CN207940898U - Sitting body anteflexion tester with auto-reset function - Google Patents

Abstract

The utility model discloses a kind of sitting body anteflexion testers with auto-reset function, including base board, holder, measure track, sliding slot, measurement of skateboarding, the measurement of skateboarding is slidably arranged in the sliding slot, it is respectively arranged with electromagnet at the measurement of skateboarding both ends, the measurement of skateboarding includes the slide section being slidably arranged in sliding slot and the push plate portion being connect with the slide section, and permanent magnet is provided on former and later two end faces in the slide section.The utility model with automatically reset measurement of skateboarding while, with resistance when will not be to giving tested personnel's test, therefore substantially increase testing efficiency while, interfere with the precision of test, convenient and practical.

Description

Sitting and forward bending tester with automatic reset function

technical field

The utility model relates to a tester, in particular to a sitting body forward bending tester with an automatic reset function, which is used for physical fitness testing.

Background technique

The sitting and forward bending test is not only one of the sports test items in the senior high school entrance examination, but also a physical fitness test item for college students and middle school students. Its main purpose is to measure the possible range of motion of the trunk, waist, hip and other joints in a static state, and mainly reflect these parts. The extensibility and elasticity of joints, ligaments and muscles and the development level of body flexibility.

However, in the current sitting and forward bending test, after each measurement is completed, it is necessary to manually push the measurement slide to the initial position, which is very inconvenient to operate.

At present, there is a structure of setting a spring against the measuring slide, so that the measuring slide can return to the initial position after being pushed, but the spring gives the measured person the resistance to push when the measured person pushes the measuring slide, which leads to the measurement result Not precise.

In view of this, it is necessary to improve the prior art.

Contents of the invention

Aiming at the deficiencies in the prior art, the utility model provides a sitting body forward bending tester with an automatic reset function.

The utility model is realized through the following technical scheme: the sitting body forward bending tester with automatic reset function includes a base plate, a bracket is arranged on the base plate, and a measuring track is fixedly arranged on the upper end of the bracket. The measuring track is provided with a chute, and also includes a measuring slide, the measuring slide is slidably arranged in the chute, electromagnets are respectively arranged at both ends of the measuring track, and the measuring slide includes a slide set on the slide The slider part in the groove and the push plate part connected with the slider part are provided with permanent magnets on the front and rear end faces of the slider part. When the measurement slide plate needs to be reset, the electromagnet At this time, the electromagnet on one side gives the permanent magnet on one end surface a repulsive force, and then pushes the measuring slide to slide forward to a certain distance, and the electromagnet on the other side gives the measuring slide another The end surface is attracted by suction, so that the measuring slide that has slid to a certain distance is further attracted to the position against the electromagnet on the other side.

In the above technical solution, a protective cover is provided outside the electromagnet.

In the above technical solution, the slider part includes a second slider and a first slider rotatably arranged on the second slider, and the push plate part includes a first push plate and a second push plate arranged at intervals. Two push plates, connecting rods are fixedly arranged at the ends of both sides of the first slider, the first push plate and the second push plate are fixedly connected with the connecting rods, and the first slider A rotating shaft is arranged on the top, and the rotating shaft has one end extending into the inside of the second slider, and a cam is arranged at the end, and two ejector rods are elastically biased in the second slider, and the ejector rod One end of the piece abuts against the cam.

The utility model has the following beneficial effects: while the utility model has an automatic reset measurement slide plate, it will not give resistance to the tested personnel during the test, so the test efficiency is greatly improved and the accuracy of the test will not be affected, which is convenient and practical .

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the utility model.

Figure 2 is a schematic diagram of the cooperation between the measuring slide and the chute.

Fig. 3 is a schematic diagram of cooperation between the first slider and the second slider.

Fig. 4 is a schematic diagram of the principle of cooperation between the first slider and the second slider.

FIG. 5 is a schematic top view of the base plate.

Figure 6 is a schematic diagram of the locking mechanism.

Fig. 7 is a schematic diagram of another embodiment of the locking mechanism.

FIG. 8 is a structural schematic diagram of a reset structure.

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments: Referring to Fig. 1 to Fig. 8, the sitting body flexion tester with automatic reset function includes a base plate 1 on which a bracket is arranged 2. A measuring track 3 is fixedly installed on the upper end of the bracket 2, and a chute 30 is set on the measuring track 3, and a measuring slide 4 is also included, and the measuring slide 4 is slidably arranged in the chute 30. By manually pushing the path of the measuring slide 4 sliding on the measuring track 3 , the actual sitting body forward flexion performance can be obtained.

Electromagnets 7 are respectively arranged at both ends of the measurement track 3, and the measurement slide plate 4 includes a slider part 40 slidably arranged in a chute and a push plate part 41 connected with the slider part. Permanent magnets 8 are arranged on the front and rear (front and rear defined by the sliding block 40 in the moving direction of the chute 30) of the block part 40. When the test is completed and the measuring slide 4 needs to be reset, the electromagnet 7 is At this time, the electromagnet 7 on one side gives the permanent magnet on one end surface a repulsive force, and then pushes the measuring slide 4 to slide forward to a certain distance, and the electromagnet 7 on the other side gives the measuring slide 4 a repulsive force. The other end surface has a suction force, so that the measuring slide 4 that has slid to a certain distance is further attracted to the position against the electromagnet 7 on the other side (that is, the initial position), which greatly improves the measurement efficiency. In order to prevent the electromagnet from being affected by the measurement when it is not energized, a protective cover 70 is provided outside the electromagnet.

The slider part 40 is arranged at the rear of the push plate part 41, therefore, the person under test first contacts the push plate part 41 and cannot directly push the slider part 40 during the test, and the slider part 40 includes a second The slide block 6 and the first slide block 5 that is rotatably arranged on the second slide block 6, the push plate part 41 includes a first push plate 41a and a second push plate 41b arranged at intervals, on the first slide block 5 Connecting rods 100 are fixedly arranged at the ends of both sides, and the first push plate 41 a and the second push plate 41 b are fixedly connected to the connecting rods 100 .

The first slider 5 is provided with a rotating shaft 50, and the rotating shaft 50 has an end protruding into the inside of the second slider 6, and a cam 51 is arranged at the end, and is elastic in the second slider 6. There are two push rods 60 biased, and one end of the push rods 60 abuts against the cam 51 . Referring to FIG. 3 , when the forces on the first push plate 41 a and the second push plate 41 b are substantially balanced, the ejector member 60 retracts into the inside of the second slider 6 . When the person under test adopts a non-standard posture, for example, by twisting the body and then pushing any baffle plate with one hand, the cam 51 is rotated, and then the two push rods 60 are pushed to stretch out the second slide block 6, and abut against the side wall of the chute 30, so that the slider part 40 cannot be slid, which completely eliminates the possibility of cheating. In order to increase the damping of the push rod member 60 and the side wall of the chute, a damping washer 60a is provided at the end of the push rod member 60 .

A base plate chute 10 is provided on the base plate 1, and a pressure sensing module 11 is slidably arranged in the base plate chute 10, and the pressure sensing module 11 includes a device protruding from the base plate chute 10 probe head 11a. A locking mechanism for locking the slider is arranged on the measuring slide 4 or the measuring track 3, and the opening/closing of the locking mechanism is controlled by a control module. The two pressure sensing modules 11 are connected by a fixed rod 300 so that they can slide synchronously.

With the above structure, when in use, the detection head 11a of the pressure sensing module 11 is placed directly under the knee of the leg of the human body. When the tested person's posture is correct, the pressure on the probe head is constant; however, when the tested person bends his legs for testing, the probe head cannot detect the pressure or the pressure changes greatly, at this time the pressure sensing module 11 sends a signal To the control module, the control module controls the locking mechanism to lock the slider, so that the measuring slide 4 cannot be pushed, so the push plate part 41 fixedly connected with the slider 4 cannot continue to be pushed. promote.

As an example of a locking mechanism, see FIG. 6, the locking mechanism includes a vertical plate 30a formed with a side wall of a chute, and the vertical plate 30a is pushed by a cylinder 200 arranged on one side thereof, and the control The module is connected to the cylinder 200. When the person under test bends his legs for testing, the probe cannot detect the pressure or the pressure changes greatly. At this time, the pressure sensing module 11 sends a signal to the control module, and the control module The control cylinder pushes the vertical plate 30a to move to the right (the right side in the drawing is defined as the right side here), thereby locking the slide block.

Of course, the locking mechanism can also adopt the structure as shown in FIG. The cam 51 is driven by a motor 201, and the motor 201 is connected to the control module. When the person under test bends his legs for testing, the probe cannot detect pressure or the pressure changes greatly. At this time, the pressure sensor The module 11 sends a signal to the control module, and the control module controls the motor to drive the cam to rotate, so that the two ejector rods 60 stretch out from the second slider 6 and lean against the side wall of the chute 30, so that the slider Part 40 cannot be slid, which completely eliminates the possibility of cheating.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. What is described in the above-mentioned embodiments and description in this application is only the principle of the utility model, and the utility model will have various changes and improvements without departing from the spirit and scope of the utility model. The above changes and improvements all fall within the scope of the claimed utility model.

Claims (3)

1. the sitting body anteflexion tester with auto-reset function, including base board (1), are arranged on the base board (1) There is holder (2), be fixedly installed in the upper end of the holder (2) and measure track (3), is arranged on the measurement track (3) and slides Slot (30) further includes a measurement of skateboarding (4), and the measurement of skateboarding (4) is slidably arranged in the sliding slot (30), and feature exists In：It is respectively arranged with electromagnet (7) at the both ends of the measurement track (3), the measurement of skateboarding (4) includes being slidably arranged in cunning Slide section (40) in slot (30) and the push plate portion (41) being connect with the slide section, in former and later two of the slide section (40) Permanent magnet (8) is provided on end face.

2. the sitting body anteflexion tester with auto-reset function as described in claim 1, it is characterised in that：In the electricity It is provided with protective cover (70) outside magnet (7).

3. the sitting body anteflexion tester with auto-reset function as described in claim 1, it is characterised in that：The sliding block Portion (40) includes the second sliding block (6) and the first sliding block (5) being rotatably arranged on the second sliding block, between the push plate portion (41) includes The first push plate (41a) every setting and the second push plate (41b) are fixedly installed in the end of the both sides of first sliding block (5) Connecting rod (100), first push plate (41a) are fixedly connected with second push plate (41b) with the connecting rod (100), institute It states and is provided with shaft (50) on the first sliding block (5), the shaft (50), which has, stretches into the internal one end of second sliding block (6), There is cam (51) in the end set, has two mandril parts (60), the mandril part in the interior elastic biasing of second sliding block (6) (60) one end abuts against the cam (51).