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] The invention relates to the field of clamping devices, and in particular to a rotary clamping self-locking mechanism. Background Art

[0002] Traditional clamping devices generally use springs to tighten the two opposing clamping jaws to clamp the object. The clamping effect depends on the elastic force of the spring. This type of clamping device often causes the object to fall off during use due to aging of the spring or the large inertia of the clamped object. In order to make the clamping effect more stable, some manufacturers use motors to drive the two opposing clamping jaws to move to clamp the object. However, because the motor needs to provide a continuous holding torque to clamp the phone, if the battery voltage is too low, the holding force provided is small and the phone is easy to fall off.

[0003] Therefore, the above technical problems need to be solved. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a rotary clamping self-locking mechanism which has a stable clamping effect and is easy to operate during clamping.

[0005] The rotary clamping self-locking mechanism provided by the present invention 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 slidably arranged relative to the shell; a locking groove is also provided on the first clamping jaw, the locking rod is arranged in the locking groove, and the first end of the locking rod and the first clamping jaw are relatively rotatable and form a first pivot point; the driving rod is rotatably arranged on the shell, and the driving rod is pivotally connected to the second end of the locking rod to form 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, so that the first end of the locking rod pulls the first clamping jaw to slide back and forth; a reference line is fictitious along 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 reference line, the two ends of the locking rod are simultaneously abutted against the locking groove and locked to make the first clamping jaw self-locking; when the second pivot point is located on the left side of the reference line, the locking rod is released and releases the first clamping jaw.

[0006] Compared with the prior art, the rotary clamping self-locking mechanism provided by the present invention has the following beneficial effects: when clamping an object, the rotary clamping self-locking mechanism can make the first clamping jaw self-lock after clamping the object through the linkage between the driving rod, the locking rod and the first clamping jaw, so that the clamping is more stable and reliable, thereby preventing the clamped object from accidentally falling off. In addition, the locking or releasing of the first clamping jaw only requires rotating the driving rod, which is convenient to operate, can ensure reliable clamping without setting a motor or spring, and has a more streamlined structure, which can save costs and make 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 clamping jaw to reciprocate or self-lock. This arrangement makes the cooperation 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 matching sections that match 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 overlap each other at the first pivot point and limit the limited space for accommodating the first end of the locking rod, and a transition section is also provided between the two matching sections to assist the movement of the second end of the locking rod

[0009] Specifically, the second clamping jaw is provided with a long groove extending along the length direction of the shell, and the long groove of the second clamping jaw is connected to the shell by an adjustment screw, so that the position of the second clamping jaw in the length direction of the shell is adjustable. Such a setting facilitates the adjustment of the position of the second clamping jaw according to the size of the clamped object, further improving the clamping stability.

[0010] Specifically, an expansion connection hole for an external component is provided at one end of the driving rod exposed from the housing. Such a configuration facilitates the installation and fixing of the housing, making the use scenarios more diverse.

[0011] In some embodiments of the present application, the rotary clamping self-locking mechanism further includes a fixed bracket, and the end of the driving rod exposed from the housing is fixedly connected to the fixed bracket. This arrangement makes the driving rod relatively fixed, and when the first clamping jaw needs to be opened or closed, the housing can be moved, which is convenient for one-handed operation.

[0012] In some embodiments of the present application, a universal clamp for fixing the housing is provided at one end of the driving rod exposed from the housing. Such a configuration facilitates the easy clamping and fixing of the housing, making it more convenient to switch the usage scene.

[0013] In some embodiments of the present application, a transmission slot for connecting to the output end of the motor is provided at one end of the driving rod exposed from the housing. Such a configuration enables the rotary clamping self-locking mechanism to be externally connected to a motor to realize the automation of the clamping operation, freeing both hands in the use scenario.

[0014] In some embodiments of the present application, the rotary clamping self-locking mechanism further includes a driving motor, and an output end of the driving motor is connected to an end of the driving rod exposed from the housing to drive the driving rod to rotate.

[0015] In some embodiments of the present application, a buffer pad is further provided on the facing ends of the first clamping jaw and the second clamping jaw. Such a configuration can prevent the first clamping jaw and the second clamping jaw from scratching the surface of the object when clamping the object, and the mutual compression between the buffer pad and the clamped object can also make the clamping more secure, thereby further improving the reliability of the clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a stereoscopic diagram from one viewing angle of the first embodiment of the present invention, showing the expansion connection hole provided on the driving rod.

[0017] Figure 2 This is a three-dimensional diagram from another perspective of the first embodiment of the present invention, showing the end surface of the housing away from the driving rod.

[0018] Figure 3 This is a three-dimensional diagram of the first clamping jaw when the housing is removed and the first clamping jaw is clamped and self-locked, showing the positional relationship between the first clamping jaw, the locking rod and the driving rod at this time.

[0019] Figure 4 This is a three-dimensional diagram of the first clamping jaw when the housing is removed and the first clamping jaw is released, showing the positional relationship among the first clamping jaw, the locking rod and the driving rod at this time.

[0020] Figure 5 This is a three-dimensional diagram of the first clamping jaw when the housing is removed and the first clamping jaw is fully opened and self-locked, showing the positional relationship between the first clamping jaw, the locking rod and the driving rod at this time.

[0021] Figure 6 This is an exploded view of the first embodiment of the present invention.

[0022] Figure 7 This is a stereoscopic view from a viewing angle of the second embodiment of the present invention, showing a universal chuck disposed on a driving rod.

[0023] Figure 8 This is a stereoscopic diagram from one viewing angle of the third embodiment of the present invention, showing a transmission groove provided on the driving rod for connecting to the output end of the motor.

[0024] Fig. 9 This is a three-dimensional diagram from a viewing angle of the fourth embodiment of the present invention, showing the operating protrusions provided on the facing ends of the first clamping jaw and the second clamping jaw.

[0025] Fig.10 A schematic diagram of a rotary clamping self-locking mechanism provided in a first embodiment of the present invention for fixing a housing by means of an extended connection hole on a driving rod.

[0026] Fig.11A schematic diagram of a rotary clamping self-locking mechanism provided by a second embodiment of the present invention for simply installing and fixing a housing by means of a universal clamp on a driving rod.

[0027] Fig.12 A schematic diagram of a rotary clamping self-locking mechanism provided in a third embodiment of the present invention in cooperation with a motor via a transmission groove on a driving rod.

[0028] Description of reference numerals:

[0029] 1-first clamping jaw, 11-locking groove, 111-curved inner wall, 122-matching section, 113-transition section, 2-second clamping jaw, 21-long groove, 22-adjusting screw, 3-housing, 30-cover plate, 31-countersunk hole, 32-hollow cavity, 4-locking rod, 41-first end of the locking rod, 42-second end of the locking rod, 43-cam structure, 5-driving rod, 50-end cover, 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 gasket, 7-operating protrusion, A-first pivot point, B-second pivot point, M-baseline, N-arc, T-first direction. DETAILED DESCRIPTION

[0030] The following will be combined Figures 1 to 12 The technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1

[0032] See also Figure 1 to Figure 2 as well as Figures 3 to 6In the present embodiment, the rotary clamping self-locking mechanism 100 comprises a first clamping jaw 1, a second clamping jaw 2, a housing 3, a locking rod 4 and a driving rod 5; the first clamping jaw 1 and the second clamping jaw 2 are respectively arranged at the two ends of the housing 3, and the first clamping jaw 1 is slidably arranged relative to the housing 3; a locking groove 11 is also provided on the first clamping jaw 1, the locking rod 4 is arranged in the locking groove 11, and the first end 41 of the locking rod 4 is rotatably arranged with the first clamping jaw 1 and forms a first pivot point A; the driving rod 5 is rotatably arranged on the housing 3, and the driving rod 5 is pivotally connected to the second end 42 of the locking rod 4 and forms a second pivot point B, thereby driving the locking rod 4 to move in the locking groove 11; it should be pointed out that the first pivot point A and the second pivot point B are both fictitious points for the convenience of clearly describing the movement process of the locking rod 4, and are enlarged in the accompanying drawings for easy viewing, rather than having two physical pivot points on the locking rod 4. Specifically, the driving rod 5 is pivotally connected to the second end 42 of the locking rod 4 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, and the locking rod 4 is sandwiched between the driving rod 5 and the cover plate 30, thereby limiting the movement of the locking rod 4 in a 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 in the locking groove 11. The housing 3 is provided with a countersunk hole 31, and the driving rod 5 is rotatably arranged in the countersunk hole 31. In order to further limit the position 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 exposed from the housing 3. In addition, the detachable setting of the end cap 50 also facilitates the rapid replacement of accessories on the end surface of the driving rod 5 exposed from the housing 3, thereby improving the interchangeability of accessories. Therefore, when the driving rod 5 rotates, the second pivot point B rotates along an arc N defined by the countersunk hole 31 passing through one side of the housing 3, so that the first end 41 of the locking rod 4 squeezes the inner wall of the locking groove 11, thereby pulling the first clamping jaw 1 to slide; a fictitious reference line M is created along the length direction of the housing 3 and passes through the first pivot point A. When clamping an object, when the second pivot point B is located on the right side of the reference line M, 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 object will be given to the first clamping jaw 1 and the second clamping jaw. The jaw 2 applies a reaction force so that the first jaw 1 and the second jaw 2 tend to move away from each other, thereby keeping the second end 42 of the locking rod 4 against the inner wall of the locking groove 11, and then both ends of the locking rod 4 are locked, so that the first jaw 1 is self-locking at this time; when the second pivot point B is located to the left side of the reference line M, the reaction force applied by the object to the first jaw 1 and the second jaw 2 can make the locking groove 11 of the first jaw 1 push the second end 42 of the locking rod 4, and drive the first end 41 of the locking rod 4 and the driving rod 5 to rotate, so that the first jaw 1 slides in the direction away from the second jaw 2, so that the first jaw 1 is in a released state at this time.

[0033] For further information, see Figures 3 to 5 The locking groove 11 has a curved inner wall 111, and both ends of the locking rod 4 have a cam structure 43 that cooperates with the curved inner wall 111. Specifically, the curved inner wall 111 includes two matching sections 112 that match the outer contour of the locking rod 4. The two matching sections 112 are respectively arranged on the left and right sides of the reference line M, and the upper ends of the two matching sections 112 overlap each other at the first pivot point A and limit the limited space for accommodating the first end 41 of the locking rod 4. A transition section 113 is also arranged between the two matching 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 to the limited space at the first pivot point A. The second end 42 of the locking rod 4 moves between the matching sections 112 on the left and right sides of the reference line M. When the first clamping jaw 1 and the second clamping jaw 2 are fully clamped, the cam structure 43 at the second end 42 of the locking rod 4 just fits in the matching section 112 on the right side of the reference line M. When the first clamping jaw 1 and the second clamping jaw 2 need to be driven to move away from each other to open, the driving rod 5 needs to rotate along the first direction T, and the second end 42 of the locking rod 4 gradually slides through the transition section 113 and moves toward the direction close to the matching section 112 located on the left side of the reference line M, so that the first end 41 of the locking rod 4 pushes the first clamping jaw 1 upward, so that the first clamping jaw 1 gradually slides upward to move away from the second clamping jaw 2, thereby gradually opening; when the first end 42 of the locking rod 4 moves to the matching section 112 located on the right side of the reference line M again, the first clamping jaw 1 is fully opened, and at this time, the driving rod 5 can no longer be driven to rotate along the first direction T, and the two ends of the locking rod 4 are completely accommodated in the two matching sections 112 for self-locking, and at this time, the first clamping jaw 1 is also self-locking. In addition, when the locking rod 4 is self-locking, the curved inner wall 111 and the cam structure 43 are in line contact with each other, and the wear is smaller, so the relative movement of the first clamping jaw 1 is more accurate and reliable. Therefore, the cooperation between the curved inner wall 111 and the cam structure 43 can greatly assist the reciprocating movement or self-locking of the first clamping jaw 1, making the pushing more efficient, thereby being suitable for promoting the application of the rotary clamping self-locking mechanism 100 in the field of precision control.

[0034] For further information, see Figure 6 The housing 3 further includes a hollow cavity 32, and the first clamping jaw 1 and the second clamping jaw 2 are both disposed in the hollow cavity 32 of the housing 3. Such a configuration can limit the relative movement between the first clamping jaw 1 and the second clamping jaw 2 in the housing 3, making the relative movement between the first clamping jaw 1 and the second clamping jaw 2 more stable.

[0035] For further information, see Figures 1 to 3, the second clamping jaw 2 is arranged on the housing 3 in an adjustable position. Specifically, in this embodiment, the second clamping jaw 2 is provided with an elongated slot 21, the extension direction of the elongated slot 21 is parallel to the length direction of the housing 3, and the second clamping jaw 2 is installed on the housing 3 by means of an adjusting screw 22, so that the position can be adjusted along the length direction of the housing 3 by the cooperation of the adjusting screw 22 and the elongated slot 21, so as to be suitable for clamping objects of various sizes. In order to ensure the adjustment effect, the number of the elongated slots 21 is two to ensure uniform force and structural stability. In addition, such a setting can also facilitate the adjustment of the position of the second clamping jaw 2 according to the size of the clamped object, further improving the stability of the clamping.

[0036] For further information, see Figure 1 and Fig.10 , an extended connection hole 51 for an external component is provided at one end of the driving rod 5 exposed from the housing 3. Such a setting facilitates the installation and fixing of the housing 3, making the use scenarios more diverse. In this embodiment, there are two extended connection holes 51, which are symmetrically arranged, and the housing 3 is installed and fixed for use by connecting the extended connection holes 51 to the fixing bracket 200. At this time, the driving rod 5 is relatively fixed, and the reciprocating sliding of the first clamping jaw 1 is achieved by toggling the housing 3, which is more convenient for one-handed operation.

[0037] For further information, see Figure 1 , a buffer pad 6 is also provided on the facing ends of the first clamping jaw 1 and the second clamping jaw 2. In this embodiment, the end surface of the buffer pad 6 facing the clamped object is a smoothly transitioned curved surface. Of course, the end surface of the buffer pad 6 facing the clamped object can also be a plane, but the smoothly transitioned curved surface has a better effect. Such a setting can prevent the first clamping jaw 1 and the second clamping jaw 2 from scratching the surface of the object when clamping the object. At the same time, the mutual compression between the buffer pad 6 and the clamped object will also make the clamping more firm, thereby further improving the reliability of the clamping.

[0038] Embodiment 2

[0039] See also Figure 7 and Fig.11 The difference between this embodiment and the first embodiment is that a universal clamp 52 for fixing the housing 3 is provided at one end of the driving rod 5 exposed from the housing 3. Specifically, the universal clamp 52 has two clamping sections 521, and each clamping end 521 is provided with a connecting hole 522, so as to facilitate the simple clamping and fixing of the housing 3. Such a setting facilitates the simple clamping and fixing of the housing 3, making it more convenient to switch the use scene. In this example, the cross bar 300 is clamped between the two clamping ends 521 for simple fixing and use.

[0040] Embodiment 3

[0041] See also Figure 8 and Fig.12, the difference between this embodiment and the first embodiment is that the end of the driving rod 5 exposed from the housing 3 is provided with a transmission groove 53 for connecting the output end of the motor. Specifically, the transmission groove 53 includes a cross transmission groove 531 and a rectangular transmission protrusion 532. Such a configuration can better position the output end of the motor so that the transmission is smooth and accurate. In this embodiment, the transmission groove 53 is externally connected to the driving motor 400, and the driving motor 400 is further provided with a support seat 500 for further fixing. The driving motor 400 can be selected as a servo motor that meets the use requirements. In addition, since the rotary clamping self-locking mechanism 100 has a self-locking function, the electric energy consumed by the servo motor can be saved.

[0042] Embodiment 4

[0043] See also Fig. 9 The difference between this embodiment and the first embodiment is that an operating protrusion 7 is further provided on the end surface of the second clamping jaw 2 facing the first clamping jaw 1. Such a configuration enables 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 the communication control scenario.

[0044] Compared with the prior art, the rotary clamping self-locking mechanism 100 provided by the present invention has the following beneficial effects: when clamping an object, the rotary clamping self-locking mechanism 100 can make the first clamping jaw 1 self-lock after clamping the object through the linkage between the driving rod 5, the locking rod 4 and the first clamping jaw 1, so that the clamping is more stable and reliable, thereby preventing the clamped object from accidentally falling off. In addition, the locking or releasing of the first clamping jaw 1 is achieved by the relative rotation between the driving rod 5 and the housing 3, which is convenient to operate, can ensure reliable clamping without setting a motor or spring, and has a more streamlined structure, which can save costs and make installation and disassembly more convenient.

[0045] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention.

Claims

1. A rotary clamping self-locking mechanism, characterized in that: The invention comprises a housing, 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 housing, and the first clamping jaw is arranged to be slidable relative to the housing; a locking groove is also arranged on the first clamping jaw, the locking rod is arranged in the locking groove, and the first end of the locking rod and the first clamping jaw are arranged to be relatively rotatable and form a first pivot point; the driving rod is rotatably arranged on the housing, and the driving rod is pivotally connected to the second end of the locking rod to form 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, so that the first end of the locking rod pulls the first clamping claw to slide; an imaginary reference line is created along the length direction of the shell and passes through the first pivot point. When the second pivot point is located on the right side of the reference line, both ends of the locking rod simultaneously abut against the locking groove and lock the first clamping claw; when the second pivot point is located on the left side of the reference line, the locking rod is unlocked and releases the first clamping claw.

2. The rotary clamping self-locking mechanism according to claim 1, characterized in that: The locking groove comprises a curved inner wall, and both ends of the locking rod are provided with cam structures which cooperate with the curved inner wall to assist the first clamping claw in self-locking or unlocking.

3. The rotary clamping self-locking mechanism according to claim 2, characterized in that: The curved inner wall includes two mating sections that match the outer contour of the locking rod. The two mating sections are respectively located on the left and right sides of the reference line, and the upper ends of the two mating sections overlap with each other at the first pivot point and limit a limited 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.

4. The rotary clamping self-locking mechanism according to claim 1, characterized in that: The second clamping jaw is provided with a long slot extending along the length direction of the shell, and the long slot of the second clamping jaw is connected to 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 clamping self-locking mechanism according to claim 1, characterized in that: An expansion connection hole for an external component is arranged at one end of the driving rod exposed from the shell.

6. The rotary clamping self-locking mechanism according to claim 1, characterized in that: The rotary clamping self-locking mechanism also includes a fixed bracket, and one end of the driving rod exposed from the shell is fixedly connected to the fixed bracket.

7. The rotary clamping self-locking mechanism according to claim 1, characterized in that: One end of the driving rod exposed from the housing is provided with a universal clamp for fixing the housing.

8. The rotary clamping self-locking mechanism according to claim 1, characterized in that: One end of the driving rod exposed from the shell is provided with a transmission groove for connecting to the output end of the motor.

9. The rotary clamping self-locking mechanism according to claim 1, characterized in that: The rotary clamping self-locking mechanism also includes a driving motor, the output end of which is connected to one end of the driving rod exposed from the housing to drive the driving rod to rotate.

10. The rotary clamping self-locking mechanism according to claim 1, characterized in that: Buffer pads are also provided on the facing ends of the first clamping jaw and the second clamping jaw.

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