Novel adjustable bumper sleeve structure
By designing an adjustable bumper sleeve structure, the problem of insufficient sleeve length in existing systems has been solved, enabling flexible adjustment of sleeve length and stable assembly, and simplifying the operation process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGSHU CITY LANDALAJIC STEEL PIPE ACCESSORIES
- Filing Date
- 2025-05-07
- Publication Date
- 2026-04-17
AI Technical Summary
The existing bumper sleeves have fixed dimensions, which means that when the connecting shaft is too long, a new sleeve needs to be replaced and welded, making the operation cumbersome.
A novel adjustable bumper sleeve structure has been designed, comprising an adjustable adjustment part, a fixing part, a fixing ring, a locking bolt, and a locking nut. The sleeve length can be adjusted and securely assembled through the cooperation of the internal threaded hole and the oblique fixing groove.
The compatibility and assembly stability of the bumper sleeve have been improved, and the sleeve length adjustment process has been simplified.
Smart Images

Figure CN224131015U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of bumper sleeve technology and relates to a novel adjustable bumper sleeve structure. Background Technology
[0002] Bumper sleeves are an important component of the bumper, and they are assembled by connecting shafts on both sides of the bumper to the surface of the car's crossbeam.
[0003] Currently, bumper sleeves are generally manufactured according to specified dimensions, and the size of the bumper sleeve is fixed. When the connecting shaft is too long, different bumper sleeves need to be replaced. This requires cutting the existing bumper sleeve first and then welding the new bumper sleeve, which is a cumbersome operation. To address this, we have designed a new adjustable bumper sleeve structure to solve the problem of insufficient bumper sleeve length. Summary of the Invention
[0004] The purpose of this invention is to provide a novel adjustable bumper sleeve structure to solve the problems mentioned in the background art.
[0005] The objective of this utility model can be achieved through the following technical solution: a novel adjustable bumper sleeve structure, comprising a bumper sleeve body, one end of which is provided with an adjustable adjustment part, the center of which is provided with an internal threaded hole, the other end of which is fixedly provided with a fixing part, the surface of which is provided with a plurality of mounting holes equidistantly arranged in the circumferential direction, a fixing ring is sleeved and connected to the surface of the bumper sleeve body, and a plurality of locking bolts are inserted and connected equidistantly in the circumferential direction on the surface of the fixing ring, and the plurality of locking bolts are threaded and connected to locking nuts through the corresponding mounting holes.
[0006] In the aforementioned novel adjustable bumper sleeve structure, an integral adjustment ring is fixedly provided at the end of the adjustment part inside the bumper sleeve body, and the size of the adjustment ring is adapted to the inner diameter of the bumper sleeve body.
[0007] In the above-mentioned novel adjustable bumper sleeve structure, multiple centrally symmetrical inner inclined fixing grooves are equidistantly opened on both sides of the inner wall of the bumper sleeve body, and retractable inclined fixing blocks are provided on both sides of the adjusting ring, with two inclined fixing blocks embedded in the corresponding inner inclined fixing grooves.
[0008] In the above-mentioned novel adjustable bumper sleeve structure, mounting grooves are provided on both sides of the inner wall of the adjusting ring, and connecting plates are nested inside the two mounting grooves. The top ends of the two connecting plates are fixedly connected to the bottom ends of the corresponding inclined fixing blocks.
[0009] In the aforementioned novel adjustable bumper sleeve structure, a return spring is fixedly installed at the bottom of each of the two mounting slots, and the top ends of the two return springs are fixedly connected to the bottom end of the corresponding connecting plate.
[0010] In the aforementioned novel adjustable bumper sleeve structure, a through hole is provided at the other end of the bumper sleeve body, and the inner diameter of the through hole is the same as the size of the internal thread hole of the adjustment part.
[0011] Compared with the prior art, the advantages of the novel adjustable bumper sleeve structure of this utility model are:
[0012] 1. The bumper sleeve has an adjustable adjustment part, which can adjust the length of the bumper sleeve according to the length of the connecting shaft, thus improving the adaptability of the bumper sleeve.
[0013] 2. The bumper sleeve, through the cooperation of the fixing part and the fixing ring, and through the cooperation of multiple locking bolts and locking nuts distributed circumferentially along the fixing ring, effectively improves the stability of the bumper sleeve assembly. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the novel adjustable bumper sleeve structure of this utility model.
[0015] Figure 2 This is a cross-sectional schematic diagram of the novel adjustable bumper sleeve structure of this utility model.
[0016] Figure 3 This is a schematic diagram of the connection structure between the adjusting ring and the main body of the novel adjustable bumper sleeve structure.
[0017] In the diagram, 1. Bumper sleeve body; 2. Adjustment part; 3. Fixing part; 4. Fixing ring; 5. Locking bolt; 6. Inner oblique fixing groove; 7. Locking nut; 8. Through hole; 9. Adjustment ring; 10. Mounting groove; 11. Oblique fixing block; 12. Return spring; 13. Connecting plate. Detailed Implementation
[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0019] like Figure 1 , Figure 2 and Figure 3As shown, the novel adjustable bumper sleeve structure of this utility model includes a bumper sleeve body 1. One end of the bumper sleeve body 1 is provided with an adjustable adjustment part 2. An internal threaded hole is opened at the center of the adjustment part 2. The other end of the bumper sleeve body 1 is fixedly provided with a fixing part 3. Multiple mounting holes are opened at equal intervals along the circumference on the surface of the fixing part 3. A fixing ring 4 is sleeved and connected to the surface of the bumper sleeve body 1. Multiple locking bolts 5 are inserted and connected at equal intervals along the circumference on the surface of the fixing ring 4. The multiple locking bolts 5 are threaded and connected to locking nuts 7 through the corresponding mounting holes.
[0020] Specifically, the bumper sleeve has an adjustable adjustment part 2, which allows the length of the bumper sleeve to be adjusted according to the length of the connecting shaft, thus improving the adaptability of the bumper sleeve.
[0021] like Figure 1 , Figure 2 and Figure 3 As shown, the novel adjustable bumper sleeve structure of this utility model has an adjustment ring 9 fixedly installed at the end of the adjustment part 2 inside the bumper sleeve body 1. The size of the adjustment ring 9 is adapted to the inner diameter of the bumper sleeve body 1.
[0022] Multiple symmetrical inner inclined fixing grooves 6 are provided on both sides of the inner wall of the bumper sleeve body 1. Retractable inclined fixing blocks 11 are provided on both sides of the adjusting ring 9. The two inclined fixing blocks 11 are embedded in the corresponding inner inclined fixing grooves 6.
[0023] The inner walls of the adjusting ring 9 are provided with mounting grooves 10 on both sides. The two mounting grooves 10 are each nested with a connecting plate 13. The top of the two connecting plates 13 is fixedly connected to the bottom of the corresponding inclined fixing block 11.
[0024] A reset spring 12 is fixedly installed at the bottom of each of the two mounting slots 10, and the top of each reset spring 12 is fixedly connected to the bottom of the corresponding connecting plate 13.
[0025] Specifically, the extension of the inclined fixing block 11 is controlled by the return spring 12, and the retraction of the inclined fixing block 11 is controlled by the side of the inclined fixing block 11 contacting the inclined surface of the inner inclined fixing groove 6. This facilitates the insertion of the inclined fixing block 11 into the inner inclined fixing groove 6 at different positions on both sides of the inner wall of the bumper sleeve body 1, thereby facilitating the extension and retraction of the adjustment part 2 and realizing the length adjustment of the bumper sleeve.
[0026] The other end of the bumper sleeve body 1 is provided with a through hole 8, and the inner diameter of the through hole 8 is the same as the size of the internal thread hole of the adjustment part 2.
[0027] Specifically, the size of the through hole 8 is adapted to the size of the internal thread hole, which facilitates the nesting of the bumper sleeve and the connecting shaft.
[0028] In specific implementation, when the bumper sleeve is being assembled, the length of the bumper sleeve is first adjusted according to the length of the assembly connecting shaft. The adjusting part 2 is manually rotated, and the adjusting ring 9 is driven to rotate synchronously through the adjusting part 2. This causes the inclined fixing blocks 11 on both sides of the adjusting ring 9 to be squeezed and contracted into the interior of the mounting groove 10 by the inclined surface of the inner inclined fixing groove 6. Then, the adjusting part 2 is manually pushed or pulled to control the extension and retraction of the adjusting part 2. After adjusting to the corresponding length, the adjusting part 2 is rotated again. When the inclined fixing block 11 inside the adjusting ring 9 is aligned with the corresponding inner inclined fixing groove 6, the return spring 12 pushes the inclined fixing block 11 to be embedded and fixed in the inner inclined fixing groove 6.
[0029] Next, the bumper sleeve body 1 is assembled. The fixing ring 4 with the locking bolt 5 is fitted onto the bumper sleeve body 1, and then the assembly and fixation are achieved by the cooperation of the locking bolt 5 and the locking nut 7.
[0030] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention 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 invention or exceeding the scope defined by the appended claims.
Claims
1. A new adjustable bumper sleeve structure comprising a bumper sleeve main body (1), characterized in that, One end of the bumper sleeve body (1) is provided with an adjustable adjustment part (2), and an internal thread hole is provided at the center of the adjustment part (2). The other end of the bumper sleeve body (1) is fixedly provided with a fixing part (3). The surface of the fixing part (3) is provided with multiple mounting holes at equal intervals along the circumference. A fixing ring (4) is sleeved and connected to the surface of the bumper sleeve body (1). Multiple locking bolts (5) are inserted and connected at equal intervals along the circumference on the surface of the fixing ring (4). The multiple locking bolts (5) are threaded through the corresponding mounting holes and connected with locking nuts (7).
2. The novel adjustable bumper sleeve structure according to claim 1, wherein, An adjustment ring (9) is fixedly provided at the end of the adjustment part (2) inside the bumper sleeve body (1), and the size of the adjustment ring (9) is adapted to the inner diameter of the bumper sleeve body (1).
3. The novel adjustable bumper sleeve structure of claim 2, wherein, The inner wall of the bumper sleeve body (1) is provided with multiple symmetrical inner inclined fixing grooves (6) on both sides. The adjusting ring (9) is provided with retractable inclined fixing blocks (11) on both sides. The two inclined fixing blocks (11) are embedded in the corresponding inner inclined fixing grooves (6).
4. The novel adjustable bumper sleeve structure of claim 3, wherein, The inner walls of the adjusting ring (9) are provided with mounting grooves (10) on both sides. The two mounting grooves (10) are each nested with a connecting plate (13). The top of the two connecting plates (13) is fixedly connected to the bottom of the corresponding inclined fixing block (11).
5. The novel adjustable bumper sleeve structure of claim 4, wherein, A reset spring (12) is fixedly installed at the bottom of each of the two mounting slots (10), and the top of each reset spring (12) is fixedly connected to the bottom of the corresponding connecting plate (13).
6. The new adjustable bumper sleeve structure according to claim 1, wherein, The other end of the bumper sleeve body (1) is provided with a through hole (8), the inner diameter of which is the same as the size of the internal thread hole of the adjustment part (2).