CN117255516B

CN117255516B - LED driving power supply sealing structure and sealing method

Info

Publication number: CN117255516B
Application number: CN202311534287.1A
Authority: CN
Inventors: 沈长松; 陈国荣; 赵德利; 温宁宁; 谭显才
Original assignee: Shenzhen Cec Panda Zhansheng Technology Co ltd
Current assignee: Shenzhen Cec Panda Zhansheng Technology Co ltd
Priority date: 2023-11-17
Filing date: 2023-11-17
Publication date: 2024-02-09
Anticipated expiration: 2043-11-17
Also published as: CN117255516A

Abstract

The invention relates to a sealing structure and a sealing method of an LED driving power supply, wherein the structure comprises a bottom shell and a face cover, a square frame is arranged on the face cover, an annular step is arranged at the upper end of the outer side surface of the square frame, a first wire passing groove is arranged at the lower end of the square frame, and a first sealing ring is sleeved on the annular step; the upper end of the square frame is provided with an extrusion frame and a groove, the groove is communicated with the annular step, the lower end of the groove is provided with a slot correspondingly communicated with the accommodating groove, the outer side surface of the extrusion frame is provided with an extrusion convex ring, the lower end of the extrusion frame is provided with two sheet-shaped supporting legs, the sheet-shaped supporting legs are provided with a second wire passing groove, a circular ring-shaped buckle and an elastic piece, the lower end of the circular ring-shaped buckle is provided with an opening for a connecting wire to pass through, the opening is connected with an arc section through a rotating shaft, and the rotating shaft is sleeved with a torsion spring for resetting the arc section; the assembly and disassembly are very convenient, the installation process is simplified, and simultaneously, the sealing mode from inside to outside is adopted at the junction of the bottom shell and the face cover and at the junction of the connecting wire outlet, so that the integrity is better.

Description

LED driving power supply sealing structure and sealing method

Technical Field

The invention relates to the technical field of LED driving power supply sealing, in particular to an LED driving power supply sealing structure and an LED driving power supply sealing method.

Background

The LED driving power supply is a power converter for converting a power supply into a specific voltage and current to drive the LED to emit light, and is generally: the input of the LED driving power supply comprises high-voltage power frequency alternating current (i.e. commercial power), low-voltage direct current, high-voltage direct current, low-voltage high-frequency alternating current (such as output of an electronic transformer) and the like.

The LED driving power supply is divided into two types, one is non-detachable and the other is detachable, wherein, when the detachable LED driving power supply is designed, two factors in two places mainly need to be considered: one is waterproof at the outlet, the other is waterproof at the assembly position of the shell, for waterproof at the outlet, a rubber wire sleeve is adopted, the waterproof at the outlet is carried out by means of deformation of the rubber wire sleeve, and for waterproof at the shell covering assembly position, a first sealing ring is adopted; the installation of two waterproof structures is carried out independently, the processing steps that need to be involved are more, the process is more complicated, the disassembly and the assembly are very inconvenient, in addition, the adopted sealing ring structure is not from inside to outside, the heat generated in the operation process of the circuit board can enable the internal air pressure of the box body to rise, the risk of sealing failure exists, and the LED driving power supply sealing structure and the sealing method capable of simplifying the processing process and effectively avoiding the sealing failure are needed.

Disclosure of Invention

The invention aims to solve the technical problems of the prior art, and provides an LED driving power supply sealing structure and an LED driving power supply sealing method.

The technical scheme adopted for solving the technical problems is as follows:

the LED driving power supply sealing structure comprises a bottom shell and a face cover, wherein connecting wires are arranged on the inner walls of two opposite sides of the bottom shell in a penetrating manner, a driving circuit board is arranged at the inner bottom of the bottom shell, annular sealing sheets are fixedly sleeved on the connecting wires in a sealing manner, and the sealing sheets are attached to the inner walls of the bottom shell; a square frame extending into the bottom shell is arranged on the lower surface of the face cover, and the size of the square frame is matched with the size of the inner cavity of the bottom shell; the upper end of the outer side surface of the square frame is provided with an annular step, the lower end of the square frame is provided with an accommodating groove matched with the sealing piece and a first wire passing groove corresponding to the connecting wire, and a first sealing ring is sleeved on the annular step; the upper end of the face cover is provided with an extrusion frame and an annular groove matched with the extrusion frame, and a second sealing ring and a positioning groove corresponding to the second sealing ring are arranged on the inner side wall of the groove; the groove is communicated with the annular step, the lower end of the groove is provided with a slot correspondingly communicated with the accommodating groove, the outer side surface of the extrusion frame is provided with an extrusion convex ring for extruding the first sealing ring, two sheet-shaped supporting legs corresponding to the slots one to one are formed at the lower end of the extrusion frame, a second wire passing slot and an extrusion are arranged on the sheet-shaped supporting legs, an annular buckle of the sealing sheet and an elastic piece for providing elastic extrusion force for the annular buckle are arranged on the sheet-shaped supporting legs, an opening for a connecting wire to pass through is formed at the lower end of the annular buckle, an arc-shaped section is connected to the opening through a rotating shaft, and a torsion spring for resetting the arc-shaped section is sleeved on the rotating shaft.

The invention discloses an LED driving power supply sealing structure, wherein three positioning columns are distributed on a sheet-shaped support leg around a second wire passing groove, the elastic piece comprises a U-shaped piece, three guide holes matched with the positioning columns are formed in the U-shaped piece, and the elastic piece further comprises a spring sleeved on the positioning columns and used for providing elastic force for the U-shaped piece; the annular buckle is fixedly arranged with the U-shaped sheet; one end of the positioning column, which is far away from the sheet-shaped supporting legs, is provided with an anti-falling cap for preventing the U-shaped sheet from falling off.

The LED driving power supply sealing structure disclosed by the invention is characterized in that the extrusion convex ring is made of rubber, and the section of the extrusion convex ring is arc-shaped; the cross section of the first sealing ring is in a right trapezoid shape, and the hypotenuse of the right trapezoid faces downwards obliquely towards the extrusion convex ring.

The LED driving power supply sealing structure comprises a surface cover, a through hole and a detection column, wherein the through hole is internally provided with the detection column in a sealing way; the detection column comprises a first detection channel and a second detection channel which are longitudinal; the first detection channel is internally provided with a deformable elastic membrane in a sealing way, and the second detection channel is internally provided with an air inlet piston; and two rubber plugs which respectively and correspondingly seal the first detection channel and the second detection channel are arranged on the detection column.

The invention discloses an LED driving power supply sealing structure, wherein an air inlet piston comprises a piston cylinder embedded in a second detection channel, a piston body matched with the piston cylinder and a piston rod connected with the piston body.

The LED driving power supply sealing structure comprises a connecting wire, wherein the connecting wire is sleeved with a protective sleeve, and the protective sleeve is adhered to the outer side surface of a bottom shell through glue

The invention discloses an LED driving power supply sealing structure, wherein a face cover is connected with a bottom shell through screws.

The LED driving power supply sealing method is applied to the LED driving power supply sealing structure, and comprises the following steps:

when the sealing device is installed, the driving circuit board is installed on the inner bottom installation position of the bottom shell, the connecting wire penetrates out of the hole site on the side wall of the bottom shell, and the sealing piece is attached to the side wall of the bottom shell;

the surface cover is covered and connected on the bottom shell, at the moment, a square frame on the surface cover is inserted into the bottom shell for positioning, after the square frame is inserted into the bottom shell, the first sealing ring corresponds to the covered position of the surface cover and the bottom shell, and the sealing piece is positioned in the accommodating groove;

inserting the extrusion frame into the groove, and after the extrusion frame is inserted into the groove, extruding the first sealing ring by the extrusion convex ring to deform the first sealing ring so as to seal the joint of the face cover and the bottom cover, and simultaneously sealing a gap between the outer side surface of the extrusion frame and the inner wall of the corresponding groove; the arc section that ring-shaped detained receives the connecting wire effort and can inwards move earlier, and the arc section resets under torsional spring effort after the connecting wire is crossed to the arc section, under the elastic component's elastic component, the ring-shaped detains extrusion sealing piece makes its deformation seal to the hole site clearance department on connecting wire and the drain pan lateral wall, and the inner wall extrusion second sealing washer of extrusion frame makes its deformation seal to the clearance between the inner wall of extrusion frame and the inner wall of the recess that corresponds.

The invention has the beneficial effects that: when the sealing device is installed, the driving circuit board is installed on the inner bottom installation position of the bottom shell, the connecting wire penetrates out of the hole site on the side wall of the bottom shell, and the sealing piece is attached to the side wall of the bottom shell; the surface cover is covered and connected on the bottom shell, at the moment, a square frame on the surface cover is inserted into the bottom shell for positioning, after the square frame is inserted into the bottom shell, the first sealing ring corresponds to the covered position of the surface cover and the bottom shell, and the sealing piece is positioned in the accommodating groove; inserting the extrusion frame into the groove, and after the extrusion frame is inserted into the groove, extruding the first sealing ring by the extrusion convex ring to deform the first sealing ring so as to seal the joint of the face cover and the bottom cover, and simultaneously sealing a gap between the outer side surface of the extrusion frame and the inner wall of the corresponding groove; the arc section of the annular buckle moves inwards under the action of the connecting wire, the arc section resets under the action of the torsion spring after the arc section passes over the connecting wire, the annular buckle extrudes the sealing piece to enable deformation of the sealing piece to seal a hole site gap between the connecting wire and the side wall of the bottom shell under the elastic action of the elastic piece, and the inner wall of the extrusion frame extrudes the second sealing ring to enable deformation of the second sealing ring to seal a gap between the inner wall of the extrusion frame and the inner wall of the corresponding groove; the operation can be reversely carried out, the driving circuit board can be detached, the disassembly and the assembly are very convenient, the installation process is simplified, meanwhile, the joint of the bottom shell and the face cover and the joint of the connecting wire outgoing line are sealed from inside to outside, even if the internal air pressure is increased because the driving circuit board heats, the sealing performance is not influenced, and meanwhile, the integrity of the LED driving power supply is better.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to the accompanying drawings and embodiments, in which the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained by those skilled in the art without inventive effort:

FIG. 1 is a cross-sectional view of a sealing structure of an LED driving power supply according to a preferred embodiment of the present invention;

FIG. 2 is a schematic view of a sealing structure of a LED driving power supply according to a preferred embodiment of the present invention;

FIG. 3 is a side view of a sealing structure sheet-like leg of an LED driving power supply in accordance with a preferred embodiment of the present invention;

fig. 4 is a schematic diagram showing the arrangement of a detection column of a sealing structure of an LED driving power supply according to a preferred embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the following description will be made in detail with reference to the technical solutions in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present invention, based on the embodiments of the present invention.

The sealing structure of the LED driving power supply in the preferred embodiment of the invention is shown in fig. 1, and simultaneously referring to fig. 2-4, the sealing structure comprises a bottom shell 1 and a face cover 2, wherein connecting wires 3 are penetrated through the inner walls of two opposite sides of the bottom shell 1, a driving circuit board 4 is arranged at the inner bottom of the bottom shell 1, a circular sealing piece 30 is fixedly sleeved on the connecting wires 3 in a sealing manner, and the sealing piece 30 is attached to the inner wall of the bottom shell 1; the lower surface of the face cover 2 is provided with a square frame 20 extending into the bottom shell 1, and the size of the square frame 20 is matched with the size of the inner cavity of the bottom shell 1; the upper end of the outer side surface of the square frame 20 is provided with an annular step 200, the lower end is provided with a containing groove 201 matched with the sealing piece 30 and a first wire passing groove 202 corresponding to the connecting wire, and a first sealing ring 203 is sleeved on the annular step 200; the upper end of the face cover 2 is provided with an extrusion frame 5 and an annular groove 21 matched with the extrusion frame 5, and the inner side wall of the groove 21 is provided with a second sealing ring 210 and a positioning groove corresponding to the second sealing ring; the groove 21 is communicated with the annular step 200, a groove 212 (the size of which is slightly larger than that of the flaky support legs) which is correspondingly communicated with the accommodating groove 201 is formed at the lower end of the groove 21, an extruding convex ring 50 for extruding the first sealing ring 203 is arranged on the outer side surface of the extruding frame 5, two flaky support legs 51 which are in one-to-one correspondence with the groove 212 are formed at the lower end of the extruding frame 5, a second wire passing groove 510, an annular buckle 511 for extruding the sealing piece 30 and an elastic piece 512 for providing elastic extrusion force for the annular buckle 511 are arranged on the flaky support legs 51, an opening through which the connecting wire 3 passes is formed at the lower end of the annular buckle 511, an arc-shaped section 5112 is connected at the opening through a rotating shaft 5111, a torsion spring for resetting the arc-shaped section 5112 is sleeved on the rotating shaft 5111, and enough elasticity is required when the torsion spring is arranged, so that the arc-shaped section 5112 can overcome the friction resistance with the sealing piece 30 to reset;

when in installation, the driving circuit board 4 is installed on the inner bottom installation position of the bottom shell 1, the connecting wire 3 penetrates out of the hole site on the side wall of the bottom shell 1, and the sealing piece 30 is attached to the side wall of the bottom shell 1; the face cover 2 is connected to the bottom shell 1 in a covering way, at the moment, the square frame 20 on the face cover 2 is inserted into the bottom shell 1 for positioning, after the square frame 20 is inserted into the bottom shell 1, the first sealing ring 203 corresponds to the covering part of the face cover 2 and the bottom shell 1, and the sealing piece 30 is positioned in the accommodating groove 201;

inserting the extrusion frame 5 into the groove 21, and after inserting the extrusion frame into place, extruding the first sealing ring 203 by the extrusion convex ring 50 to deform the first sealing ring so as to seal the joint of the face cover 2 and the bottom shell 1, and sealing a gap between the outer side surface of the extrusion frame 5 and the inner wall of the corresponding groove 21;

the arc-shaped section 5112 of the annular buckle 511 moves inwards under the action of the connecting wire 3, the arc-shaped section 5112 resets under the action of the torsion spring 5113 after the arc-shaped section 5112 passes over the connecting wire 3, the annular buckle 511 extrudes the sealing piece 30 to deform to seal a hole site gap between the connecting wire 3 and the side wall of the bottom shell 1 under the elastic action of the elastic piece 512, and the inner wall of the extrusion frame 5 extrudes the second sealing ring 210 to deform to seal a gap between the inner wall of the extrusion frame 5 and the inner wall of the corresponding groove 21;

the operation can be reversely carried out, the driving circuit board 4 can be detached, the detachment and the installation are very convenient, the installation process is simplified, meanwhile, the connection part of the bottom shell 1 and the face cover 2 and the wire outlet part of the connecting wire 3 are sealed from inside to outside, even if the internal air pressure is increased because of the heating of the driving circuit board 4, the sealing performance is not influenced, and meanwhile, the integrity of the LED driving power supply is better;

in addition, the extrusion frame 5 can finish the positioning of the position by means of the extrusion friction force between the first sealing ring 203 and the extrusion convex ring 50 and the extrusion friction force between the annular buckle 511 and the sealing sheet 30, so that the extrusion frame cannot be easily loosened, no additional fixing structure is required, and the square frame can be disassembled and assembled without tools; in order to facilitate the extraction of the extrusion frame 5, parts such as a handle and the like can be arranged on the extrusion frame 5 according to the requirement, or an extraction groove is formed at the opening of the upper end of the groove 21;

preferably, three positioning posts 513 are distributed on the sheet-shaped support leg 51 around the second wire passing groove 510, the elastic member 512 includes a U-shaped sheet 5120, three guide holes 5121 matched with the positioning posts 513 are formed in the U-shaped sheet 5120, and the elastic member 512 further includes a spring 5122 (two ends of the spring are respectively connected with the U-shaped sheet and the positioning posts) sleeved on the positioning posts 513 to provide elastic force for the U-shaped sheet; the annular button 511 is fixedly arranged with the U-shaped piece 5120; one end of the positioning column 513, which is far away from the sheet-shaped support leg 51, is provided with an anti-drop cap 5130 for preventing the U-shaped sheet 5120 from dropping out; the elastic member 512 is positioned by means of three positioning posts 513, so that the stability is better, and the distribution of elastic force is more uniform.

Preferably, the pressing collar 50 is made of rubber and has an arc-shaped cross section; the cross section of the first sealing ring 203 is in a right trapezoid shape, and the hypotenuse of the right trapezoid is inclined downwards towards the extrusion convex ring 50; by adopting the structure matching mode, the first sealing ring 203 can be better extruded to the contact position of the bottom shell 1 and the face cover 2 by the extrusion convex ring 50, and the sealing reliability is ensured.

Preferably, the surface cover 2 is provided with a through hole 22, and a detection column 23 is penetrated in the through hole 22 in a sealing way; the detection column 23 includes a first detection channel 230 and a second detection channel 231 in the longitudinal direction; a deformable elastic membrane 232 is arranged in the first detection channel 230 in a sealing way, and an air inlet piston 233 is arranged in the second detection channel 231; the detection column 23 is provided with two rubber plugs 234 which respectively and correspondingly seal the first detection channel 230 and the second detection channel 231; the intake piston 233 includes a piston cylinder 2330 fitted in the second detection passage 231, a piston body 2331 fitted to the piston cylinder 2330, and a piston rod 2332 connected to the piston body.

Preferably, the connecting wire 3 is sleeved with a protective sleeve 31, and the protective sleeve 31 is bonded with the outer side surface of the bottom shell 1 through glue; the protective sleeve 31 and the connecting wire 3 do not need to be connected, and can be prevented from being broken.

Preferably, the cover 2 and the bottom case 1 are connected by screws, and of course, conventional connection methods such as snap connection may be adopted.

inserting the extrusion frame into the groove, and after the extrusion frame is inserted into the groove, extruding the first sealing ring by the extrusion convex ring to deform the first sealing ring so as to seal the joint of the face cover and the bottom cover, and simultaneously sealing a gap between the outer side surface of the extrusion frame and the inner wall of the corresponding groove; the arc section of the annular buckle moves inwards under the action of the connecting wire, the arc section resets under the action of the torsion spring after the arc section passes over the connecting wire, the annular buckle extrudes the sealing piece to enable deformation of the sealing piece to seal a hole site gap between the connecting wire and the side wall of the bottom shell under the elastic action of the elastic piece, and the inner wall of the extrusion frame extrudes the second sealing ring to enable deformation of the second sealing ring to seal a gap between the inner wall of the extrusion frame and the inner wall of the corresponding groove;

the operation can be reversely carried out, the driving circuit board can be detached, the disassembly and the assembly are very convenient, the installation process is simplified, meanwhile, the joint of the bottom shell and the face cover and the joint of the connecting wire outgoing line are sealed from inside to outside, even if the internal air pressure is increased because the driving circuit board heats, the sealing performance is not influenced, and meanwhile, the integrity of the LED driving power supply is better.

It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.

Claims

1. The LED driving power supply sealing structure comprises a bottom shell and a face cover, wherein connecting wires are arranged on the inner walls of two opposite sides of the bottom shell in a penetrating manner, and a driving circuit board is arranged at the inner bottom of the bottom shell; a square frame extending into the bottom shell is arranged on the lower surface of the face cover, and the size of the square frame is matched with the size of the inner cavity of the bottom shell; the upper end of the outer side surface of the square frame is provided with an annular step, the lower end of the square frame is provided with an accommodating groove matched with the sealing piece and a first wire passing groove corresponding to the connecting wire, and a first sealing ring is sleeved on the annular step; the upper end of the face cover is provided with an extrusion frame and an annular groove matched with the extrusion frame, and a second sealing ring and a positioning groove corresponding to the second sealing ring are arranged on the inner side wall of the groove; the groove is communicated with the annular step, the lower end of the groove is provided with a slot correspondingly communicated with the accommodating groove, the outer side surface of the extrusion frame is provided with an extrusion convex ring for extruding the first sealing ring, two sheet-shaped supporting legs corresponding to the slots one to one are formed at the lower end of the extrusion frame, a second wire passing slot and an extrusion are arranged on the sheet-shaped supporting legs, an annular buckle of the sealing sheet and an elastic piece for providing elastic extrusion force for the annular buckle are arranged on the sheet-shaped supporting legs, an opening for a connecting wire to pass through is formed at the lower end of the annular buckle, an arc-shaped section is connected to the opening through a rotating shaft, and a torsion spring for resetting the arc-shaped section is sleeved on the rotating shaft.

2. The LED driving power supply sealing structure according to claim 1, wherein three positioning columns are distributed on the sheet-shaped supporting legs around the second wire passing groove, the elastic piece comprises a U-shaped piece, three guide holes matched with the positioning columns are formed in the U-shaped piece, and the elastic piece further comprises a spring sleeved on the positioning columns and used for providing elastic force for the U-shaped piece; the annular buckle is fixedly arranged with the U-shaped sheet; one end of the positioning column, which is far away from the sheet-shaped supporting legs, is provided with an anti-falling cap for preventing the U-shaped sheet from falling off.

3. The LED driving power sealing structure according to claim 1, wherein the pressing collar is made of rubber and has an arc-shaped cross section; the cross section of the first sealing ring is in a right trapezoid shape, and the hypotenuse of the right trapezoid faces downwards obliquely towards the extrusion convex ring.

4. The LED driving power supply sealing structure according to claim 1, wherein a through hole is formed in the face cover, and a detection column is penetrated in the through hole in a sealing manner; the detection column comprises a first detection channel and a second detection channel which are longitudinal; the first detection channel is internally provided with a deformable elastic membrane in a sealing way, and the second detection channel is internally provided with an air inlet piston; and two rubber plugs which respectively and correspondingly seal the first detection channel and the second detection channel are arranged on the detection column.

5. The LED driving power sealing structure according to claim 4, wherein the air intake piston comprises a piston cylinder embedded in the second detection channel, a piston body matched with the piston cylinder, and a piston rod connected with the piston body.

6. The LED driving power supply sealing structure according to claim 1, wherein the connecting wire is sleeved with a protective sleeve, and the protective sleeve is adhered to the outer side surface of the bottom shell through glue.

7. The LED driving power sealing structure according to claim 1, wherein the face cover is screwed to the bottom case.

8. An LED driving power sealing method applied to the LED driving power sealing structure according to any one of claims 1 to 7, comprising the steps of: