A temperature controller for a central air conditioning system

Abstract

The application belongs to the technical field of switch control, and specifically discloses a temperature controller for central air conditioning, which comprises a display shell, a display assembly and a first circuit board arranged in the display shell, a first clamping hole arranged through the sidewall of the display shell, an elastic pressing frame arranged on the sidewall of the display shell in sliding mode corresponding to the first clamping hole, a pressing head in the elastic pressing frame extending into the first clamping hole from the outside of the display shell, a middle shell, a first buckle arranged on the middle shell and clamped with the first clamping hole, and a wiring shell arranged on the side of the middle shell away from the display shell in clamping mode. When disassembly is needed, no additional tool is needed, and the pressing head of the elastic pressing frame only needs to be pressed to force the first buckle to deform and disengage from the first clamping hole, so that the disassembly process is greatly simplified and the maintenance operation in temporary or emergency situations is facilitated.

Description

Technical Field

[0001] This application relates to the field of control switch technology, and in particular to a temperature controller for central air conditioning. Background Technology

[0002] Central air conditioning thermostats (also known as fan coil unit thermostats) are core devices used to control the fan coil units at the terminal of air conditioning systems. They are mainly used in heating, cooling, and ventilation systems in commercial, industrial, and residential buildings. This equipment maintains a constant indoor temperature by adjusting fan speed and temperature, and supports control of various devices such as electric valves, solenoid valves, and air dampers.

[0003] Current thermostats typically consist of several housings, which are usually connected by a snap-fit ​​mechanism. The protruding snaps, after elastic deformation, engage with the slot from one side. When removal is needed, a tool is used to press down from the other side of the slot to re-elastically deform the snaps and separate them. Since additional tools are required each time, some sudden or temporary disassembly and repairs require finding the tools on the spot, which is quite inconvenient. Utility Model Content

[0004] The purpose of this application is to provide a temperature controller for central air conditioning in order to solve the above-mentioned problems.

[0005] To achieve the above objectives, the technical solution of this application is as follows: A temperature controller for central air conditioning, comprising: The display housing has a display component and a first circuit board inside. A first snap-fit ​​hole is provided through the side wall of the display housing. An elastic pressing bracket is slidably provided on the side wall of the display housing corresponding to the first snap-fit ​​hole. The pressing head in the elastic pressing bracket extends from the outside of the display housing into the first snap-fit ​​hole. The intermediate shell is provided with a first buckle that engages with the first snap-fit ​​hole; The wiring housing is snap-fitted onto the side of the intermediate housing facing away from the display housing.

[0006] Preferably, the display housing has a snap-fit ​​protrusion on one side wall opposite to the side wall where the first snap-fit ​​hole is located, and the intermediate housing has a corresponding snap-fit ​​groove.

[0007] Preferably, the side wall of the first snap-fit ​​hole is provided with two sliding holes corresponding to the first snap-fit ​​hole. The elastic pressing frame also includes a pressing plate, a sliding post, a stop handle, and a spring. The sliding post is slidably disposed in the sliding holes. The pressing head is disposed on the pressing plate. The pressing plate is located outside the display shell. The stop handle is disposed on the end of the sliding post located inside the display shell. The spring is sleeved on the sliding post and located inside the display shell.

[0008] Preferably, a connecting arm extends from the middle shell toward the display shell, and the snap-fit ​​groove is disposed through the connecting arm.

[0009] Preferably, the wiring housing is provided with a second circuit board, the second circuit board is provided with a female connector, the first circuit board is provided with a male connector, and the intermediate housing is provided with a clearance notch for the male connector to connect with the female connector.

[0010] Preferably, a second buckle and a third buckle are respectively provided on a set of opposing sidewalls on the wiring housing, a second snap-fit ​​hole is provided on the intermediate housing, the second buckle engages with the second snap-fit ​​hole, and the third buckle engages with the edge of the clearance notch.

[0011] Preferably, the edge of the intermediate shell is provided with heat dissipation holes.

[0012] Preferably, the intermediate shell is provided with a strip-shaped connecting hole, and a limiting ring is provided on the side of the intermediate shell facing the display shell corresponding to the strip-shaped connecting hole, and the wiring shell is provided with a clearance portion; The strip-shaped connecting hole is used for the connecting bolt to pass through and be threaded into the wire groove on the wall, and the clearance part is used to allow the connecting bolt to pass.

[0013] Preferably, there are two strip-shaped connecting holes, which are located on both sides of the clearance notch; one of the strip-shaped connecting holes is vertically oriented along its length, and the other is horizontally oriented; the limiting ring is provided with a semi-circular notch.

[0014] Preferably, the wiring housing is provided with wiring terminals, which are electrically connected to the second circuit board.

[0015] The temperature controller for central air conditioning disclosed in this application can be disassembled without the need for additional tools. Simply pressing the pressing head of the elastic pressing bracket can force the first buckle to deform and disengage from the first snap-fit ​​hole, which greatly simplifies the disassembly process and facilitates maintenance operations in temporary or emergency situations. Attached Figure Description

[0016] Figure 1 This is an exploded view of the overall structure of this application; Figure 2 This is another exploded view of the overall structure of this application; Figure 3 This is a schematic diagram of the shell structure shown in this application; Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle; Figure 5 for Figure 3Enlarged view of a portion of point B in the middle; Figure 6 This is a schematic diagram of the intermediate shell structure in this application; Figure 7 for Figure 6 Enlarged view of a portion of point C in the middle; Figure 8 for Figure 6 A magnified view of a portion of point D in the middle.

[0017] In the picture: 1. Display housing; 10. First circuit board; 100. Pin header; 11. Display assembly; 12. Sliding hole; 13. Snap-fit ​​protrusion; 2. Intermediate housing; 20. First snap-fit; 21. Clearance notch; 22. Connecting arm; 220. Snap-fit ​​groove; 23. Strip-shaped connecting hole; 230. Limiting ring; 231. Semi-circular notch; 24. Heat dissipation hole; 26. Second snap-fit ​​hole; 3. Wiring housing; 30. Second circuit board; 31. Second snap-fit; 32. Clearance part; 33. Third snap-fit; 34. Wiring terminal; 40. Press plate; 41. Press head; 42. Sliding column; 43. Stop handle; 44. Spring. Detailed Implementation

[0018] The present application will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams, illustrating only the basic structure of the present application, and therefore only show the components relevant to the present application.

[0019] like Figure 1-8 As shown, a temperature controller for a central air conditioning system includes: Display housing 1, the interior of display housing 1 is provided with display component 11 and first circuit board 10, a first snap-fit ​​hole is provided through the side wall of display housing 1, and an elastic pressing frame is slidably provided on the side wall of display housing 1 corresponding to the first snap-fit ​​hole, the pressing head 41 in the elastic pressing frame extends into the first snap-fit ​​hole from the outside of display housing 1; intermediate housing 2, the intermediate housing 2 is provided with a first buckle 20 that snaps into the first snap-fit ​​hole; wiring housing 3, snap-fit ​​is provided on the side of intermediate housing 2 facing away from display housing 1.

[0020] The temperature controller for central air conditioning mainly consists of a display housing 1, an intermediate housing 2, and a wiring housing 3.

[0021] The display housing 1 contains a display component 11 and a first circuit board 10. The display component 11 is used to display information such as temperature and wind speed, and can also be used to adjust the temperature and wind speed by touch. The first circuit board 10 is responsible for processing relevant control signals.

[0022] A first snap-fit ​​hole is provided through the side wall of the display housing 1. Corresponding to the position of the first snap-fit ​​hole, an elastic pressing bracket is slidably arranged on the side wall of the display housing 1. The pressing head 41 of the elastic pressing bracket extends from the outside of the display housing 1 into the first snap-fit ​​hole. The intermediate housing 2 is provided with a first buckle 20 that matches the first snap-fit ​​hole. During assembly, the first buckle 20 can be directly snapped into the first snap-fit ​​hole to achieve the snap-fit ​​fixation of the display housing 1 and the intermediate housing 2. When disassembly is required, no additional tools are needed. Simply press the pressing head 41 of the elastic pressing bracket to force the first buckle 20 to deform and disengage from the first snap-fit ​​hole, which greatly simplifies the disassembly process and facilitates maintenance operations in temporary or emergency situations.

[0023] The wiring housing 3 is snapped onto the side of the middle housing 2 opposite to the display housing 1, forming an integral structure. The modular design of each housing facilitates the installation and maintenance of internal components.

[0024] In some further embodiments, a snap-fit ​​protrusion 13 is provided on one side wall of the display shell 1 opposite to the side wall where the first snap-fit ​​hole is provided, and a corresponding snap-fit ​​groove 220 is provided on the intermediate shell 2.

[0025] When the display shell 1 and the intermediate shell 2 are assembled, the snap-fit ​​protrusion 13 will be embedded in the snap-fit ​​groove 220, forming a two-way snap-fit ​​structure with the first snap-fit ​​hole and the first snap-fit ​​20. This avoids the loosening or misalignment that may be caused by snap-fit ​​on only one side, significantly improving the stability of the connection between the display shell 1 and the intermediate shell 2, and ensuring that the overall structure is not prone to shaking during use.

[0026] In some further embodiments, two sliding holes 12 are provided on the side wall corresponding to the first snap-fit ​​hole. The elastic pressing frame also includes a pressing plate 40, a sliding post 42, a stop handle 43, and a spring 44. The sliding post 42 is slidably disposed in the sliding hole 12. The pressing head 41 is disposed on the pressing plate 40, which is located outside the display shell 1. The stop handle 43 is disposed on the end of the sliding post 42 located inside the display shell 1. The spring 44 is sleeved on the sliding post 42 and located inside the display shell 1.

[0027] The sliding post 42 is slidably installed in the sliding hole 12. The pressing head 41 is set on the pressing plate 40, which is located outside the display shell 1 for easy user operation. The stop handle 43 is set at the end of the sliding post 42 inside the display shell 1. The spring 44 is sleeved on the sliding post 42 and is located inside the display shell 1. The two ends of the spring 44 abut against the inner side wall of the display shell 1 and the stop handle 43, respectively. When the pressing plate 40 is pressed, the sliding post 42 will drive the pressing head 41 to move into the display shell 1. The pressing head 41 squeezes the first buckle 20 to deform and disengage from the first snap hole. After the pressing plate 40 is released, the elastic force of the spring 44 will push the stop handle 43, causing the sliding post 42 and the pressing plate 40 to move towards the interior of the intermediate shell 2, so as to prevent the pressing plate 40 located outside the intermediate shell 2 from being in a loose state.

[0028] In some further embodiments, a connecting arm 22 extends on the side of the intermediate shell 2 toward the display shell 1, and a snap-fit ​​groove 220 is disposed through the connecting arm 22.

[0029] Under the action of the connecting arm 22, the snap-fit ​​groove 220 can undergo elastic deformation, so that it can undergo slight deformation during assembly, which makes it easy for the snap-fit ​​protrusion 13 to smoothly enter the snap-fit ​​groove 220, which not only improves the connection strength, but also simplifies the assembly process.

[0030] In some further embodiments, the wiring housing 3 is provided with a second circuit board 30, the second circuit board 30 is provided with a female connector, the first circuit board 10 is provided with a male connector 100, and the intermediate housing 2 is provided with a clearance notch 21 for the male connector 100 to connect with the female connector.

[0031] When the display housing 1 and the intermediate housing 2 are snapped together, the pin header 100 inserts into the socket through the clearance notch 21, achieving electrical connection between the first circuit board 10 and the second circuit board 30. This design eliminates the need for additional wire connections, achieving circuit conduction through direct docking of the pin header 100 and the socket. This not only simplifies the assembly process but also reduces potential contact problems caused by wire connections, improving the reliability of the circuit connection.

[0032] In some further embodiments, a second latch 31 and a third latch 33 are respectively provided on a set of opposing sidewalls on the wiring housing 3, and a second latching hole 26 is provided on the intermediate housing 2. The second latch 31 is engaged with the second latching hole 26, and the third latch 33 is engaged with the edge of the clearance notch 21.

[0033] When the wiring housing 3 is assembled with the intermediate housing 2, the second snap 31 snaps into the second snap hole 26, and the third snap 33 snaps into the edge of the clearance notch 21, forming a symmetrical snap structure on both sides. This prevents the wiring housing 3 from shifting to one side or falling off during use, ensuring a stable connection between the wiring housing 3 and the intermediate housing 2. At the same time, it makes full use of the existing clearance notch 21 structure on the intermediate housing 2, making the overall design more compact and saving space.

[0034] In some further embodiments, the edge of the intermediate shell 2 is provided with heat dissipation holes 24.

[0035] When the temperature controller is working, the electronic components on the first circuit board 10 and the second circuit board 30 generate heat. The heat dissipation holes 24 promote air circulation inside and outside the housing, dissipating the heat to the external environment in a timely manner. This helps to prevent the internal temperature of the housing from becoming too high, which could affect the performance and lifespan of the electronic components, and ensures the long-term stable operation of the temperature controller.

[0036] In some further embodiments, the intermediate shell 2 is provided with a strip-shaped connecting hole 23, and the side of the intermediate shell 2 facing the display shell 1 is provided with a limiting ring 230 corresponding to the strip-shaped connecting hole 23, and the wiring shell 3 is provided with a clearance portion 32.

[0037] The strip-shaped connecting hole 23 is used for the connecting bolt to pass through and threaded into the wire groove on the wall, and the clearance part 32 is used to allow the connecting bolt to pass.

[0038] The strip-shaped connecting hole 23 allows the connecting bolt to pass through for threaded connection with the wiring groove on the wall, thus achieving fixed installation of the temperature controller. The limiting ring 230 can limit the head of the connecting bolt to prevent it from loosening or falling off. The clearance part 32 provides clearance space for the connecting bolt, avoiding interference between the wiring housing 3 and the bolt during installation, ensuring that the wiring housing 3 can be smoothly snapped into the intermediate housing 2. The design of the strip-shaped connecting hole 23 allows for fine adjustment of the bolt installation position according to the actual position of the wiring groove on the wall during installation, improving the flexibility and adaptability of installation.

[0039] In some further embodiments, there are two strip-shaped connecting holes 23, which are located on both sides of the clearance notch 21; one strip-shaped connecting hole 23 is vertically arranged in the strip length direction, and the other is horizontally arranged; the limiting ring 230 is provided with a semi-annular notch 231.

[0040] The vertical strip-shaped connecting hole 23 can accommodate vertical deviations in the installation position, and the horizontal strip-shaped connecting hole 23 can accommodate horizontal deviations. The combination of the two greatly improves the positional error tolerance during installation, making it easier for installers to quickly find the correct installation position.

[0041] The semi-annular notch 231 on the limiting ring 230 makes the limiting ring 230 have a certain gap, which facilitates the removal of the connecting bolt and avoids the head of the connecting bolt being completely inside the limiting ring 230 and making it inconvenient to remove.

[0042] In some further embodiments, the wiring housing 3 is provided with wiring terminals 34, which are electrically connected to the second circuit board 30.

[0043] Terminal blocks are used to connect wires from external central air conditioning systems, such as control lines for fan coil units, electric valves, and other equipment. Through the electrical connection between terminal blocks 34 and the second circuit board 30, the control circuit of the external equipment is connected to the temperature controller. Terminal blocks 34 adopt a standardized structure, facilitating wire insertion, removal, and securing, reducing the possibility of wiring errors, and also simplifying future wiring maintenance and repair.

[0044] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this application.

Claims

1. A temperature controller for central air conditioning, characterized in that, include: Display housing (1), the interior of which is provided with display component (11) and first circuit board (10), a first snap-fit ​​hole is provided through the side wall of the display housing (1), and an elastic pressing bracket is slidably provided on the side wall of the display housing (1) corresponding to the first snap-fit ​​hole, and the pressing head (41) in the elastic pressing bracket extends from the outside of the display housing (1) into the first snap-fit ​​hole; The intermediate shell (2) is provided with a first buckle (20) that engages with the first snap-fit ​​hole. The wiring housing (3) is snapped onto the side of the intermediate housing (2) facing away from the display housing (1).

2. The temperature controller for central air conditioning according to claim 1, characterized in that, The display housing (1) has a snap-fit ​​protrusion (13) on one side wall opposite to the side wall where the first snap-fit ​​hole is located, and the intermediate housing (2) has a corresponding snap-fit ​​groove (220).

3. The temperature controller for central air conditioning according to claim 1, characterized in that, The side wall of the first snap-fit ​​hole is provided with two sliding holes (12) corresponding to the first snap-fit ​​hole. The elastic pressing frame also includes a pressing plate (40), a sliding column (42), a stop handle (43), and a spring (44). The sliding column (42) is slidably disposed in the sliding hole (12). The pressing head (41) is disposed on the pressing plate (40). The pressing plate (40) is located outside the display shell (1). The stop handle (43) is disposed on one end of the sliding column (42) located inside the display shell (1). The spring (44) is sleeved on the sliding column (42) and located inside the display shell (1).

4. The temperature controller for central air conditioning according to claim 2, characterized in that, A connecting arm (22) extends from the middle shell (2) toward the display shell (1), and a snap-fit ​​groove (220) is provided through the connecting arm (22).

5. The temperature controller for central air conditioning according to claim 1, characterized in that, The wiring housing (3) is provided with a second circuit board (30), the second circuit board (30) is provided with a female connector, the first circuit board (10) is provided with a male connector (100), and the intermediate housing (2) is provided with a clearance notch (21) for the male connector (100) to connect with the female connector.

6. The temperature controller for central air conditioning according to claim 5, characterized in that, The wiring housing (3) has a second buckle (31) and a third buckle (33) respectively on a set of opposing side walls. The intermediate housing (2) has a second snap hole (26). The second buckle (31) engages with the second snap hole (26), and the third buckle (33) engages with the edge of the clearance notch (21).

7. The temperature controller for central air conditioning according to claim 1, characterized in that, The edge of the intermediate shell (2) is provided with heat dissipation holes (24).

8. The temperature controller for central air conditioning according to claim 5, characterized in that, The intermediate shell (2) is provided with a strip-shaped connecting hole (23), and a limiting ring (230) is provided on the side of the intermediate shell (2) facing the display shell (1) corresponding to the strip-shaped connecting hole (23). The wiring shell (3) is provided with a clearance part (32). The strip-shaped connecting hole (23) is used for the connecting bolt to pass through and be threaded into the wire groove on the wall, and the clearance part (32) is used to make way for the connecting bolt.

9. The temperature controller for central air conditioning according to claim 8, characterized in that, There are two strip-shaped connecting holes (23), and the two strip-shaped connecting holes (23) are located on both sides of the clearance notch (21); one of the strip-shaped connecting holes (23) is set vertically in the strip length direction, and the other is set horizontally; the limiting ring (230) is provided with a semi-annular notch (231).

10. The temperature controller for central air conditioning according to claim 5, characterized in that, The wiring housing (3) is provided with a wiring terminal (34), which is electrically connected to the second circuit board (30).

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