CN110661120A

CN110661120A - Elastic spring claw jack

Info

Publication number: CN110661120A
Application number: CN201910905926.8A
Authority: CN
Inventors: 张星; 陈俊明; 杨向前
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2020-01-07

Abstract

The invention relates to an elastic spring claw jack which comprises a rear sleeve and a spring claw assembled in the rear sleeve jack, wherein a limiting step I for limiting the tail end of the spring claw and a trapezoidal limiting step II matched with a waist-contracting part in the middle of the spring claw are arranged in the jack of the rear sleeve, the spring claw comprises an end belt and a plurality of elastic spring leaves which are arranged at intervals and connected with the end belt, the middle part of each spring leaf is contracted, the tail end of each spring leaf is outwards expanded relative to the middle waist-contracting part of each spring leaf, the middle waist-contracting part of each spring leaf is also provided with a bulge which protrudes outwards and is used for increasing the electric connection reliability between the spring claw and the rear sleeve, the tail end of each spring leaf is limited between the limiting step I and the trapezoidal limiting step II, and the middle waist-contracting part of each spring leaf is surrounded by the trapezoidal limiting step II and is limited by the trapezoidal limiting. The invention can realize the efficient assembly of the spring claw, save the assembly time, and improve the plugging and unplugging life of the jack while meeting the reliability of electric connection.

Description

Elastic spring claw jack

Technical Field

The invention relates to the technical field of connectors, in particular to an elastic spring claw jack.

Background

The spring claw jack, the connecting piece in the jack sets up to the spring claw formula promptly, and the contact pin realizes electrical connection with the contact of spring claw after the contact pin inserts the jack. The diameter of an orifice of an existing crown spring or spring claw jack is smaller than the inner diameter of the existing orifice through the forms of orifice diameter changing, machining, closing up or orifice check ring assembling and the like, so that the crown spring and the spring claw are blocked, the crown spring and the spring claw are prevented from being separated in the opposite insertion process of a contact pin jack, the structure is complex in assembling, and the assembling time is long. And the service life of the existing crown spring jack is generally short, the existing crown spring jack is not resistant to oblique plugging, the gripping force of the spring claw on the contact pin is reduced after plugging for many times, the connection stability is reduced, and the wear of the contact pin is also serious.

Disclosure of Invention

In order to overcome the defects, the invention provides the elastic spring claw jack, which realizes the efficient assembly of the spring claw by changing the structural design, saves the assembly time, and improves the plugging and unplugging service life and the oblique plugging and unplugging resistance of the jack while meeting the electric connection reliability.

The invention solves the technical problem by adopting the following technical scheme that the elastic spring claw jack provided by the invention comprises a rear sleeve and a spring claw assembled in the rear sleeve jack, wherein a limiting step I for limiting the tail end of the spring claw and a trapezoidal limiting step II matched with a middle waisting part of the spring claw are arranged in the jack of the rear sleeve, the spring claw comprises an end belt and a plurality of elastic spring leaves which are connected with the end belt and are arranged at intervals, the middle part of each spring leaf is waisted, the middle waisting part is also provided with a bulge which protrudes towards the outside of the spring claw and is used for increasing the electric connection reliability between the spring claw and the rear sleeve, the tail end of each spring leaf is limited between the limiting step I and the trapezoidal limiting step II, and the middle waisting part of each spring leaf is surrounded by the trapezoidal limiting step II and is limited by the trapezoidal limiting step II to prevent the spring claw from falling off when being plugged in and unplugged from a contact pin.

Further, the middle waisted portion of the spring plate comprises a first inclined surface, a second inclined surface and a platform positioned between the first inclined surface and the second inclined surface, and the protrusion is arranged on the platform.

Furthermore, the bulges and the platform are integrated to increase the strength of the spring plate so as to improve the plugging resistance of the spring claw.

Furthermore, the tail ends of a plurality of reeds arranged at intervals are distributed in a circular shape to form the tail ends of the spring claws, and the diameters of the tail ends of the spring claws are the same as or slightly larger than the diameter of the end belt.

Furthermore, when the pin hole is inserted oppositely, the contact pin and the spring claw are in interference fit, so that the protrusion is in close contact with the rear sleeve, the reliability of electric connection between the spring claw and the rear sleeve is ensured, and the self-locking force between the middle waist part of the reed and the trapezoidal limiting step II is increased.

Compared with the prior art, the invention has the following advantages:

the middle waist part of the reed is provided with the bulge, so that the reliability of the electric connection between the spring claw and the rear sleeve can be ensured, the plugging resistance of the spring claw is enhanced, and the service life of the spring claw is prolonged. The self-locking force between the spring claw and the rear sleeve is ensured by arranging the trapezoidal limiting step II matched with the middle waist-contracting part of the spring in the rear sleeve, and the spring claw is prevented from being separated in the plugging process. According to the invention, the boss is additionally arranged in the middle of the spring claw, so that the oblique insertion and pulling resistance of the jack is improved. In addition, the spring claw does not need to be blocked in the forms of reducing the orifice, machining, closing up or assembling a retainer ring on the orifice and the like, so that the efficient assembly of the spring claw can be realized, the assembly time is saved, and the plugging and pulling life of the jack is prolonged while the electrical connection reliability is met.

Drawings

Fig. 1 is a partial cross-sectional view of the present invention.

Fig. 2 is a right side view of fig. 1.

Fig. 3 is a left side view of fig. 1.

Fig. 4 is a schematic structural view of the spring claw.

Fig. 5 is a left side view of fig. 4.

Element and symbol description:

1: rear cover, 2: spring claw, 3: spacing step I, 4: and a limiting step II, 5: end band, 6: reed, 7: reed tail, 8: first slope, 9: second slope, 10: platform, 11: projection, 12: opening, 13: slope i, 14: bevel II, 15: the spacing between the reeds.

Detailed Description

In order to further illustrate the technical means and technical effects adopted by the present invention, the present invention is described in detail below with reference to the examples.

It should be noted that: the terms "front end", "rear end", etc. indicating the orientation of the present invention are based on the illustrated orientation or positional relationship, and are only for convenience of describing the present invention, and thus, should not be construed as limiting the present invention. In contrast, "leading" refers to the left end of fig. 1 and 4, and "trailing" refers to the right end of fig. 1 and 4.

As shown in figure 1, the spring claw jack comprises a rear sleeve 1 and a spring claw 2 assembled in the rear sleeve, a limiting step I3 used for limiting the tail end of the spring claw and a trapezoidal limiting step II 4 matched with the middle waist of the spring claw are arranged in the jack of the rear sleeve, the spring claw comprises a coiled end belt 5 with an opening and a plurality of elastic spring leaves 6 connected with the end belt at intervals, and the cross section of an inner cavity of the spring claw is circular and used for being inserted into a contact pin. The middle part of the reed is waisted, the tail end 7 of the reed is expanded outwards relative to the middle part of the reed, the tail ends of a plurality of reeds arranged at intervals are distributed in a circular shape to form the tail end of a cylindrical spring claw, and the diameter of the tail end of the spring claw is the same as that of an end belt or slightly larger than that of the end belt; the middle waist-contracting part of the reed comprises a first inclined plane 8, a second inclined plane 9 and a platform 10 positioned between the first inclined plane and the second inclined plane, a bulge 11 which is protruded outside the reed claw and used for increasing the reliability of electric connection between the reed claw and the rear sleeve is further arranged on the platform, the bulge and the platform are integrated to increase the strength of the reed, the reed is not easy to deform after the reed claw is plugged for many times, and therefore the plugging resistance of the reed claw is improved.

When the spring claw is matched with the rear sleeve, the tail end 7 of the spring claw is elastically extruded and then is installed into the jack of the rear sleeve, because the reed has certain elasticity, after the spring claw is assembled in place, the tail end of the reed is sprung and limited between the limiting step I and the trapezoidal limiting step II, the middle waist part of the spring claw is surrounded by the trapezoidal limiting step II, and the middle of the end belt of the spring claw is provided with an opening 12 for providing a certain deformation space so that the end belt can be conveniently assembled at the front end of the trapezoidal limiting step II. After the spring claw is assembled in place, the end belt is assembled in the jack after slight compression deformation, so that the end belt has certain elastic expansion force to enable the end belt to be tightly attached to the inner wall of the jack of the rear sleeve. Similarly, the tail end of the reed is tightly attached to the inner wall of the tail of the rear sleeve jack. When the pin hole is not inserted oppositely, the middle waisted part and the bulge of the spring claw are not in contact with the trapezoidal limiting step II. The contact pin and the spring claw are in interference fit after the contact pin is inserted into the spring claw of the jack, the spring claw elasticity is increased to realize the contact of the spring claw and the rear sleeve under the extrusion of the contact pin, the self-locking force between the spring claw and the rear sleeve is increased, the waist-contracting part in the middle of the reed elastically expands and deforms to enable the protrusion to be in close contact with the platform on the trapezoidal limiting step II so as to ensure the reliability of electric connection, and in the plugging process, the first inclined surface 8 and the second inclined surface 9 of the waist-contracting part in the middle of the reed are respectively limited by the inclined surface I13 and the inclined surface II 14 on the trapezoidal limiting step II so as to ensure that the spring.

Preferably, the included angles between the first inclined surface 8 and the second inclined surface 9 on the spring claw and the central axis of the spring claw are all 45 degrees.

The bulges on the spring claws can ensure the reliability of the electric connection between the spring claws and the rear sleeve, and can play a role in improving the strength of the reed, so that the reed is not easy to deform after being plugged for many times, and the oblique plugging resistance of the jack of the spring claw is improved.

The spring claw is an elastic part, and the spring claw part can be formed by stamping and rounding. The middle part of the spring claw after being rolled is of a waist-closing structure, the waist-closing part has certain elasticity, reliable contact with the contact pin can be realized, and the spring claw is in interference fit with the rear sleeve jack when being installed in the corresponding rear sleeve jack, so that electric contact between the spring claw and the rear sleeve is realized. The invention does not need to block the spring claw in the forms of reducing the orifice, machining, closing up or assembling a retainer ring at the orifice, and the like, and realizes the self-locking of the spring claw by matching the middle closing-up part of the reed with the trapezoidal limiting step II to prevent the spring claw from falling out in the plugging and unplugging process. The spring claw jack is provided with the bulge on the reed of the middle waist-contracting part, so that the plugging service life and the oblique plugging resistance of the jack are improved while the electric connection reliability is met.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention in any way, and any simple modification, equivalent change and modification made by those skilled in the art according to the technical spirit of the present invention are still within the technical scope of the present invention without departing from the technical scope of the present invention.

Claims

1. The utility model provides an elasticity spring claw jack, includes the back cover and assembles the spring claw in the back cover jack, is provided with in the jack of its characterized in that back cover and is used for carrying on spacing step I and the trapezoidal spacing step II of partial complex of bowing back with the spring claw middle part to the spring claw, the spring claw include the end area and the elasticity reed that sets up with a plurality of intervals that the end area is connected, the reed mid portion is bowed, this middle part of bowing back still is provided with to the outside convex arch that is used for increasing between spring claw and the back cover electric connection reliability of spring claw, the reed tail end is spacing between spacing step I and trapezoidal spacing step II, bowing back the part in the middle of a plurality of reeds by trapezoidal spacing step II encircle and by II spacing prevention spring claws of trapezoidal spacing step when inserting with the contact pin plug.

2. The resilient spring finger receptacle of claim 1 wherein the intermediate waisted portion of the spring leaf includes a first angled surface, a second angled surface and a plateau disposed between the first angled surface and the second angled surface, said projection being disposed on the plateau.

3. The resilient spring finger receptacle of claim 2, wherein said projection is integral with the platform for increasing the strength of the spring finger to improve resistance to insertion and removal of the spring finger.

4. The resilient spring finger receptacle of claim 1, wherein a plurality of spaced spring fingers are arranged in a circular pattern to form a spring finger tail having a diameter substantially the same as or slightly greater than the diameter of the end band.

5. The elastic spring claw jack according to claim 1, wherein the pin hole is inserted into the pin hole in an interference fit with the spring claw to make the protrusion tightly contact with the rear sleeve, thereby ensuring the reliability of the electrical connection between the spring claw and the rear sleeve and increasing the self-locking force between the middle waist portion of the spring and the trapezoidal limiting step ii.