Connecting components and robotic arms

Abstract

The present invention provides a connection assembly and a robotic arm, the connection assembly comprising: a first connection member including a connection outer ring; a second connection member capable of being installed into the connection outer ring from the first side of the connection outer ring, a slot formed on the second connection member, the slot opening facing the first side; a pressure block capable of being inserted into the slot from the first side; and a locking member for fixing the pressure block between the connection outer ring and the second connection member. This solution achieves locking through the lateral pressure block and the locking member on the outer surface, and has a high preload force. Whether it is axial preload or radial preload, it can ensure very high connection strength. In this solution, since the parts are embedded inside, this solution has almost no effect on the axial length. Moreover, although a part is added, this part is very simple, because it is not necessary to rely on this part to ensure the matching accuracy, so it does not require too high processing accuracy and there is no processing difficulty.

Description

Technical Field

[0001] The present invention relates to the field of robots, and in particular to a connecting component and a robotic arm. Background Art

[0002] In the field of robotic arms, robotic arms are generally composed of multiple joints and multiple connecting rods connected in series. The connection accuracy of each joint will directly affect the robot's motion performance and service life.

[0003] In the field of collaborative robots, robot joints are generally integrated and modular in design, with the connections of the robotic arms assembled like building blocks. Typically, the output flange of a modular joint connects to the input flange of the next modular joint; or the output flange of a modular joint connects to the fixed flange end of the next connecting rod; or the modular joint is embedded in a housing, with the input end of the modular joint fixed to the housing and the output end connected to the next integrated modular joint included in the housing. The connection methods for different joints and joints to connecting rods can be roughly divided into the following three types: the first is the universal axial screw connection, the second is the radial screw connection, and the third is the clamp connection. However, each of these methods has certain problems.

[0004] Therefore, how to design a connection structure that is different from the above connection method and is used to connect two connecting members has become a problem that needs to be solved urgently. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0006] Therefore, one object of the present invention is to provide a connection assembly.

[0007] Another object of the present invention is to provide a robotic arm comprising the above-mentioned connecting assembly.

[0008] To achieve the above-mentioned objectives, the technical solution of the first aspect of the present invention provides a connecting assembly, including: a first connecting member, including a connecting outer ring; a second connecting member, which can be installed into the connecting outer ring from the first side of the connecting outer ring, and a card slot is formed on the second connecting member, and the notch of the card slot faces the first side; a pressure block, which can be inserted into the card slot from the first side; and a locking member, which is used to fix the pressure block between the connecting outer ring and the second connecting member.

[0009] The connection assembly provided by the present invention includes a first connecting member and a second connecting member to be connected. The first connecting member includes a connecting outer ring. The second connecting member can be installed into the connecting outer ring from a first side. The second connecting member has a locking slot formed in it, with the slot opening facing the first side. A pressure block is formed between the locking slots of the connecting outer ring and the second connecting member. The pressure block can be inserted into the locking slot from the first side. After the pressure block is secured to the connecting outer ring and the second connecting member, it is locked in place by a locking member. This solution provides high preload force, both axially and radially, ensuring very high connection strength. Furthermore, this solution allows locking from the outer surface of the connecting outer ring, making the locking process more efficient and easier to operate. Although this solution increases the number of parts, since the parts are embedded internally, this solution has little impact on the axial length. Furthermore, despite the additional parts, these parts are very simple, and since they do not rely on them to ensure accurate fit, they do not require high machining precision and are not difficult to manufacture. The structures of the two connecting members are also relatively simple, making them very easy to manufacture.

[0010] Furthermore, interconnected mounting holes are provided on the side walls of the connecting outer ring, the pressure block and the side walls of the second connecting member. One end of the locking member can be inserted into the mounting hole from the outside of the connecting outer ring and cause the pressure block to squeeze the second connecting member, so that the pressure block, the connecting outer ring and the second connecting member are connected.

[0011] In this technical solution, the locking member is inserted from the outside of the connecting outer ring to achieve a fixed connection between the pressure block, the connecting outer ring, and the second connecting member. Furthermore, during the locking process, the pressure block can squeeze the second connecting member. This means that the pressure block, the connecting outer ring, and the second connecting member are not only connected and fixed by the locking member, but also can be pressed against the second connecting member in the radial and axial directions, thereby achieving a tight fixation between the pressure block and the second connecting member.

[0012] Furthermore, the locking member can deform the connecting outer ring toward the second connecting member, thereby squeezing the second connecting member through the pressure block. This arrangement applies pressure to the second connecting member through the deformation of the connecting outer ring, ensuring a tight fit between the connecting outer ring, the pressure block, and the second connecting member. For example, when installing a locking member such as a bolt, the connecting outer ring can be slightly deformed in the radial direction to enable the pressure block to compress the second connecting member. In other words, the compressive force is generated by the pressure block during the locking process of the locking member, as well as by the deformation of the second connecting member by the pressure block.

[0013] Furthermore, the locking member includes a threaded locking member adapted to the mounting hole.

[0014] In this technical solution, the pressing block, the connecting outer ring, and the second connecting member are locked and fixed by a threaded locking member. The threaded locking member is not only secure and low-cost to install, but also easy to install and disassemble, which can simplify the installation cost of the internal parts of the robot arm.

[0015] Furthermore, the threaded connection member includes a bolt or a screw, for example, at least one of a countersunk bolt, a round head bolt, and a cylindrical head bolt, or at least one of a countersunk screw, a round head screw, and a cylindrical head screw.

[0016] In another technical solution, the locking member includes a pin shaft, or the locking member includes a connecting shaft.

[0017] In any of the above technical solutions, after the pressure block is inserted into the slot and fixed by the locking member, it can generate a force to squeeze the second connecting member. The force is set at a preset angle to the axial direction of the connecting outer ring, and the preset angle is greater than 0° and less than 90°.

[0018] In this technical solution, after the pressure block is inserted into the slot, it can squeeze the second connector. This force is set at a preset angle with the axial direction of the connecting outer ring, and the preset angle is greater than 0° and less than 90°. In other words, the pressure is neither parallel nor perpendicular to the second connector. This allows the force to be decomposed into the end face and circumferential surface along the radial and axial directions of the second connector, thereby forming axial pressure for the end faces of the two connectors to match, and radial pressure for the circumferential direction of the two connectors to match. This creates axial and radial preload between the two connectors. In this way, the second connector can be squeezed and fixed in both the radial and axial directions, thus ensuring the reliability of the connection between the second connector and the first connector.

[0019] Furthermore, the preset angle is greater than or equal to 10° and less than or equal to 80°. Further, the preset angle is greater than or equal to 20° and less than or equal to 70°. Further, the preset angle is greater than or equal to 45° and less than or equal to 60°.

[0020] In any of the above technical solutions, the bottom wall of the slot is a first inclined surface, which extends gradually away from the first side along the direction from the outer side to the inner side of the outer ring. The pressure block is provided with a second inclined surface that matches the first inclined surface. The shape of the pressure block matches the shape of the slot.

[0021] In this technical solution, the bottom wall of the retaining groove is an inclined surface. This inclined surface extends gradually away from the first side from the outside to the inside of the connecting outer ring. The pressure block is provided with a matching inclined surface. The interaction of these two inclined surfaces generates a force acting on the second connector. This force is split into a radial pressure component radially inward of the second connector and an axial force component axially toward the second side. This compressive force simultaneously compresses and secures the second connector in both the radial and axial directions, ensuring a secure connection between the second connector and the first connector. In other words, in this solution, the force is generated during the tightening process through the interaction between the pressure block and the retaining groove. The radial pressure causes the second connector to deform outward, thereby achieving a tensioned fit between the second connector and the connecting outer ring. In other words, the force generated by the pressure block causes the sidewalls of the retaining groove to deform and expand, thereby achieving an expansion fit between the second connector and the connecting outer ring.

[0022] Furthermore, the applied force is perpendicular to the first inclined surface and can be decomposed into radial and axial components, ensuring a secure connection between the outer ring and the second connector. Furthermore, the first inclined surface comprises one or a combination of a conical surface, an arcuate surface, and a stepped surface. There are no specific requirements for the shape of the first inclined surface, as long as it can generate the required applied force.

[0023] In any of the above technical solutions, the slot is enclosed by the second connector and the outer connecting ring. Specifically, the slot is located at the edge of the second connector, and the pressure block, when installed within the slot, is in direct contact with the outer connecting ring. This arrangement allows the outer connecting ring to contact the pressure block, and deformation of the outer connecting ring applies pressure to the second connector, thereby tightening the second connector. For example, when installing a bolt, the outer connecting ring can be slightly deformed to tighten the second connector.

[0024] In any of the above technical solutions, the clamping groove is an annular groove arranged along the circumference of the second connecting member, and there are at least two pressing blocks, both of which can be clamped into the annular groove.

[0025] In this technical solution, the retaining groove is an annular groove arranged along the circumference of the second connecting member. In other words, the retaining groove is provided along the entire circumference of the second connecting member, and it can also be considered that the multiple grooves provided along the circumference of the second connecting member are interconnected. The number of pressing blocks can be two or more. During installation, the pressing blocks can be snapped into the retaining groove and then tightened with bolts or the like. The number of locking members is the same as the number of pressing blocks. Of course, the number of locking members can also be greater than the number of pressing blocks, for example, one clip can be screwed with two screws.

[0026] In any of the above technical solutions, there are multiple card slots, which are arranged at intervals along the circumference of the second connecting member, and the number of pressure blocks, the number of locking members and the number of card slots are consistent.

[0027] In this technical solution, there are multiple slots. These slots are spaced apart along the circumference of the second connector. The number of pressure blocks, locking members, and slots is consistent. Thus, a locked connection between the inner and outer connectors is achieved through the multiple, spaced-apart slots, pressure blocks, and locking members.

[0028] Furthermore, the number of the card slots is 6 to 15. Specifically, the number of the card slots is 12.

[0029] In any of the above technical solutions, the mounting holes include a first mounting hole provided on the connecting outer ring, a second mounting hole provided on the pressure block, and a third mounting hole provided on the second connecting member. The second and third mounting holes are threaded holes. The first mounting hole is a non-threaded hole, such as a countersunk hole. The shape of the first mounting hole can be determined based on the shape of the locking member.

[0030] Furthermore, one end of the locking member close to the connecting outer ring is located in the first mounting hole of the connecting outer ring, thereby achieving hidden installation of the locking member in the connecting outer ring.

[0031] In any of the above technical solutions, the first connecting member also includes an end support structure arranged on the second side of the connecting outer ring, and the end support structure extends from the connecting outer ring toward the interior of the connecting outer ring; the second connecting member is located inside the connecting outer ring and abuts against the end support structure, and the card groove is arranged on the end of the second connecting member away from the end support structure.

[0032] In this technical solution, the first connector also includes an end support structure disposed on the second side of the connecting outer ring. The end support structure extends from the connecting outer ring toward the interior of the connecting outer ring. The second connector is located within the connecting outer ring and abuts the end support structure. A retaining groove is provided on the end of the second connector away from the end support structure. The end support structure provides support and protection for the other side of the second connector.

[0033] The specific structures of the second connecting member and the first connecting member can be set according to actual needs.

[0034] The technical solution of the second aspect of the present invention provides a robotic arm, comprising the connecting assembly provided by any one of the technical solutions of the first aspect.

[0035] The robotic arm provided according to the technical solution of the present invention includes one or more connection assemblies provided by any of the technical solutions of the first aspect. Since the robotic arm includes one or more connection assemblies provided by any of the technical solutions of the first aspect, the robotic arm has all the beneficial effects of the connection assemblies provided by any of the technical solutions of the first aspect.

[0036] Furthermore, the first connecting member and the second connecting member are two joints, or two connecting rods, or a joint and a housing, or a joint or a connecting rod that need to be connected to each other. That is, the connection assembly can be specifically a joint connection assembly, a connecting rod connection assembly, a joint-connecting rod connection assembly, a housing joint connection assembly, or a housing-connecting rod connection assembly.

[0037] Additional aspects and advantages of the invention will become apparent from the description which follows, or may be learned by practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0039] Figure 1 is a schematic structural diagram of a connection assembly provided by an embodiment of the present invention;

[0040] Figure 2 is a perspective view of a connection assembly provided by an embodiment of the present invention;

[0041] Figure 3 is another view of a connection assembly provided by an embodiment of the present invention;

[0042] Figure 4 is a structural schematic diagram of a connection assembly provided by another embodiment of the present invention;

[0043] Figure 5 is a structural schematic diagram of a second connecting member of a connecting assembly provided by an embodiment of the present invention;

[0044] Figure 6 is another structural schematic diagram of the second connecting member of the connecting assembly provided by an embodiment of the present invention;

[0045] Figure 7 is a third structural schematic diagram of the second connecting member of the connecting assembly provided by an embodiment of the present invention;

[0046] Figure 8 yes Figure 7 Schematic diagram of the cross section at AA in the middle;

[0047] Figure 9 is a fourth structural schematic diagram of the second connecting member of the connecting assembly provided by an embodiment of the present invention;

[0048] Figure 10 1 is a schematic structural diagram of a compression block of a connection assembly provided by an embodiment of the present invention;

[0049] Figure 11 1 is another structural schematic diagram of the pressing block of the connection assembly provided in an embodiment of the present invention.

[0050] Figure 12 This is another structural schematic diagram of a compression block of a connection assembly provided by an embodiment of the present invention;

[0051] Figure 13 is a structural schematic diagram of a second connecting member provided by another embodiment of the present invention;

[0052] Figure 14 is another structural schematic diagram of a second connecting member provided by another embodiment of the present invention;

[0053] Figure 15 yes Figure 13 Schematic diagram of the cross section at BB in FIG.

[0054] in, Figures 1 to 15 The corresponding relationship between the reference numerals and component names is as follows:

[0055] 1 first connecting member, 12 connecting outer ring, 122 first mounting hole, 14 end support structure, 2 second connecting member, 3 slot, 32 first inclined surface, 4 pressing block, 42 ​​second mounting hole, 44 second inclined surface, 5 locking member. DETAILED DESCRIPTION

[0056] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0057] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0058] Refer to the following Figures 1 to 15 To describe the connection components provided according to some embodiments of the present invention.

[0059] like Figures 1 to 12 As shown, an embodiment of the first aspect of the present invention provides a connection assembly, comprising: a first connection member 1 including a connection outer ring 12; a second connection member 2 capable of being installed into the connection outer ring 12 from a first side thereof, with a slot 3 formed on the second connection member 2, the slot 3 having a notch facing the first side; a pressure block 4 capable of being inserted into the slot 3 from the first side thereof; and a locking member 5 for securing the pressure block 4 between the connection outer ring 12 and the second connection member 2. The first connection member 1 and the second connection member 2 form two joints.

[0060] The connection assembly provided by the present invention includes a first connection member 1 and a second connection member 2 to be connected. The first connection member 1 includes a connection outer ring 12. The second connection member 2 can be installed into the connection outer ring 12 from a first side of the connection outer ring 12. A slot 3 is formed on the second connection member 2, and the slot 3 is oriented toward the first side. The arrangement of the slot 3 is as follows: Figure 5 and Figure 6 、 Figure 8 and Figure 9 A pressing block 4 is formed between the outer ring 12 and the slot 3 of the second connecting member 2 (the structure of the pressing block 4 is shown in FIG. Figure 10 、 Figure 11 and Figure 12 As shown). The pressure block 4 can be inserted and installed into the slot 3 from the first side. After the pressure block 4 is fixed to the connecting outer ring 12 and the second connecting member 2 is installed, it is locked and fixed by the locking member 5. This solution has a higher pre-tightening force, whether it is axial pre-tightening or radial pre-tightening, it can ensure a very high connection strength. And this solution can be locked from the outer surface of the connecting outer ring 12, making the locking process more efficient and easy to operate. And this solution, although parts are added, because the parts are embedded in the interior, this solution has almost no effect on the axial length. And although parts are added, this part is very simple, because it does not need to rely on this part to ensure the matching accuracy, so it does not require too high processing accuracy and there is no processing difficulty. And the structure of the two connecting parts is also relatively simple, which is very convenient to process.

[0061] The structure of the second connecting member 2 is as follows: Figures 5 to 9 As shown. Further, as Figure 6 and Figure 7 As shown, the second connecting member 2 may further be provided with a mounting hole to achieve fixation between the second connecting member 2 and other parts.

[0062] Furthermore, if Figures 1 to 4 As shown, interconnected mounting holes are provided on the side walls of the connecting outer ring 12, the pressure block 4 and the side walls of the second connecting member 2. One end of the locking member can be inserted into the mounting hole from the outside of the connecting outer ring 12 and cause the pressure block 4 to squeeze the second connecting member 2, so that the pressure block 4, the connecting outer ring 12 and the second connecting member 2 are connected.

[0063] Specifically, if Figure 2 As shown, the mounting holes include a first mounting hole 122 provided on the connecting outer ring 12 and a second mounting hole 42 provided on the pressing block 4 (as shown in FIG. Figure 10 、 Figure 11 and Figure 12 as shown) and a third mounting hole provided on the second connecting member 2.

[0064] In this technical solution, the locking member is inserted from the outside of the connecting outer ring 12 to achieve a fixed connection between the pressure block 4, the connecting outer ring 12, and the second connecting member 2. At the same time, during the locking process of the locking member inserted from the outside of the connecting outer ring 12, the pressure block 4 can be pressed against the second connecting member 2. In other words, the pressure block 4, the connecting outer ring 12, and the second connecting member 2 are not only connected and fixed by the locking member, but also can be pressed against the second connecting member 2 in the radial and axial directions, thereby achieving a tight fixation between the pressure block 4 and the second connecting member 2.

[0065] Furthermore, the locking member can deform the connecting outer ring 12 toward the second connecting member 2, thereby squeezing the second connecting member 2 through the pressing block 4. This arrangement applies pressure to the second connecting member 2 through the deformation of the connecting outer ring 12, ensuring a tight fit between the connecting outer ring 12, the pressing block 4, and the second connecting member 2. For example, when installing a locking member such as a bolt, the connecting outer ring 12 can be slightly deformed in the radial direction to enable the pressing block 4 to compress the second connecting member 2. In other words, the compressive force is generated by the pressing block 4 during the locking process of the locking member, as well as by the deformation of the second connecting member 2 by the pressing block 4.

[0066] Furthermore, if Figures 1 to 4 As shown, the locking member 5 is a threaded locking member, and the pressing block 4, the connecting outer ring 12 and the second connecting member 2 are provided with mounting holes for inserting the threaded locking member 5. The pressing block 4, the connecting outer ring 12 and the second connecting member 2 are connected by the threaded locking member 5.

[0067] In this embodiment, the pressing block 4, the connecting outer ring 12 and the second connecting member 2 are locked and fixed by the threaded locking member 5. The threaded locking member 5 is not only secure and low-cost to install, but also easy to assemble and disassemble, which can simplify the installation cost of the internal parts of the robot arm.

[0068] Furthermore, the threaded connection member includes a bolt, such as at least one of a countersunk bolt, a round head bolt, and a cylindrical head bolt.

[0069] In another embodiment, the locking member 5 includes a pin shaft, or the locking member 5 includes a connecting shaft.

[0070] In any of the above embodiments, if Figure 4 As shown, after the pressing block 4 is inserted into the slot 3, it can generate a force F0 to squeeze the second connecting member 2. The force F0 is set at a preset angle with the axial direction of the connecting outer ring 12, and the preset angle is greater than 0° and less than 90°.

[0071] In this embodiment, after the pressing block 4 is inserted into the slot 3, it can squeeze the second connecting member 2. Figure 4As shown, the force F0 is set at a preset angle with respect to the axis of the connecting outer ring 12, with the preset angle being greater than 0° and less than 90°. In other words, the force F0 is neither parallel nor perpendicular to the second connecting member 2. This allows the force to be decomposed radially and axially onto the end face and circumferential surface of the second connecting member 2, thereby generating an axial pressure F2 for the end faces of the two connecting members and a radial pressure F1 for the circumferential direction of the two connecting members. This creates an axial and radial preload between the two connecting members. This simultaneously compresses and secures the second connecting member 2 in both the radial and axial directions, thus ensuring a reliable connection between the second connecting member 2 and the first connecting member 1.

[0072] Furthermore, the acting force is perpendicular to the first inclined surface 32 , and the acting force can be decomposed into a radial force component and an axial force component, thereby ensuring the connection reliability between the outer ring 12 and the second connecting member 2 .

[0073] Specifically, if Figure 4 As shown, a locking member 5, such as a screw, can generate a preload. This preload can be decomposed into a force applied to the inclined surface of the pressure block 4, achieving a positive pressure on the second connecting member 2, namely, the applied force F0. F0 can be further decomposed into an axial pressure F2 on the second connecting member 2 and a radial pressure F1 on the second connecting member 2. F1 and F2, through the friction coefficient and the radius from the rotation center, form a friction torque, which transmits torque to the second connecting member 2, such as a joint. The axial pressure F2 also has two functions: first, it ensures that the mating end face of the connecting outer ring 12 is fully compressed during installation, achieving a high fit precision and preventing gaps between the mating end faces. Second, the axial force F2 ensures that the second connecting member 2 can withstand certain external axial forces or overturning moments. Because second connecting members 2, such as joints, not only need to transmit large torques, but also withstand certain axial forces and overturning moments, without the axial force F2, the second connecting member 2 may create a gap between the connecting outer ring 12, resulting in a loose fit or poor screw loading, leading to screw breakage. The traditional radial connection method does not have the axial pressure F2, and cannot have the advantages brought by the above-mentioned F2 axial force.

[0074] Among them, the radial pressure F1 can cause the second connecting member 2 to deform outward, thereby realizing a tensioning installation between the second connecting member 2 and the connecting outer ring 12, that is, the force generated by the pressure block 4 can cause the side wall of the slot to deform and expand, thereby realizing an expansion installation between the second connecting member 2 and the connecting outer ring 12.

[0075] Furthermore, the preset angle is greater than or equal to 20° and less than or equal to 70°. Furthermore, the preset angle is greater than or equal to 45° and less than or equal to 60°.

[0076] In any of the above embodiments, if Figure 1 、 Figure 4 and Figures 10 to 12 As shown, the bottom wall of the slot 3 is a first inclined surface 32, and the first inclined surface 32 gradually extends away from the first side along the direction from the outside to the inside of the outer ring 12. Figure 1 、 Figure 4 and Figure 12 As shown, the pressing block 4 is provided with a second inclined surface 44 adapted to the first inclined surface 32 .

[0077] In this embodiment, the bottom wall of the slot 3 is an inclined surface. The inclined surface gradually extends away from the first side along the direction from the outside to the inside of the outer ring 12. The pressure block 4 is provided with a matching inclined surface. In this way, the cooperation of the two inclined surfaces can form a force acting on the second connecting member (such as Figure 4 The force F0 shown in the figure can be decomposed into a radial pressure F1 inwardly along the radial direction of the second connecting member 2, and at the same time, decomposed into an axial force F2 in the axial direction toward the second side. This can simultaneously form a compressive fixation on the second connecting member 2 in the radial and axial directions, thus ensuring the connection reliability between the second connecting member 2 and the first connecting member 1. In other words, in this solution, the force is generated during the locking process through the cooperation between the pressure block 4 and the clamping groove 3.

[0078] Furthermore, the first inclined surface 32 includes one or a combination of a conical surface, an arcuate surface and a stepped surface. There is no special requirement for the shape of the first inclined surface 32, as long as it can generate the required force.

[0079] In any of the above embodiments, the slot 3 is surrounded by the second connector 2 and the connecting outer ring 12. That is, the slot 3 is provided at the edge of the second connector 2, and the pressing block 4, after being installed in the slot 3, can directly contact the connecting outer ring 12. This arrangement enables the connecting outer ring 12 to contact the pressing block 4, so that the deformation of the connecting outer ring 12 can apply pressure to the second connector 2, thereby compressing the second connector 2. For example, when installing a bolt, the connecting outer ring can be slightly deformed to compress the second connector 2.

[0080] In any of the above embodiments, if Figure 2 、 Figure 3 、 Figure 5 and Figure 6 As shown, there are multiple slots 3 , which are spaced apart along the circumference of the second connecting member 2 , and the number of the pressing blocks 4 , the number of the locking members 5 and the number of the slots 3 are consistent.

[0081] In this embodiment, there are multiple slots 3. These slots 3 are spaced apart along the circumference of the second connector 2. The number of pressure blocks 4 and locking members 5 is the same as the number of slots 3. Thus, a locked connection between the inner and outer connectors is achieved through the multiple, spaced-apart slots 3, pressure blocks 4, and locking members 5.

[0082] Furthermore, the number of the card slots 3 is 6 to 15. Specifically, the number of the card slots 3 is 12.

[0083] In any of the above embodiments, the mounting holes include a first mounting hole 122 provided on the connecting outer ring 12, a second mounting hole 42 provided on the pressure block 4, and a third mounting hole provided on the second connecting member 2. The second mounting hole 42 and the third mounting hole are threaded holes. The first mounting hole 122 is a non-threaded hole, such as a countersunk hole. The shape of the first mounting hole 122 can be determined based on the shape of the locking member 5.

[0084] Furthermore, one end of the locking member 5 close to the connecting outer ring 12 is located in the first mounting hole 122 of the connecting outer ring 12 , thereby achieving hidden installation of the locking member 5 in the connecting outer ring 12 .

[0085] In any of the above embodiments, if Figures 1 to 4 As shown, the first connecting member 1 also includes an end support structure 14 arranged on the second side of the connecting outer ring 12, and the end support structure 14 extends from the connecting outer ring 12 to the inside of the connecting outer ring 12; the second connecting member 2 is located in the connecting outer ring 12 and abuts against the end support structure 14, and the card slot 3 is arranged on the end of the second connecting member 2 away from the end support structure 14.

[0086] In this embodiment, the first connector 1 further includes an end support structure 14 disposed on the second side of the connecting outer ring 12. The end support structure 14 extends from the connecting outer ring 12 toward the interior of the connecting outer ring 12. The second connector 2 is located within the connecting outer ring 12 and abuts against the end support structure 14. The retaining groove 3 is disposed on the end of the second connector 2 that is distal to the end support structure 14. The end support structure 14 provides support and protection for the other side of the second connector 2.

[0087] The specific structures of the second connecting member 2 and the first connecting member 1 can be set according to actual needs.

[0088] Example 2

[0089] Refer to the following Figures 1 to 15 To describe the connection components provided according to some embodiments of the present invention.

[0090] like Figures 1 to 15As shown, an embodiment of the first aspect of the present invention provides a connection assembly, comprising: a first connection member 1 including a connection outer ring 12; a second connection member 2 capable of being installed into the connection outer ring 12 from a first side thereof, with a slot 3 formed on the second connection member 2, the slot 3 having a notch facing the first side; a pressure block 4 capable of being inserted into the slot 3 from the first side thereof; and a locking member 5 for securing the pressure block 4 between the connection outer ring 12 and the second connection member 2. The first connection member 1 and the second connection member 2 are respectively a connecting rod and a joint.

[0091] The connection assembly provided by the present invention includes a first connecting member 1 and a second connecting member 2 to be connected. The first connecting member 1 includes a connecting outer ring 12. The second connecting member 2 can be installed into the connecting outer ring 12 from a first side. A retaining groove 3 is formed on the second connecting member 2, with the notch of the retaining groove 3 facing the first side. A pressure block 4 is formed between the retaining groove 3 of the connecting outer ring 12 and the second connecting member 2. The pressure block 4 can be inserted into the retaining groove 3 from the first side. After the pressure block 4 is fixed to the connecting outer ring 12 and the second connecting member 2, it is locked in place by a locking member 5. This solution provides a high preload force, both axially and radially, ensuring very high connection strength. Furthermore, this solution allows locking from the outer surface of the connecting outer ring 12, making the locking process more efficient and easier to operate. Although this solution requires additional components, since the components are embedded internally, it has little impact on the axial length. Although additional parts are required, these parts are very simple. Since they are not needed to ensure the matching accuracy, they do not require high processing accuracy and are not difficult to process. The structure of the two connecting parts is also relatively simple, making them very easy to process.

[0092] Furthermore, if Figures 1 to 4 As shown, the locking member 5 is a threaded locking member, and the pressing block 4, the connecting outer ring 12 and the second connecting member 2 are provided with mounting holes for inserting the threaded locking member 5. The pressing block 4, the connecting outer ring 12 and the second connecting member 2 are connected by the threaded locking member 5.

[0093] In this embodiment, the pressing block 4, the connecting outer ring 12 and the second connecting member 2 are locked and fixed by the threaded locking member 5. The threaded locking member 5 is not only secure and low-cost to install, but also easy to assemble and disassemble, which can simplify the installation cost of the internal parts of the robot arm.

[0094] Furthermore, the threaded connection member is a screw, for example, at least one of a countersunk screw, a round head screw, and a cylindrical head screw.

[0095] In any of the above embodiments, if Figure 1 、 Figure 4 and Figures 10 to 12As shown, the bottom wall of the slot 3 is a first inclined surface 32, and the first inclined surface 32 gradually extends away from the first side along the direction from the outside to the inside of the outer ring 12. Figure 1 、 Figure 4 and Figure 12 As shown, the pressing block 4 is provided with a second inclined surface 44 adapted to the first inclined surface 32 .

[0096] In this embodiment, the bottom wall of the slot 3 is an inclined surface. This inclined surface gradually extends away from the first side along the direction from the outside to the inside of the outer ring 12. The pressure block 4 is provided with a matching inclined surface. The cooperation of the two inclined surfaces thus generates a force acting on the second connecting member. This force can be decomposed into a radial pressure component in the radial direction inward of the second connecting member 2, and simultaneously decomposed into an axial force component axially toward the second side. This can simultaneously squeeze and fix the second connecting member 2 in the radial and axial directions, thereby ensuring the reliability of the connection between the second connecting member 2 and the first connecting member 1. In other words, in this solution, the force is generated during the locking process through the cooperation between the pressure block 4 and the slot 3.

[0097] Furthermore, the inclination angle of the first inclined surface 32 is greater than or equal to 10° and less than or equal to 80°, further, greater than or equal to 20° and less than or equal to 70°. Furthermore, the preset angle is greater than or equal to 45° and less than or equal to 60°.

[0098] Furthermore, the first inclined surface 32 includes one or a combination of a conical surface, an arcuate surface and a stepped surface. There is no special requirement for the shape of the first inclined surface 32, as long as it can generate the required force.

[0099] In any of the above embodiments, the slot 3 is surrounded by the second connector 2 and the connecting outer ring 12. That is, the slot 3 is provided at the edge of the second connector 2, and the pressing block 4, after being installed in the slot 3, can directly contact the connecting outer ring 12. This arrangement enables the connecting outer ring 12 to contact the pressing block 4, so that the deformation of the connecting outer ring 12 can apply pressure to the second connector 2, thereby compressing the second connector 2. For example, when installing a bolt, the connecting outer ring can be slightly deformed to compress the second connector 2.

[0100] In any of the above embodiments, if Figures 13 to 15 As shown, the slot 3 is an annular groove arranged along the circumference of the second connecting member 2 (as shown in FIG. Figure 14 As shown, the clamping groove 3 is arranged 360° along the circumferential direction, and there are at least two pressing blocks 4, both of which can be clamped into the annular groove.

[0101] In this embodiment, the card slot 3 is an annular groove provided along the circumference of the second connecting member 2. That is, the card slot 3 is provided along the entire circumference of the second connecting member 2, and it can also be considered that the multiple grooves provided along the circumference of the second connecting member 2 are interconnected. The number of the pressing blocks 4 can be two or more. During installation, the pressing block 4 can be clamped into the card slot 3 and then locked with bolts or the like. The number of locking members 5 is the same as the number of pressing blocks 4. Of course, the number of locking members 5 can also be more than the number of pressing blocks 4, for example, it is also possible to use two screws for one clip.

[0102] In any of the above embodiments, the mounting holes include a first mounting hole 122 provided on the connecting outer ring 12, a second mounting hole 42 provided on the pressure block 4, and a third mounting hole provided on the second connecting member 2. The second mounting hole 42 and the third mounting hole are threaded holes. The first mounting hole 122 is a non-threaded hole, such as a countersunk hole. The shape of the first mounting hole 122 can be determined based on the shape of the locking member 5.

[0103] Furthermore, one end of the locking member 5 close to the connecting outer ring 12 is located in the first mounting hole 122 of the connecting outer ring 12 , thereby achieving hidden installation of the locking member 5 in the connecting outer ring 12 .

[0104] In any of the above embodiments, if Figures 1 to 4 As shown, the first connecting member 1 also includes an end support structure 14 arranged on the second side of the connecting outer ring 12, and the end support structure 14 extends from the connecting outer ring 12 to the inside of the connecting outer ring 12; the second connecting member 2 is located in the connecting outer ring 12 and abuts against the end support structure 14, and the card slot 3 is arranged on the end of the second connecting member 2 away from the end support structure 14.

[0105] In this embodiment, the first connector 1 further includes an end support structure 14 disposed on the second side of the connecting outer ring 12. The end support structure 14 extends from the connecting outer ring 12 toward the interior of the connecting outer ring 12. The second connector 2 is located within the connecting outer ring 12 and abuts against the end support structure 14. The retaining groove 3 is disposed on the end of the second connector 2 that is distal to the end support structure 14. The end support structure 14 provides support and protection for the other side of the second connector 2.

[0106] The specific structures of the second connecting member 2 and the first connecting member 1 can be set according to actual needs.

[0107] Example 3

[0108] like Figures 1 to 12As shown, an embodiment of the first aspect of the present invention provides a connection assembly, comprising: a first connection member 1 including a connection outer ring 12; a second connection member 2 capable of being installed into the connection outer ring 12 from a first side thereof, with a slot 3 formed on the second connection member 2, the slot 3 having a notch facing the first side; a pressure block 4 capable of being inserted into the slot 3 from the first side thereof; and screws for securing the pressure block 4 between the connection outer ring 12 and the second connection member 2. The first connection member 1 and the second connection member 2 are two connecting rods, or one is a connecting rod and the other is a housing of a robotic arm.

[0109] Furthermore, the slot 3 is surrounded by the second connector 2 and the connecting outer ring 12. Specifically, the slot 3 is provided at the edge of the second connector 2, and the pressure block 4, when installed within the slot 3, can directly contact the connecting outer ring 12. This arrangement allows the connecting outer ring 12 to contact the pressure block 4, and deformation of the connecting outer ring 12 applies pressure to the second connector 2, thereby tightening the second connector 2. For example, when installing a bolt, the connecting outer ring can be slightly deformed to tighten the second connector 2.

[0110] The connection assembly provided by the present invention includes a first connecting member 1 and a second connecting member 2 to be connected. The first connecting member 1 includes a connecting outer ring 12. The second connecting member 2 can be installed into the connecting outer ring 12 from a first side. A locking slot 3 is formed in the second connecting member 2, with the slot 3 facing the first side. A pressure block 4 is formed between the locking slot 3 of the connecting outer ring 12 and the second connecting member 2. The pressure block 4 can be inserted into the locking slot 3 from the first side. After the pressure block 4 is fixed to the connecting outer ring 12 and the second connecting member 2, it is locked with screws. This solution provides high preload force, both axially and radially, ensuring very high connection strength. Furthermore, this solution allows locking from the outer surface of the connecting outer ring 12, making the locking process more efficient and easier to operate. Although this solution requires additional components, since the components are embedded internally, this solution has little impact on the axial length. Furthermore, despite the additional components, these components are very simple, and since they do not rely on them to ensure fit accuracy, they do not require high machining precision and are not difficult to manufacture. Moreover, the structures of the two connecting parts are relatively simple and very convenient to process.

[0111] In any of the above embodiments, if Figure 1 、 Figure 4 and Figures 10 to 12 As shown, the bottom wall of the slot 3 is a first inclined surface 32, and the first inclined surface 32 gradually extends away from the first side along the direction from the outside to the inside of the outer ring 12. Figure 1 、 Figure 4 and Figure 12 As shown, the pressing block 4 is provided with a second inclined surface 44 adapted to the first inclined surface 32 .

[0112] In this embodiment, the bottom wall of the slot 3 is an inclined surface. This inclined surface gradually extends away from the first side along the direction from the outside to the inside of the outer ring 12. The pressure block 4 is provided with a matching inclined surface. The cooperation of the two inclined surfaces thus generates a force acting on the second connecting member. This force can be decomposed into a radial pressure component in the radial direction inward of the second connecting member 2, and simultaneously decomposed into an axial force component axially toward the second side. This can simultaneously squeeze and fix the second connecting member 2 in the radial and axial directions, thereby ensuring the reliability of the connection between the second connecting member 2 and the first connecting member 1. In other words, in this solution, the force is generated during the locking process through the cooperation between the pressure block 4 and the slot 3.

[0113] In any of the above embodiments, if Figures 1 to 12 As shown, the number of the slots 3 is 6 to 15, and the 6 to 15 slots 3 are arranged at intervals along the circumference of the second connecting member 2. The number of the pressing blocks 4 and the number of the screws are 6 to 15, and correspond one to one.

[0114] Furthermore, one end of the screw close to the connecting outer ring 12 is located in the first mounting hole 122 of the connecting outer ring 12 , thereby achieving hidden installation of the screw in the connecting outer ring 12 .

[0115] In any of the above embodiments, if Figures 1 to 4 As shown, the first connecting member 1 also includes an end support structure 14 arranged on the second side of the connecting outer ring 12, and the end support structure 14 extends from the connecting outer ring 12 to the inside of the connecting outer ring 12; the second connecting member 2 is located in the connecting outer ring 12 and abuts against the end support structure 14, and the card slot 3 is arranged on the end of the second connecting member 2 away from the end support structure 14.

[0116] In this embodiment, the first connector 1 further includes an end support structure 14 disposed on the second side of the connecting outer ring 12. The end support structure 14 extends from the connecting outer ring 12 toward the interior of the connecting outer ring 12. The second connector 2 is located within the connecting outer ring 12 and abuts against the end support structure 14. The retaining groove 3 is disposed on the end of the second connector 2 that is distal to the end support structure 14. The end support structure 14 provides support and protection for the other side of the second connector 2.

[0117] The specific structures of the second connecting member 2 and the first connecting member 1 can be set according to actual needs.

[0118] An embodiment of the second aspect of the present invention provides a robotic arm (not shown in the figure), comprising a connecting assembly provided by any embodiment of the first aspect.

[0119] A robotic arm provided according to an embodiment of the present invention includes one or more connection assemblies provided in any one of the embodiments of the first aspect. Since the robotic arm includes one or more connection assemblies provided in any one of the embodiments of the first aspect, the robotic arm has all the beneficial effects of the connection assemblies provided in any one of the embodiments of the first aspect.

[0120] Furthermore, the first connecting member 1 and the second connecting member 2 are two joints, or two connecting rods, or a joint and a housing, or a joint or a connecting rod that need to be connected to each other. That is, the connection assembly can be specifically a joint connection assembly, a connecting rod connection assembly, a joint-connecting rod connection assembly, a housing joint connection assembly, or a housing-connecting rod connection assembly.

[0121] In this specification, the terms "connect," "install," and "fix" should be understood broadly. For example, "connect" can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0122] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0123] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A connection assembly, characterized in that: For a robotic arm, the connection assembly includes: A first connecting member includes a connecting outer ring; a second connecting member capable of being installed in the connecting outer ring from the first axial side of the connecting outer ring, wherein a clamping groove is formed on the second connecting member, and the notch of the clamping groove faces the first side; A pressing block, capable of being inserted into the card slot from the first side; A locking member, used for fixing the pressing block between the connecting outer ring and the second connecting member; The clamping slot is surrounded by the second connecting member and the connecting outer ring; The first connecting member further includes an end support structure provided on the second side of the connecting outer ring, wherein the end support structure extends from the connecting outer ring toward the interior of the connecting outer ring; The second connecting member is located in the connecting outer ring and abuts against the end support structure. The clamping groove is provided on an end of the second connecting member away from the end support structure.

2. The connection assembly according to claim 1, characterized in that Mounting holes that are interconnected are provided on the side walls of the connecting outer ring, the pressure block and the second connecting member. One end of the locking member can be inserted into the mounting hole from the outside of the connecting outer ring and cause the pressure block to squeeze the second connecting member, so that the pressure block, the connecting outer ring and the second connecting member are connected.

3. The connection assembly according to claim 2, characterized in that The locking member includes a threaded locking member adapted to the mounting hole; The locking member can deform the connecting outer ring toward the second connecting member, so as to squeeze the second connecting member through the pressing block.

4. The connection assembly according to claim 1, wherein: After the pressure block is inserted into the slot and locked by the locking member, it can generate a force to squeeze the second connecting member. The force is set at a preset angle with the axial direction of the connecting outer ring, and the preset angle is greater than 0° and less than 90°.

5. The connection assembly according to claim 4, characterized in that The preset angle is greater than or equal to 10° and less than or equal to 80°.

6. The connection assembly according to claim 1, characterized in that The bottom wall surface of the clamping groove is a first inclined surface, and the first inclined surface gradually extends away from the first side along the direction from the outside to the inside of the connecting outer ring; The pressing block is provided with a second inclined surface adapted to the first inclined surface.

7. The connection assembly according to claim 6, characterized in that The first inclined surface includes one or a combination of a tapered surface, an arcuate surface and a stepped surface.

8. The connection assembly according to any one of claims 1 to 7, characterized in that: The clamping groove is an annular groove arranged along the circumference of the second connecting member. There are at least two pressing blocks, both of which can be clamped into the annular groove.

9. The connection assembly according to any one of claims 1 to 7, characterized in that: There are multiple card slots, which are spaced apart along the circumference of the second connecting member. The number of the pressing blocks, the number of the locking members and the number of the card slots are consistent.

10. The connection assembly according to claim 9, characterized in that The number of the card slots is 6 to 15.

11. A robotic arm, characterized in that: Comprising at least one connection assembly according to any one of claims 1 to 10.

12. The robotic arm according to claim 11, wherein: The first connecting member and the second connecting member are two joints that need to be connected to each other, or two connecting rods, or a joint and a connecting rod, or a joint and a housing.

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