A buffer type clamp
By introducing buffer components and reinforcing ribs into the clamp, the problem of breakage caused by the direct application of locking force to the abutment block is solved, achieving progressive buffering and stress dispersion, and improving the stability and tear resistance of the clamp.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUEQING DONGBO ELECTROMECHANICAL
- Filing Date
- 2025-08-13
- Publication Date
- 2026-06-02
AI Technical Summary
During the tightening process, the existing clamps exert a tightening force directly on the abutment block, causing the abutment block to become thinner and softer, posing a risk of breakage.
A buffer-type clamp is designed, which uses a buffer component composed of several interconnected buffer plates. The clamping force is absorbed through a progressive buffer structure, and the load transmission path is changed by setting reinforcing ribs and support plates to avoid stress concentration.
It effectively reduces the risk of breakage of the abutment block, improves the structural stability and tear resistance of the clamp, and extends its service life.
Smart Images
Figure CN224315673U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of clamps, and in particular to a buffer type clamp. Background Technology
[0002] Clamps are a commonly used type of fastener, with advantages such as simple structure, low price, and convenient assembly and disassembly. Clamps can be used as key components for pipeline connections and are widely used in petroleum, chemical, water supply and other fields.
[0003] In related technologies of clamps, such as the invention patent with announcement number CN116517932A, a high-strength clamp is disclosed. A first clamping member is inserted into the first locking hole, and a second clamping member is inserted into the second locking hole. Then, after clamping the clamping part with a tool pliers, the force-applying part on the first and second clamping members abuts against the outer wall of the abutting block. This reduces the stress at the abutment point between the first clamping member and the inner edge of the first locking hole when the clamp is tightened, and also reduces the possibility of tearing at the four corners of the inner edges of the first and second locking holes.
[0004] However, in actual use, the above solution does not have a buffer on the clamp to cushion the locking part. As a result, the locking force of the locking part will act directly on the abutment block. Since the abutment block will actually become thinner and softer after stamping, there is a risk that the highest point of the protrusion on both sides of the abutment block will be directly pulled off. Summary of the Invention
[0005] A buffered clamp is provided to buffer the locking force generated by the snap-fit component.
[0006] The above-mentioned objective of this application is achieved through the following technical solution:
[0007] A buffer-type clamp includes a clamp body fitted onto a pipe fitting. The clamp body includes a fastening part, a connecting part, and a locking part. The two sides of the fastening part are fixedly connected to the connecting part and the locking part, respectively. The connecting part is provided with a snap-fit element. The locking part has a snap-fit notch for inserting the snap-fit element. The locking part has an abutment block at the angle on the side of the snap-fit notch away from the fastening part. The clamp also includes a buffer element, which includes several interconnected buffer plates. Two adjacent buffer plates are at a certain angle. One end of the buffer element is fixedly connected to the inner wall of the side of the snap-fit notch away from the fastening part, and the other end of the buffer element abuts against the side of the snap-fit element away from the fastening part.
[0008] By adopting the above technical solution, the locking force when the clamp is tightened is directly applied to the buffer component, which is composed of several interconnected buffer plates. These interconnected buffer plates can provide progressive buffering, absorb the locking force of the clamping component, and prevent the locking force from acting directly on the edge of the abutment block or the inner wall of the clamping notch. By sacrificing part of the buffer component to buffer the locking force generated by the clamping component, the risk of the abutment block breaking due to stress concentration is reduced.
[0009] Preferably, the end of the buffer sheet near the fastening part extends away from the connecting part.
[0010] By adopting the above technical solution, the distance between the buffer plate and the inner wall of the snap-fit notch near the fastening part gradually increases from bottom to top, forming a gradually expanding opening. This guides the snap-fit component to slide smoothly into the snap-fit notch from the bottom, ensuring that the snap-fit component does not exert a locking force on the buffer plate before it is fully locked, and only begins to bear force when it comes into contact with the buffer plate.
[0011] Preferably, the buffer sheet near the fastening part is provided with a first reinforcing rib, and the side of the snap-fit member away from the fastening part is pressed against the first reinforcing rib.
[0012] By adopting the above technical solution, the setting of the first reinforcing rib can not only stabilize and guide the counter-pressure of the snap-fit component and prevent the snap-fit component from sliding or shifting on the buffer plate under the action of locking force, but also enhance the local stiffness of the buffer plate, ensuring that the locking force is evenly distributed and effectively converted into the buffer deformation of the buffer component.
[0013] Preferably, the first reinforcing rib is located at the end of the buffer sheet.
[0014] By adopting the above technical solution, when the snap-fit component presses against the buffer plate near the fastening part, the snap-fit component applies a pressure force to the buffer plate towards the surface of the connecting part. When the buffer plate is locked by the snap-fit component, it ensures that the buffer plate can only undergo elastic deformation along the surface of the connecting part, thus avoiding the risk of the buffer plate bending and deforming away from the connecting part.
[0015] Preferably, the buffer sheet has a second reinforcing rib on the side facing away from the fastening part along its own installation direction.
[0016] By adopting the above technical solution, the second reinforcing rib strengthens the side of the buffer sheet facing away from the fastening part. When the snap-fit part presses against the buffer sheet for buffering, it ensures that the buffer sheet only undergoes elastic deformation along the surface of the connecting part, thus limiting the bending deformation of the buffer sheet facing away from the connecting part.
[0017] Preferably, the buffer further includes a support piece, one end of which is fixedly connected to the buffer piece on the side away from the fastening part, and the other end of which is fixedly connected to the inner wall of the snap-fit notch on the side away from the fastening part.
[0018] By adopting the above technical solution, the presence of the support piece moves the connection position of the buffer piece from the inner wall of the snap-fit notch where stress is concentrated to the side of the support piece closer to the fastening part. This causes the locking force generated by the snap-fit to act on the support piece first instead of on the inner wall of the snap-fit notch, reducing the risk of stress concentration and tearing failure of the buffer piece on the inner wall of the snap-fit notch.
[0019] Preferably, there is an inwardly vented opening between the two side walls of the support piece and the corner of the snap-fit notch.
[0020] By adopting the above technical solution, the load transmission path and tear propagation direction are changed, so that the tearing force no longer acts directly on the side wall of the snap-fit notch, but is guided to the connection between the support piece and the snap-fit notch through the inclined structure of the clearance opening. This not only reduces the direct impact of the tearing force on the side wall of the snap-fit interface, but also further disperses the stress, reduces the possibility of side wall tearing, thereby enhancing the structural stability and tear resistance of the clamp.
[0021] Preferably, the locking part has a third reinforcing rib connecting the support plate and the locking part on the side opposite to the connecting part.
[0022] By adopting the above technical solution, the third reinforcing rib, through its own rigidity and connection with the support plate and locking part, enhances the bending and torsional stiffness of the support plate and improves the stability and strength of the connection between the support plate and the locking part.
[0023] Preferably, the buffer sheet is provided with a second reinforcing rib on the side opposite to the fastening part, and the second reinforcing rib and the third reinforcing rib are staggered along the direction of the snap-fit member pressing against the buffer member.
[0024] By adopting the above technical solution, the geometric pressure point formed by the mutual contact of the second and third reinforcing ribs is avoided, the risk of tearing at the protrusion of the second and third reinforcing ribs is reduced, and the fatigue life and overload fracture resistance of the clamp are improved.
[0025] In summary, this application includes at least one of the following beneficial technical effects:
[0026] 1. The buffer consists of several interconnected buffer pieces with a certain angle between adjacent buffer pieces, forming a progressive buffer structure. This structure can effectively absorb the locking force generated by the snap-fit, avoid stress concentration acting directly on the abutment block or the inner edge of the snap-fit notch, and significantly reduce the risk of the abutment block breaking.
[0027] 2. By setting the first and second reinforcing ribs, the rigidity of the buffer sheet under the locking force generated by the buffer clip is enhanced, reducing the risk of bending deformation of the buffer sheet away from the connection part, ensuring that the locking force is evenly distributed and converting the elastic deformation of the buffer sheet on the connection part, thus avoiding local stress concentration. Attached image description:
[0028] Figure 1 This is a schematic diagram of a buffer-type clamp.
[0029] Figure 2 for Figure 1 A magnified view of a portion at point A.
[0030] Reference numerals: 1. Clamp body; 11. Fastening part; 12. Connecting part; 121. Snap-fit part; 1211. First snap-fit part; 1212. Second snap-fit part; 13. Locking part; 131. Snap-fit notch; 1311. First snap-fit interface; 1312. Second snap-fit interface; 2. Buffer part; 21. Buffer plate; 211. First buffer plate; 212. Second buffer plate; 213. Third buffer plate; 22. Support plate; 23. First reinforcing rib; 24. Second reinforcing rib; 3. Clearance opening; 4. Third reinforcing rib; 5. Abutment block. Detailed implementation method:
[0031] The following section provides a more detailed description, in conjunction with the accompanying diagrams:
[0032] As attached Figure 1 and attached Figure 2 As shown, a buffer type clamp includes a clamp body 1 and a buffer 2 sleeved on a pipe fitting. The clamp body 1 is annular and includes a fastening part 11, a connecting part 12 and a locking part 13. The fastening part 11, the connecting part 12 and the locking part 13 are integrally formed. The two sides of the fastening part 11 are fixedly connected to the connecting part 12 and the locking part 13 respectively. The locking part 13 is located on the outer ring of the end of the connecting part 12 and forms an overlapping part with the connecting part 12.
[0033] A snap-fit member 121 is fixedly connected to the connecting part 12. The snap-fit member 121 is hook-shaped and includes a first snap-fit member 1211 and a second snap-fit member 1212. The first snap-fit member 1211 is located on the side close to the fastening part 11, and the second snap-fit member 1212 is located on the side away from the fastening part 11. Both the first snap-fit member 1211 and the second snap-fit member 1212 are stamped by a stamping machine. The ends of the first snap-fit member 1211 and the second snap-fit member 1212 that are close to the fastening part 11 are fixedly connected to the connecting part 12.
[0034] The locking part 13 has a snap-fit notch 131, which is formed by a punching machine. When punching the snap-fit notch 131, only the inner walls of three sides of the snap-fit notch 131 are punched, and the material of the snap-fit notch 131 that was originally punched off is retained and connected to the inner wall of the snap-fit notch 131 on the side away from the fastening part 11. The material left after punching the snap-fit notch 131 is the buffer 2. The snap-fit notch 131 can be punched first using a stamping forming machine, and the snap-fit notch 131 can be punched after the buffer 2 is punched out.
[0035] The snap-fit notch 131 includes a first card interface 1311 for inserting a first snap-fit member 1211 and a second card interface 1312 for inserting a second snap-fit member 1212. Two sets of buffer members 2 are provided here, located on the side of the first card interface 1311 away from the fastening part 11 and the side of the second card interface 1312 away from the fastening part 11, respectively. Each set of buffer members 2 includes several interconnected buffer pieces 21 and support pieces 22. Here, each set of buffer members 2 contains three buffer pieces 21, which are respectively the first buffer piece 211, the second buffer piece 2212, the third buffer piece 2212, the fourth buffer piece 2212, the fifth buffer piece 2212, the sixth buffer piece 2212, the seventh buffer piece 2212, the eighth buffer piece 2212, the ninth buffer piece 2212, the eleventh ... The number of buffer plates 21 in a single set of buffer components 2 can be set according to actual conditions. The first buffer plate 211 is located on the side away from the fastening part 11, and the third buffer plate 213 is located on the side close to the fastening part 11. The first buffer plate 211 and the third buffer plate 213 are arranged opposite to each other. The two ends of the second buffer plate 212 are connected to the first buffer plate 211 and the third buffer plate 213 respectively, and the adjacent buffer plates 21 form a certain angle. The connection between adjacent buffer plates 21 is provided with a chamfer.
[0036] The support piece 22 has a sheet-like structure and is located inside the snap-fit notch 131. The support piece 22 is integrally formed with the first buffer piece 211. One end of the support piece 22 is connected to the first buffer piece 211, and the other end of the support piece 22 is connected to the inner wall of the snap-fit notch 131 away from the fastening part 11. The presence of the support piece 22 moves the connection position of the first buffer piece 211 from the stress concentration point on the inner wall of the snap-fit notch 131 to the side of the support piece 22 closer to the fastening part 11. This causes the locking force generated by the snap-fit member 121 to act on the support piece 22 first instead of the inner wall of the snap-fit notch 131, reducing the risk of stress concentration and tearing failure of the first buffer piece 211 on the inner wall of the snap-fit notch 131.
[0037] The connection between the third buffer piece 213 and the second buffer piece 212 is located within the snap-fit notch 131. The end of the third buffer piece 213 extends away from the connecting part 12, and the side of the snap-fit member 121 away from the fastening part 11 abuts against the third buffer piece 213, so that the distance between the buffer piece 21 and the inner wall of the snap-fit notch 131 near the fastening part 11 gradually increases from bottom to top, forming a gradually expanding opening, guiding the snap-fit member 121 to slide smoothly into the snap-fit notch 131 from the bottom, ensuring that the snap-fit member 121 does not contact the buffer piece 21 before it is fully locked, and only begins to bear force when it abuts against the buffer piece 2.
[0038] The third buffer piece 213 is stamped with a first reinforcing rib 23 along the pressing direction of the snap fastener 121, and the first reinforcing rib 23 is located at the end of the third buffer piece 213. The snap fastener 121 is pressed against the first reinforcing rib 23 on the side away from the fastening part 11. The first reinforcing rib 23 can stably guide the pressing force of the snap fastener 121 and prevent the snap fastener 121 from sliding or shifting on the buffer piece 21 under the action of the locking force. The snap fastener 121 applies a pressing force to the third buffer piece 213 towards the surface of the connecting part 12, ensuring that the third buffer piece 213 can only be elastically deformed along the surface of the connecting part 12, avoiding the risk of the third buffer piece 213 bending and deforming away from the connecting part 12.
[0039] The third buffer plate 213 and the first buffer plate 211 are respectively provided with second reinforcing ribs 24 along their own installation direction on the side facing away from the fastening part 11. Here, the third buffer plate 213 is provided with two second reinforcing ribs 24, and the first buffer plate 211 is provided with two second reinforcing ribs 24. Both the first reinforcing rib 23 and the second reinforcing rib 24 are protrusions formed by stamping with stamping equipment. The second reinforcing ribs 24 strengthen the side of the third buffer plate 213 and the first buffer plate 211 facing away from the fastening part 11. When the snap fastener 121 presses against the buffer member 2 for buffering, it ensures that the third buffer plate 213 and the first buffer plate 211 only undergo elastic deformation along the surface of the connecting part 12, and restricts the bending deformation of the third buffer plate 213 and the first buffer plate 211 facing away from the connecting part 12.
[0040] The locking part 13 is provided with a third reinforcing rib 4 connecting the support piece 22 and the locking part 13 on the side opposite to the connecting part 12. The third reinforcing rib 4 is in a raised position, and the third reinforcing rib 4 and the second reinforcing rib 24 are staggered along the direction of the snap fastener 121 pressing against the buffer piece 2. When the snap fastener 121 generates a large locking force, the adjacent buffer piece 21 undergoes elastic deformation to buffer the locking force. When the buffer piece 21 is insufficient to buffer the locking force, the buffer piece 21 will be pressed against the support piece 22 by the snap fastener 121. In this process, the geometric pressing point formed by the second reinforcing rib 24 and the third reinforcing rib 4 abutting against each other is avoided, reducing the risk of tearing at the protrusion of the second reinforcing rib 24 and the third reinforcing rib 4, and improving the fatigue life and overload fracture resistance of the clamp.
[0041] When punching the snap-fit notch 131, a bevel is punched at the inner corner of the side of the snap-fit notch 131 that connects to the support piece 22, transforming the originally sharp corner into a smoothly transitioned bevel. This effectively disperses the stress concentrated at the corner during locking, avoiding excessive stress concentration at the corner. There are inward relief openings 3 between the two side walls of the support piece 22 and the corner of the snap-fit notch 131. The inner walls of both relief openings 3 are beveled. The inner side wall of the support piece 22 located at the relief opening 3 is positioned opposite to the bevel at the corner of the snap-fit notch 131, changing the load transmission path and tear propagation direction. This means that the tearing force no longer acts directly on the inner wall of the snap-fit notch 131, but is guided to the connection point between the support piece 22 and the snap-fit notch 131 through the inclined structure of the relief opening 3. This reduces the risk of stress concentration and tearing failure caused by the buffer piece 21 on the inner wall of the snap-fit notch 131.
[0042] The locking part 13 is also provided with abutment blocks 5, which are stamped by a stamping forming equipment. There are two sets of abutment blocks 5. The two sets of abutment blocks 5 are located on the side of the first locking interface 1311 away from the fastening part 11 and the side of the second locking interface 1312 away from the fastening part 11, respectively. There are two abutment blocks 5 in the same set. The two abutment blocks 5 are arranged opposite each other and are located at the angle between the side of the first locking interface 1311 away from the fastening part 11 and the side of the second locking interface 1312 away from the fastening part 11, respectively. This reduces the stress at the contact point between the first locking member 1211 and the inner edge of the first locking interface 1311 and the inner edge of the second locking member 1212 and the inner edge of the second locking interface 1312 when the clamp is tightened. It also reduces the possibility of tearing at the four corners of the inner edges of the first locking interface 1311 and the second locking interface 1312, thereby improving the tear resistance of the clamp.
[0043] Implementation process of this embodiment:
[0044] The snap-fit 121 slides into the bottom of the snap-fit notch 131. When the clamp is tightened further, the side of the snap-fit 121 away from the fastening part 11 presses against the first reinforcing rib 23 on the third buffer piece 213. The locking force is transmitted to the third buffer piece 213 through the first reinforcing rib 23. The third buffer piece 213 undergoes elastic deformation and causes the included angle between adjacent buffer pieces 21 to gradually decrease, absorbing the locking force. The elastic deformation of the buffer piece 21 disperses the locking force to the support piece 22. The support piece 22 transmits part of the load to the locking part 13 through the relief opening 3, further reducing the risk of tearing of the inner wall of the snap-fit notch 131.
[0045] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of protection claimed in this application.
Claims
1. A buffer-type clamp, comprising a clamp body (1) fitted onto a pipe fitting, the clamp body (1) comprising a fastening part (11), a connecting part (12) and a locking part (13), wherein the fastening part (11) is fixedly connected to the connecting part (12) and the locking part (13) on both sides respectively, the connecting part (12) is provided with a snap-fit member (121), the locking part (13) is provided with a snap-fit notch (131) for inserting the snap-fit member (121), and the locking part (13) is provided with an abutment block (5) at the included angle on the side of the snap-fit notch (131) away from the fastening part (11), characterized in that, It also includes a buffer (2), which includes several interconnected buffer pieces (21), with a certain angle between two adjacent buffer pieces (21), and one end of the buffer (2) is fixedly connected to the inner wall of the snap-fit notch (131) away from the fastening part (11), and the other end of the buffer (2) abuts against the side of the snap-fit part (121) away from the fastening part (11).
2. The buffer-type clamp according to claim 1, characterized in that, The end of the buffer piece (21) near the fastening part (11) extends away from the connecting part (12).
3. A buffer-type clamp according to claim 2, characterized in that, A first reinforcing rib (23) is provided on the buffer plate (21) near the fastening part (11), and the snap fastener (121) is pressed against the first reinforcing rib (23) on the side away from the fastening part (11).
4. A buffer-type clamp according to claim 3, characterized in that, The first reinforcing rib (23) is located at the end of the buffer sheet (21).
5. A buffer-type clamp according to claim 1, characterized in that, The buffer sheet (21) is provided with a second reinforcing rib (24) on the side opposite to the fastening part (11) along its own installation direction.
6. A buffer-type clamp according to claim 1, characterized in that, The buffer (2) also includes a support piece (22), one end of which is fixedly connected to a buffer piece (21) on the side away from the fastening part (11), and the other end of which is fixedly connected to the inner wall of the snap notch (131) on the side away from the fastening part (11).
7. A buffer-type clamp according to claim 6, characterized in that, The support piece (22) has an inwardly vented opening (3) between the two side walls and the corner of the snap-fit notch (131).
8. A buffer-type clamp according to claim 6, characterized in that, The locking part (13) is provided with a third reinforcing rib (4) connecting the support plate (22) and the locking part (13) on the side opposite to the connecting part (12).
9. A buffer-type clamp according to claim 8, characterized in that, The buffer sheet (21) is provided with a second reinforcing rib (24) on the side opposite to the fastening part (11). The second reinforcing rib (24) and the third reinforcing rib (4) are staggered along the direction of the snap fastener (121) pressing against the buffer (2).