CN218614174U - Positioning assembly, transmission mechanism and robot - Google Patents

Abstract

The utility model provides a locating component, drive mechanism and robot relates to location connection technical field. The positioning assembly includes: a preload member including a first thread configured to couple to a first work piece, the preload member for positioning a second work piece on the first work piece; the anti-loosening piece is abutted with the pre-tightening piece and comprises a second thread, the second thread is configured to be connected with the first workpiece, and the rotation directions of the first thread and the second thread are opposite; and the connecting part is used for connecting the preload piece and the anti-loosening piece and preventing the preload piece and the anti-loosening piece from rotating relatively.

Description

Positioning assembly, transmission mechanism and robot

Technical Field

The utility model relates to a location connection technical field particularly, relates to a locating component, drive mechanism and robot.

Background

In the related art, the mechanisms such as structural parts and bearings are mostly positioned through press-fitting positioning structures installed in a threaded screwing manner, but in the long-time use process, threads are easy to loosen, so that the positioning function is failed, and the safety and the reliability of related equipment are affected.

Therefore, how to overcome the above technical defects becomes a technical problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least.

To this end, a first aspect of the present invention provides a positioning assembly.

A second aspect of the present invention provides a transmission mechanism.

A third aspect of the present invention provides a robot.

In view of this, the utility model discloses the first aspect provides a locating component, and locating component includes: a preload member including a first thread configured to couple to a first work piece, the preload member for positioning a second work piece on the first work piece; the anti-loosening piece is abutted with the pre-tightening piece and comprises a second thread, the second thread is configured to be connected with the first workpiece, and the rotating directions of the first thread and the second thread are opposite; and the connecting part is used for connecting the preload piece and the anti-loosening piece and preventing the preload piece and the anti-loosening piece from rotating relatively.

The present application defines a positioning assembly for securing a second workpiece to be positioned to a first workpiece. Specifically, the positioning assembly comprises a pre-tightening piece, wherein a first thread is arranged on the pre-tightening piece, the screwing direction of the first thread is a first screwing direction, the second workpiece is placed at a preset position of the first workpiece firstly in the assembling process, and then the pre-tightening piece is screwed on the first workpiece through the first thread so as to complete the preset position of the second workpiece on the first workpiece through the screwed pre-tightening piece and prevent the second workpiece from falling off from the first workpiece.

On the basis, the positioning assembly further comprises an anti-loosening piece, wherein a second thread is arranged on the anti-loosening piece, the rotating direction of the second thread is a second rotating direction, the second rotating direction is opposite to the first rotating direction, and the anti-loosening piece is screwed on the first workpiece through the second thread. For example, the preload member is screwed clockwise into the first work piece and the check member is screwed counterclockwise into the first work piece, or the preload member is screwed counterclockwise into the first work piece and the check member is screwed clockwise into the first work piece. After the installation of the preload piece is completed, the anti-loosening piece is screwed into the first workpiece until the anti-loosening piece abuts against the preload piece so as to provide thrust limit for the preload piece.

The positioning assembly further comprises a connecting piece, the connecting piece is connected with the pre-tightening piece and the anti-loosening piece, and the pre-tightening piece and the anti-loosening piece cannot rotate relative to each other after connection is completed. For the preload piece, the preset position can be removed only by rotating along the second rotating direction, and for the anti-loosening piece, the preset piece can be separated from the anti-loosening piece only by rotating along the first rotating direction so as to release the thrust limit, so that the preload piece and the anti-loosening piece are mutually limited to rotate under the action of the connecting piece, and the locking is realized. Thereby eliminating the hidden trouble that the second workpiece is misplaced even falls off because of the loosening of the screw thread.

Therefore, the loosening prevention piece is arranged in the opposite screwing direction to the installation direction of the pre-tightening piece, and the pre-tightening piece and the loosening prevention piece are connected through the connecting part, so that the possibility that the pre-tightening piece is loosened due to reverse rotation can be eliminated, and the technical problems that the loosening is easy to occur on threads, the positioning function is easy to lose efficacy, and the safety and the reliability of associated equipment are poor in the related technology are solved. And then realize optimizing the locating component structure, promote positioning stability and positioning accuracy, reduce the technical effect of associated product fault rate.

Additionally, the utility model provides an above-mentioned locating component can also have following additional technical characterstic:

in above-mentioned technical scheme, the pretensioning piece includes the screw, and connecting portion include: and the screw penetrates through the screw hole and is used for pressing and installing the anti-loosening piece on the pre-tightening piece.

In this technical scheme, be provided with the screw on the pretensioning piece, connecting portion include the screw correspondingly, and the front end of screw is worn in the screw, and the afterbody butt of screw is in the one side that locking piece deviates from the pretensioning piece to screw through the screw of screw in screw is with locking piece pressure equipment on the pretensioning piece, and it is spacing to ensure that the locking piece can provide the thrust to the pretensioning piece.

In the assembling process, after the installation of the pre-tightening piece is completed, the anti-loosening piece is screwed into the first workpiece until the anti-loosening piece is attached to the pre-tightening piece, and overlarge twisting moment is not required to be applied. And then, the screw is screwed into the screw hole by preset torque so as to ensure the stability and reliability of the press fitting of the screw on the anti-loosening element. The connection mode avoids the operation of screwing the anti-loosening element through preset torque, thereby reducing the possibility of damaging the first workpiece or the pre-tightening element due to over screwing in the anti-loosening element, and ensuring that the positioning reliability of the positioning assembly is not influenced by the aid of screws with relatively small destructiveness on the basis. And then realize optimizing locating component structure, promote locating component practicality, reduce locating component destructive technological effect. In particular, the mounting operation of the screw may be accomplished by a torque wrench.

Simultaneously, the screw still possesses the purchase cost low, and the purchase degree of difficulty is little, easy dismounting's advantage. And then realize reducing locating component manufacturing cost, reduce locating component and maintain the degree of difficulty and maintenance cost, provide the technological effect of the convenient condition for the user.

Specifically, the connection portion can further include: for example, a clamping groove is formed in the pre-tightening piece, a buckle is arranged on the anti-loosening piece, and the buckle is clamped into the clamping groove to prevent the pre-tightening piece and the anti-loosening piece from rotating relative to each other; or a bolt and a nut, for example, the bolt penetrating through the preload piece and the anti-loosening piece is matched with the nuts on two sides to complete connection so as to prevent the preload piece and the anti-loosening piece from rotating relatively; or a slot inserting rib, for example, a slot is arranged on the prefastening piece, and the inserting rib penetrates through the anti-loosening piece and is inserted into the slot after the anti-loosening piece is screwed in, so as to prevent the relative rotation of the anti-loosening piece and the prefastening piece.

The jack dowel bar isotructure, the cooperation mode of screw and screw belongs to a concrete scheme that can adopt, and the rigid limit is not done to connecting portion to this application, satisfies to prevent that pretension piece and locking piece rotate this demand relatively can.

In any one of the above technical solutions, the screw holes are plural, and the plural screw holes are arranged around the rotating shaft of the preload piece.

In this technical scheme, be provided with a plurality of screw holes on the pretensioning piece, and a plurality of screw holes encircle the pivot setting of pretensioning piece. For example, 12 threaded holes are provided in the preload member and the 12 threaded holes are provided at different orientations around the axis of rotation of the preload member.

Through setting up a plurality of screw, make locking piece can help promoting the steadiness of pressure equipment location on the one hand on the pretension piece with the help of a plurality of screw pressure equipments. On the other hand can come the stress concentration problem on the single screw of link through sharing effort to reduce the possibility that the screw damaged or the pine takes off, and then realize optimizing the pretensioning piece structure, promote the technological effect of locating component reliability.

In any of the above technical solutions, the plurality of screw holes are uniformly distributed on the same circle using the rotating shaft of the preload member as the shaft.

In the technical scheme, the distribution mode of the screw holes on the preload piece is limited. Specifically, a distribution circle is divided on the preload piece by taking a rotating shaft of the preload piece as an axis, wherein a plurality of screw holes are uniformly distributed on the distribution circle. For example, in the case of 12 threaded holes provided in the preload member, the angle between adjacent two threaded holes is 30 °.

Through a plurality of screws of evenly distributed on the pretensioning piece, can promote the atress homogeneity of pretensioning piece and screw to reduce pretensioning piece and screw because of the probability that the atress inequality damaged, and then realize optimizing the screw overall arrangement, promote the technological effect of locating component structural stability and reliability.

In any one of the above technical solutions, the locking member includes a first through hole, and the screw penetrates through the first through hole and abuts against the locking member.

In the technical scheme, a first screw press-fitting mode is provided. Specifically, be provided with first through-hole on the anti-loosening piece, the head of screw runs through anti-loosening piece and screw in the screw of pretensioning piece through first through-hole, and the pressfitting face of the afterbody of screw then the butt is on the surface that locking piece deviates from the pretensioning piece to directly with locking piece pressfitting on the pretensioning piece through the screw, prevent simultaneously that relative rotation takes place between pretensioning piece and the locking piece. And then accomplish locking of pretension piece, realize promoting the technological effect of locating component positioning accuracy and positioning reliability.

In any of the above technical solutions, the check member includes a groove facing the preload member; the groove surrounds the first through hole and is communicated with the first through hole.

In this technical scheme, locking piece is provided with the recess towards the face of pretensioning piece one side, and the opening of recess is towards the pretensioning piece to the recess surrounds in the week side of first through-hole, and recess and first through-hole intercommunication.

After will locking piece pressure equipment in the pretensioning piece through the screw, because of the existence of recess, form fit clearance between screw part locking piece all around and the pretensioning piece, the partial locking piece that this fit clearance corresponds becomes the elastic arm, at the in-process of screw in screw, deformation takes place for this elastic arm, after removing the external force of applying to the screw, the elastic arm of deformation applys extrapolated resilience force to the screw to realize the locking of screw self through this resilience force. Therefore, the possibility that the screw thread is loosened and the pre-tightening piece and the anti-loosening piece are loosened in the long-term working process of the screw is reduced. Thereby realizing the technical effects of improving the structural stability of the positioning component and improving the positioning reliability of the positioning component.

In any of the above technical solutions, the first through hole is a kidney-shaped hole.

In the technical scheme, the first through holes are kidney-shaped holes which are distributed corresponding to the distribution circle where the screw holes are located. Through setting up first through-hole into waist type hole, can reduce the degree of difficulty of aligning first through-hole and screw, make locking piece have a plurality of gestures that can connect. And then realize reducing the technical effect of the locating component assembly degree of difficulty. Simultaneously, waist type hole can be for reducing the influence that screw processing position error brought to a certain extent, and then realizes promoting the technological effect of locating component yields.

In any of the above technical solutions, the number of the screw holes is greater than or equal to the number of the waist-shaped holes.

In the technical scheme, the number of the screw holes is more than or equal to that of the kidney-shaped holes. Specifically, when the number of the screw holes is equal to the number of the kidney-shaped holes, the kidney-shaped holes and the screw holes are arranged in a one-to-one correspondence manner. When the number of the screw holes is larger than that of the kidney-shaped holes, the screw holes of the connecting part can be selected, or one kidney-shaped hole corresponds to a plurality of screw holes, so that a plurality of screws can be inserted into a single kidney-shaped hole. Thereby realizing the technical effects of improving the structural freedom degree of the positioning assembly and providing a selection space for a user.

In any of the above technical solutions, the positioning assembly further includes: the pressing plate comprises a second through hole, and the screw penetrates through the second through hole; the anti-loosening element is positioned between the preload element and the pressure plate, and the screw is used for pressing and installing the anti-loosening element on the preload element through the pressure plate.

In the technical scheme, a second screw press-fitting mode is provided. Specifically, the locating component is further provided with a pressing plate, the pressing plate is installed on one side, away from the pre-tightening piece, of the anti-loosening piece, a second through hole is formed in the pressing plate, the head of the screw penetrates through the pressing plate through the second through hole firstly, and then the screw penetrates through the anti-loosening piece and is screwed into the screw hole. After the assembly is completed, the anti-loosening piece is positioned between the pressing plate and the pre-tightening piece, so that the anti-loosening piece is pressed on the pre-tightening piece through the screw and the pressing plate together.

Compared with the technical scheme that the screw is directly screwed into the anti-loosening element, the pressing plate is arranged to reduce the damage of press fit assembly to the anti-loosening element by increasing the contact area, so that the possibility that the anti-loosening element is damaged by screwing the screw is reduced. Meanwhile, the pressing plate can also play a role in shielding and protecting the anti-loosening piece, and the possibility that the anti-loosening piece is subjected to external force impact dislocation or even is damaged can be reduced. Therefore, the technical effects of improving the structural stability and reliability of the positioning assembly and reducing the failure rate of the positioning assembly are achieved.

In any of the above technical solutions, the platen includes: a first segment part abutting against the anti-loosening member; the second section part is connected with the first section part and is spaced from the preload part, and the second section part is provided with the second through hole.

In the technical scheme, the pressure plate is divided into a first section part and a second section part. Specifically, the first section part is located second section part week side, and first section part and the surface laminating of anti-loosening member are used for exerting down force to anti-loosening member. The through hole is formed in the second section, the press-fit surface at the tail of the screw applies pressure to the second section, and a space is reserved between the second section and the pre-tightening piece after assembly is completed. For example, a blind hole can be arranged on the anti-loosening element, the first section is overlapped outside the blind hole, and the second section is inserted into the blind hole and is spaced from the bottom surface of the blind hole.

The second section becomes the elastic arm by leaving a fit clearance between the second section and the locking member. In the process of screwing in the screw, the elastic arm deforms, and after the external force applied to the screw is removed, the deformed elastic arm applies an outward-pushing resilience force to the screw so as to realize the looseness prevention of the screw through the resilience force. Therefore, the possibility that the screw thread is loosened and the pre-tightening piece and the anti-loosening piece are loosened in the long-term working process of the screw is reduced. Therefore, the technical effects of improving the structural stability of the positioning assembly and improving the positioning reliability of the positioning assembly are achieved.

In any of the above technical solutions, the preload member includes a boss; the anti-loosening piece is annular and is sleeved on the boss.

In this technical scheme, the pretensioning piece is provided with the boss towards one side of anti-loosening member, and anti-loosening member is cyclic annular correspondingly, is formed with the jack of shape and size adaptation boss on it, accomplishes the assembly back of anti-loosening member, and the jack cup joints on the boss.

Through setting up boss and annular anti-loosening member, can accomplish the initial settlement of anti-loosening member on the pretensioning piece through cup jointing the cooperation on the one hand to reduce the assembly degree of difficulty of anti-loosening member, promote assembly efficiency. Meanwhile, the boss and the jack can play a role in radial positioning, and the structural stability of the positioning assembly is favorably improved so as to reduce the failure rate of the positioning assembly.

The utility model discloses the second aspect provides a drive mechanism, drive mechanism includes: the positioning assembly according to any of the above embodiments; and the shell comprises a third thread and a fourth thread, the first thread is meshed with the third thread, and the second thread is meshed with the fourth thread.

In this technical solution, a transmission mechanism provided with the positioning component in any one of the above technical solutions is defined, so that the transmission mechanism has the advantages of the positioning component in any one of the above technical solutions, and can achieve the technical effects that can be achieved by the positioning component in any one of the above technical solutions, and in order to avoid repetition, details are not repeated here.

On the basis, the transmission mechanism further comprises a shell, the shell corresponds to the first workpiece, a third thread and a fourth thread are arranged on the shell, the third thread and the first thread are matched, the preload piece can be screwed into the shell by rotating the preload piece along the first screwing direction, the fourth thread is matched with the second thread, and the anti-loosening piece can be screwed into the shell by rotating the anti-loosening piece along the second screwing direction.

In any of the above solutions, the housing includes a mounting groove, and at least a portion of the preload member is embedded in the mounting groove.

In the technical scheme, the shell is further provided with an installation groove, the shape of the installation groove is matched with at least part of the outer contour of the pre-tightening piece, and after the pre-positioning of the pre-tightening piece is completed, at least part of the pre-tightening piece is embedded in the installation groove.

By providing the mounting groove, on the one hand, a guiding function can be achieved during screwing in of the preload member, so that the possibility of the preload member being mounted obliquely is reduced. On the other hand mounting groove can provide radial location to the pretensioning piece to reduce the possibility that the pretensioning piece misplaces the pine and takes off, and then realize promoting drive mechanism structural stability's technological effect.

In any of the above technical solutions, the transmission mechanism further includes: the bearing is rotationally connected with the shell, a first end face of the bearing is abutted to the shell, and a second end face of the bearing is abutted to the preload piece.

In the technical scheme, the transmission mechanism further comprises a bearing, the bearing corresponds to the second workpiece, a first end face of the bearing is in contact with the shell, after the pretensioning piece, the anti-loosening piece and the connecting portion are sequentially installed, the pretensioning piece enables the first end face of the bearing to be abutted to the shell through pressing of the second end face of the bearing, and therefore axial positioning of the bearing is achieved, on the basis, the bearing can be kept at the preset installation position for a long time through the locking effect of the anti-loosening piece and the connecting portion, transmission safety and reliability of the transmission mechanism are improved, and the failure rate of the transmission assembly is reduced.

Specifically, be provided with first protruding axle on the casing, be provided with the protruding axle of second on the pretension piece, the first end of bearing is inserted to first protruding axle, and the second end of bearing is inserted to the protruding axle of second to accomplish the radial positioning of bearing simultaneously through casing and pretension piece, in order to realize the accurate location of bearing.

The utility model discloses the second aspect provides a robot, and the robot includes: the transmission mechanism in any one of the above technical solutions.

In this technical solution, a robot provided with the transmission mechanism in any one of the above technical solutions is defined, so that the robot has the advantages of the transmission mechanism in any one of the above technical solutions, and can achieve the technical effects that can be achieved by the transmission mechanism in any one of the above technical solutions, and details are not repeated here to avoid repetition.

Specifically, a transmission mechanism is provided in a robot arm of the robot to achieve the motion of the robot arm.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows one of the constructional schematics of a transmission mechanism according to one embodiment of the invention;

FIG. 2 is an enlarged view of a portion of the drive mechanism in the embodiment of FIG. 1 in area A;

fig. 3 shows a second schematic structural view of a transmission mechanism according to an embodiment of the present invention;

fig. 4 shows one of the constructive schematics of an anti-loose element according to one embodiment of the present invention;

fig. 5 shows a second schematic structural view of an anti-loosening element according to an embodiment of the invention;

FIG. 6 is an enlarged view of a portion of the anti-release member in the embodiment of FIG. 5 in the area B;

figure 7 shows one of the constructional schematics of a preload member according to an embodiment of the invention;

figure 8 shows a second schematic structural view of a preload member according to an embodiment of the invention;

FIG. 9 is an enlarged partial view of the preload member of the embodiment of FIG. 8 in area C;

fig. 10 shows a third schematic structural view of a transmission mechanism according to an embodiment of the present invention;

FIG. 11 is an enlarged partial view of the drive mechanism in the embodiment of FIG. 10 in area D;

fig. 12 shows a fourth schematic structural view of the transmission mechanism according to an embodiment of the present invention;

figure 13 shows a third schematic structural view of a preload member according to an embodiment of the invention;

figure 14 shows a fourth schematic structural view of a preload member according to an embodiment of the invention;

FIG. 15 is an enlarged partial view of the preload member of the embodiment of FIG. 14 in area E;

fig. 16 shows a third schematic structural view of an anti-loosening element according to an embodiment of the present invention;

fig. 17 shows a fourth schematic structural view of an anti-loosening element according to an embodiment of the present invention;

FIG. 18 is an enlarged fragmentary view of the check member in the embodiment of FIG. 17 in area F;

fig. 19 shows one of the schematic structural views of a platen according to an embodiment of the present invention;

fig. 20 shows a second schematic structural view of a platen according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 20 is:

100 positioning components, 110 pre-tightening pieces, 112 first threads, 114 screw holes, 116 bosses, 120 anti-loosening pieces, 122 second threads, 124 first through holes, 126 grooves, 130 connecting parts, 140 pressing plates, 142 second through holes, 144 first sections, 146 second sections, 200 transmission mechanisms, 210 shells, 212 third threads, 214 fourth threads, 216 mounting grooves and 220 bearings.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Positioning assemblies, transmission mechanisms, and robots according to some embodiments of the present invention are described below with reference to fig. 1-20.

Example one

As shown in fig. 1, fig. 2, fig. 10 and fig. 11, an embodiment of the present invention provides a positioning assembly 100, where the positioning assembly 100 includes: a preload member 110 including a first thread 112, the first thread 112 configured to engage a first work piece, the preload member 110 for positioning a second work piece on the first work piece; an anti-loosening element 120 abutting the preload element 110, the anti-loosening element including a second thread 122, the second thread 122 being configured to engage a first workpiece, the first thread 112 and the second thread 122 being of opposite hand; and the connecting part 130 is used for connecting the tightening member 110 and the anti-loosening member 120 and preventing the tightening member 110 and the anti-loosening member 120 from rotating relatively.

The present application defines a positioning assembly 100 for securing a second workpiece to be positioned on a first workpiece. Specifically, the positioning assembly 100 comprises a pre-tightening member 110, wherein a first thread 112 is arranged on the pre-tightening member 110, the direction of the first thread 112 is a first direction, during assembly, a second workpiece is placed on a preset position of the first workpiece, and then the pre-tightening member 110 is screwed on the first workpiece through the first thread 112, so that the pre-positioning of the second workpiece on the first workpiece is completed through the screwed pre-tightening member 110, and the second workpiece is prevented from falling off from the first workpiece.

On this basis, the positioning assembly 100 further includes a locking member 120, the locking member 120 is provided with a second thread 122, the direction of rotation of the second thread 122 is a second direction of rotation, the second direction of rotation is opposite to the first direction of rotation, and the locking member 120 is screwed on the first workpiece through the second thread 122. For example, the preload member 110 is screwed clockwise into the first workpiece and the check member 120 is screwed counterclockwise into the first workpiece, or the preload member 110 is screwed counterclockwise into the first workpiece and the check member 120 is screwed clockwise into the first workpiece. After the installation of the preload member 110 is completed, the anti-loosening element 120 is threaded into the first workpiece until the anti-loosening element 120 abuts the preload member 110 to provide a stop limit for the preload member 110.

The positioning assembly 100 further includes a connecting member, the connecting member connects the tightening member 110 and the anti-loosening member 120, and the tightening member 110 and the anti-loosening member 120 cannot rotate relatively after the connection is completed. For the pre-tightening member 110, it needs to rotate along the second rotation direction to remove the predetermined position, and for the anti-loosening member 120, it needs to rotate along the first rotation direction to move away from the pre-tightening member 110 to release the anti-thrust limit, so that the pre-tightening member and the anti-loosening member can mutually limit the rotation under the action of the connecting member to realize locking. Thereby eliminating the hidden trouble that the second workpiece is dislocated even falls off because of the looseness of the screw thread.

Therefore, the loosening prevention piece 120 with the reverse installation screwing direction of the preload piece 110 is arranged, and the preload piece 110 and the loosening prevention piece 120 are connected through the connecting part 130, so that the possibility that the preload piece 110 is loosened due to reverse rotation can be eliminated, and the technical problems that threads are easy to loosen, positioning functions are easy to lose efficacy, and safety and reliability of associated equipment are poor in the related art are solved. And further, the technical effects of optimizing the structure of the positioning assembly 100, improving the positioning stability and the positioning precision and reducing the fault rate of associated products are achieved.

As shown in fig. 3 and 12, in the above embodiment, the preload member 110 includes the screw hole 114, and the coupling portion 130 includes: and the screw is arranged in the screw hole 114 in a penetrating way and used for pressing the anti-loosening element 120 on the pre-tightening element 110.

In this embodiment, the preload member 110 is provided with a threaded hole 114, and the corresponding connecting portion 130 comprises a screw, the front end of the screw is threaded in the threaded hole 114, and the tail of the screw abuts against the side of the anti-loosening member 120 away from the preload member 110, so that the anti-loosening member 120 is pressed onto the preload member 110 by the screw screwed into the threaded hole 114 to ensure that the anti-loosening member 120 can provide a stop for the preload member 110.

In the assembling process, after the pre-tightening piece 110 is installed, the anti-loosening piece 120 is screwed into the first workpiece until the anti-loosening piece 120 is attached to the pre-tightening piece 110, and excessive torque does not need to be applied. Thereafter, the screw is screwed into the screw hole 114 with a predetermined torque to ensure stability and reliability of the press-fitting of the screw to the check member 120. This connection eliminates the operation of screwing the anti-loosening element 120 with a predetermined torque, thereby reducing the possibility of damaging the first workpiece or the preload element 110 by over-screwing the anti-loosening element 120 and ensuring that the positioning reliability of the positioning assembly 100 is not affected by the relatively less destructive screws. Further, the structure of the positioning assembly 100 is optimized, the practicability of the positioning assembly 100 is improved, and the destructive technical effect of the positioning assembly 100 is reduced. In particular, the mounting operation of the screw may be accomplished by a torque wrench.

Simultaneously, the screw still possesses the purchase cost low, and the purchase degree of difficulty is little, easy dismounting's advantage. And then realize reducing locating component 100 manufacturing cost, reduce locating component 100 and maintain the degree of difficulty and maintenance cost, provide the technological effect of convenient condition for the user.

Specifically, the connection portion 130 can further include: for example, the pre-tightening member 110 is provided with a locking slot, the anti-loosening member 120 is provided with a locking buckle, and the locking buckle is locked in the locking slot to prevent relative rotation of the locking buckle and the anti-loosening member; or a bolt and nut, such as by a bolt passing through the preload member 110 and the check member 120 to engage nuts on both sides to prevent relative rotation of the preload member 110 and the check member 120; or a slot-insertion rib, for example, a slot is formed on the preload member 110, and the rib is inserted into the slot through the anti-loosening member 120 after the anti-loosening member 120 is screwed in, so as to prevent the anti-loosening member 120 and the preload member 110 from rotating relatively.

The structure such as jack dowel bar, the cooperation mode of screw and screw 114 belong to a concrete scheme that can adopt, and this application does not do hard limit to connecting portion 130, satisfies the demand that prevents pretension piece 110 and locking piece 120 relative rotation and can.

In any of the above embodiments, as shown in fig. 7, 8 and 9, the threaded hole 114 is multiple, and the multiple threaded holes 114 are disposed around the rotating shaft of the preload member 110.

In this embodiment, the preload member 110 has a plurality of threaded holes 114, and the plurality of threaded holes 114 are disposed around the rotational axis of the preload member 110. For example, 12 threaded holes 114 are provided in the preload member 110, and the 12 threaded holes 114 are provided at different orientations around the axis of rotation of the preload member 110.

By providing a plurality of screw holes 114, the anti-loose element 120 can be pressed onto the pre-tightening element 110 by a plurality of screws, which helps to improve the stability of the press-fitting positioning. On the other hand, the stress concentration problem on a single screw can be solved by distributing the acting force, so that the possibility of damage or loosening of the screw is reduced, the structure of the pre-tightening piece 110 is optimized, and the technical effect of improving the reliability of the positioning assembly 100 is achieved.

As shown in fig. 13, 14 and 15, in any of the above embodiments, the plurality of screw holes 114 are uniformly distributed on the same circle about the rotation axis of the preload member 110.

In this embodiment, the distribution of the threaded holes 114 on the preload member 110 is defined. Specifically, a distribution circle is defined on the preload member 110 with the rotation shaft of the preload member 110 as an axis, wherein a plurality of screw holes 114 are uniformly distributed on the distribution circle. For example, in the case of 12 threaded holes 114 provided in the preload member 110, the angle between two adjacent threaded holes 114 is 30 °.

Through a plurality of screw holes 114 of evenly distributed on pretensioning piece 110, can promote the atress homogeneity of pretensioning piece 110 and screw to reduce pretensioning piece 110 and screw because of the probability that the atress inequality damaged, and then realize optimizing screw hole 114 overall arrangement, promote the technical effect of locating component 100 structural stability and reliability.

Example two

As shown in fig. 2, 3, 4 and 5, in the second embodiment of the present invention, the locking member 120 includes a first through hole 124, and the screw penetrates through the first through hole 124 and abuts against the locking member 120.

In this embodiment, a first screw press-fitting manner is proposed. Specifically, the anti-loose member 120 is provided with a first through hole 124, the head of the screw penetrates through the anti-loose member 120 through the first through hole 124 and is screwed into the screw hole 114 of the pre-tightening member 110, and the pressing surface of the tail of the screw abuts against the surface of the anti-loose member 120 away from the pre-tightening member 110, so that the anti-loose member 120 is directly pressed on the pre-tightening member 110 through the screw, and the relative rotation between the pre-tightening member 110 and the anti-loose member 120 is prevented. Thereby completing the anti-loose locking of the preload member 110 and realizing the technical effects of improving the positioning accuracy and the positioning reliability of the positioning assembly 100.

In any of the above embodiments, as shown in fig. 6, the check member 120 includes a groove 126, the groove 126 facing the preload member 110; the groove 126 surrounds the first through hole 124 and communicates with the first through hole 124.

In this embodiment, the surface of the check member 120 facing the preload member 110 is provided with a groove 126, the opening of the groove 126 faces the preload member 110, the groove 126 surrounds the periphery of the first through hole 124, and the groove 126 communicates with the first through hole 124.

After locking piece 120 is pressed fit in pretension piece 110 through the screw, because of the existence of recess 126, form fit clearance between partial locking piece 120 around the screw and pretension piece 110, the partial locking piece 120 that this fit clearance corresponds becomes the elastic arm, at the in-process of screw in, this elastic arm takes place deformation, after removing the external force of applying to the screw, the elastic arm of deformation exerts the extrapolated resilience force to the screw to realize the locking of screw self through this resilience force. Thereby reducing the possibility that the screw thread loosens during long-term operation and the preload member 110 and the check member 120 loosen accordingly. Thereby realizing the technical effects of improving the structural stability of the positioning component 100 and improving the positioning reliability of the positioning component 100.

In any of the above embodiments, the first through-hole 124 is a kidney-shaped hole, as shown in fig. 3 and 4.

In this embodiment, the first through holes 124 are kidney-shaped holes, and the kidney-shaped holes are distributed corresponding to the distribution circle where the screw holes 114 are located. By providing the first through hole 124 as a kidney-shaped hole, the difficulty of aligning the first through hole 124 and the screw hole 114 can be reduced, and the locking member 120 can have a plurality of connectable postures. Thereby realizing the technical effect of reducing the assembly difficulty of the positioning component 100. Meanwhile, the waist-shaped hole can reduce the influence caused by the processing position error of the screw hole 114 to a certain extent, thereby achieving the technical effect of improving the yield of the positioning assembly 100.

In any of the above embodiments, the number of the screw holes 114 is greater than or equal to the number of the waist-shaped holes.

In this embodiment, the number of screw holes 114 is equal to or greater than the number of kidney-shaped holes. Specifically, when the number of the screw holes 114 is equal to the number of the kidney-shaped holes, the plurality of kidney-shaped holes are provided in one-to-one correspondence with the plurality of screw holes 114. When the number of the screw holes 114 is greater than the number of the kidney-shaped holes, the selective connection portion 130 is divided into the screw holes 114, or one kidney-shaped hole corresponds to a plurality of screw holes 114, so that a plurality of screws can be inserted into a single kidney-shaped hole. Thereby realizing the technical effects of improving the structural freedom degree of the positioning assembly 100 and providing a selection space for users.

EXAMPLE III

As shown in fig. 10, 11, 12 and 13, in the third embodiment of the present invention, the positioning assembly 100 further includes: a pressure plate 140 including a second through hole 142, the screw passing through the second through hole 142; the anti-release member 120 is located between the preload member 110 and the pressure plate 140, and a screw is used to press the anti-release member 120 to the preload member 110 through the pressure plate 140.

In this embodiment, a second screw press-fitting manner is proposed. Specifically, the positioning assembly 100 is further provided with a pressing plate 140, the pressing plate 140 is installed on a side of the anti-loosening element 120 facing away from the preload element 110, the pressing plate 140 is provided with a second through hole 142, and a head of a screw penetrates through the pressing plate 140 through the second through hole 142, then penetrates through the anti-loosening element 120 and is screwed into the screw hole 114. After the assembly is completed, the check member 120 is located between the pressing plate 140 and the tightening member 110, so that the check member 120 is press-fitted to the tightening member 110 by the combination of the screw and the pressing plate 140.

Compared with the embodiment that the screw is directly screwed into the anti-loosening element 120, the pressing plate 140 can reduce the damage of the press-fit assembly to the anti-loosening element 120 by increasing the contact area, so as to reduce the possibility that the anti-loosening element 120 is damaged by the screwed screw. Meanwhile, the pressing plate 140 can also play a role in shielding and protecting the anti-loosening element 120, so that the possibility that the anti-loosening element 120 is misplaced or even damaged due to impact of external force can be reduced. Thereby realizing the technical effects of improving the structural stability and reliability of the positioning assembly 100 and reducing the failure rate of the positioning assembly 100.

As shown in fig. 19 and 20, in any of the above embodiments, the platen 140 includes: a first segment 144 abutting against the locking member 120; and a second section 146 connected to the first section 144 and spaced apart from the preload member 110, wherein the second through hole 142 is formed in the second section 146.

In this embodiment, the platen 140 is divided into a first segment 144 and a second segment 146. Specifically, the first segment 144 is located on the periphery of the second segment 146, and the first segment 144 is attached to the surface of the locking member 120 for applying a downward pressure to the locking member 120. The through hole is formed on the second section 146, the press-fit surface of the tail of the screw applies pressure to the second section 146, and a space is left between the second section 146 and the tightening member 110 after the assembly is completed. For example, a blind hole can be provided in the locking element 120, the first section 144 overlapping the outside of the blind hole, and the second section 146 being inserted into the blind hole and spaced apart from the bottom surface of the blind hole.

The second section 146 becomes an elastic arm by leaving a fitting clearance between the second section 146 and the stopper 120. At the in-process of screw in, this elastic arm takes place deformation, after removing the external force of applying to the screw, the elastic arm of deformation applies extrapolated resilience force to the screw to realize the locking of screw self through this resilience force. Thereby reducing the possibility that the screw thread loosens during long-term operation and the preload member 110 and the check member 120 loosen accordingly. Thereby realizing the technical effects of improving the structural stability of the positioning component 100 and improving the positioning reliability of the positioning component 100.

As shown in fig. 16, 17 and 18, in any of the above embodiments, the preload member 110 includes a boss 116; the anti-loose element 120 is annular, and the anti-loose element 120 is sleeved on the boss 116.

In this embodiment, the side of the tightening member 110 facing the anti-loosening element 120 is provided with a boss 116, and correspondingly, the anti-loosening element 120 is annular, and a plug hole with a shape and a size matched with the boss 116 is formed on the ring, and after the assembly of the anti-loosening element 120 is completed, the plug hole is sleeved on the boss 116.

Through setting up boss 116 and annular locking piece 120, can accomplish the initial settlement of locking piece 120 on pretension piece 110 through the bell and spigot joint cooperation on the one hand to reduce the assembly degree of difficulty of locking piece 120, promote assembly efficiency. Meanwhile, the boss 116 and the insertion hole can play a role in radial positioning, which is beneficial to improving the structural stability of the positioning assembly 100 so as to reduce the failure rate of the positioning assembly 100.

Example four

As shown in fig. 1 and 10, in a fourth aspect of the present invention, an embodiment provides a transmission mechanism 200, where the transmission mechanism 200 includes: the positioning assembly 100 as in any of the embodiments described above; the housing 210 includes third threads 212 and fourth threads 214, the first threads 112 engaging the third threads 212, and the second threads 122 engaging the fourth threads 214.

In this embodiment, a transmission mechanism 200 provided with the positioning assembly 100 in any of the above embodiments is defined, so that the transmission mechanism 200 has the advantages of the positioning assembly 100 in any of the above embodiments, and can achieve the technical effects that can be achieved by the positioning assembly 100 in any of the above embodiments, and in order to avoid repetition, the details are not repeated here.

On the basis, the transmission mechanism 200 further includes a housing 210, the housing 210 corresponds to the first workpiece, and the housing 210 is provided with a third thread 212 and a fourth thread 214, wherein the third thread 212 is adapted to the first thread 112, the preload member 110 can be screwed into the housing 210 by rotating the preload member 110 in the first rotation direction, and the fourth thread 214 is adapted to the second thread 122, and the anti-loose member 120 can be screwed into the housing 210 by rotating the anti-loose member 120 in the second rotation direction.

In any of the above embodiments, the housing 210 includes a mounting slot 216, and at least a portion of the preload member 110 is received in the mounting slot 216.

In this embodiment, the housing 210 is further provided with a mounting groove 216, the mounting groove 216 is shaped to fit at least a portion of the outer profile of the preload member 110, and after the predetermined positioning of the preload member 110 is completed, at least a portion of the preload member 110 is inserted into the mounting groove 216.

By providing the mounting slot 216, it is possible to provide a guide during the screwing process of the preload member 110 to reduce the possibility of the preload member 110 being installed in a skewed manner. On the other hand, the mounting groove 216 can provide radial positioning for the preload member 110 to reduce the possibility of the preload member 110 being dislocated and loosened, thereby achieving the technical effect of improving the structural stability of the transmission mechanism 200.

In any of the above embodiments, the transmission mechanism 200 further comprises: and a bearing 220 rotatably connected to the housing 210, wherein a first end surface of the bearing 220 abuts against the housing 210, and a second end surface of the bearing 220 abuts against the preload member 110.

In this embodiment, the transmission mechanism 200 further includes a bearing 220, the bearing 220 corresponds to the second workpiece, a first end surface of the bearing 220 contacts the housing 210, after the preload element 110, the anti-loose element 120 and the connecting portion 130 are sequentially installed, the preload element 110 presses the second end surface of the bearing 220 to enable the first end surface of the bearing 220 to abut against the housing 210, so as to achieve axial positioning of the bearing 220, and on the basis, the bearing 220 can be kept at the predetermined installation position for a long time through locking action of the anti-loose element 120 and the connecting portion 130, so as to improve transmission safety and reliability of the transmission mechanism 200, and reduce failure rate of transmission components.

Specifically, the housing 210 is provided with a first protruding shaft, the preload member 110 is provided with a second protruding shaft, the first protruding shaft is inserted into the first end of the bearing 220, and the second protruding shaft is inserted into the second end of the bearing 220, so that the radial positioning of the bearing 220 is simultaneously completed through the housing 210 and the preload member 110, and the precise positioning of the bearing 220 is realized.

EXAMPLE five

An embodiment of the fifth aspect of the present invention provides a robot, including: such as the transmission mechanism 200 of any of the embodiments described above.

In this embodiment, a robot provided with the transmission mechanism 200 in any of the above embodiments is defined, so that the robot has the advantages of the transmission mechanism 200 in any of the above embodiments, and can achieve the technical effects that can be achieved by the transmission mechanism 200 in any of the above embodiments, and in order to avoid repetition, details are not repeated here.

Specifically, the transmission mechanism 200 is provided in a robot arm of the robot to achieve the motion of the robot arm.

It is to be understood that, in the claims, the specification and the drawings attached to the specification, the term "plurality" means two or more, and unless otherwise specified, the terms "upper", "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the purpose of describing the present invention more conveniently and simplifying the description, but not for the purpose of indicating or implying that the device or element referred to must have the specific orientation described, be constructed and operated in the specific orientation, and thus the description should not be construed as limiting the present invention; the terms "connect," "mount," "secure," and the like are to be construed broadly, and for example, "connect" may refer to a fixed connection between multiple objects, a removable connection between multiple objects, or an integral connection; the multiple objects may be directly connected to each other or indirectly connected to each other through an intermediate. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific situation of the above data.

In the claims, specification and drawings of the specification, the description of "one embodiment," "some embodiments," "specific embodiments," and so forth, is intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In the claims, the description and the drawings of the present application, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (15)

1. A positioning assembly, comprising:

a preload member including a first thread configured to connect to a first work piece, the preload member for positioning a second work piece on the first work piece;

an anti-loosening element abutting the preload element and including a second thread configured to engage the first workpiece, the first and second threads having opposite hand turns;

and the connecting part is connected with the preload piece and the anti-loosening piece and is used for preventing the preload piece and the anti-loosening piece from rotating relatively.

2. The positioning assembly of claim 1, wherein the preload member includes a threaded bore, and the coupling portion includes:

and the screw penetrates through the screw hole and is used for pressing and installing the anti-loosening piece on the pre-tightening piece.

3. The positioning assembly of claim 2,

the screw hole is a plurality of, and is a plurality of the screw hole encircles the pivot setting of pretensioning piece.

4. The positioning assembly of claim 3,

the plurality of screw holes are uniformly distributed on the same circle taking the rotating shaft of the preload piece as an axis.

5. The positioning assembly of claim 2, wherein the anti-loosening element includes a first through hole, the screw extending through the first through hole and abutting the anti-loosening element.

6. The positioning assembly of claim 5,

the loosening-preventing piece comprises a groove, and the groove faces to the tightening piece;

the groove surrounds the first through hole and is communicated with the first through hole.

7. The positioning assembly of claim 5,

the first through hole is a waist-shaped hole.

8. The positioning assembly of claim 7,

the number of the screw holes is more than or equal to that of the waist-shaped holes.

9. The positioning assembly of claim 2, further comprising:

the pressing plate comprises a second through hole, and the screw penetrates through the second through hole;

the anti-loosening piece is located between the pre-tightening piece and the pressure plate, and the screw is used for pressing and installing the anti-loosening piece on the pre-tightening piece through the pressure plate.

10. The positioning assembly of claim 9, wherein the pressure plate comprises:

a first segment portion abutting against the locking member;

the second section part is connected with the first section part and is spaced from the preload piece, and the second through hole is formed in the second section part.

11. Positioning assembly according to any one of claims 1 to 10,

the preload piece comprises a boss;

the anti-loosening piece is annular, and the anti-loosening piece is sleeved on the boss.

12. A transmission mechanism, comprising:

the positioning assembly of any one of claims 1-11;

a housing comprising third threads and fourth threads, the first threads engaged with the third threads, the second threads engaged with the fourth threads.

13. The transmission mechanism as in claim 12, wherein the housing includes a mounting slot, at least a portion of the preload member being received in the mounting slot.

14. The transmission mechanism as claimed in claim 12 or 13, further comprising:

the bearing, with the casing rotates to be connected, the first terminal surface of bearing with the casing butt, the second terminal surface of bearing with the pretension piece butt.

15. A robot, comprising:

a drive mechanism as claimed in any one of claims 12 to 14.

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