Electric wrench facilitating horizontal limiting

Abstract

The utility model discloses an electric wrench convenient for horizontal limit, which relates to the field of electric wrenches, and comprises a fixed base and a grip vertically mounted in the middle of the top end of the fixed base, the top end of the grip is fixedly connected with a driving motor, and the output end of the driving motor is fixedly connected with a mounting ring. An air storage groove is formed in the lower end of the interior of the fixed base, and a limiting mechanism is arranged in the air storage groove and used for guaranteeing horizontal propelling of the electric wrench in the nut screwing process. According to the electric wrench facilitating horizontal limiting, in the horizontal limiting process of the limiting plate, the anti-skid performance between the limiting plate and a contact wall surface or a plate block can be effectively improved through the anti-skid layer, and the situation that the limiting plate slips off in the screwing process is avoided; and by means of the anti-slip strips, fitting adjustment can be conducted in time according to the situation when the wall face or the plate is not flat enough, and therefore the overall horizontal stability of the limiting plate is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of electric wrenches, in particular to an electric wrench which is convenient for horizontal limiting. Background Art

[0002] An electric wrench is an electric tool for tightening and loosening bolts and nuts. It is a tool for tightening high-strength bolts. An electric wrench can be used to quickly tighten or loosen nuts in different positions, thereby connecting or disassembling parts and facilitating better stability of connection between devices.

[0003] In the prior art, a Chinese patent with authorization announcement number CN217751224U discloses an electric wrench with an auxiliary limiting structure, including a wrench body, a fixed shell being fixed at the lower end of the wrench body, the fixed shell being provided with a slide groove, and two support frames being slidably provided at both ends of the slide groove. The utility model slides support frames on both sides of the existing electric wrench. When in use, the support frames are slid outward so that the lower ends of the support frames are supported on the workpiece, thereby improving the stability of the wrench body during operation. The bidirectional threaded rod is driven to rotate by rotating the rotating block, so that the two support frames are driven to slide when the bidirectional threaded rod rotates, thereby facilitating operation and adjusting the support of the support frames.

[0004] The above-mentioned mechanism plays the role of horizontal limit support through the cooperation of components such as the support frame, the bidirectional threaded rod, and the rotating block. However, in actual use, due to the large size of the support frame, there is nowhere to place the support frame when densely installing nuts, and the height of the support frame is not easy to change, resulting in insufficient support. Utility Model Content

[0005] The utility model aims to provide an electric wrench which is convenient for horizontal limiting, so as to solve the problems in the above background technology that the supporting frame is too large in size and the height of the supporting frame cannot be changed, resulting in unstable support.

[0006] To achieve the above object, the utility model provides the following technical solution: an electric wrench that is convenient for horizontal limit, comprising a fixed base and a handle vertically installed at the middle position of the top of the fixed base, the top of the handle is fixedly connected to a driving motor, and the output end of the driving motor is fixedly connected to a mounting ring;

[0007] An air storage tank is provided at the lower end of the fixed base, and a limiting mechanism is provided inside the air storage tank, and the limiting mechanism is used to ensure the horizontal advancement of the electric wrench during the process of screwing the nut, so as to avoid the problem of insufficient tightening caused by angle deviation;

[0008] The outer side of the mounting ring is snap-connected with a rotating ring via a disassembly and assembly mechanism, and the disassembly and assembly mechanism is used to snap-connect the rotating ring, so as to facilitate quick disassembly and assembly.

[0009] Furthermore, the limiting mechanism includes a rubber airbag, and the rubber airbag is fixedly connected to both sides of the handle, the lower end of one end of the rubber airbag is connected to the air storage tank through a hose, the inside of the air storage tank is slidably connected with a piston plate, and both sides of one end of the piston plate are fixedly connected with support rods, and a limiting plate is installed at one end of the support rod.

[0010] Furthermore, an anti-slip mechanism is provided at one end of the limiting plate, and the anti-slip mechanism is used to increase the anti-slip performance of the contact between the limiting plate and the wall surface. The anti-slip mechanism includes an anti-slip layer, and the anti-slip layer is adhered to one end of the limiting plate. One end of the anti-slip layer is fixedly connected to a plurality of anti-slip strips, and the bottom end of the fixed base is fixedly connected to a plurality of fixing holes.

[0011] Furthermore, the cross section of the anti-slip strip is semicircular, and the anti-slip strips are evenly spaced and distributed at one end of the anti-slip layer.

[0012] Furthermore, a support block is fixedly connected inside the anti-slip strip, and the length of the support block is equal to the length of the anti-slip strip.

[0013] Furthermore, the disassembly and assembly mechanism includes a fixed plate, and the fixed plate is fixedly connected to the outer side of the mounting ring, one side of the rotating ring is fitted with the fixed plate, and a plurality of mounting plates are fixedly connected to the outer side of the fixed plate, both ends of the outer side of the rotating ring are fixedly connected to mounting boxes, and the interior of the mounting box is fixedly connected to a card block through a connecting spring, and a card slot matching the card block is opened on one side of the mounting plate.

[0014] Furthermore, one side of the connecting spring is connected to one side of the installation box, and an elastic structure is formed between the installation box and the clamping block through the connecting spring.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. Hold the handle, and the inside of the palm of the user will contact and squeeze the rubber airbag. The different forces applied by squeezing will achieve different amounts of gas extrusion inside the rubber airbag. The gas enters the gas storage tank through the hose, and the support rod and the limit plate are pushed until the limit plate can contact the wall or device plate below the screwing position, thereby playing a horizontal limit role, ensuring that the electric wrench is always horizontal during the screwing process, effectively avoiding the problem of deviation during the screwing process;

[0017] Furthermore, in the process of continuous screwing and advancement, the electric wrench will push the limit plate to the screwing position, so that the gas returns to the inside of the rubber airbag through the hose, and at the same time, the limit plate can be stored inside the air storage tank, so as to avoid the position being unable to change during the screwing process, affecting the stability of the whole screwing;

[0018] Furthermore, in the process of horizontally limiting the limit plate, the anti-skid layer can effectively increase the anti-skid performance between the limit plate and the contact wall or plate, thereby effectively playing an anti-skid role and preventing the limit plate from slipping during the screwing process. In addition, the anti-skid strip can be used to timely adjust the fit according to the situation when the wall or plate is not flat enough, thereby ensuring the overall horizontal stability of the limit plate. The support block can support the inside of the anti-skid strip to avoid deformation caused by the inability to reset the anti-skid strip after being squeezed, which affects subsequent repeated use. While performing anti-skid support, the fixing hole can be used to increase the anti-skid performance of the bottom end of the fixed base, so that the anti-skid performance of the wrench is increased when it is pushed forward, reducing the vibration and influence on the hand caused by the reaction force during screwing.

[0019] 2. By replacing the rotating ring, nuts of different sizes can be quickly adapted. By rotating the rotating ring and pulling it to one end, the clamping block is squeezed and separated from the clamping slot. At the same time, the clamping block moves into the inside of the installation box, and the connecting spring inside the installation box is squeezed, so that the rotating ring is separated from the fixing hole and the fixing plate, thereby realizing the disassembly and replacement of the rotating ring;

[0020] Furthermore, by placing the rotating ring on the outside of the fixing hole and rotating it slightly, the block and the slot can be engaged, thereby achieving the overall installation of the rotating ring, making the overall installation more flexible and convenient, and reducing the time for aligning the block and the slot during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 It is a three-dimensional structural schematic diagram of the limiting mechanism of the utility model;

[0023] Figure 3 It is a schematic diagram of the explosion structure of the anti-skid mechanism of the utility model;

[0024] Figure 4 It is a partial enlarged structural schematic diagram of the support block of the utility model;

[0025] Figure 5 It is a schematic diagram of the side-view cutaway three-dimensional structure of the utility model;

[0026] Figure 6It is a schematic diagram of the explosion structure of the disassembly and assembly mechanism of the utility model.

[0027] In the figure: 1. fixed base; 2. handle; 3. drive motor; 4. rotating ring; 5. rubber airbag; 6. hose; 7. air storage tank; 8. piston plate; 9. support rod; 10. limit plate; 11. anti-slip layer; 12. anti-slip strip; 13. support block; 14. mounting ring; 15. fixing hole; 16. fixing plate; 17. mounting box; 18. connecting spring; 19. clamping block; 20. mounting plate; 21. clamping slot. DETAILED DESCRIPTION

[0028] 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.

[0029] Embodiment 1:

[0030] like Figure 1 , Figure 2 and Figure 5 The technical solution shown is to solve the problem that the electric wrench is subjected to a large reaction force when screwing a nut, which leads to unstable screwing of the electric wrench: the electric wrench convenient for horizontal limit discloses a limit mechanism, including a fixed base 1 and a handle 2 vertically installed at the middle position of the top of the fixed base 1, the top of the handle 2 is fixedly connected to a driving motor 3, and the output end of the driving motor 3 is fixedly connected to a mounting ring 14;

[0031] An air storage tank 7 is provided at the lower end of the fixed base 1, and a limit mechanism is provided inside the air storage tank 7. The limit mechanism is used to ensure the horizontal advancement of the electric wrench during the process of screwing the nut, so as to avoid the problem of insufficient tightening caused by angle deviation;

[0032] The outer side of the mounting ring 14 is snap-connected with the rotating ring 4 via a disassembly and assembly mechanism, and the disassembly and assembly mechanism is used to snap-connect the rotating ring 4 to facilitate quick disassembly and assembly.

[0033] The limiting mechanism includes a rubber airbag 5, and the rubber airbag 5 is fixedly connected to both sides of the handle 2. The lower end of one end of the rubber airbag 5 is connected to the air storage tank 7 through a hose 6. The inside of the air storage tank 7 is slidably connected with a piston plate 8, and both sides of one end of the piston plate 8 are fixedly connected with a support rod 9, and a limiting plate 10 is installed at one end of the support rod 9.

[0034] In this example, by placing the nut at the position where it needs to be screwed, the rotating ring 4 is sleeved on the outside of the nut, and the handle 2 is held, the inner side of the palm of the user will contact and squeeze the rubber airbag 5. The different forces applied by the squeezing can achieve different amounts of gas extrusion from the rubber airbag 5. The gas enters the air storage tank 7 through the hose 6, thereby pushing the piston plate 8 out. The piston plate 8 pushes the support rod 9 and the limit plate 10 to the outside of the air storage tank 7 until the limit plate 10 can contact the wall or device plate below the screwing position, thereby playing a horizontal limit role. The function is to ensure that the electric wrench is always horizontal during the screwing process, effectively avoiding the problem of deviation during the screwing process, and then the mounting ring 14 and the rotating ring 4 are driven by the driving motor 3 to rotate, so that the nut is screwed. In the process of continuous screwing and advancement, the electric wrench will push the limit plate 10 to the screwing position, so that the gas returns to the inside of the rubber airbag 5 through the hose 6, and at the same time, the limit plate 10 can be stored in the inner side of the air storage tank 7, avoiding the position being unable to change during the screwing process to affect the stability of the overall screwing.

[0035] Embodiment 2:

[0036] like Figure 1-Figure 5 The technical solution shown is to solve the problem that the limit plate 10 is easy to slide when limiting due to the large vibration force: the electric wrench that is convenient for horizontal limiting discloses an anti-slip mechanism, one end of the limit plate 10 is provided with an anti-slip mechanism, and the anti-slip mechanism is used to increase the anti-slip performance of the contact between the limit plate 10 and the wall, the anti-slip mechanism includes an anti-slip layer 11, and the anti-slip layer 11 is adhered to one end of the limit plate 10, one end of the anti-slip layer 11 is fixedly connected to a plurality of anti-slip strips 12, and the bottom end of the fixed base 1 is fixedly connected to a plurality of fixing holes 15.

[0037] The cross section of the anti-slip strip 12 is semicircular, and the anti-slip strips 12 are evenly spaced and distributed at one end of the anti-slip layer 11 .

[0038] A support block 13 is fixedly connected inside the anti-slip strip 12 , and the length of the support block 13 is equal to the length of the anti-slip strip 12 .

[0039] In this example, during the horizontal limiting process of the limit plate 10, the anti-slip layer 11 can effectively increase the anti-slip performance between the limit plate 10 and the contact wall or plate, thereby effectively playing an anti-slip role and preventing the limit plate 10 from slipping during the screwing process. The anti-slip strip 12 can be used to make timely adjustments according to the situation when the wall or plate is not flat enough, thereby ensuring the overall horizontal stability of the limit plate 10. The support block 13 can support the inside of the anti-slip strip 12 to avoid deformation caused by the anti-slip strip 12 being unable to reset after being squeezed, which affects subsequent repeated use.

[0040] Embodiment three:

[0041] like Figure 1 , Figure 5 and Figure 6 The technical solution shown is to solve the problem of quickly replacing the rotating ring 4 when screwing different nuts: the electric wrench that is easy to limit horizontally discloses a disassembly and assembly mechanism, which includes a fixed plate 16, and the fixed plate 16 is fixedly connected to the outer side of the mounting ring 14, one side of the rotating ring 4 is in contact with the fixed plate 16, and the outer side of the fixed plate 16 is fixedly connected with multiple mounting plates 20, both ends of the outside of the rotating ring 4 are fixedly connected with mounting boxes 17, and the interior of the mounting box 17 is fixedly connected with a clamping block 19 through a connecting spring 18, and one side of the mounting plate 20 is provided with a clamping groove 21 matching the clamping block 19.

[0042] One side of the connecting spring 18 is connected to one side of the installation box 17 , and an elastic structure is formed between the installation box 17 and the clamping block 19 through the connecting spring 18 .

[0043] In this example, when the nut sizes are different, nuts of different sizes can be quickly adapted by replacing the rotating ring 4. By rotating the rotating ring 4 and pulling it to one end, the block 19 is squeezed by force and separated from the slot 21. At the same time, the block 19 moves to the interior of the installation box 17, and the connecting spring 18 inside the installation box 17 is squeezed, thereby separating the rotating ring 4 from the fixing hole 15 and the fixing plate 16, thereby realizing the disassembly and replacement of the rotating ring 4.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric wrench that is convenient for horizontal limiting, comprising a fixed base (1) and a handle (2) vertically mounted at the middle position of the top of the fixed base (1), the top of the handle (2) being fixedly connected to a drive motor (3), and the output end of the drive motor (3) being fixedly connected to a mounting ring (14); Features: An air storage tank (7) is provided at the lower end of the fixed base (1), and a limit mechanism is provided inside the air storage tank (7), wherein the limit mechanism is used to ensure horizontal advancement of the electric wrench during the process of screwing the nut, thereby avoiding the problem of insufficient tightening due to angle deviation; The outer side of the mounting ring (14) is snap-connected with the rotating ring (4) via a disassembly and assembly mechanism, and the disassembly and assembly mechanism is used to snap-connect the rotating ring (4) to facilitate quick disassembly and assembly.

2. The electric wrench for facilitating horizontal positioning according to claim 1, characterized in that: The limiting mechanism comprises a rubber airbag (5), and the rubber airbag (5) is fixedly connected to both sides of the handle (2), the lower end of one end of the rubber airbag (5) is connected to the air storage tank (7) through a hose (6), the interior of the air storage tank (7) is slidably connected with a piston plate (8), and both sides of one end of the piston plate (8) are fixedly connected with a support rod (9), and a limiting plate (10) is installed at one end of the support rod (9).

3. The electric wrench for facilitating horizontal positioning according to claim 2, characterized in that: An anti-slip mechanism is provided at one end of the limiting plate (10), and the anti-slip mechanism is used to increase the anti-slip performance of the contact between the limiting plate (10) and the wall surface, the anti-slip mechanism comprises an anti-slip layer (11), and the anti-slip layer (11) is adhered to one end of the limiting plate (10), one end of the anti-slip layer (11) is fixedly connected to a plurality of anti-slip strips (12), and the bottom end of the fixed base (1) is fixedly connected to a plurality of fixing holes (15).

4. The electric wrench for facilitating horizontal positioning according to claim 3, characterized in that: The cross section of the anti-slip strip (12) is semicircular, and the anti-slip strips (12) are distributed at equal intervals at one end of the anti-slip layer (11).

5. The electric wrench for facilitating horizontal positioning according to claim 4, characterized in that: A support block (13) is fixedly connected inside the anti-slip strip (12), and the length of the support block (13) is equal to the length of the anti-slip strip (12).

6. The electric wrench for facilitating horizontal positioning according to claim 1, characterized in that: The disassembly and assembly mechanism comprises a fixed plate (16), and the fixed plate (16) is fixedly connected to the outer side of the mounting ring (14); one side of the rotating ring (4) is in contact with the fixed plate (16), and a plurality of mounting plates (20) are fixedly connected to the outer side of the fixed plate (16); both ends of the outer side of the rotating ring (4) are fixedly connected to mounting boxes (17), and the interior of the mounting box (17) is fixedly connected to a clamping block (19) via a connecting spring (18); and a clamping groove (21) matching the clamping block (19) is provided on one side of the mounting plate (20).

7. The electric wrench for facilitating horizontal positioning according to claim 6, characterized in that: One side of the connecting spring (18) is connected to one side of the installation box (17), and an elastic structure is formed between the installation box (17) and the clamping block (19) via the connecting spring (18).

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