Silent transmission gear with built-in damping structure

Abstract

The utility model provides mute transmission gear of built -in damping structure, the utility model relates to gear technical field, including tooth disc, tooth disc is formed with tooth groove part in the through, and tooth groove part is internal tooth groove structure, tooth disc is respectively butt jointed with gear shaft and bearing disc to be provided with in the both ends of tooth groove part, bearing disc and tooth groove part are embedded and match, and the recess and protrusion butt joint part that is matched is formed axially between bearing disc and gear shaft, the utility model has the beneficial effect that: bearing disc structure is set up axially on the basis of tooth disc structure, and the internal tooth engagement of cooperation internal tooth groove part is used to make the limit of gear shaft structure's inside diameter axial, and the filling ring formed in it is used with the adapter seat to improve the axial butt joint precision, when the gear structure is impacted or axial brake vibration transmission under external force, can through its filling ring and the limit structure to synchronous offset the vibration amount of butt joint end, and then realize the mute processing of gear transmission, improved the practicality of this transmission gear.

Description

Technical Field

[0001] This utility model relates to the field of gear technology, and more specifically, to a silent transmission gear with a built-in vibration damping structure. Background Technology

[0002] Transmission gears are key components in mechanical systems that transmit power and motion. They rely on the precise meshing between teeth to drive the driven gear to rotate, thereby efficiently changing the speed, torque or direction of motion. They are widely used in various applications that require precise and reliable transmission, such as automotive gearboxes, industrial machinery, and watches.

[0003] In existing technologies, in industrial applications such as automotive gearboxes and precision instruments that require quiet environments and precision transmission, there are certain requirements for the quiet performance of gear transmissions. Traditional gears, due to discontinuous contact of tooth surfaces and friction and rigid wear during use, are prone to significant braking noise when affected by external forces during transmission. Utility Model Content

[0004] The technical problem to be solved by this utility model is that existing transmission gears are prone to generating large noise during transmission. In order to address the above problem, a silent transmission gear with a built-in vibration damping structure is provided.

[0005] The purpose and effect of this utility model are achieved by the following specific technical means: including a toothed disc, wherein a toothed groove is formed through the toothed disc, and the toothed groove is an internal toothed groove structure;

[0006] The toothed disc has a toothed shaft and a bearing disc respectively connected at both ends of the toothed groove. The bearing disc is fitted and matched with the toothed groove. A matching concave-convex mating part is formed axially between the bearing disc and the toothed shaft.

[0007] The tooth groove and the tooth shaft are axially connected by an adapter seat;

[0008] A filling ring is provided at the inner edge between the toothed portion and the bearing disc.

[0009] A further preferred embodiment: both the outer teeth of the gear disc and the inner teeth of the tooth groove are chamfered.

[0010] A further preferred embodiment: the mating end of the adapter and the gear shaft is a meshing radial limiting structure.

[0011] A further preferred embodiment: an axially limiting stepped surface is formed between the outer end of the bearing disc and the gear disc, and the filler ring is a silicone rubber ring.

[0012] A further preferred embodiment: a shaft joint rod is provided through one end of the gear shaft relative to the gear disk, an axial convex groove is provided between the shaft joint rod and the gear shaft, and a connecting rod shaft is inserted into the inner end of the shaft joint rod at the concave-convex mating end of the gear shaft and the bearing disk.

[0013] A further preferred embodiment: a damping block is fixedly installed between the inner end of the shaft joint and the connecting rod shaft.

[0014] The beneficial effects of this utility model are:

[0015] This type of silent transmission gear, based on a gear disc structure, uses an axially connected bearing disc structure to mesh with the internal teeth of the internal tooth groove to limit the axial diameter of the gear shaft structure. The filling ring formed by the filling and the adapter seat are used to improve the axial connection accuracy. When the gear structure is subjected to external impact or axial braking vibration transmission, the vibration at the docking end can be synchronously offset by its filling ring and limiting structure, thereby achieving silent treatment of the gear transmission and improving the practicality of the transmission gear. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

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

[0018] Figure 2 This is a schematic diagram of the internal planar structure of the toothed disc of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal planar structure of the gear shaft of this utility model.

[0020] Figures 1-3 In the middle: 1. Gear disc, 2. Gear shaft, 3. Shaft joint rod, 4. Bearing disc, 5. Gear groove, 6. Filler ring, 7. Adapter seat, 8. Protruding shank groove, 9. Connecting rod shaft, 10. Damping block. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the following description is provided in conjunction with the accompanying drawings. Figures 1-3 The present invention will be further described in detail below with specific embodiments. The following embodiments are merely examples for implementing the present invention. It must be noted that the disclosed embodiments do not limit the scope of the present invention. On the contrary, any modifications and refinements made without departing from the scope of the present invention are within the patent protection scope of the present invention.

[0022] The silent transmission gear with built-in vibration damping structure includes a gear disk 1, in which a tooth groove 5 is formed through, and the tooth groove 5 is an internal tooth groove structure.

[0023] The toothed disc 1 has a toothed shaft 2 and a bearing disc 4 respectively connected at both ends of the toothed groove portion 5. The bearing disc 4 is fitted and matched with the toothed groove portion 5, and a matching concave-convex mating portion is formed axially between the bearing disc 4 and the toothed shaft 2.

[0024] A fitting seat 7 is provided for axial connection between the toothed groove 5 and the toothed shaft 2.

[0025] A filling ring 6 is provided between the inner edge of the toothed portion 5 and the bearing disk 4;

[0026] The transmission gear uses a gear disk 1 as its main body. Its structure includes a tooth groove 5 on the inner side of the gear section. This tooth groove 5 engages with the gear shaft 2 and bearing disk 4 via an internal tooth structure. Figure 2 As shown, the tooth groove 5 and the bearing disk 4 are axially connected and filled with a filling ring 6 at the connection end to axially limit the linkage end of the tooth disk 1 and the tooth shaft 2. When the tooth shaft 2 and the tooth disk 1 are in motion, the axial vibration will first compress the filling ring 6. The deformation of the filling ring 6 will offset the vibration during the transmission. At the same time, the connection between the inner teeth of the tooth groove 5 and the bearing disk 4, and the concave-convex connection between the bearing disk 4 and the tooth shaft 2, will coaxially limit the axial structure at both the inner and outer ends, so as to improve the transmission accuracy of the tooth shaft 2 and the tooth disk 1, and provide buffer damping for the axial rotation of the entire gear structure to ensure the stability and quietness of the gear transmission.

[0027] Based on the above, a shaft joint rod 3 is provided through one end of the gear shaft 2 relative to the gear disk 1. An axial convex groove 8 is provided between the shaft joint rod 3 and the gear shaft 2. A connecting rod shaft 9 is inserted into the inner end of the shaft joint rod 3 at the concave-convex mating end of the gear shaft 2 and the bearing disk 4. The gear shaft 2 further extends the axial connection distance of the gear disk 1 through the shaft joint rod 3, which is coaxially extended, and the convex groove 8 ensures the axial transmission effect when the gear shaft 2 and the shaft joint rod 3 are mated. The connecting rod shaft 9 further connects the inner end of the gear shaft 2 and the inner end of the shaft joint rod 3 axially, ensuring the stability of the mating structure between the shaft joint rod 3 and the gear shaft 2, and avoiding the impact of loosening of the mating structure on the vibration transmission of the entire gear structure.

[0028] Furthermore, a damping block 10 is fixedly installed between the inner end of the shaft joint 3 and the connecting rod shaft 9, such as... Figure 3 As shown, the damping block 10 with filling is used to provide an axial buffer structure for the connection end of the shaft joint 3 and the connecting rod shaft 9. The deformation of the damping block 10 provides damping for the axial vibration of the connecting rod shaft 9, and prevents the axial vibration from being transmitted along the connecting rod shaft 9 to the concave and convex mating end of the gear shaft 2 and the bearing disc 4.

[0029] Furthermore, both the outer teeth and the inner teeth of the tooth groove of the tooth disk 1 are chamfered. The chamfered ends facilitate the insertion of the inner and outer teeth of the tooth disk 1 into the tooth shaft 2 and the mating insertion between the tooth disk 1 and the gear teeth.

[0030] Furthermore, the mating end of the adapter seat 7 and the gear shaft 2 is a radially limiting structure that meshes with each other. The adapter seat 7 further meshes with the gear shaft 2 to cooperate with the internal teeth of the tooth groove 5 to complete the radial limiting of the gear shaft 2, thereby further improving the tightness of the mating end between the gear shaft 2 and the gear disk 1.

[0031] Furthermore, an axially limiting stepped surface is formed between the outer end of the bearing disc 4 and the gear disc 1. The filler ring 6 is a silicone rubber ring. The outer end of the bearing disc 4 is axially limited by the formed stepped surface. When subjected to axial vibration, the filler ring 6 can deform under pressure from one end of the gear shaft 2, and the structural characteristics of the filler ring 6 are used to counteract the vibration. Detailed implementation method:

[0033] The transmission gear has a gear disk 1 as the gear body. The tooth groove 5 is connected to the gear shaft 2 and bearing disk 4 through the internal tooth structure. The tooth groove 5 and bearing disk 4 are axially connected and filled with a filling ring 6 at the connection end to axially limit the linkage end of the gear disk 1 and the gear shaft 2. When the gear shaft 2 and gear disk 1 are in transmission, the axial vibration will first compress the filling ring 6, and the deformation of the filling ring 6 will be used to offset the vibration during transmission.

[0034] At the same time, the mating of the inner teeth of the toothed groove 5 with the bearing disk 4, and the concave-convex mating of the bearing disk 4 with the toothed shaft 2, are used to limit the coaxiality of the axial structure at both the inner and outer ends.

[0035] When set up, the gear shaft 2 serves as the axial connection end of the gear disk 1 structure, and the gear disk 1's external teeth are used to mesh and connect with other transmission gears.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A silent transmission gear with a built-in vibration damping structure, characterized in that: Includes a toothed disc (1), wherein a toothed groove (5) is formed through the toothed disc (1), and the toothed groove (5) is an internal toothed groove structure; The toothed disc (1) has a toothed shaft (2) and a bearing disc (4) respectively connected at both ends of the toothed groove (5). The bearing disc (4) is fitted and matched with the toothed groove (5). A matching concave-convex mating part is formed between the bearing disc (4) and the toothed shaft (2) in the axial direction. The toothed portion (5) and the toothed shaft (2) are axially connected by an adapter seat (7); A filling ring (6) is provided between the inner edge of the toothed portion (5) and the bearing disk (4).

2. The silent transmission gear with built-in vibration damping structure according to claim 1, characterized in that: The outer teeth and inner teeth of the toothed disc (1) are both chamfered.

3. The silent transmission gear with built-in vibration damping structure according to claim 1, characterized in that: The mating end of the adapter (7) and the gear shaft (2) is a radially limiting structure that meshes with each other.

4. The silent transmission gear with built-in vibration damping structure according to claim 1, characterized in that: An axially limiting stepped surface is formed between the outer end of the bearing disc (4) and the gear disc (1), and the filling ring (6) is a silicone rubber ring.

5. The silent transmission gear with built-in vibration damping structure according to claim 1, characterized in that: A shaft joint rod (3) is provided through one end of the gear shaft (2) relative to the gear disc (1). An axial convex groove (8) is provided between the shaft joint rod (3) and the gear shaft (2). A connecting rod shaft (9) is inserted into the inner end of the shaft joint rod (3) at the concave-convex mating end of the gear shaft (2) and the bearing disc (4).

6. The silent transmission gear with built-in vibration damping structure according to claim 5, characterized in that: A damping block (10) is fixedly installed between the inner end of the shaft joint (3) and the connecting rod shaft (9).

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