Differential locking structure
By setting a push plate between the second half-axis gear and the coil assembly of the differential, and using the coil assembly to push the push plate to mesh with the second half-axis gear, the power concentration problem caused by the lack of restriction device in the planetary gear set in the differential is solved, and the effect of reasonable power distribution and vehicle escape is achieved.
Patent Information
- Application Number
- CN202323659499.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2033-12-29
AI Technical Summary
In the open structure of the existing differential, the planetary gear set lacks a restriction device. When the vehicle slips, the power is concentrated on the sliding wheels, causing the remaining wheels to be unable to distribute the power, which in turn makes the vehicle unable to escape.
A differential locking structure is designed, by providing a push plate between the second half-axis gear and the coil assembly, and by energizing the coil assembly to push the push plate to mesh with the second half-axis gear, to avoid rotation and slippage.
It effectively avoids the situation where the whole vehicle's power is concentrated on the wheels, so that the power can be distributed reasonably and helps the vehicle get out of trouble.
Smart Images
Figure CN222760246U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of automobile parts and components, in particular to a differential locking structure. Background Art
[0002] The car differential is a mechanism that enables the left and right (or front and rear) drive wheels to rotate at different speeds. It is mainly composed of left and right half-shaft gears, two planetary gears and a gear rack. The function is to make the left and right wheels roll at different speeds when the car is turning or driving on uneven roads, that is, to ensure that the drive wheels on both sides perform pure rolling motion. The differential is installed to adjust the speed difference between the left and right wheels. In four-wheel drive, in order to drive the four wheels, all the wheels must be connected. If the four wheels are mechanically connected together, the car cannot rotate at the same speed when driving on a curve. In order to make the rotation speed of the car basically consistent when driving on a curve, an intermediate differential needs to be added to adjust the speed difference between the front and rear wheels.
[0003] Most current differentials are open structures, and the planetary gear sets have no limiting devices. When a vehicle skids, the power of the entire vehicle is concentrated on the slipping wheel, so that the remaining wheels cannot be distributed with power, which in turn makes the vehicle unable to escape. Utility Model Content
[0004] Based on this, the purpose of the utility model is to provide a differential locking structure, which aims to solve the problem that in the current open differential, the planetary gear set has no limiting device. When the vehicle slips, the power of the entire vehicle is concentrated on the slipping wheel, so that the remaining wheels cannot be distributed with power, which in turn causes the vehicle to be unable to escape.
[0005] To achieve the above object, the utility model is implemented through the following technical solutions: a differential locking structure, including a housing assembly, an axle assembly arranged inside the housing assembly, a coil assembly arranged on the housing assembly, and a push plate arranged between the coil assembly and the axle assembly;
[0006] The axle assembly includes a planetary gear shaft passing through the housing assembly, a first half-shaft gear and a second half-shaft gear arranged on the planetary gear shaft, and a planetary gear arranged between the first half-shaft gear and the second half-shaft gear. The push plate is arranged between the second half-shaft gear and the coil assembly. The coil assembly is energized to push the push plate close to the second half-shaft gear and mesh with the second half-shaft gear to prevent the second half-shaft gear from slipping due to self-rotation.
[0007] In summary, according to a differential locking structure proposed by the utility model, a push plate is arranged between the second half-shaft gear and the coil assembly, and the push plate is pushed by the coil assembly to engage with the second half-shaft gear, so that the half-shaft gear stops rotating and slipping, and then the wheel stops slipping. Specifically, the differential locking structure includes a housing assembly, an axle assembly arranged inside the housing assembly, a coil assembly arranged on the housing assembly, and a push plate arranged between the coil assembly and the axle assembly. The axle assembly includes a planetary gear shaft passing through the housing assembly, a first half-shaft gear and a second half-shaft gear arranged on the planetary gear shaft, and a planetary gear arranged between the first half-shaft gear and the second half-shaft gear, and the two sides of the planetary gear are respectively engaged with the first half-shaft gear and the second half-shaft gear. The push plate is arranged between the second half-shaft gear and the coil assembly, and the coil assembly is energized to push the push plate close to the second half-shaft gear to engage with the second half-shaft gear. Since the two sides of the planetary gear are respectively meshed with the first half-shaft gear and the second half-shaft gear, when the push plate is pushed forward to mesh with the second half-shaft gear, the second half-shaft gear stops rotating and slips, so that the power of the whole vehicle is not concentrated on the slipping wheel, and the power is reasonably distributed to get the vehicle out of trouble.
[0008] Furthermore, the housing assembly includes a first housing disposed outside the first side gear and a second housing disposed outside the second side gear, and the first housing and the second housing are enclosed to accommodate the wheel axle assembly.
[0009] Furthermore, one end of the push plate close to the second side gear is provided with teeth for meshing with the second side gear.
[0010] Furthermore, an elastic member is provided between the push plate and the second half-shaft gear, and the elastic member is sleeved on a side of the second half-shaft gear close to the push plate to separate the push plate and the second half-shaft gear.
[0011] Furthermore, the coil assembly is arranged outside the second shell, a washer is provided at one end of the coil assembly close to the push plate, an end bearing is provided between the washer and the push plate, and the coil assembly pushes the push plate along the length direction of the planetary gear shaft.
[0012] Furthermore, a limiting member for preventing the coil assembly from falling off is provided at one end of the coil assembly away from the push plate.
[0013] Furthermore, a main reduction gear is provided on the outside of the second shell, and the main reduction gear is fixed to the second shell by a fastener.
[0014] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0016] Figure 1 Schematic diagram of a differential locking structure in one embodiment of the utility model.
[0017] Component symbol description:
[0018] Housing assembly 100, first housing 110, second housing 120, axle assembly 200, planetary gear shaft 210, first half-shaft gear 220, second half-shaft gear 230, planetary gear 240, coil assembly 300, push plate 400, washer 500, end bearing 600, limiter 700, main reduction gear 800. DETAILED DESCRIPTION
[0019] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. Several embodiments of the utility model are given in the accompanying drawings. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.
[0020] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right", "upper", "lower" and similar expressions used herein are for illustrative purposes only and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.
[0021] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0022] Please combine Figure 1, which is a schematic diagram of a differential locking structure provided in an embodiment of the utility model, the differential locking structure includes a housing assembly 100, an axle assembly 200 disposed inside the housing assembly 100, a coil assembly 300 disposed on the housing assembly 100, and a push plate 400 disposed between the coil assembly 300 and the axle assembly 200, wherein:
[0023] The axle assembly 200 includes a planetary gear 240 shaft 210 passing through the housing assembly 100, a first side gear 220 and a second side gear 230 disposed on the planetary gear 240 shaft 210, and a planetary gear 240 disposed between the first side gear 220 and the second side gear 230. The planetary gear 240 shaft 210 is equal in length to the housing assembly 100, the planetary gear 240 is sleeved on the planetary gear 240 shaft 210, and is suspended on the planetary gear 240 shaft 210 by relying on the first side gear 220 and the second side gear 230 on both sides, and the two sides of the planetary gear 240 are respectively meshed with the first side gear 220 and the second side gear 230, so that the first side gear 220, the second side gear 230 and the planetary gear 240 rotate as a whole.
[0024] In order to accommodate the axle assembly 200, the housing assembly 100 includes a first housing 110 disposed outside the first side gear 220 and a second housing 120 disposed outside the second side gear 230. In order to fix the first housing 110 and the second housing 120, a first fastener is provided at the connection between the two. The first fastener passes through the first housing 110 and is screwed with the second housing 120 to connect the first housing 110 and the second housing 120 as a whole. It is worth noting that at the connection between the first housing 110 and the second housing 120, there is a space expanded inside to make room for placing the first side gear 220, the second side gear 230 and the planetary gear 240. A main reduction gear 800 is also provided outside the second housing 120. The main reduction gear 800 is fixed to the second housing 120 by a fastener to reduce the speed of the high-speed rotating planetary gear 240 shaft 210 to the required output speed.
[0025] In order to prevent the wheels from slipping, a push plate 400 is provided on the side of the second side gear 230 away from the planetary gear 240. An opening for accommodating the push plate 400 is provided on the second housing 120, and a meshing tooth is provided on one end of the push plate 400 close to the second side gear 230 for meshing with the second side gear 230. An elastic member is also provided between the push plate 400 and the second side gear 230, and the elastic member is sleeved on the side of the second side gear 230 close to the push plate 400 to separate the push plate 400 from the second side gear 230. The end of the push plate 400 away from the second side gear 230 abuts against the coil assembly 300, and the coil assembly 300 is provided on the outside of the second housing 120. A washer 500 is provided on one end of the coil assembly 300 close to the push plate 400, and an end bearing 600 is provided between the washer 500 and the push plate 400. The coil assembly 300 pushes the push plate 400 along the length direction of the axis 210 of the planetary gear 240.
[0026] When the coil assembly 300 is powered on, the coil assembly 300 pushes the push plate 400 along the length direction of the planetary gear 240 shaft 210 toward the second half-shaft gear 230, and the push plate 400 compresses the elastic member disposed between it and the second half-shaft gear 230, and meshes with the second half-shaft gear 230. Since the push plate 400 is disposed on the second housing 120, the second half-shaft gear 230 is connected to the second housing 120, thereby causing the second half-shaft gear 230 to stop rotating and slip, thereby avoiding the phenomenon that the power of the entire vehicle is concentrated on the slipping wheel, so that the power of the entire vehicle can be evenly distributed, and the vehicle can be freed. It is worth emphasizing that in order to prevent the coil assembly 300 from falling off on the second housing 120, a stopper 700 for preventing the coil assembly 300 from falling off is provided at one end of the coil assembly 300 away from the push plate 400.
[0027] It is worth noting that when the coil is continuously energized, the thrust applied by the coil assembly 300 to the push plate 400 always exists, and the second side gear 230 remains in meshing with the push plate 400, which is a locked state. When the coil assembly 300 is powered off, the thrust is eliminated, and the elastic member provided on the second side gear 230 pushes the push plate 400 away through the restoring force obtained by compression, and the contact meshing state is restored, thereby restoring the adjustment function of the differential.
[0028] In summary, according to a differential locking structure proposed by the utility model, a push plate is arranged between the second half-shaft gear and the coil assembly, and the push plate is pushed by the coil assembly to engage with the second half-shaft gear, so that the half-shaft gear stops rotating and slipping, and then the wheel stops slipping. Specifically, the differential locking structure includes a housing assembly, an axle assembly arranged inside the housing assembly, a coil assembly arranged on the housing assembly, and a push plate arranged between the coil assembly and the axle assembly. The axle assembly includes a planetary gear shaft passing through the housing assembly, a first half-shaft gear and a second half-shaft gear arranged on the planetary gear shaft, and a planetary gear arranged between the first half-shaft gear and the second half-shaft gear, and the two sides of the planetary gear are respectively engaged with the first half-shaft gear and the second half-shaft gear. The push plate is arranged between the second half-shaft gear and the coil assembly, and the coil assembly is energized to push the push plate close to the second half-shaft gear to engage with the second half-shaft gear. Since the two sides of the planetary gear are respectively meshed with the first half-shaft gear and the second half-shaft gear, when the push plate is pushed forward to mesh with the second half-shaft gear, the second half-shaft gear stops rotating and slips, so that the power of the whole vehicle is not concentrated on the slipping wheel, and the power is reasonably distributed to get the vehicle out of trouble.
[0029] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0030] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A differential locking structure, characterized in that: It comprises a housing component, an axle component arranged inside the housing component, a coil component arranged on the housing component, and a push plate arranged between the coil component and the axle component; The axle assembly includes a planetary gear shaft passing through the housing assembly, a first half-shaft gear and a second half-shaft gear arranged on the planetary gear shaft, and a planetary gear arranged between the first half-shaft gear and the second half-shaft gear. The push plate is arranged between the second half-shaft gear and the coil assembly. The coil assembly is energized to push the push plate close to the second half-shaft gear and mesh with the second half-shaft gear to prevent the second half-shaft gear from slipping due to self-rotation.
2. The differential locking structure according to claim 1, characterized in that: The housing assembly includes a first housing disposed outside the first side gear and a second housing disposed outside the second side gear, and the first housing and the second housing are enclosed to accommodate the wheel shaft assembly.
3. The differential locking structure according to claim 2, characterized in that: One end of the push plate close to the second side gear is provided with teeth for meshing with the second side gear.
4. The differential locking structure according to claim 3, characterized in that: An elastic member is also provided between the push plate and the second half-shaft gear, and the elastic member is sleeved on a side of the second half-shaft gear close to the push plate to separate the push plate from the second half-shaft gear.
5. The differential locking structure according to claim 1, characterized in that: The coil assembly is arranged outside the second shell, a washer is provided at one end of the coil assembly close to the push plate, an end bearing is provided between the washer and the push plate, and the coil assembly pushes the push plate along the length direction of the planetary gear shaft.
6. The differential locking structure according to claim 5, characterized in that: One end of the coil assembly away from the push plate is provided with a limiting piece for preventing the coil assembly from falling off.
7. The differential locking structure according to claim 6, characterized in that: A main reduction gear is also provided on the outside of the second shell, and the main reduction gear is fixed to the second shell by a fastener.