Screw anti-falling device and box body

Abstract

The embodiment of the utility model provides a screw anti-falling device and a box body. Relates to the technical field of fasteners. The box body comprises a screw anti-falling device, and the screw anti-falling device comprises a screw and an anti-falling piece. The screw comprises a head and a rod which are connected, the rod comprises a threaded section and a sliding section, the threaded section is far away from the head relative to the sliding section, and the radial size of the threaded section is larger than that of the sliding section. The anti-disengaging piece is provided with a penetrating hole, a plurality of elastic pieces are connected to the inner wall of the penetrating hole in the circumferential direction at intervals, the free ends of the elastic pieces jointly define an assembly hole, the radial size of the assembly hole is larger than or equal to that of the sliding section, and the radial size of the assembly hole is smaller than that of the threaded section. In the process that the screw penetrates through the assembly hole, due to the fact that the radial size of the assembly hole is smaller than that of the threaded section, after the threaded section completely penetrates through the assembly hole, the free end of the elastic piece resets, and the threaded section is difficult to disengage from the assembly hole. Therefore, the screw is effectively prevented from falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, and in particular to a screw anti-slip device and a box body. Background Art

[0002] At present, the communication, telecommunication, electric power, transportation and other industries generally use outdoor communication, monitoring, lighting and other related equipment such as electrical boxes. When installing cables in the electrical boxes, it is often necessary to remove the panels of the electrical boxes.

[0003] The inventor has found through research that most of the existing panels of the electrical box are installed by means of screws, and after the panel is removed, the screws on the panel are easy to fall off. Utility Model Content

[0004] The utility model aims to provide a screw anti-dropping device, which can effectively prevent the screw from falling off when the screw is turned to remove the panel.

[0005] The embodiment of the utility model is achieved as follows:

[0006] In a first aspect, the utility model provides a screw anti-dropping device, comprising:

[0007] The screw comprises a head and a rod connected to each other, the rod comprises a threaded section and a sliding section, the threaded section is relatively far away from the head, and the radial dimension of the threaded section is greater than the radial dimension of the sliding section;

[0008] An anti-slip component is provided with a through hole, and a plurality of spring pieces are connected to the inner wall of the through hole at circumferential intervals. The spring piece includes a free end and a connecting end connected to the inner wall of the through hole. The free ends of the plurality of spring pieces jointly define an assembly hole. The aperture size of the assembly hole is greater than or equal to the radial size of the sliding section, and the radial size of the assembly hole is smaller than the radial size of the threaded section.

[0009] In an optional embodiment, the through hole includes a first end and a second end opposite to each other along its own axial direction, and the assembly hole is located on a side of the first end away from the second end.

[0010] In an optional embodiment, the width of the spring sheet gradually decreases in the direction from the connecting end to the free end, and the width direction of the spring sheet forms an angle with the axial direction of the assembly hole.

[0011] In an optional embodiment, the assembly hole and the through hole are coaxially arranged.

[0012] In an optional embodiment, the rod portion further includes an assembly section connected to the sliding section, the assembly section is located at an end of the sliding section away from the threaded section, the assembly section is connected to the head, and the radial dimension of the assembly section is greater than that of the sliding section.

[0013] In an optional embodiment, the rod also includes a shielding section connected to the head, the shielding section is located at the end of the assembly section away from the sliding section, the end of the shielding section away from the head is connected to the assembly section, and the radial dimension of the shielding section close to the assembly section is greater than the radial dimension of the assembly section.

[0014] In an optional embodiment, an arc groove is formed on the outer peripheral wall of the shielding segment.

[0015] In an optional embodiment, in a direction close to the head, the shielding section includes a first gradient section and a second gradient section, and in a direction close to the head, a radial dimension of the first gradient section gradually decreases, and a radial dimension of the second gradient section gradually increases.

[0016] In an optional embodiment, the head has anti-slip protrusions.

[0017] In a second aspect, the utility model provides a box body, comprising the screw anti-slip device of any one of the aforementioned embodiments.

[0018] The beneficial effects of the embodiments of the utility model are as follows: the embodiments of the utility model provide a screw anti-slip device and a box body. The box body includes a screw anti-slip device, and the screw anti-slip device includes a screw and an anti-slip member. The screw includes a head and a rod portion connected to each other, and the rod portion includes a threaded section and a sliding section. The threaded section is relatively far away from the head portion relative to the sliding section, and the radial dimension of the threaded section is greater than the radial dimension of the sliding section. The anti-slip member is provided with a through hole, and a plurality of spring pieces are connected to the inner wall of the through hole at circumferential intervals, and the spring piece includes a connecting end and a free end. The free ends of the plurality of spring pieces jointly define an assembly hole, and the radial dimension of the assembly hole is greater than or equal to the radial dimension of the sliding section, and the radial dimension of the assembly hole is smaller than the radial dimension of the threaded section. In the process of the screw passing through the assembly hole, since the radial dimension of the assembly hole is smaller than the radial dimension of the threaded section, the threaded section will cause multiple spring pieces to deform, so that the free ends of the spring pieces move along the screw penetration direction, thereby increasing the diameter of the assembly hole until the threaded section penetration conditions are met. When the threaded section completely passes through the assembly hole, the free end of the spring piece is reset. After the free end of the spring piece is reset, the radial dimension of the assembly hole is smaller than the radial dimension of the threaded section, so the threaded section is difficult to fall out of the assembly hole, thereby effectively preventing the screw from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model 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 creative work.

[0020] Figure 1A schematic diagram of the structure of the panel and screw anti-slip device provided by an embodiment of the utility model at a first viewing angle;

[0021] Figure 2 A schematic diagram of the structure of the panel and the screw anti-slip device provided by an embodiment of the utility model at a second viewing angle;

[0022] Figure 3 A schematic diagram of the structure of a screw anti-slip device provided in an embodiment of the utility model;

[0023] Figure 4 A schematic structural diagram of an anti-dropping member provided in an embodiment of the utility model.

[0024] Icon: 100-panel; 110-first side; 120-second side; 130-mounting hole; 200-screw; 210-head; 211-anti-slip protrusion; 220-rod; 221-threaded section; 222-sliding section; 223-assembly section; 224-shielding section; 2241-first gradient section; 2242-second gradient section; 300-anti-slip member; 310-perforation; 311-first end; 312-second end; 320-spring; 321-connecting end; 322-free end; 323-assembly hole. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does 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 cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0029] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The specific structure of a screw anti-slip device provided by an embodiment of the utility model and the corresponding technical effects it brings are described in detail below in conjunction with the patent drawings.

[0032] Please refer to Figure 1-Figure 4 A screw anti-slip device provided in an embodiment of the utility model includes a screw 200 and an anti-slip member 300.

[0033] The screw 200 includes a head 210 and a rod 220 connected to each other. The rod 220 includes a threaded section 221 and a sliding section 222. The threaded section 221 is away from the head 210 relative to the sliding section 222, and the radial dimension of the threaded section 221 is greater than the radial dimension of the sliding section 222. Among them, one end of the sliding section 222 away from the threaded section 221 is connected to the head 210. It should be noted that the sliding section 222 can be directly connected to the head 210, or indirectly connected to the head 210.

[0034] The anti-dropping member 300 is provided with a through hole 310, and a plurality of spring pieces 320 are connected to the inner wall of the through hole 310 at intervals in the circumferential direction. The spring piece 320 includes a free end 322 and a connection end 321 connected to the inner wall of the through hole 310. In other words, the plurality of spring pieces 320 are arranged at intervals in the circumferential direction along the inner wall of the through hole 310.

[0035] The free ends 322 of the plurality of spring sheets 320 jointly define an assembly hole 323 . The radial dimension of the assembly hole 323 is greater than or equal to the radial dimension of the sliding section 222 , and the radial dimension of the assembly hole 323 is smaller than the radial dimension of the threaded section 221 .

[0036] It can be understood that in the process of the screw 200 passing through the assembly hole 323, since the radial dimension of the assembly hole 323 is smaller than the radial dimension of the threaded segment 221, the threaded segment 221 will cause multiple spring pieces 320 to deform, so that the free end 322 of the spring piece 320 moves along the penetration direction of the screw 200, thereby increasing the aperture of the assembly hole 323 until the penetration condition of the threaded segment 221 is met. When the threaded segment 221 completely passes through the assembly hole 323, the free end 322 of the spring piece 320 is reset. Due to the setting of the sliding segment 222 and the radial dimension of the sliding segment 222 is smaller than the radial dimension of the assembly hole 323, the sliding segment 222 can move freely along its own axial direction relative to the assembly hole 323, so as to realize the distance that the screw 200 moves along the axial direction when the threaded segment 221 is screwed.

[0037] After the free end 322 of the spring piece 320 is reset, the radial dimension of the assembly hole 323 is smaller than the radial dimension of the threaded section 221 . Therefore, the threaded section 221 is difficult to escape from the assembly hole 323 .

[0038] When the screw anti-dropout device is assembled with the panel 100, the panel 100 has a first side 110 and a second side 120 for assembling with the electrical box, the first side 110 and the second side 120 are arranged opposite to each other, the panel 100 is provided with a mounting hole 130 penetrating the first side 110 and the second side 120, the anti-dropout member 300 is located at the first side 110 of the panel 100, the screw 200 is inserted into the mounting hole 130 along the mounting hole 130 from the second side 120 until the threaded section 221 passes through the assembly hole 323 of the anti-dropout member 300, at which time the head 210 of the screw 200 is located at the second side 120 of the panel 100. When it is necessary to assemble with the electrical box, the user can turn the screw 200 so that the threaded section 221 is assembled with the threaded hole of the electrical box.

[0039] When loosening the screw 200 and removing the panel 100, due to the setting of the anti-slip component 300 and the radial dimension of the threaded segment 221 on the screw 200 being larger than the radial dimension of the assembly hole 323, it is difficult for the screw 200 to slip out of the assembly hole 323, thereby effectively preventing the screw 200 from falling off when tightening the screw 200.

[0040] Optionally, the through hole 310 includes a first end 311 and a second end 312 opposite to each other along its own axis direction, that is, the through hole 310 has a first end 311 and a second end 312 opposite to each other along its own axis direction, and the assembly hole 323 is located on a side of the first end 311 away from the second end 312 .

[0041] In other words, in the present embodiment, the direction from the connection end 321 to the free end 322 of the spring piece 320 forms an angle with the axial direction of the through hole 310. It can be understood that, through the above arrangement, when the anti-dropping member 300 is installed on the panel 100, the free end 322 is away from the first side 110 of the panel 100 relative to the connection section, and when the screw 200 is assembled, it is convenient for the threaded section 221 of the screw 200 to drive the free end 322 to deform, thereby increasing the assembly hole 323, and when the screw 200 is loosened, the free end 322 can further limit the threaded section 221 from moving in the axial direction toward the second side 120 of the panel 100, further ensuring that the screw 200 will not easily fall out.

[0042] Optionally, in order to facilitate the threaded section 221 to more easily deform the free end 322 of the spring piece 320 and pass through the assembly hole 323, the width dimension of the spring piece 320 gradually decreases in the direction from the connection end 321 to the free end 322, that is, the width dimension of the connection end 321 of the spring piece 320 is greater than the width dimension of the free end 322 of the spring piece 320. The width direction of the spring piece 320 forms an angle with the axial direction of the assembly hole 323.

[0043] Of course, in some other optional embodiments, the width dimension of the free end 322 of the elastic sheet 320 may also be equal to the width dimension of the connecting section of the elastic sheet 320 .

[0044] Optionally, the assembly hole 323 is coaxially arranged with the through hole 310 , that is, the length dimension from the connecting end 321 to the free end 322 of each elastic piece 320 is the same, and each elastic piece 320 extends toward the axis of the through hole 310 .

[0045] Of course, in some other embodiments, the assembly hole 323 may also be arranged coaxially with the through hole 310 .

[0046] Optionally, the rod 220 further includes an assembly section 223 connected to the sliding section 222, the assembly section 223 is located at one end of the sliding section 222 away from the threaded section 221, and the assembly section 223 is connected to the head 210, and the assembly section 223 can be directly connected to the head 210 or indirectly connected to the head 210. The radial dimension of the assembly section 223 is larger than that of the sliding section 222.

[0047] In detail, in the present embodiment, the assembly section 223 is used to cooperate with the installation hole 130 of the panel 100 to ensure that the screw 200 will not easily shake in the installation hole 130 after installation.

[0048] It is understandable that in order to facilitate the threaded segment 221 to pass through the mounting hole 130 , the radial dimension of the threaded segment is not larger than the radial dimension of the mounting hole 130 , that is, the radial dimension of the assembly segment 223 may be equal to or larger than the radial dimension of the threaded segment 221 .

[0049] Optionally, the rod 220 further includes a shielding section connected to the head 210, the shielding section 224 is located at one end of the assembly section 223 away from the sliding section 222, the end of the shielding section 224 away from the head 210 is connected to the assembly section 223, and the radial dimension of the shielding section 224 near the assembly section 223 is greater than the radial dimension of the assembly section 223. In detail, the radial dimension of the shielding section 224 near the assembly section 223 is also greater than the radial dimension of the mounting hole 130 on the panel 100. It can be understood that when the screw 200 passes through the mounting hole 130 on the panel 100, the shielding section 224 can shield the mounting hole 130 on the panel 100 to ensure aesthetics.

[0050] Furthermore, the shielding section 224 can raise the head 210 , thereby increasing the distance between the head 210 and the panel 100 , making it easier for the user to screw the screw 200 .

[0051] In detail, in the direction close to the head 210, the shielding section 224 includes a first gradient section 2241 and a second gradient section 2242, and in the direction close to the head 210, the radial dimension of the first gradient section 2241 gradually decreases, and the radial dimension of the second gradient section 2242 gradually increases.

[0052] In order to ensure that the user can hold the screw 200 firmly and prevent the screw 200 from being easily loosened, the head 210 of the screw 200 also has an anti-slip protrusion 211. In detail, the anti-slip protrusion 211 is located on the side wall of the head 210.

[0053] The utility model also provides a box body, which includes a box body, a panel 100 and the above-mentioned screw anti-dropping device. It should be noted that the box body can be understood as the above-mentioned electrical box. Of course, in other embodiments, the box body is not limited to the electrical box, but can also be other types of box bodies.

[0054] In summary, the embodiment of the utility model provides a screw anti-slip device and a box. The box includes a screw anti-slip device, and the screw anti-slip device includes a screw 200 and an anti-slip member 300. The screw 200 includes a head 210 and a rod 220 connected to each other, and the rod 220 includes a threaded section 221 and a sliding section 222. The threaded section 221 is away from the head 210 relative to the sliding section 222, and the radial dimension of the threaded section 221 is greater than the radial dimension of the sliding section 222. The anti-slip member 300 is provided with a through hole 310, and the inner wall of the through hole 310 is circumferentially spaced and connected with a plurality of spring pieces 320, and the spring piece 320 includes a connecting end 321 and a free end 322. The free ends 322 of the plurality of spring pieces 320 jointly define an assembly hole 323, and the radial dimension of the assembly hole 323 is greater than or equal to the radial dimension of the sliding section 222, and the radial dimension of the assembly hole 323 is smaller than the radial dimension of the threaded section 221. During the process of the screw 200 passing through the assembly hole 323, since the radial dimension of the assembly hole 323 is smaller than the radial dimension of the threaded section 221, the threaded section 221 will cause the multiple spring pieces 320 to deform, so that the free ends 322 of the spring pieces 320 move along the penetration direction of the screw 200, thereby increasing the aperture of the assembly hole 323 until the penetration condition of the threaded section 221 is met. When the threaded section 221 completely passes through the assembly hole 323, the free ends 322 of the spring pieces 320 are reset. After the free ends 322 of the spring pieces 320 are reset, the radial dimension of the assembly hole 323 is smaller than the radial dimension of the threaded section 221, so the threaded section 221 is difficult to fall out of the assembly hole 323. This effectively prevents the screw 200 from falling off.

[0055] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A screw anti-slip device, characterized in that: include: A screw (200), the screw (200) comprising a head (210) and a rod (220) connected to each other, the rod (220) comprising a threaded section (221) and a sliding section (222), the threaded section (221) being away from the head (210) relative to the sliding section (222), and the radial dimension of the threaded section (221) being greater than the radial dimension of the sliding section (222); An anti-slip component (300) is provided with a through hole (310), and a plurality of spring pieces (320) are connected to the inner wall of the through hole (310) at circumferential intervals, and the spring piece (320) includes a free end (322) and a connecting end (321) connected to the inner wall of the through hole (310), and the free ends (322) of the plurality of spring pieces (320) jointly define an assembly hole (323), and the aperture size of the assembly hole (323) is greater than or equal to the radial size of the sliding section (222), and the radial size of the assembly hole (323) is smaller than the radial size of the threaded section (221).

2. The screw anti-slip device according to claim 1, characterized in that: The through hole (310) comprises a first end (311) and a second end (312) which are opposite to each other along the axis direction thereof, and the assembly hole (323) is located on a side of the first end (311) away from the second end (312).

3. The screw anti-slip device according to claim 1, characterized in that: In the direction from the connecting end (321) toward the free end (322), the width dimension of the elastic sheet (320) gradually decreases, and the width direction of the elastic sheet (320) forms an angle with the axial direction of the assembly hole (323).

4. The screw anti-slip device according to claim 1, characterized in that: The assembly hole (323) is coaxially arranged with the through hole (310).

5. The screw anti-slip device according to claim 1, characterized in that: The rod portion (220) further comprises an assembly section (223) connected to the sliding section (222); the assembly section (223) is located at an end of the sliding section (222) away from the threaded section (221); the assembly section (223) is connected to the head (210); and the radial dimension of the assembly section (223) is greater than that of the sliding section (222).

6. The screw anti-slip device according to claim 5, characterized in that: The rod portion (220) further comprises a shielding section (224) connected to the head portion (210); the shielding section (224) is located at an end of the assembly section (223) away from the sliding section; the end of the shielding section (224) away from the head portion (210) is connected to the assembly section (223); and the radial dimension of the shielding section (224) at an end close to the assembly section (223) is greater than the radial dimension of the assembly section (223).

7. The screw anti-slip device according to claim 6, characterized in that: An arc groove is formed on the outer peripheral wall of the shielding section (224).

8. The screw anti-slip device according to claim 6, characterized in that: In a direction close to the head (210), the shielding section (224) comprises a first gradient section (2241) and a second gradient section (2242); in a direction close to the head (210), the radial dimension of the first gradient section (2241) gradually decreases, and the radial dimension of the second gradient section (2242) gradually increases.

9. A box, characterized in that: The invention comprises the screw anti-slip device according to any one of claims 1 to 8.

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