Breathing equipment host and breathing equipment

Abstract

The utility model relates to the field of breathing equipment, in particular to a breathing equipment host and breathing equipment. The breathing equipment main machine comprises a main machine shell; the limiting component is movably arranged on the host shell in the first direction and is provided with a reset position and an unlocking position; the balance rod is arranged between the main machine shell and the limiting component, and the balance rod comprises a rotating shaft part and a swing rod part; the rotating shaft part is rotationally assembled on the rotating shaft fulcrum, the rotating axis is parallel to the length direction, the two axial ends of the rotating shaft part are connected with the swing rod parts, and the swing rod parts are located on the same side of the rotating shaft part. Rod body adapting cavities are formed in the two sides of the limiting component in the length direction, and a first limiting wall and a second limiting wall of each rod body adapting cavity are used for applying acting force to the swing rod part in the first direction, so that the two sides of the limiting component in the length direction basically synchronously move. The humidifying module mainly solves the technical problem that clamping stagnation is prone to occurring when the limiting component of the humidifying module presses the edge position in the length direction.

Description

Technical Field

[0001] The utility model relates to the field of respiratory equipment, in particular to a main body of a respiratory equipment and a respiratory equipment. Background Art

[0002] Respiratory equipment is an important equipment in the medical field and can support, assist or replace the respiratory function of patients. For example, a nasal high-flow oxygen therapy device provides a new type of respiratory support technology, which mainly includes a heating and humidifying module, an air and oxygen mixing module, a connecting pipeline and a nasal plug connector connecting module, etc. The nasal high-flow oxygen therapy device can provide high-flow, precise oxygen concentration and heated and humidified air-oxygen mixed gas for effective respiratory treatment of patients, can quickly improve the oxygenation level of patients, and keep the normal operation of airway mucus cilia.

[0003] The heating and humidifying module can be a separate module or integrated into the main body of other respiratory equipment. The heating and humidifying module includes a water tank, and the water tank needs to be installed at a specific position of the main body during use. Usually, the flange structure at the bottom of the water tank can be snapped into the chute on the main body in a translational manner. In order to position the water tank and prevent the water tank from falling off, a limiting component is arranged on the main body. The limiting component is movably arranged on the main body and is reset by a spring. The limiting component needs to be pressed first to expose the opening of the chute, and then the installation and disassembly operations of the water tank can be continued.

[0004] However, the length direction dimension of the limiting component is correspondingly larger than the radial dimension of the water tank. If the edge position in the length direction of the limiting component is pressed, the limiting component is prone to jamming. Therefore, during operation, it is generally necessary to press the middle in the length direction to achieve smooth unlocking. However, since the pressing position and the taking and placing trajectory of the water tank are in the same direction, if the middle in the length direction of the limiting component is pressed, the water tank is very likely to hit the operator's hand, and the heating plate of the water tank is also likely to be hot. Summary of the Utility Model

[0005] The utility model mainly solves the technical problem that the limiting component of the humidifying module is prone to jamming when the edge position in the length direction is pressed.

[0006] In a first aspect, the utility model provides a main body of a respiratory equipment.

[0007] The main body of the respiratory equipment includes:

[0008] A main body housing, on which a chute for loading the bottom flange of the water tank is provided;

[0009] A limiting component, which is movably arranged on the main body housing along a first direction and has a reset position and an unlocking position; the limiting component has a length direction substantially perpendicular to the extending direction of the chute and a width direction substantially parallel to the extending direction of the chute;

[0010] and a balance bar disposed between the main body housing and the limiting member. The balance bar includes a rotating shaft portion extending substantially along the length direction and a swinging rod portion substantially perpendicular to the rotating shaft portion. A rotating shaft fulcrum is provided on the breathing device main body, and the rotating shaft portion is rotatably assembled on the rotating shaft fulcrum, and the rotation axis is parallel to the length direction. Both axial ends of the rotating shaft portion are connected with the swinging rod portion.

[0011] Rod body fitting cavities are provided on both sides in the length direction of the limiting member. The rod body fitting cavities are for inserting the swinging rod portions on the corresponding sides. The rod body fitting cavities have a first limiting wall and a second limiting wall arranged facing each other along the first direction. The first limiting wall and the second limiting wall are used to exert acting forces on the swinging rod portions along the first direction, so that both sides in the length direction of the limiting member move substantially synchronously.

[0012] In one embodiment, a rod body connecting arm is provided on the limiting member, and the rod body connecting arm protrudes toward the main body housing along the first direction. First limiting protrusions and second limiting protrusions are arranged at intervals along the first direction on the side surface of the rod body connecting arm. The interval between the first limiting protrusion and the second limiting protrusion forms the rod body fitting cavity. The first limiting wall is arranged on the first limiting protrusion, and the second limiting wall is arranged on the second limiting protrusion.

[0013] In one embodiment, an avoidance hole is provided on the main body housing. When the limiting member moves between the unlocking position and the reset position, at least a part of the rod body connecting arm is located in the avoidance hole, or at least a part of the rod body connecting arm can move into the avoidance hole.

[0014] In one embodiment, the second limiting protrusion is located at the end of the rod body connecting arm, and a guiding inclined surface is provided on the second limiting protrusion. The guiding inclined surface is used to guide the swinging rod portion to cross the second limiting protrusion to enter the rod body fitting cavity.

[0015] In one embodiment, the rotating shaft fulcrum is provided on the main body housing, and the rotating shaft portion is rotatably assembled on the main body housing.

[0016] In one embodiment, the surface of the first limiting wall is an arc convex surface protruding toward the second limiting wall, and the surface of the second limiting wall is an arc convex surface protruding toward the first limiting wall.

[0017] In one embodiment, the limiting member in the reset position and the main body housing enclose a water tank positioning groove. The limiting member has an inner lateral surface for forming the groove wall of the water tank positioning groove, and also has an outer lateral surface on the side away from the inner lateral surface; the inner lateral surface is an arc concave surface, and the parts of the outer lateral surface corresponding to both ends in the length direction of the limiting member are arc convex surfaces. The arc convex surfaces are adjacent to the main body housing. The inner lateral surface and the outer lateral surface cause both ends in the length direction of the limiting member to form curved bending parts, and the rod body fitting cavity is arranged on the curved bending parts.

[0018] In one embodiment, guiding structures are provided at both ends in the length direction of the limiting member. The guiding structures are used to enable the limiting member to move along the first direction, and the guiding structures are arranged on the side of the limiting member close to the sliding groove.

[0019] In one embodiment, an elastic reset member is included, which is used to apply an elastic force towards the reset position to the limiting member. The elastic reset member is arranged at both ends in the length direction of the limiting member, and the elastic reset member is located on the side of the guiding structure away from the sliding groove.

[0020] In one embodiment, the elastic reset member is located at the middle in the width direction of the limiting member.

[0021] In one embodiment, a guiding post is provided on one of the main body housing and the limiting member, and a guiding hole is provided on the other. The guiding structure is formed by the guiding post and the guiding hole.

[0022] In one embodiment, the main body housing includes a first housing and a second housing. The second housing is connected to the first housing along the first direction, and an activity interval is formed between the first housing and the second housing in the first direction; protruding parts are provided at both ends in the length direction of the limiting member. The protruding parts protrude on the side of the limiting member close to the sliding groove, and the protruding parts are arranged in the activity interval. The second housing is used to limit the activity stroke of the protruding parts.

[0023] In one embodiment, the guiding structure is located at the protruding parts.

[0024] In one embodiment, the guiding post is provided on the first housing.

[0025] In one embodiment, the balance rod includes a transition part, which is connected between the rotating shaft part and the swing rod part. The transition part gradually approaches the sliding groove from the rotating shaft part to the swing rod part.

[0026] In one embodiment, it includes an elastic reset member for applying an elastic force towards the reset position to the limiting member; the elastic reset member is a compression spring, and a spring positioning cavity is provided on one of the main body housing and the limiting member, and a spring guide post is provided on the other. One end of the compression spring is sleeved on the spring guide post, and the other end is embedded in the spring positioning cavity; when the limiting member is in the unlocking position, at least a part of the spring guide post enters the spring positioning cavity.

[0027] In one embodiment, pressing indication marks for indicating the unlocking pressing parts are provided at both ends in the length direction of the limiting member.

[0028] In one embodiment, in the circumferential direction of the rotating shaft portion, the positions of the swing rod portions are the same.

[0029] In one embodiment, in the circumferential direction of the rotating shaft portion, the positions of the swing rod portions are different, forming an angular difference, and the distances from the rod body fitting cavities corresponding to the swing rod portions with different positions in the circumferential direction of the rotating shaft portion to the axis of the rotating shaft portion are different.

[0030] In a second aspect, the present utility model provides a breathing device.

[0031] The breathing device includes:

[0032] A main body, where the main body is the breathing device main body described in any one of the above;

[0033] A water tank, and the water tank is detachably arranged on the main body.

[0034] Advantages of the present utility model:

[0035] According to the breathing device main body in the present utility model, a balance rod is provided between the main body housing and the limiting member. The balance rod can be rotatably arranged on the corresponding rotating shaft fulcrum through the rotating shaft portion, and the swing rod portions connected to both ends of the rotating shaft portion can swing synchronously following the rotation of the rotating shaft portion. At the same time, the swing rod portions can cooperate with the rod body fitting cavities on both sides in the length direction of the limiting member through the first limiting wall and the second limiting wall. No matter which part in the length direction of the limiting member is pressed, the balance rod can apply the pressing force more evenly to both sides in the length direction of the limiting member, thereby facilitating avoiding jamming of the limiting member and facilitating the unlocking operation of the limiting member through different parts in the length direction of the limiting member. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a schematic structural diagram of an embodiment of the breathing device in the present utility model;

[0037] Figure 2 is Figure 1 a top view of the water tank and the limiting member.

[0038] Figure 3 It is an exploded view of the structure at the limiting component;

[0039] Figure 4 It is a schematic diagram of the assembly relationship between the limiting component and the main body housing;

[0040] Figure 5 It is Figure 4 A partial enlarged view at position A in

[0041] Figure 6 It is a schematic diagram of the structure of one side of the limiting component for connecting with the balance rod;

[0042] Figure 7 It is Figure 6 The B - B sectional view of the limiting component in

[0043] Figure 8 It is a three - dimensional view of the mating part on the main body housing with the limiting component, and the limiting component is hidden in the figure;

[0044] Figure 9 It is a schematic diagram of the structure of the first housing;

[0045] Figure 10 It is a schematic diagram of the structure of one side of the second housing close to the first housing.

[0046] List of the names of the features corresponding to the reference numerals in the figure:

[0047] 10. Main body;

[0048] 20. Water tank; 21. Bottom flange;

[0049] 100. Main body housing; 110. First housing; 111. Guide post; 120. Second housing; 121. Avoidance hole; 122. Spring positioning cavity; 123. Rib; 124. Rib plate; 125. Support protrusion; 126. Clamping protrusion; 127. Enclosing plate; 130. Slide groove;

[0050] 200. Limiting component; 210. Rod connecting arm; 211. First limiting protrusion; 2111. First limiting wall; 212. Second limiting protrusion; 2121. Second limiting wall; 2122. Guiding inclined surface; 213. Rod fitting cavity; 2141. Inner side surface; 2142. Outer side surface; 21421. Arc convex surface; 215. Guide hole; 216. Protrusion; 217. Spring guide post; 218. Pressing indication mark;

[0051] 300. Balance rod; 310. Rotating shaft part; 320. Swing rod part; 330. Transition part;

[0052] 400. Elastic reset component;

[0053] 500. Water tank positioning groove. Specific implementation manner

[0054] The present utility model will be further described in detail below in conjunction with the accompanying drawings through specific implementation manners. Similar elements in different implementation manners adopt related similar element numbers. In the following implementation manners, many detailed descriptions are for enabling better understanding of the present application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification, which is to avoid the core part of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations according to the descriptions in the specification and the general technical knowledge in the art.

[0055] In addition, the features, operations, or characteristics described in the specification can be combined in any appropriate manner to form various implementation manners. At the same time, the steps or actions in the method description can also be reordered or adjusted in an obvious manner for those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for clearly describing a certain embodiment, and do not mean a necessary sequence, unless it is stated that a certain sequence must be followed.

[0056] The serial numbers assigned to the components in this article, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. And the "connection" and "coupling" mentioned in the present application, unless otherwise specified, both include direct and indirect connection (coupling).

[0057] The gas sources of devices such as oxygen therapy devices, ventilators, and anesthesia machines are often relatively dry and cold, which can easily stimulate the cardiopulmonary system. The heating and humidifying module has the function of heating and humidifying the breathing gas and can be used as a supporting breathing device. By heating and humidifying the breathing airflow, it is beneficial for the patient to adapt to mechanical ventilation, maintain the moisture and activity of the alveoli, keep the airway and airway secretions moist, and is also beneficial for sputum suction and preventing airway blockage. Therefore, the heating and humidifying function is very crucial.

[0058] The heating and humidifying function is an important function required for supporting respiratory devices such as ventilators, humidifiers, and oxygen therapy devices. The implementation principle is to heat the water in the water tank installed on the instrument to generate hot water at a certain temperature, and the hot water convects and heats and humidifies the gas flowing through the water tank. In one embodiment, the heating and humidifying module may include a main unit and a water tank. The main unit includes a housing, a heating module, and a control module. For the heating and humidifying module integrated on other respiratory devices, the main unit may be a part of the corresponding other respiratory device, and the housing may also be a part of the corresponding other respiratory device.

[0059] Please refer to Figure 1 , in one embodiment of the present utility model, the respiratory device is a high-flow oxygen therapy device. The high-flow oxygen therapy device can use a dedicated air compressor to provide breathing gas for patients by using filtered air (mixed with oxygen when necessary). When the patient breathes, the device provides a certain flow rate of warm and humidified gas for effective treatment. The main unit 10 of the high-flow oxygen therapy device may include a main unit housing 100, a fan, an oxygen supply control component, an air-oxygen mixing module, a heating and humidifying module, etc. Among them, the fan is a driving device for the gas path and can provide breathing gas for the patient during operation. The oxygen supply control component can control the supply of oxygen through valves and sensors. The air-oxygen mixing module can realize the mixing of air and oxygen. The heating and humidifying module may include a heating module and a water tank 20. The water tank 20 is used as a supporting device for the main unit 10 and can be detachably arranged on the main unit 10.

[0060] The specific structure of the high-flow oxygen therapy device can refer to the existing structure in the related art. Considering that it has no direct relation to the innovative content and the technical problems to be solved in this application, it will not be elaborated here.

[0061] The main unit housing 100 can provide a removable placement for the water tank 20 and can heat the water tank 20 through the heating module. The heating module is located at the top of the main unit housing 100, and its top surface can contact the bottom surface of the water tank 20 and provide heat energy to the water tank 20 by heat transfer, and then generate a corresponding heating temperature under the control of the control module (such as the main control board) to realize the heating of the water in the water tank 20, so that the water in the water tank 20 meets the corresponding heating and humidifying requirements. The specific structure and control method of the heating module can adopt the existing technology and will not be specifically described in the present utility model.

[0062] The water tank 20 is a conventional structure on the heating and humidifying module. Briefly speaking, it can be considered as a tank body with an inlet port and an outlet port, also known as a humidifying tank. The water tank 20 may include a main body located in the lower half, as well as an inlet port and an outlet port located at the top; the cross-section of the lower half of the water tank 20 is generally circular, and the inlet port and the outlet port are connected to the top surface of the main body and can communicate with the transfer pipe fittings. In some other embodiments, the transfer pipe fittings may not be required. The water tank 20 can be configured to receive a gas flow through the inlet port, heat the water in the water tank 20 by relying on the above-mentioned heating module to heat and humidify the gas flow, and discharge the heated and humidified gas flow through the outlet port.

[0063] In order to achieve the detachable loading of the water tank 20, in a specific embodiment, the water tank 20 may include a plastic cover body and a metal chassis connected to the bottom of the plastic cover body, and the bottommost part of the plastic cover body and the metal chassis both protrude radially outward of the water tank 20 to form a bottom flange 21. In order to achieve the installation and positioning of the water tank 20, a chute 130 is provided on the main body housing 100. The chute 130 can often be horizontally arranged to facilitate controlling the liquid level in the water tank 20. When installing the water tank 20 on the main body housing 100, the bottom flange 21 can be aligned with the loading port at the end of the chute 130 and pushed in, and the water tank 20 can be limited in the vertical direction by relying on the limiting part at the bottom of the water tank 20. It should be noted that the specific structure of the flange structure at the bottom of the water tank 20 is not limited. For example, it can also be formed by the plastic cover body alone, or formed by the metal chassis alone.

[0064] A limiting component 200 is also provided on the main body housing 100 corresponding to the water tank loading port. In one embodiment, the limiting component 200 is movably arranged on the main body housing 100 along a first direction. Exemplarily, the first direction can be Figure 1 the up and down direction in it. The movement of the limiting component 200 along the first direction can be realized by relying on the guiding structure between the main body housing 100 and the limiting component 200. The limiting component 200 has a reset position and an unlocking position on the moving stroke in the first direction.

[0065] The above-mentioned chute 130 is located on both sides of the main body housing 100 along Figure 1 the left and right directions in it, and the two chutes 130 both extend along the front and rear directions. The limiting component 200 has a length direction substantially perpendicular to the extending direction of the chute 130, and a width direction substantially parallel to the extending direction of the chute 130. The extending direction of the chute 130 is Figure 1 the front and rear direction in it, that is, the moving direction when the bottom flange 21 enters and exits the chute 130; the length direction of the limiting component 200 is also Figure 1 the left and right direction in it, and the width direction of the limiting component 200 is also Figure 1The front - rear direction. It should be noted that those skilled in the art can understand that the above - mentioned length direction and width direction are defined for the entire limiting component 200, and it does not mean that the contour edge of the limiting component 200 is a straight line. Moreover, the above - mentioned length direction can have a skew - angle error within 5 degrees, that is, it has an included angle of 90 ± 5 degrees with the extending direction of the sliding groove 130; and the above - mentioned width direction can also have a skew - angle error within 5 degrees, that is, it has an included angle of ± 5 degrees with the extending direction of the sliding groove 130.

[0066] Such as Figure 1 , the limiting component 200 in the reset position and the main body housing 100 enclose a water - tank positioning groove 500. Such as Figure 2 , Figure 3 , Figure 6 , Figure 7 , the limiting component 200 has a lateral inner surface 2141 on the side closer to the sliding groove 130 in the width direction and a lateral outer surface 2142 on the side farther from the sliding groove 130 in the width direction. The lateral inner surface 2141 is used to form the groove wall of the water - tank positioning groove 500. The lateral inner surface 2141 is an arc surface, which can fit with the outer peripheral surface of the water tank 20, so as to achieve a better positioning effect on the water tank 20. The lateral outer surface 2142 is located on the side of the limiting component 200 away from the lateral inner surface 2141. The parts of the lateral outer surface 2142 corresponding to both ends of the limiting component 200 in the length direction are arc - shaped convex surfaces 21421, and the arc - shaped convex surfaces 21421 are adjacent to the main body housing 100. It should be noted that the adjacent relationship between the arc - shaped convex surface 21421 and the main body housing 100 does not limit that the arc - shaped convex surface 21421 and the main body housing 100 have a connection relationship. They can be connected and in contact with each other, or there can be a gap.

[0067] It should be noted that the upper, lower, left, right, front, and rear directions shown in the figure are for the convenience of more clearly explaining the specific implementation manners of the present utility model. Making such orientation definitions in the embodiments is only an example to more clearly illustrate the positional relationship between each component, and does not limit that the specific implementation manners of the present utility model must be arranged in this way.

[0068] The reset position of the limiting component 200 is the uppermost position of the movement stroke of the limiting component 200. When the limiting component 200 is in the reset position, it can limit the water tank 20 along the extending direction of the sliding groove 130, close the loading port and prevent the water tank 20 from easily exiting. The unlocking position of the limiting component 200 is the lowermost position of the movement stroke of the limiting component 200. At this time, the limiting component 200 is pressed and the loading port is exposed, so that the bottom flange 21 of the water tank 20 can be inserted into the sliding groove 130 from the loading port or removed from the sliding groove 130.

[0069] In one embodiment, please refer to Figure 1 , Figure 3, the main body housing 100 includes a first housing 110 and a second housing 120, and the second housing 120 is connected to the first housing 110 along the Figure 1 vertical direction therein. The connection manner between the first housing 110 and the second housing 120 is not limited. For example, they can be fixed by means of snap connection, bonding, ultrasonic welding, screw connection, etc. In some other embodiments, the first housing 110 and the second housing 120 can also be an integral structure. An active interval is formed between the first housing 110 and the second housing 120 in the vertical direction. Protrusions 216 are provided at both ends of the length direction of the limiting member 200. The protrusions 216 protrude on the side of the limiting member 200 close to the sliding groove 130, and the protrusions 216 are arranged in the active interval. When the limiting member 200 moves upward, the active interval can limit the movement stroke of the protrusions 216. The provision of the protrusions 216 can save the space inside the limiting member 200, and is also beneficial to reducing the length dimension and width dimension of the limiting member 200, so that it is more beneficial for the part of the limiting member 200 close to the edge to be stuck when pressed. In addition, please refer to Figure 10 , a retaining edge 123 is provided on the second housing 120. The interval between the retaining edge 123 and the first housing 110 can form a sliding groove 130 for the bottom flange 21 of the water supply tank 20 to be inserted, and the front end of the retaining edge 123 can block the protrusions 216 on the limiting member 200 along the first direction.

[0070] In this application, the downward movement stroke of the limiting member 200 can be limited by the first housing 110. A surrounding plate 127 for forming the outer peripheral surface of the main body housing 100 is provided on the front side part of the first housing 110, and some rib plates 124 can also be arranged inside. The top surfaces of the surrounding plate 127 and the rib plates 124 can both support the limiting member 200, thereby limiting the downward movement stroke of the limiting member 200. In addition, in some embodiments, the bottom wall of the first housing 110 can also be used to support the bottom of the limiting member 200 to limit the downward movement stroke of the limiting member 200.

[0071] In one embodiment, the guiding structure is located at the protrusions 216. In a specific embodiment, a guiding hole 215 is provided on the protrusions 216, and a guiding post 111 is provided on the main body housing 100. The guiding post 111 and the guiding hole 215 cooperate with each other to realize the guiding movement of the limiting member 200. The guiding structure provided on the protrusions 216 can also avoid occupying the space inside the limiting member 200. Please refer to Figure 3 and Figure 9, the guide column 111 can be fixedly connected to the first shell 110 and extend into the movable interval between the first shell 110 and the second shell 120. During assembly, before the second shell 120 is fixedly connected to the first shell 110, the limiting component 200 can be installed first, so that the guide column 111 is matched with the guide hole 215, and then the second shell 120 is fixed to the first shell 110. In some other embodiments, if the first shell 110 and the second shell 120 are an integral structure, the guide column 111 can be detachably assembled to the host shell 100, and during assembly, the limiting component 200 can be installed first, and then the guide column 111 can be installed.

[0072] In some other embodiments, the guide structure may also be replaced with other forms, for example, a guide groove extending along the first direction may be provided on the host housing 100, and a guide protrusion may be provided on the limiting component 200, and the guide protrusion cooperates with the guide groove to achieve guidance; for another example, a groove may be provided on the host housing 100, and the groove wall of the groove is adapted to the outer surface of the side wall of the limiting component 200 to achieve guidance. In addition, those skilled in the art can understand that the movement stroke of the limiting component 200 may also be limited by other structures. For example, for the above-mentioned guide groove, a stopper may be provided at the end of the guide groove, such as a stopper screw, a stopper protrusion, a stopper fold, etc., and the stopper and the guide protrusion are relied on to form a limit.

[0073] The oxygen therapy device also includes an elastic reset member 400, which is used to apply an elastic force to the limiting member 200 toward the reset position, thereby achieving elastic reset of the limiting member 200. In one embodiment, the elastic reset member 400 is arranged at both ends of the limiting member 200 in the length direction, and the elastic reset member 400 is located on the side of the guide structure away from the slide groove 130, that is, it is arranged in front of the guide structure. When pressing the limiting member 200, the operator mainly needs to overcome the elastic force of the elastic reset member 400. Therefore, the above-mentioned setting position of the elastic reset member 400 is conducive to avoiding a large offset between the pressing force of the operator and the elastic force of the elastic reset member 400, which is conducive to reducing or avoiding the tendency of the limiting member 200 to swing when it is pressed. The specific structure of the elastic reset member 400 is not limited. If Figure 3 , Figure 4 , Figure 8As shown, the elastic reset member 400 can be a compression spring, and a compression spring is provided on each of the two sides in the length direction of the limit member 200. In order to ensure the reliable operation of the elastic reset member 400, in one embodiment, a spring positioning cavity 122 is provided on one of the main body housing 100 and the limit member 200, and a spring guide post 217 is provided on the other. One end of the compression spring is sleeved on the spring guide post 217, and the other end is embedded in the spring positioning cavity 122; the spring guide post 217 and the spring positioning cavity 122 can position the spring and prevent the spring from skewing. In addition, when the limit member 200 is in the unlocked position, at least a part of the spring guide post 217 can enter the spring positioning cavity 122, which is beneficial to reducing the thickness of the part of the breathing device main body 10 corresponding to the limit part.

[0074] It should be noted that, in some other embodiments, the elastic reset member 400 can also be replaced with other structures. For example, an elastic sheet is provided between the limit member 200 and the main body housing 100. The elastic sheet can be an obliquely arranged strip-shaped structure, with one end fixed to one of the limit member 200 and the main body housing 100, and the other end abutted against the other of the limit member 200 and the main body housing 100, and an elastic force is applied to the limit member 200 through elastic deflection. In addition, the number of the elastic reset members 400 can also be three or more than four. For example, an elastic reset member 400 is provided at each of the two ends and the middle in the length direction of the limit member 200.

[0075] In some embodiments, the dimension of the limit member 200 in the length direction can be greater than the left-right spacing of the sliding groove 130, so as to form a closed installation cavity with the main body housing 100, which can better realize the limitation of the water tank 20. Of course, in some other embodiments, the dimension of the limit member 200 in the length direction can also be less than or equal to the left-right spacing of the sliding groove 130, as long as it can limit the water tank 20.

[0076] When installing the water tank 20, the limiting member 200 can be pressed by hand or the bottom surface of the water tank 20 can be used to press the limiting member 200, so that the limiting member 200 moves to the unlocking position, and the loading opening of the water tank is exposed. Then, the water tank 20 can be moved along the chute 130 to a set position, for example, a position where it abuts against the rear side wall of the installation cavity on the main body housing 100. After being loaded in place, the bottom surface of the water tank 20 disengages from the limiting member 200, and the limiting member 200 can move upward to the reset position under the action of the elastic reset member 400. When the water tank 20 needs to be taken out, the limiting member 200 can be pressed by hand, so that the limiting member 200 moves to the unlocking position, and the loading opening of the water tank is exposed. Then, the water tank 20 can be removed along the chute 130. However, since the position where the limiting member 200 is pressed is in the same direction as the taking and placing trajectory of the water tank 20, if the middle of the length direction of the limiting member 200 is pressed, the water tank 20 is likely to hit the operator's hand, and the heating plate of the water tank 20 is also likely to burn the hand. However, if the middle of the length direction of the limiting member 200 is pressed for unlocking, due to the relatively long length of the limiting member 200, when any side of the length direction of the limiting member 200 is pressed, the other side may not move synchronously, which will cause the pressed side to tilt and jam, affecting the operation efficiency and user experience.

[0077] To solve the above problems, a balance rod 300 is provided in the breathing device main body 10 of the present utility model. The balance rod 300 includes swing rod portions 320 located on both sides of the length direction of the limiting member 200. Each swing rod portion 320 is connected to the rotating shaft portion 310. When any one of the swing rod portions 320 swings, the other swing rod portions 320 can swing following it. At the same time, please refer to Figure 5 and Figure 7The limiting component 200 is provided with a rod body adapting cavity 213, which has a first limiting wall 2111 and a second limiting wall 2121 arranged opposite to each other along a first direction. The first limiting wall 2111 and the second limiting wall 2121 are used to exert a force on the swing rod part 320 along the first direction, that is, when the swing rod part 320 swings, it can exert a force on the first limiting wall 2111 or the second limiting wall 2121 along the swinging direction to make the limiting component 200 move synchronously to the corresponding side, and when the limiting component 200 moves along the first direction, it can also drive the swing rod part 320 to swing to the corresponding side through the first limiting wall 2111 or the second limiting wall 2121. By providing the above-mentioned balancing rod 300 and the rod body adapting cavity 213, the two sides of the length direction of the limiting component 200 can move basically synchronously. It should be noted that, since there may be a matching gap between the rod body adapting cavity 213 and the balance bar 300, and the balance bar 300 may also undergo a certain elastic deformation when subjected to force, the movement of the two sides of the length direction of the limiting component 200 may not be completely synchronized. Of course, by controlling the above-mentioned matching gap and the rigidity of the balance bar 300, the movement synchronization of the two sides of the length direction of the limiting component 200 can be improved. However, compared with not providing the balance bar 300, it is easier to meet the synchronous movement requirements of the two sides of the length direction of the limiting component 200.

[0078] In a specific embodiment, the balance bar 300 is disposed between the main housing 100 and the limiting component 200, and can be located in the assembly space between the bottom of the limiting component 200 and the top of the main housing 100. The shaft portion 310 of the balance bar 300 basically extends along the length direction of the limiting component 200, and the rocker portion 320 is basically perpendicular to the shaft portion 310. In order to facilitate the stable rotation of the balance bar 300, in one embodiment, the shaft portion 310 is a straight structure as a whole. The above-mentioned "basically extending along the length of the limiting component" and "basically perpendicular" are based on the fact that the balance bar 300 can achieve synchronous movement at both ends of the length direction of the limiting component 200. For example, the length direction of the shaft portion 310 can be consistent with the length direction of the limiting component 200 (i.e. Figure 1 The extending direction of the swing arm portion 320 may have an angle of 90±20 degrees with the extending direction of the rotating shaft portion 310 (in the left and right directions).

[0079] The swing rod portion 320 may be directly connected to both ends of the shaft portion 310 in the length direction, or may be connected between the shaft portion 310 and the swing rod portion 320 through a transition portion 330. Figure 3 , Figure 8, the transition part 330 gradually approaches the chute 130 from the rotating shaft part 310 to the swing rod part 320, that is, the transition part 330 is a bent structure, so that the force application points between the two ends of the limiting member 200 in the length direction and the swing rod part 320 are closer to the middle in the width direction of the two ends of the limiting member 200 in the length direction. The shape of the above transition part 330 is not limited. For example, it can be a straight shape, an arc shape or an irregular shape. It should be noted that the number of swing rod parts 320 can also be increased. For example, three, four, five or more than six can be set.

[0080] In an embodiment, the rotating shaft part 310 is rotationally assembled on the main machine housing 100, and the rotation axis is parallel to the length direction. Swing rod parts 320 are connected to both axial ends of the rotating shaft part 310, and each swing rod part 320 is located on the same side of the rotating shaft part 310. In some embodiments, two or more support protrusions 125 can be provided on the main machine housing 100, and grooves can be provided on the support protrusions 125 for the rotating shaft part 310 to rotate. In addition, two or more clamping protrusions 126 can also be provided on the main machine housing 100. The support protrusions 125 are distributed along the axial direction of the rotating shaft part 310, and the clamping protrusions 126 are also distributed along the axial direction of the rotating shaft part 310, and the clamping protrusions 126 and the support protrusions 125 can be arranged staggeredly. The clamping protrusions 126 and the support protrusions 125 together form a rotating shaft fulcrum. After the rotating shaft part 310 is snapped into the card slot on the clamping protrusion 126, the closing structure formed by the clamping protrusion 126 can limit the rotating shaft part 310 from disengaging from the groove on the support protrusion 125, which is convenient for rotatably assembling the balance rod 300 to the main machine housing 100 and is also convenient for disassembly. In some other embodiments, the rotating shaft fulcrum can also be arranged on other components of the breathing device main machine 10. For example, a rotating seat can be additionally assembled on the housing, and the rotating seat is relied on to form the rotating shaft fulcrum.

[0081] Considering the movement synchronization of each swing rod part 320, in a specific embodiment, each swing rod part 320 is located on the same side of the rotating shaft part 310. In the circumferential direction of the rotating shaft part 310, the setting positions of each swing rod part 320 are the same, and two adjacent swing rod parts 320 can form a "U" - shaped structure with the rotating shaft part 310. Those skilled in the art should know that the circumferential direction of the rotating shaft part 310 is the circumferential direction around the rotation axis of the rotating shaft part 310.

[0082] The balance rod 300 adopts the above-mentioned "U" - shaped structure. The two sides in the length direction of the limiting component 200 can be set to the same structure, which is convenient for product design and manufacturing, and is conducive to enabling the two sides in the length direction of the limiting component 200 to have a high action synchronization. Since the main purpose of setting the balance rod 300 is to prevent the limiting component 200 from getting stuck when being pressed, a very high action synchronization is not required. Therefore, in some other embodiments, there can be an included angle between the swing rod parts 320 in the circumferential direction of the rotating shaft part 310. In addition, the distances from the rod body fitting cavities 213 corresponding to the swing rod parts 320 at different circumferential positions in the circumferential direction of the rotating shaft part 310 to the axis of the rotating shaft part 310 can be different, that is, in this way, displacement differences can be compensated and coordinated when the circumferential positions of the swing rod parts 320 are different, which can better meet the situation where the two sides in the length direction of the limiting component 200 are asymmetric.

[0083] Rod body fitting cavities 213 are provided on both sides in the length direction of the limiting component 200, and the rod body fitting cavities 213 are for the corresponding swing rod parts 320 on the respective sides to be inserted. The rod body fitting cavities 213 can be fitting holes or fitting grooves. In one embodiment, a rod body connecting arm 210 is provided on the limiting component 200, and the rod body connecting arm 210 protrudes towards the main machine housing 100 along the first direction; on the side surface of the rod body connecting arm 210, a first limiting protrusion 211 and a second limiting protrusion 212 are arranged at intervals along the first direction. There is an interval between the first limiting protrusion 211 and the second limiting protrusion 212, and the interval is used to form the rod body fitting cavity 213. A first limiting wall 2111 is arranged on the first limiting protrusion 211, and a second limiting wall 2121 is arranged on the second limiting protrusion 212. Of course, in order to be adapted to the swing rod parts 320 of the balance rod 300, the positions of the rod body fitting cavities 213 in the first direction are the same. For example, if the top surface of the limiting component 200 is a plane, the distances from the rod body fitting cavities 213 to the top surface of the limiting component 200 are the same.

[0084] Since the swing rod portion 320 is swingably arranged along the axis of the rotating shaft portion 310, when the end of the swing rod portion 320 swings, in addition to generating a displacement in the first direction, i.e., a displacement in the up and down direction, it will also generate a displacement in the width direction of the limiting member 200, i.e., a displacement in the front and back direction. Therefore, the rod body fitting cavity 213 can allow the corresponding side of the swing rod portion 320 to be inserted, so as to adapt to the displacement of the swing rod portion 320 in the up and down direction and the front and back direction by relying on the relative movement between the swing rod portion 320 and the rod body fitting cavity 213. At the same time, when the swing rod portion 320 swings, it can deflect relative to the rod body fitting cavity 213 within the rod body fitting cavity 213. For this purpose, in a specific embodiment, the surface of the first limiting wall 2111 is an arc convex surface protruding towards the second limiting wall 2121, and the surface of the second limiting wall 2121 is an arc convex surface protruding towards the first limiting wall 2111. This can ensure the flexible swing of the swing rod portion 320 within the rod body fitting cavity 213, and avoid the change of the gap between the swing rod portion 320 and the first limiting wall 2111 and the second limiting wall 2121 when the swing rod portion 320 swings, which is beneficial to improving the action synchronization of the balance rod 300 and the limiting portion.

[0085] In one embodiment, the second limiting protrusion 212 is located at the end of the rod body connecting arm 210, and a guiding inclined surface 2122 is provided on the second limiting protrusion 212. The guiding inclined surface 2122 is used to guide the swing rod portion 320 to cross the second limiting protrusion 212 to enter the rod body fitting cavity 213. The above-mentioned guiding inclined surface 2122 is provided to facilitate the entry of the swing rod portion 320 into the rod body fitting cavity 213. Specifically, during assembly, the balance rod 300 can be first installed in the card slot on the main body housing to achieve the rotational assembly of the balance rod 300. Then, the limiting member 200 is installed on the main body housing 100 along the first direction. During the installation of the limiting member 200, the guiding inclined surfaces 2122 at the ends of the rod body connecting arms 210 at both ends of the limiting member 200 are simultaneously in contact with the corresponding swing rod portions 320. By relying on the guiding inclined surfaces 2122, both the rod body connecting arm 210 and the swing rod portion 320 are deformed along the length direction of the limiting member 200, so that the swing rod portion 320 can cross the second limiting protrusion 212 and finally enter the rod body fitting cavity 213. The installation is convenient and is beneficial to realizing blind installation, that is, realizing the cooperation between the limiting member 200 and the balance rod 300 without seeing the balance rod 300.

[0086] In order to realize the positioning of the balance rod 300 in the length direction of the limiting member 200, in some embodiments, such as Figure 3 and Figure 8 , the corresponding rib plate 124 on the main body housing can extend along the width direction of the limiting member 200, that is, be arranged perpendicular to the axis of the balance rod 300, so as to form a limiting relationship with the swing rod portion 320.

[0087] In one embodiment, an avoidance hole 121 is provided on the main machine housing 100. When the limiting member 200 moves between the unlocking position and the reset position, at least a part of the rod connecting arm 210 is located in the avoidance hole 121, or at least a part of the rod connecting arm 210 can move into the avoidance hole 121. In a specific embodiment, the avoidance hole 121 can also be provided on the second housing 120, and the rod connecting arm 210 can pass through the avoidance hole 121 on the second housing 120 and enter the cavity between the first housing 110 and the second housing 120, so as to more easily meet the stroke requirements of the limiting member 200.

[0088] In one embodiment, the above-mentioned inner lateral surface 2141 and outer lateral surface 2142 can form curved bending portions at both ends in the length direction of the limiting member 200, and the arc convex surface 21421 can form a cut corner on the limiting member 200, which is equivalent to reducing the width dimension at both ends in the length direction of the limiting member 200. There is no possibility of the cut corner being pressed, so the size of the optional pressing area of the operator in the width direction of the limiting member 200 can be reduced; moreover, the rod fitting cavity 213 is arranged on the curved bending portion, which can make the force on the curved bending portion more balanced in the width direction of the limiting member 200, and it is not easy to have inconsistent actions on both sides in the width direction of the limiting member 200. Therefore, only one balance rod 300 is needed to realize the synchronous action of each part of the limiting member 200, with a simple structure, convenient assembly and low cost.

[0089] In addition, in order to facilitate guiding the operator to press the limiting member 200, pressing indication marks 218 for indicating the unlocking pressing positions are provided at both ends in the length direction of the limiting member 200, which is beneficial for the operator to unlock the limiting member 200 more conveniently.

[0090] When the water tank 20 needs to be installed or removed, with both ends in the length direction of the limiting member 200 being the first end and the second end respectively, the operator can press the first end of the limiting member 200, for example, press the part of the pressing indication mark 218 at the first end, so that the first end of the limiting member 200 is pressed down; when the first end of the limiting member 200 moves downward, the first limiting wall 2111 of the rod fitting cavity 213 on the limiting member 200 will drive the swing rod part 320 on the corresponding side of the balance rod 300 to swing downward, and then the balance rod 300 rotates. The swing rod part 320 at the other end of the balance rod 300 will swing downward synchronously, and apply a driving force to the second limiting wall 2121 below the rod fitting cavity 213 on the second end of the limiting member 200, driving the second end of the limiting member 200 to move downward synchronously, so as to realize the synchronous action of both ends in the length direction of the limiting member 200 and avoid jamming due to inconsistent actions of both ends of the longer limiting member 200.

[0091] Embodiment of the breathing device main machine in the present utility model:

[0092] The structure of the main body of the breathing device is the same as that of the main body 10 of the breathing device in any of the above embodiments of the breathing device, and will not be described in detail here.

[0093] The above uses specific examples to elaborate on the present utility model, which is only used to help understand the present utility model and is not intended to limit the present utility model. For those skilled in the technical field to which the present utility model belongs, according to the idea of the present utility model, several simple deductions, deformations or substitutions can also be made.

Claims

1. Respiratory equipment main unit, characterized in that, Comprising: A main body housing, on which a chute for inserting the bottom flange of the water supply tank is provided; A limiting member, movably arranged on the main body housing along a first direction, having a reset position and an unlocking position; the limiting member has a length direction substantially perpendicular to the extending direction of the chute, and a width direction substantially parallel to the extending direction of the chute; And a balance rod, arranged between the main body housing and the limiting member, the balance rod includes a rotating shaft portion extending substantially along the length direction, and a swing rod portion substantially perpendicular to the rotating shaft portion; a rotating shaft fulcrum is provided on the main body of the breathing device, and the rotating shaft portion is rotatably assembled on the rotating shaft fulcrum, and the rotation axis is parallel to the length direction, and swing rod portions are connected to both axial ends of the rotating shaft portion; Rod body fitting cavities are provided on both sides in the length direction of the limiting member, and the rod body fitting cavities are for inserting the swing rod portions on the corresponding sides, and the rod body fitting cavities have a first limiting wall and a second limiting wall arranged facing each other along the first direction, and the first limiting wall and the second limiting wall are used to apply acting forces to the swing rod portions along the first direction to make the two sides in the length direction of the limiting member move substantially synchronously.

2. The breathing device main unit according to claim 1, characterized in that, A rod body connecting arm is provided on the limiting member, and the rod body connecting arm protrudes towards the main body housing along the first direction; first limiting protrusions and second limiting protrusions are arranged at intervals along the first direction on the side surface of the rod body connecting arm, and the interval between the first limiting protrusion and the second limiting protrusion forms the rod body fitting cavity, the first limiting wall is arranged on the first limiting protrusion, and the second limiting wall is arranged on the second limiting protrusion.

3. The breathing device main unit according to claim 2, characterized in that, An avoidance hole is provided on the main body housing, and when the limiting member moves between the unlocking position and the reset position, at least a part of the rod body connecting arm is located in the avoidance hole, or at least a part of the rod body connecting arm can move into the avoidance hole.

4. The breathing device main unit according to claim 2, characterized in that, The second limiting protrusion is located at the end of the rod body connecting arm, and a guiding inclined surface is provided on the second limiting protrusion, and the guiding inclined surface is used to guide the swing rod portion to cross the second limiting protrusion to enter the rod body fitting cavity.

5. The breathing device main unit according to any one of claims 1 to 4, characterized in that, The rotating shaft fulcrum is arranged on the main body housing, and the rotating shaft portion is rotatably assembled on the main body housing.

6. The breathing device main unit according to any one of claims 1 to 4, characterized in that, The surface of the first limiting wall is an arc convex surface protruding towards the second limiting wall, and the surface of the second limiting wall is an arc convex surface protruding towards the first limiting wall.

7. The main body of the breathing device according to any one of claims 1 to 4, characterized in that The limiting member in the reset position and the main body housing enclose a water tank positioning groove, the limiting member has a side inner surface for forming the groove wall of the water tank positioning groove, and also has a side outer surface on the side far from the side inner surface; the side inner surface is an arc concave surface, and the parts of the side outer surface corresponding to both ends in the length direction of the limiting member are arc convex surfaces, the arc convex surfaces are adjacent to the main body housing, the side inner surface and the side outer surface make both ends in the length direction of the limiting member form a curved bending part, and the rod body fitting cavity is arranged on the curved bending part.

8. The main body of the breathing device according to any one of claims 1 to 4, characterized in that, The two ends of the limiting member in the length direction are provided with guiding structures, which are used to enable the limiting member to move along the first direction, and the guiding structures are arranged on the side of the limiting member close to the sliding groove.

9. The breathing device main unit according to claim 8, characterized in that, It includes an elastic reset member for applying an elastic force towards the reset position to the limiting member. The elastic reset member is arranged at the two ends of the limiting member in the length direction, and the elastic reset member is located on the side of the guiding structure away from the sliding groove.

10. The breathing device main unit according to claim 9, characterized in that, The elastic reset member is located in the middle of the limiting member in the width direction.

11. The breathing device main unit according to claim 8, wherein, One of the main body housing and the limiting member is provided with a guiding post, and the other is provided with a guiding hole, and the guiding structure is formed by the guiding post and the guiding hole.

12. The breathing device main unit according to claim 11, characterized in that, The main body housing includes a first housing and a second housing. The second housing is connected to the first housing along the first direction, and an activity interval is formed between the first housing and the second housing in the first direction; the two ends of the limiting member in the length direction are provided with protruding parts, which protrude on the side of the limiting member close to the sliding groove, and the protruding parts are arranged in the activity interval, and the second housing is used to limit the activity stroke of the protruding parts.

13. The breathing device main unit according to claim 12, characterized in that, The guiding structure is located at the protruding part.

14. The breathing device main unit according to claim 12, characterized in that, The guiding post is arranged on the first housing.

15. The breathing device main unit according to any one of claims 1 to 4, characterized in that, The balance rod includes a transition part, which is connected between the rotating shaft part and the swinging rod part, and the transition part gradually approaches the sliding groove from the rotating shaft part to the swinging rod part.

16. The breathing device main unit according to any one of claims 1 to 4, characterized in that It includes an elastic reset member for applying an elastic force towards the reset position to the limiting member; the elastic reset member is a compression spring. One of the main body housing and the limiting member is provided with a spring positioning cavity, and the other is provided with a spring guide post. One end of the compression spring is sleeved on the spring guide post, and the other end is embedded in the spring positioning cavity; when the limiting member is in the unlocking position, at least a part of the spring guide post enters the spring positioning cavity.

17. The breathing device main unit according to any one of claims 1 to 4, characterized in that, The two ends of the limiting member in the length direction are provided with pressing indication marks for indicating the unlocking pressing parts.

18. The breathing device main unit according to any one of claims 1 to 4, characterized in that, In the circumferential direction of the rotating shaft part, the positions of the swinging rod parts are the same.

19. The breathing device main unit according to claim 18, characterized in that, In the circumferential direction of the rotating shaft part, the positions of the swinging rod parts are different, forming an angular difference; the distances from the rod body fitting cavities corresponding to the swinging rod parts with different positions in the circumferential direction of the rotating shaft part to the axis of the rotating shaft part are different.

20. Respiratory device, characterized in that, It includes: A main body, which is the main body of the breathing device according to any one of claims 1 to 19; A water tank, which is detachably arranged on the main body.

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