Double-layer gasket-added clamp for connecting pipe
By designing the connection method of the inner and outer jackets, and combining fasteners and pads, the problems of insufficient sealing and connection strength of existing clamps were solved, realizing the stability and sealing of the pipeline connection and ensuring the normal operation of the vehicle exhaust system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-03-17
AI Technical Summary
Existing clamps have poor sealing performance at pipe connections, are prone to leakage, have insufficient connection strength, are easily deformed and damaged, and affect the normal operation of the vehicle's exhaust system.
Design a double-layer gasketed clamp for connecting pipes, including an inner sleeve and an outer sleeve, with a first clamp and a second clamp connected by fasteners. The inner sleeve achieves a seal under the action of the outer sleeve, the outer sleeve provides connection strength, and a gasket is placed between the clamps to enhance structural stability.
It improves the sealing effect and connection strength at pipe joints, enhances structural stability, avoids leakage and deformation damage, and ensures the normal operation of the vehicle exhaust system.
Smart Images
Figure CN224003326U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of pipe clamps, and more specifically to a double-layer gasketed clamp for connecting pipes. Background Technology
[0002] The exhaust pipe is a crucial component of a car's exhaust system, and the reliability of the connections between different pipes directly affects the normal operation of the exhaust system. Traditional hot-end pipes use metal flange connections. Due to the thermal expansion and contraction of hot-end pipes, gaps often appear at the junctions between pipes, leading to air leakage.
[0003] To address these issues, suppliers have gradually adopted clamps to connect pipe joints. However, conventional clamps only serve to connect pipes and have poor sealing performance. As usage time increases, leaks may occur at the joints of different exhaust pipes, affecting the vehicle's exhaust system. On the other hand, the clips of conventional clamps are not in contact with each other after being connected by fasteners, resulting in poor connection strength and easy deformation and damage. Utility Model Content
[0004] The purpose of this invention is to solve the problems of existing clamps, which can only connect pipes and have poor sealing performance. As the usage time increases, leakage may occur at the connection points of different pipes in the exhaust pipe, affecting the vehicle's exhaust system. On the other hand, after the clamps are connected by fasteners, the clamps do not make contact with each other, resulting in poor connection strength and easy deformation and damage.
[0005] To address the aforementioned problems, this utility model provides a double-layer gasketed clamp for connecting pipes, comprising an inner sleeve and an outer sleeve. The inner sleeve has a first axially oriented clamping edge on its side peripheral wall, and the outer sleeve has a second axially oriented clamping edge on its side peripheral wall. The outer sleeve is fitted onto the outside of the inner sleeve, with the first and second clamping edges offset from each other. The outer sleeve has a first and a second latch extending radially outward at positions corresponding to both sides of the second clamping edge.
[0006] A first pad is provided between the first and second clips. The first and second clips are respectively provided with opposite mounting holes. A fastener is connected to the mounting holes of the first and second clips. The first pad is provided with a clearance hole through which the fastener can pass. The outer sleeve tightens the second clamping edge through the fastener. The inner sleeve tightens the first clamping edge under the action of the outer sleeve.
[0007] Compared with existing technologies, the above solution designs an outer jacket and an inner jacket. The inner jacket is used to fit onto the pipe connection, while the outer jacket fits onto the outside of the inner jacket. During assembly, the outer jacket connects the first and second catches with fasteners, tightening the second clamping edge. Consequently, the inner jacket, under the action of the outer jacket, tightens the first clamping edge. Since the first and second clamping edges are staggered, the inner jacket achieves a sealing effect at the pipe connection, while the outer jacket provides strong connection strength for both the pipe connection and the inner jacket. Furthermore, the above solution incorporates a first pad between the first and second catches. When the second clamping edge tightens and the first and second catches approach each other, they abut against the sides of the first pad, effectively improving structural strength and stability.
[0008] In an improved embodiment, the fastener includes a bolt and a nut, wherein the nut end of the bolt is inserted into the mounting hole of the second clasp, and the screw end of the bolt passes through the mounting hole of the first clasp and is connected to the nut, making adjustment simple and convenient.
[0009] In an improved embodiment, the middle portions of the first and second clips are bent toward each other to form convex arc portions, and the sides of the first pad are provided with arc-shaped grooves. The convex arc portions of the first and second clips respectively abut against the grooves on both sides of the first pad, thereby effectively increasing the contact area between the first and second clips and the first pad, and further improving the overall structural strength and structural stability after the second clamping edge is tightened.
[0010] In an improved embodiment, the fastener includes a bolt, a nut, and a second washer. The nut end of the bolt is inserted into the mounting hole of the first catch, and the bolt shank end passes through the clearance hole and the mounting hole of the second catch and connects to the nut. The second washer has a through hole and is fitted onto the bolt through the through hole, located between the second catch and the nut. The side of the second washer facing the second catch is convex, and the convex side of the second washer abuts against the side of the second catch facing away from the first catch. The bolt and nut combination allows for simple and convenient adjustment. At the same time, the convex side of the second washer can fully fit against the second catch, while the other side of the second washer abuts against the nut, avoiding damage to the convex part of the second catch caused by direct contact between the nut and the second catch.
[0011] In an improved embodiment, there are two first clips and two second clips. The two first clips are spaced apart at both ends of the second clamping edge, and the two second clips are spaced apart at both ends of the second clamping edge. The first clips and second clips located at the same end of the second clamping edge correspond to one fastener, thereby achieving a more uniform and stable tightening effect on the second clamping edge.
[0012] In an improved embodiment, the two ends of the inner sleeve protrude from the two ends of the outer sleeve, and the two ends of the inner sleeve are provided with flanges that bend towards the outer sleeve. The flanges are provided with positioning grooves, and the outer sleeve is provided with positioning blocks that are fitted into the positioning grooves. Thus, the circumferential positioning of the inner and outer sleeves is achieved through the fitting action of the positioning grooves and positioning blocks.
[0013] In an improved design, the flanges at both ends of the inner sleeve are rounded to avoid damage to the pipe or the outside environment.
[0014] In an improved embodiment, the inner sleeve has two U-shaped prongs on one side corresponding to the first clamping edge, located at both ends of the first clamping edge. The inner sleeve also has two grooves on the other side corresponding to the first clamping edge, each corresponding to one of the prongs. When the first clamping edge of the inner sleeve is tightened, the prongs are inserted into the corresponding grooves. The two ends of the first clamping edge correspond to the two ends of the pipe connection, thereby achieving axial sealing of the first clamping edge through the insertion of the prongs and grooves, further improving the sealing effect at the pipe connection. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of a double-layered gasketed clamp for a connecting pipe;
[0016] Figure 2 This is a front view schematic diagram of a connecting pipe with double-layer gaskets and clamps;
[0017] Figure 3 For along Figure 2 Schematic diagram of the cross section line AA in the middle.
[0018] Explanation of reference numerals in the attached figures.
[0019] 1. Inner sleeve; 11. First clamping edge; 12. Flanged edge; 121. Positioning groove; 13. Pin; 14. Embedded groove; 2. Outer sleeve; 21. Second clamping edge; 22. First retaining lug; 23. Second retaining lug; 24. Convex arc part; 25. Mounting hole; 26. Positioning block; 27. Reinforcing rib; 3. First pad; 31. Clearance hole; 32. Groove; 4. Fastener; 41. Bolt; 42. Nut; 43. Second pad; 431. Through hole. Detailed Implementation
[0020] It should be understood by those skilled in the art that the following embodiments are merely illustrative of the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.
[0021] In the following description of the embodiments, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.
[0022] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0023] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0024] Please see Figures 1-3 This utility model provides a double-layer gasketed clamp for a connecting pipe, comprising an inner sleeve 1 and an outer sleeve 2. The inner sleeve 1 has a first axial clamping edge 11 on its side peripheral wall, and the outer sleeve 2 has a second axial clamping edge 21 on its side peripheral wall. The outer sleeve 2 is fitted onto the outside of the inner sleeve 1, and the first clamping edge 11 and the second clamping edge 21 are staggered. The outer sleeve 2 has a first latch 22 and a second latch 23 extending radially outward on both sides corresponding to the second clamping edge 21.
[0025] A first pad 3 is provided between the first clip 22 and the second clip 23. The first clip 22 and the second clip 23 are respectively provided with mounting holes 25 arranged opposite to each other. A fastener 4 is connected to the mounting holes 25 of the first clip 22 and the second clip 23. The first pad 3 is provided with a clearance hole 31 through which the fastener 4 can pass. The outer sleeve 2 tightens the second clamping edge 21 through the fastener 4. The inner sleeve 1 tightens the first clamping edge 11 under the action of the outer sleeve 2.
[0026] Compared with the prior art, the above solution designs an outer sleeve 2 and an inner sleeve 1. The inner sleeve 1 is used to fit onto the pipe connection, while the outer sleeve 2 fits onto the outside of the inner sleeve 1. During assembly, the outer sleeve 2 connects the first clamp 22 and the second clamp 23 with fasteners 4, thereby tightening the second clamping edge 21. In turn, the inner sleeve 1 tightens the first clamping edge 11 under the action of the outer sleeve 2. Since the first clamping edge 11 and the second clamping edge 21 are staggered, the inner sleeve 1 can achieve a sealing effect at the pipe connection, while the outer sleeve 2 can provide a strong guarantee for the connection strength of the pipe connection and the inner sleeve 1. At the same time, the above solution sets a first pad 3 between the first clamp 22 and the second clamp 23. When the second clamping edge 21 is tightened, the first clamp 22 and the second clamp 23 will abut against the two sides of the first pad 3 respectively, thereby effectively improving the structural strength and structural stability.
[0027] In this embodiment, the fastener 4 includes a bolt 41 and a nut 42. The nut end of the bolt 41 is inserted into the mounting hole 25 of the second clip 23, and the screw end of the bolt 41 passes through the mounting hole 25 of the first clip 22 and is connected to the nut 42. Adjustment is simple and convenient.
[0028] As an improvement to the above embodiment, the middle parts of the first latch 22 and the second latch 23 are bent towards each other to form a convex arc portion 24. The first pad 3 has arc-shaped grooves 32 on both sides. The convex arc portions 24 of the first latch 22 and the second latch 23 respectively abut against the grooves 32 on both sides of the first pad 3, thereby effectively increasing the contact area of the first latch 22 and the second latch 23 relative to the first pad 3, and further improving the overall structural strength and structural stability after the second clamping edge 21 is tightened.
[0029] Furthermore, in addition to the bolt 41 and nut 42, the fastener 4 may also include a second pad 43. The second pad 43 has a through hole 431. The second pad 43 is sleeved on the bolt 41 through the through hole 431 and is located between the second catch 23 and the nut 42. The side of the second pad 43 facing the second catch 23 is convex arc-shaped. The convex arc-shaped side of the second pad 43 abuts against the side of the second catch 23 that is away from the first catch 22. The adjustment using the bolt 41 and nut 42 is simple and convenient. At the same time, the convex arc-shaped side of the second pad 43 can fully fit the second catch 23, and the other side of the second pad 43 can abut against the nut 42, avoiding the problem of the nut 42 directly abutting against the second catch 23 and causing damage to the convex arc part 24 of the second catch 23.
[0030] In this embodiment, there are two first clips 22 and two second clips 23. The two first clips 22 are distributed at intervals at both ends of the second clamping edge 21, and the two second clips 23 are distributed at intervals at both ends of the second clamping edge 21. The first clips 22 and the second clips 23 located at the same end of the second clamping edge 21 correspond to a fastener 4, thereby achieving a more uniform and stable tightening effect on the second clamping edge 21.
[0031] As another improvement to the above embodiment, the two ends of the inner sleeve 1 protrude from the two ends of the outer sleeve 2 respectively. The two ends of the inner sleeve 1 are provided with flanges 12 that bend towards the outer sleeve 2. The flanges 12 are provided with positioning grooves 121. The outer sleeve 2 is provided with positioning blocks 26 that are fitted into the positioning grooves 121. Thus, the circumferential positioning of the inner sleeve 1 and the outer sleeve 2 is achieved through the fitting action of the positioning grooves 121 and the positioning blocks 26.
[0032] Furthermore, the flanges 12 at both ends of the inner sleeve 1 are arc-shaped, thereby avoiding damage to the pipe or the outside world.
[0033] As another improvement to the above embodiment, the inner sleeve 1 is provided with two U-shaped pins 13 on one side of the first clamping edge 11, and the pins 13 are located at the two ends of the first clamping edge 11 respectively. The inner sleeve 1 is provided with two grooves 14 on the other side of the first clamping edge 11, and the grooves 14 are located one by one corresponding to the pins 13. When the first clamping edge 11 of the inner sleeve 1 is tightened, the pins 13 are inserted into the corresponding grooves 14. The two ends of the first clamping edge 11 correspond to the two ends of the pipe connection, thereby achieving axial sealing of the first clamping edge 11 through the insertion action of the pins 13 and the grooves 14, further improving the sealing effect of the pipe connection.
[0034] It should be noted that in the description of this application, the terms "inner" and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application. All directional indications (such as up, down, left, right, front, back, inner, and outer) are only used to explain the relative positional relationships and movement between components in a specific posture. If the specific posture changes, the directional indication will also change accordingly.
[0035] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0036] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A double-layer gasketed clamp for connecting pipes, characterized in that, The utility model relates to a double -layered jacketed pipe, including inner jacket (1) and outer jacket (2), the side perimeter wall of inner jacket (1) is equipped with the first clamping edge (11) along the axial direction, the side perimeter wall of outer jacket (2) is equipped with the second clamping edge (21) along the axial direction, the outer jacket (2) is sleeved in the outside of inner jacket (1), and first clamping edge (11) and second clamping edge (21) are staggered, the outer jacket (2) is equipped with the first ear (22) and second ear (23) respectively along the radial direction outward extension corresponding to the position of second clamping edge (21) both sides, First ear (22) and second ear (23) are equipped with first pad (3) between, first ear (22) and second ear (23) are equipped with the mounting hole (25) of opposite arrangement respectively, a fastener (4) is connected in the mounting hole (25) of first ear (22) and second ear (23), first pad (3) is equipped with the avoidance hole (31) of fastener (4) passing, the outer jacket (2) realizes the tightening of second clamping edge (21) through fastener (4), and inner jacket (1) realizes the tightening of first clamping edge (11) under the action of outer jacket (2).
2. The double-walled padded clamp of claim 1, wherein, The fastener (4) includes a bolt (41) and a nut (42), the screw end of the bolt (41) is inserted into the mounting hole (25) of the first ear (22), and the screw rod end of the bolt (41) is connected with the nut (42) after passing through the avoidance hole (31) and the mounting hole (25) of the second ear (23).
3. The double-walled padded clamp of claim 1, wherein, The middle part of the first ear (22) and the second ear (23) is curved towards each other to form a convex arc part (24), and the two sides of the first pad (3) are provided with arc grooves (32), and the convex arc parts (24) of the first ear (22) and the second ear (23) are respectively abutted to the grooves (32) on the two sides of the first pad (3).
4. The double-walled padded clamp of claim 3, wherein, The fastener (4) includes a bolt (41), a nut (42) and a second pad (43), the screw end of the bolt (41) is inserted into the mounting hole (25) of the first ear (22), and the screw rod end of the bolt (41) is connected with the nut (42) after passing through the avoidance hole (31) and the mounting hole (25) of the second ear (23), the second pad (43) is provided with a through hole (431), the second pad (43) is sleeved on the bolt (41) through the through hole (431) and located between the second ear (23) and the nut (42), one side of the second pad (43) towards the second ear (23) is arc-shaped, and one side of the second pad (43) is abutted to the side of the second ear (23) away from the first ear (22).
5. The double-jacketed padded clamp of any one of claims 1-4, wherein, The first ear (22) and the second ear (23) are both two, the two first ears (22) are distributed at the two ends of the second clamping edge (21), the two second ears (23) are distributed at the two ends of the second clamping edge (21), and the first ear (22) and the second ear (23) at the same end of the second clamping edge (21) correspond to one fastener (4).
6. The double wall padded clamp of claim 1, wherein, The two ends of the inner jacket (1) protrude from the two ends of the outer jacket (2), the two ends of the inner jacket (1) are provided with flanges (12) which are bent towards the outer jacket (2), the flanges (12) are provided with positioning grooves (121), and the outer jacket (2) is provided with positioning blocks (26) which are embedded into the positioning grooves (121).
7. The double wall padded clamp of claim 6, wherein, The flanges (12) at the two ends of the inner jacket (1) are in the shape of a circular arc.
8. The double wall padded clamp of claim 1, wherein, The inner jacket (1) is provided with U-shaped pins (13) at positions corresponding to one side of the first clamping edge (11), the pins (13) are two and are respectively located at the two ends of the first clamping edge (11); the inner jacket (1) is provided with embedding grooves (14) at positions corresponding to the other side of the first clamping edge (11), the embedding grooves (14) are two and are respectively corresponding to the pins (13), when the first clamping edge (11) of the inner jacket (1) is tightened, the pins (13) are inserted into the corresponding embedding grooves (14).