Sofa foot pad and sofa deck chair

Abstract

According to the sofa foot pad and the sofa deck chair, the bottom surface of the sofa foot pad is connected with a copper foil touch sensing switch which is electrically connected with an MCU (Microprogrammed Control Unit) controller; the copper foil touch sensing switch is provided with a copper foil attached to the bottom surface of the sofa foot pad, and a detection signal is formed when the copper foil is touched, so that the MCU controller controls the foot pad turnover mechanism to stop withdrawing the foot pad according to the formed detection signal in the process of withdrawing the foot pad. According to the utility model, the false detection behavior is low, and the false operation of the sofa foot pad is reduced.

Description

Technical Field

[0001] The utility model relates to a sofa foot pad and a sofa recliner, belonging to the field of furniture. Background Art

[0002] At present, the intelligentization of furniture industry has become a trend, and various electric sofas and electric recliners are constantly emerging. While electric sofas and recliners bring us comfort, they also hide dangers. Once electric sofas and recliners and other equipment clamp carbon-based life forms such as humans and animals, they will cause serious harm.

[0003] The Chinese patent with the authorization announcement number CN 217524390 U discloses an infrared sensing anti-pinch mechanism for a smart sofa, wherein a slot is provided on one side of the sofa body, a first infrared emitting assembly is installed on the inner wall of the slot, and a foot pad is connected to the inner wall of the slot, the two sides of the foot pad are in contact with the two sides of the slot, a gear is connected to the inner wall of the slot, and a sliding mechanism is installed in the arc slot through the gear, a baffle is fixedly connected to the end of the elastic member away from the foot pad, and an infrared mechanism is installed on the lower surface of the baffle. This infrared sensing anti-pinch mechanism for a smart sofa can detect whether there is an obstacle when the foot pad is retracted through infrared rays. Once an obstacle is detected, that is, when a detection signal is present, the MCU controller is generally used to control the interruption of the retraction action of the foot pad to prevent the foot pad from being clamped by the obstacle.

[0004] However, when using infrared detection, there is a risk that the infrared light may be emitted outside the foot pad when the foot pad is raised. Therefore, there is a possibility of false detection when there is no obstacle under the foot pad but there is an obstacle outside the foot pad. That is, the sofa foot pad will produce an erroneous stop retraction action, and the user experience of the sofa recliner will be deteriorated due to the erroneous action of the foot pad. Utility Model Content

[0005] In view of the deficiencies in the prior art, one of the purposes of the present application is to provide a sofa foot pad that can accurately detect whether there is a carbon-based life form such as a human body under the foot pad when being retracted, so as to accurately stop the retraction action.

[0006] A sofa foot pad has a copper foil touch sensing switch electrically connected to an MCU controller on its bottom surface; the copper foil touch sensing switch has a copper foil attached to the bottom surface of the sofa foot pad, and generates a detection signal when the copper foil is touched, so that the MCU controller can control a foot pad flipping mechanism to stop retracting the foot pad according to the generated detection signal during the process of retracting the foot pad.

[0007] Preferably, the copper foil comprises a length portion and a width portion, the length portion is arranged at the bottom edge of the sofa foot pad along the length direction of the sofa foot pad, the width portion is located on both sides of the length portion and connected to the length portion, and the width portion is arranged at the bottom edge of the sofa foot pad along the width direction of the sofa foot pad.

[0008] Preferably, the output end of the copper foil touch sensing switch is connected to an amplifier circuit for amplifying the detection signal.

[0009] Preferably, the amplifier circuit is provided with a transistor for amplifying and outputting the detection signal.

[0010] Preferably, the transistor is an NPN transistor, whose collector is electrically connected to the detection sheet, whose emitter is grounded, and whose base is used to connect to the MCU controller.

[0011] Preferably, the collector is also connected to a voltage-stabilizing resistor R4.

[0012] Preferably, the base is also connected to a diode D33 which is arranged in parallel with the MCU controller.

[0013] Preferably, a positioning groove is provided on the bottom surface of the sofa foot pad, which is located at the outer edge of the copper foil and extends along the outer edge of the copper foil.

[0014] Another object of the present invention is to provide a sofa recliner, comprising the sofa foot pad described in the above technical solution. The sofa recliner has few malfunctions, a low error rate, and a good sofa user experience.

[0015] In summary, the utility model has the following beneficial effects:

[0016] 1: In the utility model, when the sofa foot pad is retracted, it can accurately detect whether there is a carbon-based life form such as a human body underneath it, so as to accurately stop the retraction.

[0017] 2: With the utility model, the sofa recliner has fewer malfunctions, a low error rate, and a good sofa user experience.

[0018] 3: In the utility model, a positioning groove is provided on the bottom surface of the foot pad, which is located at the outer edge of the copper foil and extends along the outer edge of the copper foil. When the copper foil is attached to the bottom surface of the foot pad, it is fitted with reference to the positioning groove, and the attachment can be completed quickly and accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of a sofa recliner;

[0020] Figure 2 This is the distribution diagram of copper foil on the bottom surface of the sofa foot pad.

[0021] Figure 3This is the connection diagram of the amplifier circuit;

[0022] Figure 4 This is a structural diagram of a sofa foot pad. DETAILED DESCRIPTION

[0023] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings.

[0024] Embodiment 1:

[0025] See attached Figure 1-2 The sofa foot pad shown is connected to a foot pad flipping mechanism 0 controlled by an MCU controller, as in the prior art, and can be retracted by flipping the foot pad flipping mechanism 0 (the foot pad flipping mechanism 0 is a necessary configuration structure for the foot pad to be flipped up and down, and is set according to actual conditions, and can be but not limited to an electric cylinder).

[0026] like Figure 1-2 As shown, the bottom surface of the sofa foot pad is connected with a copper foil touch sensing switch 1 representing a detection device, the copper foil touch sensing switch 1 is electrically connected to the MCU controller, and the copper foil touch sensing switch 1 has a copper foil 11 attached to the bottom surface of the sofa foot pad.

[0027] The copper foil 11 can be attached to the bottom surface of the sofa foot pad in the form of a whole surface. In this embodiment, Figure 2 As shown, the copper foil 11 includes a length portion 111 and a width portion 112. The length portion 111 is arranged at the bottom edge of the sofa foot pad along the length direction of the sofa foot pad, and the width portion 112 is located on both sides of the length portion 111 and connected to the length portion 111. The width portion 112 is arranged at the bottom edge of the sofa foot pad along the width direction of the sofa foot pad. This copper foil 11 reduces the amount of copper material used. At the same time, since it is arranged at the bottom edge of the foot pad, it is guaranteed to be effectively contacted, thereby ensuring the reliability of detection.

[0028] When the foot pad is retracted under the control of the foot pad flipping mechanism 0, once a carbon-based life form such as a person or an animal reaches under the foot pad and touches the copper foil 11, the copper foil touch sensing switch 1 will generate a detection signal and transmit it to the MCU controller. The MCU controller controls the foot pad flipping mechanism 0 to stop retracting the foot pad according to the generated detection signal to prevent carbon-based life forms such as humans and animals from being pinched.

[0029] Since this detection signal is generated only when the copper foil 11 under the foot pad is touched, it will not be generated under other circumstances. In other words, the detection will only be made when there is a carbon-based life form such as a human body under the foot pad. Therefore, compared with the prior art method of using infrared equipment to obtain detection signals for sofa foot pads, false detection will not occur, and it is possible to accurately detect whether there is a carbon-based life form such as a human body under the foot pad, thereby accurately stopping the foot pad from retracting.

[0030] The output end of the copper foil touch sensing switch 1 is connected to an amplifier circuit, specifically, the switch circuit board 12 of the copper foil touch sensing switch 1 is connected to an amplifier circuit, the amplifier circuit amplifies the detection signal, and the output end of the amplifier circuit outputs the amplified signal, and then the MCU controller controls the foot pad flipping mechanism 0 according to the amplified detection signal, so that the sofa foot pad stops retracting.

[0031] See attached Figure 3 As shown, a transistor is provided in the amplifier circuit, and the detection signal is amplified and outputted through the transistor. The transistor is specifically an NPN transistor, whose collector is electrically connected to the detection sheet, whose emitter is grounded, and whose base is used to connect to the MCU controller. Using the transistor as the main component of the amplifier circuit, the structure of the entire amplifier circuit is very simple.

[0032] The collector of the triode is also connected to a voltage-stabilizing resistor R4, which stabilizes the voltage of the collector within a certain range and can also improve the amplification ability and stability of the triode. The voltage-stabilizing resistor R4 is 8K-15K, and the base is also connected to a diode D33 arranged in parallel with the MCU controller. The positive electrode of the diode D33 is connected to the base, and the negative electrode is grounded to prevent the current from flowing in the opposite direction.

[0033] Embodiment 2: Based on Embodiment 1, in this embodiment, Figure 4 As shown, the bottom surface of the foot pad is provided with a positioning groove 2 located at the outer edge of the copper foil 11 and extending along the outer edge of the copper foil 11. When the copper foil 11 is attached to the bottom surface of the foot pad, it is fitted with reference to the positioning groove 2, and the attachment can be completed quickly and accurately.

[0034] Embodiment 3: Embodiment 3 relates to a sofa recliner, which includes the sofa foot pad of Embodiment 2. When the foot pad is retracted, there are few malfunctions and a low error rate, and the sofa recliner provides a good user experience.

[0035] The above embodiments are only for describing the preferred implementation of the utility model, and are not intended to limit the concept and scope of the utility model. Without departing from the design concept of the utility model, various modifications and improvements made by ordinary persons in the art to the technical solution of the utility model should fall within the protection scope of the utility model, and the technical contents of the utility model for protection have been fully recorded in the claims.

Claims

1. A sofa foot pad, characterized in that: The bottom surface of the sofa foot pad is connected to a copper foil touch sensing switch (1) electrically connected to an MCU controller; the copper foil touch sensing switch (1) comprises a copper foil (11) attached to the bottom surface of the sofa foot pad, and generates a detection signal when the copper foil (11) is touched, so that the MCU controller can control a foot pad flipping mechanism to stop retracting the foot pad according to the generated detection signal during the process of retracting the foot pad.

2. A sofa foot pad according to claim 1, characterized in that: The copper foil (11) comprises a length portion (111) and a width portion (112), wherein the length portion (111) is arranged at the bottom edge of the sofa foot pad along the length direction of the sofa foot pad, the width portion (112) is located on both sides of the length portion (111) and is connected to the length portion (111), and the width portion (112) is arranged at the bottom edge of the sofa foot pad along the width direction of the sofa foot pad.

3. A sofa foot pad according to claim 1, characterized in that: The output end of the copper foil touch sensing switch (1) is connected to an amplifier circuit for amplifying the detection signal.

4. A sofa foot pad according to claim 3, characterized in that: The amplifier circuit is provided with a transistor for amplifying and outputting the detection signal.

5. A sofa foot pad according to claim 4, characterized in that: The transistor is an NPN transistor, the collector of which is electrically connected to the detection sheet, and the emitter of which is grounded. Its base is used to connect to the MCU controller.

6. A sofa foot pad according to claim 5, characterized in that: The collector is also connected to a voltage-stabilizing resistor R4.

7. The sofa foot pad according to claim 5, characterized in that: The base is also connected to a diode D33 which is arranged in parallel with the MCU controller.

8. The sofa foot pad according to claim 1, characterized in that: The bottom surface of the sofa foot pad is provided with a positioning groove (2) located at the outer edge of the copper foil (11) and extending along the outer edge of the copper foil (11).

9. A sofa recliner, characterized in that: The invention relates to a sofa foot pad comprising the sofa foot pad as described in any one of claims 1 to 8.

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