JP2013016320A - Waterproof cap for electronic equipment case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof cap for an electronic equipment case which can be utilized for waterproofing by being attached to a waterproof cap attaching part that encloses a terminal part in an electronic equipment case as a blind cap, and even if utilized as a blind cap, a cable is inserted through a cable insert hole that is closed in water-tight manner when a waterproof cap is attached to a cable to be connected to an electronic equipment case, for use as a waterproof cap of a terminal part.SOLUTION: Around the cable insert hole, many valve bodies protruding in tapered manner are arranged with a small interval, among others, toward a central part of the hole from each edge of the hole. Each of the valve bodies is formed from elastic material which bends from a free end side to allow insertion of a cable at the time of cable inserting. The valve body lower surfaces are formed in such a manner that valve bodies come away from each other under pressure at the tip end of the cable because they are connected each other with a thin film body, thereby causing a first gap among the many valve bodies, whereas the valve bodies are mutually closed in water-tight manner in a normal condition.

Description

  The present invention relates to a waterproof cap for an electronic device case, and more particularly, to a waterproof cap for an electronic device case used in a place where a cable is connected to an electronic device such as an antenna power supply unit or a booster used outdoors.

Conventionally, a waterproof cap for an electronic device case has been widely known. For example, this type of waterproof cap is disclosed in Patent Document 1.
In patent document 1, while showing sectional drawing of the electronic device case with which the coaxial cable and the waterproof cap were mounted | worn as FIG. 1, there exists description regarding the following structures. That is,
“The upper part of the hollow cylindrical body is provided with an opening that allows watertight mounting to the fitting part in the electronic device case, and the lower part is provided with a through hole through which the cable is inserted. In the waterproof cap for electronic device case, in the inside of the cylindrical body, an annular body is provided so as to project from the inner peripheral surface of the cylindrical body toward the center, and the hole diameter of the central portion of the annular body Is formed smaller than the minimum outer diameter of the cable to be inserted, and the material of the annular body elastically deforms and allows the insertion of cables having different outer diameters, and after the cable is inserted, the outer periphery of the cable It is made of an elastic material that presses against the surface. "

JP 2006-310230 A

This conventional waterproof cap for electronic device cases has an opening at the top of the cylinder and a through hole through which the cable is inserted at the bottom, so it is coaxial with the “terminal” of the electronic device case. If the cable is not connected, even if a waterproof cap is attached to the “waterproof cap mounting part that surrounds the terminal part,” rainwater will be blown by the wind and will enter the inside of the electronic device case through the hole in the waterproof cap. However, there is a problem that it cannot be used for waterproofing the “terminal part” of the electronic device case. Accordingly, there is a troublesome problem that a watertight waterproof cap (blind cap) must be prepared separately from the above-described waterproof cap.
Therefore, a construction worker has been demanded to provide a waterproof cap that can be used as a blind cap.

Further, an annular body made of an elastic material formed smaller than the minimum outer diameter of the cable is provided around the cylindrical body of the conventional waterproof cap.
Therefore, when rainwater blown by strong wind blows inward from the bottom of the waterproof cap, water accumulates on the upper part of the annular body, which may cause harm to the “terminal part” of the electronic device case. there were.

  Furthermore, as described above, “in the inside of the cylindrical body, an annular body made of an elastic material formed smaller than the minimum outer diameter of the cable is provided”, so that the cable is previously provided at the end of the cable. In the case where a plug (coaxial connector) having an outer diameter larger than the outer diameter is attached, there is a problem in work in which a cable with a coaxial connector cannot be inserted. Therefore, an electrician has been demanded to provide a waterproof cap that can be used even with a cable with a coaxial connector.

An object of the present application is to solve the above-described problems and to provide a waterproof cap for an electronic device case that can prevent rainwater from entering the electronic device case.
Another purpose is to provide a versatile waterproof cap for electronic device cases that can be used for waterproofing by being attached to a waterproof cap mounting portion surrounding the terminal portion in the electronic device case as a “blind cap”. is there.
Another purpose is to use a cable insertion hole that is watertightly closed when attaching a waterproof cap to a coaxial cable connected to an electronic device case, even if it can be used as a blind cap. It is intended to provide a waterproof cap for an electronic device case that can be used as a waterproof cap for a terminal portion.
Another purpose is to connect a cable to the terminal part of the electronic device case and attach a waterproof cap to the outer periphery of the cable. Even if rainwater is struck around the cable insertion hole by a strong wind, many valves An object of the present invention is to provide a waterproof cap for an electronic device case that can weaken the rising force of rainwater and protect the terminal portion from rainwater due to the presence of the body.
Another purpose is to prevent in advance the possibility that rainwater that has been blown by strong winds will blow out from the underside of the waterproof cap and that the rainwater that has entered the inside of the cylinder will seep out and harm the terminals of the electronic device case. It is an object of the present invention to provide a waterproof cap for an electronic device case.
The other purpose is that even if a cable having a larger outer dimension than that of the cable, such as a connector, is previously attached to the end of the cable, the second tear is elastically expanded to be more than the cable insertion hole. It is intended to provide a convenient waterproof cap for an electronic device case that can pass a large size, and after that, the second tear is reduced, and there is no risk of greatly impairing the waterproof effect of the waterproof cap. is there.
Other problems, objects and advantages will be readily apparent from the drawings and the following description associated therewith.

  In the present invention, an opening 13 that enables watertight mounting to the waterproof cap mounting portion 7 in the electronic device case 1 is provided in the upper portion of the cylindrical body 11 formed in a hollow cylindrical shape. The lower portion 12 is formed in a funnel shape with a small diameter, and the lower end portion 16 of the cylindrical lower portion 12 can be inserted into the cylindrical interior 11a so that the cable 8 can be inserted into the inner diameter corresponding to the outer dimension W4 of the cable 8. In the waterproof cap for an electronic device case provided with the cable insertion portion 17 having the cable insertion hole 18, the cable insertion portion 17 has a lower end portion 16 at the lower end portion 16 around the cable insertion hole 18. A large number of tapered valve bodies 20 projecting from the hole edge 18a toward the center portion 18b of the hole are disposed with a slight gap 21 therebetween, and each of the valve bodies 20 is inserted when a cable is inserted. , Free end side 20 b is formed of an elastic material so that the cable 8 can be inserted by bending, and the lower surfaces 20c of the numerous valve bodies 20 are pressed against each other by the tip 8e of the cable 8 so that the valve bodies 20 can be mutually connected. The thin film bodies 22 are connected to each other so as to be separated from each other, and are formed so that a first rift 25 can be formed between a large number of valve bodies 20, and the valve bodies 20 are normally water-tightly closed. It is.

  Preferably, an upper portion of the cylindrical body 11 formed in a hollow cylindrical shape is provided with an opening 13 that enables watertight mounting to the waterproof cap mounting portion 7 in the electronic device case 1. 12 is formed in a funnel shape with a small diameter, and a cable 8 having an inner diameter corresponding to the outer dimension W4 of the cable 8 can be inserted into the lower end 16 of the lower part 12 of the cylinder toward the inside 11a of the cylinder. In the waterproof cap for an electronic device case provided with the cable insertion portion 17 having the insertion hole 18, there is a hole around the cable insertion hole 18 of the cable insertion portion 17 in the lower end portion 16 of the cylindrical lower portion 12. A large number of tapered valve bodies 20 projecting from the edge 18a toward the center portion 18b of the hole are disposed with a slight gap 21 therebetween. Bay from the free end 20b side In addition, the cable 8 is formed of an elastic material that allows insertion, and the lower surfaces 20c of the numerous valve bodies 20 are separated from each other by being pressurized by the distal ends 8e of the cables 8. In such a manner, the thin film bodies 22 are connected to each other so that a first rupture 25 is formed between each of the many valve bodies 20, and the valve bodies are normally watertightly closed. In the cylindrical lower part 12 formed in the funnel shape, one or two or more first tears 25 among the many first tears 25 formed between the numerous valve bodies 20 respectively. From the outer peripheral side toward the peripheral wall 15 of the cylindrical lower portion 12 formed in the funnel shape, by pressing with a connector 9 attached to the tip 8e of the cable 8, the vertical direction with respect to the peripheral wall 15 of the cylindrical lower portion 12 A long slit is continuous with the first crack 25 The thin film body 31 is provided with one or two or more second tears 30 that are normally watertight, and the peripheral wall 15 of the cylindrical lower part 12 is provided with the second tear 30. Any material may be used as long as it is made of an elastic material so that it can be expanded and contracted.

   As described above, according to the present invention, the upper portion of the cylindrical body 11 formed in the hollow cylindrical shape enables watertight mounting to the waterproof cap mounting portion 7 of the electronic device case 1, and the lower end portion 16 of the cylindrical lower portion 12 has Even if a cable insertion hole 18 having an inner diameter corresponding to the outer dimension W4 of the cable 8 is provided so that the cable 8 can be inserted toward the inside 11a of the cylinder, the cable insertion hole 18 includes a valve Since a large number of bodies are arranged, the valve bodies 20 are connected to each other with a thin film body 22, and the cable insertion hole 18 is normally watertightly closed (so as to have a waterproof effect). Such a waterproof cap 10 can be used for waterproofing by attaching to the “waterproof cap mounting portion 7 surrounding the terminal portion 5” of the electronic device case 1 as a “blind cap” in response to a request from a construction worker. There is a positive effect.

  Further, as described above, even in the configuration that can be used as a blind cap (watertight waterproof cap), the cable insertion portion 17 at the lower end portion 16 is surrounded by the “cable insertion hole 18”. A large number of tapered valve bodies 20 projecting from the hole edge 18a toward the center portion 18b of the hole 18 are disposed with a slight gap 21 therebetween. When inserted, it is made of an elastic material that is bent from the free end 20b side so that the cable 8 can be inserted, and the lower surfaces 20c of the numerous valve bodies 20 are pressurized by the tips 8e of the cable 8. As a result, the valve bodies 20 are connected to each other by thin film bodies 22 so that the valve bodies 20 are separated from each other, and a plurality of valve bodies 20 are formed so as to have first slits 25, respectively. Coaxial cable 8 and waterproof cap 10, when the tip 8 e of the coaxial cable 8 is pierced into the “cable insertion hole 18” of the waterproof cap, a large number of first tears 25, 25. The free end portion 20b side of the valve body 20 is curved to allow the insertion of the cable 8, and thus the cable 8 is inserted using the watertight closing portion of the waterproof cap that can be used as the blind cap. As a waterproof cap for the “terminal portion 5”, there is an effect in use that can be utilized.

  Furthermore, the present invention can be understood from FIGS. 5 (F) and 6 when the cable 8 is connected to the “terminal portion 5” of the electronic device case 1 and the waterproof cap 10 is attached to the outer periphery 8f. Thus, around the “cable insertion hole 18”, a large number of valve bodies 20 projecting in a tapered shape from the hole edge 18 a toward the center of the hole are disposed with a slight gap 21 therebetween. In addition, each valve body 20 is elastically curved from the free end 20b side, and the inner surface 20d of the valve body 20 is in close contact with the outer peripheral surface 8f of the cable 8. Even if it is struck around the “cable insertion hole 18”, the presence of the numerous valve bodies 20 can reduce the rising force of rainwater due to the large resistance, and protect the “terminal portion 5” from rainwater. There is an effect that can be.

  Further, in the present invention, a large number of tapered valve bodies are arranged around the “cable insertion hole 18”, and the inner surface 20 d of the tip portion 20 b is in close contact with the outer peripheral surface 8 f of the cable 8. Even if it is designed to weaken the rising force of rainwater, there is a slight gap 21 between the valve bodies 20, so rainwater swept by strong wind is below the waterproof cap 10. Even if it is blown from the inside, the rain water that has entered the inside of the cylinder 11 bleeds out, and there is an effect that it is possible to prevent in advance the risk of harming the “terminal portion 5” of the electronic device case 1.

   Furthermore, in the present invention, the inner diameter dimension W2 of the cable insertion hole 18 provided in the lower end portion 16 of the cylindrical lower portion 12 may be a dimension corresponding to the outer dimension W4 of the cable 8, When a cable having a larger outer dimension than that of the cable 8 such as a connector is previously attached to the tip 8e of the cable 8, the larger one is pushed into the cable insertion hole 18 having a smaller dimension. As a result, the first slit 25 is opened, and the second slit 30 formed toward the peripheral wall 15 of the cylindrical lower portion 12 formed in a funnel shape from the outer peripheral side of the first slit 25 is elastically expanded. There is an effect in use that allows passage of a size larger than the small-sized cable insertion hole 18. In addition, in this case, the peripheral wall 15 of the cylindrical lower portion 12 formed in a funnel shape has elasticity, so that the second tear 30 is reduced, and there is no risk of greatly impairing the waterproof effect of the waterproof cap, and it is used as a convenient waterproof cap. There is an effect that can be done.

Schematic sectional view of the electronic device case in use It is a figure for demonstrating the external appearance and internal structure of a waterproof cap, (A) is the external view seen from the front, (B) is the BB sectional drawing of (A), (C) is the external view seen from the side. The figure, (D) is the DD sectional view taken on the line of (C). (A) is an expanded sectional view of the part shown by code | symbol IIIA of FIG. 2 (B), (B) is the IIIB-IIIB sectional view taken on the line of (A). FIG. 4A is an enlarged cross-sectional view of a portion indicated by reference numeral IVA in FIG. 2D, and FIG. 4B is an external view viewed from the direction of reference numeral IVB in FIG. FIG. 2 is a schematic diagram showing a partially broken view for explaining an embodiment in which the cable 8 is inserted into the waterproof cap 10, and the break position of the waterproof cap is the position along the line BB in FIG. In addition, the terminal part in the electronic device case, the cap mounting part, etc. are not shown. (A) is a schematic enlarged view seen from the VIA arrow direction of FIG. 5 (B), (B) is a schematic enlarged view seen from the VIB arrow direction of FIG. 5 (C), (C) is FIG. The outline external view for demonstrating the waterproof cap of the state of (), (D) is VI-VI sectional view taken on the line of (C). FIG. 2 is a schematic diagram showing a partially broken view for explaining an embodiment in which a cable with a connector attached to the tip is inserted into the waterproof cap, and the broken position of the waterproof cap is a line BB in FIG. position. In addition, the terminal part in the electronic device case, the cap mounting part, etc. are not shown.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an electronic device case 1, a terminal portion 5 connected to a circuit element (not shown) inside the electronic device case, a waterproof cap mounting portion 7, a cable 8 connected to the terminal portion 5, and the periphery of the cable 8. FIG. 2 is a schematic cross-sectional view for explaining the relation with the waterproof cap 10 arranged in a state of surrounding the waterproof cap 10, and FIG. 2 shows an external view and a cross-sectional view for explaining the external appearance and internal structure of the waterproof cap 10. 3 and 4 show an enlarged cross-sectional view and an external view of a portion for explaining the relationship between the peripheral wall 15 in the lower part of the cylindrical body 11 and the related members in the cable insertion portion 17. 5 and 6 are a cross-sectional view and an external view for explaining an embodiment in which the cable 8 is inserted into the waterproof cap 10. FIG. 7 is a cross-sectional view for explaining an embodiment in which the cable 8 having the connector 9 attached to the tip is inserted into the waterproof cap 10.

  As the electronic device case 1 shown in FIG. 1, electronic devices such as an antenna feeding unit and a booster used outdoors are typically known. In these electronic device cases 1, 2 represents a case body, 3 represents a lid, and 4 represents a base. 5 is a well-known terminal which controls the connection between the circuit elements inside the case and the cable, and is known to have a screw-on type or a configuration using a plug seat. Reference numeral 6 denotes a cable insertion hole, 7 denotes a known waterproof cap mounting portion, 7a denotes an inner cylinder, and 7b denotes an outer cylinder. In the figure, 8 is a known coaxial cable, 8a is a central conductor, 8b is an insulator, 8c is a jacket conductor, 8d is a jacket, and 8f is an outer peripheral surface. In addition, 5a shows the estimated position in the case of arrange | positioning a terminal part, 9 shows a known connector (plug) (refer FIG. 7).

In the waterproof cap 10 for an electronic device case that is well illustrated in FIG. 2, a watertight seal with respect to the waterproof cap mounting portion 7 in the electronic device case 1 is provided on an upper portion of a cylindrical body 11 formed in a hollow cylindrical shape. An opening 13 is provided to enable mounting. The inner diameter W1 of the opening 13 is dimensioned to be in close contact with the outer periphery of the inner cylinder 7a.
The inner diameter dimension W2 (for example, around 15.8 mm) of the intermediate part 11b of the cylindrical body 11 is set larger than the outer dimension (for example, around 12.5 mm) of the connector 9 so that the connector 9 attached to the tip of the cable 8 can pass through. It is. Reference numeral 14 denotes a hook piece made of an elastic material for preventing disengagement and forming a watertight state, and 14a denotes a tip portion.

  The peripheral wall 15 in the lower part 12 of the cylinder 11 is formed in a funnel shape as shown in FIGS. That is, the lower part is formed so that the diameter is gradually reduced. Further, the wall thickness T2 of the funnel-shaped peripheral wall 15 is formed so that the lower part is successively thinner as shown in FIGS. 3 and 4 than the wall thickness T1 (for example, around 1.5 mm) of the cylindrical intermediate part 11b. The closer to the lower end 16, the successive opening and closing of the second crevice 30 can be performed with a relatively light force.

At the lower end 16 of the peripheral wall 15 of the cylindrical lower portion 12, the outer dimension W4 of the cable 8 (for example, so as to enable the insertion of the cable 8 toward the cylindrical inner space 11a as shown in FIG. 3). A cable insertion portion 17 having a cable insertion hole 18 set to an inner diameter W3 (for example, around 5.4 mm) corresponding to 5 to 8 mm) is provided. Reference numeral 18a denotes a hole edge of the insertion hole 18 having expandable elasticity.

Around the cable insertion hole 18 of the cable insertion part 17 in the lower end part 16 of the cylindrical lower part 12, valve bodies 20 and 20 which project in a tapered shape from the hole edge 18a toward the center part 18b of the hole, respectively. ..Make 20 large numbers (for example, about 4 to 8 sheets) with a slight gap 21, 21, ... 21 (a gap that separates the valve bodies when the cable is inserted, for example, around 0.5 mm) Arranged.
As shown in FIG. 5C, each valve body 20 is bent from the free end portion 20b side so that the cable 8 can be inserted, as shown in FIG. 5C. In the same manner as in the case of the thin film body 22, it is integrally formed of an elastic material such as elastomer, vinyl chloride, EPM, polyethylene rubber, or silicon rubber, and each base portion 20a is integrated with the hole edge 18a. Yes.

Further, as shown in FIGS. 5B and 5C, the lower surfaces 20c of the numerous valve bodies 20, 20... 20 are connected to the end 8e of the cable 8 (the central conductor 8a, the insulator 8b, the outer The valve bodies 20, 20... 20 are connected to each other by a thin film body 22 so as to be separated from each other by being pressurized by the conductor 8 c and the outer cover 8 d) (thin film body 22 (for example, (Thickness: around 0.2 mm) is integrated with each lower surface 20c of the valve bodies 20, 20,... 20 and with the lower end portion 16 of the cylindrical lower portion 12). In such a configuration, the valve bodies 20, 20... 20 are normally closed in a water-tight manner so that the first tears 25, 25. It is.
The degree of separation of the plurality of valve bodies may be separated to the extent that the cable 8 can be inserted by elastically bending from the free end 20b side when the cable 8 is inserted.

Further, in the cylindrical lower part 12 formed in the funnel shape, as shown in FIGS. 3 (B) and 4 (B), each of the plurality of valve bodies 20, 20,. Of the many first slits 25, 25... 25 formed, one or more first slits 25, 25. The connector 9 attached to the tip 8e of the cable 8 is pressurized in a manner as shown in FIG. 7 toward the peripheral wall 15 at the bottom of the cylindrical body formed in a shape, that is, in the radial direction. Thus, a thin film body is formed so that a long slit in the vertical direction (vertical direction in FIG. 4A) with respect to the peripheral wall 15 at the bottom of the cylindrical body can be formed in a state of being continuous with the first crack 25 via the contact 32. 31 (for example, thickness: around 0.2 mm) is normally provided with a second tear 30 formed watertight.
In addition, the peripheral wall 15 of the cylindrical lower portion 12 is formed of a resilient material with a relatively thicker upper wall so that the second tear 30 can be expanded and contracted as described above. is there. In FIG. 4, the second tears 30 are arranged radially on both sides with the insertion hole 18 as the center. However, for example, the right second tears 30 may not be provided. In that case, the peripheral wall material of the insertion hole 18 and the second tear 30 may be made of a material having high elasticity so that the connector 9 can pass therethrough.

The usage method and usage state of the waterproof cap 10 having the above configuration will be described.
When the electronic device case 1 is used as a blind cap, for example, when it is mounted on the waterproof cap mounting portion 7 around the opened cable insertion hole 6 as shown on the right side of FIG. .
The normal waterproof cap 10 shown in FIG. 2 is mounted on the waterproof cap mounting portion 7 of the electronic device case 1 as is normally done.
In the mounted state shown in FIG. 1, the upper opening 13 in the waterproof cap 10 is mounted in a watertight manner on the outer peripheral surface of the inner cylinder 7a on the electronic device case side. Furthermore, since the cable insertion hole 18 in the cylindrical lower portion 12 of the waterproof cap 10 is closed in a watertight manner, the rainwater does not enter the electronic device case 1 even when the rainwater is blown by the wind.
Therefore, the waterproof cap 10 is used as a “blind cap” in the waterproof cap mounting portion 7 of the electronic device case 1 and can be used for waterproofing.

Next, the case where the cable 8 is connected to the terminal portion 5 of the electronic device case 1 and the waterproof cap 10 is attached to the outer periphery 8f is as follows.
First, as shown in FIG. 5A, the cable 8 is pushed from the bottom of the cable insertion hole 18 in the cylindrical lower portion 12 of the waterproof cap 10 toward the direction of the arrow 40. Then, as shown in FIGS. 5B and 6A, the central conductor 8a of the cable 8 is pierced into the thin film body 22 of the cable insertion hole 18. The cable 8 is continuously pushed in the direction of the arrow 40. Then, as shown in FIG. 5 (B), the thin film body 22 is pressed against the tip 8e (insulator 8b) of the cable 8, and the first slits 25, 25,. Each valve body begins to separate from each other in a radial manner from the central portion 18b, and the free end 20b side of each valve body 20 is elastically curved as shown in FIGS. 5 (C) and 6 (B). The insulator 8b of the cable 8 is allowed to travel. When the cable 8 is further pushed in the direction of the arrow 40, the pressure is applied by the insulator 8b and the outer conductor 8c, the first slit 25 is further broken, and the valve bodies are separated to the vicinity of the base portion 20a. The free end portion 20b side of the cable 8 is elastically curved to allow the insulator 8b and the outer conductor 8c to advance into the cylindrical body 11a. Further, as shown in FIG. 5D, the end of the cable 8 (insulator 8b, jacket conductor 8c and jacket 8d) are allowed to pass through. Subsequently, as shown in FIG. 5E, the insertion of the cable 8 is advanced in the direction of the arrow 40 to penetrate the cylindrical body 11, and the cable 8 is further extended from the opening 13 until a length for which the cable 8 can be easily connected is projected. Is inserted.

Next, the cable 8 is connected to the terminal portion 5 in the electronic device case as usual.
Next, the waterproof cap 10 is attached to the electronic device case as follows.
First, the waterproof cap 10 is moved up along the cable 8 toward the case body 1 (in the direction of arrow 43 in FIG. 5E).
At this time, in the valve body 20 in the state shown in FIG. 5E, when the cylinder body 11 moves in the direction of the arrow 43, the free end 20b of the valve body 20 remains elastically pressed against the outer peripheral surface 8f of the cable 8. The base portion 20a moves in the direction of arrow 43. Further, when the cylinder 11 moves in the direction of the arrow 43, the valve body 20 is elastically deformed to the state shown in FIGS. 5 (F), 6 (C) and 6 (D). The inner surface 20d of each valve body is brought into close contact with the outer peripheral surface 8f of the cable in an elastic manner.

Next, the upper opening 13 of the waterproof cap 10 is put on the outer peripheral surface of the inner cylinder 7a on the electronic device case side, and the waterproof cap 10 is inserted to the position shown in FIG. Put on. The opening 13 in the cylinder 11 is watertightly attached to the waterproof cap attaching part 7 of the electronic device case 1.
In the state where the waterproof cap 10 is mounted in this manner, as shown in FIGS. 5 (F), 6 (C) and 6 (D), the cable lower hole 12 of the waterproof cap 10 has the cable insertion hole 18 in the state. The numerous inner surfaces 20d of the valve bodies 20 are in close contact with the outer peripheral surface 8f of the cable 8, and even if rainwater is struck around the cable insertion hole 18 by strong wind, the numerous valve bodies 20, 20 ... By the presence of 20, it is possible to weaken the rising force of rainwater due to great resistance, and to protect the terminal part 5 in the electronic device case from rainwater.

  Further, in the mounted state, as shown in FIGS. 6C and 6D, there are slight gaps 21 between the many valve bodies 20. Therefore, even when rainwater blown by strong wind blows from the bottom of the waterproof cap 10, rainwater that has entered the inside of the cylindrical body 11 oozes out and may harm the “terminal portion 5” of the electronic device case 1. Can be prevented in advance.

Next, the case where the connector 9 is attached to the tip of the cable 8 is as follows.
First, as shown in FIG. 7A, the cable 8 is advanced from the bottom of the cable insertion hole 18 of the waterproof cap 10 in the direction of the arrow 40. Then, the central conductor 8a of the cable 8 is pierced into the thin film body 22 of the cable insertion hole 18.
When the cable 8 is continuously pushed in the direction of the arrow 40, as shown in FIGS. 7B and 7C, the peripheral wall 15 and the thin film body 22 of the cable insertion hole 18 in the lower part 12 of the cylinder are attached to the tip of the cable 8. The connector 9 is pressurized. Then, the first slits 25, 25,... 25 of the cable insertion hole 18 are torn apart radially from the center, and the thin film body 31 of the second slit 30 is torn and is continuous with the first slit 25. A second tear 30 is created. And the said 2nd crevice 30 expands elastically (it opens so that a gusset may open a mouth with a puff), and the advance of the connector 9 of an outer diameter larger than the hole 18 for cable insertion is accept | permitted.
When the insertion of the cable 8 continues in the direction of the arrow 40 and the connector 9 passes through the cable insertion portion 17 and enters the cylindrical body 11a, the elastically expanded second tear 30 is shown in FIG. As shown, it is elastically reduced, and the free end 20b side of the numerous valve bodies 20 of the cable insertion hole 18 is elastically bent and abuts against the outer peripheral surface 8f of the cable 8 to allow the insertion of the cable 8.
Subsequently, the insertion of the cable 8 is advanced in the direction of the arrow 40 to penetrate the cylindrical body 11, and the cable 8 is further inserted until a length that allows easy connection work of the cable 8 protrudes from the opening 13.

Next, a wire connection operation is performed on the terminal portion in the electronic device case as is normally performed using the connector 9 attached to the tip of the cable 8.
Next, based on the same idea as described with reference to FIGS. 5 and 6 above, the waterproof cap 10 is shifted along the cable 8 toward the case body 1 (in the direction of arrow 43 in FIG. It is watertightly attached to the waterproof cap attaching part 7 of the case.
In the process of mounting, the cable insertion hole 18 of the waterproof cap 10 in the state of FIG. 7D is associated with the movement of the waterproof cap 10 toward the case body 1 (in the direction of arrow 43 in FIG. 7D). In the same manner as described with reference to FIG. 5, the base portion 20a moves in the direction of the arrow 43 while the free end 20b of the valve body 20 elastically presses the outer peripheral surface 8f of the cable 8 and moves in the direction of the arrow 43, as shown in FIG. E) Elastically deforms to the state shown in FIGS. 6 (C) and 6 (D). The inner surfaces 20d of the numerous valve bodies 20 are brought into close contact with each other by elastically pressing the cable outer peripheral surface 8a.

  In a state where the waterproof cap 10 is mounted on the waterproof cap mounting portion 7 of the electronic device case, the second slit 30 of the cylindrical lower portion 12 of the waterproof cap 10 is elastically reduced and is disposed in the cable insertion hole 18. Even if a large number of the inner surfaces 20d of the valve bodies 20 are in close contact with the outer peripheral surface 8f of the cable 8 and rainwater is struck around the cable insertion hole 18 by strong wind, the presence of the large number of valve bodies 20 Due to the large resistance, the rising force of rainwater can be weakened, and the terminal portion 5 in the electronic device case can be protected from rainwater.

DESCRIPTION OF SYMBOLS 1 ... Electronic device case, 2 ... Case main body, 5 ... Terminal part, 6 ... Cable insertion hole, 7 ... Waterproof cap mounting part, 7a ... Inner cylinder, 7b ... Outer cylinder, 8 ... Coaxial cable, 8a ... Center conductor, 8b ... Insulator, 8c ... Outer conductor, 8d ... Outer jacket, 8e ... Tip, 8f ... Outer circumference Surface, 9 ... Connector (connector), 10 ... Waterproof cap for electronic device case, 11 ... Cylinder, 11b ... Intermediate, 11a ... Internal space of cylinder, 12 ... Lower , 13 ... opening, 14 ... flange, 14a ... tip, 15 ... lower peripheral wall (funnel shape), 16 ... lower end, 17 ... cable insertion part, 18 ... Cable insertion hole, 18a ... Hole edge, 20 ... Valve body, 20a ... Base part, 20b ... Free end part, 20c ... Lower face, 20d ... Inner face Tangent surface , 21 ... gap, 22 ... thin film material, 25 ... first crevice, 30 ... second crevices, 31 ... thin film member

Claims (2)

The upper part of the cylindrical body formed in a hollow cylindrical shape is provided with an opening that enables watertight mounting to the waterproof cap mounting part in the electronic device case,
The lower part of the cylinder is formed into a funnel-shaped narrow diameter,
Waterproof cap for electronic device case provided with a cable insertion part having a cable insertion hole with an inner diameter corresponding to the outer dimension of the cable at the lower end of the lower part of the cylinder so that the cable can be inserted toward the inside of the cylinder In
Around the cable insertion hole of the cable insertion portion at the lower end portion of the lower part of the cylindrical body, a large number of tapered valve bodies projecting from the hole edge toward the center of the hole are provided with a slight gap between them. Arranged,
And each said valve body is formed from the elastic material which curves from the free end side at the time of cable insertion, and enables insertion of a cable,
Further, the lower surfaces of the plurality of valve bodies are connected to each other by thin film bodies so that the valve bodies are separated from each other by being pressurized at the tip of the cable, and the first slits are respectively formed between the plurality of valve bodies. A waterproof cap for an electronic device case, characterized in that the valve bodies are normally sealed in a watertight manner. The upper part of the cylindrical body formed in a hollow cylindrical shape is provided with an opening that enables watertight mounting to the waterproof cap mounting part in the electronic device case,
The lower part of the cylinder is formed into a funnel-shaped narrow diameter,
Waterproof cap for electronic device case provided with a cable insertion part having a cable insertion hole with an inner diameter corresponding to the outer dimension of the cable at the lower end of the lower part of the cylinder so that the cable can be inserted toward the inside of the cylinder In
Around the cable insertion hole of the cable insertion portion at the lower end portion of the lower part of the cylindrical body, a large number of tapered valve bodies projecting from the hole edge toward the center of the hole are provided with a slight gap between them. Arranged,
And each said valve body is formed from the elastic material which curves from the free end side at the time of cable insertion, and enables insertion of a cable,
Furthermore, the lower surfaces of the multiple valve bodies are connected to each other with thin film bodies so that the valve bodies are separated from each other by being pressurized at the tip of the cable,
It is formed so that a first tear can be made between a large number of valve bodies, and the valve bodies are normally closed in a watertight manner,
Furthermore, in the lower part of the cylindrical body formed in the funnel shape, among the multiple first rifts formed between the multiple valve bodies, the outer periphery side of one or two first ruptures described above. Towards the peripheral wall at the bottom of the cylinder that is formed in a funnel shape,
A thin film body is normally formed watertight so that a long slit in the vertical direction is continuous with the first crack by applying pressure with a connector attached to the tip of the cable. One or more of the second tears made,
Moreover, the waterproof cap for an electronic device case is characterized in that the peripheral wall at the lower part of the cylindrical body is formed of an elastic material so that the second tear can be expanded and contracted.

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