Adjustable wrench with extension structure

Abstract

The utility model discloses an adjustable spanner with an extension structure, which comprises a handle, a fixed spanner head, an adjustable spanner head and a transmission worm, the fixed spanner head is arranged at one end of the handle, the adjustable spanner head is arranged on the inner side of the fixed spanner head, the transmission worm is embedded in the handle close to the adjustable spanner head, and the transmission worm is arranged on the inner side of the fixed spanner head. The movable wrench head is driven to move by rotating the transmission worm, and teeth are arranged on the inner wall of the fixed wrench head and the inner wall of the movable wrench head. According to the adjustable spanner with the extension structure, the connecting sleeve which can be pulled outwards and limited is arranged on the outer side of the handle, the grabbing length of a worker to the adjustable spanner can be prolonged, the adjustable spanner can be used under different conditions, and therefore the adjustable spanner is provided with the extension structure and is wide in application range; the shielding plate capable of moving and automatically resetting is arranged on the outer side of the transmission worm, so that the transmission worm can be shielded, foreign matters are prevented from entering the transmission worm to influence normal use, and the adjustable spanner is provided with a protection structure.

Description

Technical Field

[0001] The utility model relates to the technical field of adjustable wrenches, in particular to an adjustable wrench with an extended structure. Background Art

[0002] An adjustable wrench is a common, convenient and practical hand tool used to tighten or loosen nuts, bolts and other fasteners. An adjustable wrench is highly flexible, multifunctional and portable. Therefore, an adjustable wrench is widely used in threaded connection work in various fields. The characteristic of an adjustable wrench is that the head can rotate flexibly, so that the adjustable wrench can be easily tightened or loosened even in a narrow space or with angle restrictions.

[0003] When using the adjustable wrenches currently on the market, the user holds the handle and rotates it to loosen and tighten the connecting piece. The length of the handle of the existing adjustable wrench is generally fixed, and the length of the handle of the adjustable wrench cannot be extended and adjusted according to actual use needs, and the scope of use is small. Therefore, we propose an adjustable wrench with an extended structure. Utility Model Content

[0004] The purpose of the utility model is to provide an adjustable wrench with an extended structure to solve the problems raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adjustable wrench with an extended structure, comprising a handle, a fixed wrench head, a movable wrench head and a transmission worm, wherein a fixed wrench head is arranged at one end of the handle, and a movable wrench head is arranged on the inner side of the fixed wrench head, a transmission worm is embedded and installed inside the handle near the movable wrench head, and the movable wrench head is moved by rotating the transmission worm, and the inner walls of the fixed wrench head and the movable wrench head are both provided with teeth.

[0006] Preferably, an extension component is provided inside the handle, and the extension component includes a movable groove, a docking block, a limit groove, a guide rod, a connecting sleeve, an installation groove, a mounting plate, a limit rod, a first spring, an outer plate, a first limit seat and a second limit seat. The movable groove is opened on the surface of the handle, and a docking block is inserted into the movable groove.

[0007] Preferably, a limiting groove is provided on one side of the docking block, and a guide rod passes through the middle of the docking block, both ends of the guide rod are connected to the inner wall of the movable groove, and a connecting sleeve is provided on the outer side of the handle.

[0008] Preferably, the inner wall of the connecting sleeve is connected to the outer end of the docking block, a mounting groove is provided inside one side of the connecting sleeve, and a mounting plate passes through the inside of the mounting groove.

[0009] Preferably, a limiting rod connected to the mounting plate passes through the outer side of the connecting sleeve, and a first spring is sleeved on the outer side of the limiting rod, and one end of the first spring is connected to the inner wall of the mounting groove.

[0010] Preferably, the other end of the first spring is connected to the mounting plate, the outer end of the limiting rod is connected to the outer plate, and the two ends of the inner wall of the outer plate are respectively connected to the first limiting seat and the second limiting seat.

[0011] Preferably, the first limit seat and the second limit seat are inserted into the handle through the connecting sleeve, and the two ends of the mounting plate are respectively connected to the first limit seat and the second limit seat.

[0012] Preferably, a fixing seat is provided on the outer side of the handle close to the transmission worm, and a movable groove is provided inside the fixing seat, and a shielding plate is provided on the outer wall of the transmission worm.

[0013] Preferably, a movable block is connected to one side of the shielding plate, and the movable block is inserted into the movable groove, and a connecting rod passes through the middle of the movable block.

[0014] Preferably, a second spring is sleeved on the outer side of the connecting rod, one end of the second spring is connected to the movable groove, and the other end of the second spring is connected to the movable block.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: the adjustable wrench with an extended structure can extend the gripping length of the adjustable wrench by the staff by arranging a connecting sleeve that can be pulled outward and limited on the outside of the handle, so as to meet the use in different situations, so that the adjustable wrench has an extended structure and has a wider range of applications. By arranging a movable and automatically reset baffle plate on the outside of the transmission worm, the transmission worm can be shielded to prevent foreign objects from entering the interior of the transmission worm and affecting normal use, so that the adjustable wrench has a protective structure.

[0016] 1. The adjustable wrench with an extended structure drives the connected first limit seat, the second limit seat, the mounting plate and the limit rod to move outward to the limit position synchronously by pulling the outer plate outward. At this time, the connecting sleeve is pulled outward to the limit position, and the pulled outer plate is loosened immediately. The loosened outer plate and the mounting plate can be automatically reset inward by the elastic force of the first spring and inserted into the upper limit groove of the docking block, so as to limit the extended connecting sleeve. By arranging the connecting sleeve that can be pulled outward and limited on the outer side of the handle, the grip length of the adjustable wrench by the staff can be extended to meet the use in different situations, so that the adjustable wrench has an extended structure and has a wide range of applications.

[0017] 2. For the adjustable wrench with an extended structure, the user pushes the shielding plate from one side of the shielding plate to the other side with the finger that rotates the transmission worm until the user's finger can completely contact the transmission worm to rotate it. At this time, one side of the user's finger is still in contact with and in contact with the side of the shielding plate. After rotating the transmission worm to adjust the movable wrench head to the required position for normal use, the finger can be separated from the transmission worm. At this time, the shielding plate can automatically reset outward by the elastic force of the second spring. By arranging a movable and automatically reset shielding plate on the outside of the transmission worm, the transmission worm can be shielded to prevent foreign objects from entering the inside of the transmission worm and affecting normal use, thereby making the adjustable wrench have a protective structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the main cutaway structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the cutaway structure of the extension assembly of the utility model from the right side;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the handle of the utility model when viewed from above.

[0022] In the figure: 1. handle; 2. fixed spanner; 3. movable spanner; 4. driving worm; 5. teeth; 6. extension assembly; 601. movable groove; 602. docking block; 603. limit groove; 604. guide rod; 605. connecting sleeve; 606. mounting groove; 607. mounting plate; 608. limit rod; 609. first spring; 610. outer plate; 611. first limit seat; 612. second limit seat; 7. fixed seat; 8. movable groove; 9. shielding plate; 10. movable block; 11. connecting rod; 12. second spring. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1 , Figure 2 , Figure 3 and Figure 4The utility model provides a technical solution: an adjustable wrench with an extended structure, comprising a handle 1, a fixed wrench head 2, an movable wrench head 3 and a transmission worm 4, one end of the handle 1 is provided with a fixed wrench head 2, and the inner side of the fixed wrench head 2 is provided with the movable wrench head 3, the inner part of the handle 1 near the movable wrench head 3 is inlaid with a transmission worm 4, the movable wrench head 3 is moved by rotating the transmission worm 4, and the inner walls of the fixed wrench head 2 and the movable wrench head 3 are both provided with teeth 5.

[0025] An extension component 6 is provided inside the handle 1, and the extension component 6 includes a moving groove 601, a docking block 602, a limiting groove 603, a guide rod 604, a connecting sleeve 605, a mounting groove 606, a mounting plate 607, a limiting rod 608, a first spring 609, an outer plate 610, a first limiting seat 611 and a second limiting seat 612. The moving groove 601 is provided on the surface of the handle 1, and the docking block 602 is inserted inside the moving groove 601; a limiting groove 603 is provided on one side of the docking block 602, and a guide rod 604 is passed through the middle of the docking block 602, and both ends of the guide rod 604 are connected to the inner wall of the moving groove 601, and a connecting sleeve 605 is provided on the outer side of the handle 1; the inner wall of the connecting sleeve 605 is connected to the outer end of the docking block 602, a mounting groove 606 is provided inside one side of the connecting sleeve 605, and a mounting plate 607 is passed through the inside of the mounting groove 606; the outer side of the connecting sleeve 605 A limiting rod 608 connected to the mounting plate 607 is passed through, and a first spring 609 is sleeved on the outer side of the limiting rod 608, and one end of the first spring 609 is connected to the inner wall of the mounting groove 606; the other end of the first spring 609 is connected to the mounting plate 607, and the outer end of the limiting rod 608 is connected to the outer plate 610, and the inner wall ends of the outer plate 610 are respectively connected to the first limiting seat 611 and the second limiting seat 612; the first limiting seat 611 and the second limiting seat 612 pass through the connecting sleeve 605 and are inserted into the interior of the handle 1, and the two ends of the mounting plate 607 are respectively connected to the first limiting seat 611 and the second limiting seat 612, and the limiting rods 608 are distributed at equal intervals, and the mounting plate 607 forms a telescopic structure between the first spring 609 and the mounting groove 606, and the cross-sectional size of the docking block 602 matches the cross-sectional size of the movable groove 601, and the docking block 602 and the movable groove 601 are slidably connected.

[0026] During specific implementation, the connecting sleeve 605 and the handle 1 are overlapped in the initial state, and the first limiting seat 611 is docked inside the upper limiting groove 603 of the docking block 602. By pulling the outer plate 610 outward, the connected first limiting seat 611, the second limiting seat 612, the mounting plate 607 and the limiting rod 608 are synchronously moved outward. While the movable mounting plate 607 moves inside the mounting groove 606, it squeezes the first spring 609 arranged on the outside of the limiting rod 608 until the outer plate 610 is pulled to the limit position. At this time, the first limiting seat 611 and the limiting groove 603 on the docking block 602 are separated. At this time, the connecting sleeve 605 is pulled outward to the limit position. The pulled connecting sleeve 605 drives the connected docking block 602 to move along the guide rod 604. The outer plate 610 is then loosened, and the loosened outer plate 610 and the mounting plate 607 are automatically reset to their initial positions inwardly by the elastic force of the first spring 609. At this time, the second limit seat 612 is inserted into the upper limit groove 603 of the docking block 602 to limit the extended connecting sleeve 605. At this time, the connecting sleeve 605 and the handle 1 are misaligned. By arranging a connecting sleeve 605 that can be pulled outward and limited on the outside of the handle 1, the staff's grip length of the adjustable wrench can be extended to meet the use in different situations, so that the adjustable wrench has an extended structure and a wide range of applications.

[0027] See also Figure 1 and Figure 2 A fixed seat 7 is provided on the outer side of the handle 1 near the transmission worm 4, and a movable groove 8 is opened inside the fixed seat 7, and a shielding plate 9 is provided on the outer wall of the transmission worm 4; a movable block 10 is connected to one side of the shielding plate 9, and the movable block 10 is inserted into the movable groove 8, and a connecting rod 11 passes through the middle of the movable block 10; a second spring 12 is sleeved on the outer side of the connecting rod 11, one end of the second spring 12 is connected to the movable groove 8, and the other end of the second spring 12 is connected to the movable block 10, and the movable block 10 forms a telescopic structure between the second spring 12 and the movable groove 8, and the outer wall of the shielding plate 9 is in contact with one side surface of the fixed seat 7.

[0028] In specific implementation, the shielding plate 9 in the initial state is shielded on the outside of the transmission worm 4. When it is necessary to rotate the transmission worm 4 to adjust the position of the movable spanner 3, the user pushes the shielding plate 9 from one side of the shielding plate 9 to the other side with the finger that rotates the transmission worm. The pushed shielding plate 9 drives the connected movable block 10 to move stably along the connecting rod 11 inside the movable groove 8, and the second spring 12 sleeved on the outside of the connecting rod 11 is squeezed by the moving movable block 10 until the user's finger can completely contact the transmission worm 4 to rotate it. At this time, one side of the user's finger is still in contact with the side of the shielding plate 9 and is in conflict with it. After rotating the transmission worm 4 to adjust the movable spanner head 3 to the required position for normal use, the finger can be separated from the transmission worm 4. At this time, the shielding plate 9 that is not affected by external force can automatically reset to the initial position outward through the elastic force of the second spring 12. By arranging a movable and automatically resettable shielding plate 9 on the outside of the transmission worm 4, the transmission worm 4 can be shielded to prevent foreign objects from entering the interior of the transmission worm 4 and affecting normal use, thereby making the adjustable wrench have a protective structure.

[0029] To sum up, when using the adjustable wrench with an extended structure, the user holds the handle 1 of the adjustable wrench, and extends the thumb holding the handle 1 to press on the outside of the transmission worm 4. The position of the movable spanner head 3 is adjusted outward by rotating the transmission worm 4, so that the distance between the movable spanner head 3 and the fixed spanner head 2 becomes larger, and then the movable spanner head 3 and the fixed spanner head 2 are correspondingly sleeved on the outside of the connecting piece to be screwed, and the transmission worm 4 is rotated in the opposite direction again to move the movable spanner head 3 to the side close to the fixed spanner head 2 until the teeth 5 on the inner wall of the movable spanner head 3 and the fixed spanner head 2 are tightly fitted with the outside of the connecting piece, and the connecting piece can be tightened or loosened. This is the prior art and will not be elaborated here. The content not described in detail in this description belongs to the prior art known to professional and technical personnel in this field.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adjustable wrench with an extended structure, comprising a handle (1), a fixed wrench head (2), an adjustable wrench head (3) and a transmission worm (4), characterized in that: A fixed spanner head (2) is arranged at one end of the handle (1), and a movable spanner head (3) is arranged on the inner side of the fixed spanner head (2). A transmission worm (4) is embedded and installed inside the handle (1) near the movable spanner head (3), and the movable spanner head (3) is driven to move by rotating the transmission worm (4). The inner walls of the fixed spanner head (2) and the movable spanner head (3) are both provided with teeth (5).

2. The adjustable wrench with an extended structure according to claim 1, characterized in that: An extension assembly (6) is arranged inside the handle (1), and the extension assembly (6) comprises a movable groove (601), a docking block (602), a limiting groove (603), a guide rod (604), a connecting sleeve (605), a mounting groove (606), a mounting plate (607), a limiting rod (608), a first spring (609), an outer plate (610), a first limiting seat (611) and a second limiting seat (612); the movable groove (601) is provided on the surface of the handle (1), and a docking block (602) is inserted inside the movable groove (601).

3. The adjustable wrench with an extended structure according to claim 2, characterized in that: A limiting groove (603) is provided on one side of the docking block (602), and a guide rod (604) passes through the middle of the docking block (602), both ends of the guide rod (604) are connected to the inner wall of the movable groove (601), and a connecting sleeve (605) is sleeved on the outer side of the handle (1).

4. The adjustable wrench with an extended structure according to claim 3, characterized in that: The inner wall of the connecting sleeve (605) is connected to the outer end of the docking block (602), a mounting groove (606) is provided inside one side of the connecting sleeve (605), and a mounting plate (607) penetrates the inside of the mounting groove (606).

5. The adjustable wrench with an extended structure according to claim 4, characterized in that: A limiting rod (608) connected to the mounting plate (607) passes through the outer side of the connecting sleeve (605), and a first spring (609) is sleeved on the outer side of the limiting rod (608), and one end of the first spring (609) is connected to the inner wall of the mounting groove (606).

6. The adjustable wrench with an extended structure according to claim 5, characterized in that: The other end of the first spring (609) is connected to the mounting plate (607), the outer end of the limiting rod (608) is connected to the outer plate (610), and the inner wall ends of the outer plate (610) are respectively connected to the first limiting seat (611) and the second limiting seat (612).

7. The adjustable wrench with an extended structure according to claim 6, characterized in that: The first limiting seat (611) and the second limiting seat (612) penetrate the connecting sleeve (605) and are inserted into the interior of the handle (1); the two ends of the mounting plate (607) are respectively connected to the first limiting seat (611) and the second limiting seat (612).

8. The adjustable wrench with an extended structure according to claim 1, characterized in that: A fixing seat (7) is arranged on the outside of the handle (1) close to the transmission worm (4), and a movable groove (8) is provided inside the fixing seat (7). A shielding plate (9) is arranged on the outer wall of the transmission worm (4).

9. The adjustable wrench with an extended structure according to claim 8, characterized in that: A movable block (10) is connected to one side of the shielding plate (9), and the movable block (10) is inserted into the movable groove (8), and a connecting rod (11) passes through the middle of the movable block (10).

10. The adjustable wrench with an extended structure according to claim 9, characterized in that: A second spring (12) is sleeved on the outer side of the connecting rod (11), one end of the second spring (12) is connected to the movable groove (8), and the other end of the second spring (12) is connected to the movable block (10).

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