Material-saving plastic screw lamp holder

Abstract

The utility model relates to the technical field of lamp equipment, in particular to a material-saving plastic screw lamp holder, which comprises a live wire conducting strip and a zero wire conducting strip, the live wire conducting strip is divided into an external connecting part and an internal connecting part, the internal connecting part adopts a three-section structure comprising an inclined surface for transition, a live wire contact part is gradually lifted through the inclined surface, and a zero wire contact part is gradually lifted through the zero wire conducting strip. The height difference from the barrel edge to the center is formed, and when the bulb is screwed in, elastic force is generated through elastic deformation of the inclined face to press an electrode of the bulb; and the zero line conducting strip adopts a double-inclined structure design, and the first inclined part and the second inclined part are symmetrically distributed in a V shape, so that the zero line contact parts form elastic deformation contact surfaces on the two sides of the cylinder wall to press the electrode of the bulb. According to the utility model, stable contact between the conducting strip and the bulb can be effectively ensured.

Description

Technical Field

[0001] This utility model relates to the field of lighting equipment technology, and more specifically, to a material-saving plastic screw-type lamp holder. Background Technology

[0002] Plastic screw-in lamp holders are a type of lamp holder that uses a conductive metal sheet and plastic threads instead of a metal threaded sleeve. This type of lamp holder saves a lot of metal materials because it only uses a metal sheet. However, the existing structural design of conductive metal sheets has inherent defects: its linear structure makes it difficult to form a uniformly distributed elastic contact area after the bulb is screwed in, and there is a problem of poor contact between the bulb's wiring electrodes and the conductive sheet. Utility Model Content

[0003] The purpose of this invention is to overcome the problem of poor contact between the conductive metal sheet and the bulb in existing plastic screw-type lamp holders, and to provide a material-saving plastic screw-type lamp holder that can effectively ensure stable contact between the conductive sheet and the bulb.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A material-saving plastic screw-type lamp holder is provided, including a base plate. A lamp holder housing is mounted on the base plate. Two terminals are provided on the outer bottom of the lamp holder housing. A live wire conductive piece and a neutral wire conductive piece are respectively installed in the two terminals. One end of each of the live wire and neutral wire conductive pieces is fixedly connected to the terminals. The other end of the live wire conductive piece is inserted into the lamp holder housing and close to its bottom surface. The other end of the neutral wire conductive piece is inserted into the lamp holder housing and close to its side wall. The live wire conductive piece is divided into an external live wire connection portion located outside the lamp holder housing and an internal live wire connection portion inserted into the lamp holder housing. The internal live wire connection portion includes a live wire contact portion, a beveled portion, and a live wire transition portion. The live wire transition portion is located at the end of the beveled portion close to the inner wall of the lamp holder housing. The live wire contact portion is located at the end of the beveled portion close to the center of the lamp holder housing. The beveled portion is positioned relative to the... The bottom surface of the lamp holder is inclined, and the distance between the end of the inclined portion near the live wire contact and the bottom surface of the lamp holder is greater than the distance between the other end and the bottom surface of the lamp holder. The neutral wire conductive piece is divided into an external neutral wire connection portion located outside the lamp holder and an internal neutral wire connection portion inserted inside the lamp holder. The internal neutral wire connection portion includes a neutral wire contact portion, a first inclined portion, a second inclined portion, and a neutral wire transition portion. The neutral wire transition portion is located at the end of the first inclined portion near the bottom surface of the lamp holder, the first inclined portion is located at the end of the neutral wire contact portion near the neutral wire transition portion, and the second inclined portion is located at the end of the neutral wire contact portion away from the neutral wire transition portion. Both the first inclined portion and the second inclined portion are inclined relative to the inner wall of the lamp holder, and the distance between the end of the first inclined portion and the second inclined portion near the neutral wire contact portion and the inner wall of the lamp holder is greater than the distance between the other end and the inner wall of the lamp holder.

[0006] In the above-described process, as the bulb is screwed into the lamp holder, the second inclined portion on the neutral wire conductive plate first contacts the bulb's electrode. The bulb continues to descend along the inclined surface of the second inclined portion, while the neutral wire conductive plate undergoes elastic deformation, allowing the bulb to continue descending smoothly and contact the neutral wire contact. Pressure is applied between the neutral wire contact and the bulb's electrode. Due to deformation, the inclined surface of the first inclined portion changes its angle, causing the neutral wire contact and the bulb's electrode to adhere tightly to each other with elastic force. As the bulb continues to screw into the bottom of the lamp holder, the other electrode of the bulb begins to contact the live wire contact of the live wire conductive plate. The bulb presses down on the live wire contact, causing the adjacent inclined surfaces to change their angle. The elastic force generated by this deformation ensures stable contact between the live wire contact and the bulb's electrode. Finally, the bulb connects to the external circuit through the live wire transition section, the neutral wire transition section, and the terminal block. The elastic force of the inclined surfaces, the first inclined portion, and the second inclined portion presses the conductive plate firmly against the bulb's electrode, effectively preventing poor contact between the conductive plate and the bulb.

[0007] Furthermore, the inner wall of the lamp holder is provided with two sections of plastic semi-threads along the circumference. The two sections of plastic semi-threads are arranged opposite each other, and the inner wall of the lamp holder between the plastic semi-threads is a sliding demolding surface. During the injection molding process, the plastic semi-threads are directly injection molded from the threaded core and cavity of the mold. The setting of the sliding demolding surface allows the threaded core to be pulled out without the need for complex mechanical mechanisms such as gears. Without affecting the use and installation of the lamp holder screw, the original complete thread is divided into two by the sliding demolding surface, achieving efficient demolding of the internal thread.

[0008] Furthermore, the live wire transition portion abuts against the bottom surface of the lamp holder, and the neutral wire transition portion abuts against the sliding demolding surface; the sliding demolding surface can also be used to place the neutral wire conductive piece, so that the bulb comes into contact with the neutral wire first during installation, avoiding installation safety issues, and also preventing the plastic threads and the neutral wire conductive piece from interfering with each other during bulb installation.

[0009] Furthermore, a fixing wall is provided on the inner side of the bottom of the lamp holder. The fixing wall is located on the side close to the neutral wire conductive piece. The fixing wall and the inner wall of the lamp holder form a mounting groove. The neutral wire transition part is at least partially located in the mounting groove. The neutral wire transition part is installed in the mounting groove to prevent the neutral wire conductive piece from becoming loose.

[0010] Furthermore, the bottom outer side of the lamp holder is provided with four mounting parts, and the terminal block is provided on two of the mounting parts. Each mounting part is provided with a first latch, and the lamp holder base plate is provided with a first claw. The first latch and the first claw engage with each other. The mounting part is provided with a total of four first latch engagement structures, which are stable and reliable. This allows the terminal block and mounting part to be produced using recycled materials, effectively reducing costs. Even if one latch fails, the product can still be used normally.

[0011] Furthermore, both the live wire conductive sheet and the neutral wire conductive sheet are made of copper. The plastic screw design avoids the use of an entire metal nested electrode, thus greatly reducing the material cost of the conductive sheet. The conductive sheet can be made of copper sheet with a larger thickness.

[0012] Furthermore, both terminals are equipped with markings; these markings help workers distinguish whether a live wire or a neutral wire should be connected to the terminal during installation.

[0013] Furthermore, it also includes a lamp holder housing, wherein the lamp holder base plate is detachably connected to the lamp holder housing; the detachable connection between the lamp holder base plate and the lamp holder housing facilitates installation and maintenance by workers.

[0014] Furthermore, a second claw is provided on the base plate of the lamp holder, and a second slot is provided on the outer shell of the lamp holder. The second claw engages with the second slot. This engaging connection method avoids the need for internal thread processing on the surface of the plastic parts, thereby reducing processing costs.

[0015] Furthermore, the lamp holder housing is provided with a through-hole, and when the lamp holder housing is installed, the lamp holder is inserted into the through-hole; the through-hole fits snugly with the lamp holder, improving the overall appearance of the lamp holder.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The inclined surface of the first inclined portion of the neutral wire conductive sheet can deform to change the tilt angle, so that the neutral wire contact and the bulb electrode are in close contact with each other due to elastic force. At the same time, the inclined surface of the live wire conductive sheet changes the tilt angle. The elastic force generated by this deformation ensures stable contact between the live wire contact and the bulb electrode, effectively avoiding the problem of poor contact between the conductive sheet and the bulb.

[0018] 2. The inner wall of the lamp tube between the plastic semi-threaded parts is a sliding demolding surface, which allows the threaded core to be split in two through the sliding demolding surface without the need for complex mechanical mechanisms such as gears during the core pulling process, without affecting the use and installation of the lamp holder screw, thus achieving efficient demolding of the internal thread. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall external structure of a material-saving plastic screw-type lamp holder;

[0020] Figure 2 A top-view schematic diagram of the internal structure of a material-saving plastic screw-type lamp holder;

[0021] Figure 3 A schematic diagram of the internal structure of a material-saving plastic screw-type lamp holder;

[0022] Figure 4 This is a side view schematic diagram of a material-saving plastic screw-type lamp holder;

[0023] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0024] In the attached diagram: 100, lamp holder base plate; 110, first latch; 120, second latch; 200, lamp holder housing; 210, plastic semi-thread; 220, sliding demolding surface; 230, fixed wall; 240, mounting groove; 300, terminal block; 310, marking part; 400, live wire conductive piece; 410, live wire external connection part; 420, live wire internal connection part; 421, live wire contact part; 422, inclined part; 423, live wire transition part; 500, neutral wire conductive piece; 510, neutral wire external connection part; 520, neutral wire internal connection part; 521, neutral wire contact part; 522, first inclined part; 523, second inclined part; 524, neutral wire transition part; 600, mounting part; 700, first latch; 800, lamp holder housing; 810, second latch; 820, through opening. Detailed Implementation

[0025] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0026] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0027] Example 1

[0028] This embodiment is a first embodiment of a material-saving plastic screw-type lamp holder, such as... Figures 2 to 5As shown, the lamp holder includes a base plate 100, on which a lamp holder 200 is mounted. Two terminals 300 are located on the outer bottom of the lamp holder 200. A live wire conductive piece 400 and a neutral wire conductive piece 500 are respectively installed inside the two terminals 300. One end of each of the live wire conductive piece 400 and the neutral wire conductive piece 500 is fixedly connected to a terminal 300. The other end of the live wire conductive piece 400 is inserted into the lamp holder 200 and close to its bottom surface. The other end of the neutral wire conductive piece 500 is inserted into the lamp holder 200. The live wire conductive sheet 400 is located near the side wall of the lamp holder 200. It is divided into an external live wire portion 410 located outside the lamp holder 200 and an internal live wire portion 420 inserted inside the lamp holder 200. The internal live wire portion 420 includes a live wire contact portion 421, a beveled portion 422, and a live wire transition portion 423. The live wire transition portion 423 is located at one end of the beveled portion 422 near the inner wall of the lamp holder 200. The live wire contact portion 421 is located at one end of the beveled portion 422 near the center of the lamp holder 200. The beveled portion 422 is positioned relative to the lamp holder 200. The bottom surface of the lamp holder 200 is inclined, and the distance between one end of the inclined portion 422 near the live wire contact 421 and the bottom surface of the lamp holder 200 is greater than the distance between the other end and the bottom surface of the lamp holder 200; the neutral wire conductive piece 500 is divided into a neutral wire external connection portion 510 located outside the lamp holder 200 and a neutral wire internal connection portion 520 inserted inside the lamp holder 200. The neutral wire internal connection portion 520 includes a neutral wire contact portion 521, a first inclined portion 522, a second inclined portion 523, and a neutral wire transition portion 524. The neutral wire transition portion 524 is located near the first inclined portion 522. At one end of the bottom surface of the lamp holder 200, the first inclined portion 522 is located at the end of the neutral wire contact portion 521 near the neutral wire transition portion 524, and the second inclined portion 523 is located at the end of the neutral wire contact portion 521 away from the neutral wire transition portion 524; both the first inclined portion 522 and the second inclined portion 523 are inclined relative to the inner wall of the lamp holder 200, and the distance between the end of the first inclined portion 522 and the neutral wire contact portion 521 and the inner wall of the lamp holder 200 is greater than the distance between the other end and the inner wall of the lamp holder 200.

[0029] Specifically, both the live wire conductive sheet 400 and the neutral wire conductive sheet 500 are copper sheets; the plastic screw design avoids the use of electrodes nested entirely in metal, thus greatly reducing the material cost of the conductive sheet, and the conductive sheet can use copper sheets with larger thicknesses as the material.

[0030] Specifically, each of the two terminals 300 is equipped with a label 310; the label 310 makes it easier for workers to distinguish whether the terminal 300 should be connected to the live wire or the neutral wire during installation.

[0031] The working principle of this material-saving plastic screw-type lamp holder in this embodiment is as follows:

[0032] The worker first connects the neutral wire conductive piece 500 and the live wire conductive piece 400 according to the markings on the terminal 300. Then, the bulb is installed. As the bulb is screwed into the lamp holder 200, the neutral wire contact 521 is squeezed against the bulb electrode. The slopes of the first inclined part 522 and the second inclined part 523 change their angle due to deformation, so that the neutral wire contact 521 and the bulb electrode are in close contact with each other due to elastic force. The bulb continues to be screwed into the bottom of the lamp holder 200, and the other electrode of the bulb begins to contact the live wire contact 421 of the live wire conductive piece 400. The bulb presses down on the live wire contact 421, causing the adjacent inclined part 422 to change its angle. The elastic force generated by this deformation makes the live wire contact 421 and the bulb electrode in stable contact.

[0033] The beneficial effects of this embodiment are: the inclined surfaces of the first inclined portion 522 and the inclined portion 422 can deform to change the tilt angle and generate elastic force, so that the neutral wire contact portion 521 and the live wire contact portion 421 are in stable contact with the electrodes of the bulb, effectively avoiding the problem of poor contact between the conductive sheet and the bulb.

[0034] Example 2

[0035] This embodiment is a second embodiment of a material-saving plastic screw-type lamp holder, such as... Figures 2 to 3 As shown, the difference from Embodiment 1 is as follows:

[0036] Specifically, the inner wall of the lamp holder 200 is provided with two sections of plastic semi-threads 210 along the circumferential direction. The two sections of plastic semi-threads 210 are arranged opposite each other, and the inner wall of the lamp holder 200 between the plastic semi-threads 210 is a sliding demolding surface 220. During the injection molding process, the plastic semi-threads 210 are directly injection molded from the threaded core and cavity of the mold. The setting of the sliding demolding surface 220 allows the threaded core to be pulled out without the need for complex mechanical mechanisms such as gears. Without affecting the use and installation of the lamp holder screw, the original complete thread is divided into two by the sliding demolding surface 220, achieving efficient demolding of the internal thread.

[0037] Specifically, the live wire transition part 423 abuts against the bottom surface of the lamp holder 200, and the neutral wire transition part 524 abuts against the sliding demolding surface 220; the sliding demolding surface 220 can also be used to place the neutral wire conductive piece 500, so that the bulb comes into contact with the neutral wire first during installation, avoiding installation safety problems, and also preventing the plastic thread 210 and the neutral wire conductive piece 500 from interfering with each other during bulb installation.

[0038] Specifically, a fixing wall 230 is provided on the inner side of the bottom of the lamp holder 200. The fixing wall 230 is located on the side close to the neutral conductor 500. The fixing wall 230 and the inner wall of the lamp holder 200 form a mounting groove 240. The neutral transition part 524 is at least partially located in the mounting groove 240. The neutral transition part 524 is installed in the mounting groove 240 to prevent the neutral conductor 500 from becoming loose.

[0039] The working principle of this material-saving plastic screw-type lamp holder in this embodiment is as follows:

[0040] During the molding and core-pulling process of the plastic semi-thread 210, the part of the thread core with the sliding demolding surface 220 formed is directly pulled out by the external core-pulling mechanism. The thread cores of the plastic semi-thread 210 on both sides slide into the space of the sliding demolding surface 220 between them, and the molded plastic semi-thread 210 separates from the thread core. At this time, the core-pulling continues to complete the separation of the entire thread core.

[0041] The beneficial effects of this embodiment are: the setting of the sliding demolding surface 220 realizes efficient demolding of the internal thread, effectively reduces the mold cost of the lamp holder, and at the same time provides a fitting surface for the installation of the neutral wire conductive piece 500, avoiding interference between the neutral wire conductive piece 500 and the plastic semi-thread 210.

[0042] Example 3

[0043] This embodiment is a third embodiment of a material-saving plastic screw-type lamp holder, such as... Figures 1 to 5 As shown, the difference from Embodiment 1 is as follows:

[0044] Furthermore, four mounting parts 600 are provided on the bottom outer side of the lamp holder 200, and the terminal block 300 is set on two of the mounting parts 600. Each mounting part 600 is provided with a first latch 700, and the lamp holder base plate 100 is provided with a first latch 110. The first latch 700 and the first latch 110 are engaged and connected. The mounting part 600 is provided with a total of four first latches 700 engagement structures, which are stable and reliable. This allows the terminal block 300 and the mounting part 600 to be produced using recycled materials, effectively reducing costs. Even if one latch fails, the product can still be used normally.

[0045] Furthermore, a second claw 120 is provided on the lamp holder base plate 100, and a second latch 810 is provided on the lamp holder housing 800. The second claw 120 and the second latch 810 are engaged and connected. The engagement connection method avoids the internal thread processing on the surface of the plastic parts and reduces processing costs.

[0046] Furthermore, the lamp holder housing 800 is provided with a through-hole 820. When the lamp holder housing 800 is installed, the lamp holder 200 is inserted into the through-hole 820; the through-hole 820 fits snugly with the lamp holder 200, improving the overall appearance of the lamp holder.

[0047] The working principle of this material-saving plastic screw-type lamp holder in this embodiment is as follows:

[0048] When installing parts, the first latch 700 is engaged with the first claw 110 to complete the installation of the lamp holder 200. Then, the through opening 820 is aligned with the lamp holder 200, and the second claw 120 is engaged with the second latch 810 to complete the installation of the lamp holder housing 800.

[0049] The beneficial effects of this embodiment are: the engaging structure of the four first bayonet slots 700 allows the terminal block 300 and the mounting part 600 to be produced using second-hand materials, effectively reducing costs, and ensuring normal product use even if one of the latches fails.

[0050] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0051] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A material-saving plastic screw cap lamp holder, comprising a lamp holder bottom plate (100), a lamp receiving cylinder (200) is installed on the lamp holder bottom plate (100), two wire posts (300) are arranged on the outer side of the bottom of the lamp receiving cylinder (200), a live wire conducting sheet (400) and a zero line conducting sheet (500) are respectively installed in the two wire posts (300), one end of the live wire conducting sheet (400) and the zero line conducting sheet (500) is fixedly connected with the wire post (300), the other end of the live wire conducting sheet (400) is inserted into the lamp receiving cylinder (200) and close to the bottom surface of the lamp receiving cylinder (200), the other end of the zero line conducting sheet (500) is inserted into the lamp receiving cylinder (200) and close to the side wall of the lamp receiving cylinder (200), characterized in that, The hot wire conductive sheet (400) is divided into a hot wire outer connecting part (410) located outside the lamp receiving barrel (200) and a hot wire inner connecting part (420) inserted into the lamp receiving barrel (200), the hot wire inner connecting part (420) comprises a hot wire contact part (421), an inclined part (422) and a hot wire transition part (423), the hot wire transition part (423) is located at one end of the inclined part (422) close to the inner wall of the lamp receiving barrel (200), the hot wire contact part (421) is located at one end of the inclined part (422) close to the center of the lamp receiving barrel (200), the inclined part (422) is inclined relative to the bottom surface of the lamp receiving barrel (200), and the distance between one end of the inclined part (422) close to the hot wire contact part (421) and the bottom surface of the lamp receiving barrel (200) is greater than the distance between the other end and the bottom surface of the lamp receiving barrel (200); the zero wire conductive sheet (500) is divided into a zero wire outer connecting part (510) located outside the lamp receiving barrel (200) and a zero wire inner connecting part (520) inserted into the lamp receiving barrel (200), the zero wire inner connecting part (520) comprises a zero wire contact part (521), a first inclined part (522), a second inclined part (523) and a zero wire transition part (524), the zero wire transition part (524) is located at one end of the first inclined part (522) close to the bottom surface of the lamp receiving barrel (200), the first inclined part (522) is located at one end of the zero wire contact part (521) close to the zero wire transition part (524), and the second inclined part (523) is located at one end of the zero wire contact part (521) away from the zero wire transition part (524); the first inclined part (522) and the second inclined part (523) are both arranged to be inclined relative to the inner wall of the lamp receiving barrel (200), and the distance between one end of the first inclined part (522) and the second inclined part (523) close to the zero wire contact part (521) and the inner wall of the lamp receiving barrel (200) is greater than the distance between the other end and the inner wall of the lamp receiving barrel (200).

2. A material-saving plastic screw base for a lamp as set forth in claim 1, wherein The inner wall of the lamp receiving barrel (200) is provided with two sections of plastic half threads (210) arranged in the circumferential direction, the two sections of plastic half threads (210) are oppositely arranged, and the inner wall of the lamp receiving barrel (200) between the two sections of plastic half threads (210) is a sliding demolding surface (220).

3. A plastic material screw base lamp holder with material saving according to claim 2, characterized in that, The hot wire transition part (423) abuts against the bottom surface of the lamp receiving barrel (200), and the zero wire transition part (524) abuts against the sliding demolding surface (220).

4. A plastic material screw base lamp holder with material saving according to claim 3, characterized in that, The inner side of the bottom of the lamp receiving barrel (200) is further provided with a fixing wall (230), the fixing wall (230) is located on the side close to the zero wire conductive sheet (500), the fixing wall (230) and the inner wall of the lamp receiving barrel (200) form a mounting groove (240), and the zero wire transition part (524) is at least partially located in the mounting groove (240).

5. The plastic material screw base lamp socket with material saving according to claim 1, wherein, The bottom outer side of the lamp receiving cylinder (200) is provided with four mounting portions (600), two of which are provided with the wire posts (300), and each of the mounting portions (600) is provided with a first clamping hole (700), and the lamp holder bottom plate (100) is provided with a first clamping jaw (110), and the first clamping hole (700) is clamped and connected with the first clamping jaw (110).

6. A plastic material screw base lamp socket with material saving according to claim 1, wherein, The live wire conducting sheet (400) and the zero line conducting sheet (500) are both copper sheets.

7. A plastic material screw base lamp socket with material saving according to claim 1, wherein The wire posts (300) are both provided with an identification portion (310).

8. A plastic material screw base for electric lamps according to any one of claims 1 to 7, characterized in that, The lamp holder bottom plate (100) is detachably connected with a lamp holder shell (800).

9. A plastic material screw base lamp holder with material saving according to claim 8, characterized in that, The lamp holder bottom plate (100) is provided with a second clamping jaw (120), and the lamp holder shell (800) is provided with a second clamping hole (810), and the second clamping jaw (120) is clamped and connected with the second clamping hole (810).

10. A plastic material screw base lamp holder with material saving according to claim 8, characterized in that, The lamp holder shell (800) is provided with a through hole (820), and when the lamp holder shell (800) is mounted, the lamp receiving cylinder (200) is inserted into the through hole (820).

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