Connector with stable connection and device

Abstract

The utility model relates to a connector and a device with stable connection, which are characterized in that a tin flowing groove is arranged on the inner wall of a shell and corresponds to a tin soldering point on a PCB (printed circuit board), so that tin soldering on the tin soldering point is squeezed into the tin flowing groove in the process of inserting the PCB into the shell, the contact area of the tin soldering and the shell is increased, the contact surface is more, and the connection stability is improved. According to the utility model, the connection between the housing and the PCB is more stable, the awakening of the connector is more stable and smoother, the strength of the connector is higher, the connection between the PCB and the housing is facilitated, the realization of the principle of circuit design is more convenient, the yield of the connector is improved, and the safety is also improved. And the hollow parts are arranged between the outer convex parts, so that glue injection of the connector is facilitated, and more convenient arrangement is provided for placement of electronic elements on the PCB. Fixing buckles are arranged on the two sides of the shell, so that connection and fixation of the connector and insertion equipment are facilitated, and grounding of the connector is also facilitated.

Description

Technical Field

[0001] This utility model relates to the field of electronic connectors, and in particular to a connector and device with stable connection. Background Technology

[0002] As a critical component for signal and power transmission in electronic devices, the reliability of the soldering between the connector's shell and the PCB board directly affects the device's performance and lifespan. Traditional connector shells are typically surface-mount soldered to the PCB board via solder feet or pads. Existing connectors are prone to solder overflow, and their solder feet are mostly rigid through-hole or planar surface-mount structures. During soldering, thermal expansion or mechanical pressure can cause solder paste between the solder feet and the PCB pads to be squeezed out, forming solder balls. This problem is particularly pronounced in high-temperature reflow soldering processes, where overflowing solder balls can cause short circuits between adjacent solder joints, reducing product yield and safety. Simultaneously, mechanical strength is insufficient. Traditional solder foot designs often rely on a single solder surface or point-to-point fixation, and the connection between the shell and the solder feet lacks stress-absorbing structures. When the connector is subjected to insertion / extraction forces, vibration, or temperature changes, the solder joints are prone to cracking or even breakage, leading to poor contact or detachment. Furthermore, in pursuit of miniaturization, some connectors have reduced the number of solder feet, further weakening the overall connection strength. Some existing solutions attempt to increase strength by increasing the number of solder feet or thickening the solder pads, but this increases material costs and PCB layout space, and it is difficult to completely solve the problem of solder overflow. Another solution is to add a snap-fit ​​structure to the shell, but the complex integrated design increases the difficulty of injection molding and is not conducive to mass production.

[0003] Therefore, there is an urgent need for a new type of connector structure that can optimize the solder joint design to suppress solder overflow, improve the soldering strength through structural innovation, and at the same time take into account cost and process compatibility. Utility Model Content

[0004] The technical problem this invention aims to solve is that existing connectors are prone to poor contact after repeated insertion and removal; and their mechanical strength is insufficient. To address these shortcomings of the prior art, this invention provides a connector and device with stable connection.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A connector with stable connection is constructed, including a housing, an insertion port formed on one side of the housing, and an internal accommodating cavity. It also includes a PCB board inserted into the accommodating cavity from the insertion port. The PCB board is provided with pins, and the housing has pin windows corresponding to the pins. When the PCB board is inserted into the housing, the pins are positioned at the pin windows. The PCB board has multiple sets of solder points, and the inner wall of the housing has at least one set of solder flow grooves corresponding to each set of solder points. The solder on the solder points is squeezed into the solder flow grooves during the insertion of the PCB board into the accommodating cavity.

[0007] Preferably, the outer casing includes a smooth portion and an outwardly protruding portion connected to the smooth portion, the outwardly protruding portion being close to the insertion port, and the thickness of the outwardly protruding portion being greater than the thickness of the smooth portion.

[0008] Preferably, the solder flow groove is placed on the inner wall of the protruding part, and two sets of solder points are provided on both the upper and lower sides of the PCB board. The two sets of solder points are located at the two ends of the upper and lower sides, and the inner wall of the protruding part is provided with at least one set of solder flow grooves corresponding to each set of solder points.

[0009] Preferably, the tin flow groove has a square or trapezoidal cross-section, with the shorter base of the trapezoid being closer to the PIN pin window.

[0010] Preferably, the width of the solder joint is greater than the sum of the widths of the multiple sets of solder troughs corresponding to it.

[0011] Preferably, the end of the solder flow groove extends to the smooth portion, the middle of the protruding portion is provided with a hollow portion, and the protruding portions on both sides of the hollow portion are provided with solder flow grooves.

[0012] Preferably, the outer casing is provided with fixing buckles on both sides, the top of the outer casing is provided with reinforcing ribs, and the upper end of the PCB board is provided with a recessed portion corresponding to the reinforcing ribs.

[0013] Preferably, the PCB board is provided with a limiting angle, so that when the limiting angle contacts the outer shell, the PCB board cannot be further inserted into the outer shell.

[0014] Construct a device that includes a stable connector as described above.

[0015] The beneficial effects of this utility model are as follows: By setting a solder flow groove on the inner wall of the housing, which corresponds to the solder points on the PCB board, the solder on the solder points is squeezed into the solder flow groove during the insertion of the PCB board into the housing. This increases the contact area between the solder and the housing, resulting in a more stable connection between the housing and the PCB board, smoother and more stable connector activation, and greater connector strength. It also facilitates the connection between the PCB board and the housing, and makes it easier to implement the circuit design principle, thereby improving the connector yield and safety. The hollowed-out portions between the protruding parts facilitate adhesive injection into the connector and provide a more convenient arrangement for the placement of electronic components on the PCB board. The fixing clips on both sides of the housing facilitate the connection and fixation of the connector to the insertion device, and also facilitate the grounding of the connector. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the connector structure according to a preferred embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the outer shell of a preferred embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the outer shell of a preferred embodiment of the present invention from another direction;

[0020] Figure 4 This is a schematic diagram of the PCB board structure of a preferred embodiment of the present invention. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of this utility model. Obviously, the described embodiments are some, but not all, embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] A preferred embodiment of this utility model provides a connector with stable connection; such as... Figures 1-4 As shown, the device includes a housing 30 with an insertion hole 307 on one side and an internal accommodating cavity 300. It also includes a PCB board 20 inserted into the accommodating cavity 300 through the insertion hole 307. Multiple sets of pins 202 are provided on both the top and bottom of the PCB board. Pin windows 301 are provided on both sides of the housing corresponding to the pins, allowing the pins to protrude from the housing. A raised reinforcing rib 303 is provided on the top of the housing, and a recessed portion 200 is provided on the top of the PCB board 20 corresponding to the reinforcing rib. The reinforcing rib being placed within the recessed portion limits the PCB board and prevents the top of the housing from bulging and breaking. Additionally, fixing clips 302 are provided on the left and right sides of the housing. When a connector is inserted into the socket, the fixing clips prevent the connector from swinging left and right and also allow grounding with the device's female connector. For example, hooks on both sides of a mobile phone socket correspond to the fixing clips 302, preventing left and right swinging for better fixation and also achieving better grounding.

[0023] Specifically, such as Figures 1-3As shown, the PCB board 20 has two sets of solder points 201 on its upper and lower surfaces, for a total of four sets of solder points. The outer shell 300 extends towards the insertion port 307 to form an outward protrusion 304, which corresponds to the solder points. Therefore, there are also four sets of outward protrusions. When the PCB board is inserted into the outer shell, the inner wall of the outward protrusion contacts the solder points. To increase the strength of the outer shell, the thickness of the outward protrusion can be greater than the thickness of the smooth part 309, and the outward protrusion and the smooth part are integrally formed. At the same time, to achieve better soldering, a solder flow groove 305 is provided on the inner wall of the outward protrusion. The solder flow groove corresponds to the solder points. When the PCB board is inserted into the outer shell, the solder on the solder points is squeezed into the solder flow groove, avoiding solder overflow that would reduce the yield and save costs. Solder connects the PCB board and the housing in the solder bath, thus providing positioning and contact. This makes the connection between the housing and the PCB board more stable and the connector stronger. In addition, the solder bath provides more contact surface between the solder and the housing, making the connector wake-up smoother and more stable, which is more conducive to the realization of circuit design.

[0024] Furthermore, such as Figures 1-3 As shown, the solder troughs on each set of protrusions 304 can be configured in multiple groups. When multiple groups are configured, the contact surface will be further increased, resulting in better bonding stability between the outer casing and the PCB board. The shape of the solder troughs can also be set as needed, such as a rectangular or trapezoidal cross-section. When set as a trapezoid, the base of the longer side is closer to the insertion port, allowing the solder to be squeezed into the solder trough better. The solder troughs can also be tilted, which will not be elaborated here. By setting solder troughs on the inner wall of the protrusions, the solder on the solder points is squeezed into the solder troughs during the insertion of the PCB board into the outer casing, thereby increasing the contact surface between the solder and the outer casing, making the connection between the PCB board and the outer casing more stable. All of these should fall within the protection scope of this utility model. Meanwhile, the width of each solder joint should be greater than the sum of the widths of its corresponding solder troughs. That is, when a solder joint corresponds to three sets of solder troughs, all three sets of solder troughs should be placed within the solder joint. The protruding parts on the same side of the outer shell can also be connected and integrally formed, or a hollow part 306 can be set in the middle. During the glue injection process after the outer shell is connected to the PCB board, the hollow part can achieve a better glue injection effect. At the same time, larger electronic components on the PCB board can also be placed in the hollow groove, which facilitates the placement of electronic components on the PCB board.

[0025] Furthermore, such as Figures 1-4As shown, to further increase the strength of the housing, the end 308 of the solder bath extends onto the smooth portion 309. When solder is squeezed into the solder bath, the solder also increases the connection strength between the smooth portion and the outward protrusion, thereby increasing the strength of the housing. Simultaneously, to better determine the insertion status of the PCB board, a limiting angle 203 is provided on the PCB board. When the PCB board is inserted into the housing and the outward protrusion contacts the limiting angle, the PCB board is fully inserted into the housing, making it easier to determine the insertion status.

[0026] When connecting the connector of this application, after applying solder to the solder point 201 on the PCB board 20, the PCB board 20 is first inserted into the receiving cavity 300 through the insertion port 307 on one side of the recessed portion 200. When the recessed portion contacts the reinforcing rib 303, it indicates that the PCB board is inserted in place. At this time, the PIN pin 202 is placed at the PIN pin window 301. At the same time as insertion, the solder point passes through the protrusion 304. After the PCB board is inserted in place, the solder point is placed at the solder flow groove. During the insertion process, the solder on the solder point is squeezed into the solder flow groove, which can firmly connect the PCB board and the shell. The connected connector is more stable and can be used for more mating and unmating.

[0027] A preferred embodiment of the present invention includes a device comprising a stable connector as described above. The device may be a data cable or an insertion end, etc. The structure of a specific stable connector is the same as described above, and will not be repeated here.

[0028] It should be understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A connector with stable connection, comprising a housing, an insertion port formed on one side of the housing, an internal accommodating cavity, and a PCB board inserted into the accommodating cavity from the insertion port. The PCB board is provided with pins, and the housing has pin windows corresponding to the pins. The PCB board is inserted into the housing, and the pins are positioned at the pin windows. The connector is characterized in that: The PCB board is provided with multiple sets of solder points, and the inner wall of the outer shell is provided with at least one set of solder flow grooves corresponding to each set of solder points. The solder on the solder points is squeezed into the solder flow grooves during the process of inserting the PCB board into the receiving cavity.

2. The connector according to claim 1, characterized in that: The outer casing includes a smooth portion and an outwardly protruding portion connected to the smooth portion. The outwardly protruding portion is close to the insertion port, and the thickness of the outwardly protruding portion is greater than the thickness of the smooth portion.

3. The connector according to claim 2, characterized in that: The solder flow groove is located on the inner wall of the outer protrusion. Two sets of solder points are provided on both the upper and lower sides of the PCB board. The two sets of solder points are located at the two ends of the upper and lower sides. The inner wall of the outer protrusion is provided with at least one set of solder flow grooves for each set of solder points.

4. The connector according to claim 3, characterized in that: The tin flow groove has a square or trapezoidal cross-section, with the shorter base of the trapezoid being closer to the PIN pin window.

5. The connector according to claim 3, characterized in that: The width of the solder joint is greater than the sum of the widths of its corresponding multiple sets of solder baths.

6. The connector according to claim 3, characterized in that: The end of the solder flow groove extends to the smooth part, and a hollow part is provided in the middle of the outward protrusion. Solder flow grooves are provided on both sides of the outward protrusion of the hollow part.

7. The connector according to any one of claims 1-6, characterized in that: The outer casing is provided with fixing buckles on both sides, and a reinforcing rib is provided on the top of the outer casing. The upper end of the PCB board is provided with a recess corresponding to the reinforcing rib.

8. The connector according to claim 7, characterized in that: The PCB board is provided with a limiting angle. When the limiting angle contacts the outer shell, the PCB board cannot be further inserted into the outer shell.

9. An apparatus, characterized in that: The device includes a stable connector as described in any one of claims 1-8.

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