JP2013069658A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a connector, which is fixed at a housing of an electronic apparatus so as to protrude from a through slot to the exterior, into a sealed shape that prevents corrosion, dispose a ferrite core in a housing at a distance that prevents noise from occurring in a cable, connecting with the connector, from the connector, and prevent the cost increase due to the increase of the number of components and the deterioration of the reliability such as human errors and contact failures when the ferrite core and the connector are disposed.SOLUTION: One end of a cable 4 electrically connects with an electric or electronic apparatus in a housing 5, and a connector part 20c connects with the other end of the cable 4 and is inserted into a through slot 5a of the housing 5 to be attached thereto protruding from the housing 5 to the exterior. A feature of one embodiment is integrally forming an L shaped metal fitting part 20d, serving as a placement part where a ferrite core 7, into which the cable 4 is inserted, is placed and fixed at a distance, preventing noise from superposing on the cable 4, from the connector part 20c, with the connector part 20c at an end part of the connector part 20c which is opposite to an end part protruding to the exterior of the housing 5.

Description

  The present invention relates to a connector connected to a cable inserted through a ferrite core.

  Conventionally, communication base stations include low-output and small-sized outdoor installation type base stations represented by PHS base stations, and high-output and large-sized base stations represented by mobile phone base stations. is there. However, the technology for downsizing mobile phone base stations, which have been large, is also progressing, and an outdoor installation type is being demanded from the standpoint of installation. Since an outdoor installation type base station requires a sealed structure, an external connector is also required.

  In addition, the electronic environment such as communication base stations has deteriorated the electromagnetic environment due to further increase, and there is a risk of malfunction of the electronic device. However, electromagnetic noise generated inside the electronic device may cause electrical noise such as power cables and connector cables. Conducted or radiated to the outside through the connecting cable. As a countermeasure against EMI (Electromagnetic Interference) due to the generation of noise, an annular ferrite core is inserted into a cable of an electronic device to suppress the noise.

  When an external cable with such EMI countermeasures is used, the length of the external cable varies depending on the installation conditions of the electronic device casing, and thus cannot be prepared on the casing supply side. For this reason, it is necessary to provide the ferrite core which is an EMI countermeasure member in a housing | casing.

  In order to effectively use the ferrite core, as shown in FIG. 8, the ferrite core 7 is provided in the vicinity of the connector 2 for connecting an external cable fitted in a housing through hole (not shown) in the electronic device housing 5. Is required to be placed. The connector 2 has a round shape as illustrated in a communication base station that requires a sealed structure, and is fixed to the housing 5 with a flange 3. A cable 4 in the housing 5 is connected to the connector 2, a ferrite core 7 is inserted into the cable 4, and a tip connector 1 for connecting an electronic device is connected to the tip of the cable 4.

  Moreover, as shown in FIG. 9, depending on the EMI countermeasures of the AC (alternating current) input power cables 4a to 4c, a plurality of ferrite cores 7a to 7c may be required. Note that AC-L, AC-N, and FG (ground) of the AC input power cables 4a to 4c represent a three-pronged socket 1a.

  There exists a thing of patent document 1 as a structure which penetrated this kind of ferrite core to the cable.

JP-A-11-7836

  However, as shown in FIG. 8 and FIG. 9 described above, when EMI countermeasures are performed in the ferrite core 7 (7a to 7c), in order to maximize the noise suppression of the ferrite core, as shown in FIG. In addition, the ferrite core 7 must be disposed close to the connector 2. When arranged close to each other in this way, the noise N1 riding on the AC input power cable 4 through the socket 1a and the noise N2 riding on the AC input power cable 4 after the socket 1a are suppressed by the ferrite core 7.

  As shown in FIG. 10B, when the connector 2 and the ferrite core 7 are separated from each other by a predetermined distance, an unremovable noise N3 is put on the AC input power cable 4 between the ferrite core 7 and the connector 2, and the connector 2 is output to the outside of the housing 5 via 2.

  However, as shown in FIG. 10A, when the ferrite core 7 is fixed close to the connector 2, that is, close to the time when the noise N3 is not applied, the ferrite core 7 contacts other electronic components inside the housing 5 due to vibration. Or the weight of the ferrite core 7 may cause the cable 4 to fall off or be damaged. Therefore, a fixing method for the ferrite core 7 must be taken into consideration, such as separately preparing a fixing tool (not shown).

  For example, it is assumed that the ferrite cores 7a to 7c shown in FIG. 9 are fixed as shown in FIG. In order to prevent the ferrite cores 7a to 7c from coming into contact with other electronic components inside the housing 5 due to vibration and damaging them, the cushion materials k1 and k2 are wound, and the fixing members k5 and k6 are bound by the binding bands k3 and k4. It fixes to the housing | casing 5 by.

  Further, the case 5 is assumed to be a die-cast case, and when attaching a screw hole or the like inside the die-cast case 5, the bottom side is easy to process, but the inner side is difficult to process. The fixing position of 7c is the bottom surface. However, since the connector 2 is arranged on the side surface, when the ferrite cores 7a to 7c are fixed to the bottom surface, the optimum arrangement as shown in FIG. 10 (a) cannot be made, and is shown by arrows Y1 and Y2 in FIG. Thus, there is a problem that the connector 2 and the ferrite cores 7a to 7c are separated.

  Further, when the flange type round connector 2 is used as shown in FIG. 8, the diameter D1 of the through hole 5a when the connector 2 is attached to the housing 5 is limited as shown in FIG. Due to this limitation, it is good if the ferrite core 7 is not inserted into the cable 4 as shown in FIG. 12A, but as shown in FIG. 12B, a ferrite larger than the diameter D1 of the through hole 5a is used for noise countermeasures. When the core 7 is inserted through the cable 4, the ferrite core 7 cannot be passed through the through hole 5a. In this case, if the diameter of the through-hole 5a is increased, the mounting area of the flange 3 is increased correspondingly, which becomes a factor that hinders downsizing of the housing.

  In order to solve this, there is a method using a pair of relay connectors 2a and 2b having a size passing through the through-hole 5a as shown in FIG. This is because one relay connector 2a is connected to the cable 4 through which the ferrite core 7 in the housing 5 is inserted, the other relay connector 2b is connected to the cable 4a of the connector 2, and this relay connector 2b is connected to the through-hole 5a. And connected to the other relay connector 2a.

  However, by using the relay connectors 2a and 2b, the cable length may become longer than necessary, and the ferrite core 7 and the connector 2 cannot be arranged close to each other in FIG. In addition, there is a problem in that reliability increases such as cost increase due to an increase in the number of parts, human error, and contact failure.

  Further, as shown in FIG. 14, the internal connector 2a connected to the rear end portion of the cable 4 through which the annular ferrite core 7 has been inserted in advance is inserted from the through-hole 5a and protruded to the outside so that the housing 5 There is also a configuration in which the external connector 2b is inserted into and fitted into the fixed connector 2a to be electrically connected.

  This conventional configuration has the following problems. Assume that the electronic device is, for example, a communication base station, and this communication base station is outdoors, and the internal connector 2a and the external connector 2b are installed upward as shown in FIG. In this case, since the O-ring 10 is interposed between the connector 2a and the inner wall of the housing 5 for waterproofing, if rainwater 11 enters from the gap between the external connector 2b and the housing 5, the rainwater 11 stops at the O-ring 10 and does not enter the housing 5. However, since rainwater 11 accumulates in a gap from the O-ring 10 toward the outside, that is, a gap between the housing 5 and each of the connectors 2a and 2b, the housing 5 corrodes and eventually rainwater 11 enters the inside. End up. Since water droplets may accumulate in this way, there is a problem that they are easily affected by erosion.

  The present invention has been made to solve the above-described problems, and provides a connector that can be fixed in a hermetically sealed manner without eroding a connector that protrudes and is fixed to a housing of an electronic device from a through hole. With the goal.

  In order to solve the above-described problems, the present invention provides a connector in which a connector portion is inserted through a through-hole of a housing and a connector portion projects from the inside of the housing to be mounted outside. The connector portion is fixed, and the connector portion is formed integrally with the fixing portion.

  In the present invention, the ferrite core is placed at a distance such that noise is not superimposed on the cable with respect to the connector portion.

  In the present invention, the fixing portion is formed with a plurality of through holes through which the band is inserted when the ferrite core is mounted and then the band is wound around and fixed to the ferrite core. .

  In the present invention, the fixing portion is an attachment type that is detachably separable from the connector portion.

  In the present invention, a through-hole penetrating in the radial direction of the cylindrical shape is formed in the circumferential wall of the cylindrical flange fitted and fixed to the through-hole of the housing, and the connector portion is provided with the flange. A screw hole is formed in the radial direction at a position overlapping with the through-hole when the connector portion is inserted and fitted to a predetermined position.

  The present invention is characterized in that a projection is provided on the circumferential surface of the connector portion, and a slit is formed in the circumferential wall of the flange so that the projection can move in the insertion direction of the connector portion from the opening end.

  In this invention, the said fixing | fixed part is detachable and detachable by fastening so that the edge part by the side of the said housing | casing of the said connector part may be pinched | interposed.

  ADVANTAGE OF THE INVENTION According to this invention, it can fix to the housing | casing of an electronic device in the airtight state which does not erode the connector protruded and fixed to the exterior from a through-hole.

It is sectional drawing which shows the structure of the connector which concerns on embodiment of this invention. It is an exploded view which shows the structure of the connector which concerns on embodiment of this invention. It is a figure which shows the structure of a connector part with an L-shaped metal fitting part. It is a figure which shows the structure at the time of mounting and fixing a ferrite core to the L-shaped metal fitting part of a connector part. It is a figure which shows the structure at the time of mounting and fixing two ferrite cores in the L-shaped metal fitting part of a connector part. It is a figure which shows the various structure patterns of the attachment type L-shaped metal fitting part and the L-shaped metal fitting part which were detachably separated from the connector part. It is a figure which shows the structure which formed the screw and the projection part in the connector part with an L-shaped metal fitting part, and formed the through-hole and the slit in the surrounding wall of a flange. It is a perspective view which shows the structure of the conventional connector. It is a figure which shows the structure of the connector at the time of using three conventional ferrite cores. It is a figure which shows the right / wrong arrangement position of the conventional ferrite core. It is a figure which shows the structure of the connector at the time of using three conventional ferrite cores. It is a figure which shows the structure of the connector in the case of the presence or absence of the conventional ferrite core. It is a figure which shows the structure of the connector at the time of using the conventional relay connector. It is a figure which shows the structure at the time of using the conventional combination type connector. It is a figure which shows a mode that the water collected in the boundary part of the conventional connector and a housing | casing. It is sectional drawing which shows the structure of the housing side connector of the modification 3 of this embodiment. It is the side view and top view which illustrate only the fixing | fixed part shown in FIG. It is a perspective view explaining attachment of the housing side connector to the housing. It is a figure explaining the variation of arrangement | positioning of the ferrite core to a fixing | fixed part. It is a figure explaining the variation of a fixing | fixed part.

  Hereinafter, an embodiment for carrying out the present invention (hereinafter simply referred to as the present embodiment) will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

(Configuration of this embodiment)
FIG. 1 is a cross-sectional view illustrating a configuration of a connector 100 according to the present embodiment, and FIG. 2 is an exploded view of the connector 100. In FIGS. 1 and 2, the parts are described with a space between them for easy understanding, but the part to be actually fitted is in a sealed state with no gap.

  The connector 100 according to the present embodiment includes a housing-side connector 20 that is inserted into the through-hole 5a from the inner side of the housing 5 of the electrical and electronic equipment, protrudes to the outside, and is fixed to the housing 5 with a flange 21. The housing-side connector 20 that protrudes to the outside of the body 5 and is fixed by a flange 21 is provided with an external-side connector 22 that is joined and electrically connected from the outside by a screw structure.

  The housing-side connector 20 is a ferrite core formed of a connector portion 20c having a plurality of pin portions 20e that are electrical connection portions, and an L-shaped metal fitting fixed to the end surface of the connector portion 20c opposite to the protruding surface of the pin portion 20e. And an attachment portion (also referred to as an L-shaped bracket portion) 20d. The housing-side connector 20 is a characteristic part of the present embodiment. As shown in the side view of FIG. 3A, an L-shaped bracket is provided on the end surface opposite to the end surface from which the pin portion 20e of the connector portion 20c protrudes. The part 20d is formed integrally, and the ferrite core 7 is placed and fixed on the horizontal surface of the L-shaped metal part 20d. That is, the ferrite core mounting portion 20d is a fixed portion on which the ferrite core 7 is placed and fixed.

  As for the mounting position of the ferrite core 7, the distance between the ferrite core 7 and the connector portion 20 c is a distance at which noise is not superimposed on the cable 4. As shown in the top view of FIG. 3 (b), a plurality of through holes 20g are formed in the horizontal portion of the L-shaped bracket part 20d, and the band is wound around the ferrite core 7 around the through holes 20g. The ferrite core 7 is fixed through the binding band 24.

  In addition, a cable 4 for connection to an electronic component in the housing 5 is electrically connected to the housing-side connector 20, and the cable 4 is generated inside the electronic device and transmitted by the cable 4. An annular ferrite core 7 that suppresses electromagnetic noise below the EMI reference value is inserted. The ferrite core 7 is placed on the ferrite core mounting portion 20 d and fixed with a binding band 24.

  The flange 21 has a cylindrical shape, and a convex portion 21e protrudes in an annular shape along the circumferential surface at an intermediate portion of the outer periphery. A circumferential portion on the housing 5 side of the convex portion 21e is a through-hole of the housing 5 The convex portion 21e is inserted into 5a and fixed to the housing 5 with screws 22k. Further, a waterproof O-ring 31 is interposed between the convex portion 21 e and the housing 5. Further, a thread groove 21 c having a sawtooth cross section is formed on the projecting side of the outer peripheral surface of the flange 21 projecting from the housing 5.

  Moreover, the convex part 21a protrudes in the annular | circular shape to the inner peripheral surface at the part which protruded from the housing | casing 5 of the flange 21, and when the connector part 20c is fitted by the inner peripheral surface, opening of the convex part 21a will be carried out. The pin part 20e of the connector part 20c protrudes outward from the part 21b. At this time, an O-ring 32 is interposed between the convex portion 21a and the connector portion 20c.

  The external connector 22 has a cylindrical shape whose inner circumference is fitted to the flange 21, and a screw groove 22 a that is screwed into the screw groove 21 c is formed on the inner peripheral surface. The external connector 22 has an opening having a small diameter on the side opposite to the insertion port of the flange 21 and an external cable fixing connector portion for fixing a cable 23 connected to a power source and other electronic devices not shown in the opening. 22b is inserted.

  The external cable fixing connector portion 22b has a cylindrical shape, and a convex portion 22c protrudes in an annular shape along the circumferential surface at an intermediate portion of the outer periphery. A cable 23 is inserted on the inner peripheral side, and the tip of the cable is connected The cable connection relay portion 22d is fitted. That is, the cable 23 is inserted into the external cable fixing connector portion 22b, and the tip thereof is connected to the cable connection relay portion 22d.

  The external cable fixing connector portion 22b to which the cable 23 is attached is inserted into the external connector 22, and the external grooves 22 are fitted into the flange 21 so that the screw grooves 21c and 22a are screwed together to be coupled. At the time of the screwing, the pin portion 20e is inserted into the cable connection relay portion 22d. Further, an O-ring 33 is interposed between the flange 21 and the external cable fixing connector portion 22b.

(Operation of the embodiment)
Hereinafter, the fixing operation of the connector 100 according to the present embodiment to the housing 5 and the fixing operation of the ferrite core 7 will be described in detail.

  First, as shown in the side views of FIGS. 4A and 4B, after placing the ferrite core 7 on the horizontal portion of the L-shaped metal fitting 20d, the binding band 24 is passed through the through-hole 20g. It is wound around the ferrite core 7 and the ferrite core 7 is fixed. The arrow Y3 shown in FIG. 4B is the direction in which the cable 4 is pulled out.

  Next, as shown in FIG. 4A, the end of the flange 21 is inserted into the through-hole 5 a of the housing 5, and at this time, an O-ring 31 is interposed between the convex portion 21 e and the housing 5. And fixed with screws 22k. The connector portion 20c having the ferrite core 7 fixed thereto is inserted into the opening of the flange 21 fixed to the housing 5, and at this time, an O-ring 32 is interposed between the convex portion 21a and the connector portion 20c so that the connector The portion 20 c is fitted and fixed to the flange 21.

  Next, as shown in FIG. 2, the tip of the cable 23 is connected to the cable connection relay portion 22d, and the cable connection relay portion 22d is fitted to the inner peripheral side of the external cable fixing connector portion 22b. The external cable fixing connector portion 22b to which the cable 23 is attached is inserted into the external connector 22, and the external grooves 22 are fitted into the flange 21 via the O-ring 33, and the screw grooves 21c and 22a are screwed together. And combine. At the time of this screwing, the pin portion 20e is inserted into the cable connection relay portion 22d.

  As a result, as shown in FIG. 1, the flange 21 is screwed to the housing 5, and the connector portion 20 c is fitted and fixed to the flange 21 from the inside of the housing 5. The external cable fixing connector portion 22b in which the cable connection relay portion 22d is fitted is screwed and fixed. That is, the connector 100 having this configuration is fixed to the housing 5.

  At this time, an O-ring 31 is interposed between the casing 5 and the flange 21 on the outer side of the casing 5, and an O-ring 32 is interposed between the inner peripheral side of the flange 21 and the connector portion 20c. Since the O-ring 33 is interposed between the projecting portion to the outside of the flange 21 and the external cable fixing connector portion 22b, the external connector 22 is screwed and fixed to the flange 21, so that the connector 100 and the housing 5 The gap is eliminated, and water such as rainwater does not enter the inside of the housing 5.

(Effect of embodiment)
As described above, the connector 100 according to the present embodiment is connected to the other end of the cable 4, one end of which is electrically connected to the electrical and electronic equipment in the housing 5, and is inserted into the through hole 5 a of the housing 5. Then, the connector portion 20c protrudes from the inside of the housing 5 and is attached. The feature of this embodiment is that the ferrite core 7 inserted into the cable 4 is connected to the end of the connector portion 20c opposite to the protruding end portion of the housing 5 to the outside of the housing 5, and noise is generated with respect to the connector portion 20c. The L-shaped bracket part 20d as a fixed part that is placed and fixed at a distance that is not superimposed on the connector part 20c is formed integrally with the connector part 20c.

  Thus, if the ferrite core 7 is placed and fixed on the L-shaped metal part 20d of the connector part 20c inside the housing 5, noise is inevitably superimposed on the cable 4 with respect to the connector part 20c. It can be arranged at a distance.

  Further, when the components of the connector 100 are combined and fixed to the housing 5, the O-rings 31 to 34 are disposed and sealed on the outside of the housing 5. The gap with the housing 5 is eliminated, and water such as rain water does not enter the housing 5. Therefore, the connector 100 can be fixed to the housing 5 in a sealed state that does not erode.

  Furthermore, since the L-shaped metal fitting 20d and the O-rings 31 to 34 on which these ferrite cores 7 are placed have simple configurations and are normally used parts, the cost increases due to an increase in the number of special parts as in the conventional case, and human resources are increased. It is possible to prevent a decrease in reliability such as mistakes and poor contact.

  The L-shaped metal fitting 20d has a plurality of through-holes 20g through which the binding band 24 is inserted when the ferrite core 7 is placed and then the binding band 24 as a band is wound around the ferrite core 7 and fixed. It has been configured.

  According to this configuration, since the binding band 24 can be wound around the ferrite core 7 while being inserted through the through-hole 20g, the ferrite core 7 can be firmly fixed to the L-shaped metal fitting 20d.

  In addition, as shown in FIG. 5, it is also possible to fix the ferrite cores 7a and 7b above and below the horizontal part of the L-shaped bracket part 20d. In this case, when the cable 4 is an AC input power cable, an EMI countermeasure can be taken.

(Modification 1 of embodiment)
In addition, as shown to Fig.6 (a), the connector part 20c-1 and the L-shaped metal fitting part 20d-1 are isolate | separated, and the L-shaped metal fitting part 20d-1 is fixed to the connector part 20c-1. It is good also as an attachment structure. As shown in FIGS. 6B and 6C, the attachment type L-shaped metal fitting portion 20d-1 has a plurality of through holes 20g, and ferrite is inserted through the binding band 24 into the through holes 20g. It is wound around the core 7 and fixed.

  Also, as shown in FIGS. 6D and 6E, an L-shaped metal fitting 20d-2 for mounting and fixing a small ferrite core 7d may be used. The L-shaped metal part 20d-2 is smaller than the L-shaped metal part 20d-1.

  Also, as shown in FIGS. 6 (f) and 6 (g), it has a horizontal portion extending at right angles to the direction of attachment to the connector portion 20c-1, and the two ferrite cores 7a, 7b extend in the extending direction of the horizontal portion. It is good also as the L-shaped metal fitting part 20d-3 of the structure arrange | positioned so that an annular surface may be opposed. In this example, two ferrite cores 7a and 7b are arranged, but three or more may be arranged.

  Further, as shown in FIGS. 6 (h) and (i), it has a horizontal portion extending in the same direction as the mounting direction to the connector portion 20c-1, and in the extending direction of the horizontal portion, two ferrite cores 7a, 7b may be an L-shaped metal fitting 20d-4 having a configuration in which the annular surfaces are arranged to face each other. In this example, two ferrite cores 7a and 7b are arranged, but three or more may be arranged.

(Modification 2 of embodiment)
As shown in FIG. 7, a protrusion 20k is provided on the peripheral surface of the connector part 20c having the L-shaped metal part 20d, and the protrusion 20k is formed on the peripheral wall of the flange 21 fitted and fixed to the through hole 5a of the housing 5. Is formed as a linear slit 21k that is movable. Further, a screw hole 20m is formed in the circumferential surface of the connector portion 20c, and the circumferential wall of the flange 21 penetrates to a position overlapping the screw hole 20m when the connector portion 20c is fitted into a predetermined position of the flange 21. A mouth is formed, and after the connector portion 20c is fitted into the flange 21, the screw 25 is screwed into the screw hole 20m through the through-hole to fix the connector portion 20c to the flange 21. The screw hole 20m is formed in a direction orthogonal to the insertion direction of the connector portion 20c into the flange 21.

  According to this configuration, the protrusion 20k can be inserted into the slit 21k and fitted into the flange, so that positioning is easy. Further, the connector portion 20c is fitted to the flange 21, and is fixed to the screw hole 20m of the connector portion 20c formed in a direction orthogonal to the fitting direction with the screw 25 through the through hole of the flange 21, so that the fixing strength is high. Get higher. Normally, when the connector portion 20c is inserted into the flange 21 and fitted, a force is applied to the end portion of the fitting entrance of the connector portion 20c, but the force is eliminated by screwing with the screw 22k, so that it is firmly fixed. can do.

  In addition, according to the above configuration, the connector that protrudes and is fixed to the outside of the electronic device casing from the through hole can be fixed in a hermetically sealed manner so that noise does not get on the cable connected to the connector. Ferrite cores can be installed in the housing, and when these ferrite cores and connectors are installed, the cost increases due to an increase in the number of parts, human error, and poor reliability such as poor contact, etc. should be avoided. The connector which can be provided can be provided.

(Modification 3 of embodiment)
FIG. 16 is a cross-sectional view illustrating a configuration of a housing-side connector 200 according to Modification 3 of the present embodiment. 17 is a side view and a plan view illustrating only the fixing portion shown in FIG. FIG. 18 is a perspective view illustrating attachment of the housing side connector 200 to the housing 5. Since the external connector 22 has already been described in detail, description and illustration are omitted. In addition, the constituent elements already described in detail in the above embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  In the embodiment described above, as shown in FIG. 1, the housing side connector 20 is configured by fitting and fixing the connector portion 20 c formed integrally with the ferrite core mounting portion 20 d (fixed portion) to the flange 21. The housing-side connector 20 is attached to the housing 5 by screwing a convex portion 21e provided on the flange 21 with a screw 22k. On the other hand, the housing side connector 200 shown in FIG. 16 (a) is detachably attached to the connector portion 210 in which the connector portion 20c and the flange 21 of the housing side connector 20 in FIG. It is comprised by the attachment-type fixing | fixed part 220 which can be separated into.

  The fixing portion 220 corresponds to the ferrite core mounting portion 20d of the housing-side connector 20 of FIG. 1, and particularly in the present embodiment, the housing-side end portion (hereinafter referred to as the end portion 210a) of the connector portion 210 is sandwiched. It is concluded there. Specifically, as shown in FIG. 16 (b), the fixing portion 220 includes an upper fixing portion 222 that is mounted on the upper side of the end portion on the housing 5 side of the connector portion 210 in the through-hole 5 a of the housing 5. And a lower fixing portion 224 attached to the lower side of the end portion.

  As shown in FIG. 17 (a), a horizontal portion 226 is integrally formed at the lower end of the lower fixing portion 224 so as to stand in a horizontal direction therefrom. FIG. 17B is a top view of FIG. 17A, and as shown in this figure, the horizontal portion 226 has a plurality of through holes 20g. In the fixing part 220 of FIG. 17 as well as the housing side connector 20 of FIG. 1, the binding band 24 is inserted into the through-hole 20g, and the binding band 24 is wound around the ferrite core 7, so that FIG. As shown, the ferrite core 7 can be fixedly placed on the fixing portion 220.

  When attaching the above-described housing-side connector 200 to the housing 5, as shown in FIG. 18A, first, the end portion of the connector portion 210 on the housing 5 side (the side inserted through the through-hole 5a of the housing 5). 210a is inserted into the through-hole 5a from the outside of the housing 5. And it fixes with the screw 22k (refer FIG. 16) in the state which interposed the O-ring 31 (refer FIG. 16) between the convex part 21e and the housing | casing 5. FIG. Thereby, as shown in FIG.18 (b), the connector part 210 will be in the state attached to the housing 5. FIG.

  Next, in the fixing portion 220 shown in FIG. 17A, the upper fixing portion 222 is disposed above the end portion 210a, the lower fixing portion 224 is disposed below the end portion 210a, and is inserted into the through hole 5a. The end portion 210 a is sandwiched between the fixing portion 222 and the lower fixing portion 224. Then, the upper fixing portion 222 and the lower fixing portion 224 are fixed with screws 228. As a result, the upper fixing portion 222 and the lower fixing portion 224 are fastened and fixed to the end portion 210a as shown in FIG. 18 (c), and the housing side connector 200 is attached to the housing 5 as shown in FIG. 16 (a). It is done.

  Also with the above configuration, the ferrite core 7 placed on the horizontal portion 226 of the fixed portion 220 is disposed in the vicinity of the connector portion 210. Therefore, the noise suppression effect by the ferrite core 7 can be maximized. Further, since the ferrite core 7 and the connector part 210 are close to each other, the occupied volume can be reduced as compared with the case where they are arranged apart from each other, and a compact design is possible.

  In particular, the connector part 210 to which the fixing part 220 is attached is a member in which the connector part 20c and the flange 21 of the housing side connector 20 of FIG. 1 are integrally formed as described above. Therefore, an existing general-purpose connector for connecting an external cable (a so-called round connector) such as an external relay connector 2b (see FIG. 14) used conventionally can be applied to the connector portion 210 as it is. Can be increased. Further, since it is not necessary to create both the connector portion 20c and the flange 21 as in the case of the housing side connector 20, it is only necessary to create the fixing portion 220 corresponding to the connector portion 210, so that the cost can be reduced and the fixing portion can be reduced. By increasing 220 variations (changing the size), it is possible to support various types of general-purpose connectors (connector unit 210).

  Further, as in the present embodiment, the fixing part 220 is divided into two parts, an upper fixing part 222 and a lower fixing part 224, and the end part 210a of the connector part 210 is sandwiched and fixed by them so that the types of general-purpose connectors and It is possible to absorb the shape difference (dimension difference) of the connector (connector portion 210) due to the difference in connector manufacturer.

  Specifically, the inner diameter of the fixing portion 220 is set larger than the diameter of the end portion 210a, and the fixing portion 220 is fitted to the end portion 210a with a cushion material (not shown) interposed. For example, if the inner diameter of the fixed portion 220 is set to a diameter matching the end portion 210a having the largest diameter, the end portion 210a having a smaller diameter is fitted with a cushioning material around the end portion 210a. Thus, when the upper fixing portion 222 and the lower fixing portion 224 are tightened, the cushion material is crushed and deformed, and the gap between the fixing portion 220 and the end portion 210a is filled. Therefore, a dimensional difference can be absorbed.

  FIG. 19 is a diagram for explaining a variation of the arrangement of the ferrite core 7 on the fixing portion 220. As shown in FIG. 19A, the ferrite core 7 may be fixed above and below the horizontal part 226 of the fixing part 220. This configuration is particularly suitable for EMI countermeasures when the cable 4 (see FIG. 16) is an AC input power cable. In FIG. 16, the ferrite core 7 is placed so that its annular surface faces the housing 5, but the present invention is not limited to this, as shown in FIGS. 19 (b) and 19 (c). It is also possible to place the ferrite core 7 so that the annular surface is orthogonal to the housing 5. Thereby, the cable 4 can be pulled out to the side.

  FIG. 20 is a diagram for explaining a variation of the fixing portion 220. In FIGS. 20A and 20B, an extension portion 226 a is provided on the horizontal portion 226 of the fixing portion 220 in a direction orthogonal to the direction of attachment to the housing 5. According to this, similarly to FIGS. 6 (f) and 6 (g), it is possible to arrange a plurality of ferrite cores 7 in a state where the annular surface is orthogonal to the housing 5 in one fixing portion 220. . 20C and 20D, the horizontal portion 226 of the fixed portion 220 is extended in the direction opposite to the direction in which the fixing portion 220 is attached. According to this, similarly to FIGS. 6 (h) and (i), it is possible to arrange a plurality of ferrite cores 7 with the annular surface facing the housing 5 in one fixing portion 220. . 20 illustrates the case where two ferrite cores 7 are arranged, but the present invention is not limited to this, and a configuration in which three or more ferrite cores 7 are arranged is naturally possible.

  As mentioned above, although preferred embodiment of this invention was explained in full detail, it cannot be overemphasized that the technical range prediction of this invention is not limited to the range prediction as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiments. In addition, it is apparent from the description of the scope of claims that embodiments to which such changes or improvements are added can also be included in the scope of prediction of the present invention.

4.23 ... Cable, 5 ... Case, 5a / 20g ... Through hole, 7 ... Ferrite core, 20 ... Case side connector, 20e ... Pin part, 20c ... Connector part, 20d ... L-shaped bracket part (ferrite core mounting Part), 20g ... through hole, 21 ... flange, 21a / 21e / 22c ... convex part, 22k / 25 ... screw, 21c / 22a ... screw groove, 22 ... external connector, 22a ... screw groove, 22b ... external cable fixing Connector part, 22d ... Cable connection relay part, 24 ... Binding band, 31-34 ... O-ring, 200 ... Housing side connector, 210 ... Connector part, 210a ... End part, 220 ... Fixing part, 222 ... Upper fixing part, 224 ... Lower fixing part, 226 ... Horizontal part, 226a ... Extension part, 228 ... Screw

Claims (7)

In the connector that is inserted through the through-hole of the housing and the connector part protrudes from the inside of the housing and is attached,
Having a fixing portion on which the ferrite core in the casing inserted through the cable is placed and fixed;
The connector portion is formed integrally with the fixed portion.   The connector according to claim 1, wherein the ferrite core is placed at a distance such that noise is not superimposed on the cable with respect to the connector portion.   The plurality of through holes through which the band is inserted when the band is wound around and fixed to the ferrite core after the ferrite core is mounted on the fixing portion. Connector.   The connector according to claim 1, wherein the fixing portion is an attachment type that is detachable from the connector portion.   A through-hole penetrating in the cylindrical radial direction is formed in the circumferential wall of the cylindrical flange fitted and fixed to the through-hole of the housing, and the connector portion is formed on the flange in the connector portion. The connector according to any one of claims 1 to 3, wherein a screw hole is formed in the radial direction at a position overlapping with the through-hole when inserted and fitted to a predetermined position.   6. A projection is provided on a circumferential surface of the connector portion, and a slit is formed on a circumferential wall of the flange so that the projection can move from the opening end in the insertion direction of the connector portion. connector.   The connector according to claim 4, wherein the fixing portion is detachable and detachable by fastening so as to sandwich an end portion of the connector portion on the housing side.

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