JPH0430794Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to an ultra-compact single-head jack with a switch suitable for connecting audio equipment and various other electronic devices, and is particularly applicable to terminal fittings. Due to the simple structure of the housing, the multiple terminal fittings, including the switch terminal pieces that are activated by contact with the inserted plug, that is, the terminal fittings that make up the switch mechanism, have sufficient elasticity. and the first and second (or third)
At a predetermined interval,
By configuring the structure so that they can be supported reliably and independently from each other, it prevents poor connection with the plug, improving reliability, and reducing the number of parts used, making the assembly process easier. This invention relates to a single-headed jack with a switch that enables cost reduction by simplifying the assembly process and making it possible to automate the assembly process.

BACKGROUND OF THE INVENTION In recent years, audio equipment and various other electronic devices have become more sophisticated on the one hand, while on the other hand they have become ultra-miniaturized, making them suitable for portable use, and are becoming increasingly polarized.

In the case of electronic devices that require ultra-miniaturization, it is natural that the components used therein also need to be ultra-miniature.

By the way, in the case of single-headed jacks, according to the JIS standard,
The minimum diameter of the plug to be connected to this is determined. As a result, the dimensions of a single-head jack are, for example, a number of vertical and horizontal dimensions for the plug insertion surface.
It has become extremely small, with a depth of more than 10 mm.

Moreover, like a single-headed jack with a switch,
In the case of a jack equipped with multiple terminal fittings, including the terminal fittings that make up the switch mechanism, it is required not only to be compact but also to have sufficient elasticity to maintain a good connection with the plug. Therefore, compared to a conventional size single-headed jack with a switch, it is subject to significantly more restrictions in terms of manufacturing.

In general, the number of parts that make up a single-headed jack with a switch is 1 to 2 insulating members that form the casing that surrounds the side of the tip of the inserted plug, even in the case of 3 terminals. Three terminal fittings are required, including the terminal fittings that constitute the switch mechanism. Therefore, even in the case of three terminals, the minimum number of parts is about four to five.

FIG. 12 is a circuit diagram of a single-headed jack with a switch, showing the relationship between the single-headed jack with a switch and an inserted plug, which has three terminals.
In the drawing, P is the plug, S is the earth spring, and B
indicates a break terminal, and T indicates a tip spring.

In this way, even in the case of a conventional single-head jack with a switch, there are three terminal fittings, namely, the earth spring S, the break terminal B, and the chip spring T.
In addition, at least one housing of insulating material is used to form a casing that laterally surrounds the plug tip to be inserted.

FIG. 13 is a circuit diagram of a single-headed jack with a switch, showing the relationship between the single-headed jack with a switch and an inserted plug, which has five terminals. The symbols in the drawings are the same as in FIG. 12,
Further, B1 and B2 are break terminals, and R is a ring spring.

In the case of the five-terminal single-head jack with switch shown in FIG. 13, five terminal fittings are required.

These components are typically assembled by hand using jigs and tools, as explained later in connection with the drawings.
Assembled into a product.

Figures 1 to 4 are structural diagrams showing the detailed structure of a conventional single-headed jack with a switch having five terminals, in which 1 is a front view, 2 is a rear view, 3 is a side view, and 4 is a bottom view. The symbols in the drawings are the same as in FIGS. 12 and 13,
Further, H indicates a housing member.

As shown in FIGS. 1 to 4, the conventional single-head jack with a switch has five terminals.
It is composed of one housing member H, five terminal fittings, namely, an earth spring S, a tip spring T, break terminals B1 and B2, and a ring spring R.

Then, each of the five terminal fittings is sequentially press-fitted from the back side of one housing member H, that is, from the direction shown in FIG. Retained.

In this case, each terminal fitting, particularly the tip spring T and break terminal B1, and the ring spring R and break terminal B2 that constitute the switch, are required to be held in accurate positions from the viewpoint of reliability.

As described above, the conventional single-headed jack with a switch uses a large number of parts, and is assembled manually using jigs and tools. Therefore, when the entire product is downsized, assembly work during manufacturing becomes more complex, and it is inevitable that some parts will be defective, resulting in lower yields.
Furthermore, this causes the inconvenience of becoming a cause of failure and lowering reliability.

One way to solve this inconvenience is to form a plurality of terminal fittings including the terminal fittings constituting the switch mechanism in a continuous state, in other words,
Create multiple terminal fittings including the terminal fittings that make up the switch mechanism as continuous terminal fittings,
A possible method is to insert-mold the continuous terminal fittings to form a support portion for the terminal fittings for attachment to the housing and mutual positioning, and to separate the terminal fittings after assembly.

However, in the case of ultra-compact single-head jacks with switches, this insert molding method has a limit to the processing accuracy of the mold part, and because of insert molding, the continuous part of the continuous terminal fitting, that is, the separated part, must be made wider. Since it is necessary to design, the number of consecutive terminal fittings to be cut out, in other words, the number of sets of continuous terminal fittings to be punched from a metal plate of the same area, is reduced, leading to an increase in costs.

Furthermore, the shape of the molded part to be insert-molded becomes complicated to accommodate the shape of the continuous terminal fittings including the terminal fittings that make up the switch mechanism, and there is a possibility that imperfections may occur, such as holes in the molded part. If this occurs, flux will infiltrate from this portion during attachment to a board, etc., reducing reliability.

In particular, in the case of continuous terminal fittings that include the terminal fittings that make up the switch mechanism, each terminal fitting must have the necessary elasticity to maintain good contact with the plug, so the bending process is complicated. However, during the bending process after insert molding, imperfections such as cracks are likely to occur in the mold part, which is disadvantageous.

In this way, especially for ultra-compact single-head jacks with switches, it is simply a matter of having a structure as simple as possible, providing terminal fittings with the necessary elasticity, and reducing the number of parts as much as possible. Not only from the perspective of the work process during manufacturing, but also
It is desired from the point of view of improving reliability, and furthermore,
In recent years, there has been a strong demand for structures that can be adapted to automatic assembly, especially from the viewpoint of cost reduction.

However, to date, there has been no single-headed jack with a switch that fully satisfies these requirements.

Problems to be Solved by the Invention Therefore, with the single-head jack with a switch of this invention, we have specifically solved these inconveniences in the conventional ultra-compact single-head jack with a switch, and have reduced the number of parts required for the jack. decrease,
By simplifying the assembly work, and by configuring a plurality of terminal fittings including the terminal fittings that constitute the switch mechanism and having a shape that has the necessary elasticity, to be reliably held in a predetermined position,
Good contact with the plug can be obtained, and when assembled onto a printed circuit board, flux etc. can be prevented from penetrating into the interior of the single-headed jack with a switch, improving reliability, yield, etc.
The objective is to achieve cost reduction by being able to respond to automation of the assembly process.

Means for Solving the Problems In this invention, a plurality of terminal fittings 31 to 33 including terminal fittings 32 and 33 constituting a switch mechanism are used.
and insulating casings 1 and 2 that surround the sides of the plug tip to be inserted, wherein the plurality of terminal fittings 31 to 33 each have two holes. 35 to 37, and the two holes 35 to 37 are arranged on one surface on one side with respect to the insertion direction of the plug, and the pair of terminal fittings 32 and 33 constituting the switch mechanism are , on one surface on one side with respect to the insertion direction of the plug, there is a substantially square shape between the two holes 36 and 37, respectively.
The substantially dogleg-shaped portion of one terminal fitting 32 is formed in the shape of the letter ``.''
3 is bent in a direction opposite to the direction in which the terminal fitting 3 is formed into a substantially dogleg shape.
3, and the plurality of terminal fittings 31 to 33 have two holes 35 to 37, respectively.
are continuous with each other on the outside where the housings 1,
The plurality of terminal fittings 31 to 33 are formed by cut portions of continuous parts that are cut after being fixed to 2 and have mutually independent terminal parts, and the housing member and the cover member allow the plurality of terminal fittings 31 to 33 to This configuration includes the casings 1 and 2 that sandwich the terminal portions of the terminal fittings 31 to 33.

Example In the assembly process of the single-headed jack with a switch of this invention, in the case of three terminals similar to the one shown in FIG. and a first and second insulating member forming a casing that surrounds the side of the tip of the plug to be inserted, for example, an insulating housing member, and a cover member also insulating. It is possible to assemble a single-headed jack with a switch just by using the specified parts, and the assembly process is also simple.
It is extremely simplified as will be explained in detail later.

Next, embodiments of the single-headed jack with switch of this invention will be described in detail with reference to the drawings.

1 to 3 are structural diagrams showing the detailed structure of an embodiment of the single-headed jack with a switch of this invention, in which 1 is a top view, 2 is a side view, and 3 is a front view. In the drawing, 1 is a housing member which is a first insulating member, 11 is a plug insertion hole provided in the housing member 1, 2 is a cover member which is a second insulating member, and 31 to 33 are terminal fittings. , earth spring, break terminal, and chip spring are shown.

The following Figures 2 1 and 2 show the detailed structure of the continuous terminal fittings that constitute the earth spring, break terminal, tip springs 31 to 33, etc. of the single-headed jack with switch of this invention shown in Figure 1. In the figures, 1 is a top view and 2 is a side view. Reference numerals in the drawings are the same as in FIG. 1, and 3 is a continuous terminal fitting, 34 is a guide hole thereof, and 35 to 37 are holes that engage with bosses (23 to 25) of the cover member 2, respectively. .

In the single-headed jack with a switch of this invention, first, as shown in FIG.
A strip-shaped continuous body in which a plurality of sets of terminal fittings such as No. 33 are connected, that is, a continuous terminal fitting 3 is manufactured.

For this purpose, a strip of tens of meters or more made of phosphor bronze or other elastic material is used.

First, punching is performed to create the original shape of the continuous terminal fitting 3 as shown in the top view in FIG.

The continuous terminal fittings 3 are terminal fittings arranged on one surface on one side with respect to the insertion direction of the plug, and in the initial punching process, a plurality of terminal fittings 31 to 33
are continuous with each other on the outside where the two holes 35 to 37 are formed, and the terminal fittings are formed in a substantially "U" shape inside the two holes 35 to 37, respectively. 31, and terminal fittings (break terminals) 32 and (tip springs) 33 formed in a substantially dogleg shape are created.

Generally, in punching, complicated bending is not possible, but some bending is possible, so in order to reduce the number of steps as much as possible, the terminal fitting 31 formed in an approximately "U" shape, The terminal fittings 32, 33, etc. formed in a dogleg shape are slightly deformed at this time.

Thereafter, the break terminal 32 is bent in the opposite direction (towards the tip spring 33) to form a continuous terminal fitting 3 as shown in a top view in FIG. 2 and in a side view in FIG. 2.

Therefore, a plurality of sets of terminal fittings each including a ground spring, a break terminal, chip springs 31 to 33, etc. are manufactured in a state in which they are mechanically and electrically connected to each other.

Note that the continuous terminal fitting 3 in which the earth spring, break terminal, and tip spring are formed in a hoop shape is inserted through a suitable cushioning material, such as two pieces of cardboard, etc.
By winding it around a reel, it is possible to prevent the terminal fitting from being undesirably deformed, which may occur during transportation or processing.

FIGS. 3 1 to 7 are structural diagrams showing the detailed structure of the housing member 1 constituting the single-headed jack with switch of this invention shown in FIG.
1 is a top view, 2 is a front view, 3 is a side view, 4 is a back view, 5 is a bottom view, 6 is an AA sectional view of 3, and 7 is a BB sectional view of 3. Reference numerals in the drawings are the same as those in FIG. 1, and 12 to 14 indicate side walls constituting the side surfaces of the casing, and 15 to 17 indicate holes that engage with bosses 23 to 25 of the cover member 2.

The housing member 1 constituting the single-headed jack with a switch of this invention has a plug insertion hole 11 and side walls 12 to 14 forming three sides of the casing, as shown in FIGS. 3, 1 to 7, Additionally, holes 15 to 17 are provided that engage with bosses 23 to 25 provided on the cover member 2, respectively.

4 1 to 5 show the cover member 2 constituting the single-headed jack with switch of this invention shown in FIG. 1.
, 1 is a top view, 2 is a front view, 3 is a side view, 4 is a rear view,
5 is a bottom view. Reference numerals in the drawings are the same as in FIG. 1, and 21 is one wall surface of the casing provided in the cover member 2, for example, the bottom surface, 22 is a recessed portion,
23 to 25 indicate bosses.

The housing member 1 constituting the single-headed jack with a switch of this invention has side wall portions 12 to 12 forming the side surfaces of the housing, as shown in FIGS. 3 to 7.
14 and holes 15 to 17 that engage with bosses 23 to 25 of the cover member 2 are provided. The recess 22 is a gap necessary for the contact between the break terminal 32 and the tip spring 33 forming the switch mechanism to operate.

The single-headed jack with a switch of this invention is the second
In the case of three terminals as shown in FIGS. 4 to 4, it is composed of three parts. That is, as the first part, the continuous terminal fitting 3 that constitutes the earth spring including the terminal fitting that constitutes the switch mechanism, the break terminal, the tip springs 31 to 33, etc. is used, and as the second part, the tip of the plug to be inserted is used. An insulating housing member 1 forming a casing surrounding the sides of the housing, and one cover member 2 as a third component are used.

When assembling a single-headed jack with a switch, pull out a part of the hoop-shaped continuous terminal fitting 3 wound around a reel or the like by the required length, and attach one housing member 1 and one cover member 2 to each other. Then,
Both sides of the continuous terminal fitting 3 are held. That is, the housing member 1 and the cover member 2 sandwich one set of the earth spring, break terminal, and tip springs 31 to 33 forming each terminal fitting.

Thereafter, the housing member 1 and the cover member 2 are integrally fixed by welding or the like, and then the unnecessary continuous portion of the continuous terminal fitting 3 is cut off, and the lead terminal forming portion is bent.

Through such a work process, a single-headed jack with a switch can be manufactured simply and accurately.

In addition, in this assembly process, the guide hole 34 provided in the continuous terminal fitting 3
It is used for feeding control when feeding continuously and for positioning the housing member 1 and cover member 2. Further, the holes 35 to 37 are provided at positions corresponding to the holes 15 to 17 of the housing member 1, respectively, so that when the bosses 23 to 25 of the cover member 2 are inserted into the holes 15 to 17 of the housing member 1, , the housing member 1 and the cover member 2 function so that both sides thereof are sandwiched.

Next, an example of a method for assembling the single-headed jack with a switch of this invention will be explained.

5. FIGS. 1 to 3 are structural diagrams showing the detailed configuration for explaining the method of assembling the single-headed jack with a switch of this invention in the case of the three terminals shown in FIG. 1. 1 is a top view; 2 is a side view, and 3 is a front view. The reference numerals in the drawings are the same as in FIGS. 2 to 4.

First, one set of continuous terminal fittings 3, that is, one earth spring, one break terminal, and one chip spring 31 to
33, one housing member 1 and one cover member 2
Temporary assembly is performed by holding it in a predetermined position.

In this state, as shown in FIGS. 1 to 3, the continuous terminal fitting 3 has not yet been separated.

Therefore, one set of the earth spring, the break terminal, and the tip springs 31 to 33 are each accurately held at a predetermined position.

After this temporary assembly step, the housing member 1 and the cover member 2 are fixed together, for example, by ultrasonic welding or the like. Through this welding process, the holes 15 to 17 of the housing member 1 and the bosses 23 to 25 of the cover member 2 are
are integrally welded and fixed.

Next, the continuous terminal fitting 3 is further punched to separate the continuous portion, and the fifth
The hatched portion in FIG. 1 is cut away, and the lead terminal forming portion is bent.

Note that if a half blank, that is, a groove for cutting or the like is provided in advance in this cut-off portion, the cut-off can be easily made. Further, the hoop-shaped continuous terminal fitting 3 is suitable for automation if it is wound around a reel or the like and supplied to a predetermined position during a necessary assembly process.

As a result, the lead terminal forming portions of the plurality of terminal fittings constituting one set, such as the earth spring, break terminal, and tip springs 31 to 33, become independent from each other, and the switch mechanisms are electrically contacted, and the other A circuit as shown in FIG. 12 is formed by maintaining an insulated state between the terminal and the terminal.

By simply performing such a simple assembly operation, a set of continuous terminal fittings 3 that constitute the earth spring, break terminal, tip springs 31 to 33, etc. of a single-headed jack with a switch can be assembled using the housing member 1 and the cover member 2. They are directly clamped and held precisely in place, independent of each other.

Moreover, the printed circuit board side of the single-headed jack with a switch is completely covered by the bottom surface portion 21 of the cover member 2. This point is especially important for ultra-compact single-head jacks with switches, and when incorporated into a printed circuit board, it completely prevents flux from entering due to capillary action, which can cause failures, and significantly improves reliability. be done.

FIGS. 6 1 to 3 are structural diagrams showing the detailed mechanism of another embodiment of the single-headed jack with a switch of this invention, in which 1 is a top view, 2 is a side view, and 3 is a front view. Reference numerals in the drawings are the same as in FIG. 1, 4 is a housing member which is a first insulating member, 41 is a plug insertion hole provided in the housing member 4, and 5 is a cover which is a second insulating member. Shows the parts.

In the embodiment of the single-headed jack with switch of this invention shown in FIGS. 6 1 to 3, the shape of the lead terminal forming portion of the pair of terminal fittings constituting the earth spring, break terminal, tip springs 31 to 33, etc. is as follows. This embodiment is different from the embodiments shown in FIGS. 1 to 4 above.

Further, the single-head jack with switch of this invention of the embodiment shown in FIGS. 6 1 to 3 has a housing member 4 as a first insulating member and a cover member 5 as a second insulating member. The shape is also different from the embodiments shown in FIGS. 1 to 4 above. However, the circuit configuration etc. are all the same as in the previous embodiment.

First, the housing member 4, which is the first insulating member, will be explained.

FIGS. 7 1 to 5 are structural diagrams showing the detailed structure of the housing member 4 constituting the single-headed jack with switch of this invention shown in FIG.
1 is a top view, 2 is a front view, 3 is a side view, 4 is a rear view, and 5 is a bottom view. The number in the drawing is the 6th
It is the same as the figure, and 42 is a recessed part, 43 is a bottom part of the housing member 4 constituting one wall surface of the casing,
44 to 46 indicate bosses.

As shown in FIGS. 1 to 5, the housing member 4 constituting the single-headed jack with a switch of this invention has a plug insertion hole 41 and a side wall forming one side of the housing, for example, a bottom surface portion 43. has and also
Holes 35 to 37 provided in the continuous terminal fitting 3;
Bosses 44 to 46 that engage with each other are provided.

The following Figs. 8 1 to 7 are structural diagrams showing the detailed structure of the cover member 5 constituting the single-head jack with switch of this invention shown in Fig. 6.
1 is a top view, 2 is a front view, 3 is a side view, 4 is a rear view, 5 is a bottom view, 6 is a CC sectional view of 3, and 7 is a DD sectional view of 3. Reference numerals in the drawings are the same as those in FIG. 6, and 51 to 53 indicate side wall portions constituting the side surfaces of the housing, and 54 to 56 indicate holes that engage with bosses 44 to 46 of the housing member 4.

The cover member 5, that is, the second insulating member constituting the single-headed jack with a switch of this invention, is as follows:
As shown in FIGS. 1 to 7, side walls 51 to 53 forming the side surfaces of the casing and holes 54 to 5 engaging with bosses 44 to 46 of the housing member 4 are shown.
6.

In the above embodiment, one set of three terminal fittings has three terminal fittings.
The case of a terminal configuration, that is, the case where an earth spring, a break terminal, and chip springs 31 to 33 are provided has been described. However, the number of terminal fittings constituting one set is not necessarily limited to three, and a single-headed jack with a five-terminal switch is also known, as shown in the circuit of Figure 13 above. .

Next, an embodiment of the single-headed jack with a switch according to the present invention will be described in the case of five terminals.

FIG. 9 is a structural diagram of the main parts showing the mutual positions of the earth spring, break terminal, chip spring, etc. and the relationship with the inserted plug in the case of five terminals in the single-headed jack with switch of this invention. The symbols in the drawing are the same as in FIG. 2, and 6 is the second continuous terminal fitting, 61 is the break terminal,
62 is a ring spring, 7 is a plug, 71 is its ground portion, 72 is a ring portion, and 73 is a tip portion.

In the case of a 5-terminal single-head jack with a switch, as shown in Figure 9, a set of earth springs, break terminals, and
In addition to the first continuous terminal fitting 3 that constitutes each terminal fitting of the tip springs 31 to 33, another set of break terminals 61 and a ring spring 62 is configured.
A second continuous terminal fitting 6 is required.

The first continuous terminal fitting 3 and the second continuous terminal fitting 6 are connected to a plug 7 inserted in the direction of the white arrow.
It is arranged at a position where it makes accurate contact with the grounding part 71, ring part 72, and tip part 73 of.

In this case, the shape of the second continuous terminal fitting 6 is basically the same as the shape of the first continuous terminal fitting 3 shown in FIGS. 1 and 2 above, and its earth spring 3
This corresponds to the one with 1 removed. However, this earth spring may be provided on the second continuous terminal fitting 6 side, and in this case, the first continuous terminal fitting 3 side becomes unnecessary, but the earth spring 31 may remain attached.

10 1 and 2 are shown in the circuit of FIG. 13.
1 is a structural diagram showing the structure of the single-headed jack with a switch of this invention in the case of a terminal, for explaining the assembly process thereof; 1 is an exploded front view, and 2 is an exploded bottom view. Reference numerals in the drawings are the same as in FIGS. 2 and 9, and 8 indicates a housing member which is the first insulating member, and 9 and 10 indicate cover members which are the second and third insulating members. .

As already explained, in the case of 5 terminals, the earth spring, break terminal, and chip springs 31 to 33
A first continuous terminal fitting 3 with a break terminal 61 and a second continuous terminal fitting 6 with a break terminal 61 and a tip spring 62 are required.

These first and second continuous terminal fittings 3 and 6
As shown in FIGS. 1 and 2, it is fed from both sides of the housing member 8 and is sandwiched between cover members 9 and 10, which are second and third insulating members.

After that, as in the case of the previous three terminals, the housing member 8 and the cover members 9, 10 are integrally fixed by welding or the like, and the unnecessary continuous parts of the continuous terminal fittings 3, 6 are cut off. , bending the lead terminal forming portion, etc.

In the case of this five terminal as well, the cover members 9 and 10 are provided with a plurality of bosses as in the case of FIG. 3, and the housing member 8 is provided with a plurality of bosses.
Holes are provided at positions corresponding to these bosses.

In the case of FIGS. 1 and 2, two continuous terminal fittings 3, 6, one housing member 8,
A five-terminal, single-head jack with a switch is manufactured using a total of five parts, including the cover members 9 and 10.

The assembly process is similar to the three-terminal case described in connection with FIG.

In the above embodiment, the housing member 1 (or 4, 8), which is the first insulating member, and the second
The cover member 2 (or 5, or the second and third insulating members 9 and 1)
As the welding method with 0), the case of ultrasonic welding was explained. However, it is not always necessary to use ultrasonic welding, and known fixing methods such as welding and melting can also be used.

For example, in FIG. 3 of the first embodiment, the holes 15 to 17 provided in the housing member 1 are formed as through holes, and the bosses 23 to 25 provided in the cover member 2 in FIG. 4 are extended. , with its head protruding from the holes 15 to 17 of this housing member 1,
The housing member 1 and the cover member 2 may be integrally fixed by melting the protruding heads of the bosses 23 to 25.

Furthermore, instead of the fixing method such as welding or melting, it is also possible to fix using a mechanical fixing method, for example, so-called nail fixing.

The following FIG. 11 is a perspective view showing an example of the construction of essential parts of a method of fixing the housing member 1 and the cover member 2 constituting the single-head jack with switch of the present invention shown in FIG. 1. In the drawings, reference numeral 18 indicates a claw portion, and reference numeral 26 indicates a locking hole for the claw.

As shown in FIG. 11, in the first embodiment,
The housing member 1 may be provided with a claw portion 18, and the cover member 2 may be provided with a claw locking hole 26, so that when the housing member 1 and cover member 2 are assembled, they are press-fitted and fixed. .

Further, although FIG. 11 shows an example in which the housing member 1 is provided with the pawl portion 18 and the cover member 2 is provided with the pawl locking hole 26, conversely, the housing member 1 is provided with the pawl locking hole 26. It goes without saying that the cover member 2 may be provided with a claw portion.

In the above embodiments, in the case of 3 terminals and 5 terminals, that is, the earth spring, break terminal, and chip spring 3.
The case where each of 1 to 33 constitutes three terminals and the case where five terminals are constituted have been described.

However, as is well known, the number of terminal fittings constituting one set does not necessarily have to be three or five, and it is clear that the same implementation can be carried out with any number of terminal fittings greater than or equal to two. , multiple continuous terminal fittings may be used as necessary.

As described above in detail by illustrating the case of 3 terminals as the first and second embodiments and the case of 5 terminals as the third embodiment, the single head jack with switch of this invention has a The shapes of the first and second (and third) insulating members forming the casing that surrounds the sides of the plug tip can be selected relatively freely. That is, the shape may be the housing member 1 and the cover member 2 as in the first embodiment, or the shape as the housing member 4 and the cover member 5 as in the second embodiment. , Furthermore, as in the third embodiment,
The housing member 8 and the cover members 9 and 10 may have a similar shape.

Therefore, the shapes, names, etc. of the first insulating member and the second insulating member are relative, and in short, the casing that surrounds the side of the tip of the plug to be inserted. If it is an insulating member that forms
It is possible to combine members of arbitrary shapes.

In addition, in the first embodiment shown in FIG. 4, a recess 22 is provided in one surface of the cover member 2, that is, in the bottom surface portion 21 that constitutes one wall surface of the casing. The case where the terminal 32 and the tip spring 33 are formed so as to be able to be connected to each other has been described. Such a recess 22
By providing this, the overall height can be reduced.

However, the position where the housing member 1 and the cover member 2 are joined is left as is, and instead of providing the recess 22 in the cover member 2, the bottom surface portion of the cover member 2 is
1 is changed so that its cross section becomes, for example, the 4th one.
If you make it into a “U” shape in the direction seen from Figures 2 and 4,
The tip spring 32 can be moved during discontinuation. Therefore, it is clear that it is not always necessary to provide the cover member 2 with such a recess 22, and that various modifications can be made.

Effects of the invention According to the single-headed jack with a switch of this invention, the number of parts used is reduced, and at the same time, the assembly work process is extremely simplified and accurate assembly is possible.

Moreover, each terminal fitting such as the earth spring, break terminal, and chip spring is reliably held in a predetermined position in a continuous state during temporary assembly, and is also held in a predetermined position by the process of cutting off unnecessary parts after assembly. Reliably held in position independently.

In addition, since the shape of the continuous terminal fittings has been improved, sufficient elasticity can be obtained even with ultra-small terminal fittings, and each of these terminal fittings has
a housing member which is a first insulating member;
Since it is held, fixed and held in an accurate position by the cover member which is the (or third) insulating member, it is possible to make good contact with the plug.

Furthermore, the mold between the housing and the terminal is melted by ultrasonic welding, for example, so that it is almost completely sealed, and no flux can infiltrate between the terminal and the mold. .

Furthermore, the printed circuit board side of the single-head jack with a switch, that is, the lead terminal drawer side, is completely covered by one side of the casing, for example, the bottom of the housing member or cover member.
This prevents flux, etc. from entering the inside of the single-headed jack with a switch when assembling it to a board, etc.
Reliability is improved.

Furthermore, with the reduction in the number of parts used and the simplification of the assembly work process, the yield is significantly improved, and at the same time, it is fully compatible with the automation of the assembly process, so it is extremely advantageous in terms of cost. Many excellent practical effects can be obtained.

[Brief explanation of the drawing]

1 to 3 are structural diagrams showing the detailed structure of an embodiment of the single-headed jack with a switch of this invention, in which 1 is a top view, 2 is a side view,
3 is a front view, and FIGS. 2 and 2 are detailed configurations of the continuous terminal fittings constituting the earth spring, break terminal, tip springs 31 to 33, etc. of the single-headed jack with switch of this invention shown in FIG. 1 is a top view, 2 is a side view,
FIGS. 3 1 to 7 are structural views showing the detailed structure of the housing member 1 constituting the single-headed jack with switch of this invention shown in FIG. 1, in which 1 is a top view and 2 is a front view. 3 is a side view, 4 is a rear view, 5 is a bottom view, 6 is an A-A sectional view of 3, 7
3 is also a sectional view taken along line B-B of FIG. 1 is a top view, 2 is a front view, 3 is a side view, 4 is a back view, and 5 is a bottom view. FIGS. 6A and 6B are structural diagrams showing detailed configurations for explaining the method of assembling a single-headed jack with a switch, in which 1 is a top view, 2 is a side view, 3 is a front view, and FIGS. 7 is a structural diagram showing the detailed structure of another embodiment of a single-headed jack with a switch, 1 is a top view, 2 is a side view, 3 is a front view, and FIGS. 1 to 5 are as shown in FIG. 2 is a structural diagram showing the detailed structure of the housing member 4 constituting the single-head jack with switch of this invention shown in FIG. 1, in which 1 is a top view, 2 is a front view,
3 is a side view, 4 is a rear view, 5 is a bottom view, Fig. 8 1
7 is about the cover member 5 constituting the single-headed jack with switch of this invention shown in FIG.
1 is a top view, 2 is a front view, 3 is a side view, 4 is a back view, 5 is a bottom view, 6 is a C-C sectional view of 3, and 7 is a structural diagram showing the detailed configuration. 3 and FIG. 9 are key points showing the mutual positions of the earth spring, break terminal, chip spring, etc. and the relationship with the inserted plug in the case of 5 terminals in the single-headed jack with switch of this invention. 1 and 2 are structural diagrams showing the configuration for explaining the assembly process of the single-headed jack with a switch of this invention in the case of the five terminals shown in the circuit of FIG. 13. 1 is an exploded front view, 2 is an exploded bottom view, and FIG. 11 shows a method of fixing the housing member 1 and cover member 2 that constitute the single-headed jack with a switch of this invention shown in FIG. FIG. 12 is a perspective view showing an example of the configuration of the main parts, and FIG. 13 is a circuit diagram of the single-head jack with switch showing the relationship between the single-head jack with a switch having three terminals and the plug to be inserted. 14 is a circuit diagram of a single-head jack with a switch, showing the relationship between the single-head jack with a switch and the inserted plug, which has five terminals.
These are structural diagrams showing the detailed structure of a conventional single-headed jack with a switch having five terminals, in which 1 is a front view, 2 is a rear view, 3 is a side view, and 4 is a bottom view. In the drawings, 1 is a housing member which is a first insulating member, 11 is a plug insertion hole provided in the housing member 1, 12 to 14 are side walls forming the side surfaces of the housing, and 15 to 17 are cover members 2. 18 is a claw portion, 2 is a cover member which is a second insulating member, and 21 is a wall surface of the casing provided in the cover member 2, for example, a bottom surface, 22 is a recess, 23 to 25 are bosses, 26 are locking holes for claws, 3 is a continuous terminal fitting, 31 to 33 are terminal fittings, an earth spring, a break terminal, a tip spring, 34 is a guide hole thereof, and 35 to 37 are terminal fittings. Holes that engage with the bosses 23 to 25 of the cover member 2, respectively;
4 is a housing member, 5 is a cover member, 6 is a second
Continuous terminal fittings, 8 is a housing member, 9 and 10
is a cover member.

Claims (1)

[Claims for Utility Model Registration] A plurality of terminal fittings 31 to 33 including terminal fittings 32 and 33 constituting a switch mechanism, and insulating casings 1 and 2 that surround the sides of the plug tip to be inserted.
In the single-headed jack with a switch, each of the plurality of terminal fittings 31 to 33 has two holes 35 to 37, and the two holes 35 to 37 are connected to a plug. A pair of terminal fittings 32 and 33, which are arranged on one surface on one side with respect to the insertion direction and constitute the switch mechanism, are arranged in the two holes 36 on one surface on one side with respect to the insertion direction of the plug. , 37, almost "ku"
The substantially dogleg-shaped portion of one terminal fitting 32 is formed in the shape of the letter ``.''
3 is bent in a direction opposite to the direction in which the terminal fitting 3 is formed into a substantially dogleg shape.
3, and the plurality of terminal fittings 31 to 33 have two holes 35 to 37, respectively.
are continuous with each other on the outside where the housings 1,
The plurality of terminal fittings 31 to 33 are formed by cut portions of continuous parts that are cut after being fixed to 2 and have mutually independent terminal parts, and the housing member and the cover member allow the plurality of terminal fittings 31 to 33 to A single-headed jack with a switch, comprising: the casings 1 and 2 that sandwich the terminal portions of the terminal fittings 31 to 33.