A diaphragm booster pump for an integrated circuit board
Patent Information
- Application Number
- CN202522282860.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-29
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-10-29
AI Technical Summary
这种设计在实际应用中存在以下缺陷：控制模块需独立安装于泵体外部，导致泵体整体系统体积增加
将控制电路板直接集成于后盖内侧腔室，替代传统外置控制板，安装后盖之前即可预先将控制电路板固定在机身后端，避免了外置控制模块占用额外空间。另外，利用构件与限位槽的配合实现电路板的初定位，方便安装，提高效率，同时，利用构件来缠绕电源线和/或信号线，能够有效避免电源线和/或信号线松散或脱落，也减少了电源线和/或信号线因拉扯、晃动导致从电路板上脱落的风险。
Smart Images
Figure CN224800455U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of diaphragm booster pump technology, and in particular to a diaphragm booster pump for an integrated circuit board. Background Technology
[0002] Traditional diaphragm booster pumps typically employ an external control module design, meaning the control module (e.g., a control circuit board) is located outside the pump body (body, pump head, rear cover) and electrically connected via wires. This design has the following drawbacks in practical applications: the control module must be independently installed outside the pump body, increasing the overall system size. In confined spaces (such as some precision miniaturized equipment), this separate layout of the control module and pump body is easily limited by installation space constraints.
[0003] Furthermore, if the control circuit board is integrated inside the diaphragm booster pump, how to position and install the control circuit board, and how to lead out the cables (power lines, signal lines, etc.) of the control circuit board are also technical problems that need to be considered and solved by those skilled in the art. Utility Model Content
[0004] This utility model provides a diaphragm booster pump for an integrated circuit board to solve the problems in the prior art.
[0005] The present invention adopts the following technical solution: a diaphragm booster pump for an integrated circuit board, comprising a body; a pump head detachably mounted on the front end of the body; and a rear cover detachably mounted on the rear end of the body, with a cavity formed between the body and the rear cover; the diaphragm booster pump further comprises: a component located on the end face of the rear end of the body; and a circuit board mounted on the end face of the rear end of the body and located within the cavity; the circuit board has a limiting groove adapted to the component, and power lines and signal lines led out from the circuit board; the component is at least partially embedded in the limiting groove to achieve radial and / or circumferential positioning of the circuit board relative to the rear end face of the body, and the power lines and / or signal lines are at least partially wound around the component, with their leads extending out of the rear cover and out of the cavity.
[0006] Preferably, the component includes: a first column, at least partially embedded in the limiting groove; a second column, cooperating with the first column to form a power cord winding post; the positive wire of the power cord is at least partially wound around the first column and the second column; a third column, at least partially embedded in the limiting groove; a fourth column, cooperating with the third column to form a power cord winding post; the negative wire of the power cord is at least partially wound around the third column and the fourth column.
[0007] Preferably, a notch is formed on the circuit board near the component, so that the limiting groove is a non-closed arc groove structure.
[0008] Preferably, the arc length of the limiting groove is greater than half the circumference of the original complete circular hole, so as to restrict the radial movement of the component within the limiting groove.
[0009] Preferably, the power line and signal line are led out from the side of the circuit board near the notch.
[0010] Preferably, the diaphragm booster pump further includes: positioning protrusions, at least two of which are located on the end face of the rear end of the machine body; the circuit board is mounted on the positioning protrusions, thereby forming a gap between the circuit board and the end face of the rear end of the machine body.
[0011] Preferably, the power line and / or signal line are led out from within the gap.
[0012] Preferably, the end face of the rear end of the housing has a pin that is electrically connected to the power input terminal of the motor inside the housing; the circuit board has a socket that matches the pin; the pin is inserted into the socket to realize the electrical connection between the circuit board and the motor.
[0013] Preferably, the side wall of the rear cover is provided with a cable outlet, through which the power cable and / or signal cable extends to the outside of the cavity.
[0014] Preferably, a rubber sleeve is provided at the outlet, the rubber sleeve including a first connecting part having a male plug, at least two first wire holes on the male plug, and a first opening extending radially from one side of the first wire holes; a second connecting part having a female slot adapted to the male plug, at least two second wire holes, and a second opening communicating with the second wire holes; each second wire hole penetrates two opposite sidewalls of the female slot; the male plug is embedded in the female slot so that the first wire holes and second wire holes correspond one-to-one and cooperate to form a complete loop-shaped wire hole; the power line and / or signal line are inserted into the corresponding loop-shaped wire hole to achieve sealed contact between the power line and / or signal line and the rubber sleeve.
[0015] Preferably, a positioning boss is also provided on the end face of the rear end of the body; the first connecting part also includes a positioning groove adapted to the positioning boss.
[0016] Preferably, the second connecting part further includes: a limiting part, which protrudes from the end face of the second connecting part away from the second wire hole, thereby forming a stepped part; when the back cover is installed on the machine body, the limiting part fits against the inner wall of the back cover, and the end of the wire outlet is pressed against the stepped part; the positioning boss is embedded in the positioning groove.
[0017] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects: The control circuit board is directly integrated into the inner cavity of the rear cover, replacing the traditional external control board. This allows the control circuit board to be pre-fixed to the rear of the machine before installing the rear cover, avoiding the need for an external control module to occupy extra space. Furthermore, the use of components and limiting grooves for initial positioning of the circuit board facilitates installation and improves efficiency. Simultaneously, the use of components to wrap the power and / or signal cables effectively prevents them from becoming loose or falling off, reducing the risk of them detaching from the circuit board due to pulling or shaking. Attached Figure Description
[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the rear cover of this utility model after it is opened from the body; Figure 3 for Figure 2 Enlarged view of section A in the image; Figure 4 This is a three-dimensional structural diagram of the circuit board of this utility model near the body. Figure 5 This is a three-dimensional structural diagram of the fuselage of this utility model; Figure 6 This is a three-dimensional structural diagram of the back cover of this utility model; Figure 7 This is an exploded view of the rubber sleeve of this utility model.
[0019] Figure label: 1-Body; 11-Pin; 12-Positioning boss; 2-Pump head; 3-Back cover; 31-Cable outlet; 311-End; 4-chamber; 5-Component; 51-First column; 52-Second column; 53-Third column; 54-Fourth column; 6-Circuit board; 61-Limiting groove; 62-Power cable; 63-Signal cable; 64-Notch; 65-Socket; 66-Positioning hole; 7-Positioning protrusion; 71-Mounting hole; 8-Rubber cable sleeve; 81-First connecting part; 811-Male plug; 812-First wire hole; 813-First opening; 814-Positioning groove; 82-Second connecting part; 821-Female slot; 822-Second wire hole; 823-Second opening; 824-Limiting part; 825-Step part; 9-Screw. Detailed Implementation
[0020] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.
[0021] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.
[0022] Reference Figures 1 to 7 As shown, this utility model embodiment provides a brushless diaphragm booster pump for an integrated circuit board, mainly including a body 1, a pump head 2, a rear cover 3, a component 5, and a circuit board 6; the pump head 2 is detachably installed at the front end of the body 1 (for example, the pump head is detachably installed at the front end of the body by bolts); the rear cover 3 is detachably installed at the rear end of the body 1 (for example, the rear cover is detachably installed at the rear end of the body by bolts), and a chamber 4 is formed between the body 1 and the rear cover 3 to provide installation space for the internal component 5 and the circuit board 6.
[0023] Component 5 is located on the end face of the rear end of the machine body 1; circuit board 6 is mounted on the end face of the rear end of the machine body 1 and is located within the cavity 4; the circuit board 6 has a limiting groove 61 adapted to the component 5, and power lines 62 and signal lines 63 leading out from the circuit board 6. The component 5 is at least partially embedded in the limiting groove 61, so that the circuit board 6 is radially and / or circumferentially (rotation direction) positioned relative to the rear end face of the machine body 1, realizing the initial positioning of the circuit board 6 relative to the machine body 1, and making the positioning hole 66 on the circuit board 6 aligned with the mounting hole 71 on the positioning protrusion 7, so that the circuit board 6 can be fixed to the positioning protrusion 7 by screws 9. In this way, the workers on the production line only need to embed the component 5 into the limiting groove 61 to realize the initial positioning of the circuit board 6 and the alignment of the positioning hole 66 and the mounting hole 71. Subsequently, the screws 9 are screwed into the positioning hole 66 and the mounting hole 71, which can greatly improve production efficiency. Furthermore, the power cord 62 and / or signal cord 63 are at least partially wrapped around the component 5, with their leads extending out of the rear cover 3 and into the chamber 4 to enable connection with external devices. That is, workers on the production line can wrap the power cord 62 and / or signal cord 63, which originates from the circuit board 6, around the component 5, preventing them from becoming loose or falling off. This reduces the risk of the power cord 62 and / or signal cord 63 detaching from the circuit board due to pulling or shaking, thus extending the equipment's lifespan.
[0024] In summary, by directly integrating the control circuit board 6 into the chamber 4, replacing the traditional external control circuit board, the control circuit board 6 can be pre-fixed to the rear end of the body 1 before installing the rear cover 3. Therefore, integrating the circuit board 6 into the chamber 4 avoids the need for an external control circuit board to occupy additional space. In addition, the initial positioning of the circuit board 6 is achieved by using the cooperation between the component 5 and the limiting groove 61, which facilitates installation and improves efficiency. At the same time, using the component 5 to wrap the power cable 62 and / or signal cable 63 can effectively prevent the power cable 62 and / or signal cable 63 from becoming loose or falling off, and also reduces the risk of the power cable 62 and / or signal cable 63 falling off the circuit board 6 due to pulling or shaking.
[0025] Reference Figure 3 and Figure 5 As shown, in some practical applications, the component 5 includes a first column 51, a second column 52, a third column 53, and a fourth column 54. The first column 51 is at least partially embedded in the limiting groove 61; the second column 52 cooperates with the first column 51 to form a power cord winding post; the positive wire of the power cord 62 is at least partially wound around the first column 51 and the second column 52; the third column 53 is at least partially embedded in the limiting groove 61; the fourth column 54 cooperates with the third column 53 to form a power cord winding post; the negative wire of the power cord 62 is at least partially wound around the third column 53 and the fourth column 54.
[0026] In this embodiment, a DC power supply is used, meaning the power line has a positive and a negative wire; the first pillar 51 and the third pillar 53 are respectively embedded in the limiting slot 61 of the circuit board 6 (which can be two independent slots or different areas of the same slot, such as...). Figure 4 As shown, these are two independent slots), and the radial movement and circumferential rotation of the circuit board 6 are restricted by fixing it at two points. The first column 51 and the second column 52 are arranged in parallel to form a double-column winding structure, and the positive wire of the power line 62 is wound along the gap between the two columns or around the outer periphery (e.g., Figure 3 The power line 62 is fixed and guided by the spacing between the columns (as shown in the "S" shape). Similarly, the third column 53 and the fourth column 54 form another independent double-column winding structure for the power line, fixing and guiding the negative terminal of the power line 62. In this embodiment, the signal line passes between the two double-column winding structures. It should be noted that the two double-column winding structures are not limited to fixing the power line 62; they can also be used to fix the signal line 63.
[0027] Specifically, a notch 64 is formed on the circuit board 6 near the component 5 (see reference). Figures 3 to 4 This makes the limiting groove 61 a non-closed arc groove structure. The power line 62 and signal line 63 are led out from the side of the circuit board 6 near the notch 64.
[0028] The limiting groove 61 on the side of the circuit board 6 near component 5 is designed as a non-closed arc groove (i.e., one end of the arc groove has an opening). The notch 64 is formed by machining, and the area of the notch 64 does not obstruct the second column 52 and the fourth column 54. When winding the wire, the operator can directly contact the second column 52 / fourth column 54 through the notch 64 without having to go around or lift the circuit board 6, thus achieving rapid winding of the power line 62 and / or signal line 63. When installing the circuit board 6, the first column 51 / third column 53 is first inserted into the non-closed arc groove. After positioning, the notch 64 naturally exposes the second column 52 / fourth column 54. Therefore, the operator can either wind the wire first and then install the circuit board 6, or install the circuit board 6 first and then wind the wire. When installing the circuit board 6 first and then winding the wire, the notch 64 allows the operator to directly contact the winding post without flipping or moving the circuit board 6, reducing obstacles during hand operation. In addition, when it is necessary to replace the circuit board 6, the wound cable can be unwound directly from the notch 64, and then the circuit board 6 can be removed, which can reduce damage to the cable.
[0029] Specifically, the arc length of the limiting groove 61 is greater than half the circumference of the original complete circular hole (the complete circular hole is the shape of the limiting groove before the circuit board 6 is cut to form the notch 64, and the arc angle of the complete circular hole is 360°) (after cutting to form the notch 64, the arc angle of the limiting groove 61 is greater than 180°, for example, 240°), so as to restrict the radial movement of the member 5 in the limiting groove 61.
[0030] Reference Figure 3 and Figure 5 As shown, in some practical applications, the axial mounting of the circuit board 6 is achieved through the following structure: the diaphragm booster pump also includes two positioning protrusions 7 located on the end face of the rear end of the body 1; the circuit board 6 is mounted on the positioning protrusions 7 (i.e., fixed by screws 9), thereby forming a gap between the circuit board 6 and the end face of the rear end of the body 1, and the power line 62 and / or signal line 63 are led out from the gap.
[0031] The height of the positioning protrusion 7 determines the size of the gap. The circuit board 6 is mounted above the end face of the chassis 1, avoiding direct contact with the end face (to prevent interference between the rear end face of the chassis and the electronic components on the circuit board). At the same time, the gap provides independent space for the cables (power line 62 and / or signal line 63), preventing the cables from being squeezed by the circuit board 6 and the end face of the chassis 1. Moreover, the gap also forms an air circulation space, allowing the heat generated by the circuit board 6 during operation to dissipate to the outside.
[0032] Reference Figures 3 to 5As shown, in some practical applications, the electrical connection of the circuit board 6 is achieved through the following structure: the end face of the rear end of the body 1 has a pin 11 (i.e., a PIN pin of the prior art) that is electrically connected to the power input terminal of the motor inside the body 1 (in this embodiment, a BMC motor, i.e., a plastic-encapsulated motor); the circuit board 6 has a socket 65 that matches the pin 11; the pin 11 is inserted into the socket 65 to achieve the electrical connection between the circuit board 6 and the motor.
[0033] In this embodiment, the pin 11 on the rear end face of the housing 1 is directly electrically connected to the power input terminal (such as the motor winding or control module interface) of the motor inside the housing 1 via a wire. The pin 11 is made of metal and has a needle-like structure. In this embodiment, three pins 11 are configured, such as... Figure 5 As shown, one of the pins is obscured and not shown. When the circuit board 6 is fixed to the positioning protrusion 7 by the screw 9, the pin 11 is precisely aligned and inserted into the socket 65, achieving tight electrical contact through contact or interference fit, or through subsequent electric soldering connection, forming a current transmission channel from the circuit board 6 to the motor.
[0034] External circuits (such as 36V DC or 24V DC) are connected to the positive and negative terminals of power supply line 62, respectively. Figure 3 When necessary, the circuit board 6 contains a three-phase bridge inverter circuit to convert the DC power from the power line into three-phase AC power. The circuit board 6 distributes the three-phase AC power to three pins 11 via three sockets 65 for powering the motor inside the casing 1; the signal lines 63 of the circuit board 6 generally include input lines and output lines (such as...). Figure 3 The input line is used to input control signals to control the operation of the motor. The feedback signals of the motor (such as speed and temperature) can be output in reverse to external display screens and other devices through the output line.
[0035] Reference Figure 3 , Figure 5 and Figure 7 As shown, in some practical applications, the back cover 3 is provided with a cable outlet 31 on its side wall, through which the power cable 62 and / or signal cable 63 extends to the outside of the chamber 4.
[0036] Specifically, a rubber sleeve 8 is provided at the outlet 31. The rubber sleeve 8 includes a first connecting part 81 and a second connecting part 82. The first connecting part 81 has a male plug 811, at least two first wire holes 812 located on the male plug 811, and a first opening 813 extending radially from one side of the first wire holes 812. The second connecting part 82 has a female slot 821 adapted to the male plug 811, at least two second wire holes 822, and a second opening 823 communicating with the second wire holes 822. Each second wire hole 822 penetrates two opposite sidewalls of the female slot 821. The male plug 811 is embedded in the female slot 821 so that the first wire holes 812 and the second wire holes 822 correspond one-to-one and cooperate to form a complete loop-shaped wire hole. The power line 62 and / or signal line 63 are inserted into the corresponding loop-shaped wire hole to achieve a sealed contact between the power line 62 and / or signal line 63 and the rubber sleeve 8. It should be noted that in practical applications, such as Figure 7 As shown, four circular wire holes can be formed, which are used for the sealing installation of the positive and negative power lines and the input and output signal lines, respectively.
[0037] Specifically, a positioning boss 12 is also provided on the end face of the rear end of the fuselage 1 (e.g., Figure 5 The first connecting part 81 also includes a positioning groove 814 adapted to the positioning boss 12.
[0038] Furthermore, the second connecting part 82 also includes a limiting part 824, which protrudes from the end face of the second connecting part 82 away from the second wire hole 822, thereby forming a stepped part 825; when the rear cover 3 is installed on the body 1, the limiting part 824 fits against the inner wall of the rear cover 3, and the end 311 of the wire outlet 31 is pressed against the stepped part 825; the positioning boss 12 is embedded in the positioning groove 814.
[0039] In this embodiment, the cable outlet 31 of the rear cover 3, the rubber cable sleeve 8, and the positioning boss 12 achieve sealed protection and structural positioning of the cable outlet.
[0040] After the power cable 62 / signal cable 63 is led out from the circuit board 6, it passes through the gap between the body 1 and the circuit board 6 to the positioning boss 12. It is then inserted laterally into the first wire hole 812 through the first opening 813 of the first connecting part 81. Then, the female slot 821 of the second connecting part 82 is fitted into the male plug 811, so that the cable is clamped by the loop-shaped wire hole. Finally, the back cover 3 is installed (it should be noted that the second connecting part 82 can also be connected to the back cover 3 first, and then the second connecting part 82 and the back cover 3 can be installed simultaneously). Finally, the end of the cable outlet 31 is pressed against the stepped part 825 of the second connecting part 82 to complete the overall fixation. The rubber cable sleeve 8 is made of elastic material, and the inner diameter of the loop-shaped wire hole is slightly smaller than the outer diameter of the cable. The elastic deformation of the rubber tightly wraps the surface of the cable, preventing dust and moisture outside the chamber 4 from entering the pump body through the cable outlet 31.
[0041] The positioning boss 12 (such as a square protrusion) at the rear end of the body 1 is embedded in the positioning groove 814 of the first connecting part 81 for initial positioning and installation of the first connecting part 81, which can realize radial and circumferential positioning of the first connecting part 81. The limiting part 824 of the second connecting part 82 fits against the inner wall of the rear cover 3, and the step part 825 (the part where the height difference between the limiting part 824 and the main body of the second connecting part 82) forms a surface contact with the end 311 of the cable outlet 31. When the rear cover 3 is fixed to the body 1, the end 311 of the cable outlet 31 applies axial pressure to the step part 825, pressing the rubber cable sleeve 8 between the body 1 and the rear cover 3. The clamping force of the rubber cable sleeve 8 on the cable can also prevent the cable from falling off due to external force (such as dragging during installation).
[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A diaphragm booster pump for an integrated circuit board, comprising: fuselage (1); Pump head (2) is detachably installed at the front end of the body (1); The rear cover (3) is detachably installed at the rear end of the body (1), and a cavity (4) is formed between the body (1) and the rear cover (3). The diaphragm booster pump is characterized in that it further includes: Component (5) is located on the end face of the rear end of the fuselage (1); The circuit board (6) is mounted on the end face of the rear end of the body (1) and is located in the cavity (4); the circuit board (6) has a limiting groove (61) adapted to the component (5), and a power line (62) and a signal line (63) led out from the circuit board (6). The component (5) is at least partially embedded in the limiting groove (61) to achieve radial and / or circumferential positioning of the circuit board (6) relative to the rear end face of the body (1). The power line (62) and / or signal line (63) are at least partially wrapped around the component (5), and their leads extend out of the rear cover (3) and out of the chamber (4).
2. The diaphragm booster pump for an integrated circuit board according to claim 1, characterized in that, The component (5) includes: The first column (51) is at least partially embedded in the limiting groove (61); The second column (52) cooperates with the first column (51) to form a power line winding column; the positive wire of the power line (62) is at least partially wound around the first column (51) and the second column (52); The third column (53) is at least partially embedded in the limiting groove (61); The fourth column (54) cooperates with the third column (53) to form a power line winding column; the negative wire of the power line (62) is at least partially wound around the third column (53) and the fourth column (54).
3. A diaphragm booster pump for an integrated circuit board according to claim 1 or 2, characterized in that, A notch (64) is formed on the circuit board (6) near the component (5), so that the limiting groove (61) is a non-closed arc groove structure.
4. The diaphragm booster pump for an integrated circuit board according to claim 3, characterized in that, The arc length of the limiting groove (61) is greater than half the circumference of the original complete circular hole, so as to restrict the radial movement of the component (5) within the limiting groove (61).
5. The diaphragm booster pump for an integrated circuit board according to claim 3, characterized in that, The power line (62) and signal line (63) are led out from the circuit board (6) on the side near the notch (64).
6. The diaphragm booster pump for an integrated circuit board according to claim 1, characterized in that, The diaphragm booster pump also includes: Positioning protrusions (7), at least two of which are located on the end face of the rear end of the fuselage (1); The circuit board (6) is mounted on the positioning protrusion (7), thereby forming a gap between the circuit board (6) and the end face of the rear end of the body (1).
7. A diaphragm booster pump for an integrated circuit board according to claim 6, characterized in that, The power line (62) and / or signal line (63) are led out from the gap.
8. The diaphragm booster pump for an integrated circuit board according to claim 1, characterized in that, The rear end face of the body (1) has a pin (11) that is electrically connected to the power input terminal of the motor inside the body (1); the circuit board (6) has a socket (65) that matches the pin (11); the pin (11) is inserted into the socket (65) to realize the electrical connection between the circuit board (6) and the motor.
9. A diaphragm booster pump for an integrated circuit board according to claim 1, characterized in that, The rear cover (3) has a cable outlet (31) on its side wall, through which the power cord (62) and / or signal cord (63) extend to the outside of the chamber (4).
10. A diaphragm booster pump for an integrated circuit board according to claim 9, characterized in that, A rubber sleeve (8) is provided at the outlet (31), and the rubber sleeve (8) includes: The first connecting part (81) has a male plug (811), at least two first wire holes (812) located on the male plug (811), and a first opening (813) extending radially from one side of the first wire hole (812). The second connecting part (82) has a female slot (821) adapted to the male plug (811), at least two second wire holes (822), and a second opening (823) communicating with the second wire holes (822); each second wire hole (822) penetrates two opposite sidewalls of the female slot (821); The male plug (811) is embedded in the female slot (821) so that the first wire hole (812) and the second wire hole (822) correspond one-to-one and cooperate to form a complete loop wire hole; the power line (62) and / or signal line (63) are inserted into the corresponding loop wire hole so as to achieve a sealed contact between the power line (62) and / or signal line (63) and the rubber sleeve (8).
11. A diaphragm booster pump for an integrated circuit board according to claim 10, characterized in that, The rear end face of the fuselage (1) is also provided with a positioning boss (12); the first connecting part (81) also includes a positioning groove (814) adapted to the positioning boss (12).
12. A diaphragm booster pump for an integrated circuit board according to claim 11, characterized in that, The second connecting part (82) further includes: The limiting part (824) protrudes from the end face of the second connecting part (82) away from the second wire hole (822), thereby forming a stepped part (825). When the back cover (3) is installed on the body (1), the limiting part (824) fits against the inner wall of the back cover (3), and the end (311) of the cable outlet (31) is pressed against the step part (825); the positioning boss (12) is embedded in the positioning groove (814).