A long-life electric tool gear box cover plate convenient to disassemble

Abstract

This utility model discloses a long-life power tool gearbox cover that is easy to assemble and disassemble, specifically relating to the field of power tool technology. It includes a gearbox body, a housing, and a cover. Both the cover and the housing are located on the top of the gearbox body, with the housing rotatably connected to the outside of the top of the gearbox body. The cover has a connecting component for connecting to the gearbox body. The connecting component includes an annular plate mounted on the top of the cover, with grooves on both sides of the annular plate. A retaining plate is located inside the two grooves at opposite ends. This utility model uses a compression spring to easily retract the retaining plate into the groove, allowing the cover to be removed without restriction. Simultaneously, the spring's rebound force pushes the retaining plate outward into the retaining groove, fixing the cover to the outside of the gearbox body through the engagement of the retaining plate and the retaining groove. This achieves convenient disassembly of the cover for maintenance of the gearbox body, simplifying operation and effectively improving operational convenience.

Description

Technical Field

[0001] This utility model relates to the field of power tool technology, and more specifically to a long-life power tool gearbox cover that is easy to disassemble and assemble. Background Technology

[0002] In various power tools (such as electric drills, angle grinders, impact wrenches, etc.), the gearbox, as a core transmission component, undertakes the crucial task of converting the high-speed, low-torque output of the motor into low-speed, high-torque (or a specific speed / torque combination) output adapted to the operational needs. Internally, it integrates multi-stage gear sets, bearings, and a lubrication system, achieving efficient power transmission and speed ratio adjustment through precise meshing. The performance of the gearbox directly affects the overall efficiency, operational stability, and service life of the power tool, while the gearbox's encapsulation structure—especially the design of the cover plate—plays a decisive role in its protection, maintainability, and assembly efficiency. Power tool gearboxes generally use cover plates formed by stamping metal sheets, with screws passing through the cover plate and the gearbox flange surface for a tight seal.

[0003] As shown in the prior art published in CN217081344U, although this prior art allows the limiting member to rotate with the outer casing, and the limiting member moves in multiple first limiting holes, the limiting member collides with the first limiting holes to produce a sound, and at the same time has a damping feedback to the operator to indicate whether the gear shift is in place. However, in this prior art, the cover and gearbox are connected by bolts, which requires the operator to remove the bolts multiple times to remove the cover, thus affecting the convenience of the operator in inspecting and maintaining the gearbox. Utility Model Content

[0004] To overcome the aforementioned deficiencies of the prior art, this utility model provides a long-life power tool gearbox cover that is easy to disassemble and assemble. A compression spring facilitates the retraction of the retaining plate into the groove, allowing for the removal of the unrestricted cover. Simultaneously, the spring's rebound force pushes the retaining plate outward into the groove, and the engagement of the retaining plate and groove secures the cover to the outside of the gearbox body. This achieves convenient disassembly of the cover for maintenance of the gearbox body, simplifying operation and effectively improving operational convenience, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a long-life power tool gearbox cover that is easy to disassemble and assemble, comprising a gearbox body, a housing, and a cover. The cover and the housing are both located on the top of the gearbox body, and the housing is rotatably connected to the outside of the top of the gearbox body. The cover is provided with a connector for connecting to the gearbox body.

[0006] The connector includes a ring plate installed on the top of the cover. The ring plate has grooves on both sides. The two grooves are located at opposite ends and each has a retaining plate inside. Two telescopic rods for connecting the grooves are installed on the side of the retaining plate near the ring plate. A spring is sleeved on the outside of the telescopic rod near the retaining plate.

[0007] Positioning plates are provided on both sides of the ring plate, and a slot is provided on the side of the positioning plate corresponding to the card plate. The end of the card plate away from the ring plate extends into the slot.

[0008] In a preferred embodiment, slides are provided at the top of both ends of the ring plate. The slides are connected to the grooves. A connecting plate is provided inside the end of the slide away from the ring plate. The bottom end of the connecting plate is fixed together with the top of the card plate. The connecting plate and the card plate are connected as one unit, which makes it easy to move the connecting plate to move the card plate. The slides can provide space for the moving of the connecting plate.

[0009] In a preferred embodiment, an adjusting plate is provided on the side of the top of the ring plate corresponding to the connecting plate, and the bottom of the adjusting plate is fixed together with the top of the connecting plate. Through the connection between the adjusting plate and the connecting plate, the adjusting plate can move the connecting plate and the locking plate together, thereby improving the convenience of adjusting the locking plate.

[0010] In a preferred embodiment, the width and length of the adjusting plate are both greater than the length and width of the slide. By setting the width and length of the adjusting plate to be greater than the length and width of the slide, the adjusting plate can block the slide, thereby preventing debris from entering the groove and causing contamination.

[0011] In a preferred embodiment, the top of the cover has an assembly hole on one side corresponding to the positioning plate, and the bottom end of the positioning plate passes through the assembly hole and is fixed together with the top of the gearbox body. By setting the assembly hole, the cover can be fixed to the outside of the positioning plate, and then the adjusting plate engages with the positioning plate to achieve the effect of fixing the cover.

[0012] In a preferred embodiment, both the cross-section of the card plate and the cross-section of the groove are rectangular, and the outer side of the card plate contacts the inner wall of the groove. By making both the card plate and the groove rectangular, the groove can limit the card plate, thereby ensuring the stability of the card plate during displacement and preventing the card plate from shifting during the displacement process.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] The compression spring facilitates the retraction of the card plate into the groove, allowing the unrestricted cover to be removed. Simultaneously, the spring's rebound force pushes the card plate outward into the slot, and the engagement of the card plate and the slot secures the cover to the outside of the gearbox body. This enables convenient removal of the cover for maintenance of the gearbox body, simplifying the operation and effectively improving operational convenience. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a front view of the annular plate of this utility model;

[0017] Figure 3 This is an exploded view of the positioning plate of this utility model;

[0018] Figure 4 This is a cross-sectional view of the annular plate of this utility model;

[0019] Figure 5 For the present utility model Figure 4 Enlarged view of section A in the middle;

[0020] Figure 6 This is a side view of the groove of this utility model.

[0021] The attached figures are labeled as follows: 1. Gearbox body; 2. Housing; 3. Cover; 4. Ring plate; 5. Groove; 6. Clamping plate; 7. Telescopic rod; 8. Spring; 9. Positioning plate; 10. Slot; 11. Slide rail; 12. Connecting plate; 13. Adjusting plate; 14. Assembly hole. Detailed Implementation

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

[0023] Refer to the instruction manual appendix Figure 1-6This utility model provides a long-life power tool gearbox cover that is easy to assemble and disassemble, including a gearbox body 1, a housing 2, and a cover 3. The cover 3 and the housing 2 are both located on the top of the gearbox body 1, and the housing 2 is rotatably connected to the outside of the top of the gearbox body 1. The cover 3 is provided with a connector for connecting the gearbox body 1. The connector includes an annular plate 4 installed on the top of the cover 3. The annular plate 4 has grooves 5 on both sides. The two grooves 5 are provided with a retaining plate 6 at the ends of the two grooves 5 that are far apart. Two telescopic rods 7 for connecting the grooves 5 are installed on the side of the retaining plate 6 near the annular plate 4. The telescopic rods 7 are fitted with springs 8 on the outside of the ends of the telescopic rods 7 near the retaining plate 6. The annular plate 4 has positioning plates 9 on both sides. The positioning plates 9 have a retaining groove 10 on the side of the retaining plate 6 corresponding to the retaining plate 6. The end of the retaining plate 6 away from the annular plate 4 extends into the retaining groove 10.

[0024] When it is necessary to remove the cover 3 to maintain the equipment inside the gearbox body 1, the operator needs to operate the locking plate 6 to separate it from the slot 10 on the positioning plate 9. To improve the convenience of operating the locking plate 6, slide rails 11 are provided at the top of both ends of the ring plate 4. The slide rails 11 are connected to the grooves 5. A connecting plate 12 is provided inside the end of the slide rail 11 away from the ring plate 4, and the bottom end of the connecting plate 12 is fixed to the top of the locking plate 6. In this way, the connecting plate 12 can be moved to move the locking plate 6 inward, and the slide rail 11 can provide space for the connecting plate 12 to move, thereby allowing the locking plate 6 to be adjusted from the outside of the ring plate 4.

[0025] Furthermore, an adjusting plate 13 is provided on one side of the top of the ring plate 4 corresponding to the connecting plate 12, and the bottom of the adjusting plate 13 is fixed to the top of the connecting plate 12. This allows the operator to move the connecting plate 12 and the clamping plate 6 by operating the adjusting plate 13, thereby expanding the operating surface and improving operational convenience. Moreover, the width and length of the adjusting plate 13 are both greater than the length and width of the slide 11. This allows the adjusting plate 13 to shield the slide 11, preventing external impurities from falling into the groove 5 through the slide 11 and causing contamination, and preventing debris accumulation from affecting the smooth movement of the clamping plate 6.

[0026] With the above structure, the inner adjusting plate 13 can drive the connecting plate 12 to move inward, and the connecting plate 12 can then drive the clamping plate 6 to move inward into the groove 5, thereby separating the clamping plate 6 from the groove 5 on the positioning plate 9, so that the staff can easily lift the unrestricted cover 3 and achieve the effect of convenient disassembly of the cover 3.

[0027] Meanwhile, because the top of the cover 3 has an assembly hole 14 on one side corresponding to the positioning plate 9, and the bottom end of the positioning plate 9 passes through the assembly hole 14 and is fixed together with the top of the gearbox body 1, when assembling the cover 3, the operator can fit the cover 3 onto the outside of the two positioning plates 9 through the assembly hole 14, and then release the adjusting plate 13 so that the spring 8 can push the locking plate 6 outward. The locking plate 6 then inserts into the slot 10 on the positioning plate 9. In this way, the cover 3 can be fixed to the outside of the gearbox body 1 by means of the engagement of the locking plate 6 and the slot 10.

[0028] To ensure the stability of the card plate 6 during displacement, it is necessary to limit the card plate 6. Therefore, the cross-section of both the card plate 6 and the groove 5 are set to rectangles, and the outer side of the card plate 6 contacts the inner wall of the groove 5. In this way, the groove 5 limits the card plate 6, preventing the card plate 6 from tilting during displacement and ensuring the stability of the card plate 6 when it is engaged in the slot 10.

[0029] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A long-life power tool gearbox cover that is easy to assemble and disassemble, comprising a gearbox body (1), a housing (2), and a cover (3), wherein the cover (3) and the housing (2) are both located on the top of the gearbox body (1), and the housing (2) is rotatably connected to the outside of the top of the gearbox body (1), characterized in that: The cover (3) is provided with a connector for connecting the gearbox body (1) on the outside; The connector includes an annular plate (4) installed on the top of the cover (3). The annular plate (4) has grooves (5) on both sides. The two grooves (5) are provided with a retaining plate (6) at the ends of the grooves (5) that are far apart. The retaining plate (6) is provided with two telescopic rods (7) for connecting the grooves (5) on the side of the retaining plate (6) that is close to the annular plate (4). The telescopic rod (7) is provided with a spring (8) on the outside of the end of the retaining plate (6). Positioning plates (9) are provided on both sides of the ring plate (4), and a slot (10) is provided on one side of the positioning plate (9) corresponding to the card plate (6). The end of the card plate (6) away from the ring plate (4) extends into the slot (10).

2. The long-life power tool gearbox cover plate that is easy to disassemble and assemble according to claim 1, characterized in that: The top of both ends of the ring plate (4) is provided with slides (11), the slides (11) are connected to the groove (5), and the end of the slide (11) away from the ring plate (4) is provided with a connecting plate (12), and the bottom end of the connecting plate (12) is fixed together with the top of the card plate (6).

3. The long-life power tool gearbox cover plate that is easy to disassemble and assemble according to claim 2, characterized in that: An adjustment plate (13) is provided on the top of the ring plate (4) on one side corresponding to the connecting plate (12), and the bottom of the adjustment plate (13) is fixed together with the top of the connecting plate (12).

4. The long-life power tool gearbox cover plate that is easy to disassemble and assemble according to claim 3, characterized in that: The width and length of the adjusting plate (13) are both greater than the length and width of the slide (11).

5. A long-life power tool gearbox cover plate that is easy to disassemble and assemble according to claim 1, characterized in that: The top of the cover (3) has an assembly hole (14) on one side corresponding to the positioning plate (9), and the bottom end of the positioning plate (9) passes through the assembly hole (14) and is fixed together with the top of the gearbox body (1).

6. The long-life power tool gearbox cover plate that is easy to disassemble and assemble according to claim 1, characterized in that: The cross-section of the card plate (6) and the cross-section of the groove (5) are both rectangular, and the outside of the card plate (6) is in contact with the inner wall of the groove (5).

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