Baby carriage touch control circuit and electric baby carriage

Abstract

The utility model provides a buggy touch control circuit and electric buggy, wherein the buggy touch control circuit comprises a step-down circuit, a touch circuit and a light indicating circuit which are electrically connected in sequence, the light indicating circuit comprises a first gear indicating lamp and a second gear indicating lamp, the step-down circuit is used for sampling and step-down an external power supply to supply power to the touch circuit and the light indicating circuit, and the touch circuit is used for receiving a touch signal to switch connection between the light indicating circuit and the step-down circuit, so that the light indicating circuit controls the first gear indicating lamp or the second gear indicating lamp to be lightened. Therefore, gear control of the child vehicle is achieved in a touch sensing mode, the touch control circuit is high in sensitivity and quick in response, operation of a driver is facilitated, and the driving experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of children's toy cars, and in particular to a touch control circuit for a baby carriage and an electric baby carriage. Background Art

[0002] In existing children's vehicles, traditional mechanical switches are mostly used to achieve the forward / reverse or high / low speed switching of the vehicle. The use of transmission mechanical switches has a low cost, however, the failure rate is high. For children with insufficient strength, there are problems such as inconvenient pressing operation and insensitive sensing, which affects the driving experience of the vehicle. Utility Model Content

[0003] The utility model aims to provide a baby carriage touch control circuit which can support touch sensing and is easy to operate, and an electric baby carriage using the baby carriage touch control circuit.

[0004] In order to achieve the above objectives, the utility model provides the following technical solutions:

[0005] The utility model provides a touch control circuit for a baby carriage, comprising a step-down circuit, a touch circuit and a light indication circuit which are electrically connected in sequence, wherein the light indication circuit comprises a first gear indicator light and a second gear indicator light which are both luminous LEDs, the step-down circuit is used for sampling and stepping down an external power supply to supply power to the touch circuit and the light indication circuit, and the touch circuit is used for receiving a touch signal to switch the connection between the light indication circuit and the step-down circuit, so that the light indication circuit controls the first gear indicator light or the second gear indicator light to be illuminated.

[0006] In one embodiment, the step-down circuit includes a voltage regulator chip TL431 and a sampling circuit, the sampling circuit includes two first resistors R2 and R3 connected in series, the other end of one of the first resistors R2 is connected to the positive electrode of the external power supply through the second resistor R1, and the other end of the other first resistor R3 is connected to the negative electrode of the power supply, pin 1 of the voltage regulator chip TL431 is connected to the connection between the two first resistors R2 and R3, pin 2 of the voltage regulator chip is connected to the connection between R1 and R2 and outputs a DC voltage of 3V to the touch circuit, and pin 3 of the voltage regulator chip TL431 is grounded.

[0007] In one embodiment, a filter capacitor C1 and a filter capacitor C2 are provided between the voltage stabilizing chip TL431 and the touch circuit, and the filter capacitor C1 and the filter capacitor C2 are connected in parallel.

[0008] In one embodiment, the touch circuit includes an electrically connected touch spring and a touch chip AM01B, the touch spring is used to receive an external touch action signal and is connected to pin 3 of the touch chip AM01B via a third resistor R4, pins 4 and 5 of the touch chip AM01B are connected to pin 2 of the voltage regulator chip TL431, and the output end of the touch chip AM01B is connected to the light indication circuit.

[0009] In one implementation manner, a capacitor C3 is connected between pins 2 and 3 of the touch chip AM01B.

[0010] In one embodiment, the light indication circuit includes a transistor Q1, the base of which is connected to pin 1 of the touch chip, the first gear indicator light is connected between the base and the emitter of the transistor, and the second gear indicator light is connected between the collector and the emitter of the transistor.

[0011] In one embodiment, the baby carriage touch control circuit further includes an XH2.54 terminal, which is connected to the input end of the step-down circuit and is used to be plugged into a wiring terminal corresponding to an external power supply.

[0012] In addition, an electric baby carriage is also provided, which comprises the above-mentioned baby carriage touch control circuit.

[0013] The beneficial effects brought about by the technical solution provided by the utility model are as follows: the touch control circuit of the baby stroller of the utility model uses touch to realize the circuit of high-speed or low-speed speed regulation or forward and backward switching of the baby stroller, uses a voltage stabilizing chip to provide the circuit with a high-precision and low-ripple working power supply, reduces the malfunction of the touch circuit, and uses two gear indicator lights to display the corresponding gear, thereby realizing the gear control of the children's vehicle by touch sensing, and the touch control circuit has high sensitivity and fast response, which is convenient for the driver to operate and improves the driving experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments of the present invention.

[0015] Figure 1 A schematic diagram of a touch control circuit for a baby carriage provided in one embodiment of the utility model. DETAILED DESCRIPTION

[0016] The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0017] It should be understood that the various steps described in the method implementation of the present utility model can be performed in different orders and / or performed in parallel. In addition, the method implementation may include additional steps and / or omit the steps shown. The scope of the present utility model is not limited in this respect.

[0018] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "connected" may be directly connected or indirectly connected through intermediate components (elements). The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0019] It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish between devices, modules or units, and are not used to limit these devices, modules or units to be different devices, modules or units, nor are they used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0020] See also Figure 1 The utility model relates to a baby stroller touch control circuit and an electric baby stroller using the baby stroller touch control circuit, which realizes switching between two gears by using touch sensing, making it convenient for the driver to operate the baby stroller and improving the driving experience. The two gears can be a high-speed gear and a low-speed gear, or a forward gear and a reverse gear.

[0021] The touch control circuit of the baby carriage includes a step-down circuit, a touch circuit and a light indication circuit which are connected in sequence. The step-down circuit is used to connect to an external 24V power supply and sample and step down the external power supply to a 3V power supply to power the touch circuit and the light indication circuit. The light indication circuit includes a first gear indicator light and a second gear indicator light. The touch circuit is connected between the step-down circuit and the light indication circuit to receive an external touch signal to switch the connection between the two gear indicator lights and the step-down circuit so that the first gear indicator light or the second gear indicator light is lit, thereby realizing switching control and indication between the two gears, making it convenient for the driver to know the current gear information of the vehicle.

[0022] In one embodiment, the step-down circuit includes a sampling circuit and a voltage stabilizing chip TL431, the sampling circuit includes two first resistors R2 and R3 connected in series, the other end of one of the first resistors R2 is connected to the positive electrode of the external power supply through the second resistor R1, and the other end of the other first resistor R3 is connected to the negative electrode of the power supply, pin 1 of the voltage stabilizing chip TL431 is connected to the connection between the two first resistors R2 and R3, pin 2 of the voltage stabilizing chip is connected to the connection between R1 and R2 and outputs a DC voltage of 3V to the touch circuit, and pin 3 of the voltage stabilizing chip TL431 is grounded.

[0023] In one embodiment, a filter capacitor C1 and a filter capacitor C2 are provided between the voltage stabilizing chip TL431 and the touch circuit, and the filter capacitor C1 and the filter capacitor C2 are connected in parallel. By providing a filter circuit composed of a filter capacitor between the voltage stabilizing chip TL431 and the touch circuit, ripple in the power supply is filtered to reduce malfunction of the touch chip.

[0024] In one embodiment, the touch circuit includes an electrically connected touch spring U3 and a touch chip AM01B, the touch spring U3 is used to receive an external touch action signal, the touch spring U3 is connected to pin 3 of the touch chip AM01B via a third resistor R4, pins 4 and 5 of the touch chip AM01B are connected to pin 2 of the voltage regulator chip TL431, and the output end of the touch chip AM01B is connected to the light indication circuit.

[0025] In one implementation manner, a capacitor C3 is connected between pins 2 and 3 of the touch chip AM01B to improve the anti-interference capability of the touch circuit and avoid false triggering.

[0026] In one embodiment, the light indication circuit also includes a transistor Q1, the base of which is connected to pin 1 of the touch chip AM01B, the first gear indicator light LED3 is connected between the base and the emitter of the transistor, and the second gear indicator light LED2 is connected between the collector and the emitter of the transistor Q1.

[0027] Optionally, the output signal of the touch chip is used to control the on and off of the transistor Q1, so as to realize the high and low level conversion of the high and low speed control terminals of the baby stroller, so as to control the high and low speed states of the baby stroller. When the touch chip outputs a low level, Q1 is turned off, G / L is a high level, LED2 is on, and the baby stroller is in a high speed state. When the touch spring is touched, the touch chip continuously outputs a high level, Q1 is turned on, the G / L terminal is a low level, LED3 is on, LED2 is off, and the baby stroller is in a low speed state. Similarly, the switching control of the forward and reverse gears can be realized.

[0028] In one embodiment, the baby carriage touch control circuit further includes an XH2.54 terminal, which is connected to the input end of the step-down circuit and is used to be plugged into a wiring terminal corresponding to an external power supply.

[0029] The above description is only a preferred embodiment of the utility model and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the utility model is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the above utility model. For example, the above features are replaced with the technical features of the utility model (but not limited to) with similar functions in the utility model of the utility model to form a technical solution.

[0030] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

Claims

1. A baby stroller touch control circuit, characterized in that: It includes a step-down circuit, a touch circuit and a light indication circuit which are electrically connected in sequence. The light indication circuit includes a first gear indicator light and a second gear indicator light, both of which are luminous LEDs. The step-down circuit is used to sample and step down an external power supply to power the touch circuit and the light indication circuit. The touch circuit is used to receive a touch signal to switch the connection between the light indication circuit and the step-down circuit, so that the light indication circuit controls the first gear indicator light or the second gear indicator light to be lit.

2. The baby stroller touch control circuit according to claim 1, characterized in that: The step-down circuit includes a voltage regulator chip TL431 and a sampling circuit. The sampling circuit includes two first resistors R2 and R3 connected in series, wherein the other end of one of the first resistors R2 is connected to the positive electrode of the external power supply through the second resistor R1, and the other end of the other first resistor R3 is connected to the negative electrode of the power supply. Pin 1 of the voltage regulator chip TL431 is connected to the connection between the two first resistors R2 and R3, pin 2 of the voltage regulator chip is connected to the connection between R1 and R2 and outputs a DC voltage of 3V to the touch circuit, and pin 3 of the voltage regulator chip TL431 is grounded.

3. The baby carriage touch control circuit according to claim 2, characterized in that: A filter capacitor C1 and a filter capacitor C2 are provided between the voltage stabilizing chip TL431 and the touch circuit, and the filter capacitor C1 and the filter capacitor C2 are connected in parallel.

4. The baby carriage touch control circuit according to claim 1, characterized in that: The touch circuit includes an electrically connected touch spring and a touch chip AM01B. The touch spring is used to receive an external touch action signal and is connected to pin 3 of the touch chip AM01B via a third resistor R4. Pins 4 and 5 of the touch chip AM01B are connected to pin 2 of the voltage regulator chip TL431. The output end of the touch chip AM01B is connected to the light indication circuit.

5. The baby carriage touch control circuit according to claim 4, characterized in that: A capacitor C3 is connected between pins 2 and 3 of the touch chip AM01B.

6. The baby carriage touch control circuit according to claim 1, characterized in that: The light indication circuit includes a transistor Q1, the base of which is connected to pin 1 of the touch chip, the first gear indicator light is connected between the base and the emitter of the transistor, and the second gear indicator light is connected between the collector and the emitter of the transistor.

7. The baby carriage touch control circuit according to claim 1, characterized in that: It also includes an XH2.54 terminal, which is connected to the input end of the step-down circuit and is used to be plugged into a wiring terminal corresponding to an external power supply.

8. An electric baby carriage, characterized in that: The invention comprises the baby carriage touch control circuit as claimed in any one of claims 1 to 7.

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