Impact-resistant gear

Abstract

The utility model provides an impact-resistant gear, and belongs to the field of gears. The utility model relates to a novel gear, in particular to a novel gear, which solves the problem that normal use of the gear is affected due to the fact that two gears collide with each other when contacting with each other and gear teeth are possibly fractured as long as the two gears are contacted with each other, and comprises a gear main body and a plurality of teeth positioned on an outer ring of the gear main body and used for meshing. A telescopic matching part is arranged at the front end of the tooth, a rod is arranged between the matching part and the tooth, a spring groove is formed in the tooth, one end of the rod is connected with the matching part, the other end of the rod penetrates into the spring groove, and a limiting clamp which is connected with the rod and has a limiting function is arranged in the spring groove. A spring groove is formed in the tooth, an elastic element used for elastic reset is arranged in the spring groove, side edge parts capable of being folded in the axial direction are arranged on the two sides of the outer wall of the spring groove, a shaft used for connecting the side edge parts and the tooth is arranged between the side edge parts and the tooth, and a spiral spring used for elastic reset is arranged in the shaft.

Description

Technical Field

[0001] The utility model belongs to the field of gears, and particularly relates to an impact-resistant gear. Background Art

[0002] When two gears come into contact with each other, they will collide. Over time, the teeth of the gears may break, affecting the normal use of the gears. Summary of the Invention

[0003] The purpose of the utility model is to provide an impact-resistant gear for the above problems existing in the prior art.

[0004] The purpose of the utility model can be achieved by the following technical solutions: an impact-resistant gear, comprising a gear body and a plurality of teeth located on the outer ring of the gear body for meshing. The feature is that a retractable fitting part is arranged at the front end of the tooth, a rod is arranged between the fitting part and the tooth, a spring groove is opened inside the tooth, one end of the rod is connected with the fitting part, the other end extends into the spring groove, and a limit card which is connected with the rod and has a limiting function is arranged in the spring groove, and an elastic element for elastic reset is arranged in the spring groove;

[0005] Both sides of the outer wall of the spring groove are provided with axially foldable side parts, a shaft for connecting the side parts and the tooth is arranged between the side parts and the tooth, and a spiral spring for elastic reset is arranged inside the shaft.

[0006] In the above-mentioned impact-resistant gear, the two sides of the rear end of the fitting part abut against the front ends of the side parts, and the front end of the outer wall of the spring groove abuts against the rear ends of the side parts.

[0007] In the above-mentioned impact-resistant gear, both sides of the rear end of the fitting part and both sides of the front ends of the side parts are inclined.

[0008] Compared with the prior art, in the process of collision, the fitting part at the front end of the impact-resistant gear will slide inwards briefly and reset through the elastic element, which can reduce the force generated during the collision. Brief Description of the Drawings

[0009] Figure 1 is the main body schematic diagram of the impact-resistant gear;

[0010] Figure 2 is the sectional view and partial view of the impact-resistant gear.

[0011] In the figure, 1, gear body; 2, tooth; 3, fitting part; 4, rod; 5, spring groove; 6, limit card; 7, elastic element; 8, side part; 9, shaft; 10, spiral spring. Detailed Description of the Invention

[0012] The following are specific embodiments of the present utility model and, in conjunction with the accompanying drawings, the technical solutions of the present utility model will be further described. However, the present utility model is not limited to these embodiments.

[0013] As Figure 1 , Figure 2 shown, this impact-resistant gear includes a gear body 1 and a number of teeth 2 located on the outer circle of the gear body 1 for meshing. A telescopic mating portion 3 is provided at the front end of the tooth 2. A rod 4 is provided between the mating portion 3 and the tooth 2. A spring groove 5 is opened inside the tooth 2. One end of the rod 4 is connected to the mating portion 3, and the other end extends into the spring groove 5. A limit card 6 which is connected to the rod 4 and has a limiting function is provided in the spring groove 5. An elastic element 7 for elastic reset is provided in the spring groove 5;

[0014] On both sides of the outer wall of the spring groove 5, side portions 8 that can be axially folded are provided. A shaft 9 for connecting the side portions 8 and the tooth 2 is provided between the side portions 8 and the tooth 2. A helical spring 10 for elastic reset is provided inside the shaft 9.

[0015] The two sides of the rear end of the mating portion 3 are in abutment with the front ends of the side portions 8. The front end of the outer wall of the spring groove 5 is in abutment with the rear ends of the side portions 8. The two sides of the rear end of the mating portion 3 and the two sides of the front ends of the side portions 8 are both inclined.

[0016] If the teeth 2 collide with each other when the two gear bodies 1 come into contact, the mating portion 3 will be pushed inward. During the inward sliding of the mating portion 3, the side portions 8 will be pushed to both sides and folded.

[0017] When the gear bodies 1 rotate to a place where they can cooperate with each other, the mating portion 3 is reset by the elastic element. At the same time, the side portions 8 are reset by the helical spring 10.

[0018] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the technical field to which the present utility model pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

[0019] Although terms such as gear body 1, tooth 2, mating portion 3, rod 4, spring groove 5, limit card 6, elastic element 7, side portion 8, shaft 9, helical spring 10, etc. are used more frequently herein, the possibility of using other terms is not excluded. The use of these terms is only for more conveniently describing and explaining the essence of the present utility model; interpreting them as any additional limitation is contrary to the spirit of the present utility model.

Claims

1. An impact-resistant gear, comprising: A gear body (1) and a plurality of teeth (2) for meshing located on the outer ring of the gear body (1), characterized in that a retractable matching portion (3) is provided at the front end of the tooth (2), a rod (4) is provided between the matching portion (3) and the tooth (2), a spring groove (5) is provided inside the tooth (2), one end of the rod (4) is connected to the matching portion (3), and the other end is inserted into the spring groove (5), and a limit card (6) connected to the rod (4) and having a limiting function is provided in the spring groove (5), and an elastic element (7) for elastic reset is provided in the spring groove (5); Side portions (8) that can be folded in the direction of the axis (9) are arranged on both sides of the outer wall of the spring groove (5); an axis (9) for connecting the side portion (8) and the tooth (2) is arranged between the side portion (8) and the tooth (2); and a coil spring (10) for elastic reset is arranged inside the axis (9).

2. The impact-resistant gear according to claim 1, characterized in that: Both sides of the rear end of the matching portion (3) abut against the front end of the side portion (8), and the front end of the outer wall of the spring groove (5) abuts against the rear end of the side portion (8).

3. The impact-resistant gear according to claim 1, characterized in that: Both sides of the rear end of the matching portion (3) and both sides of the front end of the side portion (8) are arranged at an incline.

Images