Lock catch

Abstract

The utility model provides a lock catch which is used for connecting a paddle and a paddle root base, the lock catch comprises a lock catch body and elastic ends arranged at the two ends of the lock catch body respectively, a locking space is defined by the lock catch body and the two elastic ends, and the lock catch is connected with the paddle root base through the locking space so as to connect the paddle and the paddle root base. The opposite sides of the two elastic ends are provided with first protruding parts respectively, the first protruding parts are in smooth connection with the lock catch body, and first grooves are formed by the first protruding parts and the lock catch body. The paddle root base is provided with a second protruding part and a second groove, the second protruding part is in smooth connection with the second groove, the first protruding part is detachably connected with the second groove, and the first groove is detachably connected with the second protruding part. The lock catch is simple in structure, convenient to disassemble and assemble and convenient to replace, the purpose of changing and fixing the use angle of the blade root of the blade can be rapidly achieved without auxiliary tools, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lock buckle structures, in particular to a lock buckle. Background Art

[0002] As drones are used in more and more scenarios, it is often necessary to change the propeller pitch of the drone to adapt to different usage scenarios in order to achieve efficient application. Therefore, new requirements are put forward for the pitch change method of the drone.

[0003] The power assembly of a drone generally includes a motor, propeller blades, and a propeller root base connecting the motor and the propeller blades. The propeller root of the propeller blade is fixedly connected to the propeller root base through a fixed lock. Specifically, the fixed lock is provided with a mounting hole, and the propeller root base is fixedly connected to the propeller blade by the cooperation of bolts and the mounting hole.

[0004] However, in the prior art, the method of fixing the propeller root base and the propeller blade by screwing a fixed lock buckle requires the use of auxiliary tools to disassemble and replace such fixed lock buckle when the use angle of the propeller root needs to be changed to adjust the pitch of the propeller blade, resulting in limited disassembly and assembly and a more cumbersome process. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a lock, which aims to solve the problem in the prior art of fixing the propeller root base and the blade by screwing the fixed lock. When the use angle of the propeller root needs to be changed to adjust the blade pitch, auxiliary tools are needed to disassemble and replace such fixed lock, resulting in limited disassembly and assembly and a more cumbersome process.

[0006] The utility model provides a lock buckle for connecting a propeller blade and a propeller root base, the lock buckle comprises a lock buckle body and elastic ends respectively arranged at two ends of the lock buckle body, the lock buckle body is connected to the propeller blade, the lock buckle body and the two elastic ends form a locking space, and the lock buckle is clamped to the propeller root base through the locking space to fix the propeller blade and the propeller root base;

[0007] A first protrusion is provided on one side opposite to the two elastic ends, and the first protrusion is smoothly connected to the lock body and forms a first groove with the lock body;

[0008] The blade root base is provided with a second protrusion and a second groove, the second protrusion is smoothly connected to the second groove, the first protrusion is detachably connected to the second groove, and the first groove is detachably connected to the second protrusion.

[0009] Compared with the prior art, the lock buckle of the utility model has the following beneficial effects: the lock buckle of the utility model has a simple structure, is easy to disassemble and assemble, and is easy to replace. It can quickly achieve the purpose of changing and fixing the use angle of the blade root without the aid of auxiliary tools, greatly improving work efficiency. Specifically, by respectively setting elastic ends at both ends of the lock buckle body, the locking space surrounded by the lock buckle body and the two elastic ends can realize the connection between the lock buckle and the blade root base, and then realize the connection between the blade and the blade root base. During the actual assembly process of the lock buckle and the blade root base, when the first protrusion on the elastic end contacts the second protrusion on the blade root base, the elastic end is forced to rebound outward until the second protrusion enters the second groove, and the elastic end rebounds, and the first protrusion enters the second groove on the blade root base, thereby realizing the fixed connection between the lock buckle and the blade root base, so that the blade root of the blade is fixed on the blade root base, and the purpose of fixing the use angle of the blade is achieved.

[0010] In addition, the lock buckle according to the utility model may also have the following additional technical features:

[0011] Furthermore, the two elastic ends are symmetrically arranged with respect to the lock body.

[0012] Furthermore, the lock body includes a buckle portion and connecting portions provided at two ends of the buckle portion, and the first protrusion is smoothly connected to a side surface of the connecting portion to form the first groove.

[0013] Furthermore, the buckle portion is provided with a slot adapted to the root of the blade, the root of the blade is detachably connected to the slot, and the slot is communicated with the locking space.

[0014] Furthermore, the lock buckle also includes a positioning portion, and the positioning portion is arranged on one side of the lock buckle body.

[0015] Furthermore, the positioning portion is arranged on one side of the buckle portion, and the positioning portion and the clamping slot form a limiting space.

[0016] Furthermore, a positioning groove adapted to the positioning portion is provided on the propeller root base, and the positioning portion is detachably connected to the positioning groove.

[0017] Furthermore, in the length direction of the lock body, the length of the positioning portion is not greater than the length of the buckle portion.

[0018] Furthermore, the material of the lock buckle is a plastic material. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional structural schematic diagram of the lock buckle of the utility model;

[0020] Figure 2It is a schematic structural diagram of the lock buckle of the utility model in a first viewing angle;

[0021] Figure 3 It is a schematic structural diagram of the lock buckle of the utility model in a second viewing angle;

[0022] Figure 4 It is another three-dimensional structural schematic diagram of the lock buckle of the utility model;

[0023] Figure 5 This is a schematic cross-sectional structure diagram of the lock buckle of the utility model in use state;

[0024] Figure 6 It is a structural schematic diagram of the lock buckle of the utility model in use at a certain viewing angle.

[0025] Among them, the above-mentioned drawings include the following figure marks: 1-lock; 2-propeller root optical axis; 3-propeller root base; 4-propeller root; 11-lock body; 111-clamp part; 101-slot; 112-connecting part; 12-elastic end; 121-first protrusion; 122-first groove; 13-positioning part; 31-second protrusion; 32-second groove; 33-positioning groove.

[0026] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] See also Figures 1 to 6 The lock buckle 1 of the utility model comprises a lock buckle body 11 and elastic ends 12 arranged at both ends of the lock buckle body. The lock buckle 1 is used to connect Figure 5 The blade root optical axis 2 and the blade root base 3 of the middle blade. Specifically, a locking space is enclosed between the lock buckle body 11 and the two elastic ends 12, and the lock buckle 1 is connected to the blade root base 3 through the locking space, thereby achieving a fixed connection between the blade root 4 and the blade root base 3.

[0031] As an example, the lock body 11 includes a buckle portion 111 and connecting portions 112 arranged at both ends of the buckle portion 111, wherein the buckle portion 111 is provided with a slot 101 adapted to the blade root optical axis 2, and the two connecting portions 112 are arranged on the same side of the buckle portion 111, and one end of the connecting portion 112 away from the buckle portion 111 is connected to the elastic end 12. The buckle portion 111 is provided with a slot 101, and the slot 101 is connected to the locking space surrounded by the lock body 11 and the two elastic ends 12. In this embodiment, as Figure 2 and Figure 5 As shown, a slot 101 is opened in the middle area of ​​the buckle part 111, and the slot 101 includes a circular through groove adapted to the shape of the propeller root optical axis 2 and a limiting through groove connected to the circular groove, and the circular through groove is connected to the locking space through the limiting through groove, and the slot width of the limiting through groove is smaller than the slot width of the circular through groove at the connection point with the limiting through groove, so that the propeller root optical axis 2 can be limited and fixed inside the circular through groove.

[0032] It should be noted that the opening position of the slot 101 on the buckle portion 111 is not limited to the middle position in the above embodiment, but can also be opened at any position on the buckle portion 111 according to actual application requirements, so as to fix the different positions of the blade root optical axis 2 relative to the blade root base 3, thereby achieving the purpose of changing the use angle of the blade root.

[0033] Further, the two elastic ends 12 are symmetrically arranged about the lock body 11, and the first protrusions 121 are respectively provided on the opposite sides of the two elastic ends 12, and the first protrusions 121 are smoothly connected to the lock body 11 and form a first groove 122 with the lock body 11. Specifically, the first protrusion 121 is smoothly connected to a side surface of the connecting portion 112 located in the locking space, and forms a first groove 122 with the side surface. Correspondingly, the blade root base 3 is provided with a second protrusion 31 and a second groove 32, the second protrusion 31 is smoothly connected to the second groove 32, the first protrusion 121 is detachably connected to the second groove 32, and the first groove 122 is detachably connected to the second protrusion 31.

[0034] Furthermore, the material of the lock buckle 1 is a plastic plastic material, which has a certain elastic deformation performance, so that the two limiting parts and the two elastic ends 12 in the lock buckle body 10 located at the notch of the card slot 101 can be resilient and reset to a certain extent under the action of external force. In actual use, when the first protrusion 121 on the elastic end 12 contacts the second protrusion 31 on the blade root base 3, the elastic end 12 is forced to resilient until the second protrusion 31 enters the second groove 122, and the elastic end 12 rebounds, and the first protrusion 121 then enters the second groove 32 on the blade root base 3. In this process, the blade root optical axis 2 contacts the notch of the card slot 101, and the two sides of the notch of the card slot 101 resilient under the action of external force until the blade root optical axis 2 enters the middle card slot 101, and the two sides of the notch of the card slot 101 rebound to limit and fix the blade root optical axis 2 inside the card slot 101.

[0035] In order to improve the portability of the lock buckle 1 of the present invention during installation, the lock buckle 1 of the present invention further includes a positioning portion 13 for providing an installation direction to assist in positioning and installation. The positioning portion 13 is disposed on one side of the lock buckle body 11, and the connection surface between the positioning portion 13 and the lock buckle body 11 is connected to the card slot 101. In this embodiment, as Figure 3 and Figure 4 As shown, the positioning portion 13 is disposed on one side of the buckle portion 111 , and the positioning portion 13 and the locking slot 101 form a limiting space. At the same time, in the length direction of the lock body 11 , the length of the positioning portion 13 is not greater than the length of the buckle portion 111 .

[0036] It should be noted that the blade root optical axis 2 is arranged above the blade root 4 of the blade, and the middle part of the blade root base 3 is rotatably connected to the blade root 4, such as Figure 5 to Figure 6 As shown, the blade root base 3 is provided with a clamping structure adapted to the locking space shape on the lock buckle 1 and a positioning groove 33 adapted to the positioning portion 13, wherein the clamping structure is correspondingly provided with a second protrusion 31 and a second groove 32, and the positioning portion 13 is detachably connected to the positioning groove 33. The blade root 4 is rotated to change the use angle of the blade. During the rotation of the blade root 4, the relative position of the blade root optical axis 2 and the blade root base 3 will change accordingly. Therefore, in order to enable the blade root 4 to be used at a predetermined angle, the lock buckle 1 can be used to fix the relative position of the blade root optical axis 2 and the blade root base 3.

[0037] The principle of using the lock buckle in the propeller blade of the utility model is as follows: the installation direction of the lock buckle 1 is adjusted according to the matching relationship between the positioning groove 33 on the propeller root base 3 and the positioning portion 13, and then the position of the propeller root optical axis 2 is relatively adjusted according to the position of the clamping groove 101 on the clamping portion 111, for example, Figure 3As shown, the slot 101 on the lock buckle 1 is located in the middle position of the buckle part 111, and the blade root 4 is rotated accordingly so that the blade root optical axis 2 above the blade root 4 is located directly above the center of the cross section of the blade root base 3, and then the lock buckle 1 is manually aligned and pressed to fix it on the blade root base 3. In this process, the parts on both sides of the notch of the slot 101 on the lock buckle 1 and the elastic end 12 are adaptively elastic and reset, so that the blade root optical axis 2 can enter the slot 101 to achieve positioning, and at the same time, the clamping structure on the blade root base 3 can enter the locking space of the lock buckle 1 to complete the clamping of the lock buckle 1 and the blade root base. At this time, the relative position between the blade root optical axis 2 and the blade root base 3 is fixed, realizing the fixed connection between the blade root 4 and the blade root base 3, and finally the blade root 4 can be used at a predetermined angle.

[0038] In summary, the lock structure of the utility model is simple, easy to disassemble and assemble, and convenient to replace. It can quickly achieve the purpose of changing and fixing the blade's root use angle without the aid of auxiliary tools, greatly improving work efficiency. Specifically, by respectively setting elastic ends at both ends of the lock body, the locking space surrounded by the lock body and the two elastic ends can realize the connection between the lock and the root base, and then realize the connection between the blade and the root base. During the actual assembly process of the lock and the root base, when the first protrusion on the elastic end contacts the second protrusion on the root base, the elastic end is forced to spring outward until the second protrusion enters the second groove, and the elastic end rebounds, and the first protrusion enters the second groove on the root base, thereby realizing the fixed connection between the lock and the root base, so that the root of the blade is fixed on the root base, and the purpose of fixing the blade's use angle is achieved.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A lock buckle for connecting a blade and a blade base, characterized in that: The lock buckle comprises a lock buckle body and elastic ends respectively arranged at two ends of the lock buckle body, the lock buckle body is connected to the propeller blade, the lock buckle body and the two elastic ends form a locking space, and the lock buckle is clamped to the propeller root base through the locking space to fix the propeller blade and the propeller root base; A first protrusion is provided on one side opposite to the two elastic ends, and the first protrusion is smoothly connected to the lock body and forms a first groove with the lock body; The blade root base is provided with a second protrusion and a second groove, the second protrusion is smoothly connected to the second groove, the first protrusion is detachably connected to the second groove, and the first groove is detachably connected to the second protrusion.

2. The lock buckle according to claim 1, characterized in that: The two elastic ends are symmetrically arranged with respect to the lock body.

3. The lock buckle according to claim 1, characterized in that: The lock body includes a buckle portion and connecting portions arranged at two ends of the buckle portion, and the first protrusion is smoothly connected to a side surface of the connecting portion to form the first groove.

4. The lock buckle according to claim 3, characterized in that: The buckle portion is provided with a slot adapted to the root of the blade, the root of the blade is detachably connected to the slot, and the slot is communicated with the locking space.

5. The lock buckle according to claim 4, characterized in that: The lock buckle further includes a positioning portion, and the positioning portion is arranged on one side of the lock buckle body.

6. The lock buckle according to claim 5, characterized in that: The positioning portion is arranged on one side of the buckle portion, and the positioning portion and the clamping slot form a limiting space.

7. The lock buckle according to claim 5, characterized in that: The blade root base is provided with a positioning groove adapted to the positioning portion, and the positioning portion is detachably connected to the positioning groove.

8. The lock buckle according to claim 5, characterized in that: In the length direction of the lock body, the length of the positioning portion is not greater than the length of the buckle portion.

9. The lock buckle according to claim 1, characterized in that: The material of the lock buckle is a plastic plastic material.

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