is arranged above the first mounting frame, one end of the first mounting frame is fixedly connected to the second mounting frame, and the other end is a movable end, and the movable contact is installed on the movable end. Through the above arrangement, the movable end of the first mounting frame has an elastic deformation function, and the movable contact can move up and down to achieve contact or separation with the fixed contact.

[0014] Furthermore, the first conductive part includes a first rivet, and the second mounting frame is provided with a first conductive part mounting hole for the first rivet to pass through, and the first rivet passes through the first conductive part mounting hole and the shell in sequence to connect the first terminal; a bracket pressure plate is provided between the first rivet and the second mounting frame, and the bracket pressure plate is used to increase the force area between the first rivet and the second mounting frame to avoid poor contact between the moving contact bracket and the first conductive part due to repeated deformation, thereby affecting the output of the temperature control signal.

[0015] Furthermore, the side of the second mounting frame close to the inner wall of the housing is designed to conform to the inner wall of the housing. Through the above arrangement, it is convenient to position and install the moving contact bracket.

[0016] Furthermore, a first mounting plane and a second mounting plane are set in the accommodating space, the second mounting plane is higher than the first mounting plane, the second mounting frame is higher than the first mounting plane, the fixed contact bracket is arranged on the second mounting plane, and the first mounting frame is arranged between the first mounting plane and the second mounting plane.

[0017] Furthermore, the fixed contact bracket is a thin plate, and the side of the fixed contact bracket close to the inner side wall of the housing is designed to follow the inner side wall of the housing. Through the above arrangement, it is convenient to position and install the fixed contact bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 According to some embodiments of the present application, a cross-sectional view of the thread locking thermostat is shown;

[0019] Figure 2 According to some embodiments of the present application, a structural schematic diagram of the thread locking thermostat in a closed state of the temperature control switch is shown;

[0020] Figure 3 According to some embodiments of the present application, a structural schematic diagram of the thread locking thermostat in a state where the temperature control switch is disconnected is shown;

[0021] Figure 4 According to some embodiments of the present application, a schematic structural diagram of a housing is shown;

[0022] Figure 5 According to some embodiments of the present application, a schematic structural diagram of a moving contact support is shown;

[0023] Figure 6 According to some embodiments of the present application, a schematic structural diagram of a fixed contact bracket is shown;

[0024] Figure 7 According to some embodiments of the present application, a schematic diagram of the cooperation between the moving contact bracket, the fixed contact bracket and the housing is shown;

[0025] Figure 8 According to some embodiments of the present application, a schematic diagram of the structure of a temperature-sensitive cover is shown;

[0026] Fig. 9 According to some embodiments of the present application, it is shown Figure 2 A partial enlarged view of part A;

[0027] Fig.10 According to some embodiments of the present application, a schematic structural diagram of a guide frame is shown. DETAILED DESCRIPTION

[0028] The following is a more detailed description of the technical features and advantages of the present application in conjunction with the accompanying drawings, so that the advantages and features of the present application can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0029] It should be noted that, in the description of the present application, terms such as "up", "down", "left", "right", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0030] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the importance of the technical features shown.

[0031] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] See also Figure 1-Figure 10 , which is a structural schematic diagram of a threaded locking thermostat provided in an embodiment of the present application, comprising: a housing 1, a moving contact bracket 2, a moving contact 3, a fixed contact 4, a temperature sensing cover 5, a guide frame 6, a disc 7, an action rod 8, a fixed contact bracket 9, a first conductive member 13, a second conductive member 10, a first terminal 11 and a second terminal 12. Among them, the housing 1, the guide frame 6 and the action rod 8 are insulating members, which can be made of insulating materials; the moving contact bracket 2, the moving contact 3, the fixed contact 4, the fixed contact bracket 9, the first conductive member 13, the second conductive member 10, the first terminal 11 and the second terminal 12 are conductive members, which can be made of conductive metal materials.

[0033] See also Figure 4 The housing 1 is an insulating support of the temperature controller. The housing 1 forms an upwardly open accommodation space 101. The accommodation space 101 is provided with a first mounting plane 102 for mounting the moving contact support 2 and a second mounting plane 104 for mounting the fixed contact support 9. The second mounting plane 104 is higher than the first mounting plane 102, so that the fixed contact 4 is arranged directly above the moving contact 3 in the accommodation space 101. The first mounting plane 102 is provided with a first mounting hole 103 that runs through the inside and outside of the housing 1. The first mounting hole 103 is used to arrange the first conductive member 13. The first conductive member 13 passes through the first mounting hole 103 on the housing 1 and extends out of the housing 1 to connect to the first terminal 11. The second mounting plane 104 is provided with a second mounting hole 105 that runs through the inside and outside of the housing 1. The second mounting hole 105 is used to arrange the second conductive member 10. The second conductive member 10 passes through the second mounting hole 105 and extends out of the housing 1 to connect to the second terminal 12. In this embodiment, the housing 1 can be made of insulating PT-310 material.

[0034] See also Figure 5The moving contact bracket 2 is used to install the moving contact 3 and the first conductive member 13, and realize the electrical connection between the moving contact 3 and the first conductive member 13. Specifically, the moving contact bracket 2 includes a first mounting frame 201 and a second mounting frame 202. The first mounting frame 201 is provided with a moving contact mounting hole 203, and the moving contact 3 can be installed in the above-mentioned moving contact mounting hole 203 by riveting; a trigger point 205 can also be protruded on the first mounting frame 201, and the trigger point 205 is used to contact the lower end of the action rod 8; the second mounting frame 202 is provided with a first conductive member mounting hole 204, and the first conductive member 13 sequentially passes through the above-mentioned first conductive member mounting hole 204 and the first mounting hole 103 and extends out of the housing 1, and the above-mentioned second mounting frame 202 is fixedly arranged on the first mounting plane 102, and the first mounting frame 201 is arranged above the second mounting frame 202 and below the second mounting plane 104, so that the moving contact 3 is just located below the fixed contact 4. One end of the first mounting frame 201 is connected to the second mounting frame 202 and is a fixed end, and the other end is a movable end. The movable end of the first mounting frame 201 can move up and down relative to its fixed end to achieve elastic deformation. The moving contact 3 is arranged on the movable end of the first mounting frame 201. Under the elastic deformation of the first mounting frame 201, the moving contact 3 can move up and down to contact or separate from the fixed contact 4, thereby realizing the closing or disconnection of the temperature control switch. Preferably, the first conductive member 13 may include a first rivet, and the first rivet passes through the second mounting frame 202 and the shell 1 to achieve electrical connection between the inside and the outside of the temperature controller. A bracket pressure plate 14 may also be provided between the second mounting frame 202 and the first rivet. The bracket pressure plate 14 is made of conductive material, such as H65T, and is used to increase the force-bearing area of ​​the second mounting frame 202 to prevent the first rivet and the second mounting frame 202 from having poor contact during repeated deformation of the first mounting frame 201, thereby affecting the output of the temperature control signal. Please refer to Figure 5 and Figure 7 In order to facilitate the positioning and installation of the moving contact bracket 2, the first side surface 206 of the second mounting frame 202 close to the inner wall of the shell 1 can be designed to follow the inner wall of the shell 1. In this embodiment, the inner side surface of the shell 1 is a cylinder, and the above-mentioned first side surface 206 is set to a corresponding arc surface. When the moving contact bracket 2 is installed, the first side surface 206 just matches with the side wall of the shell 1.

[0035] The moving contact 3 and the fixed contact 4 are electrical elements for realizing the closing / opening of the thermostat switch, and can be made of a composite material of AgNi10 and Cu to enhance the conductivity.

[0036] See also Figure 6The fixed contact bracket 9 is fixedly arranged on the second mounting plane 104, and is used to mount the fixed contact 4 and the second conductive member 10, and realize the electrical connection between the fixed contact 4 and the second conductive member 10. The fixed contact mounting bracket 10 is provided with a second conductive member mounting hole 902 and a fixed contact mounting hole 901. The fixed contact 4 can be fixed in the fixed contact mounting hole 901 by riveting, and the second conductive member 10 sequentially passes through the second conductive member mounting hole 902 and the second mounting hole 105 and extends out of the housing 1 to connect the second terminal 12. Please refer to Figure 6-Figure 7 In order to facilitate the installation and positioning of the fixed contact bracket 9, the second side surface 903 of the fixed contact bracket 9 close to the inner wall of the shell 1 can be designed to follow the inner wall of the shell 1. In this embodiment, the above-mentioned second side surface 903 is an arc surface. When the fixed contact bracket 9 is installed, the second side surface 903 just matches with the side wall of the shell 1.

[0037] The guide frame 6 is fixedly mounted on the upper end of the housing 1, and is used to mount the disc 7 and guide the movement of the actuating rod 8. Specifically, a guide hole 601 is provided through the center of the guide frame 6, and the actuating rod 8 is slidably mounted in the guide hole 601, and can reciprocate up and down along the guide hole 601. A disc groove 602 is provided above the guide hole 601, and the disc 7 is arranged in the disc groove 602; the disc 7 and the first mounting frame 201 of the moving contact bracket 2 are respectively arranged at the two ends of the actuating rod 9, and the disc 7 is an upwardly convex arc surface in the non-heated state (please refer to Figure 2 ), the moving contact 3 contacts the fixed contact 4 under the elastic force of the first mounting frame 201, so that the temperature control switch is closed; when the disc 7 is heated to the customized temperature, it quickly moves downward and turns into a concave arc surface (see Figure 3 ), the bottom of the disc 7 pushes the action rod 8 to slide downward along the guide hole 601, and the lower end of the action rod 8 pushes the first mounting frame 201 downward by abutting against the triggering point 205, so that the moving contact 3 is separated from the fixed contact 4, and the temperature control switch is disconnected. Preferably, the disc groove 602 is shallowly designed, that is, the groove depth of the disc groove 602 is smaller than the height of the disc 7. Through the shallow design, the disc 6 can be closer to the temperature sensing cover 5, thereby improving the temperature sensitivity.

[0038] The temperature sensing cover 5 is arranged above the disc 7 and covers the upper end of the housing 1. On the one hand, it plays a role in heat conduction; on the other hand, it is used to achieve the packaging of the accommodation space 101. For details, please refer to Figure 8The temperature-sensing cover 5 of this embodiment includes a cover body 501 and a packaging portion 502. The cover body 501 is arranged above the disc 7, and a deformation space for the disc 7 is formed between the cover body 501 and the disc groove 602; the packaging portion 502 is used to connect the shell 1, and the packaging portion 502 is arranged around the upper end of the shell 1 to achieve the packaging of the accommodating space 101. Furthermore, this embodiment designs a mounting screw 503 on the top of the cover body 501, and the thermostat and the heating element can be threadedly locked by the mounting screw 503, so that the installation of the thermostat is more convenient. Preferably, an upwardly concave accommodating groove 504 is provided on the side of the cover body 501 facing the disc 7, and the accommodating groove 504 is used to increase the deformation space of the disc 7, so that the disc 7 can be lifted upward and will not be stuck on the temperature-sensing cover 5. Furthermore, when the thermostat is placed upright (i.e., arranged with the temperature-sensing surface facing upward), the minimum distance d between the disc 7 and the temperature-sensing cover 5 is less than 0.1 mm, ensuring that the disc 7 can stably and quickly transfer heat to the temperature-sensing cover 5 when the thermostat is installed in any direction. To achieve rapid temperature sensing, in this embodiment, the temperature-sensing cover 5 can be made of LF2-M aluminum-magnesium alloy material.

[0039] The specific implementation methods of this application are as follows:

[0040] First, the moving contact 3 is installed on the moving contact bracket 2, and the fixed contact 4 is installed on the fixed contact bracket 9. Then, the moving contact bracket 2 and the fixed contact bracket 9 are positioned and installed inside the housing 1 through the first side 206 and the second side 903 respectively, and then the first conductive member 13 and the second conductive member 10 are respectively passed through the moving contact bracket 2 and the moving contact bracket 9, and connected with the first terminal 11 and the second terminal 12; then, the guide frame 6, the action rod 8, the disc 7 and other components are installed in the housing 1 in sequence to form the main structure of the thermostat. Next, the temperature sensing cover 5 is buckled on the top of the housing 1, and the packaging part 502 is clamped to realize the packaging of the thermostat.

[0041] In actual use, when the temperature of the heating element reaches the preset temperature of the temperature control, the disc 7 is deformed and flipped, pushing the action rod 8 to slide downward in the guide frame 6, pushing open the moving contact 3, cutting off the circuit, disconnecting the temperature control switch, and stopping heating. When the temperature of the heating element drops, the disc 7 recovers its deformation and resets, and the moving contact 3 moves upward under the elastic force of the first mounting frame 201, re-contacts with the fixed contact 4, closes the temperature control switch, and the heating element starts heating again. The repeated deformation and reset of the disc 7 ensures the precise control of the temperature of the heating element.

[0042] In the description of this specification, the description with reference to the terms "some embodiments", "some examples", "exemplarily", "example", "preferably", or "further" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0043] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A thread locking thermostat, characterized in that: include: A shell, a moving contact bracket, a fixed contact bracket, a moving contact, a fixed contact, a guide frame, a disc, an actuating rod, a first conductive member, a second conductive member, a first terminal, a second terminal and a temperature-sensitive cover; wherein, the interior of the shell forms an upwardly open accommodation space, the moving contact bracket, the fixed contact bracket and the guide frame are all arranged in the accommodation space, the first terminal and the second terminal are arranged outside the shell; the moving contact bracket is used to install the moving contact and the moving contact bracket is an elastic member, the fixed contact bracket is used to install the fixed contact and the fixed contact bracket is fixedly arranged, the first conductive member electrically connects the moving contact with the The first wiring terminal, the second conductive member electrically connects the fixed contact and the second wiring terminal, the guide frame is used to install the disc and guide the movement of the actuating rod, the actuating rod is slidably installed in the guide frame, the disc and the moving contact bracket are respectively arranged at two ends of the actuating rod, the disc is heated to a customized temperature and flips and deforms, pushing the actuating rod to slide along the guide frame, thereby driving the moving contact bracket to move, so that the moving contact is separated from the fixed contact, and the temperature control switch is disconnected; the disc resets after the temperature drops, and the moving contact contacts the fixed contact again under the elastic force of the moving contact bracket, so that the temperature control switch is closed; The temperature-sensing cover is buckled on the top of the shell, and a mounting screw is arranged on the top of the temperature-sensing cover, through which the temperature controller can be mounted on the heating element in a threaded connection manner.

2. The thread locking thermostat according to claim 1, characterized in that: The temperature-sensitive cover comprises a cover body and a packaging portion, wherein the cover body is arranged above the disc, and the packaging portion is surrounded by the upper end portion of the shell.

3. The thread locking thermostat according to claim 2, characterized in that: A receiving groove which is concave upwards is arranged on one side of the cover body facing the disc.

4. The thread locking thermostat according to claim 3, characterized in that: The guide frame comprises a disc groove, the disc is arranged in the disc groove, a deformation space of the disc is formed between the disc groove and the accommodating groove, and the depth of the disc groove is less than the height of the disc.

5. The thread locking thermostat according to claim 2, characterized in that: When the thermostat is placed upright, the minimum gap between the disc and the cover is less than 0.1 mm.

6. The thread locking thermostat according to claim 1, characterized in that: The moving contact bracket includes a first mounting frame and a second mounting frame, the second mounting frame is fixedly arranged in the accommodating space, and the first conductive member electrically connects the second mounting frame and the first terminal; the first mounting frame is arranged above the first mounting frame, one end of the first mounting frame is fixedly connected to the second mounting frame, and the other end is a movable end, and the moving contact is installed at the movable end.

7. The thread locking thermostat according to claim 6, characterized in that: The first conductive member includes a first rivet, and the second mounting frame is provided with a first conductive member mounting hole for the first rivet to pass through, and the first rivet passes through the first conductive member mounting hole and the shell in sequence to connect the first terminal; a bracket pressure plate is provided between the first rivet and the second mounting frame, and the bracket pressure plate is used to increase the force-bearing area between the first rivet and the second mounting frame.

8. The thread locking thermostat according to claim 7, characterized in that: A side of the second mounting frame close to the inner wall of the shell is designed to conform to the inner wall of the shell.

9. The thread locking thermostat according to claim 6, characterized in that: A first mounting plane and a second mounting plane are arranged in the accommodating space, the second mounting plane is higher than the first mounting plane, the second mounting frame is higher than the first mounting plane, the fixed contact bracket is arranged on the second mounting plane, and the first mounting frame is arranged between the first mounting plane and the second mounting plane.

10. The thread locking thermostat according to claim 9, characterized in that: The fixed contact support is a thin plate, and the side of the fixed contact support close to the inner side wall of the shell is designed to follow the inner side wall of the shell.

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