JP2007141609A - Connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the holding force that prevents a terminal fitting from coming out backward, while reducing the size of the terminal fitting. <P>SOLUTION: A front end of a locking projection 5B is arranged in the front of an extending end portion 14C of a tongue piece 14 of the terminal fitting 3, and a rear end of the locking projection 5B is arranged behind the extending end portion 14C of the tongue piece 14 with the locking projection 5B of a lance 5 being inserted in the inside of a body portion 6 through a lance locking hole 12 that opens at a bottom surface portion 6A of the body portion 6 of the terminal fitting 3. The extending end portion 14C of the tongue piece 14 is positioned by spacing inwardly from the locking projection 5B. Accordingly, it is possible to set a maximally long dimension in the forward and the backward directions for the locking projection 5B, at a height position where a front end surface 5C of the locking projection 5B receives a shear force from a front edge 12A of the lance locking hole 12 and, hence, to enlarge the sectional area against the shear force. Accordingly, holding force for preventing the terminal fitting 3 from coming out backward can be improved, while the size of the terminal fitting 3 is being reduced. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a connector.

As a general structure of the connector in which the locking projection of the lance enters the inside of the terminal fitting and prevents the lance from being pulled backward, the one described in Patent Document 1 is known. This is provided with a connector housing having a cavity penetrating in the front-rear direction and a terminal fitting accommodated in the cavity. The terminal fitting has a cylindrical main body portion with a tongue piece disposed therein, and a lance locking hole is provided in the bottom surface portion of the main body portion. The tongue piece is extended in a folded shape toward the rear from the front edge of the bottom surface portion of the main body, and the extended end portion of the tongue piece is supported by the inner wall of the bottom surface portion behind the lance locking hole. Have taken. On the other hand, the lance is provided with a protruding protrusion that enters the inside of the main body and engages with the front edge of the lance locking hole.
JP 2000-357555 A

  However, since this is based on a two-fulcrum structure, the extended end portion of the tongue piece is located behind the position of the rear opening edge of the lance locking hole. This means that the front-rear length of the lance locking hole is restricted, and consequently, the front-rear length of the locking projection of the lance entering here is also restricted. This also means a restriction on the shearing area of the locking protrusion when the terminal fitting is pulled, which is an obstacle to securing a sufficient holding force for the terminal fitting. The present invention has been completed based on the above circumstances, and an object of the present invention is to prevent the terminal metal fitting from being reduced while maintaining the holding force against the rearward removal of the terminal metal fitting.

  As a means for achieving the above object, the invention of claim 1 is characterized in that either one of the connector housings that can be fitted to each other has a cavity penetrating in the front-rear direction and a lance disposed in the cavity. In the cavity, a terminal fitting having a cylindrical main body portion can be accommodated, and a lance locking hole is provided in the bottom surface portion of the main body portion. A locking projection that protrudes into the inside of the main body through the lance locking hole and locks with the opening edge of the lance locking hole is provided protruding from the front edge of the bottom surface. A connector in which a tongue piece extending in a folded shape toward the rear is provided so as to be able to bend, and an extension end portion of the tongue piece extending backward from a contact point with a male tab is the locking protrusion. To float inward from the club The front end of the locking projection is arranged forward of the extended end, and the rear end of the locking projection is arranged rearward of the extended end. .

  According to a second aspect of the present invention, in the first aspect of the present invention, the tongue piece abuts on a support surface in which the extended end portion is raised from the bottom surface portion at least when the male tab and the contact point are connected. It has the feature that it is supported by.

  The invention according to claim 3 is characterized in that, in the invention according to claim 2, the support surface is formed by bending inward a range from the bottom surface portion to the side surface portion side of the main body portion. Have.

The invention of claim 4 is characterized in that, in the invention of claim 2 or claim 3, a pair of the support surfaces are provided in the width direction.
According to a fifth aspect of the present invention, in the first aspect of the present invention, the support surface is formed by bending the bottom surface portion of the main body portion forward in a cantilever manner and inwardly. The opening of the bottom surface portion formed by bending is characterized in that it communicates with the lance locking hole.
According to a sixth aspect of the present invention, in the first or second aspect of the present invention, at least one of the both side edges in the width direction of the support surface is formed with a projecting protrusion projecting sideways. In addition, a receiving portion is provided at a position facing the support protrusion on the side surface portion of the main body, and the support protrusion can be locked to the receiving portion.

<Invention of Claim 1>
According to the first aspect of the present invention, the front end of the locking projection is arranged in front of the extending end of the tongue piece by positioning the extending end portion of the tongue piece so as to float inward from the locking projection. And the rear end of the locking projection is arranged behind the extended end of the tongue piece, so that the longitudinal length of the locking projection at the position where the shearing force is received from the opening edge of the lance locking hole is increased. As a result, the cross-sectional area that resists the shearing force can be increased, and the holding force against the rearward removal of the terminal fitting can be improved while the terminal fitting is downsized.

<Invention of Claim 2>
According to the invention of claim 2, since the extended end portion of the tongue piece comes into contact with the support surface raised from the bottom surface portion at least when connected to the male tab, it is ensured that the locking projection portion interferes with the tongue piece. Can be avoided. In addition, since the tongue piece has a structure that is supported at two points, that is, the front edge and the extended end portion, the contact pressure with respect to the male tab is strengthened as compared with the case where the structure is supported at one point. It is possible to increase.

<Invention of Claim 3>
According to invention of Claim 3, since it forms by bending up the range from the bottom face part of a main-body part to a side part, it can provide simply and at low cost.

<Invention of Claim 4>
According to the invention of claim 4, since the pair of support surfaces are provided in the width direction, the supporting posture can be stabilized without twisting and deforming the tongue piece.
<Invention of Claim 5>
According to the invention of claim 5, the support surface is formed by bending the bottom surface portion of the main body portion forward in a cantilever manner and inwardly, so that it can be provided simply and at low cost. .
<Invention of Claim 6>
According to the sixth aspect of the present invention, the support protrusion is provided on the support surface, and the receiving portion that can be locked to the support protrusion is provided on the side surface portion, so that the tongue piece is reliably supported.

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. The connector in this embodiment has a connector housing 1 and a cavity 2 penetrating in the front-rear direction. A substantially front half of the cavity 2 is a terminal accommodating hole 2A having a substantially square hole in cross section, and a substantially rear half of the cavity 2 is a rubber plug mounting hole 2B having a substantially circular hole in cross section. As shown in FIG. 1, the terminal fitting 3 can be accommodated in the cavity 2 from the rear. The terminal fitting 3 is secured to the front by a front wall 4 inside the cavity 2 and is prevented from being pulled backward by a lance 5 inside the cavity 2. Further, the front wall 4 has a male tab insertion hole 4 </ b> A through which a male tab (not shown) arranged in the mating connector housing enters.

  The terminal fitting 3 has a long shape in the front-rear direction as a whole, and is formed by punching a metal flat plate and bending it. As shown in FIG. 7, the terminal fitting 3 includes a rectangular tube-shaped main body portion 6, a wire barrel portion 7 for caulking and fixing a core wire of the electric wire W, and a rubber plug 8, and a covering portion for the electric wire W. It consists of an insulation barrel portion 9 for caulking and fixing. When the terminal fitting 3 is inserted into the cavity 2, the main body 6 is accommodated in the terminal accommodating hole 2A, and the rubber plug 8 is accommodated in the rubber plug mounting hole 2B.

  The rubber plug 8 is made of, for example, silicon and has a cylindrical shape as a whole, and has a wire insertion hole penetrating in the front-rear direction (axial direction) at the center thereof. The rubber plug 8 is fitted to the terminal covering of the wire W through the wire insertion hole. It has come to be. The outer peripheral surface of the front end portion of the rubber plug 8 is a pressure-bonded portion 10 around which the insulation barrel portion 9 is wound, and the rubber plug 8 is held by the terminal fitting 3 when the insulation barrel portion 9 is crimped thereto. It has become. A plurality of (three in the illustrated case) lip portions 11 that are arranged in parallel at a predetermined interval in the front-rear direction are formed in the circumferential direction behind the bonded portion 10 on the outer peripheral surface of the rubber plug 8. Each lip portion 11 is configured to protrude radially outward, and when the rubber plug 8 is inserted into the cavity 2, the lip portion 11 is in close contact with the inner peripheral surface of the rubber plug mounting hole 2B, and through the rubber plug mounting hole 2B. Ingress of water is restricted.

  The lance 5 is cantilevered so as to protrude forward on the bottom surface in the terminal accommodating hole 2A. The lance 5 can be bent, and a bending space S is secured below the lance 5. The lance 5 includes a base portion 5A extending forward from the back wall of the bending space S, and a locking protrusion 5B that protrudes upward on the upper surface side of the front end. The locking projection 5B is formed to become narrower as it goes upward. 12A is an enlarged view of the lance 5 in FIG. 1, and FIG. 12B is a sectional view taken along the line XII-XII in FIG. 1A (the boundary line between the base portion 5A and the locking projection 5B). The boundary is a reference plane B that forms a horizontal plane. The rear portion of the lance 5 has the same height as the reference surface B, is continuous with the lance 5 with the same width as the base portion 5A, and protrudes in a rib shape from the bottom surface of the terminal accommodating hole 2A. And the upper surface becomes the horizontal slidable contact surface 5E, and is slidably contacted while providing support to the bottom surface portion 6A of the main body 6 when the terminal fitting 3 is inserted. As a result, the terminal fitting 3 enters the terminal receiving hole 2A while bending the lance 5 into the bending space S, and when the lance 5 returns, the entire region (the range of the entire height and width) of the locking projection 5B is changed. It will enter the locking hole 12. In other words, the reference plane B means a shearing surface that is flush with the opening surface of the lance locking hole 12 when locked to the terminal fitting 3 and resists the shearing force received by pulling the terminal fitting 3 backward. become.

  The bending space S is opened in the front surface of the connector housing 1, and this opening is communicated with the male tab insertion hole 4A, so that a jig insertion hole 13 is formed. The release can be released by inserting a release jig (not shown) through the jig insertion hole 13 and flexing and deforming the lance 5. As shown in FIG. 8, the jig insertion hole 13 is provided in communication with the inside of the terminal receiving hole 2A, so that the lance 5 faces from the front as shown in FIG. Further, between the jig insertion hole 13 and the terminal accommodation hole 2A, a pair of support surfaces 4B and 4B are formed to protrude on both sides in the width direction of the terminal accommodation hole 2A, thereby restricting the drop of the terminal fitting 3. .

  The main body portion 6 of the terminal fitting 3 has a bottom surface portion 6A, both side surface portions 6B and 6B rising upward from both side edges of the bottom surface portion 6A, and the both side surface portions 6B and 6B facing the bottom surface portion 6A. The upper surface portion 6C is formed by overlapping two sheets by bending each other inward. As shown in FIG. 1, the lower one of the two upper surface portions 6C is knocked out downward and along the length direction to form a contact protrusion 6D. On the other hand, the bottom surface portion 6A is provided with a tongue piece 14 that is bent in a folded shape from the front edge thereof toward the rear side. Of the both side surface portions 6B and 6B of the main body portion 6, portions facing both widthwise side edge portions of the front edge 14D of the tongue piece 14 (front edge of the bottom surface portion 6A) are exposed from the outside by being cut out.

  As shown in FIG. 1, the tongue piece 14 has a contact 14 </ b> A protruding upward in a dome shape at the apex portion thereof. When the male tab enters the inside of the main body 6 through the male tab insertion hole 4A, the contact protrusion 6D and the contact 14A can be elastically sandwiched between the contact protrusion 6D and the contact 14A. The distance between is set. In addition, a pair of restricting pieces 14 </ b> B are formed on both side edges in the width direction of the contact 14 </ b> A of the tongue piece 14. Of the tongue piece 14, an extended end portion 14 </ b> C rearward from the contact 14 </ b> A is folded back upward although it is minute.

  A lance locking hole 12 is provided across the entire width of the bottom surface portion 6A of the main body portion 6. The locking projection 5B of the lance 5 can enter the lance locking hole 12. The locking projection 5B includes a front end surface 5C that is inclined forward in an overhang shape, and an inclined surface 5D that forms a gentle downward gradient from the upper edge to the rear of the front end surface 5C. In a state where the lance 5 enters the inside of the main body 5 through the lance locking hole 12, the front end surface 5C of the locking projection 5B is locked with the front edge 12A of the lance locking hole 12, and the rear of the terminal fitting 3. It is prevented from being removed.

  A pair of support surfaces 15 and 15 are formed so as to protrude from both side surface portions 6B and 6B in such a manner that the rear end portion of the lance locking hole 12 is raised from the bottom surface portion 6A of the main body portion 6. Each of the support surfaces 15 and 15 is a surface for supporting the extended end portion 14C of the tongue piece 14 when the male tab is inserted. As shown in FIG. 4, the range from the bottom surface portion 6A to the side surface portion 6B is inward. By hooking up and down, a catching margin for the extended end portion 14C is earned. The extended end portion 14C is in contact with the upper surface of the support surface 15 in this embodiment even before the male tab is inserted. Further, the longitudinal length of the support surface 15 is set so that the extended end portion 14 </ b> C is supported on the upper surface of the support surface 15 until the male tab is inserted into the normal position. That is, since the tongue piece 14 has a structure that is supported at two points of the front edge 14D and the extended end portion 14C, the contact pressure with respect to the male tab is strengthened rather than being supported only by the front edge 14D of the tongue piece 14. Connection reliability can be improved.

  When the terminal fitting 3 is pulled rearward in a state of being locked with the front edge 12A of the lance locking hole 12, the locking protrusion 5B receives a shearing force in the front-rear direction by the front edge 12A. Therefore, in order to secure the holding force against the rearward removal of the terminal fitting 3, the longitudinal length at the height position where the shearing force is received is made as long as possible so that the cross-sectional area against the shearing force is increased. It is required to do. For this reason, it is formed so that the rear end of the inclined surface 5D of the locking projection 5B reaches a position where the rear end of the lance locking hole 12 is substantially aligned. As a result, the front end surface 5C of the locking projection 5B is positioned forward of the extension end 14C of the tongue piece 14 by positioning the extended end portion 14C of the tongue piece 14 so as to float inward from the locking projection 5B. And the rear end of the inclined surface 5D of the locking projection 5B can be arranged behind the extended end portion 14C of the tongue piece 14. Further, since the inclined surface 5D is provided with the support surface 15, interference between the tongue piece 14 and the locking projection 5B can be surely avoided, and the inclined surface 5D of the locking projection 5B and the lower surface side of the support surface 15 are provided. An upward gradient toward the front is set so that the interval between and is minimized. The rear end portion of the inclined surface 5D deflects the lance 5 into the bending space S so as not to deform the front edge 14D of the tongue piece 14 when the terminal fitting 3 is inserted into the cavity 2 from behind. The gradient is set to the extent that it can.

  A pair of openings are provided at positions facing the restricting pieces 14B of the tongue piece 14 on the side face portion 6B of the main body 6, and the opening edges of these openings are the restricting portions 16. The restricting portion 16 can restrict the tongue piece 14 from being bent excessively by the restricting piece 14B engaging with the restricting portion 16 when the tongue piece 14 is bent and deformed in the vertical direction within the elastic limit. Is to do. FIG. 3 is a longitudinal sectional view of the restriction portion 16 as viewed from the front. The second restriction portion 16B on the left side of the drawing is a hole that penetrates the side surface portion 6B on the left side of the drawing, The first restricting portion 16A on the right side in the figure is formed by projecting a part of the side surface portion 6B on the right side in the figure outward. Specifically, the first restricting portion 16 </ b> A is provided with a pair of slits that are long in the front-rear direction and opposed to each other, and knocks out a range surrounded by both slits from the inside of the main body portion 6 to the outside. It is formed by. At this time, the stabilizer 17 which exhibits the terminal incorrect insertion prevention function mentioned later is formed in the outward of the 1st control part 16A by the said hammering. That is, the first restricting portion 16A is formed as an opening edge opened in the inner wall of the side surface portion 6B by being knocked out when forming the stabilizer 17, and the restricting piece 14B can be locked to the opening edge. In addition, it is possible to prevent erroneous terminal insertion and restrict excessive bending of the tongue piece 14 at the same place, and the number of places constituting other functional parts increases, and the degree of freedom in design increases.

  As shown in FIG. 7, the stabilizer 17 has a shape in which a front end surface 17 </ b> A stands up with respect to the side surface portion 6 </ b> B. When the terminal fitting 3 is inserted from the rear of the cavity 2, a guide recess 18 is formed in the inner wall of the cavity 2 facing the stabilizer 17 as shown in FIG. 11. As shown in FIG. 8, the guide recess 18 is formed in the cavity 2 along the front-rear direction from the rear end of the terminal accommodating hole 2 </ b> A to the vicinity of the front end. On the other hand, a detection recess 19 is formed in the cavity 2 at a position symmetrical to the guide recess 18 in the width direction. The detection recess 19 has a shape in which the vicinity of the rear end of the terminal accommodating hole 2A is partially cut away. For this reason, when the terminal fitting 3 is inserted into the cavity 2 in a normal posture, the guide recess 18 allows the stabilizer 17 to enter, so that the insertion of the terminal fitting 3 is allowed, but the terminal fitting 3 is When inserted into the cavity 2 in a reversed posture, the front end surface 17A of the stabilizer 17 comes into contact with the front end surface of the detection recess 19, and the entry of the stabilizer 17 is restricted near the rear end of the terminal accommodating hole 2A. Incorrect insertion of the terminal fitting 3 is detected.

The present embodiment has the above-described structure, and the operation thereof will be described subsequently.
First, the terminal fitting 3 is inserted into the cavity 2 from behind. At this time, when the terminal fitting 3 is inserted into the cavity 2 in a normal posture, the guide recess 18 allows the stabilizer 17 to enter, so that the insertion of the terminal fitting 3 is allowed, but the terminal fitting 3 is moved up and down. When inserted into the cavity 2 in a reversed posture, the front end surface 17A of the stabilizer 17 abuts against the front end surface of the detection recess 19 so that erroneous insertion of the terminal fitting 3 is restricted. When the front edge 14D of the tongue piece 14 rides on the locking protrusion 5B while the bottom surface portion 6A of the main body portion 6 is slidably contacted with the slidable contact surface 5E of the lance 5, the terminal fitting 3 moves the lance 5 into its bending space S. When it is bent inward and further pushed, the main body 6 advances in the terminal accommodating hole 2A while sliding on the inclined surface 5D. Then, the front end surface of the main body portion 6 comes into contact with the front wall 4 and the front stop is made. At the same time, the lance 5 is elastically restored and enters the inside of the main body portion 6 through the lance locking hole 12, and the front end surface 5C By locking to the front edge 12A of the locking hole 12, it is prevented from coming out backward.

  In a state where the terminal fitting 3 is accommodated in the cavity 2, the front end surface 5C of the locking projection 5 </ b> B generates a shearing force due to the front edge 12 </ b> A of the lance locking hole 12, for example, when the electric wire W is strongly pulled backward. There is a case to receive. In such a case, since the entire region of the locking projection 5B has entered the lance locking hole 12, the reference surface B described above is a surface that resists shearing. Since the reference surface B is expanded by lifting the extended end portion 14C as compared with the conventional case, the holding force for preventing the terminal fitting 3 from being pulled backward can be enhanced. In this regard, in the present embodiment, the extended end portion 14C of the tongue piece 14 is supported at a position floating from the bottom surface portion 6A of the main body portion 6 by the support surface 15, and the rear end of the locking projection 5B is the tongue piece 14. Since the terminal end 2C is disposed rearward of the extended end portion 14C, it is possible to improve the holding force against the rearward retaining while reducing the size of the terminal fitting 2. In addition, since the interference between the tongue piece 14 and the locking projection 5B is reliably avoided by installing the support surface 15, the distance between the inclined surface 5D of the locking projection 5B and the lower surface side of the support surface 15 is minimal. It was possible to set the gradient of the inclined surface 5D so that Further, since the tongue piece 14 has a structure that is supported at two points of the front edge 14D and the extended end portion 14C, the contact pressure with respect to the male tab is strengthened rather than being supported only by the front edge 14D. It is possible to increase the sex.

  Next, the mating connector housing is fitted, and the male tab and the terminal fitting 3 are connected. The male tab is inserted into the main body 6 from the front through the male tab insertion hole 4A. When the tip of the male tab reaches the contact 14A of the tongue piece 14, the male tab is bent elastically between the contact 14A and the contact protrusion 6D while keeping the contact state while bending the tongue piece 14 downward. Then, the inside of the main body 6 is entered.

  As described above, in the present embodiment, the front end surface 5C of the locking projection 5B is positioned on the tongue piece 14 by positioning the extended end portion 14C of the tongue piece 14 so as to float inward from the locking projection 5B. Since the rear end of the inclined surface 5D of the locking projection 14B is arranged behind the extended end portion 14C of the tongue piece 14, the locking projection 14B is disposed forward of the extended projection 14C. The front and rear lengths of the lance locking hole 12 at the position where the shearing force is received from the front edge 12A can be increased, and the cross-sectional area against the shearing force can be increased. It is possible to improve the holding force against the rearward retaining of 3. Here, at least when connected to the male tab, the extended end portion 14C of the tongue piece 14 abuts on the support surface 15 raised from the bottom surface portion 6A, so that it is ensured that the locking projection 5B interferes with the tongue piece 14. Since the tongue piece 14 has a structure that is supported at two points, that is, the front edge 14D and the extended end portion 14C, the tongue piece 14 is in contact with the male tab as compared with the case where the tongue piece 14 is supported at one point. It is possible to enhance the connection reliability by strengthening the pressure. Moreover, since the support surface 15 is formed by bending inward the range from the bottom surface portion 6A to the side surface portion 6B of the main body portion 6, it can be provided simply and at low cost. Further, since the pair of support surfaces 15 are provided in the width direction, the supporting posture can be stabilized without twisting and deforming the tongue piece 14.

  In addition to these, since the first restricting portion 16A is formed so as to be partially shared with the structure portion of the stabilizer 17, it contributes to the miniaturization of the terminal fitting 3 and constitutes another functional portion. Space is secured and design freedom is increased. Moreover, since the edge part of the location which cut the slit becomes the control part 16, the same edge part can be planarized and, thereby, the excessive bending control can be stabilized. In addition, since the amount of outward protrusion of the stabilizer 17 can be increased, an erroneous insertion preventing function can be enhanced.

<Embodiment 2>
A second embodiment of the present invention will be described with reference to FIG. The connector in the present embodiment is obtained by partially changing the structure of the stabilizer 17 of the terminal fitting 3 in the first embodiment, and the description of other overlapping structures is omitted. That is, in the first embodiment, the stabilizer 17 is provided by slitting up and down and knocking out between them, whereas the stabilizer 20 of the present embodiment knocks out without slitting. Thus, it is provided. The first restricting portion 16A is configured such that when the tongue piece 14 is bent and deformed in the vertical direction within its elastic limit, the restricting piece 14B is engaged with the first restricting portion 16A, so that the tongue piece 14 is excessively bent. It can be regulated. In this way, no opening is generated in the side surface portion 6B of the terminal fitting 3 due to the slit cutting, and the stabilizer 20 can be configured with the side surface portion 6B closed, so that entry of foreign matter can be avoided.
<Embodiment 3>
A third embodiment of the present invention will be described with reference to FIGS. The connector in the present embodiment is obtained by partially changing the structure of the support surface 15 of the terminal fitting 3 in the first embodiment, and description of other overlapping structures is omitted. That is, in the first embodiment, the support surface 15 is formed by bending the range from the bottom surface portion 6A to the side surface portion 6B of the main body 6 inward, whereas the support surface 21 of the present embodiment is A pair of slits are provided from both side edges in the width direction of the lance locking hole 12 toward the rear, and a portion sandwiched between the slits is formed by bending toward the inside of the main body 6. The opening of the bottom surface portion 6 </ b> A formed by the bending is a lance locking hole 12. The bent portion is composed of a tapered surface that forms an upward gradient from the bottom surface portion 6 </ b> A toward the front, and a flat surface that extends forward from the front edge of the tapered surface. In addition, a pair of support protrusions 22 and 22 are formed so as to protrude from both side edges of the bearing surface 21 in the width direction, and a pair of receiving parts 23 are provided at positions facing both support protrusions 22 and 22 on both side surface parts 6B and 6B. , 23 are open. Both supporting protrusions 22 and 22 can be locked to the opening edges of both receiving portions 23 and 23. In this way, even if the support surface 21 receives an unreasonable force from the extended end portion 14C of the tongue piece 14, it is possible to restrict the support surface 21 from being bent and displaced, and the support to the tongue piece 14 is ensured. Become.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.

  (1) In the present embodiment, the extended end 14C is always in contact with the bearing surface 15, but may be separated in a natural state and supported as the male tab enters.

  (2) In the present embodiment, the tongue piece 14 is set to the length position where the rearward extending end portion 14C is supported by the support surface 15, but may be further extended rearward.

  (3) In the present embodiment, the extended end portion 14C is configured to be supported by the support surface 15 after being connected to the male tab, but the support surface 15 can be omitted.

  (4) In the present embodiment, the main body 6 is illustrated as a rectangular tube, but according to the present invention, the main body 6 may be in other forms as long as the shape of the main body 6 is cylindrical. For example, it may be cylindrical.

  (5) According to the present invention, the second restricting portion 16B may have another form as long as it can be locked with the restricting piece 14B. For example, a part of the side surface portion 6B is knocked inward. Thus, it may be made to project inward from the inner wall of the side surface portion 6B and be engaged with the restricting piece 14B, and a locking structure can be made without being perforated.

  (6) In the present embodiment, the restriction portion 16 and the restriction piece 14B are illustrated as a pair provided in the width direction, but according to the present invention, the function as the excessive deflection restriction of the tongue piece 14 is illustrated. If it can be exhibited, it is not always necessary to provide a pair of the restricting portion 16 and the restricting piece 14B.

The longitudinal cross-sectional view which shows the state which the lance entered into the inside of the main-body part in Embodiment 1. Enlarged view of part A in FIG. III-III line sectional view in FIG. IV-IV line sectional view in FIG. Side sectional view showing a state in which the regulating piece has entered inside the stabilizer Enlarged view of part B in FIG. Plan view of the terminal fitting Side sectional view of the cavity as seen from above Longitudinal section viewed from the side Front view from the front Rear view seen from behind (A) Enlarged view of lance in FIG. 1 (B) Cross section taken along line XII-XII in (A) The longitudinal cross-sectional view which shows the stabilizer in Embodiment 2. Side view showing the terminal fitting when the stabilizer and the regulating part are provided separately The longitudinal cross-sectional view which shows the bearing surface in Embodiment 3. XVI-XVI line sectional view in FIG. XVII-XVII line sectional view in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Connector housing 2 ... Cavity 3 ... Terminal metal fitting 5 ... Lance 5B ... Locking protrusion 5C ... Front end surface (front end) of locking protrusion
6 ... Main body 6A ... Bottom 6B ... Side 12 ... Lance locking hole 12A ... Front edge (opening edge) of lance locking hole
14 ... Tongue piece 14C ... Extension end part 15, 21 ... Bearing surface 22 ... Supporting protrusion 23 ... Receiving part

Claims (6)

Either one of the two connector housings that can be fitted to each other is provided with a cavity penetrating in the front-rear direction and a lance disposed in the cavity,
In the cavity, a terminal fitting having a cylindrical main body portion can be accommodated, and a lance locking hole is provided in the bottom surface portion of the main body portion,
The lance is provided with a protruding protrusion that enters the inside of the main body through the lance locking hole and locks with the opening edge of the lance locking hole.
In the inside of the main body portion, a tongue piece in a form extending in a folded shape from the front edge of the bottom surface portion toward the rear is provided so as to be deflectable,
The front end of the locking projection is positioned more than the extending end by positioning the protruding end of the tongue piece behind the contact with the male tab inwardly from the locking projection. A connector, characterized in that the connector is arranged forward and the rear end of the locking projection is arranged behind the extended end. 2. The connector according to claim 1, wherein the tongue piece is supported by contacting the extending end portion with a support surface raised from the bottom surface portion at least when the male tab and the contact point are connected. . The connector according to claim 2, wherein the support surface is formed by bending inward a range from the bottom surface portion to the side surface portion of the main body portion. The connector according to claim 2 or 3, wherein a pair of the support surfaces are provided in the width direction. The support surface is formed by bending the bottom surface portion of the main body portion forward in a cantilever manner and inwardly causing the opening of the bottom surface portion to communicate with the lance locking hole. The connector according to claim 2. At least one of the both side edges in the width direction of the bearing surface is formed with a support protrusion protruding toward the side, and at a position facing the support protrusion on the side surface of the main body, The connector according to claim 2, wherein a receiving portion is provided, and the support protrusion can be locked to the receiving portion.

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