Clamping structure for improving assembling and fixing stability of EPS controller

Abstract

The utility model discloses a clamping structure for improving the assembling and fixing stability of an EPS controller, relates to the field of EPS controllers, solves the problem that the existing traditional clamping stability is limited, and adopts the following scheme that the clamping structure comprises an upper cover and a base which are assembled on the two sides of the top and bottom of the EPS controller and used for assembling the EPS controller; a main body of the upper cover is a rectangular top cover, and four groups of opposite clamping feet are fixedly mounted at the bottom of the rectangular top cover; the base comprises a base plate and four sets of clamping grooves formed in the top of the base plate, the positions of the four sets of clamping grooves are opposite to the clamping feet, each clamping groove is an inclined face with a certain inclination angle, and the included angle between each inclined face and the outer end face ranges from 0 degree to 90 degrees; according to the clamping structure for improving the assembling and fixing stability of the EPS controller, by arranging the shape structures, the lengths and the angles of the matching surfaces of the clamping feet and the clamping grooves, zero-clearance riveting between the upper cover and the base is achieved through riveting deformation of the clamping feet and the clamping grooves, and the loosening force capable of being borne by the clamping feet is synchronously increased to the maximum extent.

Description

Technical Field

[0001] The utility model relates to the technical field of EPS controllers, in particular to a clamping structure for improving the assembly and fixing stability of EPS controllers. Background Art

[0002] The EPS controller is the core component of the electric power steering system. The EPS controller is responsible for processing the torque, angle and vehicle speed signals from the steering column. Through advanced software algorithms, it accurately controls the torque and direction signals output by the power motor, thereby achieving efficient power steering control.

[0003] After searching, the application with patent number 202321999229.1 discloses an EPS controller, including: an upper cover, a lower cover, a connecting sleeve, a motor and a PCB board, the lower end of the upper cover is provided with a first storage groove and the upper end of the lower cover is provided with a second storage groove, the lower end of the upper cover is butted with the upper end of the lower cover, the first storage groove and the second storage groove are connected to form a PCB board placement space, the PCB board is arranged in the PCB board placement space, the motor is arranged in the upper cover, the lower end of the upper cover protrudes outward to form an upper extension part, the upper end of the lower cover also protrudes outward to form a lower extension part, the upper extension part corresponds to the lower extension part, and the connecting sleeve detachably wraps the upper extension part and the lower extension part;

[0004] The sealing sleeve-type assembly method in the above application document has a very poor heat dissipation effect. The existing method generally adopts the base and the upper cover to realize the assembly of the EPS controller therebetween. However, the stability of the EPS controller assembly and fixation needs to be improved. Under working conditions such as severe shaking of the vehicle, the clamping feet may occasionally rebound or even loosen, resulting in a potential risk of displacement or even falling off of the upper cover. At the same time, the design of the related clamping structures commonly used for assembly and fixation on the market is relatively complex, resulting in a complex production and manufacturing process, difficulty in realizing the production process, complex assembly riveting tooling, high overall cost and low practicality.

[0005] Therefore, we propose a clamping structure to improve the assembly and fixation stability of the EPS controller. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a clamping structure for improving the assembly and fixing stability of an EPS controller, thereby solving the problem of limited stability of the prior traditional clamping structure.

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a clamping structure for improving the assembly and fixing stability of the EPS controller, including an upper cover and a base mounted on both sides of the top and bottom of the EPS controller to assemble it;

[0008] The main body of the upper cover is a rectangular top cover, and four sets of oppositely positioned clamping feet are fixedly installed on the bottom of the rectangular top cover;

[0009] The base includes a base plate and four groups of slots opened on the top thereof, the positions of the four groups of slots are opposite to the card feet, the slots are inclined surfaces with a certain inclination angle, the angle between the inclined surface and the outer end surface is between 0° and 90°, and the card feet and the slots between the upper cover and the base are assembled with zero gap by riveting.

[0010] Preferably, the clamping foot is an extended rectangular plate with a circular head;

[0011] Among them, the setting of the shape of the clamping foot has a simple structure and good stamping formability, and is also conducive to the design of riveting tooling and reduces the difficulty of tooling manufacturing.

[0012] Preferably, the length of the clamping foot is 13 mm ± 0.1 mm, and the width is 7 mm ± 0.1 mm;

[0013] Preferably, the inclined angle of the slot mating surface is 77°±0.5°;

[0014] Among them, the clamping effect is excellent, the riveting process is easy to realize, the riveting tooling is simple, and the overall size is compact.

[0015] Preferably, the clamping groove is a groove body with a circular front end that matches the shape of the clamping foot.

[0016] The utility model provides a clamping structure for improving the assembly and fixing stability of an EPS controller, and has the following beneficial effects:

[0017] 1. The clamping structure for improving the assembly and fixing stability of the EPS controller realizes zero-gap riveting between the upper cover and the base by setting the shape structure of the clamping foot and the clamping slot, as well as their length and the angle of the mating surface, and utilizes the riveting deformation of the clamping foot and the clamping slot, and simultaneously maximizes the loosening force that the clamping foot can withstand, thereby effectively improving the reliability of the EPS controller installation, thereby improving the quality reliability of the EPS controller, and solving the problem of limited stability of the existing traditional clamping;

[0018] 2. The clamping structure that improves the assembly and fixation stability of the EPS controller improves the assembly and fixation stability of the EPS controller by redesigning the clamping feet and structure and determining a reasonable size range, thereby improving the reliability of the EPS controller, making this product more competitive than similar competing products on the market, and helping to increase the market share in the automotive market. At the same time, it can also reduce the cost increase caused by after-sales maintenance, and increase the company's revenue benefits by approximately RMB 500,000 per year. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the top side of the base of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the upper cover of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the base card slot of the utility model.

[0023] In the figure: 1, upper cover; 11, clamping foot; 2, base; 21, clamping slot. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-4 The embodiment of the utility model provides a technical solution: a clamping structure for improving the assembly and fixing stability of an EPS controller, comprising an upper cover 1 and a base 2 assembled on both sides of the top and bottom of the EPS controller to assemble it; the main body of the upper cover 1 is a rectangular top cover, and four groups of clamping feet 11 with opposite positions are fixedly installed on the bottom of the rectangular top cover; the base 2 includes a base plate and four groups of clamping grooves 21 opened on the top of the base plate, the positions of the four groups of clamping grooves 21 are opposite to the clamping feet 11, the clamping grooves 21 are inclined surfaces with a certain inclination angle, and the angle between the inclined surface and the outer end surface is between 0° and 90°, and the clamping feet 11 and the clamping grooves 21 between the upper cover 1 and the base 2 are assembled with zero clearance by riveting;

[0026] Among them, the clamping structure for improving the assembly and fixing stability of the EPS controller realizes zero-gap riveting between the upper cover 1 and the base 2 by setting the shape structure of the clamping foot 11 and the clamping slot 21 as well as their length and mating surface angle, and utilizes the riveting deformation of the clamping foot 11 and the clamping slot 21, and simultaneously maximizes the loosening force that the clamping foot 11 can withstand, thereby effectively improving the reliability of the installation of the EPS controller, thereby improving the quality reliability of the EPS controller and solving the problem of limited stability of existing traditional clamping.

[0027] Embodiment 2:

[0028] The clamping foot 11 is an extended rectangular plate with a round head. The shape of the clamping foot 11 is simple in structure and good in stamping formability. It is also conducive to the design of riveting tooling and reduces the difficulty of tooling manufacturing.

[0029] The length of the clamping foot 11 is 13mm±0.1mm, and the width is 7mm±0.1mm; the inclination angle of the matching surface of the clamping slot 21 is 77°±0.5°; the clamping effect is excellent, the riveting process is easy to implement, the riveting tooling is simple, and the overall size is compact.

[0030] The clamping groove 21 is a groove body with a circular front end that matches the shape of the clamping foot 11 .

[0031] The clamping structure for improving the assembly and fixing stability of the EPS controller improves the assembly and fixing stability of the EPS controller by redesigning the structure of the clamping feet 11 and 12 and determining a reasonable size range, thereby improving the reliability of the EPS controller, making this product more competitive than similar competing products on the market, and helping to increase the market share in the automobile market. At the same time, it can also reduce the cost increase caused by after-sales maintenance, and increase the company's revenue benefits by approximately RMB 500,000 per year.

[0032] It should be noted that the design of the EPS controller card connection structure needs to follow several principles: first, it needs to meet the basic function of a firm card connection, and secondly, under this premise, the feasibility of production and processing (such as the feasibility and difficulty of the riveting process of the card foot 11) and the stability of quality control (such as the rebound of the card foot 11 after riveting causes a gap with the matching surface of the card slot 21, causing the upper cover 11 shell to loosen), and it is also necessary to consider minimizing the cost of manufacturing materials (for example, if a relatively small size of material can meet the functional target requirements, a larger size should not be designed to cause waste). Therefore, the design definition of the size range of the card connection structure needs to be verified, analyzed and summarized many times before the specific value range of the size that meets the requirements of these three principles can be found (such as the length and width of the card foot 11, the slope of the fitting surface of the card slot 21). If the length or width of the card foot 11 is too large and occupies a large space, it is easy to cause the overall size of the product to be too large and the material cost is high. On the contrary, if the size is too small, the mechanical strength of the card foot 11 is insufficient, and the card foot 11 is easy to rebound after riveting, causing loosening and displacement. If the angle of inclination of the matching surface of the card slot 21 is smaller, the greater the pull-out force that the card foot 11 can withstand after riveting, which means that the better the card connection is, the stronger the stability is. However, the angle cannot be less than 0° (i.e., undercut) because the process of riveting is complicated and difficult to achieve with conventional tooling design. Even if the riveting tooling is to be achieved, the design and manufacture of the riveting tooling is very complicated, and the cost of the riveting tooling is high. On the contrary, the larger the angle, the easier it is for the card foot to loosen. When the angle exceeds 90°, the riveting effect is completely ineffective. From the above analysis, it can be seen that the definition of the three dimensions of the length and width of the card foot 11 and the inclination angle of the matching surface of the card slot 21 on the base 2 determines the stability, reliability and economy of the function of the card connection structure. After four times of repeated verification of the clamping effects of the three different sizes, the following conclusions were drawn through analysis and summary: when the length of the four clamping feet 11 is 13mm±0.1mm, the width is 7mm±0.1mm, and the inclination angle of the matching surface of the clamping slot 21 is 77°±0.5°, the clamping effect is excellent, the riveting process is easy to implement, the riveting tooling is simple, and the overall size is compact.

[0033] The working principle and use process of the utility model are as follows: when the device is required to work, the upper cover 1 and the base 2 are mounted on both sides of the top and bottom of the EPS control, and four groups of clamping feet 11 are riveted into the clamping slot 21 with zero clearance. The length of the clamping foot 11 is 13mm±0.1mm, the width is 7mm±0.1mm, and the inclination angle of the matching surface of the clamping slot 21 is 77°±0.5°, which ensures the overall zero-clearance riveting effect and maximizes the pull-off force it can withstand, solving the problem of poor clamping effect of the existing device.

[0034] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A clamping structure for improving the assembly and fixing stability of an EPS controller, comprising an upper cover (1) and a base (2) mounted on both sides of the top and bottom of the EPS controller for assembly; Features: The main body of the upper cover (1) is a rectangular top cover, and four groups of clamping feet (11) in opposite positions are fixedly installed on the bottom of the rectangular top cover; The base (2) comprises a base plate and four groups of slots (21) formed on the top thereof. The positions of the four groups of slots (21) are opposite to the foot (11). The slots (21) are inclined surfaces with a certain inclination angle. The angle between the inclined surface and the outer end surface is between 0° and 90°. The foot (11) and the slots (21) are assembled with zero clearance between the upper cover (1) and the base (2) by riveting.

2. A clamping structure for improving the assembly and fixing stability of an EPS controller according to claim 1, characterized in that: The clamping foot (11) is an extended rectangular plate with a circular head.

3. The clamping structure for improving the assembly and fixing stability of the EPS controller according to claim 1, characterized in that: The length of the clamping foot (11) is 13 mm ± 0.1 mm, and the width is 7 mm ± 0.1 mm.

4. A clamping structure for improving the assembly and fixing stability of an EPS controller according to claim 3, characterized in that: The matching surface inclination angle of the clamping groove (21) is 77°±0.5°.

5. The clamping structure for improving the assembly and fixing stability of the EPS controller according to claim 1, characterized in that: The clamping groove (21) is a groove body with a circular front end that matches the shape of the clamping foot (11).

Images