A pressure trigger mechanism for electric mattress braking

Abstract

The utility model discloses a pressure trigger mechanism for electric mattress brake, include: the top of casing is equipped with the through -going orifice, pressure sensing module, including setting in the pressure sensor of casing inner bottom surface, pressure transmission spare, set in the top of pressure sensor, and its lower extreme with the first elastic member that is equipped between casing inner bottom surface, the lower part of pressure receiving member is equipped with the second elastic member between pressure transmission spare, and pressure receiving member has the contact portion that protrudes upwards the through -going orifice, wherein, pressure sensing module is used for detecting the pressure that pressure transmission spare transmits, and when the pressure reaches predetermined value, output trigger signal. The utility model can perceive mechanical pressure in the instant that mattress contacts bed head board, and output trigger signal in the early stage of physical contact, and response is more rapid, and reduces motor damage, and the safety and reliability of electric mattress in the use process are promoted.

Description

Technical Field

[0001] This utility model relates to the field of electric mattress technology, specifically to a pressure triggering mechanism for braking an electric mattress. Background Technology

[0002] With the popularization of healthy living concepts and the development of smart homes, electric mattresses have become widely used in home and medical care settings because they can flexibly adjust the angle of different areas of the mattress (such as the back and legs) through a built-in motor-driven push rod, providing users with a comfortable posture for reading, watching movies, or resting. Their core function relies on a stable and reliable motor drive system to control the lifting of the mattress structure.

[0003] In practical use, electric mattresses are typically placed on traditional bed frames. These frames generally have a fixed headboard, which is usually 5 to 10 centimeters thick. When an electric mattress is placed on such a headboard, the raised back area is prone to dynamic interference with the hard headboard during the lifting process. Especially in cases of improper initial installation, mattress misalignment, or user error, the mattress back will forcefully press against the headboard under the continuous drive of the motor. This forced pressure can not only cause the mattress fabric to be squeezed, worn, or even torn, but the internal support structure (such as individually pocketed springs and high-density foam) may also deform and be damaged due to continuous pressure. At the same time, the motor and push rod mechanism will experience a surge in operating current due to the sudden increase in resistance, which can easily lead to overheating and burnout of the motor windings or overload damage to the push rod structure, posing a safety hazard.

[0004] Currently, some high-end electric motor beds are equipped with current detection modules that monitor motor current to determine if there is an overload. However, this current detection method can only respond after the resistance is conducted to the motor and causes a significant increase in current, which can cause considerable damage to the motor. Utility Model Content

[0005] The purpose of this invention is to provide a pressure triggering mechanism for braking electric mattresses, which can sense mechanical pressure the moment the mattress contacts the headboard, output a trigger signal at the initial stage of physical contact, respond more quickly, reduce motor damage, and improve the safety and reliability of electric mattresses during use.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a pressure triggering mechanism for braking an electric mattress, comprising: The casing has a perforation at its top; The pressure sensing module includes a pressure sensor disposed on the bottom surface of the housing; A pressure transmitting element is disposed above the pressure sensor, and a first elastic element is provided between its lower end and the inner bottom surface of the housing; The pressure-bearing component has a second elastic element between its lower part and the pressure-transmitting component, and the pressure-bearing component has a contact portion that extends upward out of the through-hole; The pressure sensing module is used to detect the pressure transmitted by the pressure transmission component and output a trigger signal when the pressure reaches a predetermined value.

[0007] A further improvement of this utility model is that a guide structure is provided between the pressure transmitting member and the pressure receiving member. The guide structure includes a guide post provided on one of them and a sliding groove provided on the other. The guide post and the sliding groove are slidably engaged, and the second elastic member is sleeved on the guide post.

[0008] A further improvement of this invention is that the first elastic element is provided in at least three parts, and is arranged in a ring array around the pressure sensor.

[0009] A further improvement of this utility model is that the pressure transmitting component has an upper end face and a lower end face arranged in parallel, and the lower end face is provided with a positioning groove that cooperates with the first elastic component.

[0010] A further improvement of this invention is that the distance between the lower end face of the pressure transmitting element and the upper detection surface of the pressure sensor is less than 1 cm.

[0011] A further improvement of this utility model is that both the first elastic element and the second elastic element are springs, and the stiffness of the second elastic element is greater than that of the first elastic element.

[0012] A further improvement of this utility model is that the pressure sensing module further includes a circuit board electrically connected to the pressure sensor, the circuit board having a power interface and a signal interface, and the housing having a corresponding connection port.

[0013] A further improvement of this utility model is that the circuit board also integrates an alarm audio module, and the housing is provided with a corresponding sound outlet.

[0014] The beneficial effects of this utility model are as follows: This invention features an independent pressure triggering mechanism that utilizes the contact between the pressure-bearing component and the headboard. Mechanical pressure is sensed the instant the mattress contacts the headboard. The pressure-bearing component directly contacts the obstacle, enabling it to output a trigger signal at the initial stage of physical contact. Compared to traditional current detection methods, this provides a faster response and effectively avoids the risk of motor burnout due to overload or damage to the push rod structure, thus improving the safety and reliability of the electric mattress during use.

[0015] This invention ensures the vertical movement of the pressure-bearing component through the sliding cooperation between the guide post and the slide groove, preventing tilting and jamming, and allowing the pressure to be accurately transmitted to the sensor. A second elastic element is fitted onto the guide post, improving structural stability and saving space, making it suitable for installation environments with narrow mattress edges.

[0016] This invention integrates an alarm audio module onto the circuit board. When the mechanism is triggered, it not only outputs a control signal to stop the motor but also emits an audible alarm to immediately alert the user that the mattress is interfering with the headboard. This allows the user to detect abnormalities at the first moment, improving safety and user experience. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0018] Figure 2 This is a schematic diagram of the pressure transmission component of this utility model.

[0019] Figure 3 This is a schematic diagram of the main sectional view of the structure of this utility model.

[0020] In the figure, 1-housing, 2-pressure sensor, 3-pressure transmission component, 4-first elastic component, 5-pressure-bearing component, 6-second elastic component, 7-contact part, 8-guide post, 9-slide groove, 10-circuit board, 11-power interface, 12-signal interface, 13-alarm audio module. Detailed Implementation

[0021] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0022] Example 1: Combination Figures 1-3 It is known that a pressure triggering mechanism for braking an electric mattress includes: The housing 1 has a perforation at its top; The pressure sensing module includes a pressure sensor 2 disposed on the bottom surface of the housing 1; The pressure transmission element 3 is disposed above the pressure sensor 2, and a first elastic element 4 is provided between its lower end and the bottom surface of the housing 1. The pressure-bearing member 5 has a second elastic member 6 between its lower part and the pressure transmission member 3, and the pressure-bearing member 5 has a contact part 7 that extends upward through the opening; The pressure sensing module is used to detect the pressure transmitted by the pressure transmission component 3 and output a trigger signal when the pressure reaches a predetermined value.

[0023] A guide structure is provided between the pressure transmitting component 3 and the pressure receiving component 5. The guide structure includes a guide post 8 provided on one of them and a slide groove 9 provided on the other. The guide post 8 and the slide groove 9 are slidably engaged. The second elastic component 6 is sleeved on the guide post 8.

[0024] In this embodiment, the upper end face of the pressure transmitting component 3 is preferably provided with a guide post 8, and the lower end face of the pressure receiving component 5 is provided with a sliding groove 9.

[0025] The pressure-bearing component 5 includes a base and a contact portion 7 disposed on the base. The horizontal cross-section of the base is larger than the horizontal cross-section of the contact portion, and the size of the base is larger than the through-hole size at the top of the housing 1, thereby ensuring that the contact portion 7 can pass through the through-hole at the top of the housing 1 while the base cannot pass through. The upward movement of the pressure-bearing component 5 is limited by the contact between the base and the inner surface of the top of the housing 1.

[0026] Optionally, the horizontal cross-section of the base of the pressure member 5, the contact part 7, and the top of the housing 1 can be rectangular, circular, or other suitable shapes.

[0027] Preferably, the contact portion 7 and the through-hole at the top of the housing 1 are slidably engaged, defining the movement trajectory of the contact portion 7.

[0028] Initially, both the first elastic element 4 and the second elastic element 6 are in a pre-compressed state. This ensures that the pressure transmitting element 3 remains in an elevated position when there is no external force, and that the base of the pressure-bearing element 5 rests against the inner surface of the top of the housing 1 when there is no external force, while the contact portion 7 remains protruding from the opening of the housing 1. When an external force is applied to the contact portion 7, the first elastic element 4 will be preferentially compressed. The length change of the first elastic element 4 during this compression process (i.e., its compressed length) will not exceed the thickness of the pressure sensor 2. This ensures that pressure can be effectively transmitted to the upper detection surface of the pressure sensor 2 through the pressure transmitting element 3.

[0029] At least three first elastic elements 4 are provided, and they are arranged in a ring array around the pressure sensor 2. This provides uniform and stable elastic support for the pressure transmission element. The pressure transmission element 3 has an upper end face and a lower end face arranged in parallel, and the lower end face has a positioning groove that cooperates with the first elastic elements 4.

[0030] The distance between the lower end face of the pressure transmission element 3 and the upper detection surface of the pressure sensor 2 is less than 1 cm. Preferably, this distance is less than 0.5 cm to further shorten the pressure transmission path, reduce idle travel, enable the sensor to respond quickly after the pressure-bearing element contacts the headboard, reduce the duration of top pressure, shorten the time difference between physical contact and the generation of an electrical signal, and enable the trigger command to be issued quickly in the initial stage of rigid compression between the mattress and the headboard.

[0031] Both the first elastic element 4 and the second elastic element 6 are springs, with the stiffness of the second elastic element 6 being greater than that of the first elastic element 4. Preferably, the stiffness coefficient of the second elastic element 6 is 2-5 times that of the first elastic element 4. The greater stiffness of the second elastic element means that in the initial compression stage, the first elastic element 4, with its lower stiffness, is primarily compressed. As the pressure continues to increase, the second elastic element 6 begins to compress significantly, driving the pressure transmission element 3 to contact the sensor 2, thus allowing pressure to be applied to the pressure sensor 2.

[0032] The pressure sensing module also includes a circuit board 10 electrically connected to the pressure sensor 2. Preferably, the pressure sensor 2 is fixedly connected to the corresponding sensor interface on the circuit board 10 by means of wires or flexible circuit welding, plugging, etc.

[0033] The circuit board 10 is provided with a power interface 11 and a signal interface 12. The power interface 11 is used to connect to an external power source (such as a DC power source provided by an electric mattress control system), and the signal interface 12 is used to output the trigger signal. The housing 1 is provided with corresponding connection ports (such as a power connection port and a signal connection port). The pressure sensor 2 is electrically connected to the circuit board 10.

[0034] The circuit board 10 also integrates an alarm audio module 13, which is connected to the control circuit of the circuit board 10. When the pressure sensor 2 detects that the pressure has reached the threshold, the control circuit outputs a trigger signal and drives the alarm audio module 13 to work. A corresponding sound outlet is provided on the housing 1. This immediately alerts the user that the mattress is interfering with the headboard.

[0035] It should be noted that the signal interface 12 of the circuit board 10 of this invention is connected to the controller of the electric mattress (not shown in the figure). This controller is a conventional controller module or system in the prior art that can control the movement of the motor in the mattress. The controller only serves as a general-purpose execution unit to realize the electric adjustment function. Electrically connected to the pressure sensor 2 and the motor, it can receive trigger signals from the signal interface 12, and when the trigger signal is received, it sends a stop command to the motor push rod, cutting off its operating power (or optionally controlling the motor push rod to descend a small distance to relieve the pressure on the mattress).

[0036] The specific circuit structure, program logic, and user interface of the controller are all existing technologies well known to those skilled in the art. This utility model does not involve any improvement to the controller itself. Those skilled in the art can directly select a commercially available standard electric mattress controller or use conventional technical means to configure it according to actual functional requirements.

[0037] This invention applies to existing conventional electric mattresses. Existing electric mattresses typically have a segmented electric base frame, on which a rigid mesh support structure (such as a metal support mesh) is laid, and on top of the mesh support structure, an elastic mattress (such as a foam, memory foam, or spring mattress) is laid.

[0038] The shell 1 of this invention is preferably 2-10cm in length. During installation, it can be fixed to the front end (i.e., the end near the headboard) of the mesh support structure in the back area of ​​the electric mattress using fasteners (such as screws) via the connecting ears on both sides of the shell 1. Because the elastic mattress itself has a certain weight and deformation elasticity, its bottom will naturally conform to the surface of the mesh support structure when the mattress is laid flat, thus minimizing any noticeable bulge or discomfort caused by the installation of this mechanism at the bottom. To further ensure comfort, a suitable receiving groove can be pre-molded or cut into the bottom of the elastic mattress corresponding to the installation position of this mechanism, allowing the mechanism to be partially embedded within it, thereby further reducing any potential impact on the flatness of the mattress.

[0039] When the back area of ​​the electric mattress rises under the drive of the motor, the mechanism located at its front end also rises and approaches the headboard. If the upper surface of the back of the elastic mattress comes into contact with and presses against the headboard, the headboard will apply pressure to the protruding contact portion 7. This pressure is transmitted and sensed internally through the mechanism of this invention. When the detected pressure value reaches a preset trigger threshold, the pressure sensing module will immediately output a trigger signal. This signal is sent to the controller of the electric mattress, which then commands the motor to stop or reverse, thereby achieving automatic braking.

[0040] Optionally, the trigger threshold of pressure sensor 2 is 100N~500N, preferably 200N. This threshold can be set via a calibration element (such as a potentiometer) on circuit board 10 or via software connected to a controller. This threshold setting takes into account the load that the back area may bear when the user is using the electric mattress normally. When the back is raised, the weight of the human body is mainly concentrated on the hips, and the back area mainly plays a supporting role, with a relatively small overall force (far less than 100N). Therefore, the trigger threshold can be set relatively low (such as 200N) to provide sufficient safety margin. Even if accidental pressure causes triggering during daily use, it will only cause the motor to brake and stop the lifting, without affecting other uses besides lifting (such as lowering, zero gravity mode, etc.), and the user can manually clear the alarm and operate again.

[0041] The working principle of the pressure triggering mechanism for braking an electric mattress provided by this utility model is as follows: In use, when the backrest of the electric mattress rises and contacts the headboard, the contact portion 7 of the pressure-bearing component 5 is first compressed, pushing it downward to compress the second elastic component 6. The pressure is transmitted through the guide structure to the pressure transmission component 3, causing it to overcome the supporting force of the first elastic component 4 and move downward. When the pressure transmission component 3 touches the pressure sensor 2 and the detected value reaches a preset threshold, the pressure sensing module immediately outputs a trigger signal through the signal interface 12 of the circuit board 10. This signal can be sent to the mattress motor controller to urgently cut off the motor power or drive the motor to reverse, thereby achieving automatic braking before the mattress structure and motor are damaged due to excessive resistance. At the same time, the integrated alarm audio module 13 can emit an alarm sound to remind the user.

[0042] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A pressure triggering mechanism for braking an electric mattress, characterized in that, include: The shell (1) has a through opening at its top; The pressure sensing module includes a pressure sensor (2) disposed on the bottom surface of the housing (1). A pressure transmission element (3) is disposed above the pressure sensor (2), and a first elastic element (4) is provided between its lower end and the inner bottom surface of the housing (1). The pressure-bearing member (5) has a second elastic member (6) between its lower part and the pressure transmission member (3), and the pressure-bearing member (5) has a contact part (7) that extends upward from the through-hole; The pressure sensing module is used to detect the pressure transmitted by the pressure transmission component (3) and output a trigger signal when the pressure reaches a predetermined value.

2. The pressure triggering mechanism for braking an electric mattress according to claim 1, characterized in that: A guide structure is provided between the pressure transmitting member (3) and the pressure receiving member (5). The guide structure includes a guide post (8) on one of them and a slide groove (9) on the other. The guide post (8) and the slide groove (9) are slidably engaged. The second elastic member (6) is sleeved on the guide post (8).

3. A pressure triggering mechanism for braking an electric mattress according to claim 1 or 2, characterized in that: The first elastic element (4) has at least three members, which are arranged in a ring array around the pressure sensor (2).

4. The pressure triggering mechanism for braking an electric mattress according to claim 1, characterized in that: The pressure transmission element (3) has an upper end face and a lower end face arranged in parallel, and the lower end face is provided with a positioning groove that cooperates with the first elastic element (4).

5. A pressure triggering mechanism for braking an electric mattress according to claim 1 or 4, characterized in that: The distance between the lower end face of the pressure transmitting element (3) and the upper end detection surface of the pressure sensor (2) is less than 1 cm.

6. The pressure triggering mechanism for braking an electric mattress according to claim 3, characterized in that: Both the first elastic element (4) and the second elastic element (6) are springs, and the stiffness of the second elastic element (6) is greater than that of the first elastic element (4).

7. The pressure triggering mechanism for braking an electric mattress according to claim 1, characterized in that: The pressure sensing module also includes a circuit board (10) electrically connected to the pressure sensor (2). The circuit board (10) is provided with a power interface (11) and a signal interface (12). The housing (1) is provided with a corresponding connection port.

8. A pressure triggering mechanism for braking an electric mattress according to claim 7, characterized in that: The circuit board (10) also integrates an alarm audio module (13), and the housing (1) is provided with a corresponding sound outlet.

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