JP3247651B2 - Seat cap - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap capable of pressing an end of a sheet covering a cable.

[0002]

2. Description of the Related Art FIG. 11 shows a conventional sheet holding cap of this type. As shown in the figure, a cylindrical housing 4 for passing a cable 3 into and out of the wall 1 is attached to a through hole 2 formed in the wall 1 of the apparatus. A sheet 5 is wound around a portion of the cable 3 extending outward from the housing 4,
The end of the sheet 5 is laid on the outer surface of a cylindrical case 6 provided at one end of the housing 4. The conventional sheet pressing cap 7 includes a pair of cap members 7A, 7A obtained by dividing a cylindrical body into two vertically and is attached to the outer surface of the cylindrical case 6 from above the seat 5. It has become. A pair of annular ribs 8 are formed on the inner surfaces of the cap components 7A, 7A, and these ribs 8 enter a pair of annular grooves 9 formed on the outer surface of the cylindrical case 6. Then, the sheet 5 is sandwiched and held by the annular rib 8 and the annular groove 9 in a bent state.

[0003]

There are various types of sheets, such as a sheet for mere protection and a sheet provided with a shield layer for blocking noise, and the sheets have different thicknesses.
In addition, in the sheet holding cap 7 having the above configuration, the sheet 5 is only sandwiched between the cylindrical case 6 and the sheet holding cap 7, and therefore, it is impossible to cope with a difference in the thickness of the sheet. For this reason, if the sheet 5 is thick, the annular rib 8 and the annular groove 9 do not engage with each other, and if the sheet 5 is thin, the holding of the sheet 5 is weakened. Further, since the sheet 5 is locally bent by the annular rib 8 and the annular groove 9, the sheet 5 may be broken.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a sheet holding cap capable of coping with a difference in sheet thickness and holding the sheet without applying excessive force. .

[0005]

In order to achieve the above object, according to the first aspect of the present invention, an end portion of a sheet covering a cable is laid on an outer surface of a cylindrical case through which a cable can be inserted, In a sheet holding cap that can hold the end of the sheet by being attached to the outer surface of the tubular case from above the end of the sheet, the tubular body is divided vertically, and the tubular body is separated from each other in a state surrounding the tubular case. A plurality of cap components formed so as to be joinable, an engagement portion provided on the cap components and engaging with each other when the cap components are joined together, and an inner surface of at least one cap component. The present invention is characterized in that it is provided with an elastic pressing piece which always projects and which elastically comes into contact with the sheet on the outer surface of the cylindrical case when the cap components are joined together.

According to a second aspect of the present invention, in the sheet holding cap according to the first aspect, a concave portion is formed on an inner surface of the cap assembly, and a base end portion of the elastic pressing piece is arranged inside the concave portion. When the tip of the elastic holding piece is projected from the inner surface of the cap member and the cap members are joined to each other, the holding piece is pressed by the cylindrical case and elastically deforms, and the tip of the holding member and the cap structure are deformed. The feature is that the inner surface of the body is flush.

[0007]

According to the first aspect of the present invention, when the cap members are joined to each other so as to surround the cylindrical case, the elastic pressing pieces come into contact with the sheet on the outer surface of the cylindrical case to be elastic. The sheet is deformed, the sheet is pressed against the outer surface of the cylindrical case by the reaction force, and the engaging portions provided on the cap assembly are engaged with each other. At this time, regardless of the thickness of the sheet, the sheet is pressed by the reaction force of the elastic pressing piece, so that the sheet is too thick to join the cap structure, or the sheet is too thin to weakly hold the sheet. There is no such thing. In addition, since the sheet is not locally bent as in the related art, the sheet can be held without applying excessive force.

According to the structure of the second aspect, the tip of the elastic pressing piece and the inner surface of the cap structure are flush with each other, and both press the sheet on the outer surface of the cylindrical case. Accordingly, the entire end of the sheet can be further pressed by the inner surface of the cap structure in a state where the sheet is pressed against the cylindrical case by the reaction force of the elastic pressing piece, and the sheet holding force is improved.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS <First Embodiment> A first embodiment of the present invention will be described below with reference to FIGS. The sheet holding cap 10 of the present embodiment (hereinafter referred to as “cap 1
0 ") is attached to a cable lead-out housing 12 fixed to the wall 11 of the device (see FIG. 4). The housing 12 has a cylindrical shape as a whole, and has a flange 13 near one end thereof. Then, the fitting portion 14 of the housing 12 on the left side of the flange 13 in FIG. 4 is fitted into a through hole 15 formed in the wall portion 11 of the device, and the flange 13 is abutted against the wall portion 11 of the device. Bolt 13 penetrated through its flange 13
B secures to the device.

In addition, an annular groove 16 is formed in the fitting portion 14 along the circumferential direction, and an O-ring 17 is fitted in the annular groove 16 so that waterproof between the fitting portion 14 and the through hole 15 (see FIG. 4) is provided. It is planned.

The right side of the housing 12 in FIG. 4 relative to the flange 13 is a cylindrical case 18 to which the cap 10 of the present embodiment is attached. Cylindrical case 1
An annular groove 19 is formed along the circumferential direction at the base end of the outer surface 8 on the flange 13 side, and the cap 1
The retaining projection 29 provided at 0 is fitted. The outer surface 18A of the cylindrical case 18 is closer to the annular groove 19 than in FIG.
An end portion of a sheet 21 described later is wound around the left cylindrical surface of the sheet.

As shown in FIG. 5, a pair of cables 20, 20 are inserted through the housing 12, and a sheet 21 is wound around a portion of the cable 20 extending from the cylindrical case 18. The sheet 21 is provided with a metal shield layer for blocking noise, is thicker than a sheet only for the purpose of protection without a shield layer, and is wound from the side of the cable 20, The end is laid on the outer surface 18A of the cylindrical case 18. And FIG.
As shown in (2), the tape 21A is wound from above the sheet 21 and held so that the sheet 21 does not open.

In this state, the sheet 21 of the cable 20 is
Is passed through the corrugated tube 30 (see FIGS. 1 to 4). The corrugated tube 30 is formed by forming irregularities at a narrow pitch in the longitudinal direction of the tube.
It has a smaller diameter than that (see FIG. 2).

The cap 10 according to the present embodiment includes a pair of cap members 22 formed by dividing a cylinder into two vertically.
As shown in FIG. 7, the two cap components 22 have a point-symmetrical shape with the joining surfaces 22A facing each other, and both have exactly the same structure. As shown in FIG. 8, each cap component 22 has a structure in which a large-diameter portion 23 and a small-diameter portion 24 are connected by a tapered portion 25. When both cap components 22, 22 are joined to each other. ,
As a whole, one end has a cylindrical shape having a larger diameter than the other end. Then, as shown in FIG. 4, the large diameter portion 23 is fitted to the outer surface 18A of the cylindrical case 18, and the small diameter portion 24 is fitted to the end of the corrugated tube 30.

In FIG. 7, on the left joining surface 22A of the upper cap structure 22, lock pieces 26, 26 are respectively attached to the large diameter portion 23 and the small diameter portion 24.
Extending towards 2. In addition, in FIG. 5, the right joining surface 22A of the upper cap assembly 22 has a frame shape (FIG. ) Are formed. And the lock piece 26
Penetrates through the lock receiving portion 27, and the lock protrusion 26A (see FIG.
7 is locked to the edge 27A.

As shown in FIG. 4, the small diameter portion 24 of the cap member 22 has three ribs 28 projecting in the circumferential direction along the inner peripheral surface thereof. In the groove 30A.

At the tip end of the large-diameter portion 23 of the cap structure 22, a retaining projection 29 is formed to project inward, and the retaining projection 29 is formed in the annular groove 19 of the cylindrical case 18. The cap 10 enters the tubular case 18 to prevent the cap from falling off.

An elastic pressing piece 40 is provided at the center in the width direction of the large-diameter portion 23 of the cap structure 22, as shown in FIG. More specifically, as shown in FIG. 3, the large-diameter portion 23 of the cap
Are formed through the elastic holding piece 40 and the rectangular hole 41
A rectangular flat plate-shaped pressing plate 43 is provided at an end of the pressing plate 43 and extending obliquely inward from the inner peripheral surface of the holding plate 43. The pressing plate 43 always projects inward from the inner surface 22B of the cap component 22. The holding plate 43 is provided on the outer surface 18 of the cylindrical case 18.
A is in parallel with A.

Next, the operation of this embodiment having the above configuration will be described. First, as shown in FIG.
The sheet 21 is wound around the cable 20 by passing through the cable 20, and the end of the sheet 21 is wound around the cylindrical case 18 of the housing 12. In addition, the outside of the sheet 21 is wound and fixed with a tape, and further passed through the corrugated tube 30 (see FIG. 2). Then, as shown in FIG. 2, the joining surfaces 22 </ b> A of the two cap components 22, 22 face each other, and the housing 1 is located between the large-diameter portions 23, 23.
The two cylindrical cases 18 are arranged, the end of the corrugated tube 30 is arranged between the small diameter portions 24, 24, and the two cap components 22, 22 are brought closer to each other. Then, the inner surfaces 22B of both the cap members 22 approach the sheet 21 on the outer surface 18A of the cylindrical case 18, and the pressing plates 4 of the elastic pressing members 40 projecting from the inner surface 22B of the cap member 22.
3 comes into contact with the sheet 21.

Further, when the cap members 22 are brought closer to each other and the space between the outer surface 18A of the cylindrical case 18 and the inner surface 22B of the cap member 22 is reduced, as shown in FIG. The sheet 21 is elastically deformed and the sheet 21 is pressed against the outer surface 18A of the cylindrical case 18 by the reaction force. When the cap members 22 are completely joined together, the retaining projection 29 of the large-diameter portion 23 fits into the annular groove 19 of the cylindrical case 18, and the rib 28 of the small-diameter portion 24 fits the corrugated tube 30. , And the lock pieces 26 and the lock receiving portions 27 provided on the cap members 22 are engaged with each other, and the cap members 22, 22 are held in a joined state.

Here, even if the sheet 21 is pulled, the sheet 21 is pressed against the cylindrical case 18 by the elastic pressing pieces 40, so that the sheet 21 does not shift. In addition, in the cap 10 of the present embodiment, the sheet 21 is pressed by the reaction force of the elastic pressing piece 40 regardless of the thickness of the sheet 21. Cap member 2 even if 21 is held down
There is no possibility that the two 2, 22 cannot be joined. Also, when a thin sheet is pressed, the elastic pressing piece 40 abuts on the thin sheet and is elastically deformed, so that the sheet can be held by the reaction force. In addition, since the sheet 21 is not locally bent as in the related art, the sheet 21 can be held without applying excessive force.

Even if the corrugated tube 30 is pulled, the end of the corrugated tube 30 is not
The cap 10 is retained by the tubular case 18 by the retaining projection 29 so that the corrugated tube 30 does not shift.

<Second Embodiment> A second embodiment is shown in FIGS. 9 and 10, and is different from the first embodiment only in the configuration of the elastic pressing piece 50. The elastic holding piece 50 according to this embodiment has a base end portion which is a large-diameter portion 23 of the cap structure 22.
The inner peripheral surface of the rectangular hole 41 penetrating through is unevenly distributed toward the opening that is open to the outside.
A rectangular flat plate-like pressing plate 43 is provided at the tip end of the pressing plate 43 and extends obliquely toward the inside. The holding plate 43 is always
As shown in FIG. 9, the pressing plate 43 protrudes inward from the inner surface 22 </ b> B of the cap component 22, and when the elastic pressing piece 50 is pressed and elastically deformed, as shown in FIG. Become flush.

According to the structure of this embodiment, both the pressing plate 43 of the elastic pressing piece 50 and the inner surface 22B of the cap assembly 22 come into contact with the sheet 21 on the outer surface 18A of the cylindrical case 18. In a state where the sheet 21 is pressed against the cylindrical case 18 by the reaction force of the elastic pressing piece 50, the sheet 2 is further pressed by the inner surface 22 </ b> B of the cap component 22.
1 can be pressed down, and the holding force of the sheet 21 is improved.

<Other Embodiments> The present invention is not limited to the above embodiments. For example, the following embodiments are also included in the technical scope of the present invention.
In addition to the following, various changes can be made without departing from the scope of the invention.

(1) The elastic pressing piece 4 of the first embodiment
Although 0 is provided for each cap component 22, two or more may be provided. Further, the elastic holding piece may be provided on only one of the two cap components 22, 22.

(2) In the first embodiment, the cap 10 attached to the housing 12 for leading out the cable 20 from the device has been described. For example, the rear end of the connector housing in which terminal fittings are accommodated is provided. It is formed in a tubular shape, a cable connected to the terminal fitting is led out therefrom, and further, an end of a sheet wound around the cable is laid on the tubular portion, but a cap is attached to the tubular portion. It may be.

(3) Although the cap 10 of the above embodiment is configured to hold the corrugated tube 30, the cap 10 may not be able to hold the corrugated tube.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cap and a housing according to a first embodiment of the present invention.

FIG. 2 is a partial side sectional view of a cap and a housing.

FIG. 3 is an enlarged partial sectional side view of a cap and a housing.

FIG. 4 is a partial side sectional view showing an assembled state of a cap and a housing.

FIG. 5 is a perspective view showing a state where a cable is passed through a housing.

FIG. 6 is a perspective view showing a state where a sheet is wound around a cable;

FIG. 7 is a front view of the cap.

FIG. 8 is a plan view of the inside of the cap.

FIG. 9 is an enlarged partial side sectional view of a cap and a housing according to a second embodiment.

FIG. 10 is a partial sectional side view showing an assembled state of a cap and a housing.

FIG. 11 is a partial side sectional view showing an assembled state of a conventional cap.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Sheet holding cap 18 ... Cylindrical case 18A ... Outer surface (outer surface of a cylindrical case) 20 ... Cable 21 ... Sheet 22 ... Cap structure 22B ... Inner surface (inner surface of a cap structure) 26 ... Lock piece (engagement part) 27: lock receiving portion (engaging portion) 40, 50: holding piece 41: rectangular hole (recess) 43: holding plate (tip of holding piece)

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-7-288149 (JP, A) JP-A 10-27645 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H02G 15/02 H02G 3/08 H02G 15/10

Claims (2)

(57) [Claims] An end of a sheet covering the cable is laid on an outer surface of a cylindrical case through which a cable can be inserted,
In a sheet holding cap capable of holding the end of the sheet by being attached to the outer surface of the cylindrical case from above the end of the sheet, the tubular body is divided vertically, and the cylindrical case is divided. A plurality of cap components formed so as to be joined to each other in an enclosing state, an engagement portion provided on the cap components and engaging with each other when the cap components are joined to each other, at least one A sheet retainer, which comprises a resilient retainer that always projects from an inner surface of the cap member and that elastically contacts a sheet on an outer surface of the cylindrical case when the cap members are joined to each other. cap. 2. A concave portion is formed on an inner surface of the cap member, and a base end portion of the elastic pressing member is disposed inside the concave portion, and a distal end portion of the elastic pressing member is always attached to the inner surface of the cap member. When the cap members are joined together, the pressing piece is pressed by the cylindrical case and elastically deforms, so that the tip of the pressing piece and the inner surface of the cap member are flush with each other. The sheet holding cap according to claim 1, wherein: