Seam structure of motor casing
By using a design with alternating teardrop and trapezoidal protrusions at the joints of the motor housing, the problems of easy cracking and poor roundness of the housing were solved, resulting in improved strength and roundness, reduced costs, and increased production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 上海胜华波汽车电器有限公司
- Filing Date
- 2025-05-20
- Publication Date
- 2026-04-28
AI Technical Summary
The existing motor housing joint structure is prone to cracking and has poor roundness, which affects the motor's vibration and noise. In addition, the existing splicing method is costly and has low production efficiency.
The joint structure, which uses alternating teardrop-shaped and trapezoidal protrusions, combined with teardrop-shaped and trapezoidal grooves, allows the protrusions to embed into the grooves when the half-shells are joined, enhancing the connection strength and improving roundness.
It effectively eliminates the risk of casing cracking, improves casing strength and roundness, reduces vibration and noise, saves costs, reduces mold stamping steps, and improves production efficiency.
Smart Images
Figure CN224177991U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motor technology, and in particular to a joint structure for a motor housing. Background Technology
[0002] To reduce costs, the housing of existing electric motors is generally made by joining two halves of the housing together to form a circular housing. (See also...) Figure 1 The existing joint structure for splicing two halves of the casing into a circular casing generally uses dovetails 11 and dovetail grooves 12 to join the mating edges of the two halves of the casing 10. In actual use, this structure is prone to cracking, and the roundness of the casing is not good, which has a great impact on the vibration and noise of the motor. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a joint structure for a motor housing that can eliminate the risk of housing cracking and has good roundness, in order to address the above-mentioned technical problems existing in the joint structure of the motor housing.
[0004] The technical problem to be solved by this utility model can be achieved through the following technical solution:
[0005] A joint structure for an electric motor housing includes a housing composed of two half-housing units joined together. The two half-housing units are a first half-housing unit and a second half-housing unit. The structure is characterized by having a plurality of teardrop-shaped protrusions and a plurality of trapezoidal protrusions on the edges of the first half-housing unit where it meets the second half-housing unit, arranged alternately along the length of the first half-housing unit. Similarly, a plurality of teardrop-shaped grooves and a plurality of trapezoidal grooves are provided on the edges of the second half-housing unit where it meets the first half-housing unit, arranged alternately along the length of the second half-housing unit. When the first half-housing unit and the second half-housing unit are joined, each teardrop-shaped protrusion is embedded in a corresponding teardrop-shaped groove, and each trapezoidal protrusion is embedded in a corresponding trapezoidal groove.
[0006] In a preferred embodiment of this utility model, the height of the teardrop-shaped protrusion is greater than the height of the plurality of trapezoidal protrusions, and the depth of the teardrop-shaped groove is greater than the depth of the trapezoidal groove.
[0007] In a preferred embodiment of the present invention, the inclined side of each trapezoidal protrusion is smoothly connected to the teardrop-shaped protrusion, and the inclined side of each trapezoidal groove is smoothly connected to the teardrop-shaped groove.
[0008] By adopting the above technical solution, this utility model can eliminate the risk of easy cracking at the original housing seam, increase the housing strength and improve the roundness of the housing, improve motor vibration and noise, save costs, reduce mold stamping steps, and improve production efficiency. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the assembly of the existing casing.
[0010] Figure 2 This is a schematic diagram of the assembly of the casing of this utility model. Detailed Implementation
[0011] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0012] See Figure 2 The figure shows a joint structure for a motor housing, including a housing 100, which is composed of two half-housings spliced together. The two half-housings are a first half-housing 110 and a second half-housing 120.
[0013] Several teardrop-shaped protrusions 111 and several trapezoidal protrusions 112 are provided on the edges of the two sides where the first half-casing 110 and the second half-casing 120 meet. The teardrop-shaped protrusions 111 and the trapezoidal protrusions 112 are arranged alternately along the length direction of the first half-casing 110. The height of the teardrop-shaped protrusions 111 is greater than the height of the trapezoidal protrusions 112, and the hypotenuse of each trapezoidal protrusion 112 is smoothly connected to the teardrop-shaped protrusion 111.
[0014] Several teardrop-shaped grooves 121 and several trapezoidal grooves 122 are provided on the edges of the two sides where the second half of the housing 120 meets the first half of the housing 110; the teardrop-shaped grooves 121 and several trapezoidal grooves 122 are arranged alternately along the length of the second half of the housing 120; the depth of the teardrop-shaped groove 121 is greater than the depth of the trapezoidal groove 122, and the inclined side of each trapezoidal groove 122 is smoothly connected to the teardrop-shaped groove 121.
[0015] When the first half of the housing 110 and the second half of the housing 120 are joined, each teardrop-shaped protrusion 111 is embedded in the corresponding teardrop-shaped groove 121, and each trapezoidal protrusion 112 is embedded in the corresponding trapezoidal groove 122. This can eliminate the risk of cracking at the original housing joint, increase the housing strength and improve the roundness of the housing, improve motor vibration and noise, save costs, reduce mold stamping steps, and improve production efficiency.
Claims
1. A joint structure for an electric motor housing, comprising a housing, said housing being assembled from two half-housing units, the two half-housing units being divided into a first half-housing unit and a second half-housing unit, characterized in that, Several teardrop-shaped protrusions and several trapezoidal protrusions are provided on the edges of the two sides where the first half of the casing meets the second half of the casing. The teardrop-shaped protrusions and several trapezoidal protrusions are arranged alternately along the length direction of the first half of the casing. Several teardrop-shaped grooves and several trapezoidal grooves are provided on the edges of the two sides where the second half of the casing meets the first half of the casing. The teardrop-shaped grooves and several trapezoidal grooves are arranged alternately along the length direction of the second half of the casing. When the first half of the casing meets the second half of the casing, each teardrop-shaped protrusion is embedded in the corresponding teardrop-shaped groove, and each trapezoidal protrusion is embedded in the corresponding trapezoidal groove.
2. The joint structure of a motor housing according to claim 1, characterized in that, The height of the teardrop-shaped protrusion is greater than the height of the trapezoidal protrusions, and the depth of the teardrop-shaped groove is greater than the depth of the trapezoidal groove.
3. The joint structure of a motor housing according to claim 1, characterized in that, The inclined side of each trapezoidal protrusion smoothly transitions to the teardrop-shaped protrusion, and the inclined side of each trapezoidal groove smoothly transitions to the teardrop-shaped groove.