Key structure and medical tower crane or suspension bridge

Abstract

The utility model provides a button structure and a medical tower crane or bridge, the button structure comprises at least two switch units arranged along one direction, the switch unit at the outermost layer is closed and conducted through pressing or light touch, and the switch units except the switch units at the outermost layer are closed and conducted through pressing; when the outermost switch unit is pressed in one direction, the switch units from the outer side are pressed to move towards the innermost switch unit, so that the switch units are closed and conducted through pressing. Each switch unit is used for being electrically connected into a control loop of a control system of the medical crane tower or the suspension bridge, and when the switch units are switched on at the same time, the control loop is triggered. When the multiple layers of switch units of the key structure are connected at the same time, the medical tower crane or the suspension bridge can execute the corresponding instruction, the probability that the key of the medical tower crane or the suspension bridge is mistakenly touched to execute the wrong instruction is reduced, and the reliability of the key structure of the medical tower crane or the suspension bridge is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a key structure and a medical hanging tower or hanging bridge. Background Art

[0002] Medical pendants and suspension bridges are equipment used in hospitals to suspend mobile medical equipment. Among them, medical suspension bridges are a type of suspension equipment fixed to the ceiling, usually composed of several interconnected bridges and brackets, which can move along the track so that medical staff can adjust the position of the load equipment; medical pendants are lifting units fixed to the bottom or wall, which can lift and move larger medical equipment.

[0003] In the related art, the working status of the medical pendant and the suspension bridge is controlled by buttons. However, the current button structure of the medical pendant and the suspension bridge is single. If a single circuit failure or false triggering occurs in the button, the medical pendant or the suspension bridge may change its working status and its moving direction may be uncontrollable, causing interference to the operation or harm to patients and medical staff. Utility Model Content

[0004] The technical purpose of the utility model is to provide a key structure and a medical pendant or suspension bridge, aiming to solve the problem that the key structure on the current medical pendant and suspension bridge is prone to misoperation and easily causes equipment failure.

[0005] In order to solve the above technical problems, the utility model is implemented as follows: a key structure includes at least two switch units arranged along a direction, the switch unit on the outermost layer is closed and turned on by pressing or lightly touching, and each switch unit except the outermost one is closed and turned on by pressing;

[0006] When the outermost switch unit is pressed in one direction, the switch units on the outer side are pressed and move toward the innermost switch unit, so that the switch units are closed and turned on by pressing;

[0007] Each of the switch units is used to be electrically connected to a control loop of a control system of a medical pendant or a suspension bridge, and when each of the switch units is closed and turned on at the same time, the control loop is triggered.

[0008] Furthermore, the switch units are stacked along one direction.

[0009] Furthermore, the switch units in the outermost layer are membrane switches, and at least one switch unit in the inner layer is a non-membrane touch switch.

[0010] Furthermore, the pressing force required for each of the switch units in the inner layer is greater than the pressing force required for the switch units in the outermost layer.

[0011] Furthermore, the pressing stroke of the switch units in the outermost layer is greater than the pressing stroke of each switch unit in the inner layer.

[0012] Furthermore, the thickness of the switch unit in the outer layer is smaller than the thickness of the switch unit in the inner layer.

[0013] Furthermore, the membrane switch is any one of a pot-type membrane switch, a capacitive membrane switch or a resistive membrane switch.

[0014] Furthermore, the switch unit in the outermost layer is a flexible touch switch, and at least one switch unit in the inner layer is a non-membrane touch switch.

[0015] Furthermore, the key structure has a first switch and a second switch stacked from outside to inside.

[0016] The utility model also provides a medical hanging tower or hanging bridge, comprising the key structure as described above.

[0017] Compared with the prior art, the key structure and the medical pendant or suspension bridge in the utility model have the following beneficial effects:

[0018] A control loop of the control system of the medical pendant or suspension bridge controls the medical pendant or suspension bridge to execute corresponding instructions. Therefore, in the utility model, the medical pendant or suspension bridge can only execute the corresponding instructions when the multi-layer switch units of the key structure are connected at the same time. When a single switch unit fails and is mistakenly connected, the control unit will not execute the corresponding instructions. This arrangement reduces the probability of executing erroneous instructions due to accidental touching of the medical pendant or suspension bridge button, reduces the risk of single failure of the key switch circuit, and improves the reliability of the key structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a block diagram of each module of the medical pendant or suspension bridge in the embodiment of the utility model;

[0020] Figure 2 It is a schematic structural diagram of the key structure in the embodiment of the utility model.

[0021] In the accompanying drawings, each reference numeral represents: 1. medical pendant or suspension bridge; 10. key structure; 11. first switch; 12. second switch; 20. control system. DETAILED DESCRIPTION

[0022] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] Example:

[0026] like Figure 1~2 As shown, in this embodiment, a key structure 10 includes at least two switch units arranged along a direction, the outermost switch unit is closed and turned on by pressing or lightly touching, and each switch unit except the outermost switch unit is closed and turned on by pressing;

[0027] When the outermost switch unit is pressed in one direction, the switch units from the outer side are pressed and move toward the innermost switch unit, so that the switch units are closed and turned on by pressing;

[0028] Each switch unit is used to be electrically connected to a control loop of a control system 20 of the medical pendant or suspension bridge 1, and when each switch unit is closed and turned on at the same time, the control loop is triggered.

[0029] It should be understood that each switch unit is a push-type or touch-type switch. The switch unit can be selected from a variety of switches that can be pressed or touched in one direction to connect, such as a push button switch, a mechanical touch switch or a membrane switch, etc. The outermost switch unit can also be a touch switch that can be deformed, flexible, and connected by touch. As long as the user applies force to the button structure 10 in one direction, each switch unit can transmit pressure in turn so that the circuits of each switch unit are connected.

[0030] The switch units can be arranged at a fixed distance or in a stacked manner. After the switch units in the outermost layer are subjected to force in one direction, they approach and contact the switch units in the next layer, and transmit the force to the switch units in the next layer, so that the circuit contacts on each switch unit are closed, and each switch unit is turned on.

[0031] The switch units may also be connected via a linkage, which is used to transmit force in one direction so that each switch unit is subjected to pressure and circuit contacts are closed, thereby achieving conduction.

[0032] It can be understood that a control loop of the control system 20 of the medical pendant or suspension bridge 1 controls the medical pendant or suspension bridge to execute a specific instruction. The medical pendant or suspension bridge 1 can only execute the corresponding instruction when the multi-layer switch units of the key structure 10 are connected at the same time. When a single switch unit fails and is mistakenly connected, the control unit will not execute the corresponding instruction, which reduces the probability of executing the wrong instruction due to accidentally touching the key of the medical pendant or suspension bridge 1, reduces the risk of a single failure of the key circuit, and improves the reliability of the key structure 10. In addition, the setting of the multi-layer switch unit increases the pressing stroke of the key structure 10 and the pressing force required to connect the circuit, and can also avoid accidentally touching the key to send an instruction.

[0033] Furthermore, the switch units are stacked along one direction.

[0034] like Figure 2 As shown, Figure 2 1 is a simplified structural diagram of a key structure 10 in an embodiment. With such a configuration, pressing the key structure 10 can quickly realize the closing and conducting of the switch unit.

[0035] Furthermore, the switch unit in the outermost layer is a membrane switch, and at least one switch unit in the inner layer is a non-membrane touch switch.

[0036] A touch switch is also called a push button switch. When in use, pressure is applied in one direction to close the switch function. When the pressure is removed, the switch is disconnected. Most of its internal structure is connected and disconnected through the change in force of the metal spring.

[0037] A membrane switch is a touch switch with circuits. Its structure usually includes a membrane panel, an upper circuit, an isolation layer, and a lower circuit stacked from top to bottom. When the upper membrane panel is stressed, the contacts in the upper circuit deform toward the contacts of the lower circuit and come into contact with the contacts of the lower circuit. When the pressure is removed, the contacts of the upper circuit rebound, and the upper and lower circuits are disconnected, generating a signal. The thickness of a membrane switch is usually less than 5mm, which is relatively smaller than a non-membrane touch switch.

[0038] In this embodiment, the membrane switch has a smaller pressing stroke and pressing force, a thinner thickness, and better waterproof performance. It is used as the outermost switch unit. At least one non-membrane touch switch increases the overall pressing stroke and pressing force of the key structure 10 to prevent the medical pendant or suspension bridge 1 from changing its working state due to accidental touching of the key structure 10 when there is only a single switch unit, and to prevent the medical pendant or suspension bridge 1 from executing erroneous instructions after a single membrane switch or touch switch fails.

[0039] Furthermore, if Figure 1 As shown, the pressing force required for each switch unit in the inner layer is greater than the pressing force required for the switch unit in the outermost layer; the pressing stroke of the switch unit in the outermost layer is greater than the pressing stroke of each switch unit in the inner layer.

[0040] Such a configuration enables the key structure 10 to have segmented resistance. On the one hand, it can prompt the closing and conducting of each switch unit through the resistance and stroke changes when the user presses the key structure 10 , and on the other hand, it also improves the pressing feel of the key structure 10 .

[0041] Furthermore, if Figure 1 As shown, the thickness of the outer switch unit is less than that of the inner switch unit, so that the key structure 10 is thinner and lighter, and can be better applied to the medical pendant or suspension bridge 1.

[0042] Furthermore, if Figure 1 As shown, the switch unit in the outermost layer is a flexible touch switch, and at least one switch unit in the inner layer is a non-membrane touch switch.

[0043] A touch switch is an electronic switch that uses touch operation to control the on and off of a circuit. It usually uses the static electricity or capacitance changes of the human body to control the switch. The outer layer uses a flexible touch switch that can also transmit pressure to the inner switch unit.

[0044] Furthermore, the key structure 10 has a first switch 11 and a second switch 12 which are stacked from the outside to the inside.

[0045] In some embodiments, the first switch 11 may be a membrane switch or a flexible touch switch, and the second switch 12 may be a non-membrane touch switch. Figure 1 and 2 As shown, the key structure 10 is stacked from outside to inside with two switch units, namely, a first switch 11 and a second switch 12. The first switch 11 is a membrane switch, and the contact A1 in the upper circuit and the contact A2 in the lower circuit at both ends of the first switch 11 are electrically connected to the control system 20. When pressed or touched, the upper circuit and the lower circuit are closed and connected.

[0046] The second switch 12 is a non-membrane touch switch. The terminals B1 and B2 at the base of the second switch 12 are electrically connected to the control system 20. After the first switch 11 is pressed or touched and deformed, the bottom of the first switch 11 presses the button on the top of the second switch 12. The button of the second switch 12 has a spring. The spring moves a certain distance toward the terminals B1 and B2 until it contacts the terminals B1 and B2, so that the circuit is closed and turned on.

[0047] like Figure 1 As shown, the utility model also provides a medical pendant or suspension bridge 1, comprising the above-mentioned key structure 10. This medical pendant or suspension bridge 1 will not execute instructions incorrectly when a single switch unit fails, greatly improving the reliability of the medical pendant or suspension bridge 1.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A key structure, characterized in that: It comprises at least two switch units arranged along one direction, the switch unit on the outermost layer is closed and turned on by pressing or lightly touching, and each switch unit except the outermost layer is closed and turned on by pressing; When the outermost switch unit is pressed in one direction, the switch units on the outer side are pressed and move toward the innermost switch unit, so that the switch units are closed and turned on by pressing; Each of the switch units is used to be electrically connected to a control loop of a control system of a medical pendant or a suspension bridge, and when each of the switch units is closed and turned on at the same time, the control loop is triggered.

2. The key structure according to claim 1, characterized in that: The switch units are stacked along one direction.

3. The key structure according to claim 2, characterized in that: The switch units in the outermost layer are membrane switches, and at least one switch unit in the inner layer is a non-membrane touch switch.

4. The key structure according to claim 3, characterized in that: The pressing force required for each of the switch units in the inner layer is greater than the pressing force required for the switch units in the outermost layer.

5. The key structure according to claim 3, characterized in that: The pressing stroke of the switch units in the outermost layer is greater than the pressing stroke of each switch unit in the inner layer.

6. The key structure according to claim 3, characterized in that: The thickness of the switch unit in the outer layer is smaller than the thickness of the switch unit in the inner layer.

7. The key structure according to claim 3, characterized in that: The membrane switch is any one of a pot-type membrane switch, a capacitive membrane switch or a resistive membrane switch.

8. The key structure according to claim 2, characterized in that: The switch units in the outermost layer are flexible touch switches, and at least one switch unit in the inner layer is a non-membrane touch switch.

9. The key structure according to any one of claims 3 to 8, characterized in that: The key structure comprises a first switch and a second switch which are stacked from outside to inside.

10. A medical hanging tower or hanging bridge, characterized in that: Comprising a key structure as described in any one of claims 1-9.

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