Measuring scale

Abstract

The utility model provides a measuring scale, which comprises a scale frame, a measuring part and a damping part, the measuring part comprises a measuring rod, the measuring rod is slidably mounted on the ruler frame, and the measuring rod moves relative to the ruler frame so as to measure the size of the to-be-measured object; the damping part is installed on the ruler frame, and the damping part abuts against the measuring rod to increase the sliding resistance of the measuring rod. The resistance of the measuring rod during sliding is increased through the damping part, so that the measuring rod can move only under large acting force, the anti-interference capability of the measuring rod is improved, and the situation that the measuring rod moves due to interference during measurement reading, and consequently measurement reading jumps and is inaccurate is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of size measurement, in particular to a measuring ruler. Background Art

[0002] Micrometer, as a common tool in the field of precision measurement, is widely used in various precision machining and measurement occasions due to its high accuracy and reliability. It usually consists of a fine spiral screw and a fine adjustment nut, which can achieve accurate measurement of extremely small dimensional changes. The design of the micrometer enables it to measure the outer diameter, thickness or depth of the workpiece with an accuracy of 0.001 mm or finer.

[0003] With the development of science and technology, the emergence of digital measuring rulers (electronic micrometers) combines the functions of traditional micrometers with modern electronic technology to provide digital reading display. This digital micrometer captures the measurement value through a built-in sensor, converts the measurement data into a digital signal, and directly displays the reading on the LCD screen. This design not only improves the convenience of reading, but also reduces human reading errors, and is particularly suitable for applications with high measurement accuracy requirements.

[0004] However, despite the obvious advantages of digital measuring tape in terms of ease of use and accuracy, it also has certain limitations. Due to its high sensitivity, slight external disturbances such as vibration, impact or instability of the object being measured may cause relative movement between the measuring rod and the tape frame, which in turn causes the digital reading to fluctuate. This fluctuation makes it difficult for the operator to quickly determine the accurate reading, and sometimes even leads to misjudgment and incorrect measurement results. Utility Model Content

[0005] In view of this, the purpose of the utility model is to overcome the deficiencies in the prior art and provide a measuring ruler.

[0006] The utility model provides the following technical solutions:

[0007] An embodiment of the utility model provides a measuring ruler, which includes a ruler frame, a measuring part and a damping part; the measuring part includes a measuring rod, the measuring rod is slidably mounted on the ruler frame, and the measuring rod moves relative to the ruler frame to measure the size of an object to be measured; the damping part is mounted on the ruler frame, and the damping part abuts against the measuring rod to increase the resistance of the measuring rod to sliding.

[0008] In one embodiment, the ruler frame is provided with a mounting channel, and the measuring ruler also includes a mounting shell, the mounting shell is installed at the mounting channel, a sliding channel is provided on the mounting shell, a mounting groove is opened on the inner wall of the sliding channel, the damping part is installed at the mounting groove, and the measuring rod is inserted into the sliding channel, so that the measuring rod can be slidably installed at the mounting channel of the ruler frame through the mounting shell.

[0009] In one embodiment, the mounting shell includes a protruding portion and a matching portion; the protruding portion and the matching portion are coaxially fixedly connected, a mounting groove is provided on the protruding portion, a matching through hole is provided on the matching portion, the matching through hole is connected to the mounting groove, and the matching through hole and the mounting groove are coaxially arranged; the measuring rod is penetrated through the matching through hole and the mounting groove, and the inner wall of the matching through hole abuts against the outer wall of the measuring rod.

[0010] In one embodiment, the outer diameter of the matching portion is equal to the inner diameter of the installation channel, and the outer diameter of the protruding portion is greater than the outer diameter of the matching portion.

[0011] In one embodiment, the mounting groove is a stepped hole, comprising a first hole segment and a second hole segment, the first hole segment being farther away from the mating portion relative to the second hole segment, and the inner diameter of the first hole segment being smaller than the inner diameter of the second hole segment; a chamfer is provided at one end of the first hole segment away from the second hole segment, and the damping portion is installed in the second hole segment.

[0012] In one embodiment, the mating portion is threadably mated with the ruler frame.

[0013] In another embodiment, the mating portion is interference fit with the ruler frame.

[0014] In one embodiment, the damping portion is made of a flexible material.

[0015] In one of the embodiments, the damping portion is an annular ring structure, and the damping portion enables the measuring rod and the ruler frame to be sealed and matched.

[0016] In one embodiment, the damping part is a block structure.

[0017] The embodiments of the present utility model have the following advantages:

[0018] The damping part increases the resistance of the measuring rod when it slides, so that the measuring rod can only move when subjected to a greater force, thereby improving the anti-interference ability of the measuring rod and preventing the measuring rod from moving due to interference during measurement, resulting in inaccurate measurement readings.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A cross-sectional view of an embodiment of a measuring ruler of the utility model at a viewing angle is shown;

[0022] Figure 2 A cross-sectional view showing a mounting shell and a damping portion in an embodiment of a measuring ruler of the utility model from one perspective;

[0023] Figure 3 A cross-sectional view showing a ruler frame in one embodiment of a measuring ruler of the utility model from one viewing angle;

[0024] Figure 4 A cross-sectional view from one perspective of a mounting shell in an embodiment of a measuring ruler of the utility model is shown;

[0025] Figure 5 A cross-sectional view from one perspective of a mounting shell and a damping portion in one embodiment of a measuring ruler of the utility model is shown;

[0026] Figure 6 A structural schematic diagram showing a partial structure of a viewing angle in another embodiment of a measuring ruler of the utility model;

[0027] Figure 7 for Figure 6 A partial enlarged view of point A in the middle.

[0028] Description of main component symbols:

[0029] 1000-foot frame; 1100-installation channel;

[0030] 2000- measuring rod;

[0031] 3000-mounting shell; 3100-protrusion; 3110-mounting groove; 3112-first hole section; 3114-second hole section; 3116-chamfer; 3200-matching portion; 3210-matching through hole; 3300-sliding channel;

[0032] 4000- Damping part. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In addition, 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. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the template herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0038] An embodiment of the present application provides a measuring ruler, which can measure the size of an object.

[0039] like Figures 1 to 7As shown, the measuring ruler includes a ruler frame 1000 , a measuring part and a damping part 4000 .

[0040] like Figure 1 As shown, the measuring ruler is a micrometer, and the measuring part includes a measuring rod 2000, which is slidably mounted on a ruler frame 1000, and the measuring rod 2000 moves relative to the ruler frame 1000 to measure the size of the object to be measured; the damping part 4000 is mounted on the ruler frame 1000, and the damping part 4000 abuts against the measuring rod 2000 to increase the resistance of the measuring rod 2000 to sliding.

[0041] The damping part 4000 increases the resistance of the measuring rod 2000 so that the measuring rod 2000 can move only when subjected to a greater force, thereby improving the anti-interference ability of the measuring rod 2000 and preventing the measuring rod 2000 from moving due to interference during measurement, thereby preventing the measurement reading from jumping and being inaccurate.

[0042] It should be noted that the ingenious design of the damping part 4000 can significantly enhance the resistance encountered by the measuring rod 2000 when sliding. This resistance does not simply prevent the movement of the measuring rod 2000, but limits the speed and strength of its movement within a certain range, so that the measuring rod 2000 can only move when subjected to a larger force. Such a design helps to greatly improve the anti-interference ability of the measuring rod 2000.

[0043] In the actual measurement process, the measuring rod 2000 is often subject to various interferences from the external environment, such as vibration, airflow, and uneven force caused by tilt. These interference factors may cause the measuring rod 2000 to move slightly when it does not need to move, thereby affecting the accuracy of the measurement readings. The introduction of the damping part 4000 is like installing a "stabilizer" for the measuring rod 2000, so that it can maintain a relatively stable state in the face of these interferences and reduce unnecessary movement.

[0044] In addition, the design of the damping part 4000 also takes into account the stability of the measurement reading when the measuring ruler is a digital micrometer. When the measuring rod 2000 is moved by a large force, the damping part 4000 can ensure that the movement of the measuring rod 2000 is smooth and continuous, rather than sudden jumps or jitters. In this way, we can avoid the measurement reading from jumping due to the sudden movement of the measuring rod 2000, thereby ensuring the accuracy and reliability of the measurement results.

[0045] Exemplarily, the measuring ruler provided in the embodiment of the utility model is a digital micrometer, and the measuring part also includes a digital display screen, which is mounted on the ruler frame 1000 for displaying the measurement readings. The damping part 4000 is provided to prevent the readings from jumping. Exemplarily, the digital micrometer is a grating type digital micrometer. In another embodiment, the measuring ruler provided in the embodiment of the utility model is a mechanical micrometer, and the damping part 4000 is provided to still increase the friction between the ruler frame 1000 and the measuring rod 2000, improve the stability of the measuring rod 2000 relative to the ruler frame 1000, and increase the anti-interference ability of the measuring rod 2000.

[0046] like Figure 3 As shown, in one embodiment, the ruler frame 1000 is provided with a mounting channel 1100; Figure 2 As shown, the measuring ruler provided in the embodiment of the utility model further includes a mounting shell 3000; Figure 1 As shown, the mounting shell 3000 is mounted at the mounting channel 1100; Figure 4 As shown, the mounting shell 3000 is provided with a sliding channel 3300, and the inner wall of the sliding channel 3300 is provided with a mounting groove 3110; Figure 2 As shown, the damping part 4000 is installed at the installation groove 3110; Figure 1 As shown, the measuring rod 2000 is inserted into the sliding channel 3300, so that the measuring rod 2000 is slidably installed at the mounting channel 1100 of the ruler frame 1000 through the mounting shell 3000. For example, the measuring rod 2000 is a cylindrical rod body, and the sliding channel 3300 is a circular through hole. In another embodiment, when the measuring ruler is a vernier caliper, the measuring rod 2000 is a rectangular parallelepiped structure, and the sliding channel 3300 is a through hole with a rectangular radial cross section.

[0047] like Figure 4 As shown, in one embodiment, the mounting shell 3000 includes a protruding portion 3100 and a mating portion 3200. Exemplarily, the mounting shell 3000 is made of metal.

[0048] The protruding portion 3100 and the matching portion 3200 are coaxially fixedly connected, the protruding portion 3100 is provided with a mounting groove 3110, the mounting groove 3110 is an annular groove structure, the matching portion 3200 is provided with a matching through hole 3210, the matching through hole 3210 is connected to the mounting groove 3110, and the matching through hole 3210 is coaxially arranged with the mounting groove 3110. For example, Figure 4 As shown, the outer wall of the protrusion 3100 has an inclined surface.

[0049] The measuring rod 2000 is inserted through the matching through hole 3210 and the mounting groove 3110, and the inner wall of the matching through hole 3210 abuts against the outer wall of the measuring rod 2000, which can limit the shaking of the measuring rod 2000 in the radial direction through the inner wall of the matching through hole 3210, thereby improving the measurement accuracy. The damping part 4000 is installed in the mounting groove 3110, and the mounting groove 3110 can limit the movement of the damping part 4000 along the axial direction of the measuring rod 2000, thereby improving the reliability.

[0050] like Figure 3 and Figure 4 As shown, in one embodiment, the outer diameter of the mating portion 3200 is equal to the inner diameter of the mounting channel 1100, the outer diameter of the protrusion 3100 is larger than the outer diameter of the mating portion 3200, the mating portion 3200 and the protrusion 3100 are fixed to form a T-shaped mounting shell 3000, the mounting shell 3000 is installed to the mounting channel 1100 through the mating portion 3200, and the axial movement of the mounting shell 3000 is limited by the protrusion 3100.

[0051] like Figure 4 As shown, in one embodiment, the mounting groove 3110 is a stepped hole, and the mounting groove 3110 includes a first hole section 3112 and a second hole section 3114. The first hole section 3112 is farther away from the matching portion 3200 than the second hole section 3114, and the second hole section 3114 is closer to the matching portion 3200 than the first hole section 3112. The inner diameter of the second hole section 3114 is greater than the inner diameter of the first hole section 3112, and the inner diameter of the first hole section 3112 is greater than the inner diameter of the matching through hole 3210, and the inner diameter of the matching through hole 3210 is equal to the outer diameter of the measuring rod 2000. Along the axial direction of the mounting shell 3000, the matching through hole 3210, the second hole section 3114 and the first hole section 3112 are arranged in sequence.

[0052] A chamfer 3116 is provided at one end of the first hole section 3112 away from the second hole section 3114, and the chamfer 3116 has an inclined surface. When the damping part 4000 is installed from the first hole section 3112 to the second hole section 3114, the inclined surface of the chamfer 3116 can guide the damping part 4000 to shrink and deform in its own radial direction, so that the damping part 4000 can smoothly enter the second hole section 3114. The provision of the chamfer 3116 helps the damping part 4000 to be installed in the second hole section 3114 more easily and ensures that the damping part 4000 can be installed in the second hole section 3114.

[0053] In one embodiment, the matching portion 3200 is threadedly matched with the ruler frame 1000. In another embodiment, the matching portion 3200 is interference-fitted with the ruler frame 1000. In another embodiment, the matching portion 3200 is fixedly connected with the ruler frame 1000 by bolts.

[0054] In one embodiment, the damping part 4000 is made of a flexible material, for example, one of the following: nitrile butadiene rubber (NBR), fluororubber (FKM), chloroprene rubber (CR), butyl rubber (BR) or ethylene propylene rubber (EPDM).

[0055] like Figure 2 As shown, in one embodiment, the damping part 4000 is an annular ring structure, which can improve the anti-oil, anti-dust and anti-water capabilities of the mounting shell 3000 and the measuring rod 2000. Exemplarily, the damping part 4000 is an O-ring structure, and the damping part 4000 makes the measuring rod 2000 and the ruler frame 1000 seal and match. In another embodiment, the damping part 4000 is a Y-ring, and the opening of the Y-ring of the damping part 4000 is opened along a first direction, and the first direction is the direction in which the protrusion 3100 points to the matching part 3200; in another embodiment, the opening of the Y-ring of the damping part 4000 is opened in the opposite direction of the first direction.

[0056] like Figure 5 As shown, in another embodiment, the damping part 4000 can be replaced with the technical features of the O-ring structure by the following technical features of the damping part 4000 of the block structure:

[0057] The damping part 4000 is a block structure, and the damping part 4000 includes a plurality of block structures, and the plurality of block structures are evenly distributed circumferentially around the axis of the measuring rod 2000 . In another embodiment, the block structures are spaced apart, and there is a gap between the block structures and the block joints, so that the ruler frame 1000 can be ventilated and breathable to prevent the accumulated liquid inside the ruler frame 1000 from corroding the internal structure of the inner frame, and the ruler frame 1000 is also provided with a liquid distribution hole for circulating liquid; in one embodiment, the size of the gap between the block structures of the damping part 4000 is adjustable to expand the gap between the block structures and the block structures, improve the liquid fluidity, and enable the accumulated liquid inside the ruler frame 1000 to be discharged from the gap between the block structure and the block structure in time, or to make the block structures abut against each other to eliminate the gap between the block structures and the block structures, thereby improving the sealing performance; illustratively, the block structure of the damping part 4000 slides relative to the mounting groove 3110 to adjust the size of the gap between the block structure and the block structure of the damping part 4000. In one embodiment, the block structures abut against each other to achieve a sealed fit between the measuring rod 2000 and the mounting shell 3000, thereby improving the anti-oil, dust and water resistance of the mounting shell 3000 and the measuring rod 2000.

[0058] like Figure 6 and Figure 7As shown, in another embodiment, the measuring ruler provided by the embodiment of the utility model is a digital display vernier caliper, and the measuring part also includes a digital display screen, which is installed on the ruler frame 1000 to display the measurement readings. The damping part 4000 is set to prevent the readings from jumping.

[0059] The mounting shell 3000 is disposed on the ruler frame 1000, and the measuring rod 2000 is slidably mounted on the ruler frame 1000. In the present embodiment, the mounting shell 3000 is configured as a shell having a rectangular cross-section, and the mounting channel 1100 provided on the ruler frame 1000 for mounting the mounting shell 3000 is a square through hole. The outer wall surface of the mounting shell 3000 is configured as a rectangular cuboid structure adapted to the square through hole of the mounting channel 1100, and the sliding channel 3300 provided on the mounting shell 3000 is a square through hole, and the measuring rod 2000 is configured as a rectangular cuboid structure adapted to the sliding channel 3300. The mounting shell 3000 is provided with a mounting groove 3110 of a rectangular ring groove structure, and the damping part 4000 is arranged in the mounting groove 3110 of the rectangular ring groove structure. The damping part 4000 is an O-ring, which is installed between the measuring rod 2000 and the mounting shell 3000 to provide sealing and damping effects. The O-ring is made of a flexible material, so the shape of the O-ring can be deformed to adapt to the shape of the mounting groove 3110. In another embodiment, as an example, the damping part 4000 is a Y-ring, and its opening is opened along the first direction; in another embodiment, as an example, the Y-ring opening of the damping part 4000 is opened in the opposite direction of the first direction.

[0060] In another embodiment, the damping portion 4000 of the measuring ruler of a digital display vernier caliper includes two block structures, the two block structures are respectively a first block and a second block, the two sides of the measuring rod 2000 are respectively a first side edge and a second side edge, the first side edge and the second side edge are respectively located on opposite sides of the measuring rod 2000, the first block and the second block are respectively mounted on corresponding positions of the mounting shell 3000, and the first block abuts the first side edge, and the second block abuts the second side edge. The first block and the second block abut the measuring rod 2000 to increase the friction between the measuring rod 2000 and the mounting shell 3000, thereby improving the anti-interference ability of the measuring rod 2000, and preventing the measuring rod 2000 from moving unnecessarily due to external interference during the measurement process, resulting in inaccurate measurement readings.

[0061] It should be noted that: through the design of the first block and the second block structure, when the measuring rod 2000 slides, the first block and the second block will generate friction with it, thereby increasing the sliding resistance of the measuring rod 2000. This increased friction enables the measuring rod 2000 to move only when subjected to a large force, effectively improving the anti-interference ability of the measuring rod 2000. Even in the presence of external interference, such as vibration or airflow disturbance, the measuring rod 2000 can remain stable and avoid unnecessary movement.

[0062] Therefore, the block structure of the damping part 4000 not only increases the friction between the measuring rod 2000 and the damping part 4000, but also significantly improves the accuracy and reliability of the measurement. It effectively prevents the measuring rod 2000 from being disturbed and moving during the measurement, thereby avoiding the jump and inaccuracy of the measurement reading. This innovative design provides strong support for the performance improvement and stability guarantee of the digital display vernier caliper.

[0063] For example, Figure 6 and Figure 7 As shown, during use, the ruler frame 1000 is fixed relative to the measuring rod 2000, and the measuring rod 2000 is moved to measure the size of the object to be measured.

[0064] In another embodiment, the measuring ruler provided by the embodiment of the utility model is a mechanical vernier caliper.

[0065] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limiting, and thus other examples of the exemplary embodiments may have different values.

[0066] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0067] The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A measuring ruler, characterized in that: include: Ruler Frame (1000); A measuring part, the measuring part comprising a measuring rod (2000), the measuring rod (2000) being slidably mounted on the ruler frame (1000), the measuring rod (2000) moving relative to the ruler frame (1000) to measure the size of an object to be measured; A damping part (4000), wherein the damping part (4000) is mounted on the ruler frame (1000), and the damping part (4000) abuts against the measuring rod (2000) to increase the resistance to sliding of the measuring rod (2000).

2. The measuring ruler according to claim 1, characterized in that: The ruler frame (1000) is provided with a mounting channel (1100); The measuring ruler further comprises: a mounting shell (3000), the mounting shell (3000) being mounted on the mounting channel (1100), a sliding channel (3300) being provided on the mounting shell (3000), a mounting groove (3110) being provided on the inner wall of the sliding channel (3300), the damping part (4000) being mounted on the mounting groove (3110), the measuring rod (2000) being passed through the sliding channel (3300), so that the measuring rod (2000) is slidably mounted on the mounting channel (1100) of the ruler frame (1000) through the mounting shell (3000).

3. The measuring ruler according to claim 2, characterized in that: The mounting shell (3000) comprises a protruding portion (3100) and a matching portion (3200); The protruding portion (3100) and the matching portion (3200) are coaxially fixedly connected, the protruding portion (3100) is provided with a mounting groove (3110), the matching portion (3200) is provided with a matching through hole (3210), the matching through hole (3210) is connected to the mounting groove (3110), and the matching through hole (3210) and the mounting groove (3110) are coaxially arranged; The measuring rod (2000) is inserted into the matching through hole (3210) and the mounting groove (3110), and the inner wall of the matching through hole (3210) abuts against the outer wall of the measuring rod (2000).

4. The measuring ruler according to claim 3, characterized in that: The outer diameter of the matching portion (3200) is equal to the inner diameter of the installation channel (1100), and the outer diameter of the protruding portion (3100) is greater than the outer diameter of the matching portion (3200).

5. The measuring ruler according to claim 3, characterized in that: The mounting groove (3110) is a stepped hole, and the mounting groove (3110) comprises a first hole section (3112) and a second hole section (3114), the first hole section (3112) is farther away from the matching portion (3200) than the second hole section (3114), and the inner diameter of the first hole section (3112) is smaller than the inner diameter of the second hole section (3114); A chamfer (3116) is provided at one end of the first hole section (3112) away from the second hole section (3114), and the damping portion (4000) is installed in the second hole section (3114).

6. The measuring ruler according to claim 3, characterized in that: The matching portion (3200) is threadably matched with the ruler frame (1000); or; The matching portion (3200) is interference-fitted with the ruler frame (1000).

7. The measuring ruler according to claim 1, characterized in that: The damping part (4000) is made of a flexible material.

8. The measuring ruler according to any one of claims 1 to 7, characterized in that: The damping part (4000) is an annular ring structure, and the damping part (4000) enables the measuring rod (2000) and the ruler frame (1000) to be sealed and matched.

9. The measuring ruler according to any one of claims 1 to 7, characterized in that: The damping part (4000) is a block structure.

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