Labor-saving wrench

Abstract

The utility model belongs to the technical field of wrenches, and particularly relates to a labor-saving wrench which comprises a fixed seat, a fixed jaw and a movable jaw are oppositely arranged at the top end of the fixed seat, the bottom end of the fixed jaw is fixedly connected with the fixed seat, the movable jaw is connected to the fixed seat in a sliding mode, a lead screw is rotationally arranged on the fixed seat in the horizontal direction, and a sliding block is connected to the lead screw in a threaded mode. The sliding block is in transmission fit with the movable jaw and used for adjusting the distance between the movable jaw and the fixed jaw, a rotating rod is rotationally arranged in the fixed base in the vertical direction, the top end of the rotating rod is fixedly sleeved with a second bevel gear, the end, close to the fixed jaw, of the lead screw is fixedly sleeved with a first bevel gear, and the second bevel gear is meshed with the first bevel gear. A telescopic handle is rotationally arranged at the bottom end of the fixing base and fixedly connected with the bottom end of the lead screw. The utility model has the characteristics of laborsaving and convenient adjustment.

Description

Technical Field

[0001] The utility model belongs to the technical field of wrenches, and in particular relates to a labor-saving wrench. Background Art

[0002] A wrench is a commonly used installation and disassembly tool. It is a hand tool that uses the principle of leverage to turn bolts, screws, nuts and other threaded fasteners such as the opening or hole of a bolt or nut.

[0003] The manual wrench, also known as the ordinary wrench, is more commonly used at present. It mainly includes a handle, a fixed jaw and a movable jaw. It is mainly used in ordinary life and work. It is relatively simple to use. It is mainly divided into single-headed fixed wrench, double-headed fixed wrench, adjustable wrench and plum blossom wrench. When using the manual wrench, select the corresponding wrench according to the characteristics of the fastener to be tightened. Hold the end of the wrench handle with your hand, tighten it clockwise, and rotate it counterclockwise to loosen it.

[0004] However, when adjusting the movable jaw of the existing wrench, the worm on the handle is generally adjusted by rotating the thumb. Repeated adjustments are time-consuming and laborious, and the thumb is easily worn and injured.

[0005] Therefore, in order to solve this problem, it is necessary to develop and design a labor-saving wrench to solve the labor-consuming problem of the existing wrench. Utility Model Content

[0006] The utility model aims to provide a labor-saving wrench to solve the problems existing in the above-mentioned prior art.

[0007] To achieve the above-mentioned purpose, the utility model provides a labor-saving wrench, comprising a fixed seat, the top of the fixed seat is relatively provided with a fixed jaw and a movable jaw, the bottom of the fixed jaw is fixedly connected to the fixed seat, and the movable jaw is slidably connected to the fixed seat, and the fixed seat is provided with a screw rod for rotation in a horizontal direction, and a slider is threadedly connected to the screw rod, the slider is transmission-matched with the movable jaw, and the slider is used to adjust the distance between the movable jaw and the fixed jaw, and a rotating rod is provided in the fixed seat for rotation in a vertical direction, and a top fixed sleeve of the rotating rod is provided with a bevel gear 2, and a fixed sleeve on an end of the screw rod close to the fixed jaw is provided with a bevel gear 1, and the bevel gear 2 is meshed with the bevel gear 1, and a telescopic handle is rotatably provided at the bottom end of the fixed seat, and the bottom end of the screw rod is fixedly connected to the telescopic handle.

[0008] Preferably, a sliding groove is provided at the top of the fixed seat, and the sliding groove passes through the side of the fixed seat away from the fixed jaw, a movable seat is slidably connected in the sliding groove, the bottom end of the movable jaw is fixedly connected to the top of the movable seat, and the bottom end of the movable seat is fixedly connected to the top of the slider.

[0009] Preferably, the fixed seat is provided with a groove, the groove is arranged parallel to the slide slot, and the groove is communicated with the slide slot, the screw rod is rotatably connected to the two opposite side walls of the groove, the fixed seat is provided with a through hole one in the vertical direction, the through hole one is communicated with the groove, the bottom end of the fixed seat is fixedly connected with a fixed circular tube, both ends of the inner wall of the fixed circular tube are interference fit with bearings, the rotating rod is rotatably connected to the fixed circular tube through the bearing, and the top end of the rotating rod passes through the hole one and extends into the groove.

[0010] Preferably, the telescopic handle includes a connector fixedly connected to the bottom end of the rotating rod, an annular groove 1 is provided at the bottom end of the fixed circular tube, and the connector is slidably limited with the fixed circular tube through the annular groove 1, and a guide groove and a plurality of semi-annular grooves are provided on the side wall of the connector in the vertical direction, and the plurality of semi-annular grooves are connected through the guide groove, and the width of the guide groove is not less than the width of the semi-annular groove, an extension rod is provided on the connector, a blind hole 2 is provided in the middle part of the top end of the connector, and the depth of the blind hole 2 is not less than the length of the connector, the connector is slidably sleeved on the connector through the blind hole 2, a limiting piece is fixedly provided on the upper end of the side wall of the blind hole 2, and the extension rod is limitedly limited with the connector through the limiting piece.

[0011] Preferably, the limiting member includes a round tube fixedly connected to the upper end of the side wall of the second blind hole, a round ball is slidably connected to the round tube, a spring is arranged in the round tube, the spring is located between the round ball and the side wall of the second blind hole, both ends of the spring are respectively fixedly connected to the round tube and the side wall of the second blind hole, the round tube is adapted to the semi-annular groove, and the round ball abuts against the bottom wall of the semi-annular groove and the guide groove.

[0012] Preferably, the fixed jaw and two opposite sides of the fixed jaw are fixedly connected with a plurality of anti-slip teeth.

[0013] Preferably, a ball head is fixedly connected to the bottom end of the extension rod.

[0014] Preferably, a scale line is engraved on the top of the fixing seat, and the scale line is arranged corresponding to the movable jaw.

[0015] Compared with the prior art, the utility model has the following advantages and technical effects:

[0016] The utility model provides a labor-saving wrench. The telescopic handle is rotated to drive the rotating rod to rotate. The rotation of the rotating rod drives the second bevel gear to rotate. The meshing transmission of the second bevel gear and the first bevel gear drives the screw rod to rotate. The screw rod drives the slider and the movable jaw to move, thereby adjusting the distance between the movable jaw and the fixed jaw, thereby facilitating the adaptation of fasteners of different specifications.

[0017] The telescopic handle can be flexibly adjusted according to the size of the working space, thereby expanding the scope of use.

[0018] The utility model has the characteristics of labor saving and convenient adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor:

[0020] Figure 1 A cutaway diagram of a labor-saving wrench proposed by the utility model;

[0021] Figure 2 This is a structural schematic diagram of a labor-saving wrench proposed by the utility model;

[0022] Figure 3 for Figure 1 A partial enlarged view of the middle A;

[0023] Figure 4 It is a structural schematic diagram of the connector in the utility model;

[0024] Among them: 1. Fixed seat; 2. Fixed jaw; 3. Movable jaw; 4. Anti-slip teeth; 5. Slide groove; 6. Movable seat; 7. Slider; 8. Screw; 9. Bevel gear 1; 10. Groove; 11. Through hole 1; 12. Bevel gear 2; 13. Bearing; 14. Annular groove 1; 15. Fixed round tube; 16. Connector; 17. Blind hole 2; 18. Extension rod; 19. Ball head; 20. Semi-annular groove; 21. Round tube; 22. Rotating rod; 23. Spring; 24. Ball; 25. Guide groove; 26. Magnet block; 27. Scale line. DETAILED DESCRIPTION

[0025] 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.

[0026] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] Reference Figures 1 to 4 As shown, the utility model provides a labor-saving wrench, including a fixed seat 1, a fixed jaw 2 and a movable jaw 3 are relatively arranged on the top of the fixed seat 1, the bottom end of the fixed jaw 2 is fixedly connected to the fixed seat 1, and the movable jaw 3 is slidably connected to the fixed seat 1, and the fixed seat 1 is provided with a screw rod 8 for rotation in the horizontal direction, and a slider 7 is threadedly connected to the screw rod 8, the slider 7 is transmission-matched with the movable jaw 3, and the slider 7 is used to adjust the distance between the movable jaw 3 and the fixed jaw 2, and a rotating rod 22 is rotatably arranged in the fixed seat 1 along the vertical direction, and a bevel gear 2 12 is fixedly provided on the top of the rotating rod 22, and a bevel gear 1 9 is fixedly provided on the end of the screw rod 8 close to the fixed jaw 2, and the bevel gear 12 is meshed with the bevel gear 1 9, and a telescopic handle is rotatably arranged on the bottom end of the fixed seat 1, and the bottom end of the screw rod 8 is fixedly connected to the telescopic handle.

[0028] By rotating the telescopic handle, the telescopic handle drives the rotating rod 22 to rotate, and the rotation of the rotating rod 22 drives the bevel gear 2 12 to rotate. The bevel gear 2 12 is meshed with the bevel gear 1 9 to drive the screw rod 8 to rotate, and the screw rod 8 drives the slider 7 and the movable jaw 3 to move, thereby adjusting the distance between the movable jaw 3 and the fixed jaw 2, thereby facilitating the adaptation of fasteners of different specifications.

[0029] The telescopic handle can be flexibly adjusted according to the size of the working space, thereby expanding the scope of use.

[0030] The utility model has the characteristics of labor saving and convenient adjustment.

[0031] Furthermore, a slide groove 5 is opened at the top of the fixed seat 1, and the slide groove 5 passes through the side of the fixed seat 1 away from the fixed jaw 2. A movable seat 6 is slidably connected in the slide groove 5. The bottom end of the movable jaw 3 is fixedly connected to the top of the movable seat 6, and the bottom end of the movable seat 6 is fixedly connected to the top of the slider 7.

[0032] The sliding groove 5 is provided to ensure the stable sliding direction of the movable seat 6 and has a limiting effect on the movable seat 6, so that the slider 7 can move horizontally when the thread is screwed on the screw rod 8.

[0033] Furthermore, the fixed seat 1 is provided with a groove 10, which is arranged parallel to the slide groove 5 and is communicated with the slide groove 5. The screw rod 8 is rotatably connected to the opposite side walls of the groove 10. The fixed seat 1 is provided with a through hole 11 in the vertical direction, which is communicated with the groove 10. The bottom end of the fixed seat 1 is fixedly connected with a fixed circular tube 15, and both ends of the inner wall of the fixed circular tube 15 are interference fit with bearings 13. The rotating rod 22 is rotatably connected to the fixed circular tube 15 through the bearing 13, and the top end of the rotating rod 22 passes through the through hole 11 and extends into the groove 10.

[0034] The bearing 13 is provided to reduce the frictional resistance of the rotating rod 22, so that the rotating telescopic handle is more labor-saving.

[0035] Furthermore, the telescopic handle includes a connector 16 fixedly connected to the bottom end of the rotating rod 22, an annular groove 14 is provided at the bottom end of the fixed circular tube 15, the connector 16 is slidably limited with the fixed circular tube 15 through the annular groove 14, a guide groove 25 and a plurality of semi-annular grooves 20 are provided on the side wall of the connector 16 in the vertical direction, the plurality of semi-annular grooves 20 are connected through the guide groove 25, and the width of the guide groove 25 is not less than the width of the semi-annular groove 20, an extension rod 18 is provided on the connector 16, a blind hole 17 is provided in the middle of the top end of the connector 16, the depth of the blind hole 17 is not less than the length of the connector 16, the connector 16 is slidably sleeved on the connector 16 through the blind hole 17, a limiting piece is fixedly provided on the upper end of the side wall of the blind hole 17, and the extension rod 18 is limitedly limited with the connector 16 through the limiting piece.

[0036] Furthermore, the limiting member includes a circular tube 21 fixedly connected to the upper end of the side wall of the second blind hole 17, a round ball 24 is slidably connected inside the circular tube 21, a spring 23 is arranged inside the circular tube 21, the spring 23 is located between the round ball 24 and the side wall of the second blind hole 17, both ends of the spring 23 are respectively fixedly connected to the circular tube 21 and the side wall of the second blind hole 17, the circular tube 21 is adapted to the semi-annular groove 20, and the round ball 24 abuts against the bottom wall of the semi-annular groove 20 and the guide groove 25.

[0037] By rotating the extension rod 18, the round tube 21 on the extension rod 18 moves along the semi-annular groove 20 and rotates into the guide groove 25. At this time, the extension rod 18 is pulled to move along the guide groove 25. When it is adjusted to an appropriate length, the extension rod 18 is rotated again to make the round tube 21 slide into another semi-annular groove 20. At this time, the ball 24 is squeezed by the bottom wall of the semi-annular groove 20 and moves toward the side wall of the blind hole 17, and compresses the spring 23, so that the round tube 21 is clamped in the semi-annular groove 20 to achieve locking. It should be noted that when the movable jaw 3 needs to be adjusted, the round tube 21 moves to the end of the semi-annular groove 20 and achieves limiting.

[0038] Furthermore, in order to improve the clamping stability with the fastener, a plurality of anti-slip teeth 4 are fixedly connected to the fixed jaw 2 and the two opposite sides of the fixed jaw 2 .

[0039] Furthermore, in order to prevent the arm from sliding out, a ball head 19 is fixedly connected to the bottom end of the extension rod 18 .

[0040] Furthermore, in order to facilitate determination of the moving distance of the movable jaw 3 , a scale line 27 is engraved on the top of the fixing seat 1 , and the scale line 27 is arranged corresponding to the movable jaw 3 .

[0041] Furthermore, in order to prevent the fastener from sliding off the wrench, 26 magnet blocks are fixedly arranged on the fixed jaw 2 and the movable jaw 3.

[0042] The labor-saving wrench provided by the utility model has a working principle as follows: when in use, the distance between the movable jaw 3 and the fixed jaw 2 is adjusted by rotating the extension rod 18 according to the size of the fastener and with the assistance of the scale line 27. When the handle length needs to be adjusted, it is only necessary to continue to rotate the extension rod 18 so that the round tube 21 on the extension rod 18 moves along the semi-annular groove 20 and rotates into the guide groove 25. At this time, the extension rod 18 is pulled to move along the guide groove 25. When it is adjusted to a suitable length, the extension rod 18 is rotated again so that the round tube 21 slides into another semi-annular groove 20. At this time, the ball 24 is squeezed by the bottom wall of the semi-annular groove 20 and moves toward the side wall of the second blind hole 17, and the spring 23 is compressed so that the round tube 21 is clamped in the semi-annular groove 20 to achieve locking.

[0043] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] The above are only preferred specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed in the present application should be covered within the protection scope of the present application.

Claims

1. A labor-saving wrench, characterized in that: The invention comprises a fixed seat (1), a fixed jaw (2) and a movable jaw (3) are arranged on the top of the fixed seat (1) in a relative manner, the bottom end of the fixed jaw (2) is fixedly connected to the fixed seat (1), the movable jaw (3) is slidably connected to the fixed seat (1), the fixed seat (1) is provided with a screw rod (8) for rotating in the horizontal direction, a slider (7) is threadedly connected to the screw rod (8), the slider (7) is in transmission cooperation with the movable jaw (3), and the slider (7) is used to adjust the movable jaw (3) and the fixed jaw (2), a rotating rod (22) is rotatably arranged in the fixed seat (1) along the vertical direction, a top fixed sleeve of the rotating rod (22) is provided with a bevel gear 2 (12), a fixed sleeve of an end of the screw rod (8) close to the fixed jaw (2) is provided with a bevel gear 1 (9), the bevel gear 2 (12) is meshed with the bevel gear 1 (9), a telescopic handle is rotatably arranged at the bottom end of the fixed seat (1), and the bottom end of the screw rod (8) is fixedly connected to the telescopic handle.

2. The labor-saving wrench according to claim 1, characterized in that: A slide groove (5) is provided at the top of the fixed seat (1), and the slide groove (5) passes through a side of the fixed seat (1) away from the fixed jaw (2); a movable seat (6) is slidably connected in the slide groove (5); the bottom end of the movable jaw (3) is fixedly connected to the top of the movable seat (6), and the bottom end of the movable seat (6) is fixedly connected to the top of the sliding block (7).

3. The labor-saving wrench according to claim 2, characterized in that: The fixing seat (1) is provided with a groove (10), the groove (10) is arranged parallel to the slide groove (5), and the groove (10) is communicated with the slide groove (5), the screw rod (8) is rotatably connected to the two opposite side walls of the groove (10), the fixing seat (1) is provided with a through hole (11) in the vertical direction, the through hole (11) is communicated with the groove (10), the bottom end of the fixing seat (1) is fixedly connected with a fixed circular tube (15), both ends of the inner wall of the fixed circular tube (15) are interference fit with bearings (13), the rotating rod (22) is rotatably connected to the fixed circular tube (15) through the bearing (13), and the top end of the rotating rod (22) passes through the hole (11) and extends into the groove (10).

4. The labor-saving wrench according to claim 3, characterized in that: The telescopic handle comprises a connecting body (16) fixedly connected to the bottom end of the rotating rod (22); an annular groove (14) is provided at the bottom end of the fixed circular tube (15); the connecting body (16) is slidably limitedly matched with the fixed circular tube (15) through the annular groove (14); a guide groove (25) and a plurality of semi-annular grooves (20) are provided on the side wall of the connecting body (16) in the vertical direction; the plurality of semi-annular grooves (20) are connected through the guide groove (25); and the width of the guide groove (25) is not less than 1 / 4 of the guide groove (25). The width of the semi-annular groove (20) is smaller than that of the semi-annular groove (20); an extension rod (18) is arranged on the connector (16); a second blind hole (17) is opened in the middle of the top of the connector (16); the depth of the second blind hole (17) is not less than the length of the connector (16); the connector (16) is slidably mounted on the connector (16) through the second blind hole (17); a limiting member is fixedly arranged on the upper end of the side wall of the second blind hole (17); and the extension rod (18) is limitedly matched with the connector (16) through the limiting member.

5. The labor-saving wrench according to claim 4, characterized in that: The limiting member comprises a circular tube (21) fixedly connected to the upper end of the side wall of the second blind hole (17); a round ball (24) is slidably connected inside the circular tube (21); a spring (23) is arranged inside the circular tube (21); the spring (23) is located between the round ball (24) and the side wall of the second blind hole (17); two ends of the spring (23) are respectively fixedly connected to the circular tube (21) and the side wall of the second blind hole (17); the circular tube (21) is adapted to the semi-annular groove (20); the round ball (24) abuts against the bottom wall of the semi-annular groove (20) and the guide groove (25).

6. The labor-saving wrench according to claim 1, characterized in that: The fixed jaw (2) and the two opposite sides of the fixed jaw (2) are fixedly connected with a plurality of anti-slip teeth (4).

7. The labor-saving wrench according to claim 4, characterized in that: The bottom end of the extension rod (18) is fixedly connected with a ball head (19).

8. The labor-saving wrench according to claim 1, characterized in that: A scale line (27) is engraved on the top of the fixing seat (1), and the scale line (27) is arranged corresponding to the movable jaw (3).

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