JPH0799701B2 - Module-Jack - Google Patents

Description

TECHNICAL FIELD The present invention has a plug insertion opening on the front surface of a casing,
The present invention relates to a modular jack in which a plug connected to a telephone line is detachably connected through a plug insertion port.

[Background Art] Conventionally, this type of modular jack can be opened and closed freely to prevent dust from entering the plug insertion slot and foreign objects such as a screwdriver from entering when the plug is not attached. It is provided with a dustproof cover. As shown in FIG. 22, as the dustproof cover, it is considered that the dust cover is composed of a pair of door bodies 62, 63 slidably arranged in the casing 1 up and down, but the door bodies 62, 63 are opened. Since there is no means for holding the door in the open state, it is necessary to lift the door bodies 62 and 63 when inserting the plug, which makes it difficult to perform the inserting operation. Further, since there is no means for locking the door bodies 62, 63 in the closed state, the door bodies 62, 63 are easily rattled due to vibration during transportation, etc., and the door bodies 62, 63 are damaged, Alternatively, there is a problem that the door bodies 62 and 63 are opened and dust enters.

[Object of the Invention] The present invention has been made in view of the above points, and an object thereof is to lock the dustproof cover in at least one of an open state and a closed state. Thus, it is an object of the present invention to provide a modular jack in which the plug insertion operation is facilitated or the dustproof cover is prevented from being opened carelessly due to vibration or the like.

DISCLOSURE OF THE INVENTION (Example 1) The casing 1 is made of an insulating material such as synthetic resin, and as shown in FIG. 22, a body 11 provided with a modular insert 31 and a front portion of the body 11 (first The cover 51 is fitted to the right side in FIG. 1). The external dimensions of the casing 1 are set to the dimensions corresponding to one module of the wiring equipment module that is standardized so that it can be attached to a ready-made mounting frame. You can wear it. Body 11 is the 20th
As shown in FIG. 21 and FIG. 21, a terminal portion 12 is provided on the rear surface,
In addition, a modular storage portion 14 is formed which is open at the center of the front surface. The modular insert 31 is housed in the modular housing portion 14, and the contact pin 32 of the modular insert 31 faces the opening of the modular housing portion 14. Fitting holes 15 are formed on both left and right edges of the body 11 and extend through the front and back.
Are formed.

The modular insert 31 is formed in a shape in which a large number of elastic linear contact pins 32 are projected from a base 33 made of an insulating material such as synthetic resin, and a plug is provided on the front surface of the casing 1. When inserted through the plug insertion opening 54 that opens in each of the contact pins 32, each contact pin 32 is elastically contacted with the corresponding contact of the plug to be electrically connected to each other. A locking protrusion 34 is provided on the upper surface of the modular insert 31, and when the modular insert 31 is housed in the body 11, the locking protrusion 34 is a modular housing portion.
Modular insert 31 is locked to the inner surface of 14
It is fixed at 11 fixed positions.

The terminal portion 12 formed on the rear surface of the body 11 includes a terminal plate 21 that is connected to each contact pin 32 of the modular insert 31 housed in the modular housing portion 14, and is integrally provided on the body 11. 6 separated by a partition 22
Terminal plate 21 having terminal screws 23 screwed into two of the compartments
Is provided. Therefore, up to six terminal boards 21 can be arranged according to the specifications.

On the other hand, the cover 51 is formed in a box shape opened rearward, and the connecting leg pieces 52 are integrally extended from the left and right edges of the rear end of the cover 51, respectively. Fitting protrusions 53 protruding outward in the left-right direction are formed at the distal ends of the coupling leg pieces 52, respectively. Therefore, by inserting the engaging leg piece 52 of the cover 51 into the fitting hole 15 of the body 11, the fitting protrusion 53 is locked in the fitting hole 15 and the body 11 and the cover 51 are integrally coupled. In the center of the front surface of the cover 51, the plug insertion opening 54 described above is provided corresponding to the opening of the modular storage portion 14 of the body 11.
Are formed. A pair of coupling claws 55 are projected from both left and right edges of the cover 51, and by engaging the coupling claws 55 with a standardized synthetic resin mounting frame for mounting a ready-made wiring device, The casing 1 can be held by the mounting frame. Further, coupling holes 56 are formed on the left and right side surfaces of the cover 51, and the casing 1 can be held in the mounting frame by inserting the coupling claws of the standardized metal mounting frame into the coupling holes 56. I have to. cover
At 51, on the left and right of the rear surface of the periphery of the plug insertion port 54, the first
As shown in FIG. 4 to FIG. 4, holding ribs 57 are respectively provided so as to project, and when the cover 51 is connected to the body 11, the front surface of the modular housing portion 14 of the body 11 and the plug insertion port 54 of the cover 51 are shown. A space having a thickness approximately equal to the protruding amount of the holding rib 57 is formed between the rear surface of the opening peripheral edge and the rear surface. A slit-shaped locking recess 59 is formed in the upper portion of each holding rib 57. A locking rib 58 is projectingly provided between the both holding ribs 57 and on the rear surface of the lower peripheral edge of the plug insertion port 54 as shown in FIG.

By the way, a dustproof cover 61 is attached to the plug insertion port 54 in order to prevent dust and the like from entering the casing 1 through the plug insertion port 54 when the plug 41 is not inserted. The dust-proof cover 61 is a pair of upper and lower door bodies as shown in FIG.
It is composed of 62 and 63, and is mounted in a space formed between the front surface of the modular housing portion 14 of the body 11 and the rear surface of the opening peripheral edge of the plug insertion opening 54 of the cover 51. Upper door 62
As shown in FIG. 7 and FIG. 8, the rear surface has a pair of guide grooves 64 running in the vertical direction. The guide groove 64 has the rear surface and the upper end opened and the lower end closed. At both left and right ends of the upper door 62, locking projections are provided on the upper end of the rear surface.
65 are formed. On the other hand, as shown in FIGS. 5 and 6, the lower door 63 has a guide groove for the upper door 62 at the upper end of the front surface.
A pair of left and right engaging projections 66 is provided at a position corresponding to 64, and an operation piece 67 is provided so as to project at the lower end of the front surface at the center in the left-right direction. The left-right width of the operation piece 67 is set to be substantially equal to the left-right width of the lower end portion of the plug insertion port 54. Locking protrusions 68 project from the left and right side edges of the lower door body 63, and slits 69 running vertically are formed in the lower door body 63 in correspondence with the locking protrusions 68. Since the lower door body 63 is formed of a flexible material such as synthetic resin, the provision of the slit 69 allows the locking projection to be formed.
68 moves forward and backward. Upper and lower doors 62,6
3 are formed to have substantially the same width, the width is set to be substantially equal to the distance between the holding ribs 57 formed on the inner peripheral surface of the cover 51, and the thickness of both door bodies 62 and 63 is the same as that of the holding rib 57. It is set to approximately half the amount of protrusion. Therefore, with the upper door body 62 on the front side and the engagement protrusion 66 of the lower door body 63 inserted in the guide groove 64 of the upper door body 62, the both door bodies 62, 63 are overlapped in the front-rear direction.
If 2, 63 are accommodated in the space between the body 11 and the cover 51 in such a manner as to be accommodated between the retaining ribs 57 of the cover 51, the plug insertion port 54 will be closed by both door bodies 62, 63.

With the above configuration, when the dust-proof cover 61 closes the plug insertion opening 54 as shown in FIG. 19, the lower end of the upper door 64 rests on the upper edge of the locking rib 58 as shown in FIG. The lower door body 63 is prevented from falling down and the lower door body 63 has the engaging projection 66 inserted into the guide groove 64 of the upper door body 62, so that the engaging projection 66 engages with the lower end of the guide groove 64. The lower door body 63 stops at the position where it is stopped or at the position where the operation piece 67 of the lower door body 63 comes into contact with the lower end edge of the plug insertion port 54. Here, operation piece 67
Is set to a protrusion amount such that it slightly protrudes from the front surface of the casing 1.

When inserting the plug into the plug insertion hole 54,
The lower door body 62 is moved upward by bringing the plug into contact with or by operating the operation piece 67 by hand. Here, operation piece 67
When the abutting contact with the lower edge of the upper door body 62, the upper door body 62 also moves upward together with the lower door body 63, and the plug insertion port 54 is opened. In this way, with the plug insertion opening 54 open,
The position is set so that the locking projection 68 provided on the lower door body 63 engages with the locking recess 59 formed in the holding rib 57,
As a result, both door bodies 62 and 63 are maintained in a state where the plug insertion port 54 is opened. That is, when the dust cover 61 is opened by hand and the plug is inserted, the dust cover 61 is held open with one hand, and the plug is inserted into the plug insertion opening 54 with the other hand. Both operations can be performed sequentially with one hand.

(Embodiment 2) In this embodiment, as shown in FIG. 9 and FIG. 10, instead of the locking recess 59 and the locking projection 68, a pressing spring 41 is provided on the rear surface of the upper peripheral portion of the plug insertion port 54. By providing the, the dustproof cover 61 can be held in an open state. That is, the pressing spring 41 is formed so as to project rearward as it goes upward, and is arranged at a position where it can elastically contact the front surface of the upper door body 62. The pressing spring 41 may be formed integrally with the cover 61 or may be a separate body. With this configuration, when the dustproof cover 61 is opened, the door bodies 62 and 63 are sandwiched between the front surface of the body 11 and the pressing spring 41 by the spring force of the pressing spring 41. In this way, the dustproof cover 61 is held in the open state.

(Embodiment 3) In this embodiment, as shown in FIG. 11 and FIG. 12, both holding ribs 57 are provided with holding springs 42, respectively. Is formed so as to shrink. Therefore, when the dustproof cover 61 is opened, both holding springs 42 are elastically attached to the left and right edges of both door bodies 62 and 63, and the both door bodies 62 and 63 are sandwiched between the holding springs 42. . In this way, the dustproof cover 61 can be held open.

(Embodiment 4) In this embodiment, as shown in FIG. 14, a pair of left and right engaging recesses 43 are formed on the rear surface of the peripheral edge of the plug insertion port 54, and as shown in FIG. A pair of left and right engaging protrusions 44 that engage with the engaging recesses 43 in a state where the dustproof cover 61 is opened are formed at the upper end of the. A slit 45 is formed in a portion corresponding to the engaging protrusion 44, so that the engaging protrusion 44 can easily move back and forth in the front-rear direction.

(Embodiment 5) In this embodiment, as shown in FIGS. 15 and 16, a pair of left and right pressing projections 46 are provided on the rear surface of the lower portion of the peripheral edge of the plug insertion port 54. The lower part of the rear surface of the pressing protrusion 46 is the body 11
The lower end of the lower door 63 is sandwiched between the pressing protrusion 46 and the body 11 when the dust cover 61 is closed. That is, contrary to the above-described embodiments, the dustproof cover 61 is held in a closed state.

As described above, since the dustproof cover 61 can be held in the closed state, the dustproof cover 61 may be damaged by vibration or the like during transportation, or foreign matter may enter with the dustproof cover 61 left open. Can be prevented.

(Sixth Embodiment) In the present embodiment, as opposed to the fifth embodiment in which the cover 51 is provided with the pressing protrusion 46, as shown in FIGS.
A holding protrusion 47 is provided on the lower part of the rear surface of the vehicle. Here, since the left and right edges of the lower end of the opening of the modular accommodating portion 14 formed in the body 11 are formed stepwise, and are formed so as to have the narrowest width at the lower end, the holding protrusion 47 is formed. Are formed at intervals so as to contact the body 11 only at the lower end of the peripheral edge of the modular storage portion 14. Therefore,
When the dustproof cover 61 is closed, the holding projection 47 is pressed against the front surface of the body 11 to keep the dustproof cover 61 closed, but if the lower door body 63 is moved a little upward, the holding projection 47 Is inserted into the opening of the modular storage unit 14,
The dust-proof cover 61 can move freely upward.

[Effects of the Invention] As described above, the present invention provides a modular jack in which a plug insertion opening is opened in the front surface of a casing and a plug connected to a telephone line is detachably coupled through the plug insertion opening. Is provided with a dustproof cover that is slidable in one direction along the opening surface of the plug insertion opening and opens and closes the plug insertion opening, and is dustproof when the plug insertion opening is at least one of an open state and a closed state. The cover is provided with engaging means for locking the casing, and the dust cover can be locked in at least one of an open state and a closed state, so that the dust cover is held in the open state. If possible, insert the plug easily with one hand.If the dust cover can be held closed, do not open it accidentally due to vibration. Therefore, it has the advantage of preventing damage to the dustproof cover and preventing foreign matter from entering the casing.
Moreover, since the dustproof cover is composed of the first door body and the second door body having the operation piece and slidingly sliding the first door body, the dustproof case of the case where the plug insertion opening is opened The storage space is small, there is no need to increase the size of the casing, and in addition, the engagement means locks the second door body in the dustproof cover, and does not lock both door bodies. Since it does not exist, it has an advantage that the engaging means can be configured with a simple structure.

[Brief description of drawings]

First Embodiment FIG. 1 is a perspective view of an essential part showing a first embodiment of the present invention, and FIGS. 2 to 4 are rear views of covers used for the same, respectively.
FIG. 5 is a front view of a lower door body used in the same as FIG. 5 and FIG. 6 is a front view of a lower door body used in the same as above, and FIG. Is a front view and a vertical cross-sectional view, FIG. 9 and FIG. 10 are rear views of the cover in the second embodiment of the present invention, and vertical cross-sectional views, FIG. 11 and FIG. Rear view and vertical sectional view, FIG. 13 is a perspective view of a lower door used in Embodiment 4 of the present invention, FIG. 14 is a rear view of a cover used in the same, and FIGS. 15 and 16 are books. A rear view and a vertical sectional view of a cover used in a fifth embodiment of the invention, FIGS. 17 and 18 are a vertical sectional view of a lower door body used in a sixth embodiment of the present invention, and a front view and FIG. 22 to 22 are a front view, a rear view, a vertical sectional view, and an exploded perspective view showing the modular jack according to the present invention. 1 is a casing, 41 is a pressing spring, 42 is a holding spring, 43 is an engaging recess, 44 is an engaging projection, 46 is a pressing projection, 47 is a holding projection,
54 is a plug insertion port, 59 is a locking recess, 61 is a dustproof cover, 68
Is a locking protrusion.

Claims (3)

[Claims] 1. A modular jack in which a plug insertion opening is opened in a front surface of a casing and a plug connected to a telephone line is detachably coupled through the plug insertion opening, in which the plug insertion opening is provided on an opening surface of the plug insertion opening. A dustproof cover that is slidable in one direction along which the plug insertion opening is opened and closed is provided. The dustproof cover includes a first door body that closes almost half of the plug insertion opening and a remaining half of the plug insertion opening. The first door body is interlocked with the slide of the second door body that is composed of the second door body that closes the plug and the operation piece is provided, and the plug insertion port is opened and closed. A modular jack, characterized in that in at least one of the above states, an engaging means for locking the second door of the dustproof cover to the casing is provided. 2. The engagement means is formed by a protrusion provided on either one of the casing and the dust-proof cover and a recess provided on the other.
A modular jack as described in paragraph. 3. The dustproof cover is disposed in a space having a wall surface in front of and behind the peripheral portion of the dustproof cover in the casing, and the engaging means is a pressing protrusion provided on either the casing or the dustproof cover. The modular jack according to claim 1, wherein the dustproof cover is in pressure contact with one of the front and rear wall surfaces of the space with the dustproof cover closed with the plug insertion opening. .