Low-noise transmission gear

Abstract

The utility model relates to the technical field of transmission gears, in particular to a low-noise transmission gear which is characterized in that an assembly hole is formed in the middle of a transmission gear body, a groove is formed in the peripheral side of the assembly hole, flow guide grooves communicated with the groove are formed in the upper end and the lower end of a convex tooth respectively, a plurality of cooling fins are arranged in the groove, and the cooling fins are arranged in the groove. The cooling fins are of a trapezoidal structure, lubricating oil is added into the grooves, the lubricating oil can flow into the flow guide grooves under the influence of centrifugal force along with rotation of the transmission gear body, and therefore the lubricating oil flows to the convex teeth, when the lubricating oil is added into the transmission gear body, the lubricating oil can be evenly distributed at the positions of the convex teeth, and therefore the lubricating oil can be evenly distributed. The friction of the transmission gear body during rotation can be reduced, so that the noise of the transmission gear body during use can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission gears, in particular to a low-noise transmission gear. Background Art

[0002] As we all know, transmission gears are one type of transmission accessories of hardware accessories, and they play a very important role in the field of transmission. They are connected to the transmission shaft, driven by the transmission shaft to rotate, and then the transmission energy of the transmission shaft is transmitted to the next gear wheel through gears.

[0003] When the existing transmission gear is used horizontally, its structure is simple. When lubricating oil is added to it, the lubricating oil cannot be evenly distributed on each convex tooth, which will cause greater friction during operation of the transmission gear, thereby increasing the noise of the transmission gear during use. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies of the prior art, the utility model provides a low-noise transmission gear.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-noise transmission gear, comprising a transmission gear body, a plurality of convex teeth are arranged on the circumferential side of the transmission gear body, an assembly hole is arranged on the middle part of the transmission gear body, a groove is arranged on the circumferential side of the assembly hole, the upper and lower ends of the convex teeth are respectively provided with guide grooves connected to the grooves, a plurality of heat sinks are arranged inside the grooves, and the heat sinks are of a trapezoidal structure.

[0008] Furthermore, the present invention is improved in that the depth of the guide groove is greater than the depth of the groove.

[0009] Furthermore, the utility model has the following improvements: the guide groove is a U-shaped structure.

[0010] In order to increase the service life of the structure, the utility model has the following improvements: a plurality of protective blocks located around the assembly hole are provided at both ends of the assembly hole.

[0011] Furthermore, the present invention is improved in that the bottom end of the heat sink does not contact the bottom of the groove.

[0012] Furthermore, the present invention is improved in that a plurality of heat dissipation grooves are provided on both sides of the heat sink.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a low-noise transmission gear having the following features:

[0015] Beneficial effects:

[0016] The low-noise transmission gear has lubricating oil added into the groove. As the transmission gear body rotates, the lubricating oil is affected by centrifugal force and flows into each guide groove, thereby flowing onto each convex tooth. When the lubricating oil is added to the transmission gear body, the lubricating oil is evenly distributed on each convex tooth, which can reduce the friction of the transmission gear body during rotation, thereby reducing the noise of the transmission gear body during use. During the rotation of the transmission gear body, the heat dissipation of the transmission gear body can be accelerated through the heat sink. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0019] Figure 3 For this utility model Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0020] In the figure: 1. Transmission gear body; 2. Protruding teeth; 3. Assembly holes; 4. Grooves; 5. Guide grooves; 6. Heat sinks; 7. Protective blocks. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-3The utility model is a low-noise transmission gear, comprising a transmission gear body 1, a plurality of convex teeth 2 are arranged on the peripheral side of the transmission gear body 1, a mounting hole 3 is arranged in the middle part of the transmission gear body 1, a groove 4 is arranged on the peripheral side of the mounting hole 3, the upper end and the lower end of the convex tooth 2 are respectively provided with a guide groove 5 connected with the groove 4, and a plurality of heat sinks 6 are arranged inside the groove 4, and the heat sink 6 is a trapezoidal structure. In this structure, a designated transmission shaft passes through the mounting hole 3, so that the transmission gear body 1 is interference-fitted on the transmission shaft, so that the transmission gear body 1 can be firmly installed on the transmission shaft, and the transmission shaft can drive the transmission gear body 1 to rotate horizontally, thereby driving the designated driven wheel to rotate. When the transmission gear needs to be adjusted, When lubricating oil is added to the main body 1, the lubricating oil is added to the groove 4. As the transmission gear body 1 rotates, the lubricating oil is affected by the centrifugal force and flows into each guide groove 5, and then flows to each convex tooth 2. When lubricating oil is added to the transmission gear body 1, the lubricating oil is evenly distributed on each convex tooth 2, which can reduce the friction of the transmission gear body 1 during rotation, thereby reducing the noise of the transmission gear body 1 during use. During the rotation of the transmission gear body 1, the heat dissipation of the transmission gear body 1 can be accelerated through the heat sink 6. Since the heat sink 6 is a trapezoidal structure, the air flow speed at the transmission gear body 1 can be accelerated during the rotation of the heat sink 6, which can further improve the heat dissipation effect of the transmission gear body 1 itself.

[0023] Furthermore, the depth of the guide groove 5 is greater than the depth of the groove 4 , which enables the lubricating oil in the groove 4 to flow into the interior of the guide groove 5 more easily.

[0024] Furthermore, the guide groove 5 can be a U-shaped structure.

[0025] When the transmission gear body 1 needs to be assembled, the transmission gear body 1 needs to be knocked. Both ends of the assembly hole 3 are provided with a plurality of protective blocks 7 located around the assembly hole 3. By providing the protective blocks 7, when the transmission gear body 1 is assembled, it can prevent the tool from knocking on the heat sink 6, which can increase the service life of the transmission gear body 1.

[0026] Furthermore, the bottom end of the heat sink 6 will not contact the bottom of the groove 4 , so that the lubricating oil in the groove 4 will not be blocked by the heat sink 6 .

[0027] In this structure, a plurality of heat dissipation grooves are provided on both sides of the heat sink 6, which can further improve the heat dissipation effect of the heat sink 6 itself.

[0028] 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. A low-noise transmission gear, comprising a transmission gear body (1), wherein a plurality of convex teeth (2) are provided on the circumference of the transmission gear body (1), and wherein: The middle part of the transmission gear body (1) is provided with an assembly hole (3), the peripheral side of the assembly hole (3) is provided with a groove (4), the upper end and the lower end of the convex tooth (2) are respectively provided with a guide groove (5) connected to the groove (4), and the interior of the groove (4) is provided with a plurality of heat sinks (6), and the heat sinks (6) are of a trapezoidal structure.

2. A low-noise transmission gear according to claim 1, characterized in that: The depth of the guide groove (5) is greater than the depth of the groove (4).

3. A low-noise transmission gear according to claim 2, characterized in that: The guide groove (5) is a U-shaped structure.

4. A low-noise transmission gear according to claim 3, characterized in that: A plurality of protective blocks (7) located around the assembly hole (3) are provided at both ends of the assembly hole (3).

5. A low-noise transmission gear according to claim 4, characterized in that: The bottom end of the heat sink (6) will not contact the bottom of the groove (4).

6. A low-noise transmission gear according to claim 5, characterized in that: A plurality of heat dissipation grooves are provided on both sides of the heat dissipation fin (6).

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