A heat insulation bushing for automotive engines
Through innovative design of fixing straps, fixing seats, through holes and auxiliary components, the problems of unstable fixing and low adjustment accuracy of thermal insulation bushings are solved, achieving high-precision fixing and tight fit, and adapting to the thermal insulation effect of different installation requirements.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANCHENG DINGJIA MASCH CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-05-26
AI Technical Summary
Existing methods for installing and fixing automotive engine heat insulation bushings suffer from problems such as insecure fixing and low adjustment precision. In particular, the Velcro fastening is not secure enough, and the tie-on buckle method results in low adjustment precision due to the spacing of the buckle holes, affecting the installation effect of the device.
The design incorporates a combination of a fixing strap, a fixing seat, through holes, fixing blocks, and auxiliary components. Through the cooperation of the toothed structure and springs, the fixing strap can be precisely adjusted and firmly fixed. The locking blocks and mounting grooves in the auxiliary components allow for free assembly and disassembly of the fixing seat to meet different installation requirements.
It achieves high-precision fixing and tight fit of the heat insulation bushing, improving the heat insulation effect, and the fixing base can be freely disassembled and installed to adapt to the needs of different installation scenarios.
Smart Images

Figure CN224282779U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts technology, specifically a heat insulation bushing for automotive engines. Background Technology
[0002] Engine heat insulation bushings are a crucial component of automotive engines, effectively insulating against heat to prevent overheating and protect the engine's normal operation. Typically composed of one or more layers of insulating material, heat insulation bushings effectively isolate the engine from external temperature differences in high-temperature environments. They are mainly divided into inner and outer heat insulation parts. Inner heat insulation: During engine operation, a significant amount of heat is generated. The inner heat insulation bushing is located on the outside of various engine cooling components (such as coolant lines and intake manifolds), serving to insulate against heat, reduce heat conduction, and prevent excessive heat loss. Currently, heat insulation bushings are typically installed and secured using Velcro or tie-down clips after being wrapped around the pipe surfaces. Velcro fastening is not secure enough, and tie-down clips suffer from low adjustment precision due to gaps between the clips, resulting in inaccurate and unsatisfactory installation. Summary of the Invention
[0003] The purpose of this utility model is to provide a heat insulation bushing for automotive engines to solve the problems mentioned in the background art, where existing heat insulation bushings are usually installed and fixed by Velcro or tie-on buckles after covering the pipe surface. Velcro fixation is not strong enough, and the tie-on buckle method has low adjustment accuracy and cannot be accurately fixed due to the certain gap between the buckle holes, resulting in poor installation and fixing effect of the device.
[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0005] This utility model is a heat insulation bushing for an automotive engine, comprising:
[0006] Thermal insulation bushing body;
[0007] The fixing component includes a fixing strap, a fixing seat, a through hole, a spring, and a fixing block;
[0008] The fixing seat is disposed on the surface of the heat insulation bushing body, the fixing band is fixedly connected to the side of the fixing seat, the through hole is opened inside the fixing seat, the fixing block is embedded inside the fixing seat, and the spring is fixedly connected between the fixing block and the fixing seat.
[0009] Furthermore, the side end of the fixing block and the surface of the fixing belt both have a toothed structure, the fixing block and the fixing belt mesh with each other, and the toothed grooves on the surfaces of the fixing belt and the fixing block both have a right-angled triangular structure.
[0010] Furthermore, the fixing block has a T-shaped structure, and the surface of the fixing block is tightly fitted with the inner wall of the through hole.
[0011] Furthermore, the side of the through hole is connected to a groove, and a bolt is embedded inside the groove. The bolt and the groove are connected by an interlocking structure, and the end of the bolt abuts against the surface of the fixing block.
[0012] Furthermore, it also includes auxiliary components;
[0013] The auxiliary components include a control block, a mounting slot, a locking block, a connecting plate, a second spring, and a through slot;
[0014] The mounting groove is formed on the surface of the heat insulation bushing body, the through groove is formed inside the fixing seat, the second spring is embedded inside the through groove, the connecting plate is fixedly connected to the side end of the second spring, the control block is fixedly connected to the outer surface of the connecting plate, and the locking block is set on the side of the control block.
[0015] Furthermore, the card block and the mounting groove are connected by a snap-fit structure, and the fixing seat and the heat insulation bushing body are connected by a detachable structure.
[0016] Furthermore, the outer surface of the card block has a beveled structure, and the end of the card block is tangent to the port of the mounting groove.
[0017] This utility model has the following beneficial effects:
[0018] I. This utility model includes a fixing strap, a fixing seat, a through hole, and a fixing block. The fixing strap is wrapped around the outer surface of the heat insulation bushing body and passes through the through hole inside the fixing seat. The length of the fixing strap can be precisely adjusted and fixed by the toothed meshing structure between the fixing block and the surface of the fixing strap. This step has high adjustment accuracy, tight fit, and better heat insulation effect.
[0019] II. Based on the above-mentioned beneficial effects, a locking block, a mounting slot, and a second spring are provided. The fixed seat can be directly inserted into the mounting slot through the inclined locking block, and then the locking block is reset and popped out by the second spring to complete the locking. The fixed seat can be freely disassembled and assembled between the mounting slot. This step allows for free disassembly and assembly of the fixed seat, and the number of fixed seats used can be selected according to the needs, resulting in better performance of the device. Attached Figure Description
[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is the front view of the present invention;
[0022] Figure 2 This is a front view of the fixing base of this utility model;
[0023] Figure 3 This is a front view of the fixing block of this utility model;
[0024] Figure 4 This is a front view of the auxiliary component of this utility model.
[0025] The attached diagram lists the components represented by each number as follows:
[0026] 11. Main body of the heat insulation bushing;
[0027] 21. Fixing strap; 22. Fixing base; 23. Bolt; 24. Through hole; 25. Groove; 26. Spring 1; 27. Fixing block;
[0028] 31. Control block; 32. Mounting slot; 33. Locking block; 34. Connecting plate; 35. Spring 2; 36. Through slot. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.
[0031] Please see Figure 1-4 As shown, this utility model is a heat insulation bushing for an automotive engine, comprising:
[0032] Thermal insulation bushing body 11;
[0033] The heat insulation bushing body 11 covers the outside of the engine's coolant pipes, intake pipes, etc., to provide heat insulation.
[0034] The fixing component includes a fixing strap 21, a fixing base 22, a through hole 24, a spring 26, and a fixing block 27;
[0035] The fixing seat 22 is disposed on the surface of the heat insulation bushing body 11, the fixing band 21 is fixedly connected to the side of the fixing seat 22, the through hole 24 is opened inside the fixing seat 22, the fixing block 27 is embedded inside the fixing seat 22, and the spring 26 is fixedly connected between the fixing block 27 and the fixing seat 22.
[0036] The fixing seat 22 is used to cooperate with the fixing strap 21 to wrap and fix the heat insulation bushing body 11 to the surface of the engine pipe. The through hole 24 is used to accommodate the fixing strap 21 to pass through. The fixing block 27 is used to snap and position the fixing strap 21. The spring 26 is used to press the fixing block 27 to reset it and snap it firmly with the fixing strap 21.
[0037] The side end of the fixing block 27 and the surface of the fixing band 21 are both toothed and grooved. The fixing block 27 and the fixing band 21 mesh with each other. The toothed grooves on the surfaces of the fixing band 21 and the fixing block 27 are both right-angled triangular structures.
[0038] The toothed meshing structure allows for higher positional adjustment precision of the fixing band 21 and better fixation of the heat insulation bushing body 11. The right-angled triangular structure prevents the fixing band 21 from retracting after the fixing block 27 engages with the fixing band 21.
[0039] The fixing block 27 has a T-shaped structure, and the surface of the fixing block 27 is in close contact with the inner wall of the through hole 24;
[0040] The T-shape facilitates the application of pressure by the two springs 26, and the tight fit makes the snap-fit structure between the fixing block 27 and the fixing band 21 more stable and secure.
[0041] The side of the through hole 24 is connected to a groove 25, and a bolt 23 is embedded inside the groove 25. The bolt 23 and the groove 25 are connected by an interlocking structure, and the end of the bolt 23 abuts against the surface of the fixing block 27.
[0042] The groove 25 is used to accommodate the telescopic movement of the bolt 23, the bolt 23 is used to abut against the fixing block 27, and the bolt 23 plays the role of locking the position of the fixing block 27.
[0043] Working principle: The heat insulation bushing body 11 covers the outside of the engine's coolant pipes, intake pipes, etc., to provide heat insulation.
[0044] The fixing strap 21 is wrapped around the outside of the heat insulation bushing body 11 and then passed through the through hole 24. Under the elastic force of the spring 26 inside the fixing seat 22 on the fixing block 27, the fixing block 27 and the toothed groove on the surface of the fixing strap 21 engage to fix the length of the fixing strap 21. The right-angled triangular toothed groove structure can prevent the fixing strap 21 from being pushed back by the heat insulation bushing body 11. The bolt 23 is rotated inside the groove 25. The bolt 23 pushes and presses against the fixing block 27 to make it firmly engaged with the fixing strap 21.
[0045] This step allows for high adjustment precision, a tight fit, and better insulation.
[0046] Please see Figure 1-4 As shown, this embodiment, based on the above embodiment, also includes auxiliary components;
[0047] The auxiliary components include a control block 31, a mounting slot 32, a locking block 33, a connecting plate 34, a second spring 35, and a through slot 36;
[0048] Mounting groove 32 is formed on the surface of the heat insulation bushing body 11, through groove 36 is formed inside the fixing seat 22, spring 2 35 is embedded in the through groove 36, connecting plate 34 is fixedly connected to the side end of spring 2 35, control block 31 is fixedly connected to the outer surface of connecting plate 34, and locking block 33 is set on the side of control block 31.
[0049] Mounting slot 32 is used to mount the fixed base 22, through slot 36 is used to accommodate the movement of the locking block 33, spring 2 35 is used to push the locking block 33 to make it securely engaged with the mounting slot 32, connecting plate 34 is used to connect spring 2 35 and locking block 33, and control block 31 is used to drive the locking block 33 to move through connecting plate 34.
[0050] The connection between the clip 33 and the mounting groove 32 is a snap-fit connection structure, and the connection between the fixing seat 22 and the heat insulation bushing body 11 is a split connection structure.
[0051] The snap-fit structure between the clip 33 and the mounting groove 32 allows the fixing seat 22 and the heat insulation bushing body 11 to be freely assembled and disassembled, and appropriate fixing points can be selected for binding and fixing according to actual installation needs.
[0052] The outer surface of the locking block 33 has a beveled structure, and the end of the locking block 33 is tangent to the port of the mounting groove 32;
[0053] The end of the locking block 33 is tangent to the port of the mounting slot 32, so that the locking block 33 will not be obstructed when it is installed into the mounting slot 32. The locking block 33 can automatically retract into the through slot 36, making assembly easier.
[0054] Working principle: The fixing seat 22 is inserted into the mounting groove 32. After the locking block 33 contacts the mounting groove 32 through the inclined surface, it will automatically retract into the through groove 36. After the end of the fixing seat 22 is attached to the bottom of the mounting groove 32, the locking block 33 is reset and popped out under the elastic force of the second spring 35 to engage with the mounting groove 32. The fixing seat 22 can be removed by pressing the control block 31 and moving the locking block 33 through the connecting plate 34.
[0055] This step allows for the free assembly and disassembly of the mounting base 22. The number of mounting bases 22 used can be selected according to needs, resulting in better device performance.
[0056] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A heat insulation bushing for an automotive engine, characterized in that, include: Thermal insulation bushing body (11); The fixing component includes a fixing strap (21), a fixing seat (22), a through hole (24), a spring (26), and a fixing block (27). The fixing seat (22) is disposed on the surface of the heat insulation bushing body (11), the fixing band (21) is fixedly connected to the side of the fixing seat (22), the through hole (24) is opened inside the fixing seat (22), the fixing block (27) is embedded inside the fixing seat (22), and the spring (26) is fixedly connected between the fixing block (27) and the fixing seat (22).
2. The heat insulation bushing for an automotive engine according to claim 1, characterized in that, The side end of the fixing block (27) and the surface of the fixing band (21) are both toothed and grooved. The fixing block (27) and the fixing band (21) mesh with each other. The toothed grooves on the surfaces of the fixing band (21) and the fixing block (27) are both right-angled triangular structures.
3. The heat insulation bushing for an automotive engine according to claim 1, characterized in that, The fixing block (27) has a T-shaped structure, and the surface of the fixing block (27) is closely fitted with the inner wall of the through hole (24).
4. The heat insulation bushing for an automotive engine according to claim 1, characterized in that, The side of the through hole (24) is connected to a groove (25), and a bolt (23) is embedded inside the groove (25). The bolt (23) and the groove (25) are connected by an interlocking structure, and the end of the bolt (23) abuts against the surface of the fixing block (27).
5. A heat insulation bushing for an automotive engine according to claim 1, characterized in that, It also includes auxiliary components; The auxiliary components include a control block (31), a mounting slot (32), a locking block (33), a connecting plate (34), a second spring (35), and a through slot (36); The mounting groove (32) is opened on the surface of the heat insulation bushing body (11), the through groove (36) is opened inside the fixing seat (22), the second spring (35) is embedded in the through groove (36), the connecting plate (34) is fixedly connected to the side end of the second spring (35), the control block (31) is fixedly connected to the outer surface of the connecting plate (34), and the locking block (33) is set on the side of the control block (31).
6. A heat insulation bushing for an automotive engine according to claim 5, characterized in that, The card block (33) and the mounting groove (32) are connected by a snap-fit structure, and the fixing seat (22) and the heat insulation bushing body (11) are connected by a split-type structure.
7. A heat insulation bushing for an automotive engine according to claim 5, characterized in that, The outer surface of the card block (33) has a beveled structure, and the end of the card block (33) is tangent to the port of the mounting groove (32).