JPH0587857U - Automotive adapter plug - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention has a plurality of axial fulcrums for the cigarette lighter, so that it does not resonate with the vibration of the vehicle, and therefore falls off the cigarette lighter. It is an object of the present invention to provide a vehicle-mounted adapter plug. [Structure] A substantially cylindrical body 11 to be inserted into a cigarette lighter of an automobile, and a contact portion 12 provided at the tip of the body.
And a plurality of leaf spring portions 13 provided on the side surface near the tip of the main body around the circumferential surface thereof and capable of elastically abutting the electrode portion provided on the inner side wall of the cigarette lighter.
In the in-vehicle adapter plug 10 including b, 13c, 13d, and 13e, the leaf spring portions adjacent to each other in the circumferential direction of the main body are positioned so that the leaf spring portions are in contact with the inner side wall of the cigarette lighter. The in-vehicle adapter plug is configured by being arranged so as to be displaced with respect to the direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a plug, which is to be inserted into a cigarette lighter in a so-called car battery adapter, for taking out a battery voltage of an automobile as a power source for various in-vehicle devices.

[0002]

[Prior Art]

 Conventionally, such an on-vehicle adapter plug is configured as shown in FIG. 3, for example. That is, in FIG. 3, the in-vehicle adapter plug 1 is provided inside the body 2 having a substantially cylindrical shape, the contact portion 3 provided at the tip of the body 2, and the vicinity of the tip of the body 2. It includes a spring member 4 also serving as an electrode, and a printed circuit board 5 provided inside the rear end of the main body 2 and electrically connected to the contact portion 3 and the spring member 4.

The printed circuit board 5 is provided with, for example, a DC voltage conversion circuit, and the output voltage thereof is supplied from the rear end of the main body 2 to various in-vehicle devices via the cord 6. I'm supposed to get it.

The contact portion 3 is fixed to the tip of the main body 2, and when the on-vehicle adapter plug 1 is inserted into a cigarette lighter of an automobile, one of the electrodes provided on the inner end surface of the cigarette lighter. The parts can be touched.

As shown in FIG. 4, the spring member 4 has an equal angle from the base 4 a (see FIG. 4A) fixedly held inside the tip of the main body 2 and the periphery of the base 4 a. It is composed of a plurality of leaf spring portions 4b, which are four in the illustrated case, which extend substantially rearward at intervals.

As shown in FIG. 4 (B), each leaf spring portion 4b extends rearward from the base 4a to the outside first and then to the inside diagonally, and the middle portion 4c has a "drum". When the vehicle-mounted adapter plug 1 is inserted into a cigarette lighter of an automobile, the protruding intermediate portion 4c is formed so as to protrude in a letter shape and protrudes outward from the side surface of the main body 2. , The other electrode portion provided on the inner side wall of the cigarette lighter can be elastically pressed.

As a result, the other electrode portion can be electrically contacted and can be stably held in the cigarette lighter against vibration, impact, and the like. .

[0008]

[Problems to be solved by the device]

 By the way, in the vehicle-mounted adapter plug 1 configured as described above, the leaf spring portions 4b of the spring member 4 have the same shape, and therefore, the intermediate portion 4c thereof is against the inner side wall of the cigarette lighter. The contact position is the same position in the axial direction of the in-vehicle adapter plug 1.

Therefore, when the vibration of the vehicle body is transmitted to the cigarette lighter while the vehicle is running or idling, this vibration is transmitted to the main body 2 via the intermediate portion 4c of each leaf spring portion 4b. The vibration can be absorbed to some extent by the elasticity of each leaf spring portion 4b.

However, since the main body 2 of the in-vehicle adapter plug 1 is supported at one point in the axial direction by each spring member 4b, when the vibration has a specific frequency, Cannot be absorbed by each spring member 4b, so that the main body 2 resonates, and in some cases, the main body 2 falls off from the cigarette lighter.

In view of the above points, the present invention does not resonate with the vibration of the vehicle by using a plurality of axial fulcrums for the cigarette lighter of the main body, and therefore, it does not fall off the cigarette lighter. The purpose is to provide an in-vehicle adapter plug that does not have any problems.

[0012]

[Means for Solving the Problems]

 According to the present invention, the above object is to provide a substantially cylindrical body to be inserted into a cigarette lighter of an automobile, a contact portion provided at a tip of the body, and a side surface near the tip of the body at a circumference thereof. An in-vehicle adapter plug, comprising: a plurality of leaf spring portions that are provided around a surface and that can elastically abut against an electrode portion provided on an inner side wall of a cigarette lighter. The inboard adapter plugs are characterized in that the leaf springs adjacent to each other in the circumferential direction are arranged so that the positions where they abut on the inner side walls of the cigarette lighter are displaced with respect to the axial direction of the main body. Is achieved.

[0013]

[Action]

 According to the above configuration, when the in-vehicle adapter plug is inserted in the cigarette lighter of the automobile, the leaf springs are provided at a plurality of fulcrums that are displaced in the axial direction of the body with respect to the inner side wall of the cigarette lighter. By elastically abutting it, the body is held inside the cigarette lighter, so when the vehicle is running or idling, the vibration of the vehicle body may not be transmitted to the cigarette lighter. However, each leaf spring absorbs this vibration.

Further, since there are a plurality of fulcrums, the leaf spring portion does not become unable to absorb the vibration with respect to the vibration of a specific frequency, and therefore the resonance of the main body is completely eliminated. As a result, the in-vehicle adapter plug will not fall off the cigarette lighter due to vibration.

[0015]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. FIG. 1 shows an embodiment of an in-vehicle adapter plug according to the present invention.

The on-vehicle adapter plug 10 also serves as a main body 11 formed in a substantially cylindrical shape, a contact portion 12 provided at the tip of the main body 11, and an electrode provided inside the tip of the main body 11. It includes a spring member 13 and a printed circuit board 14 provided inside the rear end of the main body 11 and electrically connected to the contact portion 12 and the spring member 13.

The printed circuit board 14 is provided with, for example, a DC voltage conversion circuit or the like, and the output voltage thereof can be supplied from the rear end of the main body 11 via the cord 15 to various in-vehicle devices and the like. It has become.

The contact portion 12 is fixed to the tip of the main body 11, and when the in-vehicle adapter plug 10 is inserted into a cigarette lighter of an automobile, one of the contact portions provided on the inner end surface of the cigarette lighter is provided. The electrode part can be contacted.

As shown in FIG. 2, the spring member 13 has an equal angle from the base 13a (see FIG. 2A) fixedly held inside the tip of the main body 11 and the periphery of the base 13a. It is composed of a plurality of leaf spring portions 13b, 13c, 13d, and 13e, which are four in the illustrated case and extend substantially rearward at intervals.

As shown in FIG. 2B, the leaf spring portions 13b, 13c, 13d, and 13e extend rearward from the base 13a toward the outside first, and then obliquely toward the inside, and the middle portion The portion 13f is formed so as to project in a V shape, and the projecting middle portion 13f projects outward from the side surface of the main body 11, so that the on-vehicle adapter plug 10 can be used as a vehicle cigarette lighter. When it is inserted into the cigarette lighter, it can be elastically pressed against the other electrode portion provided on the inner side wall of the cigarette lighter.

As a result, the other electrode portion can be electrically contacted and can be stably held in the cigarette lighter against vibration, impact, and the like. .

The above-mentioned configuration is similar to that of the conventional vehicle-mounted adapter plug 1 shown in FIG. 3, but in the vehicle-mounted adapter plug 10 according to the present invention, the leaf spring portions 13 b, 13 c, Of the 13d and 13e, the pair of leaf spring portions 13b and 13d facing each other are relatively long as shown in FIG. 2B (so that the distance from the base 13a to the intermediate portion 13f is x). The other pair of leaf spring portions 13c and 13e that are formed and are opposed to each other are relatively short (the distance from the base 13a to the intermediate portion 13f is y, as shown in FIG. 2C). Formed).

The vehicle-mounted adapter plug 10 according to the present invention is configured as described above, and when the vehicle-mounted adapter plug 10 is inserted into a car cigarette lighter (not shown), the leaf spring portions 13b, 13c, 13d and 13e elastically abut against the inner side wall of the cigarette lighter at a plurality of fulcrums that are displaced in the axial direction of the body, so that the body 11 is held inside the cigarette lighter. Become.

Therefore, even if the vibration of the vehicle body is transmitted to the cigarette lighter when the vehicle is running or idling, the leaf springs 13b, 13c, 13d, 13e are supposed to absorb the vibration. In addition, the axial position in which the pair of leaf spring portions 13b and 13d facing each other come into contact with the side wall of the cigarette lighter, and the axial direction in which the pair of leaf spring portions 13c and 13e facing each other come into contact with the side wall of the cigarette lighter. The main body 11 is supported by a plurality of fulcrums with respect to the cigarette lighter because it is axially displaced from the facing position.

As a result, the leaf spring portions 13b and 13d and the leaf spring portions 13c and 13e have different resonance frequencies, so that one pair of the leaf spring portions 13b and 13d is subjected to vibration of a specific frequency. Alternatively, even if 13c and 13e cannot absorb the vibration, the other pair of leaf spring portions 13c and 13e or 13b and 13d can absorb the vibration of the frequency.

Thus, it is possible to completely eliminate the resonance of the main body 11 with respect to the vibration from the vehicle body or the like, and the in-vehicle adapter plug 10 falls off from the cigarette lighter due to the vibration. There is no such thing.

In the above embodiment, the spring member 13 has four leaf spring portions 13b, 13d, 13c, 13e extending at equal intervals from the periphery, that is, extending in the quadrant direction. Not limited to this, for example, in the case of three equal parts, the same action and effect can be obtained.

Further, the leaf spring portions 13b, 13d, 13c, 13e are provided integrally with the base 13a. For example, the leaf spring portions 13b, 13d and the leaf spring portions 13c, 13e are separately provided. The leaf springs 13b, 13d, 13c, and 13e may be provided with a plurality of fulcrums with respect to the cigarette lighter because the intermediate portion 13f of the leaf springs 13b, 13d, 13c, and 13e is displaced in the axial direction that is in contact with the sidewall of the cigarette lighter. Any configuration that is supported by

[0029]

[Effect of the device]

 As described above, according to the present invention, since the main body has a plurality of fulcrums in the axial direction with respect to the cigarette lighter, it does not resonate with the vibration of the vehicle and accordingly falls off the cigarette lighter. It would be possible to provide an extremely superior in-vehicle adapter plug that has no

[Brief description of drawings]

1A and 1B are a horizontal sectional view and a vertical sectional view, respectively, showing an embodiment of a vehicle-mounted adapter flag according to the present invention.

2 shows a spring used in the vehicle-mounted adapter plug of FIG. 1, (A) is a front view, (B) is a plan view, and (C) is a side view.

FIG. 3A is a horizontal sectional view and FIG. 3B is a vertical sectional view showing an example of a conventional vehicle-mounted adapter plug.

4 shows a spring used in the vehicle-mounted adapter plug of FIG. 3, (A) being a front view and (B) being a plan view.

[Explanation of symbols]

 10 In-vehicle adapter plug 11 Main body 12 Contact part 13 Spring member 13a Base 13b, 13c, 13d, 13e Leaf spring part 13f Intermediate part 14 Printed board 15 Code

Claims (1)

[Scope of utility model registration request] 1. A substantially cylindrical body to be inserted into a cigarette lighter of an automobile, a contact portion provided at a tip of the body, and a side surface near the tip of the body around a circumferential surface thereof. And a plurality of leaf spring portions elastically abuttable on the electrode portion provided on the inner side wall of the cigarette lighter, a plate adjacent to the main body in the circumferential direction in a vehicle adapter plug. The in-vehicle adapter plug, wherein the spring portions are arranged such that the positions where they abut against the inner side wall of the cigarette lighter are displaced with respect to the axial direction of the main body.