A noise-reducing gearbox for a coffee machine and the coffee machine itself.

Abstract

This utility model provides a noise-reducing gearbox for a coffee machine and a coffee machine in general. The gearbox includes a housing, a cover, a gear set, and a drive motor. The gear set is assembled in the housing, and the drive motor is mounted on the housing and connected to the gear set for transmission. The housing has a first sidewall and a second sidewall, which are distributed internally and externally, forming a sound-insulating cavity between them. The cover is connected to the housing to seal it. By changing the sidewalls of the housing to spaced-apart first and second sidewalls, a sound-insulating cavity is formed between the first and second sidewalls. This cavity blocks and reduces the noise transmission during gear set operation, thereby reducing the noise of the gearbox during operation.

Description

Technical Field

[0001] This utility model relates to the field of coffee machines, and more particularly to a noise-reducing gearbox for a coffee machine and a coffee machine. Background Technology

[0002] With the increasing popularity of coffee culture in my country, more and more coffee shops are opening, leading to rapid development in the coffee machine manufacturing industry. Currently, coffee machines on the market typically have functions such as grinding, extraction, and frothing. During the grinding process, the gearbox driving the grinding components generates noticeable noise, affecting the user experience.

[0003] Therefore, it is necessary to make further improvements. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this invention is to propose a noise-reducing gearbox for a coffee machine and a coffee machine in general. By improving the structure of the gearbox, the noise problem is solved.

[0005] To achieve the above objectives, this utility model provides a noise-reducing gearbox for a coffee machine, which includes a housing, a cover, a gear set, and a drive motor. The gear set is assembled in the housing, and the drive motor is mounted on the housing and connected to the gear set for transmission. The housing has a first side wall and a second side wall, which are distributed inside and outside the housing. A sound insulation cavity is formed between the first side wall and the second side wall. The cover is connected to the housing to seal the housing.

[0006] In one or more embodiments, the upper end face of the first sidewall is provided with a groove, the groove is distributed along the upper end face of the first sidewall, and the cover is provided with a rib connected to the groove.

[0007] In one or more embodiments, the depth of the groove is at least 1 mm.

[0008] In one or more embodiments, the cover is connected and fixed to the housing by a plurality of first screws.

[0009] In one or more embodiments, the sound insulation cavity is provided with a first screw hole for connection of a first screw.

[0010] In one or more embodiments, the housing is provided with a cover sleeve, at least a portion of the drive motor is embedded in the cover sleeve, and the cover sleeve is provided with a second screw for connecting and fixing the drive motor.

[0011] In one or more embodiments, the housing is provided with an adjustable pitch motor, an external gear, an internal gear, an adjustable pitch seat, an external cutter head, and an internal cutter head. The adjustable pitch motor drives the external gear to rotate through a drive gear. The external gear meshes with the internal gear. The internal gear has an internal thread structure. The adjustable pitch seat has an external thread structure that mates with the internal thread structure. The external cutter head is arranged around the internal cutter head and is fixed on the adjustable pitch seat.

[0012] This utility model also provides a coffee machine that has the noise-reducing gearbox described above.

[0013] Compared with the prior art, the present invention has the following advantages: by changing the side wall of the housing into a first side wall and a second side wall that are spaced apart, a sound insulation cavity is formed between the first side wall and the second side wall. The sound insulation cavity is used to block and reduce the noise transmission when the gear set is working, thereby reducing the noise when the gearbox is working. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the cover after it has been removed from the shell in this embodiment;

[0015] Figure 2 for Figure 1 A structural diagram from another angle;

[0016] Figure 3 This is a cross-sectional view through the central axis of the outer cutter head in this embodiment;

[0017] Figure 4 This is a schematic diagram of the external gear, internal gear, and adjustable pitch seat of this embodiment. Detailed Implementation

[0018] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0019] See appendix Figure 1-2 This application provides a noise-reducing gearbox for a coffee machine, which includes a housing 1, a cover 2, a gear set 3, and a drive motor 4. The gear set 3 is assembled in the housing 1, and the drive motor 4 is mounted on the housing 1 and connected to the gear set 3 for transmission. The housing 1 has a first side wall 5 and a second side wall 6, which are distributed inside and outside the housing. A sound insulation cavity 7 is formed between the first side wall 5 and the second side wall 6. The width of the sound insulation cavity is at least 5 mm. The sound insulation cavity can play a role in sound insulation. The noise generated by the operation of the gear set is reduced after passing through the sound insulation cavity. The cover 2 is connected to the housing 1 to seal the housing 1.

[0020] The upper surface of the first sidewall 5 is provided with a groove 8, which is distributed along the upper surface of the first sidewall 5. The cover 2 is provided with a rib 9 connected to the groove 8. The connection between the groove and the rib can improve the structural tightness after the cover and the shell are connected, and facilitate the transmission of noise outward. Specifically, the depth of the groove 8 is at least 1 mm, which improves the tightness of the connection between the cover and the shell and achieves sound insulation and waterproofing effects.

[0021] The cover 2 is connected and fixed to the housing 1 by multiple first screws 10. The use of first screws for installation and fixation has the advantages of easy installation and disassembly. The sound insulation cavity 7 is provided with first screw holes 11 for the connection of the first screws 10. Setting the first screw holes in the sound insulation cavity can make full use of the space of the sound insulation cavity and avoid setting the first screw holes on the outside.

[0022] The housing 1 is provided with a cover sleeve 12, and at least a portion of the drive motor 4 is embedded in the cover sleeve 12. The cover sleeve 12 is provided with a second screw 13 for connecting and fixing the drive motor 4. The shaft output end of the drive motor is connected to the cover sleeve and then fixed by the second screw. Compared with the traditional method of directly fixing with screws, the stability of the drive motor after installation is better.

[0023] See appendix Figure 3-4 The housing is equipped with an adjustable pitch motor 14, an external gear 16, an internal gear 17, an adjustable pitch seat 18, an external cutter head 15, and an internal cutter head. The adjustable pitch motor 14 drives the external gear 16 to rotate via a drive gear 19. The external gear 16 meshes with the internal gear 17. The internal gear 17 has an internal thread structure 20. The adjustable pitch seat 18 has an external thread structure 21 that mates with the internal thread structure. The external cutter head 15 is arranged around the internal cutter head and is fixed to the adjustable pitch seat 18. The adjustable pitch motor drives the drive gear 19 to rotate, thereby driving the external gear to rotate. Since the internal gear 17 meshes with the external gear 16, the internal gear will also rotate. With the cooperation of the external thread structure and the internal thread structure, the adjustable pitch seat will move up and down, thereby causing the external cutter head to move up and down. The grinding area formed between the external cutter head and the internal cutter head will also increase or decrease accordingly, thereby adjusting the coarseness of the coffee powder.

[0024] This application also provides a coffee machine having the noise-reducing gearbox described above.

[0025] The above description is only a preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present utility model should be included in the protection scope recorded in the claims.

Claims

1. A noise-reducing gearbox for a coffee machine, characterized in that: The device includes a housing (1), a cover (2), a gear set (3), and a drive motor (4). The gear set (3) is assembled in the housing (1), and the drive motor (4) is mounted on the housing (1) and connected to the gear set (3) for transmission. The housing (1) has a first side wall (5) and a second side wall (6). The first side wall (5) and the second side wall (6) are distributed inside and outside the housing, and a sound insulation cavity (7) is formed between the first side wall (5) and the second side wall (6). The cover (2) is connected to the housing (1) to seal the housing (1).

2. The noise-reducing gearbox for a coffee machine according to claim 1, characterized in that: The upper end face of the first sidewall (5) is provided with a groove (8), the groove (8) is distributed along the upper end face of the first sidewall (5), and the cover (2) is provided with a rib (9) connected to the groove (8).

3. The noise-reducing gearbox for a coffee machine according to claim 2, characterized in that: The depth of the groove (8) is at least 1 mm.

4. A noise-reducing gearbox for a coffee machine according to any one of claims 1-3, characterized in that: The cover (2) is connected and fixed to the housing (1) by a plurality of first screws (10).

5. The noise-reducing gearbox for a coffee machine according to claim 4, characterized in that: The soundproof cavity (7) is provided with a first screw hole (11) for the first screw (10) to be connected.

6. A noise-reducing gearbox for a coffee machine according to any one of claims 1-3, characterized in that: The housing (1) is provided with a cover sleeve (12), and at least part of the drive motor (4) is embedded in the cover sleeve (12). The cover sleeve (12) is provided with a second screw (13) that is connected and fixed to the drive motor (4).

7. A noise-reducing gearbox for a coffee machine according to any one of claims 1-3, characterized in that: The housing is provided with a pitch-adjusting motor (14), an external gear (16), an internal gear (17), a pitch-adjusting seat (18), an external cutter head (15), and an internal cutter head. The pitch-adjusting motor (14) drives the external gear (16) to rotate through the drive gear (19). The external gear (16) meshes with the internal gear (17). The internal gear (17) is provided with an internal thread structure (20). The pitch-adjusting seat (18) is provided with an external thread structure (21) that cooperates with the internal thread structure. The external cutter head (15) is arranged around the internal cutter head and is fixed on the pitch-adjusting seat (18).

8. A coffee machine, characterized in that: The coffee machine has a noise-reducing gearbox as described in any one of claims 1-7.

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