A side wall b-pillar upper cross beam
By installing welding plates, connecting holes, overlapping slopes, and positioning buckles on the upper crossbeam of the side B-pillar, the problem of increased parts and production costs caused by sunroof and non-sunroof configurations in the existing technology is solved, achieving stable connection and cost reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YIBIN COWIN AUTO CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-08-04
AI Technical Summary
In the existing technology, the upper area of the side B-pillar requires the development of two structures to match the sunroof and non-sunroof configurations, which leads to an increase in the number of parts, higher development and production management costs, and difficulty in meeting performance requirements in terms of structural strength.
Design a side B-pillar upper crossbeam, including a welding plate, connecting holes, overlapping slope, overlapping boss and positioning buckle, to achieve a stable connection with the sunroof and non-sunroof. The connection stability and convenience are improved by setting the overlapping slope of the welding plate and the top cover and the positioning buckle.
It reduced the manufacturing cost of the upper crossbeam of the side B-pillar, improved practicality, ensured a stable connection with the roof, and simplified the production process.
Smart Images

Figure CN224589238U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive frame technology, and in particular to a side B-pillar upper crossbeam. Background Technology
[0002] The same vehicle model can be configured with or without a sunroof. For the sunroof version, the body frame is welded together with the roof assembly (including the sunroof mounting plate) and the side panel assembly. For the non-sunroof version, the body frame is welded together with the central roof beam and the side panel assembly, and then the outer roof panel is welded on. Therefore, the upper area of the B-pillar on the side panel typically has two different structures to accommodate the sunroof mounting plate of the sunroof version and the central roof beam of the non-sunroof version.
[0003] Developing two types of parts for the upper part of the B-pillar increases the number of parts and the number of side assembly states, which will increase development costs, production management costs, and error prevention costs. Creating two types of parts at the overlap between the roof outer panel and the side panel to ensure uniformity of the side panel states prevents the roof outer panel of the sunroof and non-sunroof from being produced using a common mold, increasing development costs. Adding a transition bracket to the upper part of the B-pillar to connect the roof assembly or the central roof beam increases the number of side assembly states, further increasing development costs, and making it difficult to meet structural strength performance requirements.
[0004] For example, CN114275051A, published on April 5, 2022, discloses an integral B-pillar inner panel and central crossbeam support plate structure, including a side outer panel, a B-pillar reinforcing member, an upper reinforcing member of the side outer panel, an upper beam of the B-pillar inner panel, the B-pillar inner panel, a central crossbeam of the top cover, and an outer panel of the central crossbeam of the top cover. The upper beam of the B-pillar inner panel is located inside the B-pillar inner panel, and the lower part of the upper beam of the B-pillar inner panel is welded to the upper part of the B-pillar inner panel. The upper part of the upper reinforcing member of the side outer panel... The upper part of the inner panel of column B is welded to the upper beam. The reinforcement of column B is located inside the upper reinforcement of the outer panel of the side wall. The upper part of the reinforcement of column B is welded to the middle part of the upper reinforcement of the outer panel of the side wall. The outer panel of the side wall is located outside the reinforcement of column B. The two side edges of the outer panel of the side wall are welded to the two side edges of the reinforcement of column B. The upper part of the outer panel of the side wall is welded to the upper part of the upper reinforcement of the outer panel of the side wall. The outer panel of the middle crossbeam of the top cover is welded to the upper part of the outer panel of the side wall. The middle crossbeam of the top cover is welded to the upper end of the inner panel of column B. The middle crossbeam of the top cover disclosed above can only be welded to the upper end of the inner panel of column B, and cannot be connected to different types of top covers, resulting in poor practicality. Summary of the Invention
[0005] The purpose of this invention is to provide a more practical upper crossbeam for the side B-pillar. This invention achieves a stable connection between the upper crossbeam of the side B-pillar and the sunroof or other windows via a welding plate and connecting holes mounted on the beam, thereby reducing the manufacturing cost of the upper crossbeam and increasing its practicality.
[0006] To achieve the above objectives, the technical solution adopted by this utility model to solve its technical problem is: a side B-pillar upper crossbeam, including a beam body, a welding plate provided on the beam body, and a connection hole for bolts to pass through on the welding plate.
[0007] The welding plate has an overlapping bevel.
[0008] The overlapping inclined surface is provided with an overlapping boss.
[0009] The overlapping protrusion is equipped with a positioning buckle.
[0010] The overlapping inclined surface is provided with positioning holes, which are located on both sides of the overlapping boss.
[0011] The welding plate is arranged perpendicular to the beam, the overlapping boss is arranged parallel to the welding plate, and the connection between the welding plate and the beam is transitioned by an arc.
[0012] The connection between the lap slope and the beam is provided with a through hole.
[0013] The beneficial effects of this utility model are:
[0014] By setting up welding plates, a stable connection is achieved between the side B-pillar and the sunroof and non-sunroof, thereby reducing the manufacturing cost of the upper crossbeam of the side B-pillar and making it more practical.
[0015] The welding plate has a recessed overlapping slope, and the overlapping slope has an overlapping platform that abuts against the top cover, thus ensuring a stable connection between the top cover and the upper crossbeam of the side B-pillar. The positioning buckle set at the end of the overlapping platform is pre-connected to the top cover, which facilitates subsequent welding or bolting of the welding plate to the top cover, thereby realizing a convenient connection between the upper crossbeam of the side B-pillar and the top cover, and making it more practical. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of the upper crossbeam of the side B-pillar of this utility model.
[0017] Figure 2 for Figure 1 A structural diagram showing the connection between the upper crossbeam of the side B-pillar and the roof of the non-sunroof version.
[0018] Figure 3 for Figure 1 A structural diagram showing the connection between the upper crossbeam of the side B-pillar and the roof of the sunroof panel.
[0019] In the attached diagram: 1-beam body, 2-welded plate, 3-connecting hole, 4-lapping slope, 5-lapping boss, 6-positioning buckle, 7-through hole, 8-positioning hole. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0021] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.
[0022] like Figure 1 As shown, the upper crossbeam of the side B-pillar includes a beam body 1, a welding plate 2 on the beam body 1, and connecting holes 3 for bolts to pass through. The welding plate 2 is used to connect with the top cover of the non-sunroof version. The connecting holes 3 are designed to allow the welding plate 2 to connect with the top cover of the sunroof version. (Refer to...) Figure 1 There are two connecting holes 3, which are symmetrically arranged on both sides of the welding plate 2. In this embodiment, the connecting holes 3 are used for the hexagonal head bolt and flat washer assembly to connect with the top cover of the sunroof panel. In this embodiment, the beam 1 and the welding plate 2 are arranged perpendicular to each other, as shown in the figure. Figure 1 The beam 1 is set vertically, and the welding plate 2 is set horizontally. The beam 1 is also provided with through holes for bolts to pass through, so as to realize the installation of the beam 1 on the frame.
[0023] When beam 1 is connected to the non-skylight roof, the non-skylight roof is welded to the welding plate 2 of beam 1, thereby connecting the side B-pillar to the non-skylight roof. When beam 1 is connected to the skylight roof, the skylight roof contacts the welding plate 2. Bolts pass through the connection holes 3 on the roof and welding plate 2 to connect the upper crossbeam of the side B-pillar to the roof. The welding plate 2 enables a stable connection between the side B-pillar and the skylight and non-skylight, thereby reducing the manufacturing cost of the upper crossbeam of the side B-pillar and improving its practicality.
[0024] The welding plate 2 is provided with an overlapping slope 4. The overlapping slope 4 is provided so that the middle crossbeam of the top cover falls on the overlapping slope 4 and is welded to the upper surface of the welding plate 2, thereby increasing the stable connection between the upper crossbeam of the side B-pillar and the top cover. Specifically, the overlapping slope 4 is lowered on the welding plate 2, and there are openings on both sides of the overlapping slope 4, so that the middle crossbeam of the top cover falls on the welding plate 2 through the openings for welding.
[0025] The overlapping ramp 4 is provided with an overlapping boss 5. The overlapping boss 5 is provided to ensure stable welding after the top cover is in contact. Specifically, the protrusion of the overlapping boss 5 is such that there are grooves on both sides of the overlapping boss 5. The grooves are provided to avoid the protruding part on the top beam of the top cover, thereby ensuring a stable connection between the upper beam of the side B-pillar and the top cover.
[0026] The overlapping boss 5 is provided with a positioning buckle 6. The positioning buckle 6 is set to facilitate the pre-connection of the top cover and the overlapping platform 5, thereby facilitating subsequent welding or bolt connection, thus realizing the convenient connection between the upper crossbeam of the side B-pillar and the top cover. In this embodiment, the positioning buckle 6 is set at the end of the overlapping boss 5. The positioning buckle 6 is tilted upward, thereby facilitating the connection with the top cover.
[0027] The overlapping inclined surface 4 is provided with positioning holes 8, which are located on both sides of the overlapping boss 5. The positioning holes 8 are designed to facilitate cooperation with the positioning pins of the side wall, thereby achieving a precise connection between the upper crossbeam of the side wall B-pillar and the components of the side wall.
[0028] The welding plate 2 is set perpendicular to the beam 1, and the overlapping boss 5 is set parallel to the welding plate 2, so that the end of the top cover can be placed on the welding plate 2 for connection. The connection between the welding plate 2 and the beam 1 is transitioned by an arc to prevent stress and thus increase the strength of the connection between the welding plate 2 and the beam 1.
[0029] A through hole 7 is provided at the connection between the lap slope 4 and the beam 1. The through hole 7 facilitates the bending of the welding plate 2, thereby enabling the welding plate 2 to be easily formed on the beam 1.
[0030] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A transverse beam on the upper part of a side B-pillar, comprising a beam body (1), characterized in that, The beam (1) is provided with a welding plate (2), and the welding plate (2) is provided with a connecting hole (3) for bolts to pass through; the welding plate (2) is provided with an overlapping slope (4); the overlapping slope (4) is provided with an overlapping boss (5); the overlapping boss (5) is provided with a positioning buckle (6); the overlapping slope (4) is provided with a positioning hole (8), and the positioning hole (8) is located on both sides of the overlapping boss (5).
2. The upper crossbeam of the side B-pillar according to claim 1, characterized in that, The welding plate (2) is set perpendicular to the beam (1), the overlapping boss (5) is set parallel to the welding plate (2), and the connection between the welding plate (2) and the beam (1) is transitioned by an arc.
3. The upper crossbeam of the side B-pillar according to claim 2, characterized in that, A through hole (7) is provided at the connection between the overlapping inclined surface (4) and the beam (1).