JP6475489B2 - connector - Google Patents

Description

  The present invention relates to a connector that exists at a position where a lock portion that locks the fitting state between connector housings cannot be seen.

FIG. 8 shows a connector disclosed in Patent Document 1 below.
In the connector 100, when the first connector housing 110 and the second connector housing 120 are properly fitted together, the locking projection 112b of the lock arm 112 provided in the first connector housing 110 is By engaging with the locking recess 122b provided inside the housing 120, the fitting state between the connector housings is locked.

  Further, the first connector housing 110 is equipped with an arm retracting area 113 adjacent to the lock arm 112. The arm retracting area 113 is a space for accommodating the lock arm 112 that has been deflected and displaced when the lock arm 112 is deflected and displaced outward during the fitting of the connector housings.

  The second connector housing 120 is movably held in the fitting direction of the connector housings and can enter the arm retracting area 113, and the slider 125 is biased toward the arm retracting area 113. And a spring member 126.

The slider 125 enters the vacant arm retreat area 113 when the fitting between the connector housings is properly completed and the locking projection 112b of the lock arm 112 is engaged with the locking recess 122b. The displacement of the lock arm 112 in the disengagement direction is restricted.
That is, the slider 125 restricts the movement of the lock arm 112 in the unlocking direction when the connector housings are in the locked state.

JP 2012-59368 A

  However, in the case of the connector 100 of Patent Document 1, the lock portion (the engagement portion between the locking projection 112b and the locking recess 122b of the lock arm 112) that locks the fitting state between the connector housings is the second connector housing. Since it is hidden inside 120, there is a problem that the locked state cannot be easily determined.

  In addition, a slider 125 and a spring member 126 are provided separately from the second connector housing 120 in order to restrict displacement in the unlocking direction with respect to the locked lock arm. Because of the slider 125 and the spring member 126, the number of parts and the number of assembly processes are increased, leading to a problem of increased costs.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problems, and in a connector in which a lock portion for locking the fitting state between the connector housings is not visible, the locked state can be easily and reliably confirmed from the visual appearance. Another object of the present invention is to provide a connector capable of regulating displacement in the unlocking direction without increasing the number of components with respect to a locked lock arm.

The above-described object of the present invention is achieved by the following configuration.
(1) A lock arm provided on one outer side surface of the housing main body rises from a position near the front end of the one outer side surface and extends to the rear end side; and A first connector housing comprising a locking protrusion projecting from the outer surface;
A cylindrical hood portion that accommodates the front end side of the first connector housing is provided, and a locking recess that engages with the locking protrusion and locks the fitting state between the connector housings is provided on the inner surface of the hood portion. A second connector housing,
A connector comprising:
The first connector housing includes:
An index piece provided to protrude in the width direction of the first connector housing from a side surface of a free end of the flexible arm portion;
When the flexible arm portion is not bent and deformed toward the one outer surface side, a distal end portion enters between the indicator piece and the one outer surface, and the flexible arm is engaged in the fitting process between the connector housings. A judgment reference piece equipped such that a tip part overlaps the indicator piece when the part is bent and deformed to the one outer surface side;
A connector comprising:

  (2) When an external force in the detaching direction is applied between the connector housings in a state where the connector housings are temporarily fitted to each other, the locking projections are scooped up to the locking recesses, The connector according to (1) above, wherein a rake face for moving the flexible arm portion in a direction to eliminate the bending deformation is provided.

  (3) The connector according to (1) or (2), wherein the index piece also serves as an operation unit that is pressed when the lock arm is bent and deformed to the unlocked position.

  According to the configuration of (1) above, the locking recess that is the locking portion with which the locking projection of the lock arm engages is provided on the inner surface of the hood portion of the second connector housing. Therefore, the locked state cannot be visually confirmed from the outside.

  In addition, when the connector housings are mated with each other but are not properly mated (half-fitted), the locking projection of the lock arm locks the second connector housing. It is not engaged with the recess. Also, since the tip of the judgment reference piece is positioned on the indicator piece provided at the free end of the lock arm (flexible arm), the position of the indicator piece with respect to this judgment reference piece is visually confirmed. By doing so, it can be determined that the fitting state between the connector housings is incomplete and is not locked. In the middle of the fitting, the connector housings can be pulled apart by pulling the connector housings away from each other.

  When the connector housings are temporarily fitted or fitted, the locking protrusions of the lock arm engage with the locking recesses of the second connector housing. When temporarily engaged, the index piece at the free end of the lock arm, which can be visually confirmed, is positioned below the judgment reference piece, but is applied by applying an external force in the direction of separating between the connector housings. When the combination is completed, the index piece at the free end of the lock arm that can be visually confirmed is overlaid on the judgment reference piece.

  Therefore, by visually confirming the position of the index piece, it is possible to determine that the fitting is completed and that it is securely locked.

  When the fitting is completed, the determination reference piece located under the index piece regulates the displacement of the lock arm in the unlocking direction. Therefore, it is not necessary to equip a dedicated part for restricting the displacement of the lock arm in the unlocking direction, and an increase in the number of components can be prevented.

  According to the configuration of (2) above, when the connector housings are temporarily fitted together and then an external force is applied between the connector housings, the rake face provided in the locking recesses becomes the locking recesses. The locking protrusion before complete engagement is scooped up, and the locking recess and the locking protrusion are completely engaged. Then, the rake face eliminates the bending deformation of the flexible arm portion by the action of scooping up the locking projection, and the rake face is equipped at the free end of the flexible arm portion by the return of the bending deformation of the flexible arm portion. The index piece is surely pushed out onto the judgment reference piece. Therefore, it is possible to reliably obtain a form in which the index piece indicating the fitting completion state overlaps the determination reference piece.

  According to the configuration of (3) above, the index piece provided at the free end of the lock arm also serves as an operation unit for pressing the lock arm, so that a dedicated operation unit must be provided at the free end of the lock arm. Therefore, the structure of the lock arm can be simplified.

  According to the connector according to the present invention, in the connector that exists in a position where the locking portion that locks the fitting state between the connector housings is not visible, the locked state can be easily and reliably determined from the visual appearance. With respect to the locked lock arm, displacement in the unlocking direction can be restricted without increasing the number of components.

  The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

FIG. 1 is an exploded perspective view of an embodiment of a connector according to the present invention. FIG. 2 is a view of the second connector housing shown in FIG. FIG. 3A is an end view from the first connector housing side in a state before the connector housings of the embodiment are fitted to each other, and FIG. 3B is a cross-sectional view taken along line BB in FIG. 4A is an end view from the first connector housing side showing a state at the start of mating of the connector housings according to the embodiment, and FIG. 4B is a cross-sectional view taken along the line CC in FIG. is there. FIG. 5A is an end view from the first connector housing side showing a state in which the connector housings are engaged with each other according to the embodiment, and FIG. 5B is a cross-sectional view taken along the line DD in FIG. . FIG. 6A is an end view from the first connector housing side showing a temporary fitting state between the connector housings of the embodiment, and FIG. 6B is a cross-sectional view taken along line EE of FIG. . FIG. 7A is an end view from the side of the first connector housing in a state where the connector housings of the embodiment are completely fitted together, and FIG. 7B is a cross-sectional view taken along the line F-F in FIG. It is a longitudinal cross-sectional view of the conventional connector.

DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a connector according to the present invention will be described in detail with reference to the drawings.
1 to 7 show an embodiment of a connector according to the present invention, FIG. 1 is an exploded perspective view of an embodiment of the connector according to the present invention, and FIG. 2 is a second connector housing shown in FIG. FIG. 3A is an end view from the side of the first connector housing in a state before the connector housings of the embodiment are fitted to each other, and FIG. 3B is a cross-sectional view of FIG. B sectional view, FIG. 4 (a) is an end view from the first connector housing side showing a state at the start of mating of the connector housings of one embodiment, and FIG. 4 (b) is a cross-sectional view of FIG. C sectional view, FIG. 5 (a) is an end view from the first connector housing side showing a state in which the connector housings are engaged with each other in the embodiment, and FIG. 5 (b) is a DD of FIG. 5 (a). FIG. 6A is a cross-sectional view of the first connector showing a temporary fitting state between the connector housings of the embodiment. 6B is an EE cross-sectional view of FIG. 6A, and FIG. 7A is the first connector housing in a state in which the connector housings of the embodiment are completely fitted to each other. FIG. 7B is an end view from the side, and FIG. 7B is a cross-sectional view taken along line FF in FIG.

  As shown in FIG. 1, the connector 2 according to this embodiment includes a first connector housing 3 and a second connector housing 4 that is a mating counterpart of the first connector housing 3.

  As shown in FIGS. 1 and 3, the first connector housing 3 includes a housing main body 31 that accommodates female terminal fittings (not shown), and a lock arm 32 that is provided on one outer side surface 31 a of the housing main body 31. And an indicator piece 33 provided at the free end of the lock arm 32 and a pair of determination reference pieces 34 provided on the one outer side surface 31a so that the behavior of the lock arm 32 can be discriminated. .

  The housing body 31 is provided with four terminal receiving holes 311 for receiving female terminal fittings (not shown) in a horizontal row. The upper surface of the housing body 31 is an outer surface 31a on which the lock arm 32 is provided. 3 to 7, reference numeral 312 denotes an electric wire connected to a female terminal fitting (not shown) accommodated in the terminal accommodation hole 311.

  The lock arm 32 rises from a position near the front end (right end in FIG. 3B) of the one outer surface 31a and extends to the rear end side of the one outer surface 31a. And a locking projection 32b projecting from the outer surface of the intermediate portion in the extending direction of the elastic arm portion 32a.

  The flexible arm portion 32a has a free end at an end located on the rear end side of the one outer surface 31a. The flexible arm portion 32a can be deflected and displaced in the direction perpendicular to the one outer surface 31a, as indicated by an arrow Z1 in FIG. The free end of the flexible arm portion 32a serves as an operation portion 321 that is pressed when releasing a lock state described later.

  As shown in FIG. 3 (b), the locking projection 32b protrudes from the outer surface (upper surface in FIG. 3 (b)) of the intermediate portion in the longitudinal direction of the flexible arm portion 32a. This locking projection 32b is engaged with the locking recess 44 provided inside the second connector housing 4 when the connector housings are temporarily fitted or fitted together, thereby fitting the connector housings together. Lock the combined state.

  The indicator pieces 33 are respectively provided on both side surfaces of the free end of the flexible arm portion 32a. Each index piece 33 is a protruding piece provided so as to protrude from the side surface of the flexible arm portion 32a in the width direction of the first connector housing 3 (in the direction of arrow Y1 in FIGS. 1 and 3A). In the case of this embodiment, the index piece 33 constitutes a part of the operation unit 321. Further, when the flexible arm portion 32a bends and deforms in the direction in which the flexible arm portion 32a approaches the outer side surface 31a, or when the deformed and deformed state is restored, the index piece 33 and the tip portion of the determination reference piece 34 Interfering and producing a certain restraining force that regulates displacement. However, when the flexible arm portion 32a is bent and deformed with a load greater than a predetermined value, or when the deformed state is restored, the determination reference piece 34 is mainly elastically deformed together with the ribs 313, so that the flexibility is improved. The displacement of the arm portion 32a is allowed.

  As shown in FIGS. 1 and 3, the pair of determination reference pieces 34 are arranged on the inner side in the width direction of the first connector housing 3 from the tops of the pair of ribs 313 erected on one outer surface 31 a on both sides of the lock arm 32. It is a projecting piece equipped towards the. The pair of determination reference pieces 34 are arranged so as to be spaced apart from each other so as to overlap the tip parts of the pair of index pieces 33. When the flexible arm portion 32a is not bent and deformed toward the one outer side surface 31a, the pair of determination reference pieces 34 are, as shown in FIGS. 3 and 7, the index piece 33 and the one outer side surface 31a. The tip portion enters between the two, and the movement of the flexible arm portion 32a toward the one outer surface 31a side by the interference with the index piece 33 is restricted.

  Here, when the flexible arm portion 32a is not bent and deformed toward the one outer surface 31a, for example, when the connector housings are not mated as shown in FIG. 3, or FIG. As shown in FIG. 4, the connector housings are in a state where the fitting is completed.

  However, the restriction of the movement by the determination reference piece 34 is mainly that the determination reference piece 34 is elastically deformed together with the rib 313 when a predetermined load or more acting on the flexible arm portion 32a toward the one outer surface 31a acts. With that, it is canceled. That is, in the following cases, the movement restriction of the flexible arm portion 32a is released by the elastic deformation of the determination reference piece 34 and the rib 313, and the flexible arm portion 32a is displaced toward the one outer surface 31a side. it can. This is the case where a predetermined load or more directed toward the one outer surface 31a is applied to the flexible arm portion 32a by the pressing force applied to the operation portion 321. Alternatively, by the fitting operation between the connector housings, as shown in FIG. 5 (b), the locking projection 32 b gets under the raised portion 43 in front of the locking recess 44, which will be described later, and before the locking recess 44. This is a case where a predetermined load or more toward the one outer surface 31a is applied to the flexible arm 32a by the pressing force acting from the raised portion 43.

  Further, as shown in FIGS. 5 and 6, the determination reference piece 34 is an index piece 33 when the flexible arm portion 32a is bent and deformed toward the one outer surface 31a in the fitting process between the connector housings. It is equipped so that the tip part overlaps the top.

  As shown in FIG. 6, the determination reference piece 34 with the tip projecting over the index piece 33 is interfered with the index piece 33 until a predetermined restoring force is applied to the flexible arm 32 a. The movement of the flexible arm portion 32a in the restoring direction is restricted. However, also in this case, when a force in a restoring direction greater than or equal to a predetermined value is applied to the flexible arm portion 32a by the rake face 45 described later, the flexible arm portion 32a is elastically deformed by the determination reference piece 34 and the rib 313. The movement restriction is released, and the return of the flexible arm portion 32a is allowed.

  The determination reference piece 34 described above restricts the movement of the index piece 33 with a predetermined elastic force and prevents the index piece 33 from being pressed unexpectedly when the connector housings are in a locked state. It also serves as a lock maintaining means for maintaining the state.

  The 2nd connector housing 4 is a connector housing fixedly equipped by the apparatus 5 side, as shown in FIG. As shown in FIGS. 1 to 3, the second connector housing 4 extends from the front end of the housing main body 41 and the housing main body 41 in the connector housing mutual fitting direction (the arrow X1 direction in FIG. 1). A cylindrical hood portion 42, a raised portion 43 and a locking concave portion 44 provided inside the hood portion 42, and a rake face 45 are provided.

  The housing body 41 accommodates and holds a male terminal fitting 411 (see FIG. 2) that fits into a female terminal fitting (not shown) in the first connector housing 3.

  The hood portion 42 has a cylindrical shape that houses the front end side of the first connector housing 3.

  The raised portion 43 is raised on the inner surface of the hood portion 42 facing the outer surface 31a. As shown in FIG. 5, the protruding portion 43 deflects the flexible arm portion 32 a toward the one outer surface 31 a side when the locking projection portion 32 b is rolled in during the fitting operation between the connector housings. When the raised portion 43 bends the flexible arm portion 32a toward the one outer side surface 31a, the bending load acting on the flexible arm portion 32a exceeds the regulation force acting on the index piece 33 by the determination reference piece 34. It becomes. Then, the index piece 33 gets over the determination reference piece 34 and the index piece 33 is inserted below the determination reference piece 34.

  In other words, in the fitting process between the connector housings, the determination reference piece 34 is positioned on the index piece 33 as shown in FIG. 5 due to the bending displacement of the flexible arm portion 32a.

  The locking recess 44 is a recess formed on the rear end side of the raised portion 43. When the first connector housing 3 and the second connector housing 4 are temporarily fitted and fitted, as shown in FIG. 6 and FIG. 7, they are locked by the restoring force of the flexible arm portion 32a that has been bent and deformed. The protrusion 32b for engagement engages with the locking recess 44, and movement of the connector housings in the direction of detachment is restricted. That is, when the connector housings are completely fitted together, the locking recess 44 locks the locking projection 32b and locks the fitting state between the connector housings.

  In the case of the present embodiment, when the connector housings are temporarily engaged with each other, only the distal end portion of the locking projection 32b is engaged with the locking recess 44 as shown in FIG. On the other hand, the tip of the index piece 33 projecting from the free end of the flexible arm portion 32a is caught by the lower surface of the determination reference piece 34, so that the flexible arm portion 32a is further separated from the outer surface 31a. Movement in the direction is restricted.

  The rake face 45 is an inclined surface formed in the locking recess 44 as shown in FIG. This rake face 45 is in the direction of separation between the connector housings in a state where the connector housings are temporarily engaged with each other and only the tip of the locking projection 32b is engaged with the locking recess 44 (FIG. 6B). Then, when an external force (in the direction of arrow X2) is applied, the locking projection 32b is scooped up and the flexible arm 32a is moved in a direction to eliminate the bending deformation of the flexible arm 32a. On the other hand, the load acting from the rake face 45 is larger than the movement restricting force acting on the index piece 33 by the judgment reference piece 34, and the index piece 33 gets over the judgment reference piece 34 as shown in FIG. A shape is formed in which the piece 33 overlaps the determination reference piece 34.

  Next, the behavior of the lock arm 32 when the first connector housing 3 and the second connector housing 4 described above are fitted and connected will be described with reference to FIGS.

  First, as shown in FIG. 3, the front ends of the first connector housing 3 and the second connector housing 4 are butted together. In this situation, in the lock arm 32, the index piece 33 interferes with the determination reference piece 34, and movement on the one outer surface 31a side is restricted. Unless the index piece 33 is particularly depressed, the index piece 33 is in a form of overlapping the determination reference piece 34.

  Next, as shown in FIG. 4, the first connector housing 3 is inserted into the hood portion 42 of the second connector housing 4 (fitting start). When the fitting between the first connector housing 3 and the second connector housing 4 proceeds, the locking projection 32b of the lock arm 32 is under the raised portion 43 in the hood portion 42 as shown in FIG. By rolling in, the flexible arm portion 32a is bent and deformed toward the one outer surface 31a. At this time, since the bending load (shear load) acting on the flexible arm portion 32a when the locking projection portion 32b goes under the raised portion 43 is large, the index piece 33 is more than the regulation force by the judgment reference piece 34. It moves to the one outer side surface 31a side. Therefore, as shown in FIG. 5B, the index piece 33 is positioned below the determination reference piece 34.

  When an external force is applied between the connector housings in the direction in which they are separated from each other in the middle of the fitting shown in FIG. 5, the first connector housing 3 falls off the second connector housing 4.

  Next, when the fitting between the first connector housing 3 and the second connector housing 4 further proceeds and the first connector housing 3 and the second connector housing 4 reach the temporary fitting position, it is shown in FIG. 6B. As described above, the locking projection 32 b gets over the raised portion 43, and the tip end portion engages with the locking recess 44 formed on the rear end side of the raised portion 43. However, if the bending deformation of the flexible arm portion 32a is restored by the engagement of the lock arm 32 with the locking recess 44, the index piece 33 becomes the determination reference piece as shown in FIG. The determination reference piece 34 restricts the movement in the direction in contact with the lower surface of 34 and further away from the outer surface 31a. When the electric force 312 or the first connector housing 3 is pulled in the temporarily fitted state of FIG. 6 to apply an external force in the direction of separating between the connector housings, the locking protrusion 32b is pressed against the rake face 45. Due to the inclination of the rake face 45, the locking projection 32 b is scooped up into the locking recess 44. As a result, a large load acts on the flexible arm 32 a in a direction away from the outer side surface 31 a, and the index piece 33 resists the regulation force of the determination reference piece 34, and the upper side of the determination reference piece 34. Move to. Then, as shown in FIG. 7, the fitting between the first connector housing 3 and the second connector housing 4 is completed, the locking projection 32b is securely engaged with the locking recess 44, and the index piece 33 is A form overlapping the determination reference piece 34 can be obtained.

  According to the configuration of the connector 2 of the embodiment described above, the locking recess 44 that is the locking portion with which the locking projection 32 b of the lock arm 32 is engaged is formed on the inner surface of the hood portion 42 of the second connector housing 4. Equipped with. Therefore, the locked state cannot be visually confirmed from the outside.

  In addition, when the connector housings are engaged with each other, but the fitting is not completed properly (half-fitted state), the locking protrusion 32b of the lock arm 32 is connected to the second connector housing 4. The engagement recess 44 is not engaged. Further, since the tip end portion of the determination reference piece 34 is positioned on the index piece 33 provided at the free end of the lock arm 32 (flexible arm portion 32a), the index piece for the determination reference piece 34 is provided. By visually confirming the position 33, it is possible to determine that the fitting state between the connector housings is incomplete and not locked. In the middle of the fitting, the connector housings can be pulled apart by pulling the connector housings away from each other.

  When the connector housings are temporarily fitted or fitted, the locking projection 32 b of the lock arm 32 engages with the locking recess 44 of the second connector housing 4. When temporarily fitted, the index piece 33 at the free end of the lock arm 32 that can be visually confirmed is positioned below the judgment reference piece 34, but an external force is applied between the connector housings in the direction of separating from each other. When the fitting is completed, the index piece 33 at the free end of the lock arm 32 that can be visually confirmed is overlaid on the determination reference piece 34.

  Therefore, by visually confirming the position of the index piece 33, it is possible to determine that it is in a fitting completion state and is securely locked.

  When the fitting is completed, the determination reference piece 34 located under the index piece 33 restricts the displacement of the lock arm 32 in the unlocking direction. Therefore, it is not necessary to equip a dedicated part for restricting the displacement of the lock arm 32 in the unlocking direction, and an increase in the number of components can be prevented.

  Further, according to the configuration of the connector 2 of the embodiment, the rake face provided in the locking recess 44 when an external force is applied between the connector housings after temporarily fitting the connector housings together. 45 scoops up the locking projection 32b before full engagement with the locking recess 44, and the locking recess 44 and the locking projection 32b are completely engaged. Then, the rake face 45 scoops up the locking projection 32b, so that the bending deformation of the flexible arm 32a is eliminated, and the return of the bending deformation of the flexible arm 32a causes the flexible arm 32a to return. The index piece 33 mounted on the free end is surely pushed out onto the determination reference piece 34. Therefore, it is possible to reliably obtain a form in which the index piece 33 is superimposed on the determination reference piece 34, which indicates that the fitting is completed.

  In addition, according to the configuration of the connector 2 of the embodiment, the index piece 33 provided at the free end of the lock arm 32 also serves as an operation unit when the lock arm 32 is pushed down, so that the free end of the lock arm 32 is provided. It is no longer necessary to provide a dedicated operation unit for the lock arm 32, and the structure of the lock arm 32 can be simplified.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

  For example, in the above-described embodiment, the index piece also serves as the operation unit. However, the index piece may be provided in another part of the operation unit.

  In the above-described embodiment, the determination reference piece also serves as the lock maintaining means for maintaining the locked state. However, apart from the determination reference piece, a member serving as the lock maintenance means is integrated with the first connector housing. You may equip it.

  Here, the features of the embodiment of the connector according to the present invention described above are briefly summarized and listed in the following [1] to [3], respectively.

[1] A flexible arm in which a lock arm (32) mounted on one outer side surface (31a) of the housing body (31) rises from a position near the front end of the one outer side surface (31a) and extends to the rear end side. A first connector housing (3) comprising a flexible arm portion (32a), and a locking projection (32b) projecting from the outer surface of the flexible arm portion (32a),
A latch that includes a cylindrical hood (42) that accommodates the front end side of the first connector housing (3), and engages with the locking protrusion (32b) to lock the mating state between the connector housings. A second connector housing (4) having a recess (44) mounted on the inner surface of the hood portion (42);
A connector (2) comprising:
The first connector housing (3)
An index piece (33) provided so as to protrude from the side surface of the free end of the flexible arm portion (32a) in the width direction of the first connector housing (3);
When the flexible arm portion (32a) is not bent and deformed toward the one outer surface (31a), a tip portion enters between the index piece (33) and the one outer surface (31a), and a connector Criteria provided so that the tip portion overlaps the indicator piece (33) when the flexible arm portion (32a) bends and deforms toward the one outer surface (31a) in the process of fitting the housings together. A piece (34);
A connector (2) comprising:

  [2] When an external force in the detaching direction is applied between the connector housings in a state where the connector housings are temporarily fitted to each other, the locking protrusions (32b) are scooped up to the locking recesses (44), The connector according to [1] above, wherein a rake face (45) for moving the flexible arm portion (32a) in a direction to eliminate the bending deformation of the flexible arm portion (32a) is provided. (2).

  [3] As described in [1] or [2], the index piece (33) also serves as an operation unit that is pressed when the lock arm (32) is bent and deformed to the unlocked position. Connector (2).

2 Connector 3 First Connector Housing 4 Second Connector Housing 31 Housing Body 31a One Outer Surface 32 Lock Arm 32a Flexible Arm 32b Locking Protrusion 33 Index Piece 34 Judgment Reference Piece 42 Hood Part 44 Locking Recess 45 Rake Face

Claims (3)

A lock arm provided on one outer side surface of the housing body rises from a position near the front end of the one outer side surface and extends to the rear end side, and protrudes to the outer surface of the flexible arm unit. A first connector housing comprising a locking projection provided;
A cylindrical hood portion that accommodates the front end side of the first connector housing is provided, and a locking recess that engages with the locking protrusion and locks the fitting state between the connector housings is provided on the inner surface of the hood portion. A second connector housing,
A connector comprising:
The first connector housing includes:
An index piece provided to protrude in the width direction of the first connector housing from a side surface of a free end of the flexible arm portion;
When the flexible arm portion is not bent and deformed toward the one outer surface side, a distal end portion enters between the indicator piece and the one outer surface, and the flexible arm is engaged in the fitting process between the connector housings. A judgment reference piece equipped such that a tip part overlaps the indicator piece when the portion is bent and deformed toward the one outer surface side;
A connector comprising:   When an external force in the direction of separation is applied between the connector housings in a state where the connector housings are temporarily fitted to each other, the locking projections are scooped up and the flexible arm portions are deformed. The connector according to claim 1, further comprising a rake face that moves the flexible arm portion in a direction to be eliminated.   The connector according to claim 1, wherein the index piece also serves as an operation unit that is pressed when the lock arm is bent and deformed to a lock release position.

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