BDU damping installation structure
By inserting the support sleeve and limit retaining ring in the through hole of the shock absorber pad, the axial deformation of the shock absorber pad is solved, and the applicability and stability of the shock absorber pad is improved.
Patent Information
- Application Number
- CN202422398931.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-09-30
AI Technical Summary
Existing shock absorbing pads are prone to damage when excessive deformation in the axial direction and cannot be applied to slots without gaps, resulting in poor or loss of shock absorbing performance.
The support sleeve is inserted into the through hole of the shock absorber pad to control the maximum axial compressible deformation of the shock absorber pad, and the axial deformation of the shock absorber pad is limited by the support sleeve and the limit retaining ring, and the shock absorber pad is divided into the first and second shock absorber parts to adapt to different slot structures.
Effectively protect the shock absorber pads from excessive axial deformation, improve the scope of application of the shock absorber pads, ensure stable shock absorption performance, and prevent damage to the shock absorber pad structure.
Smart Images
Figure CN223206674U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of batteries, in particular to a BDU shock-absorbing installation structure. Background Art
[0002] The Battery Disconnect Unit (BDU) contains electrical components. The vibration and impact generated during vehicle operation have an adverse effect on the performance stability of the electrical components. Therefore, shock absorption performance usually needs to be considered during BDU installation.
[0003] The existing shock-absorbing pad has a mounting hole and multiple slots, which are spaced apart along the circumference of the mounting hole and are connected to the mounting hole. The existing shock-absorbing mechanism includes a connector, a box frame, a bearing, and a shock-absorbing pad. The shock-absorbing pad is inserted into the slot of the box frame, and the connector passes through the mounting hole and is connected to the bearing.
[0004] However, such conventional shock-absorbing pads and shock-absorbing mechanisms still have the following defects:
[0005] First, the shock-absorbing pad is only applicable to slots with notches, and the shock-absorbing pad can only be pushed into the slots horizontally; for slots without notches, the shock-absorbing pad of the utility model cannot be installed in the slots.
[0006] Second, only the damage caused by the radial excessive deformation of the shock-absorbing pad to the shock-absorbing pad is considered, but it is not considered that in addition to the radial deformation, the shock-absorbing pad will also undergo axial excessive deformation when subjected to large vibrations and impacts. This axial excessive deformation will also cause the shock-absorbing performance of the shock-absorbing pad to deteriorate and even destroy the shock-absorbing pad structure. Utility Model Content
[0007] The utility model provides a BDU shock-absorbing mounting structure, which controls the maximum axial compressible deformation of the shock-absorbing pad by inserting a support sleeve with a length less than a specific value of the shock-absorbing pad height into the through hole of the shock-absorbing pad, thereby solving the technical problem of damage caused by excessive axial extrusion of the shock-absorbing pad.
[0008] The technical solution of the present invention to solve the above problems is: to provide a BDU shock-absorbing mounting structure, including a BDU assembly, a mounting bracket, and a plurality of shock-absorbing pads, the BDU assembly is fixed on the mounting bracket, and fixing feet are provided on all four sides of the mounting bracket, and mounting holes are provided on the fixing feet, and through holes are provided on the shock-absorbing pads for bolt insertion, the shock-absorbing pads are arranged in the mounting holes, and the bolts are connected to the battery bracket from the through holes downward, and the shock-absorbing pads abut against the nut end of the bolt upward and abut against the battery bracket downward, thereby forming a buffer between the BDU assembly and the battery bracket; it also includes a support sleeve arranged in the through hole and sleeved on the bolt, the length of the support sleeve is less than the length of the through hole, and the difference between the length of the support sleeve and the height of the shock-absorbing pad is the maximum axial compressible deformation of the shock-absorbing pad.
[0009] Furthermore, the length difference between the support sleeve and the through hole is 2.5-3.5 mm.
[0010] Furthermore, an upper limit retaining ring is provided at the upper end of the support sleeve, and the upper limit retaining ring and the upper end of the shock-absorbing pad block and limit each other to prevent the support sleeve from falling downward out of the through hole; the upper limit retaining ring is also used to be spaced between the nut of the bolt and the upper end face of the shock-absorbing pad to protect the shock-absorbing pad.
[0011] Furthermore, it also includes an annular groove arranged in the middle part of the outer side of the shock-absorbing pad; when the shock-absorbing pad is arranged in the mounting hole, the shock-absorbing pad is axially limited at the mounting hole through the annular groove.
[0012] Furthermore, the shock-absorbing pad includes a first shock-absorbing part and a second shock-absorbing part. The first shock-absorbing part is inserted into the mounting hole from top to bottom, and the second shock-absorbing part is inserted into the mounting hole from bottom to top. The first shock-absorbing part and the second shock-absorbing part are docked in the mounting hole to form a complete shock-absorbing pad.
[0013] Furthermore, the support sleeve includes a first plug-in portion and a second plug-in portion, the first plug-in portion is inserted into the first shock-absorbing portion from top to bottom, the first plug-in portion is used to support the first shock-absorbing portion, and the upper limit retaining ring is arranged at the upper end of the first plug-in end; the second plug-in portion is inserted into the second shock-absorbing portion from bottom to top, and the second plug-in portion is used to support the second shock-absorbing portion.
[0014] Furthermore, a lower limit retaining ring is provided at the lower end of the second plug-in portion, and the lower limit retaining ring is used to be spaced between the lower end of the shock absorbing portion and the battery bracket to protect the shock absorbing pad.
[0015] Furthermore, the length of the first plug-in portion is smaller than the height of the first shock-absorbing portion, and the length of the second plug-in portion is also smaller than the height of the second shock-absorbing portion. The first plug-in portion and the second plug-in portion form a gap in the middle of the shock-absorbing pad, and a flexible buffer ring is also provided in the gap to prevent the first plug-in portion and the second plug-in portion from colliding with each other.
[0016] Furthermore, the outer sides of the first shock-absorbing part and the second shock-absorbing part are both provided with limiting grooves, and the upper end surface and lower end surface of the fixed foot are both provided with limiting protrusions, the limiting protrusion on the upper end surface cooperates with the limiting groove of the first shock-absorbing part to limit the rotation of the first shock-absorbing part, and the limiting protrusion on the lower end surface cooperates with the limiting groove of the second shock-absorbing part to limit the rotation of the second shock-absorbing part.
[0017] Furthermore, it also includes a structural plate arranged vertically at the edge of the fixed foot, which is used to improve the structural strength of the fixed foot; the structural plate is also supported between the fixed foot and the battery bracket to cooperate with the support sleeve to control the maximum axial deformation of the shock-absorbing pad.
[0018] Beneficial effects of the utility model:
[0019] The utility model provides a BDU shock-absorbing mounting structure, which arranges a support sleeve in the shock-absorbing pad and makes the length of the support sleeve smaller than the height of the shock-absorbing pad, so that when the shock-absorbing pad is axially compressed due to vibration and impact, the shock-absorbing pad can only be shortened to a maximum length equivalent to the support sleeve, thereby controlling the maximum axial compressible deformation of the shock-absorbing pad and avoiding excessive axial deformation of the shock-absorbing pad.
[0020] The shock-absorbing pad is divided into a first shock-absorbing part and a second shock-absorbing part at the annular groove, so that no matter whether there is a notch in the mounting hole, the first shock-absorbing part and the second shock-absorbing part can be directly inserted into the mounting hole, thereby improving the applicability of the shock-absorbing pad.
[0021] After the shock-absorbing pad is divided into the first shock-absorbing part and the second shock-absorbing part, the supporting sleeve is also divided into the first plug-in part and the second plug-in part. The first plug-in part is used to support and protect the first shock-absorbing part, and the second plug-in part is used to support and protect the second shock-absorbing part, so as to effectively protect the shock-absorbing pad. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present invention, but not all. Those skilled in the art can derive other drawings from these drawings without inventive effort.
[0023] Figure 1 This is an exploded view of the overall structure of the BDU shock-absorbing mounting structure of this embodiment;
[0024] Figure 2 This is an overall structural diagram of the BDU shock-absorbing installation structure of this embodiment;
[0025] Figure 3 for Figure 1A partial enlarged view of
[0026] Figure 4 is a cross-sectional view of the shock-absorbing pad of this embodiment;
[0027] 1-BDU assembly;
[0028] 2-mounting bracket, 21-fixing foot, 22-mounting hole, 23-limiting protrusion, 24-structural plate;
[0029] 3- shock-absorbing pad, 31- through hole, 32- annular groove, 33- first shock-absorbing part, 34- second shock-absorbing part;
[0030] 4-support sleeve, 41-upper limit retaining ring, 42-lower limit retaining ring, 43-first plug-in part, 44-second plug-in part;
[0031] 5-Flexible buffer ring. DETAILED DESCRIPTION
[0032] In this specification, directional terms such as up, down, left, right, front, back, front, back, top, and bottom, which are mentioned or may be mentioned, are defined relative to the configurations shown in the accompanying drawings. The terms "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may vary depending on the location and usage of the component. Therefore, these or other directional terms should not be construed as restrictive.
[0033] First embodiment:
[0034] See also Figures 1 to 4 The utility model discloses a BDU shock-absorbing mounting structure according to a specific embodiment, including a BDU assembly 1, a mounting bracket 2, and a plurality of shock-absorbing pads 3; the bottom of the mounting bracket 2 is rectangular and has an opening on the top, and the BDU assembly 1 is fixedly mounted in the open area of the mounting bracket 2. The lower outer portion of the mounting bracket 2 is provided with four fixing legs 21, and the four fixing legs 21 are respectively arranged at the four corners of the mounting bracket 2; the four fixing legs 21 are all horizontal plate structures, and the four fixing legs 21 are provided with mounting holes 22, and each mounting hole 22 is provided with a shock-absorbing pad. Pad 3; a through hole 31 is vertically opened in the middle of the shock-absorbing pad 3. When the shock-absorbing pad 3 is arranged in the mounting hole 22, the bolt can pass through the through hole 31 to pass downward through the connecting hole on the battery bracket, and the screw end of the bolt passing through the lower side of the battery bracket is also provided with a limiting nut. At this time, there is a part of the body of the shock-absorbing pad 3 between the nut end of the bolt and the fixed foot 21, and there is also a part of the body of the shock-absorbing pad 3 between the battery bracket and the fixed foot 21, so that the shock-absorbing pad 3 can be used as a buffer structure in the BDU assembly 1 and the battery bracket to absorb vibration and impact, thereby protecting the BDU assembly 1.
[0035] In the first embodiment, the battery bracket is part of the main structure of the battery, and the BDU is fixed to the battery by being mounted on the battery bracket. The battery bracket is two parallel bars, and the cross-section of the battery bracket is U-shaped; Figure 2 Taking the direction shown in as an example, the two strip rods are respectively located at the right front end and the left rear end of the mounting bracket 2, and the two fixed feet 21 at the left rear end and the two fixed feet 21 at the right front end of the mounting bracket 2 are each correspondingly set on a strip rod to realize the installation of the BDU.
[0036] It is worth mentioning that a support sleeve 4 is inserted into the through hole 31 of the shock-absorbing pad 3 and is also sleeved on the bolt. The support sleeve 4 is a metal tube or a hard plastic tube, and the length of the support sleeve 4 is 3mm less than the height of the shock-absorbing pad 3. In this regard, when the shock-absorbing pad 3 is subjected to external vibration or impact and undergoes axial compression deformation, and the axial compression deformation reaches 3mm, the upper end of the support sleeve 4 will abut the nut end of the bolt, and the lower end will abut the battery bracket due to the compression of the shock-absorbing pad 3, thereby preventing the shock-absorbing pad 3 from further compression, thereby preventing the shock-absorbing pad 3 from being damaged by excessive compression or deformed due to excessive compression, and preventing the shock-absorbing performance of the shock-absorbing pad 3 from deteriorating or even completely losing.
[0037] In other embodiments, technicians can select a specific length of the support sleeve 4 within a length range of 2.5-3.5 mm less than the length of the shock-absorbing pad 3 based on the vibration and impact intensity that the battery will face in the actual working environment; for example, in an environment with strong vibration and impact, technicians can select a support sleeve 4 with a length 3.5 mm less than the shock-absorbing pad 3, so that the axial deformable amount of the shock-absorbing pad 3 can reach a maximum of 3.5 mm, and the buffering performance of the shock-absorbing pad 3 is maximized while ensuring the supporting and protective effect of the support sleeve 4.
[0038] In the first embodiment, the diameter of the support sleeve 4 is smaller than the diameter of the through hole 31 of the shock-absorbing pad 3; in this way, when the support sleeve 4 is inserted into the shock-absorbing pad 3, a gap appears between the support sleeve 4 and the shock-absorbing pad 3, so as to reduce the contact friction between the support sleeve 4 and the shock-absorbing pad 3, so as to avoid the support sleeve 4 hindering the elastic deformation of the shock-absorbing pad 3, thereby affecting the buffering performance of the shock-absorbing pad 3.
[0039] Furthermore, an upper limit retaining ring 41 is provided at the upper end of the support sleeve 4. The upper limit retaining ring 41 is a metal ring-shaped baffle integrally provided at the upper end of the support sleeve 4, and the upper limit retaining ring 41 extends outward from the upper end of the support sleeve 4. In this regard, the upper limit retaining ring 41 can overlap the upper end surface of the shock-absorbing pad 3, thereby vertically limiting the support sleeve 4 to prevent the support sleeve 4 from falling downward out of the through hole 31 during installation. Moreover, the upper limit retaining ring 41 can also be spaced between the nut of the bolt and the upper end surface of the shock-absorbing pad 3 to prevent the bolt from contacting the shock-absorbing pad 3 during rotation, thereby causing wear of the shock-absorbing pad 3.
[0040] In the first embodiment, an annular groove 32 is further provided in the middle portion of the outer side of the shock absorbing pad 3 ; the shock absorbing pad 3 is engaged with the fixing leg 21 through the annular groove 32 , and is then limited in the upper and lower positions of the fixing leg 21 at the mounting hole 22 .
[0041] It should be noted that, in order to mount the shock-absorbing pad 3 in the mounting hole 22, the fixing leg 21 of the first embodiment is a plate structure with a notch. In other words, the shock-absorbing pad 3 can be pushed laterally into the mounting hole 22 and, through the annular groove 32, engages with the fixing leg 21, thereby being mounted in the mounting hole 22.
[0042] In addition, the fixing foot 21 with a notch is a relatively common fixing installation structure, which is not drawn in the accompanying drawings.
[0043] Second embodiment:
[0044] On the basis of the first embodiment, the shock-absorbing pad 3 is transversely divided in the middle part of the annular groove 32 to form two split structures of a first shock-absorbing part 33 and a second shock-absorbing part 34. The first shock-absorbing part 33 can be inserted downwardly into the top of the mounting hole 22, and the second shock-absorbing part 34 can be inserted upwardly into the bottom of the mounting hole 22. The first shock-absorbing part 33 and the second shock-absorbing part 34 are correspondingly docked in the mounting hole 22 to assemble to form a complete shock-absorbing pad 3; in this regard, the shock-absorbing pad 3 can also be installed when facing a fixed foot 21 without a notch.
[0045] Of course, the first shock absorbing part 33 and the second shock absorbing part 34 can be installed by swapping their positions up and down, and the two can also be combined to form a complete shock absorbing pad 3.
[0046] In the second embodiment, a lower limit retaining ring 42 is provided at the lower end of the support sleeve 4 . The lower limit retaining ring 42 is used to be spaced between the lower end of the shock absorbing part and the battery bracket to protect the shock absorbing pad 3 .
[0047] In order to enable the support sleeve 4 to be inserted and installed in the through hole 31 of the shock-absorbing pad 3, the support sleeve 4 is also divided into a first plug-in portion 43 and a second plug-in portion 44. The upper limit single circle is located at the upper end of the first plug-in portion 43. The first plug-in portion 43 is inserted from top to bottom in the first shock-absorbing portion 33, and the first plug-in portion 43 is used to support the first shock-absorbing portion 33; the second plug-in portion 44 is inserted from bottom to top in the second shock-absorbing portion 34, and the second plug-in portion 44 is used to support the second shock-absorbing portion 34.
[0048] Of course, the first inserting portion 43 may also be inserted into the second shock absorbing portion 34 to support the second shock absorbing portion 34 , and the second inserting portion 44 may also be inserted into the first shock absorbing portion 33 to support the first shock absorbing portion 33 .
[0049] Moreover, the length of the first plug-in portion 43 is smaller than the height of the first shock-absorbing portion 33, and the length of the second plug-in portion 44 is also smaller than the height of the second shock-absorbing portion 34; in this regard, when the first shock-absorbing portion 33 and the second shock-absorbing portion 34 are docked in the mounting hole 22, a gap will be generated between the first plug-in portion 43 and the second plug-in portion 44 at the middle part of the shock-absorbing pad 3, and the gap will change from large to small or from small to large as the first shock-absorbing portion 33 and / or the second shock-absorbing portion 34 are deformed. When the gap disappears, it means that the first plug-in portion 43 and the second plug-in portion 44 are docked with each other, and at this time, the axial deformation of the shock-absorbing pad 3 is at its maximum value.
[0050] In the second embodiment, in order to prevent the first plug-in portion 43 and the second plug-in portion 44 from colliding with each other, a flexible buffer ring 5 is further provided in the gap. The inner and outer diameters of the flexible buffer ring 5 are equivalent to the inner and outer diameters of the support sleeve 4, and the flexible buffer ring 5 is made of rubber material.
[0051] In the second embodiment, limiting grooves are provided on the outer sides of the first shock-absorbing part 33 and the second shock-absorbing part 34, and limiting protrusions 23 are provided on the upper end surface and the lower end surface of the fixing foot 21. The limiting protrusion 23 on the upper end surface cooperates with the limiting groove of the first shock-absorbing part 33 to limit the rotation of the first shock-absorbing part 33, and the limiting protrusion 23 on the lower end surface cooperates with the limiting groove of the second shock-absorbing part 34 to limit the rotation of the second shock-absorbing part 34; in this regard, the first shock-absorbing part 33 and the second shock-absorbing part 34 will not rotate when facing impact or vibration, and neither of them will drive the bolt to rotate, causing the bolt to loosen.
[0052] In the second embodiment, a structural plate 24 is integrally provided vertically along the edge of the fixing leg 21. The side edges of the structural plate 24 are also integrally connected to the mounting bracket 2 to enhance the structural strength of the fixing leg 21. Furthermore, the structural plate 24 forms an enclosed support structure on the underside of the fixing leg 21 to further prevent excessive compression of the shock-absorbing pad 3. Technicians can also control the vertical height of the structural plate 24 to ensure that the distance between the structural plate 24 and the lower end surface of the installed and natural shock-absorbing pad 3 is greater than 3.5 mm. This ensures that even after the support sleeve 4 deforms, the shock-absorbing pad 3 can still be supported and protected by the structural plate 24.
[0053] Any matters not mentioned above are applicable to the prior art.
[0054] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the above embodiments, or that some of the technical features may be replaced with equivalents; and such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.
Claims
1. A BDU shock-absorbing installation structure, characterized in that: The invention comprises a BDU assembly (1), a mounting bracket (2), and a plurality of shock-absorbing pads (3), wherein the BDU assembly (1) is fixed on the mounting bracket (2), and the mounting bracket (2) is provided with fixing feet (21) on all four sides, and the fixing feet (21) are provided with mounting holes (22), and the shock-absorbing pads (3) are provided with through holes (31) for bolt insertion, and the shock-absorbing pads (3) are arranged in the mounting holes (22), and the bolts are connected to the battery bracket downward from the through holes (31), and the shock-absorbing pads (3) abut against the nut end of the bolt upward and abut against the battery bracket downward, thereby forming a buffer between the BDU assembly (1) and the battery bracket; and further comprises a support sleeve (4) arranged in the through holes (31) and sleeved on the bolts, wherein the length of the support sleeve (4) is less than the length of the through holes (31), and the difference between the length of the support sleeve (4) and the height of the shock-absorbing pad (3) is the maximum axial compressible deformation of the shock-absorbing pad (3).
2. The BDU shock-absorbing mounting structure according to claim 1, characterized in that: The length difference between the support sleeve (4) and the through hole (31) is 2.5-3.5 mm.
3. The BDU shock-absorbing mounting structure according to claim 1, wherein: An upper limit retaining ring (41) is provided at the upper end of the support sleeve (4), and the upper limit retaining ring (41) and the upper end of the shock-absorbing pad (3) block each other to prevent the support sleeve (4) from falling downward out of the through hole (31); the upper limit retaining ring (41) is also used to be spaced between the nut of the bolt and the upper end surface of the shock-absorbing pad (3) to protect the shock-absorbing pad (3).
4. The BDU shock-absorbing mounting structure according to claim 3, wherein: It also includes an annular groove (32) provided in the middle of the outer side of the shock-absorbing pad (3); when the shock-absorbing pad (3) is provided in the mounting hole (22), the shock-absorbing pad (3) is axially limited at the mounting hole (22) by the annular groove (32).
5. The BDU shock-absorbing mounting structure according to claim 3, characterized in that: The shock-absorbing pad (3) comprises a first shock-absorbing portion (33) and a second shock-absorbing portion (34); the first shock-absorbing portion (33) is plugged into the mounting hole (22) from top to bottom; the second shock-absorbing portion (34) is plugged into the mounting hole (22) from bottom to top; the first shock-absorbing portion (33) and the second shock-absorbing portion (34) are butted together in the mounting hole (22) to form a complete shock-absorbing pad (3).
6. The BDU shock-absorbing mounting structure according to claim 5, characterized in that: The support sleeve (4) comprises a first plug-in portion (43) and a second plug-in portion (44); the first plug-in portion (43) is inserted into the first shock-absorbing portion (33) from top to bottom, and the first plug-in portion (43) is used to support the first shock-absorbing portion (33); the upper limit retaining ring (41) is provided at the upper end of the first plug-in end; the second plug-in portion (44) is inserted into the second shock-absorbing portion (34) from bottom to top, and the second plug-in portion (44) is used to support the second shock-absorbing portion (34).
7. The BDU shock-absorbing mounting structure according to claim 6, wherein: A lower limit retaining ring (42) is provided at the lower end of the second plug-in portion (44). The lower limit retaining ring (42) is used to be spaced between the lower end of the shock absorbing portion and the battery bracket to protect the shock absorbing pad (3).
8. The BDU shock-absorbing mounting structure according to claim 7, wherein: The length of the first plug-in portion (43) is less than the height of the first shock-absorbing portion (33), and the length of the second plug-in portion (44) is also less than the height of the second shock-absorbing portion (34). The first plug-in portion (43) and the second plug-in portion (44) form a gap in the middle of the shock-absorbing pad (3), and a flexible buffer ring (5) is provided in the gap to prevent the first plug-in portion (43) and the second plug-in portion (44) from colliding with each other.
9. The BDU shock-absorbing mounting structure according to claim 5, wherein: The outer sides of the first shock absorbing part (33) and the second shock absorbing part (34) are both provided with limiting grooves, and the upper end surface and the lower end surface of the fixed foot (21) are both provided with limiting protrusions (23), the limiting protrusions (23) on the upper end surface cooperate with the limiting groove of the first shock absorbing part (33) to limit the rotation of the first shock absorbing part (33), and the limiting protrusions (23) on the lower end surface cooperate with the limiting groove of the second shock absorbing part (34) to limit the rotation of the second shock absorbing part (34).
10. The BDU shock-absorbing installation structure according to claim 1, wherein: It also includes a structural plate (24) arranged at the edge of the fixed foot (21) and pointing vertically downward, and the structural plate (24) is used to improve the structural strength of the fixed foot (21); the structural plate (24) body is also supported between the fixed foot (21) and the battery bracket to cooperate with the support sleeve (4) to control the maximum axial deformation of the shock-absorbing pad (3).