Low-noise automobile air compressor gear with inner sheath

Abstract

The utility model discloses a low-noise automobile air compressor gear with an inner sheath, which belongs to the technical field of gear structures and comprises a mounting plate, a gear and a pressing plate. An inner sheath is fixedly installed in the middle of the installation plate, and a key groove connected with the shaft key in an inserted mode is formed in the inner wall of the inner sheath. The gear is composed of three toothed plates, and the three toothed plates are combined into a circle. Every two adjacent toothed plates abut against each other. A plurality of gear teeth are fixedly mounted on the toothed plate in a circumferential array at equal intervals; a combined component is mounted between the mounting plate and the gear; the mounting plate is mounted on the lower side of the gear through a combination assembly; a mounting assembly is mounted on the mounting plate and the pressing plate, and the pressing plate is mounted on the upper side of the gear through the mounting assembly; the mounting plate, the gear and the pressing plate are locked through a plurality of fastening assemblies. Through the mode, the acting force transmitted to the rotating shaft through the inner sheath is more uniform, and the radial stress of the rotating shaft is reduced; a damping layer is formed between the mounting plate and the gear through the combined assembly, and the effect of absorbing self-ringing vibration of the gear is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gear structures, in particular to a low-noise automobile air compressor gear with an inner sheath. Background Art

[0002] Automobile air compressors mainly compress air by driving the rotation of the screw shaft through the motor and transmission components. Since the torque required for automobile air compressors is increased, the transmission between the motor and the screw shaft is mainly achieved through a gear set. The high-speed rotation of the gears inside the air compressor causes the gears to vibrate, resulting in a lot of noise. In order to reduce noise, low-noise gears need to be selected.

[0003] For example, Chinese patent CN217977264U discloses a low-noise gear structure. The device is provided with three independent gears, the middle gear is set as a flexible gear, and the gears on both sides are set as rigid gears. The rigid gears on both sides are connected by flexible gears. During operation, the flexible gears can be used as a damping layer to reduce gear vibration.

[0004] However, the gears in the automobile air compressor rotate at high speeds, and the gears are prone to generate high heat due to mechanical friction. The heat generated by the gears of this device is easily transferred directly to the shaft through the gears, which can easily damage the shaft.

[0005] Based on this, the utility model designs a low-noise automobile air compressor gear with an inner sleeve to solve the above problems. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a low-noise automobile air compressor gear with an inner sheath.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A low-noise automobile air compressor gear with an inner sleeve, comprising a mounting plate, a gear and a pressing plate;

[0009] An inner sleeve is fixedly installed in the middle of the mounting plate, and a keyway for plugging with the shaft key is opened on the inner wall of the inner sleeve; the gear is composed of three tooth plates, and the three tooth plates are combined into a circle; two adjacent tooth plates are abutted; a plurality of gear teeth are fixedly installed on the tooth plate in a circumferential array with equal spacing; a combination component is installed between the mounting plate and the gear; the mounting plate is installed on the lower side of the gear through the combination component;

[0010] The mounting plate and the pressure plate are installed with mounting components, and the pressure plate is installed on the upper side of the gear through the mounting components; the mounting plate, the gear and the pressure plate are locked through a plurality of fastening components.

[0011] Furthermore, the gear also includes a reinforcement plate, and the upper and lower sides of the tooth plate are fixedly installed with reinforcement plates for reinforcing the tooth plate.

[0012] Furthermore, the combination assembly includes a lower combination slot and an inserting plate. The lower combination slot is opened in the middle of the lower side of the tooth plate, and the inserting plate is fixedly installed on the upper side of the mounting plate, and the inserting plate is plugged into the lower combination slot.

[0013] Furthermore, the combination assembly also includes an elastic layer, and the elastic layer is adhered between the mounting plate and the lower combination groove.

[0014] Furthermore, the combined component is made of viscoelastic material.

[0015] Furthermore, the installation component includes a slot, an insert block and an upper combination slot. The upper side of the tooth plate is provided with an upper combination slot, and side slots are provided on both sides of the upper combination slot. Two adjacent side slots constitute a slot. Three insert blocks are fixedly installed on the pressure plate, and the insert blocks are plugged into the slot.

[0016] Furthermore, the fastening assembly includes mounting holes, self-tightening screws and self-tightening nuts. A plurality of through mounting holes are provided on the mounting plate, the gear and the pressure plate. The plurality of mounting holes are evenly distributed in a circular array at equal intervals on the mounting plate. The self-tightening screw passes through the mounting plate, the gear and the pressure plate. Two self-tightening nuts are threadedly connected to both ends of the self-tightening screw; the mounting plate, the gear and the pressure plate are located between the two self-tightening nuts.

[0017] The utility model has the following technical effects:

[0018] 1. The utility model combines three tooth plates into a circular gear. When the gear teeth on a certain tooth plate are seriously damaged, the corresponding tooth plate can be replaced separately; the inner sleeve is used to prevent the gear from contacting and rubbing with the inner wall of the air compressor, thereby increasing the service life of the device; the gear teeth are forced to push the tooth plate to rotate, and the rotation of the tooth plate drives the remaining two tooth plates, the mounting plate and the pressure plate to rotate; thereby, when one of the tooth plates rotates, a part of the force received is transmitted to the remaining two tooth plates, so that the three tooth plates can synchronously transmit the mounting plate and the inner sleeve, so that the force on the mounting plate is more uniform, thereby making the force transmitted to the rotating shaft through the inner sleeve more uniform, thereby reducing the radial force on the rotating shaft; through the combined component, a damping layer is formed between the mounting plate and the gear, so as to achieve the effect of absorbing the self-sounding vibration of the gear, thereby reducing the gear noise; at the same time, when the air compressor is running, the mechanical friction between the multiple gears generates a large amount of heat, and the combined component can prevent the heat generated on the gear from being directly transmitted to the rotating shaft, thereby avoiding damage to the main shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 The utility model is a three-dimensional low-noise automobile air compressor gear with an inner sheath Figure 1 ;

[0021] Figure 2 This is a front view of a low-noise automobile air compressor gear with an inner sheath according to the utility model;

[0022] Figure 3 The utility model is a three-dimensional low-noise automobile air compressor gear with an inner sheath Figure 2 ;

[0023] Figure 4 The exploded view of the mounting plate and its connection structure;

[0024] Figure 5 The exploded diagram of the pressure plate and its connection structure;

[0025] Figure 6 Schematic diagram of the tooth plate and its connection structure.

[0026] The numbers in the figure represent:

[0027] 1. Mounting plate; 11. Inner sleeve; 12. Keyway; 2. Gear; 21. Tooth plate; 22. Reinforcement plate; 23. Gear teeth; 3. Combination assembly; 31. Lower combination slot; 32. Insert plate; 33. Elastic layer; 4. Mounting assembly; 42. Slot; 43. Insert block; 44. Upper combination slot; 5. Press plate; 6. Fastening assembly; 61. Mounting hole; 62. Self-tightening screw; 63. Self-tightening nut. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0029] The utility model is further described below in conjunction with embodiments.

[0030] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view. Example 1

[0031] Please refer to the instruction manual Figure 1-4 , a low-noise automobile air compressor gear with an inner sleeve, comprising a mounting plate 1, a gear 2 and a pressing plate 5;

[0032] An inner sleeve 11 is fixedly installed in the middle of the mounting plate 1, and a keyway 12 for plugging with the shaft key is opened on the inner wall of the inner sleeve 11; the gear 2 is composed of three tooth plates 21, and the three tooth plates 21 are combined into a circle; two adjacent tooth plates 21 are abutted; a plurality of gear teeth 23 are fixedly installed on the tooth plate 21 in a circular array at equal intervals; a combination component 3 is installed between the mounting plate 1 and the gear 2; the mounting plate 1 is installed on the lower side of the gear 2 through the combination component 3;

[0033] The mounting plate 1 and the pressure plate 5 are mounted with mounting components 4 , and the pressure plate 5 is mounted on the upper side of the gear 2 through the mounting components 4 ; the mounting plate 1 , the gear 2 and the pressure plate 5 are locked by a plurality of fastening components 6 .

[0034] In this embodiment, when the low-noise automobile air compressor gear with an inner sleeve is working normally, the three tooth plates 21 are combined into a circular gear 2, and then the mounting plate 1 is installed on the lower side of the gear 2 through the assembly component 3, and the pressure plate 5 is installed on the upper side of the gear 2 through the mounting component 4, and then the two mounting plates 1, the gear 2 and the pressure plate 5 are locked through the fastening component 6; at the same time, when the gear teeth 23 on a certain tooth plate 21 are seriously damaged, the corresponding tooth plate 21 can be replaced separately; after aligning the keyway 12 in the inner sleeve 11 with the shaft key of the rotating shaft, the rotating shaft is inserted into the inner sleeve 11, so that the mounting plate 1 is installed on the rotating shaft; when rotating, the inner sleeve 11 is used to prevent the gear 2 from contacting and rubbing with the inner wall of the air compressor, thereby increasing the service life of the device; transmission is carried out through the meshing of the gear teeth 23; the gear teeth 23 are pushed by force The movable tooth plate 21 rotates, and the rotation of the tooth plate 21 drives the other two tooth plates 21, the mounting plate 1 and the pressure plate 5 to rotate; so that when one of the tooth plates 21 rotates, part of the force received is transmitted to the other two tooth plates 21, so that the three tooth plates 21 can synchronously transmit the mounting plate 1 and the inner sleeve 11, so that the force on the mounting plate 1 is more uniform, so that the force transmitted to the rotating shaft through the inner sleeve 11 is more uniform, and the radial force on the rotating shaft is reduced; through the combination component 3, a damping layer is formed between the mounting plate 1 and the gear 2, so as to achieve the effect of absorbing the self-sounding vibration of the gear, thereby reducing the gear noise; at the same time, when the air compressor is running, the mechanical friction between the multiple gears 2 generates a large amount of heat, and the combination component 3 can prevent the heat generated on the gear 2 from being directly transferred to the rotating shaft, thereby avoiding damage to the main shaft. Example 2

[0035] like Figure 1-6 As shown, as a preferred embodiment of the utility model, the gear 2 further includes a reinforcing plate 22, and the reinforcing plates 22 for reinforcing the gear plate 21 are fixedly installed on the upper and lower sides of the gear plate 21;

[0036] The assembly assembly 3 includes a lower assembly slot 31 and an insert plate 32. The lower assembly slot 31 is provided in the middle of the lower side of the tooth plate 21. The insert plate 32 is fixedly installed on the upper side of the mounting plate 1. The insert plate 32 is plugged into the lower assembly slot 31.

[0037] The combination assembly 3 further includes an elastic layer 33, and the elastic layer 33 is adhered between the mounting plate 1 and the lower combination groove 31;

[0038] The combined component 3 is made of viscoelastic material;

[0039] The mounting assembly 4 includes a slot 42, an insert block 43 and an upper combination slot 44. The upper side of the tooth plate 21 is provided with an upper combination slot 44, and side slots are provided on both sides of the upper combination slot 44. Two adjacent side slots constitute the slot 42. Three insert blocks 43 are fixedly mounted on the pressing plate 5, and the insert blocks 43 are plugged into the slot 42.

[0040] The fastening assembly 6 includes a mounting hole 61, a self-tightening screw 62 and a self-tightening nut 63. A plurality of through mounting holes 61 are provided on the mounting plate 1, the gear 2 and the pressure plate 5. The plurality of mounting holes 61 are evenly distributed in a circular array at equal intervals on the mounting plate 1. The self-tightening screw 62 passes through the mounting plate 1, the gear 2 and the pressure plate 5. Two self-tightening nuts 63 are threadedly connected to both ends of the self-tightening screw 62. The mounting plate 1, the gear 2 and the pressure plate 5 are located between the two self-tightening nuts 63.

[0041] The tooth profile of the gear teeth 23 adopts a standard involute tooth profile.

[0042] In this embodiment, when the gear 2, the combination component 3, the installation component 4 and the fastening component 6 are working normally, the multiple tooth plates 21 are combined into a circle, the elastic layer 33 is pasted into the lower combination groove 31, and the plug plate 32 is aligned with the lower combination groove 31, and then the three tooth plates 21 are installed on the installation plate 1; when the three tooth plates 21 rotate driven by the gear teeth 23, the vibration generated by the tooth plates 21 perpendicular to the upper and lower sides of the tooth plates 21 is absorbed by the elastic layer 33, thereby reducing the self-sounding caused by the vibration of the tooth plates 21; at the same time, the tooth plates 21 and the installation plate 1 are fixedly installed. The elastic layer 33 is installed to prevent the heat generated on the tooth plate 21 from being directly transferred to the rotating shaft through the mounting plate 1 and the inner sleeve 11, thereby preventing the high-speed operation of the air compressor from damaging the rotating shaft. After aligning the plug 43 on the pressure plate 5 with the slot 42, the plug 43 is inserted into the slot 42 to complete the installation of the pressure plate 5. Subsequently, a plurality of self-tightening screws 62 are passed through the mounting holes 61, and the two ends of the self-tightening screws 62 are locked by the self-tightening nuts 63. Through the joint action of the pressure plate 5 and the mounting plate 1, the tooth plate 21 is clamped, so that the device remains stable during operation.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A low-noise automobile air compressor gear with an inner sleeve, comprising a mounting plate (1), a gear (2) and a pressure plate (5), characterized in that: An inner sleeve (11) is fixedly mounted in the middle of the mounting plate (1), and a keyway (12) for plugging into a shaft key is provided on the inner wall of the inner sleeve (11); the gear (2) is composed of three tooth plates (21), and the three tooth plates (21) are combined into a circle; two adjacent tooth plates (21) are in contact; a plurality of gear teeth (23) are fixedly mounted on the tooth plates (21) at equal intervals in a circular array; a combination component (3) is installed between the mounting plate (1) and the gear (2); the mounting plate (1) is installed on the lower side of the gear (2) through the combination component (3); The mounting plate (1) and the pressing plate (5) are mounted with mounting components (4), and the pressing plate (5) is mounted on the upper side of the gear (2) via the mounting components (4); the mounting plate (1), the gear (2) and the pressing plate (5) are locked via a plurality of fastening components (6); the gear (2) further comprises a reinforcing plate (22), and the reinforcing plates (22) for reinforcing the gear plate (21) are fixedly mounted on the upper and lower sides of the tooth plate (21); The combination assembly (3) comprises a lower combination groove (31) and an insert plate (32); the lower combination groove (31) is provided in the middle of the lower side of the tooth plate (21); the insert plate (32) is fixedly mounted on the upper side of the mounting plate (1); and the insert plate (32) is plugged into the lower combination groove (31); The combined component (3) further comprises an elastic layer (33), and the elastic layer (33) is adhered between the mounting plate (1) and the lower combined groove (31).

2. The low-noise automobile air compressor gear with an inner sheath according to claim 1, characterized in that: The combined component (3) is made of viscoelastic material.

3. The low-noise automobile air compressor gear with an inner sheath according to claim 2, characterized in that: The mounting assembly (4) comprises a slot (42), an insert block (43) and an upper combination slot (44); the upper side of the tooth plate (21) is provided with an upper combination slot (44); side slots are provided on both sides of the upper combination slot (44); two adjacent side slots constitute the slot (42); three insert blocks (43) are fixedly mounted on the pressure plate (5); the insert blocks (43) are plugged into the slots (42).

4. The low-noise automobile air compressor gear with an inner sheath according to claim 3, characterized in that: The fastening assembly (6) comprises a mounting hole (61), a self-tightening screw (62) and a self-tightening nut (63); a plurality of through mounting holes (61) are provided on the mounting plate (1), the gear (2) and the pressure plate (5); the plurality of mounting holes (61) are evenly distributed in a circular array at equal intervals on the mounting plate (1); the self-tightening screw (62) passes through the mounting plate (1), the gear (2) and the pressure plate (5); two self-tightening nuts (63) are threadedly connected to two ends of the self-tightening screw (62); and the mounting plate (1), the gear (2) and the pressure plate (5) are located between the two self-tightening nuts (63).

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