CN204857980U

CN204857980U - Cylindricality terminal of belleville spring packing ring has been used

Info

Publication number: CN204857980U
Application number: CN201520399157.6U
Authority: CN
Inventors: 刘高潮
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-06-11
Filing date: 2015-06-11
Publication date: 2015-12-09
Anticipated expiration: 2025-06-11

Abstract

The utility model provides a cylindricality terminal of belleville spring packing ring has been used: the cylindricality terminal is by the housing pin, care clamp, the belleville spring packing ring, belleville spring packing ring fixing device and conducting strip are constituteed, head at the housing pin, there is the groove that supplies the screwdriver to screw up, below at the housing pin tip, there is a belleville spring packing ring that has been locked by belleville spring packing ring fixing device, as one of preferred scheme, the belleville spring packing ring fixing device make with the sheetmetal, the bottom be one square or circular, the size of bottom slightly is greater than the external diameter of belleville spring packing ring, the periphery has ascending turning up. The belleville spring packing ring is compressed tightly 0.15mm's elastic deformation occasionally, provides about 630N's elasticity simultaneously, be enough to reduce since the influence of the metalwork creep that pressure and temperature caused and screw thread vice when the state of vibrations relative displacement's trend, improved the reliability of cylindricality terminal use.

Description

Employ the cylindricality terminal of disk spring washer

Technical field

The utility model belongs to the category of connector terminal, particularly a kind of cylindricality terminal employing disk spring washer.

Background technology

In family expenses distribution system, using maximum when connecting wire is column type terminal.The shortcoming of column type terminal is the prolongation along with service time, and contact can reduce gradually, and contact resistance becomes large gradually.The factor of mainly two aspects of cylindricality terminal contact reducing gradually causes: creep occurs 1, compacted in terminal wire under the effect of the pressure makes diameter diminish, and temperature is higher, and creep is more obvious; When 2, being given a shock, screw thread pair has the trend that relative displacement occurs.If can utilize elastic washer that the characteristic of strain occurs when compressing, just can effectively reduce because the problem of the pressure reduction that screw thread pair loosens or wire creep causes.GB/T2009.1 (equivalent IEC884-1) the 26.4th section explicitly points out: " screw and rivet, no matter do electrical connection or mechanical connection, all should be locked, with anti-loosening and rotation ".Also point out in its note 1 " spring washer can play good locking effect ".Because column type terminal provides pressure with the end of screw, the head of screw does not stress, although so know that spring washer can play good locking effect, never see the application of spring washer on cylindricality terminal.

Number of patent application CN200820070902.2 discloses a kind of anti-loosening electric wire connecting junction, and have an elastic pressuring plate in pressing line frame bottom, said elastic pressuring plate can be exterior, also can be made of one structure with pressing line frame.

A kind of binding post now on sale on the market, its main body is also column type terminal, and upwards lift pressing line frame at the circular stage clip that has below of pressing line frame outside, power is upwards provided by the frame that insulate.

Above two examples are all good try, but up to the present, the product going back neither one practicality appears on the market.

Utility model content

The purpose of this utility model is just to provide a kind of cylindricality terminal employing disk spring washer.

Scheme of the present utility model is as follows: a kind of cylindricality terminal employing disk spring washer, be made up of housing pin, pressing line frame, disk spring washer, disk spring washer fixture and conducting strip, a disk spring washer fixture is had in the below of housing pin end, in disk spring washer fixture, there is a disk spring washer.

One of preferably, described disk spring washer fixture, be on conducting strip relative to more than at least three on housing pin end position upwards turn up part, all upwards turn up partial symmetry be distributed in one circumferentially, center of circle of this circle is on the extended line of housing pin axis.

One of preferably, described disk spring washer fixture sheet metal is made, and the bottom of fixture can be square, also can be circular, the size of bottom slightly larger than the external diameter of disk spring washer, periphery have upwards turn up part.

The using method of spring washer routine is enclosed within screw, the interior external diameter through being greater than screw of packing ring, the external diameter of packing ring and the external diameter of screw head similar, during screw tightening, its head flattens spring washer.Because cylindricality terminal itself is provide pressure with the end of screw, so spring washer cannot be used in the head of screw, and the end of cylindricality terminal housing pin can only be placed on.Use electric current very little in the inner space of the cylindricality terminal of below 32A, the about 6mm of diameter of the spring washer of pressing line frame can be put into, thickness is at 0.3mm, the amount of spring washer compression is at 0.15mm, so little volume can provide the power of 630N, therefore, the method provided with the utility model, can be used in disk spring washer on cylindricality terminal easily.

The utility model implements very simple, does not need the structure and the use habit that change existing column type terminal.

Owing to placed a disk spring washer in the end of housing pin, just the catenation principle of cylindricality terminal, from " being rigidly connected in elastic range " in past, become " elasticity in elastic range connects ".The distortion of the 0.15mm produced when disk spring washer is compacted, the elastic force provided meets the requirement of GB/T2009.1 (equivalent IEC884-1) for the terminal that is threaded completely, be enough to overcome the adverse effect that the metal creep that causes due to temperature and pressure brings, and effectively stop the trend of screw thread pair relative displacement when running into vibrations.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 a is the utility model circular base spring washer fixture schematic diagram;

Fig. 2 b is the utility model square base spring washer fixture schematic diagram;

Fig. 3 is the structural representation that disk spring washer is fixed on conducting strip;

Fig. 4 is the position view that part upwards turned up by conducting strip

Specific embodiments

Below in conjunction with accompanying drawing and embodiment, the utility model is described in detail

Embodiment one:

Referring to Fig. 1, Fig. 2, the head of housing pin 1 has the groove tightened for screwdriver, a disk spring washer fixture 3 is had in screw end, the part 31 of disk spring fixture by upwards turning up perpendicular to bottom surface 32, be enclosed within the end of housing pin, the outside bottom fixture is pressed on conducting strip, placed a disk spring 4 in the inside of disk spring washer fixture 3.When normally using, insulation crust secures conducting strip and housing pin, makes conducting strip and housing pin all not have large displacement in upper and lower, left and right.By the rotation of housing pin, wire frame 2 can up and downly insert to adapt to different-diameter wire, and disk spring washer 4 device 31 ends being locked in housing pin of turning up upwards that are fixed can not be fallen out.When housing pin is tightened, energy in being stored by disk spring washer distortion, is added the ability of cylindricality terminal shock resistance and anti-metal creep, improves the reliability that cylindricality terminal uses.

Embodiment two:

Referring to Fig. 3, Fig. 4, on conducting strip 5, there is the dogleg section 51 upwards of more than at least 3, these dogleg section symmetries upwards be distributed in one circumferentially, the size of this circumference is slightly larger than the external diameter of disk spring washer, and the center of this circle correspond to the axis of housing pin; Disk spring washer 4 is directly placed on conducting strip 5, and periphery is blocked by conducting strip dogleg section 51 upwards, no matter whether housing pin is tightened, disk spring washer is all by the end being limited in housing pin reliably.After housing pin is tightened, the upper edge of disk spring washer is close to the end face of housing pin, and very little contact area and very large pressure improve against shock ability, and the strain of disk spring washer improves anti-creeping ability.

Claims

1. one kind employs the cylindricality terminal of disk spring washer, be made up of housing pin, pressing line frame, disk spring washer, disk spring washer fixture and conducting strip, it is characterized in that: below housing pin end, have a disk spring washer fixture, in disk spring washer fixture, there is a disk spring washer.

2. a kind of cylindricality terminal with disk spring washer according to claim 1, one of it is characterized in that: preferably, said disk spring washer fixture, turn up part relative to more than at least three of housing pin end position on conducting strip, it is all that to turn up being distributed in of partial symmetry circumferentially same, the center of circle of this circle is on the extended line of housing pin axis, and this diameter of a circle is slightly larger than disk spring washer external diameter.

3. a kind of cylindricality terminal with disk spring washer according to claim 1, one of it is characterized in that: preferably, said disk spring washer fixture, made by sheet metal, can be square bottom this fixture, also can be circular, this fixture bottom size slightly larger than disk spring washer external diameter, periphery have upwards turn up part.