JP4079153B2 - Modular jack protective cap removal tool - Google Patents

Description

  The present invention relates to a tool for removing a protective cap of a modular jack.

  For example, in order to connect twisted pair cables for information communication such as LAN cables, for example, a modular jack as shown in Patent Document 1 is used. Such a modular jack includes a housing formed of an insulating resin, a terminal block attached to the housing, and a protective cap formed of an insulating resin and fitted in the vicinity of a connection portion of the terminal block.

Such a modular jack is shipped from the manufacturer with the protective cap engaged with the terminal block. Therefore, when carrying out the wiring work at a construction site or the like, the protective cap must first be removed from the terminal block. In addition, after connecting each wire of the twisted pair cable once to the modular jack, a connection mistake may be found and the connection work may have to be performed again. However, in the conventional modular jack, the operation part of the protective cap hardly protrudes from the surface of the main body part and the side surface of the side wall, and the operation part is very small, so that the operability is poor. It was. Therefore, when removing the protective cap from the terminal block, there is a problem that the engagement between the engaging claw of the terminal block and the engaging hole of the protective cap cannot be released unless a relatively large force is applied to the operation portion. It was.
JP 2004-319207 A

  The present invention has been made to solve the above-described problems of the conventional example, and an object of the present invention is to provide a tool that can easily remove a protective cap from a terminal block in the modular jack. And

The invention of claim 1 in order to achieve the above object, detachable a housing formed of an insulating resin, a terminal block mounted on the housing, while being fitted in the vicinity connection portion of the base is formed terminals with an insulating resin A protective cap removal tool for a modular jack having a protective cap with a projection for preventing slipping of operation , wherein the protective cap is attached to the protective cap in a state in which the protective cap is fitted to a terminal block. the so as to disengage the terminal block engagement portion, the protective cap side wall in contact, and includes a contact portion for elastically deforming the engagement portion near the side wall and,
The ceiling surface facing the top surface of the protective cap is a grip gripped by an operator, and a pair of side walls formed on the ceiling surface so as to protrude from the ceiling surface and to face the side walls of the protective cap. The abutting portion is an inclined surface formed on an opposing surface of the pair of side walls and abutting against an engaging portion formed on the side wall of the protective cap. A pair of first inclined surfaces formed to face each other and a pair of second inclined surfaces formed so as to reach the ceiling surface by connecting the first inclined surface to the ceiling surface. The protrusion of the protective cap is gripped at the step of the connecting portion of the surface with the first inclined surface, so that the protective cap is fixed from both sides and the front end side is opened to engage with the housing. Is to cancel,
A front wall that protrudes from the ceiling surface and abuts against a front end surface of the protective cap; after removing the protective cap from the modular jack terminal block, the protective cap is placed on the front surface of the ceiling; It can be removed only by sliding it to the opposite side of the wall .

Modular jack of the protective cap removal tool, the protective cap is attached to the protective cap while being fitted to the terminal block, as its contact portion to release the engagement of the protective cap and the terminal block engagement portion Since it abuts against the side wall on the protective cap side and elastically deforms the vicinity of the engaging portion of the side wall, the engagement between the engaging portion of the protective cap and the terminal block can be released with a relatively small force. The protective cap removal tool includes a ceiling surface facing the top surface of the protective cap, and a pair of side walls formed so as to protrude from the ceiling surface and face the side walls of the protective cap. Since it is an inclined surface that is formed on the opposing surfaces of the pair of side walls and abuts with the engaging portion formed on the side wall of the protective cap, the engaging portion formed on the side wall of the protective cap by being attached to the protective cap Can elastically deform the vicinity of the engaging portion of the side wall, and the engagement between the protective cap and the engaging portion of the terminal block can be easily released. The modular jack protective cap removal tool further includes a front wall that protrudes from the ceiling surface and abuts against the front end surface of the protective cap. After removing the protective cap from the modular jack terminal block, the protective cap is removed from the ceiling. Since the surface can be removed only by sliding the surface to the opposite side of the front wall, with the protective cap removal tool attached to the protective cap, place the protective cap perpendicular to the ceiling surface of the protective cap removal tool. The attached state of the protective cap and the protective cap removing tool cannot be released even if the device is pulled. As a result, when the protective cap is removed, it is possible to prevent the protective cap and the protective cap removing tool from being released and failing to remove the protective cap.

  First, a configuration of a modular jack used for connecting twisted pair cables for information communication such as a LAN cable will be described with reference to FIGS.

  The modular jack 10 includes a housing 1 formed of an insulating resin, a terminal block 2 mounted inside the housing 1, and a protective cap 3 formed of an insulating resin and fitted near the connection portion of the terminal block 2. ing. On the front side of the housing 1, a plug insertion port 11a into which a modular plug (not shown) connected to the twisted pair cable is inserted is formed. The terminal block 2 is mounted inside the housing 1 and inside the plug insertion slot 11a. A plurality of (for example, eight) linear contacts 13 are arranged on the terminal block 2 so as to be in contact with the modular plug contacts, and are electrically connected to the respective contacts 13 to provide insulation coating. A plurality of (for example, eight) terminal boards (IDC terminals) to which the electric wires 5 are connected are erected.

  The housing 1 includes a connection base 11 having a substantially rectangular parallelepiped shape at the tip, and the plug insertion port 11 a is opened on the front surface of the connection base 11. A base 12 on which the terminal block 2 is mounted protrudes continuously and integrally from the lower rear surface of the connection base 11.

  The terminal block 2 is disposed on the upper surface side of the base 12, and each terminal plate is projected along the front-rear direction, four on each of the left and right sides of the terminal block 2 so as to protrude from the upper surface of the terminal block 2. Has been placed. As is well known, each terminal plate 24 is formed in a bifurcated fork shape so as to have a pressure contact slit opened at the upper edge, and is arranged so that the thickness direction coincides with the left-right direction of the terminal block 2. Yes. The width of the pressure contact slit is set such that both side edges of the pressure contact slit are in pressure contact with the core wire of the electric wire 5 to be connected. Then, when the electric wire 5 having an insulating coating is press-fitted into the press-contact slit from above, the insulating cover of the electric wire 5 is broken at both side edges of the press-contact slit, and the core wire is press-contacted to the terminal plate in the press-contact slit.

  A plurality of protective walls 23 are formed on both sides of the upper surface of the terminal block 2 so as to protrude further than the tip of the terminal plate. A holding groove 23b is formed along the vertical direction at substantially the center of the opposing surface of each pair of protective walls 23 adjacent in the front-rear direction, and the terminal plate is held by the holding groove 23b. As a result, the terminal plate is protected by two protective walls 23 adjacent to each other in the front-rear direction, and the pressure contact slit is disposed between the two protective walls 23. The gap between each pair of protective walls 23 adjacent in the front-rear direction is set wider than the width dimension of the pressure contact slit so that the electric wire 5 can be inserted. Furthermore, an inclined surface is formed at the upper end of each pair of protective walls 23 so that the gap becomes wider toward the top. Therefore, each electric wire 5 of the twisted pair cable 4 can be easily introduced into the gap between each pair of protective walls 23. Then, the electric wires 5 can be electrically connected to the terminal plate by press-fitting each electric wire 5 into the press-contact slit of the terminal plate from above. Further, a positioning recess 22 for positioning the sheath 4 a of the twisted pair cable 4 is formed at the center of the upper surface of the terminal block 2. In addition, a holding projection 26 that holds the twisted pair cable 4 is formed at the rear end of the terminal block 2.

  On the outer side surface of each central protective wall 23 on the terminal block 2, an engaging claw 27 that is engaged with the protective cap 3 is projected. In addition, on the upper portion of the engaging claw 27, a guide surface 27a is formed so as to be inclined such that the amount of protrusion from the outer surface decreases as the upper end edge is approached. On the other hand, the protective cap 3 is formed to a size that covers the upper surface of the terminal block 2, and side walls 32 that are fitted along the outer surface of each protective wall 23 are formed on both sides of the cap body 31. ing. A rectangular engaging hole 32 a that engages with the engaging claw 27 is formed in the center portion of the side wall 32 in the front-rear direction. Further, on both sides in the front-rear direction of the engagement hole 32a of each side wall 32, a cut groove 32b having a lower edge is formed, and at a position farther from the engagement hole 32a than the cut groove 32b. A cut groove 32c having an open upper edge is formed. With such a configuration, a portion of the side wall 32 between the cut grooves 32b and 32c formed so as to sandwich the engagement hole 32a is easily bent. Further, an operation portion 33 is formed at the upper edge between the cut grooves 32 c of each side wall 32, and a notch 31 a is formed in the vicinity of both sides of the cap body 31 so as to surround the operation portion 33. . When a force is applied to each operation portion 33 so as to bend toward the notch 31a, a portion between the cut grooves 32b and 32c is bent, and a portion surrounding the engagement hole 32a is deformed. That is, an engagement portion 32d for engaging with the terminal block 2 is formed at the center portion in the front-rear direction of the side wall 32 so as to surround the engagement hole 32a.

  When the protective cap 3 is attached to the terminal block 2, the side wall 32 extends along the outer surface of the protective wall 23 of the terminal block 2 and the protective cap 3 is moved from the upper side to the lower side of the terminal block 2. The portion 32d is brought into contact with the guide surface 27a of the engagement claw 27 and bent, and the engagement hole 32a provided in the engagement portion 32d and the engagement claw 27 are engaged. Thereby, the protective cap 3 is engaged with the terminal block 2. When removing the protective cap 3 from the terminal block 2, a force is applied to each operation portion 33 to bend it toward the notch 31a, and the protective cap 3 is pulled upward in that state. Thereby, the engagement between the engagement claw 27 and the engagement hole 32 a is released, and the protective cap 3 can be removed from the terminal block 2.

  Next, a modular jack protective cap removing tool (hereinafter simply referred to as a protective cap removing tool) according to the first embodiment of the present invention will be described with reference to FIGS. FIG. 4 shows the configuration of the protective cap removal tool 50 according to the first embodiment, and shows a state before the protective cap removal tool 50 is attached to the protective cap 3 of the modular jack 10. 5 to 8 show a procedure for removing the protective cap 3 from the terminal block 2 of the modular jack 10 using the protective cap removing tool 50, respectively. FIG. 9 shows a state before the protective cap removing tool 50 is attached to the protective cap 3. Further, FIG. 10 shows a state after the protective cap removing tool 50 is attached to the protective cap 3.

  As shown in FIGS. 4 to 8, the protective cap removal tool 50 is formed at one end of a grip 40 that is large enough to be gripped by the operator's palm, and the twisted pair cable is connected to the other end of the grip 40. A press-fitting tool 60 for press-fitting the four electric wires 5 into the press-contact slit of the terminal plate is formed. The grip 40 is integrally formed with the protective cap removal tool 50 and the press-fit tool 60 by resin molding, for example. Note that the press-fitting tool 60 is not directly related to the present invention, and thus the description thereof is omitted.

  The protective cap removal tool 50 includes a front wall 51 that is in contact with the front end surface of the protective cap 3, side walls 52 that are in contact with both side walls 32 of the protective cap 3, and a ceiling surface 53 that is formed inside the grip 40. It consists of The front wall 51 of the protective cap removing tool 50 functions as a guide when the protective cap removing tool 50 is further mounted on the protective cap 3 fitted to the terminal block 2 of the modular jack 10.

  As shown in FIG. 9, the first inclined surface 52 a is formed so that the distance from each other becomes narrower toward the ceiling surface 53 from the tip of the opposing surface of each side wall 52 to the vicinity of the center portion. In addition, from the vicinity of the center portion of the opposing surface of each side wall 52 to the terminal end, the distance between the first inclined surfaces 52a is narrower as the distance between the first inclined surfaces 52a becomes narrower as the ceiling surface 53 is approached. A second inclined surface 52b is formed. That is, on the basis of the second inclined surface 52b, the first inclined surface 52a protrudes inward from the second inclined surface 52b. The dimension L1 of the narrowest portion in the interval between the first inclined surfaces 52a is set to be narrower than the maximum width L2 between the operation portions 33 of the protective cap 3. In addition, the operation portion 33 of the protective cap 3 is formed with a projection 33a that also serves as a slip stopper. As is clear from FIG. 4, the first inclined surface 52 a is formed only in a portion corresponding to the vicinity of the operation portion 33 of the protective cap 3.

  Next, a procedure for removing the protective cap 3 from the terminal block 2 of the modular jack 10 using the protective cap removing tool 50 will be described. First, as shown in FIG. 4, the protective cap 3 fitted to the terminal block 2 of the modular jack 10 and the protective cap removing tool 50 formed at one end of the grip 40 are opposed to each other. In this state, the modular jack 10 and the grip 40 are brought close to each other, and the protective cap removing tool 50 is attached to the protective cap 3 from the outside. At that time, the first inclined surface 52a of each side wall 52 of the protective cap removing tool 50 abuts on the operating portion 33 of the protective cap 3 and gradually elastically deforms the operating portion 33 according to the inclination. When the first inclined surface 52a of each side wall 52 of the protective cap removing tool 50 gets over the protrusion 33a of the operation portion 33 of the protective cap 3, the protective cap removing tool 50 is attached to the protective cap 3, as shown in FIG. Is done.

  At that time, as shown in FIG. 10, the protrusion 33a of the operation portion 33 of the protective cap 3 is located at a position facing the second inclined surface 52b of the side wall 52 of the protective cap removing tool 50, and is opposed to the second inclined surface 52b. The edge of the first inclined surface 52a protruding in this manner functions as a hook that engages with the protrusion 33a. Therefore, even if the protective cap 3 is pulled downward in FIG. 10 with respect to the protective cap removing tool 50, the engagement between the protrusion 33a and the edge of the first inclined surface 52a that functions as a hook is not released. Further, the operating portion 33 of the protective cap 3 has an engaging claw 27 (see FIG. 1 or 2) formed on the outer surface of the protective wall 23 on the terminal block 2, and an engaging hole 32 a in the side wall 32 of the protective cap 3. It has been deformed to such an extent that it can be detached from. At this time, the engaging claw 27 on the terminal block 2 and the engaging hole 32a of the side wall 32 of the protective cap 3 do not have to be completely separated from each other, and the protective cap 3 is separated from the terminal block 2 of the modular jack 10. It is only necessary that the amount of engagement between the two is reduced to such an extent that they can be easily removed. In addition, the elasticity of the side wall 52 of the protective cap removal tool 50 is lower (hard) than the elasticity of the side wall 32 of the protective cap 3.

  As shown in FIG. 5, the operator holds the housing 1 of the modular jack 10 with one hand in a state in which the protective cap removal tool 50 is further attached to the protective cap 3 fitted to the terminal block 2 of the modular jack 10. When the grip 40 is gripped with the other hand and the modular jack 10 and the grip 40 are separated, the engagement between the engagement claw 27 on the terminal block 2 and the engagement hole 32a of the side wall 32 of the protective cap 3 is performed. The protective cap 3 is detached from the terminal block 2 of the modular jack 10 as shown in FIG.

  As described above, when the protective cap removing tool 50 is attached to the protective cap 3, even if the protective cap 3 is pulled downward in FIG. Cannot be removed from the protective cap removal tool 50. Therefore, as shown in FIG. 7, the protective cap 3 is slid along the ceiling surface 53 of the protective cap removing tool 50 to the side opposite to the front wall 51. Then, as shown in FIG. 8, the operation portion 33 of the protective cap 3 is separated from the side wall 52 of the protective cap removing tool 50, and the protective cap 3 can be removed from the protective cap removing tool 50.

  Thus, according to the protective cap removing tool 50 according to the first embodiment of the present invention, when the protective cap removing tool 50 is attached to the protective cap 3, the first inclined surface 52a formed on the opposing surface of each side wall 52. Touches the operating portion 33 formed on the side wall 32 of the protective cap 3 so that the engaging claw 27 on the terminal block 2 and the engaging hole 32a of the side wall 32 of the protective cap 3 are disengaged. 33 is elastically deformed. Therefore, the protective cap 3 can be removed from the terminal block 2 of the modular jack 10 by an extremely simple operation. Further, since the protective cap removing tool 50 is formed at one end of the grip 40, the protective cap 3 can be removed from the terminal block 2 of the modular jack 10 with a relatively small operating force. Furthermore, since the protective cap removing tool 50 is integrally formed with the grip 40 together with the press fitting tool 60 by resin molding, the protective cap removing tool 50 can be provided at low cost.

  Next, a modular jack protective cap removal tool according to a second embodiment of the present invention will be described with reference to FIGS. 11 and 12. FIG. 11 shows a state before the protective cap removing tool 70 according to the second embodiment is attached to the protective cap 3. FIG. 12 shows a state after the protective cap removing tool 70 is attached to the protective cap 3.

  As is clear from FIGS. 11 and 12, the protective cap removal tool 70 is clip-shaped, and is supported by a central shaft 71 and arranged in a substantially symmetrical manner in front view. A torsion spring 74 that urges the engaging portions 73 in the vicinity of the distal end portion of the member 72 in a direction in which they abut against each other is formed. The distance from the central shaft 71 to the hook portion 73 a of the engaging portion 73 of each clip member 72 is set to be slightly longer than ½ of the width direction dimension of the protective cap 3.

  When the protective cap 3 is removed from the terminal block 2 of the modular jack 10 using the protective cap removing tool 70, the operation portions 75 in the vicinity of the rear ends of the clip members 72 are sandwiched with fingers and pressed in a direction to approach each other. Protective caps fitted to the terminal block 2 of the modular jack 10 between the hook portions 73a in a state where the space between the hook portions 73a of the engaging portions 73 of the clip members 72 is wider than the widthwise dimension of the protective cap 3 Position 3 Then, when the finger is released from the operation portion 75 of each clip member 72, the engaging portion 73 of each clip member 72 rotates in a direction approaching each other by the elastic force of the spring 74. Then, as shown in FIG. 12, the hook portion 73 a of the engaging portion 73 of each clip member 72 is engaged with the protrusion 33 a formed on the operation portion 33 of the protective cap 3. The urging force of the spring 74 is transmitted to the operation portion 33 of the protective cap 3 via the clip member 72 and its hook portion 73 a, and the operation portion 33 of the protective cap 3 is applied to the outer surface of the protective wall 23 on the terminal block 2. The formed engaging claw 27 is deformed to such an extent that it can be detached from the engaging hole 32 a of the side wall 32 of the protective cap 3.

  In a state where the protective cap removal tool 70 is further attached to the protective cap 3 fitted to the terminal block 2 of the modular jack 10, the operator holds the housing 1 of the modular jack 10 with one hand and uses the other hand. When the operation part 75 of the protective cap removing tool 70 is grasped and the modular jack 10 and the protective cap removing tool 70 are separated, the engagement claw 27 on the terminal block 2 and the engagement hole 32a of the side wall 32 of the protective cap 3 are formed. The engagement is released, and the protective cap 3 is removed from the terminal block 2 of the modular jack 10.

  As described above, the protective cap removing tool 70 according to the second embodiment can also remove the protective cap 3 from the terminal block 2 of the modular jack 10 by an extremely simple operation, as in the case of the first embodiment. . Moreover, since the structure of the protective cap removal tool 70 is very simple, the protective cap removal tool 70 can be provided at low cost.

  Next, a modular jack protective cap removal tool according to a third embodiment of the present invention will be described with reference to FIGS. 13 and 14. FIG. 13 shows a state before the protective cap removing tool 80 according to the third embodiment is attached to the protective cap 3. FIG. 14 shows a state after the protective cap removing tool 80 is attached to the protective cap 3.

  As apparent from FIGS. 13 and 14, the protective cap removal tool 80 has a substantially U-shaped cross section, and the inner peripheral surface of the tip of the leg 81 having a substantially U shape protrudes from the outer peripheral surface. An inclined surface 82 is formed at the tip. The dimension L3 between the inner peripheral surfaces of the legs 81 of the protective cap removing tool 80 is substantially the same as the width between the surfaces of the modular jack 10 on which the engaging claws 27 of the terminal block 2 protrude. The height is set to be higher than the height from the bottom surface of the terminal block 2 of the modular jack 10 to the lower surface of the engaging claw 27.

  When the protective cap 3 is removed from the terminal block 2 of the modular jack 10 using the protective cap removing tool 80, the lower side of the modular jack 10 is set so that each leg 81 faces the engaging claw 27 from the bottom surface of the terminal block 2. A protective cap removing tool 80 is disposed on the surface. In this state, when the protective cap removal tool 80 is moved upward so that the inner peripheral surface 81a of each leg 81 is along the outer surface of the protective wall 23 of the terminal block 2, the inclined surface 82 at the tip of each leg 81 is moved. The lower end surface of the side wall 32 of the protective cap 3 fitted to the terminal block 2 comes into contact. When the protective cap removal tool 80 is further moved upward, the tip of each leg 81 is wedged by the inclined surface 82, so that the gap between the outer surface of the protective wall 23 of the terminal block 2 and the side wall 32 of the protective cap 3 is between. And the operation portion 33 is deformed in the vicinity of the engaging hole 32a on the side wall of the protective cap 3 and the operation portion 33 so that the engaging claw 27 can be detached from the engaging hole 32a on the side wall 32 of the protective cap 3. In this state, when a claw tip is inserted into the gap between the protective cap 3 and the terminal block 2, the protective cap 3 is easily removed from the terminal block 2 of the modular jack 10.

  As described above, the protective cap removing tool 80 according to the third embodiment also removes the protective cap 3 from the terminal block 2 of the modular jack 10 by an extremely simple operation as in the case of the first or second embodiment. be able to. Moreover, since the structure of the protective cap removal tool 80 is very simple, the protective cap removal tool 70 can be provided at low cost.

  The present invention is not limited to the above embodiments, and is a protective cap removal tool that is attached to the protective cap 3 in a state where the protective cap 3 is fitted to the terminal block 2. And the engaging portion of the side wall 32 so that the engaging portion of the terminal block 2 (the engaging claw 27 and the engaging hole 32a) is disengaged. What is necessary is just to provide the contact part for elastically deforming the vicinity.

The perspective view which shows the structure of a modular jack. The perspective view which shows the connection state of the terminal part of the said modular jack. The perspective view which shows the structure of the protective cap of the said modular jack. The perspective view which shows the state before mounting | wearing the protective cap of a modular jack with the protective cap removal tool while showing the structure of the protective cap removal tool which concerns on 1st Embodiment of this invention. The perspective view which shows one procedure which removes a protection cap from the terminal block of a modular jack using the protection cap removal tool which concerns on 1st Embodiment. The perspective view which shows the continuation of the procedure which removes the said protective cap. The perspective view which shows the continuation of the procedure which removes the said protective cap. The perspective view which shows the continuation of the procedure which removes the said protective cap. Front sectional drawing which shows the state before mounting | wearing the protective cap with the protective cap removal tool which concerns on 1st Embodiment. Front sectional drawing which shows the state after mounting | wearing the protective cap with the protective cap removal tool which concerns on 1st Embodiment. The front fragmentary sectional view which shows the state before mounting | wearing the protective cap with the protective cap removal tool which concerns on 2nd Embodiment. The front fragmentary sectional view which shows the state after mounting | wearing the protective cap with the protective cap removal tool which concerns on 2nd Embodiment. The front fragmentary sectional view which shows the state before mounting | wearing the modular jack and the protective cap with the protective cap removal tool which concerns on 3rd Embodiment. The front fragmentary sectional view which shows the state after mounting | wearing the modular jack and the protective cap with the protective cap removal tool which concerns on 3rd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing 2 Terminal block 3 Protective cap 10 Modular jack 50 Modular jack protective cap removal tool 51 Front wall 52 Side wall 53 Ceiling surface 70 Modular jack protective cap removal tool 71 Central shaft 72 Clip member 73 Engagement part 73a Hook part 74 Spring 75 Operation unit 80 Modular jack protective cap removal tool 81 Leg 82 Inclined surface

Claims (1)

A housing formed of insulating resin, a terminal block mounted on the housing, and a protective cap formed of insulating resin and fitted in the vicinity of the connection portion of the terminal block, and with a projection for preventing attachment and detachment operation A modular jack protective cap removal tool comprising: a protective cap mounted on a terminal block in a state in which the protective cap is fitted to a terminal block, and disengaging the engaging portion between the protective cap and the terminal block. The contact portion for contacting the side wall on the protective cap side and elastically deforming the vicinity of the engagement portion of the side wall,
The ceiling surface facing the top surface of the protective cap is a grip gripped by an operator, and a pair of side walls formed on the ceiling surface so as to protrude from the ceiling surface and to face the side walls of the protective cap. The abutting portion is an inclined surface formed on an opposing surface of the pair of side walls and abutting against an engaging portion formed on the side wall of the protective cap. A pair of first inclined surfaces formed to face each other and a pair of second inclined surfaces formed so as to reach the ceiling surface by connecting the first inclined surface to the ceiling surface. The protrusion of the protective cap is gripped at the step of the connecting portion of the surface with the first inclined surface, so that the protective cap is fixed from both sides and the front end side is opened to engage with the housing. Is to cancel,
A front wall that protrudes from the ceiling surface and abuts against a front end surface of the protective cap; after removing the protective cap from the modular jack terminal block, the protective cap is placed on the front surface of the ceiling; Modular jack protective cap removal tool, which can be removed only by sliding to the opposite side of the wall.

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