JPH08298150A - Connector - Google Patents

Abstract

PURPOSE: To prevent oscillation of a connecting terminal in a housing. CONSTITUTION: A rear holder 14 is engaged with a rear part of a housing 13, so that a locking lance 58 of the rear holder 14 has a width to come into contact with a partitioning plate of a terminal receiving chamber 32. A terminal pressing part 61, advanced into a space between a lower surface of a terminal connecting part 21 of a connecting terminal 12 and an upper surface of a lance support base 37b, and a terminal lock part 62, locking the terminal connecting part 21, are provided to form a guide groove 63 of guiding a stabilizer piece 22 opposed to the right/left rearward the terminal connecting part 21, in both side surfaces of the lock lance 58. The terminal connecting part 21 is locked by the terminal lock part 62 to regulate rearward movement of the connecting terminal 12, and a leading edge of the stabilizer piece 22 is stopped by a front wall of the guide groove 63 to regulate forward movement of the connecting terminal 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector, which is used for electric wiring of, for example, an automobile and has a rear holder for locking a connection terminal housed in a housing.

[0002]

2. Description of the Related Art In a conventional connector of this type, a rear holder is engaged with a rear portion of a housing so as to be movable back and forth, and the rear holder has a temporary locking position inserted halfway and a fully locking position fully pushed. In some cases, the housing may be engaged with. This is because if the rear holder is installed after the connection terminals are housed in the housing, the electric wires connected to the connection terminals must be individually inserted into the rear holder. This is to pass it.

Further, the locking lance for locking the connection terminal housed in the housing may be provided integrally with the rear holder instead of being provided in the housing. In this case, the locking lance can be easily molded, and the locking lance which is relatively durable and requires an expensive material is provided on the rear holder that requires a small amount of resin, so that the cost is low as a whole.

[0004]

However, in this conventional connector, since the locking lance is formed in a shape that restricts the rearward movement of the connection terminal, the connection terminal is moved forward during temporary locking. When pushed, there is a problem in that the locked state of the locking lance and the connection terminal is easily broken.

An object of the present invention is to solve the above problems and to provide a connector which can always secure a stable locked state between the locking lance and the connection terminal.

[0006]

To achieve the above object, a connector according to the present invention has a housing for accommodating a connection terminal in a terminal accommodating chamber, and a rear portion of the housing for engaging the connection terminal. A rear holder having a locking lance, wherein the locking lance locks the terminal connecting portion of the connection terminal to restrict the rearward movement of the connection terminal; And a terminal front regulating portion that regulates the forward movement of the connection terminal by locking the provided locking piece.

[0007]

In the connector having the above-mentioned structure, the locking lance locks the terminal connecting portion of the connection terminal to restrict the rearward movement of the connection terminal, and the locking piece locks to the front of the connection terminal. Regulate movement to.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail based on the illustrated embodiments. FIG. 1 is a cross-sectional view of the first embodiment, in which a connection terminal 12 having an electric wire 11 connected to the rear portion is housed in a housing 13 and the connection terminal 12 is locked by a rear holder 14 engaged with the rear portion of the housing 13. Is shown.

The connection terminal 12 is formed of a conductive metal plate, and has a rectangular tube-shaped terminal connection portion 21 for connecting a mating terminal (not shown) and two stabilizers facing each other for stabilizing the posture of the connection terminal 12. Pieces 22 and 23 (23 is not shown) and a core wire fixing portion 24 for fixing the core wire of the electric wire 11.
And a covering fixing portion 25 for fixing the covering of the electric wire 11 are sequentially provided from the front.

The housing 13 and the rear holder 14 are made of an electrically insulating synthetic resin material, and as shown in the perspective view of FIG.
A plurality of terminal accommodating chambers 32, which are partitioned by the upper and lower partition walls 13b, the lower wall 13c, and the left and right partition plates 31, are provided in a two-stage double row. In the rear portion of the housing 13, the slit 3 into which the upper wall, the upper and lower partition walls, and the lower wall of the rear holder 14 are fitted, respectively.
3, 34, 35 are provided, and the clearances 32a, 32b into which the side walls of the rear holder 14 are respectively fitted are the outermost partition plates 3.
1 and the side walls 13d and 13e.

Further, at the front end portion of the terminal accommodating chamber 32, a front regulating portion 36 for regulating the forward movement of the connection terminal 12 is formed. In the front part of the terminal accommodating chamber 32, the connection terminal 1
A terminal support base 37a that supports the second terminal connection portion 21 is provided, and a lance support base 37b that supports a locking lance described later is provided at the rear end of the terminal support base 37a.
Further, guide windows 38, 39 opening rearward are formed on the side walls 13d, 13e of the housing 13, and the guide windows 38, 39
On the inner surfaces of the side walls 13d and 13e in front of 39, two lock grooves (not shown) are formed on each side.

On the other hand, the rear holder 14 has a housing 13
A holder main body 51 is provided in the rear part of the housing 13 so as to be movable back and forth. The holder main body 51 is fitted into the slits 33, 34 and 35 of the housing 13, respectively.
The upper and lower partition walls 51b and the lower wall 51c, and the side walls 51d and 51 fitted into the left and right gaps 32a and 32b of the housing, respectively.
e and. Guide grooves 52 for guiding the bottom of the partition plate 31 of the housing 13 are formed on the upper surfaces of the upper and lower partition walls 51b and the lower wall 51c, and the side walls 51d, 51e are guided by the guide windows 38, 39 of the housing 13. Protrusions 53, 54 and two locking protrusions 55, 56 on each side that are locked in the locking groove of the housing 13 (56 is not shown).
And are provided respectively.

The upper wall 51a of the holder main body 51 and the lower surfaces of the upper and lower partition walls 51b are covered with the cover fixing portion 2 of the connection terminal 12.
Locking protrusions 57 for locking 5 are provided respectively.
Further, a locking lance 58 for locking the terminal connecting portion 21 of the connecting terminal 12 and the stabilizer pieces 22 and 23 is provided at the front end portion of the holder main body portion 51 diagonally forward and upward from the upper and lower partition walls 51b and the lower wall 51c. It is projected toward.

As shown in the partially enlarged perspective view of FIG. 3, the locking lance 58 has a width in contact with the partition plate 31 of the housing, that is, substantially the same width as the terminal accommodating chamber 32, and the lower surface of the terminal connecting portion 21 is there. A terminal pressing portion 61 press-fitted between the lance support base 37b and a terminal locking portion 62 that locks the rear end portion of the terminal connecting portion 21, and a stabilizer guide that guides the stabilizer pieces 22 and 23. Grooves 63 and 64 are formed on both side surfaces of the locking lance 58, respectively. The depths of these stabilizer guide grooves 63 and 64 are substantially equal to the thickness of the stabilizer pieces 22 and 23. Surface is terminal accommodating chamber 3
The two partition plates 31 are in contact with each other. Also,
When the terminal locking portion 62 locks the rear portion of the terminal connecting portion 21, the front walls of the stabilizer guide grooves 63 and 64 lock the front edges of the stabilizer pieces 22 and 23.

The housing 13 and the rear holder 14 thus formed are, as shown in the perspective view of FIG. 4, a temporary locking position where the rear holder 14 is inserted into the rear portion of the housing 13 to the middle, and a perspective view of FIG. Rear holder 1 as shown
4 is engaged with the housing 13 at the fully locked position where it is fully pushed.

That is, at the temporary locking position of the rear holder 14,
Upper wall 51a of rear holder 14, upper and lower partition walls 51b, lower wall 5
1c and the side walls 51d and 51e are fitted into the slits 33, 34 and 35 of the housing 13 and the gaps 32a and 32b, respectively, and the lower portion of the partition plate 31 of the housing 13 is the rear holder 1
4 is inserted into the guide groove 52, and the guide protrusion 5 of the rear holder 14 is inserted.
3, 54 are fitted in the guide windows 38, 39 of the housing 13, respectively. The locking projections 55 and 56 are respectively fitted into the locking grooves of the housing 13 at the final locking position of the rear holder 14.

The connection terminal 12 with the electric wire 11 is inserted into the terminal accommodating chamber 32 when the rear holder 14 is in this temporary locking position. At this time, as shown in the upper part of FIG. 6, the terminal connection portion 21 of the connection terminal 12 presses the upper surface of the terminal locking portion 61 of the locking lance 58, and the stabilizer pieces 22 and 23 cause the stabilizer guide groove of the locking lance 58 to move. Fit on top of 63, 64. Further, the terminal pressing portion 62 of the locking lance 58 bent outward contacts the rear surface of the lance support base 37b, and the forward movement of the rear holder 14 is restricted.

When the connecting terminal 12 is further pushed, the locking lance 58 is restored when the terminal connecting portion 21 exceeds the terminal locking portion 61 of the locking lance 58, and the terminal locking is performed as shown in the lower part of FIG. The portion 61 locks the rear end portion of the terminal connecting portion 21, and the stabilizer pieces 22 and 23 are completely fitted in the guide grooves 63 and 64, and the front edges of the stabilizer pieces 22 and 23 are the guide grooves 63 and 64. It contacts the front wall, that is, the rear portion of the terminal locking portion 61. At the same time, the terminal pressing portion 61 of the locking lance 58 moves to a position where it can enter the upper surface of the lance support base 37b, and the rear portion of the cover fixing portion 25 of the connection terminal 12 is positioned in front of the locking protrusion 57 of the rear holder 14. .

When the rear holder 14 is pushed toward the housing 13 from such a state, a final locking state is established, and the terminal locking portion 61 of the locking lance 58 and the locking projection 57 of the lance body 61 are connected to the terminal connecting portion 21. The cover fixing portion 25 is pressed, the terminal pressing portion 61 of the locking lance 58 enters between the lower surface of the terminal connecting portion 21 and the lance support base 37b, and the terminal pressing portion 61 presses the terminal connecting portion 21. Then, the forward movement of the connection terminal 12 is stopped by the terminal connection portion 21 of the connection terminal 12 coming into contact with the front regulation portion 56. At this time, the guide protrusions 53, 54 of the rear holder 14 contact the front walls of the guide windows 38, 39 of the housing, and the locking protrusions 55,
56 are respectively fitted in the lock grooves of the housing 13, and the rear holder 14 is engaged in the main locking position.

As described above, in the first embodiment, the side surface of the locking lance 58 contacts the partition plate 31 via the stabilizer pieces 22 and 23 at both the temporary locking position and the main locking position of the rear holder 14. Therefore, the partition plate 31 can restrict the lateral movement of the locking lance 58. Further, since the terminal locking portion 61 of the locking lance 58 locks the rear end portion of the terminal connection portion 21 and the front edges of the stabilizer pieces 22 and 23 lock the front walls of the guide grooves 63 and 64, The forward / backward movement of the connection terminal 12 can be restricted not only at the main locking position but also at the temporary locking position.

FIG. 7 is a sectional view of the second embodiment, in which a stabilizer piece is not provided on the connecting terminal 71, but a terminal connecting portion 72, a core wire fixing portion 73, and a covering fixing portion 74 are sequentially provided. . Further, the coating of the electric wire 11 is fixed by a coating fixing portion 74 having a large outer diameter. On the other hand, the holder main body portion 82 of the rear holder 81 is formed with a fixing portion fitting groove 83 into which the covering fixing portion 74 having an increased outer diameter is fitted.
The rear holder 84 is provided with only a terminal locking portion 85 that locks the rear end of the terminal connecting portion 72.

In the second embodiment, the locking lance 84 locks the rear portion of the terminal connecting portion 72 at the temporary locking position and the final locking position to restrict the rearward movement of the connection terminal 71 and fix it. The front wall of the part fitting groove 83 locks the covering fixing part 74 to restrict the forward movement of the connection terminal 71.

Since the locking lance 58, which requires a high-performance material, is integrated with the rear holder 14, the amount of expensive material used can be reduced.

[0024]

As described above, in the connector according to the present invention, the locking lance can lock the terminal connection portion of the connection terminal to restrict the rearward movement of the connection terminal, and the terminal connection portion. It is possible to restrict the forward movement of the connection terminal by locking the locking piece provided at the rear of the connection terminal, and to secure a stable locking state of the locking lance and the connection terminal.

[Brief description of drawings]

FIG. 1 is a sectional view of a first embodiment.

FIG. 2 is an exploded perspective view of a housing and a rear holder.

FIG. 3 is a partially enlarged perspective view of a locking lance.

FIG. 4 is a perspective view of a temporary locking position of a housing and a rear holder.

FIG. 5 is a perspective view of a main locking position of a housing and a rear holder.

FIG. 6 is an operation explanatory view.

FIG. 7 is a cross-sectional view of the second embodiment.

[Explanation of symbols]

 12, 71 Connection terminal 13 Housing 14, 81 Rear holder 21, 72 Terminal connection part 22, 23 Stabilizer piece 25, 74 Cover fixing part 31 Partition plate 32 Terminal accommodating chamber 57 Locking protrusion 58, 84 Locking lance 62, 85 Terminal engaging Stop portion 63, 64 Stabilizer guide groove 83 Fixed portion fitting groove

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yoshikazu Tanaka 1-8-1 Kotakemachi, Nerima-ku, Tokyo Ryosei Denso Co., Ltd.

Claims (4)

[Claims] 1. A housing for accommodating a connection terminal in a terminal accommodating chamber, and a rear holder provided with a locking lance for engaging the rear portion of the housing and locking the connection terminal, wherein the locking lance has the above-mentioned structure. A terminal rear restricting portion that locks the terminal connecting portion of the connection terminal to restrict the rearward movement of the connecting terminal, and a locking piece provided on the connection terminal that moves the connecting terminal forward A connector provided with a terminal front regulating portion for regulating the connector. 2. The connector according to claim 1, wherein the locking piece has substantially the same width as the terminal accommodating chamber. 3. The locking piece is a stabilizer piece which is provided at the rear of the terminal connecting portion of the connection terminal and which opposes to the left and right, and the terminal front regulating portion provided on the side surface of the locking lance is provided with the stabilizer piece. The connector according to claim 1, wherein a groove portion that abuts the front edge and locks the stabilizer piece is formed. 4. The locking piece is an electric wire coating fixing portion of the connection terminal, and a groove portion for locking the electric wire coating fixing portion is formed in the terminal front restricting portion provided on a base portion of the locking lance. The connector according to 1.