A spanner

Abstract

The utility model provides a kind of movable spanner, belong to movable spanner technical field, solve the problem that foreign matter can enter into through slot in prior art, and the problem that it is clamped between through slot inner wall and vortex rod, influence vortex rod normal rotation.It includes handle, fixedly arranged with fixed jaw on the handle, slidingly arranged with movable jaw on fixed jaw, characterized by, installation slot is opened in the fixed jaw, worm for driving movable jaw to move is rotatably arranged in installation slot, rotation shaft of worm is fixedly connected with rotation rod that rotationally penetrates out fixed jaw, protective cover is detachably connected on installation slot.Protective cover is set on the installation slot of worm, prevent foreign matter from entering into installation slot and affecting the rotation of worm, and worm rotates by rotation rod that rotationally penetrates out fixed jaw, ensure normal use of movable spanner.

Description

Technical Field

[0001] This utility model belongs to the technical field of adjustable wrenches, specifically to an adjustable wrench. Background Technology

[0002] An adjustable wrench is a hand tool whose opening width can be adjusted within a certain range. It is mainly used to tighten or loosen nuts and bolts of different sizes.

[0003] An adjustable wrench mainly consists of a head and a handle. The head has a fixed jaw and a movable jaw. A worm gear is rotatably mounted in the head. The worm gear, in conjunction with the drive teeth on the movable jaw, drives the movable jaw to move laterally, thereby adjusting the opening width. Existing adjustable wrenches have the worm gear housed in a through groove in the head for easy rotation. However, foreign objects can enter the through groove and become stuck between the groove wall and the worm gear, affecting its normal rotation and thus the use of the adjustable wrench. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide an adjustable wrench with a protective cover on the mounting groove for the worm gear to prevent foreign objects from entering the mounting groove and affecting the rotation of the worm gear. The worm gear rotates by rotating a rotating rod that passes through the fixed jaws, ensuring the normal use of the adjustable wrench.

[0005] The technical solution adopted in this utility model is as follows: An adjustable wrench includes a handle, a fixed jaw fixedly disposed on the handle, and a movable jaw slidably disposed on the fixed jaw. The fixed jaw has a mounting groove, and a worm gear for driving the movable jaw to move is rotatably disposed in the mounting groove. A rotating rod that rotatably passes through the fixed jaw is fixedly connected to the axis of the worm gear. A protective cover is detachably connected to the mounting groove.

[0006] Preferably, the rotating rod is provided with a thread located outside the fixed jaw, and a threaded sleeve is connected to the rotating rod via the thread.

[0007] Preferably, a fixing seat that mates with a threaded sleeve is fixedly connected to the outer side of the fixing jaws.

[0008] Preferably, the handle is provided with four grooves.

[0009] Preferably, the groove is provided with an anti-slip pad.

[0010] Preferably, a limiting groove is provided laterally in the fixed jaw, and a movable rod that is fixedly connected to the movable jaw is slidably arranged in the limiting groove. Several drive teeth that mesh with the worm gear are arranged at equal intervals at the bottom of the movable rod.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: A protective cover is installed on the mounting slot of the worm gear to prevent foreign objects from entering the mounting slot and affecting the rotation of the worm gear. The worm gear rotates by rotating a rotating rod that passes through the fixed jaws, ensuring the normal use of the adjustable wrench. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the main structure provided for an embodiment of the present utility model; Figure 2 This is a cross-sectional structural diagram provided for an embodiment of the present utility model.

[0014] Reference numerals: 1-Handle; 2-Moving jaws; 3-Fixed jaws; 4-Groove; 5-Anti-slip pad; 6-Protective cover; 7-Threaded sleeve; 8-Rotating rod; 9-Thread; 10-Fixed seat; 11-Moving rod; 12-Limiting groove; 13-Drive gear; 14-Worm gear; 15-Mounting slot. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0017] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they 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.

[0018] The following is combined with Figure 1 and Figure 2 This utility model will be described in detail.

[0019] Example An adjustable wrench includes a handle 1, a fixed jaw 3 fixedly disposed on the handle 1, and a movable jaw 2 slidably disposed on the fixed jaw 3. The fixed jaw 3 has a mounting groove 15, and a worm gear 14 for driving the movable jaw 2 is rotatably disposed in the mounting groove 15. A rotating rod 8, which rotatably passes through the fixed jaw 3, is fixedly connected to the axis of the worm gear 14. A protective cover 6 is detachably connected to the mounting groove 15.

[0020] A protective cover 6 is provided on the mounting groove 15 for mounting the worm gear 14 to prevent foreign objects from entering the mounting groove 15 and affecting the rotation of the worm gear. The worm gear 14 rotates by rotating the rotating rod 8 that passes through the fixed jaw 3, ensuring the normal use of the adjustable wrench.

[0021] The protective cover 6 can be installed on the fixing jaw 3 by screw connection or snap-fit, thereby sealing the mounting groove 15. The mounting groove 15 can be a through groove or a recess. When the mounting groove 15 is a through groove, the protective cover 6 needs to be installed on both the front and back. When the mounting groove 15 is a recess, the protective cover 6 only needs to be installed on the opening side of the recess.

[0022] The rotating rod 8 is provided with a thread 9 located outside the fixed jaw 3, and a threaded sleeve 7 is connected to the rotating rod 8 through the thread 9. After the position of the movable jaw 2 is adjusted, that is, after the opening width of the adjustable wrench is adjusted, the rotating threaded sleeve 7 can be pressed against the outer wall of the fixed jaw 3 through the thread 9, thereby limiting the rotation of the rotating rod 8 through friction, ensuring the accurate size of the opening width, and preventing the movable jaw 2 and the worm gear 14 from axially loosening and causing changes in the size of the opening width.

[0023] A fixing seat 10 that mates with the threaded sleeve 7 is fixedly connected to the outer side of the fixing jaw 3. Since the outer side of the fixing jaw 3 has an arc-shaped structure, the friction force after the threaded sleeve 7 abuts is small. Therefore, a fixing seat 10 is provided. After the threaded sleeve 7 abuts against the fixing seat 10, the end face of the threaded sleeve 7 can be completely fitted with the end face of the fixing seat 10, thereby increasing the friction force. Furthermore, an anti-slip rubber pad or other anti-slip structure can be provided on the end face of the fixing seat 10.

[0024] A drive block is provided at the end of the rotating rod 8. The drive block is circular, making it easy to rotate the rotating rod 8 by turning the drive block. Both the threaded sleeve 7 and the drive block are provided with knurling to increase friction and facilitate rotation.

[0025] The handle 1 has four grooves 4. The four grooves 4 make it easy for the operator's fingers to grip.

[0026] An anti-slip pad 5 is provided in the groove 4. The anti-slip pad 5 can increase the friction for gripping and prevent the hand from slipping.

[0027] A limiting groove 12 is laterally formed in the fixed jaw 3. A movable rod 11, which is fixedly connected to the movable jaw 2, is slidably disposed in the limiting groove 12. Several drive teeth 13, which mesh with a worm gear 14, are evenly spaced at the bottom of the movable rod 11. Rotating the worm gear 14 in conjunction with the drive teeth 13 can drive the movable jaw 2 to move left and right, thereby adjusting the opening width. The limiting groove 12 is gourd-shaped, meaning it is wider at the bottom and narrower at the top. The movable rod 11 also has a structure that is wider at the bottom and narrower at the top, so that the movable rod 11 can only slide left and right within the limiting groove 12 and will not move upward out of the limiting groove 12.

[0028] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An adjustable wrench, comprising a handle (1), wherein a fixed jaw (3) is fixedly disposed on the handle (1), and a movable jaw (2) is slidably disposed on the fixed jaw (3), characterized in that, The fixed jaw (3) has an installation groove (15), and a worm (14) for driving the movable jaw (2) to move is rotatably installed in the installation groove (15). A rotating rod (8) that rotatably passes through the fixed jaw (3) is fixedly connected at the axis of the worm (14). A protective cover (6) is detachably connected to the installation groove (15).

2. The adjustable wrench according to claim 1, characterized in that, The rotating rod (8) is provided with a thread (9) located outside the fixed jaw (3), and a screw sleeve (7) is connected to the rotating rod (8) through the thread (9).

3. An adjustable wrench according to claim 2, characterized in that, The outer side of the fixed jaw (3) is fixedly connected to a fixed seat (10) that mates with the screw sleeve (7).

4. An adjustable wrench according to claim 1, characterized in that, The handle (1) is provided with four grooves (4).

5. An adjustable wrench according to claim 4, characterized in that, An anti-slip pad (5) is provided in the groove (4).

6. An adjustable wrench according to claim 1, characterized in that, The fixed jaw (3) has a limiting groove (12) opened laterally. A movable rod (11) fixedly connected to the movable jaw (2) is slidably arranged in the limiting groove (12). Several drive teeth (13) that mesh with the worm gear (14) are arranged at equal intervals at the bottom of the movable rod (11).

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