JP3087633B2 - ID connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a press-connecting connector for connecting an electric wire to a terminal fitting by press-fitting.

[0002]

2. Description of the Related Art As this type of press-connecting connector, for example, a connector disclosed in Japanese Utility Model Laid-Open No. 6-54214 is known.
This is a configuration in which a plurality of terminal fittings 2 are arranged in two rows in a connector housing 1 as shown in FIG. Among the terminal fittings 2, a fitting connection portion that is fitted and connected to a mating connector is positioned so as to protrude into the connector housing 1 (not shown), and is a press-fit connection to which the electric wire 3 is pressed. The portion 2a projects outward from the back surface of the connector housing 1 as shown in the figure.

In order to connect the electric wire 3 in this configuration,
The electric wire 3 is simply press-fitted into the slit of the press-connecting portion 2a, the engaging hole 4a is engaged with the locking projection 1a, and the cover 4 is mounted on the connector housing 1 (see FIG. 14). Then, since the press-connecting connection portion 2a of the terminal fitting 2 breaks through the insulating coating of the electric wire 3 and is connected to the core wire, there is an advantage that a troublesome process such as peeling of the electric wire and crimping of the terminal fitting becomes unnecessary.

[0004]

However, in this type of connector, the cover 4 attached to the connector housing 1 is not provided.
Is important for quality. This is because if the electric wire 3 is pulled and the cover 4 is detached, the holding force of the electric wire 3 is weakened. However, in general, the cover 4 tends to have an elongated shape in accordance with the shape of the connector housing 1, so that the rigidity tends to decrease. For this reason,
If both ends in the longitudinal direction are locked to the connector housing 1, there is a problem that when the electric wire 3 is pulled, the intermediate portion bends and deforms and floats, and the holding force of the electric wire 3 is reduced. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a press-connecting connector capable of preventing the cover from being deformed and deformed to increase the holding force of the electric wire.

[0006]

[Means for Solving the Problems and Functions / Effects]

<Invention of Claim 1> In a press-connecting connector according to the present invention, a connector housing is provided with a terminal fitting having a press-fitting slit for wire press-fitting, and a cover for covering the wire pressed into contact with the terminal fitting is provided. In the connector housing which is detachably attached to the connector housing, the connector housing has a partially recessed housing recess, and the cover has a recessed cover recess aligned with the housing recess. It is characterized by

[0007] According to the above configuration, since the cover is provided with the cover recess, the rigidity of the cover is increased at that portion, and bending deformation is suppressed. As a result, falling off from the connector housing due to deformation of the cover is reliably prevented,
The holding force of the electric wire can be sufficiently increased.

<Invention of claim 2> In the press-connecting connector according to the invention of claim 2, in the invention of claim 1, a locking mechanism for mounting the cover to the connector housing is also provided in the housing recess and the cover recess. There is a characteristic in the place where it is provided.

With this configuration, there is obtained an advantage that the locking force of the cover is further increased and the function of preventing the deformation is further enhanced.

<Invention of Claim 3> In the press-connecting connector according to the invention of Claim 3, the housing recess and the cover recess are provided at positions corresponding to a lock mechanism for locking a fitted state with a mating connector. It has features. In this configuration, since the lock mechanism with the mating connector can be arranged by using the two recesses for increasing the rigidity, there is an advantage that the recess can be reduced in size as a whole without wasting.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION

<First Embodiment> Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows male and female connectors 10 and 20, of which the male connector 20 depicted on the left is configured as a press-connecting connector according to the present invention. Here, the female connector 10 drawn on the right side has a plurality of cavities 1 in which female terminal fittings (not shown) are caulked and fixed to the ends of a large number of electric wires 11, and the terminal fittings are formed in the connector housing 12.
3 is a type configured to be housed inside. Although the number of the cavities 13 of the connector housing 12 can be set variously, in this embodiment, a total of nine cavities 1 are provided.
3 are arranged in two upper and lower stages. More specifically, in the lower stage, six cavities 13 are formed in one horizontal row, and in the upper stage, two cavities 13 are formed on the left side and one cavity on the right side.
A recess 14 is formed in the upper surface of the center, and the cavity 13 is arranged only in the lower part of the recess. This recess 1
4, a lock arm 16 having a front end supported by a leg 15 is integrally protruded, a locking projection 17 is protruded from an upper surface of the lock arm 16, and a pressing operation portion is provided at a rear free end. 18 are provided.

On the other hand, the connector housing 21 of the male connector 20 has a rectangular tube-shaped hood portion 22 at a front portion (the female connector 10 side) and a terminal housing portion 23 at a rear portion. A tab 41 of a terminal fitting 40 to be described later projects into the hood section 22. The female connector 10 is fitted into the hood section 22, and the terminal fitting is fitted and connected to the tab 41. An engagement hole 24 is formed on the upper surface of the hood portion 22 to engage with a locking projection 17 protruding from the lock arm 16 of the female connector 10, so that the fitting state with the female connector 10 can be established. A lock mechanism for locking is configured.

The terminal accommodating portion 23 has an outer shell which is generally wider in width than the hood portion 22 and has a thin rectangular tube shape, and has a rectangular groove at a position on the upper surface corresponding to the lock mechanism. A housing recess 25 which is depressed in a shape is formed. A total of 15 cavities 28 are formed in upper and lower two stages inside the terminal accommodating portion 23 via a horizontal partition 26 and a number of vertical partitions 27, and a total of 9 cavities are arranged in a horizontal row in a lower stage,
In the upper part, four are arranged on the left side of the housing recess 25 and two are arranged on the right side. On the upper and lower surfaces and the vertical partition 27 of the terminal accommodating portion 23, there are formed wire insertion slits 29 corresponding to the respective cavities 28 and opened at the rear edge and extending forward. It can be inserted.

A cover 3 is provided behind the terminal accommodating portion 23.
0 can be attached. The cover 30 is connected to the terminal housing 2.
And a surrounding wall portion 31 which covers the rear end surface of the terminal housing 3 and surrounds the outer periphery of the terminal accommodating portion 23 through a gap through which the electric wire 50 can be inserted. The surrounding wall portion 31 conforms to the outer shell shape of the terminal accommodating portion 23, and a cover concave portion 32 which is depressed in a rectangular groove shape is formed at a position corresponding to the housing concave portion 25 of the terminal accommodating portion 23. Further, two engagement holes 33 are formed on both left and right sides of the surrounding wall portion 31, respectively.
Locking projections 2 formed on both left and right side surfaces of the first terminal accommodating portion 23
An engaging mechanism for fixing the cover 30 to the connector housing 21 by engaging with the connector housing 21 is constituted. As shown in FIGS. 8 and 9, a large number of reinforcing ribs 34 are protruded from the cover 30, and pressing protrusions 35 protruding toward the press-contacting connection portion 43 of the terminal fitting 40 are protruded from the cover 30. Further, in the housing recess 25 of the connector housing 21,
Also, two locking projections 25a are protruded, and an engaging projection 36a that engages with the locking projection 25a is formed on the reinforcing rib 34 located on the bottom rear surface of the cover recess 32 of the corresponding cover 30. And a locking mechanism is also configured. Also, as shown in FIG. 5, two locking projections 23b are protruded almost at the center of the bottom surface of the terminal accommodating portion 23, and the reinforcing ribs 34 inside the bottom surface of the surrounding wall 31 of the cover 30 are provided.
An engagement protrusion 36b (see FIG. 8) is formed on the upper part, and eventually, the cover 30 is engaged with the connector housing 21 at four places on the left, right, upper and lower sides of the surrounding wall 31. As shown in FIG. 5, a support projection 37 projects downward from the bottom surface of the hood 22 of the connector housing 21, and a pair of elastic pieces 38 are located on both left and right sides thereof.
And a locking piece 39 are provided opposite to each other in upper and lower stages,
For example, the connector housing 21 can be fixed to a back panel provided in a trunk room of a vehicle.

Now, the terminal fitting 40 will be described in detail. As described above, this is a tab 41 which is a fitting connection portion which is fitted and connected to the terminal fitting of the mating female connector 10.
And a press-connecting portion 43 is integrally provided at the opposite end thereof.
Two press-contact slits 42 are opened rearward to press-contact an electric wire 50 extending in a direction orthogonal to the extension direction. In this embodiment, three types of terminal fittings 40A,
40B and 40C are used, each of which includes a tab 41 and a press-connecting connection portion 43, but the shape of the intermediate portion is different. The terminal fitting 40A is connected to the tab 41 and the press-connecting connection part 43.
Are connected in a straight line, and the terminal fitting 40B is connected in such a manner that an intermediate portion thereof is laterally shifted by one cavity 28. That is, the tab 41 of the terminal fitting 40B and the press-connecting connection part 43 are
A lateral shift portion 44 is formed which is displaced in a direction (lateral direction) orthogonal to both the extension direction of the terminal 0 and the extension direction of the terminal fitting 40. Further, the terminal fitting 40C also has a lateral shift portion 44 formed between the tab 41 and the press-connecting connection portion 43,
It is offset laterally by two of the cavities 28.

The above three types of terminal fittings 40A, 40B, 4
0C is inserted and arranged as shown in FIG. That is, referring to FIG. 6, which shows the male connector viewed from the front, the tabs 41 of the terminal fitting 40 are vertically aligned (extending direction of the electric wire 50) in the two rows on the right side and the leftmost row. The other parts are arranged only in the lower stage. This arrangement state naturally corresponds to the arrangement state of the cavity 13 of the female connector 10 and thus the female terminal fitting. On the other hand, as shown in FIG. 5, each of the press-connecting portions 43 is connected to the four rows of cavities 28 on the left side.
Are arranged alternately up and down (in a staggered pattern), and the press-connecting connection portions 43 are also arranged alternately up and down for the two rows of cavities 28 on the right side. Such a difference between the arrangement state of each tab 41 and the arrangement state of the press-connecting connection part 43 is caused by the existence of the lateral shift part 44 of the terminal fitting 40, and details thereof are as shown in FIG. In the figure, the grid pattern on the right shows the arrangement of the tabs 41, and the grid pattern on the left shows the cavity 2
8 are shown, and the press-connecting portion 43 of the terminal fitting 40 is shown.
Are indicated by hatching. As a result of such an arrangement, the two terminal fittings 40 in which the tabs 41 are arranged in the extending direction (vertical direction) of the electric wire 50.
Are arranged so that the press-connecting portions 43 do not overlap in the extension direction of the electric wire 50. Note that the terminal housing portion 23 of the connector housing 21 has
7, a slit 27a for inserting the laterally displaced portion 44 of the terminal fitting 40 is formed from the open end of the cavity 28 toward the back. Can be accommodated. The terminal fitting 40 inserted into the cavity 28 is fixed to the connector housing 21 by pressing the tab 41 into the rear wall of the hood 22 as shown in FIG. further,
In the lower third cavity 28 from the left, the press-contacting connection portion 43 of the terminal fitting 40B having the laterally shifted portion 44 shifted by one pitch is accommodated, and the laterally shifted portion shifted by two pitches is located in the back. Tab 41 of terminal fitting 40C having 44
Are located (see FIG. 5). Therefore, in this embodiment, as shown in FIG.
The terminal fittings 40B and 40C are reliably insulated.

The procedure for assembling the male connector 20 is as follows. Each cavity 2 of connector housing 21
A required terminal fitting 40 is accommodated in 8 and fixed by press-fitting. Here, the arrangement state of the press-connecting connection portion 43 of each terminal fitting 40 is shown in FIG.
It becomes as shown in. On the other hand, for example, nine insulated wires 50 are arranged and fixed in parallel at a predetermined pitch on a reinforcing tape, and these are collectively addressed to the rear end face of the terminal accommodating portion 23 of the connector housing 21 and are pressed by a press machine. Each electric wire 50
Is pressed into the press contact slit 42 of the press connection portion 43. Then, each of the press-connecting portions 43 breaks through the insulating coating of the electric wire 50 and is connected to the core wire.
0, the connection of the electric wire is completed, and finally, the cover 30 is mounted on the terminal accommodating portion 23 of the connector housing 21 to complete the assembly (see FIG. 12). The cover 30 is provided with engaging projections 23 a, 23 b, 25 a protruding from the outer periphery of the terminal accommodating portion 23 of the connector housing 21.
In addition, the engagement projections 36a and 36b engage with each other and are fixed to the connector housing 21, and in this state, the pressing projection 35 of the cover 30 pushes the electric wire 50 into the press-contact slit 42.

As described above, in the male connector 20 of this embodiment, the press-connecting connection portions 43 of the terminal fittings 40 are staggeredly housed in the cavities 28 arranged in rows and columns. The width dimension tends to be larger than the hood portion 22. Therefore, the cover 30 also has an elongated shape in accordance with the shape of the connector housing 21, and the rigidity tends to decrease. However, in the present embodiment, since the housing recess 25 and the cover recess 32 are formed in the connector housing 21 and the cover 30, the rigidity of the cover 30 is increased at the cover recess 32, and the bending deformation thereof is suppressed. As a result, detachment from the connector housing 21 due to deformation of the cover 30 is reliably prevented, and
Consequently, the holding force of the electric wire 50 can be kept high. Moreover, in the present embodiment, the locking projection 25a and the engagement projection 36a are formed in the housing recess 25 and the cover recess 32, and the cover 30 is also locked here. Can be more reliably prevented. In forming the housing recess 25 and the cover recess 32, the female connector 10
Since the lock mechanism that locks the fitting state with
The hollow portion can be used effectively, and the whole can be reduced in size.

<Other Embodiments> The present invention is not limited to the embodiments described above and illustrated in the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition to the following, various changes can be made without departing from the scope of the invention.

(1) In the above embodiment, the terminal fitting 40 is provided with the tab 41 connected to the mating female connector. On the contrary, the female fitting connection portion connected to the tab is described. Alternatively, the lateral shift portion may be formed on the terminal fitting having the above.

(2) In the present invention, the number of poles of the connector can be freely set.

[Brief description of the drawings]

FIG. 1 is an overall exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the male connector taken along the line II-II in FIG.

FIG. 3 is a sectional view of the male connector, also taken along the line III-III in FIG.

FIG. 4 is a plan view of the male connector.

FIG. 5 is a front view of the male connector.

FIG. 6 is a front view of the same male connector.

FIG. 7 is a schematic perspective view showing the types and arrangements of terminal fittings.

FIG. 8 is a front view of the cover.

9 is a sectional view of the cover, taken along the line VIII-VIII in FIG. 8;

FIG. 10 is a rear view of the cover.

11 is a cross-sectional view along the line XI-XI in FIG.

FIG. 12 is a perspective view of the male connector with the cover attached.

FIG. 13 is an exploded perspective view showing a conventional structure.

FIG. 14 is a perspective view showing a conventional press-connecting connector with a cover attached.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Female connector 13, 28 ... Cavity 20 ... Male connector 21 ... Connector housing 22 ... Hood part 23 ... Terminal accommodating part 25 ... Housing recess 30 ... Cover 32 ... Cover recess 40 ... Terminal metal fitting 41 ... Tab 43 ... Pressure contact connection Part 44: Lateral shift part 50: Electric wire

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01R 13/42 H01R 4/24

Claims (3)

(57) [Claims] A connector housing provided with a terminal fitting having a press-contact slit for press-connecting an electric wire;
A cover for covering an electric wire pressed into contact with the terminal fitting is detachably attached to the connector housing, wherein the connector housing is formed with a housing recess partly depressed, and the cover has A press-connecting connector, wherein a cover recess depressed in accordance with the housing recess is formed. 2. The locking mechanism for mounting the cover on the connector housing is also provided in the housing recess and the cover recess.
The crimping connector described. 3. The pressure contact according to claim 1, wherein the housing recess and the cover recess are provided at positions corresponding to a lock mechanism for locking a fitted state with a mating connector. connector.