Landline telephone jack connector

Abstract

The utility model discloses a socket connector for a landline telephone, which relates to the technical field of socket connectors and comprises a connector shell. The connector shell is provided with a connecting slot, a plurality of first fixing holes penetrating front and back, a welding position adjusting groove communicated with the rear end hole section of each first fixing hole, a first terminal positioning groove communicated with the front end hole section of each first fixing hole, a terminal positioning block, a second terminal positioning groove, a connecting terminal, a positioning front side wall and a positioning rear side wall; the connecting terminal comprises a first section terminal, a section terminal and a third section terminal; the connecting terminal is arranged on the first fixing hole in a penetrating mode from front to back or from back to front, the front-back movement of the connecting terminal is limited through the positioning front side wall and the positioning rear side wall, and the left-right lateral deviation of the connecting terminal is prevented through the second terminal positioning groove, so that the connecting terminal can be fixed without additionally arranging a fastening part, and the connecting terminal can be fixed in a fixed mode. And under the condition that a connector shell does not need to be injection-molded on the connecting terminal, the connecting terminal can be well connected and fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of socket connectors, in particular to a landline telephone socket connector. Background Art

[0002] The landline telephone jack connector mainly adopts the RJ11 type connector, which only needs two contact terminals in the middle to realize signal connection.

[0003] Currently, in order to be suitable for SMT soldering operations, plastic positioning posts are set at the bottom of the landline telephone jack connector to be used to position the landline telephone jack connector and plug it into the corresponding PCB board during SMT soldering operations. However, the plastic positioning posts are usually set relatively long and cannot adapt well to the through-hole reflow soldering process.

[0004] Furthermore, the contact terminals on the landline telephone jack connector are usually fixed by positioning the uncut and separated row of terminals on an injection mold and then annotating a plastic insulating shell thereon, or by assembling an insulating shell through a detachable structure to fix the contact terminals during the assembly process. The structure is such as the Chinese utility model "A vertical patch RJ11 connector" with the announcement number CN221305044U, which includes a main shell, a plug core, and a conductive terminal. The front end of the main shell is provided with a first plug-in cavity, and the rear end of the main shell is provided with a second plug-in cavity near the bottom. The first plug-in cavity is used to plug in the RJ11 plug. The rear end of the plug core is provided with a plug-in hole near the bottom, and the plug-in hole is connected to the bottom of the plug core. The conductive terminal is mainly a "V"-shaped strip, and one end of the "V"-shaped strip extends vertically to form a vertical end portion. During assembly, the conductive terminal is inserted through the insertion hole and fixed to the ferrule. The ferrule with the conductive terminal is then inserted into the second insertion cavity, where the ferrule and the second insertion cavity are snap-fitted and fixed. Using an insulating housing directly on the contact terminal requires a number of adjustment structures on the mold to ensure that the molten plastic is molded only at the corresponding position on the contact terminal when the contact terminal is positioned. Similarly, an insulating housing using an assembled design requires multiple sets of molds to manufacture different assembly components, both of which result in higher costs.

[0005] Therefore, it is necessary to propose an improved landline telephone jack connector to at least solve the above-mentioned technical problems. Utility Model Content

[0006] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a landline telephone jack connector, comprising a connector housing, a front end of the connector housing having a connecting slot, a bottom shell of the connector housing having a plurality of first fixing holes extending front to back, the plurality of first fixing holes being arranged at intervals on the left and right sides of the bottom shell; a welding position adjustment groove communicating with the rear end hole section of the first fixing hole is formed on the bottom side of the bottom shell, the welding position adjustment groove also extends rearward to communicate with the rear side of the bottom shell, and the welding position adjustment groove is correspondingly formed with a positioning front side wall opposite to the rear notch of the welding position adjustment groove; a first terminal positioning groove communicating with the front end hole section of the first fixing hole is formed on the top side of the bottom shell, the first terminal positioning groove also extends forward to communicate with the front side of the bottom shell, and the first terminal positioning groove is correspondingly formed with a positioning rear side wall opposite to the front notch of the first terminal positioning groove; the front side of the rear shell of the connector housing is formed with a The terminal positioning block has a joint space formed between the top side of the terminal positioning block and the top wall of the connecting slot, and the front side of the terminal positioning block is formed with a second terminal positioning groove corresponding to the first fixing hole, and the second terminal positioning groove extends upward to the top side of the connecting terminal positioning block; at least two first fixing holes are provided with connecting terminals; the connecting terminal includes a first section terminal located in the first fixing hole, a second section terminal located at the front end of the first section terminal, and a third section terminal located at the rear end of the first section terminal; the second section terminal is bent obliquely backward from the connection between the first fixing hole and the first terminal positioning groove, and the rear end of the second section terminal is correspondingly entered into the corresponding second terminal positioning groove on the terminal positioning block; the third section terminal is bent downward from the connection between the first fixing hole and the welding position adjustment groove, and after the third section terminal is bent downward, it passes through the welding position adjustment groove from the lower notch of the welding position adjustment groove.

[0008] As a further solution of the present invention: the third section of the terminal is bent downward by 90°; the second section of the terminal is bent obliquely backward at an angle of any value between 145° and 155°.

[0009] As a further solution of the present invention, the distances between the positioning front side walls of adjacent welding position adjustment grooves and the rear side surface of the bottom shell are different.

[0010] As a further solution of the present invention: the connecting terminal is a cylindrical metal terminal.

[0011] As a further solution of the present invention: the positioning front side wall and the positioning rear side wall are convex arc-shaped surfaces suitable for bending and fitting the connecting terminals.

[0012] As a further solution of the present invention: a downwardly disposed plate end positioning column is formed on the bottom side of the bottom shell.

[0013] As a further solution of the present invention: the plate end positioning column is a short column.

[0014] As a further solution of the present invention, the lowest height of the downward protrusion of the positioning column at the plate end is the same as or nearly the same as the lowest height of the lower end of the third section terminal.

[0015] As a further solution of the present invention: the lower end of the plate end positioning column is further formed with a downwardly arranged guide portion, and the side surface of the guide portion is an inclined plug-in guide slope.

[0016] As a further solution of the present invention: the height ratio of the guide portion to the plate end positioning column is any ratio between 3:9 and 3:10.

[0017] Compared with the prior art, the beneficial effects of the present technical solution are as follows: by passing the connecting terminal through the first fixing hole from front to back or from back to front, and by positioning the front side wall and the rear side wall to form a limit for the forward and backward movement of the connecting terminal, and by using the second terminal positioning groove to prevent the connecting terminal from deviating to the left or right sides, the connecting terminal can be better connected and fixed without the need for additional fastening components and without the need to injection mold a connector shell on the connecting terminal.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 It is a structural stereogram of the utility model;

[0021] Figure 2 This is another structural stereogram of the present utility model;

[0022] Figure 3 This is the structural front view of the utility model;

[0023] Figure 4 yes Figure 3 Structural cross-sectional view along the AA direction.

[0024] The corresponding reference numerals in the accompanying drawings are described as follows:

[0025] Connector shell-1, bottom shell-101, rear shell-102, connection slot-2, first fixing hole-3, welding position adjustment slot-4, positioning front side wall-401, first terminal positioning slot-5, positioning rear side wall-501, terminal positioning block-6, second terminal positioning slot-601, connection terminal-7, first section terminal-701, second section terminal-702, third section terminal-703, board end positioning column-8, guide part-9. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-4 A landline telephone jack connector includes a connector housing 1, the front end of the connector housing 1 having a connection slot 2 for connecting to an external RJ11 male connector.

[0028] The connector housing 1 has a bottom shell 101 for forming the bottom wall of the connecting slot. The bottom shell 101 is formed with a plurality of first fixing holes 3 running through the bottom shell 101 . The plurality of first fixing holes are arranged on the bottom shell 101 at intervals on the left and right.

[0029] The bottom side of the bottom shell 101 is provided with welding position adjustment grooves 4 corresponding one-to-one to the first fixing holes 3 .

[0030] Specifically, a welding position adjustment groove 4 is formed on the bottom side of the bottom shell 101 and is connected to the rear end hole section of the first fixing hole 3. The welding position adjustment groove 4 also extends backward to be connected to the rear side of the bottom shell 101. The welding position adjustment groove 4 is correspondingly formed with a positioning front side wall 401 opposite to the rear notch of the welding position adjustment groove.

[0031] The top side of the bottom shell 101 is provided with first terminal positioning grooves 5 corresponding one-to-one to the first fixing holes 3 .

[0032] Specifically, a first terminal positioning groove 5 is formed on the top side of the bottom shell 101 and is connected to the front end hole section of the first fixing hole 3. The first terminal positioning groove 5 also extends forward to be connected to the front side of the bottom shell 101. The first terminal positioning groove 5 is correspondingly formed with a positioning rear side wall 501 opposite to the front notch of the first terminal positioning groove.

[0033] The connector housing 1 has a rear shell 102 for forming the rear wall of the connecting slot. The front side of the rear shell 102 is formed with a terminal positioning block 6 located in the connecting slot 2. A joining space is formed between the top side of the terminal positioning block 6 and the top wall of the connecting slot 2. The front side of the terminal positioning block 6 is formed with a second terminal positioning groove 601 corresponding to the first fixing hole 3. The second terminal positioning groove 601 extends upward to the top side of the connecting terminal positioning block 6.

[0034] Specifically, the second terminal positioning groove 601 corresponds to the first fixing hole 3 in the following manner: the second terminal positioning groove 5 in the up and down directions (the second terminal positioning groove or the virtual extension groove of the second terminal positioning groove in the up and down directions) and the first fixing hole 3 in the front and back directions (the first fixing hole or the virtual extension hole of the first fixing hole in the front and back directions) can form an intersection.

[0035] At least two of the first fixing holes are provided with connecting terminals 7. The connecting terminals 7 include a first section terminal 701 located in the first fixing hole 3, a second section terminal 702 located at the front end of the first section terminal 701, and a third section terminal 703 located at the rear end of the first section terminal 701.

[0036] The second section terminal 702 is arranged to bend obliquely backward after passing upward from the connection point between the first fixing hole 3 and the first terminal positioning groove 5, and the oblique backward bending angle is any angle value between 145°-155°, so that the angle between the second section terminal 702 and the first section terminal 701 is any angle value between 25°-35°.

[0037] After the second-section terminal 702 is bent obliquely backward, the second-section terminal 702 has a rear end and a front end connected to the first-section terminal 701. The rear end of the second-section terminal 702 is inserted into the corresponding second terminal positioning groove 601 on the terminal positioning block. The front end of the second-section terminal can also be referred to as the end connected to the first-section terminal, and the rear end of the second-section terminal can be referred to as the other end away from the first-section terminal.

[0038] The rear positioning side wall 501 constitutes a limiting structure for limiting the rearward movement of the second section terminal 702 .

[0039] When the RJ11 male connector is plugged into the connection slot 2, the second terminal positioning groove 601 can provide space for the RJ11 male connector to press and contact the second terminal 702, that is, the rear end of the second terminal 702 can move up and down in the corresponding second terminal positioning groove 601, and the left and right side walls of the second terminal positioning groove 601 can be used to limit the left and right side deviation of the rear end of the second terminal 702, thereby effectively ensuring the stability of the electrical connection during plugging.

[0040] As an RJ11 female socket that is plugged into an RJ11 male connector, the connecting terminal has a certain contact elasticity. That is, after the second-section terminal 702 is bent obliquely backward relative to the first-section terminal 701, the V-shaped structure or V-like structure formed by the second-section terminal 702 and the first-section terminal 701 has a certain elasticity, so that when the RJ11 male connector is plugged in and presses against the second-section terminal 702, it can better make elastic pressing contact with the corresponding terminal on the RJ11 male connector.

[0041] The third section terminal 703 is bent downward from the connection point between the first fixing hole 3 and the welding position adjustment slot 4, such as bending downward 90°. After bending downward, the third section terminal 703 passes through the welding position adjustment slot 4 from the lower notch of the welding position adjustment slot 4.

[0042] The positioning front side wall 401 constitutes a limiting structure for limiting the forward movement of the third section terminal 703 .

[0043] By passing the connecting terminal 7 through the first fixing hole 3 from front to back or from back to front, and by forming a limit on the forward and backward movement of the connecting terminal 7 by positioning the front side wall 401 and the rear side wall 501, and by preventing the connecting terminal 7 from deviating to the left or right sides through the second terminal positioning groove 601, the connecting terminal 7 can be better connected and fixed without the need to add additional fastening components and without the need to injection mold a connector shell on the connecting terminal.

[0044] In some embodiments, the distances between the positioning front side walls of adjacent welding position adjustment grooves and the rear side surface of the bottom shell are different.

[0045] like Figure 2 As shown, the distance between the positioning front sidewall 401a and the rear side of the bottom shell is different from the distance between the adjacent positioning front sidewall 401b and the rear side of the bottom shell. The bending points of the third sections of terminals (703a, 703b) on adjacent connecting terminals are different, that is, the third sections of terminals on adjacent connecting terminals can be staggered, which can effectively prevent the solder joints of adjacent terminals from sticking during welding.

[0046] After the third sections of the terminals of different connection terminals are bent downward, the heights of the lower ends of the third sections of the terminals should be kept the same or nearly the same as far as possible, so as to effectively ensure a good welding effect when using the SMT welding process.

[0047] In some embodiments, the connecting terminal 7 is a cylindrical metal terminal that is bent into a first terminal section 701, a second terminal section 702, and a third terminal section 703. The cylindrical design allows it to better fit into various restricted positions after bending, such as the front positioning side wall 401, the rear positioning side wall 501, and the left and right side walls of the second terminal positioning groove 601.

[0048] In some embodiments, the positioning front side wall 401 and the positioning rear side wall 501 are convex arc-shaped surfaces suitable for bending and fitting the connecting terminals 7 .

[0049] In this embodiment, the bottom side of the bottom shell 101 is formed with downwardly disposed board end positioning columns 8, and the connector housing can be positioned and plugged into a corresponding PCB board through the board end positioning columns, such as the PCB board used in a landline phone.

[0050] In some embodiments, the board end positioning pillars 8 are short pillars to better adapt to the through-hole reflow process and improve the efficiency of product board placement. Figure 3 As shown, the lowest height of the downward protrusion of the plate end positioning column 8 is the same as or nearly the same as the lowest height of the lower end of the third section terminal 703.

[0051] The lower end of the plate end positioning column 8 is further formed with a downwardly disposed guide portion 9, and the side surface of the guide portion 9 is an inclined plug-in guide slope.

[0052] Preferably, the height ratio of the guide portion 9 to the plate end positioning column 8 is any ratio between 3:9 and 3:10.

[0053] like Figure 3 As shown, there are two plate end positioning columns 8, which are respectively arranged on the left and right sides of the bottom shell.

[0054] In some embodiments, after forming the connector housing 1, the rear end of the connecting terminal 7 can be bent downward to obtain the third section terminal 703; then the connecting terminal 7 is inserted into the first fixing hole 3 from the back to the front, and the third section terminal 703 is limited by the positioning front side wall 401; then the front end of the connecting terminal 7 is passed through the first terminal positioning groove 5 and bent obliquely backward to form a second section terminal 702 with the rear end located in the second terminal positioning groove 601.

[0055] like Figure 1 As shown, when the connector housing is applied to a landline telephone socket, at least the two middle first fixing holes are provided with connecting terminals 7 .

[0056] In some embodiments, the number of the first fixing holes 3 is 6.

[0057] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A landline telephone jack connector, comprising a connector housing, the front end of which has a connection slot, characterized in that: The bottom shell of the connector housing is formed with a plurality of first fixing holes that pass through the bottom shell in a front-to-back manner. The plurality of first fixing holes are arranged on the bottom shell at intervals on the left and right sides. A welding position adjustment groove is formed on the bottom side of the bottom shell and is connected to the rear end hole section of the first fixing hole. The welding position adjustment groove also extends rearward to connect to the rear side of the bottom shell. The welding position adjustment groove is correspondingly formed with a positioning front side wall opposite to the rear notch of the welding position adjustment groove. A first terminal positioning groove is formed on the top side of the bottom shell and is connected to the front hole section of the first fixing hole. The first terminal positioning groove further extends forward to communicate with the front side of the bottom shell. The first terminal positioning groove is correspondingly formed with a positioning rear side wall opposite to the front notch of the first terminal positioning groove. The front side of the rear shell of the connector housing is formed with a terminal positioning block located in the connecting slot, and a joint space is formed between the top side of the terminal positioning block and the top wall of the connecting slot. The front side of the terminal positioning block is formed with a second terminal positioning groove corresponding to the first fixing hole, and the second terminal positioning groove extends upward to connect to the top side of the terminal positioning block; At least two of the first fixing holes are provided with connecting terminals; the connecting terminals include a first section terminal located in the first fixing hole, a second section terminal located at the front end of the first section terminal, and a third section terminal located at the rear end of the first section terminal; The second section of the terminal is bent obliquely backward from the connection point between the first fixing hole and the first terminal positioning groove, and the rear end of the second section of the terminal is correspondingly inserted into the corresponding second terminal positioning groove on the terminal positioning block; The third section terminal is bent downward from the connection point between the first fixing hole and the welding position adjustment groove. After being bent downward, the third section terminal passes through the welding position adjustment groove from the lower notch of the welding position adjustment groove.

2. The landline telephone jack connector according to claim 1, wherein: The third section of the terminal is bent downward 90°; The second terminal section has a rearwardly bent angle of 145° to 155°.

3. The landline telephone jack connector according to claim 1, wherein: The distances between the positioning front side walls of adjacent welding position adjusting grooves and the rear side surface of the bottom shell are different.

4. The landline telephone jack connector according to claim 1, wherein: The connecting terminals are cylindrical metal terminals.

5. The landline telephone jack connector according to claim 1, wherein: The positioning front side wall and the positioning rear side wall are convex arc-shaped surfaces suitable for bending and matching with the connecting terminals.

6. The landline telephone jack connector according to claim 1, wherein: A downwardly disposed plate end positioning column is formed on the bottom side of the bottom shell.

7. The landline telephone jack connector according to claim 6, wherein: The positioning columns at the plate ends are short columns.

8. The landline telephone jack connector according to claim 7, wherein: The lowest height of the downward protrusion of the plate end positioning column is the same as or nearly the same as the lowest height of the lower end of the third section terminal.

9. The landline telephone jack connector according to claim 7 or 8, characterized in that: The lower end of the plate end positioning column is further formed with a downwardly arranged guide portion, and the side surface of the guide portion is an inclined plug-in guide slope.

10. The landline telephone jack connector according to claim 9, wherein: The height ratio of the guide portion to the plate end positioning column is any ratio between 3:9 and 3:10.

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