CN105576423A - Connector - Google Patents

Abstract

The invention discloses a connector, and the connector prevents the engagement of a wire. The connector is provided with a first housing (10); a locking arm (18) which is formed on the first housing (10) and can achieve elastic deflection in a mode of entering a deflection space (23) between the external surfaces of the first housing (10); a second housing (30) which can be embedded into the first housing (10); a locking part (33) which is formed in the second housing (30) and locks the first and second housings (10, 30) to be in an embedded manner through the clamping of the locking arm (18); a housing side recessed part (24) which enables an external surface, opposite to the locking arm (18), of the first housing (10) to be locally recessed; and an arm side recessed part (25) which enables at least a region, which is not corresponding to the housing side recessed part (24), of the surface opposite to the first housing (10) of the locking arm (18) to be recessed.

Description

Connector

Technical field

The present invention relates to connector.

Background technology

Patent Document 1 discloses following connector: in the process that positive housing is chimeric with cloudy housing, the sticking department generation elastic deflection that positive housing is formed, if two housings is correctly fitted together to, then sticking department elastic reset and engaging in the lock opening of cloudy housing, by this locking effect, two housings is locked as chimerism.

[at first technical literature]

[patent documentation]

[patent documentation 1] Japanese Unexamined Patent Publication 9-330769 publication

[inventing the problem that will solve]

In above-mentioned connector, the face south outer surface of housing of sticking department exposes and is formed, and vacates the deflection space for making sticking department elastic deflection between the outer surface and sticking department of positive housing.Therefore, being installed in the deflection space between the outer surface of the engaging-in positive housing of electric wire of other connector and sticking department, when pulling this electric wire, sticking department may acting on excessive stress.Engaging-in in order to avoid electric wire, as long as constriction deflection space, but like this, fully cannot guarantee the flexure surplus of sticking department, and the locking surplus of sticking department and lock opening reduces, and can reduce the reliability of lock function.

Summary of the invention

The present invention is based on situation as described above and complete, its object is to prevent the engaging-in of electric wire.

[for solving the scheme of problem]

The feature of connector of the present invention is to possess:

First housing;

Lock arm, is formed at described first housing, can to enter the mode elastic deflection in the deflection space guaranteed between the outer surface of described first housing;

Second housing, can be chimeric with described first housing;

Sticking department, is formed at described second housing, by locking with described lock arm and be chimerism by described first housing and described second case lock;

Case side recess, the form that the opposite face relative with described lock arm for the outer surface making described first housing caves in locally; And

Arm side recess, for make in the opposite face relative with described first housing of described lock arm at least with the form of the area depression of described case side recess non-corresponding.

[invention effect]

The shape that deflection space between the outer surface of the first housing and lock arm bends in labyrinth-like by defining case side recess and arm side recess.Therefore, in order to prevent the engaging-in of electric wire, even if the interval not forming the region of arm side recess in the opposite face of the region not forming case side recess in the opposite face of constriction case side and lock arm side, the flexure surplus of lock arm also fully can be guaranteed.

Accompanying drawing explanation

Fig. 1 is the end view of the first housing of the connector forming embodiment 1.

Fig. 2 represents that the first housing and the second case lock are the sectional view of the situation of chimerism.

Fig. 3 is the X-X line cutaway view of Fig. 2.

Fig. 4 is the sectional view of the detach procedure representing the first housing and the second housing.

Fig. 5 is the Y-Y line cutaway view of Fig. 4.

[label declaration]

10 ... first housing

14 ... die cavity

15 ... stepped recess

17 ... case side opposite face (opposite face)

18 ... lock arm

19 ... arm side opposite face (opposite face)

22 ... operating portion

23 ... deflection space

24 ... case side recess

25 ... arm side recess

26 ... case side protuberance

28 ... wall portion

30 ... second housing

33 ... sticking department

Embodiment

(1) connector of the present invention also can be,

Described first housing on the chimeric direction chimeric with described second housing, observe described first housing time front shape be circular,

Multiple die cavity is formed in the inside of described first housing in the mode arranged in general square shape region,

At the outer surface of the described first housing stepped recess that to be formed with the difference of the shape of the forming region of the front shape of described first housing and described multiple die cavity be cause,

Described lock arm and described deflection space are configured at described stepped recess,

On the described opposite face relative with described lock arm of described first housing, the case side protuberance dividing case side recess described in a pair is formed in the mode outstanding to described lock arm side at Width central portion,

Described arm side recess is configured at Width central portion in the mode corresponding with described case side protuberance.

According to this structure, the front shape being conceived to the first housing is circular and the difference of the forming region of the multiple die cavity shape that to be general square shape such, by case side protuberance and arm side recess arrangement at Width central portion.Stepped recess with bottom surface be benchmark become maximum with the difference in size of the peripheral shape of the circular of the first housing at Width central portion.Therefore, it is possible to fully guarantee greatly the height dimension of case side protuberance and the depth dimensions of arm side recess.

(2) connector of the present invention also can be,

A pair wall portion configured in the mode clipping described deflection space from both sides is formed at described first housing.

According to this structure, wall portion can be utilized to prevent foreign matter to the intrusion of deflection space.

(3) connector of the present invention is based on (2), also can be,

Be formed making described lock arm be carried out the operating portion of pressing operation from when removing with described sticking department locking at described lock arm,

Described wall portion is the form making the region corresponding with described operating portion lower than other region.

According to this structure, when carrying out pressing operation to operating portion, the finger of operator becomes and is difficult to interfere with wall portion, and therefore the workability of latch-release is good.

(4) connector of the present invention also can be,

The die cavity of the rear end face opening to described first housing is formed in the inside of described first housing,

The case side protuberance dividing 2 adjacent described case side recesses is formed at the opposite face relative with described lock arm of described first housing,

The forming region of described case side protuberance is set to the scope of the rearward end arriving described first housing.

According to this structure, though divide die cavity and the outer wall of case side recess thickness, to be connected with this outer wall and the thickness in next door that divided each other by die cavity is thin, also by case side protuberance, outer wall or next door can be strengthened.

< embodiment 1>

Below, with reference to Fig. 1 ~ Fig. 5, the embodiment 1 after the present invention being specialized is described.The connection device of the present embodiment 1 is for plastic first housing 10 and plastic second housing 30.Two housings 10,30 by the lock arm 18 that is integrally formed at the first housing 10 and the locking effect of sticking department 33 being integrally formed at the second housing 30, and is locked into correct chimerism.

First housing 10 is integrally formed with the terminal accommodating portion 11 formed to rear end from its front end (end in the left side Fig. 1,2,4) and the tubular fitting portion 12 surrounded the front-end side region in terminal accommodating portion 11.The front-end side region of the formation tubular fitting portion 12 in the first housing 10 is overall in the substantial cylindrical making axis towards fore-and-aft direction (left and right directions in Fig. 1,2,4).The axis of this fore-and-aft direction is parallel with the chimeric direction of two housings 10,30.Therefore, as shown in Fig. 3,5, the first housing 10 observe the first housing 10 from the direction parallel with the chimeric direction of two housings 10,30 time front shape be circular.The rearward end of tubular fitting portion 12 is connected with the outer surface in terminal accommodating portion 11 and is supported.Further, the space between the front-end side region of the periphery in terminal accommodating portion 11 and tubular fitting portion 12 becomes the embedded space 13 for making the guard section 32 of the second housing 30 described later embed.

4 die cavities 14 of the rear end face opening to the first housing 10 are formed in the inside of the first housing 10 (terminal accommodating portion 11).The indoor insertion female end subassembly (diagram is omitted) from the rear (right Fig. 1,2,4) of the first housing 10 to 3 in 4 die cavities 14.As shown in Fig. 3,5,4 die cavities 14 are arranged in length and breadth on above-below direction and left and right directions (that is, with the two-dimensional directional that the chimeric direction of two housings 10,30 is orthogonal).Therefore, the forming region of 4 die cavities 14 is general square shape, be the circular of the front shape as the first housing 10 scope in.

Due to the difference of the shape of the forming region of the front shape of this first housing 10 (tubular fitting portion 12) and the general square shape of 4 die cavities 14 (terminal accommodating portion 11), as shown in Figure 2, at outer surface (upper surface) the upper formation stepped recess 15 of the first housing 10 (terminal accommodating portion 11).The forming region of the stepped recess 15 on fore-and-aft direction is throughout (that is, the roughly whole region of the first housing 10) on a large scale except leading section of the first housing 10.The notch 16 for making the front-end side region of stepped recess 15 externally open wide is formed at tubular fitting portion 12.The region of the formation stepped recess 15 in the upper surface (outer surface) of the first housing 10 becomes the case side opposite face 17 relative with lock arm 18.

The lock arm 18 of the form slenderly extended along the longitudinal direction is configured with at this stepped recess 15.The face relative with the first housing 10 (case side opposite face 17) of lock arm 18 becomes arm side opposite face 19.Be formed with leg 20 in the substantially central portion of the length direction of arm side opposite face 19, lock arm 18 is supported on case side opposite face 17 via leg 20.Lock arm 18 with leg 20 for fulcrum and can in seesaw shape ground elastic deflection.As shown in Figure 2,3, when the free state of the non-elastic deflection of lock arm 18, arm side opposite face 19 is almost parallel and relative with case side opposite face 17.

Locking projection 21 is formed at the leading section of arm side opposite face 19.The rearward end of lock arm 18 become make lock arm 18 to during the elastic deflection of latch-release direction for carrying out the operating portion 22 of pressing operation for operator.The rear end of lock arm 18 (operating portion 22) is positioned at the position on the front, rear end than the first housing 10 (case side opposite face 17).

Second housing 30 be integrally formed with terminal retention portion 31 and from the leading section outer peripheral edges of terminal retention portion 31 forwards the right of 4 (Fig. 2) in roughly cylindric guard section 32 of extending.Multiple male accessory (diagram is omitted) is maintained at terminal retention portion 31.In guard section 32, the thin slice (diagram is omitted) of the front end of male accessory is accommodated with the configuration relative with female end subassembly.The sticking department 33 of overshooting shape is formed at the upper surface of guard section 32.

In the process making the first housing 10 chimeric with the second housing 30, guard section 32 enters in embedded space 13, locking projection 21 and sticking department 33 are interfered, thus lock arm 18 with make its leading section from case side opposite face 17 away from mode elastic deflection and become latch-release posture.Now, the ratio leg 20 in the space between case side opposite face 17 and arm side opposite face 19 rearward and play a role as the deflection space 23 for allowing lock arm 18 to carry out the situation of elastic deflection to latch-release posture than the region on the front, rear end of lock arm 18.Further, when two housings 10,30 reaches correct chimerism, lock arm 18 carries out elastic reset, and locking projection 21 is locking with sticking department 33.By this locking effect, two housings 10,30 is locked as chimerism, limits disengaging.

And, when making the two housings 10,30 of chimerism depart from, carry out pressing operation from the operating portion 22 of opposition side to lock arm 18 of arm side opposite face 19.So, lock arm 18 elastic deflection and to the displacement of latch-release posture, therefore locking projection 21 is from sticking department 33 dissociation.Locking by under the state removed like this at locking projection 21 and sticking department 33, if be pulled away from by two housings 10,30, then can make two housings 10,30 depart from.

In the connector of the present embodiment, lock arm 18 exposes formation to the outer surface of the first housing 10, vacates the deflection space 23 for making lock arm 18 elastic deflection between the outer surface and lock arm 18 of the first housing 10.Therefore, being installed on the electric wire of other connector etc. (diagram is omitted) may in this deflection space 23 engaging-in.If pull the engaging-in electric wire etc. to deflection space 23, then utilize common lock out action and latch-release action that lock arm 18 is out of shape to the side that the direction (latch-release direction) with elastic deflection is contrary.And if the external force be subject to from electric wire etc. is strong, then excessive effect of stress is in lock arm 18.

Engaging-in in order to avoid electric wire etc. to deflection space 23, as long as the size (that is, the relative spacing of case side opposite face 17 and arm side opposite face 19) reducing the deflection space 23 on the flexure direction of lock arm 18.But, when constriction deflection space 23, fully cannot guarantee the flexure surplus of lock arm 18, and lock arm 18 reduces with the locking surplus of sticking department 33, thus reduce the reliability of lock function.

As its countermeasure, in the connector of the present embodiment, the case side opposite face 17 of the first housing 10 forms symmetrical pair of shells side recess 24, and be formed with arm side recess 25 on the arm side opposite face 19 of lock arm 18.As shown in Figure 5, pair of shells side recess 24 is forms that case side opposite face 17 is caved in.The forming region of the case side recess 24 on fore-and-aft direction be in case side opposite face 17 than tubular fitting portion 12 region rearward.That is, case side recess 24 is formed from the rear end of tubular fitting portion 12 continuously to the first housing 10 (rear end of case side opposite face 17).Pair of shells side recess 24 is to configure in the mode of the upper arrangement spaced apart of Width (direction intersected with the chimeric direction of two housings 10,30 and this two direction, elastic deflection direction of lock arm 18).

And the region between the pair of shells side recess 24 in case side opposite face 17 becomes towards the lock arm 18 side rib shape ground form of giving prominence to.The region of giving prominence to this ribbed becomes the case side protuberance 26 dividing pair of shells side recess 24.The forming range of the case side protuberance 26 on fore-and-aft direction is identical with case side recess 24.That is, case side protuberance 26 be rear end from the rear end of tubular fitting portion 12 to the first housing 10 (case side opposite face 17) along the longitudinal direction continuously and the form slenderly extended.

The forming region of the case side protuberance 26 on Width is Width middle positions of case side opposite face 17 (terminal accommodating portion 11).2 die cavities 14 and the stepped recess 15 of the upside in 4 die cavities 14 be arranged up and down are divided by outer wall 14A, but case side protuberance 26 becomes from the outstanding form of this outer wall 14A.And the die cavity 14 on the right side in 4 die cavities 14 is divided by next door 14B with the die cavity 14 in left side, but case side protuberance 26 configures in mode corresponding with this next door 14B in the direction of the width.

Arm side recess 25 is forms that arm side opposite face 19 is caved in the form of slotly, is the form slenderly extended along the longitudinal direction.The forming range of the arm side recess 25 on Width is regions corresponding with the region (that is, the region along case side protuberance 26 in case side recess 24) of the whole width regions of case side protuberance 26 and the left and right sides of case side protuberance 26.The forming region of the arm side recess 25 on fore-and-aft direction is scopes defined of the rearward end of lock arm 18.That is, when lock arm 18 becomes latch-release posture, the scope that can interfere with case side protuberance 26 is stayed.

And lock arm 18 is under latch-release posture, and arm side opposite face 19 tilts relative to the upper surface of case side protuberance 26, therefore the darkest, more shallow in the rear end of lock arm 18 with the degree of depth of the arm side opposite face 19 arm side recess 25 that is benchmark.Set by this shape, when the elastic deflection amount of lock arm 18 becomes maximum, the upper surface of arm side recess 25 carries out face with the upper surface of case side protuberance 26 and contacts.

The region not forming arm side recess 25 in arm side opposite face 19 becomes the symmetrical a pair arm side protuberance 27 corresponding with pair of shells side recess 24.This arm side protuberance 27 is configured in the region with case side protuberance 26 non-corresponding.The width dimensions of each arm side protuberance 27 is set as the size fully larger than the width dimensions of arm side recess 25.When carrying out injection molded to the first housing 10 comprising arm, the setting of this width dimensions well and is preferably carried out in the flowing in order to the molten resin making the lock arm 18 comparing thin-walled.

And, symmetrical a pair wall portion 28 erected from the upper surface of case side recess 24 is formed at the upper surface of the first housing 10.A pair wall portion 28 is configured at the left and right sides edge of case side opposite face 17, arranges in the mode clipping lock arm 18 and deflection space 23 from the left and right sides.The forming region of the wall portion 28 on fore-and-aft direction is the scopes from the rear end of tubular fitting portion 12 to the position corresponding with the rear end of lock arm 18.And the rearward end corresponding with operating portion 22 in wall portion 28, tilts the height of the upper surface of this case side recess 24 as benchmark in the mode reduced gradually towards rear.

Next, the effect of the present embodiment is described.As shown in Figure 2,3, when lock arm 18 is in the free state of non-elastic deflection, the interval of the above-below direction (the elastic deflection direction of lock arm 18) between the upper surface of case side protuberance 26 and the lower surface of arm side protuberance 27 is than supposing to the little size of the foreign matters such as the engaging-in electric wire of deflection space 23.Further, this case side protuberance 26 is little with the elastic deflection amount of the lock arm 18 between the upper and lower in the chimeric process than normal two housings 10,30 of arm side protuberance 27.

But, be formed with the case side recess 24 corresponding with arm side protuberance 27 at case side opposite face 17, be formed with the arm side recess 25 corresponding with case side protuberance 26 at arm side opposite face 19.And, when lock arm 18 is free state, relative spacing up and down, the case side recess 24 of case side protuberance 26 and arm side protuberance 27 all set larger than the elastic deflection amount of the lock arm 18 in the chimeric process of normal two housings 10,30 with the relative spacing up and down of arm side protuberance 27.Therefore, when in the chimeric process of two housings 10,30, elastic deflection occurs lock arm 18, case side opposite face 17 and arm side opposite face 19 can not be interfered, and the elastic deflection of lock arm 18 is carried out without barrier.

The connector of the present embodiment have the first housing 10 and can be chimeric with the first housing 10 the second housing 30.Be formed with lock arm 18 at the first housing 10, this lock arm 18 can to enter the mode elastic deflection in the deflection space 23 guaranteed between itself and the outer surface of the first housing 10.Be formed with sticking department 33 at the second housing 30, this sticking department 33 is locked by and the chimerism carrying out two housings 10,30 locking with lock arm 18.Further, the opposite face (case side opposite face 17) relative with lock arm 18 of the outer surface of the first housing 10 is formed with the case side recess 24 of the form that its part is caved in locally.On the other hand, the opposite face (arm side opposite face 19) relative with the first housing 10 of lock arm 18 is formed make its at least with the arm side recess 25 of the form of the area depression of case side recess 24 non-corresponding.

According to this structure, the deflection space 23 between the outer surface of the first housing 10 and lock arm 18 is by defining case side recess 24 and arm side recess 25 and in the shape bending to labyrinth-like.Therefore, in order to prevent the engaging-in of electric wire etc., even if the interval in the region (arm side protuberance 27) not forming arm side recess 25 in the region (case side protuberance 26) not forming case side recess 24 in constriction case side opposite face 17 and lock arm 18 side opposite face, also fully can guarantee the flexure surplus of lock arm 18.

And, the first housing 10 on the chimeric direction chimeric with the second housing 30, observe the first housing 10 time front shape be circular, multiple die cavity 14 is formed at the inside of the first housing 10 in the mode arranged in general square shape region.Further, at the outer surface of the first housing 10 stepped recess 15 that to be formed with the difference of the shape of the forming region of the front shape of the first housing 10 and multiple die cavity 14 be cause, lock arm 18 and deflection space 23 is configured with at this stepped recess 15.In addition, on the opposite face (case side opposite face 17) relative with lock arm 18 of the first housing 10, the case side protuberance 26 dividing pair of shells side recess 24 is formed in the mode outstanding to lock arm 18 side at Width central portion, and arm side recess 25 is configured in Width central portion in the mode corresponding with case side protuberance 26.

That is, in the present embodiment, the front shape being conceived to the first housing 10 is circular and the difference of the forming region of multiple die cavity 14 shape that to be general square shape such, and case side protuberance 26 and arm side recess 25 are configured in Width central portion.Stepped recess 15 maximum at Width central portion place with the difference in size of the peripheral shape of the circular of the first housing 10 being benchmark with upper surface (bottom surface).Therefore, it is possible to fully guarantee greatly the height dimension of case side protuberance 26 and the depth dimensions of arm side recess 25.

And, be formed with a pair wall portion 28 configured in the mode clipping deflection space 23 from both sides at the first housing 10, therefore, it is possible to utilize wall portion 28 to prevent foreign matter to the intrusion of deflection space 23.And be conceived to be formed at lock arm 18 make lock arm 18 be carried out the situation of the operating portion 22 of pressing operation from when removing with sticking department 33 locking middle, wall portion 28 becomes the region corresponding with operating portion 22 form lower than other region.Thus, when carrying out pressing operation to operating portion 22, the finger of operator is difficult to interfere with wall portion 28, and therefore the workability of latch-release is good.

And, the die cavity 14 of the rear end face opening to the first housing 10 is formed in the inside of the first housing 10.And, be formed with at the opposite face (case side opposite face 17) relative with lock arm 18 of the first housing 10 the case side protuberance 26 divided adjacent 2 case side recesses 24, the forming region of this case side protuberance 26 is set to the scope of the rearward end of arrival first housing 10.According to this structure, divide the thickness of die cavity 14 and the outer wall 14A of case side recess 24, to be connected with this outer wall 14A and the thickness of next door 14B that divided each other by die cavity 14 is thin, case side protuberance 26 couples of outer wall 14A or next door 14B also can be utilized to strengthen.

Other embodiment > of <

The present invention is not defined through the embodiment of above-mentioned description and accompanying drawing explanation, and such as the following examples are also contained in technical scope of the present invention.

(1) in the above-described embodiments, the width dimensions of arm side recess is greater than the width dimensions of case side protuberance, but the width dimensions of the width dimensions of case side protuberance and arm side recess also can be made to be in approximate same size.Like this, in the process of lock arm elastic deflection, by the sliding contact of case side protuberance and arm side recess, guiding function can be played.

(2) in the above-described embodiments, the first housing is formed a pair wall portion clipping deflection space from both sides, but also can be set to the form not forming such wall portion.

(3) in the above-described embodiments, wall portion is the region corresponding with the operating portion form lower than other region, but wall portion can be also certain height in whole region.

(4) in the above-described embodiments, the forming region of case side protuberance arrives the rearward end of the first housing, but the forming region of case side protuberance also can be than the position on the front, rear end of the first housing or the position on the front, rear end than lock arm.

(5) in the above-described embodiments, being set to lock arm is the seesaw shape ground form of flexure of fascinating, but lock arm also can be in the form of extending in cantilever manner or the both arms beam form of the outer surface being supported at both ends in the first housing to the rear on chimeric direction.

(6) in the above-described embodiments, define 2 case side recesses, but the number of housing recess also can be 1, can also be more than 3.

(7) in the above-described embodiments, define 1 arm side recess, but the number of arm side recess also can be multiple.

(8) in the above-described embodiments, the front shape that the chimeric direction chimeric with the second housing is observed of the first housing is circular, but the front shape of the first housing also can be general square shape.

Claims (5)

1. a connector, is characterized in that, possesses:

First housing;

Lock arm, is formed at described first housing, can to enter the mode elastic deflection in the deflection space guaranteed between the outer surface of described first housing;

Second housing, can be chimeric with described first housing;

Sticking department, is formed at described second housing, by locking with described lock arm and be chimerism by described first housing and described second case lock;

Case side recess, the form that the opposite face relative with described lock arm for the outer surface making described first housing caves in locally; And

Arm side recess, for make in the opposite face relative with described first housing of described lock arm at least with the form of the area depression of described case side recess non-corresponding.

2. connector according to claim 1, is characterized in that,

Described first housing on the chimeric direction chimeric with described second housing, observe described first housing time front shape be circular,

Multiple die cavity is formed in the inside of described first housing in the mode arranged in general square shape region,

At the outer surface of the described first housing stepped recess that to be formed with the difference of the shape of the forming region of the front shape of described first housing and described multiple die cavity be cause,

Described lock arm and described deflection space are configured at described stepped recess,

On the described opposite face relative with described lock arm of described first housing, the case side protuberance dividing case side recess described in a pair is formed in the mode outstanding to described lock arm side at Width central portion,

Described arm side recess is configured at Width central portion in the mode corresponding with described case side protuberance.

3., according to connector according to claim 1 or claim 2, it is characterized in that,

Be formed with a pair wall portion at described first housing, described a pair wall portion configures in the mode clipping described deflection space from both sides.

4. connector according to claim 3, is characterized in that,

Be formed with operating portion at described lock arm, described operating portion is carried out pressing operation from when removing with described sticking department locking making described lock arm,

Described wall portion is the form making the region corresponding with described operating portion lower than other region.

5. the connector according to any one of claim 1 ~ claim 4, is characterized in that,

The die cavity of the rear end face opening to described first housing is formed in the inside of described first housing,

The case side protuberance dividing 2 adjacent described case side recesses is formed at the opposite face relative with described lock arm of described first housing,

The forming region of described case side protuberance is set to the scope of the rearward end arriving described first housing.