Electric wheel edge power interruption device

Abstract

The utility model provides an electric wheel edge power interruption device. The electric wheel edge power interruption device comprises a first frame, a gear shifting combination gear, a gear shifting shaft, a sun gear and a second frame. The first frame, the gear shifting combination gear, the gear shifting shaft and the sun gear are coaxially arranged. The gear shifting combination gear is in sliding connection with the first frame in the axial direction; the sun gear is located on the sliding stroke of the gear shifting combination teeth, and end face combination teeth meshed with each other are arranged at the ends, adjacent to the gear shifting combination teeth, of the sun gear. The gear shifting combination gear is rotatably mounted at one end of the gear shifting shaft; a shaft hole is formed in the second frame, and the other end of the gear shifting shaft is inserted into the shaft hole; a receding hole is formed in the axis direction of the sun gear, the gear shifting shaft extends into the gear shifting shaft, and a gap is formed between the gear shifting shaft and the receding hole. The device is simple in structure and small in occupied space, and effectively solves the problem that a complex power interruption structure cannot be arranged due to the fact that part of electric wheel edge spaces are limited.

Description

Technical Field

[0001] The utility model relates to the technical field of electric wheel rims for new energy vehicles, and in particular to an electric wheel rim power interruption device. Background Art

[0002] Some vehicles with electric wheel-ends rely on their own power to run at low speeds on poor roads, while using a towing vehicle for high-speed towing on good roads. When towing at high speeds, the high-speed reverse towing wheel-end motor may damage the motor. Therefore, the electric wheel-end power must be disconnected during high-speed towing.

[0003] The general electric wheel-side power interruption structure is relatively complex and occupies a large space. However, the space around the electric wheel is generally limited, so a method with a simple structure and small space occupation is needed to achieve power interruption. Utility Model Content

[0004] In response to the above-mentioned problems existing in the prior art, the technical problem to be solved by the present invention is: the general electric wheel-side power interruption structure is relatively complex and occupies a large space, while the general electric wheel-side space is limited, so a method with a simple structure and small space occupation is needed to achieve power interruption.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: an electric wheel-side power interruption device comprises: a first frame, a shift coupling tooth, a shift shaft, a sun gear and a second frame;

[0006] The first frame, the shift coupling tooth, the shift shaft and the sun gear are coaxially arranged; the shift coupling tooth is slidably connected to the first frame in the axial direction; the sun gear is located on the sliding stroke of the shift coupling tooth, and the adjacent ends of the sun gear and the shift coupling tooth are provided with end surface coupling teeth that mesh with each other;

[0007] The shift coupling tooth is rotatably mounted on one end of the shift shaft; an axial hole is provided on the second frame, and the other end of the shift shaft is inserted into the axial hole; an avoidance hole is provided in the axial direction of the sun gear, and the shift shaft extends into the shift shaft, and a gap is provided between the shift shaft and the avoidance hole.

[0008] Preferably, it also includes: a bearing, a retaining ring, a first bushing and a bolt; a mounting groove is coaxially opened on the shift coupling tooth; the inner ring of the bearing cooperates with the mounting groove, one end of the inner ring of the bearing abuts against the inner shoulder in the mounting groove, and the other end of the inner ring of the bearing abuts against the retaining ring; the retaining ring is clamped in the mounting groove; the inner ring of the bearing is sleeved on the shift shaft, one end of the inner ring of the bearing abuts against the outer shoulder on the shift shaft, and the other end of the inner ring of the bearing abuts against the first bushing; the first bushing is mounted on the shift shaft by bolts.

[0009] Preferably, the shift engaging tooth is slidingly connected to the first frame via a spline.

[0010] Preferably, the shift shaft is inserted into the shaft hole through a second bushing.

[0011] Preferably, an oil seal is provided at one end of the shaft hole away from the shift coupling tooth, the oil seal sleeve is provided on the shift shaft, and the oil seal is installed on the second frame.

[0012] Preferably, it also includes: a pin shaft; two positioning holes that are plugged into the pin shaft are sequentially opened in the length direction of the shift shaft; a plug hole that cooperates with the pin shaft is opened on the second frame; the plug hole and the two positioning holes are arranged parallel to the axis of the shift shaft.

[0013] Preferably, two pin shafts are symmetrically arranged, and the two pin shafts are connected by threads.

[0014] Compared with the prior art, the present invention has at least the following advantages:

[0015] In the utility model, the device is suitable for some vehicles using electric wheel sides, which rely on their own power to run at low speed on poor roads, and use traction vehicles to tow at high speed on good roads. In order to prevent the high-speed anti-tow wheel side motor from being damaged during towing, the electric wheel side power needs to be interrupted; and by arranging the shift shaft and inserting it into the avoidance hole of the sun gear, the space occupied can be greatly reduced. Therefore, the device has a simple structure and small space occupation, which effectively solves the problem that the space of some electric wheel sides is limited and a complex power interruption structure cannot be arranged. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention, the following briefly introduces the drawings required for use in the specific embodiments. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0017] Figure 1 This is a schematic diagram of an electric wheel-side power interruption device provided in an embodiment of the present utility model.

[0018] Figure markings: 1-first frame, 2-shift engaging tooth, 3-shift shaft, 4-sun gear, 5-second frame, 6-shaft hole, 7-avoidance hole, 8-bearing, 9-retaining ring, 10-first bushing, 11-bolt, 12-mounting groove, 13-second bushing, 14-oil seal, 15-pin shaft, 16-positioning hole, 17-plug hole. DETAILED DESCRIPTION

[0019] The following embodiments of the technical solution of the present invention are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0020] In the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, 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 should not be understood as a limitation to the present invention.

[0021] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0022] See also Figure 1 , the utility model provides an embodiment: an electric wheel-side power interruption device, comprising: a first frame 1, a shift coupling tooth 2, a shift shaft 3, a sun gear 4 and a second frame 5; the first frame 1, the shift coupling tooth 2, the shift shaft 3 and the sun gear 4 are coaxially arranged; the shift coupling tooth 2 is slidably connected to the first frame 1 in the axial direction; the sun gear 4 is located on the sliding stroke of the shift coupling tooth 2, and the adjacent ends of the sun gear 4 and the shift coupling tooth 2 are provided with end face coupling teeth that mesh with each other; the shift coupling tooth 2 is rotatably mounted on one end of the shift shaft 3; a shaft hole 6 is opened on the second frame 5, and the other end of the shift shaft 3 is inserted into the shaft hole 6; an avoidance hole 7 is opened in the axial direction of the sun gear 4, the shift shaft 3 extends into the shift shaft 3, and a gap is provided between the shift shaft 3 and the avoidance hole 7.

[0023] During specific implementation, the shift coupling tooth 2 is driven by the shift shaft 3 to move toward the sun gear 4, so that the shift coupling tooth 2 and the two end surface coupling teeth on the sun gear 4 are meshed, so that power can be transmitted to the first frame 1, the shift coupling tooth 2 and the sun gear 4; the electric drive wheel side reducer is in gear, transmitting power; the shift coupling tooth 2 is driven by the shift shaft 3 to move in the direction away from the sun gear 4, so that the shift coupling tooth 2 and the two end surface coupling teeth on the sun gear 4 are separated, thereby realizing the power interruption between the shift coupling tooth 2 and the sun gear 4; the electric drive wheel side reducer is in neutral gear, and the power is interrupted;

[0024] To this end, the device is suitable for some vehicles using electric wheel sides that rely on their own power to run at low speed on poor roads, and use traction vehicles for high-speed towing on good roads. In order to prevent the high-speed anti-tow wheel side motor from being damaged during towing, the electric wheel side power needs to be interrupted; and by arranging the shift shaft 3 and inserting it into the avoidance hole 7 of the sun gear 4, the space occupied can be greatly reduced. For this reason, the device has a simple structure and occupies little space, which effectively solves the problem that the space of some electric wheel sides is limited and a complex power interruption structure cannot be arranged.

[0025] See also Figure 1 In other embodiments, the shift coupling tooth 2 is coaxially provided with a mounting groove 12. The inner ring of the bearing 8 engages with the mounting groove 12, with one end of the inner ring of the bearing 8 abutting the inner shoulder of the mounting groove 12 and the other end of the inner ring of the bearing 8 abutting the retaining ring 9. The retaining ring 9 is engaged in the mounting groove 12. The inner ring of the bearing 8 is sleeved on the shift shaft 3, with one end of the inner ring of the bearing 8 abutting the outer shoulder of the shift shaft 3 and the other end of the inner ring of the bearing 8 abutting the first bushing 10. The first bushing 10 is mounted on the shift shaft 3 via the bolt 11. In a specific implementation, the arrangement of the bearing 8, retaining ring 9, first bushing 10, and bolt 11 enables the shift coupling tooth 2 to be rotatably mounted on the shift shaft 3. In this way, the shift coupling tooth 2 and the shift shaft 3 can rotate independently of each other, but the axial direction is fixed, and the shift shaft 3 can control the axial movement of the shift coupling tooth 2.

[0026] See also Figure 1 In other embodiments, the shift coupling tooth 2 is slidingly connected to the first frame 1 through a spline; thereby, the power between the shift coupling tooth 2 and the first frame 1 can be stably transmitted through the spline, and the shift coupling tooth 2 can also move axially.

[0027] See also Figure 1 In other embodiments, the shift shaft 3 is inserted into the shaft hole 6 through the second bushing 13; the second bushing 13 supports the shift shaft 3 to reduce wear, vibration and noise between the shift shaft 3 and the second frame 5.

[0028] See also Figure 1 In other embodiments, an oil seal 14 is provided at one end of the shaft hole 6 away from the shift coupling tooth 2, the oil seal 14 is sleeved on the shift shaft 3, and the oil seal 14 is installed on the second frame 5; through the setting of the oil seal 14, the loss of lubricating oil at the shift shaft 3 and the shaft hole 6 can be reduced.

[0029] See also Figure 1 In another embodiment, the shift shaft 3 further comprises: a pin 15; two positioning holes 16 are defined along the length of the shift shaft 3 and are engaged with the pin 15; and a plug hole 17 is defined on the second frame 5 and is engaged with the pin 15; the plug hole 17 and the two positioning holes 16 are all arranged parallel to the axis of the shift shaft 3. Specifically, when the pin 15 is inserted into the positioning hole 16 near the shift coupling tooth 2, the shift shaft 3 needs to drive the shift coupling tooth 2 toward the sun gear 4, so that the shift coupling tooth 2 and the sun gear 4 engage through the end surface engagement teeth, thereby achieving positioning when the two end surface engagement teeth engage, and thus achieving positioning when power is transmitted; when the pin 15 is inserted into the positioning hole 16 away from the shift coupling tooth 2, the shift shaft 3 needs to drive the shift coupling tooth 2 away from the sun gear 4, so that the shift coupling tooth 2 and the end surface engagement teeth on the sun gear 4 separate, thereby achieving positioning when the two end surface engagement teeth separate, and thus achieving positioning when power is interrupted; in this way, the gear position can be maintained during transmission and interruption. Furthermore, two pin shafts 15 are symmetrically arranged, and the two pin shafts 15 are connected by threads; so that the head ends of the two pin shafts 15 are both in contact with the second frame 5, thereby limiting and fixing the two pin shafts 15; in specific implementation, one end of one of the pin shafts 15 is fixed with a threaded rod, and one end of the other pin shaft 15 is provided with a threaded hole that cooperates with the threaded rod, thereby realizing the connection and fixation between the two pin shafts 15.

[0030] 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 they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. An electric wheel power interruption device, characterized in that: include: a first frame, a shift engaging tooth, a shift shaft, a sun gear, and a second frame; The first frame, the shift coupling tooth, the shift shaft and the sun gear are coaxially arranged; the shift coupling tooth is slidably connected to the first frame in the axial direction; the sun gear is located on the sliding stroke of the shift coupling tooth, and the adjacent ends of the sun gear and the shift coupling tooth are provided with end surface coupling teeth that mesh with each other; The shift coupling tooth is rotatably mounted on one end of the shift shaft; an axial hole is provided on the second frame, and the other end of the shift shaft is inserted into the axial hole; an avoidance hole is provided in the axial direction of the sun gear, and the shift shaft extends into the shift shaft, and a gap is provided between the shift shaft and the avoidance hole.

2. The electric wheel power interruption device according to claim 1, characterized in that: Also includes: A bearing, a retaining ring, a first bushing and a bolt; a mounting groove is coaxially provided on the shift coupling tooth; the inner ring of the bearing cooperates with the mounting groove, one end of the inner ring of the bearing abuts against the inner shoulder in the mounting groove, and the other end of the inner ring of the bearing abuts against the retaining ring; the retaining ring is clamped in the mounting groove; the inner ring of the bearing is sleeved on the shift shaft, one end of the inner ring of the bearing abuts against the outer shoulder on the shift shaft, and the other end of the inner ring of the bearing abuts against the first bushing; the first bushing is mounted on the shift shaft by bolts.

3. The electric wheel power interruption device according to claim 1, characterized in that: The shift engaging teeth are slidably connected to the first frame via splines.

4. The electric wheel power interruption device according to claim 1, characterized in that: The shift shaft is inserted into the shaft hole through a second bushing.

5. The electric wheel power interruption device according to claim 1, characterized in that: An oil seal is provided at one end of the shaft hole away from the shift coupling tooth. The oil seal sleeve is arranged on the shift shaft, and the oil seal is installed on the second frame.

6. The electric wheel power interruption device according to claim 1, characterized in that: Also includes: pin; Two positioning holes are sequentially provided in the length direction of the shift shaft for plugging with the pin shaft; a plug hole is provided on the second frame for plugging with the pin shaft; the plug hole and the two positioning holes are arranged parallel to the axis of the shift shaft.

7. The electric wheel power interruption device according to claim 6, characterized in that: Two pin shafts are symmetrically arranged, and the two pin shafts are connected by threads.

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