JP2010020929A - Structure for fixation of cigar plug - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cigar plug and a cigar socket, wherein an operation for insertion or removal of a cigar plug into or from a cigar socket is easy and the cigar plug is not removed from the cigar socket while using them. <P>SOLUTION: This structure includes: press fixed members 58 that are movably disposed in a plurality of respective openings 34 formed at an equal angular interval in a sidewall of a plug body 12 of the cigar plug 10 in their radial directions; a spring material 56 that snapping-biases the press fixed member 58 in the direction of increasing the diameter so that a spreading width X of the press fixed member 58 is larger than the inner diameter R of a plug reception cylinder disposed in the cigar socket; and a switching member 20 that is disposed movably in its axial direction on the end of the plug body 12, bends the spring material 56 so that the spreading width X of the press fixed member 58 is smaller than the inner diameter R of the plug reception cylinder when moved toward the tip of the plug body 12 and moves to the opposite side by the snapping force of the spring material 56 to increase the diameter of the spring material 56 when unloading an external force. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an improvement in a structure for fixing a cigar plug for an automobile.

  In recent years, various retrofit electric devices (for example, in-car deodorizers, compact disc players, TVs, radios, home game consoles, car navigation systems, personal computers or small computers) Refrigerated / insulated boxes, etc.) are being used.

  The power source of these electric devices is mainly an automobile battery, and a retrofitted plug of the same diameter as the cigar plug provided at the tip of the power cord of the electric device is inserted into a cigar socket electrically connected to the battery. It is supplied with power.

  Here, the structure of a general cigar plug and cigar socket will be briefly described. As shown in FIG. 11, the cigar plug 1 protrudes from a rod-shaped plug body 2 and the tip of the plug body 2. The first contactor 3 and the second contactors 4 and 4 projecting on both sides from the side wall of the plug body 2 are provided. The second contactors 4 and 4 are always urged outward by a spring provided inside.

  On the other hand, the cigar socket 6 includes a cylindrical metal plug receiving cylinder 7, a terminal plate 8 provided on the bottom of the plug receiving cylinder 7 via an insulating material 8 a, and a casing 9 that accommodates these terminals. Have.

  When the cigar plug 1 is inserted into the plug receiving cylinder 7 of the cigar socket 6, the tip of the first contact 3 comes into contact with the terminal plate 8, and the outer surfaces of both the second contacts 4, 4 are the inner walls of the plug receiving cylinder 7. Abut. As described above, the second contacts 4 and 4 are always urged outward by the springs provided inside, and this is in combination with the appropriate dimensions of the plug body 2 with respect to the plug receiving cylinder 7. Thus, the cigar plug 1 is firmly held in the cigar socket 6 by this pressing biasing force.

  By the way, there is no standard for the size of cigar plugs and cigar sockets, and the actual situation is that the sizes differ slightly depending on the manufacturer. For this reason, since the dimensions of the plug main body 2 with respect to the plug receiving cylinder 7 are appropriate between genuine products of the same vehicle type, the pressing biasing force by the second contactors 4 and 4 works properly and there is a problem with the plug holding force. Even if the cigar plug 1 or the cigar socket 6 (or both) is not genuine, the dimensions of the plug body 2 with respect to the plug receiving cylinder 7 become inappropriate, and the second contactor 4, In some cases, the pressing urging force by 4 does not work properly, and the plug holding force may be hindered.

  That is, there may be used a retrofit electric device (including a retrofit cigar socket) provided with a cigar plug that can be mounted on the cigar socket in shape using the provided cigar socket. (1) When inserting a cigar plug-like retrofit plug of a retrofit electrical device as described above into a genuine genuine cigar socket, (2) When inserting a genuine plug into a retrofit socket of a retrofit electrical device, (3) Retrofit electrical device There are cases where other company's retrofit plugs are inserted into the retrofit sockets (hereinafter referred to simply as cigar sockets and cigar plugs, including genuine and retrofit). In this case, the dimensions of the plug receiving cylinder 7 with respect to the plug body 2 are delicate. If it is too large, the above-mentioned pressing force by the second contactors 4 and 4 cannot be sufficiently secured, resulting in poor contact. Stiffness, the extreme case, there is a problem such that cigar plug 1 by the vibration during operation resulting in shedded undesirably from cigarette lighter 6.

Therefore, conventionally, as shown in Patent Document 1, for example, a cylindrical plug fixing member is attached to a cigar plug, and the outer diameter of the plug fixing member gradually increases as the tip end side of the plug moves toward the knob portion of the plug. The cigar plug attached to the cigar socket is inserted into the cigar socket to increase the holding power of the cigar plug against the cigar socket, and the problem described above has been addressed.
JP-A-9-283231

  In the prior art, in order to increase the holding power of the cigar plug against the cigar socket, it is necessary to push the cigar plug with the plug fixing member firmly into the cigar socket, but if this pushing force is too strong, When trying to pull out from the cigar socket, there was a problem that it could not be pulled out easily.

  The present invention has been made in view of such conventional problems, and the cigar plug can be easily inserted into and removed from the cigar socket, and the cigar plug does not fall out of the cigar socket during use. It is to provide a fixed structure.

  The invention described in claim 1 is “a cigar plug fixing structure for fixing a cigar plug inserted into a cigar socket of an automobile, and a plurality of cigar plugs 10 formed at equiangular intervals on the side wall of the plug body 12 of the cigar plug 10. Each of the opening 34 is provided with a pressing fixing member 58 that is movable in the radial direction, and a spread width X of the pressing fixing member 58 is larger than an inner diameter R of the plug receiving cylinder provided in the cigar socket. When the spring member 56 that elastically urges the pressing and fixing member 58 in the diameter expansion direction and the rear end portion of the plug main body 12 to be movable in the axial direction are moved to the front end side of the plug main body 12. The spring member 56 is bent so that the spreading width X of the pressing fixing member 58 is smaller than the inner diameter R of the plug receiving cylinder, and when the external force is unloaded, the spring member 56 moves to the opposite side due to the elastic force. Further comprising a switching member 20 "to increase the diameter of the spring member 56 Te a fixed structure cigar plug characterized by.

  In this invention, when the cigar plug 10 is inserted into the cigar socket, the switching member 20 is operated to bend the spring material 56. When the spring material 56 is bent, the spreading width X of the pressing and fixing member 58 is narrowed and becomes smaller than the inner diameter R of the plug receiving cylinder. Therefore, when the cigar plug 10 is inserted into the cigar socket, the pressing and fixing member 58 does not hinder the insertion work.

  On the other hand, after inserting the cigar plug 10 into the cigar socket, the external force applied to the switching member 20 may be unloaded. For example, when the switching member 20 is pushed with a finger, the finger is released from the switching member 20. That's fine. Then, the spring material 56 expands its diameter by its elastic force and moves the pressing and fixing member 58 in the diameter expanding direction.

  Here, the spring member 56 elastically biases the pressing and fixing member 58 in the expanding direction so that the spreading width X of the pressing and fixing member 58 is larger than the inner diameter R of the plug receiving cylinder. In other words, even if the size of the cigar plug is inappropriate, the cigar socket is firmly pressed from the inside to the outside by the pressing fixing member 58, and thus the cigar plug 10 with respect to the cigar socket is secured. The holding power is increased.

  The invention described in claim 2 is as follows: "The spring material 56 has a plurality of blades 56b extending outward from the center of the plug so as to increase the distance from the plug rear end side toward the plug front end side. A recess 20d is formed at the plug tip end of the switching member 20, and the plug rear end side end of the blade 56b is recessed so that the outer surface of the blade 56b contacts the opening edge of the recess 20d. 20d ".

  The present invention is specific to the structure of the switching member 20 according to claim 1, and when the switching member 20 is pressed with a finger and moved to the distal end side of the plug body 12, the blade constituting the spring material 56. The outer surface of 56b is pushed by the opening edge of the recess 20d and bent while being inserted into the recess 20d, thereby narrowing the width X of the pressing fixing member 58. On the other hand, when the finger is released from the switching member 20, the spring member 56 expands the diameter while pushing out the switching member 20 by its elastic force to widen the spreading width X of the pressing fixing member 58, and the switching member 20 is moved by the pushing action. The plug 56 moves rearward along the outer surface of the blade 56b and returns to its original position. As a result, when the cigar plug 10 is attached to the cigar socket or when the cigar plug 10 is removed from the state where the cigar plug 10 is attached to the cigar socket, the switching member 20 can be easily inserted and removed simply by operating the finger. .

  The invention described in claim 3 is “a cigar plug fixing structure for fixing a cigar plug inserted into a cigar socket of an automobile, wherein both sides of the plug receiving cylinder 64 of the cigar socket 60, the plug insertion opening side or A pair of pressing fixing members 92 provided at positions opposite to each other so as to sandwich the cigar plug inserted into the plug receiving cylinder 64 on the opposite side, and a pair of pressing A spring material 90 that supports the fixing members 92 so as to be close to and away from each other, and is provided in the vicinity of the plug receiving cylinder 64 so as to be slidable in the axial direction. When the spring member 90 is bent so that the spreading width Y is smaller than the outer diameter M of the plug body 12 and is slid to the opposite side, the spreading width Y of the pressing fixing member 92 is increased. And it is characterized in that it comprises a switching member 70 which diameter the spring member 90 so as to be larger than the outer diameter M of the main body 12 '.

  In the present invention, the spread width Y of the pressing and fixing member 92 can be changed by sliding the switching member 70 in the axial direction of the plug receiving cylinder 64.

  That is, when the switching member 70 is slid to one side in the axial direction, the spring member 90 is bent and the spreading width Y of the pressing and fixing member 92 is narrowed, and the side wall of the cigar plug inserted into the cigar socket 60 is clamped from both sides. As a result, the holding force of the cigar plug with respect to the cigar socket 60 is increased.

  On the other hand, when the switching member 70 is slid to the opposite side, the spring material 90 is enlarged in diameter, and the spreading width Y of the pressing and fixing member 92 is larger than the outer diameter M of the plug body 12. Can be easily inserted and removed without any trouble.

  The invention described in claim 4 is as follows: “The spring member 90 is an elongated and flexible plate bent to have a substantially U-shaped cross section, and the switching member 70 has a narrow portion 71a formed at one end side. A plate-like member having a long hole 71 formed in a tapered shape so that an inner side surface 71c from the narrow-width portion 71a toward the wide-width portion 71b is gradually widened. The distal end portion 90a of the spring member 90 is fitted in the elongated hole 71 ".

  The present invention is a specific example of the switching member 70 according to claim 3, and by sliding the switching member 70 so that the tip end portion 90 a of the spring material 90 is positioned at the narrow width portion 71 a of the elongated hole 71, The interval between the materials 90 is narrowed, and the pressing and fixing member 92 is reduced in diameter. On the other hand, by sliding the switching member 70 so that the distal end portion 90a is positioned in the wide width portion 71b of the long hole 71, the interval between the spring members 90 is widened, and the pressing and fixing member 92 is in the expanded state. Also in this case, the insertion / removal operation of the cigar plug into / from the cigar socket 60 can be easily performed without any trouble by simply sliding the switching member 70.

  According to the invention described in claims 1 to 4, even if there is a slight error in dimensions between the cigar plug and the cigar socket in the combination of the retrofit and the regular parts or the combination of the retrofit parts, It was possible to provide a cigar plug and a cigar socket that can be easily inserted into and removed from the cigar socket and that the cigar plug does not fall out of the cigar socket during use.

[First embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. The first embodiment is an example in which the “cigar plug fixing structure” is provided on the cigar plug side. FIG. 1 is a front view showing a cigar plug 10 according to a first embodiment of the present invention, FIG. 2 is a plan view of the cigar plug 10, and FIG. 3 is a right side view of the cigar plug 10. 4 is a cross-sectional view taken along line AA in FIG.

  As shown in FIGS. 1 to 4, the cigar plug 10 is roughly constituted by a plug body 12, a first contact 14, a second contact 16, a spring material 56, a pressing and fixing member 58, and a switching member 20.

  The plug body 12 houses a first contact 14, a second contact 16, a spring material 56, a pressing and fixing member 58, and a switching member 20, which will be described later, and a casing 12 a, a front fixing member 12 b, and a rear fixing member. 12c.

  The casing 12a is a cylindrical member, and a male screw 32 is formed at one axial end (insertion tip) thereof. Two openings 34 are formed on the side wall of the casing 12a so as to face each other (that is, two openings 34 are formed on the side wall of the casing 12a constituting the plug body 12 at intervals of 180 degrees. ). Further, a protrusion 36 extending in the circumferential direction is formed on the outer surface of the rear end portion of the casing 12a. In the present embodiment, the casing 12a is divided into two parts, a lower casing 12a1 and an upper casing 12a2.

  Inside the casing 12a, from the insertion front end side (left side in FIG. 4) to the rear end side, a first contact accommodating portion 22, a second contact attaching portion 24, a cord hole 26, a spring material attaching portion 28, and a slide groove 30 are provided. Are formed (see FIG. 4).

  The front side fixing member 12b is a cylindrical member, and a locking claw 46 projects from the insertion tip side opening on the inner side surface thereof. A female screw 44 is engraved on the rear end portion side of the inner side surface of the front fixing member 12b, and the female screw 44 is screwed into the male screw 32 of the plug main body 12 to be vertically divided into two. The main body 12 is held on the front side thereof (see FIGS. 1 and 4).

  The rear side fixing member 12c is a ring-shaped member, and the plug main body 12 divided into two in the vertical direction is held on the rear side by fitting the rear side fixing member 12c to the rear end portion of the casing 12a. In addition, the thickness of the rear side fixing member 12c is set so that the outer surface thereof is substantially flush with the outer surface of the protrusion 36 of the casing 12a.

  The first contactor 14 includes a helical spring 48, a fuse 50, and a cap terminal 52, and the helical spring 48 and the rear end portion of the fuse 50 are accommodated in the first contactor accommodating portion 22. (See FIG. 4).

  The helical spring 48 has a large diameter at one end and is formed so that the diameter gradually decreases toward the other end. The large diameter end protrudes from the inner surface of the first contact accommodating portion 22. It is in contact with the locking piece 22a. When the cigar plug 10 is used, the conductive wire S is connected to the large-diameter end of the helical spring 48, as shown by the dotted line in FIG.

  The outer diameter on the small diameter side of the helical spring 48 is set to be smaller than the outer diameter of the fuse 50 described later, and the fuse 50 is disposed so as to be in contact with the small diameter side end portion.

  The fuse 50 protects an electric device connected to the cigar plug 10 when an excessive current flows, and a well-known structure is applied as it is. A cap terminal 52 is attached to the front end of the fuse 50.

  The cap terminal 52 is a cap-shaped member that is open on the rear end side and closed on the insertion tip end side, and the closed end portion projects outward from the tip of the front fixing member 12b. At the opening end of the cap terminal 52, a locking rod 52a is formed over the entire circumference, and this locking rod 52a is locked in a resilient manner to the locking claw 46 of the front fixing member 12b. ing.

  In addition, in the state which accommodated the 1st contactor 14 in the plug main body 12, the helical spring 48 is the state contracted rather than natural length. Accordingly, the fuse 50 and the cap terminal 52 are always pressed and urged toward the insertion distal end side by receiving the elastic force of the helical spring 48.

  The second contact 16 is formed by bending an elongated plate made of a conductive metal material such as copper, and its central portion is bent into a U shape (in this embodiment, this U shape is formed). The bent part 16a is attached to the second contact attachment part 24).

  The distal end side of the second contactor 16 with respect to the bent portion 16a bulges outward, and the bulged portion 16b projects outward from the left and right openings 34 of the casing 12a. The tip 16c of the second contact 16 is locked to the inner wall of the casing 12a.

  The spring material 56 is formed by folding an elongated metal plate material into two at the central portion thereof and bending it into a substantially square shape. The spring material 56 can be hooked on the spring material mounting portion 28 so that the spring material 56 is in the casing 12a. Is attached.

  The two blades 56b connected from the bent portion 56a of the spring material 56 extend outward from the center of the plug so that the distance between them is increased. The tips of the blades 56b are slightly bent inward so as to be parallel to each other, and a locking claw 56c is cut and raised on the outer surface of the bent portion of the tip, and is fixed to the locking claw 56c by pressing. A member 58 is attached.

  The pressing and fixing member 58 is a block-shaped member made of an elastic material such as rubber, and the outer surface of the pressing and fixing member 58 formed in an irregular shape protrudes outward from the opening 34 of the casing 12a.

  The distance from the outer surface of one pressing and fixing member 58 to the outer surface of the other pressing and fixing member 58 is the expanding width X of the pressing and fixing member 58 (see FIG. 2), and the expanding width X in the expanded diameter state is the cigar socket. The shapes of the spring material 56 and the pressure fixing member 58 are appropriately set so that the inner diameter R of the plug receiving cylinder is larger than the inner diameter R of the plug receiving cylinder of the cigar socket. ing.

  The switching member 20 is used to change the pressing and fixing member 58 from the expanded diameter state to the reduced diameter state (or vice versa). The switching member 20 projects from the disk-shaped push switch 20a and the end surface on the insertion distal end side of the push switch 20a. And a bifurcated guide member 20b (see FIG. 4).

  On the outer surface of the push switch 20a, a flange 20c is formed over the entire circumference, and this flange 20c is recessed with a width wider than the width of the flange 20c on the entire inner periphery of the rear end of the casing 12a. It fits into the groove 30. Thereby, the switching member 20 can move in the slide groove 30 in the front-rear direction.

  The bent portion 56a of the spring material 56 described above is fitted into the recess 20d formed between the bifurcated guide member 20b, and the tip of each guide member 20b (the opening edge of the recess 20d) is fitted. The spring material 56 is in contact with the outer surface of the blade 56b.

  A method of using the cigar plug 10 configured as described above will be described. When the cigar plug 10 is used, the rear end portion of the cigar plug 10 is grasped and the switching member 20 (push switch 20a) provided at the rear end portion is pushed with a finger. Then, in the push switch 20a, the two guide members 20b move forward along the outer surface of the spring material 56 while bending the spring material 56, and the spread width X of the press fixing member 58 is gradually narrowed.

  Then, when the switching member 20 (push switch 20a) is pushed all the way in, the spreading width X of the pressing and fixing member 58 is minimized, and the spreading width X at this time is smaller than the inner diameter R of the plug receiving cylinder of the cigar socket. . Therefore, when the cigar plug 10 is inserted into the cigar socket, the pressing and fixing member 58 does not interfere with the insertion work of the cigar plug 10, and the insertion work can be easily performed (FIGS. 5 to 5). 6).

  When the insertion operation of the cigar plug 10 into the cigar socket is completed, the finger is released from the switching member 20 (push switch 20a). Then, the spring material 56 is subjected to an elastic force to return to the original shape, and the diameter of the spring material 56 is expanded. When the diameter of the spring member 56 is increased, the spreading width X of the pressing and fixing member 58 also increases, and the pressing and fixing member 58 that is made of rubber and has unevenness on the surface faces the inner side surface of the socket plug receiving cylinder from the inside to the outside. Press. As a result, the holding force of the cigar plug 10 with respect to the cigar socket is greatly increased. Even if at least one of the cigar plugs 10 is a retrofitted part and there is a slight dimensional error between the two, the cigar plug 10 due to vibration during operation or the like. Can be reliably prevented from falling off the cigar socket. At this time, the tip of the first contact 14 abuts on the terminal plate 8 of the cigar socket, and the outer surfaces of the second contacts 4 and 4 abut on the inner wall of the plug receiving cylinder 7 so that power can be supplied. .

  As described above, in this embodiment, a small dimensional error between the two is filled by the cooperative operation of the spring member 56 and the pressing fixing member 58, and a reliable "cigar plug fixing structure" is configured. .

  On the other hand, when the cigar plug 10 is removed from the cigar socket, the push switch 20a of the switching member 20 is pushed to reduce the spreading width X of the spring material 56 and reduce the diameter of the cigar plug 10 in the same manner as when the cigar plug 10 is inserted into the cigar socket. In this way, the cigar plug 10 can be easily removed from the cigar socket.

  In the above-described embodiment, the example in which the two pressing fixing members 58 are provided on the side wall of the plug body 12 is shown, but three or more pressing fixing members 58 may be provided. In this case, the number of openings 34 provided on the side wall of the plug main body 12, the blades 56 b of the spring material 56, and the guide members 20 b of the switching member 20 are appropriately set according to the number of pressing fixing members 58. The diameter (maximum outer diameter) of a circle passing through the outer surface of all the pressing and fixing members 58 is the spreading width X of the pressing and fixing member 58.

  In order to obtain a uniform holding force by the pressing and fixing member 58, the pressing and fixing member 58 is arranged on the side wall of the plug body 12 at equal angular intervals (in the case of arranging three pressing and fixing members 58, 120 ° intervals). desirable.

[Example 2]
Next, a second embodiment of the present invention will be described with reference to FIGS. The second embodiment is an example in which a “cigar plug fixing structure” is provided on the cigar socket side. 7 is a perspective view showing a cigar socket 60 according to the second embodiment of the present invention, FIG. 8 is a cross-sectional view taken along line BB in FIG. 7, and FIG. 9 is a configuration of a casing 62 described later. FIG. 10 is a partially enlarged perspective view (partially omitted) showing a relationship between a spring material 90 and a switching member 70 described later.

  As can be seen from these drawings, the cigar socket 60 is roughly constituted by a casing 62, a plug receiving cylinder 64, a terminal plate 66, a spring material 90, a pressing and fixing member 92, and a switching member 70.

  The casing 62 has a box shape that houses a plug receiving cylinder 64, a terminal plate 66, a spring member 90, a pressing and fixing member 92, and a switching member 70, which will be described later, and includes a lower casing 62a and an upper casing 62b. ing.

  The lower casing 62a is a box-shaped member whose upper surface and front surface are opened. Inside the lower casing 62a are a terminal plate locking groove 72, a socket locking groove 74, a socket holding portion 76, a spring material mounting portion 78, and A cord hole (not shown) is formed (see FIG. 8).

  The upper casing 62b is a member having a substantially inverted M-shaped cross section that covers the upper surface and the front surface of the lower casing 62a. The ceiling surface of the upper casing 62b has a terminal plate locking groove (not shown), a socket locking groove 94, and a socket holder. A portion (not shown) and a spring material insertion hole 86c are formed.

  Two circular plug insertion / removal holes 82 are formed on the front surface of the upper casing 62b side by side, and a switching member mounting portion 84 is integrally formed on the upper surface of the upper casing 62b. It is formed in a bulging shape.

  The switching member mounting portion 84 is composed of a mounting portion main body 86 and a closing plate 88. The mounting portion main body 86 is a rectangular block-shaped member, and a stepped outer flange portion 86a is provided so as to fit the closing plate 88 along the outer edge of the upper surface thereof. Two slide grooves 86b for sliding in the front-rear direction of the switching member 70 extending in the front-rear direction and notched at the front end are formed side by side on both the left and right sides of the upper surface inside (see FIG. 9). The spring material insertion hole 86c described above is opened at the groove bottom of each slide groove 86b. A cutout portion provided in the vicinity of the slide groove 86b in the stepped outer flange portion 86a is a cutout portion 86d.

  The closing plate 88 is a plate-shaped member that fits into the stepped outer flange portion 86a and covers the upper surface of the mounting portion main body 86. A rectangular knob-shaped rectangular hole 88a corresponds to the slide groove 86b at the rear end portion. A stopper 88b that fits into the notch 86d is formed at the front end of the stopper 88b. A locking projection 88b1 protrudes downward from the front end of the stopper 88b.

  The plug receiving cylinder 64 is a cylindrical member made of a conductive metal, the plug insertion side is slightly enlarged in diameter, and an outer collar 64b is formed at the open end. Two locking claws 64a are bent upward and downward at both upper and lower end portions on the opposite side of the plug receiving cylindrical body 64, and both the locking claws 64a are engaged with the socket of the lower casing 62a. The groove 74 and the upper casing 62b are respectively locked in the socket locking grooves 94.

  The terminal plate 66 is a plate-like member made of conductive metal, and the lower end edge thereof is locked in the terminal plate locking groove 72. When the cigar socket 60 is used, a power supply cord (not shown) derived from the battery is connected to the terminal plate 66 and the plug receiving cylinder 64.

  The spring material 90 is formed by bending an elongated metal band material into a substantially U shape, and the bottom surface thereof is screwed to the spring material mounting portion 78 of the lower casing 62a. The distal end portion of the spring member 90 is bent inward, and the distal end portion 90a is fitted in a long hole 71 of the switching member 70 described later. The distal end portion 90a is formed in an outward arc shape so as to slide smoothly in the long hole 71. Press fixing members 92 made of an elastic material such as rubber are attached to the inner side surfaces of the blades 90b on the left and right sides of the spring material 90 with an adhesive tape. The distance from the outer surface of one pressing and fixing member 92 to the outer surface of the other pressing and fixing member 92 is the spreading width Y of the pressing and fixing member 92 (see FIGS. 8 and 10).

  The switching member 70 is a resin plate-like member, and is attached to the slide groove 86b of the attachment portion main body 86 so as to be slidable in the front-rear direction (the axial direction of the plug receiving cylinder 64). A long hole 71 extending in the front-rear direction is formed in the center of the switching member 70, and the distal end portion 90 a of the spring material 90 described above is fitted into the long hole 71. Here, the front side (plug insertion side) of the long hole 71 is formed with a small width, this portion is a narrow portion 71a, and the inner surface thereof is tapered so that it gradually becomes wider toward the opposite side. It is formed and connected to the wide part. The wide portion is a wide portion 71b, and the tapered portion is a tapered portion 71c. In the state in which the distal end portion 90a of the spring material 90 is fitted in the wide width portion 71b, the space between the spring materials 90 is widened, and the spread width Y of the pressing fixing member 92 is maximized, and in the state of being fitted in the narrow width portion 71a, The spread width Y of the pressing and fixing member 92 is minimized when the interval between the spring members 90 is narrowed and narrower than the outer diameter M of the plug body.

  When the spreading width Y of the pressing and fixing member 92 is the maximum, the spreading width Y is larger than the inner diameter R (at least the outer diameter M of the plug body) of the plug receiving cylinder 64, and the spreading width of the pressing and fixing member 92 is increased. When Y is the smallest, the spread width Y is determined so that the inner diameter R of the plug receiving cylinder 64 (more specifically, the plug body of the plug main body can be clamped from both sides of the cigar plug inserted into the plug receiving cylinder 64). The shape of the spring member 90 is appropriately set so as to be smaller than the outer diameter M), and can be elastically contacted with the outer surface of the plug body.

  On the upper surface of the switching member 70 and on the end edge of the insertion side, a fitting recess 70a into which the locking projection 88b1 of the stopper 88b of the closing plate 88 is fitted is formed. Further, a knob 70 b is projected from the rear end portion of the upper surface of the switching member 70.

  The socket holding portion 76 has a contact surface with the plug receiving cylinder 64 formed in an arc shape so that the plug receiving cylinder 64 can be held from above and below.

  When using the cigar socket 60 configured as described above, the knob 70 b of the switching member 70 is picked and pulled out from the switching member mounting portion 84. At this time, the locking projection 88b1 of the stopper 88b is lightly engaged with the fitting recess 70a of the switching member 70, but the engagement is released by overcoming the engaging portion by the deflection of the stopper 88b or the locking projection 88b1. Accordingly, the distal end portion 90a of the spring material 90 can be moved to the wide width portion 71b of the long hole 71 by releasing the engagement. By such movement, the interval between the spring members 90 is widened by the elastic force, and the spread width Y of the pressing and fixing member 92 is maximized.

  As described above, when the pressing and fixing member 92 is in the expanded diameter state, the expansion width Y is set to be larger than the outer diameter M of the plug body, so that when the cigar plug is inserted into the cigar socket 60, Therefore, it can be smoothly inserted without being caught by the pressing and fixing member 92.

  When the operation of inserting the cigar plug into the cigar socket 60 is completed, the switching member 70 is pushed into the slide groove 86b to move the distal end portion 90a of the spring material 90 to the narrow width portion 71a of the long hole 71. Then, the interval between the spring members 90 is narrowed, and the spread width Y of the pressing and fixing member 92 is minimized. As described above, when the pressing and fixing member 92 is in the reduced diameter state, the spreading width Y of the pressing and fixing member 92 holds the cigar plug inserted into the plug receiving cylinder 64 from both sides. Thereby, the holding force of the cigar plug with respect to the cigar socket 60 is greatly enhanced, and the cigar plug can be reliably prevented from falling off the cigar socket 60 due to vibration during operation.

  When the switching member 70 is pushed all the way into the slide groove 86b, the locking projection 88b1 of the stopper 88b is fitted into the fitting recess 70a to be locked, and the pressure fixing member 92 is held in a reduced diameter state.

  On the other hand, when the cigar plug is removed from the cigar socket 60, the switching member 70 may be pulled out from the switching member mounting portion 84 in the same manner as when the cigar plug is inserted into the cigar socket 60. Thus, the operation of pulling out the cigar plug from the cigar socket 60 can be easily performed.

  In the above-described embodiment, the spring member 90 and the pressing fixing member 92 are provided on the plug insertion side of the plug receiving cylinder 64, but are provided on the opposite side of the plug receiving cylinder 64 from the plug insertion side. May be. In addition, an opening (not shown) may be formed on both side surfaces of the plug receiving cylinder 64, and the spring member 90 and the pressure fixing member 92 may be disposed so that the cigar plug can be sandwiched through the opening.

  And in any case, the same effect as the above-mentioned embodiment can be obtained.

  In addition, the direction of the long hole 71 provided in the switching member 70 may be formed in a tapered shape in which the front side has a large diameter and the interval decreases toward the rear side. However, in this case, the pressing and fixing member 92 is in a reduced diameter state when the switching member 70 is pulled forward, and the pressing and fixing member 92 is in an expanded state when the switching member 70 is pushed in.

It is a front view which shows the cigar plug of one Example of this invention. It is a top view of the cigar plug concerning the Example of FIG. It is a right view of the cigar plug concerning the Example of FIG. It is AA sectional drawing in the Example of FIG. It is the front view seen from the right angle direction of FIG. It is a figure which shows the use condition of a cigar plug. It is a perspective view which shows the cigar socket which is another Example of this invention. It is BB sectional drawing in the Example of FIG. It is a partial expansion perspective view (partially abbreviate | omitted) which shows the structure of a casing. FIG. 6 is a partially enlarged perspective view (partially omitted) showing a relationship between a spring material and a switching member. It is a figure which shows the conventional cigar plug and cigar socket.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Cigar plug 12 ... Casing 14 ... 1st contact 16 ... 2nd contact 20 ... Switching member 56 ... Spring material 58 ... Press fixing member 60 ... Cigar socket 62 ... Casing 64 ... Plug receiving cylinder 66 ... Terminal board 70 ... Switching member 90 ... Spring material 92 ... Pressing and fixing member M ... Outer diameter R of plug body ... Inner diameter X, Y of plug receiving cylinder body

Claims (4)

A cigar plug fixing structure for fixing a cigar plug inserted in a cigar socket of an automobile,
A pressing and fixing member provided in each of a plurality of openings formed at equiangular intervals on the side wall of the plug body of the cigar plug so as to be movable in the radial direction;
A spring material that elastically urges the pressing and fixing member in the expanding direction so that a spreading width of the pressing and fixing member is larger than an inner diameter of a plug receiving cylinder provided in the cigar socket;
The plug body is provided at the rear end of the plug body so as to be movable in the axial direction thereof, and when the plug body is moved toward the distal end side, the spreading width of the pressing fixing member is smaller than the inner diameter of the plug receiving cylinder. A cigar plug fixing structure comprising: a switching member that bends the spring material and moves to the opposite side by the elastic force of the spring material when an external force is unloaded, and expands the diameter of the spring material. . The spring material has a plurality of blades extending outward from the center of the plug so as to increase the distance from the plug rear end side toward the plug front end side,
A recess is formed in the plug tip end of the switching member,
The cigar plug fixing according to claim 1, wherein a plug rear end side end of the blade is inserted into the recess so that an outer surface of the blade comes into contact with an opening edge of the recess. Construction. A cigar plug fixing structure for fixing a cigar plug inserted in a cigar socket of an automobile,
A pair of cigar sockets provided at positions facing each other so as to sandwich a cigar plug inserted into the plug receiving cylinder on either side of the plug receiving cylinder, on the plug insertion opening side or on the opposite side. A pressing and fixing member;
A spring material having flexibility and supporting the pair of pressing and fixing members so as to be close to and away from each other;
It is provided in the vicinity of the plug receiving cylinder so as to be slidable in the axial direction thereof, and when it is slid to one side in the axial direction, the spreading width of the pressing fixing member is made smaller than the outer diameter of the plug body of the cigar plug. A switching member that expands the diameter of the spring material so that the expansion width of the pressing and fixing member is larger than the outer diameter of the plug body when the spring material is bent and slid to the opposite side. Features a cigar plug fixing structure. The spring material is an elongated and flexible plate material that is bent in a substantially U-shaped cross section,
The switching member has a narrow portion formed on one end side, a wide portion formed on the opposite side, and a length formed in a tapered shape so that an inner surface from the narrow portion toward the wide portion gradually becomes wider. A plate-like member having a hole,
4. The cigar plug fixing structure according to claim 3, wherein a tip of the spring material is fitted into the elongated hole.

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