Ratchet wrench capable of changing force arm

Abstract

The ratchet wrench comprises a force arm assembly and a replacement assembly, the force arm assembly comprises an inner guide block and a force arm body, the inner guide block is sleeved with the force arm body in a sliding mode, an anti-skid sleeve is arranged on the outer wall of the force arm body, a cavity is formed in the force arm body, and the replacement assembly is arranged in the cavity. A sliding block is slidably connected to the interior of the cavity, and an insertion block is fixedly arranged on the outer wall of the sliding block; according to the force arm assembly, the force arm body can slide outside the inner guide block, the total length of the force arm body and the inner guide block can be adjusted, then the total length of the force arm assembly can be changed, and when a screw needing to be disassembled and assembled is located in a deep gap, the ratchet wrench can stretch into the deep position in the gap to disassemble and assemble the screw. When the moment arm needs to be used or a short moment arm needs to be used, the total length of the moment arm assembly can be adjusted to be shortened, and after use is finished, the moment arm assembly is adjusted to be the shortest, so that carrying is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of ratchet wrench, specifically a kind of ratchet wrench with changeable force arm, belong to ratchet wrench technical field. BACKGROUND

[0002] Ratchet wrench is a kind of hand-operated screw tightening and loosening tool, and is single-head, double-head multi-specification movable handle ratchet wrench.

[0003] Chinese patent number CN221696717U provides a ratchet wrench comprising: a body; a housing connected with the body and having an opening; a first ratchet wheel rotatably arranged in the housing and comprising a superior arc ratchet wheel and an inferior arc ratchet wheel forming a detachable connection with the superior arc ratchet wheel; the inferior arc ratchet wheel is configured to be connected with the superior arc ratchet wheel in the housing through the opening;

[0004] However, the above-mentioned case can adapt to a wider working scenario, and has better practicality, but does not have the length of the force arm adjusted and changed. If the length of the force arm is short, the ratchet wrench cannot be inserted into the deep gap to disassemble and assemble the screw when the screw to be disassembled is in a deep gap. If the length of the force arm is long, it is not convenient to carry.

[0005] Therefore, the utility model is proposed. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a ratchet wrench with changeable force arm to solve the above problems.

[0007] The utility model realizes the above-mentioned purpose through the following technical scheme, a kind of ratchet wrench with changeable force arm, including force arm assembly and replacement component, the force arm assembly includes inner guide block and force arm body, the force arm body is slidably sleeved in the outside of inner guide block, the outer wall of the force arm body is provided with anti-skid sleeve, the inside of the force arm body is provided with cavity, and the inside of cavity is slidably connected with sliding block, the outer wall of the sliding block is fixedly provided with insert block, the inner wall of the inner guide block is provided with a plurality of insert slots, and the insert block is inserted in the inside of insert slot, the inner wall of the cavity is provided with guide rod, and the sliding block is slidably sleeved in the outside of guide rod, the inner wall of the cavity is provided with spring one connected with sliding block, the outer wall of the top of sliding block is provided with push block extending the top of force arm body, one end of the inner guide block is provided with rotating assembly, the rotating assembly includes rotating seat and rotating block, and the rotating seat is fixedly arranged in one end of inner guide block, the rotating block is rotatably connected in the inside of rotating seat.

[0008] Further, the rotating block is internally provided with a rotating rod, and the rotating rod is rotatably connected to the inside of the rotating seat through a bearing.

[0009] Further, the rotating seat is internally provided with a movable cavity, and the rotating rod is provided with a gear on the outer wall inside the movable cavity.

[0010] Further, the inside of the movable cavity is slidably connected with a lifting plate, and the outer wall of the bottom of the lifting plate is provided with a tooth, which is in mesh with the gear.

[0011] Further, the inner wall of the movable cavity is provided with a limiting rod, and the lifting plate is slidably sleeved on the outside of the limiting rod, the outer wall of the top of the rotating seat is screwedly inserted with a pressing screw, and the bottom end of the pressing screw is rotatably connected with the lifting plate through a bearing.

[0012] Further, the replacement assembly comprises a fixed seat and a ratchet body, the fixed seat is fixedly arranged on the outer wall of the rotating block, and the ratchet body is clamped in the inside of the fixed seat.

[0013] Further, the inside of the fixed seat is slidably connected with a fixed block, and the outer wall of the two sides of the ratchet body is provided with a fixed groove, the fixed block is inserted into the inside of the fixed groove, and the inner wall of the fixed seat is provided with a spring two connected with the fixed block.

[0014] Further, the inside of the fixed seat is slidably connected with a pressing block, and the inside of the fixed seat is provided with a spring three connected with the pressing block, the outer wall of one side of the fixed seat is screwedly inserted with a pushing screw, and one end of the pushing screw located in the inside of the fixed seat is provided with a pressing cone.

[0015] The utility model discloses technical effect and advantage: (1) through setting up the force arm subassembly, can with the inside guide block outside sliding of force arm body, can adjust the total length of force arm body and inside guide block, and then can change the total length of force arm subassembly, when the screw of required dismounting is in the deeper gap, this ratchet spanner can also enter the inside deep place of gap and dismount the screw, or need to use shorter force arm length, and also can adjust the total length of force arm subassembly and be shorter, and after use, adjust force arm subassembly to the shortest, convenient to carry, (2) through setting up the rotation subassembly, through the rotation of twist, can drive rotation link and rotation block, and rotation block drives fixed seat and ratchet wheel body rotation, can adjust the angle between ratchet wheel body and force arm body, can be applicable to the working situation of screw dismounting under different angles, (3) through setting up the replacement subassembly, rotation push screw drives extrusion cone movement, at this moment, extrusion block is not extruded by extrusion cone, spring three drive extrusion block back shift, spring two will drive fixed block and remove from fixed groove, can lose the fixing of ratchet wheel body, can change different ratchet wheel body according to the shape of screw dismounting, make the use range of this ratchet spanner more extensive. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0017] Figure 2 It is the force arm subassembly structure schematic diagram of the utility model;

[0018] Figure 3 It is the inside overhead structure schematic diagram of rotation seat of the utility model;

[0019] Figure 4 It is the inside structure schematic diagram of movable cavity of the utility model;

[0020] Figure 5 It is the replacement subassembly structure schematic diagram of the utility model.

[0021] In the drawing: 100, force arm subassembly;101, inside guide block;102, force arm body;103, antiskid cover;104, cavity;105, sliding block;106, plug block;107, insertion slot;108, guide rod;109, spring one;110, push block;200, rotation subassembly;201, rotation seat;202, rotation block;203, rotation link;204, movable cavity;205, gear;206, twist;207, lifting plate;208, tooth;209, extrusion screw;210, limit rod;300, replacement subassembly;301, fixed seat;302, ratchet wheel body;303, fixed block;304, fixed slot;305, spring two;306, extrusion block;307, spring three;308, push screw;309, extrusion cone. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0023] Please refer to Figures 1-5 As shown in FIG. 1, a ratchet wrench capable of changing the force arm includes a force arm assembly 100 and a replacement assembly 300. The force arm assembly 100 includes an inner guide block 101 and a force arm body 102. The force arm body 102 is slidingly sleeved on the outside of the inner guide block 101. An anti-skid sleeve 103 is arranged on the outer wall of the force arm body 102. A cavity 104 is arranged in the inside of the force arm body 102. A sliding block 105 is slidingly connected in the inside of the cavity 104. An insertion block 106 is fixedly arranged on the outer wall of the sliding block 105. A plurality of insertion slots 107 are formed in the inner wall of the inner guide block 101. The insertion block 106 is inserted in the inside of the insertion slots 107. A guide rod 108 is arranged on the inner wall of the cavity 104. The sliding block 105 is slidingly sleeved on the outside of the guide rod 108. A spring I 109 connected with the sliding block 105 is arranged on the inner wall of the cavity 104. A push block 110 extending from the top of the force arm body 102 is arranged on the outer wall of the top of the sliding block 105. The force arm body 102 can slide on the outside of the inner guide block 101. The overall length of the force arm assembly 100 can be adjusted. The force arm assembly 100 can be used for disassembling and assembling screws in deep gaps. The force arm assembly 100 can be used in different length requirements. After use, the force arm assembly 100 can be adjusted to the shortest length for convenient carrying.

[0024] One end of the inner guide block 101 is provided with a rotating assembly 200, the rotating assembly 200 comprises a rotating seat 201 and a rotating block 202, and the rotating seat 201 is fixedly arranged at one end of the inner guide block 101, the rotating block 202 is rotatably connected in the interior of the rotating seat 201, the rotating block 202 is fixedly arranged with a rotating rod 203 on the inner wall, and the rotating rod 203 is rotatably connected in the interior of the rotating seat 201 through a bearing, one end of the rotating rod 203 located outside the rotating seat 201 is provided with a rotating knob 206, the interior of the rotating seat 201 is provided with a movable cavity 204, and the outer wall of the rotating rod 203 located in the interior of the movable cavity 204 is provided with a gear 205, the interior of the movable cavity 204 is slidably connected with a lifting plate 207, and the outer wall of the bottom of the lifting plate 207 is provided with a tooth 208, the tooth 208 and the gear 205 are meshed with each other, the inner wall of the movable cavity 204 is provided with a limiting rod 210, and the lifting plate 207 is slidably sleeved outside the limiting rod 210, the outer wall of the top of the rotating seat 201 is screwedly inserted with a pressing screw 209, and the bottom end of the pressing screw 209 is rotatably connected with the lifting plate 207 through a bearing, the rotating knob 206 can drive the rotating block 202 to rotate, the rotating block 202 can drive the fixed seat 301 and the ratchet body 302 to rotate, the angle between the ratchet body 302 and the force arm body 102 can be adjusted, and the screw can be disassembled at different angles, and the use is very flexible.

[0025] As a technical optimization scheme of the utility model, the replacement assembly 300 comprises a fixed seat 301 and a ratchet body 302, the fixed seat 301 is fixedly arranged on the outer wall of the rotating block 202, and the ratchet body 302 is clamped in the interior of the fixed seat 301, the interior of the fixed seat 301 is slidably connected with a fixed block 303, the outer walls on the two sides of the ratchet body 302 are both provided with a fixed groove 304, the fixed block 303 is inserted in the interior of the fixed groove 304, the inner wall of the fixed seat 301 is provided with spring two 305 connected with the fixed block 303, the interior of the fixed seat 301 is slidably connected with an extrusion block 306, the interior of the fixed seat 301 is provided with spring three 307 connected with the extrusion block 306, the outer wall on one side of the fixed seat 301 is screwedly inserted with a pushing screw 308, one end of the pushing screw 308 located in the interior of the fixed seat 301 is provided with an extrusion cone 309, the replacement assembly 300 is used for replacing different ratchet bodies 302 according to the shape of the screw to be disassembled, so that the ratchet wrench can disassemble screws of different shapes, the use range is wide, and the practicality of the ratchet wrench is improved.

[0026] The utility model discloses a length of force arm assembly 100 can be adjusted, can make the ratchet wrench reach into the gap deep place and disassemble and assemble the screw, loosen the push block 110, the elasticity of spring one 109 can push the slider 105 and the insert block 106 move, can make the insert block 106 insert in the slot 107 inside, can fix force arm body 102 to different length according to different use demand, after use, the length of force arm assembly 100 can be adjusted to the shortest, convenient to carry, need to change the angle of force arm body 102 and ratchet body 302, through the rotation of the twist 206 and drive the rotation of the rod 203 and the rotation block 202, the rotation block 202 drives the rotation of the fixed seat 301 and ratchet body 302, the rotation extrusion screw 209 drives the lifting plate 207 to move down, makes the gear teeth 208 be connected in the gear groove of gear 205, can fix the lifting plate 207, can fix gear 205, further also is the fixed seat 301 and ratchet body 302 fixed, can prevent ratchet body 302 from rotating, can flexibly adjust the angle between ratchet body 302 and force arm body 102, can be applicable to the working situation of screw disassembly and assembly under different angles, when the shape of the screw that needs to be disassembled and assembled is not matched with the inner wall shape of ratchet body 302, the rotation of the push screw 308 drives the extrusion cone 309 to move, at this time, the extrusion block 306 is not extruded by the extrusion cone 309, spring three 307 drives the extrusion block 306 to move back and away from the fixed block 303, at this time, the fixed block 303 is not extruded by the extrusion block 306, the tension of spring two 305 will drive the fixed block 303 to move back and move out from the fixed slot 304, can lose the fixing of ratchet body 302, can replace different ratchet body 302 according to the shape of the screw that needs to be disassembled and assembled, the range of use is more extensive, improve practicality.

[0027] It is obvious to a person skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0028] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.

Claims

1. A ratchet wrench with an adjustable lever arm, comprising a lever arm assembly (100) and a changeover assembly (300), characterized in that: The lever arm assembly (100) includes an inner guide block (101) and a lever arm body (102). The lever arm body (102) is slidably sleeved on the outside of the inner guide block (101). An anti-slip sleeve (103) is provided on the outer wall of the lever arm body (102). A cavity (104) is provided inside the lever arm body (102), and a slider (105) is slidably connected inside the cavity (104). An insert (106) is fixedly provided on the outer wall of the slider (105). Several slots (107) are opened on the inner wall of the inner guide block (101), and the insert (106) is inserted into the inside of the slots (107). The inner wall of the cavity (104) is... A guide rod (108) is provided, and a slider (105) is slidably sleeved on the outside of the guide rod (108). A spring (109) connected to the slider (105) is provided on the inner wall of the cavity (104). A push block (110) at the top of the extension lever body (102) is provided on the outer wall of the top of the slider (105). A rotating assembly (200) is provided at one end of the inner guide block (101). The rotating assembly (200) includes a rotating seat (201) and a rotating block (202). The rotating seat (201) is fixedly provided at one end of the inner guide block (101), and the rotating block (202) is rotatably connected to the inside of the rotating seat (201).

2. A ratchet wrench with adjustable lever arm according to claim 1, characterized in that: A rotating rod (203) is fixedly installed on the inner wall of the rotating block (202), and the rotating rod (203) is rotatably connected to the inside of the rotating seat (201) through a bearing. A knob (206) is provided at one end of the rotating rod (203) located outside the rotating seat (201).

3. A ratchet wrench with adjustable lever arm according to claim 2, characterized in that: The rotating seat (201) has an internal movable cavity (204), and the rotating rod (203) is provided with a gear (205) on the outer wall inside the movable cavity (204).

4. A ratchet wrench with adjustable lever arm according to claim 3, characterized in that: The movable cavity (204) is slidably connected to a lifting plate (207), and teeth (208) are provided on the outer wall of the bottom of the lifting plate (207), which mesh with the gear (205).

5. A ratchet wrench with adjustable lever arm according to claim 4, characterized in that: A limit rod (210) is provided on the inner wall of the active cavity (204), and the lifting plate (207) is slidably sleeved on the outside of the limit rod (210). A compression screw (209) is threaded into the outer wall of the top of the rotating seat (201), and the bottom end of the compression screw (209) is rotatably connected to the lifting plate (207) through a bearing.

6. A ratchet wrench with adjustable lever arm according to claim 1, characterized in that: The replacement component (300) includes a fixed seat (301) and a ratchet body (302). The fixed seat (301) is fixedly disposed on the outer wall of the rotating block (202), and the ratchet body (302) is inserted into the fixed seat (301).

7. A ratchet wrench with adjustable lever arm according to claim 6, characterized in that: The fixed seat (301) is slidably connected to a fixed block (303), and a fixed groove (304) is provided on the outer wall of both sides of the ratchet body (302). The fixed block (303) is inserted into the fixed groove (304), and a spring (305) connected to the fixed block (303) is provided on the inner wall of the fixed seat (301).

8. A ratchet wrench with adjustable lever arm according to claim 7, characterized in that: The fixed seat (301) is slidably connected to the inside of the pressing block (306), and the fixed seat (301) is provided with a spring three (307) connected to the pressing block (306). A push screw (308) is threaded into the outer wall of one side of the fixed seat (301), and a pressing cone (309) is provided at one end of the push screw (308) inside the fixed seat (301).

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