A compact DDC controller

Abstract

The present invention discloses a compact DDC controller, comprising an upper case and a lower case. The upper and lower cases are combined to form a box-shaped structure. Four support columns are fixedly connected to the lower case, and a circuit board is mounted on the support columns. The lower case is provided with a clamping mechanism located on both sides of the circuit board, and the circuit board is locked to the support columns by the clamping mechanism. In the structure of the present invention, the circuit board is clamped in the lower case by the clamping mechanism, thereby eliminating the need for bolt tightening operations and facilitating disassembly and installation. While the clamping mechanism clamps the circuit board, it also uses a connecting rod mechanism to provide a greater clamping force under the action of a smaller spring force, thereby improving clamping stability.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent building controllers, and in particular to a compact DDC controller. Background Art

[0002] A DDC controller is a direct-acting controller widely used in intelligent building construction. A DDC system utilizes a microprocessor to perform various logic control functions. It primarily utilizes electronic drives, but can also connect pneumatic mechanisms with sensors. DDC controllers utilize digital control capabilities; a single digital controller can perform the functions of multiple conventional instrument controllers and support multiple control loops. It can reset control parameters and operating status for each adjustable device and communicate with a centralized control computer.

[0003] In intelligent buildings, DDC controllers are typically used to control the operation of equipment within the building, receiving sensor signals and controlling the operation of various devices. DDC controllers in intelligent buildings typically consist of a box-shaped housing housing a control circuit board, which is equipped with device signal interfaces and network signal interfaces. Existing DDC controllers have their circuit boards bolted to the housing. Installation and removal require turning multiple bolts with a screwdriver, and alignment of the screw holes is crucial. This can be quite complex, and during maintenance, the bolts can easily fall off, making it difficult to complete the installation process. Summary of the Invention

[0004] The purpose of the present invention is to solve the above technical problems and provide a compact DDC controller.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A compact DDC controller includes an upper box body and a lower box body. The upper box body and the lower box body are combined into a box-shaped structure. Four support columns are fixedly connected to the lower box body. A circuit board is provided on the support columns. The lower box body is provided with a clamping mechanism. The clamping mechanism is located on both sides of the circuit board, and the circuit board is locked to the support columns by the clamping mechanism.

[0007] Furthermore, the clamping mechanism includes a base plate, to which a hinged frame is fixedly connected, the upper end of the hinged frame is hingedly connected to a pressure plate, and the hinge position of the upper end of the hinged frame and the pressure plate is located in the middle of the pressure plate, one end of the pressure plate is pressed on the board body of the circuit board, and the other end of the pressure plate is hingedly connected to a first connecting rod below, and a second connecting rod is hingedly connected to the base plate, the first connecting rod and the second connecting rod are hingedly connected, and a first compression spring is provided between the second connecting rod and the hinged frame.

[0008] Furthermore, a fixed block is fixedly connected to the outer wall of the second connecting rod, and the fixed block is located in the middle position between the pressure plate and the base plate. One end of the first compression spring is fixedly connected to the middle of the hinge frame, and the other end of the first compression spring is fixedly connected to the fixed block.

[0009] Furthermore, the line connecting the first hinge point between the first connecting rod and the pressure plate and the second hinge point between the second hinge rod and the base plate is the first connecting line, and the hinge point between the first connecting rod and the second connecting rod is located on the side of the first connecting line close to the hinge frame.

[0010] Furthermore, a first stop is fixedly connected to one end of the first connecting rod close to the second connecting rod, and a second stop is fixedly connected to the side wall of the second connecting rod. The first stop is located on the side of the second stop close to the articulated frame, and the first stop and the second stop cooperate to keep the hinge point of the first connecting rod and the second connecting rod from moving to the side of the first connecting line away from the articulated frame.

[0011] Furthermore, a rubber pad is fixedly connected to the bottom of the pressing plate, and the rubber pad is located above the circuit board and is used to be clamped on the circuit board.

[0012] Furthermore, the bottom plate is hingedly connected to the bottom of the lower box body, a second compression spring is provided between the bottom plate and the bottom of the lower box body, and the bottom of the lower box body is fixedly connected to a limiting block, which is located on one side of the bottom plate and is used to limit the bottom plate.

[0013] Furthermore, the upper port of the lower box body is provided with an upwardly extending vertical edge, and the vertical edge is located on the inner side of the upper box body; a locking notch is provided on the vertical edge, and a clamping mechanism is installed at the lower port of the upper box body, and the clamping mechanism includes a side plate fixed to the lower box body, and a mounting groove is provided on the side plate, and a locking block is hingedly connected in the mounting groove, and a locking tongue is provided on one side of the locking block, and the locking tongue is inserted in the locking notch, and a third compression spring is provided in the mounting groove, and the third compression spring is located between the locking block and the mounting groove, and the third compression spring pops the upper end of the locking block outward so that the locking tongue at the lower end of the locking block remains inserted in the locking notch.

[0014] Furthermore, an abutment block is fixedly connected to the inner wall of the side plate, and the end of the abutment block abuts against the inner side of the locking block to limit the locking block.

[0015] Furthermore, a step column is fixedly connected to the upper end of the support column, and positioning grooves are opened on both sides of the circuit board, and the step column is located in the positioning grooves.

[0016] The present invention provides a compact DDC controller having the following beneficial effects: in the structure, a circuit board is clamped in a lower box body by a clamping mechanism, thereby avoiding the need to tighten bolts for bolt fixation and facilitating disassembly and installation; while the clamping machine clamps the circuit board, a connecting rod mechanism is used to provide a greater clamping force under the action of a smaller spring force, thereby improving the stability of the clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings:

[0018] Figure 1 A front view schematic diagram of the structure of a compact DDC controller provided by the present invention;

[0019] Figure 2 This is a schematic diagram of the lower box body and internal top view structure of the present invention;

[0020] Figure 3 for Figure 1 Schematic diagram of the local structure of part A in the middle;

[0021] Figure 4 for Figure 2 Schematic diagram of the local structure of part B in the middle;

[0022] Figure 5 It is a partial side view structural diagram of the clamping mechanism in the present invention;

[0023] Figure 6 Schematic diagram of the matching structure of the upper box body and the lower box body in the present invention;

[0024] Figure 7 This is a schematic diagram of the support column structure in the present invention.

[0025] Explanation of the numbers in the figure: 1. Upper box body; 2. Lower box body; 21. Vertical edge; 22. Locking notch; 3. Support column; 31. Step column; 4. Circuit board; 5. Clamping mechanism; 51. Bottom plate; 52. Articulated frame; 53. Pressing plate; 54. First connecting rod; 55. Second connecting rod; 56. First compression spring; 57. Fixed block; 58. First stop block; 59. Second stop block; 510. Rubber pad; 511. Second compression spring; 512. Limiting block; 6. Clamping mechanism; 61. Side plate; 62. Locking block; 63. Lock tongue; 64. Third compression spring; 65. Abutment block; L, first connecting line. DETAILED DESCRIPTION

[0026] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up-down-left-right-front-back...) are only used to explain the relative position relationship - movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0029] like Figure 1-Figure 7 As shown, a compact DDC controller includes an upper box body 1 and a lower box body 2. The upper box body 1 and the lower box body 2 are combined into a box-shaped structure. Four support columns 3 are fixedly connected to the lower box body 2. A circuit board 4 is supported on the support columns 3. A clamping mechanism 5 is provided on the lower box body 2. The clamping mechanism 5 is located on both sides of the circuit board 4, and the circuit board 4 is locked on the support columns 3 through the clamping mechanism 5.

[0030] By adopting the above technical solution, the circuit board 4 is clamped in the lower box body 2 by the clamping mechanism 5, thereby avoiding the need to tighten the bolts for bolt fixation, and facilitating disassembly and installation.

[0031] Specifically, the clamping mechanism 5 includes a base plate 51, to which a hinged frame 52 is fixedly connected, and the upper end of the hinged frame 52 is hingedly connected to a pressure plate 53, and the hinge position between the upper end of the hinged frame 52 and the pressure plate 53 is located in the middle of the pressure plate 53, one end of the pressure plate 53 is pressed on the board body of the circuit board 4, and the other end of the pressure plate 53 is hingedly connected to a first connecting rod 54 below, and a second connecting rod 55 is hingedly connected to the base plate 51, the first connecting rod 54 and the second connecting rod 55 are hingedly connected, and a first compression spring 56 is provided between the second connecting rod 55 and the hinged frame 52. The elastic force of the first compression spring 56 causes the first connecting rod 54 and the second connecting rod 55 to push up the end of the pressure plate 53 away from the circuit board 4, and the pressure plate 53 is hinged on the hinge frame 52, so that the end of the pressure plate 53 close to the circuit board 4 clamps the circuit board 4 downward; the first compression spring 56 cooperates with the first connecting rod 54 and the second connecting rod 55, and the first connecting rod 54 and the second connecting rod 55 are arranged in a nearly straight line, and the smaller elastic force of the first compression spring 56 is used to generate a larger clamping force through the second connecting rod 55, so that the circuit board 4 is clamped stably; during installation, the second connecting rod 55 or the first connecting rod 54 is pressed to squeeze and contract the first compression spring 56, so that the second connecting rod 55 releases the squeeze on the circuit board 4, thereby completing the removal of the circuit board 4 through simple operation.

[0032] Specifically, a fixing block 57 is fixedly connected to the outer wall of the second connecting rod 55. The fixing block 57 is located in the middle between the pressure plate 53 and the bottom plate 51. One end of the first compression spring 56 is fixedly connected to the middle of the hinge frame 52, and the other end of the first compression spring 56 is fixedly connected to the fixing block 57. By arranging the first compression spring 56 in the middle position, the mechanism is simplified, and the first connecting rod 54 and the second connecting rod 55 can be easily concave and folded inward when disassembled, which facilitates structural layout.

[0033] Specifically, a line connecting the first hinge point between the first connecting rod 54 and the pressure plate 53 and the second hinge point between the second hinge rod and the bottom plate 51 is a first connecting line L. The hinge point between the first connecting rod 54 and the second connecting rod 55 is located on the side of the first connecting line L close to the hinge frame 52. As a result, the first connecting rod 54 and the second connecting rod 55 do not protrude outward, and the circuit board 4 can be released by pressing the first connecting rod 54 or the second connecting rod 55 inward.

[0034] Specifically, a first stopper 58 is fixedly connected to one end of the first connecting rod 54 near the second connecting rod 55, and a second stopper 59 is fixedly connected to the side wall of the second connecting rod 55. The first stopper 58 is located on the side of the second stopper 59 near the hinge frame 52. The first stopper 58 and the second stopper 59 cooperate to prevent the hinge point of the first connecting rod 54 and the second connecting rod 55 from moving to the side of the first connecting line L away from the hinge frame 52. This prevents the first connecting rod 54 and the second connecting rod 55 from rotating outward when the circuit board 4 is not assembled, thereby preventing a reset operation during assembly.

[0035] Specifically, a rubber pad 510 is fixedly connected to the bottom of the pressing plate 53. The rubber pad 510 is located above the circuit board 4 and is used to clamp the circuit board 4. The rubber pad 510 increases friction, thereby improving the stability of clamping.

[0036] Specifically, the bottom plate 51 is hingedly connected to the bottom of the lower case 2. A second compression spring 511 is installed between the bottom plate 51 and the bottom of the lower case 2. A limit block 512 is fixedly connected to the bottom of the lower case 2. The limit block 512 is located on one side of the bottom plate 51 and is used to limit the position of the bottom plate 51. The hinge point between the bottom plate 51 and the bottom of the lower case 2 is located inside the edge of the circuit board 4. This allows the clamping mechanism 5 to be rotated outward during installation, providing control for installing the circuit board 4 and facilitating installation.

[0037] Specifically, the upper port of the lower box body 2 is provided with an upwardly extending vertical edge 21, and the vertical edge 21 is located on the inner side of the upper box body 1; a locking notch 22 is provided on the vertical edge 21, and a clamping mechanism 6 is installed on the lower port of the upper box body 1, and the clamping mechanism 6 includes a side plate 61 fixed to the lower box body 2, and a mounting groove is provided on the side plate 61, and a locking block 62 is hingedly connected to the mounting groove, and a locking tongue 63 is provided on one side of the locking block 62, and the locking tongue 63 is inserted into the locking notch 22, and a third compression spring 64 is provided in the mounting groove, and the third compression spring 64 is located between the locking block 62 and the mounting groove, and the third compression spring 64 pops the upper end of the locking block 62 outward so that the locking tongue 63 at the lower end of the locking block 62 remains inserted in the locking notch 22. The upper box body 1 and the lower box body 2 are fixed by a clamping mechanism 6, which is easy to operate. By pressing the upper end of the locking block 62, the locking tongue 63 can be disengaged from the notch and unlocked, thereby facilitating installation and disassembly and avoiding the need to rotate multiple bolts when using bolt connections.

[0038] Specifically, an abutting block 65 is fixedly connected to the inner wall of the side plate 61 , and an end of the abutting block 65 abuts against the inner side of the locking block 62 to limit the locking block 62 .

[0039] Specifically, the upper end of the support column 3 is fixedly connected to a step column 31, and positioning grooves are provided on both sides of the circuit board 4, and the step column 31 is located in the positioning grooves. The step column 31 cooperates with the positioning grooves to position the circuit board 4.

[0040] The parts not involved in this technical solution can be implemented using existing technologies.

[0041] The basic principles, main features, and characteristics of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A compact DDC controller, comprising an upper box body (1) and a lower box body (2), wherein the upper box body (1) and the lower box body (2) are combined into a box-shaped structure, characterized in that: Four support columns (3) are fixedly connected to the lower box body (2), a circuit board (4) is provided on the support columns (3), a clamping mechanism (5) is provided on the lower box body (2), the clamping mechanism (5) is located on both sides of the circuit board (4), and the circuit board (4) is locked on the support columns (3) through the clamping mechanism (5); The clamping mechanism (5) includes a base plate (51), a hinged frame (52) is fixedly connected to the base plate (51), the upper end of the hinged frame (52) is hingedly connected to a pressure plate (53), and the hinged position between the upper end of the hinged frame (52) and the pressure plate (53) is located in the middle of the pressure plate (53), one end of the pressure plate (53) is pressed on the plate body of the circuit board (4), and the other end of the pressure plate (53) is hingedly connected to a first connecting rod (54) below, and a second connecting rod (55) is hingedly connected to the base plate (51), the first connecting rod (54) and the second connecting rod (55) are hingedly connected, and a first compression spring (56) is provided between the second connecting rod (55) and the hinged frame (52); The first connecting rod and the second connecting rod push up the end of the pressing plate away from the circuit board through the elastic force of the first compression spring, and the pressing plate is hinged on the hinge frame so that the end of the pressing plate close to the circuit board clamps the circuit board downward.

2. The compact DDC controller according to claim 1, characterized in that: A fixed block (57) is fixedly connected to the outer wall of the second connecting rod (55), and the fixed block (57) is located in the middle between the pressure plate (53) and the bottom plate (51). One end of the first compression spring (56) is fixedly connected to the middle of the hinge frame (52), and the other end of the first compression spring (56) is fixedly connected to the fixed block (57).

3. The compact DDC controller according to claim 1, characterized in that: A line connecting a first hinge point between the first connecting rod (54) and the pressure plate (53) and a second hinge point between the second hinge rod and the bottom plate (51) is a first connecting line (L), and a hinge point between the first connecting rod (54) and the second connecting rod (55) is located on a side of the first connecting line (L) close to the hinge frame (52).

4. The compact DDC controller according to claim 1, characterized in that: A first stopper (58) is fixedly connected to one end of the first connecting rod (54) close to the second connecting rod (55), and a second stopper (59) is fixedly connected to the side wall of the second connecting rod (55). The first stopper (58) is located on the side of the second stopper (59) close to the articulated frame (52). The first stopper (58) and the second stopper (59) cooperate to keep the hinge point of the first connecting rod (54) and the second connecting rod (55) from moving to the side of the first connecting line (L) away from the articulated frame (52).

5. The compact DDC controller according to claim 1, characterized in that: A rubber pad (510) is fixedly connected to the bottom of the pressing plate (53), and the rubber pad (510) is located above the circuit board (4) and is used to be clamped on the circuit board (4).

6. The compact DDC controller according to claim 1, characterized in that: The bottom plate (51) is hingedly connected to the bottom of the lower box body (2); a second compression spring (511) is provided between the bottom plate (51) and the bottom of the lower box body (2); a limiting block (512) is fixedly connected to the bottom of the lower box body (2); the limiting block (512) is located on one side of the bottom plate (51) and is used to limit the bottom plate (51).

7. The compact DDC controller according to claim 1, characterized in that: The upper end of the lower box body (2) is provided with an upwardly extending vertical edge (21), and the vertical edge (21) is located on the inner side of the upper box body (1); a locking notch (22) is provided on the vertical edge (21), and a clamping mechanism (6) is installed on the lower end of the upper box body (1), and the clamping mechanism (6) includes a side plate (61) fixed to the upper box body (1), and a mounting groove is provided on the side plate (61), and a locking block (6) is hingedly connected in the mounting groove. 2), a locking tongue (63) is provided on one side of the locking block (62), and the locking tongue (63) is inserted into the locking notch (22). A third compression spring (64) is provided in the mounting groove, and the third compression spring (64) is located between the locking block (62) and the mounting groove. The third compression spring (64) pops the upper end of the locking block (62) outward so that the locking tongue (63) at the lower end of the locking block (62) remains inserted into the locking notch (22).

8. The compact DDC controller according to claim 7, characterized in that: An abutment block (65) is fixedly connected to the inner wall of the side plate (61), and the end of the abutment block (65) abuts against the inner side of the locking block (62) to limit the locking block (62).

9. The compact DDC controller according to claim 1, characterized in that: The upper end of the support column (3) is fixedly connected to a step column (31), and positioning grooves are provided on both sides of the circuit board (4), and the step column (31) is located in the positioning grooves.

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