JPS6023914Y2 - No-pull force connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a no-insertion/extraction force connector that is composed of a housing, contacts, a backboard, and a slider, and is assembled after soldering and cleaning operations are performed in the partial assembly stage.

Conventionally, there are two methods for fixing contacts to the backboard in card edge type insertion/removal connectors: press-fitting and soldering.In the case of press-fitting, it is necessary to select an appropriate wall thickness of the press-fitted part of the backboard and the dimensions of the press-fitted part of the contact. Since it is necessary to precisely control the size of the large holes in the backboard, i.e., the press-fit allowance, for mass production, a group of contacts arranged at the correct spacing is inserted into a backboard with loose through-holes printed on the periphery. The most commonly used method is to pass through a molten solder bath.
Cleaning is required because the flux scattered and deposited during soldering impairs the movement of the mechanism, requiring a large force to drive the slider and causing poor contact on the contact surface.

Steam cleaning or ultrasonic cleaning is performed because flux does not easily come off simply by soaking it in a solvent, but connectors after assembly, especially socket connectors, often have internal contact surfaces and slider sliding parts that require cleaning the most. There were many problems with cleaning.

The present invention was made with the aim of improving these problems in conventional cleaning operations, and it is possible to effectively solder and clean the parts that require cleaning most during the partial assembly stage. The present invention provides a no-insertion/extraction-force connector which can be assembled afterward to prevent the adverse effects of flux.

An embodiment of the present invention will be described based on the drawings.

Figure 1 shows post 1, backboard 2 and contact 3.
FIG. 2 is a three-dimensional view of the assembled connector 6 and slider 5. FIG.

First, the post 1 is soldered and fixed to the through hole 21 of the backboard 2, and after cleaning the flux in this state, the housing 4 containing the contacts 3 is covered from above.

A locking protrusion 11 is provided on each post, and a post locking hole 41 is bored in the corresponding portion of the housing 4, and the housing 4 is attached to the backboard 2 by engaging with each post.

The slider 5 is inserted into the tunnel 42 formed by the housing 4 and the backboard 2, and the driven protrusion 31 provided on the contact 3 engages with the guide groove 51 provided on the side surface of the slider 5, causing the slider 5 to slide. contact 3
is moved up and down.

A cross-sectional view of this state is shown in FIG.

Also, FIG. 4 is a cross-sectional view of the housing 4 in FIG. 3 taken along the center line A-A'. The upper part of the contact 3 has a slit 32, and the tip part including the contact part 33 is divided into two parts, each having a curved part. A drop-off prevention protrusion 34.34' is provided on the outside near the base,
When assembling the contact 3 from the bottom of the housing 4, the width W1 of the intermediate passage 43 is slightly narrower than the width W2 between both ends of the drop-off prevention protrusion 34, 34', so the slit 3
The contact 3 is elastically deformed in the direction of narrowing the contacts 2 and passes through, and after passing through, it returns to its original shape and the falling-off prevention protrusions 34, 34' engage the steps 44 of the housing 4, thereby preventing the contacts 3 from falling downward. .

At the bottom of the contact 3, there are two pairs of sliding guide protrusions 35.3 protruding from both sides so as to sandwich the driven protrusion 31 above and below.
6 is provided, and the sliding guide groove 4 provided in the housing 4
5 and restricts the degree of freedom of the contact 3 back and forth, and the shoulder 37 of the sliding protrusion 35 engages with the bottom surface 4 of the sliding guide groove 45.
6 prevents the contact 3 from coming out upwards, so when only the housing 4 and the contact 3 are partially assembled, the contact 3 will not fall out no matter what position it is in. .

The post 1 soldered to the backboard 2 is accommodated in a post accommodating groove 47 provided in the housing 4, and the locking protrusion 1
1 is engaged with the locking hole 41 and assembled, and a part of the back surface of the contact 3 is inserted into the post accommodation groove 4 as a sliding contact 38.
The contact 3 protrudes from the contact point 7 and comes into contact with the post 1 after it is housed, and slides against the post 1 when the contact 3 moves up and down, thereby always providing electrical continuity between the contact 3 and the post 1.

The driven protrusion 31 protrudes into the tunnel 42, and when the slider 5 is inserted into the tunnel 42, the guide groove 51 of the slider 5 is inserted into the tunnel 42.
The driven protrusion 31 engages with the contact 3, and the movement of the slider 5 receives force from the guide groove wall, causing the contact 3 to move up and down.

When the slider is passed from the state shown in FIG. 2, the contact 3 is placed in the state shown on the left in FIG. When the slider is passed in the opposite direction, the contact 3 is in the third state, that is, the opening/closing protrusion 39 descends down the step 48 and comes into contact with the lower part of the step 48, and the contact 3
3 approaches the center of the printed circuit board insertion groove 49.

A printed circuit board (not shown) is inserted in the left state of FIG. 3, and then the slider is passed through the slider and brought into the right state to bring the printed circuit board and the contacts 3 into contact.

In this invention, by separating the contact from the post as in the above configuration, it is possible to solder and clean it with a simple shape, which makes the work easier, and the slider sliding part and contact part are extremely clean. The parts are not exposed to flux splashes, preventing poor contact or malfunction of sliding parts due to flux, and the contact parts are wiped off by the sliding action to wipe away other debris, making them reliable as connectors. It can greatly improve your sexuality.

The present invention is not limited to the embodiments described above, but includes various types based on the same technical idea, such as ordinary male and female connectors in which the printed board insertion groove described above is an independent hole and the other party is a pin connector. Needless to say.

[Brief explanation of the drawing]

FIG. 1 is a three-dimensional view showing the configuration and assembly of the housing, contacts, posts, and backboard. FIG. 2 is a three-dimensional view showing the assembly shown in FIG. 1 and the position of the slider. FIG. 3 is a sectional view showing the relationship between each component. FIG. 4 is a part of the sectional view taken along line AA' in FIG. 1...post, 2...pack hoard,
3... Contact, 4... Housing, 5... Slider, 6... Assembly (slider not included), 11... Locking Protrusion, 21...
... Through hole, 31 ... Driven protrusion, 3
3...Contact part, 34, 34'...Ejection prevention protrusion, 35, 36...Sliding guide protrusion, 38
...Sliding protrusion, 39... Opening/closing protrusion, 4
1...Post locking hole, 42...Tunnel, 45...Contact sliding guide groove, 47...
...Post accommodation groove, 48...Step part, 49.
......Printed circuit board insertion groove, 51...
・Guide groove.

Claims (1)

[Scope of utility model registration request] A post is fixed to a bank board, and the housing that is locked to the post has a contact part that contacts a mating contact or a printed circuit board, etc. at one end while maintaining sliding conduction with the post, and a guide groove for the slider at the other end. A no-insertion/extraction-force connector that accommodates a plurality of contacts having driven protrusions that engage with each other, and wherein when the slider moves along the direction in which the contacts are arranged, the contacts slide up and down and the contact portion moves forward and backward. .