JPH0211743Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a connector used, for example, for connecting a power supply cable of an automobile antenna, and particularly relates to an improvement in the plug structure.

[Prior Art] A conventional connector of this type is one in which a plug is attached to the end of a power supply cable of an automobile antenna, and the plug is inserted into a jack on the transmitter/receiver side at the appropriate time to establish a connection. It is becoming. The above-mentioned plug generally has a structure in which an insertion pin is implanted at the tip of an insulating cylindrical body, and a spring is provided protruding from the outer periphery of the insulating cylindrical body to come into pressure contact with the inner peripheral surface of the jack.

[Problems to be solved by the invention] However, the above-mentioned conventional antenna device had the following problems. That is, in general, this type of plug has a very large spring pressure, so it is not easy to insert the plug into the jack, and there is no way to clearly confirm whether the plug is completely inserted into the jack. For this reason, it is easy for the plug to be inserted insufficiently, and moreover, the plug is often used without noticing that it is not fully inserted. Use under such conditions increases the contact resistance at the connection portion, making it impossible to perform good transmission and reception, and in extreme cases, there is a risk that the plug may fall off during use.

Therefore, the present invention makes it possible to clearly check whether the plug is completely inserted into the jack.
The purpose of the present invention is to provide a connector that is free from the risk of poor contact due to incomplete insertion or accident of the plug falling off during use.

[Means for Solving the Problems] The present invention is characterized by taking the following measures in order to solve the above problems and achieve the purpose. In other words, the connector of the present invention includes a first cylindrical body made of synthetic resin, which has an insertion pin implanted at its tip and has an engaging part on its outer periphery that can be elastically deformed and engaged with a locking part on the jack side. and an engagement release part that applies a deflecting force to the engaging part of the first cylindrical body so as to disengage the engaging part of the first cylindrical body from the locking part on the jack side. a second cylindrical body made of synthetic resin having a second cylindrical body is coupled and fixed thereto, and a spring that can be pressed against the inner circumferential surface on the jack side in connection with the coupling between the second cylindrical body and the first cylindrical body; It is characterized by being locked and fixed.

[Operation] By taking the above measures, only when the plug is completely inserted into the jack, a relatively large click feeling is transmitted to the fingers due to the engagement between the locking part and the engaging part. , the plug cannot be pulled out from the jack unless the engaged state is released by the engagement release portion.

[Embodiment] FIGS. 1 to 6 are diagrams showing an embodiment in which the present invention is applied to a power supply cable connector for an automobile antenna.

As shown in FIG. 1, the insertion plug 10 includes not only an insertion pin 11 and a contact piece 12 which is a part of a spring, but also engagement protrusions 13a and 13b as a part of an engagement part and a part of a disengagement part. It has engagement release projections 14a and 14b as parts. 1
5 is a power supply cable for an automobile antenna.

On the other hand, in the lead type jack 20, the open end of a sleeve 22 made of a conductor inserted into an outer cylinder 21 is drawn inward to form a drawn part 23, which serves as a locking part. . 24 is a connection cable for connecting with a transmitter/receiver.

2 to 5 a and b are diagrams showing the structure of the plug 10. FIG. As shown in FIGS. 2 to 5 a and b, the cylindrical body of the plug 10 is a first cylindrical body 30 and a second cylindrical body 40 made of synthetic resin, which are bonded and fixed together. An insertion pin 11 is implanted at the tip of the first cylindrical body 30. The base end of the first cylindrical body 30 is open. On the outer periphery of the first cylindrical body 30, there are engaging arms 31, 32 having engaging protrusions 13a, 13b formed on the outer surface as engaging parts that can be elastically deformed and engaged with the locking part on the jack side. It is provided. A tapered surface M is formed at the free ends of the engagement arms 31, 32. Disengagement arm insertion grooves 33a, 33b are formed between the positions where the engagement arms 31, 32 are provided and the openings. A spring insertion groove 34 is provided at a position offset by 90 degrees in the circumferential direction from the area where the disengagement arm insertion grooves 33a and 33b are provided. A fixing hole 35 is provided at a position facing the spring insertion groove 34. The outer peripheral surface of the first cylindrical body 30 near the open end has a slightly smaller diameter. 36 is a stepped portion caused by the difference in diameter.

The second cylindrical body 40 is formed to be able to fit onto the outer periphery of the small diameter portion near the open end of the first cylindrical body 30, and has an engaging portion of the first cylindrical body 30 at one end thereof. Disengagement arms 41 and 42 having disengagement protrusions 14a and 14b on their outer surfaces are provided as disengagement sections that apply a force to deflect the engagement section so as to disengage it from the locking section on the jack side. has been done. A tapered surface N is formed at the free ends of the disengagement arms 41, 42. The tapered surface N allows the second cylindrical body 40 to be inserted into the first cylindrical body when the disengagement arms 41 and 42 are inserted into the disengagement arm insertion grooves 33a and 33b of the first cylindrical body 30. 3
0, it comes into contact with the tapered surfaces M of the engaging arms 31 and 32, as shown in FIGS. 2 and 3. Thus, when the disengagement projections 14a, 14b are pressed as shown by the solid line arrows in FIG. The projections 13a, 13b can be disengaged from the locking portion on the jack side to release the engaged state.

A spring 50 is locked and fixed in connection with the connection between the second cylindrical body 40 and the first cylindrical body 30. That is, the spring 50
As shown in FIG. 4, the elastic member is curved into a C-shape so that the proximal end inserted into the first cylinder 30 can be inserted tightly into the inner circumferential surface of the first cylinder 30. It is molded and provided with a notch 51. A fixing protrusion 52 that fits into the fixing hole 35 is formed at this base end, as shown in FIGS. 5a and 5b. A contact piece 12 made of a strip-shaped leaf spring with a central portion bulging outward is provided at one end edge of the base end so as to be insertable into the spring insertion groove 34.

In this embodiment configured as described above, when the insertion plug 10 is inserted into the reed type jack 20, the engaging protrusions 13a and 13b are elastically deformed by the engaging arms 31 and 32, so that the constricted portions of the reed type jack 20 are closed. It passes through 23. and,
After the engagement protrusions 13a and 13b have passed, the sixth
When it enters the inside of the constricted portion 23 as shown in the figure, it is restored to its original state by the elasticity of the engaging arms 31 and 32 and becomes engaged with the constricted portion 23. At this time, a relatively large click feeling generated when the engaging protrusions 13a, 13b are restored by the restoring force of the engaging arms 31, 32 is transmitted to the fingers, so that it can be confirmed that the insertion has been completed. Further, after the above state is reached, even if you try to pull out the plug 10, the engaging protrusions 13a and 13b are locked by the constricted portion 23, so it is impossible to pull out the plug 10. Can not. At this point as well, complete insertion of the plug 10 can be confirmed. When it is necessary to pull out the plug 10 from the reed jack 20, press the disengagement protrusions 14a, 14b to release the engagement protrusion 13.
a, 13b may be placed in a state where they are deviated in the axial direction of the first cylindrical body 30, and may be allowed to pass through the constriction portion 23.

FIG. 7 is a partially cutaway side view of another embodiment of the present invention. The embodiment shown in FIG. 7 differs from the previous embodiment in that a flange-type jack 60 is used as the jack. This flange type jack 60 has a locking hole 61 in the wall surface of the cylinder as a locking part.
62, and the engaging projections 13a, 13b are configured to engage with the locking holes 61, 62. The mutual positional relationship is set so that the protrusions of the engaging protrusions 13a and 13b project slightly outward from the flange-shaped jack 60 through the locking holes 61 and 62 when engaged.

According to this embodiment configured in this way, the protrusions of the engagement protrusions 13a and 13b pass through the locking holes 61 and 62 and connect to the flange-shaped jack 60 during engagement.
Since the plug 10 protrudes slightly outward from the locking holes 61 and 62, inserting the plug 10 into the flange type jack 60 while placing your fingers on the outside of the locking holes 61 and 62 will ensure complete insertion. When inserted, the tips of the engagement protrusions 13a, 13b come into direct contact with the fingers, so that in addition to the above-mentioned click feeling, complete insertion of the plug 10 can be confirmed even more reliably. Other than the above points, this embodiment is the same as the embodiment described above, so a description thereof will be omitted.

Note that the present invention is not limited to the above embodiments. For example, in the embodiment described above, the engagement protrusions and the disengagement protrusions are 13a, 13b and 14a,
Although the case where two sets such as 14b are provided is shown, only one set may be provided. If the engagement mechanism is provided only on one side like this,
Although the locking force is slightly inferior to that of the previous embodiment, the axis of the plug 10 changes between immediately before and after the engagement protrusion engages with the locking portion. As a result, there is an advantage that the click feeling is enhanced by the change in the axis. Furthermore, when the above-mentioned means is applied to the embodiment shown in FIG. 7, since it is only necessary to provide the engaging arm on one side, it is possible to set the deflection amount of the engaging protrusion to be larger. Therefore, the amount by which the tip of the engagement protrusion projects from the locking hole can be increased, and the feel against the fingers can be increased. Further, in the above embodiment, the engagement protrusions 13a and 13b are used as the engagement parts, and the protrusions engage with the locking parts made of recesses. The recess may be engaged with a protruding locking portion. It goes without saying that various other modifications can be made without departing from the gist of the present invention.

[Effects of the invention] The connector of the invention has a synthetic resin connector having an insertion pin implanted at the tip and an engaging part on the outer periphery that can be elastically deformed and engaged with the locking part on the jack side. 1
A cylindrical body is provided at the proximal end of the first cylindrical body, and a locking member is provided at the base end of the first cylindrical body to apply a deflecting force to the engaging portion of the first cylindrical body so as to disengage the engaging portion from the locking portion on the jack side. A second cylindrical body made of synthetic resin having a mating/uncoupling portion is coupled and fixed, and in connection with the coupling between the second cylindrical body and the first cylindrical body, the second cylindrical body is pressed against the inner circumferential surface on the jack side. It is characterized by a spring that can be locked and fixed.

Therefore, according to the present invention, only when the plug is completely inserted into the jack, a relatively large click feeling due to the engagement between the locking part and the engaging part is transmitted to the fingers, and the engagement is released. The plug cannot be pulled out of the jack unless the engaged state is released by the section. As a result, it is possible to clearly confirm whether or not the plug has been completely inserted into the jack, and a connector is provided that does not cause contact failure due to incomplete insertion or the accident of the plug falling off during use. be able to.

[Brief explanation of the drawing]

Figures 1 to 6 are diagrams showing an embodiment in which the present invention is applied to a power supply cable connector for an automobile antenna, and Figure 1 shows an example in which a plug and a lead type jack are combined. FIG. 2 is a perspective view of the plug; FIG. 3 is a partial cross-sectional view showing the relationship between the engagement protrusion and the disengagement protrusion;
Figure 4 is an exploded perspective view of the plug, Figures 5a and b are perspective views and partial sectional views showing the structure of the spring;
FIG. 6 is a partially cutaway side view showing a state in which the plug is inserted into the lead type jack. 7th
The figure is a partially cutaway side view of another embodiment of the present invention. 10... plug, 11... plug pin,
12... Spring contact piece, 13a, 13b...
Engagement protrusion, 14a, 14b... Disengagement protrusion, 15... Power supply cable, 20... Lead type jack, 21... Outer cylinder, 22... Sleeve, 23
... Throttle part, 24 ... Connection cable, 30 ... First cylindrical body, 31, 32 ... Engagement arm, 33
a, 33b... disengagement arm insertion groove, 34...
...Spring insertion groove, 35...Fixing hole, 36...
Step portion, 40... Second cylinder, 41, 42... Disengagement release arm, 50... Spring, 51...
Notch, 52... Fixing protrusion, 60... Flange type jack, 61, 62... Locking hole, 63, 64
...Mounting hole, 65...Connection terminal.

Claims (1)

[Scope of utility model registration request] a first cylindrical body made of synthetic resin having an insertion pin implanted at its tip and an engaging part on its outer periphery that can be elastically deformed and engaged with a locking part on the jack side;
an engagement release part which is coupled and fixed to the base end of the first cylinder and applies a deflecting force to the engaging part of the first cylinder so as to disengage the engaging part of the first cylinder from the locking part on the jack side; a second cylindrical body made of synthetic resin,
In connection with the connection between the cylinder body and the first cylinder body, a spring is latched and fixed to the first and second cylinder bodies and can be press-contacted to the inner circumferential surface on the jack side. connector.