PIN terminal anti-loosening connector

Abstract

The utility model belongs to the technical field of electric connectors, and particularly relates to an electric connector which comprises a plastic shell and PIN terminals, the plastic shell is provided with a front end and a rear end which are opposite to each other, the front end of the plastic shell is provided with a jack extending towards the rear end of the plastic shell, and the rear end of the plastic shell is provided with a plurality of terminal jacks communicated with the jack; the periphery of the PIN terminal is provided with at least two protrusions, the PIN terminal is inserted into the terminal jack from the jack direction, and the at least two protrusions enter the terminal jack successively and abut against the inner wall of the terminal jack, so that the PIN terminal is in interference fit with the terminal jack. Each protrusion abuts against the inner wall of the terminal jack, so that interference fit between the PIN terminal and the terminal jack is achieved, the connection stability between the PIN terminal and the terminal jack is greatly improved, displacement and looseness between the PIN terminal and the plastic shell are not prone to occurring, the terminal and plastic are prevented from being loosened in the process of turnover, transportation and the like of a product, and the service life of the product is prolonged. Therefore, the normal use stability of the connector is improved, and function failure is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical connectors, and particularly relates to a PIN pin terminal anti-loosening connector. Background Art

[0002] A connector is a component that electronic engineering technicians often come into contact with. Its function is to build a communication bridge between the interrupted parts or isolated circuits in the circuit, so that the current can flow and the circuit can achieve the predetermined function.

[0003] Existing connectors generally include a plastic housing and PIN pin terminals. One of the existing production methods of connectors is mostly to insert the PIN pin terminals into the holes of the plastic housing to achieve connection. However, during the specific use process of the connector, it needs to be repeatedly plugged and unplugged countless times. During each plugging and unplugging process, external force acts on the PIN pin terminals. As the number of uses increases, the connection between the PIN pin terminals and the holes of the plastic housing will become loose. In this way, not only the normal use of the connector is affected, but also there are certain safety hazards. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a PIN pin terminal anti-loosening connector, aiming to solve the technical problem that the PIN pin terminals connected to the plastic housing of the existing connector become loose as the number of uses increases.

[0005] To achieve the above purpose, a PIN pin terminal anti-loosening connector provided by an embodiment of the utility model includes a plastic housing and PIN pin terminals. The plastic housing has opposite front and rear ends. A mating hole extending towards the rear end is provided at the front end of the plastic housing, and several terminal holes communicating with the mating hole are provided at the rear end of the plastic housing. At least two protrusions are provided on the outer periphery of the PIN pin terminals. The PIN pin terminals are inserted into the terminal holes from the direction of the mating hole, and at least two of the protrusions enter the terminal holes successively and abut against the inner wall of the terminal holes, so that the PIN pin terminals are in interference fit with the terminal holes.

[0006] Optionally, the width between the opposite sides of each protrusion gradually increases along the insertion direction of the PIN pin terminals and forms a conical shape.

[0007] Optionally, the protrusions include a first protrusion and a second protrusion arranged at intervals along the insertion direction of the PIN pin terminals, and the maximum width value between the opposite sides of the first protrusion is less than the maximum width value between the opposite sides of the second protrusion.

[0008] Optionally, a horn-shaped inlet is formed at the hole edge of the terminal hole facing the mating hole.

[0009] Optionally, each of the PIN pin terminals passing through the terminal jacks is bent in the same direction.

[0010] Optionally, insertion guiding blocks are provided on at least one inner side wall of the pair of jacks.

[0011] Optionally, the insertion guiding blocks are integrally injection-molded with the plastic housing.

[0012] Optionally, there are ten PIN pin terminals.

[0013] One or more of the above technical solutions in the PIN pin terminal anti-loosening connector provided by the embodiment of the present invention at least have the following technical effects: In the PIN pin terminal anti-loosening connector provided by the embodiment of the present invention, by providing a stop step facing the pair of jacks in the terminal jack on the plastic housing, and providing a stop shoulder between the two ends on the PIN pin terminal, and then inserting the PIN pin terminal into the terminal jack from the direction of the pair of jacks until each protrusion provided on the outer periphery of the PIN pin terminal is located in the terminal jack, so that by the abutment of each protrusion against the inner wall of the terminal jack, an interference fit is achieved between the PIN pin terminal and the terminal jack, greatly improving the connection stability between the PIN pin terminal and the terminal jack, making it not easy for the PIN pin terminal and the plastic housing to be displaced and loosened, preventing the terminals and the plastic from loosening during the processes of product turnover, transportation, etc., thereby improving the normal use stability of the connector and avoiding functional failure. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 It is a schematic structural diagram of the PIN pin terminal anti-loosening connector provided by the embodiment of the present invention.

[0016] Figure 2 It is an exploded schematic structural diagram of the PIN pin terminal anti-loosening connector provided by the embodiment of the present invention.

[0017] Figure 3 It is a schematic structural diagram of the PIN pin terminal of the PIN pin terminal anti-loosening connector provided by the embodiment of the present invention.

[0018] Figure 4 For Figure 3The enlarged schematic view of the partial structure at position A of the PIN - pin terminal anti - loosening connector in

[0019] Figure 5 This is the sectional view of the PIN - pin terminal anti - loosening connector provided by the embodiment of the present utility model.

[0020] Figure 6 is Figure 5 The enlarged schematic view of the partial structure at position B of the PIN - pin terminal anti - loosening connector in

[0021] Among them, each reference numeral in the figure:

[0022] 10 - plastic housing, 11 - mating hole, 12 - terminal hole

[0023] 13 - horn inlet, 14 - insertion guide block, 20 - PIN - pin terminal

[0024] 21 - protrusion, 211 - first protrusion, 212 - second protrusion. Detailed implementation manners

[0025] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The following description of the embodiments by referring to the attached Figures 1 to 4 The described embodiments are exemplary and are intended to explain the embodiments of the present utility model, and should not be construed as a limitation of the present utility model.

[0026] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0027] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present utility model, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0028] In the embodiments of the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" and the like shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model may be understood according to specific circumstances.

[0029] In one embodiment of the present utility model, as Figure 1 , 3 shown in FIGS. 5 to 6, a PIN-pin terminal anti-loosening connector is provided, which includes a plastic housing 10 and PIN-pin terminals 20. The plastic housing 10 has opposite front and rear ends. A mating hole 11 extending towards its rear end is provided at the front end of the plastic housing 10, and several terminal holes 12 communicating with the mating hole 11 are provided at the rear end of the plastic housing 10; at least two protrusions 21 are provided on the outer periphery of the PIN-pin terminal 20. The PIN-pin terminal 20 is inserted into the terminal hole 12 from the direction of the mating hole 11, and at least two of the protrusions 21 enter the terminal hole 12 successively and abut against the inner wall of the terminal hole 12, so that the PIN-pin terminal 20 and the terminal hole 12 are in interference fit.

[0030] The PIN-pin terminal anti-loosening connector provided by the embodiments of the present utility model is provided with a stop step facing the mating hole 11 in the terminal hole 12 of the plastic housing 10, and a stop shoulder is provided on the PIN-pin terminal 20 between its two ends. Then, the PIN-pin terminal 20 is inserted into the terminal hole 12 from the direction of the mating hole 11 until all the protrusions 21 provided on the outer periphery of the PIN-pin terminal 20 are located in the terminal hole 12. In this way, through the abutment of each protrusion 21 against the inner wall of the terminal hole 12, the PIN-pin terminal 20 and the terminal hole 12 are in interference fit, greatly improving the connection stability between the PIN-pin terminal 20 and the terminal hole 12, making it not easy for the PIN-pin terminal 20 and the plastic housing 10 to be displaced and loosened, preventing the terminals and the plastic from loosening during the processes of product turnover, transportation, etc., thereby improving the normal use stability of the connector and avoiding functional failure.

[0031] In one embodiment of the present utility model, as Figures 3 to 6As shown, the width between the opposite sides of each of the protrusions 21 gradually increases along the insertion direction of the PIN needle terminal 20 and forms a conical shape. Specifically, for the conical PIN needle terminal 20, the width of its opposite sides gradually increases as the depth of insertion into the terminal jack 12 increases. On the one hand, this is conducive to inserting into the terminal jack 12, and on the other hand, it can ensure that as the depth of insertion into the terminal jack 12 increases, the fit between the PIN needle terminal 20 and the terminal jack 12 will become tighter and tighter, achieving a stable interference fit.

[0032] In an embodiment of the present utility model, as Figures 3 to 6 shown, the protrusion 21 includes a first protrusion 211 and a second protrusion 212 arranged at intervals along the insertion direction of the PIN needle terminal 20, and the maximum width value between the opposite sides of the first protrusion 211 is smaller than the maximum width value between the opposite sides of the second protrusion 212. In this way, when the first protrusion 21 is completely inserted into the terminal jack 12, a tight fit between the PIN needle terminal 20 and the terminal jack 12 has been achieved. Further, when the second protrusion 212 is completely inserted into the terminal jack 12, since the maximum width value between the opposite sides of the second protrusion 212 is greater than the maximum width value between the opposite sides of the first protrusion 211, the tight fit connection between the entire PIN needle terminal 20 and the terminal jack 12 is strengthened, and finally a super-stable connection between the PIN needle terminal 20 and the plastic housing 10 is achieved.

[0033] In an embodiment, as shown, as Figures 5 to 6 shown, a horn inlet 13 is formed at the hole edge of the terminal jack 12 facing the mating jack 11. The setting of the horn inlet 13 is conducive to guiding the PIN needle terminal 20 to be inserted into the terminal jack 12 from the direction of the mating jack 11 through the horn inlet 13, that is, a larger opening enables more convenient mating and plugging with the PIN needle terminal 20, with a clever structural design and strong practicability.

[0034] Preferably, as Figure 3 shown, as Figure 5 shown, there are ten PIN needle terminals 20 in the present utility model.

[0035] In an embodiment of the present utility model, as Figure 2 shown, each of the PIN needle terminals 20 passing through the terminal jack 12 is bent in the same direction (not shown in the figure). Specifically, by bending the rear end part of the PIN needle terminal 20 that has been tightly fitted with the terminal jack 12, the bent PIN terminal can be connected to a circuit board or the like according to requirements.

[0036] In an embodiment of the present utility model, as Figures 1 to 2As shown, at least one inner wall of the mating socket 11 is provided with an insertion guiding block 14. Specifically, the insertion guiding block 14 provided on the inner wall of the mating socket 11 is used for guiding and docking with another connection that is connected in cooperation with the embodiment of the present invention, and can prevent the problem of loosening of the two connectors after docking.

[0037] In an embodiment of the present invention, as Figures 1 to 2 shown, the insertion guiding block 14 is integrally injection-molded with the plastic housing 10. By producing the plastic housing 10 in the way of integral injection molding, and forming the insertion guiding block 14 in the mating socket 11 of the plastic housing 10, there is no need for secondary processing and it is formed at one time, which has higher production efficiency and production quality.

[0038] Furthermore, an annular stop portion (see Figure 2 ) is also provided on the outer periphery of the PIN terminal 20, and an annular stop step is provided on the inner wall of the terminal socket 12. By the abutment of the annular stop portion and the annular stop step, it can be realized to prevent the PIN terminal 20 from continuing to shift towards the rear end of the plastic housing 10.

[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A PIN terminal anti-loosening type connector, characterized in that: The invention comprises a plastic shell (10) and a PIN pin terminal (20), wherein the plastic shell (10) has a front end and a rear end opposite to each other, the front end of the plastic shell (10) is provided with a pair of plug holes (11) extending toward the rear end thereof, and the rear end of the plastic shell (10) is provided with a plurality of terminal plug holes (12) connected to the pair of plug holes (11); the outer periphery of the PIN pin terminal (20) is provided with at least two protrusions (21), the PIN pin terminal (20) is inserted into the terminal plug hole (12) from the direction of the pair of plug holes (11), and at least two of the protrusions (21) successively enter the terminal plug hole (12) and abut against the inner wall of the terminal plug hole (12), so that the PIN pin terminal (20) and the terminal plug hole (12) are interference-fitted.

2. The PIN terminal anti-loosening connector according to claim 1, characterized in that: The width between the opposite sides of each protrusion (21) gradually increases along the insertion direction of the PIN terminal (20) and forms a tapered shape.

3. The PIN terminal anti-loosening connector according to claim 2, characterized in that: The protrusion (21) comprises a first protrusion (211) and a second protrusion (212) arranged at intervals along the insertion direction of the PIN terminal (20), and the widest distance between two opposite sides of the first protrusion (211) is smaller than the widest distance between two opposite sides of the second protrusion (212).

4. The PIN terminal anti-loosening connector according to claim 1, characterized in that: A speaker inlet (13) is formed at the hole edge of the terminal insertion hole (12) facing the counter insertion hole (11).

5. The PIN terminal anti-loosening connector according to claim 1, characterized in that: Each of the PIN terminals (20) passing through the terminal insertion hole (12) is bent in the same direction.

6. The PIN terminal anti-loosening connector according to claim 1, characterized in that: An insertion guide block (14) is provided on at least one inner side wall of the pair of insertion holes (11).

7. The PIN terminal anti-loosening connector according to claim 6, characterized in that: The insertion guide block (14) is integrally injection-molded with the plastic housing (10).

8. The PIN terminal anti-loosening connector according to claim 1, characterized in that: The number of the PIN terminals (20) is ten.

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