Automobile, waist pretensioner and exhaust pipe protection structure of waist pretensioner
By installing a combined structure of a water-proof protective cover and elastic pads on the outside of the exhaust pipe of the preload generator, the problems of exhaust pipe coating damage and rust are solved, and effective protection of the exhaust pipe is achieved to ensure its normal operation.
Patent Information
- Application Number
- CN202422585755.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-10-25
AI Technical Summary
In the prior art, the exhaust pipe coating of the preload generator is at risk of being damaged and rusted, which affects its normal operation.
A combined structure of a water-proof protective cover and an elastic pad is adopted. The water-proof protective cover is arranged on the outside of the exhaust pipe, and the elastic pad is fixedly connected between the water-proof protective cover and the exhaust pipe to achieve elastic contact, isolate sharp objects and wet objects, reduce friction, and isolate moisture falling from the carpet through the water-proof protective piece.
Effectively protect the exhaust pipe, reduce the risk of coating damage and rust, and ensure the normal operation of the preload generator.
Smart Images
Figure CN223374495U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobiles, in particular to an automobile, a waist pretensioner and an exhaust pipe protection structure thereof. Background Art
[0002] The car's lap pretensioner is a safety device that can be activated when the vehicle detects a collision signal. The ignition agent and propellant in the pretensioner generator of the lap pretensioner burn to produce gas. These gases expand rapidly, pushing the piston to move, driving the shaft of the seat belt retractor to rotate, achieving rapid tightening of the seat belt and quickly pulling the lap seat belt, tightening the lap belt and shoulder belt at the same time, reducing the gap between the occupant's chest, waist and the webbing, thereby reducing the forward movement of the chest and waist, limiting the movement of the occupant in the car, and effectively preventing the occupant from being thrown out of the seat during a collision, thereby reducing the risk of injury and increasing the safety of the occupant.
[0003] However, the exhaust pipe of the preload generator is installed under the car interior carpet and is inevitably subject to friction, which poses a risk of damage to the coating of the exhaust pipe of the preload generator and rust to the exhaust pipe, thereby affecting the normal operation of the preload generator.
[0004] Therefore, how to improve the protection of the exhaust pipe of the preload generator becomes a technical problem that needs to be solved by those skilled in the art. Utility Model Content
[0005] The utility model provides an automobile, a waist pretensioner and an exhaust pipe protection structure thereof, which are used to solve the problems in the prior art of the risk of damage to the coating of the exhaust pipe of the pretensioner generator and the risk of rust on the exhaust pipe.
[0006] In order to solve the above problems, the present invention provides an exhaust pipe protection structure, comprising:
[0007] A water-proof protective cover, suitable for covering the outside of the exhaust pipe;
[0008] The elastic pad is suitable for being fixedly connected to the inner wall of the water-proof protective cover and the outer wall of the exhaust pipe, and is suitable for fitting at least with the outer wall of the stress-bearing side of the exhaust pipe.
[0009] According to one embodiment of the present invention, the waterproof protective cover includes:
[0010] a first cover plate, adapted to be fixedly connected to the elastic pad;
[0011] a second cover plate, fixedly connected to a first side edge of the first cover plate;
[0012] The third cover plate is fixedly connected to the second side of the first cover plate, and is located on the same side of the first cover plate as the second cover plate. The distance between the two is greater than the diameter of the exhaust pipe, and the first side is opposite to the second side.
[0013] According to one embodiment of the present invention, the width of the second cover plate and the third cover plate in a direction perpendicular to the extension plane of the first cover plate is greater than or equal to the radius of the exhaust pipe.
[0014] According to one embodiment of the present invention, the width of the cover plate is equal to the sum of the minimum thickness of the elastic pad in a direction perpendicular to the extension plane of the first cover plate and the diameter of the exhaust pipe.
[0015] According to one embodiment of the present invention, the second cover plate includes:
[0016] a planar portion fixedly connected to the first side of the first cover plate;
[0017] The reinforcing portion is fixedly connected to a side of the planar portion away from the first cover plate, and the cross-section of the reinforcing portion is in the shape of a hollow triangle.
[0018] According to one embodiment of the present invention, the waterproof protective cover includes a "U"-shaped waterproof protective cover.
[0019] According to an embodiment of the present invention, the elastic pad is bonded to the inner wall of the waterproof protective cover and the outer wall of the exhaust pipe.
[0020] According to an embodiment of the present invention, the elastic pad includes a first elastic pad and a second elastic pad, which are respectively fixed to both ends of the waterproof protective cover in the length direction.
[0021] In order to solve the aforementioned problems, the present invention further provides a lumbar pretensioner, comprising: an exhaust pipe protection structure as described in any one of the aforementioned items.
[0022] In order to solve the aforementioned problem, the present invention further provides an automobile, comprising the aforementioned lumbar pretensioner.
[0023] The present invention provides an automobile, a lumbar pretensioner, and an exhaust pipe protection structure thereof, wherein the exhaust pipe protection structure includes a water-blocking protective cover and an elastic pad. When the exhaust pipe protection structure is installed, the water-blocking protective cover is positioned outside the exhaust pipe, and the elastic pad is fixedly connected to the inner side wall of the water-blocking protective cover and the outer side wall of the exhaust pipe, and is in contact with at least the outer side wall of the exhaust pipe on the stress-bearing side. When installing the exhaust pipe protection structure, the elastic pad is first fixed to the inner side wall of the water-blocking protective cover, and then the water-blocking protective cover is positioned outside the exhaust pipe, and a force is applied to make the elastic pad in contact with the outer side wall of the exhaust pipe on the stress-bearing side, and the elastic pad is fixed to the outer side wall of the exhaust pipe. It can be seen that the exhaust pipe protection structure provided in the embodiment of the present application is connected to the exhaust pipe through its elastic pad, so that when the force-bearing side of the water-proof protective cover covering the outside of the exhaust pipe is subjected to force, it elastically contacts the exhaust pipe, which can not only separate other objects such as sharp objects and wet objects from the exhaust pipe and prevent other objects from rubbing against the exhaust pipe, but also the elastic pad is fixedly connected to the exhaust pipe, and even if relative movement occurs, the relative movement is very small, thereby reducing friction and reducing the risk of damage to the coating of the exhaust pipe; and through the water-proof protective part, it can also isolate water falling from the carpet to a certain extent, further protect the exhaust pipe, and reduce the risk of rusting of the exhaust pipe.
[0024] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0026] Figure 1 It is a structural schematic diagram of the exhaust pipe protection structure provided by the utility model.
[0027] Figure 2 It is a bottom view of the exhaust pipe protection structure provided by the utility model.
[0028] Figure 3 It is a structural schematic diagram of the waist pretensioner provided by the utility model.
[0029] Reference numerals:
[0030] 1. Waterproof protective cover; 11. First cover plate; 12. Second cover plate; 121. Flat surface; 122. Reinforced portion; 13. Third cover plate; 2. Elastic pad; 3. Exhaust pipe; 4. Waist pretensioner. DETAILED DESCRIPTION
[0031] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0032] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.
[0033] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.
[0034] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.
[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.
[0036] The following combination Figure 1-Figure 3 The automobile, the lumbar pretensioner and the exhaust pipe protection structure thereof according to the embodiments of the present utility model are described.
[0037] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic structural diagram of the exhaust pipe protection structure provided by the present utility model; Figure 2 It is a bottom view of the exhaust pipe protection structure provided by the utility model.
[0038] For the convenience of description, this application first introduces the exhaust pipe protection structure provided by the embodiment of this application, such as Figure 1 and Figure 2 As shown, the exhaust pipe protection structure provided in the embodiment of the present application includes a water-proof protective cover 1 and an elastic pad 2, wherein the water-proof protective cover 1 is suitable for covering the exhaust pipe 3 (shown in Figure 3 elastic pad 2, adapted to be fixedly connected to the inner wall of the waterproof protective cover 1 and the outer wall of the exhaust pipe 3, and adapted to fit at least the outer wall of the exhaust pipe 3 on the force-bearing side.
[0039] It is easy to understand that the water-proof protective cover 1 described herein is suitable for covering the outside of the exhaust pipe 3, which means that when the exhaust pipe protection structure provided by the embodiment of the present application is installed in a car, the water-proof protective cover 1 is covered on the outside of the exhaust pipe 3, but before installation, the water-proof protective cover 1 can be placed in any position without restriction; similarly, the elastic pad 2 described herein is suitable for being fixedly connected to the inner wall of the water-proof protective cover 1 and the outer wall of the exhaust pipe 3, and is suitable for fitting with at least the outer wall of the stress-bearing side of the exhaust pipe 3, which also means that when the exhaust pipe protection structure provided by the embodiment of the present application is installed in a car, the position and connection relationship of the elastic pad 2, the stress-bearing side of the exhaust pipe refers to the side located above when the exhaust pipe is installed on the car chassis, and at least fitting with the outer wall of the stress-bearing side of the exhaust pipe means that the elastic pad 2 is at least located Figure 1The position described in the above-mentioned embodiment can also be fitted with the outer side wall of other parts of the exhaust pipe.
[0040] It should be noted that the "waterproof protective cover" mentioned in this article refers to a protective cover that has a water-proof function compared to the car's interior carpet, etc., and can prevent water falling from the car's interior carpet from directly falling into the exhaust pipe.
[0041] Of course, in some embodiments, the material of the waterproof protective cover 1 can be plastic, such as: PP+EPDM-TD20 (this is a composite material composed of polypropylene (PP) and ethylene propylene diene monomer (EPDM), in which 20% talcum powder is added as a filler.), which can not only meet the waterproofing needs, but also make the waterproof protective cover 1 have high toughness, good impact resistance, heat resistance and cold resistance.
[0042] Furthermore, the "elastic pad" described in this article refers to a pad made of a more elastic material than the waterproof protective cover and the exhaust pipe, thereby reducing wear on the exhaust pipe.
[0043] Specifically, the hardness range of the elastic pad 2 can be: Shore A 40-50, so as to meet the functional requirements of the elastic pad.
[0044] To facilitate the fixation of the elastic pad 2 , in a specific embodiment, the elastic pad 2 can be bonded to the inner wall of the waterproof protective cover 1 and the outer wall of the exhaust pipe 3 .
[0045] To ensure the reliability of fixation, 3M glue can be used for fixation.
[0046] In order to reduce the difficulty of installing the elastic pad 2 and ensure the installation reliability of the elastic pad 2, in a specific embodiment, the elastic pad 2 may include a first elastic pad 21 and a second elastic pad 22, which are respectively fixed at both ends of the length direction of the waterproof protective cover 1.
[0047] Specifically, the minimum distance between the first elastic pad 21 and the end of the waterproof protective cover 1 in the length direction, and the minimum distance between the second elastic pad 22 and the end of the waterproof protective cover 1 in the length direction can both be 3.5 mm.
[0048] Of course, the elastic pad 2 can also be in the shape of an elongated strip to increase the bonding area.
[0049] like Figure 2As shown in the figure, the surface where the elastic pad 2 contacts the exhaust pipe 3 can be a plane, and the elastic pad 2 can be fitted with the force-bearing side of the exhaust pipe 3 by pressing to reduce processing costs; in another specific embodiment, the surface where the elastic pad 2 contacts the exhaust pipe 3 can also be a curved surface, for example: a surface that matches the force-bearing side surface of the exhaust pipe 3, so that surface fitting can be achieved more easily.
[0050] When installing the exhaust pipe protection structure, the elastic pad 2 can be first fixed to the inner wall of the water-proof protective cover 1, and then the water-proof protective cover 1 can be placed on the outside of the exhaust pipe 3, and a force can be applied to make the elastic pad 2 fit with the outer wall of the force-bearing side of the exhaust pipe 3, and fix it to the outer wall of the exhaust pipe 3.
[0051] It can be seen that the exhaust pipe protection structure provided in the embodiment of the present application is connected to the exhaust pipe through its elastic pad, so that when the force-bearing side of the water-proof protective cover covering the outside of the exhaust pipe is subjected to force, it elastically contacts the exhaust pipe, which can not only separate other objects such as sharp objects and wet objects from the exhaust pipe and prevent other objects from rubbing against the exhaust pipe, but also the elastic pad is fixedly connected to the exhaust pipe, and even if relative movement occurs, the relative movement is very small, thereby reducing friction and reducing the risk of damage to the coating of the exhaust pipe; and through the water-proof protective part, it can also isolate water falling from the carpet to a certain extent, further protect the exhaust pipe, and reduce the risk of rusting of the exhaust pipe.
[0052] In a specific embodiment, Figure 1 As shown, in order to facilitate the installation of the waterproof protective cover 1, the waterproof protective cover 1 may include a first cover plate 11, a second cover plate 12 and a third cover plate 13, wherein the first cover plate 11 is suitable for fixedly connecting the elastic pad 2, the second cover plate is fixedly connected to the first side of the first cover plate 11, the third cover plate 13 is fixedly connected to the second side of the first cover plate 11, and both the third cover plate 13 and the second cover plate 12 are located on the same side of the first cover plate 11, the distance between the two is greater than the diameter of the exhaust pipe 3, and the first side is opposite to the second side.
[0053] It is easy to understand that the third cover plate 13 and the second cover plate 12 are both located on the same side of the first cover plate 11, which means that both are located on the same side of the plane where the first cover plate 11 is located. Figure 1 In the structure shown in , the first side and the second side are opposite to each other, which means that the two are not adjacent; the distance between the second cover plate 12 and the third cover plate 13 is greater than the diameter of the exhaust pipe 3, which means that on a plane parallel to the first cover plate 11, the distance between the second cover plate 12 and the third cover plate 13 is greater than the diameter of the exhaust pipe 3.
[0054] In one embodiment, the waterproof protective cover 1 may include a "U"-shaped waterproof protective cover, i.e., the planes on which the second cover plate 12 and the third cover plate 13 are located are perpendicular to the plane on which the first cover plate 11 is located, thereby reducing the space required for installation. In other embodiments, the angles between the planes on which the second cover plate 12 and the third cover plate 13 are located, respectively, and the plane on which the first cover plate 11 is located can be acute or obtuse, and the two angles can be the same or different.
[0055] Furthermore, in order to reduce stress concentration, the connecting edge between the second cover plate 12 and the first cover plate 11 , and the connecting edge between the third cover plate 13 and the first cover plate 11 may form a transition fillet.
[0056] In this way, since the distance between the second cover plate 12 and the third cover plate 13 is greater than the diameter of the exhaust pipe 3, the exhaust pipe 3 can be conveniently covered inside the waterproof protective cover 1, and the structural arrangement of the first cover plate 11, the second cover plate 12 and the third cover plate 13 can also reduce the processing difficulty of the waterproof protective cover 1.
[0057] Furthermore, in order to improve the protective effect of the exhaust pipe protection structure provided in the embodiments of the present application, in some embodiments, the cover plate width of the second cover plate 12 and the third cover plate 13 in the direction perpendicular to the extension plane of the first cover plate 11 is greater than or equal to the radius of the exhaust pipe 3.
[0058] In this way, the exhaust pipe protection structure can cover most of the exhaust pipe 3, thereby improving the protection effect.
[0059] In a specific embodiment, the width of the cover plate may be equal to the sum of the minimum thickness of the elastic pad 2 in a direction perpendicular to the extension plane of the first cover plate 11 and the diameter of the exhaust pipe 3 .
[0060] Therefore, during installation, the second cover plate 12 and the third cover plate can be directly supported on the mounting plate ribs of the exhaust pipe 3 to assist in bearing the force acting on the exhaust pipe, reduce the pressure on the exhaust pipe 3, and further improve the protection effect.
[0061] In order to improve the strength of the second cover plate 12, please refer to Figure 1 , the second cover plate 12 includes:
[0062] The plane portion 122 is fixedly connected to the first side of the first cover plate 11;
[0063] The reinforcement portion 121 is fixedly connected to a side of the planar portion away from the first cover plate 11 . The cross section of the reinforcement portion 121 is in the shape of a hollow triangle.
[0064] The hollow triangular structure can increase the load-bearing force, thereby improving the reliability of the second cover plate 12.
[0065] It is easy to understand that the third cover plate 13 may also have the same structure as the second cover plate 12 .
[0066] Furthermore, in order to facilitate the connection of the exhaust pipe protection structure provided in the present application, the third cover plate 13 may also have a connecting bend portion as shown in the figure.
[0067] To solve the above problems, please refer to Figure 3 , Figure 3 Schematic diagram of the structure of the lumbar pretensioner provided by the present invention. In another embodiment, the present application further provides a lumbar pretensioner, comprising the exhaust pipe protection structure of any of the aforementioned embodiments.
[0068] The lumbar pretensioner provided in the embodiment of the present application has an exhaust pipe protection structure that is connected to the exhaust pipe through an elastic pad. When the force-bearing side of the water-proof protective cover covering the outside of the exhaust pipe is subjected to a force, it elastically contacts the exhaust pipe, which not only separates other objects such as sharp objects and wet objects from the exhaust pipe and prevents other objects from rubbing against the exhaust pipe, but also the elastic pad is fixedly connected to the exhaust pipe. Even if relative movement occurs, the relative movement is very small, thereby reducing friction and lowering the risk of damage to the exhaust pipe coating. The water-proof protective piece can also isolate moisture falling from the carpet to a certain extent, further protecting the exhaust pipe and reducing the risk of rusting the exhaust pipe.
[0069] In order to solve the aforementioned problems, an embodiment of the present application further provides an automobile, comprising the lumbar pretensioner provided by any of the aforementioned embodiments.
[0070] The automobile provided in the embodiment of the present application has an exhaust pipe protection structure whose connection with the exhaust pipe is achieved through an elastic pad. Therefore, when the force-bearing side of the water-proof protective cover covering the outside of the exhaust pipe is subjected to a force, it elastically contacts the exhaust pipe, which not only separates other objects such as sharp objects and wet objects from the exhaust pipe and prevents other objects from rubbing against the exhaust pipe, but also the elastic pad is fixedly connected to the exhaust pipe. Even if relative movement occurs, the relative movement is very small, thereby reducing friction and lowering the risk of damage to the exhaust pipe coating. Moreover, the water-proof protective piece can also isolate moisture falling from the carpet to a certain extent, further protecting the exhaust pipe and reducing the risk of rusting of the exhaust pipe.
[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.
Claims
1. An exhaust pipe protection structure, characterized in that: include: A water-proof protective cover, suitable for covering the outside of the exhaust pipe; The elastic pad is suitable for being fixedly connected to the inner wall of the water-proof protective cover and the outer wall of the exhaust pipe, and is suitable for fitting at least with the outer wall of the stress-bearing side of the exhaust pipe.
2. The exhaust pipe protection structure according to claim 1, characterized in that: The waterproof protective cover comprises: a first cover plate, adapted to be fixedly connected to the elastic pad; a second cover plate, fixedly connected to a first side edge of the first cover plate; The third cover plate is fixedly connected to the second side of the first cover plate, and is located on the same side of the first cover plate as the second cover plate. The distance between the two is greater than the diameter of the exhaust pipe, and the first side is opposite to the second side.
3. The exhaust pipe protection structure according to claim 2, characterized in that: The cover plate widths of the second cover plate and the third cover plate in a direction perpendicular to the extension plane of the first cover plate are greater than or equal to the radius of the exhaust pipe.
4. The exhaust pipe protection structure according to claim 3, characterized in that: The width of the cover plate is equal to the sum of the minimum thickness of the elastic pad in a direction perpendicular to the extension plane of the first cover plate and the diameter of the exhaust pipe.
5. The exhaust pipe protection structure according to claim 2, wherein: The second cover plate includes: a planar portion fixedly connected to the first side of the first cover plate; The reinforcing portion is fixedly connected to a side of the planar portion away from the first cover plate, and the cross-section of the reinforcing portion is in the shape of a hollow triangle.
6. The exhaust pipe protection structure according to claim 2, wherein: The waterproof protective cover includes a "U"-shaped waterproof protective cover.
7. The exhaust pipe protection structure according to any one of claims 1 to 6, characterized in that: The elastic pad is bonded to the inner wall of the water-proof protective cover and the outer wall of the exhaust pipe.
8. The exhaust pipe protection structure according to any one of claims 1 to 6, characterized in that: The elastic pad includes a first elastic pad and a second elastic pad, which are respectively fixed at two ends of the waterproof protective cover in the length direction.
9. A waist pretensioner, characterized in that: include: The exhaust pipe protection structure according to any one of claims 1 to 8.
10. An automobile, characterized in that: Comprising the lumbar pretensioner of claim 9.