CN213716769U

CN213716769U - Double-stroke key, control panel and medical equipment

Info

Publication number: CN213716769U
Application number: CN202022773757.8U
Authority: CN
Inventors: 崔勇
Original assignee: Shanghai United Imaging Healthcare Co Ltd
Current assignee: Shanghai United Imaging Healthcare Co Ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-07-16
Anticipated expiration: 2030-11-26

Abstract

The utility model relates to a double-stroke button, including pressing key cap, silica gel button and circuit board. The silica gel button comprises a supporting part and a triggering part, the triggering part is arranged on the supporting part, and the triggering part is connected with the supporting part through an elastic wall. The circuit board comprises a light touch switch and a key switch, the key switch is triggered in the process of pressing the first stroke of the trigger part by the key cap, and the light touch switch is triggered in the process of continuously pressing the second stroke of the trigger part by the key cap. The utility model discloses still provide control panel and medical equipment including above-mentioned double stroke button. Above-mentioned double stroke button, control panel and medical equipment to the silica gel button of silica gel material provides the double stroke function that the elastic force realized the button, has small, simple structure's advantage. Meanwhile, the elastic wall in the silica gel key can provide more stable stroke and elastic difference, so that more consistent double-stroke operation hand feeling is obtained, and the user experience is improved.

Description

Double-stroke key, control panel and medical equipment

Technical Field

The utility model relates to a circuit switch technical field especially relates to double-stroke button, control panel and medical equipment.

Background

Modern medical equipment is generally provided with a control panel, and medical personnel can control the medical equipment through various keys on the control panel. The traditional keys only have one stroke and can only generate a single digital control signal or analog control signal, on one hand, the single-stroke keys are easily triggered by misoperation to cause medical accidents, and on the other hand, the single-stroke keys only have a single switch function and cannot realize one-key multi-use. The double-stroke key can solve the problems, but most of the double-stroke keys in the control panel of the current medical equipment use springs to provide stroke and elasticity difference values so as to realize the use experience of users with the double-stroke function of the keys. The design is complex, the requirements on the key structure, the space size and the like are high, and the structure cannot be used in keys with small sizes; meanwhile, the problems of inconsistent hand feeling and abnormal operation sound caused by spring difference and related structure size tolerance easily occur, and the use experience of a user is influenced.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a dual-stroke key, a control panel and a medical device, which have a simple structure, a small size and a high user experience, in order to solve the problems of a general dual-stroke key, such as a complicated structure, a large size and a poor user operation experience.

A dual stroke key comprising:

a key cap;

the silica gel key comprises a supporting part and a triggering part, wherein the triggering part is arranged on the supporting part, and the triggering part is connected with the supporting part through an elastic wall;

the circuit board comprises a light touch switch and a key switch, the key switch is triggered in the process that the key cap presses a first stroke of the trigger part, and the light touch switch is triggered in the process that the key cap continuously presses a second stroke of the trigger part.

In one embodiment, the outer periphery of the trigger part is connected with the support part through a first elastic wall, one side of the trigger part is provided with a key contact and a light touch salient point, and the key contact is connected with the first elastic wall through a second elastic wall; the circuit board further comprises a board body, one side of the board body is in contact with the supporting portion, the touch switch and the key switch are arranged on one side of the board body in contact with the supporting portion, the position of the key switch and the position of the touch switch correspond to the key contact and the touch salient point respectively, the key cap presses the first stroke process of the triggering portion, the key contact contacts and triggers the key switch, and the key cap presses the second stroke process of the triggering portion, the touch salient point contacts and triggers the touch switch.

In one embodiment, the supporting part is a hollow structure, and the outer periphery of the trigger part is connected with the edge of the hollow part on the supporting part through the first elastic wall; the side, facing the supporting part, of the triggering part is provided with a key contact and a light touch salient point, one side, facing away from the supporting part, of the triggering part is provided with an end part groove, the position of the end part groove corresponds to the key contact, the diameter of the end part groove is larger than that of the key contact, and a second elastic wall is formed between the side wall of the end part groove and the key contact.

In one embodiment, at least two key contacts are arranged on one side, facing the supporting part, of the triggering part, at least two end grooves are formed in one side, facing away from the supporting part, of the triggering part, and the at least two end grooves correspond to the at least two key contacts one to one.

In one embodiment, at least two of the key contacts are respectively equal to the distances between the light touch salient points.

In one embodiment, the plate body is flat, and the height of the key contact is greater than that of the light touch salient point.

In one embodiment, the double-stroke key further comprises a key guide block and a panel bracket, the panel bracket is of a hollow structure, and the key guide block is slidably arranged in the panel bracket; the key cap cover is arranged at one end of the key guide block, the other end of the key guide block faces the trigger part on the silica gel key, and the key cap is pressed by the key guide block on the silica gel key to form the trigger part.

In one embodiment, the key guide block and the panel bracket are in sliding fit in a way of matching a guide groove and a guide pillar; the outer side wall of the key guide block is provided with a plurality of guide grooves along the sliding direction, and the inner side wall of the panel bracket is provided with a plurality of guide columns; or the outer side wall of the key guide block is provided with a plurality of guide posts along the sliding direction, and the inner side wall of the panel bracket is provided with a plurality of guide grooves; the guide grooves are respectively matched with the guide columns.

In one embodiment, a limiting structure is arranged between the outer side wall of the key guide block and the inner side wall of the panel bracket, and the limiting structure is a limiting bulge, a limiting step or a limiting inclined surface.

A control panel comprises a control circuit and a double-stroke key, wherein the double-stroke key is connected in series with the control circuit; the double-stroke key comprises a key cap, a silica gel key and a circuit board; the silica gel key comprises a supporting part and a triggering part, the triggering part is arranged on the supporting part, and the triggering part is connected with the supporting part through an elastic wall; the circuit board comprises a light touch switch and a key switch, the key switch is triggered in the process of pressing the first stroke of the trigger part by the key cap, and the light touch switch is triggered in the process of continuously pressing the second stroke of the trigger part by the key cap.

A medical device comprises a device body and a control panel, wherein the control panel is arranged on the device body and is used for controlling the device body to execute corresponding actions; the control panel comprises a control circuit and a double-stroke key, and the double-stroke key is connected in series with the control circuit; the double-stroke key comprises a key cap, a silica gel key and a circuit board; the silica gel key comprises a supporting part and a triggering part, the triggering part is arranged on the supporting part, and the triggering part is connected with the supporting part through an elastic wall; the circuit board comprises a light touch switch and a key switch, the key switch is triggered in the process of pressing the first stroke of the trigger part by the key cap, and the light touch switch is triggered in the process of continuously pressing the second stroke of the trigger part by the key cap.

Above-mentioned double stroke button, control panel and medical equipment to the silica gel button of silica gel material provides the double stroke function that the elastic force realized the button, has small, simple structure's advantage. Meanwhile, the elastic wall in the silica gel key can provide more stable stroke and elastic difference, so that more consistent double-stroke operation hand feeling is obtained, and the user experience is improved.

Drawings

Fig. 1 is a schematic view of an overall structure of a dual-stroke key according to an embodiment of the present invention;

fig. 2 is a schematic view of an explosion structure of a dual-stroke key according to an embodiment of the present invention;

fig. 3 is a schematic side view of a silica gel key according to an embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of a silica gel key according to an embodiment of the present invention;

fig. 5 is a schematic view illustrating a non-pressed state of a dual-stroke key according to an embodiment of the present invention;

fig. 6 is a schematic view illustrating a double-stroke key being pressed to a first stroke according to an embodiment of the present invention;

fig. 7 is a schematic diagram illustrating a double-stroke key press to a second stroke according to an embodiment of the present invention.

Wherein: 100. a double-stroke key; 101. a key cap; 102. a key guide block; 1021. a guide groove; 103. a panel bracket; 1031. a guide post; 104. a silica gel key; 104a, a support portion; 104b, a trigger part; 1041. a key contact; 1042. lightly touching the salient points; 1043. fixing a column; 1044. a first elastic wall; 1045. an end portion groove; 1046. a second elastic wall; 105. a circuit board; 1051. a tact switch; 1052. a key switch; 1053. and (7) positioning the holes.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The utility model provides a double-stroke button 100 can trigger corresponding control circuit disconnection or closure at every stroke, perhaps only triggers corresponding control circuit disconnection or closure at the second stroke. 1-4, the dual stroke key 100 includes a key cap 101, a silicone key 104, and a circuit board 105. The silicone key 104 includes a supporting portion 104a and a triggering portion 104b, the triggering portion 104b is disposed on the supporting portion 104a, and the triggering portion 104b is connected to the supporting portion 104a through an elastic wall. Circuit board 105 includes tact switch 1051 and key switch 1052, and key switch 1052 is activated during a first stroke in which key cap 101 presses trigger 104b, and tact switch 1051 is activated during a second stroke in which key cap 101 continues to press trigger 104 b. In the dual-stroke key 100 of the present embodiment, the silicone key 104 made of silicone material provides elastic force to implement the dual-stroke function of the key, and has the advantages of small volume and simple structure. Meanwhile, the elastic wall in the silica gel key can provide more stable stroke and elastic difference, so that more consistent double-stroke operation hand feeling is obtained, and the user experience is improved. The pressing process of the first stroke is to trigger the key switch 1052, the pressing process of the second stroke is performed based on the first stroke, and the pressing process of the second stroke is to trigger the tact switch 1051.

In an embodiment of the present invention, as shown in fig. 1-4, the dual stroke button 100 includes a button cap 101, a silicone button 104, and a circuit board 105. The key cap 101 is for the operator to press. The function of the silicone key 104 is to elastically deform at a corresponding stage according to the stroke length under a pressing condition. The silicone key 104 includes a supporting portion 104a and a triggering portion 104b, the triggering portion 104b is disposed on the supporting portion 104a, an outer periphery of the triggering portion 104b is connected to the supporting portion 104a through a first elastic wall 1044, one side of the triggering portion 104b has a key contact 1041 and a light touch bump 1042, and the key contact 1041 is connected to the first elastic wall 1044 through a second elastic wall 1046. The thinner portions of the first elastic wall 1044 and the second elastic wall 1046 of the silicone key 104 can elastically deform to a greater degree preferentially than other portions of the silicone key 104 when bearing pressure.

The circuit board 105 includes a board body, a tact switch 1051 and a key switch 1052, one side of the board body contacts with the supporting portion 104a, the tact switch 1051 and the key switch 1052 are disposed on one side of the board body contacting with the supporting portion 104a, a position of the key switch 1052 and a position of the tact switch 1051 respectively correspond to the key contact 1041 and the tact bump 1042, as shown in fig. 5-7, during a first stroke of the key cap 101 pressing the triggering portion 104b, the first elastic wall 1044 elastically deforms, so that the key contact 1041 contacts and triggers the key switch 1052, and during a second stroke of the key cap 101 pressing the triggering portion 104b, the second elastic wall 1046 elastically deforms, so that the tact bump 1042 contacts and triggers the tact switch 1051. In the dual-stroke key 100, the silicone key 104 made of silicone material provides elastic force to realize the dual-stroke function of the key, and has the advantages of small volume and simple structure. Meanwhile, the first elastic wall 1044 and the second elastic wall 1046 in the silicone key 104 can provide more stable stroke and elastic difference, so that more consistent double-stroke operation hand feeling is obtained, and user experience is improved.

It will be appreciated that during depression of keycap 101, key contact 1041 makes contact with key switch 1052 first, and then tactile bump 1042 makes contact with tactile switch 1051. 1-4, the plate body is flat, and the height of the key contact 1041 is greater than the height of the tactile bump 1042, thereby allowing the key contact 1041 to contact the key switch 1052 first, and then the tactile bump 1042 contacts the tactile switch 1051. As another way to realize this, the heights of the key contact 1041 and the light touch bump 1042 are the same, a protrusion is disposed on the board body, and the key switch 1052 is disposed on the higher protrusion, and it is also possible to realize the contact between the key contact 1041 and the key switch 1052, and then the contact between the light touch bump 1042 and the light touch switch 1051. Continuing this kind of thinking, can also set up the arch that the height is different in order to realize the order of above-mentioned successive contact on the plate body, no longer describe here.

In the silicone key 104, a first elastic wall 1044 is formed between the supporting portion 104a and the triggering portion 104 b. As one way to realize this, as shown in fig. 3-4, the supporting portion 104a is hollow, and the outer periphery of the triggering portion 104b is connected to the edge of the hollow portion of the supporting portion 104a through the first elastic wall 1044. The side of the trigger portion 104b facing the supporting portion 104a is provided with a key contact 1041 and a light touch bump 1042, the side of the trigger portion 104b facing away from the supporting portion 104a is provided with an end recess 1045, the position of the end recess 1045 corresponds to the key contact 1041, the diameter of the end recess 1045 is larger than the diameter of the key contact 1041, and a second elastic wall 1046 is formed between the side wall of the end recess 1045 and the key contact 1041.

In an embodiment of the present invention, as shown in fig. 1 to 4, one side of the triggering portion 104b facing the supporting portion 104a has at least two key contacts 1041, one side of the triggering portion 104b facing away from the supporting portion 104a is provided with at least two end recesses 1045, and the at least two end recesses 1045 are in one-to-one correspondence with the at least two key contacts 1041. Two or more key contacts 1041 can form a plurality of support points after the first stroke is finished, thereby increasing the motion stability of the silicone key 104 during the second stroke. Further, the distances between at least two key contacts 1041 and the light touch bump 1042 are equal, which further increases the motion stability of the silicone key 104 during the second stroke. In an implementation manner, the number of the key contacts 1041 is two, and the light touch bump 1042 is located at a middle position of a connection line of the two key contacts 1041. As another realizable way, the number of the key contacts 1041 is three or four, and the three or four key contacts 1041 are equally spaced apart with the light touch bump 1042 as the center.

In an embodiment of the present invention, as shown in fig. 1-4, the dual-stroke button 100 further includes a button guide block 102 and a panel bracket 103, the panel bracket 103 is a hollow structure, and the button guide block 102 is slidably disposed in the panel bracket 103. The key cap 101 covers one end of the key guide block 102, the other end of the key guide block 102 faces the trigger part 104b of the silicone key 104, and the key cap 101 presses the trigger part 104b of the silicone key 104 through the key guide block 102. The panel support 103 can increase the motion stability of the key guide block 102, and further provides a foundation for stable pressing of the silicone key 104, and prevents an operator from directly pressing the silicone key 104 through the key cap 101 to cause deviation. As an implementation manner, the sliding fit between the key guide block 102 and the panel bracket 103 is realized by the way of the guide groove 1021 and the guide post 1031. Optionally, a plurality of guide grooves 1021 are formed in the outer side wall of the key guide block 102 along the sliding direction, and a plurality of guide posts 1031 are arranged on the inner side wall of the panel bracket 103; or a plurality of guide posts 1031 are arranged on the outer side wall of the key guide block 102 along the sliding direction, and a plurality of guide grooves 1021 are arranged on the inner side wall of the panel bracket 103. As long as the plurality of guide grooves 1021 are ensured to be respectively matched with the plurality of guide posts 1031, stable sliding between the key guide block 102 and the panel holder 103 can be achieved.

In an embodiment of the present invention, as shown in fig. 1-4, a limiting structure is disposed between the outer sidewall of the key guide block 102 and the inner sidewall of the panel support 103, the limiting structure can limit the limit deformation degree of the silicone key 104, so as to avoid the operator from excessively pressing the silicone key 104 by pressing the key cap 101, thereby effectively protecting the silicone key 104 from being repeatedly pressed by two strokes. Optionally, the limiting structure is a limiting protrusion, a limiting step or a limiting inclined surface. The utility model discloses an embodiment chooses for use the limit structure of step face form. Furthermore, a positioning hole 1053 is formed in the circuit board 105, a fixing column 1043 is arranged on one side, contacting the circuit board 105, of the silica gel key 104, the fixing column 1043 is matched with the positioning hole 1053, and rapid and accurate assembly between the silica gel key 104 and the circuit board 105 can be achieved. Optionally, the number of the positioning holes 1053 and the fixing posts 1043 is four, respectively, and the positioning holes 1053 and the fixing posts 1043 are distributed at four vertex angles of the rectangle.

During the current operation using the two-stroke key 100, as shown in fig. 1-4, the key cap 101 is assembled with the key guide block 102, and applies and transmits an operation force to the silicone key 104 along the guide posts 1031 on the panel bracket 103 through the guide grooves 1021; when the operating force is greater than the first elastic wall 1044 of the silicone rubber key 104, as shown in fig. 5 to 7, the deformed portion of the silicone rubber key 104 moves downward, so that the key contact 1041 contacts the key switch 1052 on the circuit board 105 and triggers the key, at this time, the first stroke key function is completed, and the key hand feeling is provided and ensured by the first elastic wall 1044 of the silicone rubber key 104.

As shown in fig. 5-7, when the first stroke key function is triggered and then continues to apply an operating force to the silicone rubber key 104, the key cap 101 and the key guide block 102 drive the deformed portion of the silicone rubber key 104 to continue to move downward, and since the first stroke is triggered, the key contact 1041 has already contacted the circuit board 105, and at this time, the end recess 1045 on the silicone rubber key 104 and the second elastic wall 1046 on the silicone rubber key 104 provide a second stroke deformation space and a reverse supporting force. When the reverse supporting force of the first elastic wall 1044 on the silicone key 104 and the second elastic wall 1046 on the silicone key 104 is overcome and the reverse supporting force continues to move until the touch bump 1042 triggers the touch switch 1051 on the circuit board 105, the second stroke key function is completed, and the key hand feeling is provided and ensured by the first elastic wall 1044 of the silicone key 104, the second elastic wall 1046 of the silicone key 104 and the touch switch 1051. It should be noted that the upper end recess 1045 and the second elastic wall 1046 of the silicone key 104 need to be designed with a certain structural shape and size to ensure that the deformation space and the reverse supporting force provided by the silicone key are enough to complete the function of triggering the tact switch 1051.

The utility model also provides a control panel, which comprises a control circuit and a double-stroke button 100, wherein the double-stroke button 100 is connected in series with the control circuit; the double-stroke key 100 comprises a key cap 101, a silica gel key 104 and a circuit board 105; the silicone key 104 includes a supporting portion 104a and a triggering portion 104b, the triggering portion 104b is disposed on the supporting portion 104a, an outer periphery of the triggering portion 104b is connected to the supporting portion 104a through a first elastic wall 1044, one side of the triggering portion 104b has a key contact 1041 and a light touch bump 1042, and the key contact 1041 is connected to the first elastic wall 1044 through a second elastic wall 1046; the circuit board 105 includes a board body, a tact switch 1051 and a key switch 1052, one side of the board body contacts with the supporting portion 104a, the tact switch 1051 and the key switch 1052 are disposed on one side of the board body contacting with the supporting portion 104a, a position of the key switch 1052 and a position of the tact switch 1051 respectively correspond to the key contact 1041 and the tact bump 1042, the tact bump 1042 contacts with the tact switch 1051 during a first stroke of the key cap 101 pressing the triggering portion 104b, and during a second stroke of the key cap 101 pressing the triggering portion 104 b.

Correspondingly, the utility model also provides a medical device, which comprises a device body and a control panel, wherein the control panel is arranged on the device body and is used for controlling the device body to execute corresponding actions; the control panel comprises a control circuit and a double-stroke key 100, wherein the double-stroke key 100 is connected in series with the control circuit; the double-stroke key 100 comprises a key cap 101, a silica gel key 104 and a circuit board 105; the silicone key 104 includes a supporting portion 104a and a triggering portion 104b, the triggering portion 104b is disposed on the supporting portion 104a, an outer periphery of the triggering portion 104b is connected to the supporting portion 104a through a first elastic wall 1044, one side of the triggering portion 104b has a key contact 1041 and a light touch bump 1042, and the key contact 1041 is connected to the first elastic wall 1044 through a second elastic wall 1046; the circuit board 105 includes a board body, a tact switch 1051 and a key switch 1052, one side of the board body contacts with the supporting portion 104a, the tact switch 1051 and the key switch 1052 are disposed on one side of the board body contacting with the supporting portion 104a, a position of the key switch 1052 and a position of the tact switch 1051 respectively correspond to the key contact 1041 and the tact bump 1042, the tact bump 1042 contacts with the tact switch 1051 during a first stroke of the key cap 101 pressing the triggering portion 104b, and during a second stroke of the key cap 101 pressing the triggering portion 104 b.

Above-mentioned control panel and medical equipment to the silica gel button 104 of silica gel material provides the elastic force and realizes the double-stroke function of button, has small, simple structure's advantage. Meanwhile, the first elastic wall 1044 and the second elastic wall 1046 in the silicone key 104 can provide more stable stroke and elastic difference, so that more consistent double-stroke operation hand feeling is obtained, and user experience is improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A dual stroke key, comprising:

a key cap;

2. The double-stroke key according to claim 1, wherein the outer periphery of the trigger part is connected with the support part through a first elastic wall, one side of the trigger part is provided with a key contact and a light touch salient point, and the key contact is connected with the first elastic wall through a second elastic wall; the circuit board further comprises a board body, one side of the board body is in contact with the supporting portion, the touch switch and the key switch are arranged on one side of the board body in contact with the supporting portion, the position of the key switch and the position of the touch switch correspond to the key contact and the touch salient point respectively, the key cap presses the first stroke process of the triggering portion, the key contact contacts and triggers the key switch, and the key cap presses the second stroke process of the triggering portion, the touch salient point contacts and triggers the touch switch.

3. The double-stroke button of claim 2, wherein the supporting portion is hollow, and the outer periphery of the triggering portion is connected to the edge of the hollow portion of the supporting portion through the first elastic wall; the side, facing the supporting part, of the triggering part is provided with a key contact and a light touch salient point, one side, facing away from the supporting part, of the triggering part is provided with an end part groove, the position of the end part groove corresponds to the key contact, the diameter of the end part groove is larger than that of the key contact, and a second elastic wall is formed between the side wall of the end part groove and the key contact.

4. The dual stroke key of claim 3 wherein the side of the trigger portion facing the support portion has at least two of the key contacts, and the side of the trigger portion facing away from the support portion has at least two end recesses, the at least two end recesses corresponding one-to-one with the at least two key contacts.

5. The dual stroke key of claim 4 wherein at least two of the key contacts are each equidistant from the tactile bump.

6. The dual stroke key of claim 2 wherein the plate is flat and the height of the key contacts is greater than the height of the tactile bumps.

7. The dual stroke button of any one of claims 1 through 6, further comprising a button guide block and a panel holder, wherein the panel holder is hollow, and the button guide block is slidably disposed in the panel holder; the key cap cover is arranged at one end of the key guide block, the other end of the key guide block faces the trigger part on the silica gel key, and the key cap is pressed by the key guide block on the silica gel key to form the trigger part.

8. The dual stroke key of claim 7 wherein the key guide block and the panel bracket are slidably engaged by means of a guide slot and a guide post; the outer side wall of the key guide block is provided with a plurality of guide grooves along the sliding direction, and the inner side wall of the panel bracket is provided with a plurality of guide columns; or the outer side wall of the key guide block is provided with a plurality of guide posts along the sliding direction, and the inner side wall of the panel bracket is provided with a plurality of guide grooves; the guide grooves are respectively matched with the guide columns.

9. The dual stroke button of claim 7, wherein a position-limiting structure is disposed between an outer sidewall of the button guide block and an inner sidewall of the panel bracket, and the position-limiting structure is a position-limiting protrusion, a position-limiting step or a position-limiting inclined surface.

10. A control panel is characterized by comprising a control circuit and a double-stroke key, wherein the double-stroke key is connected in series with the control circuit; the double-stroke key comprises a key cap, a silica gel key and a circuit board; the silica gel key comprises a supporting part and a triggering part, the triggering part is arranged on the supporting part, and the triggering part is connected with the supporting part through an elastic wall; the circuit board comprises a light touch switch and a key switch, the key switch is triggered in the process of pressing the first stroke of the trigger part by the key cap, and the light touch switch is triggered in the process of continuously pressing the second stroke of the trigger part by the key cap.

11. The medical equipment is characterized by comprising an equipment body and a control panel, wherein the control panel is arranged on the equipment body and is used for controlling the equipment body to execute corresponding actions; the control panel comprises a control circuit and a double-stroke key, and the double-stroke key is connected in series with the control circuit; the double-stroke key comprises a key cap, a silica gel key and a circuit board; the silica gel key comprises a supporting part and a triggering part, the triggering part is arranged on the supporting part, and the triggering part is connected with the supporting part through an elastic wall; the circuit board comprises a light touch switch and a key switch, the key switch is triggered in the process of pressing the first stroke of the trigger part by the key cap, and the light touch switch is triggered in the process of continuously pressing the second stroke of the trigger part by the key cap.