Foldable sit-and-reach testing device
By designing a foldable sit-and-reach test device, the problem of large device space occupation was solved by utilizing a folding structure and detachable parts, thereby improving test stability and portability.
Patent Information
- Application Number
- CN202422809263.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-11-18
AI Technical Summary
Existing sit-and-reach testing devices occupy a large space when not in use, making them difficult to store and transport conveniently.
A foldable seated forward flexion testing device was designed. Through a foldable foot pedal, a detachable measuring guide rod, and a sliding vernier slide, combined with limiting side plates, movable hinge plates, guide arms, and support arms, the device can be folded and disassembled, reducing the space occupied.
It achieves stability and measurement accuracy of the pedals during testing, while significantly reducing the device size during storage, thus improving portability and ease of transportation and storage.
Smart Images
Figure CN223569313U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of sports equipment, in particular to a foldable sit-and-reach testing device. BACKGROUND
[0002] In the physical fitness test project of primary and secondary schools, sit-and-reach is included, and a sit-and-reach tester is used. The test purpose is to measure the activity range of trunk, waist, hip and other joints in a static state, mainly reflecting the flexibility and elasticity of joints, ligaments and muscles of these parts and the development level of body flexibility.
[0003] The prior art sit-and-reach testing device includes a sitting and lying platform, a foot pedal plate fixed to the sitting and lying platform and perpendicular to the sitting and lying platform, a measurement guide rod is installed on the top of the foot pedal plate, and a vernier slide plate for finger abutment is slidably connected to the measurement guide rod. However, the foot pedal plate and the sitting and lying platform are fixed and integrated, and when not in use, they occupy a large amount of space and are inconvenient to store or transport, so further improvement is needed. CONTENT OF THE INVENTION
[0004] In order to reduce the space occupied by the sit-and-reach testing device when it is stored, the present application provides a foldable sit-and-reach testing device.
[0005] The foldable sit-and-reach testing device provided by the present application adopts the following technical solution:
[0006] A foldable sit-and-reach testing device includes a sitting and lying platform, a foot pedal plate foldably connected to the sitting and lying platform, a measurement guide rod detachably connected to the foot pedal plate, and a vernier slide plate slidably connected to the measurement guide rod. The front surface of the sitting and lying platform protrudes and is fixedly connected with a limiting side piece located outside the foot pedal plate. The length direction of the limiting side piece is parallel to the length direction of the sitting and lying platform. The lower end of the foot pedal plate in a vertical state is hinged to the tail end of the limiting side piece. The limiting side piece is provided with a limiting sliding groove extending along the length direction. An active hinge piece is arranged between the foot pedal plate and the limiting side piece. One end of the active hinge piece is hinged to the free end of the foot pedal plate. The other end of the active hinge piece is provided with a first bolt slidably arranged in the limiting sliding groove. The nut end surface of the first bolt abuts against the outer wall of the limiting side piece.
[0007] By adopting the technical scheme, in the test state, the footrest plate is in a vertical state, the end surface of the nut of the first bolt abuts against the outer wall of the limiting side piece to limit the sliding of the movable hinged piece in a damping form, the stability and reliability of the footrest plate are ensured, the measuring guide rod is installed on the footrest plate, when the sitting and lying body forward bending test device needs to be stored, the measuring guide rod is disassembled, the first bolt is loosened, the end surface of the nut of the first bolt is separated from the limiting side piece, the sliding of the lower end of the movable hinged piece is released, then the first bolt is pushed to slide towards the footrest plate, the free end of the footrest plate is pushed to fold forward to a horizontal state by the movable hinged piece, the foot surface of the footrest plate is attached to the front surface of the sitting and lying platform, and the space occupied by the sitting and lying body forward bending test device is reduced.
[0008] Preferably, the back upper portion of the footrest plate is hinged with a guide arm, the front surface of the sitting and lying platform is hinged with a support arm, the other end of the support arm is hinged with the other end of the guide arm, when the footrest plate is folded to a vertical state, the guide arm is in a horizontal state, the upper end surface of the support arm in the horizontal state is provided with an installation slot along the length direction of the sitting and lying platform, the measuring guide rod is inserted into the installation slot, the side wall of the guide arm is threaded with a second bolt extending into the installation slot, and the threaded segment end surface of the second bolt abuts against the side wall of the measuring guide rod.
[0009] By adopting the technical scheme, the cooperation of the guide arm and the support arm makes the folding of the footrest plate more stable, and avoids the safety hazard caused by unstable structure. In addition, when the footrest plate is folded to a vertical state, the guide arm is in a horizontal state, the measuring guide rod is directly placed on the installation slot, and the second bolt is tightened, the threaded segment end surface of the second bolt abuts against the side wall of the measuring guide rod to realize the fixation of the measuring guide rod and the guide arm in a damping form, the quick installation and disassembly of the measuring guide rod are facilitated, and the portability of the equipment is improved.
[0010] Preferably, the bottom inner wall of the installation slot is protrusively fixed with a positioning protruding column, and the lower end surface of the measuring guide rod is provided with a positioning hole for inserting the positioning protruding column.
[0011] By adopting the technical scheme, when the measuring guide rod is inserted into the installation slot, the positioning protruding column cooperates with the positioning hole to ensure the stable installation of the measuring guide rod, avoid the deviation or falling off in the measurement process, and improve the measurement accuracy and reliability.
[0012] Preferably, the sitting and lying platform comprises a head plate, an intermediate plate hinged to one side of the head plate, and a tail plate hinged to the side of the intermediate plate away from the head plate, the free end of the head plate can be folded backward so that the back surface of the head plate faces the back surface of the intermediate plate, the free end of the tail plate can be folded forward so that the front surface of the tail plate faces the front surface of the intermediate plate, and the footrest plate can be foldably connected to the head plate.
[0013] By adopting the technical scheme, the sitting and lying platform is composed of a head plate, an intermediate plate and a tail plate, when the sitting and lying body forward bending test device is stored, the foot rest plate is first folded, so that the foot supporting surface of the foot rest plate faces the front surface of the head plate, then the head plate is folded backward so that the back surface thereof faces the back surface of the intermediate plate, and the tail plate can be folded forward so that the front surface thereof faces the front surface of the intermediate plate, thereby effectively reducing the volume of the whole device when it is stored, and improving portability, facilitating transportation and storage.
[0014] Preferably, two outer walls of the side of the head plate close to the intermediate plate are each hinged with a head hinge plate, and the other end of the head hinge plate is hinged to the outer wall of the side of the intermediate plate.
[0015] By adopting the technical scheme, the head plate and the intermediate plate are hingedly connected through the head hinge plate, so that the head plate can be folded backward by 180°, thereby reducing the volume of the whole sitting and lying body forward bending test device when it is stored, and improving space utilization.
[0016] Preferably, two outer walls of the side of the tail plate close to the intermediate plate are each hingedly connected with a tail hinge plate, and the other end of the tail hinge plate is hingedly connected to the outer wall of the side of the intermediate plate.
[0017] By adopting the technical scheme, the tail plate and the intermediate plate are hingedly connected through the tail hinge plate, so that the tail plate can be folded forward by 180°.
[0018] Preferably, the outer side wall of the intermediate plate is rotationally connected with a head lock rod, the outer side wall of the head plate protrudes to fixedly connect a limiting protruding rod, and the head lock rod has a hook groove at one end for hooking the limiting protruding rod.
[0019] By adopting the technical scheme, when the head plate is folded backward to face the back surface of the intermediate plate, the head lock rod rotates around the outer side wall of the intermediate plate, so that the hook groove at one end of the head lock rod hooks the limiting protruding rod on the outer side wall of the head plate, thereby realizing the locking between the head plate and the intermediate plate, preventing the head plate from being accidentally unfolded during transportation or carrying. Meanwhile, the structure is simple, the operation is convenient, and the user can quickly complete the locking and unlocking actions, improving the user experience.
[0020] Preferably, the outer side wall of the intermediate plate is rotationally connected with a tail lock rod, the outer side wall of the tail plate protrudes to fixedly connect a limiting protruding rod, and the tail lock rod has a hook groove at one end for hooking the limiting protruding rod.
[0021] By adopting the technical scheme, when the tail plate is folded forward to face the front surface of the intermediate plate, the tail lock rod rotates around the outer side wall of the intermediate plate, so that the hook groove at one end of the tail lock rod hooks the limiting protruding rod on the outer side wall of the tail plate, thereby realizing the locking between the tail plate and the intermediate plate, preventing the tail plate from being accidentally unfolded during transportation or carrying.
[0022] Preferably, the outer side wall of the intermediate plate is fixedly connected with a handle strap.
[0023] By adopting the technical scheme, the handle belt is arranged to facilitate a user to carry the whole sitting body forward bending test device, especially after the device is folded and stored, the volume is reduced, the weight is relatively concentrated, the handle belt can make the user more easily lift and move the device, and the portability is improved.
[0024] In summary, the utility model has the following beneficial effects:
[0025] 1. In the test state, the foot pedal plate is in a vertical state, the nut end face of the first bolt abuts against the outer wall of the limiting side piece to limit the sliding of the movable hinge piece in a damping form, ensuring the stable and reliable foot pedal plate, and the measuring guide rod is installed on the foot pedal plate. When the sitting body forward bending test device needs to be stored, the measuring guide rod is disassembled, the first bolt is loosened, the nut end face of the first bolt is separated from the limiting side piece, the sliding of the lower end of the movable hinge piece is released, then the first bolt is pushed to slide towards the foot pedal plate, the free end of the foot pedal plate is pushed to fold forward to a horizontal state by the movable hinge piece, the foot surface of the foot pedal plate is attached to the front surface of the sitting and lying platform, and the space occupied by the sitting body forward bending test device is reduced.
[0026] 2. The cooperation of the guide arm and the supporting arm makes the foot pedal plate more stable during folding, avoids the safety hazard caused by unstable structure, and besides, when the foot pedal plate is folded to a vertical state, the guide arm is in a horizontal state, the measuring guide rod is directly placed on the installation slot, and the second bolt is tightened, the threaded segment end face of the second bolt abuts against the side wall of the measuring guide rod to realize the fixation of the measuring guide rod and the guide arm in a damping form, the quick installation and disassembly of the measuring guide rod are facilitated, and the portability of the equipment is improved.
[0027] 3. The sitting and lying platform is composed of a head plate, an intermediate plate and a tail plate, when the sitting body forward bending test device is stored, the foot pedal plate is first folded, the foot surface of the foot pedal plate faces the front surface of the head plate, then the head plate is folded backward, the back surface of the head plate faces the back surface of the intermediate plate, the tail plate can be folded forward, the front surface of the tail plate faces the front surface of the intermediate plate, the volume of the whole device during storage is effectively reduced, and the portability is improved, facilitating transportation and storage. BRIEF DESCRIPTION OF DRAWINGS
[0028] Figure 1 It is a use state schematic view of a foldable sitting body forward bending test device.
[0029] Figure 2 It is a folding state schematic view of a foldable sitting body forward bending test device.
[0030] Figure 3 It is a connection structure schematic view of a foot pedal plate and a measuring guide rod.
[0031] Figure 4 It is a structure schematic view of a guide arm.
[0032] Figure 5 is a structural diagram of a measurement guide rod.
[0033] In the figure, 1, sitting and lying platform; 11, head plate; 111, limiting convex rod; 112, limiting side sheet; 113, limiting sliding groove; 114, supporting arm; 12, intermediate plate; 121, transfer shaft; 122, head locking rod; 123, tail locking rod; 124, handle belt; 13, tail plate; 14, rubber foot pad; 15, head hinged sheet; 16, tail hinged sheet; 2, foot pedal plate; 21, movable hinged sheet; 22, first bolt; 23, guide arm; 24, installation slot; 25, second bolt; 26, positioning convex column; 3, measurement guide rod; 31, positioning hole; 32, mounting seat; 33, digital display instrument; 4, vernier sliding plate. DETAILED DESCRIPTION
[0034] The following will be described in detail with reference to the accompanying drawings. Figures 1-5 The application is further described in detail.
[0035] The embodiment of the application discloses a foldable sitting body forward bending test device, which refers to Figure 1 , comprising a sitting and lying platform 1, a foot pedal plate 2 foldably connected to the sitting and lying platform 1, a measurement guide rod 3 detachably connected to the foot pedal plate 2 and a vernier sliding plate 4 slidingly connected to the measurement guide rod 3.
[0036] The following will be described in detail with reference to the accompanying drawings. Figure 1 , Figure 2 The sitting and lying platform 1 comprises a head plate 11, an intermediate plate 12 hinged to the tail end of the head plate 11 and a tail plate 13 hinged to the tail end of the intermediate plate 12, the back surface of the head plate 11, the back surface of the intermediate plate 12 and the back surface of the tail plate 13 are all fixed with rubber foot pads 14, and the front surface of the intermediate plate 12 and the front surface of the tail plate 13 are both provided with elastic soft bags. The tail end of the head plate 11 is hinged with head hinged sheets 15 on both outer side walls, the other end of the head hinged sheet 15 is hinged to the head end outer side wall of the intermediate plate 12, so that the head end of the head plate 11 is folded back by 180°, so that the back surface of the head plate 11 faces the back surface of the intermediate plate 12, and the rubber foot pad 14 of the head plate 11 abuts against the rubber foot pad 14 of the intermediate plate 12. The head end of the tail plate 13 is hinged with tail hinged sheets 16 on both outer side walls, the other end of the tail hinged sheet 16 is hinged to the tail end outer side wall of the intermediate plate 12, and the tail end of the tail plate 13 can be folded forward by 180°, so that the front surface of the tail plate 13 faces the front surface of the intermediate plate 12, and the elastic soft bag of the tail plate 13 abuts against the elastic soft bag of the intermediate plate 12.
[0037] The middle part of the outer wall of the intermediate plate 12 is fixedly connected with a transfer shaft 121, the transfer shaft 121 is rotatably sleeved with a head lock rod 122 and a tail lock rod 123, and the free end of the head lock rod 122 and the free end of the tail lock rod 123 are provided with hook grooves. The middle part of the outer wall of the head plate 11 and the middle part of the outer wall of the tail plate 13 are both protrusively fixed with a limiting protruding rod 111, after the head plate 11 is folded, the head lock rod 122 is rotated, so that the hook groove at one end of the head lock rod 122 is hooked on the limiting protruding rod 111 on the head plate 11. After the tail plate 13 is folded, the tail lock rod 123 is rotated, so that the hook groove at one end of the tail lock rod 123 is hooked on the limiting protruding rod 111 on the tail plate 13. The outer wall of the intermediate plate 12 is fixedly connected with a handle strap 124.
[0038] With reference to Figure 3 , the foot plate 2 is foldably connected to the front surface of the head plate 11, and the foot plate 2 is in a vertical state in a use state and can be folded by 90° towards the tail plate 13 in a storage state. Specifically, the front surface of the head plate 11 is protrusively fixedly connected with a limiting side piece 112 located on the outer side of the foot plate 2, the length direction of the limiting side piece 112 is parallel to the length direction of the sitting and lying platform 1, the lower end of the foot plate 2 in a vertical state is hingedly connected to the tail end of the limiting side piece 112, and the limiting side piece 112 is provided with a limiting sliding groove 113 extending along the length direction. An active hinged piece 21 is arranged between the foot plate 2 and the limiting side piece 112, one end of the active hinged piece 21 is hingedly connected to the upper end of the foot plate 2, and the other end of the active hinged piece 21 is provided with a first bolt 22 slidingly penetrating the limiting sliding groove 113, and the nut end surface of the first bolt 22 abuts against the outer wall of the limiting side piece 112.
[0039] With reference to Figure 4 , Figure 5 , the upper part of the back surface of the foot plate 2 is hingedly connected with a guide arm 23, the head end of the front surface of the head plate 11 is hingedly connected with a supporting arm 114, the other end of the supporting arm 114 and the other end of the guide arm 23 are hingedly connected, and when the foot plate 2 is folded to a vertical state, the guide arm 23 is in a horizontal state and the supporting arm 114 is in a vertical state, so that the included angle between the guide arm 23 and the supporting arm 114 is 90°. The upper end surface of the supporting arm 114 in a horizontal state is provided with a mounting slot 24 extending along the length direction of the sitting and lying platform 1, a measuring guide rod 3 is inserted into the mounting slot 24, a second bolt 25 extending to the mounting slot 24 is threadedly penetrating the side wall of the guide arm 23, and the threaded segment end surface of the second bolt 25 abuts against the side wall of the measuring guide rod 3. In other embodiments, the outer wall of the measuring guide rod 3 is provided with a limiting hole for the threaded segment of the second bolt 25 to penetrate, and the bottom inner wall of the mounting slot 24 is protrusively fixed with a positioning protruding column 26, and the lower end surface of the measuring guide rod 3 is provided with a positioning hole 31 for the positioning protruding column 26 to penetrate.
[0040] With reference to Figure 3The end of the measuring guide rod 3 away from the tail plate 13 is fixedly connected with a mounting seat 32, the mounting seat 32 has a slot, the mounting seat 32 is provided with a digital display instrument 33 inserted into the slot, the digital display instrument 33 is used for displaying the sliding distance of the cursor sliding plate 4, thereby displaying the test value of the sitting body forward bending.
[0041] The implementation principle of the foldable sitting body forward bending test device is as follows: when the sitting body forward bending test device is stored, the second bolt 25 is loosened, the measuring guide rod 3 is disassembled, the first bolt 22 is loosened, the screw cap end surface of the first bolt 22 is separated from the limiting side piece 112, thereby releasing the sliding restriction on the lower end of the movable hinged piece 21, then the first bolt 22 is pushed to slide towards the footrest plate 2, the free end of the footrest plate 2 is pushed to fold 90° to the horizontal state by the movable hinged piece 21, the foot surface of the footrest plate 2 faces the front surface of the head plate 11, then the head plate 11 is folded back 180°, the back surface of the head plate 11 is opposite to the back surface of the middle plate 12, the tail plate 13 is folded forward 180°, the front surface of the tail plate 13 is opposite to the front surface of the middle plate 12, finally, the head lock rod 122 and the tail lock rod 123 are rotated, the hook groove at one end of the head lock rod 122 is hooked on the limiting convex rod 111 on the head plate 11, the hook groove at one end of the tail lock rod 123 is hooked on the limiting convex rod 111 on the tail plate 13, thereby effectively reducing the volume of the whole device when it is stored, and improving the portability, facilitating transportation and storage.
[0042] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, therefore: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.
Claims
1. A foldable seated forward flexion testing device, characterized in that: The device includes a reclining platform (1), a footrest (2) foldably connected to the reclining platform (1), a measuring guide rod (3) detachably connected to the footrest (2), and a vernier slide plate (4) slidably connected to the measuring guide rod (3). A limiting side plate (112) is fixedly connected to the front of the reclining platform (1) and located outside the footrest (2). The length direction of the limiting side plate (112) is parallel to the length direction of the reclining platform (1). The lower end of the vertically positioned footrest (2) is hinged to the limiting side plate. At the tail end of 112), the limiting side plate (112) is provided with a limiting groove (113) extending along the length direction. A movable hinge plate (21) is provided between the foot pedal (2) and the limiting side plate (112). One end of the movable hinge plate (21) is hinged to the free end of the foot pedal (2). The other end of the movable hinge plate (21) is provided with a first bolt (22) that slides through the limiting groove (113). The nut end face of the first bolt (22) abuts against the outer wall of the limiting side plate (112).
2. The foldable seated forward flexion testing device according to claim 1, characterized in that: A guide arm (23) is hinged to the upper back of the foot pedal (2), and a support arm (114) is hinged to the front of the sitting / lying platform (1). The other end of the support arm (114) is hinged to the other end of the guide arm (23). When the foot pedal (2) is folded into a vertical state, the guide arm (23) is in a horizontal state. The upper end face of the horizontal support arm (114) is provided with an installation slot (24) along the length direction of the sitting / lying platform (1). The measuring guide rod (3) is inserted into the installation slot (24). The side wall of the guide arm (23) is threaded with a second bolt (25) extending to the installation slot (24). The end face of the threaded section of the second bolt (25) is pressed against the side wall of the measuring guide rod (3).
3. The foldable seated forward flexion testing device according to claim 2, characterized in that: The bottom inner wall of the mounting slot (24) is fixed with a positioning protrusion (26), and the lower end face of the measuring guide rod (3) is provided with a positioning hole (31) for the positioning protrusion (26) to be inserted.
4. The foldable seated forward flexion testing device according to claim 2, characterized in that: The sitting / lying platform (1) includes a headboard (11), a middle plate (12) hinged to one side of the headboard (11), and a tailboard (13) hinged to the middle plate (12) away from the headboard (11). The free end of the headboard (11) can be folded backward so that the back of the headboard (11) faces the back of the middle plate (12). The free end of the tailboard (13) can be folded forward so that the front of the tailboard (13) faces the front of the middle plate (12). The foot pedal (2) can be folded and connected to the headboard (11).
5. The foldable seated forward flexion testing device according to claim 4, characterized in that: The head plate (11) has two outer walls on one side near the middle plate (12) with head hinge pieces (15) hinged to each other. The other end of the head hinge piece (15) is hinged to one side of the outer wall of the middle plate (12).
6. The foldable seated forward flexion testing device according to claim 4, characterized in that: The tail plate (13) has two outer walls on one side near the middle plate (12) with tail hinge pieces (16) hinged to each other. The other end of the tail hinge piece (16) is hinged to one side of the outer wall of the middle plate (12).
7. A foldable seated forward flexion testing device according to claim 4, characterized in that: The outer side wall of the intermediate plate (12) is rotatably connected to a head lock rod (122), and the outer side wall of the head plate (11) protrudes and fixes a limiting protrusion rod (111). One end of the head lock rod (122) has a hook groove that is hooked onto the limiting protrusion rod (111).
8. A foldable seated forward flexion testing device according to claim 4, characterized in that: The outer side wall of the intermediate plate (12) is rotatably connected to a tail lock rod (123), and the outer side wall of the tail plate (13) protrudes and is fixed with a limiting protrusion rod (111). One end of the tail lock rod (123) has a hook groove that is hooked onto the limiting protrusion rod (111).
9. A foldable seated forward flexion testing device according to claim 7 or 8, characterized in that: A handle (124) is fixedly connected to the outer wall of the intermediate plate (12).