Light guide structure and protector

Abstract

The utility model belongs to the technical field of low-voltage electric appliances, and discloses a light guide structure and a protector. The light guide structure is used for guiding out light of a plurality of patch light sources of the protector, the patch light sources are attached to a circuit board of the protector, and the light guide structure comprises a base and a light guide part; the light guide part comprises a plurality of light guide heads and light guide columns in one-to-one correspondence with the light guide heads; the light guide columns are in one-to-one correspondence with the patch light sources, so that light emitted by the corresponding patch light sources is guided out through the light guide columns; the plurality of light guide heads are used for being matched with a plurality of light leakage holes in a panel of the protector in a one-to-one correspondence manner; the light guide structure further comprises a plurality of supporting columns, the supporting columns are connected to the bottom of the base at intervals of the light guide columns, and the distance between the bottom ends of the supporting columns and the circuit board is larger than that between the bottom ends of the light guide columns and the circuit board. According to the utility model, the problems of sinking and deformation of the indicating lamp of the protector are solved, and the stability of the light guide structure is improved.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, in particular to a light guide structure and a protector. Background Art

[0002] Protectors, especially phase failure and phase sequence protectors, usually use plug-in LED lights as indicator lights. The installation of plug-in LEDs requires a relatively complicated installation process, including folding legs, plug-in, and welding lights. The processing technology is complex and the cost is high. During the transportation of the protector, unnecessary collisions and extrusions can easily cause the indicator lights to sink or deform.

[0003] The light guide column indicates the protector status by directing the light emitted by the LED lamp to the protector panel. However, the existing light guide column still has difficulty in resolving the indication failure caused by the displacement of the light guide column due to the distortion and deformation when the protector is impacted. Utility Model Content

[0004] In view of the above technical problems, the utility model provides a light guide structure and a protector to solve the problems of sinking and deformation of the indicator light of the protector, thereby improving the stability of the light guide structure.

[0005] The utility model provides a light guide structure in a first aspect for guiding light out of a plurality of patch light sources of a protector, wherein the plurality of patch light sources are attached to a circuit board of the protector, and the light guide structure comprises a base and a light guide portion;

[0006] The light guide part includes a plurality of light guide heads and light guide columns corresponding to the plurality of light guide heads one by one; the plurality of light guide columns correspond to the plurality of patch light sources one by one, so as to guide the light emitted by the corresponding patch light sources through the light guide columns; the plurality of light guide heads are used to cooperate with the plurality of light leakage holes on the panel of the protector one by one;

[0007] The light-guiding structure further comprises a plurality of supporting columns, wherein the plurality of supporting columns are connected to the bottom of the base with the light-guiding columns spaced apart, wherein the distance from the bottom end of the supporting columns to the circuit board is greater than the distance from the bottom end of the light-guiding columns to the circuit board.

[0008] In some embodiments, the side wall of the light guide head is provided with a plurality of ribs arranged at intervals for interference fit with the light leakage hole.

[0009] In some embodiments, it also includes:

[0010] The blocking member is arranged between two adjacent light guiding parts.

[0011] In some embodiments, the base is provided with a through hole, the through hole is provided between two adjacent light guide portions, and the blocking member is inserted into the through hole.

[0012] In some embodiments, the support column and the substrate are integrally formed, and the blocking member is independently disposed relative to the light guide structure.

[0013] In some embodiments, the support column includes two support legs, the two support legs are oppositely arranged on two sides of the corresponding through hole, and the blocking member is at least partially sandwiched between the two corresponding support legs;

[0014] The blocking member and the corresponding two supporting legs form an integral structure that is spaced apart from the light guiding portion.

[0015] In some embodiments, the barrier is an I-shaped structure.

[0016] In some embodiments, the bottom end of the barrier is flush with the bottom end of the support column.

[0017] The second aspect of the utility model provides a protector, including a circuit board, a plurality of patch light sources and a panel attached to the circuit board; and also includes the light guide structure described in any of the above items, wherein the panel is provided with a plurality of light leakage holes for one-to-one matching with the plurality of light guide heads of the light guide structure.

[0018] In some embodiments, the panel is integrally formed with the barrier.

[0019] The technical solution provided by the embodiment of the utility model accurately displays the current state of the protector by setting a light guide structure corresponding to the patch light source, and has simple assembly, low cost, and high consistency. The utility model sets a support column in the light guide structure that is closer to the gap between the light guide column and the circuit board. When the light guide structure is subjected to external impact, the support column first contacts the circuit board, effectively avoiding unnecessary sinking and deformation of the light guide column. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a light guide structure provided by the utility model;

[0021] Figure 2 A schematic diagram of the light guide structure provided by the utility model in a protector;

[0022] Figure 3 A schematic diagram of a circuit board associated with a light guide structure provided by the utility model;

[0023] Figure 4 A schematic diagram of a panel associated with a light guide structure provided by the utility model;

[0024] Figure 5 The present invention is a schematic diagram of a protector provided by the present invention.

[0025] Reference numerals:

[0026] Light guide structure 100, base 110, light guide part 120, support column 130, through hole 111, light guide head 121, light guide column 122, rib 1210;

[0027] Circuit board 200, patch light source 210;

[0028] The panel 300 , the light leakage hole 310 , and the blocking member 320 . DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0030] It should be noted that the following embodiments can be combined if there is no conflict.

[0031] The protector is a device that provides electrical safety protection for electrical appliances. The accurate indication of the phase failure and phase sequence protector is the basis for avoiding damage to electrical components and further adjusting faults. Existing phase failure and phase sequence protectors use plug-in light sources, such as plug-in LED lights. The installation of plug-in light sources requires three processes: cornering, plug-in, and welding. There are difficulties in processing and high processing costs. The plug-in light source is easily damaged during turnover and transportation, resulting in deformation, displacement, and sinking of the light source.

[0032] In order to solve the technical problems in the protector of the prior art that the installation process of the indicating light source is complicated, and it is easy to deform and move, resulting in indication errors, etc., the embodiment of the utility model provides a light-guiding structure. By setting a light-guiding column corresponding to the light source and a supporting column alternately arranged with the light-guiding column, and the gap between the supporting column and the circuit board is smaller than the gap between the light-guiding column and the circuit board, the risk of the light-guiding column being squeezed, deformed, or sunken is effectively avoided, thereby improving the accuracy of the protector's indication.

[0033] Figure 1 For a schematic diagram of a light guide structure provided by the utility model, please refer to Figure 1 The light guide structure 100 provided in this embodiment includes a base 110, a light guide portion 120, and a plurality of support columns 130. The light guide portion 120 includes a plurality of light guide heads 121 and a plurality of light guide columns 122 corresponding to the light guide heads 121. Each light guide head 121 is disposed at the top end of the corresponding light guide column 122 and is exposed outside the upper surface of the base 110. Each light guide column 122 is inserted into the base 110, and the plurality of light guide columns 122 are arranged at intervals.

[0034] The light guide head 121 serves as the indicating end of the optical signal, and is used to indicate the status of the protector, such as the working status. The light guide head 121 is usually made of a transparent optical material, and can specifically be made of resin or glass, or colored resin or glass, such as red transparent polycarbonate. It is understandable that the light guide head 121 can also be made of other light-transmitting materials. The material of the light guide column 122 can be consistent with that of the light guide head 121, or it can be made of different light-transmitting materials. In addition, the light guide column 122 and the light guide head 121 can be integrally injection molded, or they can be separately arranged. Those skilled in the art can also shape by cutting or other methods, which are not specifically limited here.

[0035] Among them, multiple support columns 130 of the light-guiding structure 100 are connected to the bottom of the base 110 at intervals, and the support columns 130 and the light-guiding columns 122 are arranged alternately, and the bottom ends of the support columns 130 are lower than the bottom ends of the light-guiding columns 122, so that when the light-guiding structure 100 is squeezed and deformed and sinks, the support columns 130 touch the bottom first to prevent the light-guiding columns 122 from sinking further, thereby improving the stability of the light-guiding structure.

[0036] Figure 2 This is a schematic diagram of the light guide structure provided by the utility model in the protector. Figure 3 A schematic diagram of a circuit board associated with a light guide structure provided by the utility model, Figure 4 This is a schematic diagram of a panel associated with a light guide structure provided by the present invention. Figure 2-Figure 4 The light guide structure 100 is located between the circuit board 200 of the protector and the panel 300. A plurality of patch light sources 210 are attached to the circuit board 200 of the protector, and a plurality of light guide columns 122 on the light guide structure 100 correspond one-to-one to a plurality of patch light sources 210 located on the circuit board 200. The plurality of light guide heads 121 on the light guide structure 110 are used to correspond one-to-one to a plurality of light leakage holes 310 located on the panel 300 of the protector, so as to position the light guide structure 100 on the panel 300.

[0037] There is a gap between the bottom end of the support column 130 and the circuit board 200 , so that there is a certain buffer between the support column 130 and the circuit board 200 , thereby preventing a small pressure disturbance from causing unnecessary impact on the circuit board 200 .

[0038] When the light guide structure 100 is installed on the panel 300 of the protector, the distance from the bottom end of the support column 130 to the circuit board 300 is greater than the distance from the bottom end of the light guide column 122 to the circuit board 300, the bottom end of the light guide column 122 is directly opposite to the corresponding patch light source 210 on the circuit board 200, and the bottom end of the light guide column 122 is spaced apart from the corresponding patch light source 210 so as to guide the light emitted by the corresponding patch light source 210 through the light guide column 122.

[0039] It is understood that the shape of the support column 130 can be as follows: Figure 1 The rectangular parallelepiped shown in the figure, combined with the spatial position occupied by the support column and the convenience of process processing, can design and select other shapes for the cross section of the support column 130, such as a cylindrical support column, a variable prism support column, etc.

[0040] In the embodiment of the utility model, by setting light guide columns 122 corresponding to the patch light sources 210 and support columns 130 alternately set with the light guide columns 122, the patch light sources 210 can be accurately transmitted to the light guide head 121 through the corresponding light guide columns 122, and the current state of the protector can be accurately displayed.

[0041] When the light guide structure 100 is subjected to external impact, since the gap between the support column 130 and the circuit board 200 is smaller than the gap between the light guide column 122 and the circuit board 200, the support column 130 first acts on the circuit board 200 to prevent the light guide column 122 from being greatly deformed or sunken, and to prevent the light guide structure 100 from being loosened or even falling off from the panel 300 due to a large displacement, or from indicating interference caused by positioning defects due to unnecessary displacement. At the same time, the above structure can also effectively prevent the light guide column 122 from sinking due to external impact or extrusion and directly touching the patch light source 210, causing a malfunction. In addition, the light guide structure provided in this embodiment is simple to assemble, has low processing cost, high consistency and beautiful appearance, and effectively solves the problems of sinking and deformation of the light guide structure 100 while taking into account both process and cost.

[0042] Please also see Figure 4 The top side wall of the light guide head 121 is provided with a plurality of ribs 1210 arranged at intervals. When the light guide head 121 of the light guide structure 100 is pressed into the light leakage hole 310 of the panel 300, the ribs 1210 on the light guide head 121 are interference fit with the light leakage hole 310, thereby fixing the light guide structure 100 and the panel 300, preventing the light guide structure 100 from loosening and falling off from the panel 300, or preventing positioning defects caused by unnecessary displacement of the light guide structure 100 and the panel 300 during external impact or extrusion.

[0043] It should be understood that the connection between the light guide head 121 and the light leakage hole 310 is not limited to the above structure, and can also be set to other structures such as snap-fitting, limiting, etc. to achieve a stable fixed connection between the light guide structure 100 and the panel 300.

[0044] The light guide 120 is usually made of a transparent optical material, such as resin or glass, which has good light conductivity, so that the light emitted by the patch light source 210 still has a relatively obvious indication after being transmitted to the light guide head 121 through the light guide column 122. However, this also brings about the problem that the light between adjacent light guides 120 is easily interfered.

[0045] Please refer again Figure 1 and Figure 4 The blocking member 320 is disposed between two adjacent light guides 120 to prevent light leakage between adjacent light guides 120. When the light emitted by the patch light source 210 corresponding to one of the light guide columns 122 is reflected into the adjacent light guide column 122, or the light propagating in the light guide column 122 is reflected into the adjacent light guide column 122, the light emitted by the adjacent patch light source 210 or the adjacent light guide column 122 is blocked by the blocking member 320, thereby avoiding cross-light interference caused by the lighting of multiple adjacent light guide columns 122, improving the recognizability of the light from the patch light source 210 after passing through the light guide head 122, and enhancing the accuracy of the indicator light indication of the protector.

[0046] Optionally, the support column 130 and the base 110 are integrally formed and are both made of transparent optical materials. In order to ensure a better blocking effect and avoid light leakage and cross-light between adjacent light guide columns 122, the blocking member 320 uses an opaque material different from the support column 130 and the base 110, and is independently provided relative to the light guide structure 100. The above process simplifies the manufacturing process of the support column 130 and the base 110, and avoids the combination of components of different materials due to the fact that the blocking member 320 involves opaque materials. In one implementation, the blocking member 320 is provided on the panel 300 of the protector. In another implementation, the blocking member 320 is provided separately from the light guide structure 100 and the panel 300 of the protector.

[0047] See again Figure 1 The through holes 111 on the base 110 correspond to the support columns 130 one by one. The support columns 130 include two support legs, which are disposed on both sides of the corresponding through holes 111. Figure 4 The barrier 320 is sandwiched between the two corresponding support legs. The barrier 320 and the two corresponding support legs form an integral structure that is spaced apart from the light guide 120, so that light crosstalk between the light guides 120 can be avoided through the barrier or the integral structure formed by the barrier and the support legs.

[0048] In some embodiments, a through hole 111 is provided on the base 110, and the through hole 111 is provided between two adjacent light guide parts 120, and a blocking member 320 is inserted into the through hole 111. After the blocking member 320 is inserted into the through hole 111, the blocking member 320 separates two adjacent light guide columns 122, so that the light guide column 122 will not be disturbed by the light emitted by the adjacent light guide column 122. In some preferred embodiments of the above implementation, the blocking member 320 is an I-shaped structure, including two parallel side structures and a vertical structure connecting the two parallel side structures. The surfaces of the two parallel side structures of the blocking member 320 are opposite to the surfaces of the adjacent light guide columns 122 to avoid light leakage between the adjacent light guide columns 122, and the surface of the vertical structure is sandwiched between the two supporting feet of the support column, and is opposite to the inner surfaces of the two supporting feet of the support column. The barrier 320 can be a vertical structure sandwiched between two supporting legs, or a whole consisting of parallel side structures and vertical structures of the barrier 320 sandwiched between two supporting legs. A thicker structure as the barrier 320 is prone to surface shrinkage risk. The I-shaped structural design allows each part of the barrier 320: two parallel side structures and a vertical structure connecting the two parallel side structures, to basically maintain a relatively consistent thickness, thereby reducing the risk of surface shrinkage of the barrier 320.

[0049] It can be understood that, depending on the space occupied by the barrier 320 inside the light-guiding structure 100, especially between the support column 130, other structures that meet the shielding effect of light leakage between adjacent light-guiding columns 122 and have a lower risk of surface shrinkage can also be used as the barrier 320, for example, a cylindrical, cubic, or other special-shaped structure, as well as a structure with a groove on the basis of a cylindrical, cubic, or other special-shaped structure.

[0050] The barrier 320 and the support column 130 have substantially the same height. After assembly, the bottom end of the barrier 320 is flush with the bottom end of the support column 130, and the two have the same gap from the circuit board 200. When the light guide structure 100 or the panel 300 is subjected to external extrusion or impact, the barrier 320 and the support column 130 produce a small deformation toward the circuit board 200 and can press against the circuit board 200 to stop, thereby avoiding the sinking of the light guide structure 100 caused by further deformation.

[0051] During the assembly process, the barrier 320 passes through the through hole 111 on the base 110. After the assembly is completed, the barrier 320 is substantially at the same height as the bottom of the support column 130. The barrier 320 is used to block the light leakage between adjacent light guides 120, so that the light guide column 122 accurately transmits the light emitted by the corresponding patch light source 210 without being interfered by the light transmitted in the adjacent patch light source 210 or the adjacent light guide column 122, thereby avoiding unnecessary mis-indications of the light guide head 121.

[0052] Figure 5 For a schematic diagram of the protector provided by the utility model, see Figure 5 The utility model patent also provides a protector, including a light guide structure 100, a circuit board 200 and a panel 300. The circuit board 200 is provided with a plurality of patch light sources 210, and the panel 300 is provided with a plurality of light leakage holes 310 for one-to-one matching with the plurality of light guide heads 121 of the light guide structure 100.

[0053] The protector provided in this embodiment is provided with a light guide structure 100 corresponding to the patch light source 210, so that the light guide structure 100 is stably and reliably fixed on the panel 300, accurately displays the current state of the protector, is simple to assemble, has low cost, and has high consistency. When the light guide structure 100 is subjected to external impact, unnecessary sinking and deformation of the light guide structure 100 can be effectively avoided.

[0054] In some embodiments, a barrier 320 is provided on the panel 300, and the panel 300 is preferably integrally formed with the barrier 320 to simplify the assembly process of the protector. During the assembly of the light guide structure 100 and the panel 300, the barrier 320 on the panel 300 passes through the light guide structure 100 and is inserted into the light guide structure 100. The barrier 320 on the panel 300 can also be plugged into the light guide structure 100, so that the panel 300 and the light guide structure 100 are better fixed. In this embodiment, by providing a barrier 320 on the panel 300, the stability between the panel 300 and the light guide structure 100 is improved, and the cross-light interference of adjacent patch light sources 210 is blocked, so that the light guide head 121 accurately indicates the light emitted by the corresponding patch light source 210, and avoids unnecessary mis-indications by the light guide head 121.

[0055] The protector provided by the embodiment of the utility model can be used for three-phase power supply, electromechanical equipment, etc. Through the protector of the utility model, anomalies such as phase failure and phase mismatch can be accurately indicated to avoid accidents caused by incorrect wiring of the three-phase power supply or motor reversal caused by reverse phase connection of electromechanical equipment.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A light guide structure, used to guide light from a plurality of patch light sources of a protector, wherein the plurality of patch light sources are attached to a circuit board of the protector, and the light guide structure comprises a base and a light guide portion; It is characterized in that The light guide part includes a plurality of light guide heads and light guide columns corresponding to the plurality of light guide heads one by one; the plurality of light guide columns correspond to the plurality of patch light sources one by one, so as to guide the light emitted by the corresponding patch light sources through the light guide columns; the plurality of light guide heads are used to cooperate with the plurality of light leakage holes on the panel of the protector one by one; The light-guiding structure further comprises a plurality of supporting columns, wherein the plurality of supporting columns are connected to the bottom of the base with the light-guiding columns spaced apart, wherein the distance from the bottom end of the supporting columns to the circuit board is greater than the distance from the bottom end of the light-guiding columns to the circuit board.

2. The light guide structure according to claim 1, characterized in that: The side wall of the light guide head is provided with a plurality of ribs arranged at intervals for interference fit with the light leakage hole.

3. The light guide structure according to claim 1, characterized in that: Also includes: The blocking member is arranged between two adjacent light guiding parts.

4. The light guide structure according to claim 3, characterized in that: The base is provided with a through hole, the through hole is arranged between two adjacent light guide parts, and the blocking member is inserted into the through hole.

5. The light guide structure according to claim 3, characterized in that: The support column and the base plate are integrally formed, and the blocking member is independently arranged relative to the light guide structure.

6. The light guide structure according to claim 5, characterized in that: The support column includes two support legs, the two support legs are arranged oppositely on two sides of the corresponding through hole, and the blocking member is at least partially sandwiched between the two corresponding support legs; The blocking member and the corresponding two supporting legs form an integral structure that is spaced apart from the light guiding portion.

7. The light guide structure according to any one of claims 3 to 6, characterized in that: The barrier is an I-shaped structure.

8. The light guide structure according to any one of claims 3 to 6, characterized in that: The bottom end of the blocking member is flush with the bottom end of the supporting column.

9. A protector, comprising a circuit board, a plurality of patch light sources and a panel attached to the circuit board; characterized in that: It also includes the light guide structure according to any one of claims 1 to 8, wherein the panel is provided with a plurality of light leakage holes for one-to-one matching with the plurality of light guide heads of the light guide structure.

10. The protector according to claim 9, characterized in that: The panel and the barrier are formed integrally.

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