Massaging appliance electric hammer capable of being automatically controlled to be turned off

Abstract

The utility model relates to the technical field of massage appliances, in particular to a massage appliance electric hammer capable of being automatically controlled to be turned off, which comprises a coil mounting cylinder, an electromagnet coil, an iron-containing hammer head, a light-emitting element and a photosensitive element, when the iron-containing hammer head is at an initial position, light emitted by the light-emitting element is shielded, and the photosensitive element is not conducted; when the iron-containing hammer head moves to the center of the electromagnet coil, light rays emitted by the light-emitting element are not shielded by the iron-containing hammer head, the photosensitive element is conducted, the electromagnet coil is automatically closed, and meanwhile, the iron-containing hammer head moves to the maximum magnetic force point and then continuously moves with inertia; the electric hammer has the advantages that insufficient suction caused by too early turn-off is avoided, inertial constraint caused by too late turn-off is also avoided, the beating massage effect is exerted to the maximum extent, and the problem of small massage strength of the electric hammer is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of massage appliances, in particular to a massage appliance electric hammer capable of self - controlling shutdown. Background Art

[0002] In the massage appliance industry, electric hammers have been widely used. The essence of an electric hammer is a hollow electromagnet. When powered on, it generates magnetic force to attract an iron hammer head and make the hammer head move. This process has a knocking massage effect on the human body.

[0003] However, at present, the knocking force of electric hammers in the massage industry is small, especially for electric hammers and their control systems that use a safety voltage within 36V. The fundamental reason is that the timing of turning off the hollow magnet cannot be mastered. The strongest magnetic force point of the hollow magnet is at the center of the coil. Traditional technology controls the energization duration of the coil by timing. When the time is up, the coil is turned off. Since the position of the hammer head is not fixed at the beginning of movement, there are probably two undesirable situations when turning off by timing: one is that when the energization timing ends, the hammer head has not reached the center of the coil where the magnetic force is the strongest, and then the hammer head continues to move by inertia and knocks on the human body. In this process, the maximum efficiency of the coil is not exerted. The other is that before the energization timing ends, the hammer head has already reached the center of the coil. Because the coil is still energized, the inertial force of the hammer head moving forward is counteracted by the magnetic force of the coil, which hinders the continuous movement of the hammer head and also does not exert the maximum efficiency of the coil.

[0004] In summary, the knocking force of the electric hammer using a safety voltage within 36V in the prior art is small, resulting in an unsatisfactory massage effect. Content of the Utility Model

[0005] The purpose of the utility model is to provide a massage appliance electric hammer capable of self - controlling shutdown, so as to solve the problem that the knocking force of the electric hammer using a safety voltage within 36V in the prior art is small, resulting in an unsatisfactory massage effect.

[0006] To achieve the above purpose, the utility model provides a massage appliance electric hammer capable of self - controlling shutdown. The massage appliance electric hammer capable of self - controlling shutdown includes a coil installation cylinder, an electromagnet coil, an iron hammer head, a light - emitting element, and a photosensitive element. The electromagnet coil is arranged outside the coil installation cylinder, the iron hammer head is arranged inside the coil installation cylinder, the light - emitting element and the photosensitive element are arranged at one end of the coil installation cylinder away from the human body, and the light - emitting element and the photosensitive element are respectively located on both sides of the iron hammer head.

[0007] Wherein, the massage appliance electric hammer capable of self - controlling shutdown further includes a control circuit for controlling the operation of the iron hammer head.

[0008] Among them, the control circuit includes comparator U1B, resistor R9, infrared receiving diode Q5, infrared emitting diode LED3, current-limiting resistor R7, pull-up resistor R8, resistor R10, MOSFET power transistor Q6, and diode D3. The inverting input of comparator U1B is set to a 2.5V voltage. The control level IO output by the MCU is connected in series with resistor R9 and is connected to the non-inverting input terminal of comparator U1B. The infrared receiving diode Q5 is connected to the non-inverting input terminal of comparator U1B. The infrared emitting diode LED3 is connected in series with current-limiting resistor R7 and is constantly lit by VCC power supply. The output terminal of comparator U1B is connected to VCC through pull-up resistor R8 and is connected in series with resistor R10 and is connected to the gate of MOSFET power transistor Q6. The drain of MOSFET power transistor Q6 is connected to the electromagnet coil and forms a current loop with the other end of the electromagnet coil connected to VDD. The two ends of the electromagnet coil are connected in parallel with diode D3.

[0009] Among them, the control circuit includes comparator U1C, resistor R5, infrared emitting diode LED2, current-limiting resistor R3, pull-up resistor R4, infrared receiving diode Q3, resistor R6, MOSFET power transistor Q4, and diode D2. The inverting input of comparator U1C is set to a 2.5V voltage. The control level IO output by the MCU is connected in series with resistor R5 and is connected to the non-inverting input terminal of comparator U1C. The infrared emitting diode LED2 is connected in series with current-limiting resistor R3 and is constantly lit by VCC power supply. The output terminal of comparator U1C is connected to VCC through pull-up resistor R4 and is connected to infrared receiving diode Q3, and is connected in series with resistor R6 and is connected to the gate of MOSFET power transistor Q4. The drain of MOSFET power transistor Q4 is connected to the electromagnet coil and forms a current loop with the other end of the electromagnet coil connected to VDD. The two ends of the electromagnet coil are connected in parallel with diode D2.

[0010] Among them, the control circuit includes infrared emitting diode LED1, current-limiting resistor R1, resistor R2, infrared receiving diode Q1, MOSFET power transistor Q2, and diode D1. The infrared emitting diode LED1 is connected in series with current-limiting resistor R1 and is constantly lit by VCC power supply. The control level IO of the MCU is connected in series with resistor R2 and is connected to infrared receiving diode Q1 and is also connected to the gate of MOSFET power transistor Q2. The drain of MOSFET power transistor Q2 is connected to the electromagnet coil and forms a current loop with the other end of the electromagnet coil connected to VDD. The two ends of the electromagnet coil are connected in parallel with diode D1.

[0011] A hammer drill for a massage appliance with self - controlled shutdown according to the present utility model includes a coil mounting cylinder, an electromagnet coil, an iron - containing hammer head, a light - emitting element, and a photosensitive element. When the iron - containing hammer head is in the initial position, it blocks the light emitted by the light - emitting element, and the photosensitive element is not conducting. At this time, the electromagnet coil is energized to generate magnetism, driving the iron - containing hammer head to move. When the iron - containing hammer head runs to the center of the electromagnet coil, the light emitted by the light - emitting element is not blocked by the iron - containing hammer head, the photosensitive element conducts, automatically turning off the electromagnet coil. At the same time, the iron - containing hammer head runs to the maximum magnetic force point and then continues to run by inertia, avoiding insufficient suction due to premature shutdown and also avoiding inertial restraint due to late shutdown, maximizing the knocking and massaging effect and solving the problem of weak massage force of the hammer drill. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following - described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0013] Figure 1 FIG. is a schematic structural diagram of a hammer drill for a massage appliance with self - controlled shutdown provided by the present utility model.

[0014] Figure 2 FIG. is a schematic circuit diagram of the control power supply in the first embodiment of the present utility model.

[0015] Figure 3 FIG. is a schematic circuit diagram of the control power supply in the second embodiment of the present utility model.

[0016] Figure 4 FIG. is a schematic circuit diagram of the control power supply in the third embodiment of the present utility model.

[0017] 101 - coil mounting cylinder, 102 - electromagnet coil, 103 - iron - containing hammer head, 104 - light - emitting element, 105 - photosensitive element. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following details the embodiments of the present utility model. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.

[0019] Please refer to Figure 1, the present utility model provides a massage appliance electric hammer with self-controlled shutdown. The massage appliance electric hammer with self-controlled shutdown includes a coil mounting cylinder 101, an electromagnet coil 102, an iron-containing hammer head 103, a light-emitting element 104, and a photosensitive element 105. The electromagnet coil 102 is disposed outside the coil mounting cylinder 101, the iron-containing hammer head 103 is disposed inside the coil mounting cylinder 101, the light-emitting element 104 and the photosensitive element 105 are disposed at one end of the coil mounting cylinder 101 away from the human body, and the light-emitting element 104 and the photosensitive element 105 are respectively located on both sides of the iron-containing hammer head 103.

[0020] In this embodiment, when the iron-containing hammer head 103 is in the initial position, it blocks the light emitted by the light-emitting element 104, and the photosensitive element 105 is not turned on. At this time, the electromagnet coil 102 is energized to generate magnetism, driving the iron-containing hammer head 103 to move. When the iron-containing hammer head 103 runs to the center of the electromagnet coil 102, the light emitted by the light-emitting element 104 is not blocked by the iron-containing hammer head 103, the photosensitive element 105 is turned on, automatically turning off the electromagnet coil 102. At the same time, the iron-containing hammer head 103 runs to the maximum magnetic force point, and then continues to run by inertia, avoiding insufficient suction due to premature shutdown and also avoiding inertial restraint due to late shutdown, maximizing the knocking and massage effect, and solving the problem of small massage force of the electric hammer.

[0021] Among them, solutions such as a microswitch or a travel switch can be adopted to replace the light-emitting element 104 and the photosensitive element 105. When the iron-containing hammer head runs to the center of the electromagnet coil, the switch is triggered, automatically turning off the electromagnet coil 102. At the same time, the iron-containing hammer head 103 runs to the maximum magnetic force point, and then continues to run by inertia, avoiding insufficient suction due to premature shutdown and also avoiding inertial restraint due to late shutdown, maximizing the knocking and massage effect, and solving the problem of small massage force of the electric hammer.

[0022] Furthermore, the massage appliance electric hammer with self-controlled shutdown further includes a control circuit for controlling the operation of the iron-containing hammer head 103.

[0023] First Embodiment:

[0024] Please refer to Figure 2 , Figure 2 which is the circuit schematic diagram of the control circuit in the first embodiment.

[0025] The utility model provides a massage appliance electric hammer with self-controlled shutdown, and a control circuit is arranged on the massage appliance electric hammer with self-controlled shutdown. The control circuit includes a comparator U1B, a resistor R9, an infrared receiving diode Q5, an infrared emitting diode LED3, a current-limiting resistor R7, a pull-up resistor R8, a resistor R10, a MOSFET power tube Q6, and a diode D3. The inverting input of the comparator U1B is set to a voltage of 2.5V. The control level IO output by the MCU is connected in series with the resistor R9 and is connected to the non-inverting input terminal of the comparator U1B. The infrared receiving diode Q5 is connected to the non-inverting input terminal of the comparator U1B. The infrared emitting diode LED3 is connected in series with the current-limiting resistor R7 and is constantly lit by VCC. The output terminal of the comparator U1B is connected to VCC through the pull-up resistor R8 and is connected in series with the resistor R10 and is connected to the gate of the MOSFET power tube Q6. The drain of the MOSFET power tube Q6 is connected to the electromagnet coil 102, and forms a current loop with the other end of the electromagnet coil 102 connected to VDD. The two ends of the electromagnet coil 102 are connected in parallel with the diode D3 for turn-off counter electromotive force freewheeling.

[0026] In this embodiment, when the iron-containing hammer head 103 is in the initial position, it blocks the light emitted by the infrared emitting diode LED3, and the infrared receiving diode Q5 is not turned on. The comparator U1B is controlled by the control level IO output by the MCU. When IO outputs a high level, the output of the comparator U1B is pulled up to a high level by the pull-up resistor R8, the MOSFET power tube Q6 is turned on, the electromagnet coil 102 is energized to generate magnetism, and the iron-containing hammer head 103 moves. When it runs to the center of the electromagnet coil 102, it breaks away from the light shielding area. After the infrared receiving diode Q5 is illuminated, it is turned on, pulling down the non-inverting input of the comparator U1B, and the output of the comparator U1B becomes a low level, turning off the output of the MOSFET power tube Q6, and the electromagnet coil 102 is turned off.

[0027] Second Embodiment:

[0028] Please refer to Figure 3 , Figure 3 which is the circuit schematic diagram of the control circuit in the second embodiment.

[0029] The present utility model provides a massage appliance electric hammer with self-controlled shutdown. A control circuit is provided on the massage appliance electric hammer with self-controlled shutdown. The control circuit includes a comparator U1C, a resistor R5, an infrared light-emitting diode LED2, a current-limiting resistor R3, a pull-up resistor R4, an infrared receiving diode Q3, a resistor R6, a MOSFET power transistor Q4, and a diode D2. The inverting input of the comparator U1C is set to a 2.5V voltage. The control level IO output by the MCU is connected in series with the resistor R5 and is connected to the non-inverting input terminal of the comparator U1C. The infrared light-emitting diode LED2 is connected in series with the current-limiting resistor R3 and is constantly lit by VCC power supply. The output terminal of the comparator U1C is connected to VCC through the pull-up resistor R4, is connected to the infrared receiving diode Q3, and is connected in series with the resistor R6 to the gate of the MOSFET power transistor Q4. The drain of the MOSFET power transistor Q4 is connected to the electromagnet coil 102, and forms a current loop with the other end of the electromagnet coil 102 connected to VDD. The two ends of the electromagnet coil 102 are connected in parallel with the diode D2 for shutdown counter electromotive force freewheeling.

[0030] In this embodiment, when the iron-containing hammer head 103 is in the initial position, it blocks the light emitted by the infrared light-emitting diode LED2, and the infrared receiving diode Q3 is not conducting. The comparator U1C is controlled by the control level IO output by the MCU. When IO outputs a high level, the output of the comparator U1C is pulled up to a high level by the pull-up resistor R4, the MOSFET power transistor Q4 conducts, the electromagnet coil 102 is energized to generate magnetism, and the iron-containing hammer head 103 moves. When it runs to the center of the electromagnet coil 102, it exits the light-blocking area. After the infrared receiving diode Q3 is illuminated, it conducts, pulls down the output of the comparator U1C, shuts off the output of the MOSFET power transistor Q4, and shuts off the electromagnet coil 102.

[0031] Third Embodiment:

[0032] Please refer to Figure 4 , Figure 4 which is the circuit schematic diagram of the control circuit in the third embodiment.

[0033] The utility model provides a massage appliance electric hammer with self-controllable shutdown, wherein the massage appliance electric hammer with self-controllable shutdown is provided with the control circuit, wherein the control circuit comprises an infrared light emitting tube LED1, a current limiting resistor R1, a resistor R2, an infrared receiving diode Q1, a MOSFET power tube Q2 and a diode D1, wherein the infrared light emitting tube LED1 is connected in series with the current limiting resistor R1, and is always on when powered by VCC, wherein the control level IO of MCU is connected in series with the resistor R2, and is connected with the infrared receiving diode Q1, and is connected with the gate of the MOSFET power tube Q2, wherein the drain of the MOSFET power tube Q2 is connected with the electromagnet coil 102, and forms a current loop with the other end of the electromagnet coil 102 connected with VDD, and the two ends of the electromagnet coil 102 are connected in parallel with the diode D1.

[0034] In this embodiment, when the iron-containing hammer head 103 is in the initial position, it blocks the light emitted by the infrared light-emitting tube LED1, and the infrared receiving diode Q1 is not turned on. When the control level IO output by the MCU outputs a high level, the MOSFET power tube Q2 is turned on, and the electromagnet coil 102 is energized to generate magnetism. The iron-containing hammer head 103 moves, and when it runs to the center of the electromagnet coil 102, it leaves the light blocking area. The infrared receiving diode Q1 is turned on after receiving light, pulling down the gate of the MOSFET power tube Q2, turning off the output of the MOSFET power tube Q2, and the electromagnet coil 102 is turned off.

[0035] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.

Claims

1. A massage appliance electric hammer that can self-control shutdown, characterized in that it includes a coil installation cylinder, an electromagnet coil, an iron-containing hammer head, a light-emitting element and a photosensitive element. The electromagnet coil is arranged outside the coil installation cylinder, the iron-containing hammer head is arranged inside the coil installation cylinder, the light-emitting element and the photosensitive element are arranged at one end of the coil installation cylinder away from the human body, and the light-emitting element and the photosensitive element are respectively located on both sides of the iron-containing hammer head.

2. The massage appliance electric hammer that can self-control shutdown according to claim 1, characterized in that the massage appliance electric hammer that can self-control shutdown further includes a control circuit for controlling the operation of the iron-containing hammer head.

3. The massage appliance electric hammer that can self-control shutdown according to claim 2, characterized in that the control circuit includes a comparator U1B, a resistor R9, an infrared receiving diode Q5, an infrared light-emitting diode LED3, a current-limiting resistor R7, a pull-up resistor R8, a resistor R10, a MOSFET power tube Q6 and a diode D3. The inverting input of the comparator U1B is set to a voltage of 2.5V. The control level IO output by the MCU is connected in series with the resistor R9 and connected to the non-inverting input terminal of the comparator U1B. The infrared receiving diode Q5 is connected to the non-inverting input terminal of the comparator U1B. The infrared light-emitting diode LED3 is connected in series with the current-limiting resistor R7 and is constantly lit by VCC. The output terminal of the comparator U1B is connected to VCC through the pull-up resistor R8 and is connected in series with the resistor R10 and connected to the gate of the MOSFET power tube Q6. The drain of the MOSFET power tube Q6 is connected to the electromagnet coil and forms a current loop with the other end of the electromagnet coil connected to VDD. The two ends of the electromagnet coil are connected in parallel with the diode D3.

4. The massage appliance electric hammer that can self-control shutdown according to claim 2, characterized in that the control circuit includes a comparator U1C, a resistor R5, an infrared light-emitting diode LED2, a current-limiting resistor R3, a pull-up resistor R4, an infrared receiving diode Q3, a resistor R6, a MOSFET power tube Q4 and a diode D2. The inverting input of the comparator U1C is set to a voltage of 2.5V. The control level IO output by the MCU is connected in series with the resistor R5 and connected to the non-inverting input terminal of the comparator U1C. The infrared light-emitting diode LED2 is connected in series with the current-limiting resistor R3 and is constantly lit by VCC. The output terminal of the comparator U1C is connected to VCC through the pull-up resistor R4 and is connected to the infrared receiving diode Q3, and is connected in series with the resistor R6 and connected to the gate of the MOSFET power tube Q4. The drain of the MOSFET power tube Q4 is connected to the electromagnet coil and forms a current loop with the other end of the electromagnet coil connected to VDD. The two ends of the electromagnet coil are connected in parallel with the diode D2.

5. The massage appliance electric hammer that can self-control shutdown according to claim 3, characterized in that The control circuit includes an infrared light-emitting diode LED1, a current-limiting resistor R1, a resistor R2, an infrared receiving diode Q1, a MOSFET power transistor Q2, and a diode D1. The infrared light-emitting diode LED1 is connected in series with the current-limiting resistor R1 and is constantly lit by VCC. The control level IO of the MCU is connected in series with the resistor R2, is connected to the infrared receiving diode Q1, and is also connected to the gate of the MOSFET power transistor Q2. The drain of the MOSFET power transistor Q2 is connected to the electromagnet coil, and forms a current loop with the other end of the electromagnet coil connected to VDD. The two ends of the electromagnet coil are connected in parallel with the diode D1.

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