Bending tool

Abstract

The invention provides a bending tool. The bending tool is used for bending a catheter and comprises a handle and a plurality of supporting pieces arranged on the handle. The multiple supporting pieces comprise multiple pairs of supporting pieces, each pair of supporting pieces comprises any two adjacent supporting pieces, and each supporting piece is at least provided with a section of cambered surface used for being matched with the outer side wall of the guide pipe; the multiple pairs of supporting pieces comprise at least one of the following items: the distances between the at least two pairs of supporting pieces are equal; the at least two pairs of support shafts have unequal intervals and are configured to configure conduits with different outer diameters. When the catheter is bent, the handle is rotated, the catheter is made to rotate with any one of the two supporting pieces forming a pair as a supporting rotating point according to the lever principle, and therefore the catheter is bent or finely adjusted, operation is convenient, force application is more convenient in a narrow space, the bending efficiency is effectively improved, and the labor intensity of workers is lowered. And the distances between the at least two pairs of supporting pieces are designed to be different, so that the bending device is suitable for bending conduits with different outer diameters in a narrow space.

Description

Technical Field

[0001] The present application relates to the technical field of hand tools, and in particular, to a bending tool. Background Art

[0002] In the power system of rocket launch, metal tubes are often used to transport fuel and other propellants. A power system will be equipped with dozens to hundreds of tubes, and the tubes need to be partially bent or fine-tuned during the assembly process.

[0003] The general adjustment method now is manual adjustment, which is not only time-consuming and labor-intensive, resulting in reduced adjustment efficiency; moreover, for some relatively narrow spaces, the movement of human hands in the narrow space is restricted, making it difficult to operate. Summary of the invention

[0004] In view of the shortcomings of the existing methods, the present application proposes a bending space to solve the technical problems in the related art that manual adjustment is time-consuming and labor-intensive, and the manual movement of people is limited in a narrow space, thereby reducing the adjustment efficiency.

[0005] The embodiment of the present application provides a bending tool for bending a catheter, comprising a handle and a plurality of support members arranged on the handle; The plurality of support members include a plurality of pairs of support members, each pair of support members includes any two adjacent support members, and the support members have at least one arc surface for cooperating with the outer side wall of the conduit; The plurality of pairs of support members include at least one of the following: The spacings between at least two pairs of the support members are equal; The spacings between at least two pairs of the support shafts are unequal and the support shafts are configured to be equipped with catheters with different outer diameters.

[0006] Optionally, in at least two pairs of the support members with equal spacing, the extension angles of the bending spaces between each pair of the support members are different, so as to bend the conduits with different angles and equal outer diameters.

[0007] Optionally, the plurality of support members include a first support member and a second support member constituting a pair of the support members; The first support member and the second support member are evenly spaced along the extension direction of the handle and along the first direction, and the first direction is perpendicular to the extension direction of the handle; A first curved space is formed between the first support member and the second support member. The first curved space is used for the conduit to pass through along the first direction and is sandwiched between the first support member and the second support member.

[0008] Optionally, along the first direction, the first support member is arranged at the center of one end of the handle, and the second support member is arranged on an outer side wall of the handle.

[0009] Optionally, the plurality of support members further include a third support member forming a pair of support members with the second support member, The third support member and the second support member are evenly spaced apart along the first direction and along the extending direction of the handle; A second curved space is formed between the third support member and the second support member. The second curved space is used for the catheter to pass through along a second direction and is sandwiched between the third support member and the second support member. The second direction intersects with the handle.

[0010] Optionally, the second support member and the third support member are respectively arranged on two outer side walls of the handle; or, The second support member is arranged on the outer side wall of the handle, and the third support member is penetrated in the handle.

[0011] Optionally, a protective cover is provided on the outer peripheral wall of the support member.

[0012] Optionally, the support member includes a core shaft and a main body shaft arranged around the outer peripheral walls at both ends of the core shaft, the core shaft and the handle are locked by a locking member, and the protective sleeve is wrapped around the outer peripheral wall of the main body shaft.

[0013] Optionally, the support members are all cylindrical, and the outer diameters of the support members are consistent.

[0014] Optionally, each of the support members is perpendicular to the plane where the handle is located.

[0015] The beneficial technical effects brought about by the technical solution provided by the embodiment of the present application include: a space (i.e., bending space) for clamping the catheter is formed between the two supporting members constituting a pair. When bending, the handle is turned, and the principle of lever is used to make the catheter rotate with any one of the two supporting members constituting a pair as a supporting point, so as to bend the catheter or fine-tune the curvature of the catheter. The operation is convenient, and it is more time-saving and labor-saving when bending, and the bending efficiency is effectively improved. Moreover, the bending tool of the present application is small in size and can bend the catheter in a small space. By designing that the spacing between at least two pairs of supporting members is unequal, the catheter to be bent can be placed in the space between a pair of supporting members that matches its outer diameter according to the outer diameter of the catheter to be bent, so as to adapt to bending catheters of different outer diameters in a small space.

[0016] Additional aspects and advantages of the present application will be partially given in the following description, which will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which: Figure 1 A structural schematic diagram of a bending tool provided in an embodiment of the present application; Figure 2 A schematic diagram of a top view of a bending tool provided in an embodiment of the present application; Figure 3 A schematic diagram of the structure of a bending tool provided in an embodiment of the present application that can adapt to catheters with different outer diameters; Figure 4 A schematic diagram of the principle of bending a catheter using a bending tool provided in an embodiment of the present application.

[0018] Description of Reference Numerals 1-handle; 11-guide groove; 2-support member; 21-first support member; 22-second support member; 23-third support member; 24-core shaft; 25-main shaft; 26-first bending space; 27-second bending space; 3-protective cover; 4-locking piece; 5 - catheter; 51 - first catheter; 52 - fourth catheter. DETAILED DESCRIPTION

[0019] The embodiments of the present application are described below in conjunction with the drawings in the present application. It should be understood that the implementation methods described below in conjunction with the drawings are exemplary descriptions for explaining the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions of the embodiments of the present application.

[0020] It will be understood by those skilled in the art that, unless otherwise stated, the "said" and "the" used herein may also include plural forms. It should be further understood that the term "including" used in the specification of the present application refers to the presence of the features, elements and / or components, but does not exclude the implementation of other features, elements, components and / or their combinations supported by the technical field. The term "and / or" used herein refers to at least one of the items defined by the term, for example, "A and / or B" can be implemented as "A", or as "B", or as "A and B".

[0021] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0022] In order to solve the technical problems that manual adjustment is time-consuming and laborious, and the manual movement is limited in a narrow space, and the adjustment efficiency is low, refer to Figure 1-Figure 4The embodiment of the present application provides a bending tool. The bending tool is used to bend a catheter 5 and includes a handle 1 and a plurality of support members 2 arranged on the handle 1 .

[0023] The plurality of support members 2 include a plurality of pairs of support members 2 , each pair of support members 2 includes any two adjacent support members 2 , and the support members 2 have at least one arc surface for cooperating with the outer side wall of the conduit 5 .

[0024] The plurality of pairs of support members 2 include at least one of the following: The spacings between at least two pairs of support members 2 are equal; The spacings between at least two pairs of support shafts are unequal and are configured to accommodate catheters 5 with different outer diameters.

[0025] In the present application, a space (i.e., a bending space) for clamping the catheter 5 is formed between the two supporting members 2 constituting a pair. When bending, the handle 1 is turned, and the catheter 5 is rotated with any one of the two supporting members 2 constituting a pair as a supporting rotation point by using the principle of a lever, so that the catheter 5 is bent or the curvature of the catheter is finely adjusted, which is convenient to operate and saves time and effort when bending. The bending tool of the present application is small in size and can be used to bend the catheter 5 in a small space. When the bending tool of the present application is used to bend the catheter 5, it is easier to apply force in a small space, and the bending efficiency is effectively improved.

[0026] The unequal spacing between the at least two pairs of support members 2 mentioned above can be understood as the radial spacing (or horizontal spacing) between at least one pair of support members 2 being unequal to the radial spacing (or horizontal spacing) between at least another pair of support members 2, and can also be understood as the radial spacing between at least one pair of support members 2 being unequal to the horizontal spacing between at least another pair of support members 2.

[0027] By designing the spacing between at least two pairs of support members 2 to be unequal, the catheter 5 to be bent can be placed in the space between a pair of support members 2 that matches the outer diameter of the catheter 5 to be bent, thereby adapting to bending catheters 5 with different outer diameters in a narrow space.

[0028] The spacing between the above-mentioned pair of support members 2 can be interpreted as the radial spacing between the two support members 2, or as the spacing (or horizontal spacing) parallel to the extension direction of the handle 1. The equal spacing between at least two pairs of support members 2 can be understood as the radial spacing (or horizontal spacing) between at least one pair of support members 2 being equal to the radial spacing (or horizontal spacing) between at least another pair of support members 2, or can be understood as the radial spacing between at least one pair of support members 2 being equal to the horizontal spacing between at least another pair of support members 2, so that the catheter 5 of the same root or the same outer diameter can be clamped between the same pair of support members 2 at different angles.

[0029] Optionally, refer to Figure 3-Figure 4 In at least two pairs of support members 2 with equal spacing, the extension angle of the bending space between each pair of support members 2 is different, which is used to bend catheters 5 with different angles and equal outer diameters.

[0030] In other words, when the spacing between at least two pairs of support members 2 is equal, the catheter 5 can be clamped between at least one pair of two support members 2 in a direction perpendicular to or parallel to the extension direction of the handle 1; or the catheter 5 can be clamped between at least one pair of two support members 2 in a direction oblique to the extension direction of the handle 1. Thus, the catheter 5 of the same length or the same outer diameter can be clamped between the same pair of support members 2 at different angles, enriching the use scenarios of the bending tool of the present application, so that the bending tool of the present application is more suitable for use in narrow spaces.

[0031] Optionally, the plurality of support members 2 include a first support member 21 and a second support member 22 constituting a pair of support members 2 .

[0032] The first support member 21 and the second support member 22 are evenly spaced apart along the extension direction of the handle 1 and along the first direction, and the first direction is perpendicular to the extension direction of the handle 1 .

[0033] A first curved space 26 is formed between the first support member 21 and the second support member 22 . The first curved space 26 is used for the conduit 5 to pass through along the first direction and is sandwiched between the first support member 21 and the second support member 22 .

[0034] The first bending space 26 formed between the first support member 21 and the second support member 22 includes a space for the first conduit 51 to be clamped between the first support member 21 and the second support member 22 along an angle parallel to the first direction, and also includes a space for the second conduit (not shown in the figure) to be clamped between the first support member 21 and the second support member 22 along an angle inclined to the first direction, and also includes a space for the third conduit (not shown in the figure) to be clamped between the first support member 21 and the second support member 22 along an angle perpendicular to the first direction. It should be noted that the first conduit 51, the second conduit and the third conduit are conduits with different outer diameters. In other words, conduits 5 with different outer diameters can be clamped between the same pair of support members 2 at different angles, thereby effectively improving the flexibility of the bending tool of the present application in a narrow space, thereby effectively improving the efficiency of bending or fine-tuning the conduit.

[0035] Optionally, refer to Figure 1-Figure 4 , along the first direction, the first support member 21 is arranged at the center of one end of the handle 1. The second support member 22 is arranged on an outer side wall of the handle 1.

[0036] The first support member 21 is arranged at the center of one end of the handle 1 so that the catheter 5 is sandwiched between the first support member 21 and the second support member 22 along the first direction.

[0037] The first support member 21 and the second support member 22 can be rotatably arranged on the handle 1. When the catheter 5 is arranged between the first support member 21 and the second support member 22 along the tangent direction (horizontally tangent or radially tangent) of the first support member 21 and the second support member 22, due to the friction resistance between the first support member 21, the second support member 22 and the catheter 5, the first support member 21 and the second support member 22 no longer rotate, and as the catheter 5 is bent, a support member 2 as a bending axis can be adaptively rotated, so that the catheter 5 can be bent with less force. The first support member 21 and the second support member 22 can be fixedly arranged on the handle 1, so as to ensure the bending strength of the bending tool of the present application.

[0038] Optionally, refer to Figure 3-Figure 4 The plurality of support members 2 further include a third support member 23 which forms a pair of support members 2 with the second support member 22 .

[0039] The third support member 23 and the second support member 22 are evenly spaced apart along the first direction and along the extending direction of the handle 1 .

[0040] A second curved space 27 is formed between the third support member 23 and the second support member 22 . The second curved space 27 is used for the catheter 5 to pass through along a second direction and is sandwiched between the third support member 23 and the second support member 22 . The second direction intersects with the handle 1 .

[0041] Optionally, the second bending space 27 includes a space for the fourth conduit 52 to be clamped between the second support member 22 and the third support member 23 along the second direction, and also includes a space for the fifth conduit (not shown in the figure) to be clamped between the second support member 22 and the third support member 23 along the extension direction of the handle 1, and also includes a space for the sixth conduit (not shown in the figure) to be clamped between the second support member 22 and the third support member 23 along the first direction. It should be noted that the fourth conduit 52, the fifth conduit and the sixth conduit are conduits with different outer diameters. In other words, conduits 5 with different outer diameters can be clamped between the same pair of support members 2 at different angles.

[0042] And, optionally, the radial spacing between the first support member 21 and the second support member 22 is different from the radial spacing between the second support member 22 and the third support member 23, and the catheters 5 with different outer diameters can pass through the first bending space 26 or the second bending space 27 that matches it, so as to adapt to the bending of catheters 5 with different outer diameters and different angles, thereby providing more bending schemes for catheters 5 with different angles and different outer diameters in a narrow space, greatly improving the bending efficiency.

[0043] Optionally, refer to Figure 3-Figure 4The second support member 22 and the third support member 23 can be arranged on two outer side walls of the handle 1 respectively. Alternatively, the second support member 22 is arranged on the outer side wall of the handle 1, and the third support member 23 is penetrated in the handle 1.

[0044] Optionally, refer to Figure 2 , each support member 2 is provided with a protective cover 3 on its exterior. The protective cover 3 can be made of rubber or plastic material, thereby preventing the pipeline from being bumped or scratched and protecting the pipeline.

[0045] Optionally, refer to Figure 2 The support member 2 includes a core shaft 24 and a main body shaft 25 arranged around the outer peripheral walls at both ends of the core shaft 24. The core shaft 24 and the handle 1 are locked by a locking member 4.

[0046] The core shaft 24 and the handle 1 are first locked by the locking member 4 to achieve an initial positioning effect. After the position of each support member 2 is determined, the core shaft 24 of each support member 2 is welded to the handle 1.

[0047] Optionally, the locking member 4 uses a bolt. When fixing, the bolt is passed through the handle 1 and the core shaft 24, and is locked with a nut to achieve fixation, which not only ensures the stability of the installation, but also improves the installation efficiency.

[0048] Optionally, refer to Figure 2 The protective sleeve 3 is wound around the outer peripheral wall of the main shaft 25, and the protective sleeve 3 is not arranged on the core shaft 24, so as to further save costs.

[0049] Optionally, refer to Figure 2 A guide groove 11 is provided on the handle 1 along its extension direction. At least a part of the locking member 4 passes through the core shaft 24 and is fixed in the guide groove 11 and can slide along the guide groove 11, so as to facilitate the adjustment of the position of the support member 2 according to actual needs.

[0050] The shape of the support member 2 can be set according to actual needs. It only needs to ensure that each support member 2 has at least one arc surface for matching with the outer wall of the conduit 5, and the rest can be processed into any shape. Optionally, for ease of processing, each support member 2 is cylindrical, and the outer diameters of each support member 2 are consistent. In another embodiment, each support member 2 is cylindrical, but the outer diameters of the support members 2 are set to be inconsistent. In another embodiment, in order to adapt to the use in a small space, the part of the support member 2 other than the arc surface can be designed to be square.

[0051] Optionally, refer to Figure 2 , each support member 2 extends along a third direction, and each support member 2 is arranged in parallel. The third direction is perpendicular to the first direction and the extending direction of the handle 1.

[0052] Optionally, refer to Figure 2, each support member 2 is perpendicular to the plane where the handle 1 is located, so that it is easier for the bending tool of the present application to apply force in a narrow space, so as to more smoothly complete the bending or fine-tuning of the catheter 5, thereby improving the efficiency of the bending or fine-tuning. In another optional embodiment, each support member 2 is inclined to the plane where the handle 1 is located.

[0053] In order to adapt to use in a small space, the bending tool of the present application needs to reduce the volume and size as much as possible while ensuring that it is easy to hold. Optionally, the length of the handle 1 of the present application is 180~220mm (millimeter). In the present application, the length of the handle 1 is 200mm (millimeter) as an example for explanation. In addition, along the first direction of the present application, the spacing between the outer side of the second support member 22 and the outer side of the third support member 23 is 50~54mm (millimeter). In the present application, the spacing between the outer side of the second support member 22 and the outer side of the third support member 23 is 52mm (millimeter) as an example for explanation.

[0054] The beneficial technical effects brought about by the technical solution provided by the embodiment of the present application include: A space for clamping the catheter 5 is formed between the two supporting members 2 constituting a pair. When bending, the handle 1 is turned, and the catheter 5 is rotated by using the lever principle with any one of the two supporting members 2 constituting a pair as the supporting rotation point, so that the catheter 5 is bent or the curvature of the catheter is fine-tuned. The operation is convenient, and it is more time-saving and labor-saving when bending, and the bending efficiency is effectively improved. Moreover, the bending tool of the present application is small in size and can be used to bend the catheter 5 in a small space. When the catheter 5 is bent using the bending tool of the present application, it is easier to apply force in a small space, and the bending efficiency is effectively improved.

[0055] By designing the spacing between at least two pairs of support members 2 to be unequal, the catheter 5 to be bent can be placed in the space between a pair of support members 2 that matches the outer diameter of the catheter 5 to be bent, thereby adapting to bending catheters 5 with different outer diameters in a narrow space.

[0056] By designing the spacing between at least two pairs of support members 2 to be equal or unequal, the conduits 5 with different outer diameters can pass through the matching first bending space 26 or second bending space 27 at a suitable angle, thereby adapting to the bending of conduits 5 with different outer diameters and angles, thereby providing more bending schemes for conduits 5 with different angles and outer diameters in a small space, greatly improving the bending efficiency.

[0057] In the description of the present application, the directions or positional relationships indicated by words such as "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the exemplary directions or positional relationships shown in the accompanying drawings. They are for the convenience of describing or simplifying the description of the embodiments of the present application, and do not indicate or imply that the referred device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0058] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0059] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0060] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0061] The above is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the technical concept of the scheme of the present application, other similar implementation methods based on the technical ideas of the present application are also within the protection scope of the embodiments of the present application.

Claims

1. A bending tool, characterized in that: Used for bending a catheter, comprising a handle and a plurality of support members arranged on the handle; The plurality of support members include a plurality of pairs of support members, each pair of support members includes any two adjacent support members, and the support members have at least one arc surface for cooperating with the outer side wall of the conduit; The plurality of pairs of support members include at least one of the following: The spacings between at least two pairs of the support members are equal; The spacings between at least two pairs of the support shafts are unequal and the support shafts are configured to be equipped with catheters with different outer diameters.

2. The bending tool according to claim 1, characterized in that In at least two pairs of the support members with equal spacing, the extension angles of the bending spaces between the support members of each pair are different, so as to bend the conduits with different angles and equal outer diameters.

3. The bending tool according to claim 2, characterized in that The plurality of support members include a first support member and a second support member constituting a pair of the support members; The first support member and the second support member are evenly spaced along the extension direction of the handle and along the first direction, and the first direction is perpendicular to the extension direction of the handle; A first curved space is formed between the first support member and the second support member. The first curved space is used for the conduit to pass through along the first direction and is sandwiched between the first support member and the second support member.

4. The bending tool according to claim 3, characterized in that: Along the first direction, the first support member is arranged at the center of one end of the handle, and the second support member is arranged on an outer side wall of the handle.

5. The bending tool according to claim 3, characterized in that: The plurality of support members further comprises a third support member forming a pair of support members with the second support member; The third support member and the second support member are evenly spaced apart along the first direction and along the extending direction of the handle; A second curved space is formed between the third support member and the second support member. The second curved space is used for the catheter to pass through along a second direction and is sandwiched between the third support member and the second support member. The second direction intersects with the handle.

6. The bending tool according to claim 5, characterized in that The second support member and the third support member are respectively arranged on two outer side walls of the handle; or, The second support member is arranged on the outer side wall of the handle, and the third support member is penetrated in the handle.

7. The bending tool according to claim 1, characterized in that: A protective cover is arranged on the outer peripheral wall of the support member.

8. The bending tool according to claim 7, characterized in that The support member comprises a core shaft and a main body shaft arranged around the outer peripheral walls at both ends of the core shaft, the core shaft and the handle are locked by a locking member, and the protective sleeve is wound around the outer peripheral wall of the main body shaft.

9. The bending tool according to claim 1, characterized in that: The support members are all cylindrical, and the outer diameters of the support members are consistent.

10. The bending tool according to claim 1, characterized in that Each of the support members is perpendicular to the plane where the handle is located.

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