Sectionalized balance bar

Abstract

The utility model provides a section balance bar belongs to mechanical field, this section balance bar includes a pair of ball head assembly, is linked through connecting shaft between two ball head assembly, and connecting shaft includes split shaft no.

Description

Technical Field

[0001] This utility model belongs to the field of machinery and relates to the disassembly of balance bars. Background Technology

[0002] Automotive stabilizer bars are an indispensable component of vehicle suspension systems, primarily used to improve vehicle handling stability and reduce body roll. They are typically made of high-strength spring steel. During installation, they are generally fixed laterally to the chassis or subframe, with both ends connected to the left and right suspensions (such as shock absorbers or lower control arms) via linkages (small tie rods). When one suspension compresses, the stabilizer bar twists, transferring some of the force to the other suspension, forcing both sides to move in tandem and suppressing excessive compression or extension on one side. In practice, there are many types of automotive stabilizer bars for different car models, but often the only difference between different types is the angle formed by the ball joints at both ends; the structure of other areas is completely identical. This results in a large number of tooling and positioning molds, significantly increasing costs and greatly reducing production flexibility. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a sectional stabilizer bar. This sectional stabilizer bar allows for flexible adjustment of the ball joint angles at both ends, reducing production costs. It also solves the problems of the wide variety of existing stabilizer bar types and high production costs.

[0004] The objective of this utility model can be achieved through the following technical solution: a segmented balance bar, comprising a pair of ball joint assemblies connected by a connecting shaft, characterized in that the connecting shaft comprises a first sub-shaft and a second sub-shaft, the outer ends of the first sub-shaft and the second sub-shaft being connected to the corresponding ball joint assembly, the inner ends of the first sub-shaft and the second sub-shaft being welded and fixed, and the inner ends having a rotation positioning structure and a scale marking, the first sub-shaft and the second sub-shaft being able to undergo relative circumferential rotational movement before welding, and the scale marking corresponding to the angle formed by the two ball joint assemblies after the rotational movement.

[0005] In traditional designs, the connecting shaft is a single unit. In this solution, the connecting shaft is a segmented structure, divided into two sub-shafts, Shaft 1 and Shaft 2. These two sub-shafts can rotate circumferentially relative to each other using a rotary positioning structure. This rotary positioning structure positions the two sub-shafts, ensuring they contact each other and rotate without disengaging. It also provides positioning during rotation. After rotating the two ball joint assemblies to the desired angle, the angle is observed through scale markings before welding. In this solution, the angle between the two ball joint assemblies is confirmed via scale markings, significantly reducing the requirements for angle positioning and indirectly lowering production costs.

[0006] The aforementioned segmented balance bar, wherein the rotary positioning structure includes an annular positioning groove formed on the inner end of the first split shaft and an annular positioning part located on the inner end of the second split shaft. The bottom of the positioning groove has a positioning surface one with an annular wave-like distribution, and the positioning part has a positioning surface two with a shape that matches the positioning surface one.

[0007] In this scheme, the rotary positioning structure includes a positioning groove and a positioning part, specifically positioning surface one and positioning surface two. During operation, the positioning part of sub-shaft two is inserted into the positioning groove of sub-shaft one to achieve initial positioning between sub-shaft one and sub-shaft two. Then, sub-shaft one or sub-shaft two is rotated. With the cooperation of the wavy positioning surfaces one and two, positioning can be achieved at each certain angle of rotation. During positioning, positioning surfaces one and two are aligned. The wavy surface design is to provide a certain resistance to circumferential rotation during positioning. That is, when positioning surfaces one and two are aligned, there is a certain resistance to continued rotation, which facilitates the determination of the rotation angle. After rotary positioning, the connection between sub-shaft one and sub-shaft two can be welded.

[0008] The aforementioned segmented balance bar includes a pair of reference lines and a pair of graduation lines distributed along the outer wall of the first or second segment. One of the reference lines and the graduation line is located on the outer wall of the inner end of the first segment, and the other reference line and the graduation line are located on the outer wall of the inner end of the second segment. Initially, the two reference lines are aligned.

[0009] The graduation lines are circular with the two ends being the starting points of the graduations. The reference lines are located between the starting points of the graduations at both ends of the graduation lines. Initially, the two reference lines are aligned, which generally indicates that the two ball joint assemblies are parallel in the same direction. The specific setting can be determined by yourself. When rotating the first or second pivot, observe the corresponding reference lines and graduation lines to determine the rotation angle. The graduation lines have multiple intervals, which can be 5°, 10°, etc.

[0010] The aforementioned segmented balance bar has concave, annular welding areas on the inner ends of both the first and second split shafts.

[0011] Traditional welding operations simply involve welding at the joint between two objects. This type of welding often only covers the seam at the joint. In this solution, a concave welding area is set up, which transforms the seam into a wider area. When welding, this area is completely covered, which can greatly increase the connection strength.

[0012] The aforementioned segmented balance bar, wherein the rotary positioning structure includes an annular positioning part formed at the inner ends of the first and second sub-shafts, and the rotary positioning structure also includes a cylindrical positioning shaft located between the inner ends of the first and second sub-shafts. Both ends of the positioning shaft are provided with annular positioning grooves, the bottom of the positioning grooves having a positioning surface one with an annular wave-like distribution, and the positioning part having a positioning surface two with a shape that matches the positioning surface one.

[0013] In this scheme, a new positioning shaft is introduced into the rotary positioning structure. The positioning shaft connects sub-shaft one and sub-shaft two. Specifically, the positioning surface one in the positioning groove on the positioning shaft matches the corresponding positioning surface two on the positioning parts of sub-shaft one and sub-shaft two. The principle is the same as in scheme one and will not be elaborated further. The newly added positioning shaft in this scheme forms two weld joints and shifts the stress area in the middle of the connecting shaft, making the center of the connecting shaft a solid, seamless structure with stronger load-bearing capacity. In contrast, the weld joints in scheme one are prone to becoming stress points, and are easily broken under continuous concentrated stress.

[0014] The aforementioned segmented balance bar includes two pairs of reference lines and two pairs of graduation lines. One pair of reference lines and graduation lines is located at the inner end of the first dividing axis and one end of the positioning axis, while the other pair of reference lines and graduation lines is located at the inner end of the second dividing axis and the other end of the positioning axis. In the initial state, each pair of reference lines is aligned.

[0015] That is, the inner end of the first axis, the inner end of the second axis, and both ends of the positioning axis all have a baseline and a graduation line, making the scale recognition and observation after rotation more user-friendly and convenient, and enabling corresponding scale observation for either the first or second axis.

[0016] The aforementioned segmented balance bar has concave and annular welding areas at the inner end of the first split shaft and one end of the positioning shaft, and at the inner end of the second split shaft and the other end of the positioning shaft.

[0017] This design creates two welding zones: one between the first sub-axis and the positioning axis, and the other between the second sub-axis and the positioning axis. These two structures ensure a strong weld.

[0018] The aforementioned segmented balance bar, with both positioning surface one and positioning surface two including several peaks and troughs, allows adjacent peaks and troughs to cooperate with each other through rotational movement.

[0019] Angle transformation is achieved by matching and separating the crests and troughs during rotation.

[0020] The aforementioned segmented balance bar, with its reference line and index line falling on the welding area.

[0021] That is, the baseline and graduation lines disappear after welding, achieving concealed installation and protecting the technical know-how.

[0022] In the aforementioned segmented balance bar, the first and second sub-shafts are of equal length.

[0023] Make the force points balanced left and right.

[0024] Compared with existing technologies, this segmented balance bar has the following advantages:

[0025] 1. This segmented balance bar achieves a segmented welding structure through a rotary positioning structure and scale markings, enabling multiple different angle specifications for the same product and significantly reducing the cost of positioning molds.

[0026] 2. In the second scheme of this segmented balance bar, a new positioning shaft is set, forming two welding points, which transfers the stress area in the middle of the connecting shaft, making the center position of the connecting shaft a solid seamless structure with stronger stress resistance.

[0027] 3. This segmented balance bar forms a welding zone with a certain width, transforming the traditional joint into a wider area. When welding, this area is completely covered, which can greatly increase the connection strength. Attached Figure Description

[0028] Figure 1 This is a structural cross-sectional view of Embodiment 1.

[0029] Figure 2 This is a cross-sectional view of the structure when the first and second sub-axis are separated in Example 1.

[0030] Figure 3 This is a schematic diagram of the structure of Embodiment 1.

[0031] Figure 4 This is a structural cross-sectional view of Embodiment 2.

[0032] Figure 5 This is a schematic diagram of the second positioning surface of the split balance bar.

[0033] Figure 6 yes Figure 1 Enlarged view of the structure of region A in the middle.

[0034] Figure 7 yes Figure 2 Enlarged view of the structure of region B in the middle.

[0035] Figure 8 yes Figure 3 Enlarged view of the structure of region C in the middle.

[0036] Figure 9 yes Figure 4 Enlarged view of the structure of region D in the middle.

[0037] List of reference numerals

[0038] In the picture:

[0039] 1. Ball joint assembly;

[0040] 2. Connecting shaft;

[0041] 2a. Split axis one;

[0042] 2a1, Positioning groove;

[0043] 2a1a, Positioning Surface One;

[0044] 2b. Split axis two;

[0045] 2b1, Positioning section;

[0046] 2b1a, Positioning Surface Two;

[0047] 2a2b, Welding area;

[0048] 3. Scale markings;

[0049] 3a. Baseline;

[0050] 3b. Gradient lines;

[0051] 4. Positioning axis; Detailed Implementation

[0052] Example 1

[0053] like Figures 1 to 3 , Figures 5 to 8 As shown, this segmented balance bar includes a pair of ball joint assemblies 1, which are connected by a connecting shaft 2. The connecting shaft 2 includes a first sub-shaft 2a and a second sub-shaft 2b. The outer ends of the first sub-shaft 2a and the second sub-shaft 2b are connected to the corresponding ball joint assemblies 1. The inner ends of the first sub-shaft 2a and the second sub-shaft 2b are welded and fixed, and the inner ends have a rotation positioning structure and a scale mark 3. Before welding, the first sub-shaft 2a and the second sub-shaft 2b can rotate relative to each other in the circumferential direction. The scale mark 3 corresponds to the angle formed by the two ball joint assemblies 1 after the rotation. In traditional structures, the connecting shaft 2 is a single unit. In this design, however, the connecting shaft 2 is a segmented structure, consisting of two sub-shafts: 2a and 2b. These sub-shafts 2a and 2b utilize a rotary positioning structure to achieve mutual circumferential rotation. This structure positions the sub-shafts 2a and 2b, ensuring they remain in contact and rotate without disengaging. It also provides positioning during rotation. After rotating the two ball joint assemblies 1 to the desired angle, the angle is observed using the scale markings 3 before welding. In this design, the angle between the two ball joint assemblies 1 is confirmed via the scale markings 3, significantly reducing the requirements for angle positioning and indirectly lowering production costs.

[0054] The rotary positioning structure includes a positioning groove 2a1 in the shape of an annular opening on the inner end of the first sub-axis 2a and a positioning part 2b1 in the shape of an annular opening on the inner end of the second sub-axis 2b. The bottom of the positioning groove 2a1 has a positioning surface 2a1a in the shape of an annular wave, and the positioning part 2b1 has a positioning surface 2b1a in the shape of a second positioning surface that matches the positioning surface 2a1a. In this scheme, the rotary positioning structure includes a positioning groove 2a1 and a positioning part 2b1. Specifically, it includes a positioning surface 2a1a and a positioning surface 2b1a. During operation, the positioning part 2b1 of the second shaft 2b is inserted into the positioning groove 2a1 of the first shaft 2a to achieve initial positioning between the second shaft 2a and the second shaft 2b. Then, the first shaft 2a or the second shaft 2b is rotated. With the cooperation of the wavy positioning surface 2a1a and the second positioning surface 2b1a, positioning can be achieved at each certain angle of rotation. During positioning, the positioning surface 2a1a and the second positioning surface 2b1a are in contact. The wavy surface design provides a certain resistance to circumferential rotation during positioning. That is, when the positioning surface 2a1a and the second positioning surface 2b1a are in contact, there is a certain resistance to continued rotation, which facilitates the determination of the rotation angle. After rotary positioning, the connection between the second shaft 2a and the second shaft 2b is welded. The scale markings 3 include a pair of reference lines 3a and a pair of graduation lines 3b distributed along the outer wall of either the first or second sub-axis 2a or the second sub-axis 2b. One reference line 3a and graduation line 3b are located on the outer wall of the inner end of the first sub-axis 2a, and the other reference line 3a and graduation line 3b are located on the outer wall of the inner end of the second sub-axis 2b. Initially, the two reference lines 3a are aligned. The graduation line 3b has a ring structure with the two ends being the starting points of the scale. The reference line 3a is located between the starting points of the scale at both ends of the graduation line 3b. Initially, the two reference lines 3a are aligned, which generally means that the two ball joint assemblies 1 are parallel in the same direction. The specific setting can be determined by observing the corresponding reference line 3a and graduation line 3b when rotating the first or second sub-axis 2a or the second sub-axis 2b.

[0055] Both the inner ends of shaft 1 (2a) and shaft 2 (2b) have concave, annular welding areas (2a2b). Traditional welding only involves welding at the joint, often only covering the seam. This design uses concave welding areas (2a2b) to transform the seam into a wider area, completely covering it during welding and significantly increasing connection strength. Positioning surfaces 1 (2a1a) and 2 (2b1a) each include several peaks and troughs, which can interact through rotation. Angle changes are achieved by matching and separating the peaks and troughs during rotation. The baseline (3a) and graduation line (3b) fall on the welding area (2a2b). After welding, the baseline (3a) and graduation line (3b) disappear, achieving concealed installation and protecting technical know-how. Shaft 1 (2a) and shaft 2 (2b) are of equal length, ensuring left-right balance at the stress points.

[0056] Example 2

[0057] like Figure 4 and Figure 9 As shown, the difference between this embodiment and Embodiment 1 is that the rotary positioning structure includes an annular positioning portion 2b1 formed at the inner ends of the first and second sub-axis 2a and the second sub-axis 2b, respectively. The rotary positioning structure also includes a cylindrical positioning shaft 4 located between the inner ends of the first and second sub-axis 2a and the second sub-axis 2b. Both ends of the positioning shaft 4 have annular positioning grooves 2a1. The bottom of the positioning grooves 2a1 has a positioning surface 2a1a with an annular wave-like distribution. The positioning portion 2b1 has a positioning surface 2b1a whose shape matches the positioning surface 2a1a. In this scheme, the rotary positioning structure introduces a new positioning shaft 4, which connects the first and second sub-axis 2a and the second sub-axis 2b. Specifically, the positioning surface 2a1a in the positioning groove 2a1 on the positioning shaft 4 matches the positioning surface 2b1a on the corresponding positioning portion 2b1 on the first and second sub-axis 2a and the second sub-axis 2b. The principle is the same as in Embodiment 1 and will not be elaborated further. In this scheme, the newly set positioning shaft 4 serves to form two welded joints and transfer the stress area in the middle of the connecting shaft 2, making the center of the connecting shaft 2 a solid, seamless structure with stronger stress resistance. In contrast, the welded joints in Scheme 1 are prone to becoming stress points, and are easily broken under continuous concentrated stress.

[0058] The scale markings 3 include two pairs of reference lines 3a and two pairs of graduation lines 3b. One pair of reference lines 3a and graduation lines 3b is located at the inner end of the first axis 2a and one end of the positioning axis 4, while the other pair is located at the inner end of the second axis 2b and the other end of the positioning axis 4. Initially, each pair of reference lines 3a is aligned. That is, the inner end of the first axis 2a, the inner end of the second axis 2b, and both ends of the positioning axis 4 each have a reference line 3a and a graduation line 3b, making scale identification and observation after rotation more user-friendly and convenient, and enabling corresponding scale observation when operating either the first axis 2a or the second axis 2b. The inner end of the first axis 2a and the end of the positioning axis 4, and the inner end of the second axis 2b and the other end of the positioning axis 4 each have concave and annular welding areas 2a and 2b. In this scheme, two welding zones 2a and 2b are formed, one located between the first sub-axis 2a and the positioning axis 4, and the other located between the second sub-axis 2b and the positioning axis 4. The two structures make the welding firm.

[0059] Details of the structure, specific component dimensions and principles not mentioned in this application are all common knowledge or can be derived by those skilled in the art through simple selection, and will not be elaborated upon.

[0060] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A detachable stabilizer bar, comprising a pair of ball joint assemblies connected by a connecting shaft, characterized in that, The connecting shaft includes a first branch shaft and a second branch shaft. The outer ends of the first branch shaft and the second branch shaft are connected to the corresponding ball joint assembly. The inner ends of the first branch shaft and the second branch shaft are welded and fixed, and the inner ends have a rotation positioning structure and a scale mark. Before welding, the first branch shaft and the second branch shaft can rotate relative to each other in a circumferential direction. The scale mark corresponds to the angle formed by the two ball joint assemblies after the rotation.

2. The segmented balance bar according to claim 1, characterized in that, The rotary positioning structure includes a positioning groove in the shape of an annular opening on the inner end of the first sub-shaft and a positioning part in the shape of an annular opening on the inner end of the second sub-shaft. The bottom of the positioning groove has a positioning surface one with an annular wave-like distribution, and the positioning part has a positioning surface two with a shape that matches the positioning surface one.

3. The segmented balance bar according to claim 2, characterized in that, The scale markings include a pair of reference lines and a pair of graduation lines distributed along the outer wall of the first or second sub-axis. One of the reference lines and the graduation line is located on the outer wall of the inner end of the first sub-axis, and the other reference line and the graduation line are located on the outer wall of the inner end of the second sub-axis. Initially, the two reference lines are aligned.

4. The segmented balance bar according to claim 3, characterized in that, Both the inner ends of the first and second sub-shafts have concave, annular welding areas.

5. The segmented balance bar according to claim 1, characterized in that, The rotary positioning structure includes an annular positioning part formed at the inner ends of the first and second sub-shafts. The rotary positioning structure also includes a cylindrical positioning shaft located between the inner ends of the first and second sub-shafts. Both ends of the positioning shaft are provided with annular positioning grooves. The bottom of the positioning groove has a positioning surface one with an annular wave pattern. The positioning part has a positioning surface two with a shape that matches the positioning surface one.

6. The segmented balance bar according to claim 5, characterized in that, The scale markings include two pairs of reference lines and two pairs of graduation lines. One pair of reference lines and graduation lines is located at the inner end of the first axis and one end of the positioning axis, and the other pair of reference lines and graduation lines is located at the inner end of the second axis and the other end of the positioning axis. In the initial state, each pair of reference lines is aligned.

7. The segmented balance bar according to claim 6, characterized in that, The inner end of the first split shaft and one end of the positioning shaft, and the inner end of the second split shaft and the other end of the positioning shaft, all have concave and annular welding areas.

8. The segmented balance bar according to claim 2 or 5, characterized in that, Both positioning surface one and positioning surface two include several peaks and troughs, and adjacent peaks and troughs can cooperate with each other through rotational movement.

9. The segmented balance bar according to claim 4 or 7, characterized in that, The baseline and graduation line fall on the welding area.

10. The segmented balance bar according to claim 1, 2, 3, 4, 5, 6, or 7, characterized in that, The first and second sub-axis have equal lengths.

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