CN219848083U

CN219848083U - Testing device for seat body forward-bending

Info

Publication number: CN219848083U
Application number: CN202223378342.6U
Authority: CN
Inventors: 吕红斌; 尹碧昌; 张荷; 官昌标; 陈圣涛
Original assignee: Central South University; Xiangya Hospital of Central South University
Current assignee: Central South University; Xiangya Hospital of Central South University
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-10-20
Anticipated expiration: 2032-12-14

Abstract

The utility model discloses a seat body forward-bending testing device which comprises a seat plate, two brackets respectively arranged at two sides of the front end of the seat plate and a resistance plate for a tester to push against with both hands, wherein the resistance plate is horizontally arranged between the two brackets in a sliding manner, a foot supporting plate and a knee straightening mechanism for pressing down a knee to straighten the leg are arranged on the seat plate, the foot supporting plate is arranged between the two brackets, and a resistance mechanism for providing resistance for the resistance plate in the forward moving process is arranged on the brackets. The seat body forward-bending testing device has the advantages of simple structure, head collision prevention, capability of improving testing accuracy and the like.

Description

Testing device for seat body forward-bending

Technical Field

The utility model relates to the technical field of sports tests, in particular to a seat body forward-bending testing device.

Background

The anteversion of the sitting position is a physical health test item for primary and middle schools, and the test purpose of the sitting position is to measure the possible activity amplitude of joints such as trunk, waist, hip and the like in a static state, and mainly reflect the extensibility and elasticity of joints, ligaments and muscles of the parts and the development level of the flexibility quality of the body.

The conventional seat body forward-bending testing device, as shown in fig. 1, comprises a seat, a support and a push plate, wherein the support is arranged in the middle of the seat in the width direction, a horizontal rod is arranged on the support in a sliding manner, and the push plate is arranged at one end of the horizontal guide rod, which faces the rear end of the seat. During the test, the student sits at the appointed position on the seat, and the seat body is anteverted, and in the anteverted process, both hands promote push pedal and horizontal guide arm and slide to measure the maximum sliding distance of push pedal through the scale on the horizontal guide arm to measure the range of motion of joints such as truck, waist, hip. The existing seat body forward-bending testing device has the following defects:

1) In the forward bending process, under the limiting action of the bracket, the head is easy to collide, and the injury is caused;

2) The knee-free straightening mechanism presses the two legs by a tester or independently controls the two legs by students to straighten the two legs, so that knee bending actions with different degrees exist, and the testing accuracy is affected;

3) The push plate is arranged on the horizontal guide rod in a sliding way, basically has no resistance effect, and easily causes inertia forward sliding in the test, so that the test result is higher.

Disclosure of Invention

The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing the seat body forward-bending testing device which has a simple structure, prevents the collision of the head and can improve the testing accuracy.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a testing arrangement of seat body anteversion, includes seat, two sets up the support in seat front end both sides respectively and supplies the resistance board that the tester's both hands supported and push away, the resistance board horizontal slip sets up between two supports, be equipped with on the seat and support the sole and be used for pushing down the knee and make the knee straightening mechanism that the leg straightened, it is located between two supports to support the sole, be equipped with the resistance mechanism that provides resistance for the resistance board at the anteversion in-process on the support.

As a further improvement of the above technical scheme:

the resistance mechanism comprises a retractor, a braid and two reversing rollers, wherein the retractor is arranged at the front end of the support, the two reversing rollers are arranged at the rear end of the support at intervals, the two ends of the braid are arranged on the retractor, the middle part of the braid is wound on the two reversing rollers, the resistance plate is provided with the resistance rollers, and the resistance rollers are propped against the braid between the two reversing rollers.

The retractor comprises an outer cover and a retractor shaft arranged in the outer cover, a coil spring is arranged between the retractor shaft and the outer cover, one end of the webbing is wound on the retractor shaft, and the other end of the webbing is arranged on the outer cover.

And a locking mechanism for locking the winding shaft when the winding shaft is suddenly accelerated is arranged in the outer cover.

The knee straightening mechanism comprises a knee pressing plate and two side supporting frames, wherein the bottoms of the two side supporting frames are respectively arranged on two sides of the seat plate, and the knee pressing plate is arranged between the two side supporting frames in a lifting and adjusting mode.

The side support is provided with a vertical guide rail, the knee pressing plate is arranged on the vertical guide rail in a sliding mode, and the knee pressing plate is provided with a locking mechanism for locking the knee pressing plate and the side support.

The seat plate is provided with a horizontal guide rail, and the side support is arranged on the horizontal guide rail in a sliding way.

The support comprises a vertical rod and a vertical rod, wherein the bottom of the vertical rod is fixed on a seat plate, the vertical rod is fixed at the top of the vertical rod, the resistance plate is slidably arranged on the vertical rod, and the resistance mechanism is arranged on the vertical rod.

The longitudinal rod is provided with a distance measuring mechanism for detecting the sliding distance of the resistance plate.

The top of the seat plate is provided with a soft cushion.

Compared with the prior art, the utility model has the advantages that:

the utility model discloses a testing arrangement of seat body anteversion, the use: the tester sits on the seat plate, and the feet are propped against the foot propping plate; straightening the legs of the tester through a knee straightening mechanism; then, the seat body of the tester is bent forward, the resistance plate is pushed by two hands, and the movement range of joints such as trunk, waist and hip of the tester is measured by the maximum sliding distance of the resistance plate in the pushing process. The two brackets are respectively arranged on two sides of the front end of the seat plate, the resistance plate is arranged between the two brackets in a sliding way, the problem of collision in the process that the trunk is pressed down and stretched forward is well solved, the testing process is safer, and the testing result is more real. The knee straightening mechanism is added, so that the knee joint in the test of a tester is in a straightened state, the problems of knee bending, unstable fixation, complicated adjustment and the like in the test process are solved, and the test accuracy is improved. The added resistance mechanism provides resistance for the resistance plate in the forward moving process, prevents the resistance plate from sliding forward under the action of inertia force, and avoids higher test performance.

Drawings

Fig. 1 is a schematic front view of a conventional seat body forward-bending test device.

Fig. 2 is a schematic perspective view of a seat body forward-bending testing device according to the present utility model.

FIG. 3 is a schematic perspective view of the resistance mechanism portion of the seat forward-flexing testing apparatus of the present utility model.

FIG. 4 is a schematic structural view of a resistance mechanism of a seat forward-flexing testing apparatus of the present utility model.

Fig. 5 is a perspective structural schematic view of a knee straightening mechanism of the seat forward-bending testing apparatus of the present utility model.

The reference numerals in the drawings denote:

1. a seat plate; 11. a horizontal guide rail; 2. a bracket; 21. a vertical rod; 22. a longitudinal bar; 3. a resistance plate; 31. a resistance roller; 4. foot supporting plates; 5. a knee straightening mechanism; 51. a knee-pressing plate; 52. a side support; 521. a vertical guide rail; 53. a locking mechanism; 6. a resistance mechanism; 61. a retractor; 611. an outer cover; 612. a winding shaft; 62. webbing belt; 63. a reversing roller; 7. a distance measuring mechanism; 8. and a soft cushion.

Detailed Description

The utility model will be described in further detail with reference to the drawings and the specific examples.

As used in this disclosure and in the claims, the terms "a," "an," "the," and/or "the" are not specific to a singular, but may include a plurality, unless the context clearly dictates otherwise. The terms "first," "second," and the like, as used in this disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

Fig. 2 to 5 show an embodiment of a seat forward-bending test device according to the present utility model, which comprises a seat 1, two brackets 2 respectively disposed on both sides of the front end of the seat 1, and a resistance plate 3 for a tester to push against with both hands, wherein the resistance plate 3 is horizontally slidably disposed between the two brackets 2, the seat 1 is provided with a foot supporting plate 4 and a knee straightening mechanism 5 for pressing down the knee to straighten the leg, the foot supporting plate 4 is disposed between the two brackets 2, and the brackets 2 are provided with a resistance mechanism 6 for providing resistance to the resistance plate 3 during forward movement.

The using process comprises the following steps: the tester sits on the seat plate 1, and the feet are propped against the foot propping plate 4; straightening the legs of the tester through a knee straightening mechanism 5; then, the seat body of the tester is bent forward, the resistance plate 3 is pushed by two hands, and the movement range of joints such as trunk, waist and hip of the tester is measured by the maximum sliding distance of the resistance plate 3 in the pushing process.

The two brackets 2 are respectively arranged on two sides of the front end of the seat plate 1, the resistance plate 3 is arranged between the two brackets 2 in a sliding way, the problem of collision in the process that the trunk is pressed down and stretched forward is well solved, the testing process is safer, and the testing result is more real. The added knee straightening mechanism 5 enables the knee joint in the test of a tester to be in a straightened state, solves the problems of knee bending, unstable fixation, complicated adjustment and the like in the test process, and improves the test accuracy. The added resistance mechanism 6 provides resistance for the resistance plate 3 in the forward moving process, prevents the resistance plate 3 from sliding forward under the action of inertia force, and avoids higher test results.

In this embodiment, as shown in fig. 3 and 4, the resistance mechanism 6 includes a retractor 61, a webbing 62, and two reversing rollers 63, the retractor 61 is disposed at the front end of the support 2, the two reversing rollers 63 are disposed at the rear end of the support 2 at intervals, two ends of the webbing 62 are disposed on the retractor 61, the middle part is wound on the two reversing rollers 63, the resistance plate 3 is provided with a resistance roller 31, and the resistance roller 31 is pushed against the webbing 62 between the two reversing rollers 63. The webbing 62 provides resistance to the resistive roller 31 during the forward movement, preventing the resistive plate 3 from sliding forward under inertial forces. The two sides of the resistance plate 3 are provided with resistance rollers 31, and the resistance rollers 31 are slidably arranged on the corresponding brackets 2.

In this embodiment, the retractor 61 includes a housing 611 and a retractor shaft 612 disposed in the housing 611, a coil spring (not shown in the drawings) is disposed between the retractor shaft 612 and the housing 611, and one end of the webbing 62 is wound around the retractor shaft 612 and the other end is disposed on the housing 611. A lock mechanism (not shown in the drawings, a conventional lock structure) for locking the winding shaft 612 when the winding shaft 612 is suddenly accelerated is provided in the housing 611. The resistance mechanism 6 simulates the resistance mechanism settings of an automobile seat belt. Under the effect of locking mechanism, prevent that the speed of resistance board 3 is too fast, stop the gambling and get it exquisite, when guaranteeing that the test result is accurate, maintain equity and equity.

In this embodiment, as shown in fig. 5, the knee straightening mechanism 5 includes a knee-pressing plate 51 and two side brackets 52, the bottoms of the two side brackets 52 are respectively disposed on two sides of the seat 1, and the knee-pressing plate 51 is disposed between the two side brackets 52 in a vertically adjustable manner. The knee joint is straightened by pressing down on the knee of the tester by pressing the knee plate 51. The knee pressing plate 51 can be adjusted in a lifting manner, and the first convenient adjustment of the downward pressure is the second convenient adjustment, so that the knee pressing plate is suitable for testers of different physique.

In this embodiment, the side bracket 52 is provided with a vertical rail 521, the knee-pressing plate 51 is slidably disposed on the vertical rail 521, and the knee-pressing plate 51 is provided with a locking mechanism 53 for locking the knee-pressing plate 51 and the side bracket 52. After the lifting position of the knee-pressing plate 51 is adjusted, it is locked by the locking mechanism 53. The locking mechanism 53 is a conventional mechanism having a locking function.

In this embodiment, the seat 1 is provided with a horizontal rail 11, and the side brackets 52 are slidably disposed on the horizontal rail 11. The bottoms of the two side brackets 52 are respectively arranged on the horizontal guide rails 11 on the two sides of the seat plate 1 in a sliding way, so that the knee straightening mechanism 5 can also be adjusted in the front-back position to adapt to users with different leg lengths.

In this embodiment, as shown in fig. 2, the bracket 2 includes a vertical rod 21 and a vertical rod 22, the bottom of the vertical rod 21 is fixed on the seat board 1, the vertical rod 22 is fixed on the top of the vertical rod 21 by the vertical rod 22, the resistance plate 3 is slidably disposed on the vertical rod 22, and the resistance mechanism 6 is disposed on the vertical rod 22. Specifically, the retractor 61 is provided at the front end of the side rail 22, and two reversing cylinders 63 are provided at the rear end of the side rail 22 at intervals. The longitudinal bar 22 is longitudinally arranged, and the longitudinal direction is the length direction of the seat plate 1.

In this embodiment, the vertical rod 22 is provided with a distance measuring mechanism 7 for detecting the sliding distance of the resistance plate 3. The distance measuring mechanism 7 is an infrared distance meter for detecting the translational distance of the resistance roller 31. Of course, in other embodiments, the sliding distance of the resistance plate 3 may be measured or checked by providing a scale on the side rail 22.

In this embodiment, the top of the seat 1 is provided with a cushion 8. The tester sits on the cushion 8 more comfortably.

While the utility model has been described in terms of preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the utility model. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims

1. A testing arrangement of seat body anteversion, characterized in that: including seat (1), two support (2) and confession tester's both hands support the resistance board (3) of pushing away in seat (1) front end both sides respectively, resistance board (3) horizontal slip sets up between two support (2), be equipped with on seat (1) support sole (4) and be used for pushing down knee and make leg straightening knee mechanism (5) that straighten, support sole (4) are located between two support (2), be equipped with on support (2) and provide resistance mechanism (6) of resistance board (3) at the antedisplacement in-process resistance.

2. A seat body forward-flexing test apparatus as defined in claim 1 wherein: resistance mechanism (6) are including coiler (61), meshbelt (62) and two switching-over cylinders (63), the front end of support (2) is located to coiler (61), two switching-over cylinder (63) interval sets up the rear end at support (2), on coiler (61) are located at the both ends of meshbelt (62), on two switching-over cylinders (63) are located around the middle part, be equipped with resistance cylinder (31) on resistance board (3), resistance cylinder (31) support pushes away on meshbelt (62) between two switching-over cylinders (63).

3. A seat body forward-flexing test apparatus as defined in claim 2 wherein: the retractor (61) comprises a housing (611) and a retractor shaft (612) arranged in the housing (611), a coil spring is arranged between the retractor shaft (612) and the housing (611), one end of the webbing (62) is wound on the retractor shaft (612), and the other end of the webbing is arranged on the housing (611).

4. A seat body forward-flexing testing device according to claim 3, wherein: a lock mechanism for locking the winding shaft (612) when the winding shaft (612) is suddenly accelerated is arranged in the outer cover (611).

5. A seat body forward flexion testing device as claimed in any one of claims 1 to 4 wherein: the knee straightening mechanism (5) comprises a knee pressing plate (51) and two side supporting frames (52), wherein the bottoms of the two side supporting frames (52) are respectively arranged on two sides of the seat plate (1), and the knee pressing plate (51) is arranged between the two side supporting frames (52) in a lifting and adjusting mode.

6. The seat body forward-flexing test device of claim 5, wherein: the knee pressing plate (51) is arranged on the vertical guide rail (521) in a sliding mode, and a locking mechanism (53) used for locking the knee pressing plate (51) and the side supporting frame (52) is arranged on the knee pressing plate (51).

7. The seat body forward-flexing test device of claim 5, wherein: the seat plate (1) is provided with a horizontal guide rail (11), and the side support (52) is slidably arranged on the horizontal guide rail (11).

8. A seat body forward flexion testing device as claimed in any one of claims 1 to 4 wherein: the support (2) comprises a vertical rod (21) and a vertical rod (22), the bottom of the vertical rod (21) is fixed on the seat (1), the vertical rod (22) is fixed at the top of the vertical rod (21), the resistance plate (3) is slidably arranged on the vertical rod (22), and the resistance mechanism (6) is arranged on the vertical rod (22).

9. The seat body forward-flexing test device of claim 8, wherein: the longitudinal rod (22) is provided with a distance measuring mechanism (7) for detecting the sliding distance of the resistance plate (3).

10. A seat body forward flexion testing device as claimed in any one of claims 1 to 4 wherein: the top of the seat plate (1) is provided with a soft cushion (8).