JPH024461Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a jack for electrically connecting a plug into a light electrical device such as an audio device by inserting the plug into the jack.

[Prior Art] Jacks, which have been widely used in audio equipment and other light electrical equipment, have been known to come in many different shapes and numbers of contact pieces depending on their purpose. As the number of built-in contact pieces has increased, the number of types of parts has also increased, making the structure more complex and difficult to assemble, and in terms of quality, it has become difficult to resist the excessive force from the plug. There are problems such as not having one. Furthermore, since it is necessary to prepare a wide variety of contact pieces with different numbers and shapes depending on the application, there is also the problem that it is uneconomical to meet the market demand for a wide variety of products in small quantities.

[Purpose of the invention] The purpose of the invention is to have a small number of parts, a simple structure, easy assembly, a large holding force against the plug, a large resistance against unreasonable force from the plug, and a structure with multiple movable parts. The object of the present invention is to provide a jack that can be adapted to the diameter of each part of the plug to be inserted, while using contact pieces of the same shape.

[Summary of the invention] The gist of the invention to achieve the above objectives is as follows:
A plurality of contact piece fitting grooves are formed in an electrically insulating base body having a plug insertion hole in a direction perpendicular to the plug insertion hole, and each of these contact piece fitting grooves has a window opening into the plug insertion hole. A resilient movable contact piece made by bending a metal plate into a substantially U-shape is fitted into each of the contact fitting grooves, and the contact portion provided on the movable part of these movable contact pieces is inserted into the window. The jack is characterized in that the mounting portions on both sides of these movable contact pieces are fixed to the base body so as to face into the plug insertion hole from the top.

[Embodiments of the invention] The invention will be described in detail based on illustrated embodiments.

Figures 1a and b are perspective views of the base 1 of the jack, and Figure 2 is a perspective view of the movable contact piece 2. It has an insertion hole 3, and around the insertion hole 3, a plurality of horizontal contact piece fitting holes 4a, 4b and a plurality of contact piece fitting grooves 5 connecting these are formed in the vertical direction. A window portion 6 opening toward the plug insertion hole 3 is provided. Contact piece mounting holes 4a, 4b
are provided with locking holes 7a and 7b for locking locking claws of the movable contact piece 2, which will be described later. Also,
Reference numeral 8 indicates a convex body for regulating the mounting position when it is mounted on a printed circuit board or the like.

The movable contact piece 2 is formed by punching and molding a metal plate having conductivity and elasticity, and is fitted into the mounting portions 2a and 2b inserted into the contact piece mounting holes 4a and 4b and the contact piece fitting groove 5. It consists of a movable part 2c, and the movable part 2c is provided with a contact part 2d that projects from the window part 6 into the area of the plug insertion hole 3. The mounting parts 2a, 2b are provided with locking claws 2e, 2f, and the mounting parts 2a, 2b are provided with locking claws 2e, 2f.
Contact portions 2g, 2h are provided at the distal ends of a, 2b, and end portions 2i, 2j protrude from the ends thereof.
Moreover, cushion parts 2k, 2 that bulge outward to promote elasticity are formed between the attachment parts 2a, 2b and the movable part 2c.

FIG. 3 shows a sectional view of such a movable contact piece 2 assembled into the base body 1, and shows the mounting portion 2 of the movable contact piece 2.
When a and 2b are inserted into the contact piece mounting holes 4a and 4b, they are stopped by the contact parts 2g and 2h, and the locking claws 2e and 2f
are locked in the locking holes 7a and 7b, making it impossible to pull out the movable contact piece 2. The end portions 2i and 2j are protruded from the base 1 to the outside for soldering to a printed circuit board, etc., and the contact portion 2d is elastically protruded from the window portion 6 into the plug insertion hole 3.

This figure 3 shows a state in which the plug is not inserted into the plug insertion hole 3, but when the plug is inserted, the contact portion 2d of the movable contact piece 2 is pushed to the outside of the plug insertion hole 3, and comes into elastic contact with the plug. will be retained.

FIG. 4 shows another embodiment of the movable contact piece 2.
The movable contact piece 2 in the figure is the mounting parts 2a, 2b and the movable part 2c.
The cushion parts 2k, 2 are provided between the mounting parts 2a, 2b and the movable part 2c to promote elasticity, whereas the movable contact piece 2 is simply bent at a right angle between the mounting parts 2a, 2b and the movable part 2c. ing.

In Fig. 5, contact piece mounting grooves 9a, 9b exposed to the outside are formed in the base body 1 instead of the contact piece mounting holes 4a, 4b, and the contact piece mounting portions 2a, 2b of the movable contact piece 2 are attached to these. It runs along the grooves 9a and 9b. Mounting part 2
A and 2b are not provided with locking claws 2e and 2f, but a portion of the tip is bent at the rear of the base body 1 and is locked to the base body 1 to prevent the movable contact piece 2 from slipping out. Note that attachment of the movable contact pieces 2 to the second and third contact fitting grooves 5 is not shown.

Note that when the inner diameter of the plug insertion hole 3 changes, for example, in the length direction, by adjusting the depth of the contact fitting groove 5 in accordance with the diameter, the movable contact piece 2 of the same shape can be changed. can also be adequately addressed.

[Effects of the invention] As explained above, the jack according to the invention has the following effects:
Since movable contact pieces of the same size can be used for each stage, there are only two types of parts, the base body and the movable contact pieces, making it easy to manufacture and manage the parts. Furthermore, since assembly can be performed simply by inserting the movable contact piece, assembly is easy and the strength is stable.

[Brief explanation of drawings]

The drawings show an embodiment of the jack according to the present invention, and FIGS. 1a and b are perspective views of the base, FIG. 2 is a perspective view of the movable contact piece, FIG. This figure is a perspective view of another embodiment of the movable contact piece, and FIG. 5 is a perspective view of a base according to another embodiment. 1 is a base body, 2 is a movable contact piece, 2a, 2b is a mounting part, 2c is a movable part, 2d is a contact part, 2e, 2f
are locking claws, 2i, 2j are ends, 2K, 2 are cushion parts, 3 is plug insertion hole, 4 is contact piece mounting hole,
5 is a contact fitting groove, 6 is a window, 7a and 7b are locking holes, 8 is a convex body, and 9a and 9b are contact piece mounting grooves.

Claims (1)

[Claims for Utility Model Registration] 1. An electrically insulating base having a plug insertion hole,
A plurality of stages of contact piece fitting grooves are formed in a direction perpendicular to the plug insertion hole, and each of these contact piece fitting grooves is provided with a window portion opening into the plug insertion hole,
Resilient movable contact pieces made by bending a metal plate into a substantially U-shape are respectively fitted into the contact fitting grooves, and the contact portions provided on the movable parts of these movable contact pieces are inserted through the window portion into the plug. A jack characterized in that mounting portions on both sides of these movable contact pieces are fixed to the base body so as to face into the insertion hole. 2. A utility model in which the mounting portion of the movable contact piece is fitted into the mounting hole of the base body, and the locking pawl provided on the mounting portion of the movable contact piece is locked in the locking hole provided in the mounting hole. A jack according to claim 1. 3. The jack according to claim 1, wherein the contact portion bulges toward the plug insertion hole. 4. The jack according to claim 1, wherein the end of the attachment portion of the movable contact piece protrudes from the base body.