CROSS-REFERENCE TO RELATED APPLICATION
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The present application claims the priority of
China Patent Application No. 202321022937.X filed on April 28, 2023 , entitled "snap spring and lamp", which is incorporated herein by reference in its entirety.
TECHNICAL FIELD
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The present application relates to the technical field of lighting apparatus, in particular to a snap spring and a lamp.
BACKGROUND
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At present, there are various lighting fixtures on the market to meet the diverse needs of users. For example, as a decorative lamp, the downlight can create a good lighting effect for the home environment. Because it is embedded in the ceiling, it can give people a simple home improvement effect.
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An embedded lamp tube usually includes a housing, a light source assembly and a snap spring, the light source assembly is arranged in the housing, and the snap spring is arranged on the side wall of the housing. The ceiling is provided with a mounting hole adapted to the lamp tube. During installation, the snap spring is manually gathered upward toward the housing, so that the upper end of the lamp tube penetrates into the mounting hole, and then the snap spring is released, so that the lamp tube can be hung on the ceiling, and the ceiling is clamped between the snap spring and the housing.
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In practical application, because the snap spring protrudes from the side wall of the housing, it is easy for the snap spring to interfere with the periphery of the mounting hole during the maintenance and disassembly of the lamp tube, so it is stuck on the upper surface of the ceiling, which makes it difficult or even impossible to disassemble the lamp tube.
SUMMARY
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The present application provides a snap spring and a lamp, which are used to at least solve the problem that the lamp is difficult to disassemble, which is caused by that the snap spring of the lamp in the prior art is easy to interfere with the mounting foundation.
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The technical scheme of the present application provides a snap spring, which includes:
- a rotating shaft adapted to be connected with the housing;
- a torsion spring sleeved on the rotating shaft;
- a plate buckle including a body portion and a connecting portion which are connected with each other, the connecting portion being rotatably connected with the rotating shaft, the body portion being provided with a first side surface and a second side surface which are opposite to each other, an end of the second side surface close to the rotating shaft being connected with a guide surface, the guide surface being inclined from the second side surface to a side where the first side surface is located;
- in a case that the snap spring is assembled with the housing, one elastic end of the torsion spring abuts against the first side surface, and the plate buckle is elastically connected with the housing through the torsion spring.
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Optionally, an end of the body portion close to the rotating shaft is provided with a first bending portion, and the guide surface is formed at the first bending portion.
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Optionally, two connecting portions are arranged on both sides of the body portion in a longitudinal direction, the first bending portion is located between the two connecting portions, and the first bending portion is arranged at intervals with at least one connecting portion in a width direction of the body portion.
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Optionally, the plate buckle is a sheet metal structural member.
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Optionally, the connecting portion includes a base portion and an extension portion which are connected with each other, the base portion is arranged at the first side surface and protrudes from the first side surface, and the extension portion extends from the base portion along a length direction of the body portion to be rotatably connected with the rotating shaft.
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Optionally, a fixing bracket is provided, the fixing bracket is adapted to be connected with the housing through a fixing piece, and the rotating shaft is connected with the housing through the fixing bracket; in a case that the snap spring is assembled with the housing, the other elastic end of the torsion spring abuts against the fixing bracket.
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Optionally, the fixing bracket is provided with a bracket through hole for the fixing piece to pass through, and a position of the body portion corresponding to the bracket through hole is provided with an avoidance groove.
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Optionally, the avoidance groove is an open groove with an opening facing the rotating shaft, and the body portion is provided with guide surfaces at positions corresponding to both sides of the open groove.
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The technical scheme of the present application provides a lamp including:
- a housing;
- a snap spring, the snap spring being any one of the above mentioned snap springs, the rotating shaft is connected with a side wall of the housing, and the plate buckle is elastically connected with the side wall through the torsion spring; in a case that the lamp is assembled with a mounting foundation, the mounting foundation being clamped between the plate buckle and the housing.
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Optionally, a fixing bracket is fixedly connected to the side wall, one elastic end of the torsion spring abuts against the first side surface, and the other elastic end of the torsion spring abuts against the fixing bracket.
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According to the snap spring and the lamp provided by the present application, the guide surface is connected to one end of the second side surface of the plate buckle close to the rotating shaft, when the lamp is disassembled, the hole wall of the mounting hole first contacts with the guide surface to squeeze the plate buckle, and because the guide surface is inclined from the second side surface of the plate buckle to the side where the first side surface is located, the hole wall of the mounting hole can transition from the guide surface to the second side surface during the outward movement of the lamp relative to the mounting hole, so as to avoid structural interference between the plate buckle and the mounting foundation. The plate buckles can be smoothly gathered to the tail end of the lamp under the squeezing force of the hole wall of the mounting hole, so as to smoothly pass through the mounting hole to complete the disassembly. The lamp with the snap spring of this embodiment can adapt to the mounting hole with smaller size under the condition of convenient disassembly, so that the mounting structure is more stable.
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Furthermore, the lamp provided by the present application has the snap spring as described above, so it also has various advantages as described above.
BRIEF DESCRIPTION OF DRAWINGS
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In order to explain the technical scheme in the present application or the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application. For ordinary people in the field, other drawings can be obtained according to these drawings without creative work.
- Fig. 1 is one of the structural schematic diagrams of the snap spring provided by an embodiment of the present application;
- Fig. 2 is a structural schematic diagram of a plate buckle of the snap spring provided by the embodiment of the present application;
- Fig. 3 is the second structural schematic diagram of the snap spring provided by the embodiment of the present application;
- Fig. 4 is an exploded structural schematic diagram of the snap spring in Fig. 3;
- Fig. 5 is one of the schematic diagrams of the disassembly process of the lamp provided by the embodiment of the present application;
- Fig. 6 is the second schematic diagram of the disassembly process of the lamp provided by the embodiment of the present application;
- Fig. 7 is a partial enlarged view of part A in Fig. 6;
- Fig. 8 is the third schematic diagram of the disassembly process of the lamp provided by the embodiment of the present application;
- Fig. 9 is the fourth schematic diagram of the installation process of the lamp provided by the embodiment of the present application;
Reference numeral:
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- 100. snap spring; 11. Rotating shaft;
- 12. torsion spring; 121. elastic end;
- 13. plate buckle; 1301. first side surface; 1302. second side surface; 1303. guide surface;
- 131. body portion; 1311. first bending portion; 1312. avoidance groove; 1313. second bending portion;
- 132. connecting portion; 1321. base portion; 13211. inclined edge; 1322. extension portion; 13221. connecting hole;
- 14. fixing bracket; 141. bracket through hole;
- 200. housing; 21. front housing; 22. back cover;
- 300. mounting foundation; 31. mounting hole.
DETAILED DESCRIPTION
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In order to make the purpose, technical scheme and advantages of the present application more clearly, the technical scheme in the present application will be described clearly and completely with the attached drawings. Obviously, the described embodiments are part of the embodiments, not all embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary people in this field without creative work belong to the protection scope of the present application.
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In the description of the embodiment of the present application, it should be noted that unless otherwise specified and limited, the terms "first" and "second" are used to clearly explain the numbering of product components and do not represent any substantive difference. The directions of "up", "down", "left" and "right" are subject to the directions shown in the attached drawings. For those skilled in the art, the specific meanings of the above terms in this embodiment can be understood according to the specific situation.
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In the description of the embodiment of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connected" and "connection" should be broadly understood, for example, they can be fixed connection, detachable connection or integrated connection; they can be directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood in specific situations.
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Hereinafter, the snap spring and the lamp according to the embodiment of the present application will be described with reference to Figs. 1 to 9.
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As shown in Fig. 5, the embodiment of the present application provides a snap spring 100, which is used to be assembled on a housing 200 of a lamp.
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As shown in Figs. 1, 2 and 4, the snap spring 100 includes a rotating shaft 11, a torsion spring 12, and a plate buckle 13.
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The rotating shaft 11 is adapted to be connected with the housing 200.
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The torsion spring 12 is sleeved on the rotating shaft 11.
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The plate buckle 13 includes a body portion 131 and a connecting portion 132 which are connected with each other.
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The connecting portion 132 is rotatably connected with the rotating shaft 11. The body portion 131 has a first side surface 1301 and a second side surface 1302 which are opposite to each other. One end of the second side surface 1302 close to the rotating shaft 11 is connected with a guide surface 1303 which is inclined from the second side surface 1302 to the side where the first side surface 1301 is located.
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In the case where the snap spring 100 is assembled with the housing 200, an elastic end 121 of the torsion spring 12 abuts against the first side surface 1301, and the plate buckle 13 is elastically connected to the housing 200 through the torsion spring 12.
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Specifically, when the snap spring 100 and the housing 200 are in assembled and connected state, an elastic end 121 of the snap spring 100 abuts against the first side surface 1301 of the plate buckle 13, so as to apply a torsion force to the plate buckle 13 and make the plate buckle 13 rotate away from the head end of the lamp (i.e., the lower end of the lamp shown in Fig. 5) to unfold.
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In this embodiment, the rotating shaft 11 is directly connected to the housing 200, so that the other elastic end 121 of the torsion spring 12 directly abuts against the housing 200.
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In some other embodiments, the rotating shaft 11 is connected to the housing 200 through other intermediate structural member, and the other elastic end 121 of the torsion spring 12 abuts against the intermediate structural member, so that the plate buckle 13 is elastically connected to the housing 200.
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In the process of assembling and disassembling the lamp, the body portion 131 of the plate buckle 13 and the hole wall of the mounting hole 31 on the mounting foundation 300 will be pressed against each other.
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When the lamp is installed, the plate buckle 13 is pushed by an external force to resist the torsion force of the torsion spring 12, so that the plate buckles 13 rotate to gather towards the tail end of the lamp (i.e. the upper end of the lamp shown in Fig. 5), so that the snap spring 100 can pass through the mounting hole 31. After the snap spring 100 passes through the mounting hole 31, the external force is removed, and the plate buckles 13 rotates and unfolds toward the head end of the lamp under the torsion force of the torsion spring 12, so that the lamp is hung on the mounting foundation 300, and it is not easy to fall off under the action of the snap spring 100.
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The lamp and mounting foundation 300 (such as ceiling) in the assembled state are shown in Fig. 5.
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The process of disassembling the lamp is shown in Fig. 6, Fig. 8 and Fig. 9. Specifically, by pulling the lamp downward, the plate buckles 13 will resist the torsion force of the torsion spring 12 under the reverse force of the mounting foundation 300 to rotate to gather towards the tail end of the lamp. During the gathering process, the hole wall of the mounting hole 31 will be pressed against the plate buckle 13. At the beginning of the extrusion between the hole wall and the plate buckle 13, as shown in Fig. 7, the hole wall of the mounting hole 31 first contacts with the guide surface 1303, and then slides to the second side surface 1302 along the guide surface 1303, so that the plate buckles 13 can continue to be gathered and smoothly pass through the mounting hole 31, thus successfully completing the disassembly.
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In the snap spring 100 provided by this embodiment, the guide surface 1303 is connected to the end of the second side surface 1302 of the plate buckle 13 close to the rotating shaft 11. When the lamp is disassembled, the hole wall of the mounting hole 31 first contacts the guide surface 1303 to press against the plate buckle 13. Because the guide surface 1303 is inclined from the second side surface 1302 of the plate buckle 13 to the side where the first side surface 1301 is located, during the outward movement of the lamp relative to the mounting hole 31, the hole wall of the mounting hole 31 can transition from the guide surface 1303 to the second side surface 1302 to avoid structural interference between the plate buckle 13 and the mounting foundation 300. The plate buckles 13 can be smoothly gathered to the tail end of the lamp under the squeezing force of the hole wall of the mounting hole 31 so as to smoothly pass through the mounting hole 31 to complete the disassembly. The lamp with the snap spring 100 of this embodiment can be adapted to the mounting hole 31 with smaller size under the condition of convenient disassembly, so that the mounting structure is more stable.
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In some alternative embodiments, a rounded corner is provided at the connection between the guide surface 1303 and the second side surface 1302, so that the hole wall of the mounting hole 31 can smoothly transition from the guide surface 1303 to the second side surface 1302.
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As shown in Fig. 2, in some alternative embodiments, the end of the body portion 131 close to the rotating shaft 11 is provided with a first bending portion 1311, and the guide surface 1303 is formed at the first bending portion 1311. It can be understood that the first bending portion 1311 is bent from the second side surface 1302 toward the first side surface 1301.
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The plate buckle 13 is a sheet metal structural component, that is, the body portion 131 and the connecting portion 132 of the plate buckle 13 are of an integrated sheet metal structure. The first bending portion 1311 can be formed by bending the end of the body portion 131 close to the rotating shaft 11 to the side where the first side surface 1301 is located through a stamping process. Compared with the related art in which one elastic end 121 of the coil spring 2 is extended to form a plate buckle, the plate buckle 13 of the sheet metal structure of this embodiment has higher strength and texture.
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The plate buckle 13 can also be a plate-shaped member with non-sheet metal structure, such as a casting member, which can be formed by die casting. In this embodiment, the guide surface 1303 can be realized by the bending structure of the plate body; it can also be achieved by changing the thickness of the plate body, that is, the thickness of the end of the body portion 131 close to the rotating shaft 11 gradually decreases in the direction towards the rotating shaft 11.
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As shown in Fig. 2, in this embodiment, two connecting portions 132 are located on both sides of the body portion 131 in the longitudinal direction, and the first bending portion 1311 is located between the two connecting portions 132. In the width direction of the body portion 131, the first bending portion 1311 and at least one connecting portion 132 are arranged at intervals. The width direction of the body portion 131 is consistent with the length direction of the rotating shaft 11, and the length direction of the body portion 131 is perpendicular to the length direction of the rotating shaft 11.
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Specifically, the two connecting portions 132 are rotatably connected to both ends of the rotating shaft 11 in the longitudinal direction. In the width direction of the body portion 131, the first bending portion 1311 and one of the connecting portions 132 are arranged at intervals, that is, there is a gap between the connecting portion 132 and the first bending portion 1311. When the snap spring 100 and the housing 200 are in assembled and connected state, the elastic end 121 of the torsion spring 12 for abutting against the first side surface 1301 can be accommodated in the gap to stably abut against the first side surface 1301 of the body portion 131. In this way, the structure of the elastic end 121 of the torsion spring 12 can be simplified.
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When the first bending portion 1311 and the two connecting portions 132 are arranged at intervals, respectively, gaps are provided between the two connecting portions 132 and the first bending portion 1311 respectively. The elastic end 121 of the torsion spring 12 for abutting against the first side surface 1301 can be accommodated in any one of the gaps, which is convenient for foolproof in production.
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As shown in Fig. 2, in this embodiment, the connecting portion 132 is connected to the first side surface 1301 of the plate buckle 13 and extends along the length direction of the plate buckle 13 to connect with the rotating shaft 11. That is, in the longitudinal direction of the plate buckle 13, the guide surface 1303 corresponds to the middle section of the connecting portion 132. Moreover, in the thickness direction of the plate buckle 13, the position of the connecting portion 132 corresponding to the guide surface 1303 does not exceed the guide surface 1303, thus ensuring that the connecting portion 132 and the mounting foundation 300 will not interfere with each other in the process of sliding contact between the guide surface 1303 and the mounting foundation 300 when the lamp is disassembled.
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In the case that the plate buckle 13 is a sheet metal structural member, both sides of the body portion 131 in the longitudinal direction are bent to the side where the first side surface 1301 is located, respectively, to form two connecting portions 132.
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Specifically, referring to Fig. 1, the connecting portion 132 includes a base portion 1321 and an extension portion 1322 which are connected with each other. The base portion 1321 is arranged at the first side surface 1301 and protrudes from the first side surface 1301, and the extension portion 1322 extends from the base portion 1321 along the length direction of the body portion 131 to be rotatably connected with the rotating shaft 11.
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It can be understood that the side edge of one end of the connecting portion 132 is fixedly connected with the first side surface 1301 of the body portion 131, and the other end of the connecting portion 132 extends along the length direction of the body portion 131. In order to avoid structural interference between the connecting portion 132 and the mounting foundation 300, the base portion 1321 is arranged at and protrudes from the first side surface 1301 of the body portion 131, and connected with the rotating shaft 11 through the extension portion 1322. The guide surface 1303 corresponds to the part of the extension portion 1322 close to the base portion 1321, and this part of the extension portion 1322 close to the base portion 1321 does not exceed the guide surface 1303 in the thickness direction of the body portion 131, thus avoiding the structural interference between the extension portion 1322 and the mounting foundation 300 during the sliding contact between the guide surface 1303 and the mounting foundation 300.
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One end of the extension portion 1322 far away from the base portion 1321 is provided with a connecting hole 13221, and the plate buckle 13 is connected with the rotating shaft 11 through the connecting hole 13221. In this embodiment, the rotating shaft 11 and the extension portion 1322 can be tightly connected by riveting to prevent the rotating shaft 11 from loosening relative to the plate buckle 13.
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Due to the need of structural strength, the end size of the extension portion 1322 corresponding to the connecting hole 13221 is larger than other positions. To facilitate the disassembly of the lamp, the end of the extension portion 1322 corresponding to the end edge of the connecting hole 13221 is set in an arc shape. When disassembling the lamp, the arc-shaped end of the extension portion 1322 is beneficial for the mounting foundation 300 to reach the guide surface 1303 smoothly.
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In this embodiment, the first bending portion 1311 is formed by bending one end of the body portion 131 in the longitudinal direction, and the connecting portion 132 is formed by bending two sides of the body portion 131 in the longitudinal direction. This structure is easy to realize by stamping process, and the snap spring 100 can have a suitable initial opening and closing angle, which is convenient for the assembly of the snap spring 100 and the housing 200 and the use of lamps.
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Further, referring to Fig. 2, the base portion 1321 is provided with an inclined edge 13211, and the inclined edge 13211 extends obliquely from one end of the base portion 1321 far away from the extension portion 1322 to the direction of the extension portion 1322, so that the weight of the plate buckle 13 can be reduced on the basis of ensuring sufficient connection strength between the connecting portion 132 and the body portion 131, thereby reducing the weight of the snap spring 100 and the lamp.
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As shown in Fig. 3, the snap spring 100 provided by this embodiment further includes a fixing bracket 14, and the fixing bracket 14 is adapted to be connected with the housing 200 through a fixing piece. The rotating shaft 11 is connected with the housing 200 through the fixing bracket 14. In the case that the snap spring 100 is assembled with the housing 200, the other elastic end 121 of the torsion spring 12 abuts against the fixing bracket 14.
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It can be understood that the position of one elastic end 121 of the torsion spring 2 is limited to the first side surface 1301, and the position of the other elastic end 121 is limited to the fixing bracket 14. The two elastic ends 121 act on the plate buckle 13 and the fixing bracket 14, respectively, so that the plate buckle 13 is subjected to a force approaching to the fixing bracket 14.
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It should be noted that when the snap spring 100 does not include the fixing bracket 14, the housing 200 needs to be provided with a mounting structure rotatably connected with the rotating shaft 11, and the position of the other elastic end 121 of the torsion spring 12 is limited by the housing 200.
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In this embodiment, the snap spring 100 with the fixing bracket 14 is provided, by using the fixing bracket 14 to limit the position of the other elastic end 121 of the torsion spring 12, and is connected with the housing 200 through the fixing bracket 14. Compared with the way that the rotating shaft 11 is directly connected with the housing 200, the structure of the housing 200 adapted to the snap spring 100 in this embodiment is simpler, and the corresponding production mold structure is simpler, and the assembly of the snap spring 100 and the housing 200 is easier, which is beneficial to production automation.
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Continue to refer to Figs. 1 and 3, in this embodiment, the fixing bracket 14 is provided with a bracket through hole 141 through which the fixing piece passes, and the body portion 131 is provided with an avoidance groove 1312 at the position corresponding to the bracket through hole 141. The avoidance groove 1312 is used to provide structural avoidance for the fixing piece. The avoidance groove 1312 can be a through hole or an open groove with an opening facing the rotating shaft 11, such as the U-shaped groove shown in Fig. 1. The avoidance groove 1312 in the form of open groove is easier to process and saves sheet material.
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When the avoidance groove 1312 is a through hole, a wider guide surface 1303 can be set along the width direction of the body portion 131, so that the first bending portion 1311 has higher structural strength. When the avoidance groove 1312 is an open groove, the body portion 131 is provided with guide surfaces 1303 at positions corresponding to both sides of the open groove, that is, each of both sides of the open groove is provided with one first bending portion 1311.
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In this embodiment, the end of the body portion 131 far away from the rotating shaft 11 is provided with a second bending portion 1313, and the second bending portion 1313 is bent to the side where the first side surface 1301 of the body portion 131 is located, so that the second side surface 1302 of the body portion 131 forms a bending plane or an arc surface. When the lamp is assembled with the ceiling, the snap spring 100 contacts the ceiling through the bending plane or arc surface, which can reduce the stress on the ceiling applied by the plate buckle 13 and avoid damage to the ceiling.
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The embodiment of the present application further provides a lamp, as shown in Fig. 5, which includes a housing 200 and a snap spring 100.
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In the lamp, the snap spring 100 is the snap spring 100 according to any of the above-mentioned embodiments, which is not repeated here.
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The rotating shaft 11 is connected with the side wall of the housing 200, and the plate buckle 13 is elastically connected with the side wall of the housing 200 through the torsion spring 12.
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The plate buckle 13 has a first position and a second position relative to the side wall of the housing 200, and the plate buckle 13 can be switched from the second position to the first position under the force of the torsion spring 12. In the case that the lamp is assembled with the mounting foundation 300, the mounting foundation 300 is clamped between the plate buckle 13 and the housing 200.
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Specifically, the housing 200 includes a front housing 21 and a rear cover 22, and the front housing 21 and the rear cover 22 are buckled and connected to form an accommodating cavity for accommodating the light source assembly. The rotating shaft 11 is connected with the side wall of the rear cover 22, and the plate buckle 13 is elastically connected with the side wall of the rear cover 22 through the torsion spring 12. The size of the front housing 21 is larger than that of the mounting hole 31. In the case that the lamp is assembled with the mounting foundation 300, the front housing 21 acts as a position limiting member to clamp the mounting foundation 300 between the plate buckle 13 and the front housing 21.
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It should be noted that this embodiment is only a schematic example of the structure of the housing 200, and the housing 200 is not limited to the structure described in this embodiment.
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Pull the plate buckle 13 to the tail end of the lamp by manual external force, so that the plate buckles 13 are gathered to the extreme position. At this time, the plate buckle 13 is in the second position relative to the housing 200, which can at least ensure that the plate buckle 13 passes through the mounting hole 31. When the external force on the plate buckle 13 is removed, the plate buckle 13 moves towards the first position under the action of the torsion spring 12 and resumes unfolding. After the lamp is assembled with the mounting foundation 300, the plate buckle 13 is located between the first position and the second position.
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Each of the two opposite sides of the housing 200 is provided with one snap spring 100, and the lamp is stably hung on the mounting foundation 300 through two snap springs 100. Of course, the number of snap springs 100 can be set as required, for example, three snap springs 100 with an angle of 120 degrees are set around the side wall of the housing 200.
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Further, the fixing bracket 14 is fixedly connected to the side wall of the housing 200, and one elastic end 121 of the torsion spring 12 abuts against the first side surface 1301, and the other elastic end 121 of the torsion spring 12 abuts against the fixing bracket 14.
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The fixing bracket 14 can be assembled with the rotating shaft 11, the torsion spring 12 and the plate buckle 13 in advance to form an integral snap spring structure, as shown in Fig. 3, and then the fixing bracket 14 can be fixedly connected with the housing 200 through a fastener. This can make the assembly of the snap spring 100 and the housing 200 more convenient, which is conducive to the realization of production automation, and can also simplify the structure of the housing 200 and facilitate the die casting of the housing 200.
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Finally, it should be explained that the above embodiments are only used to illustrate, but not to limit the technical scheme of the present embodiment. Although this embodiment has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that they can still modify the technical solutions recorded in the foregoing embodiments or replace some technical features with equivalents. However, these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of each embodiment of this embodiment.