Tweezers capable of preventing overexertion of clamping

Abstract

The utility model discloses a pair of tweezers capable of preventing overexertion of clamping, which relates to the technical field of tweezers and comprises tweezers arms, a fixing rod is fixedly mounted on the tweezers arms, a U-shaped sliding rail is fixedly mounted on the fixing rod, a sliding component is mounted on the U-shaped sliding rail and comprises a fixing shaft, a connecting rod and a sliding shaft, and the connecting rod is fixedly mounted on the fixing shaft. Two fixed shafts are fixedly installed on the tweezers arms, a sliding shaft is installed on the U-shaped sliding rail in a sliding mode, connecting rods are rotatably installed between the sliding shaft and the fixed shafts, a limiting assembly is installed on the U-shaped sliding rail, a rotating assembly is installed on the tweezers arms, and a transmission assembly is installed on the tweezers arms. The upper ends of the tweezers arms are rotationally provided with tweezers heads through two sets of rotating assemblies respectively. The tweezers have the advantages that the clamping range of the tweezers arms can be effectively controlled, the situation that clamped objects are broken due to overexertion is avoided, the practicability of the tweezers is improved, and the tweezers heads can be rotated so that the objects can be better clamped.

Description

Technical Field

[0001] The utility model relates to the technical field of tweezers, in particular to a pair of tweezers capable of preventing excessive clamping force. Background Art

[0002] Tweezers are the most common gripping tools in daily life and are used in a wide range of areas: household, medical, scientific research experiments, etc. When tweezers are used to grip fragile or small items, excessive force may cause the items to break. In order to improve the practicality of tweezers, tweezers that prevent excessive force are usually used to grip items.

[0003] Existing tweezers for preventing excessive clamping force have the problem of being unable to control the clamping angle of the tweezers, which may cause fragile objects to break due to the inability to accurately control the force, and the tweezers head cannot be rotated, which limits the clamping range of the tweezers.

[0004] Therefore, it is urgent to design a pair of tweezers that can prevent excessive clamping force to solve the above problems.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0006] The utility model aims to solve the problem in the prior art that the clamping angle of the tweezers cannot be controlled and the tweezer heads cannot be rotated, and a pair of tweezers is proposed to prevent excessive clamping force.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A pair of tweezers for preventing excessive clamping force, comprising a tweezer arm, a fixed rod fixedly mounted on the tweezer arm, a U-shaped slide rail fixedly mounted on the fixed rod, a sliding assembly mounted on the U-shaped slide rail, the sliding assembly comprising a fixed shaft, a connecting rod and a sliding shaft, two fixed shafts fixedly mounted on the tweezer arm, a sliding shaft slidably mounted on the U-shaped slide rail, a connecting rod rotatably mounted between the sliding shaft and the fixed shaft, a limiting assembly mounted on the U-shaped slide rail, a rotating assembly mounted on the tweezer arm, a transmission assembly mounted on the tweezer arm, and tweezer heads rotatably mounted on the upper ends of the tweezer arms through two groups of rotating assemblies.

[0009] In the above-mentioned tweezers for preventing excessive clamping force, the connecting rod is composed of a connecting rod and two circular rings, one circular ring is rotatably mounted on the fixed shaft, and another circular ring is rotatably mounted on the sliding shaft. A connecting rod is fixedly mounted between the two circular rings, and the diameters of the two circular rings correspond to the diameters of the fixed shaft and the sliding shaft respectively.

[0010] In the above-mentioned tweezers for preventing excessive clamping force, the limiting assembly includes a primary threaded rod and a secondary threaded rod, the primary threaded rod and the secondary threaded rod are threadedly installed on the U-shaped slide rail, and the secondary threaded rod is located below the primary threaded rod.

[0011] In the above-mentioned tweezers for preventing excessive clamping force, the rotating assembly includes a driving gear, a fixed block, a rotating shaft and a rotating handle. The tweezer arm is rotatably mounted with a rotating shaft through the fixed block, one end of the rotating shaft is fixedly mounted with a driving gear, and the other end of the rotating shaft is fixedly mounted with a rotating handle.

[0012] In the above-mentioned tweezers for preventing excessive clamping force, the transmission assembly includes a slot body, a gear ring and a transmission shaft. Two slot bodies are provided on the tweezer arm, and a transmission shaft matching the slot bodies is rotatably installed between the two slot bodies. Gear rings are fixedly installed at both ends of the transmission shaft, and the gear ring close to the rotating shaft is meshed with the driving gear.

[0013] In the above-mentioned tweezers for preventing excessive clamping force, the rotating assembly includes a transmission gear, a roller, an internal gear ring and a gear, a circular groove is provided on the tweezer head, a roller is rotatably installed between the tweezer arm and the circular groove, a transmission gear meshing with the gear ring is fixedly installed on the roller, an internal gear ring is fixedly installed in the circular groove, and a gear meshing with the internal gear ring is fixedly installed on the roller located in the circular groove.

[0014] Compared with the existing technology, the utility model has the following advantages:

[0015] 1: By using the limit assembly in conjunction with the U-shaped slide rail, the sliding shaft can be limited, thereby controlling the clamping range of the tweezers arm, avoiding the breakage of the clamped objects due to excessive force, and improving the practicality of the tweezers.

[0016] 2: By using the rotating assembly in conjunction with the transmission assembly, the two tweezers heads can rotate synchronously, ensuring that the rotation angles of the tweezers heads are consistent, avoiding affecting the clamping effect of the tweezers, and making the tweezers more convenient to use.

[0017] 3: By setting a rotating component, the tweezers head can be rotated to a certain angle during use, so as to better clamp objects, and the tweezers head can be rotated to any angle, expanding the use range of the tweezers.

[0018] In summary, the utility model can effectively control the clamping range of the tweezers arms, avoid the breakage of clamped objects due to excessive force, improve the practicality of the tweezers, and can rotate the tweezers heads to better clamp objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a schematic diagram of the structure of a pair of tweezers for preventing excessive clamping force proposed by the utility model;

[0020] Figure 2 for Figure 1 The structural diagram of the middle U-shaped slide rail part;

[0021] Figure 3 for Figure 1 A schematic diagram of the structure of the middle forceps head;

[0022] Figure 4 for Figure 3 Schematic diagram of the structure of the transmission gear part.

[0023] In the figure: 1 tweezer arm, 2 fixed rod, 3 anti-skid pad, 4 tweezer head, 5 fixed shaft, 6 U-type slide rail, 7 connecting rod, 8 sliding shaft, 9 trough body, 10 primary threaded rod, 11 secondary threaded rod, 12 clamping pad, 13 gear ring, 14 transmission shaft, 15 driving gear, 16 fixed block, 17 rotating shaft, 18 rotating handle, 19 transmission gear, 20 roller, 21 internal gear ring, 22 gear. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Reference Figure 1-Figure 2 A pair of tweezers for preventing excessive clamping force comprises a tweezer arm 1, a fixing rod 2 is fixedly mounted on the tweezer arm 1, a U-shaped slide rail 6 is fixedly mounted on the fixing rod 2, a sliding assembly is mounted on the U-shaped slide rail 6, and a limit assembly is mounted on the U-shaped slide rail 6;

[0026] The sliding assembly includes a fixed shaft 5, a connecting rod 7 and a sliding shaft 8. Two fixed shafts 5 are fixedly installed on the forceps arm 1. The sliding shaft 8 is slidably installed on the U-shaped slide rail 6. The connecting rod 7 is rotatably installed between the sliding shaft 8 and the fixed shaft 5.

[0027] The sliding assembly cooperates with the U-shaped slide rail 6 to enable the forceps arm 1 to clamp within a certain range, thereby preventing the clamped object from being broken due to excessive force by the operator;

[0028] The connecting rod 7 is composed of a connecting rod and two rings. One ring is rotatably mounted on the fixed shaft 5, and another ring is rotatably mounted on the sliding shaft 8. A connecting rod is fixedly mounted between the two rings, and the diameters of the two rings correspond to the diameters of the fixed shaft 5 and the sliding shaft 8, respectively.

[0029] Connecting rods 7 are installed at both ends of the sliding shaft 8, and the connecting rods 7 are rotatably installed between the sliding shaft 8 and the fixed shaft 5 located in the same plane;

[0030] The inner wall of the ring can be installed with rubber, which can protect the fixed shaft 5 and the sliding shaft 8 by using its wear-resistant and pressure-resistant properties, reduce wear and tear, and extend the service life of the tweezers.

[0031] The limiting assembly includes a primary threaded rod 10 and a secondary threaded rod 11. The primary threaded rod 10 and the secondary threaded rod 11 are threadedly mounted on the U-shaped slide rail 6, and the secondary threaded rod 11 is located below the primary threaded rod 10.

[0032] The limiting component can limit the sliding shaft 8, thereby controlling the clamping range of the tweezers arm 1, avoiding the breakage of the clamped objects due to excessive force, and improving the practicality of the tweezers.

[0033] The primary threaded rod 10 and the secondary threaded rod 11 can limit the clamping range of the forceps arm 1 to avoid the crushing of the clamped objects due to excessive force;

[0034] Reference Figure 3 , a rotating assembly is installed on the tweezer arm 1, and a transmission assembly is installed on the tweezer arm 1;

[0035] The rotating assembly includes a driving gear 15, a fixed block 16, a rotating shaft 17 and a rotating handle 18. The rotating shaft 17 is rotatably mounted on the forceps arm 1 through the fixed block 16. The driving gear 15 is fixedly mounted on one end of the rotating shaft 17, and the rotating handle 18 is fixedly mounted on the other end of the rotating shaft 17.

[0036] The rotating assembly can adjust the rotation angle of the tweezer head 4 as required by manually rotating the rotating handle 18, so as to clamp the object, thereby improving the practicality of the tweezers;

[0037] The transmission assembly includes a slot body 9, a gear ring 13 and a transmission shaft 14. Two slot bodies 9 are provided on the forceps arm 1. A transmission shaft 14 matching with the slot body 9 is rotatably installed between the two slot bodies 9. Gear rings 13 are fixedly installed at both ends of the transmission shaft 14, and the gear ring 13 close to the rotating shaft 17 is meshed with the driving gear 15.

[0038] The transmission assembly enables the two tweezer heads 4 to rotate synchronously, ensuring that the rotation angles of the tweezer heads 4 are consistent, thereby avoiding affecting the clamping effect of the tweezers;

[0039] The transmission shaft 14 is mounted between the two slots 9 of the forceps arm 1. The transmission shaft 14 and the gear ring 13 can be removed after adjusting the angle of the forceps head 4 to prevent the transmission shaft 14 from always supporting the forceps arm 1 and causing the forceps arm 1 to be unable to clamp normally.

[0040] Reference Figure 4The upper end of the tweezer arm 1 is rotatably mounted with a tweezer head 4 through two sets of rotating components, and the two tweezer heads 4 are fixedly mounted with a clamping pad 12, and the tweezer arm 1 is fixedly mounted with two anti-slip pads 3;

[0041] The rotating assembly includes a transmission gear 19, a roller 20, an inner gear ring 21 and a gear 22. A circular groove is provided on the tweezer head 4. A roller 20 is rotatably installed between the tweezer arm 1 and the circular groove. The transmission gear 19 meshing with the gear ring 13 is fixedly installed on the roller 20. An inner gear ring 21 is fixedly installed in the circular groove. A gear 22 meshing with the inner gear ring 21 is fixedly installed on the roller 20 located in the circular groove.

[0042] The rotating assembly can control the tweezers head 4 to rotate, making the tweezers more convenient to use and improving the practicality of the tweezers;

[0043] When the tweezer head 4 needs to be rotated, the rotating handle 18 is manually rotated to drive the driving gear 15 to rotate through the rotating shaft 17. Since the driving gear 15 is meshed with one of the gear rings 13, the transmission shaft 14 is driven to rotate. The rotation of the transmission shaft 14 drives the other gear ring 13 to rotate. The gear ring 13 is meshed with the transmission gear 19, thereby driving the roller 20 to rotate through the transmission gear 19. The rotation of the roller 20 drives the inner gear ring 21 to rotate through the gear 22, thereby driving the tweezer head 4 to rotate, thereby realizing the rotation of the tweezer head 4;

[0044] The two tweezer heads 4 are both fixedly mounted with a clamping pad 12, and the tweezer arm 1 is fixedly mounted with two anti-slip pads 3;

[0045] The anti-skid pad 3 can be made of rubber material. Rubber has anti-skid and wear-resistant properties, which can enhance the friction between the fingers and the tweezers, making the clamping effect better and prolonging the service life of the tweezers.

[0046] The clamping pad 12 may also be made of rubber material to prevent fragile objects from being broken due to the tweezers head 4 being too hard, thereby achieving a better clamping effect.

[0047] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.

[0048] In the present invention, the initial state is: the primary threaded rod 10 and the secondary threaded rod 11 are both against the U-shaped slide rail 6;

[0049] When in use, first rotate the primary threaded rod 10 or the secondary threaded rod 11 according to the size of the clamped object. If the clamped object is small, there is no need to rotate the primary threaded rod 10 or the secondary threaded rod 11. If the clamped object is medium, the primary threaded rod 10 can be rotated to disengage it from the U-shaped slide rail 6. If the clamped object is large, the primary threaded rod 10 and the secondary threaded rod 11 can be rotated to disengage them from the U-shaped slide rail, so that the sliding shaft 8 can slide in the entire U-shaped slide rail 6.

[0050] After adjusting the clamping range of the tweezer arm 1, if the tweezer head 4 needs to be rotated, manually rotate the rotating handle 18 to drive the driving gear 15 to rotate through the rotating shaft 17, and then drive the tweezer head 4 to rotate through the internal gear ring 21 through the cooperation of the transmission assembly and the rotating assembly to realize the rotation of the tweezer head 4. After adjusting to a suitable angle, disassemble the transmission assembly to prevent the transmission shaft 14 from affecting the clamping of the tweezer arm;

[0051] When clamping, hold the anti-slip pad 3 on the tweezer arm 1 and clamp the tweezer arm 1 tightly, applying pressure to the tweezer arm 1, so that the connecting rod 7 drives the sliding shaft 8 to slide in the U-shaped slide rail 6, thereby controlling the tweezer head 4 to clamp the object.

[0052] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pair of tweezers for preventing excessive clamping force, comprising a tweezer arm (1), characterized in that: The tweezer arm (1) is fixedly mounted with a fixed rod (2), the fixed rod (2) is fixedly mounted with a U-shaped slide rail (6), the U-shaped slide rail (6) is mounted with a sliding assembly, the sliding assembly comprises a fixed shaft (5), a connecting rod (7) and a sliding shaft (8), two fixed shafts (5) are fixedly mounted on the tweezer arm (1), a sliding shaft (8) is slidably mounted on the U-shaped slide rail (6), a connecting rod (7) is rotatably mounted between the sliding shaft (8) and the fixed shaft (5), a limiting assembly is mounted on the U-shaped slide rail (6), a rotating assembly is mounted on the tweezer arm (1), a transmission assembly is mounted on the tweezer arm (1), and a tweezer head (4) is rotatably mounted on the upper end of the tweezer arm (1) through two groups of rotating assemblies.

2. A pair of tweezers for preventing excessive clamping force according to claim 1, characterized in that: The connecting rod (7) is composed of a connecting rod and two circular rings. One circular ring is rotatably mounted on the fixed shaft (5), and another circular ring is rotatably mounted on the sliding shaft (8). A connecting rod is fixedly mounted between the two circular rings, and the diameters of the two circular rings correspond to the diameters of the fixed shaft (5) and the sliding shaft (8), respectively.

3. The tweezers for preventing excessive clamping force according to claim 1, characterized in that: The limiting assembly comprises a primary threaded rod (10) and a secondary threaded rod (11); the primary threaded rod (10) and the secondary threaded rod (11) are threadedly mounted on the U-shaped slide rail (6), and the secondary threaded rod (11) is located below the primary threaded rod (10).

4. The tweezers for preventing excessive clamping force according to claim 1, characterized in that: The rotating assembly comprises a driving gear (15), a fixing block (16), a rotating shaft (17) and a rotating handle (18); the rotating shaft (17) is rotatably mounted on the tweezer arm (1) via the fixing block (16); one end of the rotating shaft (17) is fixedly mounted with the driving gear (15); and the other end of the rotating shaft (17) is fixedly mounted with the rotating handle (18).

5. The tweezers for preventing excessive clamping force according to claim 4, characterized in that: The transmission assembly comprises a slot body (9), a gear ring (13) and a transmission shaft (14); two slot bodies (9) are provided on the tweezer arm (1); a transmission shaft (14) matched with the slot body (9) is rotatably mounted between the two slot bodies (9); gear rings (13) are fixedly mounted at both ends of the transmission shaft (14); and the gear ring (13) close to the rotating shaft (17) is meshed with a driving gear (15).

6. The tweezers for preventing excessive clamping force according to claim 5, characterized in that: The rotating assembly comprises a transmission gear (19), a roller (20), an inner gear ring (21) and a gear (22); a circular groove is provided on the tweezer head (4); a roller (20) is rotatably mounted between the tweezer arm (1) and the circular groove; a transmission gear (19) meshing with the gear ring (13) is fixedly mounted on the roller (20); an inner gear ring (21) is fixedly mounted in the circular groove; and a gear (22) meshing with the inner gear ring (21) is fixedly mounted on the roller (20) located in the circular groove.

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