Locking structure and child product

Abstract

The utility model provides a lock structure and children's products relate to connecting structure technical field, wherein, lock structure includes first casing, anti -unhooked screw and second casing, is provided with first screw hole on first casing, anti -unhooked screw includes screw head and screw rod, and the screw rod includes the thread section and the smooth section that are connected with each other, and the smooth section is connected with screw head, and the thread section is connected in the one end of smooth section away from screw head, second casing is seted up in the connecting groove, and the bottom wall of connecting groove is seted up with second screw hole, wherein, the hole diameter of first screw hole is less than the thread diameter of thread section, and the hole diameter of first screw hole is greater than the diameter of smooth section, and the inner diameter of connecting groove is greater than the thread diameter of thread section.

Description

Technical Field

[0001] This utility model relates to the field of connection structure technology, and in particular to a locking structure and children's products. Background Technology

[0002] Safety is always paramount when it comes to children's products. Safety regulations in various countries require children's products to include warning signs against accidental ingestion, warnings about functional sharp edges and / or sharp points, and warnings about small parts. When designing the structure of children's products, it's also necessary to minimize the presence of sharp parts and small components.

[0003] However, screws are a common locking structure and are widely and unavoidably used in product assembly. They also have multiple dangerous characteristics such as small parts and sharp edges. Screws on children's products can easily fall off for various reasons, causing children to accidentally swallow or get injured, resulting in insufficient safety. Utility Model Content

[0004] The main purpose of this utility model is to provide a locking structure and children's products, which aims to solve the technical problems of screws easily falling off and insufficient safety in the prior art. To achieve the above objectives, the locking structure proposed in this utility model includes: A first housing, wherein a first screw hole is provided on the first housing; An anti-loosening screw, the anti-loosening screw includes a screw head and a screw rod, the screw rod includes a threaded section and a smooth section connected to each other, the smooth section is connected to the screw head, and the threaded section is connected to the end of the smooth section away from the screw head; The second housing has a connecting groove inside, and a second screw hole is provided on the bottom wall of the connecting groove; Wherein, the diameter of the first screw hole is smaller than the diameter of the threaded section, the diameter of the first screw hole is larger than the diameter of the smooth section, the inner diameter of the connecting groove is larger than the diameter of the threaded section, the first housing can be fastened to the second housing to make the first screw hole communicate with the connecting groove, the anti-loosening screw can pass through the first screw hole and extend into the connecting groove to lock with the second screw hole, and the outer wall of the first housing facing the second housing can abut against the threaded section in the connecting groove to prevent the threaded section from coming out of the first screw hole.

[0005] This utility model also proposes a children's product, which applies the above-mentioned locking structure. Attached Figure Description

[0006] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0007] Figure 1 This is a three-dimensional structural diagram of the locking structure of some embodiments of the present utility model; Figure 2 This is an exploded structural diagram of the locking structure of some embodiments of the present invention; Figure 3 This is a schematic diagram of the structure of the first housing of the locking structure in some embodiments of the present invention; Figure 4 This is a cross-sectional structural diagram of the anti-loosening screw locking with the second screw hole in some embodiments of this utility model; Figure 5 This is a cross-sectional structural diagram of the anti-loosening screw detaching from the second screw hole in some embodiments of this utility model.

[0008] Explanation of icon numbers: 100. Locking structure; 1. First housing; 11. First screw hole; 12. Mounting groove; 13. Mounting platform; 14. Insertion groove; 15. Positioning block; 16. Arc-shaped strip positioning block; 17. Base plate; 18. Side plate; 181. Outer edge; 2. Anti-loosening screw; 21. Screw head; 22. Screw rod; 221. Thread section; 222. Smooth section; 223. Flat part; 3. Second housing; 31. Connecting groove; 32. Second screw hole; 33. Insertion block; 34. Positioning groove; 35. Arc-shaped strip positioning groove.

[0009] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0010] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0011] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0012] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0013] Screws, as a common locking structure, are widely and unavoidably used in product assembly. They also have multiple dangerous characteristics, such as being small parts and having sharp edges. Screws on children's products can easily fall off for various reasons, causing children to accidentally swallow them or get injured, resulting in insufficient safety.

[0014] This utility model proposes a locking structure to solve the technical problems of screws easily falling off and insufficient security in the prior art.

[0015] Please see Figure 1 , Figure 2 , Figure 4 and Figure 5In one embodiment of this utility model, the locking structure 100 includes a first housing 1, an anti-loosening screw 2, and a second housing 3. The first housing 1 has a first screw hole 11. The anti-loosening screw 2 includes a screw head 21 and a screw rod 22. The screw rod 22 includes a threaded section 221 and a smooth section 222 connected to each other. The smooth section 222 is connected to the screw head 21, and the threaded section 221 is connected to the end of the smooth section 222 away from the screw head 21. The second housing 3 has a connecting groove 31, and the bottom wall of the connecting groove 31 has a second screw hole 32. The first screw hole 11... The diameter of hole 11 is smaller than the thread diameter of threaded section 221. The diameter of the first threaded hole 11 is larger than the diameter of smooth section 222. The inner diameter of connecting groove 31 is larger than the thread diameter of threaded section 221. The first housing 1 can be fastened with the second housing 3 to make the first threaded hole 11 communicate with the connecting groove 31. The anti-loosening screw 2 can pass through the first threaded hole 11 and extend into the connecting groove 31 to lock with the second threaded hole 32. The outer wall of the first housing 1 facing the second housing 3 can abut against the threaded section 221 in the connecting groove 31 to prevent the threaded section 221 from coming out of the first threaded hole 11.

[0016] In the above solution, during installation, the threaded section 221 of the anti-loosening screw 2 is screwed into the first screw hole 11, and after passing through the first screw hole 11, it is screwed into the second screw hole 32 to complete the installation. At this time, the smooth section 222 is in the connecting groove 31, and the threaded section 221 is in the second screw hole 32. When the anti-loosening screw 2 is disassembled or falls out of the second screw hole 32 due to other factors, since the diameter of the smooth section 222 is smaller than the diameter of the first screw hole 11, the smooth section 222 can directly come out of the first screw hole 11. The diameter of the first screw hole 11 is set to be smaller than the thread diameter of the threaded section 221, so that the threaded section 221 will be stuck in the first screw hole 11, thereby achieving the effect of locking the threaded section 221 in the connecting groove 31, thus preventing the anti-loosening screw 2 from falling off the first housing 1, so that it will not be accidentally swallowed or injured by children, thus improving the overall safety. By designing the dimensions of the first screw hole 11, the smooth section 222, and the threaded section 221, this utility model allows the anti-loosening screw 2 to be disassembled and installed without falling out of the first housing 1, thereby preventing children from accidentally swallowing or injuring the anti-loosening screw 2 and improving the safety of children's products.

[0017] Reference Figure 2 and Figure 3 In one embodiment, a mounting groove 12 is formed on the first housing 1, and a first screw hole 11 is formed on the bottom wall of the mounting groove 12. The side of the first housing 1 away from the mounting groove 12 is connected to the second housing 3.

[0018] By forming a mounting groove 12 on the first housing 1 and setting the first screw hole 11 on the bottom wall of the mounting groove 12, the first screw hole 11 is structurally located in a recessed position within the mounting groove 12. Since the mounting groove 12 provides further limiting protection for the first screw hole 11, after the anti-loosening screw 2 passes through the first screw hole 11 into the connecting groove 31 and is locked with the second screw hole 32, the screw head 21 of the anti-loosening screw 2 can be partially or completely accommodated within the mounting groove 12. This avoids excessive external exposure of the screw head 21, reducing the possibility of the anti-loosening screw 2 being impacted, hooked, or accidentally tightened by external forces, thus improving the stability of the anti-loosening screw 2 after locking. Simultaneously, it also prevents the screw head 21 of the anti-loosening screw 2 from causing bumps or accidental injury to children, further improving the safety of children's products.

[0019] In one embodiment, the bottom wall of the mounting groove 12 protrudes in the direction away from the second housing 3 to form a mounting platform 13, so that the side of the first housing 1 away from the mounting groove 12 is recessed to form a plug groove 14 corresponding to the position of the mounting platform 13. The second housing 3 protrudes toward the first housing 1 to form a plug block 33 that is plugged into the plug groove 14, and a connecting groove 31 is formed on the plug block 33.

[0020] The side of the first housing 1 facing away from the mounting groove 12 is recessed according to the structure of the mounting platform 13 to form an insertion groove 14. The second housing 3 is correspondingly formed with an insertion block 33, which is inserted into the insertion groove 14. Through the cooperation between the insertion groove 14 and the insertion block 33, the first housing 1 and the second housing 3 form a more stable positioning structure when they are fastened together, so that the relative positions of the first housing 1 and the second housing 3 are kept highly consistent. This avoids the misalignment of the first screw hole 11 and the connecting groove 31 due to the offset between the housings, and improves the accuracy of the alignment of the anti-loosening screw 2 and the second screw hole 32.

[0021] In one embodiment, a plurality of positioning blocks 15 are provided on the side of the first housing 1 away from the mounting groove 12. The plurality of positioning blocks 15 are spaced apart on the outer periphery of the insertion groove 14. A plurality of positioning grooves 34 are provided on the second housing 3. The number of positioning grooves 34 is the same as that of positioning blocks 15 and they are inserted and engaged in a one-to-one correspondence.

[0022] By setting multiple positioning blocks 15 on the side of the first housing 1 away from the mounting groove 12, and by spacedly distributing the multiple positioning blocks 15 around the outer periphery of the insertion groove 14, the multiple positioning blocks 15 can respectively enter the corresponding positioning grooves 34 when the first housing 1 and the second housing 3 are fastened together, thereby forming multiple one-to-one corresponding limiting points distributed around the outer periphery of the insertion structure. Through the cooperation of the multiple positioning blocks 15 and the multiple positioning grooves 34, the first housing 1 and the second housing 3 can be automatically guided and quickly positioned when fastened together, so that the operator does not need to repeatedly adjust the position during assembly, and the first screw hole 11 and the connecting groove 31 can be accurately aligned. Furthermore, since the multiple positioning blocks 15 and the multiple positioning grooves 34 form an axially evenly distributed insertion fit structure, the first housing 1 and the second housing 3 can obtain stronger angular positioning ability and anti-rotation ability after fastening, preventing relative rotation or displacement when subjected to external forces such as compression, pulling or torsion.

[0023] In one embodiment, one of the positioning blocks 15 is an arc-shaped strip positioning block 16, which extends along the outer periphery of the positioning groove 34, and one of the positioning grooves 34 is an arc-shaped strip positioning groove 35 adapted to the arc-shaped strip positioning block 16.

[0024] Because the arc-shaped positioning block 16 has a long arc-shaped contact edge, it not only provides stable support superior to point contact or short-line contact after insertion, but also enhances the limiting effect of the first housing 1 and the second housing 3 in the axial direction, further strengthening their anti-rotation performance. Furthermore, the arc-shaped positioning block 16 acts as a guide when the first housing 1 and the second housing 3 are engaged, allowing the second housing 3 to gradually slide into the arc-shaped positioning groove 35 along the arc of the positioning block 16 as it approaches the first housing 1, thereby shortening the positioning time and improving the smoothness of the assembly process.

[0025] Reference Figure 1 and Figure 2 In one embodiment, the first housing 1 includes a bottom plate 17 and a side plate 18. The side plate 18 surrounds the periphery of the bottom plate 17 and forms a mounting groove 12 with the bottom plate 17. The side edge of the side plate 18 facing away from the second housing 3 is the outer edge 181, and the outer edge 181 of the side plate 18 is smoothly transitioned.

[0026] By including a base plate 17 and a side plate 18 in the first housing 1, with the side plate 18 surrounding the periphery of the base plate 17 to form a mounting groove 12 together with the base plate 17, the mounting groove 12 has a stable groove boundary in its structure. This provides a clearer and more defined installation area for the first screw hole 11, ensuring a good guiding environment for the anti-loosening screw 2 when passing through the first screw hole 11. Furthermore, by designating the edge of the side plate 18 away from the second housing 3 as an outer edge 181 and making this outer edge 181 a smooth transition, the edge of the side plate 18 will not form sharp corners, thereby reducing the safety risks of scratches, bumps, and other injuries caused by sharp edges in children's products.

[0027] In one embodiment, the length of the connecting groove 31 along the axial direction of the anti-loosening screw 2 is greater than the length of the thread section 221 along the axial direction of the anti-loosening screw 2.

[0028] By setting the length of the connecting groove 31 along the axial direction of the anti-loosening screw 2 to be greater than the length of the threaded section 221 along the axial direction of the anti-loosening screw 2, the threaded section 221 has a larger margin of movement inside the connecting groove 31. This allows the threaded section 221 to be accommodated more deeply inside the connecting groove 31 when the anti-loosening screw 2 loosens or comes out of the second threaded hole 32, thus preventing the threaded section 221 from being pushed out of the first threaded hole 11 due to insufficient space. At the same time, the threaded section 221 is suspended inside the connecting groove 31. When the threaded section 221 comes out of the second threaded hole 32 during disassembly, continuing to turn the anti-loosening screw 2 will cause the threaded section 221 to spin freely, preventing the threaded section 221 from being unscrewed out of the first threaded hole 11.

[0029] Reference Figure 4 and Figure 5 In one embodiment, the end face of the threaded section 221 away from the smooth section 222 forms a flat portion 223, and the flat portion 223 is arranged perpendicular to the axial direction of the anti-loosening screw 2.

[0030] By setting the end face of the threaded section 221 away from the smooth section 222 as a flat portion 223, the end face no longer has sharp corners or sharp edges. Thus, when the anti-loosening screw 2 is disengaged from the second threaded hole 32 and partially moves within the connecting groove 31, even if the end of the anti-loosening screw 2 comes into contact with the first housing 1 or other external areas within the structural allowable range, the flat portion 223 will not cause scratches or punctures to children due to the pointed structure, further reducing the risk of children being injured when touching, grasping, or misoperating the product.

[0031] In one embodiment, the inner diameter of the connecting groove 31 is gradually reduced from the first screw hole 11 to the second screw hole 32, and the minimum value of the inner diameter of the connecting groove 31 is greater than the thread diameter of the thread section 221.

[0032] By gradually narrowing the inner diameter of the connecting groove 31 from the first screw hole 11 to the second screw hole 32, the shape of the connecting groove 31 is formed into a structure similar to a guide cone. This allows the threaded section 221 of the anti-loosening screw 2 to be gradually guided to a position coaxial with the second screw hole 32 inside the connecting groove 31 after passing through the first screw hole 11. This effectively improves the automatic alignment capability of the threaded section 221 during assembly, reduces the difficulty of screwing in due to eccentricity, and improves installation efficiency and assembly stability.

[0033] According to some embodiments of this utility model, this utility model provides a children's product that incorporates the aforementioned locking structure 100. The specific structure of the locking structure 100 is as described in the above embodiments. Since this children's product adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon here.

[0034] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A locking structure, characterized in that, include: A first housing, wherein a first screw hole is provided on the first housing; An anti-loosening screw, the anti-loosening screw includes a screw head and a screw rod, the screw rod includes a threaded section and a smooth section connected to each other, the smooth section is connected to the screw head, and the threaded section is connected to the end of the smooth section away from the screw head; The second housing has a connecting groove inside, and a second screw hole is provided on the bottom wall of the connecting groove; Wherein, the diameter of the first screw hole is smaller than the diameter of the threaded section, the diameter of the first screw hole is larger than the diameter of the smooth section, the inner diameter of the connecting groove is larger than the diameter of the threaded section, the first housing can be fastened to the second housing to make the first screw hole communicate with the connecting groove, the anti-loosening screw can pass through the first screw hole and extend into the connecting groove to lock with the second screw hole, and the outer wall of the first housing facing the second housing can abut against the threaded section in the connecting groove to prevent the threaded section from coming out of the first screw hole.

2. The locking structure as described in claim 1, characterized in that, The first housing has a mounting groove, the first screw hole is opened in the bottom wall of the mounting groove, and the side of the first housing away from the mounting groove is connected to the second housing.

3. The locking structure as described in claim 2, characterized in that, The bottom wall of the mounting groove protrudes in a direction away from the second housing to form a mounting platform, so that the side of the first housing away from the mounting groove is recessed to form a plug-in groove corresponding to the position of the mounting platform. The second housing protrudes toward the first housing to form a plug-in block that is plugged into the plug-in groove, and the connecting groove is formed on the plug-in block.

4. The locking structure as described in claim 3, characterized in that, The first housing is provided with a plurality of positioning blocks on the side opposite to the mounting groove. The plurality of positioning blocks are spaced apart on the outer periphery of the insertion groove. The second housing is provided with a plurality of positioning grooves. The number of positioning grooves is the same as that of the positioning blocks and they are inserted and engaged in a one-to-one correspondence.

5. The locking structure as described in claim 4, characterized in that, One of the positioning blocks is an arc-shaped strip positioning block that extends along the outer periphery of the positioning groove, and one of the positioning grooves is an arc-shaped strip positioning groove adapted to the arc-shaped strip positioning block.

6. The locking structure as described in any one of claims 2 to 5, characterized in that, The first housing includes a bottom plate and a side plate. The side plate surrounds the periphery of the bottom plate and forms the mounting groove with the bottom plate. The side edge of the side plate opposite to the second housing is the outer edge, and the outer edge of the side plate is smoothly transitioned.

7. The locking structure as described in any one of claims 1 to 5, characterized in that, The length of the connecting groove along the axial direction of the anti-loosening screw is greater than the length of the thread segment along the axial direction of the anti-loosening screw.

8. The locking structure as described in any one of claims 1 to 5, characterized in that, The end face of the threaded section away from the smooth section forms a flat portion, and the flat portion is arranged perpendicular to the axial direction of the anti-loosening screw.

9. The locking structure as described in any one of claims 1 to 5, characterized in that, The inner diameter of the connecting groove gradually decreases from the first screw hole to the second screw hole, and the minimum value of the inner diameter of the connecting groove is greater than the thread diameter of the screw thread segment.

10. A children's product, characterized in that, The children's product uses a locking structure as described in any one of claims 1 to 9.

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