CN214412470U - Motor shaft extension end sealing structure and vehicle - Google Patents
Motor shaft extension end sealing structure and vehicle Download PDFInfo
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- CN214412470U CN214412470U CN202022849785.3U CN202022849785U CN214412470U CN 214412470 U CN214412470 U CN 214412470U CN 202022849785 U CN202022849785 U CN 202022849785U CN 214412470 U CN214412470 U CN 214412470U
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Abstract
The utility model relates to a motor shaft stretches end seal structure and vehicle. Motor shaft extension end seal structure includes: a motor end cover; the motor shaft is rotatably assembled on the motor end cover; the first oil seal is arranged in a radial interval between the motor end cover and the motor shaft; further comprising: the second oil seal is a shaft surface oil seal, is sleeved on the motor shaft and is positioned on the front side of the motor end cover; the axial surface oil seal comprises: the oil seal shell is of a sleeve-shaped structure, is sleeved and fixed on the motor shaft and forms a seal with the motor shaft; an annular groove is formed in the front side face of the motor end cover, the rear end portion of the oil seal shell is inserted into the annular groove, and gaps are formed among the rear end portion of the oil seal shell, the side wall of the annular groove and the bottom wall of the groove to form a labyrinth structure; and the annular sealing element is fixed on the oil seal shell and is positioned in an inner cavity formed by the oil seal shell, and the annular sealing element is provided with a sealing lip which is in sliding sealing fit with the front side surface of the motor end cover.
Description
Technical Field
The utility model relates to a motor shaft stretches end seal structure and vehicle.
Background
The motor outputs power to the outside and needs to stretch the motor shaft out of the motor end cover, and one end of the motor shaft stretching out of the motor end cover is the shaft stretching end. The driving motor of the new energy automobile is installed on a vehicle chassis, and the accumulated water on the road surface can enter the motor through the matching part of the motor shaft extension end and the motor end cover, so that the motor fault is caused, and even the motor is burnt. Therefore, sealing is needed to be done at the matching position of the motor shaft extension end and the motor end cover.
Chinese patent with the publication number CN208078786U discloses a sealing structure for an extending end of a motor shaft, which comprises a motor end cover and the extending end of the motor shaft, wherein the extending end of the motor shaft is mounted on the motor end cover through a bearing, a double oil seal structure is arranged between the motor end cover and the extending end of the motor shaft, the double oil seal structure comprises an oil seal seat, an outer oil seal and an inner oil seal are arranged in the oil seal seat, and the two oil seals are in interference fit with the oil seal seat; in order to avoid muddy water splashing on the outside oil seal, the motor shaft is sleeved with a mud blocking ring positioned on the outside of the outside oil seal so as to protect the outside oil seal.
Although the mud guard ring can play a certain protection role on the oil seal, the structure of the mud guard ring is simpler, only one protection can be realized, and the protection performance of the oil seal is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a motor shaft extension end sealing structure, which solves the technical problem that the sealing structure of the motor shaft extension end in the prior art is only provided with one protection at the outer side of an oil seal, which leads to poorer protection performance of the oil seal; the utility model aims at providing a vehicle to solve the vehicle that the motor shaft among the prior art stretched end seal structure and used when passing through ponding road surface, ponding can enter into fender mud ring inboard from the clearance between fender mud ring and the oil blanket seat, can accelerate outside oil blanket wearing and tearing, and then influences the technical problem of vehicle operation.
In order to achieve the above object, the utility model discloses motor shaft stretches end seal structure's technical scheme is:
motor shaft extension end seal structure includes:
a motor end cover;
the motor shaft is rotatably assembled on the motor end cover and extends forwards out of the motor end cover;
the first oil seal is arranged in a radial interval between the motor end cover and the motor shaft and is used for realizing the sealing of the motor end cover and the motor shaft;
further comprising:
the second oil seal is a shaft surface oil seal, is sleeved on the motor shaft and is positioned on the front side of the motor end cover;
the axial surface oil seal comprises:
the oil seal shell is of a sleeve-shaped structure, is sleeved and fixed on the motor shaft and forms a seal with the motor shaft;
an annular groove is formed in the front side face of the motor end cover, the rear end portion of the oil seal shell is inserted into the annular groove, and gaps are formed among the rear end portion of the oil seal shell, the side wall of the annular groove and the bottom wall of the groove to form a labyrinth structure;
and the annular sealing element is fixed on the oil seal shell and is positioned in an inner cavity formed by the oil seal shell, and the annular sealing element is provided with a sealing lip which is in sliding sealing fit with the front side surface of the motor end cover.
The beneficial effects are that: the second oil seal is arranged on the motor shaft, so that the annular sealing piece of the second oil seal is in sliding sealing fit with the front side face of the motor end cover through the sealing lip to form protection, accumulated water is prevented from entering the inner side of the annular sealing piece from the space between the sealing lip and the motor end cover when a vehicle passes through a water accumulating path, the first oil seal can be protected, and the service life of the first oil seal is prolonged; in addition, the rear end of the oil seal shell of the second oil seal is inserted into the annular groove in the front side face of the motor end cover to form a labyrinth structure, and the labyrinth structure also forms protection, so that accumulated water is not easy to contact with an annular sealing element. Above-mentioned twice protection can be better plays the guard action to first oil blanket, has improved the life of first oil blanket.
Furthermore, an annular step is arranged on the front side face of the oil seal shell at a position close to the edge, so that the oil seal shell forms a water slinging ring.
The beneficial effects are that: the splashed muddy water can be effectively prevented from impacting the annular sealing element.
Further, a space located outside the annular step in the radial direction of the oil enclosure body is an open space.
The beneficial effects are that: the design is convenient for the muddy water thrown out to be free from obstruction, and is favorable for throwing the muddy water.
Further, an accommodating cavity is formed among the annular sealing element, the motor end cover and the motor shaft and used for storing lubricating media.
The beneficial effects are that: the lubricating medium is stored in the accommodating cavity, so that the abrasion speed of the sealing lip of the annular sealing element can be reduced, and the service life is prolonged.
Furthermore, the motor end cover comprises an end cover body and an end cover plate, wherein the end cover plate is positioned on the front side of the end cover body and is fixedly assembled on the end cover body;
the first oil seals are arranged in two numbers, one of the two first oil seals is arranged on the end cover plate, and the other one of the two first oil seals is arranged on the end cover body.
The beneficial effects are that: the end cover plate is detached, so that the first oil seal can be taken out of the motor end cover, and the first oil seal is convenient to overhaul.
In order to achieve the above object, the utility model discloses the technical scheme of vehicle is:
the vehicle comprises a vehicle body, wherein a driving motor is arranged on the vehicle body, and a motor shaft extension end sealing structure is arranged on the driving motor;
motor shaft extension end seal structure includes:
a motor end cover;
the motor shaft is rotatably assembled on the motor end cover and extends forwards out of the motor end cover;
the first oil seal is arranged in a radial interval between the motor end cover and the motor shaft and is used for realizing the sealing of the motor end cover and the motor shaft;
further comprising:
the second oil seal is a shaft surface oil seal, is sleeved on the motor shaft and is positioned on the front side of the motor end cover;
the axial surface oil seal comprises:
the oil seal shell is of a sleeve-shaped structure, is sleeved and fixed on the motor shaft and forms a seal with the motor shaft;
an annular groove is formed in the front side face of the motor end cover, the rear end portion of the oil seal shell is inserted into the annular groove, and gaps are formed among the rear end portion of the oil seal shell, the side wall of the annular groove and the bottom wall of the groove to form a labyrinth structure;
and the annular sealing element is fixed on the oil seal shell and is positioned in an inner cavity formed by the oil seal shell, and the annular sealing element is provided with a sealing lip which is in sliding sealing fit with the front side surface of the motor end cover.
The beneficial effects are that: the second oil seal is arranged on the motor shaft, so that the annular sealing piece of the second oil seal is in sliding sealing fit with the front side face of the motor end cover through the sealing lip to form protection, accumulated water is prevented from entering the inner side of the annular sealing piece from the space between the sealing lip and the motor end cover when a vehicle passes through a water accumulating path, the first oil seal can be protected, and the service life of the first oil seal is prolonged; in addition, the rear end of the oil seal shell of the second oil seal is inserted into the annular groove in the front side face of the motor end cover to form a labyrinth structure, and the labyrinth structure also forms protection, so that accumulated water is not easy to contact with an annular sealing element. Above-mentioned twice protection can be better plays the guard action to first oil blanket, has improved the life of first oil blanket.
Furthermore, an annular step is arranged on the front side face of the oil seal shell at a position close to the edge, so that the oil seal shell forms a water slinging ring.
The beneficial effects are that: the splashed muddy water can be effectively prevented from impacting the annular sealing element.
Further, a space located outside the annular step in the radial direction of the oil enclosure body is an open space.
The beneficial effects are that: the design is convenient for the muddy water thrown out to be free from obstruction, and is favorable for throwing the muddy water.
Further, an accommodating cavity is formed among the annular sealing element, the motor end cover and the motor shaft and used for storing lubricating media.
The beneficial effects are that: the lubricating medium is stored in the accommodating cavity, so that the abrasion speed of the sealing lip of the annular sealing element can be reduced, and the service life is prolonged.
Furthermore, the motor end cover comprises an end cover body and an end cover plate, wherein the end cover plate is positioned on the front side of the end cover body and is fixedly assembled on the end cover body;
the first oil seals are arranged in two numbers, one of the two first oil seals is arranged on the end cover plate, and the other one of the two first oil seals is arranged on the end cover body.
The beneficial effects are that: the end cover plate is detached, so that the first oil seal can be taken out of the motor end cover, and the first oil seal is convenient to overhaul.
Drawings
Fig. 1 is a schematic structural view of a sealing structure of an extending end of a motor shaft according to embodiment 1 of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is a schematic diagram of the pumping effect of the frame oil seal of FIG. 1;
FIG. 4 is a schematic structural view of the vehicle of the present invention;
in the figure: 101-a vehicle body; 102-a drive motor; 1-a flange; 2-motor shaft; 3-oil seal housing; 4-an annular seal; 5-sealing the lip; 6-an annular groove; 7-outer side framework oil seal; 8-an oil storage chamber; 9-inner side framework oil seal; 10-end cover plate; 11-a sealing ring; 12-a bearing; 13-an end cap body; 14-shaft surface oil seal; 15-a containment chamber; 16-oil seal lip.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. Furthermore, the terms "upper" and "lower" are based on the orientation and positional relationship shown in the drawings and are only for convenience of description of the present invention, and do not indicate that the referred device or component must have a specific orientation, and thus, should not be construed as limiting the present invention.
The features and properties of the present invention are described in further detail below with reference to examples.
The utility model discloses motor shaft stretches end seal structure's embodiment 1:
as shown in fig. 1, the motor shaft extension end sealing structure includes a motor shaft 2 and a motor end cover, a bearing 12 is arranged between the motor end cover and the motor shaft 2, and the motor shaft 2 is rotatably assembled on the motor end cover through the bearing 12 and extends forwards out of the motor end cover. A flange 1 is fixedly arranged on the front side of a motor end cover on a motor shaft 2, and the flange 1 is used for transmitting torque.
In order to ensure the sealing performance between the motor shaft 2 and the motor end cover, a framework oil seal is arranged in a radial interval between the motor shaft 2 and the motor end cover, and the framework oil seal forms a first oil seal. Specifically, the motor end cover comprises an end cover body 13 and an end cover plate 10, wherein the end cover plate 10 is positioned on the front side of the end cover body 13, and the end cover plate 10 is fixedly assembled on the end cover body 13; the framework oil seals are arranged in two numbers, namely an outer framework oil seal 7 and an inner framework oil seal 9, mounting grooves with opposite openings are formed in the end cover plate 10 and the end cover body 13, the outer framework oil seal 7 is installed in the mounting groove of the end cover plate 10 in an interference mode, and the inner framework oil seal 9 is installed in the mounting groove of the end cover body 13 in an interference mode so as to form good sealing between the motor end cover and the motor shaft 2. The framework oil seal in the embodiment is a mature product in the prior art, and is not described herein again. Wherein, the mounting groove of end cover apron 10 and the mounting groove of end cover body 13 form the oil blanket mounting groove jointly, and oil blanket mounting groove opening is towards motor shaft 2. In other embodiments, the first oil seal may be a frameless oil seal or a springless oil seal.
As shown in fig. 1 and 2, the sealing lips of the outer side skeleton oil seal 7 and the inner side skeleton oil seal 9 are in close contact with the motor shaft 2, and the outer side skeleton oil seal 7 and the inner side skeleton oil seal 9 are arranged at intervals in the front-rear direction to form an oil storage chamber 8 between the two skeleton oil seals, so that the two skeleton oil seals cannot move in the front-rear direction due to the fact that the outer side skeleton oil seal 7 and the inner side skeleton oil seal 9 are installed in corresponding installation grooves in an interference mode. When assembling two skeleton oil seals, can add lubricating oil in the oil storage chamber 8 that forms, for the skeleton oil seal provides lubricated environment, guarantee the skeleton oil seal normal operating under the lubricated condition to the life and the sealing reliability of extension skeleton oil seal. Wherein, be equipped with sealing washer 11 between end cover apron 10 and the end cover body 13 to avoid lubricating oil to reveal.
As shown in fig. 1 and 2, the outer side of the end cover plate 10 is provided with a shaft surface oil seal 14, and the shaft surface oil seal 14 is a second oil seal. The shaft surface oil seal 14 comprises an oil seal shell 3 and an annular sealing element 4, the oil seal shell 3 is of a sleeve-shaped structure and is a metal shell, the oil seal shell 3 is sleeved on the motor shaft 2 in an interference mode, no gap exists between the oil seal shell 3 and the motor shaft 2 so as to guarantee sealing, and the oil seal shell 3 and the motor shaft 2 rotate together.
In the present embodiment, the oil seal housing 3 has an inner cavity, and the annular seal member 4 is mounted in the inner cavity of the oil seal housing 3 and rotates together with the oil seal housing 3. Be equipped with sealing lip 5 on the annular sealing member 4, sealing lip 5 cooperates with the leading flank sliding seal of end cover apron 10, when the vehicle passes through ponding and water level arrival motor shaft 2, can avoid muddy water to enter into the inboard skeleton oil blanket that contacts of annular sealing member 4, plays the guard action to the skeleton oil blanket, ensures that the lubricating oil in the oil storage chamber 8 is not polluted, has improved the live time of lubricating oil and the life of skeleton oil blanket.
In this embodiment, the space located radially outside the annular step in the oil seal housing 3 is an open space, so that the thrown muddy water is not obstructed, which is beneficial to throwing the muddy water.
As shown in fig. 1 and 2, an annular groove 6 is provided on the front side surface of the end cover plate 10, and the rear end portion of the oil seal housing 3 is inserted into the annular groove 6 to form a labyrinth structure. In this embodiment, a gap is left between the rear end of the oil seal housing 3 and the bottom wall of the annular groove 6, and a gap is left between the rear end of the oil seal housing 3 and the two groove walls of the annular groove 6, so that the friction between the oil seal housing 3 and the end cover plate 10 is avoided during the rotation of the motor shaft 2, and the energy loss is reduced.
In this implementation, be equipped with annular step in the position that is close to the edge on the leading flank of oil blanket casing 3 for oil blanket casing 3 forms and gets rid of the water ring, gets rid of the water ring and not only can block the muddy water impact annular seal 4 that splashes, and the labyrinth structure that the rear end tip of oil blanket casing and annular groove 6 formed can play the first way of blocking muddy water and seal in addition, makes muddy water be difficult to contact annular seal. In this embodiment, the step facade of annular step is the inclined plane to the throw-away of muddy water is convenient for. In other embodiments, the step riser of the annular step is disposed parallel to the axis of the motor shaft.
In this embodiment, an accommodating cavity 15 is formed among the annular sealing element 4, the end cover plate 10 and the motor shaft 2, and when the shaft surface oil seal 14 is assembled, lubricating oil is added into the accommodating cavity 15 to slow down the wear rate of the sealing lip 5 and prolong the service life of the annular sealing element 4.
In this embodiment, the lubricating oil constitutes a lubricating medium.
As shown in fig. 3, for example, the inner frame oil seal 9 includes an oil seal lip 16, the oil seal lip 16 is formed by two intersecting inclined surfaces, an included angle α formed by the inclined surface contacting with the lubricating oil and the axial direction of the motor shaft 2 is an oil side angle, and an included angle β formed by the inclined surface contacting with the air and the axial direction of the motor shaft 2 is an air side angle. In a certain rotation speed range, there is a relatively large and liquid-filled gap between the oil seal frame 9 and the motor shaft 2, and when α > β, a pumping effect toward the lubricant side is generated to prevent leakage of lubricant between the two frame oil seals.
The utility model discloses motor shaft stretches end seal structure's embodiment 2:
the difference with embodiment 1 lies in, the motor end cover includes end cover body 13 and end cover plate 10, and end cover plate 10 is located the front side of end cover body 13 and fixed assembly on end cover body 13, only needs to pull down end cover plate 10, just can accomplish the dismouting of skeleton oil blanket, and the dismouting is comparatively convenient, and in this embodiment, the motor end cover is structure as an organic whole, pulls down motor end cover is whole to realize the dismouting of skeleton oil blanket.
The utility model discloses motor shaft stretches end seal structure's embodiment 3:
the difference with embodiment 1 is that in embodiment 1, the number of the framework oil seals is two to increase the sealing formation, and in this embodiment, when one framework oil seal can be well sealed, one framework oil seal is arranged between the motor end cover and the motor shaft.
The utility model discloses motor shaft stretches end seal structure's embodiment 4:
the difference with embodiment 1 lies in, in embodiment 1, outside skeleton oil blanket is installed on the end cover apron, and inboard skeleton oil blanket is installed on the end cover body to the dismouting of two skeleton oil blankets, in this embodiment, because inboard skeleton oil blanket is difficult to contact muddy water, so the life of inboard skeleton oil blanket is longer relatively, all installs outside skeleton oil blanket and inboard skeleton oil blanket on the end cover body, and at this moment, the recess on the end cover body is great, and the end cover apron only plays the shutoff effect.
The utility model discloses the concrete embodiment of vehicle, as shown in fig. 4, the vehicle in this embodiment includes automobile body 101, installs driving motor 102 on the automobile body 101, and the last motor shaft that uses of driving motor 102 stretches end seal structure and the motor shaft stretches end seal structure of above-mentioned motor shaft and any one in 1 to 4 of the concrete embodiment of seal structure the same, no longer describes here.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. Motor shaft extension end seal structure includes:
a motor end cover;
the motor shaft is rotatably assembled on the motor end cover and extends forwards out of the motor end cover;
the first oil seal is arranged in a radial interval between the motor end cover and the motor shaft and is used for realizing the sealing of the motor end cover and the motor shaft;
it is characterized by also comprising:
the second oil seal is a shaft surface oil seal, is sleeved on the motor shaft and is positioned on the front side of the motor end cover;
the axial surface oil seal comprises:
the oil seal shell is of a sleeve-shaped structure, is sleeved and fixed on the motor shaft and forms a seal with the motor shaft;
an annular groove is formed in the front side face of the motor end cover, the rear end portion of the oil seal shell is inserted into the annular groove, and gaps are formed among the rear end portion of the oil seal shell, the side wall of the annular groove and the bottom wall of the groove to form a labyrinth structure;
and the annular sealing element is fixed on the oil seal shell and is positioned in an inner cavity formed by the oil seal shell, and the annular sealing element is provided with a sealing lip which is in sliding sealing fit with the front side surface of the motor end cover.
2. The motor shaft extension end sealing structure according to claim 1, wherein an annular step is provided on a front side surface of the oil seal housing at a portion near an edge, so that the oil seal housing forms a water slinger.
3. The motor shaft extension end seal structure according to claim 2, wherein a space located radially outside the annular step in the oil seal housing is an open space.
4. The motor shaft extension end sealing structure according to claim 1, 2 or 3, wherein a receiving cavity is formed among the annular sealing member, the motor end cover and the motor shaft, and the receiving cavity is used for storing a lubricating medium.
5. The motor shaft extension end sealing structure according to claim 1, 2 or 3, wherein the motor end cover comprises an end cover body and an end cover plate, and the end cover plate is positioned on the front side of the end cover body and fixedly assembled on the end cover body;
the first oil seals are arranged in two numbers, one of the two first oil seals is arranged on the end cover plate, and the other one of the two first oil seals is arranged on the end cover body.
6. The vehicle comprises a vehicle body, wherein a driving motor is arranged on the vehicle body, and a motor shaft extension end sealing structure is arranged on the driving motor;
motor shaft extension end seal structure includes:
a motor end cover;
the motor shaft is rotatably assembled on the motor end cover and extends forwards out of the motor end cover;
the first oil seal is arranged in a radial interval between the motor end cover and the motor shaft and is used for realizing the sealing of the motor end cover and the motor shaft;
it is characterized by also comprising:
the second oil seal is a shaft surface oil seal, is sleeved on the motor shaft and is positioned on the front side of the motor end cover;
the axial surface oil seal comprises:
the oil seal shell is of a sleeve-shaped structure, is sleeved and fixed on the motor shaft and forms a seal with the motor shaft;
an annular groove is formed in the front side face of the motor end cover, the rear end portion of the oil seal shell is inserted into the annular groove, and gaps are formed among the rear end portion of the oil seal shell, the side wall of the annular groove and the bottom wall of the groove to form a labyrinth structure;
and the annular sealing element is fixed on the oil seal shell and is positioned in an inner cavity formed by the oil seal shell, and the annular sealing element is provided with a sealing lip which is in sliding sealing fit with the front side surface of the motor end cover.
7. The vehicle of claim 6, characterized in that the oil sealed housing is provided with an annular step on its front side near the rim, so that the oil sealed housing forms a slinger.
8. The vehicle according to claim 7, characterized in that the space located radially outside the annular step in the oil seal housing is an open space.
9. The vehicle of claim 6 or 7 or 8, characterized in that a receiving cavity is formed among the annular sealing element, the motor end cover and the motor shaft, and the receiving cavity is used for storing lubricating media.
10. The vehicle of claim 6, 7 or 8, characterized in that the motor end cover comprises an end cover body and an end cover plate, wherein the end cover plate is arranged on the front side of the end cover body and is fixedly assembled on the end cover body;
the first oil seals are arranged in two numbers, one of the two first oil seals is arranged on the end cover plate, and the other one of the two first oil seals is arranged on the end cover body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022849785.3U CN214412470U (en) | 2020-12-02 | 2020-12-02 | Motor shaft extension end sealing structure and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022849785.3U CN214412470U (en) | 2020-12-02 | 2020-12-02 | Motor shaft extension end sealing structure and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214412470U true CN214412470U (en) | 2021-10-15 |
Family
ID=78035904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022849785.3U Active CN214412470U (en) | 2020-12-02 | 2020-12-02 | Motor shaft extension end sealing structure and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214412470U (en) |
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2020
- 2020-12-02 CN CN202022849785.3U patent/CN214412470U/en active Active
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Address after: 450061 Yudao Road, Guancheng District, Zhengzhou City, Henan Province Patentee after: Yutong Bus Co.,Ltd. Address before: No.1, Shibali Heyu Road, Guancheng Hui District, Zhengzhou City, Henan Province Patentee before: ZHENGZHOU YUTONG BUS Co.,Ltd. |