Imitated ratchet wrench

Abstract

The utility model discloses an imitated ratchet wrench, which relates to the technical field of wrenches and comprises a clamping mechanism, a handle, a reset mechanism and a locking mechanism, the clamping mechanism comprises a fixed clamping jaw, a rotating shaft and a movable clamping jaw, the fixed clamping jaw is fixed at the upper end of the handle, the rotating shaft is rotatably connected to the upper end of the handle, the movable clamping jaw is fixed on the rotating shaft, and the reset mechanism is fixed on the rotating shaft. The movable clamping jaw and the fixed clamping jaw can clamp the two sides of the threaded fastener correspondingly. The reset mechanism and the locking mechanism are both arranged on the handle, the reset mechanism is connected with the rotating shaft, and when the handle rotates around the threaded fastener from a first angle to a second angle, the reset mechanism can enable the movable clamping jaw to reset so as to keep the clamping angle between the movable clamping jaw and the fixed clamping jaw; the rotating shaft is provided with a locking groove, the locking mechanism can be connected with the locking groove in a clamped mode so as to lock the clamping angle between the movable clamping jaw and the fixed clamping jaw, and the locking mechanism can be separated from the locking groove so as to unlock the clamping angle between the movable clamping jaw and the fixed clamping jaw.

Description

Technical Field

[0001] The utility model relates to the technical field of wrenches, in particular to an imitation ratchet wrench. Background Technique

[0002] A wrench is a commonly used tool for screwing and unscrewing threaded fasteners such as bolts and nuts. A ratchet wrench is a wrench with a one-way self-rotation function. The handle of the ratchet wrench is connected to the wrench socket through a ratchet mechanism. Among them, the internal shape of the wrench socket (commonly hexagonal, dodecagonal, etc.) matches the shape of the threaded fastener, and the ratchet mechanism is the core structure of the ratchet wrench.

[0003] The ratchet mechanism is composed of components such as a ratchet, a pawl, and a spring. Among them, the ratchet is a toothed disc, and the pawl can cooperate with the ratchet. When the ratchet wrench rotates forward, the pawl catches into the tooth groove of the ratchet, driving the ratchet to rotate, thereby transmitting torque to realize the operation of tightening or loosening the threaded fastener; when the ratchet wrench rotates backward, the pawl slides over the back of the ratchet teeth, so that the ratchet does not rotate backward with the ratchet wrench. Therefore, based on the one-way transmission characteristic of the ratchet mechanism, when in use, taking tightening a bolt as an example, the user only needs to put the wrench socket on the bolt, and then move the handle back and forth. When moving forward, the torque is transmitted to the wrench socket through the ratchet mechanism and then acts on the bolt. When moving backward, the pawl slides over the ratchet, and the handle can quickly return to its position to prepare for the next forward movement, without having to completely remove and re-sleeve it on the bolt for the next operation like a common wrench.

[0004] However, due to the relatively complex ratchet mechanism of the ratchet wrench, precise cooperation between the ratchet and the pawl is required. After a long time of use or in a harsh working environment, the ratchet and the pawl may wear, thus affecting the working accuracy of the wrench. Once the accuracy decreases, slipping may occur and the torque cannot be effectively transmitted. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an imitation ratchet wrench to solve the problems existing in the above related technologies, and it can also realize the operation of tightening or loosening the threaded fastener without leaving the threaded fastener, without a complex ratchet mechanism.

[0006] To achieve the above purpose, the utility model provides the following scheme:

[0007] The utility model provides a ratchet wrench imitation, which comprises a clamping mechanism, a handle, a reset mechanism and a locking mechanism. The clamping mechanism comprises a fixed jaw, a rotating shaft and a movable jaw. The fixed jaw is fixed to the upper end of the handle. The rotating shaft is rotatably connected to the upper end of the handle. The movable jaw is fixed to the rotating shaft. The movable jaw and the fixed jaw can respectively clamp both sides of a threaded fastener. The reset mechanism and the locking mechanism are both arranged on the handle. The reset mechanism is connected to the rotating shaft. When the handle rotates from a first angle to a second angle around the threaded fastener, the reset mechanism can reset the movable jaw to maintain the clamping angle between the movable jaw and the fixed jaw. A locking groove is arranged on the rotating shaft. The locking mechanism can be clamped with the locking groove to lock the clamping angle between the movable jaw and the fixed jaw. Moreover, the locking mechanism can be separated from the locking groove to unlock the clamping angle between the movable jaw and the fixed jaw.

[0008] Preferably, a cavity is formed inside the upper end of the handle. The rotating shaft is rotatably connected inside the cavity. The reset mechanism comprises a rotating block, a reset spring anchor block and a reset spring. The rotating block is fixed to the rotating shaft. The reset spring anchor block is fixed inside the cavity at a position close to the rotating block. The reset spring is arranged between the rotating block and the reset spring anchor block.

[0009] Preferably, the locking mechanism comprises a locking spring anchor block, a locking spring, a locking pin, a button assembly and a transmission assembly. The locking spring anchor block is fixed inside the cavity at a position close to the rotating shaft. One end of the locking spring is fixedly connected to the locking spring anchor block, and the other end is fixedly connected to the locking pin. The locking pin is matched with the locking groove on the rotating shaft.

[0010] The button assembly is arranged on the outer wall of the cavity. The locking pin is connected to the button assembly through the transmission assembly. When the button assembly is released, the transmission assembly drives the locking pin to compress the locking spring so that the locking pin is separated from the locking groove. When the button assembly is pressed, the transmission assembly drives the locking pin to release the locking spring so that the locking pin is clamped with the locking groove.

[0011] Preferably, the button assembly comprises a button body. The button body is movably connected to the outer wall of the cavity. A connecting rod and a button spring are arranged inside the button body. One end of the connecting rod is fixedly connected to the button body, and the other end penetrates into the cavity and is connected to the transmission assembly. One end of the button spring abuts against the button body, and the other end abuts against the outer wall of the cavity.

[0012] Preferably, at least two groups of button springs are provided, and the two groups of button springs are respectively arranged on both sides of the connecting rod.

[0013] Preferably, the transmission assembly includes a first fixed pulley, a second fixed pulley and a pulling rope. The first fixed pulley is arranged at one end of the connecting rod away from the button body. The second fixed pulley is arranged in the cavity and is located between the first fixed pulley and the locking spring anchor block. One end of the pulling rope is fixed at a position in the cavity close to the first fixed pulley, and the other end forms a V-shaped track through the first fixed pulley and the second fixed pulley in sequence, and passes through the locking spring anchor block and is fixedly connected with the locking pin.

[0014] Preferably, the transmission assembly includes a fulcrum, a lever and a pull ring. The fulcrum is fixed in the cavity. The lever is rotatably connected to the fulcrum. The pull ring is fixed at one end of the connecting rod away from the button body. One end of the lever is fixedly connected with the pull ring, and the other end is fixedly connected with the locking pin.

[0015] Preferably, the locking groove is a square groove; the locking pin is of a square structure.

[0016] The utility model has achieved the following technical effects compared with the related art:

[0017] The ratchet wrench-like tool provided by the utility model includes a clamping mechanism, a handle, a reset mechanism and a locking mechanism. The clamping mechanism includes a fixed jaw, a rotating shaft and a movable jaw. Taking a threaded fastener such as a fastening nut as an example, in use, first, the locking mechanism is separated from the locking groove on the rotating shaft, so that the clamping angle between the movable jaw and the fixed jaw is in an unlocked state, which is convenient for the user to adjust the angle of the wrench and prepare for applying torque. After the wrench angle is adjusted, the movable jaw is reset through the reset mechanism to maintain the clamping angle between the movable jaw and the fixed jaw, so that the movable jaw and the fixed jaw respectively clamp on both sides of the nut. Then, the locking mechanism is engaged with the locking groove on the rotating shaft, so that the clamping angle between the movable jaw and the fixed jaw is in a locked state, which is convenient for the user to rotate the wrench to apply torque. When the wrench is rotated clockwise until it is not enough to continue tightening the nut, the clamping angle between the movable jaw and the fixed jaw is unlocked through the locking mechanism, the wrench is rotated counterclockwise to the initial position, and then the clamping angle between the movable jaw and the fixed jaw is locked through the locking mechanism, so as to continue rotating the wrench clockwise to tighten the nut. During the tightening process, the wrench does not leave the nut, achieving the same use effect as a ratchet wrench. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 FIG. 4 is a schematic internal structure diagram of the ratchet-like wrench provided in the first embodiment of the present invention.

[0020] In the figure: 1 - handle, 101 - cavity, 102 - fixing ring, 2 - fixing jaw, 3 - rotating shaft, 301 - locking groove, 4 - movable jaw, 5 - rotating block, 6 - reset spring anchor block, 7 - reset spring, 8 - locking spring anchor block, 9 - locking spring, 10 - locking pin, 11 - button body, 12 - connecting rod, 13 - button spring, 14 - first fixed pulley, 15 - second fixed pulley, 16 - pulling rope. Specific embodiments

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0022] The purpose of the present invention is to provide a ratchet-like wrench to solve the problems existing in related technologies, and it can also perform the operations of tightening or loosening a threaded fastener without a complex ratchet mechanism and without leaving the threaded fastener.

[0023] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0024] Embodiment 1

[0025] As Figure 1As shown in the figure, this embodiment provides an imitation ratchet wrench, which includes a clamping mechanism, a handle 1, a reset mechanism, and a locking mechanism. The clamping mechanism includes a fixed jaw 2, a rotating shaft 3, and a movable jaw 4. The fixed jaw 2 is fixed to the upper end of the handle 1. The rotating shaft 3 is rotatably connected to the upper end of the handle 1. The movable jaw 4 is fixed to the rotating shaft 3, and the movable jaw 4 and the fixed jaw 2 can respectively clamp on both sides of the threaded fastener. The reset mechanism and the locking mechanism are both arranged on the handle 1. The reset mechanism is connected to the rotating shaft 3. When the handle 1 rotates from a first angle to a second angle around the threaded fastener, the reset mechanism can reset the movable jaw 4 to maintain the clamping angle between the movable jaw 4 and the fixed jaw 2. A locking groove 301 is provided on the rotating shaft 3. The locking mechanism can be engaged with the locking groove 301 to lock the clamping angle between the movable jaw 4 and the fixed jaw 2, and the locking mechanism can be separated from the locking groove 301 to unlock the clamping angle between the movable jaw 4 and the fixed jaw 2.

[0026] In this embodiment, a cavity 101 is formed inside the upper end of the handle 1, and the rotating shaft 3 is rotatably connected inside the cavity 101. The reset mechanism includes a rotating block 5, a reset spring anchor block 6, and a reset spring 7. The rotating block 5 is fixed to the rotating shaft 3. The reset spring anchor block 6 is fixed inside the cavity 101 at a position close to the rotating block 5. In this embodiment, the reset spring anchor block 6 and the handle 1 are integrally provided. The reset spring 7 is arranged between the rotating block 5 and the reset spring anchor block 6. Through the rebounding action of the reset spring 7, the rotating block 5 can be pushed back to its original position, thereby driving the rotation of the rotating shaft 3 to keep the clamping angle between the movable jaw 4 and the fixed jaw 2 (that is, when the movable jaw 4 and the fixed jaw 2 respectively clamp on both sides of the threaded fastener and are respectively in contact with both sides of the threaded fastener, the angle between the movable jaw 4 and the fixed jaw 2).

[0027] It should be noted that, in order to clearly show the internal structure of the imitation ratchet wrench provided in this embodiment, Figure 1 is a schematic diagram of the imitation ratchet wrench provided in this embodiment when the cover plate is removed. Among them, a fixed ring 102 is provided at the upper end of the handle 1, and the rotating shaft 3 is rotatably connected in the fixed ring 102.

[0028] In this embodiment, the locking mechanism includes a locking spring anchor block 8, a locking spring 9, a locking pin 10, a button assembly, and a transmission assembly. The locking spring anchor block 8 is fixed inside the cavity 101 at a position close to the rotating shaft 3. One end of the locking spring 9 is fixedly connected to the locking spring anchor block 8, and the other end is fixedly connected to the locking pin 10. The locking pin 10 is matched with the locking groove 301 on the rotating shaft 3. Specifically, the locking groove 301 in this embodiment is a square groove, the locking pin 10 is a square structure, and the end of the locking pin 10 away from the locking spring 9 is chamfered to facilitate insertion into the locking groove 301.

[0029] Further, the button assembly is disposed on the outer wall of the cavity 101, and the locking pin 10 is connected to the button assembly through a transmission assembly. When the button assembly is released, the transmission assembly drives the locking pin 10 to compress the locking spring 9, so that the locking pin 10 is separated from the locking groove 301, thereby making the clamping angle between the movable jaw 4 and the fixed jaw 2 in an unlocked state, facilitating the user to adjust the wrench angle and prepare for applying torque; when the button assembly is pressed, the transmission assembly drives the locking pin 10 to release the locking spring 9, so that the locking pin 10 is engaged with the locking groove 301, thereby making the clamping angle between the movable jaw 4 and the fixed jaw 2 in a locked state, facilitating the user to rotate the wrench to apply torque.

[0030] In this embodiment, the button assembly includes a button body 11, the button body 11 is movably connected to the outer wall of the cavity 101, and a connecting rod 12 and a button spring 13 are arranged inside the button body 11; one end of the connecting rod 12 is fixedly connected to the button body 11, and the other end penetrates into the cavity 101 and is connected to the transmission assembly; one end of the button spring 13 abuts against the button body 11, and the other end abuts against the outer wall of the cavity 101.

[0031] Further, at least two groups of button springs 13 are provided, and the two groups of button springs 13 are respectively arranged on both sides of the connecting rod 12.

[0032] In this embodiment, the transmission assembly includes a first fixed pulley 14, a second fixed pulley 15 and a pulling rope 16. The first fixed pulley 14 is arranged at one end of the connecting rod 12 away from the button body 11. The second fixed pulley 15 is arranged in the cavity 101 and is located between the first fixed pulley 14 and the locking spring anchor block 8; one end of the pulling rope 16 is fixed at a position in the cavity 101 close to the first fixed pulley 14, and the other end forms a V-shaped track through the first fixed pulley 14 and the second fixed pulley 15 in sequence, and passes through the locking spring anchor block 8 and is fixedly connected to the locking pin 10; under normal conditions, as Figure 1 shown, the pulling rope 16 is tightened to the right by the connecting rod 12 of the button assembly, so that the locking pin 10 is separated from the locking groove 9. When torque needs to be applied, the button assembly is pressed, the connecting rod 12 moves to the left to relax the pulling rope 16, and under the action of the locking spring 9, the locking pin 10 is engaged in the locking groove 301, locking the clamping angle between the movable jaw 4 and the fixed jaw 2, facilitating the user to rotate the wrench to apply torque; in the above process, the first fixed pulley 14 plays a role in reducing wear, and the second fixed pulley 15 plays a role in changing the force direction of the pulling rope 16.

[0033] The usage process of the ratchet-like wrench provided in this embodiment is as follows:

[0034] Taking the threaded fastener such as a fastening nut as an example, during use, first, the user does not need to press the button assembly. In this state, the locking pin 10 is separated from the locking groove 301 on the rotating shaft 3, so that the clamping angle between the movable jaw 4 and the fixed jaw 2 is in an unlocked state, facilitating the user to adjust the wrench angle and prepare for applying torque. After the wrench angle is adjusted, the movable jaw 4 is reset by the return spring 7 to maintain the clamping angle between the movable jaw 4 and the fixed jaw 2, so that the movable jaw 4 and the fixed jaw 2 respectively clamp on both sides of the nut and are respectively in contact with both sides of the nut. Then, the button assembly is pressed. In this state, the locking pin 10 is engaged with the locking groove 301 on the rotating shaft 3, so that the clamping angle between the movable jaw 4 and the fixed jaw 2 is in a locked state, facilitating the user to rotate the wrench to apply torque. When the wrench is rotated clockwise until it is not enough to continue tightening the nut, the button assembly is released to unlock the clamping angle between the movable jaw 4 and the fixed jaw 2, and the wrench is rotated counterclockwise to the initial position, and then the button assembly is pressed again to lock the clamping angle between the movable jaw 4 and the fixed jaw 2, so as to continue rotating the wrench clockwise to tighten the nut. During the tightening process, the wrench does not leave the nut, achieving the same use effect as a ratchet wrench.

[0035] Embodiment 2

[0036] The difference between this embodiment and Embodiment 1 lies in the different structure of the transmission assembly. The transmission assembly in this embodiment includes a fulcrum, a lever and a pull ring. The fulcrum is fixed in the cavity 101, the lever is rotatably connected to the fulcrum, the pull ring is fixed to the end of the connecting rod 12 away from the button body 11, one end of the lever is fixedly connected to the pull ring, and the other end is fixedly connected to the locking pin 10. The movement of the lever is controlled by the button assembly to realize the locking and unlocking of the locking pin 10 and the locking groove 301.

[0037] In the present utility model, specific examples are used to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A ratchet wrench imitation, characterized in that: It includes a clamping mechanism, a handle, a reset mechanism and a locking mechanism. The clamping mechanism includes a fixed jaw, a rotating shaft and a movable jaw. The fixed jaw is fixed to the upper end of the handle. The rotating shaft is rotatably connected to the upper end of the handle. The movable jaw is fixed to the rotating shaft, and the movable jaw and the fixed jaw can respectively clamp on both sides of a threaded fastener. The reset mechanism and the locking mechanism are both arranged on the handle. The reset mechanism is connected to the rotating shaft. When the handle rotates from a first angle to a second angle around the threaded fastener, the reset mechanism can reset the movable jaw to maintain the clamping angle between the movable jaw and the fixed jaw. A locking groove is arranged on the rotating shaft, and the locking mechanism can be engaged with the locking groove to lock the clamping angle between the movable jaw and the fixed jaw, and the locking mechanism can be separated from the locking groove to unlock the clamping angle between the movable jaw and the fixed jaw.

2. The ratchet wrench imitation according to claim 1, wherein: A cavity is formed inside the upper end of the handle, and the rotating shaft is rotatably connected inside the cavity. The reset mechanism includes a rotating block, a reset spring anchor block and a reset spring. The rotating block is fixed to the rotating shaft, the reset spring anchor block is fixed at a position inside the cavity close to the rotating block, and the reset spring is arranged between the rotating block and the reset spring anchor block.

3. The ratchet wrench imitation according to claim 2, characterized in that: The locking mechanism includes a locking spring anchor block, a locking spring, a locking pin, a button assembly and a transmission assembly. The locking spring anchor block is fixed at a position inside the cavity close to the rotating shaft. One end of the locking spring is fixedly connected to the locking spring anchor block, and the other end is fixedly connected to the locking pin, and the locking pin is matched with the locking groove on the rotating shaft. The button assembly is arranged on the outer wall of the cavity, and the locking pin is connected to the button assembly through the transmission assembly. When the button assembly is released, the transmission assembly drives the locking pin to compress the locking spring so that the locking pin is separated from the locking groove. When the button assembly is pressed, the transmission assembly drives the locking pin to release the locking spring so that the locking pin is engaged with the locking groove.

4. The ratchet wrench imitation according to claim 3, characterized in that: The button assembly includes a button body. The button body is movably connected to the outer wall of the cavity, and a connecting rod and a button spring are arranged inside the button body. One end of the connecting rod is fixedly connected to the button body, and the other end penetrates into the cavity and is connected to the transmission assembly. One end of the button spring abuts against the button body, and the other end abuts against the outer wall of the cavity.

5. The ratchet wrench imitation according to claim 4, characterized in that: At least two groups of button springs are provided, and the two groups of button springs are respectively arranged on both sides of the connecting rod.

6. The ratchet wrench imitation according to claim 4, characterized in that: The transmission assembly includes a first fixed pulley, a second fixed pulley, and a pulling rope. The first fixed pulley is disposed at an end of the connecting rod away from the button body. The second fixed pulley is disposed in the cavity and is located between the first fixed pulley and the locking spring anchor block. One end of the pulling rope is fixed at a position in the cavity near the first fixed pulley, and the other end forms a V-shaped track through the first fixed pulley and the second fixed pulley in sequence, and passes through the locking spring anchor block and is fixedly connected to the locking pin.

7. The ratchet wrench imitation according to claim 4, characterized in that: The transmission assembly includes a fulcrum, a lever, and a pull ring. The fulcrum is fixed in the cavity. The lever is rotatably connected to the fulcrum. The pull ring is fixed at an end of the connecting rod away from the button body. One end of the lever is fixedly connected to the pull ring, and the other end is fixedly connected to the locking pin.

8. The ratchet wrench imitation according to claim 6 or 7, characterized in that: The locking groove is a square groove; the locking pin is a square structure.

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