An industrial grade dustproof ratchet wrench

Abstract

An industrial grade dustproof ratchet wrench relates to the technical field of wrenches. The industrial grade dustproof ratchet wrench comprises a wrench body, a ratchet, a pawl and a direction twist. The direction twist comprises a lever, a twist part and a guide sleeve. When the direction twist is pulled to one side, the guide sleeve pushes the pawl to engage with the ratchet under the pushing of the first spring. At this time, the ratchet, the pawl and the wrench body form a direction lock, so that the screw can be twisted in this direction by using the wrench. When the wrench is rotated in the opposite direction, the ratchet and the pawl are separated under the retraction function of the first spring, so as to achieve the function of the ratchet returning. When the ordinary ratchet wrench is rotated to one side, the direction twist may appear to rotate back when the ratchet is rapidly rotated to retreat. The twist part structure is improved, and a spring steel ball ejection structure is additionally arranged at the rear of the direction twist. Under the ejection force of the second spring, the steel ball and the direction twist form a stable state, and the stability of the direction twist when the ratchet is rapidly rotated is increased.

Description

Technical Field

[0001] This utility model relates to a wrench, and more particularly to an improved structure of an industrial-grade dustproof ratchet wrench. Background Technology

[0002] In various fastening / disassembly operations such as machinery repair, automobile maintenance, equipment installation, and home renovation, the installation and disassembly of fasteners such as bolts and nuts are among the core processes. Traditional open-end wrenches and box wrenches, while simple in structure and low in cost, have significant limitations in practical use: these tools require a complete 360° rotation around the fastener to achieve effective tightening or disassembly. When the working environment is a confined space (such as an engine compartment, deep equipment cavity), a densely packed pipeline area, or a hidden corner, there is often insufficient operating space for the wrench to rotate completely. This leads to the need to repeatedly remove the tool, adjust the angle, and re-lock it, which is not only cumbersome and inefficient but may also cause wear and tear on the fasteners or surrounding parts due to frequent disassembly and assembly.

[0003] To address the technical pain points of traditional wrenches, such as high operating space requirements and low work efficiency, the ratchet wrench was developed. Its core innovation lies in its built-in ratchet mechanism, combined with the angle adjustment function of a reversing switch. This allows the tool to transmit torque with only a 10°-30° unidirectional swing, enabling continuous tightening or loosening of fasteners without the need for repeated adjustments to the tool's engagement with the fastener. The ratchet wrench's unidirectional transmission characteristic makes it a core tool, and the reliable switching of its directional torque (reversing switch) directly determines work efficiency and safety. By moving the directional torque, the ratchet can be controlled to rotate in both directions, meeting the dual needs of tightening and loosening fasteners. Especially in confined spaces, continuous work can be completed without repeated adjustments to the tool angle, significantly improving operational convenience.

[0004] However, the directional torque design of existing ordinary ratchet wrenches has significant flaws, easily leading to functional failures in critical work scenarios. When the directional torque is shifted to one side and the operator quickly rotates the ratchet for a tooth-removing operation, the directional torque often unexpectedly reverses direction, switching to the other side on its own. This problem is particularly prominent in high-frequency tooth-removing operations, such as removing bolts from an automotive engine compartment or repairing mechanical parts. Operators need to concentrate on controlling the tool's force, and unexpected directional torque reversal is often difficult to detect in time. Unexpected directional torque reversal directly causes ratchet transmission direction disorder, suddenly turning the tooth-removing operation into a tightening action. This not only interrupts the work process but may also cause impact engagement between the ratchet and pawl, accelerating tooth surface wear. More seriously, the sudden reversal can easily cause tool jamming or abrupt changes in hand force, increasing safety hazards such as bolt stripping and tool snapping. This reduces work quality and may cause injury to the operator and surrounding parts, becoming a core technical weakness restricting the reliability of ordinary ratchet wrenches. Therefore, how to improve the stability after directional turning within the existing space of a ratchet wrench is a technical problem that urgently needs to be solved in this case. Utility Model Content

[0005] This invention addresses the above problems by providing an industrial-grade dustproof ratchet wrench that improves stability after directional torsion based on existing spatial structures. The technical solution of this utility model is: An industrial-grade dustproof ratchet wrench includes a wrench body, a ratchet, a pawl, and a directional knob; the wrench body has adjacent ratchet grooves and pawl grooves at its end; the pawl groove has a directional knob mounting cavity on its side; The directional twist includes: A lever is located on the end face of the lever body; The twisting part is housed inside the direction knob mounting cavity and is fixedly connected to the lever. The operator controls the rotation direction of the twisting part by moving the lever. A guide hole is provided at the front end of the twisting part. A guide sleeve is disposed in the guide hole, and the guide sleeve is pushed towards the pawl by the elastic force of the first spring in the guide hole; The tail end of the twisting part is provided with a pair of arc-shaped recesses; the body of the plate is provided with a limiting hole that communicates with the directional twisting installation cavity, and the limiting hole is provided with a steel ball (520) that extends out through a second spring and abuts against the arc-shaped recesses.

[0006] Specifically, the ratchet is rotatably disposed within the ratchet groove.

[0007] Specifically, the pawl is oscillatingly disposed within the pawl groove and engages with the outer toothed ring of the ratchet.

[0008] Specifically, the back of the pawl is provided with a guide groove that is adapted to the guide sleeve.

[0009] Specifically, the front end of the twisting part is a planar area in the middle, and the two sides are symmetrically arranged inclined areas; The guide hole is located in the planar area.

[0010] Specifically, a connecting part is provided between the twisting part and the lever; The connecting part is provided with a first sealing groove, and the first sealing groove is provided with a matching first sealing ring.

[0011] Specifically, the lever body is provided with a cover plate groove that communicates with the ratchet groove and the pawl groove.

[0012] Specifically, the cover plate groove is provided with a cover plate that can be detachably and fixedly installed via a connector.

[0013] Specifically, a second sealing ring is provided between the cover plate and the bottom of the cover plate groove.

[0014] Specifically, the ratchet has a third sealing groove on the side facing the cover plate that is adapted to the third sealing ring.

[0015] This utility model includes a wrench body, a ratchet, a pawl, and a directional knob. The directional knob includes a lever, a twisting part, and a guide sleeve. The tail end of the twisting part has a pair of arc-shaped recesses. The wrench body has a limiting hole communicating with the mounting cavity of the directional knob. A steel ball extends through a second spring and rests against the arc-shaped recess in the limiting hole. When the directional knob is pulled to one side, the guide sleeve pushes the pawl to engage with the ratchet under the push of the first spring. At this time, the ratchet, pawl, and wrench body form a directional lock, and the screw can be turned in this direction with a wrench. When the wrench is turned in the opposite direction, with the rotation of the ratchet, the ratchet and pawl are separated under the retraction function of the first spring, so as to achieve the function of ratchet retraction. When the directional knob of a conventional ratchet wrench is turned to one side, the directional knob may rotate back when the ratchet is quickly rotated to retract the teeth. This invention improves the structure of the twisting part and adds a spring steel ball ejection structure behind the directional knob. Under the action of the ejection force of the second spring, the steel ball and the directional knob form a stable state, increasing the stability of the directional knob when the ratchet is rotated quickly. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic cross-sectional view of the present invention; Figure 3 This is a three-dimensional structural diagram of the connection between the pawl and the guide sleeve; Figure 4 This is a schematic diagram of the three-dimensional structure of the lever; Figure 5 This is a three-dimensional structural diagram of the pressure strip installation state; Figure 6This is a three-dimensional structural diagram of the connection surface between the cover plate and the plate body; Figure 7 This is a schematic diagram of the cross-sectional structure of the ratchet in its installed state; In the diagram, 100 is the lever body, 200 is the ratchet, 210 is the third sealing groove, 300 is the pawl, 310 is the guide groove, 400 is the directional knob, 410 is the lever, 420 is the torsion part, 421 is the arc-shaped recess, 422 is the flat area, 430 is the guide sleeve, 431 is the first spring, 440 is the first sealing ring, 510 is the second spring, 520 is the steel ball, 600 is the cover plate, and 700 is the pressure strip. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "vertical," "horizontal," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The following is for reference. Figure 1-7 Description according to this utility model; An industrial-grade dustproof ratchet wrench includes a wrench body 100, a ratchet 200, a pawl 300, and a directional torque 400; the wrench body 100 has adjacent ratchet grooves and pawl grooves at its ends; the pawl groove has a directional torque mounting cavity on its side. The ratchet 200 is rotatably disposed in the ratchet groove; the pawl 300 is swingably disposed in the pawl groove and meshes with the outer tooth ring of the ratchet 200; at the same time, the back of the pawl 300 is provided with a guide groove 310 that is adapted to the guide sleeve 430.

[0021] Steering torque 400 includes: A lever 410 is located on the end face of the lever body 100; The twisting part 420 is housed inside the direction knob mounting cavity and is fixedly connected to the lever 410. The operator controls the rotation direction of the twisting part 420 by moving the lever 410. A guide hole is provided at the front end of the twisting part 420. A guide sleeve 430 is disposed in the guide hole. The guide sleeve 430 is pushed towards the pawl 300 by the elastic force of the first spring 431 in the guide hole. A slot is provided below the guide hole and is parallel to the axis of the guide hole. A pressure strip 700 is provided in the slot to improve the stability of the ratchet 200 after installation and prevent it from moving up and down. The tail end of the twisting part 420 is provided with a pair of arc-shaped recesses 421; the wrench body 100 is provided with a limiting hole that communicates with the directional twisting installation cavity, and the limiting hole is provided with a steel ball 520 that extends out through the second spring 510 and abuts against the arc-shaped recesses 421.

[0022] The front end of the twisting part 420 is a planar area 422 in the middle, and the two sides are symmetrically arranged inclined areas; the guide hole is located in the planar area 422.

[0023] The lever body 100 is provided with a cover plate groove that communicates with the ratchet groove and the pawl groove. A cover plate 600 is provided on the cover plate groove and can be detachably fixed by a connector.

[0024] When the accessory is installed in the wrench body, when the direction is turned 400 degrees to one side, the guide sleeve 430, under the push of the first spring 431, pushes the pawl 300 to engage with the ratchet 200. At this time, the ratchet 200, the pawl 300, and the wrench body 100 form a directional lock, and the screw can be turned in this direction with the wrench 100. When the wrench 100 rotates in the opposite direction, with the rotation of the ratchet 200, the ratchet 200 and the pawl 300 are separated by the retraction function of the first spring 431, so that the ratchet 200 has the function of retracting. When a regular ratchet wrench is turned to one side, the ratchet 200 is quickly rotated. When the ratchet retracts, the directional torque 400 may rotate (turn to the other side). This design improves the structure of the torque part 420 and adds a spring-loaded steel ball ejection structure behind the directional torque 400. Under the ejection force of the second spring 510, the steel ball 520 and the directional torque 400 form a stable state, increasing the stability of the directional torque when the ratchet rotates rapidly. Furthermore, setting the limiting hole to an inclined state can further enhance the engagement depth between the steel ball and the limiting hole, optimize the force transmission path, reduce the wear rate of local components, and extend the service life of the second spring 510 and the steel ball 520.

[0025] In a standard ratchet wrench, after all the accessories are installed into the wrench body, there will be a certain gap between the cover plate and the wrench body, and between the ratchet and the directional knob and the wrench body. This gap allows dust to enter, and through a chain reaction of "intrusion-wear-failure," it seriously affects the tool's performance, reliability, and service life. Therefore, this paper makes the following further improvements to the wrench structure: A second sealing ring is provided between the cover plate 600 and the bottom of the cover plate groove. That is, the edge of the back side (facing outward is the front) of the cover plate 600 is provided with a concave edge that is adapted to the second sealing ring to accommodate the second sealing ring.

[0026] The ratchet 200 has a third sealing groove 210 on the side facing the cover plate 600, which is adapted to the third sealing ring.

[0027] A connecting part is provided between the twisting part 420 and the lever 410; a first sealing groove is provided on the connecting part, and a matching first sealing ring 440 is provided on the first sealing groove.

[0028] This design utilizes the aforementioned dustproof sealing rings. The components are sequentially installed into the wrench body cavity, and then screws coated with thread-locking adhesive (note: these adhesive screws serve to prevent loosening and dust) are used to secure the cover plate 600 to the wrench body 100. With the sealing rings and adhesive screws at three locations, the interior of the wrench body 100 is completely isolated from the outside, forming a dustproof and waterproof sealed space. When the wrench is used in particularly harsh environments, it effectively prevents sand, sewage, oil, and other contaminants from entering, preventing jamming or stiff rotation, ensuring stable use, and extending service life.

[0029] Regarding the information disclosed in this case, the following points need to be clarified: (1) The accompanying drawings of the embodiments disclosed in this case only involve the structures involved in the embodiments disclosed in this case. Other structures can refer to the general design. (2) Where there is no conflict, the embodiments and features disclosed in this case can be combined with each other to obtain new embodiments; The above are merely specific embodiments disclosed in this case, but the scope of protection of this disclosure is not limited thereto. The scope of protection disclosed in this case shall be determined by the scope of protection of the claims.

Claims

1. An industrial-grade dustproof ratchet wrench, characterized in that, It includes a lever body (100), a ratchet (200), a pawl (300), and a directional knob (400); the end of the lever body (100) is provided with adjacent ratchet grooves and pawl grooves; the side of the pawl groove is provided with a directional knob mounting cavity; The directional torque (400) includes: A lever (410) is located on the end face of the lever body (100); The twisting part (420) is housed inside the direction knob mounting cavity and is fixedly connected to the lever (410). The operator controls the rotation direction of the twisting part (420) by moving the lever (410). A guide hole is provided at the front end of the twisting part (420). The guide sleeve (430) is disposed in the guide hole. The guide sleeve (430) is pushed towards the pawl (300) by the elastic force of the first spring (431) in the guide hole. The tail end of the twisting part (420) is provided with a pair of arc-shaped recesses (421); the wrench body (100) is provided with a limiting hole that communicates with the directional twisting installation cavity, and the limiting hole is provided with a steel ball (520) that extends out through the second spring (510) and abuts against the arc-shaped recesses (421).

2. The industrial-grade dustproof ratchet wrench according to claim 1, characterized in that, The ratchet (200) is rotatably disposed within the ratchet groove.

3. The industrial-grade dustproof ratchet wrench according to claim 1, characterized in that, The pawl (300) is oscillatingly disposed in the pawl groove and engages with the outer gear ring of the ratchet (200).

4. An industrial-grade dustproof ratchet wrench according to claim 1, characterized in that, The back of the pawl (300) is provided with a guide groove (310) that is adapted to the guide sleeve (430).

5. An industrial-grade dustproof ratchet wrench according to claim 1, characterized in that, The front end of the twisting part (420) is a planar area (422) in the middle, and the two sides are symmetrically arranged inclined areas; The guide hole is located in the planar region (422).

6. An industrial-grade dustproof ratchet wrench according to claim 1, characterized in that, A connecting part is provided between the twisting part (420) and the lever (410); The connecting part is provided with a first sealing groove, and the first sealing groove is provided with a matching first sealing ring (440).

7. An industrial-grade dustproof ratchet wrench according to claim 1, characterized in that, The lever body (100) is provided with a cover plate groove that communicates with the ratchet groove and the pawl groove.

8. An industrial-grade dustproof ratchet wrench according to claim 7, characterized in that, The cover plate groove is provided with a cover plate (600) that can be detachably and fixedly installed by a connector.

9. An industrial-grade dustproof ratchet wrench according to claim 8, characterized in that, A second sealing ring is provided between the cover plate (600) and the bottom of the cover plate groove.

10. An industrial-grade dustproof ratchet wrench according to claim 8, characterized in that, The ratchet (200) has a third sealing groove (210) on the side facing the cover plate (600) that is adapted to the third sealing ring.

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