Electric connector

Abstract

The utility model discloses an electric connector, which comprises an insulating body provided with an accommodating cavity, an upper wall and a limiting part upwards protruding out of the upper wall, a limiting groove is arranged below the limiting part, the upper wall is provided with an open groove, and the open groove is positioned below the limiting groove to communicate the limiting groove with the accommodating cavity; the conductive module is accommodated in the accommodating cavity and is forwards butted with the butting connector; the first insulating part is fixedly arranged on the conductive module, the first insulating part is provided with an upper bulge, and the upper bulge is accommodated in the open slot; the locking fastener is arranged on the upper wall; and the drawstring is sleeved on the locking fastener and penetrates through the limiting groove. According to the invention, the open slot is arranged below the limiting slot on the insulating body, and the upper bulge is arranged at the position, corresponding to the open slot, of the first insulating part, so that the first insulating part is easier to be fully molded.

Description

[Technical field]

[0001] The utility model relates to an electric connector, in particular to an electric connector with an unlocking structure. [Background technology]

[0002] The low-pressure injection molding process is a packaging technology that uses a relatively low pressure (0.15-4MPa) to inject molten material into a mold and quickly solidify it. It uses the excellent sealing and excellent physical and chemical properties of hot-melt materials to achieve insulation, heat resistance, impact resistance, vibration resistance, moisture resistance, waterproofness, dust resistance, chemical corrosion resistance, etc., and has a good protective effect on electronic components.

[0003] Existing electrical connectors often use low-pressure injection molding to form insulating blocks to protect the electronic components inside the connector. Such insulating blocks are housed inside the connector housing to wrap and fix the electronic components inside the connector (such as circuit boards, terminals, cables, etc.). However, the pressure during injection molding is relatively low, and the insulating blocks are prone to under-molding. This phenomenon is more obvious when the insulating blocks are thin and have less rubber.

[0004] Chinese utility model patent CN202120962588.4 discloses a connector cover installed inside the cavity of the connector housing. The connector cover has a drawstring hole for limiting the drawstring. The connector cover is relatively strong, has high plastic strength, is not easy to deform, and is injection molded under high pressure (greater than 4MPa). This injection molding process is easy to fill the mold due to the high pressure and fast flow rate of the rubber during injection molding, and the connector cover is easy to saturate the mold during molding. However, compared with low-pressure injection molding, this process is not only more expensive, but also easy to damage the cable when it is integrally molded with the cable.

[0005] Therefore, it is necessary to design an electrical connector to overcome the above problems. [Contents of the utility model]

[0006] The invention aims to provide an electrical connector, wherein the first insulating member is provided with an upper protrusion, so that the first insulating member is easier to be filled with mold, and a slot is provided on the insulating body below the limiting groove, and the upper protrusion is accommodated in the slot so that when the height of the upper protrusion exceeds expectations, the limiting groove can give way to the upper protrusion, so that the first insulating member can still be assembled normally.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] An electrical connector, characterized in that it includes: an insulating body, including a receiving cavity, an upper wall and a limiting portion protruding upward from the upper wall, a limiting groove is provided below the limiting portion, and a slot is provided on the upper wall, and the slot is located below the limiting groove to connect the limiting groove with the receiving cavity; a conductive module, received in the receiving cavity, and the conductive module is forwardly docked with a docking connector; a first insulating member, fixedly provided on the conductive module, the first insulating member has an upper protrusion, and the upper protrusion is received in the slot; a locking member, provided on the upper wall; a drawstring, sleeved on the locking member and passing through the limiting groove, and the portion of the drawstring received in the limiting groove is located between the limiting portion and the upper protrusion.

[0009] Furthermore, the conductive module includes a plurality of cables, the first insulating component is low-pressure injection-molded on the cables, and the hardness of the limiting portion is greater than the hardness of the first insulating component.

[0010] Furthermore, the insulating body includes a lower wall, the receiving cavity is located between the upper wall and the lower wall, the lower wall is recessed downwardly with a recess, the first insulating member also has a lower protrusion, the lower protrusion is received in the recess, the upper protrusion is located in the upper half of the first insulating member, the lower protrusion is located in the lower half of the first insulating member, and the upper half and the lower half of the first insulating member are symmetrically arranged.

[0011] Furthermore, the conductive module includes a plurality of pads and cables, the cable has a welding portion, and the welding portion is welded to the pad; the first insulating member has a front end surface, and the front end surface is located behind the welding portion and is spaced apart from the welding portion.

[0012] Furthermore, the first insulating member has a front end surface and a rear end surface, the rear end surface is located in the receiving cavity, and the distance between the front end surface and the rear end surface is smaller than the length of the limiting portion in the front-to-back direction.

[0013] Furthermore, the first insulating member includes a rear end face and a stop portion, the stop portion at least partially extends rearwardly beyond the rear end face, the upper protrusion is arranged on the stop portion, and defines a left-right direction perpendicular to the front-to-back direction and the up-down direction. In the left-to-right direction, the length of the stop portion is greater than the length of the slot, and a second insulating member is arranged behind the first insulating member, and the second insulating member abuts against the stop portion upward and abuts against the rear end face forward.

[0014] An electrical connector, characterized in that it comprises: an insulating body, comprising a receiving cavity, an upper wall and a limiting portion protruding upward from the upper wall, a limiting groove is provided below the limiting portion, and a slot is provided on the upper wall, and the slot is located below the limiting groove to connect the limiting groove with the receiving cavity; a terminal assembly is accommodated in the receiving cavity, and the terminal assembly is forwardly docked with a docking connector; a cable is electrically connected to the terminal assembly; a first insulating member is low-pressure injection molded on the cable, and the first insulating member has an upper protrusion, and the upper protrusion is accommodated in the slot; a locking member is provided on the upper wall; a drawstring is sleeved on the locking member and passes through the limiting groove, and the portion of the drawstring accommodated in the limiting groove is located between the limiting portion and the upper protrusion.

[0015] Furthermore, the first insulating member includes an upper half and a lower half that are symmetrically arranged, the upper half has an upper stop portion, the lower half has a lower stop portion, the first insulating member has a rear end face, the upper stop portion and the lower stop portion at least partially extend rearwardly beyond the rear end face, the upper protrusion is provided on the upper stop portion, the lower stop portion is provided with a lower protrusion, a second insulating member is provided behind the first insulating member, the second insulating member abuts against the upper stop portion upwardly and abuts against the lower stop portion downwardly.

[0016] Further, a left-right direction perpendicular to the front-rear direction and the up-down direction is defined, and in the left-right direction, the length of the upper stop portion is greater than the length of the slot.

[0017] Furthermore, the terminal assembly includes a plurality of soldering pads, and the cable has a soldering portion soldered to the soldering pad; the first insulating member has a front end face and a rear end face, and the front end face is located behind the soldering portion and is spaced apart from the soldering portion; the rear end of the first insulating member is located in the accommodating cavity, and the distance between the front end face and the rear end face is less than the length of the limiting portion in the front-to-back direction.

[0018] Compared with the prior art, the electrical connector provided by the utility model has the following beneficial effects:

[0019] The first insulating part has an upper protrusion, which makes it easier for the first insulating part to fill the mold during molding. A groove is set below the limiting groove to accommodate the upper protrusion. If the height of the upper protrusion exceeds expectations, the limiting groove can give way to the upper protrusion, so that the first insulating part can utilize the space of the limiting groove during assembly and complete the assembly normally.

[0020] The first insulating part is molded on the cable by low-pressure injection molding, which can fix the position of the cable and facilitate the subsequent installation of the cable. Compared with the high-pressure injection molding process, the low-pressure injection molding process has lower costs. The hardness of the injection-molded first insulating part will be lower than the hardness of the limiting part, and the cable will not be damaged during injection molding.

Brief Description of the Drawings

[0021] Figure 1 It is a three-dimensional schematic diagram of the electrical connector of the utility model;

[0022] Figure 2 It is a three-dimensional exploded view of the electrical connector of the utility model;

[0023] Figure 3 A three-dimensional schematic diagram of the first insulating member of the utility model;

[0024] Figure 4 for Figure 1 A cross-sectional view of

[0025] Figure 5 It is a schematic diagram of the first insulating member of the utility model after being assembled on the insulating body.

[0026] Description of the accompanying drawings for the specific implementation:

[0027] Electrical connector 100, insulating body 1, upper wall 11, limiting portion 111, limiting groove 112, slot 113, lower wall 12, recess 121, accommodating cavity 13, conductive module 2, terminal 21, pad 211, insulating block 22, cable 23, welding portion 231, first insulating member 3, front end face 31, rear end face 32, upper stopper 33, upper protrusion 331, lower stopper 34, lower protrusion 341, second insulating member 4, locking member 5, drawstring 6, distance L1 between front end face 31 and rear end face 32,

[0028] The length L2 of the limiting portion 111 in the front-to-back direction,

[0029] The length L3 of the upper stopper 33 in the left-right direction,

[0030] The length of the slot 113 in the left-right direction is L4. [Specific implementation method]

[0031] In order to facilitate a better understanding of the purpose, structure, characteristics and functions of the present invention, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods.

[0032] The electrical connector 100 of the present invention defines the left-right direction as the X-axis, the left direction as the positive direction of the X-axis, the front-back direction as the Y-axis, the forward direction as the positive direction of the Y-axis, the up-down direction as the Z-axis, the upward direction as the positive direction of the Z-axis, and the horizontal direction is perpendicular to the up-down direction.

[0033] like Figure 1 and Figure 2 As shown, the utility model provides an electrical connector 100 , including an insulating body 1 , a conductive module 2 , a first insulating member 3 , a second insulating member 4 , a locking member 5 and a drawstring 6 .

[0034] The insulating body 1 includes an upper wall 11, a lower wall 12 and a receiving cavity 13 located between the upper wall 11 and the lower wall 12. The upper wall 11 is provided with a limiting portion 111 protruding upward, and a limiting groove 112 is provided below the limiting portion 111. The upper wall 11 is provided with a slot 113, and the slot 113 is located below the limiting groove 112 to connect the limiting groove 112 with the receiving cavity 13. The lower wall 12 is recessed downward with a recess 121; the locking member 5 is fixed to the upper wall 11, and is used to lock the electrical connector 100 with the docking connector, and the pull belt 6 is sleeved behind the locking member 5 and passes through the limiting groove 112.

[0035] The conductive module 2 includes a terminal assembly and a cable 23 electrically connected to the terminal assembly. The front end of the terminal assembly is docked with the docking connector. The first insulating member 3 is low-pressure injection molded on the cable 23, so that the hardness of the first insulating member 3 is lower than the hardness of the limiting portion 111. The terminal assembly is composed of a terminal 21 and an insulating block 22. The rear end of the terminal 21 has a soldering pad 211, and the front end of the cable 23 has a welding portion 231, and the welding portion 231 is welded on the soldering pad 211. Of course, in other embodiments, the rear end of the terminal 21 does not have to be welded to the cable 23, and can also be crimped, and it is only necessary to make the cable 23 electrically connected to the terminal 21. In other words, the terminal assembly can be replaced with a circuit board, and the first insulating member 3 can be injection molded on the cable 23 or the connecting part of the cable 23 and the circuit board after the cable 23 is welded on the circuit board.

[0036] like Figure 3 As shown, the first insulating member 3 has a front end face 31 and a rear end face 32, and the first insulating member 3 has an upper half and a lower half symmetrically arranged, the upper half has an upper stop portion 33, and the lower half has a lower stop portion 34, and a portion of the upper stop portion 33 and the lower stop portion 34 extends backward beyond the rear end face 32, so that the volume of the first insulating member 3 can be increased, that is, the amount of rubber during injection molding is increased, and the risk of the first insulating member 3 not being fully molded is reduced.

[0037] The upper stop portion 33 is provided with an upper protrusion 331 which protrudes upward. The upper protrusion 331 is received in the slot 113 and is given way by the limiting slot 112. That is to say, the portion of the drawstring 6 received in the limiting slot 112 is located between the limiting portion 111 and the upper protrusion 331. The upper protrusion 331 can cooperate with the limiting portion 111 to limit the drawstring 6. In addition, when the first insulating part 3 is molded by low-pressure injection molding, the rubber flows in from the left and right sides. The setting of the upper protrusion 331 allows the rubber to fill the place in the mold with a height lower than the upper protrusion 331 during the flow process, that is, the risk of the first insulating part 3 not being fully molded can be reduced. Considering that the longer the distance the rubber flows, the slower its flow rate, and the more difficult it is to fill the gap, the middle position of the first insulating part 3 in the left and right directions is the most suitable position for setting the upper protrusion 331. In order to facilitate the unlocking operation, the pull belt 6 is often set in the middle position of the connector in the left and right directions. The slot 113 is opened below the limit groove 112 to accommodate the upper protrusion 331, which just allows the upper protrusion 331 to be located in the middle position of the first insulating part 3 in the left and right directions. Furthermore, the slot 113 connects the limit groove 112 and the receiving cavity 13. If the height of the upper protrusion 331 exceeds expectations, the limit groove 112 can give way to the upper protrusion 331, so that the first insulating part 3 can be assembled normally using the space of the limit groove 112.

[0038] The lower stopper 34 is provided with a lower protrusion 341 protruding downward, and the lower protrusion 341 is correspondingly received in the recess 121, which can further increase the amount of glue of the first insulating member 3, making it easier to saturate the mold of the first insulating member 3. The upper and lower parts of the insulating member are symmetrically arranged, so that the insulating member does not need to be considered upside down during installation, and the assembly is more convenient.

[0039] like Figure 4 As shown, there is a gap between the front end face 31 and the welding portion 231, so that the first insulating member 3 cannot wrap the welding portion 231, so that the welding portion 231 can be exposed to the air, thereby increasing the impedance at the welding portion 231, which is beneficial to the impedance matching of the entire conductive module 2. On the other hand, since the first insulating member 3 is assembled in the receiving cavity 13 of the insulating body 1, there are multiple gaps between the first insulating member 3 and the insulating body 1, and the fixation between the first insulating member 3 and the insulating body 1 is not reliable. Therefore, it is necessary to set a second insulating member 4 behind the first insulating member 3 to fix the first insulating member 3 so that the first insulating member 3 is not easy to loosen. In this case, the rear end face 32 of the first insulating member 3 must be located in the receiving cavity 13, so that space can be reserved for setting the second insulating member 4.

[0040] It can be seen that both the front end face 31 and the rear end face 32 of the first insulating member 3 are restricted, which puts forward requirements on the width of the first insulating member 3 in the front-to-back direction. In this embodiment, the distance L1 between the front end face 31 and the rear end face 32 is set to be smaller than the length L2 of the limiting portion 111 in the front-to-back direction.

[0041] Combine the following Figure 4 and Figure 5 The actual assembly process of the electrical connector 100 is briefly described as follows:

[0042] First, a low-pressure injection molding process is used to integrally mold the cable 23 and the first insulating member 3 to fix the position of each cable 23. Since the pressure of the low-pressure injection molding process is relatively low (0.15-4MPa, 0.8MPa in this embodiment), the cable 23 will not be damaged during injection molding. The cable 23 is then welded to the pad 211 to be electrically connected to the terminal assembly. The cable 23, the terminal assembly and the first insulating member 3 are then installed in the accommodating cavity 13. The second insulating member 4 is injection molded in the accommodating cavity 13 by means of an injection molding inner mold. During this process, the second insulating member 4 abuts against the rear end face 32 forward, the upper stop portion 33 upward, and the lower stop portion 34 downward, so that the second insulating member 4 can be in close contact with the first insulating member 3.

[0043] In the left and right directions, the length L3 of the upper stop portion 33 is greater than the length L4 of the slot 113, and the upper protrusion 331 is arranged on the upper stop portion 33, that is, the upper stop portion 33 can basically block the space between the limiting slot 112 and the receiving cavity 13, thereby protecting the limiting slot 112 and reducing the problem of the rubber material entering the limiting slot 112 when molding the second insulating part 4.

[0044] In summary, the utility model has the following effects:

[0045] 1. The first insulating member 3 has an upward protrusion 331, which makes it easier for the first insulating member 3 to be fully molded during molding. A slot 113 is provided below the limiting groove 112 to accommodate the upper protrusion 331. If the height of the upper protrusion 331 exceeds expectations, the limiting groove 112 can give way to the upper protrusion 331, so that the first insulating member 3 can be assembled normally using the space of the limiting groove 112 during assembly.

[0046] The first insulating member 3 can also fix the position of the cable 23 to facilitate the subsequent installation of the cable 23. In addition, the first insulating member 3 is formed by low-pressure injection molding, which is lower in cost than high-pressure injection molding and will not cause damage to the cable 23 during injection molding.

[0047] 2. The lower protrusion 341 is provided to further increase the amount of glue in the first insulating member 3, making it easier for the first insulating member 3 to be fully molded. The upper and lower parts of the first insulating member 3 are symmetrically arranged, so that the first insulating member 3 does not need to be considered to be upside down during installation, and the assembly is more convenient.

[0048] 3. The second insulating member 4 abuts against the upper stopper 33 upwards, the lower stopper 34 downwards, and the rear end face 32 forwards, so that the first insulating member 3 and the second insulating member 4 are in close contact, so that the second insulating member 4 can prevent the first insulating member 3 from loosening. On the other hand, a portion of the upper stopper 33 and the lower stopper 34 extends backwards beyond the rear end face 32, which can also increase the volume of the upper stopper 33 and the lower stopper 34, that is, increase the volume of the first insulating member 3, so that the first insulating member 3 is easier to saturate the mold.

[0049] The above detailed description is only an explanation of the preferred embodiment of the utility model, and does not limit the patent scope of the utility model. Therefore, all equivalent technical changes made by using the description and illustrations of this creation are included in the patent scope of this creation.

Claims

1. An electrical connector, characterized in that: include: The insulating body comprises a receiving cavity, an upper wall and a limiting portion protruding upward from the upper wall, a limiting groove is provided below the limiting portion, and a slot is provided on the upper wall, the slot is located below the limiting groove to connect the limiting groove with the receiving cavity; A conductive module is housed in the housing cavity, and the conductive module is forwardly connected to the docking connector; A first insulating member, fixedly mounted on the conductive module, wherein the first insulating member has an upper protrusion, and the upper protrusion is received in the slot; A locking member, disposed on the upper wall; A drawstring is sleeved on the locking member and passes through the limiting groove, and a portion of the drawstring received in the limiting groove is located between the limiting portion and the upper protrusion.

2. The electrical connector according to claim 1, wherein: The conductive module includes a plurality of cables, the first insulating member is low-pressure injection-molded on the cables, and the hardness of the limiting portion is greater than the hardness of the first insulating member.

3. The electrical connector according to claim 1, wherein: The insulating body includes a lower wall, the receiving cavity is located between the upper wall and the lower wall, the lower wall is recessed downwardly with a recess, the first insulating member also has a lower protrusion, the lower protrusion is received in the recess, the upper protrusion is located in the upper half of the first insulating member, the lower protrusion is located in the lower half of the first insulating member, and the upper half and the lower half of the first insulating member are symmetrically arranged.

4. The electrical connector according to claim 1, wherein: The conductive module includes a plurality of pads and cables, wherein the cable has a welding portion, and the welding portion is welded to the pad; the first insulating member has a front end surface, and the front end surface is located behind the welding portion and is spaced apart from the welding portion.

5. The electrical connector according to claim 1, wherein: The first insulating member has a front end surface and a rear end surface, the rear end surface is located in the receiving cavity, and the distance between the front end surface and the rear end surface is smaller than the length of the limiting portion in the front-to-back direction.

6. The electrical connector according to claim 1, wherein: The first insulating member includes a rear end face and a stop portion, wherein the stop portion at least partially extends rearwardly beyond the rear end face, and the upper protrusion is arranged on the stop portion to define a left-right direction perpendicular to the front-to-back direction and the up-down direction. In the left-to-right direction, the length of the stop portion is greater than the length of the slot. A second insulating member is arranged behind the first insulating member, and the second insulating member abuts against the stop portion upwardly and against the rear end face forwardly.

7. An electrical connector, characterized in that: include: The insulating body comprises a receiving cavity, an upper wall and a limiting portion protruding upward from the upper wall, a limiting groove is provided below the limiting portion, and a slot is provided on the upper wall, the slot is located below the limiting groove to connect the limiting groove with the receiving cavity; A terminal assembly is received in the receiving cavity, and the terminal assembly is forwardly connected to the docking connector; A cable electrically connected to the terminal assembly; A first insulating member, low-pressure injection-molded on the cable, the first insulating member having an upper protrusion, the upper protrusion being received in the slot; A locking member, disposed on the upper wall; A drawstring is sleeved on the locking member and passes through the limiting groove, and a portion of the drawstring received in the limiting groove is located between the limiting portion and the upper protrusion.

8. The electrical connector according to claim 7, wherein: The first insulating member includes an upper half and a lower half that are symmetrically arranged, the upper half has an upper stop portion, the lower half has a lower stop portion, the first insulating member has a rear end face, the upper stop portion and the lower stop portion at least partially extend rearwardly beyond the rear end face, the upper protrusion is arranged on the upper stop portion, the lower stop portion is provided with a lower protrusion, a second insulating member is arranged behind the first insulating member, the second insulating member abuts against the upper stop portion upwardly and abuts against the lower stop portion downwardly.

9. The electrical connector according to claim 8, wherein: A left-right direction perpendicular to the front-rear direction and the up-down direction is defined, and in the left-right direction, the length of the upper stopper is greater than the length of the slot.

10. The electrical connector according to claim 7, wherein: The terminal assembly includes a plurality of soldering pads, and the cable has a soldering portion soldered to the soldering pads; the first insulating member has a front end face and a rear end face, and the front end face is located behind the soldering portion and is spaced apart from the soldering portion; the rear end of the first insulating member is located in the accommodating cavity, and the distance between the front end face and the rear end face is less than the length of the limiting portion in the front-to-back direction.

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