Novel three-way catalyst heat insulation mechanism

Abstract

The utility model discloses a novel three-way catalytic converter heat insulation mechanism, which relates to the technical field of three-way catalytic converter heat insulation and comprises a heat insulation component and a mounting component, and the mounting component is used for mounting and fixing the heat insulation component at a concave part of an undercarriage; the mounting assembly comprises a mounting unit and a reinforcing unit; the mounting unit is used for achieving preliminary fixation of the heat insulation assembly and the undercarriage concave part. The reinforcing unit is used for further reinforcing the heat insulation assembly and the undercarriage concave part, and the heat insulation assembly is prevented from loosening and falling through cooperation of the mounting unit and the reinforcing unit. According to the utility model, through the arrangement of the mounting assembly, the threaded connection of the screw cylinder and the mounting screw hole, and the deformation of the C-shaped elastic sheet and the compression on the upper surface of the concave part of the undercarriage, dual connection and fixation are realized, and compared with a traditional bolt tightening mounting structure, the mounting connection strength of the heat insulation assembly is further improved; and the heat insulation assembly 1 can be effectively prevented from loosening and falling off.

Description

TECHNICAL FIELD

[0001] The utility model relates to three -way catalyst heat insulation technical field, specifically a new -type three -way catalyst heat insulation mechanism. BACKGROUND

[0002] Three -way catalyst is the most important machine -out purification device installed in the automobile exhaust system, it can be harmful gas such as CO, HC and NOx of automobile exhaust through oxidation and reduction effect change into harmless carbon dioxide, water and nitrogen;

[0003] Three -way catalyst works inside temperature can reach 400 °C~800 °C (even higher), high temperature can influence surrounding components (such as car body sheet metal, wire harness, oil tank, interior decoration etc.) through radiation and conduction, therefore, the car body will be installed around three -way catalyst heat insulation plate to carry out heat insulation operation between three -way catalyst and surrounding components.

[0004] In the existing automobile structure layout, one kind of layout is to arrange three -way catalyst in the automobile disc bottom, and the automobile disc bottom is formed with the concave region for accommodating three -way catalyst, in order to avoid the high temperature of three -way catalyst to influence the car body component, an arc heat insulation plate is installed in the concave region, the arc heat insulation plate is located above three -way catalyst, and good heat insulation effect can be realized, but the arc heat insulation plate still has the following problems in use:

[0005] The connection of arc heat insulation plate and automobile disc is through bolt fixing, and in the automobile driving process, the fixing bolt can be loose due to vibration, so that the heat insulation plate is displaced or falls off, and even other components are damaged;

[0006] Therefore, in order to avoid the above situation, a new type of three -way catalyst heat insulation mechanism is provided. INVENTION CONTENTS

[0007] The utility model aims at: in order to solve the problem in the above background, provide a new type of three -way catalyst heat insulation mechanism.

[0008] In order to achieve the above object, the utility model provides the following technical scheme: a new type of three -way catalyst heat insulation mechanism, including the heat insulation assembly of the arc heat insulation plate and the connecting side plate, the connecting side plate is fixed to the bottom side surface of the arc heat insulation plate, the connecting side plate is equipped with the mounting assembly on the round hole of sleeve connection, the mounting assembly is used to realize the mounting and fixed of heat insulation assembly at the position of disc concave part;

[0009] The mounting assembly includes mounting unit, reinforcing unit;

[0010] The mounting unit is used to realize the preliminary fixation of heat insulation assembly and disc concave part;

[0011] The reinforcing unit is used for further reinforcing between the heat insulation assembly and the concave part of the vehicle disc, and the mounting unit cooperates with the reinforcing unit to avoid the heat insulation assembly from loosening and falling.

[0012] As a further scheme of the utility model: the mounting unit includes a bottom column, a screw cylinder, an annular groove and a polygonal notch;

[0013] The screw cylinder is fixed on the top of the bottom column, and the polygonal notch is arranged on the bottom of the bottom column;

[0014] The annular groove is formed on the outer side of the bottom end of the screw cylinder, the screw cylinder is connected to the inner side of the sleeve hole through the annular groove, the bottom column is arranged on the bottom of the connecting side plate, and the screw cylinder protrudes above the connecting side plate;

[0015] The mounting screw hole is arranged on the concave part of the vehicle disc, the screw cylinder is aligned with the mounting screw hole and screwed, and the preliminary fixation of the heat insulation assembly and the concave part of the vehicle disc is realized.

[0016] As a further scheme of the utility model: the reinforcing unit includes a notch groove, a C-shaped elastic sheet, a top plate, a stud, a Chinese character-shaped through hole and a convex cylindrical column;

[0017] The notch groove is arranged on the top of the screw cylinder, the bottom end of the C-shaped elastic sheet is fixedly connected with the inner wall bottom of the notch groove, the top end of the C-shaped elastic sheet extends and protrudes above the screw cylinder and is fixedly connected with the top plate, and the stud is fixedly connected with the bottom end of the top plate and extends into the screw cylinder;

[0018] The Chinese character-shaped through hole is arranged on the inner wall top of the polygonal notch and completely penetrates the bottom column and the inner cavity of the screw cylinder;

[0019] The convex cylindrical column is movably connected to the inner side of the Chinese character-shaped through hole and extends into the screw cylinder, and the convex cylindrical column is screw-connected to the outer side of the stud;

[0020] When the screw cylinder is screw-connected with the mounting screw hole and is screwed, the notch groove is arranged above the concave part of the vehicle disc, the stud and the top plate are moved downward by rotating the convex cylindrical column, the notch groove is bent and tightly combined with the upper surface of the concave part of the vehicle disc, and the connection and reinforcement of the heat insulation assembly and the concave part of the vehicle disc are realized.

[0021] As a further scheme of the utility model: the notch groove and the C-shaped elastic sheet are arranged in multiple groups around the center of the screw cylinder, the middle part of the convex cylindrical column is formed with an expansion screw hole, and the stud extends into the expansion screw hole and is screw-connected with the expansion screw hole.

[0022] As a further scheme of the utility model: the height of the telescopic screw hole is greater than the height of the stud, and the height of the large-diameter circular groove of the middle-shaped through hole is greater than the height of the large-diameter part of the convex cylindrical bottom.

[0023] As a further scheme of the utility model: the height from the top of the annular groove to the inner wall bottom of the notched groove matches the height of the mounting screw hole.

[0024] Compared with the prior art, the utility model has the beneficial effects that:

[0025] Through the setting of the mounting assembly, the screw cylinder is connected with the mounting screw hole through the thread, and the C-shaped elastic sheet is deformed and pressed on the upper surface of the concave part of the disc, so that double connection and fixation are realized. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural schematic view of the utility model;

[0027] Figure 2 It is a split schematic view of the heat insulation assembly and the concave part of the disc of the utility model;

[0028] Figure 3 It is a split sectional view of the mounting assembly and the heat insulation assembly of the utility model;

[0029] Figure 4 It is a structural sectional view of the mounting assembly of the utility model.

[0030] In the drawing: 1, heat insulation assembly; 101, arc heat insulation plate; 102, connecting side plate; 103, sleeving circular hole; 2, mounting assembly; 201, bottom column; 202, screw cylinder; 203, annular groove; 204, notched groove; 205, C-shaped elastic sheet; 206, top plate; 207, stud; 208, polygonal notch; 209, middle-shaped through hole; 210, convex cylinder; 211, telescopic screw hole; 3, concave part of disc; 4, mounting screw hole. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0032] Please refer to Figures 1 to 4The utility model discloses an embodiment of a novel three -way catalytic converter heat insulation mechanism, including the heat insulation subassembly 1 that is composed of the radian heat insulation board 101, the connecting side board 102, the connecting side board 102 is fixed in the bottom side of radian heat insulation board 101, is equipped with the sleeve joint round hole 103 on connecting side board 102, and connecting side board 102 is installed with installation component 2 through sleeve joint round hole 103, and installation component 2 is used for realizing the installation fixed of heat insulation subassembly 1 at the position of car disc concave type department 3,

[0033] Installation component 2 includes installation unit, reinforcing unit, and installation unit is used for realizing the preliminary fixed of heat insulation subassembly 1 with car disc concave type department 3, and reinforcing unit is used for further reinforcing between heat insulation subassembly 1 and car disc concave type department 3, and through installation unit and reinforcing unit cooperation is used for avoiding the loosening, falling condition of heat insulation subassembly 1,

[0034] Installation unit includes bottom column 201, screw cylinder 202, annular groove 203, polygonal slot 208,

[0035] Screw cylinder 202 is fixed on the top of bottom column 201, and polygonal slot 208 is set on the bottom of bottom column 201,

[0036] Annular groove 203 is formed on the bottom end outside of screw cylinder 202, and screw cylinder 202 is rotationally connected to the inside of sleeve joint round hole 103 through annular groove 203, bottom column 201 is distributed on the bottom of connecting side board 102, and screw cylinder 202 protrudes above connecting side board 102,

[0037] Mounting screw hole 4 for the threaded connection of screw cylinder 202 is set on car disc concave type department 3, and the preliminary fixed of heat insulation subassembly 1 and car disc concave type department 3 is realized by screw cylinder 202 aligning mounting screw hole 4 and tightening,

[0038] Reinforcing unit includes notch groove 204, C type elastic sheet 205, top plate 206, stud 207, Chinese character type through -hole 209, convex cylindrical column 210,

[0039] Notch groove 204 is set on the top of screw cylinder 202, the bottom end of C type elastic sheet 205 is fixedly connected with the inner wall bottom of notch groove 204, the top end of C type elastic sheet 205 extends and protrudes to the above of screw cylinder 202 and is fixedly connected with top plate 206, and stud 207 is fixed to the bottom end middle part of top plate 206 and extends to the inside of screw cylinder 202,

[0040] Chinese character type through -hole 209 is set on the inner wall top of polygonal slot 208 and is completely communicated with the inner cavity of bottom column 201 and screw cylinder 202,

[0041] Convex cylindrical column 210 is movably connected to the inside of Chinese character type through -hole 209 and extends to the inside of screw cylinder 202, and convex cylindrical column 210 is screw connected to the outside of stud 207,

[0042] When the screw cylinder 202 is screwed with the mounting screw hole 4, the notched groove 204 is distributed above the concave portion 3 of the vehicle disc, and the convex cylinder 210 is twisted to make the screw post 207 and the top plate 206 move downward as a whole, so as to realize the bending of the notched groove 204 and the close contact with the upper surface of the concave portion 3 of the vehicle disc, so as to realize the connection and reinforcement of the heat insulation assembly 1 and the concave portion 3 of the vehicle disc.

[0043] The notched groove 204 and the C-shaped elastic sheet 205 are arranged in multiple groups in a ring shape with the center of the screw cylinder 202 as the center, and the middle part of the convex cylinder 210 is formed with an expansion screw hole 211, and the screw post 207 extends into the expansion screw hole 211 and is screwed with the expansion screw hole 211.

[0044] The height from the top of the annular groove 203 to the bottom of the inner wall of the notched groove 204 matches the height of the mounting screw hole 4.

[0045] In the embodiment, it should be noted that the heat insulation assembly 1 is already installed with the installation assembly 2 when it is shipped out of the factory.

[0046] When the heat insulation assembly 1 is installed, the operation method is as follows:

[0047] The heat insulation assembly 1 is placed inside the concave portion 3 of the vehicle disc, and the connecting side plate 102 is located below the concave portion 3 of the vehicle disc, then the installation assembly 2 is aligned with the corresponding mounting screw hole 4, and the heat insulation assembly 1 is pushed upward so that the top plate 206 on the installation assembly 2 enters the inside of the mounting screw hole 4.

[0048] Then, a tool is inserted into the polygonal notch 208 and twisted and pressed upward, so that the screw cylinder 202 is screwed with the mounting screw hole 4 and tightened, finally, the notched groove 204 and the C-shaped elastic sheet 205 on the screw cylinder 202 are located above the concave portion 3 of the vehicle disc, at this time, the upper surface of the connecting side plate 102 is closely attached to the lower surface of the concave portion 3 of the vehicle disc, thereby realizing the preliminary installation and fixation of the heat insulation assembly 1.

[0049] Then, a tool of a smaller size is inserted into the polygonal groove at the bottom of the convex cylinder 210 (the polygonal groove is shown in Figure 4 ), and is twisted, the rotation of the convex cylinder 210 can make the screw post 207 move downward and shrink into the expansion screw hole 211, the screw post 207 pulls the top plate 206 downward, the downward moving top plate 206 extrudes and bends the C-shaped elastic sheet 206, and the lower half of the C-shaped elastic sheet 206 is bent and attached to the upper surface of the concave portion 3 of the vehicle disc, so as to realize the connection and reinforcement between the screw cylinder 202 and the concave portion 3 of the vehicle disc, and it should be noted that the rotation direction of the convex cylinder 210 when the screw post 207 is shrunk downward is opposite to the tightening direction of the screw cylinder 202, so the loosening direction of the two is also opposite, and through this structure, the anti-loosening function can be further improved.

[0050] Through cooperation of the above multiple parts, compared with a traditional bolt tightening installation structure, the installation connection strength of the heat insulation assembly 1 is further improved, and the heat insulation assembly 1 can be effectively prevented from loosening and falling off.

[0051] It should be further noted that the shape of the concave part 3 of the different vehicle models is set according to the specific layout requirements, and the shape of the arc-shaped heat insulation plate 101 matches the shape of the concave part 3 of the vehicle disc, and the number and position of the connecting side plates 102 are also set according to the specific layout of the mounting screw holes 4 on the concave part 3 of the vehicle disc, and the structure and function of the mounting assembly 2 are suitable for the installation of heat insulation assemblies 1 of different shapes.

[0052] Please refer to Figure 4 The height of the telescopic screw hole 211 is greater than the height of the stud 207, and the height of the large-diameter circular groove of the middle-shaped through hole 209 is greater than the height of the large-diameter part at the bottom of the convex cylinder 210.

[0053] In the embodiment, the height of the telescopic screw hole 211 is greater than the height of the stud 207, which provides sufficient accommodation space for the stud 207.

[0054] Through the structure that the height of the large-diameter circular groove of the middle-shaped through hole 209 is greater than the height of the large-diameter part at the bottom of the convex cylinder 210, the convex cylinder 210 has an upward space inside the middle-shaped through hole 209 in the initial state of the mounting assembly 2 (i.e., the C-shaped spring 205 is not deformed), so that when the C-shaped spring 205 is pressed into the mounting screw hole 4 during the threaded connection and tightening of the mounting assembly 2 and the mounting screw hole 4, the C-shaped spring 205 can be deformed and push the top plate 206 upward, and the convex cylinder 210 moves upward synchronously, which ensures smooth deformation of the C-shaped spring 205 and does not block the tightening of the screw cylinder 202.

[0055] It should be further noted that the outer diameter of the top plate 206 is slightly smaller than the outer diameter of the screw cylinder 202 and greater than the inner diameter of the hollow cavity of the screw cylinder 202, so that the downward position of the top plate 206 can be limited, and the C-shaped spring 205 cannot be reset to the initial state due to excessive deformation during disassembly.

[0056] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art can make equivalent substitutions or changes according to the technical scheme and concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A novel thermal insulation mechanism for a three-way catalyst, comprising a thermal insulation assembly (1) composed of an arc-shaped thermal insulation plate (101) and a connecting side plate (102) fixed to the bottom side of the arc-shaped thermal insulation plate (101), characterized in that, The connecting side plate (102) is provided with a sleeving circular hole (103), and the connecting side plate (102) is provided with a mounting assembly (2) through the sleeving circular hole (103), which is used for mounting and fixing the heat insulation assembly (1) at the position of the concave part (3) of the vehicle disc; The mounting assembly (2) comprises a mounting unit and a reinforcing unit; The mounting unit is used for preliminarily fixing the heat insulation assembly (1) to the concave part (3) of the vehicle disc; The reinforcing unit is used for further reinforcing the heat insulation assembly (1) and the concave part (3) of the vehicle disc, and the mounting unit and the reinforcing unit are used for avoiding loosening and falling of the heat insulation assembly (1).

2. The novel thermal insulation mechanism for a three-way catalyst according to claim 1, characterized by, The mounting unit comprises a bottom column (201), a screw cylinder (202), an annular groove (203) and a polygonal slot (208). The screw cylinder (202) is fixed to the top of the bottom column (201), and the polygonal slot (208) is arranged at the bottom of the bottom column (201). The annular groove (203) is formed at the bottom end of the outer side of the screw cylinder (202), the screw cylinder (202) is rotationally connected to the inner side of the sleeving circular hole (103) through the annular groove (203), the bottom column (201) is arranged at the bottom of the connecting side plate (102), and the screw cylinder (202) protrudes above the connecting side plate (102). The concave part (3) of the vehicle disc is provided with a mounting screw hole (4) for threadedly connecting the screw cylinder (202), and the screw cylinder (202) is aligned with the mounting screw hole (4) and is screwed to preliminarily fix the heat insulation assembly (1) to the concave part (3) of the vehicle disc.

3. The novel thermal insulation mechanism for a three-way catalyst according to claim 2, characterized by, The reinforcing unit comprises a notch groove (204), a C-shaped elastic sheet (205), a top plate (206), a stud (207), a Chinese character-shaped through hole (209) and a convex cylinder (210). The notch groove (204) is arranged at the top of the screw cylinder (202), the bottom end of the C-shaped elastic sheet (205) is fixedly connected to the inner wall of the bottom of the notch groove (204), the top end of the C-shaped elastic sheet (205) extends and protrudes above the screw cylinder (202) and is fixedly connected to the top plate (206), and the stud (207) is fixed to the bottom end of the middle part of the top plate (206) and extends into the screw cylinder (202). The Chinese character-shaped through hole (209) is arranged at the inner wall of the top of the polygonal slot (208) and completely penetrates the bottom column (201) and the inner cavity of the screw cylinder (202) to communicate. The convex cylinder (210) is movably connected to the inner side of the Chinese character-shaped through hole (209) and extends into the screw cylinder (202), and the convex cylinder (210) is threadedly connected to the outer side of the stud (207). When the screw cylinder (202) is threadedly connected with the mounting screw hole (4) and is screwed, the notch groove (204) is arranged above the concave part (3) of the vehicle disc, the convex cylinder (210) is twisted to move the stud (207) and the top plate (206) downward as a whole, so that the notch groove (204) is bent and closely contacts the upper surface of the concave part (3) of the vehicle disc, thereby achieving the connection and reinforcement of the heat insulation assembly (1) and the concave part (3) of the vehicle disc.

4. The novel thermal insulation mechanism for a three-way catalyst according to claim 3, characterized by, The notch groove (204) and the C-shaped elastic sheet (205) are arranged in multiple groups in a ring shape with the screw cylinder (202) as the center, the middle part of the convex cylinder (210) is formed with an expansion screw hole (211), the screw post (207) extends to the inside of the expansion screw hole (211) and is in threaded connection with the expansion screw hole (211).

5. The novel thermal insulation mechanism for a three-way catalyst according to claim 4, characterized by The height of the expansion screw hole (211) is greater than the height of the screw post (207), and the height of the large-diameter circular groove of the middle-shaped through hole (209) is greater than the height of the large-diameter part of the bottom of the convex cylinder (210).

6. The novel thermal insulation mechanism for a three-way catalyst according to claim 3, characterized by, The height from the top of the ring-shaped groove (203) to the bottom of the inner wall of the notch groove (204) matches the height of the mounting screw hole (4).

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