JP6865103B2 - Lever type connector - Google Patents

Description

The present invention relates to a lever type connector that is fitted and detached from the mating connector with a low insertion force by operating the lever.

As a lever type connector of this kind, there is one shown in FIG. (See, for example, Patent Document 1).

As shown in FIG. 20, the lever type connector 1 includes a female connector 2 in which a housing body 2b of a female housing 2a is fitted into a hood portion of a male housing of a mating connector (not shown), and a housing body 2b of the female housing 2a. By moving from the temporary locking position on the front side to the main locking position completely mounted on the housing body 2b, the female terminal 3 is double-locked together with the flexible lance and the detection plate 4a (not shown). The front holder 4 is fitted into the annular packing 5 that seals between the hood portion of the male housing and the housing body 2b of the female housing 2a, and the square tubular member accommodating portion 2c at the rear of the housing body 2b. A mat seal 6 that seals a plurality of terminal accommodating chambers 2d formed in the housing body 2b, a mat seal cover 7 that is fitted into the member accommodating portion 2c and covers the mat seal 6, and a rear end portion of the member accommodating portion 2c. It is swingably supported by the electric wire cover 8 mounted on the housing body 2b and a pair of support shafts 2e and 2e projecting from the upper and lower surfaces of the housing body 2b, and is engaged with a cam follower formed in the hood portion of the male housing. A lever 9 having a matching cam groove 9c in the arm portion 9b is provided.

Then, by operating the operating portion 9a of the lever 9, the male housing of the male connector and the female housing 2a of the female connector 2 are fitted and detached with a low insertion force, and a plurality of male terminals housed in the male housing at the time of fitting are fitted and detached. And the female terminals 3 accommodated in the plurality of terminal accommodating chambers 2d of the female housing 2a are electrically connected. The mat seal 6 and the mat seal cover 7 are formed with a plurality of terminal insertion holes 6a and 7a into which the female terminal 3 with an electric wire is inserted.

Japanese Unexamined Patent Publication No. 2005-123102 Japanese Unexamined Patent Publication No. 2011-90880

However, in the conventional connector 1, either or both of the elastic lock portions 8b provided on the side walls 8a and 8a of the electric wire cover 8 are correctly locked to the locked portions 2g and 2g on both sides of the female housing 2a. Even if it is not, since there is no mechanism for detecting it, it is necessary to manufacture a jig for detecting it or to visually confirm it by an operator in the manufacturing process of the wire harness (W / H).

Further, the lever 9 is rotated to lock the locking projection 9d provided on the lower surface side of the operating portion 9a of the lever 9 to the locking projection 8d provided on the ceiling wall 8c of the electric wire cover 8 to fit the connector. However, in order to secure an overstroke when the lock is locked, some clearance is generated between the pair of arm portions 9b and 9b of the lever 9 and the side walls 8a and 8a of the electric wire cover 8, and the vehicle. There was a risk that the lever 9 and the wire cover 8 would rattle due to vibration or the like during mounting.

Therefore, the present invention has been made to solve the above-mentioned problems, and the electric wire cover can be moved to a normal position without being left in the process of being locked, and the lever and the electric wire cover are loose. It is an object of the present invention to provide a lever type connector capable of preventing sticking.

The invention of claim 1 is from a housing in which a plurality of terminal accommodating chambers are formed and fitted / detached to / detached from a mating housing, an electric wire cover mounted so as to cover the rear surface side of the housing, and both ends of an operation portion. In a lever type connector including a lever having a cam groove in which an extended arm portion is supported by the housing via a support shaft and engages with a cam follower of the mating housing, the lever portion rotates in the reverse direction to the arm portion of the lever. An elastic lock piece for prevention is provided, the elastic lock piece is provided with a cover pushing protrusion that contacts the abutting protrusion formed on the side wall of the electric wire cover, and the electric wire cover is provided in the center of the operation portion of the lever. An elastically deformed portion is formed by forming a locking projection to be locked to the formed locking portion, and elastically deforms by pressing a pair of protective walls formed on both sides of the locking portion on both sides of the locking projection. Each is characterized by being formed.

The invention according to claim 2 is the connector according to claim 1, wherein at least a part of the surface of the cover pushing projection that comes into contact with the abutting projection is an inclined surface.

The invention of claim 3 is the connector according to claim 1 or 2, wherein the cover pushing protrusion of the elastic lock piece gets over the abutting protrusion of the electric wire cover at the connector fitting completion position of the operating portion of the lever. It is characterized in that it is in contact with the side wall of the electric wire cover.

The invention of claim 4 is the connector according to claim 1, wherein a housing contact wall that contacts the cover contact surface of the housing is formed on one end side of both side walls of the electric wire cover, and the housing contact wall is formed. A notch is formed in the wall so that the contact portion of the housing contact wall can be elastically deformed.

The invention of claim 5 is the connector according to claim 1, wherein the terminal in the terminal accommodating chamber is moved from the temporary locking position on the front side of the housing to the main locking position mounted on the housing. An elastic arm for temporary locking having a front holder for double locking, and a temporary locking portion for engaging with a temporary engaging portion formed on the housing body of the housing on the peripheral wall portion of the front holder. , The main locking elastic arm having the main locking portion to be locked and disengaged from the main engaging portion formed in the housing body is formed, and the main locking portion is formed on the main locking elastic arm. And the arm reinforcing ribs are formed, respectively, and the main locking portion accommodating groove and the reinforcing rib accommodating groove are formed in the housing body, respectively.

As described above, according to the invention of claim 1, an elastic lock piece for preventing reverse rotation is provided on the arm portion of the lever, and the elastic lock piece comes into contact with the abutting protrusion formed on the side wall of the electric wire cover. By providing the cover push-in protrusion, the wire cover can be moved to a normal position and locked by the cover push-in protrusion of the elastic lock piece without the wire cover being locked to the housing. .. Further, since the elastic lock piece is elastically deformed and is maintained in a state where both side walls of the electric wire cover are sandwiched between the pair of arm portions of the lever, rattling of the lever and the electric wire cover can be surely prevented. In particular, a locking projection that is locked to the locking portion formed on the electric wire cover is formed in the center of the operating portion of the lever, and a pair of protective walls formed on both sides of the locking portion are formed on both sides of the locking projection. By forming the elastically deformed portions that are elastically deformed by pressing, it is possible to reliably prevent the lever from rattling due to the reaction force due to the elastic deformation of the elastically deformed portion of the lever.

According to the second aspect of the present invention, since at least a part of the surface of the cover pushing protrusion that contacts the abutting protrusion is a slope, the cover pushing protrusion can easily get over the abutting protrusion on the slope.

According to the invention of claim 3, at the connector fitting completion position of the operating portion of the lever, the cover pushing protrusion of the elastic lock piece gets over the abutting protrusion of the electric wire cover and comes into contact with the side wall of the electric wire cover. As a result, the clearance between the pair of arm portions of the lever and the pair of side walls of the electric wire cover can be set to the minimum, and the size of the entire connector can be reduced accordingly.

According to the invention of claim 4 , a housing contact wall that contacts the cover contact surface of the housing is formed on one end side of both side walls of the electric wire cover, and a notch is formed in the housing contact wall to form the housing contact. By making the contact part of the contact wall elastically deformable, the electric wire cover can be pushed back by the reaction force of the contact part of the housing contact wall that is elastically deformed, and the electric wire cover can be attached to the housing. Since it is not necessary to secure the clearance between the lock protrusion of the elastic lock piece of the electric wire cover and the locked portion of the housing, it is possible to surely prevent the electric wire cover from rattling with respect to the housing.

According to the invention of claim 5, the elastic arm for temporary locking having a temporary locking portion formed on the housing main body of the housing and the temporary locking portion to be engaged is formed on the peripheral wall portion of the front holder, and the housing main body. The main locking elastic arm having the main locking portion to be locked and disengaged is formed in the formed main engaging portion, and the main locking portion and the arm reinforcing rib are respectively attached to the main locking elastic arm. By forming the main locking portion accommodating groove and the reinforcing rib accommodating groove in the housing body, respectively, the front holder can be easily and surely put into the temporary locking state and the main locking state with respect to the housing body of the female housing. be able to. In particular, when the front holder is temporarily locked to the front side of the housing, there is a clearance between the elastic arm for locking and the housing, but the arm reinforcing rib of the elastic arm for locking and the housing are reinforced. By not providing a clearance between the rib accommodating grooves, the front holder can be prevented from tilting, and the front holder can be assembled in the temporary locking position in an ideal posture.

It is an exploded perspective view which shows the lever type connector of one Embodiment of this invention. It is a perspective view of the female housing of the female connector of the lever type connector. It is a perspective view of the front holder of the lever type connector. (A) is an enlarged perspective view of the reference numeral A portion in FIG. 3, and (b) is an enlarged perspective view of the portion indicated by reference numeral B in FIG. It is a perspective view of the cover of the lever type connector. It is a perspective view which looked at the cover from the wire holding part side. It is a perspective view of the lever of the lever type connector. It is a front view of the lever. It is a front view of the said female connector. FIG. 10A is a cross-sectional view of the front holder along the line XX in FIG. 10 in a temporarily locked state, and FIG. 10B is an enlarged cross-sectional view of a main part in the temporarily locked state. FIG. 10 is a cross-sectional view of the front holder along the line XX in FIG. 10 in the main locked state. It is a cross-sectional view of the locked state of the female housing and the cover. It is a vertical cross-sectional view which shows the locked state of the female housing and a cover. It is a front view before the lever rotation of the lever type connector. 14 is a cross-sectional view taken along the line YY in FIG. It is a front view after the lever rotation of the lever type connector. 16 is a cross-sectional view taken along the line ZZ in FIG. It is a perspective view which shows the state in the process of rotating the lever with the cover not locked in the female housing of the female connector. It is a top view which shows the state in the process of rotating the lever with the cover not locked in the female housing. It is an exploded perspective view which looked at the conventional lever type connector from the rear side.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an exploded perspective view showing a lever-type connector according to an embodiment of the present invention, FIG. 2 is a perspective view of a female housing of a female connector of the lever-type connector, and FIG. 3 is a perspective view of a front holder of the lever-type connector. 4 (a) is an enlarged perspective view of the reference numeral A portion in FIG. 3, FIG. 4 (b) is an enlarged perspective view of the portion indicated by reference numeral B in FIG. 1, FIG. 5 is a perspective view of the cover of the lever type connector, and FIG. A perspective view of the cover as viewed from the wire holding portion side, FIG. 7 is a perspective view of the lever of the lever type connector, FIG. 8 is a front view of the lever, FIG. 9 is a front view of the female connector, and FIG. 10 (a). 10 is a cross-sectional view of the front holder in the temporarily locked state along the line XX in FIG. 10, FIG. 10B is an enlarged cross-sectional view of a main part in the temporarily locked state, and FIG. 11 is the line XX in FIG. FIG. 12 is a cross-sectional view of the front holder in the locked state, FIG. 12 is a cross-sectional view of the female housing and the cover in the locked state, and FIG. 13 is a vertical cross-sectional view showing the locked state of the female housing and the cover. Is a front view before the lever is rotated, FIG. 15 is a cross-sectional view taken along the line YY in FIG. 14, FIG. 16 is a front view after the lever is rotated, and FIG. FIG. 18 is a perspective view showing a state in which the lever is being rotated while the cover is not locked in the female housing of the female connector, and FIG. 19 is a perspective view showing a state in which the cover is not locked in the female housing and the lever is rotated. It is a top view which shows the state in the process of moving operation.

As shown in FIG. 18, the lever type connector 10 is composed of a male connector 11 and a female connector 20 that are fitted and detached from each other with a low insertion force by operating the lever 80. The male connector 11 includes a male housing (housing on the other side) 12 made of synthetic resin. The male housing 12 is composed of a housing main body 12a which is substantially box-shaped and has an opening on the rear surface side, and a hood portion 12b which is integrally projected on the front wall portion side of the housing main body 12a. In the hood portion 12b of the male housing 12, tab portions of a plurality of male terminals (not shown) are projected. Further, on both sides of the hood portion 12b, columnar cam followers 13 that are engaged with the cam grooves 87 formed in the lever 80 are provided.

Then, by operating the lever 80, the female housing 21 of the female connector 20 is fitted into the hood portion 12b of the male housing 12, so that the plurality of male terminals of the male housing 12 and the terminal accommodating chamber 26 of the female housing 21 are inserted. A plurality of female terminals (not shown) housed in the above are electrically connected.

As shown in FIGS. 1, 3, and 9, the female connector 20 includes a female housing 21 made of synthetic resin formed by forming a plurality of terminal accommodating chambers (cavities) 26 accommodating female terminals, and the female. By moving from the temporary locking position on the front side of the housing body 22 of the housing 21 to the main locking position completely mounted on the housing body 22, the female terminal is inserted halfway together with the flexible lance and the detection plate 34 (not shown). A synthetic resin front holder 30 that detects and double-locks, a rubber annular packing 40 that seals between the hood portion 12b of the male connector 11 and the housing body 22 of the female housing 21, and the housing body 22. A matte seal 50 made of rubber or the like that is fitted into a square tubular tubular body 23 at the rear to seal a plurality of terminal housing chambers 26, and a synthetic resin that is fitted into the tubular body 23 to cover the matte seal 50. Matte seal cover 60, a synthetic resin wire cover 70 attached to the rear end side of the tubular body portion 23, and a pair of support shafts 27 integrally protruding from the central rear portion on both sides of the housing body 22. It is provided with a synthetic resin lever 80 that is swingably supported via 27 and has a cam groove 87 that engages with the cam follower 13 of the hood portion 12b of the male housing 12.

As shown in FIGS. 1, 2, and 9, the housing body 22 of the female housing 21 has a rectangular parallelepiped shape (rectangular shape) in which terminal accommodating chambers 26 accommodating a plurality of female terminals are formed in parallel in a plurality of stages vertically and horizontally. It is formed. A flexible lance (another locking means) (not shown) for locking the female terminals accommodated in each terminal accommodating chamber 26 is notched and formed on the upper side of the terminal accommodating chamber 26 of the housing main body 22. Further, a detection plate insertion hole 26a into which the detection plate 34 of the front holder 30 is inserted is formed at a position facing the tip of each lance on the front side of the housing main body 22.

As shown in FIGS. 1 and 3, the front holder 30 is formed in the shape of a synthetic resin box that is fitted to the outside of the housing body 22 of the female housing 21 and has an opening on the rear surface side. That is, the front holder 30 is formed in a rectangular box shape by the flat plate portion 31 and the peripheral wall portion 32, and the peripheral wall portion 32 is mounted on the outer periphery of the housing main body 22 of the female housing 21. The flat plate portion 31 of the front holder 30 is formed with a plurality of terminal insertion holes 33 into which the male terminals of the male connector 11 are inserted. Further, as shown in FIG. 3, a detection plate 34 to be inserted into each detection plate insertion hole 26a of the housing main body 22 is integrally projected at a position facing the tip of each lance on the inner surface side of the flat plate portion 31. is there.

Further, as shown in FIGS. 1, 3 and 10, temporary engaging recesses (temporary engagement) formed on both side surfaces of the housing body 22 of the female housing 21 are provided above and below the peripheral wall portion 32 of the front holder 30. A temporary locking elastic arm 35 having a temporary locking projection (temporary locking portion) 36 that is engaged with the joint portion) 28 is integrally projected. Further, in the center of both sides of the peripheral wall portion 32 of the front holder 30, a main engaging recess (main engaging portion) 29 as a main locking accommodating groove formed on both side surfaces of the housing body 22 of the female housing 21 is engaged. The main locking elastic arm 37 having the main locking protrusion (main locking portion) 38 to be stopped / released is integrally projected.

As shown in FIGS. 4A and 4B, an arm reinforcing rib 38a extending to the locking projection 38 is integrally projected on the back surface of the arm portion 37a of the locking elastic arm 37. At the time of main locking of the female housing 21 of the front holder 30 with respect to the housing body 22, the main locking projection 38 of the main locking elastic arm 37 is accommodated in the main engaging recess 29. Further, as shown in FIGS. 4 (b) and 10 (b), the arm of the elastic arm 37 for locking extends to the center of both side surfaces of the housing body 22 so as to cross the engaging recess 29. A reinforcing rib accommodating groove 29a in which the reinforcing rib 38a is accommodated is formed. As shown in FIGS. 4 (b) and 10 (b), elastic arms for main locking are provided on both front sides of the housing main body 22 when the female housing 21 of the front holder 30 is temporarily locked to the housing main body 22. A temporary locking abutting surface 29b to which the main locking projection 38 of 37 hits is formed.

As shown in FIG. 1, the packing 40 is made of rubber and is formed in a square ring shape, and is attached to a step portion 22a formed in the housing body 22 of the female housing 21 shown in FIG. As a result, the hood portion 12b of the male connector 11 fitted between the housing main body 22 of the female housing 21 and the frame plate-shaped outer shell portion 22A integrally protruding outward from the housing main body 22 is sealed. ..

As shown in FIG. 1, the matte seal 50 is made of rubber and is formed in a rectangular plate shape. A terminal insertion hole 51 into which a female terminal with an electric wire (not shown) is inserted is formed at a position corresponding to each terminal accommodating chamber 26 of the female housing 21 of the mat seal 50.

As shown in FIG. 1, the matte seal cover 60 is made of synthetic resin and is formed in a rectangular plate shape. A terminal insertion hole 61 into which a female terminal with an electric wire is inserted is formed at a position corresponding to each terminal accommodating chamber 26 of the female housing 21 of the mat seal cover 60.

As shown in FIGS. 1, 5 and 6, the electric wire cover 70 is a member for protecting a plurality of electric wires drawn from the rear surface 60b of the mat seal cover 60 from a mechanical load. Therefore, a surface facing the rear surface 60b of the matte seal cover 60 and one end surface continuous with the facing surface are formed so as to open. That is, the electric wire cover 70 is a housing contact wall that covers a pair of side walls 71, 71 forming an opening, a curved ceiling wall 72 having a curved surface, and one end side of the pair of side walls 71, 71 on the narrow side. It is composed of (end portion) 73, and is formed so as to be mounted on the rear end side of the tubular portion 23 of the female housing 21.

As shown in FIGS. 1 and 6, slide ribs 74 are integrally projected from the lower ends of the side wall 71 of the electric wire cover 70, and the slide ribs 74 are formed on both sides of the rear end of the tubular body portion 23 of the female housing 21. It slides between each pair of protruding pieces 24a and 24a and each standing piece 24b that are integrally formed so as to be freely attached to prevent them from coming off.

Further, after the lower end side of the side wall 71 of the electric wire cover 70 slides between the protruding piece 24a and the standing piece 24b of the tubular body portion 23 of the female housing 21, as shown in FIGS. 2, 5, and 12, the lower end of the side wall 71. The lock protrusion 75b of the elastic lock piece 75 integrally formed with the female housing 21 is locked to the concave locked portion 25 formed in the tubular portion 23 of the female housing 21. The elastic lock piece 75 is composed of a long lock arm 75a and a lock protrusion 75b having a locking surface 75c.

Further, as shown in FIGS. 2 and 5, the end wall covering the narrow end side of the pair of side walls 71, 71 of the electric wire cover 70 is integrally projected from the tubular body portion 23 of the female housing 21. The housing contact wall 73 is in contact with the cover contact surfaces 23a and 23a. As shown in FIG. 5, notches 73b and 73b are formed on both sides of the housing contact wall 73, respectively, and the contact portion 73a between the notches 73b of the housing contact wall 73 is elastic. It can be transformed.

Further, as shown in FIG. 5, an electric wire holding portion 76 for holding a plurality of bundled and tape-wound electric wires is integrally projected in a U shape on the tip end side of the opening of the ceiling wall 72 of the electric wire cover 70. There is. Further, between the rib-shaped pair of protective walls 77 and 77 of the electric wire holding portion 76 of the ceiling wall 72, a locking projection 83 formed on the operating portion 81 of the lever 80 is locked (locking portion). ) 78 is integrally projected.

As shown in FIGS. 7 and 8, the lever 80 is integrally formed of an operation portion 81 and a pair of arm portions 82, 82 extending from the left and right ends of the operation portion 81 in a plate shape with a synthetic resin. ..

A locking projection 83 that is locked to the locking projection 78 of the electric wire cover 70 is integrally projected at the center of the lower surface side of the operating portion 81 of the lever 80. As shown in FIGS. 8, 14, and 16, rectangular notches 84 are formed on both sides of the locking projection 83 of the operating portion 81, and the upper portions thereof are both sides of the locking projection 78 of the electric wire cover 70. The pair of protective walls 77, 77 formed in the above form an elastically deformed portion 85 that is elastically deformed by being pressed. Each elastically deformed portion 85 has a slit 85a and a thin-walled portion 85b. That is, notches 84 are formed on both sides of the locking projections 83 of the operating portion 81 to a position where they wrap around the pair of protective walls 77 and 77 of the electric wire cover 70 when the connector is fitted. Further, a slit 85a is formed behind the contact surface of the notch portion 84 of the electric wire cover 70 with the protective wall 77, so that the elastically deformable portion 85 can be elastically deformed when it comes into contact with the protective wall 77 of the electric wire cover 70. The thin-walled portion 85b is formed so as to be.

As shown in FIG. 7, each arm portion 82 of the lever 80 is formed with a bearing hole 86 that rotatably supports each support shaft 27 integrally projected on both side portions of the female housing 21. Further, each arm portion 82 is formed with a cam groove 87 that is engaged with a cam follower 13 formed in the male housing 12. Then, as shown in FIG. 18, the male and female housings 12 and 21 are fitted with a low insertion force via the cam groove 87 and the cam follower 13 by the forward operation of the operation unit 81 of the lever 80 (indicated by the arrow T in the figure). It is designed to be combined. The male and female housings 12 and 21 are separated from each other with a low insertion force by the removing operation of the operating portion 81 of the lever 80.

Further, as shown in FIG. 7, an elastic lock piece 88 for preventing reverse rotation is notched and formed in each arm portion 82 of the lever 80. The elastic lock piece 88 is integrally formed with the lock arm portion 88a and the lock arm portion 88a, and the cover pushing protrusion 89 abutting against the abutting protrusion 79 formed on the side wall 71 of the electric wire cover 70, and the cover pushing protrusion 89. A locking projection 88b for preventing reverse rotation, which is integrally formed at the tip of 89, is provided. The cover pushing protrusion 89 has a vertical surface 89a and a slope 89b that abuts on the abutting protrusion 79 of the electric wire cover 70. That is, the contact surface of the cover pushing protrusion 89 with the abutting protrusion 79 of the electric wire cover 70 is an inclined surface 89b, and after the electric wire cover 70 has moved to the normal locking position (mounting position) of the female housing 21 The lock arm portions 88a of the pair of elastic lock pieces 88, 88, which are set symmetrically, are elastically deformed so as to sandwich the side walls 71, 71 of the electric wire cover 70.

Then, as shown in FIGS. 18 and 19, at the connector fitting completion position (lever forward operation completion position) of the operation portion 81 of the lever 80, the cover pushing protrusions 89 of the pair of elastic lock pieces 88 and 88 are formed. It is in a state where it gets over the abutting protrusion 79 of the electric wire cover 70 and comes into contact with the side walls 71 and 71 of the electric wire cover 70.

According to the lever type connector 10 of the above embodiment, as shown in FIGS. 9 and 10 (a) and 10 (b), the front holder 30 is temporarily locked to the front side of the housing body 22 of the female housing 21 of the female connector 20. In this state, there is a clearance t between the arm portion 37a of the elastic arm 37 for locking and the housing body 22 of the female housing 21, but the back surface of the arm portion 37a of the elastic arm 37 for locking is By not providing a clearance between the arm reinforcing rib 38a and the reinforcing rib accommodating groove 29a of the housing body 22, the front holder 30 is prevented from tilting, and the front holder 30 is assembled in the temporary locking position in an ideal posture. Be done. Further, the reaction force of the elastic arm 37 for locking is increased by the arm reinforcing rib 38a.

Then, as shown in FIG. 11, when the front holder 30 is further pushed rearward of the housing body 22 of the female housing 21, the front holder 30 is completely mounted on the housing body 22 to be in the locked state, and the female terminal is formed. Is double-locked by the flexible lance and the detection plate 34 of the front holder 30, so that the male connector 11 can be fitted to the hood portion 12b. The temporary locking state and the main locking state of the female housing 21 of the front holder 30 with respect to the housing body 22 are as follows: Temporary locking of the elastic arm 35 for temporary locking of the front holder 30 in the temporary engaging recess 28 of the housing body 22 of the female housing 21. The locking projection 36 is locked, and the locking projection 38 of the elastic arm 37 for locking the front holder 30 is locked in the engaging recess 29 of the housing body 22 of the female housing 21. Therefore, each state can be easily and surely set.

Next, as shown in FIGS. 13 and 14, during the work of assembling the electric wire cover 70 to the tubular body portion 23 of the female housing 21, the cover contact surface 23a of the female housing 21 and the housing of the electric wire cover 70 come into contact with each other. The contact portion 73a of the wall 73 interferes. When the assembling work is continued as it is and the electric wire cover 70 is pushed in, the contact portion 73a is elastically deformed, so that the electric wire cover 70 can be pushed in to a lockable position.

As shown in FIG. 12, it is confirmed that the lock protrusion 75b of the elastic lock piece 75 of the electric wire cover 70 is locked to the concave locked portion 25 of the female housing 21, and when the hand is released from the electric wire cover 70, it becomes elastic. As shown in the enlarged view of FIG. 13, the electric wire cover 70 is pushed back by the reaction force of the abutting portion 73a of the deformed housing abutting wall 73, and the electric wire cover 70 is attached to the female housing 21. As described above, since it is not necessary to secure the clearance between the locking surface 75c of the lock protrusion 75b of the elastic lock piece 75 of the electric wire cover 70 and the concave locked portion 25 of the female housing 21, the electric wire cover 70 with respect to the female housing 21 The rattling can be surely suppressed.

Further, as shown in FIG. 18, the elastic lock piece 75 of the electric wire cover 70 of the female connector 20 is not locked to the concave locked portion 25 of the female housing 21, and the lever 80 is fitted with the male connector 11. (The operation of rotating in the direction indicated by the arrow T in FIG. 18), the cover pushing protrusions 89 provided on the pair of arm portions 82 and 82 of the lever 80 and the side walls 71 of the electric wire cover 70, When the abutting protrusion 79 provided on the 71 abuts and the lever 80 is continuously rotated as it is, the electric wire cover 70 is pushed to the regular locking position, and the elastic lock piece 75 of the electric wire cover 70 is the female housing 21. It is locked to the concave locked portion 25. As a result, the electric wire cover 70 can be moved to a normal position and locked by the cover pushing projection 89 of the elastic lock piece 75 without the electric wire cover 70 being locked to the female housing 21. ..

Then, as shown in FIG. 19, when the lever 80 is rotated to the fitting completion position (the position where the forward operation of the lever 80 is completed) of the male and female connectors 11 and 20, each of the pair of arm portions 82 and 82 is rotated. A state in which the lock arm portion 88a of the elastic lock piece 88 is elastically deformed, and the cover pushing protrusions 89 get over the abutting protrusions 79 of the side walls 71 and 71 of the electric wire cover 70 and continue to come into contact with each other so as to sandwich the electric wire cover 70. become. At this time, the slope 89b makes it easier for the cover pushing protrusion 89 to get over the abutting protrusion 79. Further, the reaction force of the lock arm portion 88a of the elastic lock piece 88> the reaction force of the abutting protrusion 79 (the difference is preferably 10 N or more). In this way, the lock arm portions 88a of each elastic lock piece 88 provided on the pair of arm portions 82, 82 of the lever 80 are elastically deformed, and the pair of arm portions 82, 82 elastically deform, and the pair of arm portions 82, 82 form both side walls 71, 71 of the electric wire cover 70. Since the lever 80 and the electric wire cover 70 are maintained in a sandwiched state, rattling of the lever 80 and the electric wire cover 70 can be reliably prevented.

Further, the lever 80 is rotated to lock the locking projection 83 on the lower surface side of the operating portion 81 of the lever 80 to the locking projection 78 at the center of the ceiling wall 72 of the electric wire cover 70, and both the male and female connectors 11 and 20 are engaged. As shown in FIGS. 14 and 15, before the locking projection 78 of the wire cover 70 and the locking projection 83 of the lever 80 are completely locked, they are placed on both sides of the locking projection 83 of the lever 80. The pair of elastically deformed portions 85, 85 provided and the pair of protective walls 77, 77 on both sides of the lock protrusion 78 of the electric wire cover 70 come into contact with each other.

As shown in FIGS. 16 and 17, even after the elastically deformed portion 85 of the lever 80 and the protective wall 77 of the electric wire cover 70 come into contact with each other, the lever 80 is rotated in the fitting completion direction of both the male and female connectors 11 and 20. When the lever 80 is moved, the thin portion 85b of the elastically deformed portion 85 of the lever 80 is elastically deformed, and the lever 80 can be rotated to the lock locking position. After the lever 80 is locked, the backlash of the lever 80 can be reliably suppressed by the reaction force of the thin-walled portion 85b of the elastically deformed elastically deformed portion 85. As described above, the reaction force generated in the thin portion 85b of the elastically deformed portion 85 of the lever 80 can easily and surely suppress the rattling of the lever 80. As a result, the clearance (overstroke) between the pair of arm portions 82 and 82 of the lever 80 and the pair of side walls 71 and 71 of the electric wire cover 70 can be set to the minimum, and the size of the entire connector can be reduced accordingly. Can be planned.

According to the embodiment, according to the embodiment, the female terminal is housed in the female housing and the male terminal is housed in the male housing, but the male terminal is housed in the female housing and the female terminal is housed in the male housing. May be accommodated.

10 Lever type connector 12 Male housing (counterpart housing)
13 Cam Follower 21 Female Housing (Housing)
22 Housing body 23a Cover contact surface 26 Terminal storage chamber 27 Support shaft 28 Temporary engagement recess (temporary engagement part)
29 Engagement recesses (Main engagement part: Main locking part accommodating groove)
29a Reinforcing rib accommodating groove 30 Front holder 32 Peripheral wall 35 Temporary locking elastic arm 36 Temporary locking protrusion (temporary locking part)
37 Elastic arm for locking 38 Locking protrusion (main locking part)
38a Arm reinforcement rib 70 Wire cover 71 Side wall 73 Housing contact wall 73a Contact part 73b Notch 77, 77 Pair of protective walls 78 Locking protrusion (locking part)
79 Butt protrusion 80 Lever 81 Operation part 82 Arm part 83 Locking protrusion 85 Elastic deformation part 87 Cam groove 88 Elastic lock piece 89 Cover pushing protrusion 89a Vertical surface 89b Slope

Claims (5)

A housing in which a plurality of terminal accommodating chambers are formed and fitted / detached to the mating housing, an electric wire cover mounted so as to cover the rear surface side of the housing, and an arm portion extending from both ends of the operation portion are described above. In a lever-type connector including a lever supported by a housing via a support shaft and having a cam groove that engages with a cam follower of the mating housing.
An elastic lock piece for preventing reverse rotation is provided on the arm portion of the lever, and the elastic lock piece is provided with a cover pushing protrusion that contacts the abutting protrusion formed on the side wall of the electric wire cover .
Further, a pair of locking projections formed in the center of the operating portion of the lever and locked to the locking portion formed on the electric wire cover are formed on both sides of the locking projection, and are formed on both sides of the locking portion. A connector characterized in that each of the elastically deformed portions is elastically deformed by being pressed by the protective wall of the connector. The connector according to claim 1.
A connector characterized in that at least a part of the surface of the cover pushing projection that abuts on the abutting projection is an inclined surface. The connector according to claim 1 or 2.
A connector characterized in that the cover pushing protrusion of the elastic lock piece gets over the abutting protrusion of the electric wire cover and comes into contact with the side wall of the electric wire cover at the connector fitting completion position of the operating portion of the lever. .. The connector according to claim 1.
A housing contact wall that contacts the cover contact surface of the housing is formed on one end side of both side walls of the electric wire cover, and a notch is formed in the housing contact wall to form a contact portion of the housing contact wall. A connector characterized by being elastically deformable. The connector according to claim 1.
A front holder that double-locks the terminals in the terminal accommodating chamber by moving from the temporary locking position on the front side of the housing to the main locking position mounted on the housing is provided.
An elastic arm for temporary locking having a temporary locking portion engaged with a temporary engaging portion formed on the housing body of the housing on the peripheral wall portion of the front holder, and a main hook formed on the housing body. Each of the main locking elastic arms having the main locking portion to be locked and disengaged is formed at the joint portion, and the main locking portion and the arm reinforcing rib are formed on the main locking elastic arm, respectively. A connector characterized in that the main locking portion accommodating groove and the reinforcing rib accommodating groove are formed in the housing body, respectively.

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