Electric connector, electronic module assembly and pressure sensor

Abstract

The invention relates to the technical field of sensing, in particular to an electric connector, an electronic module assembly and a pressure sensor, which are integrated thin-shell-shaped elements, are made of metal, and comprise a longitudinally extending cylindrical first electric connection part, a second electric connection part and a third electric connection part, due to the fact that at least one first opening groove extending in the longitudinal direction is formed in the periphery, appropriate elasticity is given in the transverse direction; and a longitudinally extending cylindrical second electrical connection part, the longitudinal proximal end of which is connected to the first electrical connection part, and which is endowed with appropriate elasticity in the transverse direction due to at least one longitudinally extending second open slot on the periphery thereof. According to the electric connecting piece, when the terminal is vertically and electrically connected to the circuit board, the circuit board can be fixed to the base at the same time; compared with the prior art in which the circuit board is bonded to the base, long-time curing after dispensing is avoided, and the efficiency is improved. The problem that in the prior art, a circuit board is bonded to a base and cured for a long time after dispensing, and the processing efficiency is affected is solved.

Description

Technical Field

[0001] This invention relates to the field of sensing technology, and more particularly to an electrical connector, an electronic module assembly, and a pressure sensor. Background Technology

[0002] A pressure sensor is a precision electronic component that converts mechanical pressure signals into electrical signals. Its core working principle involves sensing changes in external pressure through a sensitive material (such as a strain gauge, piezoresistive film, or capacitive plate), which in turn causes linear changes in electrical parameters such as resistance and capacitance. These changes are then converted into an output electrical signal by a signal conditioning circuit. Based on different sensing mechanisms, pressure sensors can be classified into various types, including strain gauge, piezoresistive, capacitive, and piezoelectric sensors, and are widely used in industrial automation control, aerospace load monitoring, and blood pressure detection in medical equipment.

[0003] In practical applications, the circuit board of a pressure sensor often needs to be fixed to a base (the superstructure of which is the base) using an adhesive dispensing process to ensure the stability of the mechanical connection and the reliability of the electrical performance. However, the adhesives used in existing technologies (such as epoxy resin and silicone) often require a curing period of several hours to tens of hours after dispensing. Especially in mass production scenarios, the long curing time not only prolongs the overall processing cycle but also leads to reduced equipment turnover and limited production capacity, becoming a key bottleneck restricting the efficient manufacturing of pressure sensors. To address this, we propose an electrical connector, an electronic module assembly, and a pressure sensor. Summary of the Invention

[0004] Based on the technical problems existing in the background technology, the present invention proposes an electrical connector, an electronic module assembly, and a pressure sensor, which has the feature of being able to fix the circuit board to the base while vertically connecting the terminals to the circuit board, thus solving the problem in the prior art where the circuit board is glued to the base and the long curing time after the glue is applied affects the processing efficiency.

[0005] This invention provides the following technical solution: an electrical connector, comprising: The longitudinally extending cylindrical first electrical connection portion is given suitable elasticity in the transverse direction because it has at least one longitudinally extending first opening groove on its periphery. and a longitudinally extending cylindrical second electrical connection portion, the longitudinal proximal end of which is connected to the first electrical connection portion, which is given suitable elasticity in the transverse direction due to having at least one longitudinally extending second opening groove in the periphery.

[0006] The first electrical connection on the lower side of the electrical connector directly fixes the circuit board to the base through a mechanical fastening structure, while the second electrical connection on the upper side forms an electrical connection interface that connects to the terminals, thus establishing a power supply and signal transmission path between the external device and the pressure measurement component. When the external device inputs power supply voltage through the terminals, the electrical connector conducts power to the circuit board, and simultaneously, the pressure signal processed by the circuit board is transmitted back to the terminals through the electrical connector, achieving a bidirectional electrical connection. During this process, the mechanical fastening structure of the first electrical connection simultaneously completes the rigid connection between the circuit board and the base, eliminating the need for an additional adhesive dispensing process.

[0007] Preferably, the first electrical connection portion and the second electrical connection portion are coaxially arranged.

[0008] Preferably, it further includes a transversely extending ring-shaped connecting portion; the inner edge of the connecting portion is connected to the longitudinal proximal end of the first electrical connecting portion, and the outer edge is connected to the longitudinal distal end of the second electrical connecting portion.

[0009] Preferably, the inner edge of the longitudinal distal surface of the connecting portion tapers inward to form a concave portion. The connecting portion is a circumferential connecting portion, used to enable the electrical connector to make electrical contact with the end face of the metallized hole on the circuit board.

[0010] The concave portion is an arched portion or a recessed portion that is raised from the inner edge of the circumferential connecting portion toward the second connecting portion.

[0011] The recessed portion, through its diameter-contracting structural design, ensures electrical contact with both the hole wall and the end face of the circuit board when the electrical connector passes through the metallized hole. The hole wall is connected to the outer wall of the recessed portion via the metallized plating, while the end face achieves planar electrical connection through the end face or extended contacts of the recessed portion. Simultaneously, the connecting portion presses against the end face of the circuit board, providing mechanical support while ensuring contact pressure between the recessed portion and the hole wall and end face through compression.

[0012] Preferably, one of the longitudinally extending first opening slots has the same circumferential angle as one of the longitudinally extending second opening slots and is vertically connected.

[0013] Preferably, the first opening groove faces downward and completely penetrates the first electrical connection portion, and the second opening groove faces upward and completely penetrates the second electrical connection portion.

[0014] An electronic module assembly, comprising: Multiple terminals with one end facing the longitudinal distal end; A laterally extending circuit board having a plurality of metallized holes corresponding one-to-one with the plurality of said terminals; A laterally extending base having blind holes corresponding one-to-one with the plurality of said terminals and facing the longitudinal proximal end; The circuit board is fixed to the base on the longitudinally distal side, and its first electrical connection portion passes through the corresponding metallized hole and is fixed in the corresponding blind hole on the longitudinally distal side; the longitudinally distal end of the terminal is inserted into and electrically connected to the corresponding second electrical connection portion; the outer wall of the first electrical connection portion is elastically electrically contacted with the corresponding metallized hole.

[0015] Preferably, the first electrical connection portion passes through the metallized hole of the circuit board and is inserted into the blind hole locked in the base, and the first electrical connection portion makes electrical contact with the hole wall of the metallized hole.

[0016] By inserting and locking the first electrical connection into a blind hole in the base after passing through a metallized hole in the circuit board, the dual functions of mechanical fixation and electrical connection are achieved. The shape of the first electrical connection part forms a suitable insertion and removal structure with the metallized hole and the blind hole in the base. When inserted, the outer wall of the first electrical connection part makes close contact with the metal-plated wall of the metallized hole, forming a conductive path. At the same time, the interference fit or threaded design locks the circuit board to the base rigidly. In this process, the metallized hole serves as a passage for the electrical connection and forms an electrical connection with the first electrical connection part through the metal layer of the hole wall, while the blind hole in the base provides mechanical positioning and fastening support, so that the circuit board fixation and electrical connection are completed simultaneously.

[0017] Preferably, the first electrical connection portion is tightly fitted into the blind hole, and the electrical connector includes a first opening groove that penetrates the first electrical connection portion and the second electrical connection portion in the longitudinal height (it may not penetrate if the bottom of the first electrical connection portion is closed), so that the first electrical connection portion is squeezed towards the center by the inner wall of the metallized hole and the blind hole and has a certain elasticity.

[0018] When electrical connectors are inserted into blind holes and metallized holes, the slot structure allows its outer wall to expand or contract slightly, adaptively matching the inner diameter tolerances of the blind holes and metallized holes. The frictional force of the tight fit and the elastic clamping force secure the circuit board to the base. Simultaneously, the outer wall of the electrical connector and the wall of the metallized hole form a tight electrical contact due to elastic compression, ensuring the reliability of the current conduction path. The through-hole design of the slot gives the electrical connector elastic deformation capability, allowing it to maintain the stability of the mechanical connection during the tight fit while enhancing the tightness of the electrical contact through elastic compression.

[0019] Preferably, the first electrical connection portion is threaded into the blind hole, and a force-bearing portion for receiving tightening force is formed on the inner or outer wall of the electrical connector. The outer wall of the electrical connector may be flat, and the inner wall may be convex.

[0020] After the electrical connector is inserted into the blind hole of the base and the metallized hole of the circuit board, the equipment applies torque to the force-bearing part, causing the electrical connector to engage with the threaded structure on the inner wall of the blind hole. The mechanical engagement force of the threads rigidly fixes the circuit board to the base. If the outer wall of the electrical connector is flat, the inner convex force-bearing part (such as an internal hexagonal groove or Phillips head groove) can be clamped and tightened by the equipment, causing the electrical connector to be screwed into the blind hole as a whole. If the force-bearing part is located on the outer wall (such as an external thread with a wrench), the equipment directly acts on the force-bearing part on the outer wall, causing the electrical connector to form a tight connection with the internal thread of the blind hole. During this process, the outer wall of the electrical connector maintains electrical contact with the wall of the metallized hole, achieving simultaneous completion of circuit conduction and mechanical fixation.

[0021] Preferably, the second electrical connection portion is cylindrical, and the lower side of the terminal is accommodated within the second electrical connection portion and makes electrical contact with the inner wall of the second electrical connection portion.

[0022] When the cylindrical core inside the terminal is inserted into the second electrical connection part, the inner wall of the second electrical connection part and the outer wall of the core form a tight physical contact. Electrical conductivity between the two is ensured by elastic clamping, conductive material plating, or a press-fit structure. The internal structure of the second electrical connection part is designed as a socket or slot that matches the shape of the cylindrical core. During insertion, elastic deformation generates clamping force, causing the core to fit tightly against the metal layer of the inner wall of the second electrical connection part. This establishes a power and signal transmission channel between the external device and the circuit board. Simultaneously, the insertion of the terminal and the fixing action of the first electrical connection part to the circuit board are independent yet coordinated, completing the assembly of the entire electrical connection system.

[0023] Preferably, the upper part of the second electrical connection portion has at least one circumferentially spaced second opening groove, so that the second electrical connection portion has a certain elasticity when pressed outward by the outer wall of the terminal. When the columnar core of the terminal is inserted into the second electrical connection portion, the groove design allows the outer wall of the connection portion to undergo elastic deformation along the circumference, tightly wrapping the outer wall of the core portion through elastic clamping force. This elastic deformation capability allows the connection portion to adaptively match the dimensional tolerance of the core portion, while the elastic arm formed by the groove applies uniform radial pressure to the core portion, ensuring a tight fit of the conductive contact surfaces.

[0024] Preferably, the first electrical connection part and the second electrical connection part are an integral cylindrical structure, and the inner diameter of the first electrical connection part is slightly larger than the outer diameter of the terminal, and the outer diameter of the second electrical connection part is slightly smaller than the inner diameter of the blind hole.

[0025] Preferably, the longitudinal distal end of the first electrical connector tapers inward to form a tapered guide portion. This facilitates insertion into the metallized holes of the circuit board and the blind holes of the base. When inserted into the metallized holes of the circuit board and the blind holes of the base, the inclined surface of the tapered guide portion automatically corrects the insertion angle, reduces insertion resistance, and ensures that the electrical connector is smoothly inserted along the central axis, avoiding scratching of the hole walls or poor contact due to misalignment.

[0026] Preferably, the longitudinal proximal end of the second electrical connection expands outward to form a flared opening. This facilitates the inward insertion of the columnar core at one end of the terminal into the second electrical connection. This outwardly expanding, flared structure forms a flared inlet. When the columnar core of the terminal is inserted inward, the flared structure guides the core through the expanding opening for precise alignment, and the outwardly expanding bevel counteracts radial deviations during insertion, allowing the core to smoothly embed into the conductive contact area of ​​the second electrical connection.

[0027] A pressure sensor comprising the aforementioned electronic module assembly.

[0028] It also includes electrical connectors and pressure interfaces. The electrical connectors are used for mechanical connection with external equipment. An installation cavity is formed between the electrical connectors and the pressure interface, and at least one pressure measuring component is provided in the installation cavity. The pressure measuring component has a pressure sensing element and a processing circuit. The pressure sensing element includes a diaphragm and a measuring circuit. The processing circuit is a conditioning circuit to make the signal linear. It is usually carried by a circuit board. The pressure channel connects / couples at least one pressure sensing surface of the pressure sensing element.

[0029] The electrical connector is provided with a plurality of terminals, and an electrical connector is provided between the terminals and the pressure measuring component. One end of the electrical connector is provided with a first electrical connection portion for fixing the circuit board to the base; the other end is provided with a second electrical connection portion for connecting to the terminals.

[0030] The pressure interface is provided with at least one pressure inlet channel for introducing pressure medium into the mounting cavity.

[0031] External pressure medium is transmitted to the mounting cavity through the pressure inlet channel of the pressure interface, acting on the diaphragm of the pressure-sensing element and causing it to deform. This deformation drives the measuring circuit to output an electrical signal. This signal is conditioned into a linear signal by the processing circuit on the circuit board and then transmitted to the terminals of the electrical connector through the electrical connector. Finally, the terminals complete the electrical connection and signal exchange with external devices. During this process, the first electrical connection part of the electrical connector fixes the circuit board to the base, and the second electrical connection part mates with the terminals. The electrical connector combines circuit board fixation and electrical connection functions, completely eliminating the curing process of traditional dispensing and significantly improving assembly efficiency.

[0032] The mounting cavity formed by the electrical connector and the pressure interface provides a protective space for the pressure measurement component, and the pressure channel is precisely coupled to the pressure sensing surface to ensure reliable transmission of the pressure signal.

[0033] Preferably, the base includes upper and lower metal layers fixedly connected; one of the electrical connectors extends into the metal layer and is electrically connected to a metal pressure port via a first electrical connection portion, thereby grounding the pressure port. When the electrical connector is inserted, the first electrical connection portion penetrates the insulating layer and extends into the lower metal layer, establishing a current path through electrical contact with the metal layer; simultaneously, the metal layer is electrically connected to the metal pressure port, allowing the current conducted by the electrical connector to flow through the metal layer to the pressure port, ultimately achieving the grounding effect of the sensor's metal shell.

[0034] Preferably, the pressure interface contacts and is electrically connected to the base via a support surface. The conductive properties of the support surface or its adherence to the base's metal layer create an electrical conduction path. When the pressure interface is assembled with the base, the support surface serves both as a mechanically positioned contact structure, ensuring a fixed relative position between the pressure interface and the base, and as an electrical connection to the lower metal layer of the base via a metal contact surface or conductive coating. This allows the pressure interface to form a complete current loop through the base's metal layer, the electrical connector, and the pressure measurement components, while simultaneously meeting the grounding requirements of the pressure interface.

[0035] Preferably, the pressure measuring component is surrounded by a frame, which is mounted on the circuit board and filled with protective gel to protect the pressure measuring component. After curing, the protective gel forms an elastic buffer layer that tightly wraps the circuit elements and pressure-sensing elements of the pressure measuring component. At the same time, the frame acts as a physical support framework, limiting the overflow of the gel and providing structural support, so that the protective layer and the circuit board form an integrated protective system.

[0036] This invention provides an electrical connector, an electronic module assembly, and a pressure sensor, integrating terminal electrical connection with circuit board fixing functions. The circuit board is directly locked to a base using a mechanical fastener structure, eliminating the need for adhesive dispensing and curing processes. This eliminates the curing time required in traditional processes and avoids the risk of poor contact due to incomplete adhesive curing. The electrical connector, while vertically connecting the terminals to the circuit board, simultaneously secures the circuit board to the base; compared to existing technologies, it avoids prolonged curing after adhesive dispensing, improving production efficiency. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the pressure sensor structure of the present invention.

[0038] Figure 2 This is a perspective view of the electrical connector of the present invention.

[0039] Figure 3 This is a schematic cross-sectional view of the electrical connector of the present invention.

[0040] Figure 4 For the present invention Figure 1 An enlarged diagram of A in the diagram.

[0041] In the figure: 1. First electrical connection part; 1a. First opening groove; 2. Second electrical connection part; 2a. Second opening groove; 3. Metallized hole; 4. Extension part; 5. Tapered guide part; 6. Horn-shaped opening; 7. Recessed part; 8. Connection part; 9. Circuit board; 10. Base; 11. Blind hole; 12. Terminal; 13. Pressure interface; 14. Electrical connector; 15. Pressure measuring assembly; 16. Pressure introduction channel; 17. Support surface; 18. Frame; 19. Protective gel. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] like Figure 1-4 As shown, the present invention provides a technical solution: An electronic module assembly includes: a plurality of terminals 12 with one end facing the longitudinal distal end; The horizontally extending circuit board 9 has a plurality of metallized holes 3 corresponding one-to-one with a plurality of terminals 12; the metallized holes 3 form a ring of extensions 4 on the upper surface to increase the electrical contact area with the electrical connectors.

[0044] The laterally extending base 10 has blind holes 11 corresponding one-to-one with multiple terminals 12 and facing the longitudinal proximal end. Mechanically, electrical connectors firmly bond the circuit board 9 to the base 10, ensuring the stability and durability of the component; in terms of electrical performance, the increased contact area and flexible electrical contact design reduce contact resistance, reduce signal transmission loss and heat generation, and improve circuit transmission efficiency and stability. Multiple electrical connectors secure the circuit board 9 to the base 10 along its longitudinal distal end. The first electrical connection portion 1 passes through the corresponding metallized hole 3 along its longitudinal distal end and is then fixed within the corresponding blind hole 11. The longitudinal distal end of the terminal 12 is inserted into and electrically connected to the corresponding second electrical connection portion 2. The outer wall of the first electrical connection portion 1 makes elastic electrical contact with the corresponding metallized hole 3. This standardized connection method facilitates assembly and maintenance. Each component performs its specific function while working closely together, resulting in excellent performance in both electrical connection and mechanical fixation for the electronic module assembly, making it suitable for various electronic equipment scenarios.

[0045] An electrical connector is electrically connected to a pressure measuring assembly 15 to obtain power from an external device and output signals to the external device. Specifically, it is used to electrically connect a terminal 12 to a circuit board 9. One end of the electrical connector is provided with a first electrical connection portion 1 for fixing the circuit board 9 to a base 10; the other end is provided with a second electrical connection portion 2 for connecting to the terminal 12.

[0046] The first electrical connection part 1 on the lower side of the electrical connector directly fixes the circuit board 9 to the base 10 through a mechanical fastening structure, while the second electrical connection part 2 on the upper side forms an electrical connection interface that is connected to the terminal 12, thereby establishing a power supply and signal transmission path between the external device and the pressure measurement component 15. When the external device inputs power supply voltage through the terminal 12, the electrical connector conducts power to the circuit board 9, and at the same time, the pressure signal processed by the circuit board 9 is transmitted in reverse through the electrical connector to the terminal 12, realizing a bidirectional electrical connection. During this process, the mechanical fastening structure of the first electrical connection part 1 simultaneously completes the rigid connection between the circuit board 9 and the base 10, without the need for an additional adhesive dispensing process.

[0047] The first electrical connection part 1 of the electrical connector passes through the metallized hole 3 of the circuit board 9 and is inserted into the blind hole 11 locked in the base 10, and the first electrical connection part 1 makes electrical contact with the hole wall of the metallized hole 3.

[0048] By inserting the first electrical connection part 1 through the metallized hole 3 of the circuit board 9 and then locking it into the blind hole 11 of the base 10, the dual functions of mechanical fixation and electrical connection are achieved. The shape of the first electrical connection part 1 forms a suitable insertion and removal structure with the metallized hole 3 and the blind hole 11 of the base 10. When inserted, the outer wall of the first electrical connection part 1 is in close contact with the metal-plated hole wall of the metallized hole 3 to form a conductive path. At the same time, the circuit board 9 is rigidly fixed to the base 10 by using an interference fit or threaded design to lock with the inner wall of the blind hole 11. In this process, the metallized hole 3 serves as a passage for the electrical connector and forms an electrical connection with the first electrical connection part 1 through the metal layer of the hole wall, while the blind hole 11 of the base 10 provides mechanical positioning and fastening support, so that the fixation of the circuit board 9 and the electrical connection are completed simultaneously. No adhesive is needed, completely eliminating the hours-long curing process after dispensing, significantly shortening the processing cycle and enabling immediate installation and fixation of the circuit board 9 and the base 10; the direct electrical contact between the metallized hole 3 and the first electrical connection part 1 avoids the insulation risks caused by incomplete adhesive curing, significantly improving the reliability of the electrical connection.

[0049] The electrical connector is fixed to the blind hole 11 of the base 10 by a tight fit. The electrical connector includes a first opening groove 1a that penetrates the first electrical connection part 1 and the second electrical connection part 2 in the longitudinal height, so as to give it good circumferential elasticity when it mates with the blind hole 11 of the base 10 and the metallized hole 3 of the circuit board 9.

[0050] When the electrical connector is inserted into the blind hole and the metallized hole 3, the slot structure allows its outer wall to expand or contract slightly, adaptively matching the inner diameter tolerances of the blind hole 11 and the metallized hole 3. The frictional force of the tight fit and the elastic clamping force fix the circuit board 9 to the base 10. Simultaneously, the outer wall of the electrical connector and the wall of the metallized hole 3 form a tight electrical contact due to elastic compression, ensuring the reliability of the current conduction path. The through-hole design of the slot gives the electrical connector elastic deformation capability, allowing it to maintain the stability of the mechanical connection during the tight fit process while enhancing the tightness of the electrical contact through elastic compression. Utilizing the circumferential elasticity provided by the slot solves the problem of insertion and removal difficulties caused by tolerances during tight-fit installation, enabling the electrical connector to be quickly inserted and positioned, improving assembly efficiency.

[0051] The electrical connector is fixed to the blind hole 11 of the base 10 by a threaded engagement. A force-bearing part for receiving tightening force is formed on the inner or outer wall of the electrical connector. The outer wall of the electrical connector can be flat, and the inner wall can be convex.

[0052] After the electrical connector is inserted into the blind hole 11 of the base 10 and the metallized hole 3 of the circuit board 9, torque is applied to the force-bearing part by the equipment, causing the threaded structure of the electrical connector and the inner wall of the blind hole 11 to engage with each other. The mechanical engagement force of the threads rigidly fixes the circuit board 9 to the base 10. If the outer wall of the electrical connector is flat, the inner convex force-bearing part (such as an internal hexagonal groove, cross groove, etc.) can be clamped and tightened by the equipment, driving the electrical connector to be screwed into the blind hole 11 as a whole; if the force-bearing part is located on the outer wall (such as an external thread engaging with a wrench), the equipment directly acts on the force-bearing part on the outer wall, so that the electrical connector and the internal thread of the blind hole 11 form a tight connection. During this process, the outer wall of the electrical connector maintains electrical contact with the wall of the metallized hole 3, realizing the simultaneous completion of circuit conduction and mechanical fixation.

[0053] The second electrical connection portion 2 of the electrical connector is inserted and electrically connected by the columnar core at one end of the inner side of the terminal 12. When the columnar core inside the terminal 12 is inserted into the second electrical connection portion 2, the inner wall of the second electrical connection portion 2 and the outer wall of the core form a tight physical contact. The electrical conductivity between the two is ensured by elastic clamping, conductive material plating, or a pressing structure. The internal structure of the second electrical connection portion 2 is designed as a socket or groove that matches the shape of the columnar core. During the insertion process, the clamping force is generated by elastic deformation, so that the core and the metal layer of the inner wall of the second electrical connection portion 2 are tightly attached, thereby establishing a power and signal transmission channel between the external device and the circuit board 9. At the same time, the insertion action of the terminal 12 and the fixing action of the first electrical connection portion 1 of the electrical connector to the circuit board 9 are independent of each other and work together to complete the assembly of the entire electrical connection system.

[0054] The upper part of the second electrical connection portion has at least one circumferentially spaced first opening groove 2a to enhance circumferential elasticity when mating with the core. When the columnar core of the terminal 12 is inserted into the second electrical connection portion 2, the groove design allows the outer wall of the connection portion to undergo elastic deformation along the circumference, tightly wrapping the outer wall of the core through elastic clamping force. This elastic deformation capability allows the connection portion to adaptively match the dimensional tolerances of the core, while the elastic arm formed by the groove applies uniform radial pressure to the core, ensuring a tight fit of the conductive contact surfaces.

[0055] The connection between the first electrical connection part 1 and the second electrical connection part 2 of the electrical connector is provided with a recessed part 7 and a connecting part 8. The recessed part 7 is used to make the electrical connector simultaneously make electrical contact with the end face of the circuit board 9 and the hole wall of the metallized hole 3, and the connecting part 8 is used to make the electrical connector make electrical contact with the end face of the metallized hole 3 of the circuit board 9.

[0056] The recessed portion 7, through its diameter-contracting structural design, allows the electrical connector to simultaneously make electrical contact with both the hole wall of the metallized hole 3 and the end face of the circuit board 9 when the electrical connector passes through the metallized hole 3 of the circuit board 9. The hole wall is connected to the outer wall of the recessed portion 7 through the metallized plating layer, while the end face achieves planar electrical connection through the end face or extended contacts of the recessed portion 7. At the same time, the connecting portion 8 presses against the end face of the circuit board 9, providing mechanical support while ensuring the contact pressure between the recessed portion 7 and the hole wall and end face through compression.

[0057] The first electrical connector 1 has a tapered guide 5 at one end where it is inserted into the blind hole 11. The tapered guide 5 has an inwardly inclined constricted structure, which facilitates insertion into the metallized hole 3 of the circuit board 9 and the blind hole 11 of the base 10. When inserting into the metallized hole 3 of the circuit board 9 and the blind hole 11 of the base 10, the inclined surface of the tapered guide 5 automatically corrects the insertion angle, reduces insertion resistance, and ensures that the electrical connector is smoothly inserted along the central axis, avoiding scratching of the hole wall or poor contact due to deflection.

[0058] The second electrical connection part 2 has a flared opening 6 at one end where it connects to the terminal 12. The flared opening 6 is an outwardly expanding, flared structure that facilitates the inward insertion of the columnar core of the inner end of the terminal 12 into the second electrical connection part 2. This outwardly expanding, flared structure forms a flared inlet. When the columnar core of the terminal 12 is inserted inward, the flared structure guides the core to precise alignment through the expanding opening, and the outwardly expanding bevel counteracts radial deviation during insertion, allowing the core to smoothly embed into the conductive contact area of ​​the second electrical connection part 2.

[0059] The bidirectional guiding design fundamentally solves the alignment problem in the assembly process. The constriction and outward-folding structures provide self-guiding functions for the insertion of electrical connectors into the base 10 and the insertion of terminals 12 into the electrical connectors, respectively, avoiding the tedious steps of manual calibration or mechanical positioning and significantly improving assembly efficiency.

[0060] The base 10 includes upper and lower metal layers fixedly connected; at least one electrical connector extends into the metal layer and is electrically connected to the metal pressure port 13, thereby grounding the metal shell of the sensor. When the electrical connector is inserted, the first electrical connection part 1 penetrates the insulating layer and extends into the lower metal layer, establishing a current path through electrical contact with the metal layer; simultaneously, the metal layer is electrically connected to the metal pressure port 13, allowing the current conducted by the electrical connector to flow through the metal layer to the pressure port 13, ultimately achieving the grounding effect of the sensor's metal shell.

[0061] A pressure sensor comprising the aforementioned electronic module assembly.

[0062] The pressure sensor also includes an electrical connector 14 and a pressure interface 13. The electrical connector 14 is used for mechanical connection with external equipment. An installation cavity is formed between the electrical connector 14 and the pressure interface 13, and at least one pressure measuring component 15 is provided in the installation cavity. The pressure measuring component has a pressure sensing element and a processing circuit. The pressure sensing element includes a diaphragm and a measuring circuit, and is usually carried by a circuit board 9. The pressure channel connects / couples at least one pressure sensing surface of the pressure sensing element.

[0063] The electrical connector 14 of the pressure sensor is provided with a plurality of terminals 12, and an electrical connector is provided between the terminals 12 and the pressure measuring assembly 15. One end of the electrical connector is provided with a first electrical connection part 1 for fixing the circuit board 9 to the base 10; the other end is provided with a second electrical connection part 2 for connecting to the terminals 12. The pressure port 13 is provided with at least one pressure inlet channel 16 for introducing pressure medium into the installation cavity.

[0064] External pressure medium is transmitted to the mounting cavity through the pressure inlet channel 16 of the pressure interface 13, acting on the diaphragm of the pressure-sensing element to cause deformation. The deformation of the diaphragm drives the measuring circuit to output an electrical signal. This signal is conditioned into a linear signal by the processing circuit on the circuit board 9 and then transmitted to the terminal 12 of the electrical connector 14 through the electrical connector. Finally, the terminal 12 completes the electrical connection and signal interaction with the external device. In this process, the first electrical connection part 1 of the electrical connector fixes the circuit board 9 to the base 10, and the second electrical connection part 2 mates with the terminal 12. The electrical connector has both the function of fixing the circuit board 9 and the function of electrical connection, completely eliminating the curing process of traditional dispensing process and significantly improving assembly efficiency.

[0065] The mounting cavity formed by the electrical connector 14 and the pressure interface 13 provides a protective space for the pressure measurement component 15, and the pressure channel is precisely coupled to the pressure sensing surface to ensure reliable transmission of the pressure signal.

[0066] The pressure port 13 contacts and is electrically connected to the base 10 via the support surface 17. The pressure port 13 utilizes the conductivity of the support surface 17 or its bonding design with the metal layer of the base 10 to form an electrical conduction path. When the pressure port 13 is assembled with the base 10, the support surface 17 serves both as a mechanical positioning abutment structure, ensuring the relative position of the pressure port 13 and the base 10 is fixed, and as an electrical connection to the lower metal layer of the base 10 via the metal contact surface or conductive coating. This allows the pressure port 13 to form a complete current loop through the metal layer of the base 10, the electrical connector, and the pressure measuring assembly 15, while simultaneously meeting the grounding requirements of the pressure port 13.

[0067] A frame 18 is provided around the pressure measuring component 15. The frame 18 is mounted on the circuit board 9 and filled with protective gel 19 to protect the pressure measuring component 15. After curing, the protective gel 19 forms an elastic buffer layer that tightly wraps the circuit elements and pressure-sensing elements of the pressure measuring component 15. At the same time, the frame 18 acts as a physical support frame, limiting the overflow of the gel and providing structural support, so that the protective layer and the circuit board 9 form an integrated protective system.

[0068] The electrical connector of the present invention can simultaneously secure the circuit board 9 to the base 10 when the terminal 12 is electrically connected to the circuit board 9; compared with the prior art, it can avoid long curing time after dispensing and improve production efficiency.

[0069] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An electrical connector, characterized in that, It is a single, thin-shell-shaped component made of metal, comprising: The longitudinally extending cylindrical first electrical connection portion (1) is given suitable elasticity in the transverse direction because it has at least one longitudinally extending first opening groove (1a) on its periphery; and a longitudinally extending cylindrical second electrical connection portion (2), the longitudinal proximal end of which is connected to the first electrical connection portion (1), which is given suitable elasticity in the transverse direction due to having at least one longitudinally extending second opening groove (2a) on its periphery.

2. An electrical connector according to claim 1, characterized in that: The first electrical connection part (1) and the second electrical connection part (2) are coaxially arranged.

3. An electrical connector according to claim 2, characterized in that: It also includes a transversely extending ring connection (8); the inner edge of the connection (8) is connected to the longitudinal proximal end of the first electrical connection (1), and the outer edge is connected to the longitudinal distal end of the second electrical connection (2).

4. An electrical connector according to claim 3, characterized in that: The inner edge of the longitudinal distal surface of the connecting part (8) contracts inward to form a concave part (7).

5. The electrical connector according to any one of claims 1 to 4, characterized in that: One of the longitudinally extending first opening slots (1a) has the same circumferential angle as one of the longitudinally extending second opening slots (2a) and is vertically connected.

6. An electrical connector according to claim 5, characterized in that: The first opening groove (1a) completely penetrates the first electrical connection part (1) with its opening facing downwards, and the second opening groove (2a) completely penetrates the second electrical connection part (2) with its opening facing upwards.

7. The electrical connector according to any one of claims 1 to 4, characterized in that: The longitudinal distal end of the first electrical connection (1) contracts inward to form a tapered guide (5).

8. The electrical connector according to any one of claims 1 to 4, characterized in that, The longitudinal proximal end of the second electrical connection (2) expands outward to form a trumpet-shaped opening (6).

9. An electronic module assembly, characterized in that, include: Multiple terminals (12) with one end facing the longitudinal distal end; A laterally extending circuit board (9) has a plurality of metallized holes (3) corresponding one-to-one with the plurality of terminals (12). The laterally extending base (10) has blind holes (11) corresponding one-to-one with the plurality of said terminals (12) and facing the longitudinal proximal end. And a plurality of electrical connectors according to any one of claims 1 to 8, wherein the circuit board (9) is fixed to the base (10) on the longitudinally distal side, wherein the first electrical connection portion (1) passes through the corresponding metallized hole (3) and is fixed in the corresponding blind hole (11) on the longitudinally distal side; the longitudinally distal end of the terminal (12) is inserted into and electrically connected to the corresponding second electrical connection portion (2); the outer wall of the first electrical connection portion (1) is elastically electrically contacted with the corresponding metallized hole (3).

10. A pressure sensor, characterized in that, Includes the electronic module assembly according to claim 9.

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