Sealing anti-off type high-density electric tool gear ring

Abstract

The utility model discloses a sealed anti -drop type high density electric tool gear ring, including fixed ring, still including spline groove, the inside of fixed ring is provided with a plurality of spline groove that is circularly distributed, the inside of fixed ring is provided with gear ring, the outside of gear ring corresponds the position of spline groove and is all fixed with butt joint block, butt joint block and spline groove sliding connection are set up first screw hole on butt joint block, the outside of fixed ring corresponds the position of spline groove and is penetrated and set up second screw hole, butt joint block is fixedly connected with fixed ring through bolt, the outside of fixed ring is provided with positioning mechanism, and fixed ring is provided with weight reduction mechanism, the utility model discloses the separation type structure of gear ring and fixed ring, has improved the maintainability of spare part and resource utilization rate obviously, when gear ring produces abrasion because of long -term use, only needs to replace the worn part to restore function, avoids the scrapping of overall structure, and this modular design not only reduces maintenance cost greatly, also reduces the consumption of high -quality steel material.

Description

Technical Field

[0001] This utility model relates to the field of gear ring technology, and in particular to a sealed and anti-detachment high-density power tool gear ring. Background Technology

[0002] The gear ring of a power tool is a core component of the transmission system. It is usually made of metal or high-strength engineering plastic. It transmits power to the working head (such as drill bit, saw blade, etc.) by meshing with the motor shaft or other gears. Its design directly affects the output torque, speed and stability of the tool. It must have wear-resistant and impact-resistant properties. It is commonly found in equipment such as electric drills and angle grinders to ensure efficient and precise power transmission.

[0003] Most existing power tool gear rings are integrally cast during use. With long-term meshing operation, fatigue wear gradually occurs on the tooth surface. When individual teeth are severely damaged, even if the base structure is intact, the entire gear must be scrapped. This situation, where a single tooth damages the entire gear, not only increases maintenance costs but also wastes a large amount of high-quality steel.

[0004] Therefore, to address the problem that existing power tool gear rings, due to their one-piece molding design, require complete scrapping when local teeth wear occurs, resulting in resource waste, a sealed and anti-detachment high-density power tool gear ring can be designed. Utility Model Content

[0005] To overcome the problem that existing power tool gear rings, due to their one-piece molding design, require scrapping the entire unit when local teeth wear, resulting in resource waste.

[0006] The technical solution of this utility model is as follows: a sealed and anti-detachment high-density power tool gear ring, including a fixed ring; it also includes a spline groove. The inner side of the fixed ring is provided with multiple circumferentially distributed spline grooves. A gear ring is provided on the inner side of the fixed ring. A mating block is fixed on the outer side of the gear ring at the position corresponding to the spline groove. The mating block is slidably connected to the spline groove. A first screw hole is provided on the mating block. A second screw hole is provided through the outer side of the fixed ring at the position corresponding to the spline groove. The mating block is fixedly connected to the fixed ring by bolts. A positioning mechanism is provided on the outer side of the fixed ring. A weight reduction mechanism is provided on the fixed ring.

[0007] Preferably, by setting a spline groove and a mating block, the gear ring and the fixed ring can be quickly mated. After mating, the screw is passed through the first screw hole and the second screw hole and screwed into the mating block to fix the gear ring. When the gear ring wears out, it can be replaced by unscrewing the screw, without having to replace the entire structure. This reduces the waste of high-quality metal and solves the problem of existing power tool gear rings being scrapped entirely due to local tooth wear caused by the one-piece molding design, resulting in resource waste.

[0008] Preferably, the positioning mechanism includes an anti-detachment component and a locking component. The anti-detachment component is used to position the toothed ring and the fixing ring, and the locking component is used to position the anti-detachment component.

[0009] Preferably, the anti-detachment component includes an upper pressure cover disposed on the upper side of the fixing ring, a plurality of circumferentially distributed insert plates fixed at the bottom of the upper pressure cover, a lower pressure cover disposed at the bottom of the fixing ring, slots being provided through the lower pressure cover at the positions corresponding to the insert plates, and through grooves being provided through the fixing ring at the positions corresponding to the insert plates, with the insert plates passing through the through grooves and being inserted into the slots.

[0010] Preferably, the locking assembly includes a slot formed on the insert plate, and a locking block is provided inside the slot, the locking block being adapted to the slot.

[0011] Preferably, the weight reduction mechanism includes a hollow component and a support component. The hollow component is used to reduce the weight of the retaining ring, and the support component is used to increase the strength of the retaining ring.

[0012] Preferably, the fixing ring has multiple weight-reducing grooves that run through it, and the weight-reducing grooves are triangular.

[0013] Preferably, the support mechanism includes a support rod disposed inside the weight reduction groove, and the support rod is fixedly connected to the fixing ring.

[0014] The beneficial effects of this utility model are: The separate structure of the gear ring and the fixed ring significantly improves the maintainability and resource utilization of the components. When the gear ring wears out due to long-term use, only the worn parts need to be replaced to restore its function, avoiding the scrapping of the entire structure. This modular design not only greatly reduces maintenance costs but also reduces the consumption of high-quality steel, which is in line with the concept of green manufacturing. At the same time, this solution extends the overall service life of the equipment, reduces downtime for maintenance, and improves production efficiency. In the long run, this replaceable design saves on enterprise operating costs and reduces resource waste, achieving a win-win situation for both economic and environmental benefits. Attached Figure Description

[0015] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model; Figure 2 The diagram shown is a three-dimensional structural schematic of the weight-reducing groove of this utility model; Figure 3 The diagram shown is a three-dimensional structural schematic of the gear ring of this utility model; Figure 4 The diagram shown is a three-dimensional structural schematic of the fixing ring of this utility model; Figure 5 The diagram shown is a three-dimensional structural schematic of the positioning mechanism of this utility model.

[0016] Explanation of reference numerals in the attached drawings: 1. Fixing ring; 2. Spline groove; 3. Gear ring; 4. Connecting block; 5. First screw hole; 6. Second screw hole; 71. Upper pressure cap; 72. Insert plate; 73. Lower pressure cap; 74. Slot; 75. Through groove; 76. Card slot; 81. Weight reduction groove; 82. Support rod. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Please see Figures 1-5 This utility model provides an embodiment of a sealed, anti-detachment high-density power tool gear ring, including a fixed ring 1 and a spline groove 2. The inner side of the fixed ring 1 has multiple circumferentially distributed spline grooves 2. A gear ring 3 is provided on the inner side of the fixed ring 1. A mating block 4 is fixed to the outer side of the gear ring 3 at a position corresponding to the spline groove 2. The mating block 4 is slidably connected to the spline groove 2. A first screw hole 5 is provided on the mating block 4. A second screw hole 6 is provided through the outer side of the fixed ring 1 at a position corresponding to the spline groove 2. The mating block 4 is connected to the fixed ring 1 by bolts. The fixed ring 1 is fixedly connected, and a positioning mechanism is provided on the outer side of the fixed ring 1. A weight reduction mechanism is provided on the fixed ring 1. By adopting the design of spline groove 2 and mating block 4, the gear ring 3 and the fixed ring 1 are quickly positioned and connected. During assembly, the screws are passed through the first screw hole 5 of the gear ring 3 and the second screw hole 6 of the fixed ring 1 in sequence, and finally screwed into the mating block 4 to complete the fastening. When the gear ring 3 is worn, the gear ring 3 can be replaced separately by simply removing the screws, avoiding the scrapping of the entire structure and effectively reducing the loss of high-value metal materials.

[0019] Please see Figures 1-5 In this embodiment, the positioning mechanism includes an anti-detachment component and a locking component. The anti-detachment component is used to position the toothed ring 3 and the fixing ring 1, and the locking component is used to position the anti-detachment component. The anti-detachment component includes an upper pressure cover 71 disposed on the upper side of the fixing ring 1. A plurality of circumferentially distributed insert plates 72 are fixed to the bottom of the upper pressure cover 71. A lower pressure cover 73 is disposed at the bottom of the fixing ring 1. Slots 74 are provided through the lower pressure cover 73 at positions corresponding to the insert plates 72. Through grooves 75 are provided through the fixing ring 1 at positions corresponding to the insert plates 72. The insert plates 72 pass through the through grooves 75 and are inserted into the slots 74. Next, by setting the upper pressure cover 71, after the insert plate 72 on the upper pressure cover 71 mates with the slot 74 of the lower pressure cover 73, the two pressure covers can cover the mating block 4, preventing the mating block 4 from shifting inside the spline groove 2. The locking assembly includes a slot 76 opened on the insert plate 72, and a locking block is set inside the slot 74. The locking block is adapted to the slot 76. By setting the locking block and the slot 76, after the insert plate 72 is inserted into the slot 74, the locking block inside the slot 74 will lock into the slot 76 of the insert plate 72, realizing the mating and fixing of the upper pressure cover 71 and the lower pressure cover 73.

[0020] Please see Figure 4 In this embodiment, the weight reduction mechanism includes a hollow component and a support component. The hollow component is used to reduce the weight of the fixing ring 1, and the support component is used to increase the strength of the fixing ring 1. Multiple weight reduction grooves 81 are provided through the fixing ring 1. The weight reduction grooves 81 are triangular. By setting the weight reduction grooves 81, the overall weight of the fixing ring 1 can be reduced. The triangular weight reduction grooves 81 have high stability and can ensure the strength of the fixing ring 1. The support mechanism includes a support rod 82 set inside the weight reduction groove 81. The support rod 82 is fixedly connected to the fixing ring 1. By setting the support rod 82, it can act as a reinforcing rib and improve the support strength of the weight reduction groove 81.

[0021] When assembling the gear ring 3 and the fixed ring 1, first align the mating block 4 on the outer side of the gear ring 3 and slide it into the spline groove 2 distributed on the inner circumference of the fixed ring 1 to achieve initial positioning and connection. Then, use a bolt to pass through the second screw hole 6 on the outer side of the fixed ring 1 and screw it into the first screw hole 5 on the mating block 4 to fasten the gear ring 3 to the fixed ring 1. When the gear ring 3 is worn and needs to be replaced, simply loosen the bolt to remove the old gear ring 3 and install the new gear ring 3 without replacing the entire component. To prevent the mating block 4 from shifting in the spline groove 2 during operation, a pressure cap 71 is installed above the fixed ring 1 and below. Install the lower pressure cover 73. The insert plate 72 at the bottom of the upper pressure cover 71 passes downward through the through groove 75 of the fixing ring 1 and is inserted into the slot 74 of the lower pressure cover 73, covering the mating block 4 in the internal space. At the same time, the locking block inside the slot 74 will be embedded in the locking groove 76 on the insert plate 72, so that the upper pressure cover 71 and the lower pressure cover 73 are firmly locked together to prevent them from falling off. In addition, multiple triangular weight-reducing grooves 81 are opened on the fixing ring 1 to reduce the weight, and a support rod 82 is fixedly connected in each weight-reducing groove 81 to enhance the support strength and ensure that the overall structure still has sufficient rigidity after weight reduction.

[0022] Through the above steps, the spline groove 2 and the mating block 4 are precisely matched, enabling the gear ring 3 to quickly and accurately mate with the fixed ring 1. During installation, the screws are passed through the first screw hole 5 of the gear ring 3 and the second screw hole 6 of the fixed ring 1 in sequence, and finally screwed into the threaded hole of the mating block 4 to achieve reliable fixation. When the gear ring 3 wears due to long-term use, it can be disassembled and replaced separately by simply loosening the screws, without having to replace the entire fixed ring 1. This modular design not only ensures assembly efficiency but also significantly reduces the consumption of high-quality metal materials. It is particularly suitable for working conditions where the gear ring 3 needs to be replaced frequently, thus solving the problem of existing power tool gear rings being scrapped due to local tooth wear caused by the one-piece molding design, resulting in resource waste.

Claims

1. A sealed, anti-detachment type high-density power tool gear ring, comprising a retaining ring (1); characterized in that: It also includes a spline groove (2), and multiple spline grooves (2) are provided on the inner side of the fixing ring (1) in a circular distribution. A toothed ring (3) is provided on the inner side of the fixing ring (1). A mating block (4) is fixed on the outer side of the toothed ring (3) corresponding to the position of the spline groove (2). The mating block (4) is slidably connected to the spline groove (2). A first screw hole (5) is provided on the mating block (4). A second screw hole (6) is provided on the outer side of the fixing ring (1) corresponding to the position of the spline groove (2). The mating block (4) is fixedly connected to the fixing ring (1) by bolts. A positioning mechanism is provided on the outer side of the fixing ring (1). A weight reduction mechanism is provided on the fixing ring (1).

2. The sealed, anti-detachment high-density power tool gear ring according to claim 1, characterized in that: The positioning mechanism includes an anti-detachment component and a locking component. The anti-detachment component is used to position the toothed ring (3) and the fixing ring (1), and the locking component is used to position the anti-detachment component.

3. The high-density, sealed, anti-detachment power tool gear ring according to claim 2, characterized in that: The anti-detachment component includes an upper pressure cover (71) set on the upper side of the fixing ring (1). Multiple insert plates (72) arranged in a circular pattern are fixed at the bottom of the upper pressure cover (71). A lower pressure cover (73) is set at the bottom of the fixing ring (1). Slots (74) are opened through the lower pressure cover (73) at the positions corresponding to the insert plates (72). Through grooves (75) are opened through the fixing ring (1) at the positions corresponding to the insert plates (72). The insert plates (72) pass through the through grooves (75) and are inserted into the slots (74).

4. The high-density, sealed, anti-detachment power tool gear ring according to claim 3, characterized in that: The locking assembly includes a slot (76) opened on the insert plate (72), and a locking block is provided inside the slot (74), which is adapted to the slot (76).

5. The sealed and anti-detachment high-density power tool gear ring according to claim 1, characterized in that: The weight reduction mechanism includes a hollow component and a support component. The hollow component is used to reduce the weight of the fixing ring (1), and the support component is used to increase the strength of the fixing ring (1).

6. The sealed and anti-detachment high-density power tool gear ring according to claim 5, characterized in that: Multiple weight-reducing grooves (81) are provided through the fixing ring (1), and the weight-reducing grooves (81) are triangular.

7. The sealed and anti-detachment high-density power tool gear ring according to claim 6, characterized in that: The support mechanism includes a support rod (82) installed inside the weight reduction groove (81), and the support rod (82) is fixedly connected to the fixing ring (1).

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