Sit-and-reach evaluation device for sports evaluation

Abstract

The invention relates to the technical field of sit-and-reach evaluation, and discloses a sit-and-reach evaluation device for sports evaluation, which comprises a bearing plate, a measuring block and an L-shaped sliding plate, the measuring block is arranged at the top of the bearing plate, and the L-shaped sliding plate is slidably connected to the top of the measuring block. A speed reduction assembly used for limiting the sliding speed of the L-shaped sliding plate is arranged in the measuring block, a fixing assembly used for limiting the standard action of a measurer is arranged at the top of the bearing plate, and through the arrangement of the fixing assembly and a length adjusting assembly, the device can rapidly fix a columnar positioning block at one end of an elastic rope through a positioning cylinder set, a limiting ball and a pressing block; according to the device, the elastic rope is fixed on the leg of the tester, so that the effect of fixing the leg of the tester is achieved, the standardization of measurement actions is ensured, more reliable data is provided for evaluating the body flexibility of the tester, in addition, the newly designed elastic rope fixing mode can better adapt to testers of various body types, and the universality of the device is improved.

Description

Technical Field

[0001] The invention relates to the field of sit-and-reach assessment, and in particular to a sit-and-reach assessment device for sports assessment. Background Art

[0002] The sit-and-reach test device is a testing instrument used to test the range of motion of the trunk, waist, hip and other joints of the human body in a static state, so as to reflect the extensibility, elasticity and development level of the joints, ligaments and muscles in these parts.

[0003] There are many obvious drawbacks in the existing sit-and-reach assessment devices on the market, which have brought a series of adverse effects on physical tests and physical flexibility assessment. In terms of measurement accuracy, the traditional sit-and-reach assessment devices are usually not equipped with a device to fix the human legs, which makes it very easy for the tester to deform his movements during the measurement process. For example, the tester will unconsciously bend his legs, shake his body, or use the strength of his legs when pushing the cursor. These irregular movements will lead to serious inaccuracy in the measurement data. Inaccurate measurement data cannot truly reflect the tester's physical flexibility level, resulting in a lack of reliable basis for physical education, training, and health assessment, making it difficult to formulate scientific and reasonable exercise plans and goals. At the same time, in terms of ease of operation, traditional devices lack effective fixing means, and often require the tester to maintain the correct posture by himself, which increases the difficulty and uncertainty of the test. During the test, the tester needs to pay attention to his leg movements at all times and cannot focus on the test itself, which is easy to distract attention and affect the test effect. Moreover, for some testers who lack experience or have poor physical coordination, maintaining the correct posture is even more of a challenge, and it takes multiple attempts to complete the test, wasting time and energy. In addition, the adaptability of the traditional sit-and-reach test device is also relatively limited. Testers of different body shapes may feel uncomfortable when using the traditional device because there is no suitable way to fix it. For example, testers with smaller statures think that the device is too loose and cannot effectively fix it, while testers with larger statures think that the device has a small space and restricts the extension of its legs. This lack of adaptability limits the widespread application of the device and it cannot meet the testing needs of different groups of people.

[0004] In terms of safety, during the test of traditional sit-and-reach evaluation devices, if the tester pushes the L-shaped slide board for testing, there is a lack of effective reset control mechanism. When the coil spring wheel group elastically stretches to push the slide board to reset, the reset speed cannot be adjusted. This results in that if the slide board moves faster, on the one hand, it is not easy to count the tester's sit-and-reach measurement value, which greatly reduces the accuracy of the test result. The inaccurate measurement value will affect the correct assessment of the tester's body flexibility. On the other hand, the fast-moving slide board is easy to hit the tester and cause impact injuries to the tester. Secondly, some traditional sit-and-reach test devices need to be manually reset after the test is completed. This process is extremely time-consuming and slows down the progress and efficiency of the test. Moreover, manual reset is easily affected by human factors, and there are certain differences in the reset speed and method of different operators.

[0005] Therefore, it is necessary to provide a sit-and-reach assessment device for sports assessment to solve the above problems. Summary of the invention

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a sit-and-reach assessment device for sports assessment.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a sit-and-reach assessment device for sports assessment, comprising a load-bearing plate, a measuring block and an L-shaped slide plate, the measuring block being arranged on the top of the load-bearing plate, the L-shaped slide plate being slidably connected to the top of the measuring block, a deceleration component for limiting the sliding speed of the L-shaped slide plate being arranged inside the measuring block, a fixing component for limiting the movement norms of the measurer being arranged on the top of the load-bearing plate, and a length adjustment component for cooperating with the fixing component for fixing the load-bearing plate.

[0008] Preferably, the deceleration assembly includes a coil spring wheel group, which is rotatably connected to the inside of the measuring block, the outer wall of the coil spring wheel group is transmission-connected to a transmission belt, the top of the transmission belt is fixedly connected to a limiting block, the inside of the measuring block is rotatably connected to a speed measuring wheel, and positioning rods are symmetrically fixedly connected on both sides of the speed measuring wheel.

[0009] Preferably, the deceleration assembly also includes a positioning plate group, which is fixedly connected to the end of the positioning rod away from the speed measuring wheel, the interior of the positioning plate group is annularly distributed and rotatably connected to a limiting clamping strip, and the interior of the measuring block is symmetrically fixedly connected to a limiting plate.

[0010] Preferably, the fixing assembly includes a positioning cylinder group, the top of the load-bearing plate is fixedly connected with the positioning cylinder group, the top of the positioning cylinder group is provided with limiting grooves in a ring-shaped manner, the limiting grooves of the positioning cylinder group are slidably connected with limiting beads, the outer side of the positioning cylinder group is fixedly connected with a distance increasing ring, the top of the distance increasing ring is fixedly connected with a return spring, the end of the return spring away from the distance increasing ring is fixedly connected with a pressing block, and the pressing block is slidably connected to the outer side of the positioning cylinder group.

[0011] Preferably, the fixing assembly further comprises a columnar positioning block, the columnar positioning block is slidably connected to the top of the positioning tube group, an elastic rope is fixedly connected to the top of the columnar positioning block, and an arc-shaped groove is formed on the outer wall of the columnar positioning block.

[0012] Preferably, the length adjustment assembly includes a retractable cover, the retractable cover is slidably connected to one end of the elastic rope away from the columnar positioning block, and an interference ring is arranged inside the load-bearing plate.

[0013] Preferably, the speed measuring wheel is rotatably connected to the middle part of the transmission belt, and the L-shaped slide plate is clamped to the transmission belt via a limiting clamp block.

[0014] Preferably, a torsion spring is provided between the positioning disk set and the limiting clamping strip, and the positioning disk set and the limiting clamping strip are both rotatably connected to the interior of the limiting disk.

[0015] Preferably, the shrink cover is threadedly connected to the top of the load-bearing plate, and the bottom of the shrink cover is arranged to be inclined, and one end of the elastic rope away from the columnar positioning block is slidably connected to the inside of the abutment ring.

[0016] The invention provides a sit-and-reach assessment device for sports assessment. Compared with the prior art, the invention has the following beneficial effects: 1. Through the setting of the fixing component and the length adjustment component, when the tester uses the sit-and-reach assessment device, the traditional sit-and-reach assessment device usually does not have a device to fix the human legs, so that the tester is prone to deformation of the movement during the measurement process, which leads to inaccurate measurement data. The device can quickly fix the columnar positioning block at one end of the elastic rope through the positioning tube group, the limit bead, and the pressing block, thereby achieving the effect of fixing the tester's legs. Compared with the traditional sit-and-reach assessment device, the standardization of the measurement action is guaranteed, and this new design is stable. The fixed legs greatly improve the accuracy of the measurement and provide more reliable data for evaluating the body flexibility of the tester. Secondly, the design of the positioning cylinder group makes the fixing operation simpler and faster. When the legs need to be fixed, just insert the columnar positioning block into the positioning cylinder. The limit bead automatically snaps into the arc groove of the columnar positioning block under the action of the pressing block to ensure a firm fixation. The traditional device needs to use complex straps or clamps to fix the legs, which is cumbersome and time-consuming. This newly designed fast fixing method saves time and improves test efficiency. It is especially suitable for large-scale sports test scenarios. In addition, the tester can rotate the retractable cover to stop the retractable cover from interfering with the resistance ring, thereby causing the resistance ring to limit the length of the elastic rope. The use of the elastic rope enables the fixing device to adapt to testers of different body shapes. The elastic rope can be stretched and adjusted to a certain extent according to the size and shape of the tester's legs to ensure the tightness and comfort of the fixation. The traditional fixing method has poor adaptability to testers of different body shapes, and too tight or too loose fixation will affect the measurement effect. The newly designed elastic rope fixing method can better adapt to testers of various body shapes and improve the versatility of the device.

[0017] 2. Through the setting of the deceleration component, after the tester pushes the L-shaped slide plate for testing, the contracted coil spring wheel group will elastically stretch through the transmission belt and the limit block to push the L-shaped slide plate to reset. If the L-shaped slide plate moves faster, it is not easy to count the measured value of the tester's sitting forward flexion. At the same time, the fast-moving L-shaped slide plate will hit the tester, causing the tester to be injured by the impact. The device is set by the speed measuring wheel, the positioning rod, the positioning plate group, the limit card strip, and the limit plate. When the coil spring wheel group pushes the L-shaped slide plate to reset through the transmission belt and the limit card block, the speed measuring wheel will drive the positioning plate group to rotate synchronously through the positioning rod, and the positioning plate group drives the limit card strip to rotate rapidly, so that the limit card strip rotates away from the positioning plate group under the action of eccentricity, and then the limit card strip hits the inner wall of the limit plate, so that the L-shaped slide plate is quickly reset due to the stretching of the coil spring, which is different from the traditional sitting forward flexion test. Compared with the traditional evaluation device, the traditional device lacks a response mechanism for the rapid movement of the L-shaped skateboard. Once an unexpected situation occurs, the tester is prone to injury. The series of components in the device cooperate with each other to form an active safety protection mechanism, which provides more reliable protection for the tester. The speed measuring wheel can accurately sense the moving speed of the skateboard and provide accurate signals for subsequent control actions. The positioning rod transmits the movement of the speed measuring wheel to the positioning disk group to ensure the timeliness and accuracy of the control action. The synergistic effect of the positioning disk group, the limit strip and the limiting disk can accurately control the reset speed of the skateboard, avoiding the influence of rapid reset on the measurement results, making the measurement values ​​more reliable. The precise measurement of the speed measuring wheel, the transmission effect of the positioning rod, the rotation control of the positioning disk group, the centrifugal effect of the limit strip and the limiting function of the limiting disk, all cooperate with each other to achieve precise control of the skateboard reset process.

[0018] In addition, some traditional sitting forward flexion evaluation devices need to be manually reset after the test is completed, while this device can use the elasticity of the coil spring wheel group, the transmission belt, and the limit block to automatically reset the L-shaped slide plate, saving the test interval time, allowing the test to be carried out more continuously, improving the overall test efficiency, and avoiding the inconsistency caused by manual operation. At the same time, combined with the speed reduction effect of the upper section, the reset speed of the L-shaped slide plate is limited. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the position relationship of the overall device of the present invention; Figure 2 It is a cross-sectional view of the overall device of the present invention; Figure 3 For the present invention Figure 2 A magnified view of the structure at center; Figure 4 For the present invention Figure 2 A magnified view of the structure at B in the middle; Figure 5 For the present invention Figure 2 A magnified view of the structure at C in the middle; Figure 6 It is an exploded view of the positioning rod, the positioning plate assembly, the limit clamping strip, and the limiting plate in the present invention; Figure 7 It is a schematic diagram of the position relationship among the positioning plate group, the limit clamping strip and the limiting plate in the present invention; Figure 8 It is a schematic diagram of the positional relationship among the load-bearing plate, the fixing assembly and the length adjustment assembly in the present invention; Fig. 9 For the present invention Figure 8 A magnified view of the structure at D in the middle; Fig.10 For the present invention Figure 8 Enlarged view of the structure at E in the middle; Fig.11 It is an exploded view of the shrink cover and the abutment ring of the present invention.

[0020] Reference numerals: 11, load-bearing plate; 12, measuring block; 13, L-shaped slide plate; The deceleration assembly includes: 21, a coil spring wheel assembly; 221, a transmission belt; 222, a limit block; 231, a speed measuring wheel; 232, a positioning rod; 24, a positioning plate assembly; 25, a limit bar; 26, a limiting plate; The fixing assembly includes: 31, positioning cylinder group; 32, limiting bead; 33, distance increasing ring; 34, return spring; 35, pressing block; 36, elastic rope; 37, columnar positioning block; 38, arc groove; The length adjustment component includes: 41, a shrink cover; 42, a resistance ring. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] In the description of the present invention, the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0023] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0024] Implementation example Figures 1 to 11As shown, a sit-and-reach assessment device for sports assessment provided by an embodiment of the present invention includes a load-bearing plate 11, a measuring block 12 and an L-shaped slide plate 13. The measuring block 12 is arranged on the top of the load-bearing plate 11, and the L-shaped slide plate 13 is slidably connected to the top of the measuring block 12. A deceleration component for limiting the sliding speed of the L-shaped slide plate 13 is arranged inside the measuring block 12. A fixing component for limiting the movement norms of the measurer is arranged on the top of the load-bearing plate 11, and a length adjustment component for cooperating with the fixing component is arranged on the top of the load-bearing plate 11.

[0025] The deceleration component includes a coil spring wheel set 21, which is rotatably connected to the inside of the measuring block 12. The outer wall of the coil spring wheel set 21 is transmission-connected to a transmission belt 221, and the top of the transmission belt 221 is fixedly connected to a limit block 222. The inside of the measuring block 12 is rotationally connected to a speed measuring wheel 231, and positioning rods 232 are symmetrically fixedly connected to both sides of the speed measuring wheel 231.

[0026] The deceleration assembly also includes a positioning plate group 24, which is fixedly connected to the end of the positioning rod 232 away from the speed measuring wheel 231. The interior of the positioning plate group 24 is annularly distributed and rotatably connected to the limiting clamping strip 25, and the interior of the measuring block 12 is symmetrically fixedly connected with a limiting plate 26.

[0027] The fixing component includes a positioning cylinder group 31, the top of the load-bearing plate 11 is fixedly connected with the positioning cylinder group 31, the top of the positioning cylinder group 31 is provided with limiting grooves in a ring shape, and limiting beads 32 are slidably connected in the limiting grooves of the positioning cylinder group 31, the outer side of the positioning cylinder group 31 is fixedly connected with a distance increasing ring 33, the top of the distance increasing ring 33 is fixedly connected with a return spring 34, the end of the return spring 34 away from the distance increasing ring 33 is fixedly connected with a pressing block 35, and the pressing block 35 is slidably connected to the outer side of the positioning cylinder group 31.

[0028] The fixing assembly also includes a columnar positioning block 37 , which is slidably connected to the top of the positioning tube assembly 31 , to the top of which is fixedly connected an elastic rope 36 , and an arc-shaped groove 38 is formed on the outer wall of the columnar positioning block 37 .

[0029] The length adjustment assembly includes a retractable cover 41 , which is slidably connected to one end of the elastic rope 36 away from the columnar positioning block 37 , and an abutment ring 42 is disposed inside the load-bearing plate 11 .

[0030] The speed measuring wheel 231 is rotatably connected to the middle part of the transmission belt 221, so that the speed measuring wheel 231 can be rotated by the transmission belt 221 during the rotation of the coil spring wheel assembly 21, and the L-shaped slide plate 13 is clamped with the transmission belt 221 through the limit block 222, so that the transmission belt 221 can be moved by the limit block 222 during the movement of the L-shaped slide plate 13.

[0031] A torsion spring is arranged between the positioning disk group 24 and the limit clip 25, so that the limit clip 25 will not conflict with the limiting disk 26 when the positioning disk group 24 is not rotating at high speed. The positioning disk group 24 and the limit clip 25 are both rotatably connected to the inside of the limiting disk 26, so that the limit clip 25 will conflict with the limiting disk 26 when the positioning disk group 24 is not rotating at high speed.

[0032] The retractable cover 41 is threadedly connected to the top of the load-bearing plate 11, and the bottom of the retractable cover 41 is set to be inclined, so that the retractable cover 41 can tighten the top of the resistance ring 42 through the inclined bottom, and the end of the elastic rope 36 away from the columnar positioning block 37 is slidably connected to the inside of the resistance ring 42, so that the movement of the elastic rope 36 will be limited during the tightening of the resistance ring 42.

[0033] Working principle: In the initial state, the limit card strip 25 does not contact the limiting disk 26, the return spring 34 is not compressed, the inner wall of the contact ring 42 contacts the elastic rope 36, the pressing block 35 contacts the limit bead 32, and the bottom of the shrink cover 41 contacts the top of the contact ring 42.

[0034] When working, the tester first needs to pull the end of the elastic rope 36 close to the columnar positioning block 37 out of the interior of the positioning tube group 31. First, the tester needs to press the pressing block 35 in the direction of the distance increasing ring 33 to make the pressing block 35 descend along the outer wall of the positioning tube group 31. During this process, the pressing block 35 gradually compresses the return spring 34 in the direction of the distance increasing ring 33. When the top of the pressing block 35 is lower than the horizontal height of the limiting bead 32, a certain gap is generated between the inner wall of the pressing block 35 and the limiting bead 32. At this time, the tester can pull the columnar positioning block 37 away from the positioning tube group 31. Unlock the columnar positioning block 37: During the above movement, there is a certain gap between the pressing block 35 and the limiting bead 32. When the columnar positioning block 37 is pulled, the columnar positioning block 37 will resist the limiting bead 32 and move toward the pressing block 35, thereby achieving the purpose of smoothly pulling out the columnar positioning block 37.

[0035] Adjusting the length of the elastic rope 36: Due to the different body shapes of the testers, the length of the elastic rope 36 also needs to be different. Then the tester sits on the load-bearing plate 11, and then rotates the retractable cover 41 in the opposite direction to move the retractable cover 41 away from the load-bearing plate 11. Then, the bottom of the retractable cover 41 cannot contact the contact ring 42, and then the contact ring 42 cannot contact the elastic rope 36. At this time, the tester can pull the elastic rope 36 to adjust the length of the elastic rope 36; After the length of the elastic rope 36 is adjusted, the tester rotates the retractable cover 41 forward to make the retractable cover 41 gradually contact the contact ring 42. The retractable cover 41 is threadedly connected to the top of the load-bearing plate 11, and the bottom of the retractable cover 41 is set to be inclined. At this time, the retractable cover 41 tightens the top of the contact ring 42 through the inclined bottom, and the end of the elastic rope 36 away from the columnar positioning block 37 is slidably connected to the inside of the contact ring 42, so that the movement of the elastic rope 36 is limited during the tightening of the contact ring 42, thereby achieving the purpose of fixing the length of the elastic rope 36. The tester can rotate the retractable cover 41 to stop the retractable cover 41 from interfering with the resistance ring 42, thereby causing the resistance ring 42 to limit the length of the elastic rope 36. The traditional fixing method has poor adaptability to testers of different body shapes, and too tight or too loose fixing will affect the measurement effect. The newly designed elastic rope 36 fixing method can better adapt to testers of various body shapes, thereby improving the versatility of the device.

[0036] Fix the tester's legs: Then the tester repeats the above-mentioned action of unlocking the columnar positioning block 37. First, the pressing block 35 is pressed toward the distance increasing ring 33, so that the pressing block 35 descends along the outer wall of the positioning barrel set 31. During this process, the pressing block 35 gradually compresses the return spring 34 toward the distance increasing ring 33. When the top of the pressing block 35 is lower than the horizontal height of the limiting bead 32, a certain gap is generated between the inner wall of the pressing block 35 and the limiting bead 32. At this time, the tester can place the columnar positioning block 37 away from the inside of the positioning barrel set 31. After the columnar positioning block 37 is placed inside the positioning barrel set 31, the tester stops pressing the pressing block 35, and then the return spring 34 elastically stretches to push the pressing block 35 up. During the rising process, the pressing block 35 gradually hits the limiting bead 32, so that the limiting bead 32 slides along the limiting groove of the positioning barrel set 31 toward the columnar positioning block 37. Finally, the outer wall of the limiting bead 32 hits the arc groove 38 of the columnar positioning block 37, so that the pressing block 35 limits the movement of the columnar positioning block 37 through the limiting bead 32, thereby achieving the purpose of fixing the tester's leg. Finally, the tester repeats the above steps, fixing the thigh and calf in turn, thereby achieving the effect of fixing the tester's legs. Compared with the traditional sit-and-reach evaluation device, the standardization of the measurement action is guaranteed, and this new design greatly improves the accuracy of the measurement by stably fixing the legs, providing more reliable data for evaluating the tester's physical flexibility. Secondly, the design of the positioning cylinder group makes the fixing operation simpler and faster. When the legs need to be fixed, only the columnar positioning block 37 needs to be inserted into the positioning cylinder 31, and the limiting bead 32 is automatically inserted into the arc groove 38 of the columnar positioning block 37 under the action of the pressing block 35 to ensure a firm fixation. The traditional device needs to use complex straps or clamps to fix the legs, which is cumbersome and time-consuming. The new design of fast fixing saves time and improves test efficiency, and is particularly suitable for large-scale sports test scenarios. In addition, the use of the elastic rope 36 enables the fixing device to adapt to testers of different body shapes. The elastic rope 36 can be stretched and adjusted to a certain extent according to the size and shape of the tester's legs to ensure tightness and comfort of the fixation.

[0037] During the test, some conventional sitting forward flexion evaluation devices need to be manually reset after the test is completed. When the tester pushes the L-shaped slide plate 13 to slide, the L-shaped slide plate 13 is engaged with the transmission belt 221 through the limit block 222, so that the L-shaped slide plate 13 will drive the transmission belt 221 to move through the limit block 222 during the movement of the L-shaped slide plate 13, and then the transmission belt 221 will drive the coil spring wheel set 21 to elastically contract. When the tester stops pushing the L-shaped slide plate 13, the coil spring wheel set 21 elastically stretches to drive the transmission belt 221 to move in the opposite direction, and then the transmission belt 221 drives the L-shaped slide plate 13 to reset through the limit block 222, which saves the test interval time, makes the test more coherent, improves the overall test efficiency, avoids the inconsistency caused by manual operation, and at the same time, combined with the deceleration effect of the upper section, limits the reset speed of the L-shaped slide plate 13; Secondly, when the coil spring wheel set 21 indirectly drives the L-shaped slide plate 13 to reset, the L-shaped slide plate 13 is prevented from shrinking quickly and hitting the tester, because the speed measuring wheel 231 is rotatably connected to the middle part of the transmission belt 221, and the speed measuring wheel 231 is driven to rotate during the rotation of the transmission belt 221, and the speed measuring wheel 231 drives the positioning plate set 24 to rotate through the positioning rod 232; The positioning disk group 24 and the limit card strip 25 rotate inside the limiting disk 26. If the L-shaped slide plate 13 contracts rapidly, the L-shaped slide plate 13 will drive the transmission belt 221 to rotate rapidly through the limit card block 222, and the transmission belt 221 will drive the speed measuring wheel 231 and the positioning rod 232 to rotate rapidly, and finally the limit card strip 25 will rotate away from the positioning disk group 24 under the action of eccentricity, so that the limit card strip 25 will hit the inner wall of the limiting disk 26, and the L-shaped slide plate 13 will stop resetting rapidly. Compared with the traditional sitting forward flexion evaluation device, the traditional device lacks a response mechanism for the rapid movement of the L-shaped slide plate 13. Once an unexpected situation occurs, the tester is easily injured. The series of components in the device cooperate with each other to form an active safety protection mechanism, which provides more reliable protection for the tester, and the speed measuring wheel 231 can accurately sense the moving speed of the slide plate. When the L-shaped slide plate 13 is smoothly reset, since a torsion spring is provided between the positioning disk group 24 and the limiting clip 25, and the L-shaped slide plate 13 drives the positioning disk group 24 to rotate at a limited speed through the limiting clip 222, the transmission belt 221, and the speed measuring wheel 231, the speed at which the positioning rod 232 drives the positioning disk group 24 to rotate is less than the tension of the torsion spring between the positioning disk group 24 and the limiting clip 25, so that the positioning rod 232 drives the positioning disk group 24 and the limiting clip 25 to rotate normally inside the limiting disk 26.

[0038] For those skilled in the art, although several embodiments and examples of the present invention are described, these embodiments and examples are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and changes can be made without departing from the scope of the subject matter of the invention. These embodiments and their variations are included in the scope and subject matter of the invention, and are included in the invention described in the claims and the scope of their equivalents.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A sit-and-reach test device for sports assessment, comprising a load-bearing plate (11), a measuring block (12) and an L-shaped slide plate (13), wherein the measuring block (12) is arranged on the top of the load-bearing plate (11), and the L-shaped slide plate (13) is slidably connected to the top of the measuring block (12), characterized in that: A deceleration component for limiting the sliding speed of the L-shaped slide plate (13) is arranged inside the measuring block (12), a fixing component for limiting the movement norms of the measurer is arranged on the top of the load-bearing plate (11), and a length adjustment component for cooperating with the fixing component for fixing is arranged on the top of the load-bearing plate (11).

2. A sit-and-reach test device for sports assessment according to claim 1, characterized in that: The deceleration assembly comprises a coil spring wheel assembly (21), the coil spring wheel assembly (21) is rotatably connected to the interior of a measuring block (12), an outer wall of the coil spring wheel assembly (21) is transmission-connected to a transmission belt (221), a top of the transmission belt (221) is fixedly connected to a limit clamping block (222), a speed measuring wheel (231) is rotationally connected to the interior of the measuring block (12), and positioning rods (232) are symmetrically fixedly connected to both sides of the speed measuring wheel (231).

3. A sit-and-reach test device for sports assessment according to claim 2, characterized in that: The deceleration assembly further comprises a positioning disc group (24), the positioning disc group (24) being fixedly connected to one end of the positioning rod (232) away from the speed measuring wheel (231), the interior of the positioning disc group (24) being rotatably connected to a limiting clamping strip (25) in an annular arrangement, and the interior of the measuring block (12) being symmetrically fixedly connected to a limiting disc (26).

4. The sit-and-reach test device for sports assessment according to claim 1, characterized in that: The fixing assembly comprises a positioning cylinder group (31), the top of the load-bearing plate (11) is fixedly connected to the positioning cylinder group (31), the top of the positioning cylinder group (31) is provided with limiting grooves distributed in an annular manner, limiting beads (32) are slidably connected in the limiting grooves of the positioning cylinder group (31), the outer side of the positioning cylinder group (31) is fixedly connected to a distance increasing ring (33), the top of the distance increasing ring (33) is fixedly connected to a return spring (34), one end of the return spring (34) away from the distance increasing ring (33) is fixedly connected to a pressing block (35), and the pressing block (35) is slidably connected to the outer side of the positioning cylinder group (31).

5. The sit-and-reach test device for sports assessment according to claim 4, characterized in that: The fixing assembly further comprises a columnar positioning block (37), the columnar positioning block (37) being slidably connected to the top of the positioning tube assembly (31), an elastic rope (36) being fixedly connected to the top of the columnar positioning block (37), and an arc-shaped groove (38) being formed on the outer wall of the columnar positioning block (37).

6. The sit-and-reach test device for sports assessment according to claim 5, characterized in that: The length adjustment component comprises a retractable cover (41), the retractable cover (41) being slidably connected to an end of the elastic rope (36) away from the columnar positioning block (37), and a resistance ring (42) is arranged inside the load-bearing plate (11).

7. The sit-and-reach test device for sports assessment according to claim 2, characterized in that: The speed measuring wheel (231) is rotatably connected to the middle portion of the transmission belt (221), and the L-shaped slide plate (13) is clamped to the transmission belt (221) via a limiting clamping block (222).

8. The sit-and-reach test device for sports assessment according to claim 3, characterized in that: A torsion spring is provided between the positioning disc set (24) and the limiting clamping strip (25), and the positioning disc set (24) and the limiting clamping strip (25) are both rotatably connected to the interior of the limiting disc (26).

9. The sit-and-reach test device for sports assessment according to claim 6, characterized in that: The shrink cover (41) is threadedly connected to the top of the load-bearing plate (11), and the bottom of the shrink cover (41) is arranged to be inclined. One end of the elastic rope (36) away from the columnar positioning block (37) is slidably connected to the inside of the abutment ring (42).

Images