KR20230159222A - A position assurance system and an exercise assisting device having a position assurance system - Google Patents

Abstract

The position assurance system according to one embodiment includes a base frame, a slider pad at least a portion of which can be slid in a preset direction with respect to the base frame, and a mounting member connecting the base frame and the slider pad, At least a portion of the slider pad may be returned to a preset position with respect to the base frame by magnetic force.
An exercise assistance device according to an embodiment includes a base frame, a slider pad at least a portion of which can be slid in a preset direction with respect to the base frame, and a mounting member connecting the base frame and the slider pad, and the slider At least a portion of the pad is provided with a position assurance system that can be returned to a preset position with respect to the base frame by magnetic force, is connected to an auxiliary arm that can be worn on the user's thigh, and is connected to the auxiliary arm. It may include an actuator capable of controlling the arm to be driven, a main belt capable of wrapping the user's waist, and a main frame connected to the main belt and on which the actuator can be mounted.

Description

A position assurance system and an exercise assistance device having a position assurance system {A POSITION ASSURANCE SYSTEM AND AN EXERCISE ASSISTING DEVICE HAVING A POSITION ASSURANCE SYSTEM}

The present invention relates to a position assurance system and an exercise assistance device having a position assurance system.

Recently, as the aging society intensifies, the number of people complaining of pain and discomfort due to joint problems is increasing, and interest in assistive devices that can help elderly people or patients with joint discomfort walk smoothly is increasing.

In wearable assistive devices or walking assist devices that can assist pedestrians in walking, there is a need for assistive devices that can improve fit and usability.

The above-mentioned background technology is possessed or acquired by the inventor in the process of deriving the disclosure of the present application, and cannot necessarily be said to be known technology disclosed to the general public before the present application.

The purpose according to one embodiment is to provide a position assurance system in which components in contact with the user's thigh (eg, a slider pad to be described later) can be aligned to a preset position.

The purpose according to one embodiment is to reduce noise and friction generated when a component in contact with the user's thigh (eg, a slider pad to be described later) is moved to an alignment position.

The purpose according to one embodiment is to induce alignment of a component (eg, a slider pad to be described later) that abuts the user's thigh using magnetic force.

The position assurance system according to one embodiment includes a base frame, a slider pad at least a portion of which can be slid in a preset direction with respect to the base frame, and a mounting member connecting the base frame and the slider pad, At least a portion of the slider pad may be returned to a preset position with respect to the base frame by magnetic force.

The slider pad may include a roller assembly that is connected and fixed to the mounting member and has at least one roller, and a housing assembly that can accommodate the roller assembly inside.

The housing assembly may slide relative to the roller assembly by the roller of the roller assembly.

The housing assembly may be returned to a preset alignment position with respect to the roller assembly by magnetic force.

The roller assembly may include at least one stationary magnet, and the housing assembly may include at least one pairing magnet capable of interacting with the stationary magnet.

The fixing magnet may apply a magnetic force to the pairing magnet in a direction that pulls the pairing magnet.

The magnitude of the magnetic force with which the fixing magnet pulls the pairing magnet can be increased to a maximum at the alignment position.

The housing assembly may include a through hole through which a portion of the roller assembly may pass, and a portion of the roller assembly may be connected to the mounting member by penetrating the through hole.

The fixed magnet and the pairing magnet each consist of a pair, and the magnets within each pair of the fixed magnet and the pair of pairing magnets may be arranged symmetrically with respect to the central portion of the slider pad. .

In the aligned position, the roller assembly can be positioned in a central portion inside the housing assembly.

The size and shape of the fixing magnet and the pairing magnet may be the same.

An exercise assistance device according to an embodiment includes a base frame, a slider pad at least a portion of which can be slid in a preset direction with respect to the base frame, and a mounting member connecting the base frame and the slider pad, and the slider At least a portion of the pad is provided with a position assurance system that can be returned to a preset position with respect to the base frame by magnetic force, is connected to an auxiliary arm that can be worn on the user's thigh, and is connected to the auxiliary arm. It may include an actuator capable of controlling the arm to be driven, a main belt capable of wrapping the user's waist, and a main frame connected to the main belt and on which the actuator can be mounted.

The slider pad can be returned to the central portion of the user's thigh due to the position assurance system.

The position assurance system according to one embodiment may control components in contact with the user's thigh (eg, a slider pad to be described later) to be aligned at a preset position.

In an exercise assistance device equipped with a position assurance system according to an embodiment, noise and friction generated when a part in contact with the user's thigh (eg, a slider pad to be described later) is moved to an aligned position can be reduced.

The position assurance system according to one embodiment may use magnetic force to induce alignment of components (eg, a slider pad, which will be described later) that come into contact with the user's thigh.

1 shows an exercise assistance device with a position assurance system according to one embodiment.
Figure 2 shows a schematic diagram of a location assurance system according to one embodiment.
Figure 3 shows an exploded perspective view of a position assurance system according to one embodiment.
Figure 4 shows a cross-sectional view of a position assurance system according to one embodiment.
Figures 5A to 5C are cross-sectional views showing the operating principle of the location assurance system according to one embodiment.

Hereinafter, embodiments will be described in detail with reference to the attached drawings. The following description is one of several aspects of the embodiments, and the following description forms part of a detailed description of the embodiments. In describing one embodiment, detailed descriptions of well-known functions or configurations will be omitted to make the gist of the present invention clear.

However, since various changes may be made to the embodiments, the scope of the patent application is not limited or limited by these embodiments. It should be understood that all changes, equivalents or substitutions to the embodiments are included in the scope of rights.

In addition, terms or words used in this specification and claims should not be interpreted in their usual or dictionary meaning, and the inventor may appropriately define the concept of terms in order to explain his or her invention in the best way. Based on the principle that there is, it must be interpreted with a meaning and concept that corresponds to the technical idea of the invention according to an embodiment.

Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the embodiments belong. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless clearly defined in this application, be interpreted as having an ideal or excessively formal meaning. It doesn't work.

In addition, when describing with reference to the accompanying drawings, identical components will be assigned the same reference numerals regardless of the reference numerals, and overlapping descriptions thereof will be omitted. In describing the embodiments, if it is determined that detailed descriptions of related known technologies may unnecessarily obscure the gist of the embodiments, the detailed descriptions are omitted.

Additionally, in describing the components of the embodiment, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, or order of the component is not limited by the term. When a component is described as being "connected," "coupled," or "connected" to another component, that component may be directly connected or connected to that other component, but there is no need for another component between each component. It should be understood that may be “connected,” “combined,” or “connected.”

Components included in one embodiment and components including common functions will be described using the same names in other embodiments. Unless stated to the contrary, the description given in one embodiment may be applied to other embodiments, and detailed description will be omitted to the extent of overlap.

1 shows an exercise assistance device with a position assurance system according to one embodiment.

The exercise assistance device 1 including a position assurance system according to an embodiment may be worn by a user and assist the user's exercise. The user may be a human body, an animal, or a robot, but is not limited thereto. The exercise assistance device 1 can assist the movement of some joints of the lower body or upper body. For example, the exercise assistance device 1 may assist lower body exercise by assisting at least one joint of the hip joint, knee joint, and ankle joint. For example, the exercise assistance device 1 may assist upper body exercise by assisting at least one joint of the shoulder joint, elbow joint, and wrist joint. The exercise assistance device 1 can assist walking by assisting the movement of some joints of the user's lower body.

Referring to Figure 1, the exercise assistance device 1 including the position assurance system 100 may include an auxiliary arm 10, an actuator 20, a main belt 30, and a main frame 40. .

The auxiliary arm 10 may be worn on the user's thigh. The auxiliary arms 10 may be composed of a pair. The auxiliary arm 10 may be mounted on the user's thigh to assist the movement of the user's lower body. The auxiliary arm 10 can assist exercise such as walking or running by transmitting power to the user's thigh. The auxiliary arm 10 may include a thigh belt that surrounds the user's thighs. A position assurance system 100 may be provided at the connection portion between the auxiliary arm 10 and the thigh belt. The position assurance system 100 is provided at a connection part that connects the thigh belt to the auxiliary arm 10, and can control the thigh belt to surround the user's thigh in an appropriate shape. The position assurance system 100 connected to the auxiliary arm 10 will be described in detail in FIGS. 2 to 5C to be described later.

Actuator 20 may be connected to auxiliary arm 10. The actuator 20 may transmit power to the auxiliary arm 10 so that the auxiliary arm 10 can be driven. The actuator 20 may include software that controls the operation of the auxiliary arm 10. The actuator 20 may be placed on the side of the user's pelvis while the user is wearing the exercise assistance device 1. The actuator 20 may be formed as a pair, each corresponding to a pair of auxiliary arms 10.

The main belt 30 can surround the user's lower back. The main belt 30 can support the user's lower back while the user is wearing the exercise assistance device 1. The main belt 30 can prevent the exercise assistance device 1 from being separated downward due to gravity while the user is wearing the exercise assistance device 1. The main belt 30 may be connected to the auxiliary arm 10 and the actuator 20. The main belt 30 may be connected to the main frame 40.

The main frame 40 is connected to the main belt 30 and can accommodate the user's lower back inside. The main frame 40 is a rigid body and can form the structural framework of the exercise assistance device. The main frame 40 may include an actuator mounting portion (not shown) on which the actuator 20 can be mounted. The main frame 40 may be connected to the auxiliary arm 10. The main frame 40 is connected to a pair of auxiliary arms 10 and can rotatably support the auxiliary arms 10. The actuator 20 may be disposed at both ends of the main frame 40.

Figure 2 shows a schematic diagram of a location assurance system according to one embodiment.

The position assurance system 100 according to one embodiment may be connected to the auxiliary arm of the exercise assistance device. The position assurance system 100 may connect a thigh belt (not shown) worn on the user's thigh and an auxiliary arm. The position assurance system 100 can control the position of the thigh belt so that the thigh belt can be worn in an optimized state on the user's thigh.

Referring to Figure 2, the position assurance system 100 may include a base frame 110, a slider pad 120, and a mounting member 130.

The base frame 110 may be a part of an auxiliary arm (not shown) of an exercise assistance device. The base frame 110 may form one rigid body with the auxiliary arm. The base frame 110 may form one end of the auxiliary arm. The base frame 110 may support the mounting member 130 and the slider pad 120 while being fixed to the auxiliary arm.

The slider pad 120 may be connected to the thigh belt. The slider pad 120 may include belt connection holes formed at both ends so that a thigh belt can be connected. At least a portion of the slider pad 120 may be movable relative to the base frame 110. At least a portion of the slider pad 120 may be movable in a preset direction (eg, the direction of the arrow shown in FIG. 2) with respect to the base frame 110. The slider pad 120 may be movable around a reference axis (a) passing through the center of the mounting member 130. The slider pad 120 may be slid, for example, in a direction returning to the reference axis (a). When no other external force, such as the user's walking, is applied, the center portion of the slider pad 120 may be aligned with the reference axis (a) and remain motionless. The slider pad 120 may be able to move with one degree of freedom with respect to the base frame 110. At least a portion of the slider pad 120 may be moved through a sliding movement.

The mounting member 130 may connect the base frame 110 and the slider pad 120. The mounting member 130 may be fixed to the base frame 110. The slider pad 120 may be relatively movable with respect to the base frame 110 and the fixed mounting member 130. A portion of one end of the mounting member 130 may be inserted into the slider pad 120 . The mounting member 130 may be connected to a portion inside the slider pad 120 (eg, a roller assembly to be described later). The mounting member 130 may be fixed to a portion inside the slider pad 120 (eg, a roller assembly to be described later). The mounting member 130 may preferably have a cylindrical appearance. When the mounting member 130 has a cylindrical appearance, the slider pad 120 may be moved at one degree of freedom with the central axis of the cylindrical mounting member 130 as the reference axis (a). The slider pad 120 may be slidable so that the center portion of the slider pad 120 is aligned with the reference axis (a).

Figure 3 shows an exploded perspective view of a position assurance system according to one embodiment.

Referring to Figure 3, the position assurance system 100 according to one embodiment may include a base frame 110, a slider pad 120, and a mounting member 130.

The base frame 110 may be a part of an auxiliary arm (not shown) of an exercise assistance device. The base frame 110 may form one rigid body with the auxiliary arm. The base frame 110 may form one end of the auxiliary arm. The base frame 110 may support the mounting member 130 and the slider pad 120 while being fixed to the auxiliary arm.

The slider pad 120 may include a housing assembly 121 and a roller assembly 122. The housing assembly 121 and the roller assembly 122 are coupled to each other to form the slider pad 120. The housing assembly 121 is movably coupled to the roller assembly 122.

The housing assembly 121 may include an internal space capable of accommodating the roller assembly 122. The housing assembly 121 may form the exterior of the slider pad 120. Housing assembly 121 may be moved relative to roller assembly 122 . The housing assembly 121 may be moved in a preset direction (eg, the x-axis direction in FIG. 3) with respect to the roller assembly 122. The housing assembly 121 can slide with respect to the roller assembly 122 with one degree of freedom. The housing assembly 121 can be moved relative to the base frame 110 and the mounting member 130 by sliding with respect to the roller assembly 122 . The housing assembly 121 may slide around a reference axis (a) passing through the center of the mounting member 130. The housing assembly 121 may be slid so that the central portion of the housing assembly 121 returns in a direction aligned with the reference axis (a).

The housing assembly 121 may include a first housing assembly part 1211, a second housing assembly part 1212, and a pairing magnet 121m.

The first part of the housing assembly 1211 may be coupled to the second part of the housing assembly 1212. The housing assembly first part 1211 may include a through hole 1211h through which at least a portion of the mounting member 130, the roller assembly 122, or all of them may pass. The roller assembly 122 and the mounting member 130 may be connected and fixed through the through hole 1211h. The housing assembly first part 1211 may preferably have an arc-shaped appearance.

The second part of the housing assembly 1212 may be coupled to the first part of the housing assembly 1211. The housing assembly second part 1212 may preferably be formed to have an arc-shaped appearance.

The pairing magnet 121m may be fixed to the housing assembly 121. The pairing magnet (121m) can interact with the fixed magnet (122m), which will be described later, by exchanging magnetic force. The fairing magnet 121m may be mounted on the outer peripheral surface of the second part 1212 of the housing assembly. The pairing magnets 121m may be formed as a pair, for example. The pairing magnet 121m may be fixed to the housing assembly 121 and moved together as the housing assembly 121 slides.

The roller assembly 122 may be accommodated inside the housing assembly 121. The roller assembly 122 may be connected to the mounting member 130 and may be fixed. A portion of the roller assembly 122 may penetrate the through hole 1211h of the housing assembly.

The roller assembly 122 may include a first roller assembly part 1221, a second roller assembly part 1222, and a fixing magnet 122m.

The roller assembly first part 1221 may be connected to and fixed to the mounting member 130. The roller assembly first part 1221 may include a mounting member connection part configured to be connected to the mounting member 130. The roller assembly first part 1221 may include a roller 1221r for sliding the housing assembly 121. The rollers 1221r may be formed in plural numbers. The roller 1221r may be formed in the shape of a wheel, and may slide the housing assembly 121 in a preset direction (eg, x-axis direction in FIG. 3) with respect to the roller assembly. The roller assembly first part 1221 may preferably have an arc-shaped appearance.

The second part of the roller assembly 1222 may be combined with the first part of the roller assembly 1221. The second part of the roller assembly 1222 may include a roller hole through which the roller 1221r of the first part of the roller assembly 1221 can pass. The roller assembly second part 1222 may preferably be formed to have an arc-shaped appearance.

The fixing magnet 122m may be fixed to the roller assembly 122. The fixed magnet (122m) can exchange magnetic force by interacting with the pairing magnet (121m). Since the roller assembly 122 is connected to and fixed to the base frame 110 and the mounting member 130, the fixing magnet 122m may also be fixed and not moved. The fixing magnet 122m may be mounted on the second part 1222 of the roller assembly. The fixed magnets (122m) may be formed as a pair. The central portion of the pair of fixed magnets (122m) may be formed to be aligned with the reference axis (a) described above. A pair of magnets (122m) may be symmetrically arranged around the reference axis (a). The fixed magnet (122m) and the pairing magnet (121m) may have the same shape and size. The fixed magnet (122m) and the pairing magnet (121m) may have the same magnitude of magnetic force. The fixed magnet (122m) and the pairing magnet (121m) can mutually apply magnetic forces in the direction of pulling each other.

The mounting member 130 may connect the base frame 110 and the slider pad 120. The mounting member 130 may be fixed to the base frame 110. A portion of one end of the mounting member 130 may be inserted into the slider pad 120 through the through hole 1211h. The mounting member 130 may be connected to the first part 1221 of the roller assembly. The mounting member 130 may be fixed to the roller assembly first part 1221. The mounting member 130 may preferably have a cylindrical appearance. When the mounting member 130 has a cylindrical appearance, the housing assembly 121 may be moved at one degree of freedom with the central axis of the cylindrical mounting member 130 as the reference axis (a).

Figure 4 shows a cross-sectional view of a position assurance system according to one embodiment.

Referring to Figure 4, the position assurance system 100 according to one embodiment may include a base frame 110, a slider pad 120, and a mounting member 130.

The slider pad 120 may include a housing assembly 121 and a roller assembly 122. The fixing magnet (122m) of the roller assembly 122 and the pairing magnet (121m) of the housing assembly 121 may apply attractive force to each other. The roller 1221r of the roller assembly 122 comes into contact with the inner peripheral surface of the housing assembly 121, so that the housing assembly 121 moves in a preset direction (for example, the x-axis direction in FIG. 4) with respect to the roller assembly 122. One degree of freedom can be slid. The base frame 110, the mounting member 130, and the roller assembly 122 may be connected and fixed to each other.

Figures 5A to 5C are cross-sectional views showing the operating principle of the location assurance system according to one embodiment.

5A to 5C, the position assurance system 100 according to one embodiment may include a base frame 110, a mounting member 130, a housing assembly 121, and a roller assembly 122.

The housing assembly 121 may slide in a preset direction with respect to the roller assembly 122. The roller assembly 122 may be fixed to the mounting member 130, and the fixing magnet 122m mounted on the roller assembly 122 may not be moved. Therefore, the center of the pair of fixed magnets (122m) can be fixed in alignment with the reference axis (a) described above. The fixing magnet (122m) of the roller assembly and the pairing magnet (121m) of the housing assembly 121 may apply magnetic force in a pulling direction to each other. The fairing magnet 121m of the housing assembly 121 may be dependent on the housing assembly 121 to slide and move together. The attractive force of the fairing magnet 121m of the housing assembly 121 with the fixed magnet 122m of the roller assembly 122 can be maximized at a position aligned with the reference axis (a) during the sliding movement. In other words, when the fixed magnet (122m) of the roller assembly and the fairing magnet (121m) of the housing assembly 121 are all aligned around the reference axis (a), between the fixed magnet (122m) and the fairing magnet (121m) The applied magnetic force may be the greatest.

Referring to Figure 5a, when the fairing magnet (121m) of the housing assembly (121) is shifted in one direction from the alignment with the reference axis (a), the fairing magnet (121m) and the fixing magnet (122m) of the roller assembly (122) Due to the attractive force, the fairing magnet 121m may move in a direction toward the fixed magnet 122m, and thus the housing assembly 121 may slide in a direction aligned with the reference axis a (e.g., in Figure 5a). direction of the arrow shown). In other words, when the housing assembly 121 deviates from the alignment with the base frame 110 and the mounting member 130 in one direction, the housing assembly 121 is moved due to the interaction of the fairing magnet 121m and the fixing magnet 122m. can be returned to the aligned position again. This alignment position may be a centering alignment state in which the central portion of the housing assembly 121 is aligned with the reference axis (a) passing through the central portion of the mounting member 130.

Referring to Figure 5b, when the center portion of the housing assembly 121 is aligned with the reference axis (a), the fairing magnet (121m) of the housing assembly 121 and the fixing magnet (122m) of the roller assembly 122 It can be placed in this sorted state. In this state, the magnitude of the mutually attractive magnetic force between the fixed magnet (122m) and the pairing magnet (121m) may be maximum, and the alignment may be maintained despite a certain level of external force (e.g., the user's walking or external shock). You can. That is, the mounting member 130, roller assembly 122, and housing assembly 121 may be centered around the reference axis (a).

Referring to Figure 5c, when the fairing magnet (121m) of the housing assembly (121) is shifted in the other direction from the alignment with the reference axis (a), the fairing magnet (121m) and the fixing magnet (122m) of the roller assembly (122) Due to the attractive force, the fairing magnet 121m may move in a direction toward the fixed magnet 122m, and thus the housing assembly 121 may slide in a direction aligned with the reference axis a (e.g., in Figure 5c). direction of the arrow shown). In other words, when the housing assembly 121 deviates from the alignment with the base frame 110 and the mounting member 130 in the other direction, the housing assembly 121 is moved due to the interaction between the fairing magnet 121m and the fixing magnet 122m. can be returned to the aligned position again. This alignment position may be a centering alignment state in which the central portion of the housing assembly 121 is aligned with the reference axis (a) passing through the central portion of the mounting member 130.

In this way, when a part (e.g., the slider pad described above) is returned to a preset position (e.g., centering described above) using a magnet and the accompanying magnetic force, noise or friction generated as the part moves Dust can be reduced, and the user's feeling of use can be improved.

As described above, in the embodiments, specific details such as specific components and limited embodiments and drawings are used to explain the embodiments, but these are provided to facilitate general understanding. Additionally, the present invention is not limited to the above-described embodiments, and various modifications and variations can be made from these descriptions by those skilled in the art. Therefore, the idea of the present invention should not be limited to the above-described embodiments, and not only the claims described later, but also all things that are equivalent or equivalent to the claims will fall within the scope of the idea of the present invention.

1: Exercise assistance device
100: Position assurance system
110: base frame
120: Slider pad
130: Mounting member

Claims (13)

base frame;
a slider pad, at least a portion of which can be slid in a preset direction with respect to the base frame; and
a mounting member connecting the base frame and the slider pad;
Including,
At least a portion of the slider pad can be returned to a preset position with respect to the base frame by magnetic force,
Location assurance system.
According to paragraph 1,
The slider pad is,
a roller assembly connected to and fixed to the mounting member and having at least one roller; and
a housing assembly capable of accommodating the roller assembly inside;
Including,
Location assurance system.
According to paragraph 2,
The housing assembly can be slid relative to the roller assembly by the roller of the roller assembly,
Location assurance system.
According to paragraph 2,
The housing assembly can be returned to a preset alignment position with respect to the roller assembly by magnetic force,
Location assurance system.
According to paragraph 4,
The roller assembly includes at least one stationary magnet,
wherein the housing assembly includes at least one pairing magnet capable of interacting with the securing magnet,
Location assurance system.
According to clause 5,
The fixing magnet can apply a magnetic force to the pairing magnet in a direction that pulls the pairing magnet,
Location assurance system.
According to clause 6,
The magnitude of the magnetic force with which the fixing magnet pulls the pairing magnet increases to its maximum at the alignment position,
Location assurance system.
According to clause 5,
The housing assembly includes a through hole through which a portion of the roller assembly can pass,
A portion of the roller assembly is connected to the mounting member by passing through the through hole,
Location assurance system.
In clause 7,
The fixed magnet and the pairing magnet each consist of a pair, and the magnets within each pair of the pair of the fixed magnet and the pair of the pairing magnet are arranged symmetrically with respect to the central portion of the slider pad,
Location assurance system.
5. The method of claim 4, wherein in the aligned position the roller assembly is located in a central portion inside the housing assembly.
Location assurance system.
According to clause 5,
The size and shape of the fixing magnet and the pairing magnet are the same,
Location assurance system.
It includes a base frame, a slider pad at least a portion of which can be slid in a preset direction with respect to the base frame, and a mounting member connecting the base frame and the slider pad, and at least a portion of the slider pad is connected to the slider pad by magnetic force. An auxiliary arm equipped with a position assurance system capable of returning to a preset position with respect to the base frame and capable of being worn on the user's thigh;
an actuator connected to the auxiliary arm and capable of controlling the auxiliary arm to be driven;
A main belt that can wrap around the user's waist; and
a main frame connected to the main belt and on which the actuator can be mounted;
Including,
Exercise aids.
According to clause 12,
wherein the slider pad can be returned to the central portion of the user's thigh due to the position assurance system,
Exercise aids.