Bolt hole structure
By designing the latch hole structure and utilizing tooth pattern matching and bolt connection, the problem of latch offset in aircraft doors under aerodynamic loads was solved, achieving reliable locking of the door.
Patent Information
- Application Number
- CN202422636275.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-10-30
AI Technical Summary
Under the action of aerodynamic loads, the relative positions of the latch and the latch hole of the aircraft cabin door shift, making it difficult to insert the latch and affecting the locking effect of the cabin door.
A latch hole structure is designed, including a base, a support and a latch hole. The structure utilizes tooth pattern matching and bolt connection to allow the bolt gap to be adjusted to adapt to the deformation of the hatch and the door frame, ensuring that the latch can align with the latch hole.
When the hatch is deformed, the latch can be easily inserted into the latch hole to achieve effective locking, thereby improving the safety and reliability of the hatch.
Smart Images
Figure CN223398505U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of latch hole structure design, and specifically relates to a latch hole structure. Background Art
[0002] In aircraft and other mechanical design fields, a latch mechanism is often used to lock the cabin door by utilizing the cooperation between the latch and the latch hole.
[0003] The cabin door on the aircraft is easily subjected to aerodynamic loads and deforms relative to the cabin door frame, causing the relative positions of the latch and the latch hole installed on the cabin door and the cabin door frame to shift, so that the latch can no longer be easily inserted into the latch hole.
[0004] This application is proposed in view of the above-mentioned technical defects. Utility Model Content
[0005] The purpose of the present application is to provide a pin hole structure to overcome or alleviate at least one of the technical deficiencies of the prior art.
[0006] The technical solution of this application is:
[0007] A latch hole structure, comprising:
[0008] a base having circular bolt holes therein;
[0009] The support has a strip-shaped bolt hole thereon and is in contact with the base through the tooth pattern; the strip-shaped bolt hole extends along the arrangement direction of the tooth pattern and is opposite to the circular bolt hole;
[0010] The pin hole is connected to the support, is axially arranged along the circular bolt hole, and has an oblate structure along the extending direction of the tooth pattern.
[0011] According to at least one embodiment of the present application, in the above-mentioned pin hole knot, the base and the support are plate-shaped structures.
[0012] According to at least one embodiment of the present application, in the above-mentioned pin hole knot, there are multiple circular bolt holes on the base and corresponding strip bolt holes on the support, which are distributed around the pin hole.
[0013] According to at least one embodiment of the present application, the above-mentioned latch hole knot further includes:
[0014] A plurality of angular support pieces are connected between the support and the latch holes.
[0015] According to at least one embodiment of the present application, in the above-mentioned pin hole knot, the support, the pin hole and each angular support piece are integrally formed.
[0016] This application has at least the following beneficial technical effects:
[0017] A latch hole structure is provided. When used on an aircraft cabin door, bolts can be passed through strip bolt holes and circular bolt holes to fix a base, a support, and a latch hole to a cabin door frame. A latch is provided on the cabin door, and teeth on the latch hole structure are arranged along the opening and closing direction of the cabin door. The oblate structure of the latch hole can leave a margin for deformation between the cabin door and the cabin door frame along the vertical direction of the cabin door opening and closing. By loosening the bolts, the gap between the strip bolt hole and the bolts can be conveniently utilized to adjust the staggered position of the teeth on the support and the base, thereby adapting to the relative deformation of the cabin door and the cabin door frame along the opening and closing direction of the cabin door, so that the latch provided on the cabin door can be aligned with the latch hole and can be easily inserted into the latch hole to lock the cabin door. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a schematic diagram of a pin hole structure provided in an embodiment of the present application;
[0019] in:
[0020] 1-base; 2-support; 3-pin hole; 4-angular support piece.
[0021] In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. In addition, the drawings are only used for illustrative purposes and should not be understood as limiting this application. DETAILED DESCRIPTION
[0022] To make the technical solution and its advantages of this application more clear, the technical solution of this application will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described here are only some of the embodiments of this application and are only used to explain this application, not to limit this application. It should be noted that for ease of description, only the parts relevant to this application are shown in the accompanying drawings, and other relevant parts can refer to the general design.
[0023] In addition, unless otherwise defined, the technical terms or scientific terms used in the description of this application should have the usual meanings understood by those skilled in the art in the field to which this application belongs. The words indicating orientation used in the description of this application are only used to indicate relative directions or positional relationships. When the absolute position of the described object changes, its relative positional relationship may also change accordingly. The word "include" used in the description of this application means that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, but does not exclude other elements or objects.
[0024] In addition, it should be noted that, unless otherwise clearly stipulated and limited, the words "installation", "connection" and similar terms used in the description of this application should be understood in a broad sense. For example, the connection can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Technical personnel in the field can understand its specific meaning in this application according to the specific circumstances.
[0025] A pin hole structure, such as Figure 1 Shown, including:
[0026] Base 1, having circular bolt holes;
[0027] The support 2 has a strip-shaped bolt hole thereon, and is in contact with the base 1 through the tooth pattern; the strip-shaped bolt hole extends along the arrangement direction of the tooth pattern and is opposite to the circular bolt hole;
[0028] The pin hole 3 is connected to the support 2, is arranged along the axial direction of the circular bolt hole, and has an oblate structure along the extending direction of the tooth pattern.
[0029] The latch hole structure disclosed in the above embodiment, when used on an aircraft cabin door, can be fixed to the cabin door frame by bolts passing through the strip bolt holes and the circular bolt holes, and a latch is provided on the cabin door. The teeth on the latch hole structure are arranged along the opening and closing direction of the cabin door. The oblate structure of the latch hole 3 can leave a margin for the deformation between the cabin door and the cabin door frame along the vertical direction of the cabin door opening and closing, and the staggered position of the teeth on the support 2 and the base 1 can be adjusted by loosening the bolts and conveniently utilizing the gap between the strip bolt holes and the bolts to adapt to the relative deformation of the cabin door and the cabin door frame along the opening and closing direction of the cabin door, so that the latch provided on the cabin door can be aligned with the latch hole 3 and can be easily inserted into the latch hole 3 to lock the cabin door.
[0030] In some optional embodiments, in the above-mentioned pin hole knot, the base 1 and the support 2 are plate-shaped structures.
[0031] In some optional embodiments, in the above-mentioned pin hole structure, there are multiple circular bolt holes on the base 1 and corresponding strip bolt holes on the support 2, which are distributed around the pin hole 3 to ensure that the entire structure is reliably fixed on the cabin door frame.
[0032] In some optional embodiments, the above-mentioned pin hole knot further includes:
[0033] A plurality of angular support pieces 4 are connected between the support 2 and the pin hole 3 so as to reliably support the pin hole 3 .
[0034] In some optional embodiments, in the above-mentioned pin hole knot, the support 2, the pin hole 3 and each angular support piece 4 are integrally formed, specifically, they can be integrally formed by machining or casting.
[0035] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other. In the absence of conflict, the embodiments in this application and the technical features in the embodiments can be combined with each other to obtain new embodiments.
[0036] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art can make equivalent changes or replacements to the relevant technical features, and the technical solutions after these changes or replacements will fall within the scope of protection of the present application.
Claims
1. A pin hole structure, characterized in that: include: A base (1) having a circular bolt hole; The support (2) has a strip-shaped bolt hole thereon and is in contact with the base (1) through the tooth pattern; the strip-shaped bolt hole extends along the arrangement direction of the tooth pattern and is opposite to the circular bolt hole; The pin hole (3) is connected to the support (2), is arranged along the axial direction of the circular bolt hole, and has an oblate structure along the extending direction of the tooth pattern.
2. The latch hole structure according to claim 1, wherein: The base (1) and the support (2) are plate-shaped structures.
3. The latch hole structure according to claim 2, characterized in that: There are a plurality of circular bolt holes on the base (1) and corresponding strip-shaped bolt holes on the support (2), which are distributed around the latch hole (3).
4. The latch hole structure according to claim 1, wherein: Also includes: A plurality of angular support pieces (4) are connected between the support (2) and the pin hole (3).
5. The latch hole structure according to claim 1, wherein: The support (2), the pin hole (3) and each angular support piece (4) are integrally formed.