Motor fixing mechanism of new energy automobile actuator

Abstract

The utility model relates to a motor fixing mechanism of a new energy automobile actuator, which comprises an upper shell and a lower shell, a cavity for mounting a motor is arranged in the lower shell, and axial mounting seats are oppositely arranged in the cavity; the two ends of the bottom of the motor are positioned by the axial mounting seat, positioning strips are oppositely arranged in the cavity, and the two sides of the motor are positioned by the two positioning strips; through dual positioning of the axial mounting base and the positioning strip, high-precision fixing of the motor in a three-dimensional space is achieved, shaking and deviation of the motor in the working process are effectively avoided, the fastening pieces capable of being elastically deformed are adopted for fastening, and therefore the motor can be fixed more accurately, and the reliability of the motor is improved. The problem of interference fit or overlarge clearance possibly occurring in a traditional hard contact fixing mode is avoided.

Description

Technical Field

[0001] The present application relates to the field of actuator technology, and in particular to a motor fixing mechanism for an actuator of a new energy vehicle. Background Art

[0002] With the rapid development of the new energy vehicle industry, actuators, as key components in electric vehicle powertrains, have a significant impact on the overall vehicle's operating efficiency and safety. The stability and precision of the actuator's mounting structure are crucial for the core power output component of the actuator's motor.

[0003] However, existing actuator designs for new energy electric vehicles generally utilize a hard-contact mounting method for motor fixation, relying primarily on plastic components to hold the motor in place, supplemented by left and right plastic components for position limiting. While this design may theoretically meet basic fixing requirements, in practice, the inevitable tolerances between the plastic components and the motor housing during production can lead to gaps between them, compromising the stability of the mounting. This gap can not only cause the motor to wobble during operation, reducing transmission efficiency, but can also lead to failure of the mounting due to long-term vibration, posing a safety hazard.

[0004] Secondly, if the tolerances between the plastic part and the motor housing are not properly controlled, an interference fit may occur. An interference fit means that the plastic part will exert excessive pressure on the motor housing during assembly. This can not only damage the motor housing, affecting its sealing and durability, but can also cause assembly failure due to difficulty in pressing down smoothly, increasing production costs and cycle time.

[0005] In view of the above problems, a motor fixing mechanism for a new energy vehicle actuator is now designed. Utility Model Content

[0006] The embodiment of the present application provides a motor fixing mechanism for a new energy vehicle actuator to solve the problem in the related art that a gap is easily generated during the installation of the motor in the existing new energy electric vehicle actuator, or the motor is blocked by interference and cannot be pressed down.

[0007] In a first aspect, a motor fixing mechanism for a new energy vehicle actuator is provided, comprising:

[0008] An upper shell and a lower shell, wherein the lower shell has a chamber for installing the motor, and axial mounting seats are relatively arranged inside the chamber; the axial mounting seats position the two ends of the bottom of the motor, and positioning strips are relatively arranged inside the chamber, and two positioning strips position the two sides of the motor;

[0009] A fastening piece is arranged opposite to the bottom of the upper shell body. The fastening piece can be elastically deformed and has a sealed groove for accommodating the end of the motor.

[0010] In some embodiments, both of the axial mounting seats are provided with grooves adapted to the motor, and the grooves are arc-shaped.

[0011] In some embodiments, the positioning bar is located between two axial mounting seats, and one side of the positioning bar is arc-shaped and fits against a side wall of the motor.

[0012] In some embodiments, the fastening sheet is a spring steel sheet or an elastic plastic sheet.

[0013] In some embodiments, the sealed groove is V-shaped, and the two sealed grooves are respectively used to accommodate two ends of the motor.

[0014] In some embodiments, the fastening plate has two through holes formed therein opposite to each other.

[0015] This application provides a motor fixing mechanism for a new energy vehicle actuator. Through dual positioning using an axial mounting base and a positioning bar, it achieves high-precision three-dimensional fixation of the motor, effectively preventing motor shake and offset during operation and improving the actuator's overall performance and stability. The use of elastically deformable fastening tabs not only accommodates motors of varying sizes but also avoids the interference fit and excessive clearance issues that can occur with traditional hard-contact fixing methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 A schematic diagram of a three-dimensional structure provided in an embodiment of the present application;

[0018] Figure 2 A schematic diagram of the three-dimensional structure of the lower shell provided in an embodiment of the present application;

[0019] Figure 3 A schematic diagram of the assembly of the lower housing and the motor provided in an embodiment of the present application;

[0020] Figure 4 Schematic diagram of the upper housing and motor assembly provided in the embodiment of the present application Figure 1 ;

[0021] Figure 5 Schematic diagram of the upper housing and motor assembly provided in the embodiment of the present application Figure 2 .

[0022] In the figure: 1. upper shell; 2. lower shell; 3. chamber; 4. axial mounting seat; 5. positioning strip; 6. fastening plate; 7. sealed groove; 8. through hole. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0024] The embodiment of the present application provides a motor fixing mechanism for a new energy vehicle actuator, which can solve the problem in the related art that gaps are easily generated during the installation of the motor in the existing new energy electric vehicle actuator, or interference fit prevents downward pressure.

[0025] See also Figure 1-Figure 3 A motor fixing mechanism for a new energy vehicle actuator comprises an upper housing 1 and a lower housing 2. The lower housing 2 has a chamber 3 for mounting the motor, and axial mounting seats 4 are positioned within the chamber 3. The axial mounting seats 4 position the two ends of the motor's bottom. Positioning bars 5 are positioned within the chamber 3, and two positioning bars 5 position the two sides of the motor. Fastening tabs 6 are positioned at the bottom of the upper housing 1. The fastening tabs 6 are elastically deformable and have sealed slots 7 for accommodating the motor's ends.

[0026] The upper housing 1 and the lower housing 2 are connected by snapping or bolting to form a housing for mounting the motor.

[0027] Specifically, a chamber 3 specifically for motor installation is designed inside the lower shell 2, and axial mounting seats 4 are arranged relatively inside the chamber 3. When the motor is placed in the chamber 3, the axial mounting seats 4 first accurately position the bottom ends of the motor to ensure the stability of the motor in the vertical direction.

[0028] At the same time, positioning bars 5 are relatively arranged inside the chamber 3. The two positioning bars 5 further position the motor from both sides, limiting the movement of the motor in the horizontal direction, thereby achieving stable fixation of the motor in three-dimensional space.

[0029] The bottom of the upper housing 1 is designed with elastically deformable fastening tabs 6, each with a sealed slot 7 for accommodating the motor end. When the upper housing 1 and lower housing 2 are tightly closed via a snap or bolt connection, the fastening tabs 6, due to their elastic properties, fit tightly around the motor end. The sealed slot 7 ensures that the motor end is completely covered, providing additional tightening force and enhancing the reliability of the motor's fixation.

[0030] Through the dual positioning of the axial mounting seat 4 and the positioning bar 5, the motor is fixed in three-dimensional space with high precision, which effectively avoids the shaking and deviation of the motor during operation and improves the overall performance and stability of the actuator.

[0031] The use of elastically deformable fastening plates 6 for fastening can not only adapt to motors of different sizes, but also provide necessary buffering and adjustment when the motor produces slight deformation due to temperature changes, vibrations and other factors, avoiding the problems of interference fit or excessive gap that may occur in traditional hard contact fixing methods.

[0032] Specifically, in this embodiment, the two axial mounting seats 4 are both provided with grooves adapted to the motor, and the grooves are in an arc shape.

[0033] The arc-shaped groove is based on precise measurement and simulation of the bottom contour of the motor, ensuring that the shape, size and depth of the groove match the bottom of the motor. This helps to quickly position the motor during installation, effectively reduces the gap caused by tolerance, and improves the accuracy of fixation.

[0034] When the motor is placed on the axial mounting base 4, the arc-shaped groove can disperse the pressure from the bottom of the motor on the mounting base, avoiding damage caused by local stress concentration. This pressure-dispersing design helps to extend the service life of the mounting base and the motor.

[0035] The arc-shaped groove fits better with the bottom of the motor and can provide more stable support in the vertical direction.

[0036] Specifically, in this embodiment, the positioning bar 5 is located between the two axial mounting seats 4 , and one side of the positioning bar 5 is arc-shaped and fits against the side wall of the motor.

[0037] The positioning bar 5 is a component for lateral positioning of the motor. Its arc-shaped design can better adapt to the contour of the motor side wall, ensuring that the motor is firmly supported in the horizontal direction, reducing the shaking space of the motor side wall, and effectively enhancing the lateral stability of the motor.

[0038] The arc-shaped positioning strips fit snugly against the motor sidewalls, further improving the motor's positioning accuracy within chamber 3. Through precise dimensional control and shape matching, the positioning strips ensure the motor reaches its intended position quickly and accurately during installation, reducing performance issues caused by assembly errors.

[0039] It should be noted that, in this embodiment, the fastening sheet 6 is a spring steel sheet or an elastic plastic sheet.

[0040] Both the spring steel sheet and the elastic plastic sheet have excellent elasticity and deformation capacity. This means that when subjected to external forces, they can deform to a certain extent and return to their original shape after the external force disappears. This property allows the fastening sheet 6 to fit tightly around the motor end, maintaining a stable fastening effect even if the motor undergoes slight deformation due to factors such as temperature fluctuations and vibration.

[0041] Spring steel sheets are known for their high strength and excellent durability, capable of withstanding the vibration and impact of motor operation, ensuring a long-lasting fastening effect. Elastic plastic sheets, on the other hand, offer excellent corrosion resistance and insulation properties, making them suitable for use in some specialized working environments.

[0042] According to specific application requirements and environmental conditions, a suitable material can be selected to ensure the durability and reliability of the fastening plate 6 .

[0043] The spring steel sheet and the elastic plastic sheet are both common engineering materials with mature processing and manufacturing processes, which helps to reduce the manufacturing cost of the fastening sheet 6 and improve production efficiency.

[0044] Preferably, Figure 4 and Figure 5 As shown, in this embodiment, the sealed groove 7 is V-shaped, and the two sealed grooves 7 are used to accommodate the two ends of the motor respectively.

[0045] The V-shaped sealing groove can closely fit the contour of the motor end to form an effective seal. Due to the natural convergence of the V-shaped structure, it can better adapt to the slight changes in the motor end, ensuring that it can maintain close contact even when the motor vibrates or the temperature changes.

[0046] When the fastening tabs 6 are combined with the upper housing 1 and pressed against the motor, the two side walls of the V-shaped closed groove exert a certain amount of squeezing force on the motor ends, thereby enhancing the vertical fixation of the motor. This additional tightening force helps reduce the motor's shaking and deviation during operation, improving the overall stability of the actuator.

[0047] The V-shaped closed groove design offers a degree of flexibility, adapting to motor ends of varying sizes. Due to the V-shaped structure's tolerance, even slightly different motor ends can be effectively accommodated and secured. This adaptability allows the fixing mechanism to be applied to a wider variety of motors, enhancing its versatility and flexibility.

[0048] The V-shaped sealed groove design simplifies the assembly process. Operators simply place the motor into chamber 3 of lower housing 2, ensuring both ends of the motor align with the V-shaped sealed groove. Then, they close and tighten the upper housing 1. Furthermore, when maintenance or replacement of the motor is required, the upper housing 1 can be easily opened and the motor removed from the V-shaped sealed groove, eliminating the need for complex disassembly.

[0049] In addition, although the main function of the closed groove is sealing and fixing, its V-shaped design allows air to flow at the opening of the V-shaped groove, which can promote heat dissipation at the motor end to a certain extent, reduce the motor operating temperature and improve operating efficiency.

[0050] like Figure 4 and Figure 5 As shown, two through holes 8 are formed opposite to each other on the fastening plate 6 .

[0051] By providing through-holes 8 in the fastening plate 6, some material can be removed, thereby reducing the weight of the entire fastening plate. This design is particularly important in areas such as new energy vehicles where lightweight design is required, as reducing weight helps reduce energy consumption and increase driving range. Furthermore, a reasonable through-hole layout can help balance the weight distribution of the fastening plate 6, avoiding excessive weight in certain areas, thereby further reducing deformation and stress concentration caused by uneven weight.

[0052] The presence of the through holes 8 can be considered as forming "hollowed-out" areas on the fastening plate 6. These areas can generate a certain amount of deformation space when subjected to external forces, thereby dispersing and relieving stress concentration. This helps to reduce deformation and damage of the fastening plate caused by excessive stress.

[0053] During the operation of the motor, thermal stress generated by temperature rise may adversely affect the fastening plate 6. The presence of the through hole 8 can provide a certain amount of thermal expansion space, thereby alleviating deformation and stress concentration caused by thermal stress.

[0054] In the description of this application, it should be noted that the terms "upper" and "lower" 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 this application 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 cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0055] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0056] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A motor fixing mechanism for a new energy vehicle actuator, characterized in that: include: An upper shell (1) and a lower shell (2), wherein the lower shell (2) has a chamber (3) for installing a motor, and axial mounting seats (4) are relatively arranged inside the chamber (3); the axial mounting seats (4) position the two ends of the bottom of the motor, and positioning strips (5) are relatively arranged inside the chamber (3), and two positioning strips (5) position the two sides of the motor; A fastening piece (6) is arranged opposite to the bottom of the upper shell (1); the fastening piece (6) is elastically deformable and has a sealed groove (7) for accommodating the end of the motor.

2. The motor fixing mechanism of a new energy vehicle actuator according to claim 1, characterized in that: The two axial mounting seats (4) are both provided with grooves adapted to the motor, and the grooves are in an arc shape.

3. The motor fixing mechanism of a new energy vehicle actuator according to claim 1, characterized in that: The positioning strip (5) is located between the two axial mounting seats (4), and one side of the positioning strip (5) is in an arc shape and fits against the side wall of the motor.

4. The motor fixing mechanism for a new energy vehicle actuator according to claim 1, characterized in that: The fastening sheet (6) is a spring steel sheet or an elastic plastic sheet.

5. The motor fixing mechanism for a new energy vehicle actuator according to claim 1, characterized in that: The sealed groove (7) is V-shaped, and the two sealed grooves (7) are used to accommodate the two ends of the motor respectively.

6. The motor fixing mechanism for a new energy vehicle actuator according to claim 1, characterized in that: The fastening plate (6) is provided with two through holes (8) opposite to each other.

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