Fastener limiting structure

Abstract

The utility model discloses a fastener limiting structure which comprises a partition plate and a limiting piece used for supporting a fastener and making contact with the fastener. And the limiting piece is arranged on the inner side of the partition plate and is a geometrical object which protrudes on the inner surface of the partition plate and can hinder the movement of the fastener on the inner side of the partition plate. According to the utility model, the inner side of the separator plate is provided with the limiting member which has the raised surface and can hinder the movement of the fastener, so that the fastener can be limited without using a tool when the cable joint is assembled, a worker can operate with only one hand, the production operation is simple and convenient, the production assembly efficiency is improved, and the production cost is reduced. Meanwhile, the problem that tools are inconvenient to use due to the limited internal space of the partition plate is solved.

Description

Technical Field

[0001] This utility model belongs to the field of cable assembly technology, specifically, it relates to a fastener limiting structure. Background Technology

[0002] During the production of air conditioning systems for rail vehicles, the cables installed often need to pass through internal partitions. Cable harnesses passing through these partitions typically require sealed cable connectors. These connectors are usually fixed to both sides of the partition via threaded connections, with the connectors located on the outer side and the lock nuts on the inner side. During cable installation, after the cable harness passes through the connector, tightening the nut secures the harness, ensuring the seal of the cable holes on both sides of the partition. Tightening the cable harness usually involves using a wrench to hold the lock nut inside the partition and another wrench to tighten it on the outer side. However, the nuts on the inner side of the partition are relatively thin, making them prone to slippage when using a wrench for positioning. Furthermore, assembling on both sides of the partition requires tools, making single-person operation inconvenient and affecting assembly efficiency.

[0003] In view of this, this utility model is proposed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art, improve the installation efficiency of vehicle air conditioning cables in the prior art, enhance the convenience of operation, and provide a fastener limiting structure.

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0006] This utility model provides a fastener limiting structure, including a partition for supporting the fastener and a limiting member that contacts the fastener;

[0007] The limiting element, located inside the partition, is a geometric shape that protrudes from the inner surface of the partition and can impede the movement of the fasteners inside the partition.

[0008] As a further technical solution of this application, the limiting component includes any one of point-type limiting components and surface-type limiting components;

[0009] Point-type limiting components include single-point or multi-point cylindrical structures, while surface-type limiting components include plate-shaped structures with limited accommodating space.

[0010] As a further technical solution of this application, the plate structure is a block plate with uniform thickness, and a limiting groove is provided on the block plate to accommodate part or all of the fastener.

[0011] As a further technical solution of this application, the inner wall of the limiting groove abuts against the outer wall of the fastener, and the cross-sectional shape of the limiting groove along the direction parallel to the partition is the same as or partially the same as the cross-sectional shape of the fastener in that direction.

[0012] As a further technical solution of this application, the groove depth of the limiting groove is less than or equal to the maximum diameter of the fastener.

[0013] As a further technical solution of this application, the point-type limiting component is disposed on the outside of the fastener, parallel to the fastener and abutting against it.

[0014] One end of the point-type limiting component is fixedly connected to the partition, while the other end is free and unconnected.

[0015] As a further technical solution of this application, the point-type limiting member has a preset length in the direction perpendicular to the partition, and the preset length is less than or equal to the thickness of the fastener.

[0016] As a further technical solution of this application, the multi-point columnar structure is evenly distributed along the outer periphery of the fastener.

[0017] As a further technical solution of this application, the limiting member and the partition are integrally formed or detachably connected.

[0018] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0019] By setting a limiting component with a raised surface on the inner side of the partition that can hinder the movement of the fasteners on the inner side of the partition, it is possible to tighten the fasteners without the need for tools when assembling cable connectors. Workers can tighten the fasteners by tightening the bolts on the outer side of the partition with just one hand. This simplifies the production operation and improves the production and assembly efficiency. It also solves the problem of limited space inside the partition making it inconvenient to use tools.

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0022] In the attached diagram:

[0023] Figure 1 This is a structural diagram of existing technology;

[0024] Figure 2 This is a schematic diagram of the fastener limiting structure application in this utility model;

[0025] Figure 3a This is a schematic diagram of the surface-type limiting component and fastener of this utility model;

[0026] Figure 3b This is a schematic diagram of the midpoint limiting component and fastener of this utility model.

[0027] Icons: 1. Partition; 2. Outside of partition; 3. Inside of partition; 4. Nut; 5. Bolt; 6. Limiting component; 61. Surface limiting component; 62. Point limiting component.

[0028] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0030] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] like Figure 1As shown, when installing cables inside the air conditioning unit of a rail vehicle, it is often necessary to pass through the internal partition 1. Cable harnesses passing through the partition typically require sealing with cable connectors. Existing cable connectors are fixed to both sides of the partition 1 via threaded connections. Locking nuts 4 are located on the inner side 3 of the partition. The cable harness passes through the cable connector and is tightened by tightening the nut 4 to lock it in place. When locking the cable harness, a wrench is used to hold the locking nut 4 on the inner side 3 of the partition, while another wrench is used on the outer side 2 to tighten it. However, when locking the nut 4 on the inner side 3, because the locking nut 4 is relatively thin, it is easy for it to slip when using a wrench to hold it in place, making it inconvenient to tighten, resulting in inconvenient operation and affecting assembly efficiency. To solve the above-mentioned technical problems in actual production, this utility model provides a fastener limiting structure.

[0033] like Figure 2 , Figure 3a ), Figure 3b As shown in the figure, a fastener limiting structure includes a partition 1 for supporting the fastener and a limiting member 6 that contacts the fastener; the limiting member 6 is disposed on the inner side 3 of the partition 1 and is a geometric shape that protrudes from the inner surface of the partition 1 and can hinder the movement of the fastener on the inner side 3 of the partition 1.

[0034] As is easy to understand, by setting a limiting member 6 on the inner side 3 of the partition, the position of the fastener nut 4 is fixed. When tightening the bolt 5 on the outer side 2 of the partition, the fastener does not rotate and there is no need to use a tool to limit it. The operator only needs to operate the bolt 5 with one hand on the outer side 2 of the partition to tighten it.

[0035] Further details are attached. Figure 3a ), Figure 3b As shown in the figure, the limiting member 6 includes a point limiting member 62 or a surface limiting member 61; the point limiting member 62 includes a single-point or multi-point columnar structure, and the surface limiting member 61 includes a plate-shaped structure with a limited accommodating space.

[0036] The aforementioned point-type limiting component 62 uses one or more cylindrical structures as the basic limiting unit to hinder the movement of the fastener, thereby limiting the fastener. This allows the operator to seal the cable joint by operating the rotating locking bolt 5 on the outer side 2 of the partition with one hand.

[0037] The surface-type limiting member 61 provides a large contact area, which not only improves the stability of the limiting but also effectively absorbs impact forces and protects the equipment from damage. Typically, the surface-type limiting member 61 is provided with one or more grooves, holes, etc., as limiting spaces to accommodate and restrict moving parts.

[0038] Preferred options are listed below. Figure 3aAs shown in the figure, the surface-type limiting member 61 of this utility model includes a plate-shaped structure with a limited accommodating space. The structure is simple and easy to process, and it can achieve the maximum contact and fit between the limiting member 6 and the fastener, effectively absorbing the impact force and protecting the cable joint from damage.

[0039] Furthermore, the plate structure is a block plate with a uniform thickness, and the block plate is provided with a limiting groove, which accommodates part or all of the fastener.

[0040] The inner wall of the limiting groove abuts against the outer wall of the fastener, and the cross-sectional shape of the limiting groove along the direction parallel to the partition 1 is the same as or partially the same as the cross-sectional shape of the fastener in that direction. (See attached...) Figure 3a As shown, on a plane parallel to partition 1, the fastener is partially or completely embedded in the limiting groove. It is readily understood that those skilled in the art can set the shape and size of the limiting groove according to the shape of the fastener, as long as it can achieve the limiting function of the fastener.

[0041] For example, the fastener is a hexagonal bolt 5. When the fastener is fully embedded, the limiting groove is a hexagonal prism that completely encloses and fixes the hexagonal bolt 5. When the fastener is partially embedded, the limiting groove is a regular polygonal cavity, and the polygonal cavity can at least enclose two sides of the hexagonal bolt 5, engaging and fixing one corner of the fastener and preventing it from rotating.

[0042] Combined with appendix Figure 2 and attached Figure 3a As shown in the illustration, for example, the polygonal cavity can enclose and accommodate the four sides of the hexagonal bolt 5, engage the triangular edges of the fastener, and prevent it from rotating. In this case, the polygonal cavity is a combination of a cuboid and a triangular prism in terms of spatial volume.

[0043] Furthermore, the depth of the locating groove is less than or equal to the maximum diameter of the fastener. When the locating groove completely encloses the fastener, its depth equals the maximum diameter of the fastener; when it partially encloses the fastener, its depth is less than the maximum diameter of the fastener. It should be noted that the maximum diameter refers to the distance between opposite vertices of the fastener's cross-section. For example, if the fastener's cross-section is a regular square, pentagon, or hexagon, the maximum diameter is the distance between any two opposite vertices.

[0044] As an example of this application, see the attached document. Figure 3b As shown, the point-type limiting member 62 includes a single-point or multi-point cylindrical structure, wherein the cylindrical structure includes any one of a cylindrical structure and a square column structure. Therefore, the point-type limiting member 62 includes any one or more of a single-point cylindrical structure, a multi-point cylindrical structure, a single-point square column structure, and a multi-point square column structure.

[0045] Obviously, the difference between a single-point limiting structure and a multi-point limiting component lies in the number of limiting structures. Given that the contact area between a multi-point limiting component and the fastener is larger than that of a single-point limiting component, the multi-point limiting component can improve the stability of the limiting, effectively absorb the impact force generated during the tightening process, and protect the device structure from damage. The limiting structure in this application is preferably a multi-point cylindrical structure or a multi-point square column structure.

[0046] Optionally, those skilled in the art can select the specific type of limiting structure according to the specific shape of the fastener. Preferably, when the cross-section of the fastener is symmetrical, the limiting structure is set as a cylindrical structure. Given the symmetry of the cylindrical structure, pressure can be evenly distributed, reducing eccentric wear. When the cross-section of the fastener is asymmetrical, the limiting structure is set as a square columnar structure. The square columnar structure can provide stronger limiting force in a specific direction, better resisting lateral forces and improving stability.

[0047] Further preferred options are listed below. Figure 3b As shown in the diagram, the fastener is a bolt 5 with a regular hexagonal cross-section, and the corresponding limiting structure is a multi-point cylindrical structure. The multi-point cylindrical structure includes multiple cylinders evenly distributed on the outside of the hexagonal bolt 5. When the operator tightens it in the forward direction, the fastener also generates a forward rotational driving force. However, under the obstruction of the limiting structure (multi-point cylindrical structure), this forward rotational force is evenly resisted, reducing wear.

[0048] As an embodiment of this application, the point-type limiting member 62 is disposed on the outside of the fastener, parallel to the fastener and abutting against it; one end of the point-type limiting member 62 is connected and fixed to the partition 1, and the other end is free and unconnected.

[0049] Furthermore, the multi-point cylindrical structure is evenly distributed along the outer periphery of the fastener. The multi-point cylindrical structure is preferably cylindrical, with the cylinders parallel to and abutting against the fastener to maintain good contact and support. Preferably, in this application, three cylinders are evenly distributed on the outside of the hexagonal bolt 5, forming a stable triangular support structure to prevent the hexagonal bolt 5 from moving, thus improving the overall stability of the fastener and the limiting member 6.

[0050] Furthermore, the aforementioned point-type limiting member 62 has a preset length along a direction perpendicular to the partition 1, and the preset length is less than or equal to the thickness of the fastener. The preset length of the point-type limiting member 62 only needs to be less than or equal to the thickness of the fastener to form good support with the fastener and achieve a good limiting function.

[0051] As an example of this application, in the production design process, the limiting member 6 and the partition 1 are integrally formed or detachably connected.

[0052] For example, the limiting member 6 can be a separate component. The detachable connection between the limiting member 6 and the partition 1 can be any one of threaded connection, snap-fit ​​connection, or plug-in connection. Those skilled in the art can select and design according to actual needs. Detachability facilitates regular maintenance, replacement, and repair. The limiting member 6 and the partition 1 can also be an integral structure, formed by welding or die casting to make the limiting member 6 and the partition 1 a single molded structure. Preferably, in this embodiment, welding is used to form the limiting member 6 and the partition 1 as a single molded structure, which has low processing cost and stronger stability.

[0053] Compared with the prior art, the embodiments in this application have the following beneficial technical effects:

[0054] By setting a limiting member 6 with a raised surface on the inner side 3 of the partition that can hinder the movement of the fasteners on the inner side 3 of the partition, it is possible to limit the fasteners without using tools when assembling cable connectors. The operator only needs to tighten the bolts 5 on the outer side 2 of the partition with one hand to complete the tightening operation of the fasteners (nuts 4). The production operation is simple and the production assembly efficiency is improved. At the same time, it also solves the problem of limited space inside the partition and inconvenience in using tools.

[0055] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A fastener limiting structure, characterized in that: Includes a partition for supporting the fastener and a limiting member that contacts the fastener; A limiting member, disposed on the inner side of the partition, is a geometric shape that protrudes from the inner surface of the partition and can impede the movement of the fasteners on the inner side of the partition.

2. The fastener limiting structure according to claim 1, characterized in that: The limiting component includes any one of point-type limiting components and surface-type limiting components; The point-type limiting component includes a single-point or multi-point cylindrical structure, and the surface-type limiting component includes a plate-shaped structure with a limited accommodating space.

3. The fastener limiting structure according to claim 2, characterized in that: The plate structure is a block plate with uniform thickness, and the block plate is provided with a limiting groove, which accommodates part or all of the fastener.

4. The fastener limiting structure according to claim 3, characterized in that: The inner wall of the limiting groove abuts against the outer wall of the fastener, and the cross-sectional shape of the limiting groove along the direction parallel to the partition is the same as or partially the same as the cross-sectional shape of the fastener in that direction.

5. The fastener limiting structure according to claim 3 or 4, characterized in that: The depth of the limiting groove is less than or equal to the maximum diameter of the fastener.

6. The fastener limiting structure according to claim 2, characterized in that: The point-type limiting component is located on the outside of the fastener, and is parallel to and abuts against the fastener; One end of the point-type limiting component is fixedly connected to the partition, while the other end is free and unconnected.

7. The fastener limiting structure according to claim 6, characterized in that: The point-type limiting component has a preset length along a direction perpendicular to the partition, and the preset length is less than or equal to the thickness of the fastener.

8. The fastener limiting structure according to claim 2, characterized in that: The multi-point columnar structure is evenly distributed along the outer periphery of the fastener.

9. The fastener limiting structure according to any one of claims 1-4, characterized in that: The limiting component and the partition are either integrally formed or detachably connected.

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