Detachable shaft mechanism

Abstract

The utility model discloses a detachable shaft mechanism which comprises a shaft body and at least one connecting chuck, at least one clamping groove is formed in the peripheral side of at least one end of the shaft body, and the clamping groove is provided with an arc-shaped wall and two stress walls parallel to the axial direction of the shaft body. The arc-shaped wall is connected with the two stress walls, the arc-shaped wall and the two stress walls jointly form the clamping groove, the connecting chuck comprises a chuck body and a plug connector, the chuck body is provided with an installation space, a first arc-shaped wall and two opposite walls are formed on the periphery of the plug connector, the two opposite walls are arranged in parallel in a back-to-back mode, and the first arc-shaped wall is connected with the first arc-shaped wall. The plug connector is clamped in the corresponding clamping groove in the mode that at least parts of the two opposite walls correspond to the two stress walls respectively, and the first arc wall corresponds to the arc-shaped wall. Compared with a common connection mode, a stress contact area is changed from a point to a surface, acting force borne by the shaft body is dispersed, stress concentration is avoided, impact force borne by the shaft body is relieved, and the service life of the shaft body is prolonged.

Description

Technical Field

[0001] This application relates to the field of shaft connection technology, and more particularly to detachable shaft mechanisms. Background Technology

[0002] To facilitate the disassembly and reassembly of the driven object and the driving mechanism, such as for loading, unloading, and replacing the driven object, a shaft mechanism is used to connect the two. This shaft mechanism typically includes a connecting chuck and a shaft body. The end of the shaft body has an arc groove, and the chuck body has an installation space. A cylindrical pin of the connecting chuck is positioned within the installation space. The shaft body is inserted into the installation space at its end, and the cylindrical pin within the installation space is inserted into the arc groove, connecting the shaft body and the connecting chuck as a single unit. The driving mechanism drives the connecting chuck to rotate, which in turn causes the shaft body to rotate, thereby causing the driven object fitted onto the shaft body to rotate.

[0003] In designs where the connecting chuck and shaft are detachable, gaps often exist between the cylindrical pin and the arc groove due to machining errors. This causes the shaft and connecting chuck to rotate as a whole, and when the shaft wobbles and collides with the cylindrical pin, the area of ​​force contact between the two on the radial surface of the shaft is a single point, i.e., the cylindrical pin and the edge of the arc groove are in point contact. This results in the impact force on the shaft being too concentrated, causing wear or deformation of the part of the shaft forming the edge of the arc groove. This will seriously reduce the service life of the shaft and increase the cost of use. Utility Model Content

[0004] To address the aforementioned technical problems and achieve at least one advantage of this application, this application provides a detachable shaft mechanism, the detachable shaft mechanism comprising:

[0005] A shaft body, wherein at least one end of the shaft body has at least one groove formed on its circumferential side, the groove having an arc-shaped wall and two force-bearing walls that are parallel to the axial direction of the shaft body, the arc-shaped wall connecting the two force-bearing walls and forming the groove together with the two force-bearing walls;

[0006] At least one connecting chuck, the connecting chuck including a chuck body and a connector, the chuck body having an installation space, the connector being installed in the installation space, the connecting chuck being rotatable, the shaft being assembled with the corresponding connecting chuck in such a way that one end of the shaft is engaged with the installation space of the chuck body and the connector in the installation space is engaged with a slot at the corresponding end, and the shaft rotates together with the connecting chuck. The outer periphery of the connector forms a first arc wall and two opposing walls, the first arc wall connecting the two opposing walls, the two opposing walls being arranged in parallel and opposite directions, and the connector being engaged with the corresponding slot in such a way that at least part of the two opposing walls correspond to the two force-bearing walls respectively, and the first arc wall corresponds to the arc wall.

[0007] According to one embodiment of this application, at least one end of the shaft is provided with three slots that are spaced apart radially thereon.

[0008] According to one embodiment of this application, the chuck body includes a snap-fit ​​body and a locking body. One end of the snap-fit ​​body has a snap-fit ​​groove and an opening located in the depth direction of the snap-fit ​​groove and communicating with the snap-fit ​​groove. The snap-fit ​​groove is used to install one end of the shaft. The plug-in member is installed on either the snap-fit ​​body or the locking body. The locking body is movably installed on the snap-fit ​​body in a manner that can cover or open the opening. When the locking body opens the opening, one end of the shaft can move into or out of the snap-fit ​​groove from the opening. When the locking body covers the opening, the locking body is connected to the snap-fit ​​body as a whole by at least one fastener. The locking body and the snap-fit ​​body together form the installation space.

[0009] According to one embodiment of this application, the locking body is configured to move in a direction parallel to the axial direction of the shaft provided in the snap-fit ​​groove to move to or away from the open surface.

[0010] According to one embodiment of this application, each of the slots extends a predetermined length from the end face of the corresponding end of the shaft in a direction parallel to the axial direction of the shaft. The snap-fit ​​body has a socket, the socket being opposite to the end face of the shaft disposed in the snap-fit ​​slot. The plug is detachably installed on the snap-fit ​​body in such a way that it is partially inserted into the socket. When the opening is opened, the shaft moves into the snap-fit ​​slot so as to snap onto the plug with the slot at one end corresponding to the plug.

[0011] According to one embodiment of this application, the snap-fit ​​body further has a mating groove communicating with the socket. The groove opening corresponds to the open opening. The mating groove has a curved wall and two opposing walls arranged in parallel. The curved wall connects the two opposing walls and together with the two opposing walls forms the mating groove. The plug-in also has a second curved wall, which is opposite to the first curved wall. The first curved wall and the second curved wall are both connected to the two opposing walls to form the peripheral wall of the plug-in as a whole. The plug-in is inserted into the mating groove on the side of the mating groove away from the socket and partially extends into the socket. The plug-in is inserted into the mating groove and the snap-fit ​​groove in such a way that each of the opposing walls partially corresponds to one of the opposing walls and partially corresponds to one of the force-bearing walls, the first curved wall corresponds to the curved wall, and the second curved wall corresponds to the curved wall.

[0012] According to one embodiment of this application, the center of gravity of the snap-fit ​​body is located on the side of the snap-fit ​​groove away from the opening, and the snap-fit ​​body is kept in a position with the opening facing upward under its own weight when not subjected to external force.

[0013] According to one embodiment of this application, the snap-fit ​​body includes a snap-fit ​​main body and at least one limiting portion. The snap-fit ​​groove, the opening, the insertion hole, and the mating groove are all formed at one end of the snap-fit ​​main body. The limiting portion is formed on the snap-fit ​​main body and is adjacent to the opening. The locking clamp body is sleeved on the snap-fit ​​main body and can move along the snap-fit ​​main body to approach or move away from the opening. The limiting portion is located in the direction in which the locking clamp body moves closer to the opening. The limiting portion is used to prevent the locking clamp body from continuing to move after it reaches the surface of the opening.

[0014] According to one embodiment of this application, the detachable shaft mechanism includes at least one support base, and each of the snap-fit ​​bodies is rotatably mounted on one of the support bases.

[0015] According to one embodiment of this application, the support base includes a base body and at least one bearing, the bearing being installed between the base body and the snap-fit ​​body, the bearing being used to support the snap-fit ​​body and reduce friction when the snap-fit ​​body rotates. Attached Figure Description

[0016] Figure 1 A schematic diagram of the detachable shaft mechanism described in this application is shown.

[0017] Figure 2 A cross-sectional view of the detachable shaft mechanism described in this application is shown from one perspective.

[0018] Figure 3 A perspective view of the connecting chuck of the detachable shaft mechanism described in this application is shown in one state.

[0019] Figure 4 A perspective view of the connecting chuck of the detachable shaft mechanism described in this application in another state is shown.

[0020] Figure 5 An exploded view of a partial structure of the connecting chuck of the detachable shaft mechanism described in this application is shown.

[0021] Figure 6 A cross-sectional view of the detachable shaft mechanism described in this application is shown from another perspective. Detailed Implementation

[0022] The following description is intended to disclose this application and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of this application defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of this application.

[0023] Those skilled in the art should understand that, in the disclosure of this application, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this application.

[0024] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0025] refer to Figures 1 to 3 A preferred embodiment of the detachable shaft mechanism according to this application will be described in detail below. The detachable shaft mechanism includes a shaft body 10 and at least one connecting clamp 20. At least one end of the shaft body 10 has at least one slot 101 formed on its periphery. The connecting clamp 20 includes a clamp body 21 and a connector 22. The clamp body 21 has a mounting space 2101, and the connector 22 is mounted in the mounting space 2101. The connecting clamp 20 is rotatable. The shaft body 10 is assembled with the corresponding connecting clamp 20 such that one end of the shaft body 10 is engaged with the mounting space 2101 of the clamp body 21, and the connector 22 within the mounting space 2101 is engaged with a slot 101 at the corresponding end. The shaft body 10 rotates together with the connecting clamp 20.

[0026] Preferably, the shaft 10 is implemented as an air shaft.

[0027] It is worth mentioning that the slot 101 has an arc-shaped wall 1011 and two force-bearing walls 1012, both parallel to the axial direction of the shaft 10. The arc-shaped wall 1011 connects to the two force-bearing walls 1012 and together with the two force-bearing walls 1012 forms the slot 101. The outer periphery of the connector 22 forms a first arc-shaped wall 221 and two opposing walls 222. The first arc-shaped wall 221 connects to the two opposing walls 222, and the two opposing walls 222 are arranged parallel to each other. The connector 22 is engaged with the corresponding slot 101 in such a way that at least part of the two opposing walls 222 correspond to the two force-bearing walls 1012, and the first arc-shaped wall 221 corresponds to the arc-shaped wall 1011.

[0028] In this way, when the shaft 10 and the connecting clamp 20 rotate as a whole and the shaft 10 shakes, the force-bearing contact area between the shaft 10 and the plug 22 is the corresponding part of the force-bearing wall 1012 and the opposite wall 222. Compared with the common connection method, the force-bearing contact area on the radial surface of the shaft 10 is changed from a point to a surface, which disperses the force on the shaft 10, avoids stress concentration, and thus alleviates the impact force on the shaft 10, reduces the degree of wear and deformation of the shaft 10, and extends its service life.

[0029] Preferably, at least one end of the shaft 10 is provided with three slots 101 that are radially spaced apart, so that after long-term use, when the force-bearing wall 1012 of one of the slots 101 is deformed by impact force, the shaft 10 can be removed, and the shaft 10 can be rotated to make one of the remaining slots 101 engage with the connector 22, thereby further improving the service life of the shaft 10 based on the structural design of the connector 22 and the slots 101.

[0030] In addition, by setting multiple slots 101, when the end of the shaft 10 corresponds to the connector 22 at a position other than the slot 101, or when the opening of a slot 101 does not fully correspond to the connector 22, a slight rotation of the shaft 10 can quickly align a slot 101 with the connector 22, thereby achieving rapid installation and increasing the convenience of operation.

[0031] Preferably, each of the two ends of the shaft 10 forms at least one slot 101, and two connecting clamps 20 are provided. The two connecting clamps 20 are respectively engaged with the two ends of the shaft 10 to be assembled with the shaft 10 as a whole, so as to improve the stability of the shaft 10 when the shaft 10 is supported by supporting the connecting clamps 20. In addition, one of the connecting clamps 20 is connected to a drive mechanism. The drive mechanism drives the corresponding connecting clamp 20 to rotate, thereby driving the shaft 10 automatically.

[0032] refer to Figures 3 to 4 Furthermore, the chuck body 21 includes a snap-fit ​​body 211 and a locking clamp body 212. One end of the snap-fit ​​body 211 forms a snap-fit ​​groove 21101 and an opening 21102 located in the depth direction of the snap-fit ​​groove 21101 and communicating with the snap-fit ​​groove 21101. The snap-fit ​​groove 21101 is used to install one end of the shaft body 10. The plug-in member 22 is installed on either the snap-fit ​​body 211 or the locking clamp body 212. The locking clamp body 212 is movably installed on the snap-fit ​​body 211 in a manner that can cover or open the opening 21102.

[0033] When the locking clamp 212 covers the opening 21102, the locking clamp 212 and the snap-fit ​​body 211 together form the mounting space 2101, so that one end of the shaft 10 is confined in the mounting space 2101, and the plug 22 is at least partially held in the mounting space 2101 to engage with the slot 101 of the shaft 10. When the locking clamp 212 opens the opening 21102, one end of the shaft 10 can move into or out of the slot 21101 from the opening 21102 to detach from the snap-fit ​​body 211.

[0034] It is worth mentioning that when the locking body 212 covers the opening 21102, the locking body 212 is connected to the snap-fit ​​body 211 by at least one fastener to fix the locking body 212 and ensure that the end of the shaft 10 is effectively locked in the installation space 2101.

[0035] Preferably, the locking body 212 is configured to move in a direction parallel to the axial direction of the shaft 10 disposed in the snap-fit ​​groove 21101 to move to or away from the surface of the opening 21102, thereby covering or opening the opening 21102.

[0036] Preferably, each of the slots 101 extends a predetermined length from the end face of the corresponding end of the shaft 10 in a direction parallel to the axial direction of the shaft 10. In this way, the shaft 10 can be inserted into the connector 22 with either the port of the slot 101 corresponding to the connector 22, or with the opening of the slot 101 corresponding to the connector 22, to suit the structural design of the connecting clamp 20 and facilitate assembly and disassembly.

[0037] Preferably, the connector 22 is mounted on the snap-fit ​​body 211. When the opening 21102 is covered or opened, the connector 22 remains in the mounting space 2101 or the snap-fit ​​groove 21101.

[0038] Preferably, the plug-in 22 and the snap-fit ​​body 211 are integrally formed.

[0039] refer to Figure 5In one embodiment, the snap-fit ​​body 211 has a socket 21103, which is opposite to the end face of the shaft 10 disposed in the snap-fit ​​groove 21101. The connector 22 is detachably installed on the snap-fit ​​body 211 in such a way that it is partially inserted into the socket 21103, so that it can be replaced if the connector 22 is damaged. In addition, when the opening 21102 is opened, the shaft 10 moves into the snap-fit ​​groove 21101 with the slot 101 at one end corresponding to the connector 22 to snap into the connector 22.

[0040] In a preferred embodiment of the previous embodiment, the snap-fit ​​body 211 further has a mating groove 21104 communicating with the insertion hole 21103, the opening of the mating groove 21104 corresponding to the opening 21102. The mating groove 21104 has a curved wall 211041 and two opposing walls 211042 arranged in parallel. The curved wall 211041 connects to the two opposing walls 211042 and together with the two opposing walls 211042 forms the mating groove 21104. The plug-in member 22 also has a second curved wall 223, the second curved wall 223 being opposite to the first curved wall 221. Both the first curved wall 221 and the second curved wall 223 connect to the two opposing walls 222 to integrally form the peripheral wall of the plug-in member 22. The connector 22 is inserted into the mating groove 21104 on the side of the mating groove 21104 away from the socket 21103 and partially extends into the socket 21103. The connector 22 is inserted into the mating groove 21104 and the slot 101 in such a way that each of the opposing walls 222 partially corresponds to an opposing wall 211042 and partially corresponds to a force-bearing wall 1012, the first arc wall 221 corresponds to the arc-shaped wall 1011, and the second arc wall 223 corresponds to the curved arc wall 211041.

[0041] In this way, based on the insertion and engagement of the connector 22 and the socket 21103, and through the engagement of the connector 22 and the connecting groove 21104, the contact area between the connector 22 and the snap-fit ​​body 211 is increased, thereby reducing the impact on the snap-fit ​​body 211 when the shaft 10 and the connecting clamp 20 rotate as a whole, thus improving its service life.

[0042] In another embodiment, the connector 22 is mounted on the locking body 212. The connector 22 moves together with the locking body 212 to insert into or withdraw from the sidewall of the snap-fit ​​body 211 corresponding to the end face of the shaft 10 mounted in the snap-fit ​​groove 21101. When the opening 21102 is opened, and one end of the shaft 10 is placed in a slot 101 with one of the slots 101 located in the moving direction of the connector 22, the locking body 212 moves in a direction parallel to the axial direction of the shaft 10 to insert into the slot 101 from its port, thereby assembling the locking body 212 with the shaft 10.

[0043] It is worth mentioning that the center of gravity of the snap-fit ​​body 211 is located on the side of the snap-fit ​​groove 21101 away from the opening 21102. When the whole is not subjected to external force, the snap-fit ​​body 211 is kept in a position with the opening 21102 facing upward by its own weight. This ensures that the shaft 10 can be effectively supported by the snap-fit ​​body 211, so that when the shaft 10 is disassembled or assembled, the operator can move the locking clamp body 212 and the shaft 10 one hand at a time, saving manpower and making the operation convenient.

[0044] refer to Figures 3 to 5 Furthermore, the snap-fit ​​body 211 includes a snap-fit ​​main body 2111 and at least one limiting portion 2112. The snap-fit ​​groove 21101, the opening 21102, the insertion hole 21103, and the engagement groove 21104 are all formed at one end of the snap-fit ​​main body 2111. The limiting portion 2112 is formed on the snap-fit ​​main body 2111 and is adjacent to the opening 21102. The locking clamp 212 is sleeved on the snap-fit ​​main body 2111 and can move along the snap-fit ​​main body 2111 to approach or move away from the opening 21102. The limiting portion 2112 is located in the direction in which the locking clamp 212 moves closer to the opening 21102. The limiting portion 2112 is used to prevent the locking clamp 212 from continuing to move after it reaches the surface of the opening 21102, so as to prevent the locking clamp 212 from separating from the snap-fit ​​main body 2111.

[0045] Preferably, when there are two connecting clamps 20, the locking bodies 212 of the two connecting clamps 20 move closer to or further away from each other to move to or away from the corresponding opening 21102 surface, so as to lock or unlock the shaft 10 installed on the snap-fit ​​body 211.

[0046] refer to Figure 6Furthermore, the detachable shaft mechanism includes at least one support base 30, and each of the snap-fit ​​bodies 211 is rotatably mounted on one of the support bases 30 so that the support base 30 supports the connecting clamp 20 that snaps into the shaft body 10.

[0047] Preferably, the support base 30 includes a base 31 and at least one bearing 32, the bearing 32 being installed between the base 31 and the snap-fit ​​body 211, the bearing 32 being used to support the snap-fit ​​body 211 and reduce friction when the snap-fit ​​body 211 rotates.

[0048] Preferably, when there are two connecting clamps 20, there are two support bases 30, and the snap-fit ​​body 211 of each connecting clamp 20 is rotatably mounted on one of the support bases 30 to provide stable support for the shaft 10.

[0049] Those skilled in the art should understand that the embodiments of this application described above and shown in the accompanying drawings are merely examples and do not limit the scope of this application. The advantages of this application have been fully and effectively implemented. The functional and structural principles of this application have been demonstrated and explained in the embodiments, and any variations or modifications can be made to the implementation of this application without departing from the stated principles.

Claims

1. A detachable shaft mechanism, characterized in that, The detachable shaft mechanism includes: A shaft body, wherein at least one end of the shaft body has at least one groove formed on its circumferential side, the groove having an arc-shaped wall and two force-bearing walls that are parallel to the axial direction of the shaft body, the arc-shaped wall connecting the two force-bearing walls and forming the groove together with the two force-bearing walls; At least one connecting chuck, the connecting chuck including a chuck body and a connector, the chuck body having an installation space, the connector being installed in the installation space, the connecting chuck being rotatable, the shaft being assembled with the corresponding connecting chuck in such a way that one end of the shaft is engaged with the installation space of the chuck body and the connector in the installation space is engaged with a slot at the corresponding end, and the shaft rotates together with the connecting chuck. The outer periphery of the connector forms a first arc wall and two opposing walls, the first arc wall connecting the two opposing walls, the two opposing walls being arranged in parallel and opposite directions, and the connector being engaged with the corresponding slot in such a way that at least part of the two opposing walls correspond to the two force-bearing walls respectively, and the first arc wall corresponds to the arc wall.

2. The detachable shaft mechanism according to claim 1, characterized in that, At least one end of the shaft is provided with three slots that are spaced apart radially thereon.

3. The detachable shaft mechanism according to claim 1, characterized in that, The chuck body includes a snap-fit ​​body and a locking body. One end of the snap-fit ​​body has a snap-fit ​​groove and an opening located in the depth direction of the snap-fit ​​groove and communicating with the snap-fit ​​groove. The snap-fit ​​groove is used to install one end of the shaft. The plug-in is installed on either the snap-fit ​​body or the locking body. The locking body is movably installed on the snap-fit ​​body in a manner that can cover or open the opening. When the locking body opens the opening, one end of the shaft can move into or out of the snap-fit ​​groove from the opening. When the locking body covers the opening, the locking body is connected to the snap-fit ​​body as a whole by at least one fastener. The locking body and the snap-fit ​​body together form the installation space.

4. The detachable shaft mechanism according to claim 3, characterized in that, The locking body is configured to move in a direction parallel to the axial direction of the shaft provided in the snap-fit ​​groove to move to or away from the open surface.

5. The detachable shaft mechanism according to claim 4, characterized in that, Each of the slots extends a predetermined length from the end face of the corresponding end of the shaft in a direction parallel to the axial direction of the shaft. The snap-fit ​​body has a socket that is opposite to the end face of the shaft disposed in the snap-fit ​​slot. The plug is detachably installed in the snap-fit ​​body in such a way that it is partially inserted into the socket. When the opening is opened, the shaft moves into the snap-fit ​​slot so that the opening of one of the slots at one end corresponds to the plug to engage with the plug.

6. The detachable shaft mechanism according to claim 5, characterized in that, The snap-fit ​​body also has a mating groove communicating with the socket. The opening of the mating groove corresponds to the open end. The mating groove has a curved wall and two opposing walls arranged in parallel. The curved wall connects the two opposing walls and together with the two opposing walls forms the mating groove. The plug-in also has a second curved wall, which is opposite to the first curved wall. The first and second curved walls are both connected to the two opposing walls to form the peripheral wall of the plug-in as a whole. The plug-in is inserted into the mating groove on the side of the mating groove away from the socket and partially extends into the socket. The plug-in is inserted into the mating groove and the snap-fit ​​groove in such a way that each opposing wall partially corresponds to an opposing wall and partially corresponds to a force-bearing wall, the first curved wall corresponds to the curved wall, and the second curved wall corresponds to the curved wall.

7. The detachable shaft mechanism according to claim 6, characterized in that, The center of gravity of the snap-fit ​​body is located on the side of the snap-fit ​​groove away from the opening, and the snap-fit ​​body is kept in a position with the opening facing upward under its own weight when no external force is applied.

8. The detachable shaft mechanism according to claim 7, characterized in that, The snap-fit ​​body includes a snap-fit ​​main body and at least one limiting part. The snap-fit ​​groove, the opening, the insertion hole, and the mating groove are all formed at one end of the snap-fit ​​main body. The limiting part is formed on the snap-fit ​​main body and is adjacent to the opening. The locking clamp is sleeved on the snap-fit ​​main body and can move along the snap-fit ​​main body to approach or move away from the opening. The limiting part is located in the direction in which the locking clamp moves closer to the opening. The limiting part is used to prevent the locking clamp from continuing to move after it reaches the surface of the opening.

9. The detachable shaft mechanism according to claim 3, characterized in that, The detachable shaft mechanism includes at least one support base, and each of the snap-fit ​​bodies is rotatably mounted on one of the support bases.

10. The detachable shaft mechanism according to claim 9, characterized in that, The support includes a base and at least one bearing, which is installed between the base and the snap-fit ​​body. The bearing is used to support the snap-fit ​​body and reduce friction when the snap-fit ​​body rotates.

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