Elastic connecting device and variable stiffness realizer

Abstract

The embodiment of the invention provides an elastic connecting device. The elastic connecting device comprises an outer sleeve part with a middle axis; a mounting hole is formed in the outer sleeve part, and is provided with a plurality of first grooves which are sunken away from the middle axis; the inner sleeve part is mounted in the middle of the outer sleeve part and provided with a mounting part extending away from the middle axis, and a plurality of second grooves are formed in the mounting part; the plurality of first grooves and the plurality of second grooves are in one-to-one correspondence, and openings of the plurality of first grooves and the plurality of second grooves correspondingly abut against each other to form overload protection grooves; each overload protection groove is provided with an elastic piece part, the elastic piece parts extend in the direction away from the outer sleeve part, the elastic piece parts are made of amorphous alloy, a plurality of first grooves which are sunken in the direction away from the middle axis are formed in the installation hole of the outer sleeve part, and openings of the first grooves and openings of the second grooves abut against each other to form the overload protection grooves. And an elastic sheet part can be arranged in the overload protection groove, so that the connecting device can bear relatively large torque.

Description

Technical Field

[0001] The present application belongs to the technical field of connection devices, and in particular to an elastic connection device and a variable stiffness implementer. Background Art

[0002] In the prior art, elastic connectors are used in many occasions. If the existing elastic connectors can withstand a large torque, they cannot provide timely feedback for a small torque. If the elastic connectors are sensitive to a small torque, they cannot have the ability to carry a large load.

[0003] To address the above problems, no effective solution has been proposed yet.

[0004] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present invention and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because these solutions are described in the background technology section of the present invention. Summary of the invention

[0005] The purpose of this application is to provide an elastic connection device and a variable stiffness implementer to solve the above problems.

[0006] The application provides an elastic connection device, comprising:

[0007] An outer sleeve having a central axis;

[0008] A mounting hole is formed inside the outer sleeve, and the mounting hole has a plurality of first grooves recessed away from the middle axis;

[0009] An inner sleeve portion installed in the middle of the outer sleeve portion, the inner sleeve portion having a mounting portion extending away from the middle axis, and a plurality of second grooves formed on the mounting portion;

[0010] The first grooves correspond to the second grooves one by one, and the openings of the first grooves correspond to the openings of the second grooves to form overload protection grooves.

[0011] Any of the overload protection slots is equipped with a spring piece portion, and a plurality of the spring piece portions extend in a direction away from the outer sleeve portion, and the plurality of the spring piece portions are made of amorphous alloy.

[0012] Preferably, a plurality of the elastic sheet parts are symmetrically mounted on the inner sleeve part.

[0013] Preferably, the inner sleeve portion is bent in a direction away from the middle axis to form a plurality of mounting portions, and the plurality of elastic sheet portions are mounted on the plurality of mounting portions.

[0014] Preferably, a plurality of spring sheet parts are installed on any of the installation parts, and the plurality of spring sheet parts are parallel to each other.

[0015] Preferably, the cross-sectional shape of the elastic sheet portion is rectangular.

[0016] Preferably, the inner sleeve portion is detachably connected to the outer sleeve portion via a spring sheet portion.

[0017] Preferably, a plurality of through holes are symmetrically formed on the outer sleeve.

[0018] Preferably, the edges of the mounting portion are chamfered.

[0019] A variable stiffness implementer, wherein the variable stiffness implementer is equipped with an elastic connection device as claimed in any one of claims 1 to 8

[0020] Preferably, a plurality of spring pieces are connected in the elastic connection device, and the spring pieces are made of amorphous alloy.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. In the process of mutual cooperation between the inner sleeve and the outer sleeve, the present invention arranges a second groove on the mounting portion of the inner sleeve, and arranges a plurality of first grooves recessed away from the middle axis on the mounting hole of the outer sleeve. The openings of the first groove and the second groove conflict with each other to form an overload protection groove. A spring piece portion can be arranged in the overload protection groove, so that the connecting device can withstand a larger torque.

[0023] 2. The present invention arranges multiple spring pieces on any mounting portion to be parallel to each other, thereby preventing interference between adjacent spring pieces when the multiple spring pieces are deformed.

[0024] 3. The present invention adopts an amorphous alloy to make the spring piece part, so that the spring piece part can completely recover its deformation when subjected to a large torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of this application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 It is an overall structural diagram of an elastic connection device and a variable stiffness implementer provided in the embodiments of this application;

[0027] Figure 2 This is an installation diagram of an elastic connection device and a spring piece portion of a variable stiffness implementer provided in the embodiments of this application;

[0028] Figure 3 This is an installation diagram of an elastic connection device and an inner sleeve of a variable stiffness implementer provided in the embodiments of this application;

[0029] Figure 4 This is a first slot structure diagram of an elastic connection device and a variable stiffness implementer provided in the embodiments of this application;

[0030] Figure 5 It is a side structural diagram of an outer sleeve of an elastic connection device and a variable stiffness implementer provided in the embodiments of this application;

[0031] Figure 6 It is a structural diagram of an elastic connection device and an inner sleeve of a variable stiffness implementer provided in the embodiments of this application;

[0032] Figure 7 This is a cross-sectional structural diagram of the inner sleeve of an elastic connection device and a variable stiffness implementer provided in the embodiments of this application.

[0033] In the figure: 1, outer sleeve; 11, through hole; 12, mounting hole; 13, first groove; 2, inner sleeve; 21, second groove; 22, mounting portion; 3, spring piece portion. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be described clearly and completely below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0035] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "upper", "middle", "lower", "inner", "outer", "front", "back", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. The terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following describes an implementation method of the present invention based on its overall structure.

[0036] Reference Figure 1 As shown, an embodiment of the present application provides an elastic connection device, comprising:

[0037] An outer sleeve 1 having a central axis;

[0038] The outer sleeve 1 has a mounting hole 12 formed inside, and the mounting hole 12 has a plurality of first grooves 13 recessed away from the middle axis.

[0039] The inner sleeve 2 is installed in the middle of the outer sleeve 1, and has a mounting portion 22 extending away from the middle axis. The mounting portion 22 is provided with a plurality of second grooves 21;

[0040] The plurality of first grooves 13 correspond to the plurality of second grooves 21 one by one, and the openings of the plurality of first grooves 13 and the plurality of second grooves 21 correspond to each other and collide with each other to form an overload protection groove;

[0041] Any overload protection slot is equipped with a spring piece portion 3 , and the plurality of spring piece portions 3 extend in a direction away from the outer sleeve portion. The plurality of spring piece portions 3 are made of amorphous alloy.

[0042] according to Figure 1 A person skilled in the art may configure the outer sleeve 1 and the inner sleeve 3 to be connected to each other, and configure a plurality of spring pieces 4 on the inner sleeve 3, thereby effectively making the connection device have connection elasticity.

[0043] Specifically, those skilled in the art can set the overall shape of the outer sleeve 1 to be annular. A mounting hole 12 is provided in the middle of the outer sleeve 1. The inner sleeve 2 can be mounted in the middle of the outer sleeve 1 through the mounting hole 12.

[0044] In one embodiment, a connecting groove may be provided on the inner wall of the outer sleeve 1. Figure 1 A mounting portion 22 is provided on the side wall of the inner sleeve 2 facing the outer sleeve.

[0045] Structurally, the connection groove is recessed in the direction opposite to the position of the middle axis, and the mounting portion 22 also extends in the direction away from the middle axis. It can be understood that the outer sleeve 1 is provided with a plurality of connection grooves, and the inner sleeve 2 is also provided with a plurality of mounting portions 22.

[0046] In this embodiment, a person skilled in the art can arrange multiple connection grooves on the outer sleeve 1 at intervals. The multiple mounting portions 22 arranged on the inner sleeve 2 are also arranged at intervals corresponding to the connection grooves. That is, the multiple mounting portions 22 cooperate with the multiple connection grooves to complete the installation of the inner sleeve 2.

[0047] It is understandable that in the above process, when the inner sleeve 2 and the outer sleeve 1 cooperate with each other, a person skilled in the art can set a second groove 21 on the mounting portion 22 of the inner sleeve 2. A plurality of first grooves 13 recessed away from the middle axis are set on the mounting hole 12 of the outer sleeve 1.

[0048] With the above structure, during the matching process between the mounting portion 22 and the connecting groove, the openings of the first groove 13 and the second groove 21 abut against each other to form an overload protection groove.

[0049] The spring piece 3 may be disposed in the overload protection groove formed by the first groove 13 and the second groove 21. It is understood that the spring piece 3 disposed in the overload protection groove may abut against the inner wall of the overload protection groove.

[0050] In this embodiment, a person skilled in the art can use an amorphous alloy to make the spring piece part. It is understandable that the use of amorphous alloy can make the spring piece part 3 have better elasticity. Further, the spring piece part 3 made of amorphous alloy can make the spring piece part 3 completely recover the deformation when subjected to a large torque.

[0051] In summary, those skilled in the art can arrange the outer sleeve 1 and the inner sleeve 2 to be connected to each other. A first groove 13 is arranged on the outer sleeve 1, and a second groove 21 is arranged on the inner sleeve 2. The first groove 13 and the second groove 21 cooperate with each other to form an overload protection groove. The spring piece 3 can be installed through the overload protection groove, and the spring piece 3 is made of an amorphous alloy.

[0052] Preferably, a plurality of spring pieces 3 are symmetrically mounted on the inner sleeve 2. Specifically, in the process of setting the outer sleeve 1 and the inner sleeve 2, it can be set that any connection groove on the outer sleeve 1 is provided with a plurality of first grooves 13. Correspondingly, a plurality of second grooves 21 are provided on any mounting portion 22 on the inner sleeve 2. The plurality of first grooves 13 and the corresponding plurality of second grooves 21 openings are correspondingly abutted to form a plurality of overload protection grooves. The plurality of spring pieces 3 can be mounted through the plurality of overload protection grooves.

[0053] In this embodiment, multiple spring pieces 3 may be arranged in a symmetrical structure. Specifically, the same number of spring pieces 3 may be installed in symmetrical overload protection slots. This can effectively make the multiple spring pieces 3 bear an average torque when the connecting device is subjected to torque.

[0054] In the above arrangement, the deformation process and deformation amount of the multiple spring pieces 3 in the process of bearing the torque remain the same, thereby effectively reducing the vibration of the connecting device during use and effectively extending the service life of the connecting device.

[0055] Preferably, the inner sleeve 2 is bent in a direction away from the middle axis to form a plurality of mounting portions 22, and the plurality of spring pieces 3 are mounted on the plurality of mounting portions 22. That is, those skilled in the art can arrange the plurality of mounting portions 22 on the inner sleeve 2 to be distributed at intervals. In one embodiment, the intervals between the plurality of mounting portions 22 are the same.

[0056] Preferably, a plurality of spring pieces 3 are mounted on any mounting portion 22, and the plurality of spring pieces 3 are parallel to each other. In the above embodiment, those skilled in the art can set a plurality of overload protection grooves on any mounting portion 22, and then mount the plurality of spring pieces 3.

[0057] In this embodiment, the multiple spring pieces 3 on any mounting portion 22 remain parallel to each other, so that when the multiple spring pieces 3 are deformed, interference between adjacent spring pieces 3 can be avoided.

[0058] Preferably, the cross-sectional shape of the spring piece part 3 is a rectangle, so that the spring piece part 3 can be effectively installed. It can be understood that in the above embodiment, the spring piece part 3 can be mass-produced, and multiple spring piece parts 3 can be directly installed during use.

[0059] Preferably, the inner sleeve 2 is connected to the outer sleeve 1 by interference clamping or welding. In this embodiment, those skilled in the art can arrange the inner sleeve 2 to be connected to the outer sleeve 1 by interference clamping or welding, thereby meeting the installation requirements of the inner sleeve 2 and the outer sleeve 1 in various scenarios.

[0060] Preferably, a plurality of through holes 11 are symmetrically formed on the outer sleeve 1. Figure 1 , those skilled in the art can set a plurality of through holes 11 for connection. Thus, the elastic device can be stably fixedly connected with the external parts.

[0061] Furthermore, in the arrangement of the mounting portion 22, preferably, the borders of the mounting portion 22 are chamfered, thereby effectively avoiding stress concentration at the borders of the mounting portion 22, thereby effectively extending the service life of the connection device.

[0062] According to the above structure, the outer sleeve 1 and the inner sleeve 2 are detachably connected to each other, and the spring sheet part can also be detached and replaced, thereby making the use of the connecting device more convenient.

[0063] The present application also provides a variable stiffness implementer, in which an elastic connection device is installed. By arranging the connection device as described above in the variable stiffness implementer, the variable stiffness implementer can change the torque and transmit more smoothly and stably.

[0064] Preferably, a plurality of spring pieces 3 are connected in the elastic connection device, and the spring pieces 3 are made of elastic material, and can be made of amorphous alloy, thereby significantly improving the stability of the variable stiffness implementer in torque transmission.

[0065] In the above-mentioned embodiment, the outer edge of the outer wall of the second groove 21 in the elastic connection device changes in shape in accordance with the "Y 3 =kx*(1 / e)x", where Y 3 is the radian curve, k is the constant 2, e is the base of the natural logarithm, and x is the torque angle minute.

[0066] In the above structure, a plurality of spring pieces 3 are installed in any overload protection slot, that is, those skilled in the art can add spring pieces 3 according to the requirements of stiffness in the use environment, thereby improving the working stiffness of the connection device.

[0067] During the processing of the inner sleeve, the outer sleeve and the spring sheet, they can be processed separately by a mold, thereby achieving fine processing of the inner and outer edge angles of the second groove, thereby meeting the requirements for the connection stiffness of the elastic connection device.

[0068] Although different specific embodiments are mentioned in the content of this application, this application is not limited to the situations described in the industry standards or embodiments, etc. Some industry standards or slightly modified implementation plans based on the implementation of the custom methods or embodiments can also achieve the same, equivalent or similar, or predictable implementation effects after deformation of the above embodiments. The embodiments of data acquisition, processing, output, judgment methods, etc. after these modifications or deformations can still fall within the scope of the optional implementation plans of this application.

[0069] Although the present application has been described through embodiments, those skilled in the art will appreciate that there are many modifications and changes to the present application without departing from the spirit of the present application. It is intended that the attached embodiments include these modifications and changes without departing from the present application.

Claims

1. An elastic connection device, characterized in that: include: An outer sleeve having a central axis; A mounting hole is formed inside the outer sleeve, and the mounting hole has a plurality of first grooves recessed away from the middle axis; An inner sleeve portion installed in the middle of the outer sleeve portion, the inner sleeve portion having a mounting portion extending away from the middle axis, and a plurality of second grooves formed on the mounting portion; The plurality of first grooves correspond to the plurality of second grooves one by one, and the openings of the plurality of first grooves and the plurality of second grooves correspond to each other and collide with each other to form an overload protection groove; Any of the overload protection slots is equipped with an elastic sheet portion, and a plurality of the elastic sheet portions extend in a direction away from the outer sleeve portion, and the plurality of the elastic sheet portions are made of elastic material.

2. The elastic connection device according to claim 1, characterized in that: A plurality of the elastic sheet parts are symmetrically welded on the inner sleeve part.

3. The elastic connection device according to claim 1, characterized in that: The inner sleeve portion is bent in a direction away from the middle axis to form a plurality of mounting portions, and the plurality of elastic sheet portions are mounted on the plurality of mounting portions.

4. The elastic connection device according to claim 3, characterized in that: A plurality of spring pieces are mounted on any of the mounting portions, and the plurality of spring pieces are parallel to each other.

5. The elastic connection device according to claim 3, characterized in that: The cross-sectional shape of the elastic sheet portion is rectangular.

6. The elastic connection device according to claim 1, characterized in that: The inner sleeve portion is connected to the outer sleeve portion by interference clamping or welding.

7. The elastic connection device according to claim 1, characterized in that: The outer sleeve is symmetrically provided with a plurality of through holes.

8. The elastic connection device according to claim 3, characterized in that: The outer edge contour of the mounting portion is extended to be "Y 3 =kx*(1 / e)x”.

9. A variable stiffness implementer, characterized in that: The variable stiffness implementer is installed with an elastic connection device as described in any one of claims 1-8.

10. The variable stiffness implementer according to claim 9, characterized in that: The elastic connection device is connected with a plurality of spring pieces, and the spring pieces are made of amorphous alloy.

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