CN1146646A - Terminal box - Google Patents

Abstract

A connector assembly (10; 30; 120, 140; 210; 230) comprises a female connector and a male connector for insertion in the female connector. A latching arm (20, 130, 220) is provided on one of the female and male connectors, and a latching abutment (33, 143, 233) is provided on the other of the female and male connectors. Insertion resistance means are effective only in the insertion direction to increase the latching force.

Description

Terminal box

The present invention relates to a kind of electric terminal box, Drawing upon one locking arm remains on locking state.

The electrical wiring cartridge of Figure 30 and a kind of routine of 31 expressions, it has public affairs and female two parts.Female terminal box 1 includes the tubular end plug-in unit 3 of an oblique tip, is plugged with female terminals folder 2 in this end plug-in unit.This end plug-in unit 3 is inserted into public terminal box 4, in the shell 6 of public access line end pin.Have one on the end face of end plug-in unit 3 by foot 7 hammerlocks that supported 8.Hammerlock 8 can be movable for propping up direction shown in the arrow of pressing compound bending with foot 7.

Be extruded with one for the block 9 that cooperates usefulness from the end face of public terminal box 4 shells 6.When in the end plug-in unit 3 of female terminal box 1 extend into the shell 6 of public terminal box 4, going, the front end of hammerlock 8 contact with contact-making surface 9a (seeing Figure 30) for the block 9 that cooperates usefulness.As soon as end plug-in unit 3 by more powerful push in the shell 6 after, hammerlock 8 is flexibly changing the position so that is riding on the block 9 that cooperates usefulness (seeing Figure 31).Hammerlock 8 is crossed over this block 9 and is returned to its home position then.Have benefited from this action, arm 8 is combined closely mutually with the mating surface 96 of the block 9 that cooperates usefulness, and terminal box 1 and 4 also is in connecting state together with public access line end pin 5 and female terminals folder 2 by bolt together simultaneously.In order to open this bolt-lock state, thereby the rearmost end of hammerlock 8 is depressed the block 9 of the usefulness that disengages by finger, and two terminal boxes are extracted separately.This type of terminal box assembly has been well-known.

Yet, in above-mentioned view, cooperating to improve if increase the insertion resistance that cooperates block 9 to be caused from hammerlock 8 leaps, the problem of initiation is: become difficult to achieve for hammerlock 8 is unclamped the necessary ON operation of separating from its mated condition.

The reason that the problems referred to above take place will be set forth in down.Insert resistance and be the function of lever arm length L between foot 7 and hammerlock 8 front ends as shown in figure 30.This lever arm is done weak point, and inserting resistance will increase.Plug-in unit 3 front ends are carried than shifting to more shown in Figure 30 in foot 7 position, can cause brachiums to increase and unclamp hammerlock 8 required extra levers and benefit so that provide from foot 7 to the rear end.Yet the amount of moving down of rear end is subjected to the restriction of terminal box body, and if the arm of loosening done weak point again, the power of loosening can not need to increase with exempting from.

Moreover, in above-mentioned conventional view, in order to tackle, for example, the termination of following multiterminal head terminal box and coming cooperates the increase of resistance, if hammerlock 8 is crossed over the resistance of generations when cooperating the block of using 9 still for increasing, just cause another problem: for the ON operation of separating that hammerlock 8 is unclamped under its mated condition becomes and is difficult to implementation.

The reason of this problem is as follows.In order to set high insertion resistance, a kind of way is exactly to increase the height that cooperates block 9.Yet under above-mentioned view, for release, the original route that hammerlock 8 must be passed by when it cooperates returns.Cause in unlocking operation, must make the front end of hammerlock 8 move to a big scope so that cross over cooperation block 9 for this reason, also must have brute force just can do this operation, and this just makes unlocking operation become difficult.Therefore, in conventional terminal box, existingly closely cooperate and be easy to unlocking operation and can not get both.

Say that more a kind of what is called " inertia is sealed " is arranged, for example, be used for the requirement terminal box and strengthen under the close-fitting situation.To set the insertion resistance that when hammerlock 8 is crossed over blocks 9, forms greater than follow male and female terminals 2 and 5 to join cooperation resistance that timing produces for this reason, just can reach this inertia and cooperate.In other words, insert resistance less than cooperating resistance, just might at two terminals 2 and 5 under half engagement state, be through with just insert operation if set.But, if make by above-mentioned the sort of setting, and terminal box grafting process up to hear be accompanied by cooperate appropriate sending " " till the sound, the grafting process of this terminal box is accompanied by that 8 pairs of hammerlocks cooperate the leap of block 9 and the resistance that is subjected to block continuously, like this, people can confirm that terminals 2 and 5 will reach complete mated condition.The high benefit that can reach in view of the above, is: can avoid equipment that the phenomenon of part cooperation takes place on general assembly line from the beginning.

Moreover, in order to increase the firmness of cooperation, also provide Japanese public publication HEI2-95174 described the sort of technology.Have in the outline drawing shown in Figure 32: the resistance that the hammerlock of using except that stop 111 is provided, provide the arm 112 of additional friction during also promising the cooperation, they are installed on the public foot 113.

Yet,, just must increase the thickness of public foot 113 to gain in strength if attempt to increase the firmness that cooperates resistance to increase cooperation.But, because the basic part 111 of hammerlock and provide the arm 112 of resistance to be made in equably to link on the shell 114 by a public foot 113, not only make the elasticity variation of hammerlock 111, if increase the intensity of public foot 113 for the fastness of improving cooperation, it is difficult that unlocking operation also will become.

Correspondingly, target of the present invention is exactly will increase insertion force so that guarantee the joint fully of terminals, allows hammerlock be easy to free simultaneously.

The present invention has considered to develop after the above-mentioned situation.The purpose of this invention is to provide the terminal box that unlocking operation is easy to carry out, simultaneously identical secure fit can be arranged.

A kind of terminal box assembly is proposed according to the present invention, it comprises a female terminal box and and connects the public terminal box that box is used for inserting this mother, wherein public and female terminal box the two one of have the tight arm of a bolt and public and femalely connect in female box another and have the tight block of a bolt for the interlock with it of the tight arm of bolt.Tight arm of bolt and the tight block of bolt have the tight power of bolt, thereby simultaneously the tight arm of bolt and the tight block of bolt mutually interlock with public terminal box detachable remain in female terminal box, this assembly also includes the insertion drag devices on public and female terminal box, during use, insert the resistance device and only work to increase the tight power of bolt in direction of insertion.

That is to say, the present invention proposes a kind of terminal box assembly, include a female terminal box and for inserting the public terminal box of this female terminal box, wherein public or female terminal box the two one of have a bolt-lock arm and in the two another of public or female terminal box has block that a bolt-lock uses so as with the interlock mutually of bolt-lock arm, bolt-lock arm and bolt-lock link stopper have the tight power of a bolt, with the bolt-lock block mutually the bolt-lock arm of interlock public terminal box removably is hinged with in female terminal box, this also is included in insertion drag devices in public affairs and the female terminal box to assembly, in use, inserting drag devices only works to increase the tight power of above-mentioned bolt in direction of insertion.

Wherein, above-mentioned insertion drag devices be included in above-mentioned terminal box the two one of on an elasticity insert arm and at the embedding block of above-mentioned another terminal box.

Wherein, above-mentioned insertion arm with embed block mutually during interlock, insert the arm strain, cause public terminal box by this and be inserted into mother and connect resistance when going in the box.

Wherein, it comprises two and inserts arm and the tight arm of bolt, and both arms are positioned at each side of single armed.

Wherein, above-mentioned insertion arm is bigger than the rigidity of the tight arm of above-mentioned bolt.

Wherein, above-mentioned insertion arm is shorter than the tight arm of above-mentioned bolt.

Wherein, above-mentioned insertion arm and the tight arm of above-mentioned bolt are installed on the terminal box by corresponding foot separately.

Wherein, above-mentioned insertion arm and the tight arm of above-mentioned bolt are installed on the same terminal box.

Wherein, the foot of the foot of the tight arm of above-mentioned bolt and above-mentioned insertion arm is adjoining.

Wherein, above-mentioned insertion arm and the tight arm of above-mentioned bolt have public foot.

Wherein, above-mentioned insertion arm constitutes the part of the tight arm of above-mentioned bolt.

Wherein, the tight arm of bolt stretches out in a side of relevant foot, and foot plays a part fulcrum, and an end of the tight arm of bolt is used for and the tight block interlock of bolt, and the other end has a contact-making surface, and when exerting pressure thereon, the tight arm of bolt is sufficient and crooked to decontrol the tight block of bolt around fulcrum.

Wherein, inserting arm is exactly the tight arm of bolt.

Wherein, the tight arm of bolt is contained on the foot.

Wherein, the tight arm of bolt stretches out in a side of foot, and foot plays point action, and the other end of the tight arm of bolt is used for and the tight block interlock of bolt, and the other end has a contact-making surface, when exerting pressure thereon, the tight arm of bolt around fulcrum foot and flexural deformation to decontrol the tight block of bolt.

Wherein: the tight arm of bolt include the tight face of a bolt for the tight projection of bolt mutually interlock use; With an inserting surface for and insert the projection usefulness that leans.

Wherein, above-mentioned inserting surface is than the more close foot of the tight face of bolt.

Wherein, it comprises two inserting surfaces, and inserting surface is positioned at each side of the tight face of bolt.

Wherein, arrange the tight arm of bolt on the direction of insertion of terminal box, carry out elastic bending deflection on first plane, and at second plane deformation in order to decomposing two terminal boxes, the tight arm of bolt big in ratio of rigidity second plane on first plane.

Wherein, first and second plane is orthogonal.

Wherein, the tight arm tool of bolt fork-shaped end, when terminal box was inserted, this fork-shaped end can and be separated in the distortion of first plane inner bending.

The additional disclosure of mode and the several optimum examples described referring to accompanying drawing becomes clearly other features of the present invention by way of example, and accompanying drawing has:

Fig. 1 connects the perspective view of box for representative first embodiment of the invention mother.

Fig. 2 is the part perspective view of the female terminal box hammerlock of first embodiment.

Fig. 3 is according to the vertical cross section of first embodiment by public and female terminal box.

Fig. 4 is the plane graph of and female terminal box public according to first embodiment.

Fig. 5 is the vertical cross section of and female terminal box public according to first embodiment.

Fig. 6 is the vertical cross section of engagement process among expression first embodiment.

Fig. 7 is the vertical cross section of engagement process among expression first embodiment.

Fig. 8 is the vertical cross section of mated condition among expression first embodiment.

Fig. 9 is the vertical cross section of the process of loosening among expression first embodiment.

Figure 10 is the perspective view of the projection of expression the present invention embodiment.

Figure 11 is the vertical cross section of the terminal box of formation second embodiment of the invention.

Figure 12 is the part vertical cross section of second embodiment, and its expression elastic arm just contacts with a projection.

Figure 13 is similar to Figure 12, and its expression elastic arm is just being crossed over a projection.

Figure 14 is the vertical cross section of second embodiment of the invention, and its expression public affairs and female terminal box are in mated condition.

Figure 15 is the part vertical cross section of second embodiment, the interlock situation of the tight arm of its expression bolt.

Figure 16 is the part perspective view of second embodiment of the invention, its expression tight arm of bolt and projection.

Figure 17 is similar to Figure 16 but represent another kind of arrangement.

Figure 18 is the perspective view similar to Figure 16, just represents a kind of other arrangement.

Figure 19 is the perspective view similar to Figure 16, and it represents another kind of arrangement.

Figure 20 is the perspective view similar to Figure 16, and it represents another arrangement.

Figure 21 is the vertical cross section of public and female terminal box of formation third embodiment of the invention.

Figure 22 represents the vertical cross section of engagement process among the 3rd embodiment.

Figure 23 represents the vertical cross section under the cooperation packed state of the 3rd embodiment.

Figure 24 represents the vertical cross section of loosening of public affairs and the female terminal box of the 3rd embodiment.

Figure 25 is the hammerlock of the 3rd embodiment and the perspective view that supplies the block of cooperation usefulness.

Figure 26 is a plane graph, represents hammerlock among the 3rd embodiment and cooperates the initial interlock of block.

Figure 27 is a plane graph, represents hammerlock among the 3rd embodiment and cooperates the engagement process of block.

Figure 28 is a plane graph, represents the ending of engagement process among the 3rd embodiment.

Figure 29 is a plane graph, represents hammerlock among the 3rd embodiment and cooperates the changing type of block.

Figure 30 is the profile of the engagement process of conventional public terminal box and female terminal box.

Figure 31 is the profile of the engagement process of conventional public terminal box and female terminal box.

Figure 32 is the perspective view of another kind of conventional public terminal box.

The first embodiment of the present invention is described below and can consults accompanying drawing 1 to 9.

Figure 1 shows that the female terminal box among first embodiment.The terminal box shell of being made by organic resin 11 includes the female terminals folder of a permission 12 end plug-in units of assigning wherein 13, and one almost whole around the case 14 of holding plug-in unit 13 first halfs and being covered.End plug-in unit 13 is pipe tip shape.Case 14 also is pipe tip shape, just on the corner little song.Between the periphery of case 14 and end plug-in unit 13, cause one to be of the insertion (Fig. 3) of the adapted space of oblique tip shape for relevant public terminal box 30.

Female terminals folder 12 is prevented to deviate from from end plug-in unit 13 by the common point shoulder 13a on the end plug-in unit 13, and plays dual pulling by baffle plate 13b and end effect.This is a conventional structure.In addition, the periphery at end plug-in unit 13 disposes sealing ring 13c.

As shown in Figure 3, Xiang Guan public terminal box 30 has a tubulose binding shell 31 that stretches out forward.Public access line end pin 32 protrudes out in linking shell 31.Public terminal box 30 is inserted into the inside of interior week of female terminal box 10 cases 14 under guiding.When terminal box 10 and 30 correctly is combined together, female end folder 12 and male end pin 32 be in electric binding by the locking device that will describe after a kind of and the mated condition of tacking under.

The center line vicinity of binding shell 31 end faces of public terminal box 30 is raised with a block 33.This block 33 is an inclined-plane at it towards the side that bus connects box 10, and its reverse side then is a vertical plane, (see figure 2).These external both sides have a living projection 34 are respectively arranged, and its position is than block 33 more close terminal box leading edges.

Projection 34 has the face of near vertical at it towards a side of female terminal box 10, and this is mutually aaset bit with regard to the vertical plane that makes it and block 33.Opposite side beveling 34a at projection 34.Block 33 is positioned at the center line of continuous shell 31 approx, and two projections 34 then are distributed in its each limit symmetrically.

One T shape hammerlock 20 is taken root equably on the end face of female terminal box 10 and is had resiliency supported foot 18.Make anti-skidding pressure arm 22 in its back-end.Pressing and making front end by this pressure arm 22 is that fulcrum upwards lifts with foot 18.

The front end of hammerlock 20 is the plane normally.Be formed centrally a mating holes 23 therein, it cooperates with block 33 in use.Each side at this mating holes 23 has a contact shoulder 24, and it contacts with projection 34 at the rear in hole.

The present mechanism of present embodiment once.When female terminal box 10 matched with public terminal box 30, end plug-in unit 13 entered in the binding shell 31 of public terminal box 30, and at first the contact on the hammerlock 20 is takeed on 24 and bumped against projection 34 (see figure 6)s.In this stage, because the face that reclines mutually on the projection 34 almost is vertical, it is very big to insert resistance.When female terminal box with the more powerful clothes of making every effort to overcome when inserting resistance and being pushed into, hammerlock 20 changes the position because of elasticity so that contact shoulder 24 is crossed over projection 34 (see figure 7)s.So, cooperating resistance is big comparatively speaking, and this is because the position of contact shoulder 24 is approached foot 18 comparatively speaking, makes the short and small cause of lever arm.Along with the further pressurized of female terminal box, contact shoulder 24 is crossed projection 34 fully.This situation one takes place, and the front end of hammerlock 20 is owing to left elasticity moves down, and the result hits and links the end face of shell 31 to public terminal box 30, and sends " clatter " one.Because cooperating, the huge name of active force reaches tight.Crossed over projection 34, two terminal boxes and reach bolt-lock state shown in Figure 8 along with contact shoulder 24, the thrust mating holes and the block 33 of hammerlock 20 are just suitable simultaneously.In addition, when terminal box 10 and 30 was in the bolt-lock shape, public access line end pin 32 just was inserted completely in female terminals folder 12 and goes to cause correct being connected.

When terminal box 10 and 30 will be separated, an available finger or thumb were pressed the pressure arm 22 of hammerlock 20.After pressing, hammerlock 20 is that the fulcrum change of location lifts its front end with foot 18.Mating holes 23 has left block 33, and lock is opened.At this moment, female terminal box 10 can be separated with public terminal box 30.

So, distance is shorter comparatively speaking because contact shoulder 24 is from supporting foot 18 according to the present invention, and producing when terminal box 10 and 30 is connected has huge elastic resistance.The result can reach firmly and combine closely.Even thereby under the situation of multiterminal head terminal box (wherein since each separately between the end folder in conjunction with the time produced big resistance), the firm tightness of its cooperation also can surpass the resistance when cooperating.As a result of, it is sealed that the assembly manipulation of this terminal box becomes so-called inertia.

Moreover, separating ON operation also becomes and is easy to.This is that the result only need press pressure arm 22 gently can make hammerlock 20 elastic bendings to release conditions (Fig. 9) because the mating holes 23 of hammerlock 20 is positioned at than contact shoulder 24 from the distances of foot 18 for big with respect to foot 18.

Also have, especially in the present invention, owing at the bilateral of mating holes 23 contact shoulder 24 is arranged all, when the contact shoulder 24 of hammerlock 20 contacted with projection 34, what produced was balanced resistance, and this lateral deviation that has just prevented hammerlock 20 is moved.

Figure 10 represents another embodiment, and wherein two sides that play the block 33a of locking bolt effect have single projection 34b.What adopt is correspondingly hammerlock.

The second embodiment of the present invention can be consulted Figure 11 to 16 and is described below.

Figure 11 right side is depicted as female terminal box 120 of present embodiment.As first embodiment, terminal box shell 121 is made by organic resin, and has end plug-in unit 123, and female terminals folder 122 wherein is housed; And case 124 is in order to admit corresponding public terminal box 140.

Female binding clip 122 keeps the location by point shoulder 123a and baffle plate 123b.

Shown in the left figure of Figure 11, corresponding public terminal box 140 has the binding shell 141 with a public access line end pin 144.When two terminal boxes correctly are combined together, female end folder 122 and male end pin 144 be in electric binding by the locking device that will describe after a kind of and the mated condition of tacking under.

In the central vicinity of public terminal box 140 end faces one block 142 is arranged.In every side of block 142 one, two lugs 143 are altogether arranged, the side 142a that connects box 120 towards mother on piece almost is vertical, a gentle slope formula, the resistance face 142b that disappears and fall then on another side.Each lug 143 tilts in the side towards female terminal box 120 cases, and its back to the side be approximately perpendicular.

On two elastic bearing foots 128 on female terminal box end face, two hammerlocks 130 of being separated by and being provided with are arranged.Hammerlock 130 stretches out towards linking shell 121 front ends.Front end at each hammerlock 120 has downward lock pawl 131.The gradient of the front end face of each lock pawl 131 and the inclined-plane 143a unanimity of relevant lug 143.In addition, the rear end of each hammerlock 130 and foot 128 pressure arms 132 of making even one and having an anti-skidding shape.Pressing the lock pawl 131 that pressure arm 132 causes front end is that fulcrum is picked up with foot 128.

As shown in figure 16, elastic arm 133 stretches out from the centre of two hammerlocks 130.Arm 133 is made even one by supporting foot 134 with linking shell, just looks like that lock/arm 130 is such.The front end of arm 133 have one stretch out downwards, near vertical and be arranged in feeler 135 on the same horizontal plane with lock pawl 131.Yet, since the foot 134 of arm 133 than the foot 128 of hammerlock 130 from the front end that links shell 121 more closely, the length L 1 of arm 133 is shorter than the length L 2 of hammerlock 130.

Explain the mechanism of second embodiment now.When female terminal box 120 cooperated with public terminal box, end plug-in unit 123 entered in the connection shell 141 of public terminal box 140, and when a half is finished in cooperation, the adjacent surface 142a that the feeler 135 of elastic arm 133 is answered back to block 142 goes up (seeing Figure 12).Because the anti-surperficial 142a that collides protrusion 142 almost is vertical, arm 133 is out of shape because of elasticity.When female terminal box 120 with bigger when trying hard to recommend into, arm 133 strains so that feeler 135 are crossed over anticollision protrusions 142 (seeing Figure 13).In the case, because the length L 1 of arm 133 is relatively short, the elastic force that produces when the anti-collision of elastic arm 133 leaps protrusion 142 is just bigger comparatively speaking.The result is exactly: cooperate resistance bigger.

Feeler 135 is gone beyond the face 142b that resistance disappears and falls when female terminal box 120 continues to compress into, and cooperates resistance sharply to descend thereby make, and impels female terminal box 120 to be drawn into public terminal box 140.Correspondingly, this engagement process causes cooperating closely.

Moreover, when arm 133 was crossed over protrusion 142, each lock pawl 131 contacted with corresponding inclined-plane 143a.Thereupon, hammerlock 130 finally is guided and strides across lug 143.Because the another side 143b of lug 143 almost is vertical configuration, crossed over moment of lug 143 at hammerlock 130, lock pawl 131 clashes into connection shell 141 end faces of female terminal box 140 for the elasticity of hammerlock 130 and sends " tower " one.Correspondingly, by Figure 14, along with public access line end pin 144 is inserted in female terminals folder 122 fully.Two terminal boxes have reached the bolt-lock condition as shown in figure 15.

When thinking separately terminal box 120 and 140, available singly refer to or thumb is pressed the pressure arm 132 of hammerlock 130.Finish this afterwards, hammerlock 130 128 is that fulcrum changes shape with foot, makes lock pawl 131 upwards pick up, and has untied and the cooperating of 143 of lugs.Carve at this moment, if female terminal box 120 is outwards pulled out from public terminal box 140, female terminal box is untied from the binding shell 141 of public terminal box 140.Herein the feeler 135 of elastic arm 133 still with block 142 interferences.But, when the anti-collision of feeler 135 leaps protrusion 142, do not produce huge resistance owing to prevent that collision protrusion 142 is the face 142b that gentle slope formula, a resistance disappear and falls towards the side that cooperates direction.This just makes opens this cooperation and is easy to.

In such cases, according to this second embodiment, terminal box 120 and 140 is connected with huge cooperation resistance, is able to firmly closely so make to cooperate.Because lacking than the brachium of hammerlock 130, arm 133 set brachium L1 just produced huge resistance.Even thereby under the situation of multiterminal head terminal box, (wherein can make large drag forces) because of the binding cooperation between terminal stud, the cooperation binding effect of terminal box still can guarantee to become the sealed type of action of so-called inertia.

Moreover, separate ON operation and become relatively easy.Even this is also to interfere and protrude the cause that block 142 does not produce large drag forces yet because elastic arm 133 is taken direction apart in terminal box.This is reached with regard to making cooperation optimum efficiency that is both closely reliable and that be easy to open.

In addition, as special feature among second embodiment: because hammerlock 130 is a pair of along cooperation directions arrangement formation, and arm 133 is between this is to hammerlock 130, so hammerlock 130 and elastic arm 133 are aligned with each other approx.Final effect is: terminal box has compacter general shape.

In addition, the block 142 that is also advantageous in that of second embodiment is arranged on along on the direction of motion of arm 133.

The various different profiles of second embodiment are shown in Figure 17-20.

Figure 17 shows a wide block 14, and it can guarantee arm 130 and 133 correct guidings.

Figure 18 shows a kind of arrangement, and wherein two block 142d are located at each side of projection 143d, and arm 133 and 130 correspondingly is set to long and short two kinds of lever arms from relevant fulcrum.

Figure 19 is similar to the embodiment among Figure 16, and just block 142e is not easy to the side slope untied.The side slope 135b that replaces it is arranged at the below of diagram arm 133.

Figure 20 shows that arm 130 is arranged on the terminal box and arm 133 is arranged on another terminal box, correspondingly is provided with block 142 and lug 143.

The third embodiment of the present invention can be consulted Figure 21 to 25 and is set forth in down.

Be depicted as female terminal box 210 of present embodiment on the right side of Figure 21. Terminal box 210 and 230 to first and second embodiment in similar.

Illustrated public terminal box 210 is made in a kind of electric device equably, on the shell such as relay (not demonstrating).When terminal box 210 and 230 time-out ordinatedly correctly, female terminals folder 212 and public access line end pin 232 be in electric binding by the locking device that will describe after a kind of and the mated condition of tacking under.

Public terminal box 230 is formed with the cooperation projection 233 of side's bench-type on the end face of its binding shell 231.Insert at the end of female terminal box 210 on the supporting foot 218 on the end face in chamber 213 and be provided with hammerlock 220, it is stretched on the cooperation direction of terminal box 210 and 230.The pressure arm 221 of making anti-skidding shape is arranged on the rear end of hammerlock 220 (among Figure 21 right-hand).When operating this pressure arm 221, hammerlock 220 can be out of shape towards the lower right.By supporting foot 218 forward, done one along the cooperation direction of the center line of hammerlock 220 and split groove 222 (Figure 25).Therefore, hammerlock 220 is split into left sheet and right sheet.The principal arm sheets 223 that stretched forward by supporting foot 218 are arranged on each sliver and be contained in the principal arm sheet front end cooperation boots 224 stretched of side again.Make eaves shape extension 225 on each principal arm sheet 223, it extends to the front end that cooperates boots 224 always.In addition, the left and right-hand cooperation boots are that mutual side is stretched and drawn close.Thereby the side that splits groove 222 constitutes the spoon shape space except that cooperating boots 224.

Split groove 222 and be with public terminal box 230 on the projection that cooperates usefulness 233 corresponding, and this cooperates the position of projection 233 will make it to be inserted to split in the groove 222.As shown in figure 26, make oblique spigot surface 226 in the front portion of hammerlock 220.This two oblique spigot surface 226 near hammerlock front end place splitting groove 222 as center line and widens slightly.

Finish a half when female terminal box 210 and public terminal box 230 match, hold plug-in unit 213 to enter in the binding shell 231 of public terminal box 230 and when cooperating, cooperate the front end of boots 224 to run into the projection 233 (seeing Figure 22 and 26) that cooperates usefulness on the hammerlock 220.Because the leading section of hammerlock 220 has the forward oblique spigot surface of widening to some extent 226, and each principal arm sheet 223 of hammerlock 220 is open along oblique spigot surface 226 side direction, the projection 233 of cooperation usefulness embeds to split in the groove 222 then (sees Figure 27).When two terminal boxes are in correct cooperation position, cooperate the rear end of boots 224 to arrive the position of crossing over projection 233.Finally, principal arm sheet 223 flexibly recovers its raw bits, and as shown in figure 28, owing to cooperate boots 224 to encase the back of projection 233, the projection 233 that hammerlock 220 is engaged usefulness stops.

In the engagement process of terminal box, cooperate boots 224 to collide the projection 233 that cooperates usefulness.Thereby flexibly being out of shape to avoid protruding thing 233, principal arm sheet 233 provides the cooperation resistance of terminal box.Along with carrying out of cooperating, cooperate resistance to increase suddenly, and when reaching correct cooperation position, cooperate resistance to suddenly disappear.So just providing a kind of cooperates closely.In addition, when terminal box 210 and 230 reached latched position by this kind mode, public access line end lock 232 was inserted in female terminals folder 212 fully, and has set up correct cooperation connecting state (seeing Figure 23).

When terminal box 210 and 230 will be untied, as shown in figure 24, refer to or thumb is pressed the pressure arm 221 of arm 220 that then the principal arm sheet 223 of arm 220 flexibly be out of shape with one, so that it constitutes the front end that cooperates boots 224, be axis and upwards lifting to support enough 218.Based on this reason, the front end of hammerlock 220 only is raised up to the scope of projection 233 height, and the cooperation of 233 of cooperation boots 224 and projections is unclamped.If be pulled outwardly female terminal box 210 this moment from public terminal box 210, then female terminal box 210 can be extracted from binding shell 231 inside of terminal box 230.

According to this mode among the 3rd embodiment, when two terminal boxes 210 and 230 were combined together, the cooperation boots 224 of hammerlock 220 contacted with the projection 233 that cooperates usefulness, when 223 lateral deformations of principal arm sheet when dodging projection 233, produce and cooperate resistance.What produce like this is a kind of closely cooperating.Therefore, closely cooperating of a kind of brute force needs only and principal arm sheet 233 widened the just corresponding increase of its intensity in the Width size if desired.So, can reach powerful cooperates.

With the exception of this, in the case, owing to cooperate boots 224 to extend laterally from principal arm sheet 223, if the Width size of each principal arm sheet 223 is amplified, then cooperate the projected length of boots 224 to increase, the result makes hammerlock 220 strengthen in the size of Width thereupon.Therefore, this is that worry terminal box size becomes big reason.Yet, in the present invention, also should take this point into account: in each principal arm sheet 223, be provided with into the eaves shape and extend the wing sheet 225 that cooperates boots 224 front ends.Therefore, guarantee unlikely reaching outside the projection size that cooperates boots 224 with width dimensions, the intensity of principal arm sheet 223 is wing sheet 225 and increasing by this.Final owing to cooperate the projection of boots 224 can not exceed outside the wing sheet 225, it is compact that hammerlock 220 becomes as a whole, helps terminal box miniaturization as a whole.

When bolt-lock is untied, unclamp owing to make hammerlock 220 have a distortion to make to cooperate by hammerlock 220 front end liftings in vertical direction, 220 need of hammerlock are out of shape just much of that in the bump height scope that cooperation is used.Consequently: even lean against the tightness that the way of Width increase principal arm sheet 223 intensity strengthens cooperation, hammerlock 220 elasticity in vertical direction is unaffected.End product: surely make the unlikely change of unlocking operation poor.

Moreover, especially in the 3rd embodiment, owing to adopted such profile: have in the central authorities of hammerlock 220 and to split groove 222, and with projection 233 embeddings wherein, so the power that is produced when principal arm sheet 223 elastic side are out of shape splits groove 222 separated two principal arm sheets 223 by quilt and wing sheet 225 causes jointly.The result is: the power that each single-piece caused has reduced, and simultaneously, has also just reduced in the restriction aspect profile and the thickness.This helps increasing the degree of freedom of design.In addition, owing to cooperate the projection 233 of usefulness to have to make it and the central contacted profile of hammerlock 220, the balance of left-hand and dextrad is fine, and the operability of this terminal box cooperation has been improved.

Also have, in the present invention,, cooperate the projection 223 of usefulness just can make simple square owing to make oblique spigot surface 226 at the front end of hammerlock 220.The molding that this means public terminal box 231 becomes simple.Correspondingly, adopting the galss fiber reinforced resin plastics can cause under the occasion of molding change groove, be with public terminal box 230 homogenizing, above-mentioned simple profile is in the case just of great use.

The present invention is not limited to some embodiment under the above-mentioned accompanying drawing help.For example, possibility described below also is in the technical scope of the present invention.In addition, the present invention can be with making embodiment and do not depart from its scope with following described different mode.

(1) in first embodiment, though in two sides of central block 33 an anti-projection 34 that collides is arranged respectively, the present invention is not limited thereto plants layout, but the sort of embodiment shown in the image pattern 10 is also arranged.

(2) in first embodiment, though hammerlock 20 is positioned on the end face of end plug-in unit 13 of female terminal box 10, the present invention is not limited thereto plants arrangement.If the end plug-in unit 13 of female terminal box 10 is arranged at the place of case institute clad, in the case, such arrangement might as well be done in ground of equal value: with hammerlock from case by the supporting member setting that suspends downwards.

(3) though in the 3rd embodiment oblique spigot surface 226 be made in the front end of hammerlock 220 as shown in figure 29, also can do of equal value the arrangement: oblique spigot surface 226 be made in cooperate usefulness projection 233 on that end face of hammerlock.

(4) in addition, though be not presented on the figure, in the third embodiment of the present invention, also nonessential having left split groove in hammerlock.Make the arm sheet of resilient movement and can quantitatively only make one in ground of equal value, length is identical with profile.Arm can be displaced sideways with respect to block, the block that the cooperation boots of hammerlock can be crossed over cooperate usefulness so that untie this cooperation.

Claims (21)

1, a kind of terminal box assembly, include a female terminal box and for inserting the public terminal box of this female terminal box, wherein public or female terminal box the two one of have a bolt-lock arm and in the two another of public or female terminal box has block that a bolt-lock uses so as with the interlock mutually of bolt-lock arm, bolt-lock arm and bolt-lock link stopper have the tight power of a bolt, with the bolt-lock block mutually the bolt-lock arm of interlock public terminal box removably is hinged with in female terminal box, this also is included in insertion drag devices in public affairs and the female terminal box to assembly, in use, inserting drag devices only works to increase the tight power of above-mentioned bolt in direction of insertion.

2, according to a kind of assembly of claim 1, wherein, above-mentioned insertion drag devices be included in above-mentioned terminal box the two one of on an elasticity insert arm and at the embedding block of above-mentioned another terminal box.

3, according to a kind of assembly of claim 2, wherein, above-mentioned insertion arm with embed block mutually during interlock, insert the arm strain, cause public terminal box by this and be inserted into mother and connect resistance when going in the box.

4, according to a kind of assembly of claim 2 or 3, it comprises two and inserts arm and the tight arm of bolt, and both arms are positioned at each side of single armed.

5, according to a kind of assembly of arbitrary in the claim 2 to 4, wherein, above-mentioned insertion arm is bigger than the rigidity of the tight arm of above-mentioned bolt.

6, according to a kind of assembly of claim 5, wherein, above-mentioned insertion arm is shorter than the tight arm of above-mentioned bolt.

7, according to a kind of assembly of claim 6, wherein, above-mentioned insertion arm and the tight arm of above-mentioned bolt are installed on the terminal box by corresponding foot separately.

8, according to a kind of assembly of claim 7, wherein, above-mentioned insertion arm and the tight arm of above-mentioned bolt are installed on the same terminal box.

9, a kind of assembly according to Claim 8, wherein, the foot of the tight arm of above-mentioned bolt and the foot of above-mentioned insertion arm are adjoining.

10, according to a kind of assembly of claim 9, wherein, above-mentioned insertion arm and the tight arm of above-mentioned bolt have public foot.

11, according to a kind of assembly of claim 10, wherein, above-mentioned insertion arm constitutes the part of the tight arm of above-mentioned bolt.

12, according to a kind of assembly of arbitrary in the claim 7 to 11, wherein, the tight arm of bolt stretches out in a side of relevant foot, foot plays a part fulcrum, one end of the tight arm of bolt is used for and the tight block interlock of bolt, the other end has a contact-making surface, and when exerting pressure thereon, the tight arm of bolt is sufficient and crooked to decontrol the tight block of bolt around fulcrum.

13, according to a kind of assembly of claim 2 or 3, wherein, inserting arm is exactly the tight arm of bolt.

14, according to a kind of assembly of claim 13, wherein, the tight arm of bolt is contained on the foot.

15, according to a kind of assembly of claim 14, wherein, the tight arm of bolt stretches out in a side of foot, foot plays point action, the other end of the tight arm of bolt is used for and the tight block interlock of bolt, the other end has a contact-making surface, when exerting pressure thereon, the tight arm of bolt around fulcrum foot and flexural deformation to decontrol the tight block of bolt.

16, according to a kind of assembly of claim 14 or 15, wherein: the tight arm of bolt include the tight face of a bolt for the tight projection of bolt mutually interlock use; With an inserting surface for and insert the projection usefulness that leans.

17, according to a kind of assembly of claim 16, wherein, above-mentioned inserting surface is than the more close foot of the tight face of bolt.

18, according to a kind of assembly of claim 16 or 17, wherein, it comprises two inserting surfaces, and inserting surface is positioned at each side of the tight face of bolt.

19, according to a kind of assembly of arbitrary of claim 13 to 16, wherein, arrange the tight arm of bolt on the direction of insertion of terminal box, carry out elastic bending deflection on first plane, and at second plane deformation in order to decomposing two terminal boxes, the tight arm of bolt big in ratio of rigidity second plane on first plane.

20, according to a kind of assembly of claim 19, wherein, first and second plane is orthogonal.

21, according to a kind of assembly of claim 19 or 20, wherein: the tight arm tool of bolt fork-shaped end, when terminal box was inserted, this fork-shaped end can and be separated in the distortion of first plane inner bending.

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