Rotary clamping self-locking mechanism

Abstract

The rotary clamping self-locking mechanism comprises a shell, a first clamping jaw, a second clamping jaw, a locking rod and a driving rod, the first clamping jaw and the second clamping jaw are arranged at the two ends of the shell correspondingly, and the first clamping jaw is slidably arranged on the shell. The first clamping jaw is provided with a locking groove, the locking rod is arranged in the locking groove, and the first end of the locking rod and the first clamping jaw are arranged in a relative rotation mode and form a first pivot point. The driving rod is rotatably arranged on the shell, and the driving rod is pivoted with the second end of the locking rod to form a second pivoting point, so that the locking rod is driven to move; when the driving rod rotates, the second pivoting point rotates along an arc, so that the locking rod pulls the first clamping jaw to slide; a datum line is virtually constructed in the length direction of the shell and passes through the first pivot point, and when the second pivot point is located on the right side of the datum line, the first clamping jaw is self-locked; when the second pivot point is located on the left side of the datum line, the first clamping jaw is unlocked. Compared with the prior art, the rotary clamping self-locking mechanism has the advantages that self-locking can be achieved, and clamping is more stable and firmer.

Description

Technical Field

[0001] This utility model relates to the field of clamping devices, and in particular to a rotary clamping self-locking mechanism. Background Technology

[0002] Traditional clamping devices typically use springs to tension two opposing jaws, thus securing the item. The clamping effectiveness depends on the spring's elasticity. During use, items often slip out due to spring aging or the high inertia of the clamped object. To achieve more stable clamping, some manufacturers use motors to drive the two opposing jaws to move and clamp the item. However, because the motor needs to provide a continuous holding torque to hold the phone, if the battery voltage is too low, the holding force provided is insufficient, and the phone can easily slip out.

[0003] Therefore, the aforementioned technical problems need to be solved. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a rotary clamping self-locking mechanism with stable clamping effect and convenient operation during clamping.

[0005] The rotary clamping self-locking mechanism provided by this utility model includes a housing, a first gripper, a second gripper, a locking rod, and a driving rod. The first gripper and the second gripper are respectively disposed at both ends of the housing, and the first gripper is slidably disposed relative to the housing. The first gripper is also provided with a locking groove, and the locking rod is disposed in the locking groove. The first end of the locking rod is rotatably disposed relative to the first gripper and forms a first pivot point. The driving rod is rotatably disposed on the housing, and the driving rod is pivotally connected to the second end of the locking rod and forms a second pivot point, thereby driving the locking rod to move in the locking groove. When the driving rod rotates, the second pivot point rotates along an arc, causing the first end of the locking rod to pull the first gripper to slide back and forth. An imaginary baseline is established along the length direction of the housing and passing through the first pivot point. When the second pivot point is located to the right of the baseline, both ends of the locking rod simultaneously abut against the locking groove and lock, causing the first gripper to self-lock. When the second pivot point is located to the left of the baseline, the locking rod releases and releases the first gripper.

[0006] Compared with existing technologies, the rotary clamping self-locking mechanism provided by this utility model has the following advantages: When clamping an object, the rotary clamping self-locking mechanism can achieve self-locking of the first clamp after clamping the object through the linkage between the drive rod, locking rod, and first clamp, making the clamping more stable and reliable, thereby preventing the clamped object from accidentally falling off. In addition, locking or unlocking the first clamp only requires rotating the drive rod, which is convenient to operate. It can ensure reliable clamping without the need for a motor or spring, and the structure is more streamlined, saving costs and making installation and disassembly more convenient.

[0007] Specifically, the locking groove includes a curved inner wall, and both ends of the locking rod have cam structures that cooperate with the curved inner wall to assist the first gripper in reciprocating movement or self-locking. This design makes the fit between the locking rod and the locking groove more precise and the pushing more efficient, thereby promoting the application of the rotary clamping self-locking mechanism in the field of precision control.

[0008] Specifically, the curved inner wall includes two mating sections that conform to the outer contour of the locking rod. The two mating sections are located on the left and right sides of the baseline, and the upper ends of the two mating sections overlap at the first pivot point to restrict a limiting space for accommodating the first end of the locking rod. A transition section is also provided between the two mating sections to assist the movement of the second end of the locking rod.

[0009] Specifically, the second gripper has an elongated groove extending along the length of the outer casing, and the elongated groove of the second gripper is connected to the outer casing by an adjusting screw, so that the position of the second gripper in the length direction of the outer casing is adjustable. This design facilitates adjustment of the position of the second gripper according to the size of the object being gripped, further improving the stability of the gripping.

[0010] Specifically, the end of the drive rod protruding from the housing has an expansion connection hole for attaching external components. This design facilitates the installation and fixation of the housing, making its application more versatile.

[0011] In some embodiments of this application, the rotary clamping self-locking mechanism further includes a fixed bracket, with one end of the drive rod protruding from the housing fixedly connected to the fixed bracket. This arrangement keeps the drive rod relatively fixed, allowing the housing to be moved to open or close the first gripper as needed, facilitating one-handed operation.

[0012] In some embodiments of this application, the end of the drive rod protruding from the housing is provided with a universal clamp for fixing the housing. This design facilitates easy clamping and fixing of the housing, making it more convenient to switch usage scenarios.

[0013] In some embodiments of this application, the end of the drive rod protruding from the housing is provided with a transmission groove for connecting to the motor output. This configuration allows the rotary clamping self-locking mechanism to be connected to an external motor to automate the clamping operation, freeing up hands in usage scenarios.

[0014] In some embodiments of this application, the rotary clamping self-locking mechanism further includes a drive motor, the output end of which is connected to the end of the drive rod protruding from the housing to drive the drive rod to rotate.

[0015] In some embodiments of this application, buffer pads are also provided on the opposing ends of the first and second grippers. This arrangement prevents the first and second grippers from scratching the surface of the item when gripping it, and the mutual compression between the buffer pads and the gripped item also makes the gripping more secure, thereby further improving the reliability of the gripping. Attached Figure Description

[0016] Figure 1 This is a perspective view of one embodiment of the present invention, showing the expansion connection hole provided on the drive rod.

[0017] Figure 2 This is a perspective view of another embodiment of the present invention, showing the end face of the outer casing away from the drive rod.

[0018] Figure 3 This is a perspective view of the first gripper clamping and self-locking after the outer shell is removed in Embodiment 1 of this utility model. It shows the positional relationship between the first gripper, the locking rod, and the drive rod at this time.

[0019] Figure 4 This is a perspective view of the first gripper when it is released after removing the outer shell, according to Embodiment 1 of this utility model. It shows the positional relationship between the first gripper, the locking rod, and the driving rod at this time.

[0020] Figure 5 This is a perspective view of the first gripper when the outer shell is removed and the first gripper is fully open and self-locking, showing the positional relationship between the first gripper, the locking rod and the driving rod at this time.

[0021] Figure 6 This is an exploded view of Embodiment 1 of this utility model.

[0022] Figure 7 This is a perspective view of Embodiment 2 of the present invention, showing the universal clamp provided on the drive rod.

[0023] Figure 8 This is a perspective view of Embodiment 3 of the present invention, showing the transmission groove on the drive rod for connecting the motor output end.

[0024] Figure 9 This is a perspective view of Embodiment 4 of the present invention, showing the operating protrusions provided on the opposing ends of the first gripper and the second gripper.

[0025] Figure 10 A schematic diagram of the rotary clamping self-locking mechanism provided in Embodiment 1 of this utility model, which uses the expansion connection hole on the drive rod to install and fix the outer shell.

[0026] Figure 11 A schematic diagram of the rotary clamping self-locking mechanism provided in Embodiment 2 of this utility model, which uses a universal clamp on the drive rod to easily install and fix the outer shell.

[0027] Figure 12 A schematic diagram of the rotary clamping self-locking mechanism provided in Embodiment 3 of this utility model, which is used in conjunction with a motor via a transmission groove on a drive rod.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1-First gripper, 11-Locking groove, 111-Curved inner wall, 122-Matching section, 113-Transition section, 2-Second gripper, 21-Elongated groove, 22-Adjusting screw, 3-Outer shell, 30-Cover plate, 31-Counterhead, 32-Hollow cavity, 4-Locking rod, 41-First end of locking rod, 42-Second end of locking rod, 43-Cam structure, 5-Drive rod, 50-End cap, 51-Expansion hole, 52-Universal chuck, 521-Clamping end, 522-Connecting hole, 53-Transmission groove, 531-Cross transmission groove, 532-Rectangular transmission protrusion, 6-Buffer pad, 7-Operating protrusion, A-First pivot point, B-Second pivot point, M-Baseline, N-Circular arc, T-First direction. Detailed Implementation

[0030] The following will combine Figures 1 to 12 The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0031] Example 1

[0032] Please see Figures 1 to 2 as well as Figures 3 to 6In this embodiment, the rotary clamping self-locking mechanism 100 includes a first gripper 1, a second gripper 2, a housing 3, a locking rod 4, and a driving rod 5. The first gripper 1 and the second gripper 2 are respectively disposed at both ends of the housing 3, and the first gripper 1 is slidably disposed relative to the housing 3. The first gripper 1 is also provided with a locking groove 11, and the locking rod 4 is disposed in the locking groove 11, with the first end 41 of the locking rod 4 rotatably disposed relative to the first gripper 1 to form a first pivot point A. The driving rod 5 is rotatably disposed on the housing 3, and the driving rod 5 is pivotally connected to the second end 42 of the locking rod 4 to form a second pivot point B, thereby driving the locking rod 4 to move in the locking groove 11. It should be noted that the first pivot point A and the second pivot point B are fictitious points for the convenience of clearly describing the movement process of the locking rod 4, and have been enlarged in the drawings for easy viewing, rather than two physical pivot points on the locking rod 4. Specifically, the second end 42 of the driving rod 5 and the locking rod 4 is pivotally connected by a pin 40, and the pin 40 is concentric with the second pivot point B. Specifically, the housing 3 includes a cover plate 30, in which the locking rod 4 is sandwiched between the driving rod 5 and the cover plate 30, thereby restricting the movement of the locking rod 4 in the direction perpendicular to the cover plate 30, so that the first end 41 of the locking rod 4 can only rotate around the first pivot point A within the locking groove 11. A countersunk hole 31 is provided on the housing 3, and the driving rod 5 is rotatably disposed within the countersunk hole 31. To further limit the movement of the driving rod 5, the rotary clamping self-locking mechanism 100 also includes an end cap 50, which is detachably connected to the housing 3 and limits the end of the driving rod 5 protruding from the housing 3. Furthermore, the detachable design of the end cap 50 facilitates quick replacement of parts on the protruding end face of the driving rod 5 from the housing 3, improving the interchangeability of parts. Therefore, when the drive rod 5 rotates, the second pivot point B rotates along an arc N defined by a countersunk hole 31 penetrating one side of the outer shell 3, causing the first end 41 of the locking rod 4 to press against the inner wall of the locking groove 11, thereby pulling the first gripper 1 to slide; along the length direction of the outer shell 3 and passing through the first pivot point A, a fictitious reference line M is established. When the second pivot point B is located to the right of the reference line M, when the item is gripped, both ends of the locking rod 4 simultaneously abut against the locking groove 11. At this time, the angle between the line connecting the first pivot point A and the second pivot point B and the reference line M is greater than 0, so that the second end 42 of the locking rod 4 is locked and the item will be gripped by the first gripper 1 and the second gripper 1. The claw 2 applies a reaction force to make the first claw 1 and the second claw 2 tend to move away from each other, thereby keeping the second end 42 of the locking rod 4 pressed against the inner wall of the locking groove 11, so that both ends of the locking rod 4 are locked, and the first claw 1 is self-locking at this time; when the second pivot point B is located to the left of the baseline M, the reaction force applied by the item to the first claw 1 and the second claw 2 can make the locking groove 11 of the first claw 1 push the second end 42 of the locking rod 4, and drive the first end 41 of the locking rod 4 and the drive rod 5 to rotate, so that the first claw 1 slides away from the second claw 2, and the first claw 1 is in the unlocked state at this time.

[0033] Further, please refer to Figures 3 to 5 The locking groove 11 has a curved inner wall 111, and both ends of the locking rod 4 have cam structures 43 that cooperate with the curved inner wall 111. Specifically, the curved inner wall 111 includes two mating sections 112 that match the outer contour of the locking rod 4. The two mating sections 112 are respectively located on the left and right sides of the reference line M, and the upper ends of the two mating sections 112 overlap at the first pivot point A and restrict a limiting space for accommodating the first end 41 of the locking rod 4. A transition section 113 is also provided between the two mating sections 112 to assist the movement of the second end 42 of the locking rod 4. Therefore, the rotation range of the first end 41 of the locking rod 4 is limited within the limiting space at the first pivot point A. The second end 42 of the locking rod 4 moves between the mating sections 112 on the left and right sides of the reference line M. When the first gripper 1 and the second gripper 2 are fully clamped, the cam structure 43 at the second end 42 of the locking rod 4 fits exactly into the mating section 112 on the right side of the reference line M. When it is necessary to drive the first gripper 1 and the second gripper 2 to move away from each other and open, the drive rod 5 needs to rotate along the first direction T. The second end 42 of the locking rod 4 gradually slides over the transition section 113 and moves towards the mating section 112 located to the left of the reference line M. This causes the first end 41 of the locking rod 4 to push the first gripper 1 upward, causing the first gripper 1 to gradually slide upward away from the second gripper 2, thus gradually opening. When the first end 42 of the locking rod 4 moves again to the mating section 112 located to the right of the reference line M, the first gripper 1 is fully open. At this time, it is no longer possible to drive the drive rod 5 to rotate along the first direction T. Both ends of the locking rod 4 are completely contained within the two mating sections 112 for self-locking. At this time, the first gripper 1 is also self-locked. In addition, when the locking rod 4 is self-locked, the curved inner wall 111 and the cam structure 43 abut against each other in line contact, resulting in less wear. Therefore, the relative movement of the first gripper 1 is more accurate and reliable. Therefore, the interaction between the curved inner wall 111 and the cam structure 43 can greatly assist the first gripper 1 in reciprocating movement or self-locking, making the pushing more efficient, thus making it suitable for the rotary clamping self-locking mechanism 100 to be applied to the field of precision control.

[0034] Further, please refer to Figure 6 The outer shell 3 also includes a hollow cavity 32, in which the first gripper 1 and the second gripper 2 are both disposed. This arrangement can restrict the relative movement between the first gripper 1 and the second gripper 2 within the outer shell 3, making the relative movement between the first gripper 1 and the second gripper 2 more stable.

[0035] Further, please refer to Figures 1 to 3The second gripper 2 is positionably mounted on the outer casing 3. Specifically, in this embodiment, the second gripper 2 is provided with an elongated groove 21, the extension direction of which is parallel to the length direction of the outer casing 3. The second gripper 2 is mounted on the outer casing 3 by an adjusting screw 22, thereby adjusting its position along the length direction of the outer casing 3 by the engagement of the adjusting screw 22 and the elongated groove 21, thus making it suitable for gripping items of various sizes. To ensure the adjustment effect, two elongated grooves 21 are used to ensure uniform force distribution and structural stability. In addition, this arrangement also allows for easy adjustment of the position of the second gripper 2 according to the size of the object being gripped, further improving the gripping stability.

[0036] Further, please refer to Figure 1 and Figure 10 The end of the drive rod 5 protruding from the outer casing 3 is provided with an expansion connection hole 51 for connecting external components. This design facilitates the installation and fixation of the outer casing 3, making its application more versatile. In this embodiment, there are two expansion connection holes 51, which are symmetrically arranged. The outer casing 3 is installed and fixed through the expansion connection holes 51 to the fixing bracket 200. At this time, the drive rod 5 is relatively fixed, and the reciprocating sliding of the first gripper 1 is achieved by moving the outer casing 3, making it more convenient for one-handed operation.

[0037] Further, please refer to Figure 1 The first gripper 1 and the second gripper 2 are further provided with buffer pads 6 on their opposing ends. In this embodiment, the end face of the buffer pad 6 facing the object being gripped has a smoothly transitioning curved surface. Of course, the end face of the buffer pad 6 facing the object being gripped can also be a flat surface, but a smoothly transitioning curved surface is more effective. This design allows the first gripper 1 and the second gripper 2 to avoid scratching the surface of the object when gripping it. At the same time, the mutual compression between the buffer pad 6 and the object being gripped makes the gripping more secure, thereby further improving the reliability of the gripping.

[0038] Example 2

[0039] Please see Figure 7 and Figure 11 The difference between this embodiment and Embodiment 1 is that the end of the drive rod 5 protruding from the outer casing 3 is provided with a universal clamp 52 for fixing the outer casing 3. Specifically, the universal clamp 52 has two clamping sections 521, and each clamping end 521 is provided with a connecting hole 522, thereby facilitating easy clamping and fixing of the outer casing 3. This arrangement makes it easier to easily clamp and fix the outer casing 3, making it more convenient to switch usage scenarios. In this example, the crossbar 300 is clamped between the two clamping ends 521 for simple fixing.

[0040] Example 3

[0041] Please see Figure 8 and Figure 12The difference between this embodiment and Embodiment 1 is that the end of the drive rod 5 protruding from the outer casing 3 is provided with a transmission groove 53 for connecting the motor output end. Specifically, the transmission groove 53 includes a cross-shaped transmission groove 531 and a rectangular transmission protrusion 532. This arrangement can better position the motor output end to ensure smooth and precise transmission. In this embodiment, the transmission groove 53 is externally connected to the drive motor 400, and the drive motor 400 is also provided with a support base 500 for further fixation. The drive motor 400 can be a servo motor that meets the usage requirements. In addition, since the rotary clamping self-locking mechanism 100 has a self-locking function, it can save the power consumed by the servo motor.

[0042] Example 4

[0043] Please see Figure 9 The difference between this embodiment and Embodiment 1 is that the end face of the second gripper 2 facing the first gripper 1 is also provided with an operating protrusion 7. This arrangement allows the rotary clamping self-locking mechanism 100 to press some buttons by operating the protrusion 7, thereby applying the rotary clamping self-locking mechanism 100 to communication control scenarios.

[0044] Compared with the prior art, the rotary clamping self-locking mechanism 100 provided by this utility model has the following advantages: When clamping an item, the rotary clamping self-locking mechanism 100 can achieve self-locking of the first clamping jaw 1 after clamping the item through the linkage between the drive rod 5, the locking rod 4, and the first clamping jaw 1, making the clamping more stable and reliable, thereby preventing the clamped item from accidentally falling off. In addition, the locking or unlocking of the first clamping jaw 1 is achieved through the relative rotation between the drive rod 5 and the outer shell 3, which is convenient to operate and can ensure reliable clamping without the need for a motor or spring. The structure is more streamlined, which saves costs and makes installation and disassembly more convenient.

[0045] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A rotary clamping self-locking mechanism, characterized in that, The rotating clamping self-locking mechanism comprises a shell, a first clamping jaw, a second clamping jaw, a locking rod and a driving rod. The first clamping jaw and the second clamping jaw are respectively arranged at two ends of the shell, and the first clamping jaw is arranged to be slidable relative to the shell. A locking groove is further arranged on the first clamping jaw, and the locking rod is arranged in the locking groove. A first end of the locking rod is arranged to be rotatable relative to the first clamping jaw and forms a first pivot point. The driving rod is rotatably arranged in the shell, and a second end of the locking rod is pivotally connected with the driving rod and forms a second pivot point, so that the locking rod moves in the locking groove. When the driving rod rotates, the second pivot point rotates along an arc, so that the first end of the locking rod pulls the first clamping jaw to slide. A reference line is virtually drawn along the length direction of the shell and through the first pivot point. When the second pivot point is located on the right side of the reference line, the two ends of the locking rod are locked against the locking groove at the same time and the first clamping jaw is self-locked. When the second pivot point is located on the left side of the reference line, the locking rod is released and the first clamping jaw is released.

2. The rotary clamp self-locking mechanism according to claim 1, wherein The locking groove comprises a curved inner wall, and the two ends of the locking rod have cam structures matched with the curved inner wall to assist the self-locking or releasing of the first clamping jaw.

3. The rotary clamp self-locking mechanism according to claim 2, wherein The curved inner wall comprises two matching sections matched with the outer contour of the locking rod. The two matching sections are respectively located on the left and right sides of the reference line, and the upper ends of the two matching sections coincide with each other at the first pivot point and limit a limiting space for accommodating the first end of the locking rod. A transition section is further arranged between the two matching sections to assist the movement of the second end of the locking rod.

4. The rotary clamp self-locking mechanism of claim 1, wherein, A long slot extending along the length direction of the shell is arranged on the second clamping jaw, and the long slot of the second clamping jaw is connected with the shell by an adjusting screw, so that the position of the second clamping jaw in the length direction of the shell is adjustable.

5. The rotary clamp self-locking mechanism of claim 1, wherein, An extension connection hole for external components is arranged on the end of the driving rod exposed from the shell.

6. The rotary clamp self-locking mechanism of claim 1, wherein, The rotating clamping self-locking mechanism further comprises a fixed support, and the end of the driving rod exposed from the shell is fixedly connected to the fixed support.

7. The rotary clamp self-locking mechanism of claim 1, wherein, A universal chuck for fixing the shell is arranged on the end of the driving rod exposed from the shell.

8. The rotary clamp self-locking mechanism of claim 1, wherein, A transmission groove for connecting the output end of the motor is arranged on the end of the driving rod exposed from the shell.

9. The rotary clamp self-locking mechanism of claim 1, wherein, The rotating clamping self-locking mechanism further comprises a driving motor, and the output end of the driving motor is connected with the end of the driving rod exposed from the shell to drive the driving rod to rotate.

10. The rotary clamp self-locking mechanism of claim 1, wherein, Buffer gaskets are further arranged on the facing ends of the first clamping jaw and the second clamping jaw.

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