A foldable pitot tube device

Abstract

The utility model discloses a foldable pitot tube device, which relates to the technical field of unmanned aerial vehicles, and comprises a pitot tube, an extension tube and a folding mechanism connected in sequence; wherein the folding mechanism comprises a first connecting seat, a second connecting seat and a connecting sleeve; a first drag reduction rectifying part is formed on the side of the first connecting seat facing the pitot tube, and a second drag reduction rectifying part is formed on the side of the connecting sleeve away from the pitot tube; an elastic rubber ring is arranged on the side of the first drag reduction rectifying part away from the pitot tube; in the folded state of the foldable pitot tube device, the connecting sleeve is separated from the first connecting seat; in the unfolded state of the foldable pitot tube device, one end of the connecting sleeve abuts against the elastic rubber ring, and the first drag reduction rectifying part, the elastic rubber ring, the connecting sleeve and the second drag reduction rectifying part form a streamlined structure. The utility model can effectively reduce the airflow impact on the folding mechanism, and effectively reduce the risk of loose connection of the folding mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles, in particular to a foldable pitot tube device. Background Art

[0002] Drones are usually equipped with a long pitot tube at the front of the fuselage or wing. The pitot tube is a tubular device that measures the total pressure and static pressure of the airflow to determine the airflow speed. Usually, the pitot tube is installed on the drone based on a folding mechanism so that the pitot tube can be folded up when the drone is stored and transported.

[0003] The Chinese patent application number 2023223854684 discloses a pitot tube folding mechanism, which includes a rotating seat, a fixed seat and a locking ring. The rotating seat and the fixed seat are hinged, and the locking ring is sleeved on the rotating seat and the fixed seat. The folding mechanism can realize the folding of the pitot tube by means of the hinged relationship between the rotating seat and the fixed seat; the locking ring can be screwed and moved between the mutually hinged rotating seat and the fixed seat, so that the rotating seat and the fixed seat on the same axis after unfolding can be firmly locked.

[0004] However, the folding mechanism is subject to great airflow impact when the drone is flying at high speed, causing the folding mechanism to vibrate easily, resulting in the risk of loosening the connection between the locking ring, the rotating seat and the fixed seat. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art. The utility model provides a foldable pitot tube device, whose folding mechanism is provided with a first drag reduction rectification part, a second drag reduction rectification part and an elastic rubber ring, which can effectively reduce the airflow impact on the folding mechanism and effectively reduce the risk of loose connection of the folding mechanism.

[0006] The utility model provides a foldable pitot tube device, comprising a pitot tube, an extension tube and a folding mechanism connected in sequence; wherein the folding mechanism comprises a first connecting seat fixedly connected to the extension tube, a second connecting seat hinged to the first connecting seat, and a connecting sleeve sleeved on the first connecting seat and the second connecting seat;

[0007] The first connection seat is formed with a first drag reduction rectifying part on a side facing the pitot tube, and the connection sleeve is formed with a second drag reduction rectifying part on a side away from the pitot tube; the first connection seat is provided with an elastic rubber ring on a side of the first drag reduction rectifying part away from the pitot tube;

[0008] When the foldable pitot tube device is in a folded state, the connecting sleeve is separated from the first connecting seat; when the foldable pitot tube device is in an unfolded state, one end of the connecting sleeve abuts against the elastic rubber ring, and the first drag reduction rectifying part, the elastic rubber ring, the connecting sleeve and the second drag reduction rectifying part form a streamlined structure.

[0009] Specifically, the diameter of the first drag reduction rectifying portion gradually decreases toward a direction approaching the pitot tube, and the diameter of the second drag reduction rectifying portion gradually decreases toward a direction away from the pitot tube.

[0010] Specifically, an end of the first connection seat away from the pitot tube is provided with an external threaded portion, an end of the second connection seat close to the first connection seat protrudes radially outward to form an external convex portion, one end of the connection sleeve is provided with an internal threaded portion, and the other end of the connection sleeve protrudes radially inward to form an internal convex portion;

[0011] In the unfolded state of the foldable pitot tube device, the external threaded portion and the internal threaded portion cooperate with each other, and the internal convex portion and the external convex portion abut against each other along the axial direction of the pitot tube.

[0012] Specifically, a first hinged portion and a first bite portion are formed protrudingly at one end of the first connection seat away from the pitot tube, a second hinged portion and a second bite portion are formed protrudingly at one end of the second connection seat close to the first connection seat, and the first hinged portion and the second hinged portion are hingedly connected;

[0013] In the unfolded state of the foldable pitot tube device, the first engaging portion and the second engaging portion are plugged into each other.

[0014] Specifically, the first connection seat is formed with a first mounting through hole, and the extension tube is fixedly arranged in the first mounting through hole; the second connection seat is formed with a second mounting through hole, and the second mounting through hole is used to connect the drone body or the drone wing;

[0015] In the unfolded state of the foldable pitot tube device, the first mounting through hole and the second mounting through hole are communicated with each other.

[0016] Specifically, the first connecting seat is provided with an annular groove on a side of the first drag reduction rectifying portion away from the pitot tube, and the elastic rubber ring is embedded in the annular groove.

[0017] Specifically, when the foldable pitot tube device is in a folded state, the extension tube is fixed to the drone body or the drone wing based on a snap bracket.

[0018] Specifically, one end of the buckle bracket is provided with an elastic bayonet, and the other end of the buckle bracket is provided with a fixing fork, and the fixing fork is used to fix and connect the drone body or the drone wing;

[0019] When the foldable pitot tube device is in a folded state, the extension tube is embedded in the elastic bayonet.

[0020] Specifically, the angle between the first connecting seat and the second connecting seat ranges from 90° to 180°.

[0021] Specifically, a fixing sleeve is provided at the tail of the pitot tube, and the extension tube is fixedly arranged in the fixing sleeve.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] In the foldable pitot tube device of the utility model, the first drag reduction and rectification part, the elastic rubber ring, the connecting sleeve and the second drag reduction and rectification part form a streamlined structure, which can effectively reduce the airflow impact on the folding mechanism when the UAV is flying at high speed, thereby significantly reducing the vibration of the folding mechanism, and can effectively ensure the connection stability between the first connecting seat, the second connecting seat and the connecting sleeve, that is, effectively reduce the risk of loose connection of the folding mechanism; when the connecting sleeve and the first connecting seat are connected to each other, elastic abutment is performed through the elastic rubber ring, which can effectively ensure the connection stability of the connecting sleeve and the first connecting seat, so that when the folding mechanism is impacted by airflow, the connecting sleeve is not easy to rotate loose, further reducing the risk of loose connection of the folding mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 1 is a schematic diagram of the unfolded state of the foldable pitot tube device in the embodiment of the utility model;

[0026] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle A area;

[0027] Figure 3 It is a schematic diagram of the folding state of the folding mechanism in the embodiment of the utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the first connecting seat in the embodiment of the utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the second connecting seat in the embodiment of the utility model;

[0030] Figure 6 It is a structural schematic diagram of a connecting sleeve in an embodiment of the utility model;

[0031] Figure 7 It is a schematic cross-sectional structure diagram of the folding mechanism in the embodiment of the utility model;

[0032] Figure 8 1 is a schematic diagram of a folded state of a foldable pitot tube device in an embodiment of the utility model;

[0033] Fig. 9 It is a schematic diagram of the structure of the pitot tube in the embodiment of the utility model.

[0034] In the accompanying drawings, 10, pitot tube; 11, fixing sleeve; 12, first opening; 13, connecting ear; 20, extension tube; 30, folding mechanism; 40, snap bracket; 41, elastic bayonet; 42, fixing fork; 110, first connecting seat; 111, first drag reduction and rectification part; 112, elastic rubber ring; 113, external threaded part; 114, first hinged part; 115, first bite part; 116, first mounting through hole; 117, annular groove; 120, second connecting seat; 121, external protrusion; 122, second hinged part; 123, second bite part; 124, second mounting through hole; 130, connecting sleeve; 131, second drag reduction and rectification part; 132, internal threaded part; 133, internal protrusion. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] The utility model provides a foldable pitot tube device. Figure 1 The figure shows a schematic diagram of the unfolded state of the foldable pitot tube device in the embodiment of the utility model, wherein the foldable pitot tube device comprises a pitot tube 10, an extension tube 20 and a folding mechanism 30 connected in sequence; wherein the folding mechanism 30 comprises a first connecting seat 110 fixedly connected to the extension tube 20, a second connecting seat 120 hinged to the first connecting seat 110, and a connecting sleeve 130 sleeved on the first connecting seat 110 and the second connecting seat 120;

[0037] Figure 2 Shows Figure 1In the structural schematic diagram of the middle A area, the first connection seat 110 is formed with a first drag reduction rectifying portion 111 on the side facing the pitot tube 10, and the connection sleeve 130 is formed with a second drag reduction rectifying portion 131 on the side away from the pitot tube 10; the first connection seat 110 is provided with an elastic rubber ring 112 on the side of the first drag reduction rectifying portion 111 away from the pitot tube 10;

[0038] Figure 3 FIG. 1 shows a schematic diagram of the folding state of the folding mechanism in the embodiment of the utility model. In the folded state of the foldable pitot tube device, the connecting sleeve 130 is separated from the first connecting seat 110; see FIG. Figure 2 In the unfolded state of the foldable pitot tube device, one end of the connecting sleeve 130 abuts against the elastic rubber ring 112, and the first drag reduction rectifying part 111, the elastic rubber ring 112, the connecting sleeve 130 and the second drag reduction rectifying part 131 form a streamlined structure.

[0039] In the foldable pitot tube device of the utility model, the first drag reduction rectifying part 111, the elastic rubber ring 112, the connecting sleeve 130 and the second drag reduction rectifying part 131 form a streamlined structure, which can effectively reduce the airflow impact on the folding mechanism 30 when the UAV is flying at high speed, thereby significantly reducing the vibration of the folding mechanism 30, and can effectively ensure the connection stability between the first connecting seat 110, the second connecting seat 120 and the connecting sleeve 130, that is, effectively reduce the risk of loose connection of the folding mechanism 30; when the connecting sleeve 130 and the first connecting seat 110 are connected to each other, they are elastically abutted by the elastic rubber ring 112, which can effectively ensure the connection stability of the connecting sleeve 130 and the first connecting seat 110, so that when the folding mechanism 30 is impacted by airflow, the connecting sleeve 130 is not easy to rotate loose, further reducing the risk of loose connection of the folding mechanism 30.

[0040] In some specific embodiments, see Figure 2 The diameter of the first drag reduction rectifying portion 111 gradually decreases toward the direction approaching the pitot tube 10, and the diameter of the second drag reduction rectifying portion 131 gradually decreases toward the direction away from the pitot tube 10, which can effectively reduce the airflow impact on the folding mechanism 30.

[0041] Figure 4 The structure diagram of the first connecting socket in the embodiment of the utility model is shown. Figure 5 The schematic diagram of the structure of the second connecting socket in the embodiment of the utility model is shown. Figure 6 The schematic diagram of the structure of the connecting sleeve in the embodiment of the utility model is shown. Figure 7 A cross-sectional structural diagram of the folding mechanism in an embodiment of the utility model is shown.

[0042] In some specific embodiments, see Figures 4 to 7 The first connecting seat 110 is provided with an external threaded portion 113 at one end away from the pitot tube 10, and the second connecting seat 120 is provided with an external convex portion 121 protruding radially outward at one end close to the first connecting seat 110. An internal threaded portion 132 is provided at one end of the connecting sleeve 130, and the other end of the connecting sleeve 130 protrudes radially inward to form an internal convex portion 133; when the foldable pitot tube device is in the unfolded state, the external threaded portion 113 and the internal threaded portion 132 cooperate with each other, and the internal convex portion 133 and the external convex portion 121 abut against each other along the axial direction of the pitot tube 10.

[0043] The external threaded portion 113 of the first connection seat 110 and the internal threaded portion 132 of the connection sleeve 130 can form a good locking effect in the axial direction of the pitot tube 10; at the same time, the connection sleeve 130 firmly presses the external convex portion 121 of the second connection seat 120 along the axial direction of the pitot tube 10 through the internal convex portion 133, so that the first connection seat 110 and the second connection seat 120 on the same axis after unfolding can be firmly locked. Moreover, the connection sleeve 130 is only connected to the first connection seat 110 through threads, which reduces the difficulty of twisting and moving the connection sleeve 130, and facilitates the unfolding or folding of the folding mechanism 30.

[0044] In some specific embodiments, see Figure 4 , Figure 5 and Figure 7 The first connecting seat 110 has a first hinged portion 114 and a first bite portion 115 protrudingly formed on one end away from the pitot tube 10, and the second connecting seat 120 has a second hinged portion 122 and a second bite portion 123 protrudingly formed on one end close to the first connecting seat 110, and the first hinged portion 114 and the second hinged portion 122 are hinged; when the foldable pitot tube device is in the unfolded state, the first bite portion 115 and the second bite portion 123 are plugged into each other.

[0045] The first hinged portion 114 and the second hinged portion 122 are hinged to realize the folding of the pitot tube device; combined with the first bite portion 115 and the second bite portion 123, the first connecting seat 110 and the second connecting seat 120 can be stably located on the same axis after being unfolded.

[0046] Specifically, the first bite portion 115 is formed with a bite protrusion, and the second bite portion 123 is formed with a bite groove. The bite protrusion is inserted into the bite groove, which is beneficial to improve the connection stability between the first connection seat 110 and the second connection seat 120.

[0047] In some specific embodiments, see Figure 7The first connection seat 110 is formed with a first mounting through hole 116, and the extension tube 20 is fixedly arranged in the first mounting through hole 116; the second connection seat 120 is formed with a second mounting through hole 124, and the second mounting through hole 124 is used to connect to the drone body or the wing of the drone; when the foldable pitot tube device is in the unfolded state, the first mounting through hole 116 and the second mounting through hole 124 are connected to each other. In this way, the hose connecting the pitot tube 10 to the drone body can pass through the first mounting through hole 116 and the second mounting through hole 124, so that the hose can still be well stored inside the pipe and will not be exposed to the outside.

[0048] In some specific embodiments, see Figure 4 The first connecting seat 110 is provided with an annular groove 117 on the side of the first drag reduction rectifying part 111 away from the pitot tube 10 , and the elastic rubber ring 112 is embedded in the annular groove 117 , thereby ensuring the installation stability of the elastic rubber ring 112 .

[0049] Specifically, the elastic rubber ring 112 is a rubber ring with good elasticity. It can provide a certain axial elastic force when the connecting sleeve 130 and the first connecting seat 110 are connected, which can not only make the external threaded portion 113 of the first connecting seat 110 and the internal threaded portion 132 of the connecting sleeve 130 more tightly combined, but also enhance the friction between the connecting sleeve 130 and the first connecting seat 110, thereby effectively preventing the connecting sleeve 130 from generating relative rotation, ensuring the connection stability between the connecting sleeve 130 and the first connecting seat 110, and reducing the risk of loose connection of the folding mechanism 30.

[0050] Figure 8 A schematic diagram of the folded state of the foldable pitot tube device in an embodiment of the utility model is shown. In the folded state of the foldable pitot tube device, the extension tube 20 is fixed to the drone body or the wing of the drone based on the snap bracket 40, thereby ensuring the stability of the pitot tube 10 in the folded state and preventing the pitot tube 10 from shaking and being damaged during transportation.

[0051] Specifically, an elastic bayonet 41 is provided at one end of the snap bracket 40, and a fixing fork 42 is provided at the other end of the snap bracket 40, and the fixing fork 42 is used to fix the connection to the drone body or the drone wing; when the foldable pitot tube device is in the folded state, the extension tube 20 is embedded in the elastic bayonet 41, and the elastic bayonet 41 is elastic, which makes it easy for people to take out or embed the extension tube 20 into the elastic bayonet 41, and it is easy to use.

[0052] In some specific embodiments, the angle between the first connecting seat 110 and the second connecting seat 120 ranges from 90° to 180°; preferably, when folding the pitot tube device, the connecting sleeve 130 is separated from the first connecting seat 110, and the angle between the first connecting seat 110 and the second connecting seat 120 can be folded from 180° to 90°, thereby completing the folding of the pitot tube device, preventing the pitot tube 10 from protruding from the drone body or the drone wing, and facilitating the storage and transportation of the drone.

[0053] Fig. 9 The schematic diagram of the structure of the pitot tube in the embodiment of the utility model is shown, the tail of the pitot tube 10 is provided with a fixing sleeve 11, and the extension tube 20 is fixedly arranged in the fixing sleeve 11, so as to facilitate the connection between the pitot tube 10 and the fixing sleeve 11. Specifically, the fixing sleeve 11 is formed with a first opening 12, and connecting ears 13 are formed on both sides of the first opening 12; after the extension tube 20 is inserted into the fixing sleeve 11, the connecting ears 13 on both sides of the first opening 12 are locked with bolts.

[0054] In the foldable pitot tube device of the utility model, the first drag reduction rectifying part 111, the elastic rubber ring 112, the connecting sleeve 130 and the second drag reduction rectifying part 131 form a streamlined structure, which can effectively reduce the airflow impact on the folding mechanism 30 when the UAV is flying at high speed, thereby significantly reducing the vibration of the folding mechanism 30, and can effectively ensure the connection stability between the first connecting seat 110, the second connecting seat 120 and the connecting sleeve 130, that is, effectively reduce the risk of loose connection of the folding mechanism 30; when the connecting sleeve 130 and the first connecting seat 110 are connected to each other, they are elastically abutted by the elastic rubber ring 112, which can effectively ensure the connection stability of the connecting sleeve 130 and the first connecting seat 110, so that when the folding mechanism 30 is impacted by airflow, the connecting sleeve 130 is not easy to rotate loose, further reducing the risk of loose connection of the folding mechanism 30.

[0055] Moreover, the connecting sleeve 130 and the first connecting seat 110 are connected based on a threaded connection, and the connecting sleeve 130 and the second connecting seat 120 can be locked at the same time, which facilitates the unfolding or folding of the folding mechanism 30; the first connecting seat 110 and the second connecting seat 120 are connected by a hinge part and a bite part, which is conducive to making the unfolded first connecting seat 110 and the second connecting seat 120 stably on the same axis; when folded, the extension tube 20 is fixed to the drone body or the drone wing based on the snap bracket 40, ensuring the stability of the pitot tube 10 in the folded state and preventing the pitot tube 10 from shaking and being damaged during transportation.

[0056] The foldable pitot tube device provided by the embodiment of the utility model is introduced in detail above. The principle and implementation mode of the utility model are described in detail using specific examples herein. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, according to the idea of ​​the utility model, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A foldable pitot tube device, comprising a pitot tube, an extension tube and a folding mechanism connected in sequence; wherein: The folding mechanism comprises a first connecting seat fixedly connected to the extension tube, a second connecting seat hinged to the first connecting seat, and a connecting sleeve sleeved on the first connecting seat and the second connecting seat; The invention is characterized in that a first drag reduction rectifying part is formed on a side of the first connection seat facing the pitot tube, and a second drag reduction rectifying part is formed on a side of the connection sleeve away from the pitot tube; an elastic rubber ring is provided on a side of the first drag reduction rectifying part away from the pitot tube of the first connection seat; When the foldable pitot tube device is in a folded state, the connecting sleeve is separated from the first connecting seat; when the foldable pitot tube device is in an unfolded state, one end of the connecting sleeve abuts against the elastic rubber ring, and the first drag reduction rectifying part, the elastic rubber ring, the connecting sleeve and the second drag reduction rectifying part form a streamlined structure.

2. The foldable pitot tube device according to claim 1, characterized in that: The diameter of the first drag reduction rectifying portion gradually decreases toward a direction approaching the pitot tube, and the diameter of the second drag reduction rectifying portion gradually decreases toward a direction away from the pitot tube.

3. The foldable pitot tube device according to claim 1, characterized in that: An end of the first connection seat away from the pitot tube is provided with an external threaded portion, an end of the second connection seat close to the first connection seat protrudes radially outward to form an external convex portion, one end of the connection sleeve is provided with an internal threaded portion, and the other end of the connection sleeve protrudes radially inward to form an internal convex portion; In the unfolded state of the foldable pitot tube device, the external threaded portion and the internal threaded portion cooperate with each other, and the internal convex portion and the external convex portion abut against each other along the axial direction of the pitot tube.

4. The foldable pitot tube device according to claim 1, characterized in that: The first connecting seat has a first hinged portion and a first bite portion protruding from one end away from the pitot tube, and the second connecting seat has a second hinged portion and a second bite portion protruding from one end close to the first connecting seat, and the first hinged portion and the second hinged portion are hingedly connected; In the unfolded state of the foldable pitot tube device, the first engaging portion and the second engaging portion are plugged into each other.

5. The foldable pitot tube device according to claim 1, characterized in that: The first connection seat is formed with a first mounting through hole, and the extension tube is fixedly arranged in the first mounting through hole; the second connection seat is formed with a second mounting through hole, and the second mounting through hole is used to connect the drone body or the drone wing; In the unfolded state of the foldable pitot tube device, the first mounting through hole and the second mounting through hole are communicated with each other.

6. The foldable pitot tube device according to claim 1, characterized in that: The first connecting seat is provided with an annular groove on a side of the first drag reduction rectifying part away from the pitot tube, and the elastic rubber ring is embedded in the annular groove.

7. The foldable pitot tube device according to claim 1, characterized in that: In the folded state of the foldable pitot tube device, the extension tube is fixed on the drone body or the drone wing based on the snap bracket.

8. The foldable pitot tube device according to claim 7, characterized in that: An elastic bayonet is provided at one end of the buckle bracket, and a fixing fork is provided at the other end of the buckle bracket, and the fixing fork is used to fix and connect the drone body or the drone wing; When the foldable pitot tube device is in a folded state, the extension tube is embedded in the elastic bayonet.

9. The foldable pitot tube device according to claim 1, characterized in that: The included angle between the first connecting seat and the second connecting seat ranges from 90° to 180°.

10. The foldable pitot tube device according to claim 1, characterized in that: A fixing sleeve is arranged at the tail of the pitot tube, and the extension tube is fixedly arranged in the fixing sleeve.

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