A reverse wedge mechanism that converts forward pressure into reverse working motion

Abstract

This invention discloses a reverse wedge mechanism that converts forward pressure into reverse working motion, relating to the technical field of wedge mechanisms. The invention uses a rotating shell, a rotating table, and a drive connector to form a forward / reverse reversing structure, thereby switching the pressure applied in the vertical direction into a force in the reverse direction. Based on this, different structural combinations form a guiding structure, an orienting structure, and a reversing structure. Specifically, a protective rotating plate serves as the front drive structure, simultaneously switching the position of the two drive connectors, limiting the direction of the drive connectors during force conversion, and synchronously coordinating the adjustment of the lower structure's position. The lower structure consists of a nitrogen protection cylinder, used to stabilize the forward / reverse reversing structure during the switching action. This invention is applicable to the installation requirements of flanged wedges in various automotive stamping dies.

Description

Technical Field

[0001] This invention relates to the field of wedge mechanism technology, and specifically to a reverse wedge mechanism that converts forward pressure into reverse working motion. Background Technology

[0002] The following is a detailed explanation of the flanging / forming action in stamping dies: The lower die adds a lower pressure plate, which first presses down on the sheet metal. Only then does the flanging / forming insert in the lower die begin to move upward to complete the flanging or forming of the sheet metal. The flanging / forming insert requires the use of a wedge structure, which mainly uses the wedge structure to convert the direction of the stamping force into the stamping force required for the flanging or forming action.

[0003] Different stamping specifications require the selection of corresponding flanging / forming inserts and their installation on the wedge structure. The operating principle of the wedge structure is to convert vertical force into horizontal or inclined force. It should be noted that the flanging / forming action described in the first paragraph above requires the addition of multiple pressure sources such as nitrogen cylinders to provide vertical force and guide plates for sliding. This structure inevitably requires increasing the height of the mold, which leads to an increase in mold production costs.

[0004] On the other hand, if a wedge structure is used, multiple wedge structures of different specifications need to be selected according to the flanging / forming stroke during the stamping process. This requires sufficient installation space in the mold, which will also increase the mold production cost. Furthermore, it is difficult to apply to compact, small-volume molds. In addition, according to the motion process of the traditional wedge structure, the vertical force is first converted into the horizontal or inclined force, and then the horizontal or inclined force is converted into the punching force direction required for the corresponding flanging / forming action. The two conversion processes will affect the stability of the force conversion process. Summary of the Invention

[0005] The purpose of this invention is to provide a reverse wedge mechanism that converts forward pressure into reverse working motion, in order to solve the problems of high production cost, poor operational stability, or difficulty in meeting various stamping requirements in current stamping dies for flanging / forming operations.

[0006] The objective of this invention can be achieved through the following technical solution: a reverse wedge mechanism that converts forward pressure into reverse working motion, comprising a mounting plate, on which an outer shell and a rotating shell are mounted, the rotating shell being located inside the outer shell, and a rotating platform being provided on the rotating shell, the rotating platform having a hemispherical cross-section, and connecting ball heads being mounted on both sides of the upper surface of the rotating platform, the two connecting ball heads being arranged in a mirror symmetrical manner along the vertical plane of the center point of the rotating platform, and a drive connector being provided on the connecting ball head;

[0007] The two drive connectors are respectively configured as a pressure-bearing part and a reversing part. A protective rotating plate is provided on the upper surface of the outer shell. The drive connectors pass through the protective rotating plate upwards. A connecting strip is installed on the upper surface of the outer shell. The center point of the connecting strip is on the same vertical axis as the center point of the rotary table. A directional ball sleeve is installed at the center point of the lower surface of the connecting strip. The lower end of the directional ball sleeve is spherical, and the center point of the spherical lower end of the directional ball sleeve coincides with the center point of the rotary table. The lower end of the directional ball sleeve is movably connected to the rotary table. A vertically arranged directional ball rod is provided in the directional ball sleeve. The directional ball rod is fixedly connected to the center point of the protective rotating plate, and the directional ball rod is rotatably connected to the connecting strip.

[0008] Further configuration: the connecting strip is located in the middle of the two drive connectors, and a directional plug is provided directly above the connecting strip. The lower side of the directional plug is polygonal, and a slot corresponding to the directional plug is opened at the upper end of the directional ball rod. A fastening screw is provided between the directional plug and the connecting strip.

[0009] Further configuration: an installation ring is installed on the inner position of the protective rotating plate corresponding to the drive connector, and four inner arc spring frames are installed on the inner wall of the installation ring. The four inner arc spring frames are arranged in a circular array along the center point of the installation ring. The drive connector is cylindrical, and an inward arc groove corresponding to the inner arc spring frame is opened on the outer circumference of the drive connector.

[0010] Further configuration: the diameter of the inner curved surface of the mounting ring is larger than the diameter of the outer curved surface of the drive connector, and the cross-section of the inner arc spring frame is curved in an arc shape along the direction close to the drive connector.

[0011] Further configuration: a vertically arranged linkage support rod is installed on the directional ball stick; a positioning rotating plate is rotatably installed on the lower surface of the mounting plate inside the rotating housing; the end of the linkage support rod is connected to the center point of the positioning rotating plate; two protective nitrogen cylinders are installed on the positioning rotating plate; a vertically upward connecting ball stick is installed on the output end of the protective nitrogen cylinder; and an outer ball sleeve corresponding to the connecting ball stick is installed on the lower surface of the rotating table.

[0012] The configuration is further defined as follows: the position of the protective nitrogen cylinder corresponds to the position of the connecting ball head, and the center point of the connecting ball rod and the center point of the connecting ball head are on the same vertical axis.

[0013] The configuration is further defined as follows: the linkage rod passes downward through the rotating platform and the rotating housing in sequence, and the rotating platform and the rotating housing are provided with clearance holes at the positions corresponding to the linkage rod, and the diameter of the clearance hole in the rotating platform is larger than the diameter of the linkage rod.

[0014] A further feature is provided: an anti-cavity groove is provided on the inner wall of the rotating housing corresponding to the position of the connecting rod and the outer ball sleeve.

[0015] The configuration is further defined as follows: multiple inwardly fitting arc-shaped frames are installed on the outer circumferential wall of the linkage support rod inside the rotary table. The lower curved surface of the inwardly fitting arc-shaped frames is in contact with the inner circumferential wall inside the rotary table, and the cross-section of the inwardly fitting arc-shaped frames is a downwardly curved arc shape. The multiple inwardly fitting arc-shaped frames are arranged in a circular array along the center point of the linkage support rod.

[0016] The present invention has the following beneficial effects:

[0017] 1. The wedge mechanism proposed in this invention is suitable for different installation requirements of flanging / forming wedges in automotive stamping dies. It mainly uses a rotary table, drive connectors and a rotating housing to form a forward and reverse reversing structure. Two of the drive connectors are set as the pressure-bearing part and the reverse part, respectively, to switch the vertical downward force to the vertical upward force. The various single-piece structures are installed in a compact manner. Unlike the wedge structure currently used, it only has a single force-changing process, "saving" the force-changing process, thereby improving the operational stability of the wedge mechanism proposed in this invention, and does not require the addition of multiple auxiliary structures.

[0018] 2. Further explanation: With the rotary table and rotating shell as the main structure, auxiliary components such as a directional ball sleeve, a directional ball rod, and a protective rotating plate are added. Various auxiliary structures are formed through combinations of these components. Specifically, the rotation of the protective rotating plate switches the position of the aforementioned forward / reverse reversing structure. Simultaneously, the rotation of the protective rotating plate coordinates with the position of the lower structure, which consists of a protective nitrogen cylinder. At the same time, the fixed-position directional ball sleeve limits the rotation of the rotary table, ensuring its rotation. The purpose is to stabilize the overall structure through the operation of multiple structural components. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a reverse wedge mechanism that converts forward pressure into reverse working motion, as proposed in this invention.

[0021] Figure 2This is a cross-sectional view of the outer shell component in a reverse wedge mechanism that converts forward pressure into reverse working motion, as proposed in this invention.

[0022] Figure 3 This is a cross-sectional view of a reverse wedge mechanism that converts forward pressure into reverse working motion, as proposed in this invention.

[0023] Figure 4 This is a cross-sectional view of the protective rotating plate component in a reverse wedge mechanism that converts forward pressure into reverse working motion, as proposed in this invention.

[0024] Figure 5 This is a cross-sectional view of the rotary table component in a reverse wedge mechanism that converts forward pressure into reverse working motion, as proposed in this invention.

[0025] Figure 6 This is a cross-sectional view of the driving connector in a reverse wedge mechanism that converts forward pressure into reverse working motion, as proposed in this invention.

[0026] Figure 7 This is a cross-sectional view of the rotating housing and rotating table in a reverse wedge mechanism that converts forward pressure into reverse working motion, as proposed in this invention.

[0027] In the diagram: 1. Mounting plate; 2. Outer shell; 3. Protective rotating plate; 4. Drive connector; 5. Connecting strip; 6. Clear slot; 7. Rotating shell; 8. Orientation plug; 9. Rotary table; 10. Connecting ball head; 11. Orientation ball rod; 12. Outer ball sleeve; 13. Inwardly fitting arc frame; 14. Linkage support rod; 15. Protective nitrogen cylinder; 16. Connecting ball rod; 17. Positioning rotating plate; 18. Orientation ball sleeve; 19. Mounting ring; 20. Inner arc spring frame; 21. Inwardly recessed arc groove. Detailed Implementation

[0028] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1

[0030] For the wedge structure used in the flanging / forming action of current stamping dies, various wedge blocks of different specifications need to be selected according to the specific flanging / forming action. Furthermore, multiple nitrogen cylinders providing vertical force and guide plates for sliding are also required. This structure inevitably necessitates increasing the height of the die, leading to increased die production costs. On the other hand, the traditional wedge structure's operation involves first converting the vertical force into a horizontal or inclined force, and then converting that horizontal or inclined force into the punching force direction required for the flanging / forming action. These two conversion processes affect the stability of the force conversion process. To address this, the following technical solution is proposed:

[0031] Reference Figures 1-7 The reverse wedge mechanism in this embodiment, which converts forward pressure into reverse working motion, includes a mounting plate 1. A housing 2 and a rotating housing 7 are mounted on the mounting plate 1. The rotating housing 7 is located inside the housing 2 and a rotating platform 9 is provided on the rotating housing 7. The cross-section of the rotating platform 9 is hemispherical, and connecting ball heads 10 are installed on both sides of the upper surface of the rotating platform 9. The two connecting ball heads 10 are mirror-symmetrically arranged along the vertical plane of the center point of the rotating platform 9, and a drive connector 4 is provided on the connecting ball head 10.

[0032] Two drive connectors 4 are respectively configured as a pressure-bearing part and a reversing part. A protective rotating plate 3 is provided on the upper surface of the outer shell 2. The drive connector 4 passes through the protective rotating plate 3. A connecting strip 5 is installed on the upper surface of the outer shell 2. The center point of the connecting strip 5 is on the same vertical axis as the center point of the rotating table 9. A directional ball sleeve 18 is installed at the center point of the lower surface of the connecting strip 5. The lower end of the directional ball sleeve 18 is spherical, and the center point of the spherical lower end of the directional ball sleeve 18 coincides with the center point of the rotating table 9. The lower end of the directional ball sleeve 18 is movably connected to the rotating table 9. A vertically arranged directional ball rod 11 is provided in the directional ball sleeve 18. The directional ball rod 11 is fixedly connected to the center point of the protective rotating plate 3, and the directional ball rod 11 is rotatably connected to the connecting strip 5.

[0033] The connecting strip 5 is located in the middle of the two drive connectors 4, and a directional plug 8 is provided directly above the connecting strip 5. The lower side of the directional plug 8 is polygonal, and the upper end of the directional ball rod 11 has a slot corresponding to the directional plug 8. A fastening screw is provided between the directional plug 8 and the connecting strip 5.

[0034] Operating principle: First of all, it should be noted that the wedge mechanism proposed in this invention is not limited to use in automotive stamping dies, but is applicable to a variety of corresponding devices. It is mainly used to switch the direction of force. In this embodiment, the wedge mechanism proposed in this invention is mainly applied to automotive stamping dies.

[0035] To further clarify: the overall structure is installed according to the flanging / forming action position in the automotive stamping die. Corresponding structures are connected to the two drive connectors 4. One drive connector 4 is used to connect to the force-bearing mechanism, and the other drive connector is used to connect to the reverse structure. During use, the movement of the automotive stamping die is adjusted according to... Figure 3 To further explain, if the drive connector 4 on the left is the pressure-bearing part, then when the drive connector 4 at the pressure-bearing part is subjected to downward pressure, the rotary table 9 rotates on the rotary housing 7 with its own center point as the pivot point, and the drive connector 4 and the connecting ball head 10 will also rotate. Then the drive connector 4 on the right "tilts" upward, thereby switching to vertical upward pressure. In this way, a forward and reverse reversing structure is formed. The difference from the current inclined structure is that the overall structure only has a single process of force switching, thereby improving the stability during operation.

[0036] It should also be noted that the main structures in the overall structure are the rotating shell 7, the rotating table 9, the drive connector 4, and the protective nitrogen cylinder 15. There is no need to add multiple structures, thereby reducing the mold production cost.

[0037] On the other hand, theoretically, the rotary table 9 and the rotating housing 7 are only in a state of free movement. In order to match the action position of the flip plate / shaping, the position of the two drive connectors 4 can be reversed by switching the direction of the protective rotating plate 3.

[0038] Example 2

[0039] This embodiment is an improved version based on the technical features proposed in Embodiment 1:

[0040] Improvement Scheme 1: An installation ring 19 is installed inside the drive connector 4 corresponding to the protective rotating plate 3. Four inner arc spring frames 20 are installed on the inner wall of the installation ring 19. The four inner arc spring frames 20 are arranged in a circular array along the center point of the installation ring 19. The drive connector 4 is cylindrical, and the outer circumference of the drive connector 4 is provided with an inwardly concave arc groove 21 corresponding to the inner arc spring frame 20. The diameter of the inner curved surface of the installation ring 19 is larger than the diameter of the outer curved surface of the drive connector 4. The cross-section of the inner arc spring frame 20 is curved arc-shaped along the direction close to the drive connector 4.

[0041] The purpose of the improvement is as follows: In the case of the forward and reverse reversing structure in Embodiment 1, the drive connector 4 performs "passive" movement through the connecting ball head 10. For this purpose, it is necessary to add a mounting ring 19 at the connection between the protective rotating plate 3 and the drive connector 4, and limit the inner curved surface diameter of the mounting ring 19 to be greater than the outer curved surface diameter of the drive connector 4. The gap between the mounting ring 19 and the drive connector 4 is used as a compensation gap during the "passive" movement of the drive connector 4 to ensure normal movement.

[0042] However, it is necessary to further restrict the addition of the inner arc spring frame 20 and the inner constricted arc groove 21. The travel distance of the inner arc spring frame 20 when it is "pressed" by the drive connector 4 is used as the compensation distance during the movement of the drive connector 4. This can ensure that the drive connector 4 is not interfered with when it is "passively" moving, and also ensure that the final position is in the vertically upward direction.

[0043] Improvement Scheme 2: A vertically arranged linkage rod 14 is installed on the directional ball rod 11. A positioning plate 17 is rotatably installed on the lower surface of the mounting plate 1 inside the rotating housing 7. The end of the linkage rod 14 is connected to the center point of the positioning plate 17. Two protective nitrogen cylinders 15 are installed on the positioning plate 17. A vertically upward connecting ball rod 16 is installed on the output end of the protective nitrogen cylinder 15. An outer ball sleeve 12 corresponding to the connecting ball rod 16 is installed on the lower surface of the rotating table 9. The setting position of the protective nitrogen cylinder 15 corresponds to the setting position of the connecting ball head 10. The center point of the connecting ball rod 16 and the center point of the connecting ball head 10 are on the same vertical axis.

[0044] The purpose of the improvement is to add two protective nitrogen cylinders 15 as a rear protective structure for the movement process of the rotary table 9. This can not only buffer the impact force on the rotary table 9 during the pressure movement, but also use the two protective nitrogen cylinders 15 to make the rotary table 9 reset during the reset process.

[0045] Based on the directional ball stick 11, a linkage support rod 14 is added. The linkage support rod 14 is used as the movable structure to control the positioning rotating plate 17. Combined with the technical content in Embodiment 1, when the protective rotating plate 3 rotates, the directional plug 8 needs to be pulled out. After the protective rotating plate 3 rotates to a certain angle, the directional plug 8 and the fastening screw are used again to fix the protective rotating plate 3 on the connecting strip plate 5.

[0046] When the protective rotating plate 3 rotates, the directional ball rod 11 and the linkage support rod 14 synchronously drive the lower positioning rotating plate 17 to rotate to the corresponding angle, ensuring that the position of the protective nitrogen cylinder 15 is always in sync with the drive connector 4. Therefore, when the left drive connector 4 is pressed down, the rotating table 9 rotates counterclockwise. Thus, the protective nitrogen cylinder 15 on the left is in a compressed state, and the protective nitrogen cylinder 15 on the right is in a telescopic state, thereby improving the effect of "improving stability during operation" proposed in Embodiment 1.

[0047] Improvement Scheme 3: The linkage support rod 14 passes downward through the rotating platform 9 and the rotating housing 7 in sequence. The rotating platform 9 and the rotating housing 7 are provided with clearance holes at the positions corresponding to the linkage support rod 14, and the diameter of the clearance hole in the rotating platform 9 is larger than the diameter of the linkage support rod 14. The rotating housing 7 is provided with clearance grooves 6 at the positions corresponding to the positions of the connecting ball rod 16 and the outer ball sleeve 12. Multiple inwardly fitting arc strip frames 13 are installed on the outer circumferential wall of the linkage support rod 14 inside the rotating platform 9. The lower curved surface of the inwardly fitting arc strip frame 13 is in contact with the inner circumferential wall inside the rotating platform 9, and the cross-section of the inwardly fitting arc strip frame 13 is a downwardly curved arc shape. Multiple inwardly fitting arc strip frames 13 are arranged in a ring array along the center point of the linkage support rod 14.

[0048] The purpose of the improvement is as follows: During the operation of the overall mechanism, the rotating housing 7, the linkage rod 14 and the directional ball rod are in a relatively fixed state, while the rotating table 9 is in a movable state. To address this, an clearance groove 6 is proposed to provide clearance area for the drive connector 4 to switch working positions, thereby avoiding interference.

[0049] Similarly, clearance holes need to be added to the rotary table 9. The purpose is to avoid interference from the linkage rod 14 during the rotation of the rotary table 9. To further ensure the stability of the linkage rod 14, multiple inwardly fitting arc frame 13s are added. When the inwardly fitting arc frame 13 is in a fixed state, when the rotary table 9 rotates, for example, when the rotary table 9 rotates counterclockwise, the inwardly fitting arc frame 13 located on the right side is deformed by the pressure from the rotary table 9, thereby using the elasticity of the inwardly fitting arc frame 13 itself to buffer the overall rotary table 9.

[0050] Improvement Scheme 4: A directional ball sleeve 18 is installed on the lower side of the connecting strip 5.

[0051] The purpose of the improvement is to: recombine Figure 3 In general, the rotary table 9 can rotate freely in the rotary housing 7, but the directional ball sleeve 18 connected to the connecting strip 5 plays a directional role for the rotary table 9. Specifically, the directional ball sleeve 18 is in a movable connection with the rotary table 9, and the lower center point of the directional ball sleeve 18 is restricted to coincide with the center point of the rotary table 9. The purpose is to restrict the movement of the rotary table 9 with the directional ball sleeve 18 to avoid the problem of misaligned rotation.

[0052] In summary, a forward / reverse reversing structure is formed by a rotating housing, a rotating platform, and a drive connector, thereby switching the pressure in the vertical direction to the force in the opposite direction. Based on this, different structural combinations form a guiding structure, an orienting structure, and a reversing structure. Specifically, the protective rotating plate is the front drive structure, which, while protecting the rotating plate and switching the direction, simultaneously switches the positions of the two drive connectors, limits the direction of the drive connectors during the force switching process, and synchronously and collaboratively adjusts the position of the lower structure. The lower structure consists of a nitrogen protection cylinder, which is used to stabilize the forward / reverse reversing structure during the switching action. This structure can be applied to the installation requirements of the flange wedge in different automotive stamping dies.

[0053] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A reverse wedge mechanism that converts forward pressure into reverse working motion, comprising a mounting plate (1), characterized in that, The mounting plate (1) is equipped with an outer shell (2) and a rotating shell (7). The rotating shell (7) is located inside the outer shell (2), and a rotating platform (9) is provided on the rotating shell (7). The cross-section of the rotating platform (9) is hemispherical, and connecting ball heads (10) are installed on both sides of the upper surface of the rotating platform (9). The two connecting ball heads (10) are arranged in a mirror symmetrical manner along the vertical plane of the center point of the rotating platform (9), and a drive connector (4) is provided on the connecting ball head (10). The two drive connectors (4) are respectively set as a pressure-bearing part and a reverse part. A protective rotating plate (3) is provided on the upper surface of the outer shell (2). The drive connector (4) passes through the protective rotating plate (3) upward. A connecting strip (5) is installed on the upper surface of the outer shell (2). The center point of the connecting strip (5) and the center point of the rotating table (9) are on the same vertical axis. A directional ball sleeve (18) is installed at the center point of the lower surface of the connecting strip (5). The lower end of the directional ball sleeve (18) is spherical. The center point of the spherical lower end of the directional ball sleeve (18) coincides with the center point of the rotating table (9). The lower end of the directional ball sleeve (18) is movably connected to the rotating table (9). A vertically arranged directional ball rod (11) is provided in the directional ball sleeve (18). The directional ball rod (11) is fixedly connected to the center point of the protective rotating plate (3). The directional ball rod (11) is rotatably connected to the connecting strip (5). A vertically arranged linkage rod (14) is installed on the directional ball rod (11). A positioning plate (17) is rotatably installed on the lower surface of the mounting plate (1) inside the rotating housing (7). The end of the linkage rod (14) is connected to the center point of the positioning plate (17). Two protective nitrogen cylinders (15) are installed on the positioning plate (17). A vertically upward connecting ball rod (16) is installed on the output end of the protective nitrogen cylinder (15). A corresponding connecting ball rod is installed on the lower surface of the rotating table (9). The outer ball sleeve (12) of the rod (16) is located at the position of the protective nitrogen cylinder (15) corresponding to the position of the connecting ball head (10). The center point of the connecting ball rod (16) and the center point of the connecting ball head (10) are on the same vertical axis. The linkage support rod (14) passes through the rotating table (9) and the rotating housing (7) in sequence. The rotating table (9) and the rotating housing (7) are provided with clearance holes at the positions corresponding to the linkage support rod (14), and the diameter of the clearance hole in the rotating table (9) is larger than the diameter of the linkage support rod (14).

2. The reverse wedge mechanism according to claim 1, which converts forward pressure into reverse working motion, is characterized in that, The connecting strip (5) is located in the middle of the two drive connectors (4), and a directional plug (8) is provided directly above the connecting strip (5). The lower side of the directional plug (8) is polygonal. The upper end of the directional ball rod (11) is provided with a slot corresponding to the directional plug (8). A fastening screw is provided between the directional plug (8) and the connecting strip (5).

3. The reverse wedge mechanism according to claim 1, which converts forward pressure into reverse working motion, is characterized in that, The protective rotating plate (3) has an installation ring (19) installed inside the drive connector (4). Four inner arc spring frames (20) are installed on the inner wall of the installation ring (19). The four inner arc spring frames (20) are arranged in a ring array along the center point of the installation ring (19). The drive connector (4) is cylindrical, and the outer circumference of the drive connector (4) is provided with an inward arc groove (21) corresponding to the inner arc spring frame (20).

4. A reverse wedge mechanism for converting forward pressure into reverse working motion according to claim 3, characterized in that, The inner curved surface diameter of the mounting ring (19) is larger than the outer curved surface diameter of the drive connector (4), and the cross-section of the inner arc spring frame (20) is curved in the direction close to the drive connector (4).

5. A reverse wedge mechanism according to claim 1, characterized in that, An anti-cavity groove (6) is provided on the inner wall of the rotating shell (7) corresponding to the position of the connecting rod (16) and the outer ball sleeve (12).

6. A reverse wedge mechanism according to claim 5, characterized in that, The linkage support rod (14) is located on the outer circumferential wall inside the rotating platform (9) and multiple inwardly fitting arc frame (13) are installed. The lower curved surface of the inwardly fitting arc frame (13) is in contact with the inner circumferential wall inside the rotating platform (9), and the cross-section of the inwardly fitting arc frame (13) is a downwardly curved arc shape. Multiple inwardly fitting arc frames (13) are arranged in a ring array along the center point of the linkage support rod (14).

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