Telescopic connector

Abstract

The utility model provides a telescopic connector, which comprises a needle cylinder, an ejector pin and an elastic piece, the needle cylinder is internally provided with an inner cavity, the top end of the inner cavity is provided with an opening, and the ejector pin is telescopically arranged in the inner cavity from the opening along the inside and outside direction. The top end of the elastic piece abuts against the positioning protruding block, and the bottom end of the elastic piece abuts against the base table and is arranged on the outer side of the guide column in a sleeving mode, so that the elastic piece and the ejector pin move coaxially, and the part, stretching into the needle cylinder, of the ejector pin and the needle cylinder form a more stable contact point. The ejector pin is sleeved with the ejector pin through mutual cooperation of the positioning step, the positioning base and the positioning rod, it is guaranteed that the ejector pin cannot be separated from the needle cylinder when moving up and down along the needle cylinder, the straightness of the ejector pin in the moving process and the coaxiality of the ejector pin in contact with a PCB are guaranteed, the reliability of electrical connection is improved, and therefore the stability of contact between the ejector pin and the needle cylinder is enhanced; therefore, the stability of the telescopic connector is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of connectors, and more specifically, particularly relates to a retractable connector. Background Art

[0002] At present, with the continuous development of modern communication technology, there are more and more types of electronic products, such as mobile phones, Bluetooth headsets, shared power banks, tablet computers, digital cameras and other widely used products. Connectors are often used in these types of electronic products. The main function of connectors is to play the role of electrical connection and signal transmission between two components. It is one of the essential basic components for the electrical connection of the entire circuit system.

[0003] When the existing retractable connector is in use, the connecting pin and sleeve cannot make stable contact, so a stable connection cannot be formed, which leads to large fluctuations in contact resistance and unstable structure, thereby shortening the service life of the retractable connector. The structure is unstable and the practicability is not strong, which cannot meet people's usage needs.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a retractable connector is provided to achieve a more practical purpose. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a retractable connector, which is achieved by the following specific technical means:

[0006] A retractable connector comprises a syringe, an ejector pin and an elastic member, wherein an inner cavity is defined in the syringe, an opening is defined in the top end of the inner cavity, the ejector pin is retractably installed in the inner cavity along the inward and outward directions from the opening, a shoulder is convexly provided on the outer peripheral surface of the ejector pin located in the inner cavity, a mounting groove is defined in the inner bottom of the ejector pin, a positioning protrusion is connected to the top end of the mounting groove, the top end of the elastic member abuts on the positioning protrusion, a positioning base is defined in the inner bottom of the inner cavity, a plurality of positioning rods are equidistantly distributed in an annular manner on the top end of the positioning base, a positioning step is convexly provided on the outer peripheral surface of the bottom end of the ejector pin, a plurality of the positioning rods all slide through the positioning step, a base is defined in the positioning base, a guide column is integrally formed on the top end of the base, the bottom end of the elastic member abuts on the base, and is sleeved on the outer side of the guide column.

[0007] Furthermore, the installation groove faces the bottom surface of the inner cavity and is open, and the top end of the guide column slides into the interior of the installation groove.

[0008] Furthermore, a guide cavity is formed inside the plurality of positioning rods, and the base, the bottom end of the elastic member and the guide column are all arranged inside the guide cavity.

[0009] Furthermore, a plurality of through holes are equidistantly arranged in an annular shape on the positioning step, and the top ends of the plurality of positioning rods slide through the corresponding through holes.

[0010] Furthermore, the outer wall of the shoulder and the positioning step are slidably fitted on the inner wall of the inner cavity.

[0011] Furthermore, a base is provided on the outer peripheral wall of the syringe near the bottom end, the syringe and the base are integrally formed, and a protruding pattern is provided on the outer wall of the base.

[0012] Furthermore, the end surface of the ejector away from the bottom surface of the syringe is arranged in an arc shape, and the elastic member is arranged as a spring.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. In the utility model, when the retractable connector connects two PCB boards, the top end of the elastic member abuts against the positioning protrusion, the bottom end of the elastic member abuts against the base, and is sleeved on the outer side of the guide column, so that the elastic member and the ejector pin move coaxially, so that the part of the ejector pin extending into the syringe forms a more stable contact point with the syringe. At the same time, the ejector pin is sleeved with the ejector pin through the mutual cooperation of the positioning step, the positioning base and the positioning rod, so that the ejector pin will not be separated from the syringe when it moves up and down along the syringe, and the straightness of the ejector pin when it moves and the coaxiality when it contacts the PCB board are guaranteed, so as to improve the reliability of the electrical connection, thereby enhancing the stability of the contact between the ejector pin and the syringe, and further improving the stability of the retractable connector;

[0015] 2. The ejector pin is always in contact with the PCB board under the action of the elastic part, and there will be no poor contact. When the retractable connector is in a compressed state, the elastic part has to bear a large force. The positioning bumps, the base and the guide column are used to position the two ends of the elastic part and guide and limit it, so as to prevent the elastic part from bending when subjected to a large force, so that the elastic part can be normally in a compressed state, thereby improving the telescopic performance of the retractable connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structure diagram of the utility model. Figure 1 .

[0017] Figure 2 This is a three-dimensional structure diagram of the utility model. Figure 2 .

[0018] Figure 3 It is a schematic diagram of the main cross-sectional structure of the utility model.

[0019] Figure 4 The utility model Figure 3A is an enlarged schematic diagram.

[0020] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0021] 1. Syringe; 2. Ejector; 3. Inner cavity; 4. Shoulder; 5. Opening; 6. Mounting groove; 7. Positioning protrusion; 8. Elastic member; 9. Positioning step; 10. Positioning base; 11. Positioning rod; 12. Through hole; 13. Guide cavity; 14. Base; 15. Guide column; 16. Base; 17. Protruding pattern. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0023] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example:

[0026] As attached Figure 1 To Attachment Figure 4 As shown:

[0027] The utility model provides a telescopic connector, comprising a syringe 1, an ejector pin 2 and an elastic member 8. An inner cavity 3 is provided in the syringe 1, an opening 5 is provided at the top end of the inner cavity 3, the ejector pin 2 is telescopically installed in the inner cavity 3 from the opening 5 along the inner and outer directions, a shoulder 4 is convexly provided on the outer peripheral surface of the ejector pin 2 located in the inner cavity 3, a mounting groove 6 is provided in the inner bottom of the ejector pin 2, a positioning convex block 7 is connected to the top end of the mounting groove 6, the top end of the elastic member 8 abuts against the positioning convex block 7, a positioning base 10 is provided at the inner bottom of the inner cavity 3, a plurality of positioning rods 11 are annularly and equidistantly distributed on the top of the positioning base 10, a positioning step 9 is convexly provided on the outer peripheral surface of the bottom end of the ejector pin 2, and a plurality of positioning rods 11 are slidably penetrated on the positioning step 9, a base 14 is provided in the positioning base 10, a guide column 15 is integrally formed at the top end of the base 14, the bottom end of the elastic member 8 abuts against the base 14, and is sleeved on the outer side of the guide column 15.

[0028] In other embodiments, the mounting groove 6 faces the bottom surface of the inner cavity 3 and is open, the top end of the guide column 15 slides into the interior of the mounting groove 6, and the inner cavity 3 and the mounting groove 6 are coaxially arranged to ensure the coaxiality of the ejector pin 2 when extending and retracting in the syringe 1.

[0029] In other embodiments, a guide cavity 13 is formed between the plurality of positioning rods 11, and the base 14, the bottom end of the elastic member 8 and the guide column 15 are all arranged inside the guide cavity 13. The guide cavity 13 is provided to facilitate the installation of the base 14, the bottom end of the elastic member 8 and the guide column 15, and also to provide a telescopic space for the telescopic bottom end of the ejector pin 2.

[0030] In other embodiments, a plurality of through holes 12 are equidistantly provided in a ring shape on the positioning step 9, and the top ends of the plurality of positioning rods 11 slide through the corresponding through holes 12. By providing the plurality of through holes 12, the positioning step 9 can slide back and forth smoothly on the plurality of positioning rods 11 when the ejector pin 2 is extended and retracted in the syringe 1.

[0031] In other embodiments, the outer walls of the shoulder 4 and the positioning step 9 are slidably fitted on the inner wall of the inner cavity 3. When the ejector pin 2 slides up and down in the inner cavity 3 of the syringe 1, the shoulder 4 and the positioning step 9 slide up and down in the inner cavity 3 synchronously, which can guide the ejector pin 2 and make it more stable when it is extended and retracted.

[0032] In other embodiments, a base 16 is provided on the outer peripheral wall of the syringe 1 near the bottom end, the syringe 1 and the base 16 are integrally formed, and a protruding pattern 17 is provided on the outer wall of the base 16 to increase the friction force of taking the syringe 1.

[0033] In other embodiments, the end surface of the ejector pin 2 away from the bottom surface of the syringe 1 is arranged in an arc shape, and the elastic member 8 is arranged as a spring. The top of the ejector pin 2 elastically contacts the PCB board under the drive of the elastic member 8, and the bottom end of the ejector pin 2 contacts the syringe 1. Under the action of the elastic member 8, the ejector pin 2 always contacts the PCB board, and poor contact will not occur.

[0034] The specific usage and function of this embodiment are as follows:

[0035] In the utility model, when the retractable connector connects two PCB boards, the bottom end of the syringe 1 is welded and fixed to the lower PCB board, and the top of the ejector pin 2 elastically contacts the upper PCB board under the drive of the elastic member 8, and the bottom end of the ejector pin 2 contacts the syringe 1. The ejector pin 2 always contacts the upper PCB board under the action of the elastic member 8, and poor contact will not occur, so that the two PCB boards are connected through the retractable connector, and then the signals and data between the two PCB boards are transmitted;

[0036] The top end of the elastic member 8 abuts against the positioning protrusion 7, and the bottom end of the elastic member 8 abuts against the base 14, and is sleeved on the outer side of the guide column 15, so that the elastic member 8 and the ejector pin 2 move coaxially, so that the part of the ejector pin 2 extending into the syringe 1 forms a more stable contact point with the syringe 1, and is guided and limited, so as to prevent the elastic member 8 from bending when subjected to a large force, so that the elastic member 8 can be normally in a compressed state, thereby improving the telescopic performance of the retractable connector, and when the ejector pin 2 is pressed down, the elastic member 8 will be compressed downward as the ejector pin 2 is pressed down, and the elastic member 8 is slowly compressed and sleeved on the guide column 15. At the same time, the positioning step 9 continues to move downward with the ejector pin 2, and multiple positioning rods 11 gradually pass through the through hole 12 on the positioning step 9, ensuring that the ejector pin 2 will not separate from the syringe 1 when it moves up and down along the syringe 1, and ensuring the straightness of the ejector pin 2 when it moves and the coaxiality when it contacts the PCB board, thereby improving the reliability of the electrical connection, thereby enhancing the stability of the contact between the ejector pin 2 and the syringe 1, and further improving the stability of the retractable connector.

[0037] It should be noted that the specific model specifications of the syringe 1 and the ejector pin 2 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it will not be described in detail. The syringe 1 and the ejector pin 2 are devices or equipment existing in the prior art, or are devices or equipment that can be realized in the prior art. Their power supply, specific composition and principles are clear to those skilled in the art and are common knowledge in the field, so they will not be described in detail.

[0038] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A retractable connector, characterized in that: The invention comprises a needle barrel (1), an ejector pin (2) and an elastic member (8), wherein an inner cavity (3) is provided in the needle barrel (1), an opening (5) is provided at the top end of the inner cavity (3), the ejector pin (2) is telescopically installed in the inner cavity (3) from the opening (5) along the inner and outer directions, a shoulder (4) is convexly provided on the outer peripheral surface of the ejector pin (2) located in the inner cavity (3), an installation groove (6) is provided at the bottom of the ejector pin (2), a positioning protrusion (7) is connected to the top end of the installation groove (6), and the top end of the elastic member (8) abuts against the positioning protrusion (7) A positioning base (10) is provided at the bottom of the inner cavity (3), a plurality of positioning rods (11) are equidistantly distributed in a ring shape on the top of the positioning base (10), a positioning step (9) is convexly provided on the outer peripheral surface of the bottom end of the ejector pin (2), and the plurality of positioning rods (11) are slidably passed through the positioning step (9), a base (14) is provided in the positioning base (10), a guide column (15) is integrally formed at the top of the base (14), and the bottom end of the elastic member (8) abuts against the base (14) and is sleeved on the outer side of the guide column (15).

2. The retractable connector according to claim 1, characterized in that: The installation groove (6) faces the bottom surface of the inner cavity (3) and is open, and the top end of the guide column (15) slides into the interior of the installation groove (6).

3. The retractable connector according to claim 1, characterized in that: A guide cavity (13) is formed inside the plurality of positioning rods (11), and the base (14), the bottom end of the elastic member (8) and the guide column (15) are all arranged inside the guide cavity (13).

4. The retractable connector according to claim 1, characterized in that: The positioning step (9) is provided with a plurality of through holes (12) at equal intervals in an annular shape, and the top ends of the plurality of positioning rods (11) are slidably inserted into the corresponding through holes (12).

5. The retractable connector according to claim 1, characterized in that: The outer walls of the shoulder (4) and the positioning step (9) are slidably fitted on the inner wall of the inner cavity (3).

6. The retractable connector according to claim 1, characterized in that: A base (16) is provided on the outer peripheral wall of the syringe (1) near the bottom end. The syringe (1) and the base (16) are integrally formed, and a protruding pattern (17) is provided on the outer wall of the base (16).

7. The retractable connector according to claim 1, characterized in that: The end surface of the ejector pin (2) away from the bottom surface of the syringe (1) is arranged in an arc shape, and the elastic member (8) is arranged as a spring.

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