A fire control module structure

Abstract

The present invention relates to the technical field of fire-fighting equipment, and specifically discloses a fire-fighting control module structure. It includes: a base, an upper shell, a circuit board, and a terminal block. The upper surface and / or lower surface of the circuit board are provided with a plurality of electrical contact sites. The upper shell is provided with a spring clamping mechanism. The circuit board is fixed in the upper shell to form an upper module assembly. The terminal block includes a substrate and an upper spring and a lower spring connected to the substrate. The terminal block is installed on the base through the substrate to form a lower module assembly. The upper module assembly and the lower module assembly are closed, and the lower surface of the circuit board is elastically abutted against the lower spring. The spring clamping mechanism presses the upper spring against the upper surface of the circuit board and elastically deforms and presses it downward. The circuit board is clamped between the upper spring and the lower spring, and the upper spring and / or the lower spring are in contact with the electrical contact sites. This solution not only has high assembly efficiency, but also has good connection firmness, thereby improving the reliability of current transmission and signal transmission of the fire-fighting control module structure.

Description

Technical Field

[0001] The present invention relates to the technical field of fire-fighting equipment, and particularly discloses a fire-fighting control module structure. Background Art

[0002] The fire control module is an important assembly part of the fire linkage control system. It is generally divided into input module, output module, input and output module, relay module, isolation module, etc. according to its function.

[0003] The existing fire control module structure generally consists of a base, an upper shell, a circuit board, and wiring terminals. Currently, the connection between the wiring terminals and the circuit board on the market mostly relies on single-sided contact.

[0004] One approach involves fixing the terminal blocks, crimping screws, and crimping plates to a base. The terminal blocks contact the circuit board through springs at the bottom of the board, as in the integrated base contact assembly disclosed in Patent No. CN206461132U. The springs elastically contact the bottom of the printed circuit board, thereby conducting the circuit. However, installation issues (such as base deformation) can lead to poor contact between the springs and the board, resulting in a circuit failure.

[0005] Another type is that the wiring terminal, wire pressing screw and wire pressing plate are fixed to the base, the lower spring of the middle spring is in contact with the wiring terminal, and the upper spring of the middle spring is in contact with the circuit board at the bottom of the circuit board. For example, patent number CN203225376U discloses a plug-in terminal and an alarm using the plug-in terminal, which adopts an electrical connection method in which the two conductive plates are pressed against each other from the side, so that the conductive plates are in contact more effectively and the electrical connection is more reliable. Although this type of structure is more convenient to install and use, the production cost is higher due to the addition of the middle spring, and the circuit board may also be de-energized due to installation reasons.

[0006] Therefore, in view of the defects of poor connection stability and unknown electrical connection reliability between the terminal blocks and circuit boards of the current fire protection module structure, it is necessary to develop a completely new fire protection control module structure. Summary of the Invention

[0007] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a fire control module structure.

[0008] The present invention discloses a fire control module structure, which adopts the following technical solutions:

[0009] A fire control module structure includes: a base, an upper shell, a circuit board and wiring terminals, the upper surface and / or lower surface of the circuit board are provided with a plurality of electrical contact sites, the upper shell is provided with a spring clamping mechanism, the circuit board is fixed in the upper shell, forming an upper module assembly; the wiring terminals include a substrate and an upper spring sheet and a lower spring sheet connected to the substrate, the wiring terminals are mounted on the base through the substrate, forming a lower module assembly; the upper module assembly and the lower module assembly are closed, the lower surface of the circuit board is elastically abutted against the lower spring sheet, the spring clamping mechanism presses the upper spring sheet against the upper surface of the circuit board and elastically deforms and presses it downward, the circuit board is clamped between the upper spring sheet and the lower spring sheet, and the upper spring sheet and / or the lower spring sheet are in contact with the electrical contact sites.

[0010] Preferably, it further includes a middle buckle, the circuit board is fixed to the upper shell through the middle buckle, and the spring pressing mechanism is arranged on the middle buckle.

[0011] Further preferably, the base sheet, upper spring sheet and lower spring sheet are integrally formed, the upper spring sheet is bent to form a vertical portion and a clamping portion, the vertical portion connects the clamping portion to the base sheet, the clamping portion is bent toward one side of the lower spring sheet, the clamping portion elastically abuts against the spring sheet clamping mechanism, and the end of the clamping portion elastically abuts against the upper surface of the circuit board.

[0012] Further preferably, the vertical portion is bent upward to form a side bend portion, and the side bend portion bulges outward away from the direction of the lower elastic sheet.

[0013] Further preferably, a driving part is provided on the spring sheet pressing mechanism, and the driving part presses against the side bending part to elastically bend the side bending part toward the lower spring sheet, and the pressing part follows the side bending part and presses against the upper surface of the circuit board.

[0014] Further preferably, before the upper module assembly and the lower module assembly are closed into place, when the lower surface of the circuit board passes over the end of the pressing part of the upper spring sheet and begins to contact the lower spring sheet, the driving part begins to produce a pressing and bending effect on the side bending part, driving the end of the pressing part of the upper spring sheet to elastically abut against the upper surface of the circuit board; as the upper module assembly and the lower module assembly are closed into place, the spring sheet pressing mechanism produces a pressing effect on the pressing part of the upper spring sheet, and again presses the pressing part of the upper spring sheet against the upper surface of the circuit board.

[0015] Further preferably, a limiting portion is provided on the spring sheet pressing mechanism, and the limiting portion is located on a side of the upper spring sheet vertical portion facing away from the lower spring sheet.

[0016] Preferably, the upper spring sheet pressing portion is bent to form an arc shape, the side wall of the spring sheet pressing mechanism in contact with the pressing portion is set as an arc surface, and the arc surface of the spring sheet pressing mechanism is adapted to the arc-shaped pressing portion.

[0017] Preferably, the upper spring piece is bent to form a vertical portion, a pressing portion and a guide portion, and the guide portion is provided at the end of the pressing portion to form an arc-shaped guide surface, and the edge of the circuit board slides between the upper spring piece and the lower spring piece through the arc-shaped guide surface.

[0018] Preferably, a first hook is provided in the upper shell, and a first buckle position is provided on the middle buckle to be coupled with the first hook; a second hook is provided on the middle buckle, and a second buckle position is provided on the base to be coupled with the second hook.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] This solution is to provide a terminal with a special structure containing an upper spring sheet and a lower spring sheet, and at the same time provide a spring sheet pressing mechanism in the upper shell, so that the upper spring sheet is elastically pressed against the upper surface of the circuit board after being pressed downward by the spring sheet pressing mechanism, so that the upper spring sheet and the lower spring sheet of the terminal clamp and fix the upper and lower surfaces of the circuit board. The connection between the circuit board and the terminal is completed during the process of assembling the upper and lower module components. Different from the existing one-sided contact between the terminal and the circuit board, this solution not only has high assembly efficiency, but also has good connection firmness, thereby improving the reliability of current transmission and signal transmission of the fire control module structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a fire control module structure of this embodiment;

[0022] Figure 2 This is a schematic diagram of the disassembled structure of the upper module component of a fire control module structure of this embodiment;

[0023] Figure 3 This is a schematic diagram of an upper module assembly of a fire control module structure of this embodiment after assembly;

[0024] Figure 4 for Figure 3 A magnified view of;

[0025] Figure 5 This is a schematic diagram of the wiring terminal structure of a fire control module structure of this embodiment;

[0026] Figure 6 This is a schematic diagram of the assembly of an upper module component and a lower module component of a fire control module structure of this embodiment;

[0027] Figure 7 This is a schematic diagram of the assembly process of a fire control module structure of this embodiment;

[0028] Figure 8 This is a second schematic diagram of the assembly process of a fire control module structure of this embodiment;

[0029] Figure 9 3 is a schematic diagram of the assembly process of a fire control module structure of this embodiment.

[0030] Description of Figure Numbers:

[0031] 1. Upper shell; 11. First hook; 2. Circuit board; 3. Middle buckle; 31. Hole position; 32. Spring clip pressing mechanism; 33. Limiting part; 34. Driving part; 35. First buckle position; 36. Second hook; 4. Base; 41. Second buckle position; 5. Terminal block; 51. Substrate; 52. Upper spring clip; 521. Vertical part; 522. Side bending part; 523. Pressing part; 524. Guide part; 53. Lower spring clip; 100. Upper module assembly; 200. Lower module assembly. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] A fire control module structure, as shown in the figure, includes an upper shell 1, a circuit board 2, a base 4, and several connection terminals 5. The upper and / or lower surfaces of the circuit board 2 are provided with several electrical contact points. The upper shell 1 is equipped with several spring-loaded clamping mechanisms 32. The circuit board 2 is fixed in the upper shell 1, forming an upper module assembly 100. As shown in the figure, the connection terminals 5 include a substrate 51, an upper spring 52, and a lower spring 53 connected to the substrate 51. The connection terminals 5 are mounted on the base 4 via the substrate 51, forming a lower module assembly 200. When the upper module assembly 100 and the lower module assembly 200 are closed, the lower surface of the circuit board 2 elastically abuts the lower spring 53. The spring-loaded clamping mechanism 32 presses the upper spring 52 against the upper surface of the circuit board 2, causing it to deform and press downward toward the upper surface of the circuit board 2. The circuit board 2 is clamped between the upper and lower spring 52, 53, and the upper and / or lower spring 53 contact the electrical contact points of the circuit board 2. Compared with the prior art, the upper spring piece 52 and the lower spring piece 53 of the terminal block 5 of this solution are in contact with the upper surface and the lower surface of the circuit board 2 respectively, thereby increasing the reliability of current transmission and signal transmission.

[0034] In this embodiment, referring to Figure 2The fire control module structure of this embodiment also includes a center buckle 3, which holds the circuit board 2 within the upper housing 1. The upper housing 1 is provided with a first hook 11, and the center buckle 3 is provided with a first buckle position 35 that engages with the first hook 11. The first hook 11 and the first buckle position 35 interlock and engage with each other, so that the upper housing 1, circuit board 2, and center buckle 3 are assembled to form the upper module assembly 100. In other embodiments, the circuit board 2 can also be directly fixedly connected to the upper housing 1.

[0035] Reference Figure 3-4 The center buckle 3 is provided with a second hook 36, and the base 4 is provided with a second latch 41 that engages with the second hook 36, thereby closing and securing the upper module assembly 100 and the lower module assembly 200. The center buckle 3 is provided with a plurality of holes 31. A plurality of spring-loaded clamping mechanisms 32 are disposed within the center buckle 3 and located on one side of the holes 31. The holes 31 correspond one-to-one with the electrical contact points on the circuit board 2, exposing the electrical contact points on the circuit board 2 to the outside of the center buckle 3. The connection terminals 5 extend into the center buckle 3 through the corresponding holes 31. The spring-loaded clamping mechanisms 32 of the center buckle 3 compress the corresponding springs 52 on the connection terminals 5, clamping the circuit board 2 between the upper springs 52 and lower springs 53. The center buckle 3 not only secures the circuit board 2, improving assembly efficiency and installation stability, but also compresses the upper springs 52, improving the connection reliability between the circuit board 2 and the connection terminals 5.

[0036] Reference Figure 5 The terminal block 5 is made of a material with good elasticity, such as stainless steel, beryllium copper, or phosphor copper. The base plate 51, upper spring plate 52, and lower spring plate 53 are integrally formed by stamping and bending. The upper spring plate 52 is bent to form a vertical portion 521 and a pressing portion 523. The vertical portion 521 connects the pressing portion 523 to the base plate 51. The pressing portion 523 is bent toward the lower spring plate 53. The pressing portion 523 elastically abuts against the spring plate pressing mechanism 32, and the end of the pressing portion 523 elastically abuts against the upper surface of the circuit board 2. In this embodiment, the pressing portion 523 is bent into an arc shape. The sidewall of the spring plate pressing mechanism 32 that contacts the pressing portion 523 is configured as an arc surface. The arc surface of the spring plate pressing mechanism 32 matches the arc-shaped pressing portion 523, thereby facilitating the smooth movement of the upper spring plate 52 when the spring plate pressing mechanism 32 presses down to clamp the circuit board 2. The substrate 51 is assembled with the pressing screws and the pressing plate for connection with external cables.

[0037] Reference Figure 5In this embodiment, the vertical portion 521 of the upper spring plate 52 is further bent to form a side bend 522, which bulges outward away from the lower spring plate 53. Furthermore, the end of the pressing portion 523 is further bent to form a guide portion 524. The guide portion 524 and the end of the pressing portion 523 form an arcuate guide surface. The vertical portion 521, the side bend 522, the pressing portion 523, and the guide portion 524 are all integrally formed by bending. The provision of the side bend 522 increases the elasticity of the pressing portion 523, making it more susceptible to deformation and contact with the circuit board 2 after being pressed downward by the spring plate pressing mechanism 32. Furthermore, the provision of the guide portion 524 allows the edge of the circuit board 2 to slide between the upper spring plate 52 and the lower spring plate 53 via the arcuate guide surface when the upper module assembly 100 and the lower module assembly 200 are closed, thereby improving the reliability and smoothness of assembly and effectively reducing scratches on the circuit board 2 during installation.

[0038] Reference Figure 4 In this embodiment, the spring-plate pressing mechanism 32 is provided with a stopper 33 located on the side of the vertical portion 521 of the upper spring plate 52 facing away from the lower spring plate 53. During the closing process of the upper module assembly 100 and the lower module assembly 200, the stopper 33 prevents the vertical portion 521 from bending away from the circuit board 2, thereby further improving assembly reliability and effectively increasing production yield.

[0039] Reference Figure 4 In this embodiment, the spring-clip clamping mechanism 32 is provided with a driving portion 34, which is located on one side of the limiting portion 33 and protrudes toward the upper spring plate 52. When the upper module assembly 100 and the lower module assembly 200 are closed, the driving portion 34 presses against the side bend portion 522, elastically bending the side bend portion 522 toward the lower spring plate 53. The clamping portion 523 then follows the side bend portion 522 and presses against the upper surface of the circuit board 2. The driving portion 34 of the spring-clip clamping mechanism 32 cooperates with the side bend portion 522 of the upper spring plate 52 to further strengthen the clamping force between the wiring terminal 5 and the circuit board 2, thereby further enhancing the reliability of current and signal transmission within the fire control module.

[0040] The assembly process and functional implementation of the fire control module structure of this solution are as follows:

[0041] After the upper module assembly 100 and the lower module assembly 200 are assembled, the finished product can be installed. During installation, the upper module assembly 100 is installed facing the lower module assembly 200 in the indicated direction. Before the lower surface of the circuit board 2 of the upper module assembly 100 completely passes over the guide portion 524 of the spring clip 52 on the connection terminal 5, the spring clip pressing mechanism 32, the limiting portion 33, and the driving portion 34 on the center buckle 3 do not interact with the spring clip 52 on the connection terminal 5. At this time, the driving portion 34 only serves as a guide and limiter, preventing the spring clip 52 on the connection terminal 5 from bending sideways away from the circuit board 2.

[0042] See Figure 7 As the upper module assembly 100 continues to move forward, when the lower surface of the circuit board 2 of the upper module assembly 100 completely passes over the spring piece 52 on the terminal 5, the spring piece pressing mechanism 32, the limiting portion 33 and the driving portion 34 on the middle buckle 3 and the terminal 5 still do not interact. At this time, the limiting portion 33 and the driving portion 34 simultaneously play a guiding and limiting role, preventing the spring piece 52 on the terminal 5 from bending sideways in the direction away from the circuit board 2.

[0043] See Figure 8 As the upper module assembly 100 continues to move forward and the lower surface of the circuit board 2 of the upper module assembly 100 begins to contact the lower spring piece 53 of the terminal 5, the driving portion on the middle buckle and the side bending portion of the upper spring piece begin to produce a pressing and bending effect, forcing the upper spring piece to bend toward the circuit board. At this time, the spring piece pressing mechanism on the middle buckle and the terminal still do not work.

[0044] See Figure 9 , the upper module assembly 100 continues to move forward, the driving part 34 on the middle buckle 3 and the side bending part 522 of the upper spring piece 52 continue to work, forcing the upper spring piece 52 of the terminal block 5 to further bend toward the circuit board 2, and the upper spring piece 52 of the terminal block 5 contacts the upper surface of the circuit board 2 and is pressed against the circuit board 2. After reaching the limit position, the second hook 36 on the middle buckle 3 and the second buckle position 41 on the base engage with each other. At the same time, the spring piece pressing mechanism 32 on the middle buckle 3 presses on the pressing part 523 of the upper spring piece 52, further pressing the upper spring piece 52 of the terminal block 5 against the circuit board 2. The installation process is completed and the product function is realized.

[0045] The technical solution provided by the present invention is introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A fire control module structure, comprising a base, an upper shell, a circuit board and a terminal block, characterized in that: The upper surface and / or lower surface of the circuit board are provided with a plurality of electrical contact sites, the upper shell is provided with a spring-type pressing mechanism, and the circuit board is fixed in the upper shell to form an upper module assembly; the terminal block includes a substrate and an upper spring-type and a lower spring-type connected to the substrate, and the terminal block is mounted on the base via the substrate to form a lower module assembly; when the upper module assembly and the lower module assembly are closed, the lower surface of the circuit board elastically abuts against the lower spring-type, and the spring-type pressing mechanism presses the upper spring-type against the upper surface of the circuit board to elastically deform and press it downward toward the upper surface of the circuit board, so that the circuit board is clamped between the upper spring-type and the lower spring-type, and the upper spring-type and / or the lower spring-type make contact with the electrical contact sites; It also includes a middle buckle, the circuit board is fixed to the upper shell by the middle buckle, and the spring pressing mechanism is arranged on the middle buckle; The base sheet, the upper spring sheet, and the lower spring sheet are integrally formed, the upper spring sheet is bent to form a vertical portion and a pressing portion, the vertical portion connects the pressing portion to the base sheet, the pressing portion is bent toward one side of the lower spring sheet, the pressing portion elastically abuts against the spring sheet pressing mechanism, and the end of the pressing portion elastically abuts against the upper surface of the circuit board; The vertical portion is bent upward to form a side bend, and the side bend bulges outward away from the direction of the lower elastic sheet; The spring sheet pressing mechanism is provided with a driving part, which presses against the side bending part to elastically bend the side bending part toward the lower spring sheet, and the pressing part follows the side bending part and presses against the upper surface of the circuit board; Before the upper module assembly and the lower module assembly are closed into place, when the lower surface of the circuit board passes over the end of the pressing part of the upper spring sheet and begins to contact the lower spring sheet, the driving part begins to produce a pressing and bending effect on the side bending part, driving the end of the pressing part of the upper spring sheet to elastically abut against the upper surface of the circuit board; as the upper module assembly and the lower module assembly are closed into place, the spring sheet pressing mechanism produces a pressing effect on the pressing part of the upper spring sheet, and again presses the pressing part of the upper spring sheet against the upper surface of the circuit board.

2. A fire control module structure according to claim 1, characterized in that: The spring sheet pressing mechanism is provided with a limiting portion, and the limiting portion is located on a side of the upper spring sheet vertical portion facing away from the lower spring sheet.

3. A fire control module structure according to claim 1, characterized in that: The upper spring sheet pressing portion is bent to form an arc shape, and the side wall of the spring sheet pressing mechanism in contact with the pressing portion is set as an arc surface, and the arc surface of the spring sheet pressing mechanism is adapted to the arc-shaped pressing portion.

4. A fire control module structure according to claim 1, characterized in that: The upper spring piece is bent to form a vertical portion, a pressing portion and a guide portion. The guide portion is provided at the end of the pressing portion to form an arc-shaped guide surface. The edge of the circuit board slides between the upper spring piece and the lower spring piece through the arc-shaped guide surface.

5. A fire control module structure according to claim 1, characterized in that: A first hook is provided in the upper shell, and a first buckle position is provided on the middle buckle to be engaged with the first hook; a second hook is provided on the middle buckle, and a second buckle position is provided on the base to be engaged with the second hook.

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