Plug-in and twist-lock type anti-disassembly structure

Abstract

The application discloses a plug-in and rotary locking type anti-disassembly structure, which comprises a first sleeve rod and a second sleeve rod, and further comprises a first fixing part and a second fixing part which are respectively fixedly embedded in the end part of the first sleeve rod and the end part of the second sleeve rod; the first fixing part is formed with a plug-in part extending to the periphery of the end part of the first sleeve rod in the axial direction; the second fixing part is formed with a plug-in groove extending in the axial direction and used for plug-in cooperation of the plug-in part; the plug-in part and the plug-in groove can be relatively rotary locked and clamped; the plug-in part is fixedly sleeved with a locking ring, and the locking ring is formed with at least one locking elastic sheet extending in the opposite direction of the rotary locking direction; the locking elastic sheet can be reversely abutted against the end part of the second fixing part.

Description

Technical Field

[0001] This invention relates to the technical field of anti-tamper structure design, and in particular to a plug-in rotary lock type anti-tamper structure. Background Technology

[0002] Existing floor lamps, table lamps, and other lighting fixtures are generally designed with a modular assembly structure for easy product transportation and packaging. Consumers assemble them themselves after receiving the product. For the assembly between the lamp post and the lamp holder / lamp head, a threaded connection is commonly used. However, this type of threaded connection is prone to accidental unscrewing in actual use, leading to loosening, falling off, or other abnormalities. To address this issue, the applicant previously had a patent, "CN218846000U A Lamp Post Anti-Disassembly Connection Structure," which uses a limiting block made of elastic material in the first connecting member to engage with the limiting groove of the second connecting member, preventing the second connecting member from rotating in the reverse direction while not preventing it from rotating in the forward direction. This achieves an anti-disassembly connection between the first and second posts, effectively providing a lock-in effect. However, this anti-disassembly structure is still not perfect, especially for ordinary consumers. The connection and assembly operation is still relatively complex, and some consumers cannot assemble it themselves, limiting its versatility. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a plug-in rotary lock anti-disassembly structure with features such as easy assembly and self-locking upon rotation.

[0004] To achieve the above objectives, the present invention provides a plug-in rotary lock anti-tamper structure, comprising a first sleeve rod and a second sleeve rod, and further comprising a first fixing part and a second fixing part respectively fixedly embedded in the end of the first sleeve rod and the end of the second sleeve rod. The first fixing part is formed with a plug-in part extending axially to the periphery of the end of the first sleeve rod, and the second fixing part is formed with a plug-in groove extending axially for the plug-in part to plug into and cooperate with. The plug-in part and the plug-in groove can be rotary locked relative to each other. The plug-in part is fixedly fitted with a locking ring, and the locking ring is formed with at least one locking spring piece extending obliquely in the opposite direction to the rotary locking direction. The locking spring piece can abut against the end of the second fixing part to prevent backflow.

[0005] Furthermore, a positioning part is protruding from the circumference of the first fixing part and / or the second fixing part, and correspondingly, a positioning groove is formed at the end of the first sleeve rod and / or the end of the second sleeve rod for the positioning part to engage.

[0006] Furthermore, the head end of the plug portion is formed with at least one locking block, and the second fixing portion is formed with at least one locking groove that communicates with the plug groove and allows the locking block to be rotated and locked.

[0007] Furthermore, the inner wall of the insertion slot is provided with at least one guide groove that extends axially and allows the locking block to pass through.

[0008] Furthermore, the end face of the second fixing part is formed with at least one limiting block. When the first fixing part and the second fixing part are locked together, the locking spring contactes the limiting block, causing the locking spring to be pressed upward to avoid the limiting block. When the first fixing part and the second fixing part are loosened, the locking spring can contact the limiting block, causing the pointed spring to be pressed downward to block the limiting block.

[0009] Furthermore, the limiting block is provided with a front stop and a rear stop in the upstream and downstream directions of the lock direction, respectively. The front stop is a guide slope that extends upward along the lock direction, and the rear stop is a blocking surface that extends axially.

[0010] Furthermore, the locking ring is formed with multiple ring-shaped fixing pieces, and the end face of the first fixing part is provided with multiple fixing holes for each fixing piece to be inserted and matched. The outer side of the fixing piece is formed with protrusions that engage with the inner wall of the fixing hole.

[0011] Furthermore, the first fixing part is formed with a through hole extending to the head end of the plug part, and a wire guard is installed at the through hole, and the wire guard is formed with a through hole communicating with the through hole.

[0012] The present invention adopts the above-mentioned solution, and its beneficial effects are as follows: 1) By inserting the plug part and the plug groove into each other, and by rotating and locking the plug part and the plug groove relative to each other, the plug-in quick-installation operation between the first sleeve rod and the second sleeve rod can be realized; 2) By setting a locking ring and forming a locking spring piece that extends obliquely in the opposite direction of the rotation locking direction, the locking spring piece can be used to prevent back contact with the end of the second fixing part, thereby realizing the anti-disassembly function. Attached Figure Description

[0013] Figure 1-2 This is an exploded view of the plug-in rotary lock anti-tamper structure.

[0014] Figure 3 This is an exploded view of the first fixing part and the second fixing part.

[0015] Figure 4 This is an exploded view of the first fixing part and the locking ring.

[0016] Figure 5 This is a schematic diagram of the second fixing part.

[0017] Figure 6 for Figure 5 Enlarged view of part A in the middle.

[0018] Figure 7This is a schematic diagram showing the first and second fixing parts not locked together.

[0019] Figure 8 This is a schematic diagram showing the locking spring and the limit stop engaged without being rotated and locked.

[0020] Figure 9 This is a schematic diagram showing the first and second fixing parts locked together.

[0021] Figure 10 This is a schematic diagram showing the locking spring and the limit stop engaged in a twisted lock.

[0022] Among them, 1-first sleeve rod, 2-second sleeve rod, 3-first fixing part, 31-insertion part, 32-locking block, 311-threading hole, 33-fixing hole, 4-second fixing part, 41-insertion groove, 42-guide groove, 43-locking groove, 44-limiting block, 441-front face, 442-rear face, 5-locking ring, 51-locking spring, 52-fixing piece, 521-protrusion, 6-positioning part, 7-wire protector plug. Detailed Implementation

[0023] To facilitate understanding of the present invention, a more complete description is given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0024] See appendix Figure 1-10 As shown, in this embodiment, a plug-in twist-lock anti-tamper structure is applicable between two adjacent sleeves (or lamp posts) of a lamp fixture. Specifically, it includes a first sleeve 1, a second sleeve 2, a first fixing part 3, and a second fixing part 4. The first fixing part 3 and the second fixing part 4 are respectively fixedly embedded in the end of the first sleeve 1 and the end of the second sleeve 2 (the first fixing part 3 and the first sleeve 1, and the second fixing part 4 and the second sleeve 2 are in an interference fit). The first fixing part 3 and the second fixing part 4 are both columnar structures that match the inner cavity shape of the first sleeve 1 and the second sleeve 2.

[0025] See appendix Figure 2 As shown, in this embodiment, a positioning part 6 is protruding from the circumferential surface of the first fixing part 3 and / or the second fixing part 4. Correspondingly, a positioning groove is formed at the end of the first sleeve rod 1 and / or the end of the second sleeve rod 2 for the positioning part 6 to engage. By utilizing the engaging action of the positioning part 6 and the positioning groove, it is ensured that the first sleeve rod 1 and the second fixing part 4, and the second sleeve rod 2 and the second fixing part 4 rotate synchronously.

[0026] See appendix Figure 3-6As shown, in this embodiment, the first fixing part 3 is formed with an insertion part 31 extending axially to the periphery of the end of the first sleeve rod 1, and the second fixing part 4 is formed with an insertion groove 41 extending axially and for the insertion part 31 to be inserted into. The insertion part 31 has a columnar structure, and correspondingly, the shape of the insertion groove 41 is a cylindrical structure that matches the shape of the insertion part 31. Furthermore, the insertion part 31 and the insertion groove 41 can be locked together by rotation. Thus, firstly, the insertion part 3 and the insertion groove 41 are connected by insertion (closing the ends of the first sleeve rod 1 and the second sleeve rod 2), and then, by rotating the first sleeve rod 1 and / or the second sleeve rod 2 (equivalent to the first fixing part 3 and the second fixing part 4) in opposite directions, the insertion part 31 and the insertion groove 41 can be locked together by rotation, thus securing the first fixing part 3 and the second fixing part 4 together (secured the first sleeve rod 1 and the second sleeve rod 2).

[0027] In this embodiment, the head end of the insertion part 31 is formed with at least one locking block 32, and the second fixing part 4 is formed with at least one locking groove 43 that communicates with the insertion groove 41 and allows the locking block to be rotated and locked (preferably, the locking groove 43 is located at the tail end of the second fixing part 4). In this embodiment, three locking blocks 32 are arranged around the head end of the insertion part 31, and correspondingly, the second fixing part 4 is formed with three locking grooves 43 for the three locking blocks 32 to be rotated and locked in a one-to-one manner. That is, as the first fixing part 3 and the second fixing part 4 rotate relative to each other, the locking blocks 32 are simultaneously rotated and slid into the locking grooves 43, thus completing the rotation and locking operation and restricting the axial movement between the insertion part 31 and the insertion groove 41.

[0028] Furthermore, the inner wall of the insertion groove 41 is provided with at least one guide groove 42 that extends axially and allows the locking block 32 to pass through. Specifically, in this embodiment, three guide grooves 42 are provided for the three locking blocks 32 to pass through respectively. During the insertion of the insertion part 31 into the insertion groove 41, each locking block 32 moves along the guide groove 42.

[0029] Furthermore, the front end face of the locking block 32 along the locking direction is formed with a locking slope extending downward along the locking direction. The locking slope is guided and abutted against the inner wall of the locking groove 43, thereby changing the locking block 32 to slide into the locking groove 43.

[0030] For ease of explanation, the direction in which the locking block 32 rotates and slides into the locking groove 43 is defined as the locking direction, and conversely, the direction in which the locking block 32 rotates and slides out of the locking groove 43 is defined as the loosening direction.

[0031] See appendix Figure 3 and 4As shown, in this embodiment, a locking ring 5 is also included, which is fixedly sleeved on the insertion part 31. The locking ring 5 is arranged near the tail end of the insertion part 31. Specifically, the locking ring 5 is formed with a plurality of annularly distributed fixing pieces 52. Each fixing piece 52 is integrally bent and formed on the locking ring 5 towards the end face of the first fixing part 3. The end face of the first fixing part 3 has a plurality of fixing holes 33 for each fixing piece 52 to be inserted and fitted. The outer side of the fixing piece 52 is formed with a protrusion 521 that engages with the inner wall of the fixing hole 33. That is, after the fixing piece 52 is inserted into the fixing hole 33, the protrusion 521 engages with the step or concave position of the inner wall of the fixing hole 33, which plays a fastening role and restricts the rotation of the locking ring 5. The locking ring 5 is formed with at least one locking spring piece 51 extending obliquely in the opposite direction to the locking direction. The locking spring piece 51 can abut against the end of the second fixing part 4, so that after the insertion part 31 and the insertion groove 41 are locked together, the locking spring piece 51 can restrict the first sleeve rod 1 and the second sleeve rod 2 from loosening, thus achieving the effect of preventing disassembly.

[0032] Further details can be found in the appendix. Figure 6 As shown, the end face of the second fixing part 4 in this embodiment is formed with at least one limiting block 44. Preferably, this embodiment provides three locking spring pieces 51 arranged in a ring on the locking ring 5. Correspondingly, the second fixing part 4 is formed with three limiting blocks 44, and each limiting block 44 corresponds to each locking spring piece. Thus, by using the limiting blocks 44 to prevent backflow and contact with the locking spring pieces 51, an anti-disassembly effect is achieved.

[0033] To facilitate understanding of the aforementioned anti-reverse interference, further explanation is provided here in conjunction with the underlying principle. Specifically, when the insertion part 31 is inserted into the insertion slot 41, see the attached diagram. Figure 7 and 8 As shown and with reference to the direction of the lock, the locking spring piece 51 is positioned upstream of the limiting block 44. After insertion, see the attached diagram. Figure 9 As shown, the first sleeve rod 1 and / or the second sleeve rod 2 are screwed on opposite sides to tighten them so that the insertion part 31 and the insertion groove 41 are locked together (actually, the locking block 32 rotates and slides into the locking groove 43). At the same time, see the attached diagram. Figure 10As shown, the locking ring 5 rotates synchronously with the first sleeve rod 1 / first fixing part 3 in the lock direction, so that the limiting block 44 will contact the outer surface of the locking spring 51. At this time, the limiting block 44 exerts a force on the locking spring 51 opposite to the tightening direction, causing the locking spring 51 to be compressed and deformed upward in the direction of the compression space formed between it and the locking ring 5 to avoid the limiting block 44. Finally, after the insertion part 31 and the insertion groove 41 are locked in place, the locking spring 51 also completely jumps over the limiting block 44 (so that the locking spring 51 is located downstream of the limiting block 44). Conversely, when the first sleeve rod 1 and / or the second sleeve rod 2 are loosened in opposite directions, the locking ring 5 rotates synchronously with the first sleeve rod 1 / first fixing part 3 in the loosening direction, thereby causing the limiting block 44 to contact the end and / or inner surface of the locking spring piece 51. At this time, the limiting block 44 exerts a force on the locking spring piece 51 in the opposite direction to the loosening direction, causing the spring piece to be compressed and deformed downwards away from the compression space to block the limiting block 44, thus preventing the first sleeve rod 1 and / or the second sleeve rod 2 from continuing to loosen (equivalent to preventing the locking block 32 from rotating out of the locking groove 43), and finally achieving the restriction of the first fixing part 3 and the second fixing part 4 to rotate relative to each other for unlocking.

[0034] In this embodiment, each limiting block 44 is provided with a front stop 441 and a rear stop 442 upstream and downstream of the locking direction, respectively. The front stop 441 is a guide slope extending upward along the locking direction. During the tightening operation, the front stop 441 of the limiting block 44 contacts the outer surface of the locking spring 51, and with the guidance of the guide slope, the locking spring 51 can smoothly swing upward and deform to jump over the limiting block 44. The rear stop 442 is a blocking surface extending axially. During the loosening operation, the rear stop 442 of the limiting block 44 contacts the end and / or inner surface of the locking spring 51, and with the obstruction of the single surface, the locking spring 51 is prevented from jumping over the limiting block 44.

[0035] In this embodiment, the first fixing part 3 is formed with a through hole 311 extending to the end of the plug-in part 31. Furthermore, a wire protector 7 is fitted into the through hole 311, and the wire protector 7 is formed with a through hole communicating with the through hole 311. This allows the power cord pre-installed in the first sleeve 1 and the second sleeve 2 to pass through the through hole 311 and the through hole, thereby protecting the power cord and preventing frictional contact between the power cord and the tail end of the second fixing part 4 and / or the locking block of the first fixing part 3, thus avoiding a safety accident of damage and leakage.

[0036] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any modifications or variations made by those skilled in the art, without departing from the scope of the present invention, using the disclosed technical content, are equivalent embodiments of the present invention. Therefore, all equivalent changes made based on the concept of the present invention without departing from the scope of the present invention should be covered within the protection scope of the present invention.

Claims

1. A plug-in twist-lock type anti-tamper structure, comprising a first sleeve rod (1) and a second sleeve rod (2), characterized in that: It also includes a first fixing part (3) and a second fixing part (4) respectively fixedly embedded in the end of the first sleeve rod (1) and the end of the second sleeve rod (2). The first fixing part (3) is formed with a plug-in part (31) extending axially to the periphery of the end of the first sleeve rod (1). The second fixing part (4) is formed with a plug-in groove (41) extending axially and for the plug-in part (31) to be plugged in. The plug-in part (31) and the plug-in groove (41) can be locked relative to each other. The plug-in part (31) is fixedly fitted with a locking ring (5) and the locking ring (5) is formed with at least one locking spring piece (51) extending obliquely in the opposite direction of the locking direction. The locking spring piece (51) can abut against the end of the second fixing part (4). The plug-in part (31) has at least one locking block (32) formed at its head end, and the second fixing part (4) has at least one locking groove (43) that communicates with the insertion groove (41) and allows the locking block to be rotated and locked. The end face of the second fixing part (4) has at least one limiting block (44). When the first fixing part (3) and the second fixing part (4) are rotated and locked in opposite directions, the locking spring (51) contacts the limiting block (44) so ​​that the locking spring (51) is pressed and swings upward to avoid the limiting block (44). When the first fixing part (3) and the second fixing part (4) are rotated and loosened in opposite directions, the locking spring (51) can contact the limiting block (44) so ​​that the pointed spring is pressed and swings downward to block the limiting block (44).

2. The plug-in rotary lock type anti-tamper structure according to claim 1, characterized in that: The first fixing part (3) and / or the second fixing part (4) have a positioning part (6) protruding from their circumference. Correspondingly, the end of the first sleeve rod (1) and / or the end of the second sleeve rod (2) are formed with positioning grooves for the positioning part (6) to engage.

3. The plug-in rotary lock type anti-tamper structure according to claim 1, characterized in that: The inner wall of the insertion slot (41) is provided with at least one guide slot (42) that extends axially and through which the locking block (32) passes.

4. The plug-in rotary lock type anti-tamper structure according to claim 1, characterized in that: The limiting block (44) is provided with a front stop (441) and a rear stop (442) upstream and downstream of the lock direction, respectively. The front stop (441) is a guide slope that extends upward along the lock direction; the rear stop (442) is a blocking surface that extends axially.

5. The plug-in rotary lock type anti-tamper structure according to claim 1, characterized in that: The locking ring (5) is formed with a plurality of ring-shaped fixing pieces (52). The end face of the first fixing part (3) is provided with a plurality of fixing holes (33) for each fixing piece (52) to be inserted and matched. The outer side of the fixing piece (52) is formed with a protrusion (521) that engages with the inner wall of the fixing hole (33).

6. The plug-in rotary lock type anti-tamper structure according to claim 1, characterized in that: The first fixing part (3) is formed with a through hole (311) extending through to the end of the plug part (31). A wire protector (7) is installed in the through hole (311) and the wire protector (7) is formed with a through hole communicating with the through hole (311).

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