Noise reduction type gearbox
By adopting the design of detachable lower box and upper box in the gear box, the combined structure of elastic frame, flexible frame, elastic ring and elastic pad is used to solve the noise problem caused by the gap between the upper box and the lower box. , significantly improves the noise reduction effect.
Patent Information
- Application Number
- CN202421328827.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-06-12
AI Technical Summary
There may be gaps in existing gear boxes when the upper box and the lower box are combined, resulting in noise generated when shaking, and the noise reduction effect is poor.
A structure including a removable lower box and an upper box is designed, using mounting grooves, elastic frames, flexible frames, sound insulation layers, connecting plates, fixing plates, elastic rings and elastic pads, through the elastic frames and flexible frames. Squeeze and filling of elastic rings and elastic pads reduce gaps and reduce collision noise.
It effectively reduces the noise generation of the gearbox when it shakes, improves the noise reduction effect, and prevents collision noise caused by gaps.
Smart Images
Figure CN222296923U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gear boxes, in particular to a noise reduction gear box. Background Art
[0002] Gearbox, commonly known as transmission or reducer, is a core component in mechanical engineering. It changes the speed and torque of the input shaft to different parameters of the output shaft through a set of meshing gears. This device is extremely critical in many mechanical systems, such as automobiles, industrial machinery, conveying equipment, etc. Gearboxes used in baby strollers are usually designed to be more compact and lightweight, taking into account the use environment and safety requirements of baby strollers.
[0003] According to the Chinese patent with announcement number: CN206860836U, a noise reduction gearbox includes a gearbox body, which is composed of an upper box body and a lower box body, first side panels are provided on both sides of the upper box body, second side panels are provided on both sides of the lower box body, screw holes are provided on the surfaces of the first side panels and the second side panels, cavities are provided inside the upper box body and the lower box body, sound insulation panels are provided on the inner wall of the gearbox body, and sound-absorbing cotton is provided inside the sound insulation panels.
[0004] In the above scheme, the gear box body is composed of an upper box body and a lower box body, which leads to the following disadvantages: there may be a certain gap between the upper box body and the lower box body when they are assembled, which may cause the upper box body and the lower box body to collide with each other when the gear box is shaken, generating noise, and the noise reduction effect is poor. Utility Model Content
[0005] The purpose of the utility model is to provide a noise-reducing gear box to solve the problem that there may be a certain gap between the upper box body and the lower box body when they are assembled, which may cause the upper box body and the lower box body to collide with each other when the gear box is shaken, generating noise and resulting in poor noise reduction effect.
[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical scheme: a noise reduction gear box, including a lower box body, which is detachably arranged below the upper box body, the top surface of the lower box body is provided with a mounting groove, the bottom surface of the upper box body is fixed with a mounting frame, the mounting groove and the mounting frame are slidably arranged, an elastic frame is fixed inside the mounting groove, a flexible frame is fixed on the top surface of the lower box body, and sound insulation layers are fixed inside the lower box body and the upper box body.
[0007] Preferably, main rotation holes are fixed on both sides of the lower box body and the upper box body, and two secondary rotation holes are opened on both sides of the lower box body and the upper box body.
[0008] Preferably, fixing plates are fixed on both sides of the lower box body, and connecting plates are fixed on both sides of the upper box body. Several connecting holes are opened on the top surface of the connecting plate, and several fixing holes are opened on the top surface of the fixing plate. Fixing bolts are rotatably inserted inside the connecting holes, one end of the fixing bolt passes through the connecting hole and is rotatably inserted with the fixing hole, and a fixing nut is threadedly connected to the fixing bolt.
[0009] Preferably, elastic rings are fixed to the inner wall surfaces of the connecting hole and the fixing hole respectively, and the elastic rings are rotatably inserted with the fixing bolts.
[0010] Preferably, two elastic pads are fixed to the top surfaces of the two fixing plates.
[0011] Preferably, the inner bottom surface of the lower box body and the top surface of the upper box body are both provided with a plurality of heat dissipation holes.
[0012] Compared with the prior art, a noise reduction gearbox adopting the above technical solution has the following beneficial effects:
[0013] 1. After the lower box and the upper box are assembled and used, the installation frame is inside the installation groove. Since an elastic frame is fixed inside the installation groove, the installation frame will be pressed on the elastic frame. In addition, when the lower box and the upper box are assembled together, the lower box and the upper box will press the flexible frame upward and downward respectively. Therefore, when the lower box and the upper box shake up and down under external force, the lower box and the upper box will impact on the flexible frame, and the installation frame will also impact on the elastic frame, reducing the noise generated when the lower box and the upper box shake up and down;
[0014] 2. When assembling the lower box body and the upper box body together, the connecting plate and the fixing plate will be close to each other, and then the staff will insert the fixing bolt into the connecting hole and pass it through the fixing hole, and then screw on the fixing nut. As the fixing nut is screwed in, the connecting plate and the fixing plate can be squeezed and fixed to each other. Since the elastic ring fills the gaps between the fixing bolts, the connecting hole and the fixing hole, and the elastic pad fills the gaps between the connecting plate and the fixing plate, it can prevent the gear box from generating collision noise due to these gaps when shaking. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional schematic diagram of an embodiment.
[0016] Figure 2 It is an exploded perspective schematic diagram of an embodiment.
[0017] Figure 3 It is a schematic diagram of the explosion of the connecting plate and the fixing plate in the embodiment.
[0018] Figure 4 for Figure 2A schematic diagram of the enlarged local structure in the middle.
[0019] In the figure: 1. lower box body; 2. upper box body; 3. mounting groove; 4. elastic frame; 5. flexible frame; 6. mounting frame; 7. sound insulation layer; 8. connecting plate; 9. fixing plate; 10. connecting hole; 11. fixing hole; 12. fixing bolt; 13. fixing nut; 14. elastic ring; 15. elastic pad; 16. heat dissipation hole; 17. main rotation hole; 18. secondary rotation hole. DETAILED DESCRIPTION
[0020] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.
[0021] like Figure 1-Figure 3 As shown, a noise reduction gearbox includes a lower box body 1, which is detachably arranged below an upper box body 2, a mounting groove 3 is provided on the top surface of the lower box body 1, a mounting frame 6 is fixed to the bottom surface of the upper box body 2, the mounting groove 3 and the mounting frame 6 are slidably arranged, an elastic frame 4 is fixed inside the mounting groove 3, a flexible frame 5 is fixed on the top surface of the lower box body 1, sound insulation layers 7 are fixed inside the lower box body 1 and the upper box body 2, main rotation holes 17 are fixed on both sides of the lower box body 1 and the upper box body 2, and two secondary rotation holes 18 are provided on both sides of the lower box body 1 and the upper box body 2.
[0022] During use, after the lower box body 1 and the upper box body 2 are assembled and used, the installation frame 6 is located inside the installation groove 3. Since the elastic frame 4 is fixed inside the installation groove 3, the installation frame 6 will be squeezed on the elastic frame 4. In addition, when the lower box body 1 and the upper box body 2 are assembled together, the lower box body 1 and the upper box body 2 will squeeze the flexible frame 5 upward and downward respectively. Therefore, when the lower box body 1 and the upper box body 2 are shaken up and down by external force, the lower box body 1 and the upper box body 2 will impact on the flexible frame 5, and the installation frame 6 will also impact on the elastic frame 4, thereby reducing the noise generated when the lower box body 1 and the upper box body 2 shake up and down.
[0023] like Figure 1 and Figure 3 As shown, fixing plates 9 are fixed on both sides of the lower box body 1, and connecting plates 8 are fixed on both sides of the upper box body 2. A plurality of connecting holes 10 are opened on the top surface of the connecting plate 8, and a plurality of fixing holes 11 are opened on the top surface of the fixing plate 9. A fixing bolt 12 is rotatably inserted inside the connecting hole 10. One end of the fixing bolt 12 passes through the connecting hole 10 and is rotatably inserted with the fixing hole 11. A fixing nut 13 is threadedly connected to the fixing bolt 12. Elastic rings 14 are fixed on the inner wall surfaces of the connecting hole 10 and the fixing hole 11, respectively. The elastic ring 14 is rotatably inserted with the fixing bolt 12, and two elastic pads 15 are fixed to the top surfaces of the two fixing plates 9.
[0024] During use, when the lower box body 1 and the upper box body 2 are assembled together, the connecting plate 8 and the fixing plate 9 will be close to each other, and then the staff will insert the fixing bolt 12 into the connecting hole 10 and pass it through the fixing hole 11, and then screw on the fixing nut 13. As the fixing nut 13 is screwed in, the connecting plate 8 and the fixing plate 9 can be squeezed and fixed to each other. Since the elastic ring 14 fills the gaps between the fixing bolt 12, the connecting hole 10 and the fixing hole 11, and the elastic pad 15 fills the gaps between the connecting plate 8 and the fixing plate 9, it can prevent the gear box from generating collision noise due to these gaps when shaking.
[0025] like Figure 2 As shown, a plurality of heat dissipation holes 16 are provided on the inner bottom surface of the lower box body 1 and the top surface of the upper box body 2 .
[0026] During use, the gear box will rotate rapidly due to the rotating shaft, driving the gears to rotate synchronously and rapidly, which will increase the temperature of the rotating shaft and the gears. As the heat increases, the heat will be discharged through the heat dissipation holes 16 to reduce the temperature in the gear box.
[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A noise reduction gearbox, comprising a lower housing (1), wherein the lower housing (1) is detachably arranged below an upper housing (2), and characterized in that: The top surface of the lower box (1) is provided with a mounting groove (3), the bottom surface of the upper box (2) is fixed with a mounting frame (6), the mounting groove (3) and the mounting frame (6) are slidably arranged, an elastic frame (4) is fixed inside the mounting groove (3), a flexible frame (5) is fixed on the top surface of the lower box (1), and sound insulation layers (7) are fixed inside the lower box (1) and the upper box (2).
2. A noise reduction gearbox according to claim 1, characterized in that: Main rotation holes (17) are fixed on both sides of the lower box body (1) and the upper box body (2), and two secondary rotation holes (18) are opened on both sides of the lower box body (1) and the upper box body (2).
3. A noise reduction gearbox according to claim 1, characterized in that: The lower box body (1) is respectively fixed with a fixing plate (9) on both sides, and the upper box body (2) is respectively fixed with a connecting plate (8), the top surface of the connecting plate (8) is provided with a plurality of connecting holes (10), the top surface of the fixing plate (9) is provided with a plurality of fixing holes (11), a fixing bolt (12) is rotatably inserted inside the connecting hole (10), one end of the fixing bolt (12) passes through the connecting hole (10) and is rotatably inserted with the fixing hole (11), and a fixing nut (13) is threadedly connected to the fixing bolt (12).
4. A noise reduction gearbox according to claim 3, characterized in that: Elastic rings (14) are respectively fixed to the inner wall surfaces of the connecting hole (10) and the fixing hole (11), and the elastic ring (14) and the fixing bolt (12) are rotatably inserted.
5. A noise reduction gearbox according to claim 3, characterized in that: Two elastic pads (15) are fixed on the top surfaces of the two fixing plates (9).
6. A noise reduction gearbox according to claim 1, characterized in that: The inner bottom surface of the lower box body (1) and the top surface of the upper box body (2) are both provided with a plurality of heat dissipation holes (16).