CN213026754U - Self-locking type anti-crushing mounting structure of electric connector contact pin - Google Patents

Abstract

A self-locking anti-crushing mounting structure of an electric connector contact pin relates to the technical field of electric connectors and comprises a positioning clamp spring sleeve, a contact pin and an insulating mounting seat, wherein a shaft shoulder clamping column is arranged in the middle of the contact pin in an outward protruding mode; the contact surface of the positioning clamp spring sleeve and the middle annular table is a conical surface; this prevent mounting structure that crushes from locking-type can effectively improve the life of contact pin mount pad, prevents that location jump ring cover from deviating from inefficacy.

Description

Self-locking type anti-crushing mounting structure of electric connector contact pin

Technical Field

The utility model belongs to the technical field of the electric connector technique and specifically relates to a self-locking type anti-crushing mounting structure of electric connector contact pin is related to.

Background

As is known, a pin mounting structure of a pin connector is related to the assembly difficulty and the service life of the connector, that is, to ensure that the pin of the connector is convenient to mount and the mounted pin is fixed and stable, and is not easy to loosen after being plugged and pulled for a long time; the applicant discloses a connecting structure of a tail handle and a rear sleeve of a contact pin in a jack contact element for an optical cable connector in a Chinese utility model with the publication number of CN201007751, wherein a positioning snap spring is arranged in an annular cavity of the rear sleeve, so that even if the contact pin is inserted and installed, the inserted contact pin can be axially positioned by utilizing a step surface of the rear sleeve and a reed of the positioning snap spring, and the purpose of fixing the contact pin is achieved; later, the mounting structure for fixing the pins by using the positioning spring is also applied to other connectors, such as a circular electric connector, but after long-term popularization and application, the following problems and defects are found to exist: because the mount pad of electric connector contact pin needs to adopt non-metallic insulating material, its rigidity is not as than contact pin and location jump ring, and at the in-process that the contact pin was pegged graft, the atress of contact pin can be transmitted to the step face of mount pad contact pin hole through the location jump ring on, if the atress of contact pin is too big or through long-term grafting use, the mount pad step that corresponds is squashed very easily, causes the location jump ring to deviate from inefficacy, and contact pin mounted position appears becoming flexible, influences the life of whole connector.

Disclosure of Invention

In order to overcome not enough among the background art, the utility model discloses an electric connector contact pin prevent conquassation mounting structure from locking-type can effectively improve the life of contact pin mount pad, prevents that location jump ring cover from deviating from inefficacy.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a self-locking anti-crushing mounting structure of an electric connector contact pin comprises a positioning clamp spring sleeve, a contact pin and an insulating mounting seat, wherein a shaft shoulder clamping column is arranged in the middle of the contact pin in an outward protruding mode, a contact pin hole penetrating through the end face is formed in the insulating mounting seat, a head end ring platform and a middle ring platform are respectively arranged in the head end and the middle of the contact pin hole in an inward protruding mode, the positioning clamp spring sleeve is arranged in the contact pin hole in a penetrating mode, two end faces of the positioning clamp spring sleeve are respectively in corresponding contact with corresponding ring platform surfaces of the head end ring platform and the middle ring platform, a plurality of clamp claws are arranged on the end wall surface, close to the head end ring platform, of the positioning clamp spring sleeve in a circumferential bending mode, the outer ends of the clamp claws and the head end ring platform are; the contact surface of the positioning clamp spring sleeve and the middle annular table is a conical surface.

Further, the taper angle of the conical surface is larger than 120 degrees and smaller than 180 degrees.

Further, the taper angle of the taper surface is set to 160 degrees.

Furthermore, the contact surface of the positioning clamp spring sleeve corresponding to the middle annular table is an external conical surface.

Further, insulating mount pad mainly comprises limiting plate and the mounting panel that corresponds detachable fixed connection, head end ring platform and middle ring platform structure as an organic whole with limiting plate and mounting panel respectively.

Furthermore, the contact surface of the positioning clamp spring sleeve corresponding to the middle annular table is an inner conical surface.

Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:

the utility model discloses an electric connector contact pin prevent conquassation mounting structure from locking-type, under overall installation structural design and insulating material's restriction, establish to the conical surface that has certain inclination through the contact surface with location jump ring cover and middle part ring platform, when making middle part ring platform contradict the atress with location jump ring cover, for traditional plane contact, the utility model discloses can utilize the auto-lock principle, make the horizontal component of conical surface be less than frictional force, avoid appearing the phenomenon of location jump ring cover slippage, simultaneously, the normal pressure that acts on the conical surface diminishes, and because the area of conical surface is greater than the area of traditional plane contact, further reduces the normal pressure to middle part ring platform, has reduced the probability that middle part ring platform is deviate from by location jump ring cover after conquassation, has avoided the easy not hard up phenomenon that appears of contact pin, has improved the total quality and the life of connector.

Drawings

Fig. 1 is a schematic view of the present invention;

FIG. 2 is an enlarged schematic view of section A of FIG. 1;

FIG. 3 is a schematic structural diagram of the positioning clamp spring sleeve;

FIG. 4 is a schematic top view of the structure of FIG. 3;

FIG. 5 is a schematic left side view of the structure of FIG. 3;

FIG. 6 is an enlarged schematic view of section B of FIG. 3;

FIG. 7 is a force analysis diagram of the pin;

FIG. 8 is a schematic view of a force analysis of a conventional positioning clamp spring;

FIG. 9 is a schematic view of the force analysis of the outer conical surface of the positioning clamp spring sleeve;

FIG. 10 is a force analysis diagram of the central ring table.

In the figure: 1. a pin inserting hole; 2. a middle ring platform; 3. positioning a clamp spring sleeve; 301. a claw; 302. an outer conical surface; 4. a head end loop station; 5. inserting a pin; 501. the shaft shoulder is clamped with the column; 6. a conical surface.

Detailed Description

The present invention can be explained in detail by the following embodiments, and the purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention, and the present invention is not limited to the following embodiments; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc., it is only corresponding to the drawings of the present application, and for the convenience of describing the present invention, it is not intended to indicate or imply that the device or element referred to must have a particular orientation:

example 1:

the self-locking anti-crushing mounting structure of the electric connector contact pin described by combining the attached figures 1-6 comprises a positioning clamp spring sleeve 3, a contact pin 5 and an insulating mounting seat, wherein a shaft shoulder clamp column 501 is outwards protruded at the middle part of the contact pin 5, the insulating mounting seat is provided with a contact pin hole 1 penetrating through the end surface, a head end annular table 4 and a middle annular table 2 are respectively inwards protruded at the head end and the middle part of the contact pin hole 1, the outer diameter of the shaft shoulder clamp column 501 is matched with the inner diameter of the positioning clamp spring sleeve 3, the outer diameter of the shaft shoulder clamp column 501 is larger than the inner diameter of the head end annular table 4, the inner diameter of the positioning clamp spring sleeve 3 is equal to the inner diameter of the middle annular table 2, and the contact; the positioning clamp spring sleeve 3 penetrates through the pin inserting hole 1, two end faces of the positioning clamp spring sleeve 3 are correspondingly contacted with corresponding ring table faces of the head end ring table 4 and the middle ring table 2 respectively, a plurality of clamping jaws 301 are arranged on the positioning clamp spring sleeve 3 close to the end wall face of the head end ring table 4 in a circumferential inward bending mode, and the outer ends of the clamping jaws 301 and the head end ring table 4 are abutted with two end faces of the shaft shoulder clamping column 501 respectively to axially position a pin inserting 5; the contact surface of the positioning clamp spring sleeve 3 and the middle annular table 2 is set to be a conical surface 6, the contact surface of the positioning clamp spring sleeve 3 corresponding to the middle annular table 2 is set to be an external conical surface 302 according to needs, and meanwhile, the contact surface corresponding to the middle annular table 2 is set to be an adaptive internal conical surface, so that the positioning clamp spring sleeve 3 can be conveniently inserted and installed in place from the port of the pin inserting hole 1 far away from the head end annular table 4;

referring to fig. 7-10, the force F1 of the insertion pin 5 is F2+ F3 is F4, and the axial force F4 is further decomposed into a positive pressure F5 and a component force F6 along the tapered surface, as can be seen from the figure, F5 is less than F4, and in addition, since the area a1 of the tapered surface 6 is greater than the area a of the original step and a is less than a1, the compressive stress calculation δ 1 is F5/a1 is less than F4/a, that is, the positive pressure becomes smaller, the force-bearing area increases, and the compressive stress δ 1 becomes smaller, which is safer compared with the prior art; by reasonably setting the taper angle, when the middle ring platform is abutted against the positioning clamp spring sleeve and stressed, the horizontal component force of the taper surface can be smaller than the friction force by utilizing the self-locking principle, so that the phenomenon of slipping of the positioning clamp spring sleeve is avoided, meanwhile, the positive pressure on the middle ring platform is reduced, the probability of the slipping of the positioning spring sleeve after the middle ring platform is crushed can be reduced, the phenomenon that a contact pin is easy to loosen is avoided, and the overall quality and the service life of the connector are improved; the taper angle of the taper 6 is greater than 120 degrees and less than 180 degrees, i.e. the angle a is greater than 0 degrees and less than 30 degrees, as required, and calculation and practice have shown that the optimum reasonable taper angle is set to 160 degrees, i.e. the angle a is set to 15 degrees.

Example 2:

different from embodiment 1, the insulating mount pad mainly comprises limiting plate and the mounting panel that corresponds detachable fixed connection, head end loop platform 4 and middle part loop platform 2 respectively with limiting plate and mounting panel structure as an organic whole, just can establish the contact surface that location jump ring cover 3 corresponds middle part loop platform 2 into the interior conical surface, the contact surface that also department loop platform 2 corresponds establishes to the outer conical surface of adaptation, be convenient for location jump ring cover 3 can insert the installation from the port that contact pin hole 1 is close to head end loop platform 4 and target in place, and when contact pin 5 atress, more can avoid location jump ring cover 3 slippage.

The part of the utility model not detailed is prior art.

Claims (6)

1. A self-locking anti-crushing mounting structure of an electric connector contact pin comprises a positioning clamp spring sleeve (3), the contact pin (5) and an insulating mounting seat, wherein a shaft shoulder clamp column (501) is arranged in the middle of the contact pin (5) in an outward protruding mode, the insulating mounting seat is provided with a contact pin hole (1) penetrating through the end face, a head end ring platform (4) and a middle ring platform (2) are arranged in the head end and the middle of the contact pin hole (1) in an inward protruding mode respectively, the positioning clamp spring sleeve (3) penetrates through the contact pin hole (1), two end faces of the positioning clamp spring sleeve (3) are in corresponding contact with corresponding ring platform faces of the head end ring platform (4) and the middle ring platform (2) respectively, a plurality of clamp claws (301) are arranged on the end wall face of the positioning clamp spring sleeve (3) close to the head end ring platform (4) in a circumferential bending mode, the outer end and the head end ring platform (4) of each clamp claw (301) are in contact with the shaft shoulder clamp column (501), the method is characterized in that: the contact surface of the positioning clamp spring sleeve (3) and the middle annular table (2) is a conical surface (6).

2. The self-locking anti-crush mounting structure of an electrical connector pin as claimed in claim 1, wherein: the taper angle of the taper surface (6) is more than 120 degrees and less than 180 degrees.

3. The self-locking anti-crush mounting structure of the electrical connector pin as claimed in claim 2, wherein: the taper angle of the taper surface (6) is set to 160 degrees.

4. The self-locking anti-crush mounting structure of an electrical connector pin as claimed in claim 1, wherein: the contact surface of the positioning clamp spring sleeve (3) corresponding to the middle annular table (2) is set to be an external conical surface (302).

5. The self-locking anti-crush mounting structure of an electrical connector pin as claimed in claim 1, wherein: the insulation mounting base mainly comprises a limiting plate and a mounting plate which correspond to each other and can be detachably and fixedly connected, and the head end ring platform (4) and the middle ring platform (2) are respectively in an integrated structure with the limiting plate and the mounting plate.

6. The self-locking anti-crush mounting structure of the electrical connector pin as claimed in claim 5, wherein: the contact surface of the positioning clamp spring sleeve (3) corresponding to the middle annular table (2) is an inner conical surface.

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