Anti-electric shock screw lamp holder

Abstract

The utility model provides an anti-electric shock screw lamp holder which comprises a panel, a lamp holder function assembly and an installation plate, the panel and the installation plate are assembled to form a containing cavity, the lamp holder function assembly is installed in the containing cavity and comprises an insulation cover plate, a negative electrode contact piece, a positive electrode elastic piece and a bottom plate, the insulation cover plate is installed on the bottom plate, and the negative electrode contact piece is installed on the bottom plate. The insulating cover plate is provided with a mounting interface, the inner wall of the mounting interface is provided with an insulating internal thread used for fixing a bulb, the inner wall of the mounting interface is provided with a groove used for accommodating the negative contact piece, one end of the negative contact piece is located in the groove, and the outer surface of the negative contact piece protrudes out of the groove. The internal thread on the inner wall of the mounting interface of the product is made of an insulating material, the cathode contact piece and the anode elastic piece are electrified, and compared with an existing screw socket adopting a metal threaded ring as a cathode, the area of the cathode contact piece is reduced by 80% compared with the area of the metal threaded ring, so that the risk of electric shock is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the field of electrical technology, in particular to a screw-type lamp holder for preventing electric shock. Background Art

[0002] Screw-on lamp holders are widely used in daily production. The existing lamp holder interfaces on the market use a circle of metal threaded ring to fix the bulb threads to achieve the purpose of power supply. This structure can easily cause fingers to touch the threaded ring during the process of removing and replacing the bulb, resulting in the risk of electric shock. Utility Model Content

[0003] In response to the shortcomings of the existing technology, the purpose of the present invention is to provide a screw-type lamp holder that is protected against electric shock. It solves the problem in the existing technology that the lamp holder interface uses a circle of metal threaded ring to fix the bulb thread to achieve the purpose of power supply, and the threaded ring is easily touched by fingers during the process of disassembly and replacement of the bulb, resulting in the risk of electric shock.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-electric shock screw-type lamp holder, comprising a panel, a lamp holder functional component and a mounting plate, the panel and the mounting plate are assembled to form an accommodating cavity, the lamp holder functional component is installed in the accommodating cavity, the lamp holder functional component comprises an insulating cover plate, a negative contact, a positive spring piece and a base plate, the insulating cover plate is installed on the base plate, a mounting interface is provided on the insulating cover plate, an insulating internal thread for fixing the light bulb is provided on the inner wall of the mounting interface, a groove for accommodating the negative contact is opened on the inner wall of the mounting interface, one end of the negative contact is located in the groove, and the outer surface of the negative contact protrudes out of the groove.

[0005] As a further improvement of the above technical solution:

[0006] The lamp holder functional component also includes a positive terminal and a negative terminal, which are respectively installed on both sides of the base plate, the negative contact piece is electrically connected to the negative terminal, and the positive spring piece is electrically connected to the positive terminal.

[0007] One end of the negative contact is located in the groove, and the other end is located at the bottom of the negative terminal. One end of the positive spring is located at the bottom of the mounting interface, and the other end is located at the bottom of the positive terminal. The insulating cover presses the negative contact and the positive spring on the bottom plate respectively.

[0008] Mounting holes are respectively provided on the insulating cover plate at positions corresponding to the positive terminal and the negative terminal, and conductive bolts are passed through the two mounting holes. One end of one conductive bolt passes through the top of the positive terminal and is located directly above the positive spring piece, and one end of the other conductive bolt passes through the top of the negative terminal and is located directly above the negative contact piece. The conductive bolts are respectively threadedly connected to the positive terminal and the negative terminal.

[0009] The bottom plate is provided with a plurality of elastic buckles, and the insulating cover plate is provided with first clamping grooves matching the corresponding elastic buckles, and the bottom plate and the insulating cover plate are buckled and installed.

[0010] The outer surface of the insulating cover is provided with a hard buckle, and the mounting plate is provided with an elastic bracket corresponding to the position of the hard buckle. The elastic bracket is provided with a second slot matching the hard buckle, and the insulating cover is buckled and mounted on the mounting plate.

[0011] The mounting plate is further provided with a positioning rib for positioning the lamp holder functional component. The positioning rib is spaced apart from the elastic bracket, and the lamp holder functional component is supported against the inner side of the positioning rib.

[0012] There are three hard clips, and the three hard clips and the three second clip slots cooperate to form a triangular fixing structure. There are three positioning ribs, and the three positioning ribs are located outside the lamp holder functional component to form a triangular positioning structure.

[0013] The panel is made of PC material, and the insulating cover and bottom plate are made of PBT material.

[0014] An outer sleeve is provided on the panel at a position corresponding to the mounting interface. The outer sleeve is located on the side of the mounting interface, and the inner diameter of the outer sleeve is larger than the outer diameter of the mounting interface.

[0015] Compared with the existing technology, the above technical solution brings the following technical effects:

[0016] The present utility model proposes an anti-electric shock screw-type lamp holder, the functional components of the lamp holder include an insulating cover, a negative contact, a positive spring and a base plate. A mounting interface is provided on the insulating cover, and the internal thread on the inner wall of the mounting interface is made of insulating material. The insulating internal thread only serves to fix the light bulb, and the negative contact and the positive spring are used for power supply. Compared with the existing screw-type lamp holder that uses a metal thread ring as the negative electrode, this structure has an area of ​​the negative contact in the present application that is eighty percent smaller than the area of ​​the metal thread ring, thereby greatly reducing the risk of electric shock.

[0017] The utility model forms a triangular fixing structure by cooperating with three hard clips and three second clip slots. This structure can effectively prevent consumers from accidentally dropping the product on the bottom and causing it to scatter and disengage. At the same time, three positioning ribs are provided to support the outer wall of the lamp holder functional component. The three positioning ribs form a triangular positioning structure, which further improves the stability of the product.

[0018] The outer sleeve of the utility model adopts a large sleeve structure, and the inner diameter of the outer sleeve is larger than the outer diameter of the installation interface, which effectively prevents the outer sleeve from being too close to the outer wall of the bulb and failing to dissipate heat, thereby damaging the bulb. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is an exploded schematic diagram of the utility model structure;

[0021] Figure 2 This is a schematic diagram of one angle of the lamp holder functional components;

[0022] Figure 3 This is a schematic diagram of the lamp holder functional components from another angle;

[0023] Figure 4 It is a schematic diagram of the base plate structure;

[0024] Figure 5 This is a schematic diagram of the mounting plate structure without the lamp holder functional component installed;

[0025] Figure 6 It is a schematic diagram of the structure of the mounting plate with the lamp holder functional components installed;

[0026] Description of main component symbols:

[0027] 1. Panel; 2. Lamp holder functional components; 21. Insulating cover; 211. Groove; 22. Negative contact; 23. Positive spring; 24. Bottom plate; 25. Positive terminal; 26. Negative terminal; 3. Mounting plate; 4. Mounting interface; 5. Conductive bolt; 7. Elastic clip; 8. First slot; 9. Hard clip; 10. Elastic bracket; 11. Second slot; 12. Positioning rib; 13. Outer opening. DETAILED DESCRIPTION

[0028] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0031] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0032] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0033] Under normal circumstances, a person standing on the ground and touching the neutral wire will not get an electric shock. This is because under normal circumstances, there is no voltage between the neutral wire and the ground, and the current cannot form a loop through the human body, so there will be no electric shock. However, in some special cases, touching the neutral wire can cause electric shock. For example, the neutral wire in the circuit is thinner than the live wire, or it is disconnected somewhere, which causes the voltage of the neutral wire to the ground to increase, and even exceed the safe voltage of the human body. At this time, touching the neutral wire will cause the risk of electric shock. In addition, in the case of an imbalance in the three-phase live wires, the imbalance of the three-phase live wires of the power grid will cause the neutral wire to be energized. In this case, touching the neutral wire may also cause an electric shock. In order to ensure safety, this embodiment proposes an anti-electric shock screw-type lamp holder.

[0034] like Figures 1 to 6 As shown, the anti-electric shock screw-type lamp holder of this embodiment includes a panel 1, a lamp holder functional component 2 and a mounting plate 3. The panel 1 and the mounting plate 3 are assembled to form an accommodating cavity. The lamp holder functional component 2 is installed in the accommodating cavity. The lamp holder functional component 2 includes an insulating cover 21, a negative contact 22, a positive spring 23 and a base plate 24. The insulating cover 21 is installed on the base plate 24. A mounting interface 4 is provided on the insulating cover 21. An insulating internal thread for fixing the light bulb is provided on the inner wall of the mounting interface 4. A groove 211 for accommodating the negative contact 22 is opened on the inner wall of the mounting interface 4. One end of the negative contact 22 is located in the groove 211, and the outer surface of the negative contact 22 protrudes out of the groove 211.

[0035] The insulating cover 21, the mounting interface 4 and the insulating internal thread are all one-piece molded structures. The insulating internal thread of this product no longer acts as a negative electrode. The power-on structure adopts a negative contact 22 and a positive spring piece 23. The negative contact piece 22 is electrically connected to the negative terminal 26 located on one side of the base plate 24, and the positive spring piece 23 is electrically connected to the positive terminal 25 located on the other side of the base plate 24. When the light bulb is tightened on the internal thread, the positive pole of the light bulb is in close contact with the positive spring piece 23, and the metal thread on the side of the light bulb is in close contact with the negative contact piece 22. Therefore, the negative contact piece 22 replaces the metal thread ring on the existing screw lamp holder. This product uses an insulating internal thread and only serves to fix the light bulb. Since the area of ​​the negative contact piece 22 is 80% smaller than that of the existing metal thread ring, the risk of electric shock is greatly reduced.

[0036] This product's front panel 1 is made of PC, which is heat-resistant and durable, resisting cracking. The front panel 1 and mounting plate 3 enclose the lamp holder's functional components 2, enhancing the product's aesthetics while preventing dust accumulation and electric shock. The insulating cover 21 and base 24 are made of PBT, which is heat-resistant and resists deformation and melting.

[0037] In one specific embodiment, one end of the negative contact 22 is located in the groove 211, and the other end is located at the bottom of the negative terminal 26. One end of the positive spring 23 is located at the bottom of the mounting interface 4, and the other end is located at the bottom of the positive terminal 25. The insulating cover 21 presses the negative contact 22 and the positive spring 23 onto the bottom plate 24 respectively.

[0038] One end of the negative contact piece 22 is a horizontal surface, and the other end is a vertical surface. The upper surface of the bottom plate 24 is provided with a structure for positioning the negative terminal 26. When installing, the negative terminal 26 is installed in a specific position, and then the horizontal surface of the negative contact piece 22 is placed at the bottom of the negative terminal 26. One end of the positive spring piece 23 is a horizontal surface, and the other end is a tongue reed structure. A support column is provided on the bottom plate 24 below the tongue reed structure. The upper surface of the bottom plate 24 is provided with a structure for positioning the positive terminal 25. A positioning structure is also provided between the positive spring piece 23 and the bottom plate 24. When installing, the positive terminal 25 is installed in the specific position. After the positive terminal 25 is fixed in position, the horizontal end of the positive spring piece 23 is placed at the bottom of the positive terminal 25. After the insulating cover 21 is installed, the bottom of the insulating cover 21 presses the negative contact 22 and the positive spring piece 23 on the bottom plate 24. At this time, the vertical end of the negative contact 22 is located in the groove 211, and the tongue spring structure of the positive spring piece 23 is located at the bottom of the mounting interface 4. The negative terminal 26 and the insulating cover 21 fix the position of the negative contact 22, and the negative contact 22 does not move. The positive terminal 25 and the insulating cover 21 fix the position of the positive spring piece 23, and the positive spring piece 23 does not move.

[0039] In this embodiment, mounting holes are respectively provided on the insulating cover plate 21 at positions corresponding to the positive terminal 25 and the negative terminal 26, and conductive bolts 5 are passed through the two mounting holes. One end of one conductive bolt 5 passes through the top of the positive terminal 25 and is located directly above the positive spring piece 23, and one end of the other conductive bolt 5 passes through the top of the negative terminal 26 and is located directly above the negative contact piece 22. The two conductive bolts 5 are respectively threadedly connected to the positive terminal 25 and the negative terminal 26.

[0040] There is a certain distance between the conductive bolt 5 and the positive spring piece 23, and between the conductive bolt 5 and the negative contact piece 22. This distance is used to insert the neutral wire and the live wire. Rotate the two conductive bolts 5, one of the conductive bolts 5 moves downward to press the neutral wire and the negative contact piece 22 into contact, and the other conductive bolt 5 moves downward to press the live wire and the positive spring piece 23 into contact.

[0041] In one specific embodiment, a plurality of elastic buckles 7 are provided on the bottom plate 24 , and first card slots 8 matching the elastic buckles 7 are provided on the insulating cover plate 21 , so that the bottom plate 24 and the insulating cover plate 21 are buckled and installed.

[0042] In this embodiment, there are three elastic clips 7 and three first slots 8. The three elastic clips 7 are respectively located on the left side, right side and front side of the base plate 24, and the three first slots 8 are respectively located on the left outer surface, right outer surface and front outer surface of the insulating cover plate 21. The three elastic clips 7 form a triangular structure with strong stability. After aligning the elastic clip 7 with the first slot 8, gently press the insulating cover plate 21, and the elastic clip 7 will produce elastic deformation and snap into the first slot 8.

[0043] In one specific embodiment, a rigid clip 9 is provided on the outer surface of the insulating cover plate 21. An elastic bracket 10 is provided on the mounting plate 3 at a position corresponding to the rigid clip 9. The elastic bracket 10 is provided with a second retaining groove 11 that matches the rigid clip 9. The insulating cover plate 21 is snap-fitted onto the mounting plate 3. The mounting plate 3 is also provided with positioning ribs 12 for positioning the lamp holder functional assembly 2. The positioning ribs 12 are spaced apart from the elastic bracket 10, and the lamp holder functional assembly 2 abuts against the inner side of the positioning ribs 12. There are three rigid clips 9, and the three rigid clips 9 and the three second retaining grooves 11 cooperate to form a triangular fixing structure. There are also three positioning ribs 12, and the three positioning ribs 12 are located outside the lamp holder functional assembly 2, forming a triangular positioning structure.

[0044] Three rigid clips 9 are respectively provided on the left, right, and front outer surfaces of the insulating cover 21, forming a triangular structure. Three positioning ribs 12 respectively support the lower left corner, lower right corner, and rear side of the lamp holder functional component 2. The two positioning ribs 12 located at the lower left and lower right corners are L-shaped, while the rear positioning rib 12 matches the shape of the rear surface of the lamp holder functional component 2 and is arc-shaped. During installation, align the rigid clips 9 with the second slot 11. The three positioning ribs 12 are located at appropriate positions on the lower left corner, lower right corner, and rear side of the lamp holder functional component 2. Gently press the lamp holder functional component 2, and the elastic bracket 10 deforms outward. The rigid clips 9 are inserted into the second slot 11 and snapped together. The three positioning ribs 12 support the lower left corner, lower right corner, and rear side of the lamp holder functional component 2, preventing the functional components from scattering due to accidental dropping, resulting in product damage. This has been verified to ensure stability during customer use and the stability of product quality after sales.

[0045] In one specific embodiment, an outer sleeve 13 is provided on the panel 1 at a position corresponding to the mounting interface 4. The outer sleeve 13 is located outside the mounting interface 4. The inner diameter of the outer sleeve 13 is larger than the outer diameter of the mounting interface 4. The mounting interface 4 and the panel 1 are integrally formed. A heat dissipation space is formed between the outer sleeve 13 and the mounting interface 4, which effectively prevents the outer sleeve 13 from being too close to the outer wall of the bulb and being unable to dissipate heat, thereby damaging the bulb.

[0046] Fixing holes are provided on the mounting plate 3. The mounting plate 3 is mounted on the wall through bolts and the fixing holes.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0048] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments. As long as they meet the purpose of the present invention, they should be within the scope of protection required by the present invention, such as: different combinations of specific embodiments, different combinations of distinguishing technical features.

Claims

1. A screw-type lamp holder for preventing electric shock, characterized in that: The invention comprises a panel (1), a lamp holder functional component (2) and a mounting plate (3), wherein the panel (1) and the mounting plate (3) are assembled to form an accommodating cavity, wherein the lamp holder functional component (2) is mounted in the accommodating cavity, wherein the lamp holder functional component (2) comprises an insulating cover plate (21), a negative contact piece (22), a positive spring piece (23) and a bottom plate (24), wherein the insulating cover plate (21) is mounted on the bottom plate (24), wherein a mounting interface (4) is provided on the insulating cover plate (21), wherein an insulating internal thread for fixing a light bulb is provided on the inner wall of the mounting interface (4), wherein a groove (211) for accommodating the negative contact piece (22) is provided on the inner wall of the mounting interface (4), wherein one end of the negative contact piece (22) is located in the groove (211), and the outer surface of the negative contact piece (22) protrudes out of the groove (211).

2. The anti-electric shock screw lamp holder according to claim 1, characterized in that: The lamp holder functional component (2) further comprises a positive terminal (25) and a negative terminal (26), wherein the positive terminal (25) and the negative terminal (26) are respectively mounted on both sides of the base plate (24), the negative contact piece (22) is electrically connected to the negative terminal (26), and the positive spring piece (23) is electrically connected to the positive terminal (25).

3. The anti-electric shock screw lamp holder according to claim 2, characterized in that: One end of the negative contact piece (22) is located in the groove (211), and the other end is located at the bottom of the negative terminal (26); one end of the positive spring piece (23) is located at the bottom of the mounting interface (4), and the other end is located at the bottom of the positive terminal (25); the insulating cover (21) respectively presses the negative contact piece (22) and the positive spring piece (23) onto the bottom plate (24).

4. The anti-electric shock screw-type lamp holder according to claim 2, characterized in that: Mounting holes are respectively provided on the insulating cover plate (21) at positions corresponding to the positive terminal (25) and the negative terminal (26), and conductive bolts (5) are respectively passed through the two mounting holes, wherein one end of one conductive bolt (5) passes through the top of the positive terminal (25) and is located directly above the positive spring sheet (23), and one end of the other conductive bolt (5) passes through the top of the negative terminal (26) and is located directly above the negative contact sheet (22), and the conductive bolts (5) are respectively threadedly connected to the positive terminal (25) and the negative terminal (26).

5. The anti-electric shock screw-type lamp holder according to claim 1, characterized in that: The bottom plate (24) is provided with a plurality of elastic snaps (7), and the insulating cover plate (21) is provided with first snap grooves (8) that match the elastic snaps (7), and the bottom plate (24) and the insulating cover plate (21) are buckled and installed.

6. The anti-electric shock screw-type lamp holder according to claim 1, characterized in that: The outer surface of the insulating cover plate (21) is provided with a hard buckle (9); an elastic bracket (10) is provided on the mounting plate (3) at a position corresponding to the hard buckle (9); a second clamping groove (11) matching the hard buckle (9) is provided on the elastic bracket (10); and the insulating cover plate (21) is buckled and mounted on the mounting plate (3).

7. The anti-electric shock screw-type lamp holder according to claim 6, characterized in that: The mounting plate (3) is further provided with a positioning rib (12) for positioning the lamp holder functional component (2); the positioning rib (12) is spaced apart from the elastic bracket (10), and the lamp holder functional component (2) is supported against the inner side of the positioning rib (12).

8. The anti-electric shock screw-type lamp holder according to claim 7, characterized in that: The number of the hard buckles (9) is three, and the three hard buckles (9) and the three second slots (11) cooperate to form a triangular fixing structure. The number of the positioning ribs (12) is three, and the three positioning ribs (12) are located outside the lamp holder functional component (2) to form a triangular positioning structure.

9. The anti-electric shock screw-type lamp holder according to claim 1, characterized in that: The panel (1) is made of PC material, and the insulating cover plate (21) and the bottom plate (24) are made of PBT material.

10. The anti-electric shock screw lamp holder according to claim 1, characterized in that: An outer opening (13) is provided on the panel (1) at a position corresponding to the mounting interface (4); the outer opening (13) is located outside the mounting interface (4); and the inner diameter of the outer opening (13) is larger than the outer diameter of the mounting interface (4).

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