Hardness detection tool for insertion tube

Abstract

The utility model discloses a hardness detection frock of insert pipe, include: base, insert pipe pressure device, including fixed on the support arm of base and fixed on the pressure assembly of support arm, pressure assembly is equipped with the insert pipe passageway of insert pipe, and pressure assembly is used for the pressure of insert pipe in the insert pipe passageway, measuring device, including the scale support of sliding connection on base and the scale of connection on scale support, the sliding direction of scale support and the length extension direction of insert pipe passageway are parallel, and the scale line on scale is along height direction setting. This hardness detection frock of insert pipe can realize the standardization of insert pipe hardness, fast measurement, better guarantee the consistency of the hardness of multiple insert pipes, improve insert pipe hardness measurement efficiency, and whole hardness detection frock simple structure, the production cost is low.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a tooling for testing the hardness of an insertion tube. Background Technology

[0002] In the field of medical devices, insertion tubes are components that need to enter the human body and must maintain a certain degree of rigidity. After assembly, variations in materials and assembly processes can cause fluctuations in the rigidity of the insertion tube. Therefore, it is essential to ensure that the rigidity of the final product is controllable to guarantee product consistency.

[0003] In existing technologies, the hardness of the insertion tube is judged by observing its drooping height when picked up by hand, and by sensory judgment to determine whether the hardness is within a controllable deviation range. However, this method of judging the hardness of the insertion tube by senses makes it difficult to guarantee the consistency of the hardness, resulting in uncontrollable hardness. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the defect that the existing methods for judging the hardness of insertion tubes are difficult to accurately judge the hardness of insertion tubes, thereby providing a tooling for testing the hardness of insertion tubes.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] A hardness testing fixture for an insertion tube, comprising:

[0007] Base;

[0008] An insertion tube clamping device includes a support arm fixed on the base and a clamping assembly fixed on the support arm; the clamping assembly is provided with an insertion tube channel for the insertion tube to pass through, and the clamping assembly is used to clamp the insertion tube located in the insertion tube channel;

[0009] The measuring device includes a scale bracket slidably connected to the base and a scale connected to the scale bracket; the sliding direction of the scale bracket is parallel to the length extension direction of the insertion tube channel, and the scale lines on the scale are set along the height direction.

[0010] Furthermore, the base is provided with a guide rail, and the scale bracket is slidably connected to the guide rail. The guiding direction of the guide rail is parallel to the length extension direction of the insertion tube channel. The guide rail is provided with limiting members at both ends of the guiding direction, and the limiting members are used to prevent the scale bracket from sliding out of the guide rail.

[0011] Furthermore, the length of the portion of the guide rail located between the two limiting members is not less than 200mm.

[0012] Furthermore, multiple guide rails are arranged in parallel, and the scale bracket includes a bracket base plate slidably connected to the multiple guide rails and a bracket vertical plate fixed to the bracket base plate. The scale is fixed to the bracket vertical plate, and the bracket base plate is provided with a locking member for locking the bracket base plate to the guide rails.

[0013] Furthermore, the support vertical plate is provided with a groove arranged in the vertical direction, the groove opening is located on the side wall of the support vertical plate, and the scale is arranged in the groove; the support vertical plate is fixed with a clamping piece blocking the groove opening, and the side of the scale facing the groove opening is pressed by the clamping piece.

[0014] Furthermore, the orthographic projection of the insertion tube channel and the insertion tube on the base is located in front of the orthographic projection of the support vertical plate on the base; wherein, the front side is the side on the scale line that is observed.

[0015] Furthermore, the clamping assembly includes a support base fixed on the support arm and a pressure plate covering the support base; the support base is provided with a lower positioning groove for placing the insertion tube, and the pressure plate is provided with an upper positioning groove corresponding to the position of the lower positioning groove. The upper positioning groove and the lower positioning groove cooperate to form the insertion tube channel, and the pressure plate and the support base are used to cooperate to clamp the insertion tube located in the insertion tube channel.

[0016] Furthermore, the clamping assembly also includes a clamping structure for driving the pressure plate downward to clamp the insertion tube located within the insertion tube channel.

[0017] Furthermore, the pressing structure includes a first magnet disposed on the support base and a second magnet disposed on the pressure plate. The first magnet and the second magnet attract each other to cause the pressure plate to press down on the insertion tube located in the insertion tube channel.

[0018] Furthermore, the lower positioning groove and / or the upper positioning groove are V-shaped grooves.

[0019] Furthermore, a positioning structure is provided between the support base and the pressure plate to achieve the positioning of the two.

[0020] Furthermore, both the support base and the pressure plate are made of plastic.

[0021] This utility model's technical solution has the following advantages: When measuring the hardness of an insert tube, this insert tube hardness testing fixture first moves the scale support to the side away from the support arm; then, the insert tube is placed in the insert tube channel of the clamping assembly, which clamps a portion of the insert tube, allowing the un-clamped portion to hang down naturally; then, the scale support is moved to the lowest hanging position of the insert tube, and the height of the hanging portion is read through the scale lines on the scale, thus measuring the hardness of the insert tube. This insert tube hardness testing fixture enables standardized and rapid measurement of insert tube hardness, better ensuring the consistency of hardness across multiple insert tubes and improving the efficiency of insert tube hardness measurement; moreover, the entire hardness testing fixture has a simple structure and low manufacturing cost. Attached Figure Description

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

[0023] Figure 1 This is a three-dimensional structural diagram of the hardness testing fixture for the insertion tube in an embodiment of this utility model;

[0024] Figure 2 This is a schematic diagram of the clamping component in an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached drawings: 100, base; 210, support arm; 220, clamping assembly; 221, support base; 222, pressure plate; 223, first magnet; 224, positioning pin; 300, insertion tube; 410, scale bracket; 411, bracket base plate; 412, bracket vertical plate; 420, scale; 430, guide rail; 440, limiting component; 450, locking component; 460, clamping plate; 470, clamping bolt. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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 utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] like Figure 1 and Figure 2 The fixture shown includes a base 100, an insertion tube clamping device, and a measuring device. The base 100 is a single piece of substrate, and its upper surface is a mounting plane. The base 100 has a number of threaded holes, and the insertion tube clamping device and the measuring device are both fixed to the threaded holes of the base 100 by screws.

[0030] like Figure 1 and Figure 2 As shown, the insertion tube clamping device includes a support arm 210 and a clamping assembly 220. The bottom of the support arm 210 is fixed to the base 100 by screws, and the clamping assembly 220 is fixed above the support arm 210. The clamping assembly 220 is provided with an insertion tube channel for the insertion tube 300 to pass through, and the clamping assembly 220 is used to clamp the insertion tube 300 located in the insertion tube channel.

[0031] like Figure 1 As shown, the measuring device includes a scale bracket 410, a scale 420, and a guide rail 430. The guide rail 430 is fixed to the base 100, and the scale bracket 410 is slidably connected to the guide rail 430. The guiding direction of the guide rail 430 is parallel to the length extension direction of the insertion tube channel. The scale bracket 410 includes a bracket base plate 411 slidably connected to the guide rail 430, and a bracket vertical plate 412 fixed to the bracket base plate 411. The bracket vertical plate 412 is vertically oriented, and the scale 420 is fixed to the bracket vertical plate 412. The graduation lines on the scale 420 are oriented along the height direction.

[0032] like Figure 1 As shown, two guide rails 430 are arranged in parallel, and both guide rails 430 are fixed to the base 100 by screws. The bracket base plate 411 is located above the two guide rails 430. Each of the two guide rails 430 has a limiting member 440 at both ends in its guiding direction. The limiting member 440 is used to prevent the bracket base plate 411 from sliding out of the guide rail 430. Specifically, the limiting member 440 can be a limiting screw. The length of the portion of the guide rail 430 between the two limiting screws can be 200mm to allow the scale bracket 410 to have a 200mm range of movement on the guide rail 430, providing multiple measurable positions for the insertion tube 300.

[0033] like Figure 1 As shown, the base plate 411 of the support is provided with two locking parts 450, which are used to lock the base plate 411 of the support onto the guide rail 430. Specifically, the locking parts 450 can be Torx screws. When the scale support 410 is adjusted to the required position, the Torx screws can be tightened to lock the base plate 411 of the scale support 410 onto the guide rail 430, preventing the scale support 410 from moving when the scale 420 is being read.

[0034] like Figure 1 As shown, the support vertical plate 412 has a groove arranged vertically, with the groove opening located on the side wall of the support vertical plate 412. The scale 420 is set in the groove. Two clamping plates 460 are fixed to the support vertical plate 412, one at the lower end of the groove opening and the other at the upper end. Both ends of the two clamping plates 460 are fixed to the support vertical plate 412 by clamping bolts 470. When both ends of the clamping plates 460 are fixed by the clamping bolts 470, the side of the scale 420 facing the groove opening is pressed by the clamping plates 460; this prevents the scale 420 from loosening in the groove of the support vertical plate 412, facilitating the reading of the scale 420.

[0035] like Figure 1 As shown, the insertion tube channel of the clamping assembly 220 and the scale support 410 are staggered. For example, the insertion tube channel of the clamping assembly 220 can be located 1cm-2cm in front of the scale support 410; where the front side is the side on the scale 420 where the graduation lines are observed. When measuring the hardness of the insertion tube 300, the orthographic projection of the insertion tube channel and the insertion tube 300 on the base 100 is located in front of the orthographic projection of the support vertical plate 412 on the base 100. The hanging insertion tube 300 will not interfere with the scale support 410 and will not affect the measurement results.

[0036] like Figure 1 and Figure 2As shown, the clamping assembly 220 includes a support base 221 and a pressure plate 222. The support base 221 is fixed above the support arm 210, and the pressure plate 222 covers the support base 221. The support base 221 has a lower positioning groove (not shown) for placing the insertion tube 300, and the pressure plate 222 has an upper positioning groove (not shown) corresponding to the position of the lower positioning groove. The upper and lower positioning grooves cooperate to form an insertion tube channel. The pressure plate 222 and the support base 221 are detachably connected. When the pressure plate 222 covers the support base 221, the pressure plate 222 and the support base 221 cooperate to clamp the insertion tube 300 located in the insertion tube channel.

[0037] like Figure 1 and Figure 2 As shown, in some embodiments, the lower positioning groove on the support base 221 is a V-groove, and the upper positioning groove on the pressure plate 222 is also a V-groove. The V-groove configuration allows the clamping assembly 220 to clamp various sizes of insertion tubes 300.

[0038] like Figure 1 and Figure 2 As shown, the clamping assembly 220 further includes a clamping structure and a positioning structure. The clamping structure is used to drive the pressure plate 222 downward to clamp the insertion tube 300 located in the insertion tube channel. The positioning structure is used to achieve positional positioning between the support base 221 and the pressure plate 222. In some embodiments, the support base 221 has a first mounting groove (not shown) on the side facing the pressure plate 222, and the pressure plate 222 has a second mounting groove (not shown) corresponding to the position of the first mounting groove. The clamping structure includes a first magnet 223 fixed in the first mounting groove of the support base 221 and a second magnet (not shown) fixed in the second mounting groove of the pressure plate 222. The first magnet 223 and the second magnet attract each other to cause the pressure plate 222 to clamp the insertion tube 300 located in the insertion tube channel downward. The positioning structure includes four positioning pins 224 located at the four corners of the support base 221 and four positioning holes (not shown) located at the four corners of the pressure plate 222. The four positioning pins 224 extend into the corresponding positioning holes to position the pressure plate 222 on the support base 221. The pressure plate 222 is fixed to the support base 221 and presses against the insertion tube 300 by the guidance of the positioning pins 224 and the attraction of the two magnets.

[0039] It is understood that multiple first mounting slots and first magnets 223 can be provided on the support base 221, and multiple second mounting slots and second magnets can also be provided on the corresponding pressure plate 222. Each first magnet 223 and a corresponding second magnet attract each other. The positions of the positioning pin and the positioning hole can be interchanged. For example, the positioning pin can be set on the pressure plate 222, and the positioning hole can be set on the support base 221.

[0040] In some embodiments, to reduce damage to the insertion tube 300 by the clamping assembly 220, both the support base 221 and the pressure plate 222 are made of plastic plates, and all the periphery of the support base 221 and the pressure plate 222 are chamfered.

[0041] When measuring the hardness of the insertion tube 300 using this hardness testing fixture, first move the scale bracket 410 to the side away from the support arm 210; then place the insertion tube 300 in the lower positioning groove of the support base 221, and then fix the pressure plate 222 on the support base 221 under the guidance of the positioning pin 224 and the attraction of the two magnets, pressing the insertion tube 300 tightly, with the unpressed part of the insertion tube 300 hanging down naturally; then slide the scale bracket 410 along the guide rail 430 to the lowest position where the insertion tube 300 hangs down, and read the height of the hanging of the insertion tube 300 through the scale line on the scale 420, thus measuring the hardness of the insertion tube 300.

[0042] This hardness testing fixture for insertion tubes can achieve standardized and rapid measurement of the hardness of insertion tubes at 300, better ensuring the consistency of the hardness of multiple insertion tubes at 300 and improving the measurement efficiency of the hardness of insertion tubes at 300; moreover, the entire hardness testing fixture has a simple structure and low manufacturing cost.

[0043] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A fixture for testing the hardness of an insertion tube, characterized in that, include: Base (100); The insertion tube clamping device includes a support arm (210) fixed on the base (100) and a clamping assembly (220) fixed on the support arm (210); the clamping assembly (220) is provided with an insertion tube channel for the insertion tube (300) to pass through, and the clamping assembly (220) is used to clamp the insertion tube (300) located in the insertion tube channel; The measuring device includes a scale bracket (410) slidably connected to the base (100) and a scale (420) connected to the scale bracket (410); the sliding direction of the scale bracket (410) is parallel to the length extension direction of the insertion tube channel, and the scale lines on the scale (420) are set along the height direction.

2. The hardness testing fixture for the insertion tube according to claim 1, characterized in that, The base (100) is provided with a guide rail (430), and the scale bracket (410) is slidably connected to the guide rail (430). The guiding direction of the guide rail (430) is parallel to the length extension direction of the insertion tube channel. The guide rail (430) is provided with limiting members (440) at both ends of the guiding direction. The limiting members (440) are used to prevent the scale bracket (410) from sliding out of the guide rail (430).

3. The hardness testing fixture for the insertion tube according to claim 2, characterized in that, The ruler bracket (410) includes a bracket base plate (411) slidably connected to the guide rail (430) and a bracket vertical plate (412) fixed on the bracket base plate (411). The ruler (420) is fixed on the bracket vertical plate (412). The bracket base plate (411) is provided with a locking member (450) for locking the bracket base plate (411) on the guide rail (430).

4. The hardness testing fixture for the insertion tube according to claim 3, characterized in that, The support vertical plate (412) is provided with a groove arranged in the vertical direction. The groove opening is located on the side wall of the support vertical plate (412). The scale (420) is set in the groove. The support vertical plate (412) is fixed with a clamping piece (460) blocking the groove opening. The side of the scale (420) facing the groove opening is pressed by the clamping piece (460).

5. The hardness testing fixture for the insertion tube according to claim 3, characterized in that, The orthographic projection of the insertion tube channel on the base (100) is located in front of the orthographic projection of the support vertical plate (412) on the base (100); wherein, the front side is the side on the scale (420) where the graduation line is observed.

6. The hardness testing fixture for the insertion tube according to any one of claims 1-5, characterized in that, The clamping assembly (220) includes a support base (221) fixed on the support arm (210) and a pressure plate (222) covering the support base (221); the support base (221) is provided with a lower positioning groove for placing the insertion tube (300), and the pressure plate (222) is provided with an upper positioning groove corresponding to the position of the lower positioning groove. The upper positioning groove and the lower positioning groove cooperate to form the insertion tube channel. The pressure plate (222) and the support base (221) are used to cooperate to clamp the insertion tube (300) located in the insertion tube channel.

7. The hardness testing fixture for the insertion tube according to claim 6, characterized in that, The clamping assembly (220) further includes a clamping structure for driving the pressure plate (222) downward to clamp the insertion tube (300) located in the insertion tube channel.

8. The hardness testing fixture for the insertion tube according to claim 7, characterized in that, The pressing structure includes a first magnet (223) disposed on the support base (221) and a second magnet disposed on the pressure plate (222). The first magnet (223) and the second magnet attract each other so that the pressure plate (222) presses down on the insertion tube (300) located in the insertion tube channel.

9. The hardness testing fixture for the insertion tube according to claim 6, characterized in that, The lower positioning groove and / or the upper positioning groove are V-shaped grooves.

10. The hardness testing fixture for the insertion tube according to claim 7, characterized in that, A positioning structure is provided between the support base (221) and the pressure plate (222) to realize the positioning of the two; and / or, the support base (221) and the pressure plate (222) are both plastic plates.

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