CN2549607Y

CN2549607Y - Electric connector

Info

Publication number: CN2549607Y
Application number: CN02234061U
Authority: CN
Inventors: 何宜泽
Original assignee: Molex LLC
Current assignee: Molex LLC
Priority date: 2002-05-18
Filing date: 2002-05-18
Publication date: 2003-05-07
Anticipated expiration: 2012-05-18

Abstract

The utility model provides an electric connector for connecting a circuit board and a hard disk drive. The hard disk drive comprises a plurality of pins which can be electrically connected with the electric connector. The electric connector includes an insulating shell, and a plurality of terminals which are arranged on the insulating shell. The terminal has a soldering part which can be in electric connection with the pin of the hard disk drive, a fixed part which is connected with the soldering part and is fixedly arranged on the insulating shell, an elastic arm which extends from the fixed part to the side away from the soldering part and shrinks in width gradually, and a contacting part which is connected with the elastic arm and is used for electrically connecting with the hard disk drive and the width of the contacting part is wider than the free end of the elastic arm and the pin of the hard disk drive. When the electric connector is connected with the hard disk drive, as the contacting part has wider width, the connection of the terminal with the pin of the hard disk drive is convenient. In addition, as the width of the elastic arm is contracted gradually, the stress on the terminal can be evenly distributed, thus, the stress can not be centralized.

Description

Electric connector

Technical field

The utility model is that a kind of electric connector is being provided, particularly a kind of electric connector that is used to connect a circuit board and a Hard Disk Drive.

Background technology

Consult Fig. 1, the pin 11 that a side of general drawing out type Hard Disk Drive 1 has the complex root two rows and outwards protrudes out, pin 11 is very thin, very tiny cylindrical or square column types.The known electric connector 3 that is used for connecting a Hard Disk Drive 1 and a circuit board 2 comprises an insulation shell 31, and complex root terminal 32.One lateral margin of insulation shell 31 protrudes out a Plug Division 311, this Plug Division 311 has a relative upper surface, reaches a lower surface, form a plurality of grooves 312 that run through insulation shell 31 on the upper and lower surface respectively, and respectively this groove 312 can correspond respectively to a pin 11 of Hard Disk Drive 1.A ccontaining terminal 32 be can distinguish in each groove 312, Hard Disk Drive 1 and circuit board 2 are used for electrically connecting.

Consult Fig. 2, terminal 32 has a fixed part 321, a weld part 322, an elastic arm 323, and a contact site 324.The dual side-edge of fixed part 321 forms four to the interference part 325 of outer lug, and when making terminal 32 insert the groove 312 of insulation shell 31, interference part 325 can produce with the internal face of groove 312 interferes and terminal 32 can be fastened be fixed in the groove 312.Weld part 322 is to be extended by a side of fixed part 321, extends outside the insulation shell 31 through groove 312 bendings, and is electrically connected at circuit board 2.Elastic arm 323 be the thin slice of wide uniform thickness by fixed part 321 to extending away from the direction of weld part 322, and elastic arm 323 not with fixed part 321 coplines.The end that elastic arm 323 is not connected with fixed part 321 connects a contact site 324.

When the pin 11 of Hard Disk Drive 1 stretches into groove 312 desires with terminal 32 electric connections, pin 11 can be pressed to the contact site 324 of terminal 32 bottom of groove 312, make elastic arm 323 bending distortion and produce a reverse active force, such design can guarantee that the contact site 324 and the pin 11 of Hard Disk Drive 1 are bonded together.Yet, because the elastic arm 323 of known electric connector 3 employed terminals 32 is the thin slice of wide uniform thickness, after the columniform pin 11 that is subjected to Hard Disk Drive 1 supports in advance, can generation one distribute toward fixed part 322 cumulative stress (σ) by contact site 324, that is can be maximum at the suffered stress (σ) in the position of elastic arm 323 vicinity fixed parts 322, as shown in Figure 3, make elastic arm 323 easy permanent deformations or fracture easily.

Therefore, in order to improve the shortcoming that stress is concentrated, another as shown in Figure 4 known terminal 32 ', promptly revise elastic arm 323 ' thickness, make fixed part 321 ' thickness the thickest, decrescence to contact site 324 ', make contact site 324 ' for the thinnest.Be subjected to pin 11 contacts of hard disc 1 this moment and produce the stress distribution of distortion can be average, more do not have the phenomenon that stress is concentrated, as shown in Figure 5.

Yet the metal material manufacturing cost of thickness gradually closing is higher, does not meet economic benefit.If want processing and manufacturing, be easy in the process of punching press, destroy raw-material molecular structure, elastic arm 323 ' easily generation destroys to rupture and maybe can't show the mechanical behavior of expection and make.

In addition, the

terminal

32,32 of known electric connector 3 ', do not have a contact site 324,324 that amplifies ', make terminal 32,32 ' also have and contact difficult situation with the pin 11 of Hard Disk Drive 1.

Therefore, known electric connector 3 needs a preferable terminal structure, avoids that above-mentioned stress is concentrated, cost is expensive with contact difficult situation.

Summary of the invention

Therefore, a purpose of the present utility model is promptly providing one to be connected in a Hard Disk Drive and a circuit board and to have the electric connector that can avoid the terminal that stress concentrates.

Another purpose of the present utility model is to provide a manufacturing cost lower electric connector.

The terminal that is installed with in the electric connector of the present utility model, its elastic arm not with the fixed part coplane.

The terminal that is installed with in the electric connector of the present utility model, along the length direction of its elastic arm, width is gradual change.

The terminal that is installed with in the electric connector of the present utility model, along the length direction of its elastic arm, width is more near contact site, width is narrow more.

So electric connector of the present utility model comprises an insulation shell, and plural number is for the terminal of a circuit board and Hard Disk Drive electric connection.

One side of insulation shell has protruded out a Plug Division, and the Plug Division has two facing surfaces, along respectively forming a plurality of grooves that run through this housing accordingly on the surface.The complex root terminal is placed in respectively in the groove of insulation shell.Each terminal has a fixed part, a weld part, an elastic arm, and a contact site.

Fixed part is fixedly arranged in the groove.Weld part is extended by an end of fixed part and is positioned at outside the insulation shell, and electrically connects with this circuit board.Elastic arm has a stiff end that is adjacent to this fixed part, and one by this stiff end to the free end that extends away from this weld part direction, this elastic arm not with this fixed part coplane, and its width by this stiff end towards this free end direction convergent.The contact site is in the free end of this elastic arm, can conflict with the pin of this Hard Disk Drive be electric connection, and its width the pin than Hard Disk Drive is roomy greatly and also than the free end of this elastic arm.

When desiring to electrically connect with terminal in pin stretches into groove, the pin than Hard Disk Drive is roomy greatly and also because the width of contact site is than the free end of this elastic arm, imports joint easily.Pin insert groove after, elastic arm can be backed down and crooked with the work contact site, this moment, elastic arm was because of taper in width, make that the suffered stress of elastic arm can be about equally, and an end that does not have at the adjacency fixed part is subjected to the stress maximum and produces to destroy the situation that fracture maybe can't show the mechanical behavior of expection.

The accompanying drawing simple declaration

Technology contents of the present utility model, characteristic and advantage cooperate below with reference to accompanying drawing and preferred embodiment to describe in detail, can clearly present, in graphic:

Fig. 1 is a schematic perspective view, and the situation that an electric connector is corresponding with the plural pin of a Hard Disk Drive is described;

Fig. 2 is the schematic perspective view of a terminal of a known electric connector;

Fig. 3 is the stress distribution schematic diagram of known connector terminals shown in Figure 2 when stressed;

Fig. 4 is a stereogram of another known connector terminals;

Fig. 5 is the stress distribution schematic diagram of another known connector terminals when stressed;

Fig. 6 is the schematic perspective view of a preferred embodiment of electric connector of the present utility model;

Fig. 7 is the local side schematic view that amplifies of electric connector shown in Figure 6;

Fig. 8 is the schematic perspective view of a preferred embodiment of connector terminals shown in Figure 6;

Fig. 9 be connector terminals shown in Figure 7 one on look schematic diagram; And

Figure 10 be Fig. 7 the stress distribution schematic diagram of first connector terminals when stressed.

DETAILED DESCRIPTION OF THE PREFERRED

Consult Fig. 6-8, a preferred embodiment of the utility model electric connector 4 is to be used for connecting a Hard Disk Drive 1 and a circuit board 2.Hard Disk Drive 1 has plural upper and lower arrangement and the pin 11 that protrudes out in the part that connects, and pin 11 is very thin very thin cylindrical or square column types.

Electric connector 4 comprises an insulation shell 41, and plural number is electrically connected at the terminal 42 of circuit board 2 and Hard Disk Drive 1.Insulation shell 41 protrudes out a Plug Division 411, and each forms the groove 412 that plural number connects insulation shell 41 Plug Division 411 two opposite surfaces.42 of each terminals are fixedly arranged on respectively respectively in this groove 412.

Each terminal 42 has a fixed part 421, a weld part 422, an elastic arm 423, and a contact site 424.The setting of fixed part 421 and weld part 422 and effect, therefore roughly identical with conventional designs, and non-improvement emphasis of the present utility model partly will repeat no more about this.

The elastic arm 423 of terminal 42 has a stiff end 4231 that engages with fixed part 421, and one extends and be adjacent to the free end 4232 of contact site 424 by stiff end 4231.Toward free end 4232 convergents, promptly the wideest at stiff end 4231, free end 4232 is the narrowest by stiff end 4231 for the width of elastic arm 423.The stiff end 4231 of elastic arm 423 fits in the groove 412 of insulation shell 41, then is spaced a distance with groove 412 at the free end 4232 of elastic arm 423, not with fixed part 421 coplines, as shown in Figure 9.

424 free ends 4232 by elastic arm 423 of contact site stretch out, and make its width roomy and wide than free end 4232 width of elastic arm 423 than the pin 11 of Hard Disk Drive 1, and form the slide guide face 4241 of a projection on the surface of contact site 424.

When Hard Disk Drive 1 is desired pin 11 to be stretched in the corresponding groove 412 when electric connector 4 on the circuit board 2 is connected, and the contact site 424 of first contact terminal 42.Because contact site 424 is wide and wide than the pin 11 of Hard Disk Drive 1 than free end 4232 width of elastic arm 423.And as previously mentioned, the pin 11 of Hard Disk Drive 1 is very thin very thin cylindrical or square column type, if contact site 424 is during as known small size, will make contact produce difficulty.But, make the pin 11 of Hard Disk Drive 1 dock easily and stretch into by slide guide face 4241 because the width of contact site 424 is wide.

When the pin 11 of Hard Disk Drive 1 continues to advance toward the fixed parts 421 of terminals 42, can contact contact site 424 and make elastic arm 423 to direction bending near groove 412.Elastic arm 423 has electrical contact to guarantee pin 11 with terminal 42 perseverances because of the acting in opposition that bending is produced forms the power to pin 11 roof pressures.Stress (σ) effect that this moment, elastic arm 423 produced because of bending can make stress (σ) to distribute fifty-fifty because of the change of width, as shown in figure 10.

Processing on elastic arm 423 width, processing than its thickness is time saving and energy saving, only need a punching press to finish, even and the mechanical behavior that can not destroy raw-material molecular structure or make terminal can't show expection causes the destruction fracture of elastic arm 423, not only cost can reduce, and more can make suffered stress distribution average.

In sum, but the convergent on electric connector 4 mat elastic arms 423 width of the present utility model changes, and the comparatively average and not easy fracture of the suffered stress of the elastic arm 423 that makes electric connector 4, also can be wide and wide than free end 4232 width of elastic arm 423 than the pin 11 of Hard Disk Drive 1 because of contact site 424 width, and pin 11 is docked easily, so really can reach the purpose of this utility model.

The above person of thought, it only is preferred embodiment of the present utility model, when not limiting the scope that the utility model is implemented with this, promptly the simple equivalent of being done according to the utility model claim and utility model description generally changes and modifies, and all should still belong in the scope that the utility model patent contains.

[element numbers contrast]

1 Hard Disk Drive, 323 ' elastic arm

11 pins, 324 ' contact site

2 circuit boards, 30 4 electric connectors

3 electric connectors, 41 look edge housings

31 insulation shells, 411 Plug Divisions

311 Plug Divisions, 412 grooves

312 grooves, 42 terminals

32 terminals, 35 421 fixed parts

321 fixed parts, 422 weld parts

322 weld parts, 423 elastic arms

323 elastic arms, 4231 stiff ends

324 contact sites, 4232 free ends

325 interference parts, 40 424 contact sites

32 ' terminal, 4241 slide guide faces

321 ' fixed part σ stress

Claims

1. true good a kind of electric connector is used to connect a Hard Disk Drive and a circuit board, and this Hard Disk Drive has that plural upper and lower row protrudes out arrangement and the pin that is elongated needle-like is characterized in that this electric connector comprises:

One insulation shell, the one side has protruded out a Plug Division, forms a plurality of grooves that run through this insulation shell at least one surface, this Plug Division;

The complex root terminal can be placed in respectively in the groove of this insulation shell, and respectively this terminal has:

One fixed part is fixedly arranged in this groove;

One weld part is extended and is positioned at outside this insulation shell by an end of this fixed part, and electrically connects with this circuit board;

One elastic arm has a stiff end that joins with this fixed part, and one by this stiff end to the free end that extends away from this weld part direction, this elastic arm not with this fixed part coplane, and its width by this stiff end towards this free end direction convergent; And

One contact site is positioned at the free end of this elastic arm, and its width is wide and wide than the pin of this Hard Disk Drive than the free end width of this elastic arm, and this contact site can directly slip into the groove of this Hard Disk Drive, and the pin that is plugged to this Hard Disk Drive is electric connection.

2. electric connector according to claim 1 is characterized in that, this contact site more forms the slide guide face of a projection.

3. electric connector according to claim 1 is characterized in that the two opposite sides of this fixed part are respectively equipped with the interference part, can produce with the internal face of this groove to interfere.

4. electric connector according to claim 1 is characterized in that, the Plug Division of this insulation shell forms a plurality of grooves that run through this insulation shell on two facing surfaces.