CN1937325A

CN1937325A - Connector for connecting wire

Info

Publication number: CN1937325A
Application number: CNA2006101398596A
Authority: CN
Inventors: 浅井清
Original assignee: SMK Corp
Current assignee: SMK Corp
Priority date: 2005-09-20
Filing date: 2006-09-20
Publication date: 2007-03-28
Also published as: JP2007087621A; KR20070032896A

Abstract

Provided is a connector for a cable of which an elastic contact piece (33) of a contact (3) has a contact holding part (38) elastically contacting and holding a core wire (W1) of a wire (W) inserted into a contact housing hole (12), with a simplified structure and a reduced size. The elastic contact piece (33) has a backfolding piece (34), a slanted piece (35), and a contact piece (36), and a contact holding part forming hole (37) is formed over the slanted piece (35) and the contact piece (36). An edge part of the contact holding part forming hole (37) at a wire insertion port (13) side is made to serve as a contact holding part (38). A height of a housing (1) is restrained by keeping the contact holding part (38) apart from an inner wall face of the housing (1) and increasing a pre-load of the elastic contact piece (33) to the core wire without damaging the inner wall face of the housing (1). Further, a structure for releasing connection is simplified by forming a jig insertion hole (16) for inserting a connection releasing jig (5) on an upper part of the contact housing hole (12) of the housing (1).

Description

Connector for connecting wire

Technical field

The present invention relates to connector for connecting wire, for example be used for the connector for connecting wire that electric wire is electrically connected with printed circuit board.

Background technology

In the existing connector for connecting wire, disclosed have for example Figure 11 or a connector shown in Figure 12.

Connector for connecting wire shown in Figure 11 has housing 100, remains on the joint 110 on this housing 100; Joint 110, have be bearing on the housing 100 and the vertical support sheet 111,112 of arranged opposite, link the lower end of vertical support sheet 111,112 horizontal link piece 113, extend from the lower ends downward side of vertical support sheet 111,112 and the elastic contact chip 118 of the terminal plate 115,116 to housing 100 outside, given prominence to, the elastically deformable of in the joint accepting hole 101 of housing 100, turning back from the upper end of a side vertical support sheet 111, be formed with Elastic Contact maintaining part 119 at the front end of elastic contact chip 118.

And, when being connected with electric wire W, insert mouthful 102 insertion electric wire W from the electric wire of housing 100, its heart yearn W1 is pressed between the contact maintaining part 119 and vertical support sheet 112 of elastic contact chip 118, push elastic contact chip 118 and make its strain, the contact maintaining part 119 Elastic Contact heart yearn W1 of elastic contact chip 118 remain on heart yearn W1 between itself and the vertical support sheet 112, thereby are electrically connected electric wire W and printed circuit board P.

Again, when choosing electric wire W, insert mouthfuls 103 from the instrument of housing 100 and insert to connect to remove and use instrument J, make elastic contact chip 118 be displaced to the position shown in the double dot dash line, releasing can take out electric wire W to the clamping of heart yearn W1.

Again, connector for connecting wire shown in Figure 12, the joint that have the support unit 200 that keeps printed circuit board P, seals the top opening that forms on this support unit 200 accommodate recess 201 lid 210, remain on support unit 200 and cover joint 220 in 210; Joint 220, have be provided in joint accommodate in the recess 201 and be bearing in support unit 200 and cover the supporting slice 221 of the U font in 210, the horizontal supporting sheet 222 that extends to the one end, the front end of horizontal supporting sheet 222 extend be provided with and to support unit 200 outside the elastic contact chip 225 of outstanding terminal plate 223, the elastically deformable of in joint is accommodated recess 201, turning back from the other end of supporting slice 221, be formed with at the front end of elastic contact chip 225 and contact maintaining part 226.

And, when being connected with electric wire W, insert mouthfuls 211 and insert electric wire W from covering 210 electric wire, heart yearn W1 is pressed between the contact maintaining part 226 and supporting slice 221 of elastic contact chip 225, push elastic contact chip 225 and make its strain, the contact maintaining part 226 Elastic Contact heart yearn W1 of elastic contact chip 225 and heart yearn W1 is clamped between itself and the supporting slice 221, and be electrically connected electric wire W and printed circuit board P.

Again, when choosing electric wire W, when inserting and when connection solid line is represented in Figure 12 the position operating portion 232 that can rotate around fulcrum 231 to operation counterclockwise, utilize press section 233 to push elastic contact chip 225 and make its strain, thereby can remove the clamping of heart yearn W1 and extract electric wire W (Fig. 4 of reference example such as patent documentation 1).

Patent documentation 1:U.S.Patent No.5,915,991

But, in known example shown in Figure 11, owing to the circuit board face that is relative printed circuit board P vertically inserts the longitudinal type connector of electric wire W, so there is the problem that can not suppress height.

Again, because vertical support sheet 111,112 arranged opposite in joint accepting hole 101 of joint 110, so there is the problem that must increase width dimensions.

Therefore, the problem that has outer shape big when 2 utmost points (for example, long 10.0mm, wide 8.5mm, high 12.5mm).

Again, in known example shown in Figure 12, action bars 230 etc. must be arranged, have the structure complicated problems that becomes.

Summary of the invention

The present invention makes in view of foregoing problems, but the object of the present invention is to provide a kind of simplified structure and realize the connector for connecting wire of miniaturization (for example low level).

Scheme 1 described invention, it is a kind of connector for connecting wire, have at front surface and form that electric wire inserts mouthful and form in inside and to insert mouthful housing of the joint accepting hole that is communicated with electric wire and to remain on joint in the aforementioned housing, aforementioned joint has: supporting slice is bearing on the following side of aforementioned joint accepting hole of aforementioned housing; Elastic contact chip inserts that oral-lateral is turned back and elastically deformable ground is provided in the aforementioned joint accepting hole from the aforementioned electric wire of aforementioned supporting slice, and with insert mouthful heart yearn Elastic Contact of the electric wire of insertion from aforementioned electric wire; It is characterized in that: aforementioned elastic contact chip, the aforementioned electric wire that has at aforementioned supporting slice inserts the sheet of turning back that oral-lateral is provided with continuously, the oblique plate that is provided with continuously and tilts in the approaching mode of upper lateral part at the front end of aforementioned fold return sheet to the aforementioned joint accepting hole of aforementioned housing, front end at aforementioned oblique plate is provided with the also butt sheet of the upper side wall inner surface of the aforementioned joint accepting hole of butt continuously, striding across aforementioned oblique plate forms with aforementioned butt sheet and contacts maintaining part and form the hole, the ora terminalis that aforementioned contact maintaining part is formed the aforementioned electric wire insertion oral-lateral in hole is made as the contact maintaining part that contacts and keep this heart yearn with the heart yearn of the electric wire that inserts, in the upper lateral part of the aforementioned joint accepting hole of aforementioned housing with the part of aforementioned butt sheet butt on, be formed with to be used to insert and connect the tool insert hole of removing with instrument.

Scheme 2 described inventions are in scheme 1 described invention, it is characterized in that: the contact maintaining part forms hole shape and becomes and overlooks rectangular shape, and its transverse width form the transverse width that inserts mouthful greater than electric wire.

Scheme 3 described inventions are in scheme 1 or 2 described inventions, it is characterized in that: in the upper lateral part of the joint accepting hole of housing with the part of butt sheet butt on, be formed with and can visually insert mouthful fenestra that has or not of the heart yearn of the electric wire that inserts from electric wire.

Scheme 4 described inventions are that it is characterized in that: fenestra and tool insert hole form continuously in scheme 3 described inventions.

Scheme 5 described inventions are in each described invention, to it is characterized in that in scheme 1～4: on the butt sheet, cut the part of butt sheet and form and insert mouthful retainer of the front end butt of the heart yearn of the electric wire that inserts from electric wire to downside.

The invention of scheme 6, be in scheme 5 described inventions, it is characterized in that: the contact maintaining part forms the hole and has cut by the hole of the U font that utilizes stamping-out to form with to downside and utilize the tongue piece that this U font hole forms and the hole that forms forms, and with the aforementioned tongue piece of having cut as retainer.

Scheme 1 described invention, be to have housing and joint, and joint has in the connector for connecting wire of supporting slice and elastic contact chip, because elastic contact chip has the sheet of turning back, oblique plate and butt sheet, and formation contacts maintaining part formation hole with the butt sheet to stride across oblique plate, the ora terminalis that the contact maintaining part is formed the electric wire insertion oral-lateral in hole is made as the heart yearn of trolley wire and keeps its contact maintaining part, make the contact maintaining part leave the upper side wall inner surface of the joint accepting hole of housing, increase the precompression of elastic contact chip so can not damage the internal face of housing, be expected to suppress height dimension and realize miniaturization heart yearn.

Again, upper side wall at the joint accepting hole of housing forms tool insert hole, thereby can utilize the connection of inserting from this tool insert hole to remove and push elastic contact chip, remove and the contacting of heart yearn, so can simplify the structure that is connected that is used to remove with electric wire with instrument.

Scheme 2 described inventions, be in scheme 1 described invention, the contact maintaining part forms hole shape and becomes and overlooks rectangular shape, and its transverse width form the transverse width that inserts mouthful of big sub-electric wire, so can make heart yearn insert the processing ease of joint accepting hole and improve operation with electric wire.

Scheme 3 described inventions, be in scheme 1 or 2 described inventions, upper lateral part at the joint accepting hole of housing, form fenestra in part with butt sheet butt, make visually whether to insert mouthful heart yearn of the electric wire that inserts, visually judge whether the heart yearn of electric wire contacts, remains on the contact maintaining part of elastic contact chip so can utilize from electric wire.

Scheme 4 described inventions are that fenestra and tool insert hole form continuously in scheme 3 described inventions, so can form fenestra and tool insert hole easily.

Scheme 5 described inventions, be in scheme 1～4 in each described invention, on the butt sheet, cut the butt sheet and formed retainer to downside, butt inserts mouthful front end of the heart yearn of the electric wire that inserts from electric wire, so can prevent the excessive insertion of the heart yearn of electric wire, and limit the displacement that is connected the elastic contact chip that releasing pushes with instrument when contact removing, can prevent the fatigue of elastic contact chip with electric wire.

The invention of scheme 6, be in scheme 5 described inventions, the contact maintaining part forms the hole by U font hole with utilize having cut of tongue piece and the hole that forms forms, and the tongue piece that will cut is as retainer, so can increase the design freedom that contacts maintaining part formation hole and retainer.

Description of drawings

Fig. 1 is the figure of an execution mode of expression connector for connecting wire of the present invention, (a) is the A-A line amplification view of Fig. 2, (b) is the amplification stereogram of the joint 3 in the expression (a).

Fig. 2 is the vertical view of connector for connecting wire of the present invention.

Fig. 3 is the front view of Fig. 2.

Fig. 4 is the upward view of Fig. 2.

Fig. 5 is the right side view of Fig. 2.

Fig. 6 is the figure of the rear side of presentation graphs 3.

Fig. 7 is the partial top view of the printed circuit board P in the presentation graphs 1.

Fig. 8 is a stereogram of seeing Fig. 2 from face side (front face side).

Fig. 9 is a stereogram of seeing Fig. 2 from rear side (back side).

Figure 10 is that the insertion of electric wire W connects, connects the key diagram of removing.

Figure 11 is the cutaway view of the known example 1 of expression.

Figure 12 is the cutaway view of the known example 2 of expression.

Embodiment

Fig. 1～Fig. 9 represents an embodiment of connector for connecting wire of the present invention, in these figure, 1 expression housing, 3 expression joints, 5 expressions connect to remove represents that with instrument, 6 binding clasp, P represent that printed circuit board, W represent that electric wire, W1 represent the heart yearn (for example single line) of electric wire W, the covered section that W2 represents electric wire W.

Housing 1 utilizes insulating properties synthetic resin integrally formed, and profile forms highly lower rectangular shape (for example long 9mm, wide 13mm, high 2.7mm).

On housing 1,, be formed with the central through hole 11 of the essentially rectangular tubular that direction forwards, backwards connects and be positioned at the both sides of this central authorities' through hole 11 and the

joint accepting hole

12,12 of the roughly square tubular that connects of direction forwards, backwards as Fig. 8, shown in Figure 9.

In the front surface side of housing 1, be formed with the electric wire that is communicated with joint accepting hole 12 and insert mouth 13 and electric wire engaging stage portion 14, in the back of housing 1 side, be formed with the joint that is communicated with joint accepting hole 12 and insert mouth 15.

Electric wire inserts mouth 13 and forms, be communicated with joint accepting hole 12 and the cross section forms roughly square at the upper lateral part of joint accepting hole 12, in order to insert heart yearn W1 easily front face side is formed than being communicated with the taper that the side expansion is opened, this front face side open end becomes the cascaded surface of electric wire engaging stage portion 14 and the covered section W2 of electric wire W is not entered in the joint accepting hole 12.

Part in the back side of the upper side wall of the joint accepting hole 12 that is arranged in housing 1 is formed with tool insert hole 16 and fenestra 17 continuously.

Tool insert hole 16 is used to insert connect to be removed with instrument 5, form in the mode that is positioned at fenestra 17 back sides, the front face side ora terminalis of fenestra 17 forms in the mode of retainer described later 39 front face side that are positioned at joint 3, utilize this fenestra 17, whether the heart yearn W1 of electric wire W that can visual insertion has been inserted into the both allocations in the joint accepting hole 12.

In the both sides of housing 1, as shown in Figure 9, the binding clasp that is formed with at front surface side and bottom surface side opening keeps

groove

18,18, keeps being pressed into and blocking in the

groove

18,18 that at this binding

clasp binding clasp

6,6 is only arranged.

Joint 3 utilizes the stamping-out, bending process of the conductive metal plate of thickness t (for example t=0.25mm) and forms.

Joint 3, insert mouthfuls 15 from joint and accommodate and remain in the joint accepting hole 12 of housing 1, have being pressed into and block the supporting slice 31 of the roughly rectangle sheet the fastening groove of the following side of the joint accepting hole 12 that is formed at housing 1 (lower wall) in only, the terminal plate 32 of the shaped like narrow that is provided with continuously with the back side of supporting slice 31, with the supporting slice 31 front face side elastic contact chip 33 of setting continuously.

Elastic contact chip 33 has from supporting slice 31 front face side the side sheet 34 of turning back of turning back, the oblique plate 35, the butt sheet 36 that are provided with continuously successively in the front of this sheet 34 of turning back rearwards.

The sheet 34 of turning back forms a little the band shape narrower than supporting slice 31, and forms the upper side wall inner surface almost parallel with joint accepting hole 12 after turning back, and forms roughly the same or big slightly with the diameter of heart yearn W1 with the interval of upper side wall inner surface.

Oblique plate 35 forms than the wide a little band shape of sheet 34 of turning back, and is formed slopely in the mode near the upper side wall inner surface of joint accepting hole 12; Butt sheet 36 forms the upper side wall inner surface that is connected to joint accepting hole 12 with precompression.

On oblique plate 35 and butt sheet 36, cross over both and be formed with and overlook to the contact maintaining part of essentially rectangular forms hole 37, the front face side ora terminalis that this contact maintaining part forms hole 37 become keep it with the heart yearn W1 Elastic Contact of the electric wire W of insertion contact maintaining part 38.

The contact maintaining part forms hole 37, the U font hole that stamping-out forms when utilizing joint 3 moulding and cut the tongue piece that forms by this U font hole and the hole that forms forms to downside, and with this tongue piece of having cut as retainer 39.

The connector for connecting wire of Xing Chenging as described above, be configured in both allocations of printed circuit board P shown in Figure 7, the

terminal plate

32,32 of

joint

3,3 is welded to connect on connection boss P1, the P1 of the correspondence of printed circuit board P and is electrically connected with the circuit pattern of printed circuit board P, and binding clasp 6 is welded to connect on connection boss P2, the P2 of the correspondence of printed circuit board P and housing 1 is stably fixed on the printed circuit board P.

Below, dual-purpose Figure 10 illustrates electric wire W with respect to the insertion that connects, is fixed on the connector for connecting wire on the printed circuit board P as described above, connection and is connected releasing.

(1) shown in Figure 10 (a), in the time of when the heart yearn W1 with electric wire W inserts mouthful 13 insertion joint accepting holes 12 from electric wire in, because the top of sheet 34 of turning back of joint 3 is much the same or big slightly with the diameter of heart yearn W1 with upper side wall inner surface almost parallel and its interval of joint accepting hole 12, so heart yearn W1 inserts till butt oblique plate 35 smoothly.

(2) then, in the time of between with the oblique plate 35 of the upper side wall inner surface of the heart yearn W1 press-in connector accepting hole 12 of electric wire W and joint 3 and butt sheet 36, the oblique plate 35 of joint 3 and butt sheet 36 to downside push, displacement and make elastic contact chip 33 that strain take place shown in Figure 10 (b) like that, the contact maintaining part 38 of heart yearn W1 Elastic Contact elastic contact chip 33 and being held, electric wire W is electrically connected by joint 3 with printed circuit board P.

At this moment, the transverse width (for example 1.2mm) that the contact maintaining part forms hole 37 forms to such an extent that insert mouthfuls 13 transverse width (for example 0.8mm) greater than electric wire, so being pressed into easily of heart yearn W1 can improve operation.

Again, when joint accepting hole 12 inserted, the front end butt retainer 39 of heart yearn W1 and limit it and insert was so can prevent the excessive insertion of heart yearn W1 at electric wire W.

Again, the front face side ora terminalis of fenestra 17 forms in retainer 39 front face side, so whether the heart yearn W1 of electric wire W that can be by fenestra 17 visual insertions has been inserted near both allocations (for example the retainer 39) of joint accepting hole 12, can confirm easily whether electric wire W appropriately inserts.

(3) when removing the connection of electric wire W from connector for connecting wire, shown in Figure 10 (c), inserting connection from tool insert hole 16 removes with instrument 5, utilize its leading section to push butt sheet 36 downwards and make its displacement, remove contact, the maintenance of 38 couples of heart yearn W1 of contact maintaining part of elastic contact chip 33, thereby can extract electric wire W from joint accepting hole 12.

At this moment, the leading section butt supporting slice 31 of retainer 39 and prevent butt sheet 36 over-travel downwards applies necessary above external force and prevents fatigue so can be limited on the elastic contact chip 33.

In the aforementioned embodiment, the heart yearn that electric wire has been described is a single line, the situation of utilizing being pressed into of heart yearn and carrying out connecting to the insertion of connector for connecting wire, but the invention is not restricted to this, also can be used for following situation: the heart yearn of electric wire is to twist thread, and the butt sheet that utilizes the connection releasing to push joint with instrument enlarges the upper side wall inner surface of joint accepting hole and contacts the situation of inserting heart yearn between the maintaining part; Or the heart yearn of electric wire is single line, utilize connect remove with instrument push the butt sheet of joint and the upper side wall inner surface that enlarges the joint accepting hole with contact the situation of not carrying out the heart yearn insertion between the maintaining part with being pressed into.

In the aforementioned embodiment, illustrated in order to increase the design freedom that the contact maintaining part forms hole and retainer, utilize U font hole and the hole that forms by having cut of tongue piece to form the situation that maintaining part forms the hole that contacts, but the invention is not restricted to this, for example also can be used for following situation: omit the formation in U font hole and utilize punching to form the contact maintaining part to form the hole, and the stamping-out sheet that wherein stays during stamping-out is as retainer.

In the aforementioned embodiment, illustrated in order to prevent that electric wire from too inserting and prevent the fatigue of elastic contact chip and the situation of retainer of the displacement of restriction butt sheet is set, but the invention is not restricted to this, also can be used for omitting the situation of retainer.

In the aforementioned embodiment, situation about fenestra and tool insert hole being formed continuously in order to form easily fenestra and tool insert hole has been described, but has the invention is not restricted to this, also can be used for fenestra and tool insert hole separated and the situation of formation respectively.

In the aforementioned embodiment, whether the situation that forms fenestra in the part corresponding with the upper side wall of the joint accepting hole of housing has been described in order to utilize the visual heart yearn of judging electric wire to contact, remain on the contact maintaining part of joint, but the invention is not restricted to this, also can be used for omitting the situation of fenestra.

In the aforementioned embodiment, to have illustrated in order making and the heart yearn of electric wire is inserted processing ease in the joint accepting hole will contact transverse width that maintaining part forms the hole to improve operation and form to such an extent that insert the situation of the transverse width of mouth greater than electric wire, but the invention is not restricted to this, the transverse width that also can be used for will the contact maintaining part forming the hole form the situation of the transverse width that inserts mouthful less than electric wire.

Claims

1, a kind of connector for connecting wire is characterized in that, have at front surface to form that electric wire inserts mouthful (13) and be formed with in inside and insert the housing (1) of the joint accepting hole (12) that mouthful (13) be communicated with electric wire and to remain on joint (3) in the housing (1),

Joint (3) has: supporting slice (31) is bearing in the following side of the joint accepting hole (12) of housing (1); Elastic contact chip (33) inserts that mouthful (a 13) side is turned back and elastically deformable ground is provided in the joint accepting hole (12) from the electric wire of supporting slice (31), and with insert mouthful heart yearn (W1) Elastic Contact of the electric wire (W) of (13) insertion from electric wire;

Elastic contact chip (33), have: insert the sheet of turning back (34) that mouthful (13) side is provided with continuously with the electric wire of supporting slice (31), be provided with and be provided with continuously and be connected to the butt sheet (36) of the upper side wall inner surface of joint accepting hole (12) at the front end of the sheet of turning back (34) continuously with the oblique plate (35) that tilts to the approaching mode of the upper lateral part of the joint accepting hole (12) of housing (1), at the front end of oblique plate (35)

Striding across oblique plate (35) forms with butt sheet (36) and contact maintaining part formation hole (37), the ora terminalis that will contact electric wire insertion mouthful (13) side in maintaining part formation hole (37) is made as the contact maintaining part (38) that contacts and keep this heart yearn (W1) with the heart yearn (W1) of the electric wire that inserts (W), in the upper lateral part of the joint accepting hole (12) of housing (1) with the part of butt sheet (36) butt on, be formed for inserting and connect the tool insert hole of removing with instrument (5) (16).

2, connector for connecting wire as claimed in claim 1 is characterized in that: the contact maintaining part forms hole (37), form and overlook rectangular shape, and its transverse width forms to such an extent that insert the transverse width of mouthful (13) greater than electric wire.

3, connector for connecting wire as claimed in claim 1 or 2, it is characterized in that: in the upper lateral part of the joint accepting hole (12) of housing (1) with the part of butt sheet (36) butt on, being formed with can a visual fenestra that has or not (17) that inserts the heart yearn (W1) of the electric wire (W) that mouthful (13) inserts from electric wire.

4, connector for connecting wire as claimed in claim 3 is characterized in that: fenestra (17) forms continuously with tool insert hole (16).

5, as each described connector for connecting wire in the claim 1～4, it is characterized in that: on butt sheet (36), cut the part of butt sheet (36) and formed a retainer (39) with the front end butt of the heart yearn (W1) that inserts the electric wire (W) that mouthful (13) inserts from electric wire to downside.

6, connector for connecting wire as claimed in claim 5, it is characterized in that: the contact maintaining part forms hole (37) and is formed by following two kinds of holes: promptly, utilize the hole of the U font that stamping-out forms and cut the tongue piece that forms by this U font hole and the hole that forms to downside, and with the aforementioned tongue piece of having cut as retainer (39).