Aerospace control handle

Abstract

The utility model relates to the technical field of machining and manufacturing, in particular to a spaceflight control handle which comprises a handle shaft, a handle rod and a handle rod. A first key groove is formed in the outer circumference of the handle shaft; the handle ball comprises a mounting hole and a threaded hole, and the threaded hole is matched with the external threads; the connecting sleeve is embedded in the mounting hole, and a second key groove is formed in the connecting sleeve; and the connecting key is connected in the first key slot and the second key slot. The connecting sleeve is embedded in the mounting hole of the handle ball, the shape of the connecting sleeve and the shape of the mounting hole are designed to be rectangular, and the handle shaft is connected with the connecting sleeve through the connecting key, so that the contact area is increased, and the handle ball is prevented from loosening or rotating.

Description

Technical Field

[0001] The invention relates to the field of processing and manufacturing technology, and in particular to an aerospace control handle. Background Art

[0002] The aerospace control handle is a key mechanism for astronauts to control the spacecraft. The handle ball on the aerospace control handle is the part that astronauts hold in their hands to control the direction. The handle shaft and the handle ball are connected by threads and fixed with straight pins to ensure the up, down, left, and right twisting movement of the aerospace control handle. However, the twisting of the handle ball is completely dependent on the straight pin with a diameter of 1mm. Since the handle ball is a non-metallic material, it relies on the straight pin to resist the shear force when twisted repeatedly. If the pin hole is damaged and loosened or even broken after long-term repeated operation, the aerospace control handle cannot be used. Summary of the invention

[0003] In view of this, the invention aims to create an aerospace control handle, which prevents the handle ball from loosening or rotating by increasing the contact area.

[0004] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0005] An aerospace control handle, comprising:

[0006] A handle shaft, one end of which is provided with a coupling end, and the other end of which is provided with an external thread; a first keyway is provided on the outer circumference of the handle shaft.

[0007] The handle ball is provided with a mounting hole and a threaded hole penetrating the mounting hole inside the handle ball, and the threaded hole matches the external thread.

[0008] A connecting sleeve is installed between the mounting hole and the handle shaft, and a second keyway is arranged in the connecting sleeve.

[0009] A connecting key is connected in the first key slot and the second key slot.

[0010] Furthermore, a slot is provided on the handle shaft, and the aerospace control handle also includes a shaft retaining spring, which is provided at the slot of the handle shaft to prevent the connecting sleeve from moving axially.

[0011] Furthermore, the mounting hole extends outward from the mouth of the handle ball to form the mounting portion or extends inward from the mouth of the handle ball to form the mounting portion, and the mounting hole is arranged inside the mounting portion.

[0012] Furthermore, the shape of the mounting hole is a rectangle.

[0013] Furthermore, the connecting sleeve includes a connecting body and a circular boss. The connecting body has a rectangular shape that matches the mounting hole. The connecting body is provided with a penetrating connecting hole along the axis, and the handle shaft passes through the connecting hole and is connected to the handle ball; the end face of the circular boss close to the connecting body abuts against the outer end face of the mounting hole.

[0014] Furthermore, the connecting sleeve is made of copper.

[0015] Furthermore, the connecting key is a flat key, and the first keyway and the second keyway are flat grooves.

[0016] Furthermore, the connecting key is a semicircular key, the second keyway is a semicircular keyway, the first keyway is a flat slot, the flat surface of the semicircular key is clamped in the first keyway, and the semicircular surface of the semicircular key is clamped in the semicircular keyway.

[0017] Furthermore, the number of the first keyway and the number of the second keyway are both 2, the first keyway is symmetrically arranged on the outer circumference of the handle shaft; the second keyway is symmetrically arranged on the inner surface of the connecting sleeve.

[0018] Compared with the prior art, the invention can achieve the following beneficial effects: the invention embeds the connecting sleeve in the mounting hole of the handle ball, designs the shape of the connecting sleeve and the shape of the mounting hole into a rectangle, and connects the handle shaft to the connecting sleeve through a connecting key, thereby increasing the contact area and preventing the handle ball from loosening or rotating. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0020] Figure 1 is a schematic diagram of the structure of an aerospace control handle provided according to an embodiment of the present invention;

[0021] Figure 2 yes Figure 1 Section along AA;

[0022] Figure 3 is a schematic structural diagram of a handle shaft provided according to an embodiment of the present invention;

[0023] Figure 4 is a schematic diagram of the structure of a handle ball provided according to an embodiment of the present invention;

[0024] Figure 5 is a schematic structural diagram of a connecting sleeve provided according to an embodiment of the present invention.

[0025] The reference numerals include: 1. handle shaft; 11. external thread; 12. first keyway; 13. retaining groove; 2. handle ball; 21. mounting hole; 22. mounting portion; 23. threaded hole; 3. connecting sleeve; 31. connecting body; 32. second keyway; 33. circular boss; 4. connecting key; 5. shaft retaining spring. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the invention more clear, the invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the invention and do not constitute a limitation of the invention.

[0027] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0029] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 invention can be understood according to specific circumstances.

[0030] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0031] like Figure 1-Figure 5As shown, an aerospace control handle provided by an embodiment of the present invention includes: a handle shaft 1, a handle ball 2, a connecting sleeve 3 and a connecting key 4; a coupling 14 is provided at one end of the handle shaft 1, and an external thread 11 is provided at the other end; a first keyway 12 is provided on the outer circumference of the handle shaft 1, the handle ball 2 includes a mounting hole 21 and a threaded hole 23 passing through the mounting hole, and the threaded hole 23 matches the external thread 11; the connecting sleeve 3 is embedded in the mounting hole 21; a second keyway 32 is provided in the connecting sleeve 3; the connecting key 4 is connected in the first keyway 12 and the second keyway 32.

[0032] Therefore, by providing the connecting sleeve 3 and the connecting key 4, the contact area is increased to prevent the handle ball 3 from loosening or rotating.

[0033] In this embodiment, the aerospace control handle further includes a shaft retaining spring 5 , which is disposed at the retaining groove 13 of the handle shaft 1 to prevent the connecting sleeve 3 from axially moving.

[0034] like Figure 4 As shown, the mounting hole 21 extends outward from the mouth of the handle ball 2 to form the mounting portion 22 or extends inward from the mouth of the handle ball 2 to form the mounting portion 22. The mounting hole 21 is rectangular in shape.

[0035] When the mounting hole 21 is formed by extending outward from the mouth of the handle ball 2, the mouth of the handle ball 2 extends outward to form a cylindrical shape, and the shape of the mounting hole 21 is the shape of the inner wall of the cylinder; when the mounting hole 21 extends inward from the mouth of the handle ball 2, the handle ball 2 is recessed inward from the opening to form the mounting hole 21.

[0036] like Figure 5 As shown, the connecting sleeve 3 includes a connecting body 31 and a boss 33. The connecting body 31 is rectangular in shape and matches the mounting hole 21. The connecting body 31 is provided with a penetrating connecting hole 34 along the axis. The handle shaft 1 passes through the connecting hole 34 and is connected to the handle ball 2. The end surface of the circular boss 33 close to the connecting body 31 coincides with the outer end surface of the mounting hole 21;

[0037] In this embodiment, the material of the connecting sleeve 3 is copper. The handle ball 2 is made of non-metallic material, so the size of the square hole of the mounting portion 22 and the size of the outer side of the connecting sleeve 3 are designed to be interference fit. When the mounting hole 21 is heated, its size is increased to facilitate the embedding of the connecting sleeve 3. When the mounting portion 22 is cooled, the mounting hole 21 and the connecting sleeve 3 are tightly matched, so that the connecting sleeve 3 is fixed in the mounting hole 21.

[0038] At the same time, the shape of the mounting hole 21 and the outer shape of the connecting body 31 are designed to be rectangular, which has the following advantages:

[0039] A. Strong load-bearing capacity: Because the rectangular hole structure is relatively strong, it can withstand larger torque and axial load.

[0040] B. Easy installation: When installing, you only need to insert the shaft into the rectangular hole to complete the connection, which is relatively simple and convenient.

[0041] C. Capable of transmitting greater power: Due to its stable structure, it can transmit greater power.

[0042] Embodiment 1:

[0043] The connecting key 4 is a flat key, and the first key groove 11 and the second key groove 32 match the flat key.

[0044] Embodiment 2:

[0045] The connecting key 4 is a semicircular key, and the second keyway 32 is a semicircular keyway. The plane of the semicircular key is clamped in the first keyway 11, and the semicircular shape of the semicircular key is clamped in the semicircular keyway.

[0046] Furthermore, the number of the first key groove 11 and the number of the second key groove 32 are both 2, and the first key groove 11 is symmetrically arranged on the outer circumference of the handle shaft 1; the second key groove 32 is symmetrically arranged on the inner surface of the connecting sleeve 3.

[0047] In this embodiment, the number of the first keyway 11, the second keyway 32 and the connecting block 4 is set to 2 in order to evenly distribute them on the circumference to enhance the bearing capacity of the handle shaft 1 and the handle ball 2. At the same time, the connecting block 4 is set to a flat key or a semicircular key in order to simplify its structure and reduce the manufacturing cost.

[0048] In other embodiments, the number of the first key groove 11 , the second key groove 32 and the connecting block 4 may be set to be greater than two.

[0049] A method for assembling a ball head of an aerospace control handle, for assembling an aerospace control handle, comprises the following steps:

[0050] S1. Pre-install the shaft retaining ring and connecting sleeve on the handle shaft, between the retaining groove and the coupling.

[0051] S2. Install the connecting key into the first keyway.

[0052] S3. Push the handle shaft into the handle ball, and rotate the handle ball to screw the first thread and the second thread into place.

[0053] S4. Install the heating handle ball in the installation hole, align the second keyway with the connecting key, and push the connecting sleeve into the installation hole.

[0054] S5. Use the retaining ring to clamp the shaft into the slot to complete the fixed connection between the handle shaft and the handle ball.

[0055] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

[0056] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An aerospace control handle, characterized in that: include: A handle shaft, one end of which is provided with a coupling, and the other end of which is provided with an external thread; a first keyway is provided on the outer circumference of the handle shaft; A handle ball, wherein a mounting hole and a threaded hole penetrating the mounting hole are arranged inside the handle ball, and the threaded hole matches the external thread; A connecting sleeve, the connecting sleeve is installed between the mounting hole and the handle shaft, and a second keyway is provided in the connecting sleeve; A connecting key is connected in the first key slot and the second key slot.

2. The aerospace control handle according to claim 1, characterized in that: A clamping groove is arranged on the handle shaft, and the aerospace control handle further comprises a shaft clamping spring, which is arranged at the clamping groove of the handle shaft to prevent the connecting sleeve from moving axially.

3. The aerospace control handle according to claim 1, characterized in that: The mounting hole extends outward from the mouth of the handle ball to form a mounting portion or extends inward from the mouth of the handle ball to form a mounting portion, and the mounting hole is arranged inside the mounting portion.

4. The aerospace control handle according to claim 3, characterized in that: The shape of the mounting hole is rectangular.

5. The aerospace control handle according to claim 4, characterized in that: The connecting sleeve includes a connecting body and a circular boss. The connecting body is rectangular in shape and matches the mounting hole. The connecting body is provided with a penetrating connecting hole along the axis. The handle shaft passes through the connecting hole and is connected to the handle ball. The end face of the circular boss close to the connecting body abuts against the outer end face of the mounting hole.

6. The aerospace control handle according to claim 5, characterized in that: The connecting sleeve is made of copper.

7. The aerospace control handle according to claim 1, characterized in that: The connecting key is a flat key, and the first keyway and the second keyway are flat grooves.

8. The aerospace control handle according to claim 1, characterized in that: The connecting key is a semicircular key, the second keyway is a semicircular keyway, the first keyway is a flat slot, the flat surface of the semicircular key is clamped in the first keyway, and the semicircular surface of the semicircular key is clamped in the semicircular keyway.

9. The aerospace control handle according to claim 7 or 8, characterized in that: The number of the first key grooves and the number of the second key grooves are both 2, and the first key grooves are symmetrically arranged on the outer circumference of the handle shaft; the second key grooves are symmetrically arranged on the inner surface of the connecting sleeve.

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