clamp

Abstract

The application provides a clamp, which comprises a first clamping body and a second clamping body arranged along the circumference of the first clamping member. The first clamping body comprises a first clamping member and a first flexible member. The second clamping body comprises a second clamping member and a second flexible member. The second clamping member is fixed to the circumferential side wall of the first clamping member and forms a cavity together with the first clamping member. The flexible protection member formed by the second flexible member is arranged opposite to the first flexible member in the radial direction of the first clamping member and forms a flexible clamping cavity with the first flexible member in the cavity. The flexible clamping cavity is used for clamping an elastic member. The clamp can realize flexible clamping of the elastic member by the flexible protection member and the first flexible member, and can ensure that an annular elastic structure made of the elastic member has good stability in structure and size, so as to improve the yield of the annular elastic structure and reduce the manufacturing cost of the annular elastic structure.

Description

Technical Field

[0001] This application relates to the field of manufacturing technology of ring-shaped elastic structures, and in particular to a clamp. Background Technology

[0002] The elastic energy storage seal structure is a high-performance sealing component with pressure self-tightening characteristics, and it has broad application prospects in ultra-high temperature, ultra-low temperature, corrosive media and ultra-high pressure conditions.

[0003] The annular spring is an indispensable component of the elastic energy storage sealing assembly, significantly influencing its sealing performance. During the manufacturing process, a straight spring (referred to as a straight spring) is welded end-to-end to form the annular spring. Since the annular spring is welded from a straight spring, the ends of the straight spring must be accurately aligned during welding; otherwise, the roundness and circumferential dimensions of the resulting annular spring will be difficult to guarantee, thus affecting the energy storage sealing performance of the elastic component.

[0004] When welding ring springs, straight springs are typically held in place using clamps or manually. However, existing clamps easily deform straight springs, so manual holding is currently the primary method of welding. But manually holding straight springs makes it difficult to guarantee their stability during welding, resulting in ring springs with significant machining errors, poor structural and dimensional stability, low yield, and high manufacturing costs. Summary of the Invention

[0005] This application provides a clamp that, while achieving flexible clamping of elastic elements, ensures that the annular elastic structure made from the elastic elements has good structural and dimensional stability, thereby improving the yield of the annular elastic structure and reducing the manufacturing cost of the annular elastic structure.

[0006] This application provides a clamp, which includes:

[0007] The first clamping body includes a first clamping member and a first flexible member; the first flexible member is disposed on the circumferential sidewall of the first clamping member;

[0008] At least two second clamping bodies are sequentially arranged along the circumference of the first clamping member; the second clamping bodies include

[0009] The second clamping member and the second flexible member are provided on the circumferential sidewall of each second clamping member. The second clamping member is fixed to the circumferential sidewall of the first clamping member and forms a cavity with the first clamping member. The cavity forms a first opening on the side away from the first clamping member. The second flexible member forms a flexible protective member. The flexible protective member and the first flexible member are arranged opposite to each other in the radial direction of the first clamping member and form a flexible clamping cavity with the first flexible member in the cavity. The flexible clamping cavity is annular and is used to clamp the elastic member. The flexible protective member has a second opening at the first opening. The second opening is used to connect the first opening and the flexible clamping cavity.

[0010] In some alternative embodiments, adjacent faces of adjacent second clamps are in contact with each other along the circumferential direction of the first clamp, and at least a portion of adjacent second flexible members are in contact with each other on adjacent faces.

[0011] In some alternative embodiments, the first clamping member has a first side and a second side in the axial direction, the second clamping body is engaged with the first clamping body on the first side, and there is a gap between the second side and the first clamping body, so that the cavity forms an annular opening at the gap;

[0012] At least one of the first clamping member and the second clamping member extends at the second side toward the side that is close to each other.

[0013] In some alternative embodiments, each of the second flexible members is in radial contact with the first clamping member on a first side, and both the flexible protective member and the first flexible member are located within the cavity.

[0014] In some alternative embodiments, the flexible protective member contacts the first flexible member on a first side in the radial direction of the first clamping member.

[0015] In some alternative embodiments, the second flexible member extends to the outside of the cavity and contacts the first flexible member on a first side in the radial direction of the first clamping member.

[0016] In some alternative implementations, the flexible clamping cavity is annular in shape.

[0017] In some optional embodiments, the circumferential sidewall of the first clamping member has a first arcuate surface, and the side of the second clamping member facing the first clamping member has a second arcuate surface. The second arcuate surface and the first arcuate surface form a cavity, and the cavity is annular.

[0018] The first flexible component is an arc-shaped component that adapts to the shape of the first arc-shaped surface, and the second flexible component is an arc-shaped component that adapts to the shape of the second arc-shaped surface.

[0019] In some alternative embodiments, at least two second clamping bodies are provided with a first opening between two adjacent second clamping bodies, and the second opening is disposed opposite to the first opening in the radial direction of the first clamping body.

[0020] In some alternative implementations, the number of second clamps is three, and two of the three second clamps are of the same size.

[0021] This application provides a clamp, which includes a first clamping body and at least two second clamping bodies. The first clamping body includes a first clamping member and a first flexible member, and the second clamping body includes a second clamping member and a second flexible member. The second clamping member and the first clamping member form a cavity, and the second flexible member forms a flexible protective member. The flexible protective member and the first flexible member are arranged opposite to each other in the radial direction of the first clamping member, and together with the first flexible member, they form a flexible clamping cavity in the cavity. Since the flexible clamping cavity is annular and used to clamp an elastic member, the elastic member can be placed in the flexible clamping cavity. Through the flexible protective member and the first flexible member, the elastic member can be flexibly clamped on different sides of the first clamping member in the radial direction, replacing the human hand, so as to prevent the elastic member from undergoing plastic deformation before welding, while achieving stable clamping of the elastic member. Furthermore, the elastic element can form a ring under the constraint of the flexible clamping cavity. The first and second openings facilitate the welding of the first and second ends of the elastic element in the flexible clamping cavity, so that the elastic element can form a ring elastic structure after welding. This ensures that the manufactured ring elastic structure has good stability in terms of structure and size, thereby improving the yield of the ring elastic structure and reducing the manufacturing cost of the ring elastic structure. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the assembly of the elastic energy storage sealing assembly provided in the embodiments of this application between the sealed body and the sealed shaft;

[0024] Figure 2 This is a schematic diagram of the structure of the annular elastic element provided in the embodiments of this application;

[0025] Figure 3 This is a schematic diagram of the structure of a clamp provided in an embodiment of this application from a first perspective;

[0026] Figure 4This is a schematic diagram of one fixing method of the first clamping member and the second clamping member in the fixture provided in the embodiments of this application;

[0027] Figure 5 This is a schematic diagram of the assembly of a ring-shaped elastic element in a fixture according to an embodiment of this application;

[0028] Figure 6 yes Figure 3 A schematic diagram of the middle clamp from a second perspective;

[0029] Figure 7 yes Figure 3 A schematic diagram of the middle clamp from a third-person perspective;

[0030] Figure 8 yes Figure 3 A schematic diagram of the middle clamp from a third-person perspective;

[0031] Figure 9 yes Figure 3 Cross-sectional view of the clamp in the AA direction;

[0032] Figure 10 yes Figure 3 Cross-sectional view of the clamp in the BB direction;

[0033] Figure 11 This is a partial schematic diagram of the interior of the fixture provided in an embodiment of this application;

[0034] Figure 12 This is another partial schematic diagram of the interior of the fixture provided in the embodiments of this application;

[0035] Figure 13 This is another partial schematic diagram of the interior of the fixture provided in the embodiments of this application.

[0036] Figure label:

[0037] 100-Clamp;

[0038] 10-First clamping body; 11-First clamping element; 111-First arc-shaped surface; 112-First side; 113-Second side; 12-First flexible element; 121-First flexible part;

[0039] 20-Second clamping body; 20a-Two-part clamping body; 20b-Four-part clamping body; 21-Second clamping element; 211-Second arc-shaped surface; 212-First notch; 22-Second flexible element; 221-Second flexible part;

[0040] 30 - First opening;

[0041] 40 - Second opening;

[0042] 50 - Flexible clamping cavity;

[0043] 200 - Elastic element; 210 - Head end; 220 - Tail end;

[0044] 300 - Fastener; 310 - First fixing plate; 320 - Second fixing plate;

[0045] 400 - Sealing sleeve;

[0046] 500-ring spring;

[0047] 600 - Sealed body;

[0048] 700 - Sealed shaft. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0050] As described in the background section, the elastic energy storage sealing assembly, as a high-performance sealing assembly, has a wide range of application prospects in ultra-high temperature, ultra-low temperature, corrosive media and ultra-high pressure conditions due to its pressure self-tightening characteristics.

[0051] See Figure 1 As shown, the elastic energy storage sealing structure includes a sealing sleeve 400 and an annular spring 500 disposed within the sealing sleeve 400. The annular spring 500 can also be referred to as a circumferential spring. When the elastic energy storage sealing structure is applied to seal between the sealed body 600 and the sealed shaft 700 within a mechanical device, the sealing sleeve 400 can be located between the sealed body 600 and the sealed shaft 700, and the annular spring 500 is assembled within the opening of the sealing sleeve 400. Furthermore, the sealing sleeve 400 is interference-fitted with both the sealed body 600 and the sealed shaft 700 to achieve the sealing between the sealed body 600 and the sealed shaft 700 through the sealing sleeve 400, thereby preventing leakage of the sealed fluid within the mechanical device. The mechanical device can be a motor, an engine piston cylinder, a hydraulic pump, a hydraulic valve, etc. The structure of the mechanical device is not particularly limited in this application. For example, when the mechanical device is an engine piston cylinder motor, the sealed body 600 can be an engine piston cylinder body / engine piston ring. For example, when the mechanical equipment is a hydraulic valve, the sealed body 600 can be a hydraulic valve seat.

[0052] The contact force between the sealing sleeve 400 and the sealed body 600 and the sealed shaft 700 affects the sealing performance of the elastic energy storage seal structure between the sealed body 600 and the sealed shaft 700. Specifically, the greater the contact pressure between the sealing sleeve 400 and the sealed body 600 and the sealed shaft 700, the better the sealing performance of the elastic energy storage seal structure; conversely, the smaller the contact pressure between the sealing sleeve 400 and the sealed body 600 and the sealed shaft 700, the worse the sealing performance of the elastic energy storage seal structure.

[0053] The pressure self-tightening function of the elastic energy storage sealing structure can be understood as follows: the greater the pressure of the sealed fluid, the more significant the enhancement effect of the sealed fluid on the contact pressure between the sealing sleeve 400, the sealed body 600, and the sealed shaft 700, and the better the sealing performance of the elastic energy storage sealing structure.

[0054] As an indispensable component of the elastic energy storage seal structure, the annular spring 500 plays a significant role in the sealing performance of the elastic energy storage seal assembly. For example, the annular spring 500 can provide contact pressure in the circumferential direction to the sealing sleeve 400, which contacts the sealed body 600 and the sealed shaft 700, thereby enhancing the sealing performance of the elastic energy storage seal structure.

[0055] The structure of the ring spring 500 can be found in [reference]. Figure 2 As shown. See also Figure 2 As shown, due to the structural characteristics of the annular spring 500, its manufacture requires first processing straight springs of a specific length (linear springs), and then connecting the ends of the straight springs to form the annular spring 500. During connection, welding is generally used to securely connect the metal sheets at the ends of the straight springs, preventing loosening. The metal sheets can be steel strips or steel wires, etc. Since the annular spring 500 is welded from a straight spring, the ends must be accurately aligned during welding; otherwise, the roundness and circumferential dimensions of the annular spring 500 cannot be guaranteed, which will affect the performance of the spring's energy storage and sealing structure.

[0056] In existing circular springs 500, straight springs are typically held in place by a clamp 100 or manually during welding. The existing clamp 100 is usually a rigid clamp. Because straight springs are made of thin metal sheets, their structural stiffness is extremely low. Due to this low stiffness, if a straight spring is held in place by a rigid clamp 100, it is very prone to deformation. Therefore, currently, straight springs are typically held manually during welding.

[0057] While manually holding a straight spring can reduce its deformation, the instability of manual holding makes it difficult to guarantee the spring's stability during welding. This results in the annular spring 500 having poor structural and dimensional stability, leading to larger processing errors, lower yield, and higher costs.

[0058] To address this, this application provides a clamp comprising a first clamping body and at least two second clamping bodies. These second and first clamping bodies allow for flexible clamping of the elastic element in the circumferential direction of the first clamping body, replacing manual clamping. This prevents premature plastic deformation of the elastic element before welding while ensuring stable clamping. The first opening on each of the second clamping bodies facilitates welding of the head and tail ends of the clamped elastic element to form a ring-shaped elastic structure. Furthermore, the flexible clamping of the elastic element in the circumferential direction by the second and first clamping bodies effectively improves welding accuracy and stability, thereby enhancing the product quality of the ring-shaped elastic structure.

[0059] For example, the elastic element can be a straight spring, and the annular elastic structure formed by the elastic element can be an annular spring 500. It should be noted that the elastic element can also be other metal elastic elements that require welding at both ends. In this application, the structure of the elastic element is not particularly limited.

[0060] The structure of the clamp 100 will be further described below, taking the elastic element 200 as a straight spring as an example, in conjunction with the accompanying drawings and embodiments.

[0061] See Figure 3 As shown, the clamp 100 includes a first clamping body 10. The first clamping body 10 includes a first clamping member 11 and a first flexible member 12. The first flexible member 12 is disposed on the circumferential sidewall of the first clamping member 11, so that the first flexible member 12 is fixed on the circumferential sidewall of the first clamping member 11. The first flexible member 12 can be disposed on the circumferential sidewall of the first clamping member 11 by means of bonding or the like. Alternatively, the first flexible member 12 can also be integrally connected to the circumferential sidewall of the first clamping member 11 by means of injection molding or the like, which also enables the first flexible member 12 to be disposed on the circumferential sidewall of the first clamping member 11.

[0062] See also Figure 3The fixture 100 further includes at least two second clamping bodies 20. The at least two second clamping bodies 20 are sequentially arranged along the circumference of the first clamping member 11. The circumference of the first clamping member 11 can be understood as the circumferential direction of the first clamping member 11. Each second clamping body 20 includes a second clamping member 21 and a second flexible member 22. A second flexible member 22 is provided on the circumferential sidewall of each second clamping member 21. The circumferential direction of the second clamping member 21 can be understood as the circumferential direction of the second clamping member 21. Similar to the first flexible member 12, the second flexible member 22 can also be disposed on the circumferential sidewall of the second clamping member 21 by means of bonding, injection molding, etc.

[0063] See also Figure 3 The second clamping member 21 is fixed to the first clamping member 11 in the circumferential direction. That is, the second clamping member 21 is fixed relative to the first clamping member 11 in the circumferential direction.

[0064] See Figure 4 As shown, when the second clamping member 21 is disposed in the circumferential direction of the first clamping member 11, the second clamping member 21 can be fixed to the circumferential direction of the first clamping member 11 by the fixing member 300. For example, the fixing member 300 may include two fixing plates. One side of the fixing plate is provided with an arc-shaped opening. For ease of description, the two fixing plates are defined as the first fixing plate 310 and the second fixing plate 320. The first fixing plate 310 is disposed on the side of a portion of the second clamping member 21 away from the first clamping member 11, and the second clamping member 21 is engaged in the arc-shaped opening of the first fixing plate 310. The second fixing plate 320 is disposed on the side of the remaining second clamping member 21 away from the first clamping member 11, and the remaining second clamping member 21 is engaged in the arc-shaped opening of the second fixing plate 320. The first fixing plate 310 and the second fixing plate 320 can be fixedly connected on the side with the arc-shaped opening. The first fixing plate 310 and the second fixing plate 320 can constrain the position of the second clamping member 21, so that the second clamping member 21 is fixed to the circumference of the first clamping member 11. For example, the first fixing plate 310 and the second fixing plate 320 can be fixedly connected on the side with the arc-shaped opening by means of a latch (not shown in the figure).

[0065] It should be noted that the fastener 300 can also be a clamp or other fixing structure. By setting the clamp on the side of the second clamping member 21 away from the first clamping member 11, the position of the second clamping member 21 can also be constrained, so that the second clamping member 21 is fixed to the circumference of the first clamping member 11.

[0066] The second clamping member 21 and the first clamping member 11 form a cavity, and the side of the cavity away from the first clamping member 11 forms a first opening 30. The second flexible member 22 forms a flexible protective member. Since the second clamping member 21 is disposed in the circumference of the first clamping member 11, the cavity is formed in the circumference of the first clamping member 11.

[0067] The flexible protective member and the first flexible member 12 are radially opposite to each other in the first clamping member 11, and together they form a flexible clamping cavity 50 within the cavity. The flexible clamping cavity 50 is annular and is used to clamp the elastic member 200. The flexible protective member has a second opening 40 at the first opening 30, which connects the first opening 30 and the flexible clamping cavity 50. The second opening 40 ensures that the first opening 30 can communicate with the first clamping member 11 radially. The radial direction of the first clamping member 11 refers to the direction within the radial plane of the first clamping member 11 through the axis o1. For example, the radial direction of the first clamping member 11 can be, but is not limited to, the X direction.

[0068] It should be noted that the second flexible member 22 may be located on the circumferential sidewall of the second clamping member 21 facing the first flexible member 12, so that the second flexible member 22 is arranged opposite to the first flexible member 12 in the radial direction of the first clamping member 11, so as to facilitate the formation of the flexible clamping cavity 50.

[0069] This application, through the arrangement of a first clamping body 10 and at least two second clamping bodies 20 in the clamp 100, when the second clamping member 21 is in the fixed position, the second clamping member 21 and the first clamping member 11 form a cavity. The flexible protective member formed by the second flexible member 22 and the first flexible member 12 form a flexible clamping cavity 50 in the cavity. Furthermore, the flexible clamping cavity 50 is annular and is used to clamp the elastic member 200. Therefore, the elastic member 200 can be disposed in the flexible clamping cavity 50. The flexible protective member and the first flexible member 12 can replace the human hand to flexibly clamp the elastic member 200 on different sides of the radial direction of the first clamping member 11.

[0070] Since the flexible protective element and the first flexible element 12 flexibly clamp the elastic element 200, when the clamping force of the flexible protective element and the first flexible element 12 on the elastic element 200 is large, the deformation of the flexible protective element and the first flexible element 12 can be used to automatically adjust the large clamping force. Therefore, by flexibly clamping the elastic element 200 with the flexible protective element and the first flexible element 12, the plastic deformation of the elastic element 200 before welding can be avoided, while the stable clamping of the elastic element 200 is achieved.

[0071] See Figure 5As shown, since the flexible clamping cavity 50 is annular, when the elastic member 200 is disposed within the flexible clamping cavity 50, it can form an annular shape under the constraint of the flexible clamping cavity 50. Because the second opening 40 connects the first opening 30 to the flexible clamping cavity 50, when the elastic member 200 is located within the flexible clamping cavity 50, by adjusting the positions of the first end 210 and the tail end 220 of the elastic member 200, the first end 210 and the tail end 220 of the elastic member 200 can be aligned and exposed at the first opening 30. That is, from the outside of the clamp 100, the first end 210 and the tail end 220 of the elastic member 200 can be seen at the first opening 30. This allows for the flexible clamping of the elastic element 200 by the flexible protective element and the first flexible element 12 without affecting the overall flexible clamping, while facilitating the welding of the first end 210 and the tail end 220 of the elastic element 200 within the flexible clamping cavity 50 at the first opening 30. This enables the elastic element 200 to form a ring-shaped elastic structure after welding. The first opening 30 can form the welding opening of the clamp 100.

[0072] Therefore, the fixture 100 of this application, through the arrangement of the first clamping body 10 and the second clamping body 20, can overcome the defects caused by the manual clamping of the elastic element 200, ensure the stability of the elastic element 200 during the welding process, and make the ring elastic structure made by the fixture 100 of the application have better stability in structure and size, which can improve the yield of the ring elastic structure and reduce the manufacturing cost of the ring elastic structure.

[0073] When the elastic element 200 is clamped within the flexible clamping cavity 50, except for the portion of the elastic element 200 corresponding to the first opening 30, the first flexible element 12 in the central clamping body and the flexible protective element in the outer peripheral clamping body can achieve complete flexible clamping of the elastic element 200. Since the elastic element 200 is flexibly clamped by the first flexible element 12 and the flexible protective element except for the portion corresponding to the first opening 30, although the position of the elastic element 200 corresponding to the first opening 30 is not clamped, by controlling the size of the first opening 30, it is ensured that the position of the elastic element 200 corresponding to the first opening 30 will not undergo deformation or vibration, thus avoiding the problem of difficulty in ensuring the stability of the elastic element 200 during welding when clamped by hand. For example, without affecting the welding of the elastic element 200 at the first opening 30, the size of the first opening 30 can be controlled to be as small as possible, so as to avoid the first section and the tail end 220 of the elastic element 200 being too long exposed at the first opening 30, which would cause the elastic element 200 to not produce too much deformation at the first opening 30, thereby ensuring that the position of the elastic element 200 corresponding to the first opening 30 will not produce deformation and vibration.

[0074] It should be noted that when the elastic element 200 is made of a metal material with high rigidity, the size of the first opening 30 can be appropriately increased. However, it should be ensured that the position of the elastic element 200 corresponding to the first opening 30 will not be deformed or vibrated.

[0075] The first flexible element 12 can be made of a flexible material. When selecting the flexible material, it should have low stiffness, but sufficient stiffness to provide clamping force for the elastic element 200. For example, flexible materials can be, but are not limited to, flexible polymers such as polytetrafluoroethylene (PTFE), high-density polyethylene (HDPE), and polyetheretherketone (PEEK). Since the elastic element 200 may roll during twisting, the coefficient of friction on the side of the first flexible element 12 that contacts the elastic element 200 should be relatively high to prevent the elastic element 200 from twisting within the fixture 100 during welding.

[0076] See you again Figure 3 The flexible clamping cavity 50 can be annular in shape, so that the elastic element 200 can form an annular elastic structure after the first opening 30 is welded. Alternatively, the flexible clamping cavity 50 can also be configured to be non-annular in shape depending on the variation of the formed annular elastic structure. In this application, the shape of the flexible clamping cavity 50 is not particularly limited. The following description uses an annular flexible clamping cavity 50 as an example to further illustrate the structure of the clamp 100.

[0077] See you again Figure 3 The first clamping member 11 has a first arcuate surface 111 on its circumferential sidewall, and the second clamping member 21 has a second arcuate surface 211 on its side facing the first clamping member 11. The second arcuate surface 211 and the first arcuate surface 111 form a cavity, which is annular. The first flexible member 12 is an arcuate member whose shape is adapted to the first arcuate surface 111, and the second flexible member 22 is an arcuate member whose shape is adapted to the second arcuate surface 211. It should be noted that the "adaptation" described herein can be understood as the same or similar. For example, the first flexible member 12 is an arcuate member whose shape is adapted to the first arcuate surface 111, that is, the first flexible member 12 is an arcuate member whose shape is the same as or similar to the first arcuate surface 111. Since the first flexible member 12 is disposed on the circumferential sidewall of the first clamping member 11, and the second flexible member 22 is disposed on the side of the second clamping member 21 facing the first clamping member 11, the second flexible member 22 forms a flexible protective member. Therefore, when the cavity formed by the second arcuate surface 211 and the first arcuate surface 111 is annular, the flexible clamping cavity 50 formed by the flexible protective member and the first flexible member 12 is also annular.

[0078] Since the second clamping body 20 is disposed circumferentially on the first clamping body 10, the first clamping body 10 can be regarded as the central clamping body of the clamp 100, and each second clamping body 20 can form the outer peripheral clamping body of the clamp 100. The second clamping member 21 can be an arc-shaped member, and the outer peripheral clamping body formed by each second clamping member 21 is coaxially disposed with the first clamping body 10 to ensure that the cavity formed by the second arc-shaped surface 211 and the first arc-shaped surface 111 is annular.

[0079] It should be noted that the second clamping member 21 can also be a non-arc-shaped member, with the second arc-shaped surface 211 only provided on the side facing the first clamping member 11. In this case, the cavity formed by the second arc-shaped surface 211 and the first arc-shaped surface 111 is also annular. The structure of the clamp 100 will be further explained below with the example of the second clamping member 21 being an arc-shaped member.

[0080] See Figure 6 and Figure 7 As shown, the number of second clamping bodies 20 can be three. Two of the three second clamping bodies 20 can have the same size. The size of the second clamping body 20 can include the circumferential dimension of the second clamping body 20 in the outer peripheral clamping body. For example, two of the three second clamping bodies 20 can be quarter clamping bodies 20b in the outer peripheral clamping body, and the remaining second clamping body 20 is the half clamping body 20a in the outer peripheral clamping body.

[0081] It should be noted that the quarter-sized clamping body 20b occupies one-quarter of the circumference of the outer peripheral clamping body, and the central angle corresponding to the quarter-sized clamping body 20b is 90 degrees. Correspondingly, the half-sized clamping body 20a occupies one-half of the circumference of the outer peripheral clamping body, and the central angle corresponding to the half-sized clamping body 20a is 180 degrees.

[0082] Alternatively, the three second clamping bodies 20 can also be of the same size. In this case, the second clamping body 20 can be a three-part clamping body. Each second clamping body 20 occupies one-third of the circumference of the outer peripheral clamping body, and the corresponding central angle is 120 degrees.

[0083] Alternatively, the number of second clamping bodies 20 can be two, four, etc., so that the outer peripheral clamping body is a split clamping structure formed by at least two second clamping bodies 20. For example, when the number of second clamping bodies 20 is two, both second clamping bodies 20 can be two separate clamping bodies 20a.

[0084] The structure of the clamp 100 will be further explained below, taking the peripheral clamping body as an example, which includes a two-part clamping body 20a and two four-part clamping bodies 20b.

[0085] See also Figure 6 and Figure 7 Along the circumferential direction of the first clamping member 11, the adjacent sides of the adjacent second clamping members 21 can contact each other, so that there is no gap between the two second clamping members 21 in the outer peripheral clamping body formed by the second clamping members 21. This allows the adjacent sides of the two adjacent second clamping members 21 to contact each other when the second clamping members 21 are set on the second clamping member 21, thereby enhancing the clamping effect of the flexible protective member on the elastic member 200.

[0086] Along the circumferential direction of the first clamping member 11, at least a portion of adjacent second flexible members 22 are in contact with each other on adjacent sides to form a flexible protective member. The flexible protective member can be a flexible protective sleeve. That is, all adjacent second flexible members 22 in the outer peripheral clamping body can be in contact with each other on adjacent sides, or portions of adjacent second flexible members 22 in the outer peripheral clamping body can be in contact with each other on adjacent sides.

[0087] It should be noted that when all adjacent second flexible members 22 in the outer peripheral clamping body can contact each other on their adjacent sides, the adjacent sides of the two second flexible members 22 corresponding to the first opening 30 can partially contact each other, so that the formation of the second opening 40 can enhance the clamping effect of the flexible protective member on the elastic member 200.

[0088] When the portions of adjacent second flexible members 22 in the outer peripheral clamping body are in contact with each other on their adjacent sides, the adjacent sides of the two second flexible members 22 corresponding to the first opening 30 may not be in contact, so that while the second opening 40 is being formed, the adjacent sides of the other adjacent second flexible members 22 can be in contact with each other, which can also enhance the clamping effect of the flexible protective member on the elastic member 200.

[0089] It should be noted that, while ensuring that the second clamping member 21 is fixed to the circumference of the first clamping member 11, adjacent sides of adjacent second clamping members 21 may not contact each other, and adjacent second flexible members 22 may not contact each other on their adjacent sides. The structure of the clamp 100 will be further explained below using the example of adjacent sides of adjacent second clamping members 21 contacting each other on their adjacent sides in the circumference of the first clamping member 11, and all adjacent second flexible members 22 in the outer peripheral clamping body contacting each other on their adjacent sides.

[0090] See Figure 8 and combined Figure 3As shown, at least two second clamping bodies 20 have a first opening 30 between two adjacent second clamping bodies 20. For example, the first opening 30 can be provided between two quarter clamping bodies 20b. Each of the two quarter clamping bodies 20b has a first notch 212 on an adjacent side, and the two first notches 212 can form the first opening 30. The second opening 40 is arranged opposite to the first opening 30 in the radial direction of the first clamping member 11. Similarly, taking the first opening 30 as an example that it can be provided between two quarter clamping bodies 20b, the adjacent side of the second flexible member 22 on the two quarter clamping bodies 20b can be provided with a second notch, and the two second notches can form the second opening 40. Wherein, the second notch and the first notch 212 on the quarter clamping body 20b are arranged opposite to each other in the radial direction of the first clamping member 11 to ensure that the second opening 40 is arranged opposite to the first opening 30 in the radial direction of the first clamping member 11.

[0091] The second opening 40 is arranged radially opposite to the first opening 30 of the first clamping member 11. While ensuring that the second opening 40 connects the first opening 30 and the flexible clamping cavity 50, it allows more of the first section and the tail end 220 of the elastic member 200 to be exposed at the first opening 30 through the second opening 40 without changing the size of the first opening 30, so as to facilitate the welding of the first section and the tail end 220 of the elastic member 200 at the first opening 30.

[0092] See Figure 9 and Figure 10 As shown, the first clamping member 11 has a first side 112 and a second side 113 in the axial direction. The second clamping body 20 can be engaged with the first clamping body 10 on the first side 112 and has a gap between the second side 113 and the first clamping body 10, so that the cavity forms an annular opening at the gap. At least one of the first clamping member 11 and the second clamping member 21 extends towards each other on the second side 113, so that the clamp 100 forms a constriction at the annular opening.

[0093] Compared to the side of the cavity furthest from the annular opening, the constricted design results in a smaller size at the annular opening. This prevents the elastic element 200 from shifting when clamped by the first clamping body 10 and the second clamping body 20, ensuring the clamping capacity of the fixture 100 on the elastic element 200 and providing better stability for welding within the fixture 100. For example, when the cavity has a smaller size at the annular opening, it prevents the elastic element 200 from dislodging from the fixture 100 from the direction of the annular opening when clamped by the first clamping body 10 and the second clamping body 20.

[0094] Since the second clamping body 20 can be connected to the first clamping body 10 on the first side 112, the second clamping body 20 can apply force to the flexible protective member under the action of the fixing member 300, and the first clamping member 11 can apply force to the first flexible member 12 under the action of the fixing member 300, so as to better realize the flexible clamping of the elastic member 200 by the first flexible member 12 and the flexible protective member.

[0095] The second clamping body 20 can be connected to the first clamping body 10 on the first side 112, which can be understood as the second clamping body 20 being in contact with the first clamping body 10 on the first side 112.

[0096] It should be noted that, while ensuring that the first flexible member 12 and the flexible protective member can flexibly clamp the elastic member 200, the first clamping body 10 can also have a gap between itself and the second clamping body 20 on its first side 112. That is, the first clamping member 11 can be in contact with the second clamping member 21 on its first side 112. The structure of the clamp 100 will be further explained below, taking the example that the second clamping body 20 can be connected with the first clamping body 10 on its first side 112.

[0097] See Figure 11 As shown, the second clamping member 21 contacts the first clamping member 11 on the first side 112 in the radial direction, so as to realize the mating connection between the second clamping body 20 and the first clamping body 10 on the first side 112. Both the flexible protective member and the first flexible member 12 can be located in the cavity, so that the flexible protective member and the first flexible member 12 form a flexible clamping cavity 50 in the cavity.

[0098] See also Figure 11 The flexible protective member and the first flexible member 12 can contact each other on the first side 112 in the radial direction of the first clamping member 11, so that the flexible protective member and the first flexible member 12 can support the side of the elastic member 200 away from the annular opening, thereby enhancing the stability of the elastic member 200 within the clamp 100. At the same time, it can also achieve the mating connection between the second clamping body 20 and the first clamping body 10 on the first side 112. At this time, the second flexible member 22 can completely cover the second arcuate surface 211 of the second clamping member 21, or, based on the fact that the flexible protective member and the first flexible member 12 can contact each other on the first side 112 in the radial direction of the first clamping member 11, the second flexible member 22 can also cover part of the second arcuate surface 211.

[0099] See Figure 12As shown, the second flexible member 22 extends to the outside of the cavity and contacts the first flexible member 12 on the first side 112 in the radial direction of the first clamping member 11, so that the side of the elastic member 200 away from the annular opening is supported by the flexible protective member and the first flexible member 12, thereby enhancing the stability of the elastic member 200 in the clamp 100 and enabling the second clamping body 20 to be connected with the first clamping body 10 on the first side 112.

[0100] See also Figure 12 When the second flexible member 22 extends to the outside of the cavity, the first flexible member 12 also extends to the outside of the cavity, so that the second flexible member 22 and the first flexible member 12 come into contact with each other on the first side 112. At this time, the second flexible member 22 can completely cover the second arcuate surface 211 of the second clamping member 21, and the first flexible member 12 can completely cover the first arcuate surface 111 of the first clamping member 11.

[0101] Or see Figure 13 As shown, the second flexible member 22 may include at least two second flexible portions 221, which are spaced apart along the axial direction of the first clamping member 11. The first flexible member 12 also has at least two first flexible portions 121, the number of which corresponds to the number of second flexible portions 221. That is, the first flexible member 12 also has a first flexible portion 121 at the position corresponding to the second flexible portion 221. By providing the first flexible portions 121 and the second flexible portions 221, the flexible clamping effect on the elastic member 200 can also be achieved.

[0102] The following section will further explain how to use the fixture 100.

[0103] See you again Figure 5 When it is necessary to weld the elastic element 200, the elastic element 200 is first placed on the first flexible element 12 of the first clamping body 10, and then each second clamping body 20 is fixed in the circumferential direction of the first clamping body 10 according to the assembly sequence to form an outer peripheral clamping body.

[0104] The assembly sequence of each second clamping body 20 on the first clamping body 10 is as follows:

[0105] 1) The bipartite clamping body 20a in the outer peripheral clamping body is set in the circumferential direction of the first clamping body 10. Under the action of the first flexible member 12 and the second flexible member 22 in the bipartite clamping body 20a, the elastic member 200 can be flexibly clamped. At this time, the clamped elastic member 200 becomes a semi-circular shape (half a ring) under the constraint of the bipartite clamping body 20a and the first clamping body 10.

[0106] 2) The two quarter clamping bodies 20b in the outer peripheral clamping body are arranged sequentially or together in the circumferential direction of the first clamping body 10 to form an outer peripheral clamping body, so that each second flexible member 22 in the outer peripheral clamping body forms a flexible protective member.

[0107] 3) Fix each second clamping body 20 to the circumference of the first clamping body 10 using the fastener 300, and achieve flexible clamping of the elastic member 200 through the flexible protective member and the first flexible member 12, so that the first end 210 and the tail end 220 of the elastic member 200 can be welded at the first notch 212 to obtain an annular elastic structure.

[0108] After welding is completed, the second clamping body 20 can be released from the circumferential fixation of the first clamping body 10 in the reverse order of the above assembly sequence to facilitate welding of the next elastic element 200.

[0109] It should be noted that by adjusting the dimensions of the first clamping member 11, the diameter of the manufactured annular elastic structure can be changed, thereby achieving precise control over the diameter of the annular elastic structure and significantly improving its structural stability. In other words, when manufacturing annular elastic structures of different diameters, first clamping members 11 of different sizes can be used. For example, when the required diameter of the annular elastic structure increases, smaller-sized first clamping members 10 and second clamping members 20 can be used to achieve flexible clamping of the elastic member 200. Conversely, when the required diameter of the annular elastic structure decreases, larger-sized first clamping members 10 and second clamping members 20 can be used to achieve flexible clamping of the elastic member 200.

[0110] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0111] In the description of this application, it should be understood that the terms “comprising” and “having” as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, display structure, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are expressly listed, but may include other steps or units that are not expressly listed or that are inherent to such process, method, product, or device.

[0112] The term "and / or" used in this application is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0113] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0114] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A clamp, characterized in that, include: The first clamping body includes a first clamping member and a first flexible member; the first flexible member is disposed on the circumferential sidewall of the first clamping member; At least two second clamping bodies are sequentially arranged along the circumference of the first clamping member; each second clamping body includes a second clamping member and a second flexible member, the second flexible member being disposed on the circumferential sidewall of the second clamping member, and the second clamping member being fixed to the circumference of the first clamping member; the second clamping member and the first clamping member form a cavity, the cavity forming a first opening on the side away from the first clamping member, and the second flexible member forming a flexible protective member; the flexible protective member and the first flexible member are arranged opposite to each other in the radial direction of the first clamping member, and together with the first flexible member, form a flexible clamping cavity within the cavity; the flexible clamping cavity is annular and used to clamp an elastic member, and the flexible protective member has a second opening at the first opening, the second opening being used to connect the first opening and the flexible clamping cavity; The first clamping member has a first side and a second side in the axial direction, the second clamping body is engaged with the first clamping body on the first side, and there is a gap between the second side and the first clamping body, so that the cavity forms an annular opening at the gap; At least one of the first clamping member and the second clamping member extends toward each other on the second side.

2. The clamp according to claim 1, characterized in that, Along the circumferential direction of the first clamping member, adjacent faces of adjacent second clamping members are in contact with each other, and at least a portion of adjacent second flexible members are in contact with each other on adjacent faces to form the flexible protective member.

3. The clamp according to claim 2, characterized in that, Each of the second clamping members is in radial contact with the first clamping member on the first side, and both the flexible protective member and the first flexible member are located within the cavity.

4. The clamp according to claim 3, characterized in that, The flexible protective member is in contact with the first flexible member on the first side in the radial direction of the first clamping member.

5. The clamp according to claim 2, characterized in that, The second flexible member extends to the outside of the cavity and contacts the first flexible member on the first side in the radial direction of the first clamping member.

6. The clamp according to any one of claims 1 to 5, characterized in that, The flexible clamping cavity is annular in shape.

7. The clamp according to claim 6, characterized in that, The first clamping member has a first arc-shaped surface on its circumferential sidewall, and the second clamping member has a second arc-shaped surface on the side facing the first clamping member. The second arc-shaped surface and the first arc-shaped surface form the cavity, which is an annulus. The first flexible component is an arc-shaped component that adapts to the shape of the first arc-shaped surface, and the second flexible component is an arc-shaped component that adapts to the shape of the second arc-shaped surface.

8. The clamp according to any one of claims 1 to 5, characterized in that, The at least two second clamping bodies have the first opening between two adjacent second clamping bodies, and the second opening is arranged opposite to the first opening in the radial direction of the first clamping body.

9. The clamp according to any one of claims 1 to 5, characterized in that, The number of the second clamping bodies is three, and two of the three second clamping bodies are of the same size.

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