JP3903815B2 - Lever type connector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lever-type connector.
[0002]
[Prior art]
Conventionally, as an example of a lever-type connector, one described in JP-A-4-62772 is known. In this device, a lever having a cam groove is assembled in one housing, and a cam pin that can be engaged with the cam groove is projected from the other housing. The circumferential surface of the cam groove is provided with a straight face that forms an entrance to the cam pin and a curved face that gradually approaches the pivot shaft of the lever.
In order to fit the two housings, first, the two housings are provisionally fitted shallowly, and the cam pin is advanced to a position where it can move to the curved surface side of the cam groove. Thereafter, by turning the lever, the cam pin is moved along the curved surface of the cam groove, and the two housings are assisted by the cam action so as to be properly fitted.
[0003]
[Problems to be solved by the invention]
However, when the two housings are temporarily fitted, the fitting depth may be less than the normal depth, and even if the lever is rotated in this state, the cam pin is caught on the edge of the entrance, and the lever It becomes impossible to rotate. Therefore, in that case, it is necessary to perform a pivoting operation of the lever after the work of temporarily fitting both housings to the normal depth, and the assembling workability is not good.
The present invention has been completed based on the above circumstances, and an object thereof is to improve the assembly workability.
[0004]
[Means for Solving the Problems]
As a means for achieving the above object, the invention of claim 1 is such that a lever having a cam groove is rotatably mounted in one of the pair of housings that can be fitted to each other. On the other hand, the other housing is provided with a cam pin that can enter the cam groove. After the cam pin is inserted into the cam groove and the housings are temporarily fitted, the lever is moved from the initial position. As the cam pin is moved along the cam groove along with the rotation to the fitting position and the two housings are normally fitted by the cam action, the one housing has a locking portion. The lever is provided with an elastic locking piece capable of holding the lever in the initial position by being locked to the locking portion, whereas the other housing has the both housings. A release portion is provided that elastically deforms the elastic locking piece and dissociates from the locking portion as the ring is temporarily fitted, and the other housing has the elastic locking portion. A pressing portion capable of pressing the piece is provided on the rear side in the fitting direction with respect to the release portion, and at least one of the pressing portion and the elastic locking piece is properly attached when the both housings are temporarily fitted. As the temporary fitting depth is reached, the elastic locking piece is pressed by the pressing portion, thereby applying a component force along the rotation direction to the lever and moving the lever to the initial position. A feature is that a cam surface is provided that is displaced from the position to the fitting position side.
[0005]
According to a second aspect of the present invention, in the one according to the first aspect, an arc surface centering on a rotation axis of the lever is partially formed on the peripheral surface of the cam groove, The cam pins are brought into contact with each other when the two housings reach a proper temporary fitting depth during temporary fitting.
[0006]
According to a third aspect of the present invention, in the one according to the first or second aspect, the cam groove has a circumferential surface when the two housings reach a normal temporary fitting depth during temporary fitting. The cam pin can be restricted from entering the back of the cam groove by contacting the cam pin, while the cam pin moves to the back of the cam groove when the lever is rotated with a predetermined operating force. It has a feature in that a protrusion that allows entry is provided.
[0007]
[Action and effect of the invention]
<Invention of Claim 1>
When the two housings are temporarily fitted, the release state of the elastic locking piece is released from the locking portion and is elastically deformed, thereby releasing the holding state of the lever at the initial position. Thereafter, as the fitting further proceeds and reaches the normal temporary fitting depth, when the pressing portion presses the elastic locking piece, the cam surface causes a component force along the rotation direction with respect to the lever. The applied lever is displaced from the initial position to the fitting position. Thereafter, by turning the lever to the fitting position, the cam pin moves along the cam groove so that the cam action is exhibited and the two housings are properly fitted.
Based on the presence or absence of the lever displacement operation, it is possible to detect whether or not both housings have reached the proper temporary fitting depth. That is, if the displacement operation of the lever is confirmed at the time of temporary fitting, it is guaranteed that both connector housings have reached the normal temporary fitting depth. Therefore, the lever can be rotated immediately after the temporary fitting operation, and the assembly workability of the lever-type connector can be improved.
[0008]
<Invention of Claim 2>
When the two temporary housings reach the proper temporary fitting depth during temporary fitting, the cam pins abut against the arc surface of the cam groove, so that the cam pins are further restricted from entering further back. Even if the cam pin further enters the depth of the cam groove from the normal provisional fitting depth, while the cam pin is in contact with the arc surface, the fitting of both housings proceeds while the lever rotates. It is prevented.
[0009]
<Invention of Claim 3>
When both housings reach the normal temporary fitting depth, the cam pins abut against the protrusions, so that the cam pins are prevented from entering further into the cam groove. Thereby, the fitting depth of both housings can be accurately kept at a regular temporary fitting depth during temporary fitting. On the other hand, if the lever is rotated with an operating force of a predetermined level or more in order to properly fit both housings, the cam pin is allowed to pass over the protrusion and enter the back of the cam groove, and the lever is rotated. And both housings are properly fitted.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. In this embodiment, a lever-type connector having a waterproof function is illustrated. In general, the female housing 10 provided with the cam pins 13 is fitted to the male housing 20 in which the lever 50 provided with the cam groove 53 and the moving plate 40 provided with the seal member 44 are assembled. It is the composition which becomes. In the following, the fitting surface side of both housings 10 and 20 is referred to as the front, and the upper and lower descriptions are based on FIG. 1, FIG. 3, FIG.
[0011]
First, the female housing 10 will be described. The female housing 10 is made of synthetic resin, and is formed in a substantially block shape as shown in FIGS. 3 to 5, and a plurality of large and small types of female terminal fittings 15 can be inserted into the cavity 11 from the rear. Are arranged in a plurality of rooms. On the inner surface of each cavity 11, a lance 12 that protrudes from the female terminal fitting 15 by being elastically locked to the female terminal fitting 15 is projected. The female terminal fitting 15 is formed in a substantially box shape and is crimped and connected to a main body having an elastic contact piece (not shown) capable of elastically contacting the tab 33 of the male terminal fitting 32 and the end of the electric wire W. And a barrel part at the front and rear. The barrel portion is a pair of front and rear caulks that are caulked to the core wire exposed at the end of the electric wire W and the waterproof rubber plug 16 that is fitted to the end portion of the covering and can be in close contact with the inner peripheral surface of the cavity 11. It has a piece. A pair of cam pins 13 having a substantially columnar shape are provided so as to project at a substantially central position in the width direction on the upper and lower outer surfaces of the female housing 10. A pair of release portions 14 for elastically deforming the elastic locking pieces 55 of the lever 50 are provided on the left side of the cam pin 13 in FIGS. The front end surface of the release portion 14 is formed in a tapered shape so that the elastic locking piece 55 can easily ride on. On the rear side of the release portion 14, a pressing portion 17 that protrudes further outward in a stepped manner is coupled. The pressing portion 17 has the same width as the release portion 15 and is formed in a long and narrow block shape extending in the front-rear direction.
[0012]
The male housing 20 is made of synthetic resin, and as shown in FIGS. 1, 2, 4, and 5, a hood portion 22 projects forward from a terminal housing portion 21 having a substantially block shape, and a terminal. A protective wall 23 is connected to the upper and lower outer surfaces of the accommodating portion 21 and the hood portion 22 via a connecting wall 24, respectively. Among these, the lever 50 is assembled from the side inside the protective wall 23, and the moving plate 40 is assembled from the front in the hood portion 22. A plurality of cavities 25 in which a plurality of types of large and small types of male terminal fittings 32 can be inserted from behind are provided in the terminal accommodating portion 21 at positions aligned with the cavities 11 on the female housing 10 side. A lance 26 for preventing the male terminal fitting 32 from coming off is provided on the inner surface of each cavity 25 in the same manner as the female housing 10 side. The male terminal fitting 32 includes a tab 33 that protrudes into the hood portion 22 in order from the front side and has an elongated substantially plate shape, a substantially box-shaped main body portion, and a barrel portion that is crimped and connected to the end of the electric wire W. ing. The barrel portion is caulked to the core wire of the electric wire W and the waterproof rubber plug 34 in the same manner as the female terminal fitting 15.
[0013]
The moving plate 40 is made of synthetic resin, and is parallel to the front end surface of the terminal accommodating portion 21 and has a plate-like plate main body 41. The moving plate 40 protrudes forward from the outer periphery of the plate main body 41 and the hood portion 22. It is the structure which formed integrally the guide cylinder part 42 made slidable with respect to an internal peripheral surface. A plurality of tab insertion holes 43 through which the tabs 33 of the male terminal fittings 32 can be inserted are formed in the plate body 41 so that the tabs 33 can be positioned in the radial direction. A rubber seal member 44 is integrally provided on the guide tube portion 42. The seal member 44 is provided along the outer periphery of the rear end portion of the guide tube portion 42 and can be in close contact with the inner peripheral surface of the hood portion 22, and the outer periphery of the inner periphery of the guide tube portion 42. It consists of an inner peripheral side seal portion 46 that is provided at a position in front of the side seal portion 45 and that can be in close contact with the outer peripheral surface of the female housing 10, and both the seal portions are connected to each other via a connection hole. The moving plate 40 has an initial position (FIG. 4) in which the plate main body 41 is separated from the terminal accommodating portion 21 and the tip end portion of the tab 33 is inserted into the tab insertion hole 43, and the front end surface of the terminal accommodating portion 21. Between the fitting position (FIG. 14) in which the base portion of the tab 33 is inserted into the tab insertion hole 43 in conjunction with the turning operation of the lever 50 and the fitting operation of the female housing 10. It is possible to move to.
[0014]
The lever 50 is made of a synthetic resin, and has a substantially gate shape as a whole by connecting the end portions of the pair of arm portions 51 with the operation portion 52. Both arm portions 51 are provided with cam grooves 53, which will be described later in detail. The lever 50 inserts both arm portions 51 between the terminal accommodating portion 21 and the hood portion 22 and the protective wall 23 from the left side of FIGS. 2 and 4 (right side of FIG. 1). A shaft pin 27 projecting from the substantially center position in the rear width direction of the rear portion of the hood portion 22 toward the protective wall 23 is fitted into the shaft hole 54 formed near the end portion on the side opposite to the operation portion 52. Thus, the shaft pin 27 is pivotally supported around the shaft pin (rotation shaft).
[0015]
The lever 50 has an initial position (FIG. 4) where the entrance of the cam groove 53 faces forward and can receive the cam pin 13 and a fitting position where the rear end of the cam groove 53 is arranged immediately before the shaft pin 27 (FIG. 4). 14), and the cam pins 13 that have entered the cam groove 53 in accordance with this turning movement are moved along the cam groove 53, so that the housings 10 and 20 are fitted and detached. Operation is encouraged. In this turning process, the protective wall 23 restricts the arm portion 51 from opening and deforming. The hood portion 22 has a cam pin entry allowance groove 28 that allows the cam pin 13 to enter, and a release portion entry allowance groove 29 that allows the release portion 14 to enter, respectively. Is formed. Further, the front end portion of the connecting wall 24 is cut out by a predetermined width in accordance with the cam pin entry allowance groove 28.
[0016]
Here, the shape of the cam groove 53 will be described in detail. The left and right circumferential surfaces of the cam groove 53 are formed in a substantially straight shape and a straight face 53a that forms an entrance to the cam pin 13, and is formed in a substantially spiral shape that gradually approaches the shaft hole 54. The extrudable curved surface 53b is connected via an arc surface 53c concentric with the shaft pin 27. Of the two true faces 53a, the left true face 53aL is set longer than the right true face 53aR, and the difference is set to be slightly larger than the diameter of the cam pin 13. A protrusion 53d having a mountain shape is provided between the left arc surface 53cL and the curved surface 53bL.
[0017]
A cantilevered elastic locking piece 55 that can be elastically deformed up and down is formed at a position closer to the operation portion 52 than the shaft hole 54 in the arm portion 51. The elastic locking piece 55 is formed to extend in a direction substantially along the rotation direction of the lever 50 (direction intersecting with the fitting direction of the housings 10 and 20), and protrudes inward at the tip thereof. A flange 56 is provided (FIGS. 1 and 6). The flange portion 56 is formed in a substantially block shape whose width dimension is larger than that of the elastic locking piece 55, and enters the release portion entry allowance groove 29 to the locking portion 30 provided at the periphery thereof. Thus, the locking surface 56a facing diagonally to the left in FIG. 5 can be locked, whereby the lever 50 is held at the initial position. The pressed surface 56b of the collar portion 56 facing diagonally right forward is made pressable from the front by the pressing portion 17 of the female housing 10, and forms an end surface substantially orthogonal to the extending direction of the elastic locking piece 55, in other words. And the inclined surface which cross | intersects the fitting direction of both the housings 10 and 20 and the rotation direction of the lever 50 is comprised. A pressing portion entry allowing recess 58 that allows the pressing portion 17 to enter is formed in the inner surface of the arm portion 51 around the flange portion 56 so as to open forward and rightward in FIG. 1 and 6). Further, the inner edge of the hook portion 56 on the side of the locking surface 56a is cut away, so that the pressed surface 56b has a larger area than the locking surface 56a (FIG. 6). In addition, a lock protrusion 57 is provided on the surface of the operation portion 52 that faces the male housing 20, and protrudes from the facing surface on the male housing 20 side as the lever 50 is rotated to the fitting position. The lever 50 can be held in the fitting position by being engaged with the lock 31 (FIG. 14).
[0018]
When the two housings 10 and 20 are fitted, a temporary fitting operation for fitting the two housings 10 and 20 to a predetermined depth (regular temporary fitting depth) before the lever 50 is rotated. Doing business. At the time of this temporary fitting, the release portion 14 entering the release portion entry groove 29 is engaged with the front inner edge of the flange portion 56, and the elastic locking piece 55 is guided outward while being guided by the tapered surface of the release portion 14. While being elastically deformed, the locking surface 56a of the collar portion 56 is dissociated from the locking portion 30 (FIG. 9). As the fitting further proceeds, the pressed surface 56b of the flange portion 56 is pressed by the pressing portion 17 that has entered the pressing portion entry allowing recess 58, so that the elastic locking piece 55 is elastically deformed. A component force along the rotation direction of the lever 50 is applied, so that the lever 50 is rotated and displaced from the initial position to the fitting position side. In other words, the pressing force from the pressing portion 17 is converted into a force for rotating the lever 50 by the cam function of the pressed surface 56b that is an inclined surface. When the lever 50 is rotated from the initial position to the fitting position side, the operation portion 52 is spaced apart from the outer surface of the hood portion 22 and protrudes to the side, so that the lever 50 can be clearly visually recognized from the outside.
[0019]
When both the housings 10 and 20 reach the proper temporary fitting depth, the cam pin 13 abuts on the left circular arc surface 53cL, so that the cam pin 13 is further restricted from entering further back (see FIG. 10). And FIG. 11). Even if the cam pin 13 further enters from this state, while the cam pin 13 is in contact with the arcuate surface 53cL, the lever 50 is merely pivoted and the fitting of the housings 10 and 20 does not proceed. The normal temporary fitting depth is maintained. When the lever 50 is rotated to a predetermined position, the cam pin 13 abuts against the protrusion 53d, whereby the lever 50 is further rotated and the cam pin 13 is restricted from being relatively displaced toward the curved surface 53b ( 12 and 13). Since this protrusion 53d is formed in a mountain shape whose both side surfaces are inclined, the cam pin is rotated from the temporarily fitted state to the fitting position side while applying an operating force more than a predetermined value to the lever 50. 13 is allowed to move over the protrusion 53d and be relatively displaced toward the curved surface 53b.
[0020]
The present embodiment has the above-described structure, and the operation thereof will be described subsequently. First, as shown in FIGS. 4 and 5, each female terminal fitting 15 is accommodated in the female housing 10, while each male terminal fitting 32 is accommodated in the male housing 20, and the moving plate 40 and the lever 50 are respectively in the initial positions. Then, the female housing 10 is fitted into the hood portion 22 of the male housing 20. Then, the cam pin 13 enters the entrance of the cam pin entry allowance groove 28 and the cam groove 53, the release portion 14 enters the release portion entry allowance groove 29, and the pressing portion 17 enters the press portion entry allowance recess 58. Each enters.
[0021]
As shown in FIGS. 7 and 8, when the cam pin 13 is disposed between the two facing faces 53 a, the release portion 14 is engaged with the inner edge of the front portion of the flange portion 56 of the elastic locking piece 55. As shown in FIG. 9, the hook 56 is guided by the taper surface of the release portion 14 and rides on the release portion 14 so that the elastic locking piece 55 is elastically deformed outward and the locking surface 56 of the hook 56 is locked. The lever 50 is disengaged and the lever 50 is released. At this time, the pressing portion 17 that has entered the pressing portion entry allowing recess 58 has reached a position that approaches or comes into contact with the pressed surface 56b of the flange portion 56 of the elastic locking piece 55 in a state of being elastically deformed. Then, when the fitting further proceeds from the state in which the pressing portion 17 is in contact with the pressed surface 56b of the flange portion 56, the pressed surface 56b of the flange portion 56 is pressed by the pressing portion 17, thereby the pressed surface 56b. Due to this inclination, a component force along the rotational direction is applied to the lever 50, and the lever 50 is gradually rotationally displaced from the initial position to the fitting position side.
[0022]
When both the housings 10 and 20 reach the proper temporary fitting depth, as shown in FIGS. 10 and 11, the lever rotates to a predetermined position and the cam pin 13 comes into contact with the left arc surface 53cL. Thus, it is detected that both housings 10 and 20 have been properly provisionally fitted when the lever 50 is pivotally displaced from the initial position. In this regular temporary fitting state, the front end surface of the female housing 10 is in contact with or close to the front end surface of the moving plate 40, but the terminal fittings 15 and 32 are still in a non-contact state. In this temporarily fitted state, the right arcuate surface 53cR is disposed behind the cam pin 13 with a predetermined interval. Therefore, even if the two housings 10 and 20 are separated, the cam pin 13 remains on the right arcuate surface 53cR. The detachment operation is regulated by being caught in the.
[0023]
When both the housings 10 and 20 reach the regular temporary fitting depth, the cam pin 13 is in contact with the arc surface 53cL. As a result, the movement of the cam pin 13 further entering the back of the cam groove 53 is restricted to some extent. However, even if the female housing 10 is further pushed in from this state, for example, the cam pin 13 enters the back. Is in contact with the arc surface 53cL, the lever 50 is rotationally displaced toward the fitting position without exhibiting the cam function, and the fitting of the housings 10 and 20 does not proceed. Therefore, both the housings 10 and 20 are kept at a regular temporary fitting depth, and both the terminal fittings 15 and 32 are kept in a non-contact state. When the lever 50 further rotates, as shown in FIGS. 12 and 13, the cam pin 13 is brought into contact with the protrusion 53d and is caught so that the lever 50 is further prevented from being rotationally displaced. As a result, the cam pin 13 is prevented from entering the curved surface 53b side of the cam groove 53, and both the housings 10 and 20 are securely held at the proper temporary fitting depth.
[0024]
In the process in which both the housings 10 and 20 are properly provisionally fitted, the inner peripheral side seal portion 46 is brought into close contact with the outer peripheral surface of the female housing 10, so that the fitting resistance increases. Although it is difficult to perceive the fitting depth of the housings 10 and 20, the fitting depth can be easily determined by visually observing the rotational displacement of the lever 50 from the initial position.
[0025]
When the two housings 10 and 20 are fitted to the proper temporary fitting depth as described above, the operating portion 52 is grasped and the lever 50 is moved to the fitting position with an operating force of a predetermined level or more. Rotate counterclockwise. Then, as the lever 50 rotates, the cam pin 13 moves over the protrusion 53d and relatively displaces toward the back of the curved surface 53b. In the turning process, the cam action is exerted by the cam pin 13 being drawn by the right curved surface 53bR, and the female housing 10 is drawn into the back of the male housing 20 together with the moving plate 40, and the fitting proceeds. Then, as shown in FIG. 14, when the lever 50 is rotated to the fitting position, the cam pin 13 reaches the back end position of the cam groove 53, and both the housings 10 and 20 are normally fitted to each other. 15 and 32 are conductively connected. Further, the lock projection 57 of the operation portion 52 engages with the lock portion 31, so that the lever 50 is held so as not to rotate from the fitting position. On the other hand, when removing both the fitted housings 10 and 20, the cam pin 13 is pushed out by the left curved surface 53bL by rotating the lever 50 in the clockwise direction in FIG. 14 from the fitting position to the initial position. And the housings 10 and 20 are separated.
[0026]
Further, in this lever-type connector, both terminal fittings 15 and 32 are set to be non-contact / not connected at the time of temporary fitting, and both terminal fittings 15 and 32 are set to be conductively connected at the time of normal fitting. If the continuity inspection between the terminal fittings 15 and 32 is performed after the operation, it is possible to detect whether or not the lever 50 has been rotated based on the presence or absence of continuity.
[0027]
As described above, according to the present embodiment, the pressed surface 56b of the flange portion 56 is pressed by the pressing portion 17 as both the housings 10 and 20 are fitted to the regular temporary fitting depth. Thus, a component force in the rotational direction is applied to the lever 50, and the lever 50 is rotationally displaced from the initial position to the fitting position side. That is, when the two housings 10 and 20 are temporarily fitted, it is possible to detect whether or not the two housings 10 and 20 have reached the normal temporary fitting depth based on the presence or absence of the displacement operation of the lever 50. . That is, if the displacement operation of the lever 50 is confirmed at the time of provisional fitting, it is guaranteed that both housings 10 and 20 have reached the regular provisional fitting depth. Therefore, the lever 50 can be rotated immediately after the temporary fitting operation. In other words, the lever rotating operation is performed despite the insufficient fitting depth at the time of temporary fitting as in the prior art. Thus, it is possible to avoid such a situation and to improve the assembly workability of the lever type connector.
[0028]
Moreover, since the collar portion 56 has both a locking surface 56a for the locking portion 30 and a pressed surface 56b for the pressing portion 17, for example, the pressed portion that is pressed by the pressing portion separately from the flange portion, for example. The structure of the lever-type connector can be simplified as compared with the case where the portion is provided exclusively.
[0029]
Furthermore, when the housings 10 and 20 reach the proper temporary fitting depth, the cam pin 13 abuts against the arc surface 53cL of the cam groove 53, so that the cam pin 13 is further restricted from entering further back. The Even if the cam pin 13 further enters the back of the cam groove 53 from the normal temporary fitting state, the lever 50 rotates while the cam pin 13 is in contact with the arc surface 53cL, but the cam function is exhibited. Not. Therefore, the fitting of both housings 10 and 20 does not proceed, and both terminal fittings 15 and 32 accommodated in both housings 10 and 20 can be kept in a non-contact state. Further, even if the lever 50 is rotated, the cam pin 13 abuts against the protrusion 53d, so that the further inward movement is restricted. Thereby, the fitting depth of both the housings 10 and 20 can be accurately kept at a regular temporary fitting depth at the time of temporary fitting. On the other hand, when the lever 50 is rotated with an operating force of a predetermined value or more in order to properly fit both the housings 10 and 20, the cam pin 13 is allowed to get over the protrusion 53d and enter the back of the cam groove 53. Is done.
[0030]
<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 above-described embodiment, the cam groove provided with the protrusion is shown, but the protrusion is omitted and the arc surface forming range is appropriately expanded. . On the contrary, the present invention also includes a configuration in which the circular arc surface is omitted and the protrusions are provided at positions where both the housings reach the regular temporary fitting depth and are immediately hooked on the cam pins.
[0031]
(2) In the above-described embodiment, the elastic locking piece extends substantially along the rotation direction of the lever. However, for example, the elastic locking piece extends along the front-rear direction or the width direction. In this embodiment, the pressing surface of the flange portion is formed in a tapered shape so as to be inclined with respect to the fitting direction of both housings and the rotation direction of the lever, so that the pressing force from the pressing portion can be You may make it act as a component force along a moving direction, and such a thing is also contained in this invention.
(3) In the above-described embodiment, the pressing surface of the collar portion is an inclined surface with respect to the pressing portion. However, other than that, for example, a curved surface may be provided. If the cam function which gives the component force along a rotation direction with respect to a lever by this is demonstrated, the shape can be set arbitrarily.
[0032]
(4) In the above-described embodiment, the lever is assembled to the male housing and the cam pin is provided to the female housing. Conversely, the present invention is also applied to the one in which the lever is assembled to the female housing and the cam pin is provided to the male housing. Is applicable.
(5) In the above-described embodiment, the waterproof function and the moving plate are shown. However, the present invention can be applied to a non-waterproof type or a moving plate.
[Brief description of the drawings]
FIG. 1 is a front view of a male housing according to an embodiment of the present invention.
FIG. 2 is a plan view of a male housing.
FIG. 3 is a front view of a female housing.
FIG. 4 is a plan sectional view showing a state before both housings are fitted, and is partially cut off at a cavity portion;
FIG. 5 is a plan view showing a state before the two housings are fitted, with the protective wall removed.
6 is an enlarged side cross-sectional view of the main part in FIG.
FIG. 7 is a plan view showing a state in which both housings are temporarily fitted and partially cut at a cavity portion
FIG. 8 is a plan view showing a state in which both housings are temporarily fitted, with the protective wall removed.
9 is an enlarged side cross-sectional view of the main part in FIG. 8;
FIG. 10 is a cross-sectional plan view showing a state where both housings have reached a normal temporary fitting depth, and is partially cut at a cavity portion;
FIG. 11 is a plan view showing a state in which both housings have reached a regular provisional fitting depth, with a protective wall removed.
FIG. 12 is a cross-sectional plan view in which both the housings are in a state in which only the lever is rotated with the normal provisional fitting depth, and is partially cut off at the cavity portion;
FIG. 13 is a plan view showing a state in which only the lever is rotated while both housings are in the proper temporary fitting depth, and the protective wall is removed.
FIG. 14 shows a state in which both housings are properly fitted, and is a cross-sectional plan view partly cut at a cavity portion
[Explanation of symbols]
10: Female housing (the other housing)
13 ... Cam pin
14 ... Release part
17 ... Pressing part
20 ... Male housing (one housing)
30 ... Locking part
50 ... Lever
53 ... Cam groove
53cL ... Circular arc surface
53d ... Projection
55. Elastic locking piece
56b ... Pressed surface (cam surface)

Claims (3)

Of the pair of housings that can be fitted to each other, a lever having a cam groove is rotatably mounted in one housing, whereas a cam pin that can enter the cam groove is provided in the other housing. And
After the cam pin is inserted into the cam groove and the housings are temporarily fitted, the cam pin moves along the cam groove as the lever is rotated from the initial position to the fitting position. In the case where the two housings are normally fitted by the cam action,
The one housing is provided with a locking portion, and the lever is provided with an elastic locking piece capable of holding the lever in the initial position by locking the locking portion. The other housing is provided with a release portion that elastically deforms the elastic locking piece and dissociates from the locking portion as both the housings are temporarily fitted.
Further, the other housing is provided with a pressing portion capable of pressing the elastic locking piece on the rear side in the fitting direction with respect to the release portion, and at least one of the pressing portion and the elastic locking piece. When the both housings reach the normal temporary fitting depth during temporary fitting, the elastic locking piece is pressed by the pressing portion in the rotational direction with respect to the lever. A lever-type connector characterized in that a cam surface is provided that applies a component force along the axis and displaces the lever from the initial position to the fitting position side. A circular arc surface centering on the rotation axis of the lever is partially formed on the circumferential surface of the cam groove, and a normal temporary fitting depth when the both housings are temporarily fitted to the circular arc surface. 2. The lever-type connector according to claim 1, wherein the cam pin is brought into contact with each other when reaching the position. The cam groove can be prevented from entering the cam groove by contacting the cam pin when the both housings reach a normal temporary fitting depth during temporary fitting on the peripheral surface of the cam groove. On the other hand, a protrusion is provided that allows the cam pin to enter the back of the cam groove when the lever is rotated with an operation force greater than a predetermined value. The lever type connector according to claim 1 or 2.

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