Top rushing prevention circuit device of massage chair

Abstract

The utility model relates to an anti-top-rushing circuit device of a massage chair. The anti-top-rushing circuit device comprises an input power supply V1, a control I C, a positive and negative rotation anti-top-rushing circuit, secondary anti-top-rushing protection switches S1 and S2 and a sampling resistor Rsense. The control IC receives a Hall sensor stroke signal and a sampling resistor current signal and controls the motor to rotate forwards and backwards. The secondary anti-top-rushing protection switch is triggered in a preset stroke, and a corresponding circuit is disconnected for top-rushing prevention. The device can effectively prevent the massage machine core from rushing to the top, and can ensure the normal operation of the massage chair when the Hall sensor fails.

Description

TECHNICAL FIELD

[0001] The utility model belongs to massage chair technical field, concretely relates to a massage chair anti -top -of -the -stroke circuit device. BACKGROUND

[0002] Massage pad or massage chair massage needs to have the massage machine core head of walking, walking massage machine core head is driven by motor gear rotation and then walking, the market massage pad or massage chair machine core head walks to the top or bottom position and needs to stop, the reverse direction control machine core walks. The signal of stopping is through the detection installation in the top or bottom hall sensor. Hall sensor is constituted by hall sensor and magnet, hall sensor is usually placed in the machine core, magnet is installed on the guide rail piece, can also be installed reversely, hall sensor is installed on the guide rail, magnet is installed on the machine core. When the detection mechanism is invalid, the system cannot detect the upper limit position or lower limit position signal, the machine core will continue to walk, thus causing the machine core to hit the top.

[0003] The existing anti -top -of -the -stroke circuit device structure, the patent application no. CN205398050U of Chinese patent application discloses a kind of anti -top -of -the -stroke control device, including the motor of driving paper feeding lifting platform to rise or descend, and motor control main circuit, and the normally open contact of main control contactor is arranged on the motor control main circuit, it is characterized in that the normally open contact of protection contactor is also arranged on the motor control main circuit, protection contactor coil is arranged in the protection circuit with limit switch. When paper feeding lifting platform rises to abnormal position and touches limit switch, protection circuit can be immediately disconnected, so that motor stops rotating, prevent hitting the top. The utility model has simple structure, reliable performance, effectively prevents paper feeding lifting platform from hitting the top, protects the safe operation of equipment and motor, and guarantees normal production.

[0004] The above existing technology has the problem that the means of fault detection and processing is relatively single, relies only on limit switch and protection contactor, when limit switch fails, it can not be detected and processed in time, and after failure occurs, the normal operation of machine cannot be guaranteed. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of massage chair anti -top -of -the -stroke circuit device to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of massage chair anti -top -of -the -stroke circuit device, including input power supply V1, control IC, positive rotation anti -top -of -the -stroke circuit, reverse rotation anti -top -of -the -stroke circuit, secondary anti -top -of -the -stroke protection switch S1 and S2, and sampling resistance Rsense;Wherein:

[0008] The input end of the control IC is connected with the Hall sensor and the sampling resistor Rsense, and receives the signals transmitted by the Hall sensor and the sampling resistor Rsense; the output end of the control IC is connected with the forward rotation anti-collision circuit and the reverse rotation anti-collision circuit; wherein the Hall sensor is used for detecting the stroke signal of the walking movement core, and the sampling resistor Rsense is used for detecting the current signal of the motor M1 controlled by the walking movement core.

[0009] The forward rotation anti-collision circuit and the reverse rotation anti-collision circuit respectively control the forward rotation and the reverse rotation of the motor M1 in response to the control signals output by the control IC.

[0010] The secondary anti-collision protection switches S1 and S2 are respectively connected in series in the forward rotation anti-collision circuit and the reverse rotation anti-collision circuit, and are installed in the massage chair and are triggered when the walking movement core walks to the preset stroke, and the secondary anti-collision protection switches S1 and S2 are respectively disconnected from the forward rotation anti-collision circuit and the reverse rotation anti-collision circuit when triggered.

[0011] The input power supply V1 is used for providing electric energy for the device.

[0012] As a preferred embodiment, the forward rotation anti-collision circuit structure is that the input power supply V1 is connected in parallel with the capacitor C2, the output end of the input power supply V1 is connected with the driving switch tube Q1, the driving switch tube Q1 is connected with the control IC and the anode of the diode D1 respectively, the cathode of the diode D1 is connected with the secondary anti-collision protection switch S1, the other end of the secondary anti-collision protection switch S1 is connected with the motor M1, the other end of the motor M1 is connected with the driving switch tube Q4, the other end of the driving switch tube Q4 is connected with the sampling resistor Rsense and the control IC respectively, and the other end of the sampling resistor Rsense is connected with the control IC and the common ground end of the circuit respectively.

[0013] As a preferred embodiment, the reverse rotation anti-collision circuit structure is that the input power supply V1 is connected in parallel with the capacitor C2, the output end of the input power supply V1 is connected with the driving switch tube Q2, the driving switch tube Q2 is connected with the control IC and the motor M1 respectively, the other end of the motor M1 is connected with the secondary anti-collision protection switch S2, the other end of the secondary anti-collision protection switch S2 is connected with the anode of the diode D2, the cathode of the diode D2 is connected with the driving switch tube Q3, the other end of the driving switch tube Q3 is connected with the sampling resistor Rsense and the control IC respectively, and the other end of the sampling resistor Rsense is connected with the control IC and the common ground end of the circuit respectively.

[0014] As a preferred embodiment, the secondary anti-collision protection switches S1 and S2 are respectively installed at the maximum stroke position of the walking movement core, or are respectively installed at the upper and lower positions of the walking movement core.

[0015] As a preferred embodiment, the Hall sensor is composed of a Hall sensor and an inductive magnet, which are respectively installed on the walking mechanism and the two ends of the maximum stroke of the walking track of the walking mechanism.

[0016] As a preferred embodiment, one end of the sampling resistor Rsense is connected with the forward rotation anti-collision top circuit and the reverse rotation anti-collision top circuit, and the other end is connected with the control IC, and the current signal is collected and sent to the control IC.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1. Double anti-collision top protection: through the Hall sensor detection stroke signal, sampling resistance detection current signal, cooperate secondary anti-collision protection switch, realize double anti-collision protection, reduce the risk of collision.

[0019] 2. Strong fault response capability: when the Hall sensor fails, the secondary anti-collision protection switch triggers, the sampling resistance detects the current change, and the control IC can determine the fault and control the motor to walk reversely, so that the massage mechanism remains in a normal working state. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the control circuit structure schematic diagram of the utility model;

[0021] Figure 2 It is the current flow direction schematic diagram of the forward rotation anti-collision top circuit of the utility model;

[0022] Figure 3 It is the current flow direction schematic diagram of the reverse rotation anti-collision top circuit of the utility model;

[0023] Figure 4 It is the current loop disconnecting schematic diagram after the secondary anti-collision switch of the utility model triggers;

[0024] Figure 5 It is the up and down position schematic diagram of the secondary anti-collision switch installed on the walking mechanism of the utility model;

[0025] Figure 6 It is the maximum stroke position schematic diagram of the secondary anti-collision switch installed on the walking mechanism of the utility model.

[0026] Mark explanation in drawing:

[0027] V1, input power supply;C2, capacitor;Q1, drive switch tube;Q2, drive switch tube;Q3, drive switch tube;Q4, drive switch tube;D1, diode;D2, diode;S1, secondary anti-collision protection switch;S2, secondary anti-collision protection switch;M1, motor. DETAILED DESCRIPTION

[0028] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] It should be understood that the step numbers used herein are only for the convenience of description, and are not limited to the execution sequence of the steps.

[0030] It should be understood that the terms used in the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the present application and the appended claims, unless otherwise clear from the context, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0031] The terms "comprise" and "include" indicate the presence of described features, whole, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, whole, steps, operations, elements, components and / or sets thereof.

[0032] The term "and / or" refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0033] As shown in the accompanying drawings Figure 1 A massage chair anti-collision circuit device, comprising an input power V1, a control IC, a forward rotation anti-collision circuit, a reverse rotation anti-collision circuit, secondary anti-collision protection switches S1 and S2, and a sampling resistor Rsense; wherein:

[0034] The input end of the control IC is connected with the Hall sensor and the sampling resistor Rsense, and receives the signals transmitted by the Hall sensor and the sampling resistor Rsense; the output end of the control IC is connected with the forward rotation anti-collision circuit and the reverse rotation anti-collision circuit; wherein the Hall sensor is used for detecting the stroke signal of the walking core, and the sampling resistor Rsense is used for detecting the current signal of the motor M1 for controlling the walking of the walking core;

[0035] The forward rotation anti-collision circuit and the reverse rotation anti-collision circuit respectively control the forward rotation and reverse rotation of the motor M1 in response to the control signals output by the control IC;

[0036] The secondary anti-collision protection switches S1 and S2 are respectively connected in series in the forward rotation anti-collision circuit and the reverse rotation anti-collision circuit, and are triggered when the massage chair walks to a preset stroke.

[0037] The input power supply V1 is used to provide power for the device.

[0038] As a preferred embodiment, the forward rotation anti-collision circuit structure is that the input power supply V1 is connected in parallel with the capacitor C2, the output end of the input power supply V1 is connected with the driving switch tube Q1, the driving switch tube Q1 is connected with the control IC and the anode of the diode D1 respectively, the cathode of the diode D1 is connected with the secondary anti-collision protection switch S1, the other end of the secondary anti-collision protection switch S1 is connected with the motor M1, the other end of the motor M1 is connected with the driving switch tube Q4, the other end of the driving switch tube Q4 is connected with the sampling resistor Rsense and the control IC respectively, and the other end of the sampling resistor Rsense is connected with the control IC and the common ground end of the circuit respectively.

[0039] As a preferred embodiment, the reverse rotation anti-collision circuit structure is that the input power supply V1 is connected in parallel with the capacitor C2, the output end of the input power supply V1 is connected with the driving switch tube Q2, the driving switch tube Q2 is connected with the control IC and the motor M1 respectively, the other end of the motor M1 is connected with the secondary anti-collision protection switch S2, the other end of the secondary anti-collision protection switch S2 is connected with the anode of the diode D2, the cathode of the diode D2 is connected with the driving switch tube Q3, the other end of the driving switch tube Q3 is connected with the sampling resistor Rsense and the control IC respectively, and the other end of the sampling resistor Rsense is connected with the control IC and the common ground end of the circuit respectively.

[0040] As shown in Figure 5 , 6 The secondary anti-collision protection switches S1 and S2 are respectively installed at the maximum stroke position of the walking mechanism or the upper and lower positions of the walking mechanism.

[0041] The Hall sensor is composed of a Hall sensor and an induction magnet, and the Hall sensor and the induction magnet are respectively installed at the walking mechanism and the maximum stroke of the walking track of the walking mechanism.

[0042] One end of the sampling resistor Rsense is connected with the forward rotation anti-collision circuit and the reverse rotation anti-collision circuit, and the other end is connected with the control IC, and the current signal is collected and sent to the control IC.

[0043] Working principle:

[0044] Under normal working conditions: the secondary anti-collision protection switches S1 and S2 are in a closed state, as shown in Figure 2As shown, when rotating forward (the core walks upward), the driving switch tube Q1 and Q4 are opened, the driving switch tube Q2 and Q3 are closed, the current flows through the driving switch tube Q1->diode D1->secondary anti-top protection switch S1->motor M1->driving switch tube Q4->sampling resistor Rsense. Since the diode has unidirectional conductivity, the diode D2 is not conductive when rotating forward, and the current can only flow to D1. As shown, Figure 3 As shown, when rotating backward (the core walks downward), the driving switch tube Q2 and Q3 are opened, the driving switch tube Q1 and Q4 are closed, the current flows through the driving switch tube Q2->motor M1->secondary anti-top protection switch S2->diode D2->driving switch tube Q3->sampling resistor Rsense. In this embodiment, the Hall sensor is installed near the top and bottom positions of the massage core track, the core runs to the Hall position to detect the Hall signal, and sends the Hall signal to the control IC, which controls the core to stop and then walk backward. In the forward anti-top circuit and the backward anti-top circuit, only one diode in the same direction is provided, and in actual application, multiple diodes can be connected in parallel according to the current size to improve the overcurrent capacity.

[0045] When the Hall sensor fails, for example, when rotating forward, the massage core will continue to walk upward until the secondary anti-top protection switch S1 is triggered, as shown, Figure 4 At this time, the forward anti-top circuit is disconnected, the current in the circuit is 0, the motor M1 that controls the massage core to walk is stopped from working, and the massage core is prevented from toppling; at this time, the sampling resistor can detect that the current flowing through the motor M1 is 0, and send the detected current signal to the control IC, which determines that the Hall sensor has failed according to the current signal, controls the motor to walk backward through the control switch tube, and makes the massage core run to the normal walking track and continue to walk, ensuring that the massage chair can operate normally in the case of Hall sensor failure.

[0046] In the embodiments of the present application, "at least one" means one or more, and "multiple" means two or more. The association relationship of the associated objects is described, which means that there can be three kinds of relationships, for example, A and / or B, which means that A exists alone, A and B exist together, and B exists alone. Wherein A, B can be singular or plural. The character " / " generally represents an "or" relationship between the front and rear associated objects. "At least one of the following" and the like means any combination of these items, including single or multiple items. For example, at least one of a, b and c can mean: a, b, c, a and b, a and c, b and c, or a and b and c, wherein a, b, c can be single or multiple.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A massage chair anti-bumping circuit device, characterized in that, The device comprises an input power supply V1, a control IC, a forward rotation anti-collision circuit, a reverse rotation anti-collision circuit, secondary anti-collision protection switches S1 and S2, and a sampling resistor Rsense. An input end of the control IC is connected with the Hall sensor and the sampling resistor Rsense, and receives signals transmitted by the Hall sensor and the sampling resistor Rsense; an output end of the control IC is connected with the forward rotation anti-collision circuit and the reverse rotation anti-collision circuit; the Hall sensor is used for detecting a travel signal of the walking machine core, and the sampling resistor Rsense is used for detecting a current signal of the motor M1 that controls the walking of the walking machine core. The forward rotation anti-collision circuit and the reverse rotation anti-collision circuit respectively control the forward rotation and the reverse rotation of the motor M1 in response to control signals output by the control IC. The secondary anti-collision protection switches S1 and S2 are respectively connected in series in the forward rotation anti-collision circuit and the reverse rotation anti-collision circuit, and are installed in the massage chair and are triggered when the walking machine core walks to a preset travel distance; the secondary anti-collision protection switches S1 and S2 are respectively disconnected from the forward rotation anti-collision circuit and the reverse rotation anti-collision circuit when triggered. The input power supply V1 is used for providing electric energy for the device.

2. The anti-bumping circuit device of the massage chair according to claim 1, characterized in that: The forward rotation anti-collision circuit comprises: the input power supply V1 is connected in parallel with a capacitor C2; an output end of the input power supply V1 is connected with a driving switch tube Q1; the driving switch tube Q1 is connected with the control IC and an anode of a diode D1, respectively; a cathode of the diode D1 is connected with the secondary anti-collision protection switch S1; the secondary anti-collision protection switch S1 is connected with the motor M1 at the other end; the motor M1 is connected with a driving switch tube Q4 at the other end; the driving switch tube Q4 is connected with the sampling resistor Rsense and the control IC at the other end, respectively; and the sampling resistor Rsense is connected with the control IC and a common ground end of the circuit at the other end.

3. The anti-bumping circuit device of the massage chair according to claim 1, characterized in that: The reverse rotation anti-collision circuit comprises: the input power supply V1 is connected in parallel with a capacitor C2; an output end of the input power supply V1 is connected with a driving switch tube Q2; the driving switch tube Q2 is connected with the control IC and the motor M1, respectively; the motor M1 is connected with the secondary anti-collision protection switch S2 at the other end; the secondary anti-collision protection switch S2 is connected with an anode of a diode D2 at the other end; a cathode of the diode D2 is connected with a driving switch tube Q3; the driving switch tube Q3 is connected with the sampling resistor Rsense and the control IC at the other end, respectively; and the sampling resistor Rsense is connected with the control IC and a common ground end of the circuit at the other end.

4. The anti-bumping circuit device of the massage chair according to claim 1, characterized in that: The secondary anti-collision protection switches S1 and S2 are respectively installed at maximum travel positions of the walking machine core or at upper and lower positions of the walking machine core.

5. The anti-bumping circuit device of the massage chair according to claim 1, characterized in that: The Hall sensor comprises a Hall sensor and an induction magnet, and the Hall sensor and the induction magnet are respectively installed at both ends of a maximum travel of the walking machine core and a walking track of the walking machine core.

6. The anti-bumping circuit device of the massage chair according to claim 1, characterized in that: One end of the sampling resistor Rsense is connected with the forward rotation anti-collision circuit and the reverse rotation anti-collision circuit, and the other end is connected with the control IC, so as to collect current signals and send the current signals to the control IC.

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