JPH06251826A - Lever type connector - Google Patents

Abstract

PURPOSE:To ensure easy mounting and demounting by arranging male and female terminals in sequence of greater-to-smaller mounting force toward the outer periphery in reference to the mounting shaft of a connector passing through the rotationally moving supporting shaft of a lever member. CONSTITUTION:The housing 1 of a male connector A has a number of terminal storage rooms 2 to store female terminals T inside. The female terminals T are arranged in sequence of greater-to-smaller mounting force per unit cross-sectional area toward the outer periphery in reference to the mounting shaft I of the connector as the rotationally moving supporting shaft of a lever member C. A female connector B is provided with a number of male terminals U arranged corresponding to the female terminals T of the male connector A, as well. When the male connector A is inserted into the female connector B, a cum pin 3 is moved into the guide portion 6. When the male connector A is pressurized, it is into an initial mounting condition. When the lever member C is rotationally moved, the male connector A is pulled into the female connector B, resulting in a completely mounting condition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a lever type connector in which a pair of female and male connectors are fitted by using a lever member.

[0002]

2. Description of the Related Art Conventionally, as this type of connector, a structure shown in FIGS. 9 to 12 has been proposed. This is provided with a support shaft a ₂ on both side surfaces a _{1 of} a female connector a, an operation lever b attached to the support shaft a _2, and a cam groove b _{1 of the} operation lever b on both side surfaces c ₁ of the male connector c. Is provided with a cam pin d for engaging with, and the female connector a is provided with a locking means e for the operation lever b.

When the connectors a and c are initially mated, the cam groove b ₁ of the operating lever b is engaged with the cam pin d, and the operating lever b is pushed and rotated as indicated by arrow P in FIG. By action, the female connector a is moved forward with respect to the male connector c, and the fitting is completed at the position where the operation lever b is engaged with the lock means e (FIG. 10).

[0004]

The female connector a and the male connector c of the above-mentioned conventional lever-type connector are fitted with a large number of females as shown in FIGS. 11 (A) and 11 (B). Since the terminals t and the male terminals u are arranged, the fitting force or the detaching force per unit cross-sectional area between the female connector a and the male connector c becomes large due to the friction between these male and female terminals t and u. The operability of fitting or disengaging the female connector a and the male connector c with the turning operation of the operation lever b was poor.

The male connector c and the female connector a
The male and female terminals t and u used for the
The fitting length is not limited to one type such as long or short. As a result, for example, a plurality of types of terminals t and u having different fitting forces (or disengaging forces) are often used.

As described above, a large number of terminals t and u of a plurality of types are used.
When using, support shaft a of operation lever b ₂Away from
A terminal with a large fitting force per pole, such as male and female terminals
If the contact area between t and u is large or the mating length is long
Female connector a and male connector when arranging
The overall fitting force and the like with c becomes large. Moreover, a pair of ends
The mating force per unit cross-sectional area between the children t and u increases.
As a result, the operation lever b and the male connector c can be inserted and removed.
Make the frame of the female connector a
Must be made stronger and more rigid. Therefore
The operating lever b and the frame are larger and larger.
In addition, the wall thickness increases and the weight increases.

Further, a support shaft a as a rotation shaft of the operating lever b.
_{In the} vicinity of ₂ , the force from the operating lever b is most easily transmitted. However, a pair of male and female terminals t and u, which require a large fitting force per unit cross-sectional area, are arranged at a location far from the spindle a ₂ as shown in FIGS. 11 (A) and 11 (B). In this case, the force from the operation lever b is not sufficiently transmitted when the female connector a and the male connector c are engaged or disengaged. Further, as shown in FIG. 10, the fitting axes I and I'of the female connector a and the male connector c passing through the support shaft a ₂ of the operating lever b do not coincide with each other, and a deviation occurs, so that the female connector a. On the other hand, a gap k is formed on the fitting surface of the male connector c. Moreover, as shown by the phantom line in FIG. 12, the male connector c is eccentric with respect to the female connector a,
Unnatural mating condition. Therefore, there is rattling,
Or, the contact between the male and female terminals t and u becomes poor,
In some cases, the reliability of the product as a connector was lacking due to the inability to achieve good electrical continuity.

The present invention has been made by paying attention to the above points, and accommodates a large number of male and female terminals, respectively, and rotates a lever member to engage or disengage a pair of connectors fitted to each other. It is an object of the present invention to provide a lever-type connector which can be easily and surely operated without deviation by operation, has improved operability, and has sufficient contact between male and female terminals to have high reliability as a product.

[0009]

SUMMARY OF THE INVENTION In order to solve the above problems, according to the present invention, a pair of connectors, each accommodating a large number of male and female terminals, are fitted and disengaged from each other. In the lever type connector, the male and female terminals having a large fitting force per unit cross-sectional area toward the outer peripheral portion based on the fitting axis of the connector passing through the rotation supporting shaft of the lever member are used. We adopted a method of arranging from small to small ones gradually.

[0010]

With a large number of terminals housed in a pair of male and female connectors, the fitting force is large per unit cross-sectional area toward the outer periphery with reference to the fitting axis of the connector passing through the pivot shaft of the lever member. Since they are gradually arranged from the small one to the smaller one, the bias of the connectors is eliminated when the pair of connectors is fitted (or disengaged) by rotating the lever member.

[0011]

1 to 3 show an embodiment of the present invention.
Is a male connector, B is a female connector, and C is a lever member. The synthetic resin housing 1 of the male connector A has a large number of terminal accommodating chambers 2 for accommodating the female terminals T therein.
Cam pins 3 are provided in front of both side walls.

The female terminal T is fitted per unit cross-sectional area toward the outer peripheral portion with reference to the fitting axis I'of the connector passing through the pins 7 and 7 as the rotation supporting shaft of the lever member C described later. The resultant force is arranged from the largest to the smallest. As the fitting force per unit cross-sectional area is increased, for example, although not shown in FIG. 1, although not shown, the fitting length is changed from a long fitting length to a short fitting length, or even if the fitting length is the same, the connector fitting There is an arrangement in which a large number of installations are arranged in the vicinity of the fitting axis I'on the basis of the axis I ', and the installation number is gradually reduced toward the outer peripheral portion.

Similarly, in the female connector B, a large number of male terminals U are provided in an array corresponding to the female terminals T of the male connector A.

A hood 5 is provided in front of the housing body 4 of the female connector B so as to receive the male connector A. The hood 5 has a lever member C and a pin guide portion 6 for the cam pin 3 on both side walls thereof. A supporting pin 7 is provided. The elastic locking piece 5a having a locking projection 5a ₁ is provided at the front end of the front outer circumferential wall of the hood 5 (see FIGS. 2 and 3).

The lever member C is formed in a U-shaped cross section by connecting the shoulder portions of a pair of levers 8, 8 facing each other with a connecting portion 9. Each lever 8 is provided with a shaft hole 10 and a cam groove 11 having one opening end 11a (see FIG. 1).

Assembly of the connector with lever is performed as follows. First, the pair of levers 8 and 8 of the lever member C is temporarily expanded outward by utilizing its flexibility, and the shaft hole 10 is externally inserted into the pin 7 of the female connector B. At this time, the connecting portion 9 of the lever member C engages with the rear end of the front outer peripheral wall of the female connector B, so that the lever member C matches the opening end 11a of the cam groove 11 with the pin guide portion 6 of the female connector B. In this state, the male connector A is stably held at the fitting and receiving position. At this time, the free end portion of the lever 8 of the lever member C is slidably engaged in the separation preventing portion 4b provided on one side of the housing body 4.

In this state, when the male connector A is inserted into the female connector B, the cam pin 3 enters the pin guide portion 6. Next, when the male connector A is pressed, the cam pin 3
Rotates the lever member C slightly in the direction of arrow P to enter the initial fitting state (FIG. 2). In this case, the separation preventing portion 4b prevents the lever 8 from coming off due to excessive displacement.

When the lever member C is rotated in the direction of arrow P, the cam pin 3 of the male connector A is fitted in the cam groove 11 of the lever member C so that the female connector B is maleized by leverage. The connector A is advanced. Then, the male connector A is pulled into the female connector B to be in a completely fitted state (FIG. 3).

At this time, a pair of male connector A and female connector B
A female terminal T and a male terminal U are provided in the lever member C, respectively.
The fitting force per unit cross-sectional area from the larger fitting force toward the outer peripheral portion based on the fitting shaft I'of the connector passing through the pins 7 and 7 serving as the rotation supporting shafts is shown in, for example, FIG. As described above, since the contact area per unit cross-sectional area between the male terminal U and the female terminal T is gradually arranged from the larger one to the smaller one, the fitting axis I of the male connector A is the fitting axis I of the female connector B. 'Is consistent with the bias. Therefore, female connector B
The fitting operation of the male connector A into the inside is smoothly performed without being caught. Further, after the fitting, there is no gap between the female connector B and the male connector A as in the conventional case, and rattling does not occur. Moreover, the contact between the female terminal T and the male terminal U per unit cross-sectional area is good, and excellent electrical conduction is achieved. In addition, the fact that the fitting force per unit cross-sectional area between the female terminal T and the male terminal U is large means not only the above contact area but also the outer peripheral portion based on the fitting axis I '(not shown). Therefore, the number of male terminals U and female terminals T in the vicinity thereof is increased based on the fitting axis I ′ even if the fitting length is arranged from long to short. Then, the fitting force per unit cross-sectional area is increased, and the number of the male terminals U and the female terminals T installed is gradually reduced toward the outer peripheral portion.
It is also conceivable that the fitting force per unit cross-sectional area may be arranged to gradually decrease toward the outer peripheral portion.

Then, when the lever member C is subsequently rotated, the rear end of the connecting portion 9 is brought into a locked state in which the rear end of the connecting portion 9 is engaged with the locking projection 5a ₁ of the elastic locking piece 5a (see the position shown in phantom in FIG. 3). .

What is shown in FIGS. 4 and 5 is the second embodiment of the present invention.
This is an example. In this embodiment, unlike the first embodiment, an operating lever member C'is rotatably attached to a male connector A'using a pin 20 as a rotation support shaft. In addition, the arrangement of a large number of female terminals T housed in the male connector A'is used as a pin 2 as a pivot for the lever member C '.
With the fitting axis I of the connector passing through 0 as a reference, the fitting force per unit cross-sectional area is gradually arranged from the one having a large fitting force to the one having a small fitting force per unit cross-sectional area, and the male terminal U is femalely connected to the female terminal T. It is housed in the connector B '. Then, by inserting the cam pins 22 projecting on both sides of the female connector B'into the cam grooves 21 provided inside the lever member C ', the male connector A'is fitted with a small fitting force.
The lever member C'is engaged with the lock projection 23 easily and surely.

6 to 8 are exploded perspective views of the connector showing the third embodiment of the present invention. In this example,
Unlike the first and second embodiments, the lever member C ″ is shown as being attached to the frame D separately from the connector, and A ₁ ″ _and A ₂ ″ are a large number of female terminals T. Male connectors, B ₁ ″ _and B ₂ ″, which are housed in the above-mentioned arrangement inside and are previously coupled through a coupling portion, similarly accommodate a large number of female terminals U which can be fitted into the female terminals T therein. The female connector is housed in the same manner.

Reference numeral 30 is a cam pin projecting from at least one side wall of the housing 31 of the male connectors A ₁ ″ _and A ₂ ″.

[0024] 32, 32 'is a pin-guiding part, the pin-guiding part 32, 32' female connector B _{1 ",} B _2" middle portion and the other side wall of the hood 34 located in the first half of the housing 33 of It is formed to extend in the front-rear direction on the opposing position of the intermediate portion of the side wall and the intermediate wall.

The lever member C ″ is formed in a substantially U-shaped cross section, and has shaft holes 36 formed in a pair of levers 35 facing each other.
Is engaged with the support shafts 38 projecting from both side walls of the surrounding frame 37 of the frame D so as to be rotatable. Reference numeral 39 denotes a cam groove provided inside the lever member C ″, and one end of the cam groove 39 has an opening end 39a.

The surrounding frame 37 of the frame D is an intermediate wall 37 '.
Thus, the two chambers R ₁ and R ₂ penetrating in the front-rear direction are partitioned. Reference numerals 40 and 40 'denote pin guide portions formed on both side walls of the surrounding frame 37 and the intermediate wall 37' so as to extend in the front-rear direction.

Reference numeral 41 denotes a flexible lock piece provided on the upper wall of the surrounding frame 37. The flexible lock piece 41 is a lever member C ".
To secure the operation completion position.

In the above structure, the female connector B₁″, B
₂″ Is the chamber in the surrounding frame 37 of the frame D with lever in advance
R₁, R₂Housed inside. In this case, female connector B
₁″ _,B₂″ Pin guide portions 32, 32 ′ are
At the opposite position of the middle part of the side wall and the other side wall and the middle wall 37 '
In conformity with the pin guide portions 40, 40 'formed in the front-back direction
At the lever member C ″ in parallel and therefore in the non-operating position
The open end 39a of the cam groove 39 that matches the pin guide portion 40
To do.

In this state, a pair of pre-coupled male connectors A ₁ ″ and A ₂ ″ are inserted into the female connectors B ₁ ″ _and B ₂ ″ in the frame D with a lever, and the cam pin 30 is pin-guided. It is located at the entrance of the portion 40 and the cam groove 39. Next, the lever member C ″ is pivotally operated to allow the male connectors A ₁ ″ and A ₂ ″ to be easily and securely fitted into the female connectors B ₁ ″ and B ₂ ″ by the cam groove 39 via the cam pins 30. Pull in to complete mating.

[0030]

As described above, according to the present invention, a pair of male and female terminals are arranged toward the outer peripheral portion with respect to the fitting axis of the connector passing through the pivotal support shaft of the lever member per unit cross-sectional area. Since the fitting force is gradually arranged from the one having a large fitting force to the one having a small fitting force, the bias of the pair of connectors is eliminated by the turning operation of the lever member, and the fitting or the detachment can be easily and surely performed.
In addition, the operability is improved, the contact between the male and female terminals becomes sufficient, and the reliability of the product is enhanced.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a lever-type connector showing an embodiment of the present invention.

FIG. 2 is a side view of the male and female connectors at the start of coupling.

FIG. 3 is a side view of the male and female connectors in a completely fitted state.

FIG. 4 is a side view of the second embodiment of the present invention in a state before the pair of connectors are fitted to each other.

FIG. 5 is a side view showing a completely fitted state of the pair of connectors.

FIG. 6 is an exploded perspective view showing a third embodiment of the lever-type connector of the present invention.

FIG. 7 is a side view before fitting the male connector to the female connector that is also pushed into the lever-equipped frame.

FIG. 8 is a side view showing a state in which a pair of connectors are fitted with each other using a frame with a lever.

FIG. 9 is a side view showing a state before fitting a pair of connectors in a conventional example.

FIG. 10 is a side view showing a completely fitted state of a pair of connectors.

FIG. 11A is a plan view similarly illustrating the female connector, and FIG. 11B is a bottom view.

FIG. 12 is a side view showing the mating state of a pair of connectors in an explanatory manner.

[Explanation of symbols]

A, A ₁ ′, A ₂ ′ _, A ″ Male connector B, B ₁ ′, B ₂ ′ _, B ″ Female connector C, C ′, C ″ Lever member D frame 3, 22, 30 Cam pin 6, 32, 32 ′, 40, 40 ′ Pin guide part 11, 21, 39 Cam groove 11a, 39a Open end T Female terminal U Male terminal

[Procedure amendment]

[Submission date] June 21, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0022

[Correction method] Change

[Correction content]

6 to 8 are exploded perspective views of the connector showing the third embodiment of the present invention. In this example,
Unlike the first and second embodiments, the lever member C ″ is shown as being attached to the frame D separately from the connector, and A ₁ ″ and A ₂ ″ are a large number of female terminals T. Female connectors B ₁ ″ and B ₂ ″, which are accommodated in the above-mentioned arrangement inside and are previously coupled via a coupling portion, similarly accommodate a large number of male terminals U which can be fitted into the female terminals T inside. Is a female connector that is housed in.

Claims (1)

[Claims] 1. A lever-type connector in which a plurality of male and female terminals are housed, and a pair of connectors that are fitted to each other are engaged and disengaged by rotating a lever member. Lever type characterized in that male and female terminals are gradually arranged from the one with a large fitting force per unit cross-sectional area to the one with a small fitting force per unit cross-sectional area toward the outer periphery based on the fitting axis of the connector passing through the shaft. connector.