WO2021218113A1

WO2021218113A1 - Led cabinet and fastening structure

Info

Publication number: WO2021218113A1
Application number: PCT/CN2020/128145
Authority: WO
Inventors: 贺金锋; 赵永春
Original assignee: 深圳市洲明科技股份有限公司
Priority date: 2020-04-27
Filing date: 2020-11-11
Publication date: 2021-11-04
Also published as: CN211906828U

Abstract

An LED cabinet and a fastening structure. The LED cabinet comprises a body (1), a PCB board (2), and connectors; the PCB board (2) is fixed on the body (1) by means of the connectors; each connector comprises a male fastener (3) and a female fastener (4); an end of the male fastener (3) is provided with a first conical section (31) and a step portion (32) connected to each other; the female fastener (4) is provided with a barb portion (41); the first conical section (31) extends into the fastening cavity of the female fastener (4); the barb portion (41) locks the step portion (32).

Description

LED box and buckle structure

Technical field

This application relates to the field of LED technology, in particular to an LED box and a buckle structure.

Background technique

LED display technology and LED lighting technology are widely used in daily life. When using LED components outdoors, the LED components are usually installed in the LED box to protect the LED components from climate and environmental influences. However, most of the conventionally set PCB boards are fixed on the LED box body by means of screws or connection locks. The traditional fixing method is cumbersome to install and requires a lot of labor costs.

Summary of the invention

The technical problem to be solved by this application is to provide an LED box that is easy to install.

In one aspect, the present application provides an LED box, including a main body, a PCB board, and a connector. The PCB board is fixed on the main body by the connector, wherein the connector includes a sub button and a female button. , The end of the sub-buckle is provided with a connected first tapered section and a step portion, the female buckle is provided with a barb portion, and the first tapered section extends into the buckle cavity of the female buckle , The barb portion is locked at the step portion.

Further, the female buckle includes a bottom plate and a plurality of elastic arms arranged on the bottom plate, and the plurality of elastic arms are arranged in a ring shape and enclose the buckle cavity of the female buckle, and each elastic arm The barb part is provided on the upper part.

Further, the side of the bottom plate facing away from the elastic arm is fixed on the main body or the PCB board, and the sub-buckle is fixed on the PCB board or the main body.

Further, the bottom plate is fixed on the main body or the PCB board by adhesive connection, screw connection or welding.

Further, the LED box body further includes a matching guide post and a guide hole, the bottom plate is provided with the guide hole, and the main body or the PCB board is provided with the guide post.

Further, the sub-buckle further includes a base and a positioning portion, one side of the base is provided with the step portion and the first tapered section in sequence, and the other side of the base is provided with the positioning portion, The positioning part is fixed on the PCB board or the main body.

Further, the PCB board or the main body is provided with matching and mounting holes for the positioning portion.

Further, the barb portion is provided with an outer guide surface matched with the first tapered section.

Further, a second tapered section is provided on the step portion.

Further, the LED box body further includes an elastic member and a retaining ring, the retaining ring is sleeved on the sub-buckle, and the elastic member is provided between the retaining ring and the PCB board.

In another aspect, the present application provides a buckle structure, including a female buckle and a sub buckle, wherein the female buckle includes a bottom plate and a plurality of elastic arms protruding outward from the bottom plate, and the plurality of elastic arms are Annularly arranged and encloses the buckle cavity of the female buckle, each of the elastic arms is provided with a barb portion, each of the barb portions includes an outer guide surface and an inner guide surface, the outer guide surface and The tip of the barb portion is formed between the inner guide surfaces; the sub-buckle includes a first tapered section, a second tapered section, and a base connected in sequence, the first tapered section and the second tapered section The convergent direction of the tapered section is opposite; the first tapered section is adapted to be slidably fitted with each of the outer guide surfaces to push each of the elastic arms to open, so that the sub buckle is inserted into the buckle of the female buckle Cavity; when the sub buckle and the female buckle are connected in place, the second tapered section is in contact with the inner guide surface, and the elastic arm is closed.

Further, the bottom plate is provided with a cylindrical portion protruding to the buckle cavity of the female buckle, and the end surface of the cylindrical portion is provided with a tapered hole for receiving the tip of the first tapered section.

Further, the sub-buckle further includes a cylindrical section located between the first tapered section and the second tapered section.

Further, the sub-buckle further includes a retaining ring sleeved on the base and an elastic member, the retaining ring is provided with a recess suitable for accommodating the plurality of elastic arms, and the elastic member is suitable for holding the The retaining ring is used to keep the recesses sleeved on the outside of the plurality of elastic arms.

Further, the retaining ring is made of magnetic material.

Further, a guide hole is provided on the bottom plate.

Further, a positioning part is provided on the base part.

In yet another aspect, the present application also provides an LED box, including a main body, a PCB board, and the above-mentioned buckle structure, wherein the bottom plate of the female buckle and the base of the sub buckle are respectively installed on the main body and On the PCB, the main body and the PCB board are joined by the buckle structure.

The beneficial effect of the present application is that after the first tapered section on the end of the sub buckle enters the female buckle, the barb portion of the female buckle is immediately locked on the step portion of the sub buckle, and the sub buckle is in the female buckle after a short stroke. The internal formation is effectively locked, which greatly simplifies the installation steps of the LED box and the PCB board, and reduces the labor cost of manufacturing the LED box.

Description of the drawings

FIG. 1 is an exploded view of a part of the structure of the LED box according to the first embodiment of the application;

2 is a schematic diagram of a part of the structure of the LED box in the first embodiment of the application;

FIG. 3 is a partial structural cross-sectional view of the LED box body according to the first embodiment of the application; FIG.

4 is a schematic diagram of the sub-buckle structure of the LED box body of the first embodiment of the application;

FIG. 5 is a schematic diagram of the female buckle structure of the LED box according to the first embodiment of the application;

Fig. 6 is an exploded view of a part of the structure of the LED box in the second embodiment of the application;

FIG. 7 is a partial structural cross-sectional view of the LED box in the second embodiment of the application.

Detailed ways

In order to describe in detail the technical content, the achieved purpose and the effect of the present application, the following description will be given in conjunction with the embodiments and the accompanying drawings.

The most critical idea of the present application is that after the sub buckle has a short stroke, the stepped portion can be effectively locked in the female buckle, and the installation is simple and convenient.

1-7, there is shown an embodiment of an LED box body, the LED box body includes a main body 1, a PCB board 2 and a connecting piece, the PCB board 2 is fixed to the main body through the connecting piece 1 on. The connecting member includes a sub buckle 3 and a female buckle 4, the end of the sub buckle 3 is provided with a connected first tapered section 31 and a step portion 32, and the female buckle 4 is provided with a barb portion 41, The first tapered section 31 extends into the female buckle 4, and the barb portion 41 and the step portion 32 are snapped together.

In the above-mentioned connecting piece, the first tapered section 31 on the end of the sub buckle is connected to the step section 32. The first tapered section 31 first stretches the barb portion 41 of the female buckle 4 to enter the buckle of the female buckle 4. After the first tapered section 31 completely enters the buckle cavity of the female buckle 4, the barb portion 41 of the female buckle 4 automatically returns under the elastic force, so that the stepped portion 32 immediately contacts the barb of the female buckle 4 The part 41 forms a lock to fix the PCB board 2 on the LED box.

It can be seen from the above description that after the first tapered section 31 on the end of the sub buckle 3 enters the female buckle 4, the barb portion 41 of the female buckle 4 is immediately locked on the step portion 32 of the sub buckle 3. An effective lock is formed in the female buckle 4 after the stroke, which greatly simplifies the installation steps of the LED box and the PCB board, and reduces the labor cost of manufacturing the LED box.

In some embodiments, the female buckle 4 includes a bottom plate 42 and a plurality of elastic arms 43 provided on the bottom plate 42. The plurality of elastic arms 43 are arranged in a ring shape and enclose the buckle cavity of the female buckle 4, and a gap is left between adjacent elastic arms 43. Each of the elastic arms 43 is provided with the barb portion 41, and the barb portions 41 all protrude toward the buckle cavity.

It can be seen from the above description that the elastic arms 43 arranged in a ring shape are buckled by the respective barbs 41 to the stepped portion 32 of the sub buckle 3 to achieve the locking of the female buckle 4 and the child buckle 3 and the locking of the female buckle 4 and the child buckle. The connection stability of the buckle 3.

In some embodiments, the side of the bottom plate 42 facing away from the elastic arm 43 is fixed on the main body 1 or the PCB board 2, and the sub-buckle 3 is fixed on the PCB board 2 or the main body 1.

In some embodiments, the bottom plate 42 is fixed on the main body 1 or the PCB board 2 by means of adhesive connection, screw connection or welding.

From the above description, it can be seen that the fixing of the female buckle 4 can choose different connection methods according to actual needs and product requirements, which has strong versatility.

In some embodiments, the bottom plate 42 is provided with a guide hole 6, the main body 1 or the PCB board 2 is provided with a guide post 5, and the guide hole 6 is matched with the guide post 5. In this way, the installation and positioning of the female buckle 4 can be conveniently realized.

In some embodiments, the sub-buckle 3 further includes a base 33 and a positioning portion 34. One side of the base 33 is sequentially provided with the stepped portion 32 and the first tapered section 31, and the other of the base 33 The positioning portion 34 is provided on the side, and the positioning portion 34 is fixed on the PCB board 2 or the main body 1.

In some embodiments, the positioning portion 34 is a positioning column, and the PCB board 2 or the main body 1 is provided with a mounting hole 7 matching the positioning portion 34. In this way, the installation and positioning of the sub-buckle 3 can be conveniently realized.

In some embodiments, the step portion 32 is provided with a second tapered section 321. In some embodiments, the barb portion 41 is provided with a tapered outer guide surface 411 that cooperates with the first tapered section 31 and a tapered inner guide surface 411 that cooperates with the second tapered section 321. The tip of the barb is formed between the surface 412, the outer guide surface 411 and the inner guide surface 412. In this way, when it is necessary to disengage the sub buckle 3 from the female buckle 4, the sub buckle 3 can be easily released from the lock of the barb portion 41 through the cooperation of the second tapered section 321 and the inner guide surface 412, which is convenient for the sub buckle. 3 Remove from the female buckle 4.

In some embodiments, it further includes an elastic member and a retaining ring 10, the retaining ring 10 is sleeved on the sub-buckle 3, and the elastic member is provided between the retaining ring 10 and the PCB board 2. In this way, in the locked state, the retaining ring 10 against the sub buckle 3 can prevent the sub buckle 3 from loosening from the female buckle 4.

Example one

1 to 5, the first embodiment of the present application provides an LED box, including a main body 1, a PCB board 2 and a connector, the PCB board 2 is fixed on the main body 1 through the connector , The connecting member includes a sub buckle 3 and a female buckle 4, the end of the sub buckle 3 is provided with a connected first tapered section 31 and a step portion 32, and the female buckle 4 is provided with a barbed portion 41 The first tapered section 31 extends into the female buckle 4, and the barb portion 41 is locked at the step portion 32. In this embodiment, the sub buckle 3 and the female buckle 4 have an interference fit, and the sub buckle 3 and the female buckle 4 of the interference fit are interference fit at the step portion 32 and the barb portion 41 to eliminate the interference between the two The gap makes the connection between the sub buckle 3 and the female buckle 4 closer.

The female buckle 4 includes a bottom plate 42 and a plurality of elastic arms 43 arranged on the bottom plate 42. The plurality of elastic arms 43 are arranged in a ring shape, and the barb portions are all provided on the elastic arms 43. 41. For example, each of the female buckles 4 is provided with four elastic arms 43, and the four elastic arms 43 are arranged in a ring shape, and each elastic arm 43 is arranged on a side close to the center of the bottom plate 42.述barb 41. The barb portion 41 may be provided with an outer guide surface 411 and an inner guide surface 412. The step portion 32 may include, for example, a cylindrical section 322 and a second tapered section 321 (see FIG. 3). The second tapered section 321 is connected to the first tapered section 31 through the cylindrical section 322, and the second tapered section The convergence direction of 321 is opposite to the convergence direction of the first tapered section 31. It is easy to understand that when the first tapered section 31 enters the female buckle 4, the first tapered section 31 is in contact with the outer guide surface 411, pushing the annularly arranged elastic arms 43 to expand around, facilitating the first tapered section. The section 31 smoothly enters the buckle cavity between the four elastic arms 43, and then the elastic arms 43 are contracted inwardly, and the inner guide surface 412, for example, hugs the second tapered section 321 to realize the clamping of the female buckle 4 to the child buckle 3. Hold fixed.

1 and 2, the side of the bottom plate 42 away from the elastic arm 43 is fixed on the main body 1, and the sub-buckle 3 is fixed on the PCB board 2.

The bottom plate 42 may be fixed on the main body 1 or the PCB board 2 by adhesive connection, screw connection or welding. The adhesive connection includes but is not limited to hot melt glue, plastic or 3M glue. The welding includes but not Limited to ultrasonic welding.

In this embodiment, the LED box may further include a matching guide post 5 and a guide hole 6, the bottom plate 42 is provided with the guide hole 6, and the main body 1 is provided with the guide post 5 to Realize the fast positioning of the female buckle 4. In some embodiments, the guide hole 6 or the guide post 5 is coated with UV glue, and the UV glue is cured under an ultraviolet lamp to enhance the connection strength between the female button 4 and the main body 1.

In some embodiments, the sub-buckle 3 may further include a base 33 and a positioning portion 34. One side of the base 33 is sequentially provided with the stepped portion 32 and the first tapered section 31, and the other of the base 33 The positioning portion 34 is provided on one side, and the positioning portion 34 is fixed on the PCB board 2. In some embodiments, the positioning portion 34 may be a positioning pillar, and the PCB board 2 is provided with a mounting hole 7 matching the positioning portion 34.

The axial length of the cylindrical section 322 of the step portion 32 may be much smaller than the axial length of the first tapered section 31 and the second tapered section 321. In some embodiments, the step portion 32 may not be provided with the columnar section 322. When the first tapered section 31 enters the elastic arm 43, the first tapered section 31 slides toward the buckle cavity of the female buckle 4 under the guiding action of the outer guide surface 411, and the barb portion 41 buckles the step portion 32. When the sub buckle 3 needs to be separated from the female buckle 4, under the action of external force, the inner guide surface 412 and the second tapered section 321 slide relatively, so that the sub buckle 3 is easily separated from the female buckle 4.

The bottom plate 42 is also provided with a cylindrical portion 46 protruding to the buckle cavity of the female buckle 4, and the end surface of the cylindrical portion 46 is provided with a tapered hole for receiving the tip of the first tapered section 31 460. The hole wall of the tapered hole 460 can abut against the first tapered section 31 to ensure the position stability of the sub-buckle 3.

In another feasible embodiment, the side of the bottom plate 42 facing away from the elastic arm 43 may be fixed on the PCB board 2, and the sub-buckle 3 may be fixed on the main body 1.

Example two

6 and 7, the main difference of the above-mentioned embodiment of this embodiment is that it also includes an elastic member and a retaining ring 10. The retaining ring 10 can be sleeved on the base 33 of the sub-buckle 3. The elastic member is provided between the retaining ring 10 and the PCB board 2. The elastic member may be a spring 11 sleeved on the base 33. The retaining ring 10 is provided with a recess 101 suitable for accommodating the plurality of elastic arms 43, and the recess 101 faces the elastic arms 43. The elastic member is adapted to resist the retaining ring 10 to keep the recess 101 sleeved outside the plurality of elastic arms 43. When the sub buckle 3 is locked in the female buckle 4, the retaining ring 10 moves upward under the action of the spring 11 to accommodate the plurality of elastic arms 43 in the recess 101, and the outer peripheral wall of the recess 101 restricts the outer circumference of the plurality of elastic arms 43 The wall prevents undesired expansion of the plurality of elastic arms 43, thereby stably locking the sub-buckle 3 in the female buckle 4 and preventing the sub-buckle 3 from loosening.

The retaining ring 10 may be made of magnetic material. For example, the PCB board 2 is provided with an electromagnet or a mounting position for a magnetic attraction. When it is necessary to release the buckle connection between the sub-buckle 3 and the female buckle 4, the electromagnet on the PCB board 2 is energized or a magnetic member is assembled on the mounting position of the PCB board 2, and the magnetic member is used to attract the retaining ring 10 downward Movement, at this time, the retaining ring 10 no longer limits the opening movement of the plurality of elastic arms 43. When the PCB board 2 needs to be disassembled, the PCB board 2 can be grasped by vacuum negative pressure or magnetic attraction, and the PCB board 2 can be moved away from the main body 1 so as to release the buckle engagement of the sub-buckle 3 and the female buckle 4.

In summary, in the LED box provided by the present application, when the first tapered section 411 enters the female buckle, the elastic arms 43 arranged in a ring shape expand to the periphery, so that the first tapered section 411 can smoothly enter the four The buckle cavity between the elastic arms, and then the elastic arms contract inwardly to close and hug the second tapered section 412, and the barb portion is immediately locked with the step portion. The installation process is simple and fast, which is beneficial to reduce production costs.

The above are only examples of this application, and do not limit the scope of this application. All equivalent changes made using the content of the description and drawings of this application, or directly or indirectly applied in related technical fields, are included in the same way. Within the scope of patent protection of this application.

Claims

An LED box includes a main body, a PCB board, and a connecting piece. The PCB board is fixed on the main body through the connecting piece. The connecting piece includes a sub-buckle and a female buckle. A first tapered section and a stepped section are provided on the part, the female buckle is provided with a barb part, the first tapered section extends into the buckle cavity of the female buckle, and the barb part locks Stop at the step.
The LED box according to claim 1, wherein the female buckle comprises a bottom plate and a plurality of elastic arms arranged on the bottom plate, and the plurality of elastic arms are arranged in a ring shape and surround the female buckle In the buckle cavity, each of the elastic arms is provided with the barb portion.
The LED box according to claim 2, wherein the side of the bottom plate facing away from the elastic arm is fixed on the main body or the PCB board, and the sub-buckle is fixed on the PCB board or the main body.
The LED box according to claim 2, wherein the bottom plate is fixed on the main body or the PCB board by adhesive connection, screw connection or welding.
The LED box according to claim 2, further comprising a matching guide post and a guide hole, the bottom plate is provided with the guide hole, and the main body or the PCB board is provided with the guide post.
The LED box according to claim 1, wherein the sub-buckle further comprises a base and a positioning portion, one side of the base is provided with the step portion and the first tapered section in sequence, and the The positioning part is provided on the other side, and the positioning part is fixed on the PCB board or the main body.
The LED box according to claim 6, wherein the PCB board or the main body is provided with a matching hole and a mounting hole on the positioning part.
The LED box according to claim 1, wherein the barb portion is provided with an outer guide surface that matches with the first tapered section.
The LED box according to claim 1, wherein the stepped portion is provided with a second tapered section.
The LED box according to claim 1, further comprising an elastic member and a retaining ring, the retaining ring is sleeved on the sub-buckle, and the elastic member is provided between the retaining ring and the PCB board .
A buckle structure includes a female buckle and a sub buckle, wherein,

The female buckle includes a bottom plate and a plurality of elastic arms protruding outward from the bottom plate, and the plurality of elastic arms are arranged in a ring shape and enclose a buckle cavity of the female buckle, and each elastic arm is respectively A barb portion is provided, each of the barb portions includes an outer guide surface and an inner guide surface, and a tip of the barb portion is formed between the outer guide surface and the inner guide surface;

The sub-buckle includes a first tapered section, a second tapered section, and a base that are sequentially connected, and the first tapered section and the second tapered section have opposite converging directions; the first tapered section is suitable In sliding cooperation with each of the outer guide surfaces to push each of the elastic arms to open, so that the sub buckle is inserted into the buckle cavity of the female buckle; when the sub buckle and the female buckle are connected in place, The second tapered section is in contact with the inner guide surface, and the elastic arm is closed.
The buckle structure according to claim 11, wherein the bottom plate is provided with a cylindrical portion protruding to the buckle cavity of the female buckle, and an end surface of the cylindrical portion is provided with an end surface for accommodating the first cone. Conical hole at the tip of the shaped section.
The buckle structure according to claim 11, wherein the sub-buckle further comprises a cylindrical section located between the first tapered section and the second tapered section.
The buckle structure according to claim 11, wherein the sub-buckle further comprises a retaining ring sleeved on the base and an elastic member, and the retaining ring is provided with a recess adapted to accommodate the plurality of elastic arms The elastic member is adapted to resist the retaining ring so that the concave portion is kept sleeved on the outside of the plurality of elastic arms.
The buckle structure according to claim 14, wherein the retaining ring is made of a magnetic material.
The buckle structure according to claim 11, wherein a guide hole is provided on the bottom plate.
The buckle structure according to claim 11, wherein a positioning portion is provided on the base portion.
An LED box body, comprising a main body, a PCB board, and the buckle structure according to any one of claims 11 to 17, wherein the bottom plate of the female buckle and the base of the sub buckle are respectively mounted on the main body and On the PCB, the main body and the PCB board are joined by the buckle structure.