Jack structure and electric connector

Abstract

The utility model relates to a jack structure and an electric connector, the jack structure comprises a plug connector and a sleeve, the plug connector comprises a shaft part and claw parts, the claw parts are connected to the periphery of one end face of the shaft part, the plurality of claw parts are annularly arranged around the central axis of the shaft part, and one end, far away from the shaft part, of each claw part is turned inwards in the direction close to the central axis; the claw part can be elastically opened and closed for clamping a contact pin; the sleeve is connected with the shaft part in a sleeved mode and covers the claw part so as to limit the opening range of the claw part. In the jack structure, the sleeve covers the claw part, so that the sleeve can limit the opening range of the claw part, the opening angle of the claw part is limited, the probability of elastic fatigue caused by overlarge opening angle of the claw part is reduced, and the service life of the claw part is prolonged. The electric connector comprises the above jack structure, and has a longer service life.

Description

Technical Field

[0001] The present application relates to the field of electrical connection technology, and in particular to a jack structure and an electrical connector. Background Art

[0002] An electrical connector is an electronic engineering device used to achieve electrical connection between devices, between apparatuses, and between electrical components. For current electrical connectors, one of the two parts of the plug-in structure includes a socket and the other includes a pin. The socket usually has a certain elastic opening and closing ability, so that the pin and the socket have a stable contact relationship after being plugged in.

[0003] However, during the repeated plugging and unplugging of the current electrical connector, the socket part is prone to elastic fatigue, resulting in poor contact, which reduces the service life of the electrical connector and urgently needs to be solved. Utility Model Content

[0004] Based on this, it is necessary to provide a socket structure and an electrical connector to address the problem that the socket part is prone to elastic fatigue after repeated plugging and unplugging of the electrical connector.

[0005] On the one hand, the present application provides a socket structure, which includes a plug-in connector and a sleeve. The plug-in connector includes a shaft portion and a claw portion. The claw portion is connected to the periphery of one end surface of the shaft portion. A plurality of claw portions are arranged in a ring shape around the central axis of the shaft portion, and one end of the claw portion away from the shaft portion is turned inward toward the direction close to the central axis. The claw portion can be elastically opened and closed for clamping a pin; the sleeve is sleeved on the shaft portion and covers the outside of the claw portion to limit the opening range of the claw portion.

[0006] In one of the embodiments, the free end of the sleeve away from the shaft portion is provided with an inner flange, one side of the inner flange is connected to the end surface of the sleeve, and the other side is folded into the sleeve in an arc shape.

[0007] In one embodiment, a plurality of the claws distributed in a ring form a plug-in portion, the plug-in portion has a plug-in cavity for the plug-in pin, the inner flange is ring-shaped to form an introduction hole, the inner flange is coaxially arranged with the shaft portion, and the inner diameter of the introduction hole gradually decreases in the direction pointing to the shaft portion along the central axis, the minimum inner diameter of the introduction hole is d1, the minimum inner diameter of the plug-in cavity is d2, and the minimum outer diameter of the plug-in portion is d3, wherein d2≤d1≤d3.

[0008] In one embodiment, a free end of the claw portion away from the shaft portion is provided with an introduction bevel, and a side of the introduction bevel close to the shaft portion is located radially inward relative to a side away from the shaft portion, and along the center axis, a projection of the minimum inner diameter of the introduction hole is located on the introduction bevel.

[0009] In one embodiment, the angle of the end of the claw portion away from the shaft portion turning inward toward the central axis is α, where 0.5° ≤ α ≤ 3°.

[0010] In one embodiment, the shaft portion includes a first section, a second section, and a step provided between the first section and the second section. The outer diameter of the first section is smaller than that of the second section, and the sleeve is sleeved on the first section and abuts against the step.

[0011] In one embodiment, the sleeve is coaxially arranged with the second section, and the outer diameter of the sleeve is equal to the outer diameter of the second section.

[0012] In one embodiment, a wire hole is formed at the end of the shaft portion away from the claw portion. The wire hole is for a wire to penetrate into, and the hole wall of the wire hole is used for fixedly connecting with the wire. The shaft portion is further provided with a communication hole that communicates the wire hole with the outside of the shaft portion.

[0013] In one embodiment, a fixing ring protrudes from the outer periphery of the shaft portion, and the fixing ring is used for installing and fixing with a fixing member.

[0014] On the other hand, the present application further provides an electrical connector, which includes a fixing member and the jack structure as described above, and the jack structure is installed on the fixing member.

[0015] In the above jack structure, since the sleeve covers the claw portion, the sleeve can limit the opening range of the claw portion, so that the opening angle of the claw portion is restricted, reducing the probability of elastic fatigue caused by the excessive opening angle of the claw portion and improving the service life of the claw portion. Thus, by limiting the opening range of the claw portion through the sleeve, the service life of the electrical connector can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an axonometric schematic view of the jack structure provided by an embodiment of the present application.

[0017] Figure 2 is Figure 1 the top view of the jack structure shown.

[0018] Figure 3 is Figure 2 the sectional view of the jack structure shown along line A-A.

[0019] Figure 4 is Figure 1 the exploded schematic view of the jack structure shown.

[0020] Figure 5 is Figure 4 the front view of the plug-in member in the jack structure shown.

[0021] Figure 6 For Figure 5 the partial enlarged view of the B position in the shown connector.

[0022] Reference numerals: 10, jack structure; 100, connector; 110, shaft portion; 111, first section; 112, second section; 113, step; 114, wire hole; 115, communication hole; 116, fixing ring; 120, claw portion; 121, guiding inclined surface; 130, insertion portion; 131, insertion cavity; 200, sleeve; 210, inward flanging; 220, guiding hole; O, central axis. Specific embodiments

[0023] In order to make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the specific embodiments of the present application in detail with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0024] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings. These are only for the convenience of describing the present application 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. Therefore, it should not be construed as a limitation to the present application.

[0025] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, if there is a term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0026] In this application, unless otherwise clearly specified or limited, if terms such as "installed", "connected", "linked", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] In this application, unless otherwise clearly specified or limited, if there is a description such as a first feature "on" or "under" a second feature, its meaning can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or just means that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "beneath" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or just means that the horizontal height of the first feature is less than that of the second feature.

[0028] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0029] Refer to Figures 1 to 3 , an embodiment of this application provides a jack structure 10. The jack structure 10 is used for plugging with a pin to achieve electrical conduction. The jack structure 10 includes a plug-in member 100 and a sleeve 200. The plug-in member 100 includes a shaft portion 110 and a claw portion 120. The claw portion 120 is connected to the periphery of one end face of the shaft portion 110. A plurality of claw portions 120 are arranged in a ring around the central axis O of the shaft portion 110, and the end of the claw portion 120 away from the shaft portion 110 is turned inward in the direction close to the central axis O. The claw portion 120 can elastically open and close to clamp the pin. In other words, the pin is inserted into the inner cavity (the plugging cavity 131 mentioned below) formed by the enclosure of the claw portion 120.

[0030] In the above jack structure 10, since the sleeve 200 covers the claw portion 120, the sleeve 200 can limit the opening range of the claw portion 120, restrict the opening angle of the claw portion 120, reduce the probability of elastic fatigue caused by excessive opening angle of the claw portion 120, and improve the service life of the claw portion 120. It can be seen that by limiting the opening range of the claw portion 120 through the sleeve 200, the service life of the electrical connector can be improved.

[0031] Meanwhile, the sleeve 200 covering the outside of the claw portion 120 can also provide protection for the claw portion 120 and reduce the possible external bumps on the claw portion 120. For example, during the assembly process of the jack structure 10, the protection provided by the sleeve 200 for the claw portion 120 can reduce the probability of damage to the claw portion 120 caused by the mutual collision of the jack structures 10.

[0032] It should be noted that since a plurality of claw portions 120 are connected to the periphery of the end face of the shaft portion 110 and the plurality of claw portions 120 are arranged in a ring shape, the plurality of claw portions 120 can cooperate with each other to enclose and form a plugging cavity 131. The plugging cavity 131 is for inserting a pin. After the pin is inserted, each claw portion 120 can press against the pin from all circumferential directions to cooperate with each other to clamp and fix the pin, so as to achieve stable electrical connection.

[0033] Please refer to Figure 3 , in an embodiment, the free end of the sleeve 200 away from the shaft portion 110 is provided with an inward flange 210. One side of the inward flange 210 is connected to the end face of the sleeve 200, and the other side is arc-shaped and turned into the sleeve 200. Since the inward flange 210 turns inward from the end face of the sleeve 200, if there is some alignment deviation when the jack structure 10 is plugged with the pin, the pin can penetrate into the sleeve 200 along the arc-shaped outer surface of the inward flange 210 and be inserted into the plugging cavity 131. In short, setting the inward flange 210 with an arc-shaped inward turn can guide the pin to be inserted into the jack structure 10 and improve the smoothness of the plugging.

[0034] Please refer to Figure 2 and Figure 3 , in an embodiment, a plurality of claw portions 120 distributed in a ring form a plugging portion 130. The plugging portion 130 has the plugging cavity 131 for plugging the pin as described above. The inward flange 210 forms an introduction hole 220 in a ring shape, and the inward flange 210 is coaxially arranged with the shaft portion 110. In the direction pointing from the central axis O to the shaft portion 110, the inner diameter of the introduction hole 220 gradually decreases. The minimum inner diameter of the introduction hole 220 is d1, the minimum inner diameter of the plugging cavity 131 is d2, and the minimum outer diameter of the plugging portion 130 is d3, where d2 ≤ d1 ≤ d3.

[0035] Combined with Figure 2 and Figure 3, in a first aspect, for d1 ≤ d3, since the inner diameter of the insertion hole 220 gradually decreases in the direction along the central axis O pointing towards the shaft portion 110, the location where the minimum inner diameter of the insertion hole 220 is located is also the part closest to the insertion portion 130. Therefore, by setting the minimum inner diameter of the insertion hole 220 to be less than or equal to the minimum inner diameter of the insertion portion 130, there is no radial gap between the inner wall at the minimum inner diameter of the insertion hole 220 and the outer wall of the insertion portion 130. After the pin is inserted into the jack structure 10 along the insertion hole 220, it will not be stuck between the sleeve 200 and the claw portion 120, improving the smoothness of insertion. It can be understood that the outer wall of the insertion portion 130 is the columnar outer wall formed by fitting the outer walls of the plurality of claw portions 120, so it is not contradictory for the insertion portion 130 to have an outer diameter.

[0036] , in a second aspect, d1 ≥ d2. Since the end of the claw portion 120 away from the shaft portion 110 is turned inwards, and the insertion cavity 131 of the insertion portion 130 is formed by the claw portion 120, the minimum inner diameter of the insertion cavity 131 is formed on the side of the insertion cavity 131 away from the shaft portion 110, that is, on the side close to the inwardly turned edge 210. Also, since the pin is inserted into the insertion cavity 131 from the insertion hole 220, the inner diameter of the insertion hole 220 needs to be greater than the minimum inner diameter of the insertion cavity 131 so that the pin can be effectively inserted. As an example, if the inner diameter of the insertion hole 220 is less than the minimum inner diameter of the insertion cavity 131, the pin that can be inserted from the insertion hole 220 usually has a smaller radial dimension than the insertion hole 220, and it is obvious that such a pin is difficult to elastically open the clamping claws and stably contact and cooperate with the claw portion 120.

[0037] Of course, in other embodiments, the insertion hole 220 can also be set to have elastic expansion properties, so that no specific limitation is imposed on the inner diameter size of the insertion hole 220.

[0038] Please continue to refer to Figures 2 to 4 , in an embodiment, an insertion inclined surface 121 is provided at the free end of the claw portion 120 away from the shaft portion 110. The side of the insertion inclined surface 121 close to the shaft portion 110 is located radially inside relative to the side away from the shaft portion 110. Along the central axis O, the projection of the location of the minimum inner diameter of the insertion hole 220 is located on the insertion inclined surface 121. With such a setting, after the pin is inserted into the sleeve 200 along the insertion hole 220, it will also contact the insertion inclined surface 121 to continue to be inserted into the insertion cavity 131 under the guiding action of the insertion inclined surface 121. In other words, the insertion inclined surface 121 will take over the insertion hole 220 to continue guiding the insertion of the pin, improving the smoothness of insertion.

[0039] Please refer to Figure 5 and Figure 6, in one embodiment, the angle of the end of the claw portion 120 away from the shaft portion 110 turning inward toward the central axis O is α, where 0.5° ≤ α ≤ 3°. Since the sleeve 200 covers the claw portion 120, if the inward turning angle of the claw portion 120 is too small, it may lead to insufficient movement space for the claw portion 120. If the inward turning angle of the claw portion 120 is too large, it may lead to an excessive movement range of the claw portion 120, making the sleeve 200 substantially ineffective. By limiting the inward turning angle of the claw portion 120 in this embodiment, the clamping and limiting function of the claw portion 120 can be fully exerted while restricting the movement angle of the claw portion 120.

[0040] Further, different inward turning dimensions of the claw portion 120 can be selected according to different radial dimensions of the pin. In other words, in this application, by controlling the inward turning angle of the claw portion 120, the jack structure 10 can be adaptively plugged with different types of pins.

[0041] Please refer to Figure 2 and Figure 3 , in one embodiment, the claw portion 120 can be arc-shaped to more fully contact and clamp the pin. It can be understood that the plugging portion 130 formed by a plurality of claw portions 120 can also be in the shape of a cylinder or a circular tube.

[0042] Further, at least part of the structure between adjacent claw portions 120 is hollowed out to facilitate sufficient opening and closing movement space for each claw portion 120.

[0043] Please refer to Figure 5 , in one embodiment, the shaft portion 110 includes a first section 111, a second section 112, and a step 113, and the step 113 is provided between the first section 111 and the second section 112. The outer diameter of the first section 111 is smaller than that of the second section 112, and the sleeve 200 is sleeved on the first section 111 and abuts against the step 113 to achieve positioning, improving the convenience of installing the sleeve 200.

[0044] Further, the claw portion 120 can be provided at the end of the first section 111 away from the second section 112.

[0045] Please refer to Figure 1 and Figure 4 , in one embodiment, the sleeve 200 is coaxially arranged with the second section 112, and the outer diameter of the sleeve 200 is equal to the outer diameter of the second section 112. Thus, the outer circumferential surface of the sleeve 200 and the outer circumferential surface of the second section 112 can be on the same cylindrical surface, making the overall shape of the jack structure 10 more regular and facilitating installation.

[0046] Please refer to Figure 5In one embodiment, a wire hole 114 is provided at one end of the shaft portion 110 away from the claw portion 120. The wire hole 114 is used for the wire to pass through, and the hole wall of the wire hole 114 is used to be fixedly connected to the wire. The shaft portion 110 is also provided with a connecting hole 115, and the connecting hole 115 connects the wire hole 114 with the outside of the shaft portion 110. It can be understood that one end of the jack structure 10 is used to plug into the pin, and the other end is used to connect with the wire, so that the pin and the wire are electrically conductive. When the jack structure 10 is used with wires, the wires are prone to heat up. In this embodiment, by providing the connecting hole 115, the heat in the wire hole 114 can be discharged, reducing the probability of heat being trapped in the wire hole 114, causing damage to the wire or the jack structure 10, or the detachment of the two.

[0047] Furthermore, the wire hole 114 can be recessed in the shaft portion 110 along the central axis O. The connecting hole 115 and the wire hole 114 are both opened in the second section 112. The hole wall of the wire hole 114 can be fixed to the wire by crimping. In short, after the wire is inserted into the wire hole 114, the shaft portion 110 can be squeezed from the outside to tighten the inner wall of the wire hole 114 to be fixed to the wire hole 114.

[0048] See also Figure 4 and Figure 5 In one embodiment, a fixing ring 116 is protruded from the outer periphery of the shaft portion 110, and the fixing ring 116 is used to be installed and fixed with a fixing member (such as the insulator mentioned below). It can be understood that the socket structure 10 can usually be installed and fixed in the insulator, so the fixing ring 116 can be connected and fixed to the insulator alone, or the fixing ring 116 can be fixed to the insulator in cooperation with other elements. For example, the fixing ring 116 can be fixed by interference fit with the insulator. Alternatively, the insulator can be used with a locking element to fix the fixing ring 116 together.

[0049] An embodiment of the present application further provides an electrical connector, which includes a fixing member and a socket structure 10 as described in each embodiment, wherein the socket structure 10 is installed on the fixing member.

[0050] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A jack structure, characterized in that: The jack structure comprises: A plug connector, the plug connector comprising a shaft portion and a claw portion, the claw portion being connected to the periphery of one end surface of the shaft portion, a plurality of the claw portions being arranged in a ring around the central axis of the shaft portion, and the claw portion being turned inwardly toward the central axis at one end away from the shaft portion, and the claw portion being elastically openable and closable for clamping a pin; A sleeve is sleeved with the shaft portion and covers the outside of the claw portion to limit the opening range of the claw portion.

2. The jack structure according to claim 1, characterized in that: The free end of the sleeve away from the shaft portion is provided with an inner flange, one side of the inner flange is connected to the end surface of the sleeve, and the other side is folded into the sleeve in an arc shape.

3. The jack structure according to claim 2, characterized in that: The plurality of claws distributed in an annular shape form an inserting portion, the inserting portion has an inserting cavity for the inserting pin to be inserted, the inner flange is annular to form an introduction hole, and the inner flange is coaxially arranged with the shaft portion; In the direction along the central axis pointing to the shaft portion, the inner diameter of the introduction hole gradually decreases, the minimum inner diameter of the introduction hole is d1, the minimum inner diameter of the plug-in cavity is d2, and the minimum outer diameter of the plug-in portion is d3, wherein d2≤d1≤d3.

4. The jack structure according to claim 3, characterized in that: The free end of the claw away from the shaft portion is provided with an introduction slope, and the side of the introduction slope close to the shaft portion is located radially inward relative to the side away from the shaft portion; along the central axis, the projection of the minimum inner diameter of the introduction hole is located on the introduction slope.

5. The jack structure according to claim 1, characterized in that: The angle of inward turning of one end of the claw away from the shaft toward the central axis is α, wherein 0.5°≤α≤3°.

6. The jack structure according to claim 1, characterized in that: The shaft portion includes a first section, a second section, and a step disposed between the first section and the second section. The outer diameter of the first section is smaller than that of the second section. The sleeve is sleeved on the first section and abuts against the step.

7. The jack structure according to claim 6, characterized in that: The sleeve is coaxially arranged with the second section, and the outer diameter of the sleeve is equal to the outer diameter of the second section.

8. The jack structure according to claim 1, characterized in that: A wire hole is provided at one end of the shaft away from the claw portion, the wire hole is for the wire to pass through, the hole wall of the wire hole is used to be fixedly connected with the wire, and the shaft portion is also provided with a connecting hole, which connects the wire hole with the outside of the shaft portion.

9. The jack structure according to claim 1, characterized in that: A fixing ring is protruded from the outer periphery of the shaft portion, and the fixing ring is used for being installed and fixed with a fixing member.

10. An electrical connector, characterized in that: The electrical connector comprises a fixing member and a socket structure as claimed in any one of claims 1 to 9, wherein the socket structure is mounted on the fixing member.

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