Waist Rotation Measurement Chair

Abstract

The waist rotation measuring chair has a telescopic rod at the rear of the stool surface, and a measuring device is provided on the upper part of the telescopic rod. This product uses a magnetic scale because it has many advantages in the working environment we need: 1: Stable measurement and high repeatability; 2: Dust, grease, vibration, shock and temperature can be overcome; 3: Non-contact measurement technology, no need to consider wear and tear during the measurement process; 4: Open measurement, and sturdy and durable; 5: It is a relatively economical, efficient and accurate measurement method. In addition, the present application can also adopt an adjustable shoulder clamp, which can be adjusted to suit different user groups. In summary, the present application has high practical value, can well realize the measurement of waist rotation angle, and is conducive to promotion and application.

Description

Technical Field

[0001] The invention relates to a waist rotation measuring chair. Background Art

[0002] Currently, there are more and more items in physical examination, but there is no good equipment for measuring waist rotation angle. Summary of the Invention

[0003] Purpose of the invention:

[0004] The invention relates to a waist rotation measuring chair, which aims to solve the problems existing in the past and provide a waist rotation measuring instrument.

[0005] Technical solution:

[0006] The waist rotating measuring chair has a telescopic rod at the rear of the stool and a measuring device at the top of the telescopic rod;

[0007] The measuring device includes a circular slide rail, a support plate and a reader, wherein the arc-shaped support plate is connected to the telescopic rod, a magnetic grid is provided on the outer circumferential side wall of the circular slide rail, and two rows of pulleys are provided at the bottom of the arc-shaped support plate, and a gap is formed between the two rows of pulleys for the circular slide rail to pass through, and the circular slide rail passes between the two rows of pulleys and can move between the two rows of pulleys;

[0008] A reading head for reading magnetic grid information is also provided at the bottom of the support plate. The reading head corresponds to the magnetic grid on the outer circumferential side wall of the annular slide rail, and the reading head is connected to a reader.

[0009] The bottom of the annular slide rail is provided with a shoulder clamping claw for clamping the shoulder.

[0010] A leg guard is provided on the stool leg in front of the bottom of the stool surface.

[0011] The telescopic rod is a telescopic sleeve structure, which includes a lower rod and an upper rod. The lower rod is fixed to the rear part of the stool surface, and the bottom of the upper rod extends into the lower rod and can perform axial telescopic movement relative to the lower rod. The side wall of the lower rod is provided with a bolt through hole for a fastening bolt to pass through. The fastening bolt can pass through the through hole and extend into the lower rod. The side wall of the upper rod is provided with multiple positioning holes in sequence along the axial direction to cooperate with the fastening bolt when in use.

[0012] The rear part of the stool surface is provided with a through hole for the telescopic rod to pass through. The telescopic rod passes through the through hole and can move axially relative to the through hole, and the telescopic rod can also be temporarily fixed relative to the through hole.

[0013] A guide block is provided at the through hole on the stool surface for the telescopic rod to pass through, and the telescopic rod passes through the guide block; the shape of the outer wall of the telescopic rod is a shape that adapts to the internal shape of the guide block.

[0014] The side wall of the guide block is provided with a bolt through hole for the fastening bolt to pass through, and a plurality of telescopic rod positioning holes are provided in sequence along the axial direction on the telescopic rod for the fastening bolt to extend into to achieve positioning. When in use, the fastening bolt passes through the bolt through hole and then extends into the telescopic rod positioning hole to achieve temporary positioning of the telescopic rod.

[0015] The shoulder clamping claw is a downward-opening V-shaped structure, a U-shaped structure, a Y-shaped structure, or an adjustable shoulder clamping claw; the adjustable shoulder clamping claw includes a telescopic vertical rod, an adjustment crossbar, and a downward pressing member;

[0016] The telescopic vertical rod is connected to the bottom of the circular slide rail, the adjustment cross bar is connected to the bottom of the telescopic vertical rod and is perpendicular to the telescopic vertical rod, and the pressing piece is sleeved on the adjustment cross bar and can move laterally along the adjustment cross bar;

[0017] The lower pressing member includes a front pressing arm, a rear pressing arm, and a connecting portion. The front pressing arm and the rear pressing arm are fixedly mounted at the bottom of the connecting portion so that the lower pressing member forms a "U"-shaped structure with an open bottom. A telescopic sleeve is provided in a gap A between the front pressing arm and the rear pressing arm. A first clamp and a second clamp are provided on both sides of the bottom of the telescopic sleeve, respectively. The first clamp and the second clamp are both provided at the bottom of the telescopic sleeve via a rotating shaft B. An intermediate pad is also provided at the bottom of the telescopic sleeve, and the intermediate pad is provided between the first clamp and the second clamp. An inner pad D is provided on the inner side of the lower portion of the first clamp and the second clamp.

[0018] The gap A is a shrinking structure that gradually shrinks from the bottom to the top, and the first clamping piece and the second clamping piece are structures that can be squeezed in the gap A as the front pressure arm and the rear pressure arm move.

[0019] An avoidance notch is respectively provided at the front and rear ends of the middle pad, and the two avoidance notches correspond to the first clamping piece and the second clamping piece respectively.

[0020] The rotating shaft B is provided with a return torsion spring.

[0021] The adjusting cross bar is an external thread structure, and the adjusting cross bar passes through the through hole of the connecting part. A key slot parallel to the axial direction of the adjusting cross bar is provided on the adjusting cross bar, and a rotation-stop key extending into the key slot is provided in the through hole of the connecting part. Two adjusting nuts are provided on both sides of the lower pressure piece, and the two adjusting nuts cooperate with the thread of the adjusting cross bar.

[0022] Advantages and effects:

[0023] This invention relates to a waist rotation measurement chair. This product utilizes a magnetic scale, a relatively advanced and precise measuring device. This product measures angles using the formula (arc length = angle * pi * radius / 180°) (actually the inverse calculation: n = l * 180° / (π * r), where n is the angle (in degrees), l is the arc length, and r is the radius). The desired value is then displayed on a digital display device (e.g., a readout). This principle measures the rotational flexibility of the waist, specifically the angles achievable by clockwise and counterclockwise rotation of the waist.

[0024] A magnetic scale has many magnetic grids on its strip (the outer wall of the circular slide rail). A recording head records magnetic waves at strictly equal intervals on the scale. The distance between adjacent waves on the scale is called the wavelength of the magnetic grid, also known as the pitch or pitch of the magnetic grid. The reader, equipped with a sensing device, reads the equally spaced magnetic waves recorded on the scale and determines the corresponding length and position (position, which is the angle after rotation). This process is conventional technology. As the reader moves along the scale, it records the length of the arc it has traveled. This length is the set arc length. Given the radius of the circle, the angle corresponding to the arc length can be obtained and displayed on a digital display device (e.g., a reader).

[0025] This product uses a magnetic scale because it has many advantages in the working environment we need:

[0026] 1: The measurement is stable and highly repeatable;

[0027] 2: Dust, grease, vibration, shock and temperature can be overcome;

[0028] 3: Non-contact measurement technology, no need to consider wear and tear during the measurement process;

[0029] 4: Open measurement, strong and durable;

[0030] 5: It is a relatively economical, efficient and accurate measurement method.

[0031] In addition, the present application may also adopt adjustable shoulder clamping claws, which can be adjusted to suit different user groups.

[0032] In summary, this application has high practical value, can well realize the measurement of waist rotation angle, and is conducive to promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 1 12 is the power supply;

[0034] Figure 2 Schematic diagram of the structure of the bottom of the fixed plate. Figure 2Reference numeral 13 denotes a reader connection block, through which the reader is fixed to the bottom of the reader fixing plate.

[0035] Figure 3 A top view of the present invention;

[0036] Figure 4 A schematic diagram of the structure of a telescopic rod;

[0037] Figure 5 is a schematic diagram of the reader;

[0038] Figure 6 A schematic diagram of a shoulder clamping claw (initial state);

[0039] Figure 7 for Figure 6 The lower enlarged view of

[0040] Figure 8 for Figure 6 Side view of;

[0041] Figure 9 A schematic diagram showing the telescopic sleeve structure (in use);

[0042] Figure 10 for Figure 9 The lower enlarged view of

[0043] Figure 11 A magnified perspective view showing the first clamping piece, the second clamping piece and the middle spacer;

[0044] Figure 12-1 A cross-sectional view of a telescopic vertical pole;

[0045] Figure 12-2 It is a cross-sectional view of another form of the telescopic pole;

[0046] Figure 12-3 A cross-sectional view of another form of the telescopic pole;

[0047] Figure 13 This is a schematic diagram of a form of cooperation between a circular slide rail and two rows of pulleys;

[0048] Figure 14-1 This is a schematic diagram of another form of cooperation between the annular slide rail and two rows of pulleys;

[0049] Figure 14-2 This is a schematic diagram of another form of cooperation between the annular slide rail and two rows of pulleys;

[0050] Figure 14-3 This is a schematic diagram of another form of cooperation between the annular slide rail and two rows of pulleys;

[0051] Figure 15 Schematic diagram of the structure of the leg guard;

[0052] Figure 16 for Figure 15 Top view

[0053] Figure 17 This is a diagram of the leg guard in use;

[0054] Figure 18 for Figure 17 A top view of

[0055] Figure 19 This is a disassembly diagram of one installation method of the telescopic rod and the guide block;

[0056] Figure 20 This is a partially enlarged three-dimensional exploded view of the cooperation between the lower pressure piece and the adjustment cross bar. DETAILED DESCRIPTION

[0057] The waist rotation measuring chair comprises a stool surface 1 with stool legs 1-1 at the bottom; a telescopic rod 2 is provided at the rear of the stool surface 1, and a measuring device is provided on the upper part of the telescopic rod 2 (generally, it can be provided on the top of the telescopic rod 2);

[0058] The measuring device includes a circular slide 3, an arc-shaped support plate 4 and a reader 5. The arc-shaped support plate 4 is connected to the telescopic rod 2 (the arc-shaped support plate 4 and the reader 5 are both arranged at the top end or near the top end of the telescopic rod 2). A magnetic grid is provided on the outer circumferential side wall of the circular slide 3. Two rows of pulleys 6 are provided at the bottom of the arc-shaped support plate 4 (the rollers 6 are wheels that rotate with the rotating shaft as the axis). Figure 2 、 13 , 14-1, 14-2, 14-3), a gap is formed between the two rows of pulleys for the circular slide 3 to pass through, and the circular slide 3 passes through between the two rows of pulleys and can move between the two rows of pulleys (that is, the circular slide 3 can rotate under the clamping action of the two rows of pulleys, such as Figure 2 、 13 As shown in 14-2, the side of the pulley is provided with a V-shaped groove (such as Figure 13 ) or U-shaped groove 6-1 (such as Figure 14-2 As shown in FIG, the inner and outer side walls of the annular slide rail 3 are provided with protrusions corresponding to the V-shaped groove or U-shaped groove 6-1 (or the shape of the inner and outer side walls of the annular slide rail 3 is adapted to the V-shaped groove or U-shaped groove 6-1), and the protrusions extend into the V-shaped groove or U-shaped groove 6-1 to cooperate with it, forming a clamping effect while preventing the annular slide rail 3 from falling off; this is only one form of preventing the annular slide rail 3 from falling off, and any other known forms can also be used, such as Figure 14-1 In the form shown, Figure 14-1In the embodiment, a square groove 6-1 (which can also be considered as a special form of U-shaped groove) is provided on the side of the pulley, and the inner and outer side walls of the annular slide rail 3 are directly extended into the square groove 6-1 to be clamped. In this case, the inner and outer side walls of the annular slide rail 3 do not need to have additional protrusions, and the cross-section of the annular slide rail 3 can be a rectangle as shown in Figure 14);

[0059] In addition, if Figure 14-3 The two rows of pulleys 6 are ordinary rollers, and the cross-section of the annular slide rail 3 is an "I" shape as shown in the figure. The two rows of rollers are inserted into the grooves on both sides of the "I" shaped annular slide rail 3 to clamp the annular slide rail 3. Of course, other existing well-known implementation methods can also be used.

[0060] like Figure 2 As shown, a reading head 7 for reading magnetic grid information is also provided at the bottom of the arc-shaped support plate 4. The reading head 7 corresponds to the magnetic grid on the outer circumferential side wall of the annular slide rail 3, and the reading head 7 is connected to the reader 5;

[0061] The reader fixing plate is installed on the arc-shaped support plate 4, the reader and power supply 12 are placed on the reader fixing plate, the wiring is completed, the battery box is installed (note: the power cord and reader line are stored in the box), the reader is taken out from the battery box hole, the reader connection block 13 is fixed to the arc-shaped support plate 4 (bottom), the reader 7 is fixed on the reader connection block 13, and the position is adjusted so that the distance between the reader and the track (circular slide rail 3) is less than 1mm.

[0062] The bottom of the annular slide rail 3 is provided with a shoulder clamping claw 8 for clamping the shoulder.

[0063] A leg shield 15 is provided on the stool leg 1 - 1 in front of the bottom of the stool seat 1 .

[0064] The telescopic rod 2 can be in one of the following forms:

[0065] A form of telescopic rod 2: the telescopic rod 2 is a telescopic sleeve structure (such as Figure 4 As shown), the telescopic rod includes a lower rod 2-1 and an upper rod 2-2, the lower rod 2-1 is fixed to the rear of the upper surface of the stool surface 1, the bottom of the upper rod 2-2 extends into the lower rod 2-1 and can do axial telescopic action relative to the lower rod 2-1 (that is, as shown in FIG. Figure 4As shown, it performs an up and down telescopic movement), the side wall of the lower rod 2-1 is provided with a bolt through hole for the fastening bolt 2-3 to pass through, and the fastening bolt 2-3 can pass through the bolt through hole and extend into the lower rod 2-1. The side wall of the upper rod 2-2 is provided with a plurality of positioning holes 2-4 in sequence along the axial direction, which cooperate with the fastening bolt 2-3 when in use. When in use, the fastening bolt 2-3 passes through the bolt through hole of the lower rod 2-1 and extends into the positioning hole 2-4 to complete the height positioning of the upper rod 2-2. The fastening bolt 2-3 can be directly plugged in, that is, the fastening bolt 2-3 and the bolt through hole and positioning hole 2-4 on the side wall of the lower rod 2-1 do not need to be threadedly matched; another way is: one or all of the bolt through hole and positioning hole 2-4 on the side wall of the lower rod 2-1 are provided with an internal thread that can cooperate with the fastening bolt 2-3. When in use, by tightening The fixing bolt 2-3 is used to realize the fastening bolt 2-3 extending into or out of the positioning hole 2-4, that is, the bolt through hole on the side wall of the lower rod 2-1 can be provided with an internal thread that cooperates with the fastening bolt 2-3 (with external threads), and the inner wall of the positioning hole 2-4 can be provided with an internal thread that cooperates with the fastening bolt 2-3 (with external threads), or the bolt through hole and the positioning hole 2-4 are both provided with an internal thread that cooperates with the fastening bolt 2-3 (with external threads). In this way, the temporary positioning can be made more stable.

[0066] When the height of the telescopic rod 2 needs to be adjusted, Figure 4 As shown, remove the fastening bolts 2-3, then pull up or press down the upper rod 2-2 to adjust the height of the upper rod 2-2. After adjusting to the appropriate position, insert the fastening bolts 2-3 into the bolt holes on the side walls of the lower rod 2-1 and extend them into the positioning holes 2-4 to complete the temporary fixation of the upper rod 2-2 after the position adjustment. The inner wall of the lower rod 2-1 and the outer wall of the upper rod 2-2 can be cylindrical or prismatic (triangular prism, quadrangular prism, pentagonal prism, etc.), that is, the cross-sections of the lower rod 2-1 and the upper rod 2-2 are circular or polygonal, so that Figure 4 As a benchmark, equivalent to Figure 4 From the top view, the cross-sections of the inner wall of the lower rod 2-1 and the outer wall of the upper rod 2-2 are circular or polygonal; the shape of the inner wall of the lower rod 2-1 is adapted to the shape of the outer wall of the upper rod 2-2. When the inner wall of the lower rod 2-1 and the outer wall of the upper rod 2-2 are both prism-shaped, the upper rod 2-2 can only move up and down relative to the lower rod 2-1 and cannot rotate. The advantage of the prism is that it has a rotation-stopping function, and the rotation-stopping effect is better after the bolts 2-3 are tightened (the cylindrical structure is positioned and the rotation is stopped by tightening the bolts 2-3). Another form of the telescopic rod 2: such as Figure 1 As shown, the telescopic rod 2 is a straight rod that is not telescopic by itself. Its telescopic movement is achieved by cooperating with the stool surface 1. That is, the rear portion of the stool surface 1 is provided with a through hole for the telescopic rod 2 to pass through. The telescopic rod 2 passes through the through hole and can move axially relative to the through hole (axial movement is as shown in FIG. Figure 1The telescopic rod 2 can also be temporarily fixed relative to the through hole when needed.

[0067] Furthermore, a guide block 9 is provided at the through hole of the stool surface 1 for the telescopic rod 2 to pass through, and the telescopic rod 2 passes through the guide block 9. Figure 1 As shown, the guide block 9 is located above the through hole (it can also be located below, and the above is taken as an example here), and the through hole of the guide block 9 is connected to the through hole of the stool surface 1 for the telescopic rod 2 to pass through.

[0068] The inner through hole of the guide block 9 is a non-cylindrical structure or a cylindrical structure; the outer wall shape of the telescopic rod 2 is a non-cylindrical shape or a cylindrical structure adapted to the inner shape of the guide block 9. The so-called non-cylindrical structure means that the telescopic rod 2 can be a prism, for example: a triangular prism, a quadrangular prism, a pentagonal prism, a hexagonal prism, etc., or a non-cylindrical structure can also be as follows Figure 19 As shown, the main body of the telescopic rod 2 can be cylindrical, and then a vertical bar key AA is set on the outer wall of the cylindrical telescopic rod 2 (the vertical bar key AA is parallel to the axial direction of the telescopic rod 2). In this case, the internal body of the guide block 9 is also a cylindrical through hole, but a key groove AB is set on the inner side wall of the through hole to cooperate with the bar key. In this case, although the main body of the telescopic rod 2 is cylindrical, because of the bar key, the telescopic rod 2 is still called non-cylindrical. Similarly, the internal through hole of the guide block 9 cannot be called cylindrical and is also a type of non-cylindrical. The non-cylindrical structure is mainly set to better prevent it from rotating. Of course, if it is set to a cylindrical structure, its anti-rotation function can also be achieved because of the fixing of the fastening bolts, but the non-cylindrical structure is more effective.

[0069] The side wall of the guide block 9 is provided with a bolt through hole 9-1 for the fastening bolt to pass through, and the telescopic rod 2 is provided with multiple telescopic rod positioning holes in sequence along the axial direction for the fastening bolt to extend into to achieve positioning. Multiple telescopic rod positioning holes are provided from top to bottom; that is, when in use, the fastening bolt can pass through the bolt through hole 9-1 and then extend into the positioning hole of the telescopic rod 2 to achieve temporary positioning of the telescopic rod 2. The fastening bolt can be directly plugged in and out, that is, the fastening bolt does not need to be threaded with the bolt through hole 9-1 and the telescopic rod positioning hole; another way is: one or all of the bolt through hole 9-1 and the telescopic rod positioning hole are provided with an internal thread that cooperates with the fastening bolt, that is, an internal thread that cooperates with the fastening bolt (with external thread) can be provided on the inner wall of the bolt through hole 9-1, and an internal thread that cooperates with the fastening bolt (with external thread) can be provided on the inner wall of the positioning hole of the telescopic rod 2, or an internal thread that cooperates with the fastening bolt (with external thread) can be provided on the inner wall of the bolt through hole 9-1 and the inner wall of the telescopic rod positioning hole; when in use, the fastening bolt is inserted into or withdrawn from the telescopic rod positioning hole by screwing the fastening bolt.

[0070] In this way, when the height of the telescopic rod 2 needs to be adjusted, the fastening bolt is removed, and then the telescopic rod 2 is pulled up or pressed down to make the telescopic rod 2 move up and down relative to the guide block 9. After adjusting the appropriate position, the fastening bolt is passed through the bolt through hole 9-1 and then extended into the telescopic rod positioning hole to complete the temporary positioning of the telescopic rod 2.

[0071] The shoulder claw 8 can be as follows Figure 1 The V-shaped, U-shaped or Y-shaped fixed structure with a downward opening (fixedly connected to the bottom of the circular slide rail 3) shown in the figure can also be as shown in the figure. Figures 6-11 The adjustable structure shown.

[0072] When the above-mentioned V-shaped, U-shaped or Y-shaped fixing structure is used, it is sufficient to simply adjust the telescopic rod 2 and press it downward so that the shoulder clamping claws 8 clamp the user's shoulders.

[0073] And as Figures 6-11 In the adjustable structure shown, the shoulder clamping claw 8 includes a telescopic vertical rod 8-1, an adjustment crossbar 8-2 and a pressing member 8-3;

[0074] The upper end of the telescopic vertical rod 8-1 is fixedly connected to the bottom of the annular slide rail 3, the adjusting cross bar 8-2 is connected to the bottom of the telescopic vertical rod 8-1 and the adjusting cross bar 8-2 is perpendicular to the telescopic vertical rod 8-1 (that is, the axial directions of the telescopic vertical rod 8-1 and the adjusting cross bar 8-2 are perpendicular to each other), and the lower pressing piece 8-3 is sleeved on the adjusting cross bar 8-2 and can move laterally along the adjusting cross bar 8-2 (that is, move along the axial direction of the adjusting cross bar 8-2);

[0075] The pressing member 8-3 includes a front pressing arm 8-3-1, a rear pressing arm 8-3-2 and a connecting portion 8-3-3. The front pressing arm 8-3-1 and the rear pressing arm 8-3-2 are fixedly mounted at the bottom of the connecting portion 8-3-3 so that the pressing member 8-3 forms a "U"-shaped structure with an open bottom (i.e., an inverted structure). A telescopic sleeve (a conventional telescopic sleeve, such as a conventional telescopic sleeve, such as a conventional telescopic sleeve, such as a telescopic sleeve, is provided in the gap A between the front pressing arm 8-3-1 and the rear pressing arm 8-3-2. Figure 9 and 10 As shown, the telescopic sleeve includes a lower sleeve 12-1 and an upper telescopic rod 12-2. The upper end of the telescopic rod 12-2 is connected to the bottom of the connecting portion 8-3-3, and the lower end of the telescopic rod 12-2 extends into the inner cavity of the sleeve 12-1. The sleeve 12-1 can move up and down relative to the telescopic rod 12-2. The bottom of the sleeve 12-1 is connected to the first clamp 9-1 and the second clamp 9-2. A spring 12-1-1 can be set in the sleeve 12-1 (or not set). The upper end of the spring touches the telescopic rod 12-2, and the lower end of the spring touches the bottom of the inner cavity of the sleeve 12-1, as shown in FIG. Figure 10As shown, the top of the inner cavity of the sleeve 12-1 is provided with a sleeve opening for the telescopic rod 12-2 to extend into, and the diameter of the sleeve opening is smaller than the diameter of the inner cavity of the sleeve 12-1, and a bottom anti-slip disk 12-2-1 with a diameter larger than the diameter of the sleeve opening is provided at the bottom of the telescopic rod 12-2. The bottom anti-slip disk 12-2-1 is located in the inner cavity of the sleeve 12-1, mainly to prevent the telescopic rod 12-2 from falling off and separating from the sleeve 12-1. The front and rear sides of the bottom of the telescopic sleeve are respectively provided with a first clip 9-1 and a second clip 9-2 (as shown in FIG. Figure 6 、 7 , 9 and 10); the first clip 9-1 and the second clip 9-2 are both through the shaft B (the shaft is the axis that makes the first clip 9-1 and the second clip 9-2 rotate, and the shaft is used as the axis of rotation, as shown in FIG. Figure 9 、 10 As shown, the axis direction of the shaft is perpendicular to the drawing) is arranged at the bottom of the telescopic sleeve, and an intermediate pad 10 (the pad 10 itself has a certain elasticity) is also provided at the bottom of the telescopic sleeve. The intermediate pad 10 is arranged between the first clamping piece 9-1 and the second clamping piece 9-2, and an inner pad D (itself has a certain elasticity) is provided on the inner side of the lower part of the first clamping piece 9-1 and the second clamping piece 9-2;

[0076] like Figure 6 As shown, the gap A is a shrinking structure that gradually shrinks from the bottom to the top. This setting is to better meet the purpose of gradually squeezing the first clamp 9-1 and the second clamp 9-2 downward; the first clamp 9-1 and the second clamp 9-2 are structures that can be squeezed in the gap A as the front pressure arm 8-3-1 and the rear pressure arm 8-3-2 move (downward). That is, Figure 7 As shown, as the front pressing arm 8-3-1 and the rear pressing arm 8-3-2 move downward, the lower ends of the first clamp 9-1 and the second clamp 9-2 can be squeezed and relatively closed.

[0077] The middle pad 10 and the inner pad D can be made of existing well-known rubber, silicone, sponge, latex, etc.

[0078] like Figure 6 、 8 As shown in Figure 20, the adjusting cross bar 8-2 is an external thread structure. The adjusting cross bar 8-2 passes through the through hole 8-3-3-1 of the connecting portion 8-3-3. A keyway 8-2-1 is provided on the adjusting cross bar 8-2. The length direction of the keyway is parallel to (or consistent with) the axial direction of the adjusting cross bar 8-2. A rotation-stopping key 8-3-5 is provided in the through hole 8-3-3-1 of the connecting portion 8-3-3, which extends into the keyway 8-2-1 and can move along the keyway (to ensure that the lower pressure piece 8-3 can only move axially along the adjusting cross bar 8-2, that is, Figure 8The left and right directions shown in the figure make the lower pressing member 8-3 not rotate around the adjustment cross bar 8-2 as the axis), and the adjustment cross bar 8-2 is further provided with two adjusting nuts 11, which are arranged on both sides of the lower pressing member 8-3 and the two adjusting nuts 11 are threadedly engaged with the adjustment cross bar 8-2;

[0079] like Figure 12-1 As shown, a form of the telescopic vertical rod 8-1: the telescopic vertical rod 8-1 includes an upper telescopic sleeve 8-1-1, a lower telescopic rod 8-1-2 and an adjusting nut 8-1-3. The upper end of the upper telescopic sleeve 8-1-1 is fixedly connected to the bottom of the annular slide rail 3, and the adjusting nut 8-1-3 is sleeved on the lower end of the upper telescopic sleeve 8-1-1. The adjusting nut 8-1-3 is an axially limited rotating nut, that is, the adjusting nut 8-1-3 can only rotate but cannot move up and down along the axial direction of the upper telescopic sleeve 8-1-1. There are many ways to set it up, such as Figure 12-1 As shown: the lower end of the upper telescopic sleeve 8-1-1 is provided with a circular card plate 8-1-5 (similar to a flange) that limits the upward and downward movement of the adjusting nut 8-1-3. The upper part of the adjusting nut 8-1-3 is connected with an upper cover 8-1-6 that covers the card plate 8-1-5. After the adjusting nut 8-1-3 and the upper cover 8-1-6 are connected, an integral rotatable structure that covers the circular card plate 8-1-5 is formed. When the circular card plate 8-1-5 is limited, the structure cannot move up and down along the axial direction of the upper telescopic sleeve 8-1-1, thereby limiting the upward and downward movement of the adjusting nut 8-1-3, and the lower telescopic rod 8 -1-2, the upper end of which passes through the adjusting nut 8-1-3 and extends into the upper telescopic sleeve 8-1-1, and the lower telescopic rod 8-1-2 can perform telescopic movements up and down relative to the upper telescopic sleeve 8-1-1, and the lower end of the lower telescopic rod 8-1-2 is connected to the adjustment cross bar 8-2; the outer wall of the lower telescopic rod 8-1-2 is provided with an external thread, and the adjusting nut 8-1-3 is an internal thread structure, and the adjusting nut 8-1-3 and the lower telescopic rod 8-1-2 are threadedly matched, so that the lower telescopic rod 8-1-2 can be controlled to extend and retract up and down by screwing the adjusting nut 8-1-3, thereby realizing the height adjustment of the lower telescopic rod 8-1-2.

[0080] In addition, if Figure 12-2 As shown, it is another optional form of the telescopic vertical rod 8-1, the telescopic vertical rod 8-1 includes an upper telescopic sleeve 8-1-1, a lower telescopic rod 8-1-2 and an adjusting nut 8-1-3, the upper end of the upper telescopic sleeve 8-1-1 is fixedly connected to the bottom of the circular slide rail 3, and the lower end of the lower telescopic rod 8-1-2 is connected to the adjusting cross bar 8-2;

[0081] A bearing sleeve 8-1-7 is provided at the lower end of the upper telescopic sleeve 8-1-1, and a bearing (such as a deep groove ball bearing) is provided in the bearing sleeve 8-1-7. The outer ring 8-1-9 of the bearing is fixedly connected to the inner wall of the bearing sleeve 8-1-7. The adjusting nut 8-1-3 with an internal thread extends into the upper telescopic sleeve 8-1-1 from the lower end of the upper telescopic sleeve 8-1-1. The outer wall of the adjusting nut 8-1-3 is fixedly connected to the inner ring 8-1-8 of the bearing, so that the adjusting nut 8-1-3 can rotate relative to the upper telescopic sleeve 8-1-1, but the adjusting nut 8-1-3 cannot move axially up and down relative to the upper telescopic sleeve 8-1-1. The lower telescopic rod 8-1-2 with an external thread extends into the adjusting nut 8-1-3 and cooperates with the adjusting nut 8-1-3 thread. The up and down axial movement of the lower telescopic rod 8-1-2 is controlled by the rotation of the adjusting nut 8-1-3.

[0082] like Figure 12-3 As shown, another optional form of the telescopic upright 8-1, which includes an upper telescopic sleeve 8-1-1, a lower telescopic rod 8-1-2 and an adjusting nut 8-1-3. The lower end of the upper telescopic sleeve 8-1-1 is provided with a concave annular groove 8-1-10, and the upper end of the adjusting nut 8-1-3 with an internal thread is provided with a convex outer edge 8-1-11, and the outer edge 8-1-11 is placed in the annular groove 8-1-10. The outer edge 8-1-11 cooperates with the annular groove 8-1-10 so that the adjusting nut 8-1-3 can rotate relative to the upper telescopic sleeve 8-1-1 but cannot make axial movement up and down relative to the upper telescopic sleeve 8-1-1. The lower telescopic rod 8-1-2 with an external thread passes through the adjusting nut 8-1-3, and the lower telescopic rod 8-1-2 is threadedly engaged with the adjusting nut 8-1-3.

[0083] Of course, any other known telescopic vertical rod 8-1 that can be adjusted up and down may also be used.

[0084] The structure of the adjustable shoulder clamping claw 8 is mainly designed to cope with the different body shapes of users. Since the height and width of users' shoulders are different, in order not to affect the accuracy of measurement, the adjustable shoulder clamping claw 8 is designed. The adjustable shoulder clamping claw 8 can be adjusted laterally (i.e., Figure 8 The left and right adjustment shown above can be adjusted to accommodate shoulders of users of different widths, and the vertical adjustment can also be adjusted (i.e. Figure 6 、 8 , 9 for reference up and down adjustment), the vertical adjustment can adapt to the height of the user after sitting down, on the other hand, by adjusting up and down, the clamping degree of the front pressing arm 8-3-1 and the rear pressing arm 8-3-2 can be ensured, while finding a state that makes the user comfortable, it can also ensure that the clamping is as tight as possible, and the structure of the adjustable clamping shoulder claw 8 is as shown Figures 6-11 As shown,

[0085] When the adjustable shoulder clamping claw 8 is used, Figure 6 and 7 The figure shows the initial state (as can be seen from the figure, at this time, the middle pad 10, the first clip 9-1 and the second clip 9-2 are located at the opening of the lower pressure piece 8-3, and this position can be located below the opening, that is, there is a bottom lowest point between the middle pad 10, the first clip 9-1 and the second clip 9-2, etc., and this lowest point can protrude from the opening, or the middle pad 10, the first clip 9-1 and the second clip 9-2, etc. The lowest point of the bottom is flush with the bottom edge of the opening, or the middle pad 10, the first clip 9-1 and the second clip 9-2, etc. The lowest point of the bottom is indented from the opening by a distance, but the indented distance should not be too deep to avoid affecting the use effect. For example, it can be indented by 1-2 cm, etc. The indentation mentioned here is for Figure 6 In general, the lowest point of the bottom of the middle pad 10, the first clamp 9-1 and the second clamp 9-2 is higher than the distance of the bottom edge of the opening). The subject sits on the stool surface 1 and adjusts the height of the telescopic rod 2 so that the middle pad 10 can just touch the shoulder or a small distance away from the shoulder (for example, a distance of about 1-5 cm, so that the front pressing arm 8-3-1 and the rear pressing arm 8-3-2 do not need to press down too much). Then fix the telescopic rod 2 and adjust the shoulder clamping claw 8 laterally. That is, if the user has wide shoulders, adjust it outward (outward means Figure 8 As shown, to the left, the other side is to the right, that is, because the shoulder clamping claws 8 appear in pairs, the left one is to the left and the right one is to the right). If the user's shoulders are narrow, adjust the shoulder clamping claws 8 inwards (inwards means Figure 8 As shown, to the right, the other side is to the left, that is, the left side to the right, the right side to the left), when adjusting horizontally, it is achieved by screwing the two adjusting nuts 11, and the specific process is as follows: Figure 8When the adjusting nut 11 on the left side is tightened, the adjusting nut 11 on the right side is tightened, and the adjusting nut 11 on the left side is tightened. 1-3 makes the lower telescopic rod 8-1-2 drive the front pressure arm 8-3-1 and the rear pressure arm 8-3-2 to move downward gradually (while screwing the adjusting nut 8-1-3, the other hand can hold the lower telescopic rod 8-1-2 or adjust the cross bar 8-2 to keep it moving downward). As the lower pressure piece 8-3 moves downward gradually, the middle pad 10 touches the upper end of the shoulder. As the front pressure arm 8-3-1 and the rear pressure arm 8-3-2 continue to move downward, the telescopic rod 12-2 also moves relative to the sleeve 1. 2-1 moves downward, and the gap A formed by the front pressing arm 8-3-1 and the rear pressing arm 8-3-2, which is larger at the bottom and smaller at the top, will gradually squeeze the first clamp 9-1 and the second clamp 9-2, so that the first clamp 9-1 and the second clamp 9-2 are gradually retracted inward (if the first clamp 9-1 and the second clamp 9-2 are provided with torsion springs at the rotation axis B, then the torsion springs are tightened at this time), so that the first clamp 9-1 and the second clamp 9-2 are tightly clamped on the front and back sides of the shoulder until they are in the appropriate position, such as Figure 9 and 10 In the state shown, the inner pad D below the first clamp 9-1 presses against the front side of the shoulder, the inner pad D below the second clamp 9-2 presses against the back side of the shoulder, and the middle pad 10 presses against the top of the shoulder. In this way, the shoulder is clamped by the middle pad 10 at the top of the shoulder and the first clamp 9-1 and the second clamp 9-2 on the front and back sides. This suitable position can be gradually adjusted. After each adjustment, the user can try to rotate it to observe the clamping degree of the shoulder clamping claw 8. If it is too loose, continue to adjust the shoulder clamping claw 8 downward until the shoulder clamping claw 8 clamps the shoulder.

[0086] In the above-mentioned clamping process, if the spring 12-1-1 is provided in the sleeve 12-1, the spring 12-1-1 is gradually compressed as the front pressure arm 8-3-1 and the rear pressure arm 8-3-2 continue to press downward.

[0087] After use, the adjustable shoulder clamping claw 8 is screwed in the reverse direction to make the lower telescopic rod 8-1-2 drive the front pressure arm 8-3-1 and the rear pressure arm 8-3-2 to move upward gradually, and the telescopic rod 12-2 also moves upward relative to the sleeve 12-1 until the first clamping piece 9-1 and the second clamping piece 9-2 gradually disengage from the gap A, thereby making the first clamping piece 9-1 and the second clamping piece 9-2 no longer have the force to clamp the front and rear sides of the shoulder (if there is a torsion spring at the rotating shaft B, at this time, under the action of the torsion spring, the first clamping piece 9-1 and the second clamping piece 9-2 are expanded to the front and rear sides to Figure 6 and 7 As shown in the state, continue to adjust the lower telescopic rod 8-1-2 upwards. When the telescopic rod 12-2 moves to the limit position relative to the sleeve 12-1, it drives the sleeve 12-1 to move upward together, so that the middle pad 10 also leaves the shoulder. At this time, the user can leave the stool surface 1 and the user ends.

[0088] Further, such as Figure 11 As shown, an avoidance notch 10-1 can be provided. The function of the avoidance notch 10-1 is to ensure that in extreme cases, the closing angle of the first clip 9-1 and the second clip 9-2 is not hindered, and the contact area of ​​the middle pad 10 is increased as much as possible (that is, the size of the middle pad 10 is increased or the contact area between the middle pad 10 and the top of the shoulder is increased) to enhance the user's comfort (of course, this avoidance notch 10-1 is not necessary, because Figure 10 As a benchmark, the length of the middle pad 10 in the front-to-back direction will not exceed the two rotation axes B, plus the Figure 6 、 7 As shown in Figures 9, 10, and 11, the first clip 9-1 and the second clip 9-2 are convex arcs, and the middle pad 10 is also arc-shaped. Therefore, generally speaking, the middle pad 10 will not hinder the first clip 9-1 and the second clip 9-2; the avoidance notch 10-1 is only a further improved structure. Even in extreme cases, the first clip 9-1 and the second clip 9-2 will not penetrate too deep into the avoidance notch 10-1).

[0089] And as Figure 15 As shown (the figure is from Figure 1 The leg shield 15 is arranged on the stool leg 1-1 by a rotating sleeve 15-1. The leg shield 15 can rotate around the stool leg 1-1 by rotating the sleeve 15-1. A limit block 15-2 is also provided on the stool leg 1-1 to limit the rotation position of the leg shield 15. The height of the limit block 15-2 (i.e., perpendicular to the Figure 15 The height of the direction just needs to be able to block the leg board 15; the height of the limit block 15-2 is also Figure 16 distance in the up and down directions).

[0090] When the present application is in use, taking the adjustable shoulder clamp as an example, the subject sits on the stool surface 1, at this time, the position of the leg shield 15 is as follows: Figure 1 and 15 As shown, adjust the height of the telescopic rod 2 so that the middle pad 10 just touches the top of the shoulder, then fix the telescopic rod 2, and then adjust the shoulder clamping claw as described above, clamp the shoulder clamping claw behind the shoulder, and then pull the leg shield 15 outward to Figure 17 and 18 The state of the leg shield 15 makes it possible to be located outside the calf, that is, the leg shield 15 is in a state as shown in FIG. Figure 17 and 18 The open state shown, at this time, from Figure 17 and 18 From the perspective of the user's leg, the user's calf is located on the inner side of the leg shield 15, that is, on the right side. Figure 18 Come and see, Figure 18 The direction pointed by the lower side of the leg shield 15 is actually the front of the user, so that the leg shield 15 prevents the legs from rotating with the body and affecting the measurement; then the waist rotation movement begins, the annular slide 3 rotates accordingly, the reader 7 reads the magnetic grid data of the outer circumferential side wall of the annular slide 3, and reads and displays the waist rotation angle data through the reader 5.

[0091] like Figure 5 As shown, the device parameters

[0092] External power supply: DC24v (with DC24v 6000MA battery)

[0093] Measurement accuracy: 0.01°

[0094] Telescopic rod extension length: 1m

[0095] Measuring shoulder width range: 33--43cm

[0096] Induction pulse time: 1s

[0097] System accuracy: ±0.043

[0098] Resolution: 0.01, 0.05, 0.1, 1

[0099] Display range: -999999——999999

[0100] Built-in battery: AA battery

[0101] External dimensions: 96*72*49.5

[0102] Read head gap: 1-2mm

[0103] Maximum moving speed: 5m / s

[0104] Working temperature: -20℃~70℃

[0105] Parameter settings

[0106] Button Description:

[0107] 1 key (such as Figure 5 The first button on the left): Long press (4s): Modify the current value function status Short press: Clear or exit the current interface

[0108] 2 keys (such as Figure 5 Second key on the left): Long press (4s): sensor adaptive calibration mode function state Short press: modify the current display parameters, normal short press: relative / absolute mode conversion

[0109] 3 keys (such as Figure 5 The third button on the left): Long press (4s): Change the sensor incremental direction function state Short press: Switch or parameter displacement

[0110] 4 keys (such as Figure 5 The fourth button on the left): Long press (4s): Enter the menu

[0111] Short press: Modify confirmation

[0112] Key combination:

[0113] 1+2: Call out the origin value

[0114] Function status menu

[0115]

[0116]

[0117]

[0118]

[0119] Display instructions

[0120] Error message Information Description E01 Parameter input error E06 Sensor failure: 1 damaged 2 cable damaged E07 Magnetic stripe detection failed: 1 No magnetic stripe 2 Magnetic stripe damaged 3 Reading head is too far away from the magnetic stripe E08 The battery is low, it is recommended to replace the battery E09 The reading head is too close to the tape E10 The reading head is too far from the tape E12 No battery, there is no battery in the digital display E20 Measurement value out of range

[0121] Instructions for use:

[0122] How to use a waist measuring device

[0123] 1. The test subject should sit in the appropriate position of the chair with their legs placed between the leg guards to ensure that the range of leg movement of each test subject is the same (due to the different test subjects, the legs may be clamped too tightly or too loosely, but the range of leg movement of each person is consistent, which can ensure the fairness of the measurement). Because we test the flexibility of the waist in a sitting position, to ensure the accuracy of the test, the test subject should not overuse leg strength and keep the legs relaxed.

[0124] 2. The assistant then adjusts the telescopic rod to adjust the height of the shoulder clamp, securing the clamp against the subject's shoulder (or, after adjusting the telescopic rod, adjust the clamp horizontally and vertically, as described above for adjustable shoulder clamps, to secure the clamp against the subject's shoulder). During this time, the subject should maintain a standard sitting posture with their back straight.

[0125] 3. The test begins. During the test, the subject should maintain a straight spine without excessive bending. The subject should rotate the waist at an appropriate speed and avoid twisting the waist so quickly that the shoulder gripper falls off.

[0126] 4. When the testee rotates his waist, an assistant is required to support the measuring wheel rail (i.e., the annular slide rail 3) to help the testee rotate the wheel rail synchronously (to prevent the testee from having difficulty or being unable to rotate the wheel rail during the measurement process due to the testee's force direction not being tangential to the wheel rail). The reader begins to display the testee's waist rotation angle. When the testee reaches his limit position, he should pause for 1 second and avoid excessive waist strength to avoid injury.

[0127] 5. Because the waist test is a dynamic test, the reader needs to pay attention and observe. When the tester stops, the reading and recording should be done in time to prevent the test data from being too error-prone and thus causing recording errors.

[0128] In summary, this application provides a practical waist rotation measurement, which is conducive to popularization and application.

Claims

1. Waist rotation measuring chair, characterized by: A telescopic rod (2) is provided at the rear of the stool surface (1), and a measuring device is provided on the telescopic rod (2); The measuring device comprises a circular slide rail (3), a support plate (4) and a reader (5); the arc-shaped support plate (4) is connected to the telescopic rod (2); a magnetic grid is provided on the outer circumferential side wall of the circular slide rail (3); two rows of pulleys (6) are provided at the bottom of the arc-shaped support plate (4); the circular slide rail (3) passes through and can move between the two rows of pulleys; A reading head (7) for reading magnetic grid information is also provided at the bottom of the support plate (4), the reading head (7) corresponds to the magnetic grid on the outer circumferential side wall of the annular slide rail (3), and the reading head (7) is connected to the reader (5); The bottom of the annular slide rail (3) is provided with a shoulder clamping claw (8) for clamping the shoulder; The shoulder clamping claw (8) is a downward-opening V-shaped structure, a U-shaped structure, a Y-shaped structure, or an adjustable shoulder clamping claw (8); the adjustable shoulder clamping claw (8) comprises a telescopic vertical rod (8-1), an adjustment crossbar (8-2), and a downward pressing piece (8-3); The telescopic vertical rod (8-1) is connected to the bottom of the annular slide rail (3); the adjusting cross bar (8-2) is connected to the bottom of the telescopic vertical rod (8-1) and is perpendicular to the telescopic vertical rod (8-1); the pressing piece (8-3) is sleeved on the adjusting cross bar (8-2) and can move laterally along the adjusting cross bar (8-2); The pressing member (8-3) includes a front pressing arm (8-3-1), a rear pressing arm (8-3-2) and a connecting portion (8-3-3). The front pressing arm (8-3-1) and the rear pressing arm (8-3-2) are fixedly mounted on the bottom of the connecting portion (8-3-3) so that the pressing member (8-3) forms a "U"-shaped structure with an open bottom. A telescopic sleeve is provided in the gap (A) between the front pressing arm (8-3-1) and the rear pressing arm (8-3-2). The bottom of the telescopic sleeve is A first clamp (9-1) and a second clamp (9-2) are respectively provided on both sides; the first clamp (9-1) and the second clamp (9-2) are both provided at the bottom of the telescopic sleeve via a rotating shaft (B); an intermediate pad (10) is also provided at the bottom of the telescopic sleeve; the intermediate pad (10) is provided between the first clamp (9-1) and the second clamp (9-2); an inner pad (D) is provided on the inner side of the lower part of the first clamp (9-1) and the second clamp (9-2); The gap (A) is a shrinking structure that gradually shrinks from the bottom upward, and the first clamp (9-1) and the second clamp (9-2) are structures that can be squeezed in the gap (A) as the front pressure arm (8-3-1) and the rear pressure arm (8-3-2) move.

2. The waist rotation measurement chair according to claim 1, characterized in that: A leg shield (15) is provided on the stool leg (1-1) in front of the bottom of the stool surface (1).

3. The waist rotation measurement chair according to claim 1, characterized in that: The telescopic rod is a telescopic sleeve structure, comprising a lower rod (2-1) and an upper rod (2-2); the lower rod (2-1) is fixed to the rear of the stool surface (1); the bottom of the upper rod (2-2) extends into the lower rod (2-1) and can perform axial telescopic movement relative to the lower rod (2-1); a bolt through hole for a fastening bolt (2-3) to pass through is provided on the side wall of the lower rod (2-1); the fastening bolt (2-3) can pass through the through hole and extend into the lower rod (2-1); and a plurality of positioning holes (2-4) are sequentially provided on the side wall of the upper rod (2-2) along the axial direction and are matched with the fastening bolt (2-3) when in use.

4. The waist rotation measurement chair according to claim 1, characterized in that: A through hole for the telescopic rod (2) to pass through is provided at the rear of the stool surface (1); the telescopic rod (2) passes through the through hole and can move axially relative to the through hole; and the telescopic rod (2) can also be temporarily fixed relative to the through hole.

5. The waist rotation measurement chair according to claim 4, characterized in that: A guide block (9) is provided at the through hole of the stool surface (1) for the telescopic rod (2) to pass through, and the telescopic rod (2) passes through the guide block (9); the outer wall shape of the telescopic rod (2) is adapted to the internal shape of the guide block (9).

6. The waist rotation measurement chair according to claim 5, characterized in that: The side wall of the guide block (9) is provided with a bolt through hole for a fastening bolt to pass through, and a plurality of telescopic rod positioning holes are sequentially provided along the axial direction on the telescopic rod (2) for the fastening bolt to extend into and thereby achieve positioning. When in use, the fastening bolt passes through the bolt through hole and then extends into the telescopic rod positioning hole to achieve temporary positioning of the telescopic rod (2).

7. The waist rotation measurement chair according to claim 1, characterized in that: A relief notch (10-1) is respectively provided at the front and rear ends of the middle cushion block (10), and the two relief notches (10-1) correspond to the first clamping piece (9-1) and the second clamping piece (9-2) respectively.

8. The waist rotation measurement chair according to claim 1, characterized in that: A return torsion spring is provided on the rotating shaft (B).

9. The waist rotation measurement chair according to any one of claims 7-8, characterized in that: The adjusting cross bar (8-2) is an external thread structure. The adjusting cross bar (8-2) passes through the through hole (8-3-3-1) of the connecting portion (8-3-3). A keyway (8-2-1) parallel to the axial direction of the adjusting cross bar (8-2) is provided on the adjusting cross bar (8-2). A rotation-stopping key (8-3-5) extending into the keyway is provided in the through hole of the connecting portion (8-3-3). Two adjusting nuts (11) are provided on both sides of the lower pressing member (8-3). The two adjusting nuts (11) are threadedly engaged with the adjusting cross bar (8-2).

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