CN201562776U

CN201562776U - Probe

Info

Publication number: CN201562776U
Application number: CN200920133657XU
Authority: CN
Inventors: 刘杞洪; 朱广慧; 杜林杰
Original assignee: Shenzhen TCL New Technology Co Ltd
Current assignee: Shenzhen TCL New Technology Co Ltd
Priority date: 2009-07-15
Filing date: 2009-07-15
Publication date: 2010-08-25
Anticipated expiration: 2019-07-15

Abstract

The utility model is applicable to the technical field of a circuit and provides a probe, wherein the length of a probe pin is the thickness of a plugged PCB plus 0.7mm-1.2mm. The technical scheme provided in the utility model has the advantages that the length of the residual pin through one surface of a wave soldering machine after the probe penetrates through the PCB is shortened, the flow resistance of a lead-free solder among the probe pins is reduced, the solder allowance of the lead-free solder left among the probe pins after flowing through the wave soldering machine is reduced owing to flow resistance, the purpose of reducing the continuous solder between adjacent pins is achieved owing to no redundant solder residue among the probe pins, the reject ratio of the continuous solder flowing through the machine during production is reduced, the production efficiency is improved, and the production cost is lowered.

Description

A kind of gating

Technical field

The utility model belongs to the circuit engineering field, relates in particular to a kind of gating.

Background technology

At present, the inside of panel TV set generally comprises the PCB module of multiple difference in functionality, exist different annexations between the every PCB functional module, all kinds of gatings of more use are as connected mode, for example between power panel module and main frame core module, all can use double pin between main frame core and the LCD screen etc., the pin distance is such class gating of 2.0mm, shown in Fig. 1 a and Fig. 1 b, this gating is commonly called as double 2.0mm socket again, have two kinds to form type, a kind of pin is vertical, and another kind of pin is crooked, pin number is generally 6 and does not wait to 40, formulates approval according to the demand that each company's design is used.Satisfy the effective connection between the various functional modules in the machine by the connection of this type of gating, reach the purpose of entire machine operate as normal.But, at present this type of gating is inserted to pin length in the PCB printed board and is generally 3.0mm-3.5mm and does not wait in the household electric appliances, shown in shown in Fig. 2 a and Fig. 2 b, because the Pb-free solder that present most of electron trade is used aborning is mobile relatively poor, after this type of gating is inserted into and crosses the crest stove in the PCB printed board, scolding tin occurring remains between the pin of gating, cause that to connect tin between the gating pin serious, no matter how the design to gating pin pad changes in PCB printed board design, all is difficult to fundamentally solve cross the bad phenomenon that connects tin behind the crest stove between this type of gating pin.

Therefore, need a kind of technical scheme, to solve the above problems.

The utility model content

The purpose of this utility model is to provide a kind of gating, is intended to solve the gating that exists in the prior art and crosses the residual problem of pin scolding tin behind the crest stove.

The utility model is achieved in that a kind of gating, and the length of described gating pin adds 0.7mm-1.2mm for the thickness of the PCB printed board of its plug-in mounting.

The thickness of described PCB printed board is 1.6mm, and described gating pin length is 2.3mm-2.8mm.

Described gating pin is vertical pins or crooked pin.

Described gating is for connecting the connector of two or more PCB printed boards.

Described gating is that double pin, pin are apart from being the gating of 2.0mm.

After described gating was inserted to described PCB printed board, its pin residue length of crossing crest stove one side was between the 0.7mm-1.2mm.

The utility model overcomes the deficiencies in the prior art, and the thickness that the pin length of gating is designed to the PCB printed board adds 0.7mm-1.2mm, and after guaranteeing that gating is inserted on the pcb board, the remaining length of gating pin is between 0.7mm-1.2mm.The technical scheme that the utility model provides can shorten gating and pass after the PCB printed board length at the one side residue pin of crossing the crest stove, reduce the flow resistance of Pb-free solder between the gating pin, Pb-free solder is reduced because of scolding tin surplus that the influence of flow resistance remains between the gating pin after crossing the crest stove, reach no unnecessary scolding tin residual between the gating pin and reduce the purpose of the company's tin between the adjacent leads, can reduce and cross the fraction defective that stove connects tin in the production, enhance productivity, reduce production cost.

Description of drawings

Fig. 1 a and Fig. 1 b are that existing double pin, pin are apart from being 2.0mm gating schematic diagram;

Fig. 2 a and Fig. 2 b are that existing double pin, pin distance are the structural representation of 3.0mm-3.5mm gating for 2.0mm, installation pin length;

Fig. 3 a and Fig. 3 b are respectively two kinds of gating structural representations that the utility model embodiment provides.

Embodiment

The technical scheme that the utility model provides is: the thickness that the pin length of gating is designed to the PCB printed board adds 0.7mm-1.2mm, after guaranteeing that gating is inserted on the pcb board, the remaining length of gating pin is between 0.7mm-1.2mm, pass after the PCB printed board length to shorten gating at the one side residue pin of crossing the crest stove, reduce the flow resistance of Pb-free solder between the gating pin, Pb-free solder is reduced because of scolding tin surplus that the influence of flow resistance remains between the gating pin after crossing the crest stove, reach no unnecessary scolding tin in residual between the gating pin and purpose company's tin between the reduction adjacent leads.

In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

During technical scheme that specific implementation the utility model provides, at thickness is the PCB printed board of 1.6mm, the pin length that gating can be inserted on it is set between the 2.3mm-2.8mm, can require an optimum value in this scope of selection according to the difference of production technology; If the thickness of pcb board is greater than or less than 1.6mm, then gating is inserted to the pin length on the pcb board, can adjust up and down according to the increase of pcb board thickness or the size of minimizing, after guaranteeing that gating is inserted on the pcb board, the remaining length of gating is between 0.7mm-1.2mm, shown in Fig. 3 a and Fig. 3 b.

More specifically, according to gating position of placing in the PCB printed board and the relation of crossing crest stove direction, the selected corresponding process of tin pad that drags with the supporting use of gating, makes gating reach tin effect on the best after crossing the crest stove; The gating that the utility model provides, the experimental data after the assembling is as shown in the table, and basic the solution connects the bad phenomenon of tin after this type of gating is crossed the crest stove in the production.As mentioned above, the gating pin has two kinds to form type, a kind of pin is vertical, another kind of pin is crooked, no matter a kind of formation type of that of this gating, experimental data is only relevant with the pin length of gating, irrelevant with generation type, so not existing because of the difference of the pin generation type of gating, resulting experimental data not there are differences, so experimental data satisfies the various generation types of this type of gating fully.

During concrete the application, can be according to gating related physical size of the present utility model, set up the gating PCB java standard library associated documents of good corresponding PCB printed board design, every needs use the design of this type of gating in all PCB printed board designs, all unify to guarantee the design and installation data consistent of this type of gating by setting up good gating PCB java standard library in advance; In process of production, requirement according to the BOM inventory, at the gating that needs to install plug-in mounting correspondence on the position of this type of gating in the PCB printed board, import Pb-free solder crest stove after having checked the planarization of gating plug-in mounting, after flowing through the crest stove and treating that the PCB printed board naturally cools to normal temperature, the company's of reexamining tin situation connects the tin fraction defective and reaches promptly to finish behind the production technology standard-required and implement to install and use process.

Compare with existing gating, the design is novel to pass after the PCB printed board length at the one side residue pin of crossing the crest stove by shortening gating, reduce the flow resistance of Pb-free solder between the gating pin, make Pb-free solder minimum because of the scolding tin surplus that the influence of flow resistance remains between the gating pin after crossing the crest stove, reach no unnecessary scolding tin at residual between the gating pin and company's tin between the reduction adjacent leads.

The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.

Claims

1. a gating is characterized in that, the length of described gating pin adds 0.7mm-1.2mm for the thickness of the PCB printed board of its plug-in mounting.

2. gating according to claim 1 is characterized in that, the thickness of described PCB printed board is 1.6mm, and described gating pin length is 2.3mm-2.8mm.

3. gating according to claim 1 is characterized in that, described gating pin is vertical pins or crooked pin.

4. gating according to claim 1 is characterized in that, described gating is for connecting the connector of two or more PCB printed boards.

5. gating according to claim 1 is characterized in that, described gating is that double pin, pin are apart from being the gating of 2.0mm.

6. gating according to claim 1 is characterized in that, after described gating was inserted to described PCB printed board, its pin residue length of crossing crest stove one side was between the 0.7mm-1.2mm.