Ratchet wrench opening structure and electric ratchet wrench

Abstract

The application provides a ratchet wrench opening structure and an electric ratchet wrench, and relates to the technical field of electric tools. The ratchet wrench opening structure comprises a gear box, a transmission assembly, an opening gear and a transmission shaft for connecting with a ratchet assembly of the ratchet wrench; the transmission shaft is inserted into the gear box, and one end of the transmission shaft protruding from the gear box is connected with the ratchet assembly; the transmission assembly is arranged in the gear box, and the transmission assembly comprises a first transmission gear and a second transmission gear; the first transmission gear is in transmission connection with the transmission shaft, and the opening gear is in transmission connection with the first transmission gear through the second transmission gear; one end of the gear box is provided with an opening groove, and the opening of the opening gear can coincide with the opening groove, so that a pipeline can pass through the opening groove and enter the opening of the opening gear. The electric ratchet wrench comprises the ratchet wrench opening structure. The technical effect of being capable of disassembling and assembling the pipeline nut is achieved.

Description

Technical Field

[0001] This invention relates to the field of power tool technology, and more specifically, to a ratchet wrench opening structure and an electric ratchet wrench. Background Technology

[0002] Existing electric ratchet wrenches rely on a motor to drive a ratchet mechanism to achieve forward and reverse operation. They are flexible, time-saving, and labor-saving, and can efficiently complete the installation and removal of conventional standard nuts. They are widely used in equipment maintenance, mechanical assembly, and other work conditions, and greatly improve the efficiency of fastening operations.

[0003] However, existing electric ratchet wrenches are mainly used for removing screws, have a fully enclosed structure, and do not have the function of removing pipe nuts. Summary of the Invention

[0004] The purpose of this invention is to provide a ratchet wrench opening structure and an electric ratchet wrench to alleviate the technical problem of not being able to disassemble or assemble pipe nuts in the prior art.

[0005] In a first aspect, embodiments of the present invention provide a ratchet wrench opening structure, including a gearbox, a transmission assembly, an opening gear, and a transmission shaft for connecting to the ratchet assembly of the ratchet wrench; The drive shaft is inserted into the gearbox, and one end of the drive shaft protrudes from the gearbox and is connected to the ratchet assembly. The transmission assembly is disposed inside the gearbox. The transmission assembly includes a first transmission gear and a second transmission gear. The first transmission gear is connected to the transmission shaft. The open gear is connected to the first transmission gear through the second transmission gear. One end of the gearbox is provided with an opening slot, and the opening of the open gear can coincide with the opening slot so that the pipe passes through the opening slot and enters the opening of the open gear.

[0006] In conjunction with the first aspect, the present invention provides a possible implementation of the first aspect, wherein the above-mentioned ratchet wrench opening structure further includes a return assembly, the return assembly including a limiting pawl and a reset spring element; The limiting pawl is rotatably disposed inside the gearbox. The outer ring of the first transmission gear has a limiting groove for fitting the limiting pawl. The reset spring is disposed between the limiting pawl and the gearbox so that the limiting pawl abuts against the outer ring of the first transmission gear. When the ratchet assembly drives the first transmission gear to reverse, the limiting pawl can abut against the limiting groove. When the first transmission gear abuts against the limiting groove, the opening of the open gear is aligned with the opening groove.

[0007] In conjunction with the first aspect, the present invention provides one possible implementation of the first aspect, wherein the aforementioned limiting pawl is rotatably disposed within the gearbox via a cylindrical pin.

[0008] In conjunction with the first aspect, the present invention provides one possible implementation of the first aspect, wherein the aforementioned reset spring is a torsion spring.

[0009] In conjunction with the first aspect, the present invention provides a possible implementation of the first aspect, wherein the transmission shaft includes a central shaft and a central gear; The central gear is sleeved on the central shaft, and the central gear rotates synchronously with the central shaft. The central gear meshes with the first transmission gear.

[0010] In conjunction with the first aspect, the present invention provides one possible implementation of the first aspect, wherein a bearing is provided between the central gear and the gearbox.

[0011] In conjunction with the first aspect, the present invention provides a possible implementation of the first aspect, wherein the first transmission gear and the open gear have the same specifications.

[0012] In conjunction with the first aspect, the present invention provides a possible implementation of the first aspect, wherein the number of the second transmission gears is an even number, and the second transmission gears are arranged in two groups between the first transmission gear and the open gear.

[0013] In conjunction with the first aspect, the present invention provides a possible implementation of the first aspect, wherein the above-mentioned ratchet wrench opening structure further includes an angle adjustment component, the angle adjustment component including a positioning shaft, a positioning knob, a stop plate and a stop pin; The gear plate is mounted on the ratchet wrench, the gear pin is mounted on the gearbox, and the gear plate has multiple gear holes that are adapted to the gear pin. The positioning shaft passes through the transmission shaft from bottom to top, and the positioning knob passes through the transmission shaft from top to bottom. The positioning knob and the positioning shaft are threadedly connected. The gearbox can rotate horizontally relative to the ratchet wrench via the transmission shaft.

[0014] Secondly, embodiments of the present invention provide an electric ratchet wrench, including the ratchet wrench opening structure.

[0015] Beneficial effects: This invention provides a ratchet wrench opening structure, including a gearbox, a transmission assembly, an opening gear, and a transmission shaft for connecting to the ratchet assembly of the ratchet wrench. The transmission shaft is inserted into the gearbox, with one end protruding from the gearbox and connected to the ratchet assembly. The transmission assembly is disposed within the gearbox and includes a first transmission gear and a second transmission gear. The first transmission gear is drively connected to the transmission shaft, and the opening gear is drively connected to the first transmission gear via the second transmission gear. One end of the gearbox has an opening slot, and the opening of the opening gear can coincide with the opening slot, allowing a pipe to pass through the opening slot and enter the opening of the opening gear.

[0016] Specifically, during use, the ratchet wrench's open-end structure is installed at the front end of the electric ratchet wrench, and the drive shaft is inserted into the ratchet assembly of the ratchet wrench, so that the drive shaft is connected to the large ratchet of the ratchet wrench. During use, the electric ratchet wrench drives the open-end gear to rotate through the drive shaft, the first drive gear, and the second drive gear, so that the opening of the open-end gear is aligned with the opening slot of the gearbox. Then, the opening slot of the gearbox is moved towards the pipe, so that the nut on the pipe enters the opening of the open-end gear. Then, the rotation direction of the electric ratchet wrench is adjusted so that the electric ratchet wrench drives the open-end gear to drive the pipe nut to rotate.

[0017] This invention provides an electric ratchet wrench, including a ratchet wrench opening structure.

[0018] The electric ratchet wrench provided by this invention has the advantages mentioned above compared with the prior art, which will not be elaborated here. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the ratchet wrench opening structure provided in an embodiment of the present invention installed on an electric ratchet wrench; Figure 2 This is an exploded view of the ratchet wrench opening structure provided in an embodiment of the present invention; Figure 3 This is a cross-sectional view of the ratchet wrench opening structure provided in an embodiment of the present invention; Figure 4 A bottom view of the gearbox in the ratchet wrench opening structure provided in an embodiment of the present invention; Figure 5This is a schematic diagram of the internal structure of the gearbox in the ratchet wrench opening structure provided in an embodiment of the present invention.

[0021] icon: 10-Ratchet assembly; 20-Housing; 30-Large ratchet; 100 - Gearbox; 110 - Open slot; 200 - Transmission assembly; 210 - First transmission gear; 211 - Limiting groove; 220 - Second transmission gear; 300-Open gear; 400 - Drive shaft; 410 - Central shaft; 420 - Central gear; 430 - Bearing; 500 - Return component; 510 - Limiting pawl; 511 - Cylindrical pin; 520 - Reset spring component; 600 - Angle adjustment assembly; 610 - Positioning shaft; 611 - Positioning groove; 620 - Positioning knob; 630 - Gear plate; 631 - Gear hole; 640 - Gear pin. Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0027] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, this embodiment provides a ratchet wrench opening structure, including a gearbox 100, a transmission assembly 200, an opening gear 300, and a transmission shaft 400 for connecting to the ratchet assembly 10 of the ratchet wrench; the transmission shaft 400 is inserted into the gearbox 100, and one end of the transmission shaft 400 protrudes from the gearbox 100 and is connected to the ratchet assembly 10; the transmission assembly 200 is disposed in the gearbox 100, and the transmission assembly 200 includes a first transmission gear 210 and a second transmission gear 220, the first transmission gear 210 is connected to the transmission shaft 400, and the opening gear 300 is connected to the first transmission gear 210 through the second transmission gear 220; one end of the gearbox 100 is provided with an opening slot 110, and the opening of the opening gear 300 can coincide with the opening slot 110, so that a pipe passes through the opening slot 110 and enters the opening of the opening gear 300.

[0028] Specifically, during use, the ratchet wrench opening structure is installed at the front end of the electric ratchet wrench, and the drive shaft 400 is inserted into the ratchet assembly 10 of the ratchet wrench, so that the drive shaft 400 is connected to the large ratchet 30 of the ratchet wrench. During use, the electric ratchet wrench drives the opening gear 300 to rotate through the drive shaft 400, the first drive gear 210 and the second drive gear 220, so that the opening of the opening gear 300 is aligned with the opening slot 110 of the gearbox 100. Then, the opening slot 110 of the gearbox 100 is moved towards the pipe, so that the nut on the pipe enters the opening of the opening gear 300. Then, the rotation direction of the electric ratchet wrench is adjusted so that the electric ratchet wrench drives the opening gear 300 to drive the pipe nut to rotate.

[0029] In actual use, the ratchet wrench opening structure provided in this embodiment will be installed during the assembly process of the electric ratchet wrench. The ratchet assembly 10 of the electric ratchet wrench can drive the transmission shaft 400 to rotate, thereby driving the transmission assembly 200 to rotate, which in turn drives the opening gear 300 to rotate.

[0030] The open gear 300 has an internal hexagonal or internal quadrangular structure on its inner ring, which enables the open gear 300 to drive nuts or bolts of different specifications to rotate.

[0031] In addition, the electric ratchet wrench can be adjusted to rotate in both directions. For example, when the electric ratchet wrench drives the open gear 300 to rotate in the forward direction, the open gear 300 can drive the pipe nut to tighten. When the electric ratchet wrench drives the open gear 300 to rotate in the reverse direction, the open gear 300 can drive the pipe nut to loosen.

[0032] It should be noted that when the ratchet wrench is equipped with a return component 500, when the electric ratchet wrench drives the open gear 300 to rotate forward, the open gear 300 can drive the pipe nut to lock; when the electric ratchet wrench drives the open gear 300 to rotate in reverse, the open gear 300 returns to its original position so that the opening of the open gear 300 is aligned with the opening groove 110 of the gearbox 100; when it is necessary to loosen the pipe nut, the operator can flip the electric ratchet wrench so that the forward rotation of the electric ratchet wrench can loosen the pipe nut.

[0033] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, in the optional embodiment, the ratchet wrench opening structure further includes a return assembly 500, which includes a limiting pawl 510 and a reset spring 520. The limiting pawl 510 is rotatably disposed in the gearbox 100. The outer ring of the first transmission gear 210 is provided with a limiting groove 211 for matching the limiting pawl 510. The reset spring 520 is disposed between the limiting pawl 510 and the gearbox 100, so that the limiting pawl 510 abuts against the outer ring of the first transmission gear 210. When the ratchet assembly 10 drives the first transmission gear 210 to reverse, the limiting pawl 510 can abut against the limiting groove 211. When the first transmission gear 210 abuts against the limiting groove 211, the opening of the opening gear 300 is aligned with the opening groove 110.

[0034] The limiting pawl 510 is rotatably mounted inside the gearbox 100 via a cylindrical pin 511.

[0035] Among them, the reset spring element 520 is a torsion spring.

[0036] Specifically, when the electric ratchet wrench drives the first transmission gear 210 to rotate forward, the limiting groove 211 on the outer wall of the first transmission gear 210 will not abut against the limiting pawl 510, meaning the first transmission gear 210 can rotate normally, thus enabling the first transmission gear 210 to drive the open gear 300 to work normally. When the electric ratchet wrench drives the first transmission gear 210 to rotate in reverse, the rotation of the first transmission gear 210 can drive the open gear 300 to rotate in reverse. At this time, the limiting groove 211 on the outer wall of the first transmission gear 210 can abut against the limiting pawl 510. When the limiting groove 211 on the outer wall of the first transmission gear 210 abuts against the limiting pawl 510, the opening of the open gear 300 can rotate to align with the opening groove 110 of the gearbox 100.

[0037] The first transmission gear 210 and the open gear 300 are identical in specifications. The number of second transmission gears 220 is even, and they are arranged in two groups between the first transmission gear 210 and the open gear 300. This arrangement allows the first transmission gear 210 and the open gear 300 to rotate synchronously. Furthermore, the limiting groove 211 and the limiting pawl 510 ensure that when the first transmission gear 210 abuts against the limiting pawl 510, the opening of the open gear 300 aligns with the opening groove 110 of the gearbox 100.

[0038] It should be noted that the diameter of the second transmission gear 220 is smaller than the diameter of the first transmission gear 210, the number of second transmission gears 220 is even, both second transmission gears 220 mesh with the first transmission gear 210 at the same time, and the two second transmission gears 220 can ensure that at least one second transmission gear 220 can mesh with the open gear 300, so as to avoid the opening of the open gear 300 from affecting the transmission.

[0039] Preferably, the number of second transmission gears 220 can be set to four, and the four second transmission gears 220 are arranged in two groups.

[0040] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, in the optional embodiment, the transmission shaft 400 includes a central shaft 410 and a central gear 420; the central gear 420 is sleeved on the central shaft 410, the central gear 420 rotates synchronously with the central shaft 410, and the central gear 420 meshes with the first transmission gear 210.

[0041] A bearing 430 is provided between the central gear 420 and the gearbox 100.

[0042] Specifically, the bottom of the central shaft 410 is inserted into the gearbox 100, and the upper part of the central shaft 410 is inserted into the ratchet assembly 10 of the electric ratchet wrench. The central shaft 410 can rotate synchronously with the large ratchet 30 of the ratchet assembly 10. The central gear 420 is sleeved on the bottom of the central shaft 410, so that the central gear 420 can rotate synchronously with the central shaft 410. The central gear 420 meshes with the first transmission gear 210.

[0043] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, in an optional embodiment, the ratchet wrench opening structure further includes an angle adjustment component 600. The angle adjustment component 600 includes a positioning shaft 610, a positioning knob 620, a stop plate 630, and a stop pin 640. The stop plate 630 is disposed on the ratchet wrench, and the stop pin 640 is disposed on the gearbox 100. The stop plate 630 has multiple stop holes 631 that are adapted to the stop pin 640. The positioning shaft 610 passes through the transmission shaft 400 from bottom to top, and the positioning knob 620 passes through the transmission shaft 400 from top to bottom. The positioning knob 620 and the positioning shaft 610 are threadedly connected. The gearbox 100 can rotate horizontally relative to the ratchet wrench through the transmission shaft 400.

[0044] Specifically, the central shaft 410 and the central gear 420 can rotate relative to the gearbox 100. The stop plate 630 is located at the bottom of the ratchet wrench housing 20. The positioning shaft 610 and the positioning knob 620 are inserted into the large ratchet 30 of the ratchet assembly 10 from below and above, respectively. Then, the positioning shaft 610 and the positioning knob 620 are threaded together. When the positioning shaft 610 and the positioning knob 620 are tightened, the positioning knob 620 can abut against the top of the ratchet wrench housing 20, and the positioning shaft 610 abuts against the bottom of the gearbox 100, thereby preventing the gearbox 100 from rotating relative to the ratchet wrench housing 20.

[0045] The gearbox 100 is provided with a positioning block, and the positioning shaft 610 is provided with a positioning groove 611, so that the positioning shaft 610 is fixed relative to the gearbox 100.

[0046] The gearbox 100 is provided with a gear pin 640 and a gear plate 630 is provided with a plurality of gear holes 631. The gear pin 640 can cooperate with the gear holes 631 to facilitate the operator to adjust the rotation angle of the gearbox 100 in the horizontal direction.

[0047] This embodiment provides an electric ratchet wrench, including a ratchet wrench opening structure.

[0048] Specifically, the electric ratchet wrench provided in this embodiment has the advantages of the above-mentioned ratchet wrench opening structure compared with the prior art, which will not be elaborated here.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A ratchet wrench opening structure, characterized in that, include: Gearbox (100), transmission assembly (200), open gear (300) and transmission shaft (400) for connection with ratchet assembly (10) of ratchet wrench. The drive shaft (400) is inserted into the gearbox (100), and one end of the drive shaft (400) protrudes from the gearbox (100) and is connected to the ratchet assembly (10); The transmission assembly (200) is disposed inside the gearbox (100). The transmission assembly (200) includes a first transmission gear (210) and a second transmission gear (220). The first transmission gear (210) is connected to the transmission shaft (400). The open gear (300) is connected to the first transmission gear (210) through the second transmission gear (220). One end of the gearbox (100) is provided with an opening slot (110), and the opening of the open gear (300) can coincide with the opening slot (110) so that the pipe passes through the opening slot (110) and enters the opening of the open gear (300).

2. The ratchet wrench opening structure according to claim 1, characterized in that, It also includes a return assembly (500), which includes a limiting pawl (510) and a reset spring (520). The limiting pawl (510) is rotatably disposed inside the gearbox (100). The outer ring of the first transmission gear (210) is provided with a limiting groove (211) for matching the limiting pawl (510). The reset spring (520) is disposed between the limiting pawl (510) and the gearbox (100) so that the limiting pawl (510) abuts against the outer ring of the first transmission gear (210). When the ratchet assembly (10) drives the first transmission gear (210) to reverse, the limiting pawl (510) can abut against the limiting groove (211). When the first transmission gear (210) abuts against the limiting groove (211), the opening of the open gear (300) is aligned with the opening groove (110).

3. The ratchet wrench opening structure according to claim 2, characterized in that, The limiting pawl (510) is rotatably disposed in the gearbox (100) via a cylindrical pin (511).

4. The ratchet wrench opening structure according to claim 3, characterized in that, The reset spring (520) is a torsion spring.

5. The ratchet wrench opening structure according to claim 1, characterized in that, The transmission shaft (400) includes a central shaft (410) and a central gear (420). The central gear (420) is sleeved on the central shaft (410), and the central gear (420) rotates synchronously with the central shaft (410). The central gear (420) meshes with the first transmission gear (210).

6. The ratchet wrench opening structure according to claim 5, characterized in that, A bearing (430) is provided between the central gear (420) and the gearbox (100).

7. The ratchet wrench opening structure according to claim 1, characterized in that, The first transmission gear (210) and the open gear (300) have the same specifications.

8. The ratchet wrench opening structure according to claim 7, characterized in that, The number of the second transmission gears (220) is even, and the second transmission gears (220) are arranged in two groups between the first transmission gear (210) and the open gear (300).

9. The ratchet wrench opening structure according to any one of claims 1-8, characterized in that, It also includes an angle adjustment assembly (600), which includes a positioning shaft (610), a positioning knob (620), a gear plate (630), and a gear pin (640). The gear plate (630) is provided on the ratchet wrench, the gear pin (640) is provided on the gearbox (100), and the gear plate (630) has a plurality of gear holes (631) adapted to the gear pin (640). The positioning shaft (610) passes through the transmission shaft (400) from bottom to top, and the positioning knob (620) passes through the transmission shaft (400) from top to bottom. The positioning knob (620) and the positioning shaft (610) are threaded together. The gearbox (100) can rotate horizontally relative to the ratchet wrench via the drive shaft (400).

10. An electric ratchet wrench, characterized in that, Includes the ratchet wrench opening structure as described in any one of claims 1-9.

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