TWI667176B - Waterproof circuit box - Google Patents

Abstract

A waterproof electrical box is used to solve the problems of poor assembly convenience and poor waterproof effect of the current electrical box. The waterproof electrical box of the present invention comprises: a box body; a circuit unit provided in the box body; a waterproof glue filled in the box body; and a cover body formed with a pressing ring at one end of the cover body, The cover is combined with the box, and the pressing ring is pressed against the waterproof glue.

Description

Waterproof electrical box

The invention relates to an electrical box, especially a waterproof electrical box.

Press, the conventional waterproof electrical box is provided with a leak-proof ring (such as O-ring) between the box body and the cover body. When assembling, the leak-proof ring needs to be fitted to the box body or the The joint portion of the cover body, and then the box body and the cover body are relatively combined, so that the leakage prevention ring is clamped and deformed to fill a joint gap between the box body and the cover body, so as to prevent water from passing through the box body. A joint gap with the cover body penetrates into the inside of the waterproof electrical box.

Therefore, the assembly procedure of the conventional waterproof electrical box is not convenient and it is difficult to improve the assembly efficiency. Furthermore, even if the leak-proof ring is provided, once it is assembled, the leak-proof ring does not actually fill the joint gap between the box body and the cover body, or the leak-proof ring is deteriorated and cracked after a period of use. Damage, water or gas may still penetrate the inside of the waterproof electrical box, causing the circuit unit located inside the conventional waterproof electrical box to get wet and short-circuit or damage.

In view of this, the conventional waterproof electrical box does still need to be improved.

In order to solve the above problems, the present invention provides a waterproof electrical box, which has a very convenient assembly procedure, which can quickly assemble and ensure a good waterproof effect.

The directionality of the present invention described below or its approximate terms, such as "upper (top)", "lower (bottom)", "inside", "outside", "side", etc., are mainly referred to the directions of the attached drawings. The directional or similar terms are only used to help explain and understand the embodiments of the present invention, not to limit the present invention. Bright.

The waterproof electrical box of the present invention comprises: a box body; a circuit unit provided in the box body; a waterproof glue which is poured and solidified in the box body; and a cover body, the cover One end of the body is formed with a pressing ring, the cover is combined with the box body, and the pressing ring is tightly pressed against the waterproof glue. The circuit unit has several electronic components combined with a circuit board, the circuit board and the several The electronic components are all covered by the waterproof glue.

According to this, the waterproof electrical box of the present invention, as long as the box body and the cover body are directly locked and bonded, the pressing ring of the cover body can press the waterproof glue in the box body tightly, and ensure that liquid cannot penetrate into the box body. The space between the pressing ring and the waterproof glue makes the assembly process of the waterproof electrical box very convenient, which can effectively improve the assembly efficiency and ensure the good waterproof effect, and has the effects of reducing the failure rate of the waterproof electrical box.

Wherein, the circuit unit has an external connection to the circuit board, and the external connection to the circuit board is covered in the waterproof glue. In this way, the waterproof adhesive can protect the external wiring from being easily broken and disconnected at the circuit board, and has the effects of improving the convenience of operation during wiring and reducing the failure rate of the waterproof electrical box.

The waterproof electrical box of the present invention comprises: a box body; a circuit unit provided in the box body; a waterproof glue which is poured and solidified in the box body; and a cover body, the cover One end of the body is formed with a pressing ring, the cover is combined with the box body, and the pressing ring is tightly pressed against the waterproof glue. The box body has a bottom plate connected to a ring wall, and the box body has an inner retaining wall. In the space surrounded by the ring wall, the circuit unit has an external connection to connect a circuit board, the circuit board is positioned in the space surrounded by the inner retaining wall, and the waterproof glue fills the ring wall and the inner retaining wall. Between the walls, the outer wiring runs through the inner retaining wall. In this way, it has the effects of saving the amount of waterproof glue and reducing costs.

The waterproof electrical box of the present invention comprises: a box body; a circuit unit disposed in the box body; a waterproof glue which is poured into and solidified in the box body; and a cover Body, one end of the cover body is formed with a pressing ring, the cover body is combined with the box body, and the pressing ring is tightly pressed against the waterproof glue, the circuit unit has an external wiring connected to a circuit board, and a part of the external wiring Covered with this waterproof glue. In this way, it has the effects of reducing the failure rate of the waterproof electrical box.

The waterproof electrical box of the present invention comprises: a box body; a circuit unit provided in the box body; a waterproof glue which is poured and solidified in the box body; and a cover body, the cover One end of the body is formed with a pressing ring, the cover is combined with the box body, and the pressing ring is tightly pressed against the waterproof glue. The box body has a bottom plate connected to a ring wall, and the ring wall surrounds an opening and the bottom plate. In contrast, the ring wall is provided with a wire hole adjacent to the opening; the circuit unit has an external wiring connection to a circuit board, the circuit board is positioned in the box body, and the external wiring passes out of the box body through the wire hole. . In this way, it has the effects of improving the convenience of operation when assembling the box body and the cover body.

A wire groove is formed on the outer peripheral surface of the pressing ring, and the wire groove is not connected to the inner peripheral surface of the pressing ring. The external wiring runs through the wire groove and then passes out of the box through the wire hole. In this way, the liquid does not penetrate into the inside of the pressing ring in order to pull out the external wiring, and has the effects of maintaining a good waterproof effect.

The wire hole is preferably opposite to the wire groove of the pressing ring. In this way, it has the effects of improving the smoothness of the cable and avoiding damage to the external wiring by excessive bending or compression.

The wire hole extends to the opening. In this way, it has the effects of improving the convenience of operation when pulling the wire.

Wherein, the box body is provided with a plurality of first locking portions, each of the first locking portions is connected to an inner wall of the box body, and each of the first locking portions is provided with a through hole to communicate the inside and the outside of the box body. In this way, damage to the waterproof glue caused by the locking element can be avoided.

Wherein, the cover is provided with a plurality of second locking portions and the plurality of first locking portions are relatively locked and combined, and the plurality of second locking portions are provided on the outer periphery of the pressing ring. In this way, the locking element will not affect the structure of the pressing ring, so that the pressing ring can maintain a tight pressing waterproof glue, and has the effects of maintaining a good waterproof effect.

The waterproof electrical box of the present invention comprises: a box body; a circuit unit provided in the box body; a waterproof glue which is poured and solidified in the box body; and a cover body, the cover One end of the body is formed with a pressing ring, the cover is combined with the box body, and the pressing ring is pressed against the waterproof glue. The box body is provided with a plurality of first locking portions, each of the first locking portions is connected to An inner wall of the box body, each of the first locking portions is provided with a through hole to communicate the inside and the outside of the box body, the box body has a bottom plate connected to a ring wall, and an opening is formed around the ring wall to oppose the bottom plate, The ring wall is provided with a wire hole adjacent to the opening; the circuit unit has an external wiring connected to a circuit board, the circuit board is positioned in the box body, and the external wiring passes out of the box body through the wire hole, the The height of the waterproof glue is preferably not higher than the top of the line hole and the through hole of each of the first locking portions. In this way, it is not necessary to set other clamps to restrict the flow range of the waterproof glue when pouring the waterproof glue, and has the effects of improving manufacturing convenience and efficiency.

The waterproof electrical box of the present invention comprises: a box body; a circuit unit provided in the box body; a waterproof glue which is poured and solidified in the box body; and a cover body, the cover A pressing ring is formed at one end of the body, the cover is combined with the box body, and the pressing ring is pressed against the waterproof glue. The circuit unit has a connector for electrically connecting a circuit board, and the connector of the circuit unit is not waterproofed. Covered with glue, the cover is provided with another connector in the inner space surrounded by the pressing ring, and the connector of the cover is connected with the connector of the circuit unit. In this way, it has effects such as improving the convenience of assembly.

Wherein, the cover is provided with a joint for connecting the wire to the cover, the pressing ring is provided with a perforation, and a sealing plug is combined with the perforation and the wire is penetrated. In this way, one end of the wire passing through the pressing ring can be connected with the device to be driven which the waterproof electrical box wants to be electrically connected, and has the effects of improving the convenience of assembly and maintaining a good waterproof effect.

The waterproof adhesive is polyurethane or silicone. In this way, it has effects such as improving the waterproof effect on the circuit unit.

Wherein, the cover is made of a ball-shaped molding compound. In this way, it has improved waterproof electrical Box quality and other effects.

Wherein, the box body is made of ball-shaped molding material. In this way, it has the effects of improving the quality of the waterproof electrical box.

1‧‧‧ box

1a‧‧‧ floor

1b‧‧‧ Ring wall

1c‧‧‧Inner Retaining Wall

11‧‧‧ opening

12‧‧‧ wire hole

13‧‧‧First Locking Department

131‧‧‧through hole

2‧‧‧Circuit Unit

21‧‧‧Circuit Board

22‧‧‧Electronic components

23‧‧‧External wiring

24‧‧‧ connector

3‧‧‧ Waterproof Adhesive

4‧‧‧ cover

41‧‧‧Press ring

411‧‧‧Wire trunking

412‧‧‧perforation

42‧‧‧Second locking section

43‧‧‧ connector

44‧‧‧ Lead

45‧‧‧Sealing plug

5‧‧‧Motor housing

51‧‧‧coil set

511‧‧‧ connector

52‧‧‧Core Set

53‧‧‧shell

531‧‧‧ pressure ring

532‧‧‧Second locking section

533‧‧‧rotor slot

534‧‧‧Shaft joint

6‧‧‧ rotor

61‧‧‧Shaft

62‧‧‧magnetic parts

S‧‧‧Locking element

FIG. 1 is an exploded perspective structural view of a first embodiment of the present invention.

FIG. 2 is an anatomical view of the first embodiment of the present invention.

Fig. 3: A sectional structural view of a first embodiment of the present invention.

FIG. 4 is a combined sectional structural diagram of a second embodiment of the present invention.

FIG. 5 is a combined sectional structural diagram of a third embodiment of the present invention.

FIG. 6 is a combined sectional structural diagram of a fourth embodiment of the present invention.

In order to make the above and other objects, features, and advantages of the present invention more comprehensible, the following describes the preferred embodiments of the present invention in detail with the accompanying drawings as follows: Please refer to FIGS. 1 and 2. It is the first embodiment of the waterproof electrical box of the present invention. The waterproof electrical box generally includes a box body 1, a circuit unit 2, a waterproof glue 3, and a cover 4. The circuit unit 2 and the waterproof glue 3 are provided. In the box body 1, the cover body 4 is combined with the box body 1.

The box body 1 has a bottom plate 1a and a ring wall 1b. One end of the ring wall 1b is connected to the bottom plate 1a, and the other end of the ring wall 1b forms an opening 11 opposite to the bottom plate 1a. In this embodiment, the ring wall 1 b is provided with a wire hole 12 adjacent to the opening 11, and the wire hole 12 preferably extends to the opening 11 to improve the operation convenience when pulling the wire. The box body 1 may further be provided with a plurality of first locking portions 13, each of the first locking portions 13 may be connected to an inner wall of the annular wall 1 b, and each of the first locking portions 13 is provided with a through hole 131 for communication The inside and outside of the box body 1. In addition, the material of the box body 1 is not limited, and a thermosetting plastic material is preferably used. The thermosetting plastic may be epoxy resin, or a thermosetting plastic suitable for injection molding, such as a bulk molding compound (Bulk Molding) Compound, BMC), and the BMC material has the characteristics of light weight, high strength, excellent temperature and humidity resistance, low shrinkage, and zero-degree drafting, which can improve the molding yield and efficiency of the box body 1.

The circuit unit 2 may include a circuit board 21, several electronic components 22, an external connection 23, and a connector 24. The several electronic components 22 are combined with the circuit board 21, and the external connection 23 and the connector 24 are respectively connected with the circuit board 21. This circuit board 21 is electrically connected. The circuit board 21 is positioned at a predetermined position in the box body 1, and the external wiring 23 passes out of the box body 1 through the wire hole 12 so as to connect an external power source.

The waterproof glue 3 can be made of, for example, polyurethane (PU) or silicon rubber. The waterproof glue 3 is filled in the box body 1. The height of the waterproof glue 3 is not higher than the line hole 12 and each of the first locks. The top of the through hole 131 of the fixed portion 13 is not necessary to set other clamps to limit the flow range of the waterproof glue 3 when pouring the waterproof glue 3, which can improve manufacturing convenience and efficiency. After the waterproof glue 3 of this embodiment is solidified, it can cover at least the non-insulated part of the circuit unit 2, so even if water or water penetrates into the waterproof electrical box, it is not easy to cause the circuit unit 2 to be short-circuited or damaged; for example, The waterproof glue 3 can cover the circuit board 21, the plurality of electronic components 22 and the external wiring 23 near the circuit board 21, and the joint 24 is not covered by the waterproof glue 3. Wherein, the place where the external wiring 23 is connected to the circuit board 21 is covered in the waterproof glue 3, so that the place where the external wiring 23 is connected to the circuit board 21 is not easily broken off by the waterproof glue 3.

Please refer to FIGS. 1 and 3. A pressing ring 41 is formed at one end of the cover body 4. The cover body 4 is combined with the box body 1 to press the waterproof rubber 3 tightly by the pressing ring 41 to effectively prevent liquid. The internal space surrounded by the pressing ring 41 is penetrated from the outside. Wherein, the cover 4 may be provided with a plurality of second locking portions 42 to be relatively locked and combined with the plurality of first locking portions 13. In this embodiment, each of the second locking portions 42 may be, for example, one A screw hole is passed through a through hole 131 of the first locking portion 13 by a locking element S and is locked and coupled to the corresponding second locking portion 42, so as to ensure that the cover body 4 is firmly coupled to the box body 1.

It should be noted that, in this embodiment, the plurality of second locking portions 42 may be optionally provided. On the outer periphery of the pressing ring 41; in this way, when the locking element S is worn, the locking element S will not only cause damage to the waterproof glue 3, nor will it affect the structure of the pressing ring 41, so the The pressing ring 41 can maintain a state of tightly pressing the waterproof glue 3 to maintain a good waterproof effect.

On the other hand, a wire groove 411 may be formed on the outer peripheral surface of the pressing ring 41, and the wire groove 411 is not connected to the inner peripheral surface of the pressing ring 41. When assembling, the wire groove 411 and the wire hole 12 are preferably formed. In contrast, allowing the external wiring 23 to extend through the wire groove 411 and out of the wiring hole 12 can improve the smoothness of the cable and prevent the external wiring 23 from being excessively bent or pressed, so that the external wiring 23 Less vulnerable to damage.

In addition, the cover 4 is further provided with a connector 43. The connector 43 is located in the inner space surrounded by the pressing ring 41, and is used to connect with the connector 24 of the circuit unit 2. In this embodiment, the cover body 4 is provided with a conducting wire 44 to connect to the joint 43, the pressing ring 41 is provided with a perforation 412, and a sealing plug 45 is coupled to the perforation 412, and the sealing plug 45 may allow the conducting wire 44 to penetrate and There will be no liquid leakage from the penetration; accordingly, one end of the wire 44 that penetrates the pressing ring 41 can be connected with the device to be driven that the waterproof electrical box wants to be electrically connected. The material of the cover 4 is not limited, and a thermosetting plastic material is preferably selected. The thermosetting plastic may be an epoxy resin, or a thermosetting plastic suitable for injection molding, such as a bulk molding compound (BMC). In order to improve the forming yield and efficiency of the cover body 4.

According to the foregoing structure, when assembling the waterproof electrical box of the present invention, as long as the connector 43 of the cover body 4 is connected to the connector 24 of the circuit unit 2, then the cover body 4 and the box body 1 are connected by the number of The second locking portion 42 is locked with the first locking portions 13 so that the pressing ring 41 of the cover 4 passes through the opening 11 of the box 1 to press the waterproof glue 3 tightly. It is ensured that liquid cannot penetrate into the space between the pressing ring 41 and the waterproof glue 3, so the joint 43 and the joint 24 can be kept in a dry environment. In other words, when assembling the waterproof electrical box of the present invention, there is no need to additionally provide a leakproof ring between the box body and the cover body as in the conventional waterproof electrical box, so the assembly procedure of the present invention is very convenient and can effectively improve the assembly efficiency.

Please refer to FIG. 4, which is a second embodiment of the waterproof electrical box of the present invention. The second embodiment of the present invention is substantially the same as the first embodiment described above. The main difference is that the second embodiment of the present invention is applied to Since the motor is waterproof, the cover 4 is directly replaced by a motor housing 5 (shown in FIG. 3).

In detail, the motor case base 5 includes a coil group 51 wound around an iron core group 52, and another case 53 covers the coil group 51 and the iron core group 52. The case 53 is preferably a ball shape Molding compound (Bulk Molding Compound, BMC) material to improve the molding yield and efficiency of the casing 53. A pressing ring 531 is formed at one end of the casing 53, and the casing 53 may be provided with a plurality of second locking portions 532 to be relatively locked and combined with the plurality of first locking portions 13 of the box body 1. The pressing ring 531 of the casing 53 passes through the opening 11 of the box body 1 to press against the waterproof glue 3 to ensure that liquid cannot penetrate into the space between the pressing ring 531 and the waterproof glue 3.

Wherein, the coil group 51 may have a connector 511 exposed outside the casing 53 and located in an inner space surrounded by the pressing ring 531 for connecting with the connector 24 of the circuit unit 2. In addition, a rotor slot 533 may be formed in the center of the casing 53, and the casing 53 further has a shaft connection portion 534 located in the rotor slot 533; accordingly, the waterproof motor has a rotor 6 rotatably provided by a rotating shaft 61. At the shaft connection portion 534, a magnetic piece 62 disposed on the outer periphery of the rotating shaft 61 can be located in the rotor slot 533 and opposed to the core group 52, so that the circuit unit 2 is energized to generate a magnetic field in the coil group 51. Then, the rotor 6 is driven to rotate.

Please refer to FIG. 5, which is a third embodiment of the waterproof electrical box of the present invention. The third embodiment of the present invention is substantially the same as the first embodiment described above, and the main difference lies in the location of the waterproof glue filling.

In detail, the box body 1 of this embodiment further has an inner retaining wall 1c. The inner retaining wall 1c is disposed in a space surrounded by the ring wall 1b. The circuit board 21 is positioned in a circle surrounded by the inner retaining wall 1c. In the enclosed space, the waterproof glue 3 is filled between the ring wall 1b and the inner retaining wall 1c, which can achieve the effect of saving the amount of the waterproof glue 3 and reducing the cost. Wherein, the outer wiring 23 runs through the inner retaining wall 1c, so that a part of the external wiring 23 can be covered by the waterproof adhesive 3, so the waterproof adhesive 3 can provide a good positioning effect on the external wiring 23, even if the part of the external wiring 23 that penetrates the box body 1 is It is not easy to affect the place where the external wiring 23 is connected to the circuit board 21 by pulling, which can reduce the failure rate of the waterproof electrical box.

In addition, in the above structure of this embodiment, after the cover body 4 is coupled to the box body 1, the pressing ring 41 is pressed against the waterproof glue 3, thereby effectively preventing liquid from seeping into the pressing ring from the outside. The inner space surrounded by 41.

Please refer to FIG. 6. In the fourth embodiment of the waterproof electrical box of the present invention, the position of connecting the bottom plate 1a to the ring wall 1b and the inner retaining wall 1c can be increased, which can further save the amount of the waterproof glue 3. To reduce cost.

In summary, the waterproof electrical box of the present invention, as long as the box body and the cover body are directly locked and combined, the pressing ring of the cover body can be pressed against the waterproof glue in the box body, and the liquid cannot be prevented. It penetrates into the space between the pressing ring and the waterproof glue, so the assembly procedure of the waterproof electrical box is very convenient, which can effectively improve the assembly efficiency and ensure a good waterproof effect.

Although the present invention has been disclosed using the above-mentioned preferred embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make various changes and modifications to the above embodiments without departing from the spirit and scope of the present invention. The technical scope protected by the invention, so the scope of protection of the present invention shall be determined by the scope of the appended patent application.

Claims (16)

A waterproof electrical box includes: a box body; a circuit unit disposed in the box body; a waterproof glue that is poured and solidified in the box body; and a cover body of the cover body A pressing ring is formed at one end, the cover is combined with the box body, and the pressing ring is tightly pressed against the waterproof glue. The circuit unit has several electronic components combined with a circuit board, the circuit board and the several electronic components. All are covered by the waterproof glue. The waterproof electrical box according to item 1 of the scope of patent application, wherein the circuit unit has an external connection to the circuit board, and the external connection to the circuit board is covered in the waterproof glue. A waterproof electrical box includes: a box body; a circuit unit disposed in the box body; a waterproof glue that is poured and solidified in the box body; and a cover body of the cover body A pressing ring is formed at one end, the cover is combined with the box body, and the pressing ring is tightly pressed against the waterproof glue. The box body has a bottom plate connected to a ring wall, and the box body also has an inner retaining wall provided on the ring. In the space surrounded by the wall, the circuit unit has an external connection to connect a circuit board, the circuit board is positioned in the space surrounded by the inner retaining wall, and the waterproof glue fills the space between the annular wall and the inner retaining wall. In the meantime, the outer wiring runs through the inner retaining wall. A waterproof electrical box includes: a box body; a circuit unit disposed in the box body; a waterproof glue that is poured and solidified in the box body; and a cover body of the cover body A pressing ring is formed at one end, the cover is combined with the box body, and the pressing ring is pressed against the waterproof glue. The circuit unit has an external wiring connected to a circuit board, and a part of the external wiring is covered with the waterproof glue. . A waterproof electrical box includes: a box body; a circuit unit disposed in the box body; a waterproof glue that is poured and solidified in the box body; and a cover body of the cover body A pressing ring is formed at one end, the cover is combined with the box body, and the pressing ring is pressed against the waterproof glue. The box body has a bottom plate connected to a ring wall, and an opening is formed around the ring wall to oppose the bottom plate. The ring wall is provided with a wire hole adjacent to the opening; the circuit unit has an external wiring connected to a circuit board, the circuit board is positioned in the box body, and the external wiring passes out of the box body through the wire hole. The waterproof electrical box according to item 5 of the scope of patent application, wherein the outer circumferential surface of the pressing ring forms a wire groove, the wire groove is not connected to the inner circumferential surface of the pressing ring, and the external wiring runs through the wire groove. , And then pass out of the box through the wire hole. The waterproof electrical box according to item 6 of the scope of patent application, wherein the wire hole is opposite to the wire groove of the pressing ring. The waterproof electrical box according to item 7 of the scope of patent application, wherein the wire hole extends to the opening. The waterproof electrical box according to item 1 of the scope of patent application, wherein the box body is provided with a plurality of first locking portions, each of the first locking portions is connected to an inner wall of the box body, and each of the first locking portions The part is provided with a through hole to communicate the inside and the outside of the box body. The waterproof electrical box according to item 9 of the scope of patent application, wherein the cover is provided with a plurality of second locking portions and the plurality of first locking portions are relatively locked and combined, and the plurality of second locking portions are provided On the periphery of the ring. A waterproof electrical box includes: a box body; a circuit unit disposed in the box body; a waterproof glue that is poured and solidified in the box body; and a cover body of the cover body A pressing ring is formed at one end, the cover is combined with the box body, and the pressing ring is pressed against the waterproof glue. The box body is provided with a plurality of first locking portions, and each of the first locking portions is connected to the box. An inner wall of the body, each of the first locking portions is provided with a through hole to communicate the inside and the outside of the box body, the box body has a bottom plate connected to a ring wall, and the ring wall surrounds an opening opposite the bottom plate, the ring The wall is provided with a wire hole adjacent to the opening; the circuit unit has an external wiring connected to a circuit board, the circuit board is positioned in the box body, the external wiring passes out of the box body through the wire hole, and the waterproof glue The height is not higher than the top of the wire hole and the through hole of each of the first locking portions. A waterproof electrical box includes: a box body; a circuit unit disposed in the box body; a waterproof glue that is poured and solidified in the box body; and a cover body of the cover body A pressing ring is formed at one end, the cover is combined with the box body, and the pressing ring is pressed against the waterproof glue. The circuit unit has a connector for electrically connecting a circuit board. The connector of the circuit unit is not covered by the waterproof glue. The cover is provided with another connector in the inner space surrounded by the pressing ring, and the connector of the cover is connected with the connector of the circuit unit. The waterproof electrical box according to item 12 of the scope of patent application, wherein the cover is provided with a connector for connecting the lead to the cover, the pressing ring is provided with a perforation, and a sealing plug is coupled to the perforation and the lead is penetrated. The waterproof electrical box according to item 1 of the scope of patent application, wherein the waterproof glue is polyurethane or silicone. The waterproof electrical box according to item 1 of the scope of patent application, wherein the cover body is made of a ball-shaped molding material. The waterproof electrical box according to item 1 of the scope of patent application, wherein the box body is made of a ball-shaped molding material.