Gravity sensor for massage chair

Abstract

According to the technical scheme, the gravity sensor for the massage chair is characterized in that the gravity sensor comprises an upper shell and a lower shell, a deformation piece is arranged in the upper shell, a resistance strain gauge is arranged on the deformation piece, the two ends of the upper shell are each provided with a positioning sliding column extending downwards, and the positioning sliding columns are arranged on the lower shell. A gasket capable of sliding up and down is arranged in the lower shell and located on the positioning sliding column, a jacking block used for jacking the resistance strain gauge to deform is fixedly installed at the bottom end of the deformation piece, a contact abutting against the gasket is arranged on the bottom face of the jacking block, and an anti-skid base fixedly connected with the gasket is arranged at the bottom end of the gasket and located below the lower shell. According to the gravity sensor, transverse impact force generated at the moment when a user sits on the massage chair or when the massage chair is moved can be effectively transferred to the position of the outer shell to be borne, the resistance strain gauges are prevented from being distorted and damaged due to stress through a special structure, therefore, the sensing effect and the sensing precision of the gravity sensor are maintained, and the service life of the gravity sensor is prolonged.

Description

[Technical field]

[0001] The utility model relates to the technical field of gravity sensing, in particular to a gravity sensor for a massage chair. [Background technology]

[0002] In order to make the massage chair have a detection function to determine whether someone is lying on the massage chair, so as to issue a prompt sound for easy use, in existing massage chairs, a gravity sensor is often set on the non-slip base of the massage chair to provide a detection signal. However, the resistance strain gauge and the load-bearing base in the existing gravity sensor structure are fixedly installed together. When the resistance strain gauge detects gravity, it undergoes elastic deformation due to the vertical change in gravity. However, when the massage chair is moved or the user suddenly sits on the massage chair, a lateral impact force is generated, which can easily cause the resistance strain gauge to be twisted and damaged, affecting the sensing effect and sensing accuracy of the gravity sensor, and shortening the service life of the gravity sensor.

[0003] In order to solve the above defects, the utility model provides a gravity sensor for a massage chair. [Contents of the utility model]

[0004] In order to solve the problem that lateral impact force easily causes the resistance strain gauge to be twisted and damaged, shortening the service life of the existing gravity sensor and affecting the sensing effect and sensing accuracy, the utility model provides a gravity sensor for a massage chair.

[0005] In order to solve the above problems, the utility model provides the following technical solutions:

[0006] A gravity sensor for a massage chair, characterized in that it includes an upper shell fixedly mounted on the bottom surface of the massage chair, and a lower shell fixedly connected to the upper shell, a deformable member is provided in the upper shell, a resistance strain gauge is provided on the deformable member, downwardly extending positioning slides are provided at both ends of the upper shell, a gasket is provided in the lower shell and on the positioning slide so as to slide up and down, a pressing block for pushing the resistance strain gauge to deform is fixedly mounted at the bottom end of the deformable member, a contact abutting against the gasket is provided on the bottom surface of the pressing block, and an anti-slip base fixedly connected to the gasket is provided at the bottom end of the gasket and below the lower shell.

[0007] The gravity sensor for massage chairs as described above is characterized in that: through holes for passing the positioning slide column are provided at both ends of the gasket, an opening is provided on the lower shell, the middle section of the gasket is U-shaped and is recessed downward through the opening, the bottom surface height of the gasket exceeds the bottom surface height of the lower shell downward, and a gap is left between the lower shell and the anti-slip base.

[0008] The gravity sensor for a massage chair as described above is characterized in that: the outer surface of the contact point is a smooth hemispherical surface, and the material hardness of the contact point and the gasket is higher than the material hardness of the deformable member.

[0009] The gravity sensor for a massage chair as described above is characterized in that: the deformable member includes a frame, a deformation sheet connected to the frame is provided inside the frame, the resistance strain sheet is attached to the bottom surface of the deformation sheet, the two ends of the top pressure block are fixedly mounted on the deformation sheet, and a groove for accommodating the resistance strain sheet is provided on the top pressure block.

[0010] The gravity sensor for a massage chair as described above is characterized in that: a convex ring extending downward and used to support the frame is provided on the bottom surface of the upper shell, and limiting blocks for clamping the deformable member are provided on the bottom surface of the upper shell and on both sides of the convex ring.

[0011] The gravity sensor for a massage chair as described above is characterized in that an electric wire is connected to the resistance strain gauge, and a wire arrangement port is provided on the upper shell.

[0012] The gravity sensor for a massage chair as described above is characterized in that: first positioning holes are provided at both ends of the upper shell body corresponding to the positioning slide column, and second positioning holes are provided at both ends of the lower shell body corresponding to the positioning slide column, and the two ends of the positioning slide column are tightly plugged into the first positioning hole and the second positioning hole respectively.

[0013] The gravity sensor for a massage chair as described above is characterized in that: a mounting hole is provided in the anti-slip base, a screw hole is provided on the gasket, the anti-slip base is fixedly connected to the gasket by screws and nuts, and the material of the anti-slip base is rubber or hard silicone.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] The utility model discloses a gravity sensor for a massage chair, which is provided with a positioning slide column, a gasket and a contact point. The gasket is fixedly connected to the anti-skid base. The contact point is a bearing point and has an outer surface which is a smooth hemispherical curved surface. The friction between the contact point and the gasket is small. When the massage chair is moved or when the user suddenly sits on the massage chair, the lateral impact force generated will cause the massage chair to undergo a slight displacement. At this time, the gravity sensor as a whole will undergo a slight displacement relative to the anti-skid base and the gasket. The lateral impact force received by the gravity sensor is transmitted to the positioning slide column through the gasket and is jointly borne by the positioning slide column, the upper shell and the lower shell. The resistance strain gauge can effectively avoid the influence of the lateral impact force under the protection of the deformation member and the top pressure block. At the same time, the lateral force received by the deformation member and the top pressure block is only the friction force between the contact point and the gasket, which greatly reduces the destructive effect of the lateral impact force and can effectively prevent the lateral impact force from distorting and damaging the resistance strain gauge, thereby maintaining the sensing effect and sensing accuracy of the gravity sensor and improving the service life of the gravity sensor.

Brief Description of the Drawings

[0016] Figure 1 is a three-dimensional diagram of the gravity sensor;

[0017] Figure 2 is a bottom view of the gravity sensor;

[0018] Figure 3 yes Figure 2 Sectional view in the AA direction;

[0019] Figure 4 This is the first exploded view of the gravity sensor;

[0020] Figure 5 This is the second exploded view of the gravity sensor;

[0021] Figure 6 It is an enlarged view of the main view of the top pressure block;

[0022] In the figure: 1 is an upper shell; 2 is a lower shell; 3 is a deformable part; 4 is a frame; 5 is a deformation piece; 6 is a positioning slide column; 7 is an anti-slip base; 8 is a gasket; 9 is a top pressure block; 10 is a contact; 11 is a groove; 12 is a through hole; 13 is an opening; 14 is a convex ring; 15 is a limit block; 16 is a resistance strain gauge; 17 is an electric conductor; 18 is a wiring port; 19 is a first positioning socket; 20 is a second positioning socket; 21 is a mounting hole; 22 is a screw hole. [Specific implementation method]

[0023] The technical features of the present invention are further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can understand them.

[0024] The present utility model only protects the mechanical structure, and the circuit structure is common knowledge.

[0025] A gravity sensor for a massage chair, such as Figure 1 to Figure 6 As shown, it includes an upper shell 1 fixedly installed on the bottom surface of the massage chair, and a lower shell 2 connected and fixed to the upper shell 1, a deformable member 3 is provided in the upper shell 1, a resistance strain gauge 16 is provided on the deformable member 3, downwardly extending positioning slides 6 are provided at both ends of the upper shell 1, a gasket 8 is provided in the lower shell 2 and on the positioning slide 6 and can slide up and down, a pressing block 9 for pushing the resistance strain gauge 16 to deform is fixedly installed at the bottom end of the deformable member 3, a contact 10 abutting against the gasket 8 is provided on the bottom surface of the pressing block 9, and an anti-slip base 7 fixedly connected to the gasket 8 is provided at the bottom end of the gasket 8 and below the lower shell 2.

[0026] The principle of the gravity sensor transferring the lateral impact force and protecting the resistance strain gauge is as follows:

[0027] When the massage chair is moved or the user suddenly sits on the massage chair, the lateral impact force generated will cause the massage chair to move slightly. At this time, the gravity sensor as a whole will move slightly relative to the anti-slip base 7 and the gasket 8. The lateral impact force received by the gravity sensor is transmitted to the positioning slide column 6 through the gasket 8 and is borne jointly by the positioning slide column 6, the upper shell 1 and the lower shell 2. The resistance strain gauge 16 can effectively avoid the influence of the lateral impact force under the protection of the deformation member 3 and the top pressure block 9. At the same time, the lateral force received by the deformation member 3 and the top pressure block 9 is only the friction force between the contact 10 and the gasket 8. Since the outer surface of the contact 10 is a smooth hemispherical surface with small friction, the destructive effect of the lateral impact force can be greatly reduced, and the lateral impact force can be effectively prevented from distorting and damaging the resistance strain gauge 16, thereby maintaining the sensing effect and sensing accuracy of the gravity sensor and improving the service life of the gravity sensor.

[0028] Specifically, through holes 12 for passing the positioning slide column 6 are provided at both ends of the gasket 8, and an opening 13 is provided on the lower shell 2. The middle section of the gasket 8 is U-shaped and is recessed downward through the opening 13. The bottom height of the gasket 8 exceeds the bottom height of the lower shell 2 downward, which can ensure the accuracy and sensitivity of the gravity sensor. A gap is left between the lower shell 2 and the anti-slip base 7. The gap between the lower shell 2 and the anti-slip base 7 is the space for the gasket 8 to slide relatively. When the weight of the massage chair changes, the gasket 8 and the top pressure block 9 are subjected to force and move relative to each other, causing the resistance strain gauge 16 to deform and generate an induction signal.

[0029] In addition, the outer surface of the contact 10 is a smooth hemispherical surface to reduce the friction between the contact 10 and the gasket 8, thereby better reducing the impact of the lateral impact force on the resistance strain gauge 16. The material hardness of the contact 10 and the gasket 8 is higher than the material hardness of the deformable member 3, which prevents the contact 10 and the gasket 8 from deforming before the deformable member 5 in the deformable member 3, affecting the degree of force deformation of the resistance strain gauge 16, resulting in distortion of the accuracy of gravity sensing.

[0030] Specifically, the deformable member 3 includes a frame 4, a deformable sheet 5 connected to the frame 4 is provided inside the frame 4, the resistance strain gauge 16 is attached to the bottom surface of the deformable sheet 5, the two ends of the top pressure block 9 are fixedly mounted on the deformable sheet 5 by screws, and a groove 11 for accommodating the resistance strain gauge 16 is provided on the top pressure block 9. When the weight on the massage chair increases, since the gasket 8 presses against the contact 10 and the top pressure block 9 is fixed on the deformable sheet 5, the top pressure block 9 will press against the deformation sheet 5 to drive the resistance strain gauge 16 to deform to a corresponding degree, so that the circuit where the resistance strain gauge 16 is located generates a corresponding gravity-induced electrical signal.

[0031] Specifically, a convex ring 14 extending downward and used to support the frame 4 is provided on the bottom surface of the upper shell 1. The convex ring 14 presses against the frame 4 to leave space for the deformable sheet 5 to deform up and down. Limiting blocks 15 for clamping the deformable member 3 are provided on the bottom surface of the upper shell 1 and on both sides of the convex ring 14. When installing the deformable member 3, the deformable member 3 can be directly clamped between the limiting blocks 15. At this time, the convex ring 14 corresponds exactly to the frame 4.

[0032] In addition, an electric conductor 17 is connected to the resistance strain gauge 16, and a wire arrangement port 18 is provided on the upper shell 1. Hot melt adhesive can be filled and covered on the outside of the resistance strain gauge 16 and at the welding point between the electric conductor 17 and the resistance strain gauge 16 for waterproofing and preventing the electric conductor 17 from breaking at the welding point.

[0033] Specifically, a first positioning hole 19 is provided at both ends of the upper shell 1 corresponding to the positioning slide 6, and a second positioning hole 20 is provided at both ends of the lower shell 2 corresponding to the positioning slide 6. The two ends of the positioning slide 6 are tightly fitted with the first positioning hole 19 and the second positioning hole 20 respectively, so as to facilitate the alignment and closing of the upper shell 1 and the lower shell 2, and then fix them by screws.

[0034] In addition, a mounting hole 21 is provided in the anti-slip base 7, and a screw hole 22 is provided on the gasket 8. The anti-slip base 7 is fixedly connected to the gasket 8 by screws and nuts, and the assembly is convenient. The material of the anti-slip base 7 is rubber or hard silicone. The gravity sensor is installed at the bottom of the massage chair and in contact with the ground. The rubber or hard silicone material has an anti-slip effect.

[0035] The embodiments described in the present invention are merely descriptions of preferred implementation modes of the present invention and are not limited to the precise structures described above and shown in the accompanying drawings. Various modifications and changes may be made without departing from the scope thereof. Various modifications and improvements made to the technical solutions of the present invention by engineers and technicians in this field without departing from the design concept of the present invention shall all fall within the protection scope of the present invention.

Claims

1. A gravity sensor for a massage chair, characterized in that: The massage chair comprises an upper shell (1) fixedly mounted on the bottom surface of the massage chair, and a lower shell (2) connected and fixed to the upper shell (1); a deformable member (3) is arranged in the upper shell (1); a resistance strain gauge (16) is arranged on the deformable member (3); downwardly extending positioning slides (6) are arranged at both ends of the upper shell (1); a gasket (8) is arranged in the lower shell (2) and is located on the positioning slides (6) and can slide up and down; a pressing block (9) for pushing the resistance strain gauge (16) to deform is fixedly mounted at the bottom end of the deformable member (3); a contact (10) abutting against the gasket (8) is arranged on the bottom surface of the pressing block (9); and an anti-slip base (7) fixedly connected to the gasket (8) is arranged at the bottom end of the gasket (8) and below the lower shell (2).

2. The gravity sensor for a massage chair according to claim 1, characterized in that: Through holes (12) for passing the positioning slide column (6) are provided at both ends of the gasket (8), an opening (13) is provided on the lower shell (2), the middle section of the gasket (8) is U-shaped and is recessed downward through the opening (13), the bottom surface height of the gasket (8) exceeds the bottom surface height of the lower shell (2), and a gap is left between the lower shell (2) and the anti-slip base (7).

3. The gravity sensor for a massage chair according to claim 1, characterized in that: The outer surface of the contact point (10) is a smooth hemispherical curved surface, and the material hardness of the contact point (10) and the gasket (8) is higher than the material hardness of the deformable member (3).

4. The gravity sensor for a massage chair according to any one of claims 1 to 3, characterized in that: The deformable member (3) comprises a frame (4), a deformation sheet (5) connected to the frame (4) is arranged inside the frame (4), the resistance strain sheet (16) is attached to the bottom surface of the deformation sheet (5), the two ends of the top pressure block (9) are fixedly mounted on the deformation sheet (5), and a groove (11) for accommodating the resistance strain sheet (16) is arranged on the top pressure block (9).

5. The gravity sensor for a massage chair according to claim 4, characterized in that: A convex ring (14) extending downward and used to support the frame (4) is provided on the bottom surface of the upper shell (1), and limiting blocks (15) used to clamp the deformable member (3) are provided on the bottom surface of the upper shell (1) and located on both sides of the convex ring (14).

6. The gravity sensor for a massage chair according to any one of claims 1 to 3, characterized in that: An electric wire (17) is connected to the resistance strain gauge (16), and a wire arrangement port (18) is provided on the upper housing (1).

7. The gravity sensor for a massage chair according to any one of claims 1 to 3, characterized in that: A first positioning plug hole (19) is provided at both ends of the upper shell (1) corresponding to the positioning slide post (6), and a second positioning plug hole (20) is provided at both ends of the lower shell (2) corresponding to the positioning slide post (6). The two ends of the positioning slide post (6) are respectively tightly fitted and plugged into the first positioning plug hole (19) and the second positioning plug hole (20).

8. The gravity sensor for a massage chair according to any one of claims 1 to 3, characterized in that: A mounting hole (21) is provided in the anti-slip base (7), a screw hole (22) is provided on the gasket (8), the anti-slip base (7) is fixedly connected to the gasket (8) by means of screws and nuts, and the material of the anti-slip base (7) is rubber or hard silicone.

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