Double-layer U-shaped clamp for connecting pipe
By designing the inner and outer jacket structure of the double-layer U-shaped clamp and the fastener connection, the problem of poor sealing and stability of existing clamps is solved, achieving high sealing and structural stability at the pipe connection, preventing leakage, and ensuring the normal operation of the vehicle exhaust system.
Patent Information
- Application Number
- CN202520820071.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-28
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-04-28
AI Technical Summary
Existing clamps have poor sealing and stability at pipe connections, and are prone to leakage as the usage time increases, affecting the normal operation of the vehicle's exhaust system.
A double-layer U-shaped clamp for connecting pipes is designed, including an inner sleeve and an outer sleeve. The inner sleeve has a first clamping edge on its side wall, and the outer sleeve has a second clamping edge that is staggered on its side wall. The outer sleeve is connected to the first and second clamping ears by fasteners to tighten the second clamping edge. The inner sleeve tightens the first clamping edge under the action of the outer sleeve. The structural strength and sealing performance are improved by setting a bending part and reinforcing rib at the clamping ear.
It improves the sealing effect and structural stability of pipe connections, enhances connection strength, prevents leakage, and ensures the normal operation of the vehicle exhaust system.
Smart Images
Figure CN223881920U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of pipeline clamp, specifically to a double -layer U -shaped clamp of connecting pipe. BACKGROUND
[0002] The exhaust pipe is an important component of the automobile exhaust system, and the connection reliability between different pipes of the exhaust pipe directly affects the normal operation of the exhaust system. The traditional hot end pipe adopts metal flange connection, and due to the thermal expansion and cold shrinkage of the hot end pipe, gaps often appear at the junction between the pipes, causing air leakage problems.
[0003] In order to solve the above problems, suppliers gradually use clamps to connect the pipe junction. However, the conventional clamp can only play a role in connecting the pipe, and the sealing and stability are poor. With the increase of use time, the different pipe connections of the exhaust pipe may leak, affecting the automobile exhaust system. UTILITY MODEL CONTENTS
[0004] The utility model discloses a purpose is to solve the clamp in prior art can only play a role in connecting the pipe, and the sealing and stability are poor, with the increase of use time, the different pipe connections of the exhaust pipe may leak, affect the automobile exhaust system problem.
[0005] To solve the above problems, the utility model provides a double -layer U -shaped clamp of connecting pipe, including inner sleeve and outer sleeve, the side peripheral wall of inner sleeve is equipped with the first clamping edge along the axial direction, the side peripheral wall of outer sleeve is equipped with the second clamping edge along the axial direction, the outer sleeve is connected in the outer side of inner sleeve, and the first clamping edge and the second clamping edge are staggered, the outer sleeve is equipped with the first ear and the second ear along the radial direction outward extension respectively in the position corresponding to the both sides of second clamping edge,
[0006] The side of the first ear away from the second clamping edge and the two sides of the first ear are bent to the direction of the second ear to form the first bending part of the U shape, the side of the second ear away from the second clamping edge and the two sides of the second ear are bent to the direction of the first ear to form the second bending part of the U shape, and the size of the first bending part opposite the second bending part is reduced, so that the second bending part covers the first bending part, the first ear and the second ear are respectively provided with oppositely arranged mounting holes, a fastener is connected in the mounting hole of the first ear and the second ear, the outer sleeve is tightened to the second clamping edge through the fastener, and the inner sleeve is tightened to the first clamping edge under the action of the outer sleeve.
[0007] Compared with the prior art, the above scheme designs the outer clamping sleeve and the inner clamping sleeve, the inner clamping sleeve is sleeved to the pipe joint, and the outer clamping sleeve is sleeved to the outer side of the inner clamping sleeve; during assembly, the outer clamping sleeve is connected to the first clamping ear and the second clamping ear through the fastener, the tightening of the second clamping edge is realized, and then the inner clamping sleeve realizes the tightening of the first clamping edge under the action of the outer clamping sleeve; since the first clamping edge and the second clamping edge are staggered, the inner clamping sleeve can realize the sealing effect of the pipe joint, and the outer clamping sleeve can provide strong guarantee for the connection strength of the pipe joint and the inner clamping sleeve; meanwhile, the first bending part and the second bending part are arranged on the first clamping ear and the second clamping ear respectively, when the second clamping edge is tightened and the first clamping ear and the second clamping ear are close to each other, on the one hand, the first bending part abuts against the second clamping ear, that is, a second connection point other than the fastener is formed, so that the structural strength is improved; on the other hand, the second bending part covers the first bending part, so that the first bending part and the first clamping ear are protected, and the structural stability is better.
[0008] In an improved scheme, the protruding height of the first bending part relative to the first clamping ear gradually increases in the direction close to the second clamping edge, and the protruding height of the second bending part relative to the second clamping ear gradually increases in the direction close to the second clamping edge, so that when the second clamping edge is tightened and the first clamping ear and the second clamping ear are close to each other, the position of the first bending part close to the second clamping edge will abut against the second clamping ear first, so that the second clamping edge is more stable after being tightened.
[0009] In an improved scheme, reinforcing ribs are arranged between the first clamping ear and the outer clamping sleeve and between the second clamping ear and the outer clamping sleeve, so that the structural strength of the first clamping ear and the second clamping ear relative to the outer clamping sleeve is effectively improved.
[0010] In an improved scheme, the first clamping ear and the second clamping ear are both two, the two first clamping ears are distributed at two ends of the second clamping edge, the two second clamping ears are distributed at two ends of the second clamping edge, and the first clamping ear and the second clamping ear at the same end of the second clamping edge correspond to one fastener, so that the second clamping edge is more uniformly and stably tightened.
[0011] In an improved scheme, the two ends of the inner clamping sleeve protrude from the two ends of the outer clamping sleeve, the two ends of the inner clamping sleeve are provided with flanges bent in the direction of the outer clamping sleeve, the flanges are provided with positioning grooves, and the outer clamping sleeve is provided with positioning blocks embedded into the positioning grooves, so that the circumferential positioning of the inner clamping sleeve and the outer clamping sleeve is realized through the embedding action of the positioning grooves and the positioning blocks.
[0012] In an improved scheme, the flanges of the two ends of the inner clamping sleeve are in the shape of a circular arc, so that damage to the pipe or the outside world is avoided.
[0013] In an improved scheme, the fastener comprises a bolt and a nut, the bolt is inserted into the mounting hole of the second lug at the nut end, and the bolt is connected with the nut at the screw end after passing through the mounting hole of the first lug, and the adjustment is simple and convenient.
[0014] In an improved scheme, the inner sleeve is provided with U-shaped pins corresponding to one side of the first clamping edge, and the inner sleeve is provided with embedding grooves corresponding to the other side of the first clamping edge, and the pins and the embedding grooves are arranged in pairs, and when the first clamping edge of the inner sleeve is tightened, the pins are inserted into the corresponding embedding grooves, and the two ends of the first clamping edge correspond to the two ends of the pipe connection, so that the axial sealing of the first clamping edge is realized through the insertion of the pins and the embedding grooves, and the sealing effect of the pipe connection is further improved. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is an overall schematic view of a double-layer U-shaped clamp for connecting pipes Figure 1 ;
[0016] Figure 2 It is an overall schematic view of a double-layer U-shaped clamp for connecting pipes Figure 2 ;
[0017] Figure 3 It is a front view of a double-layer U-shaped clamp for connecting pipes;
[0018] Figure 4 It is a sectional view along the A-A sectional line in Figure 3 the middle.
[0019] BRIEF DESCRIPTION OF DRAWINGS,
[0020] 1, inner sleeve; 11, first clamping edge; 12, flange; 121, positioning groove; 13, pin; 14, embedding groove; 2, outer sleeve; 21, second clamping edge; 22, first lug; 221, first bending part; 23, second lug; 231, second bending part; 24, mounting hole; 25, positioning block; 26, reinforcing rib; 3, fastener; 31, bolt; 32, nut. DETAILED DESCRIPTION
[0021] It should be understood by those skilled in the art that the following embodiments are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments as needed in order to adapt to specific application occasions.
[0022] In the following description of the embodiments, it is necessary to point out that unless explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected, it can be mechanically connected, or electrically connected, it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0023] In the embodiments of the present application, unless explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0024] The present application will be further described in detail below in combination with the drawings and specific embodiments.
[0025] Please refer to Figures 1-4 The embodiment of the utility model provides a kind of double-layer U-shaped clamp of connecting pipe, including inner sleeve 1 and outer sleeve 2, the side wall of inner sleeve 1 is equipped with the first clamping edge 11 along axial direction, the side wall of outer sleeve 2 is equipped with the second clamping edge 21 along axial direction, outer sleeve 2 is sleeved on the outside of inner sleeve 1, and first clamping edge 11 and second clamping edge 21 are staggered, outer sleeve 2 is respectively equipped with the first ear 22 and the second ear 23 extending radially outwardly corresponding to the position of the two sides of second clamping edge 21,
[0026] The side of first ear 22 away from second clamping edge 21 and the two sides of first ear 22 are all bent to the direction of second ear 23 and form the first bending part 221 of U shape, the side of second ear 23 away from second clamping edge 21 and the two sides of second ear 23 are all bent to the direction of first ear 22 and form the second bending part 231 of U shape, and the size of first bending part 221 relative to second bending part 231 reduces, so that second bending part 231 covers first bending part 221, first ear 22 and second ear 23 are respectively equipped with oppositely arranged mounting holes 24, a fastener 3 is connected in the mounting hole 24 of first ear 22 and second ear 23, outer sleeve 2 is tightened to second clamping edge 21 by fastener 3, and inner sleeve 1 is tightened to first clamping edge 11 under the action of outer sleeve 2.
[0027] Compared with the prior art, the above scheme designs the outer clamping sleeve 2 and the inner clamping sleeve 1, wherein the inner clamping sleeve 1 is used for sleeving the pipe joint, and the outer clamping sleeve 2 is sleeved outside the inner clamping sleeve 1; during assembly, the outer clamping sleeve 2 is connected to the first clamping ear 22 and the second clamping ear 23 through the fastener 3, the tightening of the second clamping edge 21 is realized, and then the inner clamping sleeve 1 realizes the tightening of the first clamping edge 11 under the action of the outer clamping sleeve 2; since the first clamping edge 11 and the second clamping edge 21 are staggered, the inner clamping sleeve 1 can realize the sealing effect of the pipe joint, and the outer clamping sleeve 2 can provide strong guarantee for the connection strength of the pipe joint and the inner clamping sleeve 1; meanwhile, the first bending part 221 and the second bending part 231 are arranged on the first clamping ear 22 and the second clamping ear 23 respectively, when the second clamping edge 21 is tightened and the first clamping ear 22 and the second clamping ear 23 are close to each other, on the one hand, the first bending part 221 will abut against the second clamping ear 23, that is, a second connection point other than the fastener 3 is formed, so that the structural strength is improved; on the other hand, the second bending part 231 will cover the first bending part 221, so that the first bending part 221 and the first clamping ear 22 are protected, and the structural stability is better.
[0028] As an improvement of the embodiment, the protruding height of the first bending part 221 relative to the first clamping ear 22 gradually increases along the direction close to the second clamping edge 21, and the protruding height of the second bending part 231 relative to the second clamping ear 23 gradually increases along the direction close to the second clamping edge 21, so that when the second clamping edge 21 is tightened and the first clamping ear 22 and the second clamping ear 23 are close to each other, the position of the first bending part 221 close to the second clamping edge 21 will abut against the second clamping ear 23 first, so that the second clamping edge 21 is more stable after being tightened.
[0029] Further, the reinforcing ribs 26 are arranged between the first clamping ear 22 and the outer clamping sleeve 2 and between the second clamping ear 23 and the outer clamping sleeve 2, so that the structural strength of the first clamping ear 22 and the second clamping ear 23 relative to the outer clamping sleeve 2 is effectively improved.
[0030] In the embodiment, the first clamping ear 22 and the second clamping ear 23 are both two, the two first clamping ears 22 are distributed at two ends of the second clamping edge 21, the two second clamping ears 23 are distributed at the two ends of the second clamping edge 21, and the first clamping ear 22 and the second clamping ear 23 at the same end of the second clamping edge 21 correspond to one fastener 3, so that the second clamping edge 21 is more uniformly and stably tightened.
[0031] As another improvement of the embodiment, the two ends of the inner clamping sleeve 1 protrude from the two ends of the outer clamping sleeve 2, the two ends of the inner clamping sleeve 1 are provided with the flanges 12 bent in the direction of the outer clamping sleeve 2, the flanges 12 are provided with the positioning grooves 121, and the outer clamping sleeve 2 is provided with the positioning blocks 25 embedded into the positioning grooves 121, so that the circumferential positioning of the inner clamping sleeve 1 and the outer clamping sleeve 2 is realized through the embedding action of the positioning grooves 121 and the positioning blocks 25.
[0032] Further, the flanges 12 at the two ends of the inner sleeve 1 are arc-shaped, so as to avoid damaging the pipeline or the external environment.
[0033] In the embodiment, the fastener 3 comprises a bolt 31 and a nut 32, the threaded end of the bolt 31 is inserted into the mounting hole 24 of the second clamping lug 23, the screw end of the bolt 31 is connected with the nut 32 after passing through the mounting hole 24 of the first clamping lug 22, and the adjustment is simple and convenient. Of course, the fastener 3 can also adopt other forms in the prior art as long as it can achieve the fastening of the two clamping lugs, and the design is not limited thereto.
[0034] As another improvement of the embodiment, the inner sleeve 1 is provided with U-shaped pins 13 corresponding to one side of the first clamping edge 11, the pins 13 are two and located at the two ends of the first clamping edge 11 respectively; the inner sleeve 1 is provided with embedding grooves 14 corresponding to the other side of the first clamping edge 11, the embedding grooves 14 are two and correspond to the pins 13 one by one, when the first clamping edge 11 of the inner sleeve 1 is tightened, the pins 13 are inserted into the corresponding embedding grooves 14, the two ends of the first clamping edge 11 correspond to the two ends of the pipeline connection respectively, so that the axial sealing of the first clamping edge 11 is realized through the insertion of the pins 13 and the embedding grooves 14, and the sealing effect of the pipeline connection is further improved.
[0035] It should be noted that, in the description of the present application, the terms indicating the direction or position relationship are based on the direction or position relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application; all directional indications (such as up, down, left, right, front, back, inner, outer) are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture, and if the specific posture changes, the directional indications will also change accordingly.
[0036] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "in this embodiment", "specific examples", or "some examples" means that the specific features, mechanisms, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, 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 the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.
[0037] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any changes or replacements within the technical scope disclosed by the present application can be easily conceived by the person skilled in the art, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A double-layer U-shaped clamp for connecting pipes, characterized in that, The utility model relates to a double -layered sleeve, including inner sleeve (1) and outer sleeve (2), the side perimeter wall of inner sleeve (1) is equipped with the first clamping edge (11) along the axial direction, the side perimeter wall of outer sleeve (2) is equipped with the second clamping edge (21) along the axial direction, and the outer sleeve (2) is sleeved on the outside of inner sleeve (1), and the first clamping edge (11) and the second clamping edge (21) are staggered, and the outer sleeve (2) is equipped with the first ear (22) and the second ear (23) respectively along the radial direction outwardly extending corresponding to the position of the second clamping edge (21) both sides, The side of the first ear (22) away from the second clamping edge (21) and the both sides of the first ear (22) are all bent to the direction of the second ear (23) and form the first bending part (221) of U shape, the side of the second ear (23) away from the second clamping edge (21) and the both sides of the second ear (23) are all bent to the direction of the first ear (22) and form the second bending part (231) of U shape, and the size of the first bending part (221) is reduced relative to the second bending part (231), so that the second bending part (231) covers the first bending part (221), the first ear (22) and the second ear (23) are respectively equipped with the mounting hole (24) of opposite arrangement, a fastener (3) is connected in the mounting hole (24) of the first ear (22) and the second ear (23), the outer sleeve (2) is tightened to the second clamping edge (21) through the fastener (3), and the inner sleeve (1) is tightened to the first clamping edge (11) under the action of the outer sleeve (2).
2. The double-layer U-shaped clamp for connecting pipes according to claim 1, characterized in that, The protruding height of the first bending part (221) relative to the first ear (22) gradually increases along the direction close to the second clamping edge (21), and the protruding height of the second bending part (231) relative to the second ear (23) gradually increases along the direction close to the second clamping edge (21).
3. The double-layer U-shaped clamp for connecting pipes according to claim 1, characterized in that, Reinforcing ribs (26) are arranged between the first ear (22) and the outer sleeve (2) and between the second ear (23) and the outer sleeve (2), so as to effectively improve the structural strength of the first ear (22) and the second ear (23) relative to the outer sleeve (2).
4. The double-layer U-shaped clamp for connecting pipes according to claim 1 or 2 or 3, characterized in that, 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 (3).
5. The double-layer U-shaped clamp for connecting pipes according to claim 1, characterized in that, The two ends of the inner sleeve (1) protrude from the two ends of the outer sleeve (2), the two ends of the inner sleeve (1) are provided with flanges (12) bent towards the outer sleeve (2), the flanges (12) are provided with positioning grooves (121), and the outer sleeve (2) is provided with positioning blocks (25) embedded into the positioning grooves (121).
6. The double-layer U-shaped clamp for connecting pipes according to claim 5, characterized in that The flanges (12) at the two ends of the inner sleeve (1) are in arc shape.
7. The connecting pipe double-layer U-shaped clamp according to claim 1, characterized in that, The fastener (3) comprises a bolt (31) and a nut (32), the screw end of the bolt (31) is inserted into the mounting hole (24) of the second lug (23), and the screw rod end of the bolt (31) is connected with the nut (32) after passing through the mounting hole (24) of the first lug (22).
8. The connecting pipe double-layer U-shaped clamp according to claim 1, characterized in that, The inner sleeve (1) is provided with U-shaped pins (13) corresponding to one side of the first clamping edge (11), the pins (13) are two and located at both ends of the first clamping edge (11) respectively; the inner sleeve (1) is provided with embedding grooves (14) corresponding to the other side of the first clamping edge (11), the embedding grooves (14) are two and correspond to the pins (13) one by one, when the first clamping edge (11) of the inner sleeve (1) is tightened, the pins (13) are inserted into the corresponding embedding grooves (14).