CN109506213B

CN109506213B - Stamping forming's lamps and lanterns casing

Info

Publication number: CN109506213B
Application number: CN201811201187.6A
Authority: CN
Inventors: 周丰泉
Original assignee: Ningbo Ls Lighting Co ltd
Current assignee: Ningbo Ls Lighting Co ltd
Priority date: 2018-10-16
Filing date: 2018-10-16
Publication date: 2020-12-29
Anticipated expiration: 2038-10-16
Also published as: CN109506213A

Abstract

The invention discloses a stamping formed lamp shell, which relates to the technical field of lighting devices and comprises a bottom plate, wherein the bottom plate is provided with a stamping formed riveting boss which protrudes inwards, the riveting boss is used for positioning and/or riveting and fixing a lamp panel, and the maximum diagonal length of the cross section of the riveting boss is 2.0-4.0 mm; the small lamp panel can be directly matched with the riveting boss to be positioned and fixed on the bottom plate, other fasteners are not needed for fixing the lamp panel, and the installation is simple, convenient and quick; during the installation of large-scale lamp plate, the riveting boss can play the effect of fixing a position rapidly and preliminary riveting, and on a plurality of blind holes of punching stretch shaping on the rethread bottom plate, with the fixed bottom plate of lamp plate installation, can ensure the intensity of boss and the stability of lamp plate installation, can guarantee the radiating effect of lamp plate again.

Description

Stamping forming's lamps and lanterns casing

Technical Field

The invention relates to the technical field of lighting devices, in particular to a stamping-formed lamp shell.

Background

In the field of lighting equipment, the requirements for assembling and radiating lamps are continuously improved, but the middle of a shell of the existing lamp is bulged during assembling, so that the contact area between a lamp panel and the shell is reduced, and the lamp cannot be radiated well; when the lamp panel is installed on the shell through the round hole type screw holes, the phenomenon that the lamp panel is loosened is easy to occur, the assembling effect is poor, and the assembling efficiency is low; meanwhile, most of existing lamp housings are cast and formed castings, although the castings can be cast into various structures and shapes according to needs, the castings are low in production efficiency and high in cost compared with stamping parts, meanwhile, the casting parts are poor in heat dissipation effect, the lamp housings are machined by the stamping parts, the lamp panels are fixed on the housings in a mode of welding or bonding, on one hand, the work efficiency is reduced, on the other hand, the defects that the lamp panels are not firm in fixation, the installation process is complex and unsafe and the like exist.

The LED lamp radiator cover plate disclosed in the Chinese invention patent CN104949082A comprises a circular flat plate-shaped cover plate, wherein a screw hole is arranged on the cover plate, an upward flanging is arranged at the edge of the cover plate, a flanging is arranged on the screw hole, the screw hole is stretched on the basis of a round hole type screw hole before improvement, and a convex flanging structure is formed on the radiator cover plate; the LED lamp radiator cover plate disclosed by the invention is relatively complex in fixing the small lamp panel through the screw holes, the efficiency is relatively low, and the screw cap also occupies a relatively large position, so that the lamp effect is influenced.

Also disclosed in chinese utility model patent CN202097351U is a blind hole riveting structure of aluminum plate fixing stud. The aluminum plate thickness that adopts is greater than or equal to 1.5mm, at the first circular shape blind hole of aluminum plate back processing, the blind hole bottom is the plane, the fixing stud material is cylindrical aluminum product, the bottom is the plane, there is the round recess bottom the fixing stud lateral surface, there is a round hole in the middle of the drift, there is the bellied edge of round hole periphery, there is the chamfer in the edge inside, put into the aluminum plate blind hole with fixing stud, overlap the round hole of drift on fixing stud again, then carry out the punching press to the drift, make the bellied marginal part in the middle of the drift extrude completely in the aluminum plate, extrude into fixing stud's recess with the peripheral aluminium material of aluminum plate blind hole in, the chamfer at drift round hole edge is the toper with the peripheral extruded edge that receives of aluminum plate blind hole, the utility model discloses a blind hole riveted structure of double.

Disclosure of Invention

Aiming at the defects in the prior art, the invention particularly provides the stamping-formed lamp shell which is high in production efficiency and convenient for installing the lamp panel, solves the problems of low production efficiency and high cost of the lamp shell, also solves the problems of low assembly efficiency and easy looseness of the lamp shell in the process of assembling the lamp shell and the lamp panel, and can further solve the problem of poor heat dissipation effect of the conventional lamp shell.

In order to solve the problems, the lamp shell formed by stamping comprises a bottom plate, wherein the bottom plate is provided with a riveting boss which is formed by stamping and protrudes inwards, the riveting boss is used for positioning and/or riveting and fixing the lamp panel, the length of the maximum diagonal line of the cross section of the riveting boss is 2.0-4.0 mm, and the height of the riveting boss is not more than the thickness of the bottom plate.

The lamp panel is a circuit board provided with electronic components such as an LED lamp tube, a circuit, a resistor and a capacitor, and is used as a light emitting unit of the lamp and installed in a lamp shell. The effect of riveting boss can be the lamp plate of simple location, perhaps the fixed lamp plate of simple riveting, perhaps has aforementioned two kinds of effects simultaneously concurrently.

The cross section of the riveting boss is preferably circular, or can be square or other irregular special shapes, a connecting line between two points with the largest distance on the cross section is the largest diagonal line, and a large number of tests show that if the length L of the largest diagonal line of the cross section of the riveting boss is too small, the strength of the riveting boss cannot meet the installation requirement, the riveting boss is easy to bend and cannot play a role in fixing or positioning a lamp panel, and meanwhile, a punching needle matched with the riveting boss is correspondingly thin, so that the punching needle is easy to break and frequent to replace in the punching process, and the manufacturing efficiency and the cost of the lamp shell are directly influenced; if above-mentioned maximum diagonal length is too big, then at the in-process of stamping forming riveting boss, the bottom plate is punched by the punch pin, will form a transition circular arc alpha that is showing in the joint department of the side global and the bottom plate inner wall of riveting boss during tensile, when the through-hole riveting on the lamp plate passes through on the lamp plate is on this boss, this show excessive circular arc that exists when the lamp plate progressively supports near the bottom plate inner wall of lamps and lanterns casing, will produce the retardation that is showing to the through-hole on the lamp plate, thereby cause the unable bottom plate with the lamps and lanterns casing of lamp plate closely to laminate and form obvious space between the two, this space interval is h3, therefore the riveted lamp plate on the boss is just not hard up easily, more serious, the unable rapid conduction of the produced heat of lamp plate work carries out effectual heat dissipation to the bottom plate of casing, and then seriously influence life-span and. Therefore, no matter which shape the cross section of the riveting boss is in, the maximum diagonal length of the cross section of the riveting boss should be controlled within a very suitable accurate range, the maximum diagonal length of the cross section of the riveting boss is locked within a range of 2.0mm to 4.0mm, namely greater than or equal to 2mm and less than or equal to 4.0mm, and within the numerical range, good technical effects can be produced: the riveting boss on the bottom plate of the lamp shell can meet the self-strength requirement, so that the lamp shell can fully play a role in fixing and/or positioning the lamp panel, and the phenomena that a punching pin matched with the riveting boss is easy to break and is frequently replaced are avoided; more importantly, the biggest diagonal length of riveting boss cross section sets up in this numerical range, with this phase-match, the bottom plate at the casing is punched the needle punching press, in the combination department of the side global and the bottom plate inner wall of riveting boss when tensile, form the right angle easily, or even if can form a transition circular arc alpha but very unobvious, can not form a transition circular arc alpha that is showing, thereby effectual lamp plate and the bottom plate inner wall of casing of having overcome can not closely laminate and lead to the lamp plate heat dissipation bad, the technical defect who easily becomes flexible, the life-span and the security of lamps and lanterns have been improved, and it is more convenient to assemble.

Because the shell and the riveting boss of the lamp are both formed by punching, in order to ensure the strength of the riveting boss and the joint of the riveting boss and the bottom plate, the height of the riveting boss is not greater than the thickness of the bottom plate, and if the height of the riveting boss is designed to be greater than the thickness of the bottom plate, the joint of the riveting boss and the bottom plate is easy to crack in the punching process, so that the riveting boss loses the function and cannot play a waterproof role, and water is easy to enter the interior of the lamp.

As better selection, riveting boss side global with the junction of bottom plate inner wall is the right angle, and this kind of structure means that there is not transition circular arc alpha in the two junction position, therefore when the lamp plate through its last through-hole riveting on the riveting boss, the lamp plate can not have the bottom plate of obstacle and the casing closely laminate, and like this, the heat that the lamp plate produced will directly conduct the bottom plate to the casing in work and carry out effectual heat dissipation, and simultaneously, the lamp plate laminating makes the installation compacter, convenient on the bottom plate of casing, and the lamp plate can not become flexible.

Certainly, it is difficult sometimes to require that the joint of riveting boss lateral periphery and bottom plate inner wall is the right angle in actual production, or because the precision is not enough in the technology or the error that is difficult to avoid in the production can be in riveting boss lateral periphery with the joint of bottom plate inner wall has transition circular arc alpha, at this moment, the radius of circular arc must be as little as possible, and a large amount of experiments show, when the radius r of circular arc is not more than 0.3mm, then transition circular arc alpha is not showing to exist, and the lamp plate still can be the biggest near the bottom plate of casing, and the influence that the lamp plate dispels the heat is not big. If the radius r of circular arc is greater than 0.3mm, then transition circular arc alpha is showing and exists, thereby the lamp plate then can't be close to enough with the bottom plate inner wall of casing and form obvious space between the two, can seriously influence the heat dissipation of lamp plate like this, also be difficult for after the casing is installed to the lamp plate moreover and become flexible easily. Therefore, as a preferable mode, when the junction of the riveting boss side circumference and the bottom plate inner wall has a transition circular arc α, the radius r of the circular arc is not more than 0.3 mm.

Furthermore, the bottom plate is also provided with a blind hole which is formed by punching and protrudes outwards and is used for fixing the lamp panel, the diameter of the blind hole is phi 2.2 mm-phi 3.2mm, namely, the diameter is more than or equal to 2.2mm and less than or equal to 3.2mm, and the depth of the blind hole is not less than 2.9 mm; the selection of above-mentioned blind hole diameter and degree of depth can the effectual current, as the screw of standard part of matching, can conveniently further fix the lamp plate on the bottom plate of lamps and lanterns casing through the screw like this. In addition, if the aperture of the blind hole is too large, the screw fastened on the lamp panel is too large, so that the effective area of the lamp panel and the layout of the lamp panel are affected, and the aperture is preferably not larger than 3.2 mm; on the contrary, if the aperture of the blind hole is too small, the screw is correspondingly smaller, the difficulty in lamp assembly is correspondingly increased by a large amount, and therefore the preferred aperture is not smaller than 2.2 mm.

Furthermore, the lamp shell further comprises an outward-turning connecting part which is located on the periphery of the bottom plate and is formed by being integrally punched with the bottom plate, and a through hole is formed in the outward-turning connecting part. The connecting portion of turning up is equipped with 2, and 2 connecting portions of turning up set up the both sides at the bottom plate of casing relatively. The function of the eversion connecting part is convenient for the lamp shell to be connected with an external bracket. In the prior art, two connecting parts are welded on the side surface of the stamped lamp shell to be connected with an external support, so that the process, cost and operation risk are increased, and compared with the prior art, the arrangement of the outwards-turned connecting parts simplifies the manufacturing process of the connecting structure and improves the production efficiency and safety.

In addition, the shell is made of pure aluminum, preferably an AL-1060 pure aluminum plate, has the advantages of strong plasticity and excellent processing performance, also has good heat-conducting performance, is suitable for punching riveting bosses and blind holes meeting the requirements, and can well dissipate heat.

Compared with the prior art, the shell of the lamp is formed by punching, so that the manufacturing efficiency of the lamp shell is greatly improved compared with a cast lamp shell, the cost and the energy consumption are reduced, and the heat conducting performance of the lamp shell is better; the bottom plate is provided with the plurality of riveting bosses through stamping and stretching, so that the small lamp panel can be directly matched with the riveting bosses to be positioned and fixed on the bottom plate, and the installation is simple, convenient and rapid; when the large-scale lamp plate needs to be installed in the lamp shell, the riveting boss can play the roles of rapid positioning and preliminary riveting fixation, and a plurality of blind holes formed by stamping and stretching on the bottom plate are used for installing the lamp plate on the fixed bottom plate. Consequently, the setting of riveting boss can play the effect of fixing a position lamp plate and riveting fixed or preliminary fixed rapidly, and importantly, the biggest diagonal length of stamping forming's riveting boss cross section is restricted at an accurate numerical range to both can ensure the intensity of boss and the stability of lamp plate installation, can guarantee again that lamp plate and bottom plate closely laminate or be close to very, make the radiating effect of lamp plate good, the lamp plate can not appear not hard up yet. Therefore, the lamp and the lamp shell can be produced with high efficiency, the lamp panel can be mounted on the shell more conveniently and stably, the lamp panel and the lamp have better heat dissipation effect and safety and longer service life, and the production cost is greatly reduced.

Drawings

FIG. 1 is a schematic view of a lamp housing of the present invention;

FIG. 2 is a schematic view of a bracket with a housing according to example 3 of the present invention;

FIG. 3 is a cross-sectional view of FIG. 1 of the present invention;

FIG. 4 is an enlarged view of portion B of FIG. 3 in accordance with the present invention;

FIG. 5 is an enlarged view of the portion A of FIG. 3 where the joint between the side circumference of the riveting boss and the inner wall of the base plate is at a right angle;

FIG. 6 is a schematic view of the present invention for a street light luminaire housing;

FIG. 7 is an enlarged view of the portion A of the riveting boss shown in FIG. 3, which has a transition arc α at the joint between the side periphery of the riveting boss and the inner wall of the bottom plate;

fig. 8 is an enlarged view of an obvious gap with a distance h3 between the lamp panel 1 and the housing bottom plate 2 when the radius r of a transition arc α at the joint of the side circumference of the riveting boss and the inner wall of the bottom plate is greater than 0.3 mm;

FIG. 9 is a schematic view of the lamp panel mounted to the housing of the present invention;

fig. 10 is a schematic top view of the riveting boss 4 having a circular, quadrangular, hexagonal cross section, respectively, where L is the maximum diagonal length;

in the figure: 1 is a lamp panel; 2 is a bottom plate; 3 is a side wall; 4 is a riveting boss; 5 is a blind hole; 6 is an eversion connecting part; and 7, a shell bracket.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

Example 1:

as shown in fig. 1, 3, 5, 7, 8 and 10, the housing of the lamp according to embodiment 1 of the present invention is formed by stamping and stretching and is integrally formed with a bottom plate 2 and a side wall 3, the bottom plate 2 is provided with a plurality of riveting bosses 4 formed integrally with the bottom plate 2, and the riveting bosses 4 protrude into the housing, so that a blind hole corresponding to the riveting boss 4 is formed when viewed from the outside of the housing. A plurality of riveting boss 4 establish different quantity's riveting boss 4 according to the size of casing, and riveting boss 4 is used for the location or the riveting of lamp plate 1, or both plays the effect of location and also plays the effect of riveting. In the specific implementation, the riveting boss 4 can have different shapes, the common cylinder is adopted in the embodiment, the cross section of the riveting boss 4 is circular, the maximum diagonal length L of the cross section of the riveting boss 4 is the diameter of the circle, the maximum diagonal length L is controlled to be 2.0 mm-4.0 mm, and the embodiment selects 2.8 mm. The height of the riveting boss 4 is 0.9mm, which is smaller than the thickness of the bottom plate 2 by 1.0 mm. Under this size, can guarantee smooth processing and good riveting effect of riveting boss 4, and the side of riveting boss 4 is global perpendicular with 2 inner walls of bottom plate, the two department of combining is the right angle, therefore when lamp plate 1 through the through-hole (the through-hole diameter on lamp plate 1 slightly is greater than the diameter of riveting boss 4 circular cross section) riveting on the riveting boss above that, lamp plate 1 can almost not have the bottom plate of obstacle and the casing closely laminate, like this, the heat that lamp plate 1 produced in work will directly conduct the bottom plate to the casing and carry out effectual heat dissipation, and simultaneously, the laminating of lamp plate 1 makes the installation compacter on the bottom plate of casing, it is convenient, lamp plate 1 can not become flexible. When the cross section of the riveting boss 4 is square or has other geometrical shapes, such as square, the maximum diagonal length of the cross section of the riveting boss 4 is between 2.0mm and 4.0 mm. In embodiment 1, a bottomed container comprising a bottom plate 2 and a side wall 3 is formed by a press-drawing process, and in a concrete production process, the stepped bottom plate 2 and the stepped side wall 3 are formed, that is, a step drawing process is performed, and then a caulking boss 4 is formed by a press-drawing process,

when the small lamp panel 1 is installed on the lamp body shell, the lamp panel 1 and the riveting boss 4 are directly matched and riveted to complete positioning and fixing, namely the riveting boss 4 can play two roles of positioning and riveting and fixing, and the mode enables the lamp panel 1 to be installed on the lamp body shell very simply and conveniently, and meanwhile has a good heat dissipation effect, high production efficiency and high installation and processing efficiency;

the shell is made of an AL-1060 pure aluminum plate, and has the advantage of excellent processing performance.

Example 2:

as shown in fig. 3, 4, 5, 6 and 9, the present embodiment is different from embodiment 1 in that: the bottom plate 2 is also provided with a plurality of blind holes 5, the hole diameter of each blind hole 5 is phi 2.2 mm-phi 3.2mm, and the preferred diameter of the blind hole is 2.6 mm; the hole depth of the blind hole 5 is not less than 2.9mm, and the preferred embodiment is 3.5 mm. The blind holes 5 are used for fixing the lamp panel 1; blind hole 5 passes through punching press stretch forming, when being applied to the installation of large-scale lamp plate 1, only fixes to lamp plate 1 through riveting boss 4 and exists the possibility of droing, consequently a plurality of blind holes 5 of punching press stretch forming on bottom plate 2, the quantity of blind hole 5 is according to the big or small decision of casing, accomplishes location and preliminary fixed back with lamp plate 1 and the cooperation riveting of riveting boss 4, then further installs fixed lamp plate 1 through screw and blind hole again.

As shown in fig. 6, the housing of the present embodiment can be used for various LED lamps and common lamps such as street lamps.

Example 3:

as shown in fig. 1, fig. 2 and fig. 9, in embodiment 3, the base plate 2 is provided with an outward-turned connecting portion 6 formed integrally with the base plate 2 by punching, the outward-turned connecting portion 6 is provided on the integrally-formed side wall 3, the outward-turned connecting portion 6 is provided with a through hole, and the outward-turned connecting portion 6 is used for installing the shell bracket 7, that is, when the shell bracket needs to be installed, the outward-turned connecting portion 6 formed by flanging is used for installation.

The number of the outward turning connecting parts 6 is 2, and the 2 outward turning connecting parts 6 are oppositely arranged on two sides of the shell; the everting joint 6 is formed by press bending.

Example 4:

as shown in fig. 7, the present embodiment is different from embodiment 1 in that: the biggest diagonal length of 4 cross sections of riveting boss is 3.2mm its circular cross section's diameter promptly, and this moment, 4 side global of riveting boss with the combination department of 2 inner walls of bottom plate has transition circular arc alpha, and at this moment, circular arc alpha's radius will be enough little as far as possible, and the radius of its transition circular arc of this embodiment is 0.2mm, therefore transition circular arc alpha does not show to exist, and lamp plate 1 still can be the at utmost be close to the bottom plate of casing, and the influence that the heat dissipation of lamp plate 1 receives is little. As shown in fig. 8, if the radius of the circular arc is greater than 0.3mm, then transition circular arc α exists remarkably, so that the lamp panel 1 cannot be close to the inner wall of the bottom plate 2 of the housing sufficiently, thereby forming an obvious gap between the two, and the gap is h3, thus the heat dissipation of the lamp panel 1 is seriously affected, and the lamp panel 1 is easy to loosen after being mounted on the housing.

The above embodiments are only for illustrating the invention and are not to be construed as limiting the invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention, therefore, all equivalent technical solutions also belong to the scope of the invention, and the scope of the invention is defined by the claims.

Claims

1. The utility model provides a stamping forming's lamps and lanterns casing, includes bottom plate (2), its characterized in that, have stamping forming, inside bellied riveting boss (4) on bottom plate (2), riveting boss (4) are used for the location and/or the riveting of lamp plate to fix, the biggest diagonal length L of riveting boss (4) cross section is 2.0mm ~ 4.0mm, the height h1 of riveting boss (4) is not more than the thickness h2 of bottom plate (2); the joint of the side peripheral surface of the riveting boss (4) and the inner wall of the bottom plate (2) is provided with a transition circular arc alpha, and the radius r of the circular arc is not more than 0.3 mm;

the bottom plate (2) is also provided with a blind hole (5) which is formed by stamping and is convex outwards and used for fixing the lamp panel, and the diameter of the blind hole (5) is phi 2.2 mm-phi 3.2 mm.

2. The stamping and forming lamp housing according to claim 1, further comprising an outward-turning connecting part (6) which is located at the periphery of the bottom plate (2) and is integrally stamped and formed with the bottom plate (2), wherein a through hole is formed in the outward-turning connecting part (6).

3. Stamped and formed lamp housing according to claim 2, characterized in that the everting connections (6) are present in 2, 2 of the everting connections (6) being arranged opposite each other on both sides of the base plate (2).

4. The stamped and formed lamp housing according to claim 1, wherein the housing is made of pure aluminum.

5. The stamped light fixture housing of claim 1, wherein: the hole depth of the blind hole (5) is not less than 2.9 mm.