Multifunctional quick clamp and method for combining two clamping functions of quick clamp

Abstract

The present invention relates to a multifunctional quick clamp and a method for combining two clamping functions of the quick clamp. The quick clamp is switched by arranging a first clamping arm and a second clamping arm on the same base and selectively fixing the first clamping arm or the second clamping arm on the base by using a locking pin. Thus, the quick clamp has the technical effect of multifunctional switching and expands the application range of a single quick clamp.

Description

Technical Field

[0001] The invention belongs to the technical field of fastening tools, and in particular relates to a multifunctional quick clamp and a method for combining two clamping functions of the quick clamp. Background Art

[0002] Manual clamps are a type of fastening tool that utilizes a connecting rod mechanism and the dead point principle for clamping. They are currently widely used in various workpiece clamping scenarios.

[0003] Manual clamps are mainly divided into horizontal clamps and vertical clamps. A Baidu search for "manual clamps" will retrieve a large number of manual clamps of different types and structures. These clamps all have a single clamping function. Currently, no single clamp has been found to have multiple clamping functions. Therefore, the current manual clamps have a single function and a narrow scope of application. Summary of the invention

[0004] The first technical problem to be solved by the present invention is to provide a multifunctional quick clamp to solve the technical problem that the current conventional quick clamps have a single function and a narrow application range.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a multifunctional quick clamp, including a base and a driving arm, the base is hinged with a first clamping arm through a first hinge shaft, the first clamping arm is provided with a first clamping head, the base is also plugged with a second clamping arm, the axial direction of the second clamping arm is perpendicular to the swing center axis of the first clamping arm, one end of the driving arm is hinged to the first clamping arm between the first hinge shaft and the first clamping head through the second hinge shaft, the driving arm and the second clamping arm are connected to each other through a connecting arm, one end of the connecting arm is hinged to the driving arm through a third hinge shaft, and the other end is hinged to the driving arm through a fourth hinge shaft. It is hinged with the middle part of the second clamping arm, and the first hinge axis, the second hinge axis, the third hinge axis and the fourth hinge axis are parallel to each other; it also includes a locking pin for locking the first clamping arm or the second clamping arm on the base; when the locking pin locks the first clamping arm on the base, the second clamping arm can slide relative to the base along its axial direction to form a connecting rod slider mechanism, and the second clamping arm clamps the workpiece in its axial direction; when the locking pin locks the second clamping arm on the base, the first clamping arm can swing around the first hinge axis relative to the base to form a four-bar linkage mechanism, and the first clamping arm clamps the workpiece on its swinging path.

[0006] As a preferred solution, a first positioning hole parallel to the first hinge axis is provided on the base, and a first locking hole corresponding to the first positioning hole is provided on the first clamping arm. When the first clamping arm needs to be locked on the base, the first clamping arm is swung so that the first locking hole is opposite to the first positioning hole, and then the locking pin is inserted into the first locking hole and the first positioning hole.

[0007] As a preferred solution, the base is provided with an assembly hole for inserting the second clamping arm, the second clamping arm is slidably inserted in the assembly hole, the base is provided with a second positioning hole vertically connected to the assembly hole, and the second clamping arm is provided with a second locking hole corresponding to the second positioning hole. When the second clamping arm needs to be locked on the base, the second clamping arm is slid so that the second locking hole is opposite to the second positioning hole, and then the locking pin is inserted into the second locking hole and the second positioning hole.

[0008] As a preferred solution, the base is provided with an assembly hole that cooperates with the second clamping arm, and the second clamping arm is slidably inserted in the assembly hole. The base is provided with a second positioning hole that is vertically connected to the assembly hole, and the second positioning hole is a threaded hole. The front end of the locking pin has a screw section that cooperates with the second positioning hole. When the second clamping arm needs to be locked on the base, the screw section of the locking pin is screwed into the second positioning hole until the locking pin is tightly against the second clamping arm.

[0009] As a preferred solution, a sliding sleeve is inserted into the assembly hole, the second clamping arm is slidably inserted into the sliding sleeve, the sliding sleeve is fixedly connected to the base, a through hole is opened on the sliding sleeve and is opposite to the second positioning hole, and the locking pin can pass through the through hole.

[0010] As a preferred solution, one end of the sleeve away from the clamping direction of the second clamping arm extends out of the base and expands radially to form a limit ring, which abuts against the outer wall of the base to limit the sliding sleeve from sliding in the clamping direction of the second clamping arm.

[0011] As a preferred solution, the first clamping head is connected to the first clamping arm via a connecting rod.

[0012] The technical problem to be further solved by the present invention is to provide a method for combining the two clamping functions of a quick clamp so that the same quick clamp has two clamping functions, thereby solving the technical problem that conventional quick clamps currently have a single function and a narrow range of use.

[0013] In order to solve the above technical problems, the technical solution adopted by the present invention is: a method for combining the two clamping functions of a quick clamp, including connecting the clamping arms of the two clamping functions to the same base respectively, and providing a locking structure that can lock the two clamping arms to the base respectively, the two clamping arms share a set of driving arms and connecting arms, the driving arms and the connecting arms are hinged to each other, the other end of the driving arm is hinged to one of the two clamping arms, and the other end of the connecting arm is hinged to the other of the two clamping arms.

[0014] As a preferred solution, the locking structure includes a locking pin, a locking hole opened on any clamping arm and a positioning hole opened on the base. The locking hole on the clamping arm is opposite to at least one positioning hole on the base during the swinging process of the clamping arm. The locking pin is inserted into the locking hole and the positioning hole opposite to each other to lock one clamping arm on the base.

[0015] The beneficial effect of the present invention is that the present invention arranges the first clamping arm and the second clamping arm on the same base, and selectively fixes the first clamping arm or the second clamping arm on the base by using a locking pin to switch the clamping function of the quick clamp, thereby making the quick clamp have the technical effect of multi-functional switching and expanding the application scope of a single quick clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the multifunctional quick-action toggle clamp described in Example 1 of the present invention;

[0018] Figure 2 yes Figure 1 An exploded view of the multifunctional quick clamp shown;

[0019] Figure 3 yes Figure 1 Schematic diagram of the internal structure of the base shown in;

[0020] Figure 4 It is another locking structure between the second clamping arm and the base;

[0021] Figure 5 It is another locking structure of the clamping arm hinged to the base;

[0022] Figure 1~Figure 5 In: 1. base; 2. driving arm; 3. first hinge shaft; 4. first clamping arm; 5. first chuck; 6. second clamping arm; 7. second hinge shaft; 8. connecting arm; 9. third hinge shaft; 10. fourth hinge shaft; 11. locking pin; 12. first positioning hole; 13. first locking hole; 14. assembly hole; 15. second positioning hole; 16. second locking hole; 17. screw section; 18. sliding sleeve; 19. through hole; 20. limiting ring; 21. connecting rod; 22. second chuck; 23. hinge shaft; 24. cylindrical section; 25. rotating sleeve; 26. hinge hole; 27. locking hole. DETAILED DESCRIPTION

[0023] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Example 1

[0024] like Figure 1~Figure 3The multifunctional quick clamp shown comprises a base 1 and a driving arm 2, wherein a first clamping arm 4 is hingedly connected to the base 1 through a first hinge shaft 3, a first chuck 5 is arranged on the first clamping arm 4, and the first chuck 5 is connected to the first clamping arm 4 through a connecting rod 21. A second clamping arm 6 is also inserted into the base 1, and the axial direction of the second clamping arm 6 is perpendicular to the swing center axis of the first clamping arm 4, i.e., the first hinge shaft 3. One end of the driving arm 2 is hingedly connected to the first clamping arm 4 between the first hinge shaft 3 and the first chuck 5 through a second hinge shaft 7. The driving arm 2 and the second clamping arm 6 are connected to each other through a connecting arm 8, one end of the connecting arm 8 is hingedly connected to the driving arm 2 through a third hinge shaft 9, and the other end is hingedly connected to the middle part of the second clamping arm 6 through a fourth hinge shaft 10. The first hinge shaft 3, the second hinge shaft 7, the third hinge shaft 9 and the fourth hinge shaft 10 are all parallel to each other. The clamping end of the second clamping arm 6 is preferably connected to the second chuck 22.

[0025] The multifunctional quick-action toggle clamp described in this embodiment further comprises a locking pin 11 for locking the first clamping arm 4 or the second clamping arm 6 on the base 1 .

[0026] When the locking pin 11 locks the first clamping arm 4 on the base 1, the second clamping arm 6 can slide relative to the base 1 along its axial direction to form a connecting rod slider mechanism, and the second clamping arm 6 clamps the workpiece in its axial direction. The swing driving arm 2 swings the third hinge shaft 9 to the dead point position, and the second clamping arm 6 clamps the workpiece and maintains the clamping state.

[0027] When the locking pin 11 locks the second clamping arm 6 on the base 1, the first clamping arm 4 can swing around the first hinge shaft 3 relative to the base 1 to form a four-bar linkage, and the first clamping arm 4 clamps the workpiece on its swinging path. The swing driving arm 2 swings the third hinge shaft 9 to the dead point position, and the first clamping arm 4 clamps the workpiece and maintains the clamping state.

[0028] In this embodiment, the specific structure of the locking pin 11 and the first clamping arm 4 locked on the base 1 is: a first positioning hole 12 parallel to the first hinge shaft 3 is opened on the base 1, and a first locking hole 13 corresponding to the first positioning hole 12 is opened on the first clamping arm 4. When the first clamping arm 4 needs to be locked on the base 1, the first clamping arm 4 is swung so that the first locking hole 13 is opposite to the first positioning hole 12, and then the locking pin 11 is inserted into the first locking hole 13 and the first positioning hole 12.

[0029] In this embodiment, the specific structure of the locking pin 11 locking the second clamping arm 6 on the base 1 is: the base 1 is provided with an assembly hole 14 for inserting the second clamping arm 6, the second clamping arm 6 is slidably inserted in the assembly hole 14, the base 1 is provided with a second positioning hole 15 vertically connected to the assembly hole 14, and the second clamping arm 6 is provided with a second locking hole 16 corresponding to the second positioning hole 15. When the second clamping arm 6 needs to be locked on the base 1, slide the second clamping arm 6 so that the second locking hole 16 is opposite to the second positioning hole 15, and then insert the locking pin 11 into the second locking hole 16 and the second positioning hole 15.

[0030] In this embodiment, preferably, a sleeve 18 is inserted into the assembly hole 14, the second clamping arm 6 is slidably inserted into the sleeve 18, the sleeve 18 is fixedly connected to the base 1 by bolts, and a through hole 19 is provided on the sleeve 18, which is directly opposite to the second positioning hole 15, and the locking pin 11 can pass through the through hole 19. The sleeve 18 is preferably made of high-strength material, such as metal material. The metal sleeve 18 has better wear resistance and can provide a higher positioning effect. The locking pin 11 passes through the through hole 19 and is connected to the sleeve 18, which can effectively prevent the second positioning hole on the base 1 from being damaged by the radial force of the locking pin 11.

[0031] In this embodiment, one end of the sliding sleeve 18 away from the clamping direction of the second clamping arm 6 is further extended out of the base 1 and radially expanded to form a limit ring 20, which abuts against the outer wall of the base 1 to limit the sliding sleeve 18 from sliding in the clamping direction of the second clamping arm 6, thereby improving the connection stability between the sliding sleeve 18 and the base 1.

[0032] The working process of the present invention is: Figure 1 As shown, first, the base 1 is fixedly connected to the workbench. When the horizontal clamping function is needed, the user can insert the locking pin 11 into the first locking hole 13 and the first positioning hole 12 to lock the first clamping arm 4 on the base 1. At this time, the second clamping arm 6 can slide in the sliding sleeve 18 along its axial direction, and press the end of the driving arm 2 away from the second hinge shaft 7 to move the third hinge shaft 9 between the second hinge shaft 7 and the fourth hinge shaft 10 until the third hinge shaft 9 moves between the second hinge shaft 7 and the fourth hinge shaft 10 and the second hinge shaft 7, the third hinge shaft 9 and the fourth hinge shaft 10 are arranged in the same straight line direction, that is, the third hinge shaft 9 moves to the dead point position. At this time, the second clamping arm 6 is moved to Figure 1 The right side direction shown is moved to clamp the workpiece, and the force applied to the driving arm 2 is released, and the second clamping arm 6 can still maintain the clamping state of the workpiece.

[0033] When the user needs to use the vertical clamping function, the user can pull out the locking pin 11 from the first locking hole 13 and the first positioning hole 12 to unlock the first clamping arm 4, and then insert the locking pin 11 into the second locking hole 16 and the second positioning hole 15 to lock the second clamping arm 6 on the base 1. At this time, the first clamping arm 4 can swing around the first hinge shaft 3, pressing the end of the driving arm 2 away from the second hinge shaft 7 to move the third hinge shaft 9 between the second hinge shaft 7 and the fourth hinge shaft 10 until the third hinge shaft 9 moves between the second hinge shaft 7 and the fourth hinge shaft 10 and the second hinge shaft 7, the third hinge shaft 9 and the fourth hinge shaft 10 are arranged in the same straight line direction, that is, the third hinge shaft 9 moves to the dead point position. At this time, the end of the first clamping arm 4 connected to the first clamp 5 moves to Figure 1 As shown, the first clamping head 5 swings downward to clamp the workpiece, and the force applied to the driving arm 2 is released, and the first clamping arm 4 can still maintain the clamping state of the workpiece.

[0034] It can be seen that the multifunctional quick-action toggle clamp described in this embodiment can switch the clamping function according to user needs, thereby expanding the application scope of a single quick-action toggle clamp. Example 2

[0035] This embodiment provides another locking structure between the second clamping arm 6 and the base 1 based on the embodiment 1.

[0036] like Figure 4 As shown, the base 1 is provided with an assembly hole 14 that cooperates with the second clamping arm 6, and the second clamping arm 6 is slidably inserted in the assembly hole 14. The base 1 is provided with a second positioning hole 15 that is vertically connected to the assembly hole 14. The second positioning hole 15 is a threaded hole, and the front end of the locking pin 11 has a screw segment 17 that cooperates with the second positioning hole 15. When the second clamping arm 6 needs to be locked on the base 1, the screw segment 17 of the locking pin 11 is screwed into the second positioning hole 15 until the locking pin 11 is tightly against the second clamping arm 6. Example 3

[0037] This embodiment borrows Figure 1~Figure 3 A method for combining two clamping functions of a quick-action clamp is described in detail.

[0038] refer to Figure 1~Figure 3 The method of combining two clamping functions of a quick clamp includes connecting clamping arms with two clamping functions, such as a first clamping arm 4 and a second clamping arm 6, to the same base 1, respectively, and providing a locking structure that can lock the first clamping arm 4 and the second clamping arm 6 to the base 1, respectively. The first clamping arm 4 and the second clamping arm 6 share a set of driving arms 2 and connecting arms 8, and the driving arm 2 and the connecting arm 8 are hinged to each other. The other end of the driving arm 2 is hinged to one of the two clamping arms, namely, the first clamping arm 4 or the second clamping arm 6, and the other end of the connecting arm 8 is hinged to the other of the two clamping arms, namely, the second clamping arm 6 or the first clamping arm 4.

[0039] There are many types of locking structures. The clamping arm hinged to the base 1 can be locked with a locking pin 11, such as Figure 1~Figure 3 As shown, the function of locking the clamping arm can also be obtained by improving the hinge shaft of the clamping arm, such as Figure 5 As shown, a prismatic hinge shaft 23 is used, and two concave cylindrical sections 24 are processed on the hinge shaft 23. A rotating sleeve 25 with the same shape as the hinge shaft 23 is rotatably connected to the cylindrical section 24. A locking hole 27 adapted to the hinge shaft 23 is provided on the base 1. The hinge shaft 23 passes through the hinge hole 26 on the clamping arm and is inserted into the locking hole 27. The hinge shaft 23 cannot rotate in the locking hole 27. When the rotating sleeve 25 is just inserted into the hinge hole 26 of the clamping arm, the clamping arm can rotate, and when the rotating sleeve 25 is misaligned with the hinge hole 26, the clamping arm is locked. This locking structure enables the clamping arm to adjust multiple locking angles, but the locking strength is not as good as the locking structure described in Example 1.

[0040] The clamping arm used to lock the sliding connection with the base 1 can be locked by the locking pin 11, and the locking method does not shift, such as the two locking methods respectively exemplified in Example 1 and Example 2.

[0041] By adopting the above method, two clamping functions can be switched on one base 1 using only one set of driving arm 2 and connecting arm 8. The two clamping functions include a combination of two vertical clamping functions or a combination of two horizontal clamping functions or a combination of one vertical clamping function and one horizontal clamping function.

[0042] It should be noted that the method described in the present invention integrates two clamping functions on the same base 1 and the two clamping functions can be switched between each other, which is completely different from the conventional structure of connecting two clamps on a clamping arm and the two clamps act simultaneously.

[0043] The above embodiments are only illustrative of the principles and effects of the invention, as well as some embodiments of its application, and are not intended to limit the invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the invention, and all of these belong to the protection scope of the invention.

Claims

1. A multifunctional quick clamp, comprising a base (1) and a drive arm (2), characterized in that: A first clamping arm (4) is hingedly connected to the base (1) via a first hinge shaft (3), a first clamping head (5) is arranged on the first clamping arm (4), a second clamping arm (6) is also plugged into the base (1), the axial direction of the second clamping arm (6) is perpendicular to the swing center axis of the first clamping arm (4), one end of the driving arm (2) is hingedly connected to the first clamping arm (4) between the first hinge shaft (3) and the first clamping head (5) via a second hinge shaft (7), the driving arm (2) and the second clamping arm (6) are connected to each other via a connecting arm (8), one end of the connecting arm (8) is hingedly connected to the driving arm (2) via a third hinge shaft (9), and the other end is hingedly connected to the middle part of the second clamping arm (6) via a fourth hinge shaft (10), and the first hinge shaft (3), the second hinge shaft (7), the third hinge shaft (9) and the fourth hinge shaft (10) are all parallel to each other; It also includes a locking pin (11) for locking the first clamping arm (4) or the second clamping arm (6) on the base (1); When the locking pin (11) locks the first clamping arm (4) on the base (1), the second clamping arm (6) can slide along its axial direction relative to the base (1) to form a connecting rod slider mechanism, and the second clamping arm (6) clamps the workpiece in its axial direction; When the locking pin (11) locks the second clamping arm (6) on the base (1), the first clamping arm (4) can swing relative to the base (1) around the first hinge shaft (3) to form a four-bar linkage, and the first clamping arm (4) clamps the workpiece on its swinging path.

2. The multifunctional quick-action toggle clamp according to claim 1, characterized in that: The base (1) is provided with a first positioning hole (12) parallel to the first hinge shaft (3), and the first clamping arm (4) is provided with a first locking hole (13) corresponding to the first positioning hole (12). When it is necessary to lock the first clamping arm (4) on the base (1), the first clamping arm (4) is swung so that the first locking hole (13) is aligned with the first positioning hole (12), and then the locking pin (11) is inserted into the first locking hole (13) and the first positioning hole (12).

3. The multifunctional quick-action toggle clamp according to claim 1, characterized in that: The base (1) is provided with an assembly hole (14) for inserting the second clamping arm (6), the second clamping arm (6) is slidably inserted in the assembly hole (14), the base (1) is provided with a second positioning hole (15) vertically connected to the assembly hole (14), the second clamping arm (6) is provided with a second locking hole (16) corresponding to the second positioning hole (15), when it is necessary to lock the second clamping arm (6) on the base (1), the second clamping arm (6) is slid so that the second locking hole (16) is aligned with the second positioning hole (15), and then the locking pin (11) is inserted into the second locking hole (16) and the second positioning hole (15).

4. The multifunctional quick-action toggle clamp according to claim 1, characterized in that: The base (1) is provided with an assembly hole (14) which cooperates with the second clamping arm (6); the second clamping arm (6) is slidably inserted in the assembly hole (14); the base (1) is provided with a second positioning hole (15) which is vertically connected to the assembly hole (14); the second positioning hole (15) is a threaded hole; the front end of the locking pin (11) has a screw section (17) which cooperates with the second positioning hole (15); when it is necessary to lock the second clamping arm (6) on the base (1), the screw section (17) of the locking pin (11) is screwed into the second positioning hole (15) until the locking pin (11) and the second clamping arm (6) are tightly abutted.

5. The multifunctional quick-action toggle clamp according to claim 3, characterized in that: A sliding sleeve (18) is inserted into the assembly hole (14), the second clamping arm (6) is slidably inserted into the sliding sleeve (18), the sliding sleeve (18) is fixedly connected to the base (1), and a through hole (19) is formed on the sliding sleeve (18) and is directly opposite to the second positioning hole (15), and the locking pin (11) can pass through the through hole (19).

6. The multifunctional quick-action toggle clamp according to claim 5, characterized in that: One end of the sliding sleeve (18) away from the clamping direction of the second clamping arm (6) extends out of the base (1) and expands radially to form a limiting ring (20); the limiting ring (20) abuts against the outer wall of the base (1) to limit the sliding sleeve (18) from sliding in the clamping direction of the second clamping arm (6).

7. The multifunctional quick-action toggle clamp according to claim 1, characterized in that: The first clamping head (5) is connected to the first clamping arm (4) via a connecting rod (21).

8. A method for combining two clamping functions of a quick clamp, characterized in that: The invention comprises connecting two clamping arms with two clamping functions to the same base respectively, and arranging a locking structure which can lock the two clamping arms to the base respectively; the two clamping arms share a set of driving arms and connecting arms, the driving arms and connecting arms are hinged to each other, the other end of the driving arm is hinged to one of the two clamping arms, and the other end of the connecting arm is hinged to the other of the two clamping arms.

9. The method according to claim 8, characterized in that The locking structure includes a locking pin, a locking hole on a clamping arm hinged to the base or locking holes respectively provided on the two clamping arms, and a positioning hole provided on the base. The locking hole on the clamping arm is opposite to at least one positioning hole on the base during the swinging process of the clamping arm. The locking pin is inserted into the locking hole and the positioning hole facing each other to lock one clamping arm on the base.

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