Screw self-locking structure and remote controller

Abstract

The screw self-locking structure comprises a connecting piece and a self-locking assembly, the connecting piece comprises a nut and a screw rod, the nut is arranged at one end of the screw rod, the screw rod comprises a threaded connecting part, the self-locking assembly comprises a first connecting structure and a second connecting structure, a blocking ring is formed on the inner wall of the first connecting structure, and the blocking ring is arranged on the inner wall of the second connecting structure. The blocking ring is provided with a guide hole, the outer diameter of the nut is larger than the inner diameter of the guide hole, the outer diameter of the threaded connecting part is larger than the inner diameter of the guide hole, the second connecting structure is arranged at the bottom of the first connecting structure in the axial direction, and the second connecting structure is provided with a mounting bottom hole communicated with the guide hole. During connection, the screw rod penetrates through the guide hole, the threaded connecting part is connected with the mounting bottom hole, and the first connecting structure and the second connecting structure are kept connected through the connecting piece. Meanwhile, the risk that the connecting piece falls out is effectively avoided, children are prevented from swallowing by mistake, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screw fastening, in particular to a screw self-locking structure and a remote controller. Background Art

[0002] Screws are a type of fastener that can usually be used in conjunction with nuts to combine several components into a component, and can be easily assembled and disassembled. Screws are commonly used in various fields, such as the connection of the shell of a remote control.

[0003] The parts inside the remote control are usually small. If the parts fall out, they can be swallowed by children. Therefore, many countries have introduced regulations requiring handheld remote controls to be fixed with screws to prevent the parts inside the remote control from falling out and to prevent children from touching them. However, screws may become loose or fall off during daily use.

[0004] In the prior art, in order to prevent the screws from loosening, an additional anti-loosening washer is usually provided to achieve the anti-loosening effect. However, in actual use, the size of the washer used for the handheld remote control is small, and the steps in the actual production and assembly process of the handheld remote control are complicated, which makes the production and assembly efficiency low. Utility Model Content

[0005] In view of the deficiencies in the prior art, a screw self-locking structure and a remote controller are provided.

[0006] To achieve the above-mentioned purpose, the utility model provides a screw self-locking structure, including a connecting piece and a self-locking component, the connecting piece includes a nut and a screw, the nut is arranged at one end of the screw, the screw includes a threaded connection part, the self-locking component includes a first connecting structure and a second connecting structure, the inner wall of the first connecting structure is formed with a blocking ring, the blocking ring has a guide hole, the outer diameter of the nut is larger than the inner diameter of the guide hole, the outer diameter of the threaded connection part is larger than the inner diameter of the guide hole, the second connecting structure is axially arranged at the bottom of the first connecting structure, the second connecting structure is provided with a mounting bottom hole, the mounting bottom hole is connected to the guide hole, and the inner diameter of the mounting bottom hole is smaller than the outer diameter of the threaded connection part, when connected, the screw passes through the guide hole, and the threaded connection part is connected to the mounting bottom hole.

[0007] According to an embodiment of the present invention, the depth L1 of the mounting bottom hole is greater than or equal to the length L2 of the threaded connection portion.

[0008] According to one embodiment of the present invention, the blocking ring has a first surface and a second surface that are arranged opposite to each other, the nut abuts against the first surface, and a spacing position is formed between the second surface and the second connecting structure, and the depth L3 of the spacing position is less than the length L2 of the threaded connection portion.

[0009] According to an embodiment of the present invention, the length L2 of the threaded connection portion is less than the sum of the length L3 of the spacing portion and the length of the mounting bottom shell.

[0010] According to one embodiment of the utility model, the screw rod also includes a polished rod portion, one end of the polished rod portion is connected to the nut, the other end of the polished rod portion is connected to the threaded connection portion, and the diameter of the polished rod portion is less than or equal to the inner diameter of the guide hole.

[0011] According to one embodiment of the present invention, the connecting piece is a half-thread self-tapping screw.

[0012] According to an embodiment of the present invention, the first connection structure and the second connection structure are both made of plastic material.

[0013] The utility model also provides a remote controller, comprising the above-mentioned screw self-locking structure.

[0014] The beneficial effect of the utility model is that a blocking ring is formed on the inner wall of the first connecting structure, and a guide hole is formed on the blocking ring, and the inner diameter of the guide hole is set to be smaller than the outer diameter of the threaded connection part. When the connecting piece passes through the guide hole, a threaded structure matching it is formed on the inner wall of the guide hole, so that the threaded connection part cannot fall out of the guide hole after passing through the guide hole. In addition, by making the inner diameter of the mounting bottom hole smaller than the outer diameter of the threaded connection part, the threaded connection part and the mounting bottom hole fit better, so as to reduce the possibility of loosening of the connecting piece 1 and keep the first connecting structure and the second connecting structure connected through the connecting piece. At the same time, the risk of the connecting piece falling out is effectively avoided, preventing children from swallowing it by mistake, and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0016] Figure 1 is a cross-sectional view of a screw self-locking structure in an embodiment;

[0017] Figure 2 is a cross-sectional view of a self-locking assembly in an embodiment;

[0018] Figure 3 is a schematic diagram of a connecting member in an embodiment;

[0019] Figure 4 It is a cross-sectional view of the remote control in the embodiment.

[0020] Description of Reference Numerals

[0021] 1-connector; 11-nut; 12-screw; 121-threaded connection portion; 122-smooth rod portion; 2-self-locking assembly; 20-spacer position; 21-first connection structure; 211-blocking ring; 2111-guide hole; 2112-first surface; 2113-second surface; 22-second connection structure; 221-installation bottom hole. DETAILED DESCRIPTION

[0022] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0023] In addition, in the present utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0024] Please refer to Figure 1-Figure 3 , Figure 1 This is a cross-sectional view of the screw self-locking structure. Figure 2 is a cross-sectional view of the self-locking component. Figure 3Schematic diagram of a connector. This embodiment provides a screw self-locking structure, which includes a connector 1 and a self-locking assembly 2. Among them, the connector 1 includes a nut 11 and a screw 12, the nut 11 is connected to one end of the screw 12, and a threaded connection portion 121 is formed on the screw 12, and the threaded connection portion 121 is used to connect with the self-locking assembly 2. Further, the self-locking assembly 2 includes a first connecting structure 21 and a second connecting structure 22, and the inner wall of the first connecting structure 21 is provided with a blocking ring 211, and the blocking ring 211 is formed with a guide hole 2111. And the outer diameter of the nut 11 is greater than the inner diameter of the guide hole 2111, and the outer diameter of the threaded connection portion 121 is greater than the inner diameter of the guide hole 2111. The second connecting structure 22 is axially arranged at the bottom of the first connecting structure 21, and the second connecting structure 22 is provided with a mounting bottom hole 221, and the mounting bottom hole 221 is connected to the guide hole 2111, and the inner diameter of the mounting bottom hole 221 is smaller than the outer diameter of the threaded connection portion 121. During connection, the nut 11 is screwed so that the end of the screw rod 12 away from the nut 11 passes through the guide hole 2111, and then extends into the installation bottom hole 221 and is connected to the installation bottom hole 221. After the connection is completed, the nut 11 abuts against the blocking ring 211. Thus, the first connection structure 21 and the second connection structure 22 are fastened and connected through the connector 1.

[0025] Specifically, when in use, the screw rod 12 passes through the guide hole 2111 by screwing. Since the inner diameter of the guide hole 2111 is smaller than the outer diameter of the threaded connection part 121, and the inner diameter of the installation bottom hole 221 is smaller than the outer diameter of the threaded connection part 121, when the screw rod 12 is screwed through the guide hole 2111, the threaded connection part 121 cuts the inner wall of the guide hole 2111, so that the inner wall of the guide hole 2111 forms a thread structure matching the threaded connection part 121. After the threaded connection part 121 of the screw rod 12 passes through the guide hole 2111, the screw rod 12 continues to be screwed and connected to the installation bottom hole 221 through the threaded structure. Similarly, since the inner diameter of the installation bottom hole 221 is smaller than the outer diameter of the threaded connection part 121, when the threaded connection part 121 is connected to the installation bottom hole 221, the threaded connection part 121 cuts the hole wall of the installation bottom hole 221, thereby fastening the first connection structure 21 and the second connection structure 22 through the connector 1.

[0026] Since the inner diameter of the mounting bottom hole 221 is smaller than the outer diameter of the threaded connection part 121. When the threaded connection part 121 is connected to the mounting bottom hole 221, the threaded connection part 121 uses its own thread to squeeze the inner wall of the mounting bottom hole 221 to form a threaded structure that matches it, so that the threaded connection part 121 fits better with the mounting bottom hole 221, reducing the possibility of the connector 1 loosening. In addition, since the inner diameter of the mounting bottom hole 221 is smaller than the outer diameter of the threaded connection part 121, even if the connector 1 is loose, the threaded connection part 121 is clamped in the mounting bottom hole 221, and the connector 1 cannot fall out of the mounting bottom hole 221 without the action of external force, so that the first connection structure 21 and the second connection structure 22 remain connected.

[0027] Even if the threaded connection part 121 is detached from the connection with the mounting bottom hole 221, since the inner diameter of the guide hole 2111 is smaller than the outer diameter of the connection part, the threaded connection part 121 is stuck between the blocking ring 211 and the mounting bottom hole 221. In the absence of external force, the threaded connection part 121 cannot pass through the guide hole 2111, so that the connector 1 cannot fall out of the self-locking component 2 to achieve the self-locking effect.

[0028] It should be noted that the first connection structure 21 and the second connection structure 22 are both made of plastic material.

[0029] Furthermore, the depth L1 of the mounting bottom hole 221 is greater than or equal to the length L2 of the threaded connection portion 121. After the threaded connection portion 121 extends into the mounting bottom hole 221, the threaded connection portion 121 squeezes the mounting bottom hole 221, so that the threaded connection portion 121 fits the mounting bottom hole 221 to the greatest extent, thereby strengthening the fastening connection between the screw rod 12 and the second connection structure 22 and preventing the threaded connection portion 121 from being over-connected.

[0030] A spacing position 20 is formed between the blocking ring 211 and the second connection structure 22, and the depth L3 of the spacing position 20 is less than the length L2 of the threaded connection portion 121. When the screw 12 is loosened, even if the threaded connection portion 121 is disconnected from the mounting bottom hole 221, a portion of the threaded connection portion 121 is still connected to the mounting bottom hole 221, so that the first connection structure 21 and the second connection structure 22 remain connected. The threaded connection portion 121 partially falls out of the spacing position 20, and because the inner diameter of the guide hole 2111 is smaller than the outer diameter of the threaded connection portion 121, the threaded connection portion 121 is stuck in the spacing position 20, so that the screw 12 cannot fall off.

[0031] Furthermore, the length L2 of the threaded connection portion 121 is less than the sum of the length L3 of the spacing position 20 and the length of the mounting bottom hole 221. Therefore, even if the threaded connection portion 121 and the mounting bottom hole 221 become loose, the portion of the threaded connection portion 121 that is separated from the mounting bottom hole 221 is clamped in the spacing position 20, and the remaining portion is still located in the mounting bottom hole 221 and remains connected to the mounting bottom hole 221, thereby making the first connection structure and the second connection structure remain connected, and the connector 1 cannot fall out of the self-locking assembly 2.

[0032] Furthermore, the screw rod 12 further includes a polished rod portion 122, one end of which is connected to the nut 11, and the other end of which is connected to the threaded connection portion 121, and the outer diameter of the polished rod portion 122 is less than or equal to the inner diameter of the guide hole 2111. When the threaded connection portion 121 is connected to the guide hole 2111 and the mounting bottom hole 221, the generated chips can be discharged better through the guide hole 2111.

[0033] In this embodiment, the outer diameter of the smooth rod portion 122 is equal to the inner diameter of the guide hole 2111. After the threaded connection portion 121 passes through the guide hole 2111, the smooth rod portion 122 is tightly matched with the inner wall of the guide hole 2111, effectively improving the locking stability of the connector 1.

[0034] Preferably, the connecting member 1 is a semi-thread self-tapping screw.

[0035] Please refer to Figure 4 , Figure 4 : is a cross-sectional view of the remote control. The utility model also provides a remote control, including the above-mentioned screw self-locking structure. In this embodiment, the remote control includes the screw self-locking structure, and also includes a housing 10 and a control component 300. The housing 10 includes an upper housing 100 and a lower housing 200. The upper housing 100 and the lower housing 200 are connected to each other through the screw self-locking structure. After the connection, a storage space 400 is formed between the two, and the control component 300 is located in the storage space 400.

[0036] Specifically, the first connection structure 21 is provided on the upper shell 100 and is formed integrally with the upper shell 100, the second connection structure 22 is provided on the lower shell 200, and the second connection structure 22 is formed integrally with the lower shell 200, and the first connection structure 21 and the second connection structure 22 correspond to each other. When connected, the connecting member 1 passes through the first connection structure 21 and is connected to the second connection structure 22, thereby fastening the upper shell 100 and the lower shell 200 to prevent the components of the control assembly 300 from falling out. During the use of the remote control, when the connector 1 becomes loose, part of the threaded connection part 121 falls out of the installation bottom hole 221 into the spacing position 20. However, since the depth L3 of the spacing position is less than the length L2 of the threaded connection part, part of the threaded connection part 121 is still connected to the installation bottom hole 221, and the inner diameter of the guide hole 2111 is less than the outer diameter of the threaded connection part 121, so that the threaded connection part 121 is stuck in the spacing position 20 and cannot pass through the guide hole 2111, and the first connection structure 21 is kept connected to the second connection structure 22. In this way, the parts in the housing 10 are prevented from falling out, and the connector 1 is also prevented from falling off from the housing 10, which prevents children from swallowing it by mistake, thereby improving the safety of the remote control.

[0037] In summary, by forming a blocking ring 211 on the inner wall of the first connecting structure 21, the blocking ring 211 is formed with a guide hole 2111, and the inner diameter of the guide hole 2111 is set to be smaller than the outer diameter of the threaded connection part 121. When the connector 1 passes through the guide hole 2111, a threaded structure matching it is formed on the inner wall of the guide hole 2111, so that the threaded connection part 121 cannot fall out of the guide hole 2111 after passing through the guide hole 2111. In addition, by making the inner diameter of the mounting bottom hole 221 smaller than the outer diameter of the threaded connection part 121, the threaded connection part 121 is better matched with the mounting bottom hole 221 to reduce the possibility of the connector 1 loosening. The risk of the connector 1 falling out is effectively avoided, children are prevented from swallowing it by mistake, and the safety of the remote control is improved.

[0038] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A screw self-locking structure, characterized in that: include: A connecting piece (1) and a self-locking assembly (2), wherein the connecting piece (1) comprises a nut (11) and a screw (12), wherein the nut (11) is arranged at one end of the screw (12), wherein the screw (12) comprises a threaded connection portion (121), wherein the self-locking assembly (2) comprises a first connection structure (21) and a second connection structure (22), wherein a blocking ring (211) is formed on the inner wall of the first connection structure (21), wherein the blocking ring (211) has a guide hole (2111), wherein the outer diameter of the nut (11) is greater than the inner diameter of the guide hole (2111), and wherein the threaded connection portion (121) is provided on the inner wall of the first connection structure (21). The outer diameter of the part (121) is greater than the inner diameter of the guide hole (2111); the second connection structure (22) is axially arranged at the bottom of the first connection structure (21); the second connection structure (22) is provided with a mounting bottom hole (221); the mounting bottom hole (221) is communicated with the guide hole (2111); and the inner diameter of the mounting bottom hole (221) is smaller than the outer diameter of the threaded connection part (121); when connected, the screw rod (12) passes through the guide hole (2111), and the threaded connection part (121) is connected with the mounting bottom hole (221).

2. The screw self-locking structure according to claim 1, characterized in that: The depth L1 of the mounting bottom hole (221) is greater than or equal to the length L2 of the threaded connection portion (121).

3. The screw self-locking structure according to claim 1, characterized in that: The blocking ring (211) has a first surface (2112) and a second surface (2113) that are arranged opposite to each other, the nut (11) abuts against the first surface (2112), and a spacing position (20) is formed between the second surface (2113) and the second connecting structure (22), and the depth L3 of the spacing position (20) is less than the length L2 of the threaded connection portion (121).

4. The screw self-locking structure according to claim 3, characterized in that: The length L2 of the threaded connection portion (121) is less than the sum of the length L3 of the spacing position (20) and the length of the mounting bottom hole (221).

5. The screw self-locking structure according to claim 1, characterized in that: The screw rod (12) further comprises a smooth rod portion (122), one end of the smooth rod portion (122) being connected to the nut (11), and the other end of the smooth rod portion (122) being connected to the threaded connection portion (121), and a diameter of the smooth rod portion (122) being less than or equal to an inner diameter of the guide hole (2111).

6. The screw self-locking structure according to claim 1, characterized in that: The connecting piece (1) is a half-thread self-tapping screw.

7. The screw self-locking structure according to claim 1, characterized in that: The first connecting structure (21) and the second connecting structure (22) are both made of plastic material.

8. A remote controller, characterized in that: It comprises the screw self-locking structure described in any one of claims 1-7.

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