CN104218336A - Terminal block - Google Patents

Abstract

It is aimed to provide a terminal block capable of realizing space saving, improving operability in connecting a conductive member and a terminal and suppressing the transmission of vibration between inner and outer conductive members. A terminal block T for connecting inner conductive members and outer conductive members arranged inside and outside a device includes a housing (30) provided to penetrate through a case (2) of the device in an in-out direction, and terminals 10 mounted in the housing (30)and each including a connecting portion (14) to be connected to the outer conductive member and provided on an outer end part and a tubular socket terminal 20 to be fitted and connected to a pin terminal p provided on the inner conductive member and provided on an inner end part. A flexible vibration absorbing portion (12) is provided between the inner and outer connecting portions (20, 14) of the terminal (10).

Description

Terminal board

Technical field

The present invention relates to terminal board.

Background technology

In the past, as the terminal board that the conductive component be located in the electric equipment such as motor, inverter is electrically connected to each other, the terminal board that known following patent documentation 1 is recorded.This terminal board possesses: plastic housing, inside and outside through and be installed on the casing of predetermined equipment; And many butt, be provided with at the two ends of the bus in L-shaped the connecting portion possessing nut, each terminal so that the outer end of the connecting portion with housing that make one end is relative, install side by side by the connecting portion of the other end and housing inner end is relative form.

And, the outer conductive parts be made up of the bus extended from electric equipments such as inverters are connected by the connecting portion in outside of screw threads for fastening with the terminal being installed on terminal board, and the inner conductive parts be made up of the bus extended from electric equipments such as motor are connected by the connecting portion of screw threads for fastening with the inner side of terminal equally, thus realize conducting between corresponding inside and outside conductive component.

Patent documentation 1: Japanese Unexamined Patent Publication 2010-211933 publication

In above-mentioned existing terminal board, particularly by the connecting portion screw threads for fastening of inner conductive parts and the inner side of corresponding terminal and when connecting, the working space needing the instrument making screw threads for fastening to enter in the inside of equipment, thus there is the problem of equipment enlarging, and owing to being the screw threads for fastening operation of device interior, therefore there is the problem of operation difficulty, urgently wish to improve this.

Summary of the invention

The present invention completes based on above-mentioned situation just, and its object is to provides a kind of terminal board, can realize space saving and can improve the connection workability of conductive component and terminal.

The present invention is a kind of terminal board, the inner conductive parts of configuration inside and outside equipment and outer conductive parts is coupled together, it is characterized in that possessing: housing, be arranged to the casing of inside and outside pass-through device; And terminal, be installed on described housing, and the connecting portion with described outer conductive parts is provided with in outer end, be provided with the female terminal of the tubular be fitting to connection with the plug terminal being located at described inner conductive parts at inner end, be provided with between the described inside and outside connecting portion of described terminal and there is flexible absorption of vibrations portion.

According to this structure, by inner conductive parts with when in terminal, the connecting portion of side is connected, plug terminal is chimeric with the female terminal of pairing.Compared with the situation utilizing screw threads for fastening to connect, only that plug terminal is chimeric with female terminal, therefore connect operation itself and become simple, and without the need to the working space of screw threads for fastening, can space saving be realized.

And, the terminal possessed at terminal board is provided with absorption of vibrations portion, therefore when inner conductive parts and outer conductive parts being connected to each other via this terminal, when having effect of vibration at inner conductive parts or outer conductive parts, this vibration is absorbed by absorption of vibrations portion, thus inhibits vibration to feed through to contrary conductive component side.

In addition, preferably following structure.

Be provided with sub-housing, described sub-housing receives described female terminal, and opening has the terminal insertion mouth that can insert for described plug terminal, and described sub-housing is installed on described housing in mode that can be travelling in the direction with Axis Cross.

In the structure shown here, sub-housing adopts so-called floating structure to be installed on housing, even if therefore the allocation position of inner conductive parts and plug terminal exists deviation, sub-housing also can be made to move about and that each plug terminal and female terminal are correctly felt relieved each other is chimeric.

The described absorption of vibrations portion of described terminal is made up of litzendraht wire.

In the structure shown here, absorption of vibrations function can be played more reliably.And when adopting floating structure, the distortion of terminal becomes easy, thus can play float function more reliably.

According to terminal board of the present invention, can space saving be realized and the connection operation of conductive component and terminal can be carried out efficiently, and under the state be connected to each other at inside and outside conductive component, vibration can be suppressed to transmit between inside and outside conductive component.

Accompanying drawing explanation

Fig. 1 is the stereoscopic figure of the terminal board of one embodiment of the present invention.

Fig. 2 is its front view.

Fig. 3 is its end view.

Fig. 4 is its partly cut-away's stereogram.

Fig. 5 is the V-V line cutaway view of Fig. 2.

Longitudinal section when Fig. 6 is the compression molding of housing body.

Label declaration

T: terminal board;

1: gearbox;

2: casing upper wall;

3: through hole;

10: terminal;

11: bus;

12: fexible conductor (absorption of vibrations portion);

14: outside connecting portion;

15: inserting hole;

20: female terminal;

30: housing;

31: housing body;

45A, 45B: embedded hole;

46A, 46B: embeded slot.

50: cover portion;

60: sub-housing;

65: terminal insertion mouth;

68: front side rib;

69: rear side rib;

P: round plug terminal (plug terminal).

Embodiment

< execution mode >

Referring to figs. 1 through Fig. 6, one embodiment of the present invention are described.

In the present embodiment, exemplified with the conductive component of three poles that the three-phase alternating-current motor in the vehicle such as electric motor vehicle, hybrid electric vehicle is arranged and the terminal board T be electrically connected to each other at the conductive component of three poles that inverter is arranged will be equipped on, and show the situation of the structure of the direct attachment type being applied to motor and inverter.

More specifically, as shown in Figure 5, at the upper wall 2 of the casing 1 of speed changer, this terminal board T is set, be adjacent in the front openings side (left side of this figure) of gearbox 1 assemble not shown motor side casing, on the other hand, inverter side casing is also assembled with at the upper surface of this gearbox 1 joined integrally and motor side casing.Further, be electrically connected via terminal board T as described above each other from the conductive component (inner conductive parts) of three poles that motor extends and the conductive component (outer conductive parts) that extends from inverter.

In the present embodiment, the outer conductive parts extended from inverter are buses, on the other hand, enamelled wire is fixed into straight posture by bonding agent etc. and forms by the inner conductive parts extended from motor, as shown in Figure 5, round plug terminal p is connected with coaxially in the front end of these inner conductive parts.

The structure of terminal board T is described in detail.As shown in Figure 1, terminal board T is configured to possess: illustrated three butt 10; And plastic housing 30, these terminals 10 are installed side by side.

Terminal 10 is the structure of end connection as the fexible conductor 12 in absorption of vibrations portion that hang down at the bus 11 being bent to L-shaped.This fexible conductor 12 is structures litzendraht wire being bent to roughly S font.

The end side of terminal 10 and the horizontal part of bus 11 become the outside connecting portion 14 be connected with outer conductive parts, and opening has the inserting hole 15 of bolt.The female terminal 20 played a role as the inner side connecting portion be connected with inner conductive parts is provided with in another side of terminal 10 and the lower end of fexible conductor 12.

This female terminal 20 is two pieces structures of the periphery setting-in cylindrical shell 25 in grid portion of terminal 21.Grid portion of terminal 21 is circumferentially spaced apart and configure the shape of many elastic contact chips 23 ringwise in the leading edge of the base portion 22 of annular, and described elastic contact chip 23 is have contact portion 23A in front and the shape forwards extended.Teat 22A is flexed outwardly formed at the hinder marginal part of the lower surface of base portion 22.And, erect from the trailing edge of the upper surface of this base portion 22 and form connecting piece 24.

Cylindrical shell 25 is formed with the inside chimb 26 of the front end of the elastic contact chip 23 for the protection of grid portion of terminal 21 in its front end.The groove 28 that can insert for above-mentioned teat 22A is formed from trailing edge incision at the lower surface of cylindrical shell 25.Cylindrical shell 25 is flush-mounted in the periphery of grid portion of terminal 21 from front, stop being pressed into, make to turn back relative to base portion 22 from the bonding pad 27 of the projecting pair of right and left of trailing edge, thus carry out anticreep installation when the depth edge of groove 28 and teat 22A offset.

Specifically, the bus 11 forming the L-shaped of terminal 10 is formed as, at outside connecting portion 14 towards on rearward basis, the upper end of fexible conductor 12 is abutted and is fixed on the rear end face of the bottom of this bus 11 by spot welding etc., and the bottom of this fexible conductor 12 is abutted and the same front surface being fixed on the upper end of the connecting piece 24 erected from the base portion 22 of grid portion of terminal 21 by spot welding etc.Form terminal 10 thus, and become in the bottom of this terminal 10, to be provided as the form of the female terminal 20 of inner side connecting portion towards the posture in the direction (left side of Fig. 6) contrary with the bending direction of outside connecting portion 14.

Such terminal 10 possesses three altogether, and each terminal 10 is installed on housing 30 under the form making female terminal 20 be accommodated in sub-housing 60 (with reference to Fig. 5).To describe later for sub-housing 60.

Housing 30 is made up of housing body 31 and cover portion 50.As shown in Fig. 1, Fig. 6, housing body 31 is formed as the elongated and box-shaped of lower surface opening of roughly left and right directions, and edge is formed with laterally long flange 32 thereon, is provided with the installing hole 33 being embedded with the collar 34 at the two ends, left and right of this flange 32.The lower surface circumference of flange 32 is provided with seal mounting groove 35, and the face seal 36 of annular is installed.

Be provided with base block 40 in the upper face center portion of housing body 31, the outside connecting portion 14 of above-mentioned each terminal 10 is installed side by side in base block.This base block 40 be formed respectively place outside connecting portion 14 three pedestals 41, each pedestal 41 with the form caved in from placed side backward surface opening be formed with the receiving room 43 of nut 42.Nut 42 is accommodated in each receiving room 43 by spline.

The manufacturing step of housing body 31 is first described with reference to Fig. 6.First, in the scope of the bus 11 of three butt 10 configured with preset space length by once molding formed and form base block 40, three butt 10 become the form remaining on base block 40 with predetermined gesture.

Then, by with this base block 40 and three butt 10, for core, to implement secondary mould pressing shaping and form housing body 31.Now, each female terminal 20 is formed as form Lower Half being given prominence to slightly by inboard from the lower edge of antetheca 31A of the antetheca 31A in housing body 31 downwards.In addition, also the collar 34 is installed in the lump.

Cover portion 50 and housing body 31 are formed as not consubstantiality, are formed as square dark plate-like to cover the lower surface opening of above-mentioned housing body 31.As shown in Figure 3, the locking frame 51 being formed and can shifting flexibly is erected in the side of the left and right in this cover portion 50, on the other hand, locking teat 38 is provided with in the side of the left and right of housing body 31, when being correctly covered in the lower surface opening of housing body 31 in cover portion 50, locking frame 51 is flexibly embedded in locking teat 38, thus forms housing body 31 housing 30 joined integrally with cover portion 50.

As mentioned above, the female terminal 20 as the inner side connecting portion of terminal 10 is accommodated in sub-housing 60.This sub-housing 60 is synthetic resin system, and as shown in Figure 4 and Figure 5, it is formed as the cylindrical shape of the band antetheca 61 that female terminal 20 can be made to insert from rear.Sub-housing 60 has and the size of the fore-and-aft direction of housing body 31 length dimension mutually, wherein, is excised by the first half in a small half of length areas of rear end side, is formed and back out portion 62.In other words, half portion 63 of Lower Half is only in the rear end side of sub-housing 60.

There is the terminal insertion mouth 65 that can insert for above-mentioned round plug terminal p at antetheca 61 opening of sub-housing 60, be formed with the guide portion 66 of the taper that front expands at the leading section of terminal insertion mouth 65.

At the diapire of sub-housing 60, the lance shape portion 67 locking with the teat 22A of female terminal 20 can be provided with to elastic deflection with the form rearward extended.Female terminal 20 inserts from rear relative to sub-housing 60, make lance shape portion 67 elastic deflection and be pressed into, be pressed into abut with antetheca 61 time teat 22A by the engaging portion 67A in lance shape portion 67, thus lance shape portion 67 restore displacement and engaging portion 67A and teat 22A is locking, female terminal 20 is accommodated in sub-housing 60 by anticreep.

In the periphery of the leading section of sub-housing 60, be specifically the central portion of the thickness direction of antetheca 61, complete cycle is formed the front side rib 68 of level altitude.And, the rear side rib 69 that height is identical with above-mentioned front side rib 68 is formed in the periphery in half portion 63 of sub-housing 60.

On the other hand, as shown in Figure 1 and Figure 5, in the seam of the lower edge of the housing body 31 of the front surface of housing 30 and the upper limb in cover portion 50, there is the embedded hole 45A chimeric with the leading section (antetheca 61) of the sub-housing 60 of the above-mentioned female terminal 20 of storage with the spacing opening identical with the arrangement pitches of terminal 10 (female terminal 20).At the inner face of each embedded hole 45A, complete cycle is formed for the chimeric embeded slot 46A of the front side rib 68 of sub-housing 60.

In addition, as mentioned above, housing body 31 is assembled from rear one with cover portion 50, is therefore pre-formed with the first half of each embedded hole 45A at the lower edge of the antetheca 31A of housing body 31, is pre-formed with the Lower Half of each embedded hole 45A at the upper limb of the antetheca 50A in cover portion 50.

And, be formed with the semicircular embedded hole 45B chimeric with the rearward end in half portion 63 of sub-housing 60 at the upper limb of the rear wall 50B in cover portion 50, be formed with the embeded slot 46B chimeric with the rear side rib 69 of sub-housing 60 at the inner surface (second side face) of this embedded hole 45B.

The internal diameter size of the embedded hole 45A of the front-surface side of housing 30 is set to fixed dimension larger than the outside dimension of the leading section of sub-housing 60, and the internal diameter size of embeded slot 46A is set to same size larger than the outside dimension of front side rib 68.And, the internal diameter size of the embedded hole 45B of the semicircle of the back-surface side of housing 30 is set to same size larger than the outside dimension in half portion 63 of sub-housing 60, and the internal diameter size of embeded slot 46B is set to same size larger than the outside dimension of rear side rib 69.

Then, an example of the number of assembling steps of the terminal board T of present embodiment and the example of this terminal board T are described.

As a part is already described, as shown in Figure 6, by twice compression molding, form the housing body 31 integrally possessing three butt 10.The outside connecting portion 14 of each terminal 10 is positioned over corresponding pedestal 41 with posture toward the front directly over the receiving room 43 of nut 42.And, each terminal 10 as inside connecting portion female terminal 20 equally with posture be toward the front positioned at this embedded hole 45A in the inboard of embedded hole 45 (being the first half of this embedded hole 45A accurate) coaxial on.

Then, according to above-mentioned main points sub-housing 60 is installed on three butt 10 that arrange integratedly in housing body 31 as inside the female terminal 20 of connecting portion.Then, cover portion 50 is covered the lower surface opening of housing body 31.Locking frame 51 is costed locking supporting part 38 and shifts flexibly and boosted from below, lock frame 51 resile when the upper limb in cover portion 50 is connected to the lower edge of housing body 31 and is embedded in locking teat 38, thus by joined integrally for cap 50, form housing 30 as illustrated in fig. 5.

Now, as shown in Figure 5, it is chimeric with embeded slot 46A that each sub-housing 60 becomes front side rib 68, leading section is entrenched in state in the embedded hole 45A of the front-surface side of housing 30 in radial direction with predetermined clearance, and, it is chimeric with embeded slot 46B that half portion 63 of sub-housing 60 becomes rear side rib 69, and be entrenched in state in the embedded hole 45B of the semicircle shape of the back-surface side of housing 30 in radial direction with predetermined clearance.That is, each sub-housing 60 in the bottom of housing 30 to allow in the direction (radial direction) with Axis Cross form travelling in clearance to install on the basis of movement being limited axis direction (fore-and-aft direction).

Relative to such housing 30, insert nut 42 at the receiving room 43 of each pedestal 41, and the seal mounting groove 35 installed surface seal 36 of lower surface at flange 32, complete terminal board T thus.

The terminal board T of assembling described above is arranged on the upper wall 2 of gearbox 1 as illustrated in fig. 5.Specifically, the bottom of housing 30 is inserted from top relative to the through hole 3 at casing upper wall 2 opening, then, bolt is inserted into the installing hole 33 of flange 32, and be screwed into the bolt hole of casing upper wall 2, thus flange 32 i.e. terminal board T is fixed on casing upper wall 2.By in the lump face seal 36 elastic compression being pressed into the peritreme of through hole 3, thus realize the sealing of through hole 3.

After installation end daughter board T like this, the outside connecting portion 14 of each terminal 10 becomes the state of the upper surface side (outside) being exposed to casing upper wall 2 under the form of the upper surface being configured at housing 30 (base block 40).On the other hand, terminal 10 as inside the female terminal 20 of connecting portion become and be accommodated in that be supported to can relative to the form of housing 30 in the sub-housing 60 that radial direction is moved about.

Then, the step that the conductive component utilizing this terminal board T by the conductive component of three poles of three-phase alternating-current motor and three poles of inverter is connected to each other is described.

First, the inner conductive parts (enamelled wire) of three poles of motor side connect with the inner side connecting portion of corresponding terminal 10, now, the round plug terminal p being located at the front end of enamelled wire is inserted into by the terminal insertion mouth 65 of the sub-housing 60 in the installation of the bottom of housing 30 female terminal 20 being positioned at its inboard as indicated by the arrows in fig. 5.

Now, even if round plug terminal p is relative to the dislocation of female terminal 20 core, round plug terminal p is also felt relieved along with guide portion 66 and is inserted.

Further, there is deviation in the allocation position for each round plug terminal p, and particularly the larger situation of core dislocation, inserts along guide portion 66 along with round plug terminal p, the fexible conductor 12 in terminal 10 is out of shape and sub-housing 60 radially moves, thus realize centering.

Then, round plug terminal p makes the elastic contact chip 23 of grid portion of terminal 21 expand to be shifted and to be pressed into, when stopping press-in, elastic contact chip 23 is to necking square to restoring action, thus round plug terminal p and female terminal 20 are flexibly chimeric each other contacts, the inner conductive parts (enamelled wire) of three poles of motor side are connected with the inner side connecting portion (female terminal 20) of corresponding terminal 10.

Then, motor side casing is adjacent to assembling in the mode of the front openings covering gearbox 1.

Then, the outer conductive parts (bus) of three poles of inverter side are connected with the outside connecting portion 14 of corresponding terminal 10.In addition, although not shown, each bus is overlapping with the outside connecting portion 14 that the upper surface at housing 30 configures side by side, bolt is made to pass the inserting hole of bus and the inserting hole 15 of outside connecting portion 14, with by spline be accommodated in receiving room 43 nut 42 to screw togather and fastened, thus the outer conductive parts (bus) of three poles of inverter side to be connected with the outside connecting portion 14 of corresponding terminal 10.

Then, inverter side casing is assembled at gearbox 1 joined integrally as described above with the upper surface of motor side casing.

By more than, the conductive component being located at three poles of three-phase alternating-current motor is electrically connected via terminal board T each other with the conductive component of three poles being located at inverter, and builds the terminal connecting structure of form motor and inverter are directly connected.

Like this, under the state that the inner conductive parts of motor side and the outer conductive parts of inverter side are connected via the terminal 10 of terminal board T, the inner conductive parts of such as motor side may vibrate, but owing to being provided with fexible conductor 12 in the midway of terminal 10, therefore this vibration is absorbed by fexible conductor 12, inhibits it to be delivered to the situation of the outer conductive parts of opposition side.Therefore, the threaded fastener portion of outer conductive parts is prevented to get loose.And the vibration acting on outer conductive component side is absorbed by fexible conductor 12 similarly and inhibits conductive component to the inside to transmit.

In the present embodiment, connecting in the structure of the part of the inner conductive parts of motor side to the inner side connecting portion of the terminal 10 being installed on terminal board T, round plug terminal p is set at inner conductive parts, on the other hand, is formed the inner side connecting portion of terminal 10 with female terminal 20.Therefore, when inner conductive parts are connected with the inner connecting portion of terminal 10, by realizing chimeric with the female terminal 20 of pairing for round plug terminal p.

Compared with the situation such as utilizing screw threads for fastening to connect, only by chimeric with female terminal 20 for round plug terminal p, therefore connect operation itself and become simple.And, without the need to the working space of screw threads for fastening, therefore can achieve space saving, the miniaturization of such as motor casing can be realized.

And, the terminal 10 possessed at terminal board T is provided with the fexible conductor 12 as absorption of vibrations portion, therefore when having effect of vibration at inner conductive parts or outer conductive parts, this vibration is absorbed by fexible conductor 12, thus inhibits vibration to feed through to contrary conductive component side.

And the female terminal 20 of each terminal 10 is accommodated in sub-housing 60 respectively, on the other hand, namely each sub-housing 60 adopts the mode of so-called floating structure to be installed on housing 30 can move about in radial direction.Such as, there is deviation at the allocation position of each internal conductive member and each round plug terminal p, namely the larger situation of core dislocation is inferior, sub-housing 60 can be made to move about and that each plug terminal p and female terminal 20 are correctly felt relieved each other is chimeric.Especially, improve the rigidity of the inner conductive parts possessing round plug terminal p, when the deflection deformation amount of these inner conductive parts self exists boundary effectively.

In addition, sub-housing 60 radially moves about while making terminal 10 be out of shape, and by arranging fexible conductor 12 in a part for terminal 10, terminal 10 is easily out of shape, thus can play float function more reliably.

Other execution modes of < >

The present invention is not limited to the execution mode illustrated according to above-mentioned record and accompanying drawing, and such as following execution mode is also included in the technical scope of the present invention.

(1) in the above-described embodiment, the absorption of vibrations portion possessed as terminal is exemplified with the fexible conductor be made up of litzendraht wire, also can be but that the structure etc. that ripple processes is applied with, as long as possessing flexibility also can be then other structures to sheet metal.

(2) the present invention can be applied to equally terminal as inside the female terminal of connecting portion do not possess float function and be configured in the structure of fixed position.

(3) in the above-described embodiment, the situation of round plug terminal is provided with exemplified with the front end at inner conductive parts, it also can be but the plug terminal of the odd-shaped cross section beyond positive round, in this case, the terminal possessed at terminal board as inside the female terminal of connecting portion adopt the female terminal possessing the tubular of the cross sectional shape closely chimeric with above-mentioned plug terminal.

(4) in the above-described embodiment, exemplified with the situation of casing terminal board being installed on other equipment beyond motor casing, inverter box body, not-go side daughter board also can be located at such as motor casing, and such structure is also included within technical scope of the present invention.

(5) in the above-described embodiment, adopt the situation of the so-called form be directly connected exemplified with motor and inverter, but the present invention can be applied to the structure of the form that motor and inverter are arranged respectively equally.

(6) the present invention is not limited to motor and inverter, can be widely used in all terminal boards be electrically connected to each other by the conductive component extended respectively from two electric equipments.

Claims (3)

1. the inner conductive parts of configuration inside and outside equipment and outer conductive parts are coupled together, it is characterized in that by a terminal board,

Possess: housing, be arranged to the casing of inside and outside pass-through device; And

Terminal, is installed on described housing, and is provided with the connecting portion with described outer conductive parts in outer end, is provided with the female terminal of the tubular be fitting to connection with the plug terminal being located at described inner conductive parts at inner end,

Be provided with between the described inside and outside connecting portion of described terminal and there is flexible absorption of vibrations portion.

2. terminal board according to claim 1, is characterized in that,

Be provided with sub-housing, described sub-housing receives described female terminal, and opening has the terminal insertion mouth that can insert for described plug terminal,

Described sub-housing is installed on described housing in mode that can be travelling in the direction with Axis Cross.

3. terminal board according to claim 1 and 2, is characterized in that,

The described absorption of vibrations portion of described terminal is made up of litzendraht wire.