A connection device and a robot

Abstract

The utility model discloses embodiments relate to the technical field of connecting device, especially disclose a connecting device and robot, first quick -witted subassembly includes first connecting piece, and first connecting piece is provided with first threaded portion and first docking structure, and first connecting piece is used to install first to be connected spare, and second quick -witted subassembly includes second connecting piece and pressing plate, and pressing plate is used to be fixed in second to be connected spare, and first connecting piece sets up in pressing plate, and second connecting piece can rotate around first axis relative to pressing plate, and second connecting piece is provided with second threaded portion, and pressing plate is provided with second docking structure, and second threaded portion is used for with first threaded portion screw joint, to make first to be connected spare and second to be connected spare connect, and second docking structure and first docking structure butt joint, to limit first to be connected spare relative to second to be connected spare and rotate. Through the above -mentioned way, the utility model discloses embodiments can make first quick -witted subassembly and second quick -witted subassembly when carrying out the dismounting, only need to rotate second connecting piece, and the convenience of connecting device is promoted.

Description

Technical Field

[0001] This utility model relates to the field of connection device technology, and in particular to a connection device and a robot. Background Technology

[0002] With the popularization of industrialization and the rapid development of robotics technology, robots are increasingly being applied to industrial production and intelligent robotics fields due to their advantages such as high efficiency and high precision.

[0003] In the process of realizing this utility model, the inventors discovered that: Currently, in order to achieve complex actions, robots need to disassemble and assemble various complex parts. In order to ensure the connection strength and stability between complex parts, threaded connections are usually used. However, existing connection devices set the internal and external threads on the two parts that need to be assembled, such as on the two joints of the robot. When the two joints need to be disassembled, one of the two joints needs to be rotated. If the size or weight of the rotating joint is large, it will make the disassembly and assembly of robot parts extremely inconvenient. Utility Model Content

[0004] This utility model provides a connecting device and a robot. The main technical problem it solves is that existing connecting structures require at least one of the components to be connected to rotate together in order to connect the two components. When the components to be connected are large in size or weight, it is extremely inconvenient to assemble and disassemble the two components.

[0005] To solve the above-mentioned technical problems, the present invention provides a connecting device comprising: a first quick-connect assembly and a second quick-connect assembly. The first quick-connect assembly includes a first connector, which has a first threaded portion and a first mating structure, and is used to fixably connect a first component to be connected. The second quick-connect assembly includes a second connector and a pressure plate, which is used to fixably connect a second component to be connected. The second connector is rotatably mounted between the pressure plate and the second component to be connected around a first axis. The second connector has a second threaded portion with the first axis as its central axis, and the pressure plate has a second mating structure. The second quick-connect assembly and the first quick-connect assembly are configured such that when the second mating structure and the first mating structure are aligned along the direction surrounding the first axis, and the second threaded portion and the first threaded portion are in an initial installation position where they can be screwed together, rotating the second connector around a preset direction allows the second threaded portion to gradually screw onto the first threaded portion, and simultaneously allows the second mating structure to gradually mate with the first mating structure.

[0006] Optionally, the second connecting member includes a sleeve and a limiting ring. The limiting ring is fixed to one end of the sleeve, and the sleeve surrounds the pressure plate. The pressure plate includes a pressure plate and a mounting part. The mounting part is fixed to the end face of the pressure plate along its own thickness direction. In a direction perpendicular to the first axis, the cross-sectional area of ​​the mounting part is smaller than the cross-sectional area of ​​the pressure plate. The mounting part is used to pass through the limiting ring and fix the second component to be connected. The gap between the pressure plate and the second component to be connected is greater than the height of the limiting ring. The limiting ring is installed between the pressure plate and the second component to be connected so that the limiting ring can rotate around the first axis.

[0007] Optionally, the first threaded portion is an external thread surrounding the outer side of the first connector, and the second connector has an annular portion surrounding the pressure plate, and the second threaded portion is an internal thread disposed on the inner sidewall of the annular portion; or, the first connector further has an annular portion for surrounding the second connector, the first mating structure is located inside the annular portion, the first threaded portion is an internal thread disposed on the inner sidewall of the annular portion, and the second threaded portion is an external thread surrounding the outer side of the second connector.

[0008] Optionally, one of the first docking structure and the second docking structure is a locking protrusion, and the other of the first docking structure and the second docking structure is a locking groove. The first docking structure and the second docking structure are engaged through the interlocking of the locking protrusion and the locking groove. Alternatively, the first docking structure includes a first locking protrusion and a first locking groove, and the second docking structure includes a second locking protrusion and a second locking groove. The first docking structure and the second docking structure are engaged through the interlocking of the first locking protrusion and the second locking groove, and the interlocking of the second locking protrusion and the first locking groove.

[0009] Optionally, the latching protrusion includes a top surface and a side surface adjacent to the top surface. The top surface is the surface on the latching protrusion that is opposite to the latching groove along the first axial direction. The side surface is used to abut against the inner wall of the latching groove after the latching protrusion and the latching groove are engaged. The latching protrusion has a first transition surface between the top surface and the side surface. And / or, the latching groove includes an inner wall for abutting against the side surface of the latching protrusion after being engaged with the latching protrusion. The inner wall has a second transition surface near one end of the latching protrusion.

[0010] Optionally, the card protrusion includes a top surface, a side surface, and a second side surface. The top surface is the surface of the card protrusion that is opposite to the card groove along the first axis direction. The side surface and the second side surface are two sides of the card protrusion along its own width direction. The side surface is closer to the first threaded portion or the second threaded portion than the second side surface. The card protrusion is also provided with a clearance portion between the top surface and the side surface.

[0011] Optionally, the protrusion includes an inclined side surface, and the slot includes an inclined inner wall. After the protrusion and the slot are engaged, the inclined side surface and the inclined inner wall abut against each other, and the inclination angle of the inclined side surface relative to the first axis is equal to the inclination angle of the inclined inner wall relative to the first axis.

[0012] Optionally, one of the pressure plate and the first connecting member is provided with a positioning post, and the other of the pressure plate and the first connecting member without a positioning post is provided with a positioning hole. The positioning post and the positioning hole are used to ensure that the first mating structure and the second mating structure are aligned along the direction surrounding the first axis when they are plugged into each other, and to ensure that the second threaded part and the first threaded part are located in the initial installation position where they can be screwed into each other.

[0013] Optionally, the first quick-connect assembly further includes a first electrical connector, and the second quick-connect assembly further includes a second electrical connector. The second electrical connector and the first electrical connector are used to achieve electrical connection when the second mating structure is engaged with the first mating structure.

[0014] To solve the above-mentioned technical problems, another technical solution adopted by this utility model is to provide a robot, including the above-mentioned connecting device.

[0015] The beneficial effects of this utility model embodiment are as follows: Unlike the prior art, this utility model embodiment provides a connecting device including a first quick-connect assembly and a second quick-connect assembly. The first quick-connect assembly includes a first connector, which has a first threaded portion and a first mating structure. The first connector is used to fixably connect a first component to be connected. The second quick-connect assembly includes a second connector and a pressure plate. The pressure plate is used to fixably connect a second component to be connected. The second connector is rotatably mounted between the pressure plate and the second component to be connected around a first axis. The second connector has a second threaded portion with the first axis as its central axis. The pressure plate has a second mating structure. The second quick-connect assembly and the first quick-connect assembly are configured such that when the second mating structure and the first mating structure are aligned along the direction surrounding the first axis, and the second threaded portion and the first threaded portion are in an initial installation position where they can be screwed together, rotating the second connector around a preset direction allows the second threaded portion and the first threaded portion to gradually achieve screwing connection, and simultaneously allows the second mating structure and the first mating structure to gradually achieve snap-fit ​​connection. With the above structure, the present invention allows for the connection or separation of the first quick-connect component and the second quick-connect component simply by rotating the second connector when disassembly or assembly is required. Compared with the prior art, it eliminates the need to rotate the first and / or second components together, thus improving the convenience and user experience during disassembly and assembly. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0017] Figure 1 This is an exploded structural diagram of a connecting device connecting a first member to be connected and a second member to be connected, according to an embodiment of the present utility model. Figure 2 This is a schematic diagram of the assembly structure of a connecting device for connecting a first component to be connected and a second component to be connected, provided in an embodiment of this utility model. Figure 3 yes Figure 1 Enlarged view of part A in the middle; Figure 4 yes Figure 1 Enlarged view of part B in the middle; Figure 5 This is an exploded structural diagram of the first connecting member and the pressure plate of a connecting device provided in an embodiment of this utility model; Figure 6This is a cross-sectional exploded view of a connecting device provided in an embodiment of this utility model.

[0018] Icon labels: 100. Connecting device; 1. First quick-connect assembly; 11. First connector; 111. First threaded portion; 1111. External thread; 112. First mating structure; 1121. Locking protrusion; 1121'. First locking protrusion; 1121”. First locking groove; 11211. Top surface; 11212. First transition surface; 11212a. First sub-transition surface; 11212b. Second sub-transition surface; 11212c. Third sub-transition surface; 11212d. Fourth sub-transition surface; 11213. Side surface; 11213a. First side surface; 11213b. Second side surface; 11213c. Third side surface; 11213d. Fourth side surface; 11214. Inclined side surface; 1122. Positioning post; 2. Second quick-connect assembly; 21. Second connector; 21a. Sleeve; 21b. Limiting ring; 211. Second threaded part; 2111. Internal thread; 22. Pressure plate; 22a. Pressure plate; 22a1. Rotation clearance; 22a2. Second transition surface; 22a21. First-stage transition surface; 22a22. Second-stage transition surface; 22a23. Third-stage transition surface; 22b. Mounting part; 22c. Support plate; 221. Second mating structure; 2211. Slot; 2211'. Second slot protrusion; 2211”. Second slot; 2212. Positioning hole; 22111. Inner wall surface; 22111a. First sub-inner wall; 22111b. Second sub-inner wall; 22111c. Third sub-inner wall; 22112. Inclined inner wall; 200. First item to be connected; 300, Second component to be connected; 301, Mounting slot; L1, First Axis; X, the direction of the first axis. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0021] This application provides a connecting device 100; please refer to [link / reference]. Figures 1 to 6The connecting device 100 includes a first quick-connect assembly 1 and a second quick-connect assembly 2. The first quick-connect assembly 1 includes a first connector 11, which has a first threaded portion 111 and a first mating structure 112. The first connector 11 is used to install on a first member to be connected 200 to fix the first connector 11 and the first member to be connected 200. The second quick-connect assembly 2 includes a second connector 21 and a pressure plate 22. The pressure plate 22 is used to fix the second member to be connected 300. The second connector 21 is rotatably installed between the pressure plate 22 and the second member to be connected 300 around a first axis L1, meaning the second connector 21 can rotate relative to the pressure plate 22 around the first axis L1. The second connector 21 has a second threaded portion 211 with the first axis L1 as its central axis. The pressure plate 22 has a second mating structure 221. The second threaded portion 211 is used to screw into the first threaded portion 111 to connect the first connector 200 and the second connector 300. The second quick-connect assembly 2 and the first quick-connect assembly 1 are configured such that when the second mating structure 221 and the first mating structure 112 are aligned along the direction surrounding the first axis L1, and the second threaded portion 211 and the first threaded portion 111 are in the initial installation position where they can be screwed together, rotating the second connector 21 around a preset direction can gradually screw the second threaded portion 211 into the first threaded portion 111, and at the same time, gradually connect the second mating structure 221 into the first mating structure 112. That is, while the depth of the screwing between the second threaded portion 211 and the first threaded portion 111 gradually increases, the depth of the connection between the first mating structure 112 and the second mating structure 221 also gradually increases.Through the above structure, when the connecting device 100 is applied to the first and second connecting parts 200 and 300 that need to be connected, the second mating structure 221 and the first mating structure 112 will initially align. As the first and second connecting parts 200 and 300 go through the following stages: initial screwing – deepening screwing – complete screwing, the corresponding first mating structure 112 and the second mating structure 221 simultaneously go through the following stages: initial mating – deepening mating depth – complete mating. When the second threaded part 211 and the first threaded part 111 are in the initial screwing state, the contact area between the second threaded part 211 and the first threaded part 111 is small, and the friction between them is small, which can be offset by the user's hand support. The pressure plate 22 and the first connecting part 11 will not rotate relative to each other. The first mating structure 112 and the second mating structure 221 only achieve initial mating. 2. The second docking structure 221 does not create a limiting force around the first axis L1. As the screwing depth of the second threaded part 211 and the first threaded part 111 increases, the contact area between the second threaded part 211 and the first threaded part 111 increases, and the friction between them increases. At this time, the friction force can no longer guarantee that the pressure plate 22 and the first connecting member 11 will not rotate relative to each other by relying on external hand support. Simultaneously, the docking depth of the first docking structure 112 and the second docking structure 221 increases, and the first docking structure 112 and the second docking structure 221 create a limiting force around the first axis, thereby ensuring that the pressure plate 22 and the first connecting member 11 will not rotate relative to each other. As the screwing depth of the second threaded part 211 and the first threaded part 111 continues to increase until they are completely screwed together, the docking depth of the first docking structure 112 and the second docking structure 221 gradually increases synchronously until they reach a completely docked state. In this process, the user only needs to support the first connector 200 and / or the second connector 300 with their hands or external instruments and rotate the second connector 21. Compared with the prior art, which requires the first connector 200 and / or the second connector 300 to rotate together when connecting the first connector 200 and the second connector 300, the operation of this application is more convenient, improving the ease of disassembling and assembling the first connector 200 and the second connector 300 and enhancing the user experience.

[0022] It should be noted that the aforementioned initial installation position refers to the position of the second threaded part 211 and the first threaded part 111 at any time between the beginning of the threaded connection and the completion of the threaded connection, and is not limited to the position when the second threaded part 211 and the first threaded part 111 begin the threaded connection.

[0023] It should be noted that the preset direction mentioned above is determined by the thread direction of the first threaded portion 211 and the second threaded portion 111. If the thread direction of the first threaded portion 211 and the second threaded portion 111 is clockwise, the preset direction is clockwise; if the thread direction of the first threaded portion 211 and the second threaded portion 111 is counterclockwise, the preset direction is counterclockwise.

[0024] The first component to be connected 200 and the second component to be connected 300 mentioned above refer to any parts that need to be assembled, including but not limited to multiple joints of the robot, support structures that need to be connected and extended, etc.

[0025] When the first threaded portion 111 and the second threaded portion 211 are initially screwed together, the first mating structure 112 and the second mating structure 221 are not yet fully mated. To prevent relative rotation between the pressure plate 22 and the first connecting member 11 during the screwing process of the first quick-connect assembly 1 and the second quick-connect assembly 2, a structure of positioning pin 1122 and positioning hole 2212 can be used. For details, please refer to... Figure 1 and Figure 5 When the first docking structure 112 and the second docking structure 221 are connected, the positioning pin 1122 is inserted into the positioning hole 2212, and then the first threaded part 111 and the second threaded part 211 begin to be screwed together. The insertion and engagement of the positioning pin 1122 and the positioning hole 2212 achieves the initial positioning of the pressure plate 22 and the first connecting member 11, preventing the pressure plate 22 and the first connecting member 11 from rotating relative to each other.

[0026] Understandably, during the initial screw connection of the first quick-connect assembly 1 and the second quick-connect assembly 2, the positioning pins 1122 and positioning holes 2212 can be used for limiting the connection without relying on the weight of the first pressure plate 22, the weight of the second connector 21, or the weight of the second connector 300 after it is fixedly connected to the pressure plate 22. Under the premise that the direction of gravity coincides with the direction of the first axis L1 during the installation of the first quick-connect assembly 1 and the second quick-connect assembly 2, the first connector 11 and the pressure plate 22 can abut against each other without relative rotation, thus ensuring a quick connection between the first quick-connect assembly 1 and the second quick-connect assembly 2. Alternatively, the user can support the connection with their hands or use tools to clamp it, ensuring that the first connector 11 and the pressure plate 22 abut against each other without relative rotation, thereby achieving a quick connection between the first quick-connect assembly 1 and the second quick-connect assembly 2.

[0027] In some embodiments, please refer to Figure 1The second connecting member 21 includes a sleeve 21a and a limiting ring 21b. The limiting ring 21b is fixed to one end of the sleeve 21a. The sleeve 21a surrounds the pressure plate 22. The pressure plate 22 includes a pressure plate 22a and a mounting part 22b. The pressure plate 22a and the mounting part 22b are integrally formed. The mounting part 22b is fixed to the end face of the pressure plate 22a along its own thickness direction, that is, the mounting part 22b is fixed to the surface of the pressure plate 22a facing the second member to be connected 300. In the direction perpendicular to the first axis L1, the cross-sectional area of ​​the mounting part 22b is smaller than the cross-sectional area of ​​the pressure plate 22a. The mounting part 22b is used to pass through the opening enclosed by the limiting ring 21b and then fix the second member to be connected 300. It should be noted that the diameter of the opening enclosed by the limiting ring 21b is larger than the cross-sectional area of ​​the mounting part 22b and smaller than the cross-sectional area of ​​the pressure plate 22a, so that the limiting ring 21b can be restricted between the pressure plate 22a and the second member to be connected. With the above structure, the pressure plate 22 can limit the second connector 21 between the pressure plate 22a and the limiting ring 21b by the diameter difference between the pressure plate 22a and the second connector 300, so that the second quick-connect assembly 2 and the first quick-connect assembly 1 can be disassembled and connected by rotating the second connector 21.

[0028] It is understandable that the first threaded portion 111 can be an external thread 1111, and the corresponding second threaded portion 211 can be an internal thread 2111; or the second threaded portion 211 can also be an internal thread 2111, and the corresponding second threaded portion 211 can also be an external thread 1111.

[0029] For example, in some embodiments, the first threaded portion 111 is an external thread 1111 provided around the outer side of the first connector 11, and the second connector 21 is provided with an annular portion (i.e., the sleeve 21a mentioned above) surrounding the pressure plate 22. The second threaded portion 211 is an internal thread 2111 provided on the inner side wall of the annular portion. At this time, by rotating the annular portion to drive the internal thread 2111 to rotate, the internal thread 2111 and the external thread 1111 are screwed together, thereby realizing the connection between the first quick-connect assembly 1 and the second quick-connect assembly 2.

[0030] It should be noted that the aforementioned annular portion and the aforementioned sleeve 21a both refer to the same part of the same component, and the different descriptions are only used for distinction.

[0031] Alternatively, in some embodiments, the first connector 11 may also have an annular portion (not shown) for surrounding the second connector 21. The first mating structure 112 is located within the annular portion, that is, the first mating structure 112 is located within the area enclosed by the annular portion. The first threaded portion 111 is an internal thread 2111 provided on the inner sidewall of the annular portion, and the second threaded portion 211 is an external thread 1111 surrounding the outer sidewall of the second connector 21. In this case, by rotating the second connector 21, the external thread 1111 is driven to rotate and engage with the internal thread 2111, thereby realizing the connection between the quick-connect assembly and the second quick-connect assembly 2.

[0032] Understandably, regardless of whether the first threaded portion 111 is an external thread 1111 and the second threaded portion 211 is an internal thread 2111; or whether the second threaded portion 211 is an internal thread 2111 and the corresponding second threaded portion 211 is an external thread 1111, during installation, the user only needs to rotate the second connector 21 to gradually engage the internal thread 2111 with the external thread 1111 to complete the connection of the first quick-connect assembly 1 and the second quick-connect assembly 2, thereby connecting the first part to be connected 200 and the second part to be connected 300. Similarly, during disassembly, the user only needs to rotate the second connector 21 to rotate the internal thread 2111 to gradually disengage from the external thread 1111 to complete the separation of the first quick-connect assembly 1 and the second quick-connect assembly 2, thereby separating the first part to be connected 200 and the second part to be connected 300.

[0033] In some embodiments, the second connector 21 is provided with an operating part (not shown in the figure) on its exterior. The operating part is used for the user's hand or tool to hold and facilitate the user to rotate the second connector 21. It is understood that the operating part includes, but is not limited to, a clamping plane, several anti-slip grooves, clamping protrusions, etc.

[0034] For further explanation, please refer to [link / reference]. Figure 2 In order to facilitate the rotation of the second connector 21 between the pressure plate 22a and the second connector 300, a rotation gap 22a1 needs to be left between the pressure plate 22a and the second connector 300. Furthermore, the existence of the rotation gap 22a1 is determined by the height of the mounting part 22b protruding from the second connector 300.

[0035] For example, in some embodiments, please refer to Figure 2The second connecting member 300 is provided with a mounting groove 301. The mounting groove 301 is used for the mounting part 22b to be inserted and fixed in the mounting groove 301. Along the first axis L1, the height of the mounting part 22b is greater than the depth of the mounting groove 301. The difference between the height of the mounting part 22b and the depth of the mounting groove 301 is greater than the thickness of the limiting ring 21b along the first axis L1 to ensure that the first connecting member 11 can rotate within the rotation gap 22a1. For example, the difference between the height of the mounting portion 22b and the depth of the mounting groove 301 is greater than or equal to the height difference between the first threaded portion 111 and the second threaded portion 211 before and after screwing. This allows the first connector 200 and the second connector 300 to be connected using the connecting device 100 of this application. When the first connector 11 is fixedly connected to the first connector 200 and the mounting portion 22b of the pressure plate 22 is fixedly connected in the mounting groove 301, the second connector 21 can be rotated simply by aligning it with the first connector 11 (i.e., the central axis of the second connector 21, the central axis of the mounting portion 22b, and the central axis of the first connector 11 are collinear), further improving the user experience. Alternatively, the difference between the height of the mounting portion 22b and the depth of the mounting groove 301 is greater than the thickness of the limiting ring 21b and less than the height difference between the first threaded portion 111 and the second threaded portion 211. The height difference between the second threaded portion 211 before and after screwing in allows the second connector 21 to rotate within the aforementioned rotation gap 22a1. As the screwing depth of the first threaded portion 111 and the second threaded portion 211 increases, the user needs to move the first connector 200 or the second connector 300 along the first axis L1 during the screwing process of the first threaded portion 111 and the second threaded portion 211 to meet the required movement distance of the first connector 200 and the second connector 300 as the screwing depth of the first threaded portion 111 and the second threaded portion 211 gradually increases. The distance that the first connector 200 or the second connector 300 moves along the first axis L1 is selected based on the difference between the actual height of the rotation gap 22a1 and the required screwing depth of the first threaded portion 111 and the second threaded portion 211. Examples will not be given here.

[0036] It is understandable that the combination structures that can be used for the first docking structure 112 and the second docking structure 221 include, but are not limited to: the protrusion 1121 and the slot 2211, the snap-fit ​​connection structure, the magnetic connection structure, etc.

[0037] In some embodiments, one of the first docking structure 112 and the second docking structure 221 is a latching protrusion 1121, and the other of the first docking structure 112 and the second docking structure 221 is a latching groove 2211. The first docking structure 112 and the second docking structure 221 are engaged through the interlocking of the latching protrusion 1121 and the latching groove 2211. Alternatively, the first docking structure 112 includes a first latching protrusion 1121' and a first latching groove 1121", and the second docking structure 221 includes a second latching protrusion 2211' and a second latching groove 2211". The first docking structure 112 and the second docking structure 221 are engaged through the interlocking of the first latching protrusion 1121' and the second latching groove 2211", and the interlocking of the second latching protrusion 2211' and the first latching groove 1121".

[0038] For example, in some embodiments, please refer to Figure 1 , Figure 3 and Figure 4 The first mating structure 112 is a latching protrusion 1121 provided on the first connecting member 11; the second mating structure 221 is a latching groove 2211 provided on the other surface of the pressure plate 22a opposite to the mounting portion 22b. When the screwing depth of the first threaded portion 111 and the second threaded portion 211 increases, and the pressure plate 22 and the first connecting member 11 tend to rotate relative to each other, the latching protrusion 1121 can engage with the latching groove 2211 to restrict the rotation of the first member to be connected 200 relative to the second member to be connected 300. That is, through the structure of the latching protrusion 1121 engaging with the latching groove 2211, when the first threaded portion 111 and the second threaded portion 211 are screwed together, as the screwing depth increases, the latching protrusion 1121 will gradually be received into the latching groove 2211 to achieve the limiting of the first member to be connected 200 and the second member to be connected 300.

[0039] It is understandable that the number of card protrusions 1121 and card slots 2211 are both positive integers greater than or equal to one, and the number of card protrusions 1121 and the number of card slots 2211 are the same, and the structures of card protrusions 1121 and card slots 2211 are compatible.

[0040] For example, in this application, please refer to Figure 1 There are multiple slots 2211 and protrusions 1121. Multiple slots 2211 are arranged at intervals along the circumference of the pressure plate 22a, and one protrusion 1121 is received in one slot 2211. The cooperation between multiple protrusions 1121 and slots 2211 further enhances the ability to restrict the relative rotation of the first connecting member 200 and the second connecting member 300.

[0041] For example, in some other embodiments, please refer to Figure 1 , Figure 2 and Figure 5The first docking structure 112 consists of a first latching protrusion 1121' and a first latching groove 1121" alternately arranged around the first axis L1 on the surface of the first connector 11 facing the second connector 21; the corresponding second docking structure 221 consists of a second latching protrusion 2211' and a second latching groove 2211" alternately arranged around the first axis L1 on the other surface of the pressure plate 22a opposite to the mounting part 22b. Through the convex-concave engagement of the first latching protrusion 1121' and the second latching groove 2211", the convex-concave engagement of the second latching protrusion 2211' and the first latching groove 1121" together realizes the limiting of the pressure plate 22 and the first connector 11 around the first axis L1.

[0042] It is understandable that the number of the first card protrusion 1121' and the second card protrusion 2211', the number of the first card slot 1121", and the number of the second card slot 2211" are all positive integers greater than or equal to one. Furthermore, the number of the second card slot 2211" is equal to the number of the first card protrusion 1121', and the structures of the first card protrusion 1121' and the second card slot 2211" are compatible.

[0043] It should be noted that when the number of first card protrusions 1121' and first card slots 1121" is greater than one, the first card protrusions 1121' and first card slots 1121" are spaced apart around the first axis L1, and correspondingly, the second card protrusions 2211' and second card slots 2211" are also spaced apart around the first axis L1. Furthermore, the spacing between the first card protrusions 1121' and first card slots 1121" can be equal (i.e., the first card protrusions 1121' and first card slots 1121" are equidistant around the first axis L1), and correspondingly, the spacing between the second card protrusions 2211' and second card slots 2211" can be equal. The first card protrusion 1121' and the second card slot 2211" are equidistant from each other around the second axis. Of course, the distance between the first card protrusion 1121' and the first card slot 1121" can also be unequal (i.e., between two adjacent first card protrusions 1121', the first card slot 1121" is set closer to one of the first card protrusions 1121'). Correspondingly, the distance between the second card protrusion 2211' and the second card slot 2211" is also unequal (i.e., between two adjacent second card protrusions 2211', the second card slot 2211" is set closer to one of the second card protrusions 2211'). The specific distances will not be explained in detail here.

[0044] In some embodiments, the first mating structure 112 may further include a third latching protrusion (referring to a latching protrusion structure that is clearly different from the first latching protrusion 1121' and the second latching protrusion 2211') and a third latching groove. Correspondingly, the second mating structure 221 may further include a fourth latching protrusion (referring to a latching protrusion structure that is clearly different from the first latching protrusion 1121', the second latching protrusion 2211' and the third latching protrusion) and a fourth latching groove. The third latching protrusion and the fourth latching groove are adapted to each other. Theoretically, as long as the circumference of the end face of the first connector 11 is sufficient and the circumference of the end face of the second pressure plate 22 is sufficient, the first... The docking structure 112 may also include several different types of protrusions and slots. Different protrusions and slots can be combined to form several combinations. Similarly, the second docking structure 221 also includes the same number of slots and protrusions that are compatible with the first docking structure 112. Different types of protrusions and slots can be combined to form several combinations. Furthermore, the protrusions of the first docking structure 112 and the slots of the second docking structure 221 are in a convex-concave fit, and the slots of the first docking structure 112 and the protrusions of the second docking structure 221 are in a convex-concave fit, together achieving the limiting around the first axis L1.

[0045] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 3 The protrusion 1121 includes a top surface 11211 and a side surface 11213 adjacent to the top surface 11211. The top surface 11211 is the surface on the protrusion 1121 that is opposite to the slot 2211 along the first axis L1. The side surface 11213 is used to abut against the inner wall of the slot 2211 after the protrusion 1121 and the slot 2211 are engaged. The protrusion 1121 has a first transition surface 11212 between the top surface 11211 and the side surface 11213. The first transition surface 11212 is used to guide the protrusion 1121 to be inserted into the slot 2211. Specifically, during the screwing process of the first threaded portion 111 and the second threaded portion 211, as the screwing depth increases, the retaining protrusion 1121 will gradually be received in the retaining groove 2211. The first transition surface 11212 can guide the movement direction of the retaining protrusion 1121 during the process of the retaining protrusion 1121 being received in the retaining groove 2211, so that the retaining protrusion 1121 can be smoothly received in the retaining groove 2211, and also improve the smoothness of the retaining protrusion 1121 being received in the retaining groove 2211.

[0046] It should be noted that the top surface 11211 mentioned above represents all the top surfaces 11211 that are closest to the bottom of the slot 2211 in the outer surface of the protrusion 1121. The side surface 11213 mentioned above refers to all the side surfaces 11213 that are adjacent to the protrusion 1121, that is, all the side surfaces 11213 that constitute the outer surface of the protrusion 1121. Furthermore, the first transition surface 11212 also refers to all the first transition surfaces 11212 formed at the connection positions of all the side surfaces and the top surface 11211.

[0047] Understandably, the number of top surfaces 11211 and side surfaces of the protrusion 1121 is determined by the actual structure of the slot 2211. For example, if the protrusion 1121 is frustum-shaped, then there is one top surface 11211 and at least three side surfaces 11213. If the protrusion 1121 is cubic, then there is one top surface 11211 and four side surfaces 11213. If the protrusion 1121 is irregularly shaped, then the number of top surfaces 11211 and side surfaces 11213 is determined by the actual irregular surface distribution. The specific shape selection and the number of top surfaces 11211 and side surfaces 11213 will not be illustrated here.

[0048] For example, in this application, please refer to Figure 3 The protrusion 1121 is an arc-shaped cube with one top surface 11211 and four side surfaces 11213. Two of the side surfaces 11213 are the first side surface 11213a and the second side surface 11213b, which are radially opposite each other. The other two side surfaces 11213 are the third side surface 11213c and the fourth side surface 11213d, which are located around the first axis L1 (along the circumference of the first connector 11). The first side surface 11213a, the third side surface 11213c, the second side surface 11213b, and the fourth side surface 11213d are connected end to end in sequence. The fourth side surface 11213d and the top surface 11211 together form the outer surface of the protrusion 1121. Furthermore, the first transition surface 11212 is provided at the connection positions between the top surface 11211 and the first side surface 11213a, the top surface 11211 and the second side surface 11213b, the top surface 11211 and the third side surface 11213c, and the top surface 11211 and the fourth side surface 11213d. For easy distinction, they are respectively defined as the first sub-transition surface 11212a, the second sub-transition surface 11212b, the third sub-transition surface 11212c, and the fourth sub-transition surface 11212d.

[0049] And / or, the slot 2211 includes an inner wall for abutting against the side surface 11213 of the protrusion 1121 after engagement with the protrusion 1121. The inner wall has a second transition surface 22a2 at one end near the protrusion 1121. Specifically, during the screwing process of the first threaded portion 111 and the second threaded portion 211, as the screwing depth increases, the slot 2211 gradually accommodates the protrusion 1121. The first transition surface 11212 can guide the movement direction of the protrusion 1121 during its accommodation in the slot 2211, so that the protrusion 1121 can be smoothly accommodated in the slot 2211, and also improves the smoothness of the protrusion 1121's accommodation in the slot 2211.

[0050] It should be noted that the inner wall of the aforementioned slot 2211 refers to all the inner wall surfaces 22111 that enclose and form the slot 2211. One end of all the inner wall surfaces 22111 is connected to the bottom surface of the slot 2211, and the other end of all the inner wall surfaces 22111 is connected to the wall surface around the opening of the slot 2211. Furthermore, the aforementioned second transition surface 22a2 refers to all the secondary transition surfaces provided at the connection positions of all the inner wall surfaces 22111 and the wall surface around the opening of the slot 2211. For ease of distinction, they can be defined as the first-level transition surface 22a21, the second-level transition surface 22a22, etc. (the actual number of secondary transition surfaces is defined and ordered according to the actual shape of the slot 2211).

[0051] Understandably, the number of inner wall surfaces 22111 is determined by the shape of the slot 2211. For example, if the slot 2211 has a double-slot structure (i.e., one slot faces the first axis L1, and the other slot faces the protrusion 1121) and corresponds to the protrusion 1121 of the cube, then the number of inner wall surfaces 22111 of the slot 2211 is three. If the slot 2211 has a single-slot structure and corresponds to the protrusion 1121 of the cube, then the number of inner wall surfaces 22111 of the slot 2211 is four. Specific types and numbers of inner wall surfaces 22111 that can be used will not be listed here.

[0052] For example, in this application, please refer to Figure 4The slot 2211 is a structure with double slots corresponding to the arc-shaped cube protrusion 1121. The slot 2211 has three inner wall surfaces 22111, which are the first sub-inner wall 22111a, the second sub-inner wall 22111b, and the third sub-inner wall 22111c, respectively. The first sub-inner wall 22111a, the second sub-inner wall 22111b, and the third sub-inner wall 22111c are connected in sequence. Furthermore, a first-level transition surface 22a21 is provided at the connection position between the first sub-inner wall 22111a and the wall surface around the opening of the slot 2211; a second-level transition surface 22a22 is provided at the connection position between the second sub-inner wall 22111b and the wall surface around the opening of the slot 2211; and a third-level transition surface 22a23 is provided at the connection position between the first sub-inner wall 22111a and the wall surface around the opening of the slot 2211.

[0053] In some embodiments, the latching protrusion 1121 includes a top surface 11211, a side surface 11213, and a second side surface 11213b. The top surface 11211 is the surface on the latching protrusion 1121 that is opposite to the latching groove 2211 along the first axis L1 direction. The side surface 11213 (here referring to the aforementioned first side surface 11213a) and the second side surface 11213b are two sides of the latching protrusion 1121 along its own width direction, and the side surface 11213 is closer to the first threaded portion 111 or the second threaded portion 211 than the second side surface 11213b (i.e., when the first connector...). When the first mating structure 112 on 11 is a latching protrusion 1121, the side surface 11213 is closer to the sleeve 21a or the first threaded portion 111 provided on the annular portion compared to the second side surface 11213b; when the second mating structure 221 on the second connector 21 is a latching protrusion 1121, the side surface 11213 is closer to the second threaded portion 211 compared to the second side surface 11213b. The latching protrusion 1121 also has a clearance portion (i.e., representing the second sub-transition surface 11212b mentioned above) between the top surface 11211 and the side surface 11213.

[0054] In some embodiments, please refer to Figure 3 and Figure 4The latching protrusion 1121 includes an inclined side surface 11214 (representing the aforementioned second side surface 11213b), and the latching groove 2211 includes an inclined inner wall 22112 (representing the aforementioned second sub-inner wall 22111b). After the latching protrusion 1121 and the latching groove 2211 are engaged (or have a convex-concave fit), the inclined side surface 11214 and the inclined inner wall 22112 abut against each other, and the inclination angle of the inclined side surface 11214 relative to the first axis L1 is equal to the inclination angle of the inclined inner wall 22112 relative to the first axis L1. Through this structural design, during the connection process of the first quick-connect assembly 1 and the second quick-connect assembly 2, as the threading depth of the first threaded portion 111 and the second threaded portion 211 increases, the distance between the inclined side surface 11214 and the inclined inner wall 22112 gradually decreases, and the inclined side surface 11214 and the inclined inner wall 22112 can guide each other.

[0055] In some embodiments, please refer to Figure 5 and Figure 6One of the pressure plate 22 and the first connecting member 11 is provided with a positioning post 1122, and the other of the pressure plate 22 and the first connecting member 11 without the positioning post 1122 is provided with a positioning hole 2212. The positioning post 1122 and the positioning hole 2212 are used to ensure that the first mating structure 112 and the second mating structure 221 are aligned along the direction surrounding the first axis L1 when they are plugged into each other, and to ensure that the second threaded part 211 and the first threaded part 111 are in the initial installation position where they can be screwed into each other. Furthermore, along the first axis L1, the end face of the positioning post 1122 protrudes beyond the end face of the latching protrusion 1121 (or the end face of the positioning post 1122 protrudes beyond the end face of the first latching protrusion 1121', which can also be referred to as the positioning post 1122 being higher than the first latching protrusion 1121' along the first axis X), so that when the first quick-connect assembly 1 and the second quick-connect assembly 2 are initially connected, the first threaded portion 111 and the second threaded portion 211 achieve initial screwing, and the positioning post 1122 simultaneously achieves initial insertion with the positioning hole 2212, while the latching protrusion 1121 and the slot 2211 have not yet achieved insertion. When the user rotates the second connecting member 21 to screw the threaded portion of the second connecting member 21 with the threaded portion of the first connecting member 11, the contact area of ​​the first threaded portion 111 and the second threaded portion 211 is small, and the friction is small, relying solely on the positioning post 1122 and the positioning hole 2212. The insertion and engagement of the pressure plate 22 and the first connector 11 can achieve the limiting of the position around the first axis L1. As the threading depth of the first thread 111 and the second thread 211 increases, the insertion depth of the positioning post 1122 and the positioning hole 2212 also increases, and the locking protrusion 1121 will gradually be received in the locking groove 2211. At this time, the contact area of ​​the first thread 111 and the second thread 211 increases, and the friction between the first thread 111 and the second thread 211 will also increase accordingly. The insertion and engagement of the positioning post 1122 and the positioning hole 2212 can achieve the limiting of the position around the first axis L1, and the insertion and engagement of the locking protrusion 1121 and the locking groove 2211 can also achieve the limiting of the position around the first axis L1. This ensures that the pressure plate 22 and the first connector 11 will not rotate relative to each other during the connection of the first quick-connect assembly 1 and the second quick-connect assembly 2.

[0056] Understandably, the number of positioning holes 2212 and positioning pins 1122 are both positive integers greater than or equal to one, and the number of positioning pins 1122 and positioning holes 2212 can be equal, for example, the number of positioning pins 1122 and the number of positioning holes 2212 are both four, with one positioning pin 1122 inserted into one positioning hole 2212; the number of positioning pins 1122 and positioning holes 2212 can be unequal, for example, the number of positioning pins 1122 is three and the number of positioning holes 2212 is four.

[0057] Furthermore, when the first docking structure 112 of the first quick-connect component 1 consists of multiple spaced protrusions 1121 and the first connector 11 of the first quick-connect component 1 is provided with multiple spaced positioning posts 1122, a positioning post 1122 is provided between two adjacent protrusions 1121; correspondingly, the second docking structure 221 of the second quick-connect component 2 consists of multiple spaced slots 2211 and the pressure plate 22 of the second quick-connect component 2 is provided with multiple spaced positioning holes 2212, and a positioning hole 2212 is provided between two adjacent slots 2211. When the first docking structure 112 of the first quick-connect component 1 is a plurality of spaced protrusions 1121 and the first connector 11 of the first quick-connect component 1 is provided with a plurality of spaced positioning holes 2212, a positioning hole 2212 is provided between two adjacent protrusions 1121; correspondingly, the second docking structure 221 of the second quick-connect component 2 is a plurality of spaced slots 2211 and the pressure plate 22 of the second quick-connect component 2 is provided with a plurality of spaced positioning posts 1122, and a positioning post 1122 is provided between two adjacent slots 2211. When the first docking structure 112 of the first quick-connect component 1 is a plurality of spaced slots 2211 and the first connector 11 of the first quick-connect component 1 is provided with a plurality of spaced positioning posts 1122, a positioning post 1122 is provided between two adjacent slots 2211; correspondingly, the second docking structure 221 of the second quick-connect component 2 is a plurality of spaced protrusions 1121 and the pressure plate 22 of the second quick-connect component 2 is provided with a plurality of spaced positioning holes 2212, and a positioning hole 2212 is provided between two adjacent protrusions 1121.

[0058] When the first docking structure 112 of the first quick-connect component 1 consists of multiple first latching protrusions 1121' and multiple first latching slots 1121", and the first connector 11 of the first quick-connect component 1 is provided with multiple spaced positioning posts 1122, one positioning post 1122 is located in one first latching slot 1121". Correspondingly, when the second docking structure 221 of the second quick-connect component 2 consists of multiple second latching protrusions 2211' and multiple second latching slots 2211", and the pressure plate 22 of the second quick-connect component 2 is provided with positioning holes 2212, one positioning hole 2212 is located in one second latching protrusion 2211'. When the first docking structure 112 of the first quick-connect component 1 consists of multiple first latching protrusions 1121' and multiple first latching slots 1121", and the first connector 11 of the first quick-connect component 1 is provided with multiple spaced positioning holes 2212, one positioning hole 2212 is located in one first latching slot 1121". Correspondingly, when the second docking structure 221 of the second quick-connect component 2 consists of multiple second latching protrusions 2211' and multiple second latching slots 2211", and the pressure plate 22 of the second quick-connect component 2 is provided with positioning posts 1122, one positioning post 1122 is located in one second latching protrusion 2211'.

[0059] For example, in this application, please refer to Figure 5 and Figure 6 The first connector 11 has four first latching protrusions 1121' and four first latching slots 1121"; the four first latching protrusions 1121' and the four first latching slots 1121" are equidistantly spaced around the first axis L1. The second connector 21 has four second latching protrusions 2211' and four second latching slots 2211"; the four second latching protrusions 2211' and the four second latching slots 2211" are equidistantly spaced around the first axis L1. The second connector 21 has three positioning holes 2212 and three positioning posts 1122; the three positioning posts 1122 are located within three adjacent first latching slots 1121" and the three positioning holes 2212 are located within adjacent first latching slots 1121". Three second protrusions 2211' are provided. This design ensures that when the first quick-connect assembly 1 and the second quick-connect assembly 2 are connected, the three positioning pins 1122 and the three positioning holes 2212 must be correspondingly inserted before the first threaded portion 111 and the second threaded portion 211 can be screwed together. The structure of the three positioning pins 1122 and the three positioning holes 2212 constitutes a foolproof structure, preventing misalignment of the connection angles of the first quick-connect assembly 1 and the second quick-connect assembly 2, which would cause the connection orientation of the first connector 200 and the second connector 300 to fail to meet actual requirements. This ensures that the mating angle of the first connector 200 and the second connector 300 is the required preset angle, preventing unexpected angular rotation of the first connector 200 and the second connector 300 during installation.

[0060] In some embodiments, please refer to Figure 5 The pressure plate 22 also includes a support plate 22c. The pressure plate 22a, mounting part 22b, and support plate 22c are integrally formed. The support plate 22c is disposed on the surface of the pressure plate 22a facing the mounting part 22b. The support plate 22c is used to abut against the limiting ring 21b and improve the structural strength of the pressure plate 22a, reducing wear on the pressure plate 22a during the rotation of the second connecting member 21. Furthermore, along the direction perpendicular to the first axis L1, the cross-sectional area of ​​the support plate 22c is smaller than the diameter enclosed by the second threaded part 211 and larger than the diameter of the ring enclosed by the limiting ring 21b, so that when the second threaded part 211 is screwed into the first threaded part 111 during the rotation of the second connecting member 21, the outer wall of the support plate 22c surrounding the first axis L1 will not affect the rotation of the second connecting member 21.

[0061] In some embodiments, the first quick-connect assembly 1 further includes a first electrical connector (not shown), which is fixed to the first connector 11. The second quick-connect assembly 2 further includes a second electrical connector (not shown), which is disposed on the pressure plate 22 or the second connector 21. The second electrical connector and the first electrical connector are used to achieve electrical connection when the second mating structure 221 and the first mating structure 112 are engaged.

[0062] It should be noted that the optional structures include, but are not limited to, conductive protrusions and conductive contacts, elastic conductive terminals and conductive contacts, conductive probes and conductive slots, etc. The different structures selected for the first and second electrical connectors result in different connection states between the first and second electrical connectors during the process from the initial screwing to the complete screwing.

[0063] For example, when the first electrical connector and the second electrical connector are preferably conductive protrusions and conductive contacts, when the first threaded portion 111 and the second threaded portion 211 begin to be screwed together, but the first mating structure 112 and the second mating structure 221 have not yet begun to mate, the first electrical connector and the second electrical connector are only aligned. As the screwing depth of the first threaded portion 111 and the second threaded portion 211 increases, and the mating depth of the first mating structure 112 and the second mating structure 221 increases, the distance between the first electrical connector and the second electrical connector gradually decreases. When the first threaded portion 111 and the second threaded portion 211 are fully screwed into place, and the first mating structure 112 and the second mating structure 221 are fully mated in place, the first electrical connector and the second electrical connector achieve electrical connection.

[0064] For example, when the first electrical connector and the second electrical connector are preferably an elastic conductive terminal and a conductive contact, when the first threaded portion 111 and the second threaded portion 211 begin to be screwed together, and the first mating structure 112 and the second mating structure 221 have not yet begun to be mated, the elastic conductive terminal achieves an electrical connection with the conductive contact under its own elastic force. As the screwing depth of the first threaded portion 111 and the second threaded portion 211 increases, and the mating depth of the first mating structure 112 and the second mating structure 221 increases, the structure of the elastic conductive terminal that can produce elastic deformation is compressed, the elastic force increases, and the elastic conductive terminal maintains an electrical connection with the conductive contact. When the first threaded portion 111 and the second threaded portion 211 are fully screwed in place, and the first mating structure 112 and the second mating structure 221 are fully mated in place, the elastic force of the elastic conductive terminal reaches its maximum, and the elastic conductive terminal maintains an electrical connection with the conductive contact.

[0065] For example, when the first electrical connector and the second electrical connector are preferably a conductive probe and a conductive slot, when the first threaded portion 111 and the second threaded portion 211 begin to be screwed together, but the first mating structure 112 and the second mating structure 221 have not yet begun to mate, the conductive probe and the conductive slot are only aligned or the conductive probe is only partially inserted into the conductive slot, and the conductive probe and the conductive slot are not electrically connected. As the screwing depth of the first threaded portion 111 and the second threaded portion 211 increases, the mating depth of the first mating structure 112 and the second mating structure 221 increases, and the depth of the conductive probe inserted into the conductive slot increases, the conductive probe and the conductive slot achieve a preliminary electrical connection. When the first threaded portion 111 and the second threaded portion 211 are fully screwed into place, and the first mating structure 112 and the second mating structure 221 are fully mated in place, the depth of the conductive probe inserted into the conductive slot reaches its maximum, and the conductive probe and the conductive slot maintain an electrically connected state.

[0066] This application also provides a robot embodiment, including a first joint, a second joint, and the above-described connecting device 100, wherein the first joint and the second joint are connected by the connecting device 100.

[0067] This application provides a connecting device 100 and a robot. The connecting device 100 includes a first quick-connect assembly 1 and a second quick-connect assembly 2. The first quick-connect assembly 1 includes a first connector 11, which is provided with a first threaded portion 111 and a first mating structure 112. The first connector 11 is used to fixably connect a first component 200 to be connected. The second quick-connect assembly 2 includes a second connector 21 and a pressure plate 22. The pressure plate 22 is used to fixably connect a second component 300 to be connected. The second connector 21 is rotatably mounted between the pressure plate 22 and the second component 300 to be connected around a first axis L1. The second connector 21 is provided with... The second threaded portion 211 with the first axis L1 as the central axis, and the pressure plate 22 are provided with a second mating structure 221; the second quick-connect assembly 2 and the first quick-connect assembly 1 are configured such that when the second mating structure 221 and the first mating structure 112 are aligned along the direction surrounding the first axis L1, and the second threaded portion 211 and the first threaded portion 111 are in the initial installation position where they can be screwed together, the second connector 21 can be rotated around a preset direction so that the second threaded portion 211 and the first threaded portion 111 can be screwed together gradually, and at the same time, the second mating structure 221 and the first mating structure 112 can be gradually mated together. The connecting device 100 of this application allows the user to connect the first connecting member 200 and the second connecting member 300 by simply rotating the second connecting member 21 to gradually engage the first threaded portion 111 and the second threaded portion 211. This achieves a detachable connection between the first connecting member 200 and the second connecting member 300. Compared to the connection method in the prior art that requires rotating the first connecting member 200 and / or the second connecting member 300, the connecting device 100 of this application is simpler to operate during assembly and disassembly, thus improving the user experience.

[0068] It should be noted that while the preferred embodiments of this utility model are provided in the specification and accompanying drawings, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this utility model; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this utility model specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A connecting device, characterized in that, include: A first quick-connect assembly includes a first connector, the first connector having a first threaded portion and a first mating structure, the first connector being used to fix a first component to be connected; The second quick-connect assembly includes a second connector and a pressure plate. The pressure plate is used to fix the second component to be connected. The second connector is rotatably installed between the pressure plate and the second component to be connected around a first axis. The second connector is provided with a second threaded portion with the first axis as the central axis. The pressure plate is provided with a second mating structure. The second quick-connect component and the first quick-connect component are configured such that when the second docking structure and the first docking structure are aligned along the direction surrounding the first axis, and the second threaded portion and the first threaded portion are in an initial installation position where they can be screwed together, rotating the second connector around a preset direction can cause the second threaded portion and the first threaded portion to gradually screw together, and at the same time cause the second docking structure and the first docking structure to gradually dock.

2. The connecting device according to claim 1, characterized in that, The second connecting member includes a sleeve and a limiting ring, the limiting ring being fixed to one end of the sleeve, and the sleeve being arranged around the pressure plate; The pressure plate includes a pressure plate and a mounting part. The mounting part is fixed to the end face of the pressure plate along its own thickness direction. In a direction perpendicular to the first axis, the cross-sectional area of ​​the mounting part is smaller than the cross-sectional area of ​​the pressure plate. The mounting part is used to pass through the limiting ring and fix the second component to be connected. The gap between the pressure plate and the second component to be connected is greater than the height of the limiting ring. The limiting ring is installed between the pressure plate and the second component to be connected so that the limiting ring can rotate around the first axis.

3. The connecting device according to claim 1, characterized in that, The first threaded portion is an external thread provided around the outer side of the first connector, and the second connector is provided with an annular portion around the pressure plate, and the second threaded portion is an internal thread provided on the inner side wall of the annular portion; Alternatively, the first connector may also have an annular portion for surrounding the second connector, the first mating structure being located within the annular portion, the first threaded portion being an internal thread disposed on the inner sidewall of the annular portion, and the second threaded portion being an external thread disposed around the outer sidewall of the second connector.

4. The connecting device according to claim 1, characterized in that, One of the first docking structure and the second docking structure is a snap-fit ​​protrusion, and the other of the first docking structure and the second docking structure is a snap-fit ​​groove. The first docking structure and the second docking structure are engaged by the snap-fit ​​protrusion and the snap-fit ​​groove. Alternatively, the first docking structure includes a first latching protrusion and a first latching groove, and the second docking structure includes a second latching protrusion and a second latching groove. The first docking structure and the second docking structure are engaged through the interlocking of the first latching protrusion and the second latching groove, and the interlocking of the second latching protrusion and the first latching groove.

5. The connecting device according to claim 4, characterized in that, The card protrusion includes a top surface and a side surface adjacent to the top surface. The top surface is the surface on the card protrusion that is opposite to the card groove along the first axis direction. The side surface is used to abut against the inner wall of the card groove after the card protrusion and the card groove are engaged. The card protrusion has a first transition surface between the top surface and the side surface. And / or, the slot includes an inner wall for abutting against the side surface of the protrusion after engagement, the inner wall having a second transition surface near the protrusion.

6. The connecting device according to claim 4, characterized in that, The card protrusion includes a top surface, a side surface, and a second side surface. The top surface is the surface of the card protrusion that is opposite to the card groove along the first axis direction. The side surface and the second side surface are two sides of the card protrusion along its own width direction. The side surface is closer to the first threaded portion or the second threaded portion than the second side surface. The card protrusion is also provided with a clearance portion between the top surface and the side surface.

7. The connecting device according to claim 4, characterized in that, The protrusion includes an inclined side surface, and the slot includes an inclined inner wall. After the protrusion and the slot are engaged, the inclined side surface and the inclined inner wall abut against each other, and the inclination angle of the inclined side surface relative to the first axis is equal to the inclination angle of the inclined inner wall relative to the first axis.

8. The connecting device according to claim 1, characterized in that, One of the pressure plate and the first connector is provided with a positioning post, and the other of the pressure plate and the first connector without a positioning post is provided with a positioning hole. The positioning post and the positioning hole are used to ensure that the first mating structure and the second mating structure are aligned along the direction surrounding the first axis when they are plugged into each other, and to ensure that the second threaded part and the first threaded part are located in the initial installation position where they can be screwed into each other.

9. The connecting device according to claim 1, characterized in that, The first quick-connect assembly further includes a first electrical connector, and the second quick-connect assembly further includes a second electrical connector. The second electrical connector and the first electrical connector are used to achieve electrical connection when the second mating structure is engaged with the first mating structure.

10. A robot, characterized in that, Includes the connecting device as described in any one of claims 1-9.

Images