Stirring structure, powder barrel, driving device, powder distribution equipment and clutch assembly

Abstract

The stirring structure comprises a stirring rod and a first connector, the first connector comprises a first base plate and a first boss, the first boss is arranged on the first base plate and deviates from the rotating center line of the first base plate, the side, opposite to the first boss, of the first base plate is connected with the stirring rod, and the stirring rod is connected with the first base plate. The first boss is suitable for being connected with a driving device in a matched mode and driven to rotate so as to drive the stirring rod to rotate, and when the rotating resistance of the stirring rod is larger than a preset value, the first boss and the driving device slide relatively and are separated. The first connector is connected with the driving device in a matched mode, so that the driving device can drive the first connector to rotate so as to drive the stirring rod to rotate, and when the rotating resistance of the stirring rod is larger than a preset value, the first connector can slide relative to the driving device and be separated from the driving device, so that power transmission is cut off, overload is avoided, and parts can be protected; the structure damage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental equipment, in particular to a stirring structure, a powder barrel, a driving device, a powder distributing device and a clutch component. Background Art

[0002] Powder dispensing equipment is a device used to distribute powder materials into corresponding containers as needed. It usually stores powder materials in a powder barrel and drives the powder barrel to discharge powder. In actual applications, powder materials are easily dampened and agglomerated, which increases the resistance of the stirring structure in the powder barrel when rotating. When the stirring resistance is too large, the powder dispensing equipment is easily damaged, which affects its service life. Utility Model Content

[0003] The utility model aims to provide a stirring structure, a powder barrel, a driving device, a powder dispensing device and a clutch assembly, so as to solve the problem that the powder dispensing device is easily damaged when the stirring resistance is too large.

[0004] In order to achieve the purpose of the utility model, the utility model provides the following technical solutions:

[0005] In the first aspect, the utility model provides a stirring structure, comprising: a stirring rod; a first joint, comprising a first substrate and a first boss, the first boss being arranged on the first substrate, and the first boss deviating from the rotation center line of the first substrate; the first substrate is connected to the stirring rod on the side facing away from the first boss, the first boss is suitable for being connected with a driving device and being driven to rotate to drive the stirring rod to rotate, and when the rotation resistance of the stirring rod is greater than a preset value, the first boss slides relative to the driving device and separates.

[0006] In one embodiment, a rotation centerline of the first substrate is colinear with a rotation centerline of the stirring rod, and the first boss extends along a rotation direction of the first substrate.

[0007] In one embodiment, in the rotation direction of the first substrate, a dimension of an end of the first boss away from the first substrate is smaller than a dimension of an end of the first boss connected to the first substrate.

[0008] In one embodiment, the first boss includes a first side surface on one side of the rotation direction of the first substrate, the first side surface is inclined relative to the rotation center line of the first substrate, and an extension surface of the first side surface passes through the center point of the first substrate; the first side surface is suitable for being connected to a driving device and suitable for relative sliding with the driving device when the rotation resistance of the stirring rod is greater than a preset value.

[0009] In one embodiment, the first boss also includes a second side surface opposite to the first side surface in the rotation direction of the first substrate, the second side surface is inclined relative to the rotation center line of the first substrate, and an extension surface of the second side surface passes through the center point of the first substrate, and the radial projection of the first boss on the first substrate is trapezoidal; the second side surface is suitable for being connected with a driving device, and when the rotation resistance of the stirring rod is greater than a preset value, if the first side surface and the driving device slide relative to each other, the second side surface is separated from the driving device; if the second side surface and the driving device slide relative to each other, the first side surface is separated from the driving device.

[0010] In one embodiment, there are multiple first bosses, and the multiple first bosses are arranged in annular spaced relation on the first substrate, and a first receiving groove is formed between two adjacent first bosses; each first boss and each first receiving groove are suitable for cooperating with the driving device.

[0011] In one embodiment, the distances between two adjacent first bosses among the plurality of first bosses are not all equal or not all equal, and / or the sizes of the plurality of first bosses in the rotation direction of the first substrate are not all equal or not all equal.

[0012] In one embodiment, the stirring rod includes a transmission shaft and a rod body, one end of the transmission shaft is connected to the first substrate, and the other end is connected to the rod body.

[0013] In one embodiment, the stirring rod further includes an elastic component, a receiving groove is formed at one end of the transmission shaft facing away from the first substrate, and the elastic component is fixed in the receiving groove and elastically connected to the rod body.

[0014] In one embodiment, a first matching portion is provided on the side wall of the receiving groove, and a second matching portion is provided on the outer peripheral surface at the end of the rod body. The first matching portion and the second matching portion are matched and connected so that the rod body and the transmission shaft are movable in the axial direction and relatively fixed in the circumferential direction.

[0015] In the second aspect, the utility model also provides a powder barrel, comprising a barrel body, a cover body and a stirring structure described in any one of the various embodiments of the first aspect, the barrel body having a relative powder outlet and a cover opening, the cover body being covered on the cover opening, the stirring rod of the stirring structure being rotatably connected to the cover body, and the stirring rod being suitable for controlling the opening of the powder outlet.

[0016] In one embodiment, the powder barrel also includes a bearing, the cover body is provided with a mounting hole, and the bearing is fixedly arranged in the mounting hole; the stirring rod includes a transmission shaft and a rod body, the transmission shaft is passed through the mounting hole and is rotatably connected to the bearing, one end of the transmission shaft is connected to the first substrate of the stirring structure, and the other end is connected to the rod body, the rod body is accommodated in the barrel body, and is suitable for controlling the opening of the powder outlet.

[0017] In the third aspect, the utility model also provides a driving device, which is suitable for driving the stirring structure described in any one of the various embodiments of the first aspect to rotate, and the driving device comprises: a driving mechanism; a second joint, comprising a second substrate and a second boss, the second boss is arranged on the second substrate, and the second boss deviates from the rotation center line of the second substrate; the side of the second substrate facing away from the second boss is connected to the driving mechanism, and the driving mechanism is suitable for driving the second joint to rotate; the second boss is suitable for cooperating and connecting with the first boss of the stirring structure to drive the stirring rod of the stirring structure to rotate; when the rotation resistance of the stirring rod is greater than a preset value, the second boss slides relative to the first boss and separates.

[0018] In one embodiment, the second boss extends along the rotation direction of the second substrate, and in the rotation direction of the second substrate, a dimension of an end of the second boss away from the second substrate is smaller than a dimension of an end connected to the second substrate.

[0019] In one embodiment, the second boss includes a third side surface on one side of the rotation direction of the second substrate, the third side surface is inclined relative to the rotation center line of the second substrate, and an extension surface of the third side surface passes through the center point of the second substrate; the third side surface is suitable for cooperating with the first boss and sliding relatively when the rotation resistance of the stirring rod is greater than a preset value.

[0020] In one embodiment, the second boss also includes a fourth side surface opposite to the third side surface in the rotation direction of the second substrate, the fourth side surface is inclined relative to the rotation center line of the second substrate, and an extension surface of the fourth side surface passes through the center point of the second substrate, and the radial projection of the second boss on the second substrate is trapezoidal; the fourth side surface is suitable for being connected with the first boss, and when the rotation resistance of the stirring rod is greater than a preset value, if the third side surface and the first boss slide relative to each other, the fourth side surface is separated from the first boss; if the fourth side surface and the first boss slide relative to each other, the third side surface is separated from the first boss.

[0021] In one embodiment, there are multiple second bosses, and the multiple second bosses are arranged in annular spaced relation on the second substrate, and a second receiving groove is formed between two adjacent second bosses; each second boss and each second receiving groove are suitable for cooperating and connecting with the first joint of the stirring structure.

[0022] In one embodiment, the distances between two adjacent second bosses among the plurality of second bosses are not all equal or not all equal, and / or the sizes of the plurality of second bosses in the rotation direction of the second substrate are not all equal or not all equal.

[0023] In one embodiment, the driving mechanism includes a driving member and a transmission assembly, the driving member is connected to the transmission assembly, and the second joint is connected to the transmission assembly; the transmission assembly includes a speed change mechanism and a transmission rod, the speed change mechanism is connected to the driving member, one end of the transmission rod is connected to the speed change mechanism, and the other end is connected to the second joint; the driving member drives the transmission rod to rotate through the speed change mechanism, and then drives the second joint to rotate.

[0024] In one embodiment, the second joint also includes a connecting rod, which is connected to the surface of the second substrate facing away from the second boss; the driving mechanism also includes a connecting plate, a sliding block and a second elastic member, the sliding block is slidably arranged on the transmission rod, and the end of the transmission rod facing away from the speed change mechanism is fixedly connected to the connecting plate, the connecting plate is provided with a transmission hole, the connecting rod is passed through the transmission hole and is fixedly connected to the sliding block, the connecting rod and the connecting plate are relatively fixed in the circumferential direction, and the second elastic member elastically abuts against the connecting plate and the second substrate.

[0025] In one embodiment, there are multiple transmission rods, and the multiple transmission rods are arranged at intervals; the rotation center line of the connecting rod is collinear with the rotation center line of the second substrate, and the multiple transmission rods revolve around the rotation center line of the second substrate; or, there are multiple connecting rods, and the multiple connecting rods are arranged at intervals; the rotation center line of the transmission rod is collinear with the rotation center line of the second substrate, and the multiple connecting rods revolve around the rotation center line of the second substrate.

[0026] In one embodiment, the driving device also includes a detector, which is arranged on one side of the transmission rod. The detector is suitable for detecting the position of the sliding block to determine the connection state of the second joint and the first joint, and to alarm when the second joint is separated from the first joint.

[0027] In a fourth aspect, the utility model further provides a powder dispensing device, comprising a powder barrel as described in any one of the various embodiments of the second aspect, and a driving device as described in any one of the various embodiments of the third aspect, wherein the first joint of the powder barrel is suitable for being connected with the second joint of the driving device, and when the rotational resistance of the stirring rod of the powder barrel is greater than a preset value, the second joint slides relative to the first joint and separates.

[0028] In the fifth aspect, the utility model also provides a clutch assembly, including: a first joint, including a first substrate and a first boss, the first boss is arranged on the first substrate, and the first boss deviates from the rotation center line of the first substrate; a second joint, including a second substrate and a second boss, the second boss is arranged on the second substrate, and the second boss deviates from the rotation center line of the second substrate; the first substrate is opposite to the second substrate, and the first boss is suitable for being matched with the second boss for connection; wherein, the first joint rotates under the drive of the second joint, and when the rotation resistance of the first joint is greater than a preset value, the second boss slides relative to the first boss and separates from each other, so that the first joint is separated from the second joint.

[0029] In one embodiment, a rotation centerline of the first substrate is colinear with a rotation centerline of the second substrate, the first boss extends along the rotation direction of the first substrate, and the second boss extends along the rotation direction of the second substrate.

[0030] In one embodiment, in the rotation direction of the first substrate, the size of the first boss at one end away from the first substrate is smaller than the size of the end connected to the first substrate; in the rotation direction of the second substrate, the size of the second boss at one end away from the second substrate is smaller than the size of the end connected to the second substrate.

[0031] In one embodiment, the first boss includes a first side surface on one side in the rotation direction of the first substrate, the first side surface is inclined relative to the rotation center line of the first substrate, and an extension surface of the first side surface passes through the center point of the first substrate; the second boss includes a third side surface on one side in the rotation direction of the second substrate, the third side surface is inclined relative to the rotation center line of the second substrate, and an extension surface of the third side surface passes through the center point of the second substrate; the third side surface is suitable for mating and connecting with the first side surface, and sliding relative to each other when the rotation resistance of the first joint is greater than a preset value.

[0032] In one embodiment, the first boss also includes a second side surface opposite to the first side surface in the rotation direction of the first substrate, the second side surface is inclined relative to the rotation center line of the first substrate, and an extension surface of the second side surface passes through the center point of the first substrate, and the orthographic projection of the first boss in the radial direction of the first substrate is trapezoidal; the second boss also includes a fourth side surface opposite to the third side surface in the rotation direction of the second substrate, the fourth side surface is inclined relative to the rotation center line of the second substrate, and an extension surface of the fourth side surface passes through the center point of the second substrate, and the orthographic projection of the second boss in the radial direction of the second substrate is trapezoidal; the fourth side surface is suitable for being matched with the second side surface, and when the rotation resistance of the first joint is greater than a preset value, if the fourth side surface and the second side surface slide relative to each other, the first side surface is separated from the third side surface; if the first side surface and the third side surface slide relative to each other, the fourth side surface is separated from the second side surface.

[0033] In one embodiment, there are multiple first bosses, and the multiple first bosses are arranged at intervals along the circumferential direction on the first substrate, and a first receiving groove is formed between two adjacent first bosses; there are multiple second bosses, and the multiple second bosses are arranged at intervals along the circumferential direction on the second substrate, and a second receiving groove is formed between two adjacent second bosses; the second boss is suitable for extending into the first receiving groove, and the first boss is suitable for extending into the second receiving groove.

[0034] In one embodiment, the distance between two adjacent first bosses among the plurality of first bosses is not all equal or not all equal, and / or the sizes of the plurality of first bosses in the rotation direction of the first substrate are not all equal or not all equal; the distance between two adjacent second bosses among the plurality of second bosses is not all equal or not all equal, and / or the sizes of the plurality of second bosses in the rotation direction of the second substrate are not all equal or not all equal.

[0035] In one embodiment, a side of the first substrate facing away from the first boss is connected to a working piece.

[0036] In one embodiment, the side of the first substrate facing away from the first boss is connected to the working piece, the side of the second substrate facing away from the second boss is connected to the driving mechanism, and the second joint is driven to rotate by the driving mechanism to drive the first joint and the working piece to rotate synchronously.

[0037] The stirring structure of the utility model is connected with the driving device through the first joint, so that the driving device can drive the first joint to rotate, and then drive the stirring rod to rotate. When the rotation resistance of the stirring rod is greater than a preset value, the first joint can slide relative to the driving device and separate to cut off the transmission of power and avoid overload. It can protect the components and avoid structural damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 is a perspective view of a first joint of an embodiment;

[0040] Figure 2 is a perspective view of a second joint of an embodiment;

[0041] Figure 3 is a cross-sectional view and a partially enlarged view of a powder dispensing device according to an embodiment;

[0042] Figure 4 is a three-dimensional diagram of a stirring structure of an embodiment;

[0043] Figure 5 is a front view of a powder dispensing apparatus according to one embodiment.

[0044] Description of reference numerals:

[0045] 1000-Powder dispensing equipment;

[0046] 100-clutch assembly;

[0047] 200-powder barrel;

[0048] 300-driving device;

[0049] 10-first joint, 11-first substrate, 111-connecting hole, 12-first boss, 121-first side surface, 122-second side surface, 123-first receiving groove;

[0050] 20 - second joint, 21 - second substrate, 22 - second boss, 221 - third side surface, 222 - fourth side surface, 223 - second receiving groove, 23 - connecting rod;

[0051] 30-stirring structure, 31-stirring rod, 311-transmission shaft, 3111-receiving groove, 3112-first matching portion, 3113-installing groove, 312-rod body, 3121-second matching portion, 3122-powder outlet head, 313-stirring blade, 314-elastic component, 3141-first elastic member, 3142-abutting rod;

[0052] 40-barrel body, 401-powder outlet, 402-cover opening, 41-cover body, 411-mounting hole, 412-powder adding port, 42-bearing;

[0053] 50-driving mechanism, 51-driving member, 52-transmission assembly, 521-speed changing mechanism, 5211-first gear, 5212-second gear, 5213-mounting seat, 522-transmission rod, 53-connecting plate, 531-transmission hole, 54-second elastic member, 55-sliding block;

[0054] 60-detector;

[0055] 70 - powder barrel bracket, 71 - supporting plate, 72 - handle. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0057] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0058] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0059] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0060] refer to Figures 1 to 3An embodiment of the utility model provides a clutch assembly 100 , and the clutch assembly 100 includes a first joint 10 and a second joint 20 .

[0061] The first connector 10 includes a first substrate 11 and a first boss 12 . The first boss 12 is disposed on the first substrate 11 , and the first boss 12 deviates from the rotation center line of the first substrate 11 .

[0062] The second joint 20 includes a second substrate 21 and a second boss 22 . The second boss 22 is disposed on the second substrate 21 and deviates from the rotation center line of the second substrate 21 . The first substrate 11 is opposite to the second substrate 21 , and the first boss 12 is suitable for being matched and connected with the second boss 22 .

[0063] The first joint 10 rotates driven by the second joint 20 . When the rotation resistance of the first joint 10 is greater than a preset value, the second boss 22 slides relative to the first boss 12 and separates from each other, so that the first joint 10 is separated from the second joint 20 .

[0064] The second joint 20 is suitable for connecting with the driving mechanism, and the first joint 10 is suitable for connecting with the working piece. The way in which the first joint 10 and the second joint 20 are matched and connected is not limited. When the rotation resistance of the working piece is less than or equal to the preset value, the first joint 10 and the second joint 20 maintain a matched connection state. At this time, the rotation of the second joint 20 can drive the first joint 10 to rotate, thereby achieving the purpose of driving the working piece to rotate.

[0065] Optionally, the working piece is used for rotation, and the working piece can be a stirring piece, a drill bit, a scraper or an electric screw head, etc., without limitation. When the rotation resistance of the working piece is greater than a preset value, the second joint 20 moves away from the first joint 10 until it is separated, and the matching connection between the first joint 10 and the second joint 20 fails, so that the second joint 20 can no longer drive the first joint 10 to rotate, thereby stopping the rotation of the working piece to avoid overload.

[0066] The first substrate 11 and the second substrate 21 may be flat plates, curved plates, etc., without limitation. The orthographic projections of the first substrate 11 and the second substrate 21 perpendicular to the plate surface may be circular, rectangular, etc., without limitation. Figure 1 and Figure 2 An embodiment is shown in which the first substrate 11 and the second substrate 21 are substantially flat plates, and the orthographic projections of the first substrate 11 and the second substrate 21 perpendicular to the plate surface are circular. This embodiment is described in detail below, and other embodiments may be referred to.

[0067] The rotation centerline of the second joint 20 (i.e., the rotation centerline of the second substrate 21) passes through the geometric center of the second substrate 21 (i.e., the center point of the second substrate 21) and is perpendicular to its surface. The rotation centerline of the first joint 10 (i.e., the rotation centerline of the first substrate 11) passes through the geometric center of the first substrate 11 (i.e., the center point of the first substrate 11) and is perpendicular to its surface. The rotation centerline of the second joint 20 coincides with the rotation centerline of the first joint 10.

[0068] The first boss 12 is disposed on one of the surfaces of the first substrate 11 and protrudes from the surface. The first boss 12 is disposed close to the edge of the first substrate 11 and can be flush with the edge or have a certain distance therefrom without limitation.

[0069] The second boss 22 is disposed on one of the surfaces of the second substrate 21 and protrudes from the surface. The second boss 22 is disposed close to the edge of the second substrate 21 and can be flush with the edge or have a certain distance therefrom without limitation.

[0070] When the first boss 12 and the second boss 22 are connected in cooperation, the second substrate 21 and the first substrate 11 are close to each other, and the first boss 12 and the second boss 22 are in contact with each other in the rotation direction (i.e., circumferential direction) of the second joint 20. The rotation of the second boss 22 drives the first boss 12 to rotate, so that the second joint 20 can drive the first joint 10 to rotate.

[0071] When the rotational resistance of the workpiece is greater than a preset value, the second boss 22 slides relative to the first boss 12, the axial position of the first boss 12 remains unchanged, and the second substrate 21 gradually moves away from the first substrate 11 until the second boss 22 separates from the first boss 12. At this time, the second boss 22 no longer contacts the first boss 12 in the circumferential direction, and the second boss 22 can no longer drive the first boss 12 to rotate, thereby cutting off power transmission. Alternatively, when the rotational resistance of the workpiece is greater than a preset value, the first boss 12 slides relative to the second boss 22, the axial position of the second boss 22 remains unchanged, and the first substrate 11 gradually moves away from the second substrate 21 until the first boss 12 separates from the second boss 22.

[0072] The relative sliding of the first boss 12 and the second boss 22 may be in any form as long as the second substrate 21 and the first substrate 11 can be gradually moved away from each other until the second boss 22 is separated from the first boss 12 .

[0073] It should be noted that when the rotational resistance of the workpiece is less than or equal to the preset value, when the rotational resistance is relatively small, the second substrate 21 and the first substrate 11 are closest to each other, and the circumferential overlapping area of ​​the first boss 12 and the second boss 22 is the largest.

[0074] In one case, when the rotational resistance increases but does not exceed the preset value, the second substrate 21 and the first substrate 11 can be slightly farther away from each other than in the closest state, that is, the first boss 12 and the second boss 22 can have a certain relative sliding, but have not yet separated from each other. At this time, the area where the first boss 12 and the second boss 22 overlap in the circumferential direction is reduced, but the second boss 22 can still transmit power to the first boss 12. In other words, the separation of the second boss 22 from the first boss 12 is not instantaneous, but as the rotational resistance increases, the area where the first boss 12 and the second boss 22 are connected to each other gradually decreases until the connection is released when they are separated from each other.

[0075] In another case, in all cases where the rotational resistance of the workpiece is less than or equal to the preset value, the first boss 12 and the second boss 22 always maintain the same mating connection area, and the first boss 12 and the second boss 22 do not slide relative to each other. When the rotational resistance is greater than the preset value, at this moment the second boss 22 quickly slides relative to the first boss 12 and separates from each other.

[0076] Arranging the first boss 12 and the second boss 22 to deviate from the rotation center line can increase the moment, reduce the local force, and be beneficial to the protection of components.

[0077] The clutch assembly 100 provided by the utility model is connected by the cooperation of the first joint 10 and the second joint 20, so that the second joint 20 can drive the first joint 10 to rotate, and then drive the working part to rotate. When the rotation resistance of the working part is greater than a preset value, the first joint 10 moves away from the second joint 20 and separates from it to cut off the transmission of power, avoid overload, and protect the components.

[0078] In one embodiment, reference Figure 3 , the rotation centerline of the first substrate 11 is colinear with the rotation centerline of the second substrate 21, the first boss 12 extends along the rotation direction of the first substrate 11, and the second boss 22 extends along the rotation direction of the second substrate 21. Such an arrangement can ensure the coaxiality of the first substrate 11 and the second substrate 21, so that the rotation between the first joint 10 and the second joint 20 is more reliable and accurate, which helps to maintain the coordination and stability of the entire system and avoid failures or performance degradation caused by speed differences.

[0079] In one embodiment, reference Figure 1 and Figure 2 In the rotation direction of the first substrate 11, the size of the end of the first boss 12 away from the first substrate 11 is smaller than the size of the end connected to the first substrate 11. In the rotation direction of the second substrate 21, the size of the end of the second boss 22 away from the second substrate 21 is smaller than the size of the end connected to the second substrate 21.

[0080] The first boss 12 and the second boss 22 are both in a shape of a small top and a large root, wherein the top is the end of the first boss 12 away from the first substrate 11 and the end of the second boss 22 away from the second substrate 21; the root is the end of the first boss 12 connected to the first substrate 11 and the end of the second boss 22 connected to the second substrate 21.

[0081] When the first joint 10 and the second joint 20 are switched from the separated state to the mating connection state, the second joint 20 moves toward the first joint 10, and the structure of the first boss 12 and the second boss 22 is set as above, the top is small and the root is large, and the second boss 22 has a larger angle in the rotation direction to extend into the annular space where the first boss 12 is located, which can make it easier for the second boss 22 to be matingly connected with the first boss 12. In addition, the structure with a small top and a large root is also more convenient for setting a mating structure in which the first boss 12 and the second boss 22 slide relative to each other.

[0082] In one embodiment, reference Figure 1 and Figure 2 The first boss 12 includes a first side surface 121 on one side in the rotation direction of the first substrate 11, the first side surface 121 is inclined relative to the rotation center line of the first substrate 11, and an extension surface of the first side surface 121 passes through the center point of the first substrate 11, the second boss 22 includes a third side surface 221 on one side in the rotation direction of the second substrate 21, the third side surface 221 is inclined relative to the rotation center line of the second substrate 21, and an extension surface of the third side surface 221 passes through the center point of the second substrate 21, the third side surface 221 is suitable for being matched and connected with the first side surface 121, and when the rotation resistance of the first joint 10 is greater than a preset value, the first side surface 121 and the third side surface 221 slide relative to each other.

[0083] The first side surface 121 is inclined relative to the rotation center line of the first connector 10, that is, the first side surface 121 is neither parallel to the rotation center line nor perpendicular to the rotation center line, but has an inclined angle. It should be understood that the first side surface 121 does not directly intersect with the rotation center line of the first connector 10, but the extension surface of the first side surface 121 intersects with the rotation center line. From another perspective, the plate surface of the first substrate 11 where the first boss 12 is located is a plane, and the first side surface 121 has an inclined angle with the plane, and the structure that the top of the first boss 12 is small and the root is large must be satisfied.

[0084] The third side surface 221 is inclined relative to the rotation center line of the second joint 20, that is, the third side surface 221 is neither parallel to the rotation center line nor perpendicular to the rotation center line, but has an inclined angle. It should be understood that the third side surface 221 does not directly intersect with the rotation center line of the second joint 20, but the extended surface of the third side surface 221 intersects with the rotation center line. From another perspective, the plate surface of the second substrate 21 where the second boss 22 is located is a plane, and the third side surface 221 has an inclined angle with the plane, and the structure of the second boss 22 having a small top and a large root must be satisfied.

[0085] The first boss 12 and the second boss 22 are both roughly arc-shaped structures that are narrow at the top and wide at the bottom. The first side surface 121 and the third side surface 221 are both inclined planes, so that the contact area between the first boss 12 and the second boss 22 is maximized and relative sliding is facilitated. The extension surface of the first side surface 121 passes through the center point of the first substrate 11, and the extension surface of the third side surface 221 passes through the center point of the second substrate 21. When the first connector 10 is connected to the second connector 20, automatic centering can be achieved to ensure the concentricity of the two, so as to improve the working stability of the entire structure.

[0086] When the first joint 10 is connected with the second joint 20, the third side surface 221 is in close contact with the first side surface 121, and the second joint 20 rotates in one direction around its own rotation center line, and the third side surface 221 and the first side surface 121 are kept in close contact, so that the second boss 22 pushes the first boss 12 to rotate in the same direction. The first side surface 121 and the third side surface 221 are in close contact and achieve surface contact, which can transmit greater torque, avoid local force concentration, make the connection more stable, stabilize the rotation process, reduce noise, and avoid damage due to excessive local force.

[0087] When the rotation resistance of the first joint 10 is greater than the preset value, the rotation resistance of the first joint 10 restricts the first joint 10 from smoothly following the rotation of the second joint 20. During the continuous rotation of the second joint 20, due to the inconsistency of the rotation of the first joint 10 and the second joint 20, the third side surface 221 slides on the first side surface 121 until the second boss 22 separates from the first boss 12. The surface contact between the first side surface 121 and the third side surface 221 allows the two to slide relatively smoothly without getting stuck at a local position and being unable to slide relatively.

[0088] Among them, the angle between the first side surface 121 and the plate surface of the first substrate 11 is not limited, and the angle between the third side surface 221 and the plate surface of the second substrate 21 is not limited. The angle between the first side surface 121 and the plate surface of the first substrate 11 is substantially consistent with the angle between the third side surface 221 and the plate surface of the second substrate 21, and the specific range is, for example, 30°-60°, and specifically, for example, 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc. Within this range of angles, the first boss 12 and the second boss 22 can be fully arranged in a limited space with sufficient axial height to ensure the transmission matching connection effect, and the relative sliding between the third side surface 221 and the first side surface 121 can be achieved when the rotation resistance is greater than a preset value. If the angle is less than 30°, a large space is required to arrange the first boss 12 and the second boss 22 with sufficient axial height, which easily leads to excessive product size and is not conducive to structural miniaturization. If the angle is greater than 60°, it may be difficult for the first side surface 121 and the third side surface 221 to slide relative to each other, and they may get stuck and fail to separate the first connector 10 from the second connector 20 .

[0089] The surface of the first substrate 11 facing the second substrate 21 is a plane, and the surface of the second substrate 21 facing the first substrate 11 is a plane, and when the two planes are parallel, the angle between the third side surface 221 and the surface of the second substrate 21 is equal to the angle between the first side surface 121 and the surface of the first substrate 11, thereby achieving close contact between the first side surface 121 and the third side surface 221.

[0090] In one embodiment, reference Figure 1 and Figure 2 There are multiple first bosses 12, which are arranged circumferentially on the first substrate 11 at intervals, and a first receiving groove 123 is formed between two adjacent first bosses 12. There are multiple second bosses 22, which are arranged circumferentially on the second substrate 21 at intervals, and a second receiving groove 223 is formed between two adjacent second bosses 22. The second boss 22 is suitable for extending into the first receiving groove 123, and the first boss 12 is suitable for extending into the second receiving groove 223.

[0091] The specific number of the first boss 12 and the second boss 22 is not limited. Figure 1 and Figure 2 The embodiment in which the number of the first bosses 12 and the number of the second bosses 22 are both 4 is shown. Circumferential spacing means spacing around the rotational centerline of the first joint 10 and the second joint 20 , that is, spacing around the circumferential direction of the first joint 10 and the second joint 20 .

[0092] Multiple first bosses 12 can be arranged at equal intervals along the annular direction, or can be arranged at unequal intervals, without limitation. Multiple second bosses 22 are also arranged in a similar manner and will not be described in detail. When the first joint 10 is matingly connected with the second joint 20, the second boss 22 corresponds to the first receiving groove 123 one by one and extends therein, and the first boss 12 corresponds to the second receiving groove 223 one by one and extends therein, so that the third side surface 221 of the second boss 22 can contact the first side surface 121 of the first boss 12 to achieve mating connection. After the first joint 10 is separated from the second joint 20, the second boss 22 withdraws from the first receiving groove 123, and the first boss 12 withdraws from the second receiving groove 223, and the driving mechanism drives the second joint 20 to idle, and does not transmit power to the first joint 10.

[0093] Optionally, the distance between each first boss 12 and the center point of the first substrate 11 is the same, the distance between each second boss 22 and the center point of the second substrate 21 is the same, and the distance between the first boss 12 and the center point of the first substrate 11 is the same as the distance between the second boss 22 and the center point of the second substrate 21. This arrangement can improve the fit and connection stability between the first connector 10 and the second connector 20.

[0094] In one embodiment, reference Figure 1 and Figure 2 The first boss 12 further includes a second side surface 122 opposite to the first side surface 121 in the rotation direction of the first substrate 11, the second side surface 122 is inclined relative to the rotation center line of the first substrate 11, and the extension surface of the second side surface 122 passes through the center point of the first substrate 11, and the orthographic projection of the first boss 12 in the radial direction of the first substrate 11 is trapezoidal;

[0095] The second boss 22 further includes a fourth side surface 222 opposite to the third side surface 221 in the rotation direction of the second substrate 21, the fourth side surface 222 is inclined relative to the rotation center line of the second substrate 21, and the extension surface of the fourth side surface 222 passes through the center point of the second substrate 21, and the orthographic projection of the second boss 22 in the radial direction of the second substrate 21 is a trapezoid;

[0096] The fourth side surface 222 is suitable for being connected with the second side surface 122, and when the rotational resistance of the first joint 10 is greater than a preset value, if the fourth side surface 222 and the second side surface 122 slide relative to each other, the first side surface 121 is separated from the third side surface 221; if the first side surface 121 and the third side surface 221 slide relative to each other, the fourth side surface 222 and the second side surface 122 are separated.

[0097] In the above-mentioned embodiment, when the first joint 10 and the second joint 20 are connected in cooperation, the first side surface 121 is tightly attached to the third side surface 221, and when the first joint 10 and the second joint 20 are separated, the first side surface 121 and the third side surface 221 slide relative to each other, wherein the second joint 20 rotates in one direction (clockwise or counterclockwise).

[0098] In this embodiment, when the first joint 10 and the second joint 20 are connected, the second side surface 122 of one of the first bosses 12 is in close contact with the fourth side surface 222 of one of the second bosses 22, and the third side surface 221 of the same second boss 22 is in close contact with the first side surface 121 of another adjacent first boss 12, so that the first boss 12 and the second boss 22 are tightly in contact in both clockwise and counterclockwise rotation directions to avoid relative movement and collision and noise. When the first joint 10 and the second joint 20 move away from each other and the fourth side surface 222 of the second boss 22 slides relative to the second side surface 122 of the first boss 12, as the second boss 22 gradually withdraws from the first receiving groove 123, the fourth side surface 222 of the second boss 22 and the second side surface 122 of the adjacent first boss 12 are gradually separated.

[0099] In this embodiment, the fourth side surface 222 is inclined relative to the rotation center line of the second joint 20, and the second side surface 122 is inclined relative to the rotation center line of the first joint 10. The similar descriptions about the first side surface 121 and the third side surface 221 mentioned above can be referred to, and will not be repeated here. The angle between the fourth side surface 222 and the board surface of the second substrate 21, and the angle between the second side surface 122 and the board surface of the first substrate 11 can all refer to the angles between the first side surface 121, the third side surface 221 and the corresponding board surfaces mentioned above, and will not be repeated here. In this way, the second joint 20 can be rotated in two directions (clockwise and counterclockwise), one direction is that the first side surface 121 and the third side surface 221 are matched and connected and can slide relative to each other, and the other direction is that the second side surface 122 and the fourth side surface 222 are matched and connected and can slide relative to each other, thereby driving the first joint 10 to rotate in two directions, and the first joint 10 and the second joint 20 can be switched from a matched connection state to a separated state in both directions.

[0100] Optionally, in the radial orthographic projection of the first joint 10, the first boss 12 is an isosceles trapezoid, the first side surface 121 and the second side surface 122 are symmetrically arranged, and the angles between the first and second substrates 11 are equal. Correspondingly, in the radial orthographic projection of the second joint 20, the second boss 22 is an isosceles trapezoid, the third side surface 221 and the fourth side surface 222 are symmetrically arranged, and the angles between the second and second substrates 21 are equal. In this way, the force of the second joint 20 driving the first joint 10 to rotate in both directions can be equal, and the rotation resistance of the rotating member when the first joint 10 and the second joint 20 are separated is also equal.

[0101] In one embodiment, reference Figure 1 and Figure 2 The distances between two adjacent first bosses 12 among the plurality of first bosses 12 are not all equal or not all equal, and / or the sizes of the plurality of first bosses 12 in the rotation direction of the first substrate 11 are not all equal or not all equal.

[0102] The distances between two adjacent second bosses 22 among the plurality of second bosses 22 are not all equal or not all equal, and / or the sizes of the plurality of second bosses 22 in the rotation direction of the second substrate 21 are not all equal or not all equal.

[0103] The distance between two adjacent first bosses 12 is the size of the first receiving groove 123 in the annular direction, and the distance between two adjacent second bosses 22 is the size of the second receiving groove 223 in the annular direction.

[0104] Optionally, the sizes of the multiple first bosses 12 in the rotation direction of the first substrate 11 are not all equal. Since the first bosses 12 correspond to the second accommodating grooves 223, that is, when the first joint 10 and the second joint 20 are matingly connected, the first bosses 12 extend into the second accommodating grooves 223 and are tightly attached to the two adjacent second bosses 22, the sizes of the second accommodating grooves 223 in the rotation direction of the second substrate 21 are not all equal.

[0105] Optionally, the sizes of the multiple second bosses 22 in the rotation direction of the second substrate 21 are not all equal. Since the second bosses 22 correspond to the first accommodating grooves 123, that is, when the first joint 10 and the second joint 20 are matingly connected, the second bosses 22 extend into the first accommodating grooves 123 and are tightly attached to the two adjacent first bosses 12, the sizes of the first accommodating grooves 123 in the rotation direction of the first substrate 11 are not all equal.

[0106] The dimension limitation as in the above embodiment is set so that the first joint 10 and the second joint 20 are matingly connected at a specific position, that is, the second boss 22 is mated with the first receiving groove 123 of the same size, and the first boss 12 is mated with the second receiving groove 223 of the same size, rather than matingly connecting at any position, thereby ensuring the correct connection of the first joint 10 and the second joint 20.

[0107] In one embodiment, reference Figures 1 to 3 The side of the first substrate 11 facing away from the first boss 12 is connected to the working piece.

[0108] Specifically, the first substrate 11 is provided with a connection hole 111, and is connected and fixed to the workpiece by a fastener. Optionally, there may be multiple connection holes 111, which are provided in the annular space surrounded by multiple first bosses 12 and penetrate the first substrate 11. The fastener may be a screw, etc., without limitation. It is understandable that the first substrate 11 may also be connected to the workpiece by welding, gluing or integral molding, etc., which is not limited here.

[0109] Optional, reference Figures 1 to 3 The first substrate 11 is connected to the workpiece on one side facing away from the first boss 12, and the second substrate 21 is connected to the driving mechanism on one side facing away from the second boss 22. The second joint 20 is driven to rotate by the driving mechanism to drive the first joint 10 and the workpiece to rotate synchronously.

[0110] Optionally, a connecting rod 23 is provided on the side of the second substrate 21 facing away from the second boss 22. By providing the connecting rod 23, the connection between the second joint 20 and the driving mechanism can be conveniently performed.

[0111] The present utility model embodiment also provides an experimental device, including the clutch assembly 100 described in any one of the above embodiments. Optionally, the experimental device also includes a working piece and a driving mechanism, wherein the side of the first substrate 11 facing away from the first boss 12 is connected to the working piece, the side of the second substrate 21 facing away from the second boss 22 is connected to the driving mechanism, and the second joint 20 is driven to rotate by the driving mechanism to drive the first joint 10 and the working piece to rotate synchronously.

[0112] Optionally, when the experimental device is the powder dispensing device 1000 in the embodiment of the present invention (i.e., the clutch assembly 100 is applied to the powder dispensing device 1000), the working piece is the stirring rod 31 in the stirring structure 30 in the embodiment of the present invention, and the driving mechanism is the driving mechanism 50 in the driving device 300 in the embodiment of the present invention. When the clutch assembly 100 is applied to other devices, the working piece may be a scraper, a drill bit, etc., and the driving mechanism may be a motor, a cylinder, etc., without limitation.

[0113] Please refer to Figures 1 to 5 The embodiment of the utility model also provides a stirring structure 30, including a stirring rod 31 and a first joint 10, the first joint 10 includes a first substrate 11 and a first boss 12, the first boss 12 is arranged on the first substrate 11, and the first boss 12 deviates from the rotation center line of the first substrate 11, the side of the first substrate 11 facing away from the first boss 12 is connected to the stirring rod 31, the first boss 12 is suitable for being connected with the driving device 300 and driven to rotate, so as to drive the stirring rod 31 to rotate, and when the rotation resistance of the stirring rod 31 is greater than a preset value, the first boss 12 slides relative to and separates from the driving device 300.

[0114] Optionally, the first joint 10 is connected with the second joint 20 of the driving device 300, and the stirring rod 31 is suitable for stirring the powder in the powder barrel 200. As the stirring rod 31 stirs the powder, the powder is squeezed for a longer and longer time, and the powder is pressed more and more tightly, which will increase the rotation resistance of the stirring rod 31. In addition, the moisture of the powder will also increase the rotation resistance of the stirring rod 31. The specific value of the preset value of the rotation resistance of the stirring rod 31 corresponding to the separation of the first joint 10 and the second joint 20 is not limited and can be set as needed.

[0115] The first substrate 11 may be a flat plate, an arc plate, etc., without limitation. The orthographic projection of the first substrate 11 perpendicular to the plate surface may be a circular, rectangular, etc., without limitation. Figure 1 An embodiment is shown in which the first substrate 11 is substantially a flat plate, and the orthographic projection of the first substrate 11 perpendicular to the plate surface is a circle.

[0116] The first boss 12 is disposed on one of the surfaces of the first substrate 11 and protrudes from the surface. The first boss 12 is disposed close to the edge of the first substrate 11 and can be flush with the edge or have a certain distance therefrom without limitation.

[0117] There is no restriction on the way the first joint 10 and the second joint 20 are connected in cooperation. When the stirring resistance of the stirring rod 31 is less than or equal to a preset value, the first joint 10 and the second joint 20 maintain a state of cooperation and connection. At this time, the rotation of the second joint 20 can drive the first joint 10 to rotate, thereby achieving the purpose of driving the stirring rod 31 to rotate.

[0118] When the rotational resistance of the stirring rod 31 is greater than a preset value, the second joint 20 moves away from the first joint 10 and separates, or the first joint 10 moves away from the second joint 20 and separates, and the mating connection between the first joint 10 and the second joint 20 fails, so that the second joint 20 can no longer drive the first joint 10 to rotate, thereby stopping the stirring rod 31 from rotating to avoid overload.

[0119] After the compaction degree and moisture degree of the powder in the powder barrel 200 are adjusted so that the rotational resistance of the stirring rod 31 is less than or equal to the preset value when it rotates, the second joint 20 moves toward the first joint 10 or the first joint 10 moves toward the second joint 20 so that the second joint 20 is reconnected with the first joint 10, and the second joint 20 is rotated to drive the first joint 10 to rotate, thereby driving the stirring rod 31 to rotate and resume stirring and discharging the powder.

[0120] The first joint 10 is connected with the driving device 300, so that the driving device 300 can drive the first joint 10 to rotate, and then drive the stirring rod 31 to rotate. When the rotation resistance of the stirring rod 31 is greater than the preset value, the first joint 10 can slide relative to and separate from the driving device 300 to cut off the power transmission and avoid overload. It can protect the components and avoid structural damage.

[0121] Please refer to Figure 1 The rotation center line of the first substrate 11 is colinear with the rotation center line of the stirring rod 31 , and the first boss 12 extends along the rotation direction of the first substrate 11 .

[0122] Among them, the second joint 20 that is matched with the first boss 12 is provided with a second substrate 21 and a second boss 22, the rotation center line of the first substrate 11 is colinear with the rotation center line of the second substrate 21, and the second boss 22 extends along the rotation direction of the second substrate 21, so that when the rotation resistance of the stirring rod 31 is greater than a preset value, the second joint 20 is away from the first joint 10 and separated from the first joint 10, resulting in failure of the matching connection between the first joint 10 and the second joint 20, so that the second joint 20 can no longer drive the first joint 10 to rotate, thereby stopping the rotation of the stirring rod 31 to avoid overload.

[0123] By setting the rotation center line of the first substrate 11 to be colinear with the rotation center line of the stirring rod 31, the first boss 12 extends along the rotation direction of the first substrate 11, so that the stirring resistance exerted on the stirring rod 31 can be completely transmitted to the first joint 10, and when the rotation resistance of the stirring rod 31 is greater than a preset value, the first boss 12 can slide relative to and separate from the driving device 300 along the rotation direction of the first substrate 11 to cut off the power transmission and avoid overload, thereby protecting the components and avoiding structural damage, and this process will not cause motion interference to the rotation of the first joint 10 and the driving device 300.

[0124] Please refer to Figure 1 In the rotation direction of the first substrate 11 , the dimension of one end of the first boss 12 away from the first substrate 11 is smaller than the dimension of one end connected to the first substrate 11 .

[0125] The second boss 22 connected to the first boss 12 has a smaller size at one end of the second boss 22 away from the second substrate 21 than at the other end connected to the second substrate 21 in the rotation direction of the second joint 20 .

[0126] The first boss 12 and the second boss 22 are both in a shape of a small top and a large root, wherein the top is the end of the first boss 12 away from the first substrate 11 and the end of the second boss 22 away from the second substrate 21; the root is the end of the first boss 12 connected to the first substrate 11 and the end of the second boss 22 connected to the second substrate 21.

[0127] By setting it in the rotation direction of the first substrate 11, the size of the end of the first boss 12 away from the first substrate 11 is smaller than the size of the end connected to the first substrate 11, so that the part of the driving device 300 used for matching with the first boss 12 can extend into the annular space where the first boss 12 is located at a larger angle in the rotation direction, which can make it easier for the driving device 300 to achieve matching connection with the first boss 12. In addition, the structure with a small top and a large root is also more convenient for setting a matching structure for relative sliding of the first boss 12 and the driving device 300.

[0128] Please refer to Figure 1 The first boss 12 includes a first side surface 121 on one side of the rotation direction of the first substrate 11. The first side surface 121 is inclined relative to the rotation center line of the first substrate 11, and an extension surface of the first side surface 121 passes through the center point of the first substrate 11. The first side surface 121 is suitable for being connected with the driving device 300 and is suitable for sliding relative to the driving device 300 when the rotation resistance of the stirring rod 31 is greater than a preset value.

[0129] The first side surface 121 is inclined relative to the rotation center line of the first connector 10, that is, the first side surface 121 is neither parallel to the rotation center line nor perpendicular to the rotation center line, but has an inclined angle. It should be understood that the first side surface 121 does not directly intersect with the rotation center line of the first connector 10, but the extension surface of the first side surface 121 intersects with the rotation center line. From another perspective, the plate surface of the first substrate 11 where the first boss 12 is located is a plane, and the first side surface 121 has an inclined angle with the plane, and the structure that the top of the first boss 12 is small and the root is large must be satisfied.

[0130] Among them, the angle between the first side surface 121 and the plate surface of the first substrate 11 is not limited, and the specific range is, for example, 30°-60°, and specifically, 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc. Within this range of angle, the first boss 12 can be fully arranged with a sufficient axial height in a limited space to ensure the transmission matching connection effect, and the relative sliding between the first side surface 121 and the drive device 300 can be achieved when the rotation resistance is greater than a preset value. If the angle is less than 30°, a large space is required to arrange the first boss 12 with a sufficient axial height, which is likely to cause the product size to be too large and is not conducive to structural miniaturization. If the angle is greater than 60°, it may cause the first side surface 121 and the drive device 300 to be difficult to slide relative to each other, and it is easy to get stuck and the first connector 10 cannot be separated from the drive device 300.

[0131] By setting the first boss 12 to include a first side surface 121 on one side of the rotation direction of the first substrate 11, the first side surface 121 is inclined relative to the rotation center line of the first substrate 11, and the extension surface of the first side surface 121 passes through the center point of the first substrate 11, the first side surface 121 is suitable for being matched and connected with the driving device 300, and is suitable for sliding relative to the driving device 300 when the rotation resistance of the stirring rod 31 is greater than a preset value, so that the first boss 12 can have a sufficient axial height within a limited space, and is easy to be matched and connected with the driving device 300, and at the same time, when the stirring resistance of the stirring rod 31 is higher than a preset value, it can slide relative to and separate from the driving device 300 to cut off the power transmission and avoid overload, and can protect components and avoid structural damage, and this process will not cause motion interference to the rotation of the first joint 10 and the driving device 300.

[0132] Please refer to Figure 1 The first boss 12 also includes a second side surface 122 opposite to the first side surface 121 in the rotation direction of the first substrate 11. The second side surface 122 is inclined relative to the rotation center line of the first substrate 11, and the extension surface of the second side surface 122 passes through the center point of the first substrate 11. The radial projection of the first boss 12 on the first substrate 11 is trapezoidal.

[0133] Among them, the second side surface 122 is suitable for being connected with the driving device 300, and when the rotational resistance of the stirring rod 31 is greater than a preset value, if the first side surface 121 and the driving device 300 slide relative to each other, the second side surface 122 is separated from the driving device 300; if the second side surface 122 and the driving device 300 slide relative to each other, the first side surface 121 is separated from the driving device 300.

[0134] In this embodiment, the second side surface 122 is inclined relative to the rotation center line of the first connector 10. Please refer to the similar description about the first side surface 121 mentioned above, and no further details will be given here. The angle between the second side surface 122 and the first substrate 11 can refer to the angle between the first side surface 121 and the first substrate 11 mentioned above, and no further details will be given here. In this way, the first connector 10 can be rotated in two directions (clockwise and counterclockwise), one direction is that the first side surface 121 and the driving device 300 are connected in cooperation and can slide relative to each other, and the other direction is that the second side surface 122 and the driving device 300 are connected in cooperation and can slide relative to each other, and the first connector 10 and the driving device 300 can be switched from a connected state to a separated state in both directions.

[0135] Optionally, in the radial orthographic projection of the first joint 10, the first boss 12 is an isosceles trapezoid, and the first side surface 121 and the second side surface 122 are symmetrically arranged, and the angles between the first side surface 121 and the plate surface of the first substrate 11 are equal. In this way, the force of the driving device 300 driving the first joint 10 to rotate in both directions can be equal, and the rotation resistance of the rotating member when the first joint 10 and the driving device 300 are separated is also equal.

[0136] By setting the first boss 12 to also include a second side surface 122 opposite to the first side surface 121 in the rotation direction of the first substrate 11, the second side surface 122 is inclined relative to the rotation center line of the first substrate 11, and the extension surface of the second side surface 122 passes through the center point of the first substrate 11. The radial projection of the first boss 12 in the first substrate 11 is trapezoidal, so that the force of the driving device 300 to drive the first joint 10 to rotate in both directions is equal, and the rotational resistance of the rotating part when the first joint 10 and the driving device 300 are separated is also equal.

[0137] Please refer to Figure 1 There are multiple first bosses 12, and the multiple first bosses 12 are arranged in an annular direction on the first substrate 11. A first accommodating groove 123 is formed between two adjacent first bosses 12, and each first boss 12 and each first accommodating groove 123 are suitable for cooperating and connecting with the driving device 300.

[0138] The specific number of the first bosses 12 is not limited. Figure 1 The embodiment in which the number of the first bosses 12 is four is shown. The term "arranged in an annular direction" means that the first bosses 12 are arranged in an annular direction around the rotation center line of the first joint 10 , that is, arranged in an annular direction around the first joint 10 .

[0139] The plurality of first bosses 12 can be arranged at equal intervals along the annular direction, or at unequal intervals, without limitation. When the first joint 10 is connected with the drive device 300, the portion of the drive device 300 used for connecting with the first joint 10 corresponds to the first receiving groove 123 and extends into it, so that the first side surface 121 or the second side surface 122 of the first boss 12 can contact with the drive device 300 to achieve a connecting connection; after the first joint 10 is separated from the drive device 300, the portion of the drive device 300 used for connecting with the first joint 10 withdraws from the first receiving groove 123, and the drive device 300 idles without transmitting power to the first joint 10.

[0140] Please refer to Figure 1 The distances between two adjacent first bosses 12 among the plurality of first bosses 12 are not all equal or not all equal, and / or the sizes of the plurality of first bosses 12 in the rotation direction of the first substrate 11 are not all equal or not all equal.

[0141] The dimension limitation of the above embodiment is set so that the first connector 10 and the drive device 300 are matched and connected at a specific position rather than at any position, which can ensure the correct connection between the first connector 10 and the drive device 300 and play a fool-proof role.

[0142] In one embodiment, please refer to Figure 3 and Figure 4 The stirring rod 31 includes a transmission shaft 311 and a rod body 312 , one end of the transmission shaft 311 is connected to the first substrate 11 , and the other end is connected to the rod body 312 .

[0143] Among them, the rod body 312 is used to extend into the barrel body 40 of the powder barrel 200, and is suitable for controlling the opening of the powder outlet 401. The rod body 312 is generally a straight rod, and may be provided with a powder outlet head 3122, the powder outlet head 3122 corresponds to the powder outlet 401 of the barrel body 40, and the powder outlet head 3122 is used to block the powder outlet 401 or control the opening size (i.e., the opening) of the powder outlet 401 to stop the powder outlet or control the speed of the powder outlet. The specific structure of the powder outlet head 3122 is not limited. The stirring rod 31 also includes a stirring blade 313, which is connected to the rod body 312 and is used to stir the powder in the barrel body 40.

[0144] In one embodiment, please refer to Figure 3 The stirring rod 31 further includes an elastic component 314 . A receiving groove 3111 is formed at one end of the transmission shaft 311 facing away from the first substrate 11 . The elastic component 314 is fixed in the receiving groove 3111 and elastically connected to the rod body 312 .

[0145] Optionally, the elastic assembly 314 includes a first elastic member 3141 and an abutting rod 3142. The bottom wall of the receiving groove 3111 is provided with a mounting groove 3113, and the abutting rod 3142 extends into the mounting groove 3113. The first elastic member 3141 is received in the mounting groove 3113 and elastically abuts against the bottom wall of the mounting groove 3113 and the abutting rod 3142. One end of the rod body 312 is received in the receiving groove 3111, and one end of the abutting rod 3142 away from the first elastic member 3141 abuts against the rod body 312.

[0146] The first elastic member 3141 is, for example, a spring, a shrapnel, etc., without limitation. The depth directions of the receiving groove 3111 and the mounting groove 3113 are both axial directions of the stirring rod 31, that is, the extension direction of the rotation centerline of the first joint 10. The rod body 312 and the transmission shaft 311 are relatively fixed in the circumferential direction of the stirring rod 31 and can move relatively in the axial direction. The abutment rod 3142 always abuts against the rod body 312. When the rod body 312 is subjected to the upward extrusion force of the powder, the first elastic member 3141 and the abutment rod 3142 cooperate and provide a reverse elastic tension to the rod body 312, so that the rod body 312 moves toward the powder outlet 401 and the powder outlet head 3122 fits with the powder outlet 401, so as to avoid a gap between the powder outlet head 3122 and the powder outlet 401 and affect the powder outlet accuracy.

[0147] One end of the rod body 312 is received in the receiving groove 3111, and the abutting rod 3142 abuts against the rod body 312. The rod body 312 rotates in the barrel body 40, driving the stirring blade 313 to stir the powder. During the stirring process, the rod body 312 is subjected to the stirring resistance and moves toward the bottom wall of the receiving groove 3111. The abutting force provided to the rod body 312 by the abutting rod 3142 makes the rod body 312 have a tendency to move away from the bottom wall of the receiving groove 3111, that is, the first elastic member 3141 applies continuous downward pressure to the rod body 312 through the abutting rod 3142, thereby being able to offset the axial force applied to the stirring rod 31 during rotation, so as to maintain the stirring action of the powder and protect the stability of the components.

[0148] When the stirring resistance of the rod body 312 is greater than a preset value, the rod body 312 and the stirring blade 313 are engulfed by the powder and cannot rotate any more, thereby making the transmission shaft 311 unable to rotate.

[0149] Optionally, the elastic component 314 can be a spring plunger, which is interference fit with the transmission shaft 311 , that is, the spring plunger is interference connected with the inner wall of the receiving groove 3111 , and the movable end of the spring plunger is elastically connected to the rod body 312 .

[0150] By setting the elastic component 314, the rod body 312 has a tendency to move away from the bottom wall of the receiving groove 3111, that is, the rod body 312 always has a tendency to press downward, so that the powder is squeezed toward the powder outlet 401 to achieve discharge. The elastic component 314 also plays a buffering role and can protect the rod body 312 and the stirring blade 313.

[0151] Please refer to Figure 3 and Figure 4A first matching portion 3112 is provided on the side wall of the receiving groove 3111, and a second matching portion 3121 is provided on the outer peripheral surface at the end of the rod body 312. The first matching portion 3112 and the second matching portion 3121 are matched and connected so that the rod body 312 and the transmission shaft 311 are movable in the axial direction and relatively fixed in the circumferential direction.

[0152] One of the first matching portion 3112 and the second matching portion 3121 is a protrusion, and the other is a groove. Exemplarily, the first matching portion 3112 is a groove provided on the side wall of the receiving groove 3111, and the extension direction of the groove is the axial direction of the stirring rod 31, and the second matching portion 3121 is a protrusion provided on the outer peripheral surface of the rod body 312, and the protrusion extends into the groove, so that the rod body 312 and the transmission shaft 311 can move in the axial direction and are relatively fixed in the circumferential direction.

[0153] Optionally, the first matching portion 3112 is a groove opened on the side wall of the receiving groove 3111, and the groove does not penetrate to the end face of the transmission shaft 311 facing away from the first joint 10, but is at a certain distance from the end face, so that the protrusion of the second matching portion 3121 of the rod body 312 will not be separated from the transmission shaft 311 at the position farthest from the bottom wall of the receiving groove 3111, so that the rod body 312 will not be separated from the transmission shaft 311, ensuring that the rod body 312 is always matched with the receiving groove 3111.

[0154] Optionally, the first matching portion 3112 is a groove formed on the side wall of the receiving groove 3111 , and the groove extends through the end surface of the transmission shaft 311 facing away from the first joint 10 , so as to be more conveniently matched and connected with the protrusion of the second matching portion 3121 .

[0155] Alternatively, the cross-sectional shapes of the receiving groove 3111 and the end of the rod body 312 extending into the receiving groove 3111 are both non-circular, so that the rod body 312 and the transmission shaft 311 can slide relative to each other in the axial direction and be relatively fixed in the circumferential direction.

[0156] Please refer to Figures 1 to 5 The embodiment of the utility model further provides a powder barrel 200, comprising a barrel body 40, a cover body 41 and a stirring structure 30 in the embodiment of the utility model, the barrel body 40 has a relative powder outlet 401 and a cover opening 402, the cover body 41 is covered on the cover opening 402, the stirring rod 31 of the stirring structure 30 is rotatably connected to the cover body 41, and the stirring rod 31 is suitable for controlling the opening of the powder outlet 401.

[0157] The barrel 40 is used to store and discharge powder, and its specific shape and structure are not limited. The cover 41 is closely attached to the inner wall of the barrel 40 at the cover opening 402, and the orthographic projection shapes of the cover 41 and the cover opening 402 in the axial direction of the stirring rod 31 are both non-circular, so that the cover 41 and the barrel 40 can be relatively fixed in the circumferential direction of the stirring rod 31 through the non-circular shape. A clamping structure, a plunger structure, etc. can also be provided between the cover 41 and the barrel 40, so that the cover 41 and the barrel 40 can be relatively fixed in the axial direction of the stirring rod 31 and can be quickly loaded and unloaded.

[0158] Please refer to Figure 3 The powder barrel 200 further includes a bearing 42. The cover body 41 is provided with a mounting hole 411. The bearing 42 is fixedly arranged in the mounting hole 411. The stirring rod 31 includes a transmission shaft 311 and a rod body 312. The transmission shaft 311 is passed through the mounting hole 411 and is rotatably connected to the bearing 42. One end of the transmission shaft 311 is connected to the first substrate 11 of the stirring structure 30, and the other end is connected to the rod body 312. The rod body 312 is accommodated in the barrel body 40 and is suitable for controlling the opening of the powder outlet 401.

[0159] Specifically, two bearings 42 are arranged at intervals in the axial direction of the transmission shaft 311, the inner ring of the bearing 42 is sleeved on the transmission shaft 311, and the outer ring is interference-fitted with the inner circumferential wall of the mounting hole 411. In addition, the bearing 42 can be limited in the axial direction of the stirring rod 31 by the cover body 41, the transmission shaft 311 and the first substrate 11, so that the transmission shaft 311 and the cover body 41 can be relatively fixed in the axial direction of the stirring rod 31 and can rotate relatively in the circumferential direction.

[0160] The cover body 41 may further be provided with a powder adding port 412 , which is spaced apart from the mounting hole 411 , and is used for adding powder into the barrel body 40 .

[0161] It is understandable that, in addition to being applied to the above-mentioned powder barrel 200, the stirring structure 30 can also be used in other devices to meet specific functional requirements. For example, the stirring structure 30 can be applied to a mechanical stirring device to achieve stirring of the solution, which is not limited here.

[0162] Please refer to Figures 1 to 5The embodiment of the utility model provides a driving device 300, which is suitable for driving the stirring structure 30 in the embodiment of the utility model to rotate. The driving device 300 includes a driving mechanism 50 and a second joint 20. The second joint 20 includes a second substrate 21 and a second boss 22. The second boss 22 is arranged on the second substrate 21, and the second boss 22 deviates from the rotation center line of the second substrate 21; the side of the second substrate 21 facing away from the second boss 22 is connected to the driving mechanism 50, and the driving mechanism 50 is suitable for driving the second joint 20 to rotate; the second boss 22 is suitable for cooperating and connecting with the first boss 12 of the stirring structure 30 to drive the stirring rod 31 of the stirring structure 30 to rotate; when the stirring resistance of the stirring rod 31 is greater than a preset value, the second boss 22 slides relative to the first boss 12 and separates.

[0163] The driving mechanism 50 is, for example, a motor. When the powder dispensing device 1000 is working, the driving mechanism 50 is suitable for driving the second joint 20 to rotate, the second joint 20 drives the first joint 10 to rotate, and then drives the stirring rod 31 to rotate, the stirring rod 31 stirs the powder in the powder barrel 200 and controls the powder to be quantitatively discharged from the powder outlet 401 of the powder barrel 200 to the charging container, so as to achieve powder distribution.

[0164] The second joint 20 is suitable for connecting with the driving mechanism 50, and the first joint 10 is suitable for connecting with the stirring rod 31. The way in which the first joint 10 and the second joint 20 are matched and connected is not limited. When the stirring resistance of the stirring rod 31 is less than or equal to a preset value, the first joint 10 and the second joint 20 maintain a matched connection state. At this time, the rotation of the second joint 20 can drive the first joint 10 to rotate, thereby achieving the purpose of driving the stirring rod 31 to rotate.

[0165] When the stirring resistance of the stirring rod 31 is greater than a preset value, the second joint 20 moves away from the first joint 10 and separates from the first joint 10, causing the matching connection between the first joint 10 and the second joint 20 to fail, so that the second joint 20 can no longer drive the first joint 10 to rotate, thereby stopping the stirring rod 31 from rotating to avoid overload.

[0166] The second substrate 21 can be a flat plate, an arc plate, etc., without limitation. The orthographic projection of the second substrate 21 perpendicular to the plate surface can be a circular, rectangular, etc., without limitation. Figure 2 The embodiment is shown in which the second substrate 21 is substantially a flat plate, and the orthographic projection of the second substrate 21 perpendicular to the plate surface is a circle.

[0167] The rotation centerline of the second joint 20 passes through the geometric center of the second substrate 21 and is perpendicular to its surface. The rotation centerline of the first joint 10 passes through the geometric center of the first substrate 11 and is perpendicular to its surface. The rotation centerline of the second joint 20 coincides with the rotation centerline of the first joint 10.

[0168] The second boss 22 is disposed on one of the surfaces of the second substrate 21 and protrudes from the surface. The second boss 22 is disposed close to the edge of the second substrate 21 and can be flush with the edge or have a certain distance therefrom without limitation.

[0169] When the first boss 12 and the second boss 22 are connected in cooperation, the second substrate 21 and the first substrate 11 are close to each other, and the first boss 12 and the second boss 22 are in contact with each other in the rotation direction (i.e., circumferential direction) of the second joint 20. The rotation of the second boss 22 drives the first boss 12 to rotate, so that the second joint 20 can drive the first joint 10 to rotate.

[0170] When the stirring resistance of the stirring rod 31 is greater than a preset value, the second boss 22 slides relative to the first boss 12, the axial position of the first boss 12 remains unchanged, and the second substrate 21 gradually moves away from the first substrate 11 until the second boss 22 is separated from the first boss 12. At this time, the second boss 22 is no longer in contact with the first boss 12 in the circumferential direction, and the second boss 22 can no longer drive the first boss 12 to rotate, thereby cutting off power transmission.

[0171] The relative sliding of the first boss 12 and the second boss 22 may be in any form as long as the second substrate 21 and the first substrate 11 can be gradually moved away from each other until the second boss 22 is separated from the first boss 12 .

[0172] It should be noted that when the stirring resistance of the stirring rod 31 is less than or equal to the preset value, when the stirring resistance is relatively small, the second substrate 21 and the first substrate 11 are closest to each other, and the circumferential overlapping area of ​​the first boss 12 and the second boss 22 is the largest.

[0173] In one case, when the stirring resistance increases a little but does not exceed the preset value, the second substrate 21 and the first substrate 11 can be slightly away from each other relative to the closest state, that is, the first boss 12 and the second boss 22 can have a certain relative sliding, but have not yet separated from each other. At this time, the area where the first boss 12 and the second boss 22 overlap in the circumferential direction is reduced, but the second boss 22 can still transmit power to the first boss 12. In other words, the separation of the second boss 22 from the first boss 12 is not instantaneous, but as the stirring resistance increases, the area where the first boss 12 and the second boss 22 are connected to each other gradually decreases until the connection is released when they are separated from each other.

[0174] In another case, in all cases where the stirring resistance of the stirring rod 31 is less than or equal to the preset value, the first boss 12 and the second boss 22 always maintain the same mating connection area, and the first boss 12 and the second boss 22 do not slide relative to each other. When the stirring resistance is greater than the preset value, at this moment the second boss 22 quickly slides relative to the first boss 12 and separates from each other.

[0175] Arranging the first boss 12 and the second boss 22 to deviate from the rotation center line can increase the moment, reduce the local force, and be beneficial to the protection of components.

[0176] The driving device 300 provided by the utility model adopts a driving mechanism 50 and a second joint 20. The driving mechanism 50 is used to drive the second joint 20 to rotate. The second joint 20 is used to cooperate with the first joint 10, so that the second joint 20 can drive the first joint 10 to rotate, and then drive the stirring rod 31 to rotate. When the stirring resistance of the stirring rod 31 is greater than a preset value, the first joint 10 moves away from the second joint 20 and separates from it to cut off the transmission of power, avoid overload, and protect components.

[0177] refer to Figure 3 and Figure 5 The driving mechanism 50 includes a driving member 51 and a transmission assembly 52, wherein the driving member 51 is connected to the transmission assembly 52, and the second joint 20 is connected to the transmission assembly 52. ​​The transmission assembly 52 includes a speed change mechanism 521 and a transmission rod 522, wherein the speed change mechanism 521 is connected to the driving member 51, one end of the transmission rod 522 is connected to the speed change mechanism 521, and the other end is connected to the second joint 20, and the driving member 51 drives the transmission rod 522 to rotate through the speed change mechanism 521, thereby driving the second joint 20 to rotate. The second joint 20 and the transmission assembly 52 can be slidably connected in the direction of the rotation center line of the second joint 20, that is, the second joint 20 and the transmission rod 522 are slidably connected in the direction of the rotation center line of the second joint 20.

[0178] The driving member 51 is, for example, a motor. The transmission assembly 52 can be any feasible transmission mechanism, such as gear transmission, synchronous belt transmission, etc., without limitation. The second joint 20 and the transmission assembly 52 are relatively fixed in the circumferential direction of the second joint 20, and can move relatively in the axial direction. The driving member 51 outputs power to the transmission assembly 52, and the transmission assembly 52 then drives the second joint 20 to rotate. At the same time, when the rotational resistance of the stirring rod 31 is greater than a preset value, the second joint 20 moves away from the first joint 10 and moves axially relative to the transmission assembly 52, thereby separating from the first joint 10 to cut off the transmission of power, protect components, and avoid overload.

[0179] The speed change mechanism 521 may include a gear set, and the gear set may include a plurality of gears. For example, Figure 3 and Figure 5It is shown that the gear set includes a first gear 5211 and a second gear 5212, the diameter of the first gear 5211 is smaller than the diameter of the second gear 5212, the first gear 5211 is connected to the driving member 51, and the second gear 5212 is meshed with the first gear 5211, so that the high-speed and low-torque output of the driving member 51 can be converted into the low-speed and high-torque output of the second gear 5212. The driving member 51 drives the transmission rod 522 to rotate through the speed change mechanism 521, and then drives the second joint 20 to rotate, which can drive the stirring rod 31 with a greater torque requirement to rotate, so as to achieve the stirring and discharging of a larger amount of powder with greater stirring resistance. It can be understood that the speed change mechanism 521 can realize speed reduction transmission, same speed transmission or speed increase transmission, and can be set according to actual application requirements without limitation.

[0180] Optionally, the rotation axis of the output shaft of the motor of the driving member 51, the rotation axis of the first gear 5211, the rotation axis of the second gear 5212, the extension direction of the transmission rod 522, the rotation axis of the second joint 20, the rotation axis of the first joint 10 and the rotation axis of the stirring rod 31 are arranged parallel to each other. In this way, the transmission is stable, the structure is relatively simple and the cost is low.

[0181] Please refer to Figure 3 The second joint 20 further includes a connecting rod 23, which is connected to the surface of the second substrate 21 facing away from the second boss 22. The driving mechanism 50 further includes a connecting plate 53, a sliding block 55 and a second elastic member 54. The sliding block 55 is slidably disposed on the transmission rod 522. One end of the transmission rod 522 facing away from the speed change mechanism 521 is fixedly connected to the connecting plate 53. The connecting plate 53 is provided with a transmission hole 531. The connecting rod 23 is passed through the transmission hole 531 and is fixedly connected to the sliding block 55. The connecting rod 23 and the connecting plate 53 are relatively fixed in the circumferential direction. The second elastic member 54 elastically abuts against the connecting plate 53 and the second substrate 21.

[0182] The second elastic member 54 can be a spring, a spring sheet, a rubber sleeve, a rubber block, etc., without limitation. When the second elastic member 54 is a spring, it can be sleeved on the connecting rod 23, and one end thereof elastically abuts against the connecting plate 53, and the other end thereof elastically abuts against the second substrate 21. The second elastic member 54 is always in a compressed state, and the compression degree of the second elastic member 54 increases when the second connector 20 changes from being connected to being separated from the first connector 10.

[0183] A second elastic member 54 is provided. Under the action of the elastic tension of the second elastic member 54, the second joint 20 tends to move toward the first joint 10, so that the second joint 20 and the first joint 10 maintain a mating connection state, and when the second joint 20 and the first joint 10 are separated and re-mated, the second joint 20 acts as a power source, and the second joint 20 can be re-mated with the first joint 10 without additional power to drive the second joint 20 to move axially.

[0184] At the same time, the sliding block 55 is connected and fixed to the connecting rod 23, so that when the length of the connecting rod 23 is long, it is not easy to vibrate and deviate under the restriction of the sliding block 55, thereby improving the transmission stability.

[0185] Please refer to Figure 3 There are multiple transmission rods 522, which are arranged at intervals, the rotation center line of the connecting rod 23 is collinear with the rotation center line of the second substrate 21, and the multiple transmission rods 522 revolve around the rotation center line of the second substrate 21; or, there are multiple connecting rods 23, which are arranged at intervals; the rotation center line of the transmission rod 522 is collinear with the rotation center line of the second substrate 21, and the multiple connecting rods 23 revolve around the rotation center line of the second substrate 21.

[0186] Optionally, multiple transmission rods 522 are parallel to each other and spaced apart, and one end of the multiple transmission rods 522 is connected and fixed to the second gear 5212 of the speed change mechanism 521, wherein the second gear 5212 can be directly connected to the multiple transmission rods 522, and the second gear 5212 can also be sleeved on the mounting seat 5213, and the multiple transmission rods 522 are connected and fixed to the mounting seat 5213. One end of the multiple transmission rods 522 away from the second gear 5212 is connected and fixed to the connecting plate 53, and the specific connection methods such as screw connection, riveting, and clamping can be adopted without limitation. Exemplarily, there are two transmission rods 522, and the two transmission rods 522 are symmetrically arranged relative to the rotation center line of the connecting rod 23 to improve the transmission stability. Optionally, the setting method of the multiple connecting rods 23 is similar to the setting method of the multiple transmission rods 522, and reference can be made thereto without further description.

[0187] Optionally, the transmission hole 531 is a non-circular hole, the cross-sectional shape of the connecting rod 23 is non-circular, the non-circular shape and size of the transmission hole 531 are the same as the non-circular shape and size of the cross-sectional shape of the connecting rod 23, and the specific non-circular shape can be any form such as an ellipse, a polygon, etc., without limitation. In this way, the second joint 20 and the connecting plate 53 are relatively fixed in the circumferential direction of the second joint 20, and can move relatively in the axial direction. The driving member 51 can drive the second joint 20 to rotate through the speed change mechanism 521, multiple transmission rods 522 and the connecting plate 53. At the same time, the second joint 20 can move axially relative to the connecting plate 53 to achieve the matching connection and separation of the second joint 20 and the first joint 10. The structure is simple and the cost is low.

[0188] Optionally, the through hole on the sliding block 55 for passing the transmission rod 522 can be a non-circular hole, and accordingly, the cross-sectional shape of the transmission rod 522 is also non-circular to match the through hole, so that the second joint 20 and the connecting plate 53 can be relatively fixed in the circumferential direction of the second joint 20 and can be relatively moved in the axial direction.

[0189] Please refer to Figure 3 and Figure 5 The driving device 300 also includes a detector 60, which is arranged on one side of the transmission rod 522. The detector 60 is suitable for detecting the position of the sliding block 55 to determine the connection state of the second joint 20 and the first joint 10, and alarming when the second joint 20 is separated from the first joint 10.

[0190] The sliding block 55 can be slidably connected with a plurality of transmission rods 522, and can move in the extension direction of the transmission rod 522. The sliding block 55 is connected to the end of the connecting plate 53 away from the second substrate 21, and the connection method can be screw connection, riveting, clamping, etc., without limitation. Since the second joint 20 can move in the axial direction, it can drive the sliding block 55 to move on the transmission rod 522, and the detector 60 can detect the position of the sliding block 55, so that the position of the second joint 20 can be determined according to the position of the sliding block 55, and then the position of the second joint 20 relative to the first joint 10 can be determined, and it can be judged whether the second joint 20 is matched or separated. It should be understood that the specific structure of the detector 60 and the sliding block 55 is not limited, and the specific principle of the detector 60 detecting the position of the sliding block 55 is not limited, and the commonly used position detection scheme can be referred to. The detector 60 can be a sensor, such as a laser sensor, an infrared sensor, etc., without limitation.

[0191] Optionally, a metal sheet may be provided on the sliding block 55 , and the detector 60 is suitable for detecting the position of the metal sheet.

[0192] When the position of the sliding block 55 detected by the detector 60 determines that the second connector 20 and the first connector 10 are separated, an alarm can be sounded to remind the user, and the user can take emergency shutdown operations according to the alarm. The specific form of the alarm can be sound, light, vibration, etc., without limitation.

[0193] Please refer to Figure 1 and Figure 2 The second boss 22 extends along the rotation direction of the second substrate 21 . In the rotation direction of the second substrate 21 , the size of one end of the second boss 22 away from the second substrate 21 is smaller than the size of the other end connected to the second substrate 21 .

[0194] The first boss 12 and the second boss 22 are both in a shape of a small top and a large root, wherein the top is the end of the first boss 12 away from the first substrate 11 and the end of the second boss 22 away from the second substrate 21; the root is the end of the first boss 12 connected to the first substrate 11 and the end of the second boss 22 connected to the second substrate 21.

[0195] When the first joint 10 and the second joint 20 are switched from the separated state to the mating connection state, the second joint 20 moves toward the first joint 10, and the structure of the first boss 12 and the second boss 22 is set as above, the top is small and the root is large, and the second boss 22 has a larger angle in the rotation direction to extend into the annular space where the first boss 12 is located, which can make it easier for the second boss 22 to be matingly connected with the first boss 12. In addition, the structure with a small top and a large root is also more convenient for setting a mating structure in which the first boss 12 and the second boss 22 slide relative to each other.

[0196] Please refer to Figure 1 and Figure 2 The second boss 22 includes a third side surface 221 on one side in the rotation direction of the second substrate 21. The third side surface 221 is inclined relative to the rotation center line of the second substrate 21, and an extension surface of the third side surface 221 passes through the center point of the second substrate 21. The third side surface 221 is suitable for being matched and connected with the first boss 12 and sliding relatively when the rotation resistance of the stirring rod 31 is greater than a preset value.

[0197] The third side surface 221 is inclined relative to the rotation center line of the second joint 20, that is, the third side surface 221 is neither parallel to the rotation center line nor perpendicular to the rotation center line, but has an inclined angle. It should be understood that the third side surface 221 does not directly intersect with the rotation center line of the second joint 20, but the extended surface of the third side surface 221 intersects with the rotation center line. From another perspective, the plate surface of the second substrate 21 where the second boss 22 is located is a plane, and the third side surface 221 has an inclined angle with the plane, and the structure of the second boss 22 having a small top and a large root must be satisfied.

[0198] When the first joint 10 is connected with the second joint 20, the third side surface 221 is in close contact with the first side surface 121, and the second joint 20 rotates in one direction around its own rotation center line, and the third side surface 221 and the first side surface 121 are kept in close contact, so that the second boss 22 pushes the first boss 12 to rotate in the same direction. The first side surface 121 and the third side surface 221 are in close contact and achieve surface contact, which can transmit greater torque, avoid local force concentration, make the connection more stable, stabilize the rotation process, reduce noise, and avoid damage due to excessive local force.

[0199] When the rotation resistance of the first joint 10 is greater than a preset value, the rotation resistance of the first joint 10 restricts the first joint 10 from rotating, and during the continued rotation of the second joint 20, the third side surface 221 slides on the first side surface 121 until the second boss 22 is separated from the first boss 12. The surface contact between the first side surface 121 and the third side surface 221 allows the two to slide relatively smoothly without getting stuck at a local position and being unable to slide relative to each other.

[0200] Among them, the angle between the third side surface 221 and the plate surface of the second substrate 21 is not limited, and the specific range is, for example, 30°-60°, and specifically, 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc. Within this range of angle, the first boss 12 and the second boss 22 can be fully arranged in a limited space with sufficient axial height to ensure the transmission matching connection effect, and the relative sliding between the third side surface 221 and the first side surface 121 can be achieved when the rotation resistance is greater than a preset value. If the angle is less than 30°, a large space is required to arrange the first boss 12 and the second boss 22 with sufficient axial height, which is likely to cause the product size to be too large and is not conducive to structural miniaturization. If the angle is greater than 60°, it may cause the first side surface 121 and the third side surface 221 to be difficult to slide relative to each other, and it is easy to get stuck and the first joint 10 and the second joint 20 cannot be separated.

[0201] The surface of the first substrate 11 facing the second substrate 21 is a plane, and the surface of the second substrate 21 facing the first substrate 11 is a plane, and when the two planes are parallel, the angle between the third side surface 221 and the surface of the second substrate 21 is equal to the angle between the first side surface 121 and the surface of the first substrate 11, thereby achieving close contact between the first side surface 121 and the third side surface 221.

[0202] Please refer to Figure 1 and Figure 2 There are multiple second bosses 22, and the multiple second bosses 22 are arranged in an annular direction on the second substrate 21. A second accommodating groove 223 is formed between two adjacent second bosses 22, and each second boss 22 and each second accommodating groove 223 are suitable for cooperating and connecting with the first joint 10 of the stirring structure 30.

[0203] The specific number of the first boss 12 and the second boss 22 is not limited. Figure 1 and Figure 2 The embodiment in which the number of the first bosses 12 and the number of the second bosses 22 are both 4 is shown. Circumferential spacing means spacing around the rotational centerline of the first joint 10 and the second joint 20 , that is, spacing around the circumferential direction of the first joint 10 and the second joint 20 .

[0204] Multiple first bosses 12 can be arranged at equal intervals along the annular direction, or can be arranged at unequal intervals, without limitation. Multiple second bosses 22 are also arranged in a similar manner and will not be described in detail. When the first joint 10 is matingly connected with the second joint 20, the second boss 22 corresponds to and extends into the first receiving groove 123, and the first boss 12 corresponds to and extends into the second receiving groove 223, so that the third side surface 221 of the second boss 22 can contact the first side surface 121 of the first boss 12 to achieve mating connection; after the first joint 10 is separated from the second joint 20, the second boss 22 withdraws from the first receiving groove 123, and the first boss 12 withdraws from the second receiving groove 223, and the driving mechanism 50 drives the second joint 20 to idle, and does not transmit power to the first joint 10.

[0205] Please refer to Figure 1 and Figure 2 The second boss 22 also includes a fourth side surface 222 opposite to the third side surface 221 in the rotation direction of the second substrate 21. The fourth side surface 222 is inclined relative to the rotation center line of the second substrate 21, and the extension surface of the fourth side surface 222 passes through the center point of the second substrate 21. The radial projection of the second boss 22 in the second substrate 21 is trapezoidal. The fourth side surface 222 is suitable for being connected with the first boss 12, and when the rotation resistance of the stirring rod 31 is greater than a preset value, if the third side surface 221 and the first boss 12 slide relative to each other, the fourth side surface 222 is separated from the first boss 12, and if the fourth side surface 222 and the first boss 12 slide relative to each other, the third side surface 221 is separated from the first boss 12.

[0206] In the above-mentioned embodiment, when the first joint 10 and the second joint 20 are connected in cooperation, the first side surface 121 is tightly attached to the third side surface 221, and when the first joint 10 and the second joint 20 are separated, the first side surface 121 and the third side surface 221 slide relative to each other, wherein the second joint 20 rotates in one direction (clockwise or counterclockwise).

[0207] In this embodiment, when the first joint 10 and the second joint 20 are connected, the second side surface 122 of one of the first bosses 12 is in close contact with the fourth side surface 222 of one of the second bosses 22, and the third side surface 221 of the same second boss 22 is in close contact with the first side surface 121 of another adjacent first boss 12, so that the first boss 12 and the second boss 22 are tightly in contact in both clockwise and counterclockwise rotation directions to avoid relative movement and collision and noise. When the first joint 10 and the second joint 20 move away from each other and the fourth side surface 222 of the second boss 22 slides relative to the second side surface 122 of the first boss 12, as the second boss 22 gradually withdraws from the first receiving groove 123, the fourth side surface 222 of the second boss 22 and the second side surface 122 of the adjacent first boss 12 are gradually separated.

[0208] In this embodiment, the fourth side surface 222 is inclined relative to the rotation center line of the second joint 20, and the second side surface 122 is inclined relative to the rotation center line of the first joint 10. The similar descriptions about the first side surface 121 and the third side surface 221 mentioned above can be referred to, and will not be repeated here. The angle between the fourth side surface 222 and the board surface of the second substrate 21, and the angle between the second side surface 122 and the board surface of the first substrate 11 can all refer to the angles between the first side surface 121, the third side surface 221 and the corresponding board surfaces mentioned above, and will not be repeated here. In this way, the second joint 20 can be rotated in two directions (clockwise and counterclockwise), one direction is that the first side surface 121 and the third side surface 221 are matched and connected and can slide relative to each other, and the other direction is that the second side surface 122 and the fourth side surface 222 are matched and connected and can slide relative to each other, thereby driving the first joint 10 to rotate in two directions, and the first joint 10 and the second joint 20 can be switched from a matched connection state to a separated state in both directions.

[0209] Optionally, in the radial orthographic projection of the first joint 10, the first boss 12 is an isosceles trapezoid, the first side surface 121 and the second side surface 122 are symmetrically arranged, and the angles between the first and second substrates 11 are equal. Correspondingly, in the radial orthographic projection of the second joint 20, the second boss 22 is an isosceles trapezoid, the third side surface 221 and the fourth side surface 222 are symmetrically arranged, and the angles between the second and second substrates 21 are equal. In this way, the force of the second joint 20 driving the first joint 10 to rotate in both directions can be equal, and the rotation resistance of the rotating member when the first joint 10 and the second joint 20 are separated is also equal.

[0210] Please refer to Figure 1 and Figure 2 The distances between two adjacent second bosses 22 among the plurality of second bosses 22 are not all equal or not all equal, and / or the sizes of the plurality of second bosses 22 in the rotation direction of the second substrate 21 are not all equal or not all equal.

[0211] The distance between two adjacent first bosses 12 is the size of the first receiving groove 123 in the annular direction, and the distance between two adjacent second bosses 22 is the size of the second receiving groove 223 in the annular direction.

[0212] Optionally, the sizes of the multiple first bosses 12 in the rotation direction of the first substrate 11 are not all equal. Since the first bosses 12 correspond to the second accommodating grooves 223, that is, when the first joint 10 and the second joint 20 are matingly connected, the first bosses 12 extend into the second accommodating grooves 223 and are tightly attached to the two adjacent second bosses 22, the sizes of the second accommodating grooves 223 in the rotation direction of the second substrate 21 are not all equal.

[0213] Optionally, the sizes of the multiple second bosses 22 in the rotation direction of the second substrate 21 are not all equal. Since the second bosses 22 correspond to the first accommodating grooves 123, that is, when the first joint 10 and the second joint 20 are matingly connected, the second bosses 22 extend into the first accommodating grooves 123 and are tightly attached to the two adjacent first bosses 12, the sizes of the first accommodating grooves 123 in the rotation direction of the first substrate 11 are not all equal.

[0214] The size limitation of the above embodiment is set so that the first joint 10 and the second joint 20 can be matched and connected at a specific position, that is, the second boss 22 is matched with the first receiving groove 123 of the same size, and the first boss 12 is matched with the second receiving groove 223 of the same size, rather than being matched and connected at any position, which can ensure the correct connection of the first joint 10 and the second joint 20. In the case where the above-mentioned driving device 300 and the stirring structure 30 are applied to the powder dispensing device 1000, the bosses are set to different sizes and / or the receiving grooves are set to different sizes. When the driving device 300 and the stirring structure 30 are docked, it can not only play a fool-proof role, but also correct the position of the stirring rod 31, so that the stirring rod 31 is in a position to close the powder outlet 401 during docking to avoid powder leakage.

[0215] Please refer to Figures 1 to 5 The utility model also provides a powder dispensing device 1000, including a powder barrel 200 in an embodiment of the utility model, and a driving device 300 in an embodiment of the utility model, wherein the first joint 10 of the powder barrel 200 is suitable for being matched with the second joint 20 of the driving device 300, and when the rotational resistance of the stirring rod 31 of the powder barrel 200 is greater than a preset value, the second joint 20 slides relative to the first joint 10 and separates.

[0216] The rotation center line of the first joint 10 is colinear with the rotation center line of the second joint 20 to ensure the working stability of the equipment.

[0217] In one embodiment, reference Figure 3 and Figure 5The powder dispensing device 1000 further includes a support frame (not shown in the figure) and a powder barrel support 70 . The driving device 300 is disposed on the support frame. The powder barrel support 70 is detachably connected to the support frame. The powder barrel support 70 is suitable for supporting the powder barrel 200 .

[0218] The specific structure of the powder barrel support 70 is not limited. Exemplarily, the powder barrel support 70 includes a support plate 71 and a handle 72, the support plate 71 is suitable for supporting the powder barrel 200, and the handle 72 is connected to the support plate 71, and the handle 72 is suitable for an experimenter or a robot to take and place the powder barrel support 70.

[0219] In one embodiment, the powder dispensing device 1000 further includes a transport robot (not shown in the figure), which is suitable for taking and placing the powder barrel bracket 70 on the support frame to achieve full automation of the experimental operation.

[0220] In an embodiment of the utility model, the powder barrel 200 can be placed on the powder barrel bracket 70 in advance, and the transport robot can drive the powder barrel bracket 70 to move the powder barrel 200 to the installation position on the support frame and complete the installation of the powder barrel bracket 70. At this installation position, the second joint 20 can be matched and connected with the first joint 10.

[0221] The powder dispensing device 1000 provided by the utility model adopts the powder barrel 200 in the embodiment of the utility model and the driving device 300 in the embodiment of the utility model. The first joint 10 of the powder barrel 200 is suitable for being connected with the second joint 20 of the driving device 300, and when the rotational resistance of the stirring rod 31 of the powder barrel 200 is less than or equal to a preset value, the second joint 20 is connected with the first joint 10, so that the driving device 300 can drive the first joint 10 to rotate, and then drive the stirring rod 31 to rotate. When the rotational resistance of the stirring rod 31 is greater than the preset value, the first joint 10 is away from the driving device 300 and separated from it to cut off the power transmission and avoid overload, so as to protect the components and avoid structural damage.

[0222] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0223] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A stirring structure, characterized in that: include: Stirring rod; The first joint includes a first substrate and a first boss, wherein the first boss is arranged on the first substrate and deviates from the rotation center line of the first substrate; the first substrate is connected to the stirring rod on the side facing away from the first boss, and the first boss is suitable for being connected with the driving device and driven to rotate to drive the stirring rod to rotate, and when the rotation resistance of the stirring rod is greater than a preset value, the first boss slides relative to the driving device and separates.

2. The stirring structure according to claim 1, characterized in that: A rotation center line of the first substrate is colinear with a rotation center line of the stirring rod, and the first boss extends along a rotation direction of the first substrate.

3. The stirring structure according to claim 2, characterized in that: In the rotation direction of the first substrate, a dimension of an end of the first boss away from the first substrate is smaller than a dimension of an end of the first boss connected to the first substrate.

4. The stirring structure according to claim 3, characterized in that: The first boss includes a first side surface on one side in the rotation direction of the first substrate, the first side surface is inclined relative to the rotation center line of the first substrate, and an extension surface of the first side surface passes through the center point of the first substrate; The first side surface is suitable for being connected with the driving device in cooperation, and is suitable for sliding relative to the driving device when the rotation resistance of the stirring rod is greater than a preset value.

5. The stirring structure according to claim 4, characterized in that: The first boss further includes a second side surface opposite to the first side surface in the rotation direction of the first substrate, the second side surface is inclined relative to the rotation center line of the first substrate, and an extension surface of the second side surface passes through the center point of the first substrate, and an orthographic projection of the first boss in the radial direction of the first substrate is a trapezoid; The second side surface is suitable for being connected with a driving device, and when the rotational resistance of the stirring rod is greater than a preset value, if the first side surface and the driving device slide relative to each other, the second side surface is separated from the driving device; if the second side surface and the driving device slide relative to each other, the first side surface is separated from the driving device.

6. The stirring structure according to claim 1, characterized in that: There are a plurality of the first bosses, and the plurality of the first bosses are arranged on the first substrate at intervals in the circumferential direction, and a first receiving groove is formed between two adjacent first bosses; Each of the first bosses and each of the first accommodating grooves are suitable for being connected with a driving device.

7. The stirring structure according to claim 6, characterized in that: The distances between two adjacent first bosses among the plurality of first bosses are not all equal or not all equal, and / or the sizes of the plurality of first bosses in the rotation direction of the first substrate are not all equal or not all equal.

8. The stirring structure according to any one of claims 1 to 7, characterized in that: The stirring rod comprises a transmission shaft and a rod body, one end of the transmission shaft is connected to the first substrate, and the other end is connected to the rod body.

9. The stirring structure according to claim 8, characterized in that: The stirring rod further comprises an elastic component. A receiving groove is formed at one end of the transmission shaft facing away from the first substrate. The elastic component is fixed in the receiving groove and elastically connected to the rod body.

10. The stirring structure according to claim 9, characterized in that: A first matching portion is provided on the side wall of the receiving groove, and a second matching portion is provided on the outer peripheral surface at the end of the rod body. The first matching portion and the second matching portion are matched and connected so that the rod body and the transmission shaft can be moved in the axial direction and relatively fixed in the circumferential direction.

11. A powder barrel, characterized in that: It comprises a barrel body, a cover body and a stirring structure as described in any one of claims 1 to 10, wherein the barrel body has a powder outlet and a cover opening relative to each other, the cover body is covered on the cover opening, a stirring rod of the stirring structure is rotatably connected to the cover body, and the stirring rod is suitable for controlling the opening of the powder outlet.

12. The powder barrel according to claim 11, characterized in that: The powder barrel further includes a bearing, the cover body is provided with a mounting hole, and the bearing is fixedly arranged in the mounting hole; The stirring rod includes a transmission shaft and a rod body. The transmission shaft is inserted into the mounting hole and is rotatably connected to the bearing. One end of the transmission shaft is connected to the first substrate of the stirring structure, and the other end is connected to the rod body. The rod body is accommodated in the barrel body and is suitable for controlling the opening of the powder outlet.

13. A driving device, characterized in that: The driving device is suitable for driving the stirring structure according to any one of claims 1 to 10 to rotate, and the driving device comprises: Driving mechanism; The second joint includes a second substrate and a second boss, wherein the second boss is arranged on the second substrate and deviates from the rotation center line of the second substrate; the side of the second substrate facing away from the second boss is connected to the driving mechanism, and the driving mechanism is suitable for driving the second joint to rotate; the second boss is suitable for cooperating and connecting with the first boss of the stirring structure to drive the stirring rod of the stirring structure to rotate; when the rotation resistance of the stirring rod is greater than a preset value, the second boss slides relative to the first boss and separates.

14. The driving device according to claim 13, characterized in that: The second boss extends along a rotation direction of the second substrate. In the rotation direction of the second substrate, a dimension of an end of the second boss away from the second substrate is smaller than a dimension of an end of the second boss connected to the second substrate.

15. The driving device according to claim 14, characterized in that: The second boss includes a third side surface on one side in the rotation direction of the second substrate, the third side surface is inclined relative to the rotation center line of the second substrate, and an extension surface of the third side surface passes through the center point of the second substrate; The third side surface is suitable for being connected with the first boss in a cooperative manner and sliding relatively therewith when the rotation resistance of the stirring rod is greater than a preset value.

16. The driving device according to claim 15, characterized in that: The second boss further includes a fourth side surface opposite to the third side surface in the rotation direction of the second substrate, the fourth side surface is inclined relative to the rotation center line of the second substrate, and an extension surface of the fourth side surface passes through the center point of the second substrate, and the orthographic projection of the second boss in the radial direction of the second substrate is a trapezoid; The fourth side surface is suitable for being connected with the first boss in cooperation, and when the rotational resistance of the stirring rod is greater than a preset value, if the third side surface and the first boss slide relative to each other, the fourth side surface is separated from the first boss; if the fourth side surface and the first boss slide relative to each other, the third side surface is separated from the first boss.

17. The driving device according to claim 13, characterized in that: There are a plurality of the second bosses, and the plurality of the second bosses are arranged on the second substrate at intervals in the circumferential direction, and a second receiving groove is formed between two adjacent second bosses; Each of the second bosses and each of the second accommodating grooves are suitable for being matched and connected with the first joint of the stirring structure.

18. The driving device according to claim 17, characterized in that: The distances between two adjacent second bosses among the plurality of second bosses are not all equal or not all equal, and / or the sizes of the plurality of second bosses in the rotation direction of the second substrate are not all equal or not all equal.

19. The driving device according to any one of claims 13 to 18, characterized in that: The driving mechanism comprises a driving member and a transmission assembly, the driving member is connected to the transmission assembly, and the second joint is connected to the transmission assembly; The transmission assembly includes a speed change mechanism and a transmission rod, the speed change mechanism is connected to the driving member, one end of the transmission rod is connected to the speed change mechanism, and the other end is connected to the second joint; the driving member drives the transmission rod to rotate through the speed change mechanism, and then drives the second joint to rotate.

20. The driving device according to claim 19, characterized in that The second joint further includes a connecting rod, the connecting rod being connected to a surface of the second substrate facing away from the second boss; The driving mechanism also includes a connecting plate, a sliding block and a second elastic member. The sliding block is slidably arranged on the transmission rod. The end of the transmission rod facing away from the speed change mechanism is fixedly connected to the connecting plate. The connecting plate is provided with a transmission hole. The connecting rod is passed through the transmission hole and fixedly connected to the sliding block. The connecting rod and the connecting plate are relatively fixed in the circumferential direction. The second elastic member elastically abuts against the connecting plate and the second substrate.

21. The driving device according to claim 20, characterized in that: There are multiple transmission rods, which are arranged at intervals; the rotation center line of the connecting rod is colinear with the rotation center line of the second substrate, and the multiple transmission rods revolve around the rotation center line of the second substrate; or, There are multiple connecting rods, which are arranged at intervals; the rotation center line of the transmission rod is colinear with the rotation center line of the second substrate, and the multiple connecting rods all revolve around the rotation center line of the second substrate.

22. The driving device according to claim 20, characterized in that: The driving device also includes a detector, which is arranged on one side of the transmission rod. The detector is suitable for detecting the position of the sliding block to determine the connection state of the second joint and the first joint, and alarming when the second joint is separated from the first joint.

23. A powder dispensing device, characterized in that It includes a powder barrel as described in claim 11 or 12, and a driving device as described in any one of claims 13 to 22, wherein the first joint of the powder barrel is suitable for being connected with the second joint of the driving device, and when the rotational resistance of the stirring rod of the powder barrel is greater than a preset value, the second joint slides relative to the first joint and separates.

24. A clutch assembly, characterized in that: include: A first joint, comprising a first substrate and a first boss, wherein the first boss is disposed on the first substrate and deviates from a rotation center line of the first substrate; A second joint comprises a second substrate and a second boss, wherein the second boss is disposed on the second substrate and deviates from the rotation center line of the second substrate; the first substrate is opposite to the second substrate, and the first boss is suitable for being matched and connected with the second boss; The first joint rotates driven by the second joint, and when the rotation resistance of the first joint is greater than a preset value, the second boss slides relative to the first boss and separates from each other, so that the first joint is separated from the second joint.

25. The clutch assembly according to claim 24, characterized in that: A rotation center line of the first substrate is colinear with a rotation center line of the second substrate, the first boss extends along a rotation direction of the first substrate, and the second boss extends along a rotation direction of the second substrate.

26. The clutch assembly according to claim 24, characterized in that: In the rotation direction of the first substrate, the size of the first boss at one end away from the first substrate is smaller than the size of the end connected to the first substrate; In the rotation direction of the second substrate, the dimension of the second boss at one end away from the second substrate is smaller than the dimension of the second boss at one end connected to the second substrate.

27. The clutch assembly according to claim 26, characterized in that: The first boss includes a first side surface on one side in the rotation direction of the first substrate, the first side surface is inclined relative to the rotation center line of the first substrate, and an extension surface of the first side surface passes through the center point of the first substrate; The second boss includes a third side surface on one side in the rotation direction of the second substrate, the third side surface is inclined relative to the rotation center line of the second substrate, and an extension surface of the third side surface passes through the center point of the second substrate; The third side surface is suitable for being matched and connected with the first side surface, and sliding relatively when the rotation resistance of the first joint is greater than a preset value.

28. The clutch assembly according to claim 27, characterized in that: The first boss further includes a second side surface opposite to the first side surface in the rotation direction of the first substrate, the second side surface is inclined relative to the rotation center line of the first substrate, and an extension surface of the second side surface passes through the center point of the first substrate, and an orthographic projection of the first boss in the radial direction of the first substrate is a trapezoid; The second boss further includes a fourth side surface opposite to the third side surface in the rotation direction of the second substrate, the fourth side surface is inclined relative to the rotation center line of the second substrate, and an extension surface of the fourth side surface passes through the center point of the second substrate, and the orthographic projection of the second boss in the radial direction of the second substrate is a trapezoid; The fourth side surface is suitable for being connected with the second side surface in cooperation, and when the rotational resistance of the first joint is greater than a preset value, if the fourth side surface and the second side surface slide relative to each other, the first side surface is separated from the third side surface; if the first side surface and the third side surface slide relative to each other, the fourth side surface and the second side surface are separated.

29. The clutch assembly according to claim 24, characterized in that: There are a plurality of the first bosses, and the plurality of the first bosses are arranged on the first substrate at intervals in the circumferential direction, and a first receiving groove is formed between two adjacent first bosses; There are a plurality of the second bosses, and the plurality of the second bosses are arranged on the second substrate at intervals in the circumferential direction, and a second receiving groove is formed between two adjacent second bosses; The second boss is suitable for extending into the first receiving groove, and the first boss is suitable for extending into the second receiving groove.

30. The clutch assembly according to claim 29, characterized in that: The distances between two adjacent first bosses among the plurality of first bosses are not all equal or not all equal, and / or the sizes of the plurality of first bosses in the rotation direction of the first substrate are not all equal or not all equal; The distances between two adjacent second bosses among the plurality of second bosses are not all equal or not all equal, and / or the sizes of the plurality of second bosses in the rotation direction of the second substrate are not all equal or not all equal.

31. The clutch assembly according to any one of claims 24 to 30, characterized in that: The side of the first substrate facing away from the first boss is connected to the working piece, the side of the second substrate facing away from the second boss is connected to the driving mechanism, and the second joint is driven to rotate by the driving mechanism to drive the first joint and the working piece to rotate synchronously.

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