JP2006196214A - Molding method of connector housing, and connector housing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent enlargement of the resin parts by preventing damages or the like of a locking lance of resin parts in die extraction and highly maintaining a locking force of a locking lance. <P>SOLUTION: A core member 2 installed at one molding die is composed of a first core 3 and a second core 4 capable of relatively progressing and retreating along the first core, and a groove part 8 for molding the locking lance is integrally installed at the first core and the second core in a state that the first core and the second core are coordinated in parallel. A resin material is filled between a molding die 1 at one side and the other molding die 21, and the flexible locking lance 9 is formed by the groove part by using a connector housing molding die on which a slanted face 16 is formed at the end part of of the groove part 8a of the a second core 4 in a direction reversed to a mold drawing direction. Both molding dies are opened after solidification of the resin material, and by moving the second core 4 in the die extracting direction on one molding die side, the locking lance is made to be bent and demolded from the groove part 8, and the connector housing is made to be removed from the one molding die in that state. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a connector housing molding method and a connector housing that can be molded with resin without forcibly removing a locking lance for locking a terminal.

  FIG. 12 shows one form of a conventional method for molding a resin part (see Patent Document 1).

  The resin component 59 is molded by a molding die 51. The molding die 51 includes a lower fixed mold 52, an upper movable mold (not shown), and a movable core provided in the fixed mold 52 so as to be movable back and forth. 53 and a projecting pin 54. On the left and right sides of the movable core 53, the fixed mold 52 is provided with a recess 55 for forming a locking lance, and the movable core 53 is provided with a recess 58 for forming a projection 57 of the locking lance 56.

  A resin material is injected between the fixed mold 52 and the movable mold, the movable mold is raised as shown in FIG. 12, and the movable core 53 is raised integrally with the protruding pin 54, so that the housing 59 is fixed. When the protruding pin 54 is further lifted from the state shown in FIG. 12 by being extracted from the mold 52, the locking lance 56 is bent outward, and the protrusion 57 of the locking lance 56 is extracted from the recess 58 of the movable core 53. It is put out (it is forcibly removed).

  FIG. 13 shows one form of a connector housing as a resin part molded by a mold (see Patent Document 2).

  The connector housing 61 has terminal receiving chambers 63 in two upper and lower stages, and a flexible locking lance 62 is integrally formed on the upper wall of each terminal receiving chamber 63. The locking lance 62 has a front end. There is a slightly inclined locking surface 62a, and a die cutting hole 64 is provided in a wall portion (front wall) 65 on the connector fitting surface side facing the front of the locking surface 62a. The mating terminal insertion hole 67 is continuously provided on the side.

A female terminal 66 with an electric wire is inserted into the terminal accommodating chamber 63 from the rear opening, and a protrusion 68 on the upper front end of the female terminal 66 is locked by a locking lance 62. The protrusion 68 is provided on a rectangular cylindrical electric contact portion 69, and the electric contact portion 69 has an elastic contact piece 70 on the inner side. The connector housing 61 has a spacer 71 that can be moved back and forth in the vertical direction, and the female terminal 66 is double-locked by the spacer 71. Each terminal 66 and the connector housing 61 constitute a connector.
JP 2003-39508 A (page 3, FIG. 4) Japanese Patent Laying-Open No. 2004-39498 (FIG. 11)

  However, in the molding method of the resin part shown in FIG. 12 above, the locking lance 56 is deformed (the locking force is reduced accordingly) or broken because the flexible locking lance 56 is forcibly removed. In order to prevent deformation and breakage of the locking lance 56, it is necessary to form an inclined surface in the mold release direction on the rear end (the locking surface which is the undercut portion) 57a of the locking lance 56. In other words, there is a problem that the locking force (holding force) decreases because the component (not shown) is locked by the inclined surface 57a.

  Further, in the connector housing (resin component) 61 and its molding method shown in FIG. 13, the die fitting hole (opening) 64 with respect to the locking surface 62 a on the distal end side of the locking lance 62 is connected to the connector of the connector housing 61. Because of the relationship formed on the wall (front wall) 65 on the surface side, for example, the mating male terminal or the unlocking jig bar or the like enters the die punching hole 64, and the terminal 66 is unlocked unexpectedly. There is a concern that the locking lance 62 may be damaged, or that the mating terminal insertion hole 67 and the mold release hole 64 communicate with each other in the housing front wall 65 and the strength of the front wall 65 decreases. It was.

  Further, in a connector housing other than FIG. 13 (not shown), for example, when using the mating terminal insertion hole on the front wall of the housing as a die-cutting hole to form the locking surface at the tip of the locking lance, When trying to increase the locking force by increasing the width of the locking lance, the width of the connector housing including the width of the mating terminal pick-up taper surface (reference numeral 67a in FIG. 13) around the mating terminal insertion hole becomes large. In order to prevent this, the mating terminal pick-up taper surface (67a) has to be made small, resulting in a problem that the mating male terminal insertion property deteriorates.

  In view of the above points, the present invention eliminates the risk of damaging the locking lance of the connector housing at the time of die-cutting or inadvertently damaging or releasing the locking lance when using the connector housing. It is an object of the present invention to provide a connector housing molding method and a connector housing that can maintain a high locking force of a locking lance and can prevent the connector housing from being enlarged.

  In order to achieve the above object, a method for molding a connector housing according to claim 1 of the present invention comprises: one molding die for molding the connector housing; the other molding die; and a core member provided on the one molding die. And the core member is composed of a first core and a second core relatively movable along the first core, and the first core and the second core are aligned in parallel. A connector housing in which the first core and the second core are integrally provided with a groove portion for forming a locking lance, and an inclined surface is formed at the end of the groove portion of the second core in the direction opposite to the mold release. Using a molding die, a resin material is filled between the one molding die and the other molding die, a flexible locking lance is molded in the groove, and both molding dies are fixed after the resin material is solidified. Opening and moving the second core in the mold release direction on the one mold side, Scan deflecting was released from the groove portion, the connector housing in this state, characterized in that disengaging from one of the mold said.

  With the above configuration, the locking lance of the connector housing is bent while being smoothly pushed up along the inclined surface of the second core, and the connector housing is detached from the mold while the locking lance is bent. This eliminates excessive pulling and prevents damage and excessive deformation of the locking lance. Further, the locking surface of the locking lance can be formed smoothly and reliably without the need for a punching hole in the wall portion on the connector fitting surface side of the connector housing.

  A method for forming a connector housing according to claim 2 is the method for forming a connector housing according to claim 1, wherein the protruding plate portion of the other forming die is positioned along the groove portion in a state where both the forming dies are closed. The locking lance is formed between the groove and the protruding plate.

  With the above configuration, the groove portion is closed by the protruding plate portion except for the base side, and a locking lance is formed between the bottom surface of the groove portion and the protruding plate portion. When both molds are opened, the projecting plate portion is extracted, and the bending space for the locking lance and the jig rod insertion hole for unlocking are formed coaxially.

  The method for molding a connector housing according to claim 3 is the method for molding a connector housing according to claim 1 or 2, wherein the projection of the other molding die is formed at the tip of the core member in a state in which both the molding dies are closed. And a mating terminal insertion hole and a mating terminal pick-up surface are formed by the projecting portion and a taper surface on the base end side thereof.

  With the above configuration, resin molding is performed in a state where the protrusion of the other mold is in contact with the tip of the core member, and the mating terminal insertion hole of the connector housing and the mating terminal pickup taper surface are molded by the protrusion. Thus, since the mating terminal insertion hole is formed separately from the locking lance, the width of the mating terminal insertion hole and the mating terminal pick-up surface are not affected even if the locking lance is wide. The dimensions can be appropriately set regardless of the width of the stop lance.

  The method for molding a connector housing according to claim 4 is the method for molding a connector housing according to any one of claims 1 to 3, wherein a vertical surface is formed at an end of the groove portion of the first core in the direction opposite to the die removal. The locking surface of the locking lance is formed by the vertical surface.

  With the above configuration, a locking surface perpendicular to the tip of the locking lance is formed on the vertical surface of the groove end of the first core, and a high locking force for the terminal is exhibited on the locking surface of the locking lance.

  The method for forming a connector housing according to claim 5 is the method for forming a connector housing according to any one of claims 1 to 4, wherein the second core is slidably disposed between the pair of first cores. It is characterized by.

  With the above configuration, the inclined surface is formed at the center in the width direction of the locking lance, and the locking surfaces are formed on both sides in the width direction of the locking lance. The inclined surface at the center of the locking lance acts as a concave surface for bending the lance that engages and engages a jig bar for unlocking, for example.

  A connector housing according to a sixth aspect is formed by the method for forming a connector housing according to any one of the first to fifth aspects, wherein the wall portion on the connector fitting surface side faces the locking surface of the locking lance. It is characterized by having.

  With the above configuration, the mold release hole is not located in the wall portion of the connector housing on the side of the connector fitting surface facing the engagement surface of the engagement lance, and adverse effects due to the mold release hole are avoided.

  According to the first aspect of the present invention, since the locking lance is not forcibly removed, it is possible to prevent the locking lance from being damaged or the locking force from being lowered due to excessive deformation, and the terminal locking of the locking lance of the connector housing is prevented. The force is maintained high, and the reliability of locking to the terminal is improved.

  According to the second aspect of the present invention, the locking lance can be reliably formed in the groove portion by closing the groove portion with the protruding plate portion. Further, the locking lance deflection space and the locking rod insertion hole for releasing the locking can be simultaneously formed by the protruding plate portion.

  According to the third aspect of the invention, the mating terminal insertion hole is formed separately from the molding of the locking lance, so that the width of the mating terminal insertion hole and the mating terminal can be increased even if the locking lance is wide. The width of the pick-up surface can be set to an appropriate size regardless of the width of the locking lance, which eliminates the problem of narrowing the conventional mating terminal pick-up surface and enlarging the connector housing width. A compact connector housing having an appropriate mating terminal pick-up surface can be obtained.

  According to the fourth aspect of the present invention, the terminal can be reliably locked by the vertical locking surface of the locking lance, and the locking reliability is further improved.

  According to the fifth aspect of the invention, a high locking force can be exerted on the locking surfaces on both sides of the locking lance, and the locking of the terminal by the locking lance can be released on the central inclined surface. Can do.

  According to the sixth aspect of the present invention, since there is no need for a punching hole for forming the locking surface of the locking lance as in the prior art, a jig bar, a mating terminal, etc. are inadvertently inserted from the punching hole. There is no need to worry about breaking the locking lance by inserting or inadvertently releasing the locking of the terminal, thereby improving the reliability of the terminal locking. Moreover, the strength reduction of the wall portion on the connector fitting surface side caused by the punching hole is prevented.

  1 to 10 show an embodiment of a method for forming a connector housing according to the present invention. By this molding method, the connector housing 10 shown in FIG. 11 is molded.

  This connector housing 10 (FIG. 11) has a flexible locking lance 9 facing the terminal accommodating chamber 11, and the locking lance 9 has an inclined recess 24 for unlocking at the center of the front end. On the upper side of the mating terminal insertion hole 34 of the housing front wall 38, there is a jig bar insertion hole 33 for unlocking via a partition wall 42 in the width direction. The locking surface 9 a at the tip of the locking lance 9 faces the rear surface 42 a of the front partition wall 42.

  A female terminal (not shown) with an electric wire is inserted into the terminal accommodating chamber 11 from the rear opening 39, and the rear end of the electrical contact portion such as a box shape of the female terminal is a locking surface 9 a at the front end of the locking lance 9. Abutted and locked. The connector housing 10 and the terminals constitute a connector.

  As a method of molding the connector housing 10 of FIG. 11, as shown in FIGS. 1 to 2, one molding die 1 (forming a terminal housing chamber 11 or a locking lance 9 which is an inner portion of the connector housing 10 (FIG. 12)). The core member 2 of FIG. 4) is used.

  In FIG. 1, a core member 2 is positioned between a pair of left and right symmetrical fixed cores (first cores) 3 and a pair of fixed cores 3, and a movable core (retractable with respect to the fixed core 3). (Second core) 4. Each of the cores 3 and 4 has a plate-like projecting portion (represented by reference numerals 3 and 4) projecting horizontally in FIG. It consists of and. Each protrusion part 3 and 4 joins in the width direction, and comprises the one protrusion part 7 of rectangular-bar shape. The base 5 of the fixed core 3 is fixed to one mold 1 (FIG. 4), and the base 6 of the movable core 4 can be advanced and retracted independently of the mold 1.

  A groove portion 8 for forming a locking lance is formed on the horizontal upper wall surface in the longitudinal intermediate portion of the protruding portion 7 of the core member 2. The groove 8 of the fixed core 3 includes a vertical surface 12 at the front end that forms a locking surface 9a at the tip (front end) of the locking lance 9 (FIG. 12), a short horizontal surface 13 that continues perpendicular to the vertical surface 12, and a horizontal surface. 13 has a gently inclined surface 14 raised rearward from 13 and a side edge vertical surface 15 raised on both sides of the horizontal surface 13 and the inclined surface 14 perpendicular to the front vertical surface 12. .

  An inclined surface 16 (FIG. 2) of the movable core 4 is located at the center of the front end surface 12 of the groove 8. The inclined surface 16 is about 45 ° in this example, and is formed obliquely downward from the upper end surface of the movable core 4 toward the rear. The inclined surface 16 intersects a short horizontal surface 17 of the movable core 4, and the horizontal surface 17 continues to a gentle inclined surface 18 raised rearward. The horizontal surface 17 of the movable core 4 continues on the same plane as the horizontal plane 13 of the fixed core 3, and the inclined surface 18 in the latter half of the movable core 4 continues on the same surface as the inclined surface 14 of the fixed core 3. Whereas the groove front end surface 12 of the fixed core 3 is a vertical surface, the groove front end surface 16 of the movable core 4 is an inclined surface.

  As shown in FIG. 2, the movable core 4 slides backward between the left and right fixed cores 3 along the vertical inner surface 19 of both the fixed cores 3, and the inclined surface 16 at the front end of the groove portion of the movable core 4 The protruding portion 20 that continues to the front side is located in the groove portion 8 of the fixed core 3. The protruding portion 20 is formed by the groove 8 a of the movable core 4, and the upper end surface of the protruding portion 20 is located on the same plane as the upper end surface of the latter half of the movable core 4 and the upper end surface of the fixed core 3. As the movable core 4 moves backward, a gap (represented by reference numeral 19) is generated between the front ends of the pair of fixed cores 3.

  In addition, the direction of “up / down / front / left / right” and “vertical / horizontal” of the core member 2 is merely for convenience of explanation. For example, if the core member 2 is arranged vertically instead of horizontally, And “up and down” becomes “left and right”.

  3 to 10 show an embodiment of a method for molding a connector housing (resin component) using the molding die 41 according to the present invention. 3, 5, 7, and 9 are vertical cross-sectional views of the main part, and FIGS. 4, 6, 8, and 10 are overall cross-sectional views. Sequentially, FIG. 3 and FIG. 4 correspond, FIG. 5 and FIG. 6 correspond, FIG. 7 and FIG. 8 correspond, and FIG. 9 and FIG.

  3 and 4 show a state in which the mold 41 is closed and the resin material is filled.

  As shown in FIG. 3, the front end surface of the core member 2 of one mold 1 (FIG. 4) abuts the front end surface of the protrusion 22 of the other mold 21, and the front upper end surface of the core member 2 is the other mold. The locking lance 9 contacts the lower surface of the horizontal protruding plate portion 23 of the mold 21 and is molded between the lower surface of the protruding plate portion 23 and the groove portion 8 of the core member 2, and a connector is formed outside the core member 2 and the protruding plate portion 23. The wall part of the housing 10 is resin-molded. An inclined surface 24 is formed on the locking lance 9 by the inclined surface 16 of the movable core 4 at the center in the width direction of the front end. The horizontal portion 9b and the inclined portion 9c of the locking lance 9 are formed by the horizontal surface 17 (FIG. 1) of the movable core 4 and the inclined surface 18 of the latter half.

  As shown in FIG. 4, the connector housing 10 is resin-molded between one mold 1 and the other mold 21. One mold 1 has a recess 25 that molds the rear half of the connector housing 10, and the other mold 21 has a recess 26 that molds the front half of the connector housing 10. One mold 1 functions as a movable mold, and the other mold 21 functions as a fixed mold. One mold 1 can be fixed and the other mold 21 can be movable.

  The core member 2 is inserted through a rectangular hole at the center of one mold 1 so that only the movable core 4 can be moved forward and backward. The base 6 of the movable core is integrated with a rear cylindrical slide portion 35, and the slide portion 35 is driven forward and backward by an actuator (not shown) along a central shaft 36. The shaft 36 continues to the vertical movable plate 28, the movable plate 28 continues to the shaft extension 37 in the rear base 27, and at least a pair of left and right protrusion pins 29 protrudes forward from the movable plate, and the shaft extension 37 is driven forward and backward by an actuator (not shown) integrally with the movable plate 28 and the protruding pin 29.

  In FIG. 4, the tip of the protruding pin 29 is in contact with the rear end of the connector housing 10. The other mold 21 is provided with a gate 31 for resin injection (injection molding) from the rear base 30, and the gate 31 opens into the recess 26 of the mold 21.

  5 and 6 show a state where the resin material is solidified and the mold is opened.

  As shown in FIG. 5, one molding die 1 is retracted integrally with the core member 2 and the connector housing 10, and the protruding plate portion 23 of the other molding die 21 is extracted from the one molding die 1, so that a locking lance is obtained. Nine bending spaces 32 and an unlocking jig rod insertion hole 33 are formed coaxially communicating with each other. The locking lance 9 remains in the groove 8 of the core member 2.

  The lower surface of the front half of the projecting plate portion 23 is an inclined surface 23 a corresponding to the inclined portion 9 c of the latter half of the locking lance 9, and the proximal end side of the inclined portion 9 c of the latter half of the locking lance 9 is exposed upward from the groove 8. ing. Inner walls (not shown) of one mold 1 are located on the left and right sides of the front half of the projecting plate portion 23 to form the side surface of the inclined portion 9c of the locking lance 9 on the base side. It is also possible to form the locking lance 9 over the entire length with only the groove 8 without using the inner wall (not shown) of the mold 1.

  In addition, the protruding portion 22 of the other mold 21 is extracted to form a mating terminal insertion hole 34, and the peripheral edge (upper and lower left and right) of the front end opening of the insertion hole 34 with the tapered surface 22 a on the proximal end side of the protruding portion 22. ) Is formed with a tapered surface 34a for guiding the mating terminal.

  As shown in FIG. 6, one mold 1 retreats together with the core member 2 and the connector housing 10, and the front half of the connector housing 10 is extracted from the other mold 21 and exposed. Other states are the same as in FIG.

  7 and 8 show a state in which the movable core 4 at the center of the core member 2 is moved backward to bend the locking lance 9 into the bending space 32.

  As shown in FIG. 7, with the left and right fixed cores 3 left in the connector housing 10, the central movable core 4 retracts, and the front upper protrusion 20 following the groove 8 a of the movable core 4 holds the locking lance 9. Push up to bend and deform. The lower surface of the locking lance 9 is positioned substantially on the same plane as the upper end surfaces of the movable core 4 and the fixed core 3. The state of the other mold 21 is the same as in FIG.

  As shown in FIG. 8, the movable core 4 in the center moves backward, and the rear end of the slide portion 35 following the wide base 6 of the movable core 4 comes into contact with the front end of the movable plate 28 and stops. The other states are the same as in FIG.

  9 and 10 show a state in which the connector housing 10 which is a product is pushed out by the protruding pin 29. FIG.

  As shown in FIG. 9, the connector housing 10 protrudes from the core member 2 while the central movable core 4 and the fixed cores 3 on both sides maintain the axial displacement shown in FIG. 10), the front end 3a of the fixed core 3 is positioned rearward of the base end of the locking lance 9, and at the same time, the bending of the locking lance 9 is released and elastically enters the terminal accommodating chamber 11. Will return. The bending space 32 of the locking lance 9 communicates coaxially with the jig rod insertion hole 33 for releasing the locking. Other states are the same as in FIG.

  As shown in FIG. 10, the movable plate 28 on one mold 1 side advances integrally with the pair of projecting pins 29 by driving the shaft extension 37, and the tips of the projecting pins 29 are in the recesses 25 of the one mold 1. The rear end of the connector housing 10 is pressed and pushed forward from the recess 25. The connector housing 10 is collected by a lower pallet or the like and sent to the next process (for example, a terminal insertion process). Other states are the same as in FIG.

  According to the molding method of the connector housing of the above embodiment, as shown in FIG. 7 and FIG. 9, since the fixed core 3 is removed with the locking lance 9 bent, the locking lance 9 and the fixed core 3 Without any interference, smooth die cutting is performed, and the locking lance 9 is prevented from being damaged or greatly deformed, and the resulting decrease in locking force.

  Further, in the step of FIG. 3, the locking surface 9a at the front end of the locking lance 9 is formed vertically, so that the locking force of the terminal is increased, and even if the locking surface 9a is formed vertically, FIG. In this process, the locking lance 9 can be bent and released from the groove 8 of the fixed core 3 easily and smoothly, and the locking surface 9a can be reliably prevented from being damaged or deformed.

  Further, as shown in FIG. 5, since the locking lance 9 is resin-molded in the groove 8 of the core member 2, it is necessary to use the mating terminal insertion hole of the connector housing as a die-cutting hole of the other molding die as in the prior art. 11, the size of the mating terminal insertion hole 34 can be freely adjusted (can be reduced) as in the connector housing 10 of FIG. 11, and the terminal pick-up taper surface 34a on the periphery of the insertion hole 34 can be formed large. At the same time, it is possible to prevent the connector housing 10 from being enlarged in the width direction and height direction due to the formation of the terminal picking taper surface 34a.

  In the above embodiment, the inclined surface 24 at the center of the front end of the locking lance 9 is used for releasing the locking, but it is not necessarily used for releasing the locking, and an inclination for simply removing the movable core 4 smoothly. It can also be a surface 24. Further, the angle of the locking surface 9a of the locking lance 9 is not necessarily vertical, but may be slightly inclined in the same direction as the inclined surface 24. In this case, the die cutting is performed smoothly.

  Moreover, in the said embodiment, although the movable core 4 was arrange | positioned between a pair of fixed cores 3, for example, one movable core 4 and one fixed core 3 are arrange | positioned in parallel, and the front end of the latching lance 9 is arranged. It is also possible to form the locking surface 9a and the inclined surface 24 in parallel on the left and right.

  Moreover, in the said embodiment, although the solidified connector housing 10 was extruded with the protrusion pin 29, it can replace with the protrusion pin 29, for example, can also use extrusion means, such as an air blow by an air pressure and an air cylinder.

  For example, in FIG. 7, the rear end 40 of the connector housing 10 is a front end (connector fitting surface side), and the front end is closed with a front holder (not shown), so that the mating terminal insertion hole 34 of the connector housing 10 is formed. The female terminal is inserted into the female terminal insertion hole 11 through the female terminal insertion hole, and the female terminal is locked by a downward projection (not shown) of the locking lance 9. It is also possible. In this case, the protrusion of the locking lance 9 has a vertical locking surface opposite to the inclined surface in the same direction as the inclined surface 24 at the tip of the lance, and this inclined surface is lifted along the inclined surface 16 of the movable core 4. It is released smoothly while being done.

  Moreover, in the said embodiment, although the housing 10 of the connector which is a component of a wire harness was resin-molded, the connector housing 10 may be integrally formed in an electrical connection box (not shown), for example, Alternatively, for example, a housing such as a case may be formed as a resin component in addition to the connector housing, and the components other than the terminals may be locked by the locking lance.

  Moreover, in the said embodiment, filling of the resin material to both the shaping | molding dies 1 and 21 may inject | pour the molten resin material, or after filling a pellet-shaped solid resin material into both shaping | molding dies, it shape | molds. The mold may be heated to melt the resin material, or may be solidified using a thermosetting resin material instead of thermoplastic. Further, the present invention is effective not only as a connector housing molding method and a connector housing but also as a connector housing molding die.

It is a perspective view which shows the principal part of the shaping | molding die used with the shaping | molding method of the connector housing which concerns on this invention. It is a perspective view which similarly shows operation | movement of the principal part of a shaping | molding die. It is a principal part longitudinal cross-sectional view which shows the state which closed the shaping | molding die and was filled with the resin material. It is a whole cross-sectional view which shows the state which closed the shaping | molding die and was filled with the resin material. It is a principal part longitudinal cross-sectional view which shows the state which opened the shaping | molding die. It is a whole cross-sectional view which shows the state which opened the shaping | molding die. It is a principal part longitudinal cross-sectional view which shows the state which retracted the movable core. It is a whole cross-sectional view which shows the state which retracted the movable core. It is a principal part longitudinal cross-sectional view which shows the state which extruded the connector housing with the protrusion pin. It is a whole cross-sectional view which shows the state which extruded the connector housing with the protrusion pin. It is a perspective view which shows one form of the connector housing formed with the shaping | molding method of this invention. It is a longitudinal cross-sectional view which shows one form of the shaping | molding die of the conventional resin component. It is a longitudinal cross-sectional view which shows one form of the connector housing formed with the other conventional shaping | molding die.

Explanation of symbols

1 One mold 2 Core member 3 Fixed core (first core)
4 Movable core (second core)
8, 8a Groove portion 9 Locking lance 9a Locking surface 10 Connector housing 12 Vertical surface 16 Inclined surface 21 Other mold 22 Projection portion 22a Tapered surface 23 Projection plate portion 32 Deflection space 34 Partner terminal insertion hole 34a Counter terminal pickup surface

Claims (6)

One mold for molding the connector housing, the other mold, and a core member provided on the one mold, the core member being relatively relative to the first core along the first core And a groove for forming a locking lance is integrally formed with the first core and the second core in a state where the first core and the second core are aligned in parallel. Using a connector housing mold in which an inclined surface is formed at the end of the groove portion of the second core in the opposite direction from the mold release,
A resin material is filled between the one mold and the other mold, a flexible locking lance is formed in the groove, and both molds are opened after the resin material is solidified. The second core is moved in the mold release direction on the mold side, so that the locking lance is bent and released from the groove, and the connector housing is detached from the one mold in that state. A method for forming a connector housing.   The locking lance is formed between the groove portion and the protruding plate portion by positioning the protruding plate portion of the other forming die along the groove portion in a state where both the forming dies are closed. Item 10. A method for forming a connector housing according to Item 1.   With the two molds closed, the projection of the other mold is brought into contact with the tip of the core member, and the mating terminal insertion hole and mating terminal pick-up surface are formed by the projection and the taper surface on the base end side. 3. The method of forming a connector housing according to claim 1, wherein the connector housing is formed.   4. A vertical surface is formed at an end of the groove portion of the first core in the direction opposite to the mold release, and the locking surface of the locking lance is formed by the vertical surface. A method for forming a connector housing according to claim 1.   The method for forming a connector housing according to claim 1, wherein the second core is slidably disposed between the pair of first cores.   A connector housing formed by the method for forming a connector housing according to claim 1, wherein the connector housing has a wall portion on the connector fitting surface side facing the locking surface of the locking lance. .

Images