Speed reducer shell, speed reducer and vehicle

Abstract

The utility model provides a speed reducer shell, a speed reducer and a vehicle. The speed reducer shell comprises a body and a blocking part, a containing cavity is formed in the body, and the containing cavity is used for containing a gear assembly and lubricating liquid of a speed reducer; the blocking part is connected with the inner wall of the containing cavity and used for being arranged close to the output gear of the gear assembly so as to limit rising of the liquid level of the lubricating liquid when the output gear works. According to the speed reducer shell, the efficiency of the speed reducer can be improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a reducer housing, a reducer and a vehicle. Background Art

[0002] Lubricating fluid can lubricate and dissipate heat for the gear assembly of the reducer, thus improving the stability of the reducer. However, when the gears in the gear assembly rotate, the liquid level of the lubricating fluid rises, which increases the resistance to the rotation of the gears and reduces the efficiency of the reducer. Therefore, a reducer that can improve efficiency is urgently needed. Utility Model Content

[0003] The present application provides a reducer housing, a reducer and a vehicle for a vehicle, which can improve the efficiency of the reducer.

[0004] The present application provides a reducer housing, which includes a main body and a blocking portion. The main body forms a accommodating chamber, which is used to accommodate a gear assembly and lubricating fluid of the reducer; the blocking portion is connected to the inner wall of the accommodating chamber and is used to be arranged close to an output gear of the gear assembly to limit the rise in the liquid level of the lubricating fluid when the output gear is working.

[0005] The inner wall includes a side portion and a bottom portion connected to the side portion, and the blocking portion is located in an area of ​​the side portion close to the bottom portion.

[0006] Wherein, the inner wall protrudes toward the middle of the accommodating cavity to form a blocking portion.

[0007] The inner wall further includes a top connected to the side, and the blocking portion includes at least two sub-blocking portions spaced apart from each other; wherein the at least two sub-blocking portions are arranged in sequence from an area of ​​the side close to the bottom to an area of ​​the side close to the top.

[0008] The present application provides a reducer, which includes a gear assembly and the reducer housing, wherein the gear assembly is disposed in an accommodating cavity.

[0009] The reducer further comprises lubricating liquid arranged in the accommodating cavity, and at least a part of the blocking portion is used to be located above the liquid level of the lubricating liquid.

[0010] Wherein, the inner wall of the accommodating cavity protrudes toward the middle of the accommodating cavity to form a blocking portion; wherein, the blocking portion extends along the radial direction of the output gear.

[0011] The side portion of the inner wall extends along the circumference of the output gear, and the blocking portion includes at least two sub-blocking portions spaced apart along the circumference.

[0012] Wherein, along the radial direction of the output gear, the distance between the end of the blocking portion and the end of the corresponding tooth portion of the output gear is 0.5 mm-5 mm.

[0013] The present application provides a vehicle, which includes the above-mentioned reducer.

[0014] The beneficial effects of the present application are as follows: the reducer housing provided by the present application includes a body and a blocking portion, the body forms a receiving chamber, and the receiving chamber is used to receive the gear assembly and lubricating fluid of the reducer; the blocking portion is connected to the inner wall of the receiving chamber, and is used to be arranged near the output gear of the gear assembly. When the reducer provided with the reducer housing of the present application is working, the rising of the liquid level of the lubricating fluid can be limited under the action of the blocking portion, so that the contact area between the output gear and the liquid surface is small, and the rotational resistance of the output gear can be reduced, thereby improving the efficiency of the reducer provided with the reducer housing of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0016] Figure 1 It is a structural schematic diagram of an embodiment of a reducer provided by the present application;

[0017] Figure 2 yes Figure 1 An enlarged schematic diagram of a local structure of an embodiment;

[0018] Figure 3 It is a structural schematic diagram of a vehicle embodiment provided by the present application. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0022] See also Figure 1 , Figure 1 1 is a schematic diagram of the structure of an embodiment of a reducer provided by the present application, wherein the reducer 10 includes a gear assembly 200 and a reducer housing 100. The gear assembly 200 includes an input gear 220, an output gear 210, a first middle gear 230 and a second middle gear, wherein the first middle gear 230 is meshed with the input gear 220. The second middle gear is coaxial with the first middle gear 230 and meshed with the output gear 210.

[0023] See also Figure 2 , Figure 2 yes Figure 1 The enlarged schematic diagram of the blocking part of the embodiment shows that the reducer housing 100 includes a body 110 and a blocking part 120. The body 110 forms a receiving cavity, which is used to receive the gear assembly 200 and the lubricating liquid 300 of the reducer 10. The blocking part 120 is connected to the inner wall of the receiving cavity and is used to be arranged near the output gear 210 of the gear assembly 200 to limit the liquid level 101 of the lubricating liquid 300 from rising when the output gear 210 is working.

[0024] The lubricating liquid 300 can lubricate and dissipate heat for the gear assembly 200, thereby improving the stability of the reducer 10. When the edge of the output gear 210 is located below the liquid level 101 of the lubricating liquid 300 or in contact with the liquid level 101, the rotation of the output gear 210 will drive the liquid level 101 to rise, thereby increasing the resistance to the rotation of the output gear 210. In order to solve the above problems, the reducer housing 100 provided in the present application is provided with a blocking portion 120, which is connected to the inner wall of the accommodating cavity and is used to be arranged close to the output gear 210. When the reducer 10 provided with the reducer housing 100 is working, the liquid level 101 of the lubricating liquid 300 can be limited to rise under the action of the blocking portion 120, so that the area of ​​contact between the output gear 210 and the liquid level 101 is small, and the rotation resistance of the output gear 210 can be reduced, thereby improving the efficiency of the reducer 10 provided with the reducer housing 100 of this embodiment.

[0025] Optionally, the inner wall of the accommodating cavity includes a side portion and a bottom connected to the side portion, and the blocking portion 120 is located in the area of ​​the side portion near the bottom. The lubricating liquid 300 is located at the bottom of the inner wall or between the bottom and the side portion under the action of gravity. The blocking portion 120 of this embodiment is located in the area of ​​the side portion near the bottom. The blocking portion 120 blocks or interferes with the lubricating liquid 300, limits the rise of the liquid level 101 or blocks the trend of the liquid level 101 rising, and can reduce the rotation resistance of the output gear 210, thereby improving the efficiency of the reducer 10.

[0026] Optionally, the inner wall of the accommodating cavity protrudes toward the middle of the accommodating cavity to form a blocking portion 120 , that is, the blocking portion 120 and the main body 110 are integrally formed, which can reduce the difficulty of connecting the blocking portion 120 and the main body 110 .

[0027] The lubricating liquid 300 will be consumed, and the distance between the initial liquid level of the lubricating liquid 300 and the top of the inner wall is greater than the distance between the liquid level after consumption and the top. In order to enhance the effect of the blocking part 120 in limiting the rise of the liquid level 101, the inner wall also includes a top connected to the side, and the blocking part 120 includes at least two sub-blocking parts arranged at intervals. Among them, at least two sub-blocking parts are arranged from the area near the bottom of the side to the area near the top of the side in sequence, which can avoid the situation where all the sub-blocking parts are located below the liquid level 101 when the lubricating liquid 300 is stationary, causing the blocking part 120 to fail. Among them, a groove is formed between the two adjacent sub-blocking parts, and the lubricating liquid 300 driven by the output gear 210 when rotating will be blocked by different sub-blocking parts to limit the rising height of the liquid level 101, which can reduce the lubricating liquid 300 driven by the output gear 210; when the lubricating liquid 300 enters the groove, the lubricating liquid 300 in the groove is thrown out by the centrifugal force, so that the lubricating liquid 300 driven by the output gear 210 is reduced to a minimum, which can enhance the effect of the blocking part 120 in limiting the rise of the lubricating liquid level 101.

[0028] Optionally, the sub-blocking parts are arranged from the area near the bottom of the side to the area near the top of the side, and the sizes of the sub-blocking parts arranged in sequence are the same, which is easy to process the reducer housing. In other embodiments, the sizes of the sub-blocking parts arranged in sequence increase in sequence, that is, the distance between the end face of the sub-blocking part near the top and the inner wall is greater than the distance between the end face of the sub-blocking part near the bottom and the inner wall, which is not limited here.

[0029] Optionally, the blocking portion 120 may be in a rectangular or triangular shape, which is not limited herein.

[0030] Optionally, the reducer 10 further includes a lubricating liquid 300 disposed in the accommodating chamber, and the blocking portion 120 is at least partially used to be located above the lubricating liquid level 101. That is, the blocking portion 120 of this embodiment is at least partially located above the liquid level 101, thereby preventing the blocking portion 120 from failing and enhancing the effectiveness of the blocking portion 120 in limiting the rise of the liquid level 101.

[0031] Optionally, the inner wall of the accommodating cavity protrudes toward the middle of the accommodating cavity to form a blocking portion 120, wherein the blocking portion 120 extends in the radial direction of the output gear 210. That is, the blocking portion 120 of this embodiment is integrally formed with the body 110, which can reduce the difficulty of connecting the blocking portion 120 with the body 110; in addition, the blocking portion 120 extends in the radial direction of the output gear 210, which can enhance the effect of the blocking portion 120 in limiting the rise of the lubricating liquid level 101.

[0032] Optionally, the side of the inner wall of the accommodating cavity extends along the circumference of the output gear 210, and the blocking portion 120 includes at least two sub-blocking portions spaced apart along the circumference. The side of the inner wall of the accommodating cavity in this embodiment extends along the circumference of the output gear 210, that is, the area of ​​the inner wall of the accommodating cavity close to the output gear 210 can be arranged in close contact with the edge of the output gear 210, thereby improving the utilization rate of the accommodating cavity space; the two sub-blocking portions are at different heights in the gravity direction, which can reduce the situation where all the sub-blocking portions are located below the liquid surface 101 when the lubricating fluid 300 is stationary, thereby avoiding failure of the blocking portion 120. Among them, a groove is formed between two adjacent sub-blocking parts, and the lubricating liquid 300 driven by the output gear 210 when rotating will be blocked by different sub-blocking parts to limit the rising height of the liquid level 101, which can reduce the lubricating liquid 300 driven by the output gear 210; when the lubricating liquid 300 enters the groove, the lubricating liquid 300 in the groove is thrown out by the centrifugal force, so that the lubricating liquid 300 driven by the output gear 210 is reduced to a minimum, which can enhance the effect of the blocking part 120 in limiting the rising height of the lubricating liquid level 101.

[0033] Optionally, along the radial direction of the output gear 210, the distance a between the end 121 of the blocking portion and the end 211 of the tooth portion of the corresponding output gear 210 is 0.5 mm-5 mm. For example, the distance a between the end 121 of the blocking portion and the end 211 of the tooth portion of the corresponding output gear 210 is 0.5 mm, 0.7 mm, 1 mm, 1.4 mm, 2.5 mm, 3.9 mm, 5 mm, etc. The distance a between the end 121 of the blocking portion and the end 211 of the tooth portion of the corresponding output gear 210 in this embodiment is 0.5 mm-5 mm, that is, the closer the distance between the blocking portion 120 and the output gear 210, the better the effect of limiting the rise of the lubricating liquid level 101.

[0034] Optionally, a plurality of through holes of smaller size are provided near the middle of the blocking portion, and the plurality of through holes can be used for the lubricating fluid 300 to flow back.

[0035] In other embodiments, the blocking part may include a rotating shaft, a rotating plate, and a bracket provided with a limiting part and an opening, the rotating plate is rotatably connected to the bracket via the rotating shaft, the rotating plate is used to open and close the opening, and the limiting part is used to limit the rise of the rotating plate. It can be understood that when the liquid level 101 rises, the rotating plate is driven to rise, and the rotating plate is limited by the limiting part so that the opening is closed, thereby limiting the rise of the lubricating liquid level 101; in addition, the lubricating liquid 300 in the groove pushes the rotating plate to open the opening under the action of gravity, so that the lubricating liquid 300 flows back to the bottom.

[0036] The present application provides a vehicle, referring to Figure 3 , Figure 3 2 is a schematic diagram of the structure of a vehicle embodiment provided in the present application, wherein the vehicle 20 includes a reducer, wherein the reducer is any one of the reducers in the above-mentioned reducer embodiments, which will not be described in detail here.

[0037] The above are only implementation methods of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A reducer housing, characterized in that: include: The body forms a receiving cavity, and the receiving cavity is used to receive the gear assembly and lubricating fluid of the reducer; The blocking portion is connected to the inner wall of the accommodating cavity and is used to be arranged close to the output gear of the gear assembly to limit the rise of the liquid level of the lubricating fluid when the output gear is working.

2. The reducer housing according to claim 1, characterized in that: The inner wall includes a side portion and a bottom portion connected to the side portion, and the blocking portion is located in a region of the side portion close to the bottom portion.

3. The reducer housing according to claim 1, characterized in that: The inner wall protrudes toward the middle of the accommodating cavity to form the blocking portion.

4. The reducer housing according to claim 2, characterized in that: The inner wall further comprises a top portion connected to the side portion, and the blocking portion comprises at least two sub-blocking portions arranged at intervals; The at least two sub-blocking portions are arranged in sequence from an area of ​​the side portion close to the bottom to an area of ​​the side portion close to the top.

5. A reducer, characterized in that: include: A gear assembly and a reducer housing as described in any one of claims 1 to 4, wherein the gear assembly is arranged in the accommodating cavity.

6. The reducer according to claim 5, characterized in that: The reducer also includes lubricating liquid disposed in the accommodating chamber, and the blocking portion is at least partially configured to be located above a liquid level of the lubricating liquid.

7. The reducer according to claim 5, characterized in that: The inner wall of the accommodating cavity protrudes toward the middle of the accommodating cavity to form the blocking portion; Wherein, the blocking portion extends along the radial direction of the output gear.

8. The reducer according to claim 7, characterized in that: The side portion of the inner wall extends along the circumferential direction of the output gear, and the blocking portion includes at least two sub-blocking portions spaced apart along the circumferential direction.

9. The reducer according to claim 5, characterized in that: Along the radial direction of the output gear, the distance between the end of the blocking portion and the end of the corresponding tooth portion of the output gear is 0.5 mm-5 mm.

10. A vehicle, characterized in that: include: The reducer according to any one of claims 5 to 9.

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