Injection device

Abstract

The present invention relates to an ejection device comprising: a container for containing a liquid; the counting mechanism comprises an actuating piece and a counting assembly, and the container is connected to the counting assembly; a locking member; the spraying main body comprises a liquid conveying piece; under driving of external force, the container can apply acting force to the counting assembly in the axial direction, so that the relative positions of the actuating piece and the counting assembly in the axial direction are changed, and then the container can drive the counting assembly to reciprocate in the axial direction so as to trigger the liquid conveying piece to suck liquid, trigger the spraying body to spray and trigger the counting assembly to count; and when the counting times reach a preset value, the spraying main body completes spraying, the locking piece is constructed to be capable of limiting the change of the relative position so as to lock the container, and the container can be replaced. According to the spraying device, the locking piece locks the container by limiting the change of the relative positions of the actuating piece and the counting assembly in the axial direction, damage to the outer shell of the spraying body is avoided, and it is guaranteed that the spraying body can be repeatedly used.

Description

Technical Field

[0001] The present invention relates to the field of medical machinery, in particular to a spray device. Background Art

[0002] As a drug delivery device, the user's requirements for the function of the spray device are increasing. At present, some spray devices on the market have a counting function, and when the number of times the spray device is used reaches a preset value, the container is locked, so that the spray device can no longer be used.

[0003] For example, patent CN1118215443A discloses a sprayer, an indicator device and a container. When pressurizing, the outer shell is rotated, and the outer shell drives the internal part to rotate, and the internal part drives the holder to rotate together with the container. Since the holder cooperates with the inclined surface of the upper shell part, the holder moves axially downward together with the container. When reaching the lower limit position, the blocking component moves between the holder and the upper shell part, and the blocking holder is reset to complete pressurization. When spraying, the button is pressed, and the blocking component moves away from between the holder and the upper shell part. Under the reset elastic force of the driving spring, the holder and the container are reset to complete spraying. During the pressurization process, the container moves downward together with the indicator component, and the driving part of the outer shell is inserted into the indicator component; during the spraying process, the container moves upward together with the indicator component, and the driving part of the outer shell withdraws from the indicator component. At this time, the actuating part of the actuating component pushes the gear of the transmission device to rotate one tooth pitch to complete counting. The counting process occurs in the spraying stage. When the number of times the sprayer is used reaches a preset value, the outer shell is rotated, and the container moves downward together with the indicator assembly until the driving portion of the outer shell is blocked by the blocking portion blocking the opening at the bottom of the indicator assembly. The retaining part and the container cannot continue to move downward, and the pressurization cannot continue, thereby locking the container. At this time, the outer shell continues to be rotated, and the driving portion and the blocking portion of the outer shell are squeezed against each other, and the driving portion of the outer shell may be damaged, causing the spray device to be scrapped. Summary of the invention

[0004] Based on the above-mentioned defects in the prior art, an object of the present invention is to provide a spray device, in which a locking member locks the container by limiting the change of the relative position of the actuator and the counting assembly in the axial direction, thereby avoiding damage to the outer shell of the spray body and ensuring that the spray body can be reused.

[0005] To this end, the present invention provides the following technical solutions.

[0006] The present invention provides a spraying device, the spraying device comprising:

[0007] A container for holding liquids;

[0008] a counting mechanism, comprising an actuating member and a counting assembly, the container being connected to the counting assembly;

[0009] Locking member;

[0010] The spray body includes an infusion part;

[0011] Wherein, under the drive of external force, the container can exert an action force on the counting component in the axial direction, so that the relative position of the actuating member and the counting component in the axial direction changes, and then the container can drive the counting component to reciprocate along the axial direction, so as to trigger the infusion member to suck liquid, trigger the spray body to spray, and trigger the counting component to count;

[0012] When the counted number reaches a preset value, the spraying body completes the spraying, and the locking member is configured to limit the change of the relative position to lock the container, and the container can be replaced.

[0013] Preferably, the locking member is located within the counting mechanism.

[0014] Preferably, the spray body comprises a connecting piece and a first outer shell, and the infusion piece and the container are respectively connected to the connecting piece;

[0015] When an external force rotates the first outer shell, the connecting member can be driven to drive the infusion member and the container to move along the axial direction.

[0016] Preferably, when the locking member is locked, the first end of the counting mechanism facing away from the container is pressed against the first outer shell of the spray body, or a distance is left between the first end and the first outer shell, and the distance cannot meet the requirement of the container to trigger the completion of liquid suction through axial movement.

[0017] Preferably, the first outer shell of the injection body is arranged to surround the counting mechanism; one end of the actuator is axially movably connected to the counting assembly;

[0018] When the liquid suction is triggered, the relative position changes under the abutment of the first outer shell; when the spraying is triggered, the relative position changes in the opposite direction.

[0019] Preferably, the counting assembly comprises a driving member, a rotating member, a first spring and a counting member, one end of the first spring is connected to an end of the rotating member facing away from the driving member, and the other end is in a stopped state;

[0020] Wherein, when the container is in the initial position, the rotating member is engaged with the driving member;

[0021] When the liquid suction is triggered, the actuating member pushes the rotating member to move axially, and the rotating member is disengaged from the driving member and then meshes with the actuating member;

[0022] When the injection is triggered, the rotating member moves axially in the reverse direction and disengages from the rotating member and then engages with the driving member, so that the rotating member rotates by at least one pitch angle of the driving member. The rotating member drives the counting member to move for counting by rotating.

[0023] Preferably, one of the actuating member and the driving member is disposed around the other.

[0024] Preferably, the actuating member is provided with a gear portion; the driving member is provided with a plurality of first protruding teeth, the plurality of first protruding teeth are sequentially arranged along the circumference of the driving member, a tooth groove is formed between two adjacent first protruding teeth, and the rotating member is provided with a second protruding tooth;

[0025] Wherein, when the container is in the initial position, the second protruding tooth is engaged with the tooth groove and is at least partially opposite to the gear tooth portion in the axial direction.

[0026] Preferably, one end of the actuating member is inserted into the driving member, and a first limiting block is provided on an outer wall of the actuating member; the first limiting block is movably engaged with the tooth groove.

[0027] Preferably, the driving member is constructed as a bottom shell structure of the counting assembly.

[0028] Preferably, the counting assembly comprises a shaft body, and the rotating member is axially movably connected to the shaft body; the rotating member drives the counting member to move by driving the shaft body to rotate.

[0029] Preferably, the counting assembly comprises a planetary gear set, and the rotational driving force of the shaft is transmitted to the counting member through the planetary gear set.

[0030] Preferably, the counting assembly comprises a housing provided with a convex shaft and an inner gear ring; the shaft body is rotatably connected to the convex shaft, and the planetary gears of the planetary gear set are meshed with the inner gear ring.

[0031] Preferably, the planetary gear set comprises meshing planetary gears and a sun gear; the counting member is provided with counting marks and an eccentric shaft, the sun gear is coaxially connected to the shaft body, and the planetary gear is coaxially connected to the eccentric shaft.

[0032] Preferably, the housing is provided with a clamping portion for clamping the container.

[0033] Preferably, the locking member is configured to lock the rotating member in the axial direction when the counted number reaches a preset value, so as to lock the container.

[0034] Preferably, the counting member is a cover structure, and the rotating member and the locking member are both located inside the counting member;

[0035] The locking member is configured to be inserted between the rotating member and the counting member when the counted number reaches a preset value, so as to lock the rotating member in the axial direction.

[0036] Preferably, the locking member is an elastic structure, which is provided with a first limiting protrusion; the inner wall of the counting member is provided with a second limiting protrusion, which is provided with a clearance notch;

[0037] When the count times do not reach the preset value, the first limit protrusion abuts against the outer wall of the second limit protrusion; when the count times reaches the preset value, the clearance notch moves to be opposite to the first limit protrusion and gives way, and the locking member is clamped between the rotating member and the counting member under its own elastic force.

[0038] Preferably, the injection body comprises an inner shell, which comprises a first inner shell and a second inner shell; the connecting member is axially movably connected to the first inner shell, and the second inner shell is detachably connected to the first outer shell;

[0039] Wherein, when the first outer shell is not disassembled, the first inner shell and the second inner shell are in a connected state, and at this time, the first outer shell is rotated by an external force, and the connecting member can be driven to move axially through the rotation of the first inner shell;

[0040] When the first outer shell is removed, the second inner shell is separated from the first inner shell. At this time, the second inner shell is rotated by an external force, but the first inner shell does not rotate.

[0041] Preferably, the inner housing comprises an intermediate member and a second spring;

[0042] Wherein, when the first outer shell is not disassembled, the middle piece clamps the first inner shell and the second inner shell, and the second spring presses the middle piece against the first outer shell;

[0043] When the first outer shell is removed, the second spring rebounds to make the middle piece separate from the first inner shell.

[0044] Preferably, the intermediate piece comprises an annular portion and a clamping block, the annular portion is sleeved on the first inner shell or the second inner shell; the first inner shell is provided with a first notch, and the second inner shell is provided with a second notch;

[0045] Wherein, when the first outer shell is not disassembled, the clamping block is respectively clamped in the first notch and the second notch; when the first outer shell is disassembled, the second spring rebounds to make the clamping block disengage from the first notch.

[0046] The present invention has the following technical effects:

[0047] The present invention provides a spraying device, which is easy to operate and has a counting function, and improves the counting mechanism. The counting mechanism can change the relative position of the actuator and the counting assembly in the axial direction, so that the container can reciprocate in the axial direction, thereby making the spraying device in a usable state. In addition, when the count number reaches a preset value, after the last spraying is completed, the locking member limits the change of the relative position of the actuator and the counting assembly in the axial direction to lock the container, thereby avoiding damage to the outer shell of the spraying body and ensuring that the spraying body can be reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is an enlarged cross-sectional view of the structure of the injection device of the present invention when it is in an initial state;

[0049] Figure 2 It is a cross-sectional view of the assembly structure of the container of the present invention, the counting mechanism and the locking member when the container is in the initial position;

[0050] Figure 3 It is an enlarged cross-sectional view of the structure of the spray device of the present invention when it is in a state where liquid suction is completed;

[0051] Figure 4 It is a schematic diagram of the assembly structure of the container of the present invention and the counting mechanism when the container is in the first extreme position;

[0052] Figure 5 It is an exploded view of the assembly structure of the counting mechanism and the locking member of the present invention;

[0053] Figure 6 A partial cutaway view of the assembly structure of the counting mechanism and the locking member when the injection device of the present invention is in the initial state Figure 1 ;

[0054] Figure 7 A partial cutaway view of the assembly structure of the counting mechanism and the locking member when the injection device of the present invention is in the initial state Figure 2

[0055] Figure 8 It is a partial cutaway view of the assembly structure of the counting mechanism and the locking member when the spray device of the present invention is in a state of sucking liquid;

[0056] Fig. 9A partial cutaway view of the assembly structure of the counting mechanism and the locking member when the injection device of the present invention is in the initial state Figure 3 ;

[0057] Fig.10 It is a three-dimensional structural schematic diagram of the rotating member of the present invention;

[0058] Fig.11 It is a schematic diagram of the three-dimensional structure of the housing of the present invention;

[0059] Fig.12 A bottom view of a counting member of the present invention;

[0060] Fig.13 It is a cutaway view of the assembly structure when the counting mechanism and the locking member of the present invention are in an unlocked relationship;

[0061] Fig.14 It is a cutaway view of the assembly structure when the counting mechanism and the locking member of the present invention are in a locked relationship;

[0062] Fig.15 It is a partial cutaway view of the counting mechanism of the present invention;

[0063] Fig.16 It is a structural sectional view of the counting mechanism of the present invention.

[0064] Description of Reference Numerals

[0065] 100. Spray device;

[0066] 1. Container;

[0067] 2. Counting mechanism;

[0068] 21. Actuating member; 211. Gear portion; 212. First limiting block; 213. Annular groove;

[0069] 22. Counting component;

[0070] 221, driving member; 2211, first protruding tooth; 22111, first inclined surface; 2212, tooth groove; 2213, slot;

[0071] 222, rotating member; 2221, second protruding tooth; 22211, second inclined surface; 2222, first hollow channel; 2223, second limiting block; 2224, first boss; 2225, third boss;

[0072] 223, first spring;

[0073] 224, counting member; 2241, counting mark; 2242, eccentric shaft; 2243, second limiting protrusion; 22431, giving way notch; 2244, second hollow channel;

[0074] 225, shaft body; 2251, limiting groove; 2252, second boss;

[0075] 226, planetary gear set; 2261, planetary gear; 2262, sun gear;

[0076] 227, housing; 2271, convex shaft; 2272, inner gear ring; 2273, clamping part; 2274, window;

[0077] 23. Give way;

[0078] 3. Locking member; 31. First limiting protrusion; 32. Connecting section; 321. Hook;

[0079] 4. Spray body; 41. Infusion piece; 42. Connector; 421. Second guide slope; 43. First outer shell; 431. Piercing structure; 44. Inner shell; 45. Pump assembly; 46. Return spring; 47. Button; 48. Second outer shell; 481. First guide slope; 49. Blocking ring. DETAILED DESCRIPTION

[0080] In order to make the technical solutions and beneficial effects of the present invention more clearly understood, the following is a detailed description by listing specific embodiments. Unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application belongs.

[0081] In the description of the present invention, unless otherwise explicitly defined, terms such as “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “height”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of simplified description of the present invention, and do not indicate that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and should not be understood as a limitation on the present invention.

[0082] In the present invention, the terms "first" and "second" are only used for the purpose of clear description and cannot be understood as the relative importance of the indicated features or the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly include at least one of the features. In the description of the present invention, "multiple" means at least two; "several" means at least one, unless otherwise clearly defined.

[0083] In the present invention, unless otherwise clearly defined, the terms "install", "connect", "connect", "fix", "set", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral molding; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0084] In the present invention, unless otherwise clearly defined, a first feature being “on”, “above”, “above”, “below”, “below”, “below” or “below” a second feature may mean that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact with each other through an intermediate medium. Moreover, a first feature being “on”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than the horizontal height of the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0085] The "upper" and "lower" mentioned in the present invention are Figure 3 The markings in shall prevail.

[0086] According to the following Figures 1 to 16 The injection device of the present invention will be described in detail.

[0087] In this embodiment, if Figure 3 As shown, the spray device 100 includes a container 1, a counting mechanism 2, a locking member 3 and a spray body 4. The container 1 is used to contain liquid; the counting mechanism 2 is used to count, and the counting mechanism 2 includes an actuating member 21 and a counting assembly 22. The container 1 is connected to the counting assembly 22. The spray body 4 includes an infusion member 41, which is used to suck liquid from the container 1 and spray it through a pump assembly 45.

[0088] like Figures 1 to 4 As shown, under the drive of external force, the container 1 can exert an axial force on the counting component 22, so that the relative position of the actuator 21 and the counting component 22 in the axial direction changes, that is, the counting component 22 can move axially relative to the actuator 21, and then the container 1 can drive the counting component 22 to reciprocate along the axial direction. Among them, the axial reciprocating movement of the container 1 can trigger the infusion part 41 to suck liquid and trigger the spray body 4 to spray; the change of the relative position of the actuator 21 and the counting component 22 in the axial direction can trigger the counting component 22 to count.

[0089] When the counting times reaches a preset value, the locking member 3 is constructed to limit the change in the relative position of the actuator 21 and the counting assembly 22 in the axial direction, and the axial movement of the container 1 is limited by limiting the counting assembly 22, so as to lock the container 1. At this time, the spray body 4 completes the spraying, thereby locking the spray device 100, and the user cannot continue to use the spray device 100. At this time, the container 1 can be replaced and the spray device 100 can be reused.

[0090] By adopting the above technical solution, the spray device 100 is easy to operate and has a counting function, and the counting mechanism 2 is improved. The counting mechanism 2 can change the relative position of the actuator 21 and the counting assembly 22 in the axial direction, so that the container 1 can reciprocate in the axial direction, thereby making the spray device 100 in a usable state. In addition, when the number of counts reaches a preset value, after the last spraying is completed, the locking member 3 limits the change of the relative position of the actuator 21 and the counting assembly 22 in the axial direction to lock the container 1, avoid damage to the outer shell of the spray body 4, and ensure that the spray body 4 can be reused.

[0091] It should be understood that, for the convenience of the user, when replacing the container 1, the counting mechanism 2 is replaced together. Of course, it is also possible to only replace the container 1 and re-enable the counting mechanism 2 by resetting the counting mechanism 2.

[0092] In one embodiment, the spray device 100 sprays a mist-like object.

[0093] In one embodiment, if Figure 3 As shown, the infusion piece 41 is an infusion tube.

[0094] In one embodiment, if Figures 2 to 4 As shown, the container 1 is located above the counting mechanism 2. The container 1 drives the counting mechanism 2 to move downward under external force to trigger the infusion part 41 to suck liquid; the container 1 drives the counting mechanism 2 to reset upward to trigger the spray body 4 to spray. When a liquid is sucked and sprayed, the counting mechanism 2 triggers a count by moving.

[0095] In one embodiment, if Figure 1 As shown, the locking member 3 is located inside the counting mechanism 2. Of course, the position of the locking member 3 is not limited thereto, and the locking member 3 can also be arranged outside the counting mechanism 2.

[0096] In one embodiment, if Figure 3As shown, the spray body 4 includes a connecting member 42 and a first outer shell 43, and the infusion member 41 and the container 1 are respectively connected to the connecting member 42. When an external force rotates the first outer shell 43 (such as manual rotation), the rotational force of the first outer shell 43 can be transmitted to the connecting member 42, and the connecting member 42 can drive the infusion member 41 and the container 1 to move axially.

[0097] In a specific embodiment, Figure 3 As shown, the spray body 4 includes an infusion part 41, a connector 42, a first outer shell 43, an inner shell 44, a pump assembly 45, a return spring 46, a button 47, a second outer shell 48 and a blocking ring 49. The second outer shell 48 is located above the first outer shell 43. The first outer shell 43 and the second outer shell 48 together constitute the outer shell structure of the spray body 4. The pump assembly 45 is fixed in the second outer shell 48, the nozzle of the pump assembly 45 is arranged on the second outer shell 48, the return spring 46 is sleeved on the outer periphery of the container 1 and abuts against one end of the connector 42 facing the container 1. The inner shell 44 is clamped to the first outer shell 43 and can rotate at least partially relative to the second outer shell 48. The connector 42 is clamped to the inner shell 44 axially movable, and the blocking ring 49 is connected to the second outer shell 48. The inner wall of the second outer shell 48 is provided with a first guide slope, and the connector 42 is provided with a second guide slope.

[0098] When the suction of liquid is triggered, the first outer shell 43 is rotated, and the first outer shell 43 drives the inner shell 44 to rotate. Under the cooperation of the first guide slope 481 and the second guide slope 421, the rotation of the inner shell 44 can drive the connecting member 42 to rotate and move downward, and the return spring 46 is compressed. Figure 3 As shown, until the connecting member 42 drives the container 1 and the counting mechanism 2 to move to the first extreme position, the second guide slope 421 disengages from the first guide slope 481, and the blocking ring 49 moves to between the second outer shell 48 and the connecting member 42 to prevent the connecting member 42 from resetting under the rebound force of the reset spring 46. At this time, the injection device 100 is in a liquid suction completion state.

[0099] When the spray is triggered, the button 47 needs to be pressed to move the blocking ring 49 away from between the second outer shell 48 and the connecting member 42. At this time, under the rebound force of the return spring 46, the Figure 1 As shown, the connecting member 42 drives the container 1 and the counting mechanism 2 to reset to the second extreme position (initial position), thereby achieving spraying, and the spraying device 100 returns to the initial state.

[0100] It should be understood that if the user removes the force during the process of rotating the first outer shell 43, at this time, if the second guide bevel 421 is still in a state of matching with the first guide bevel 481, then after the external force is removed, the connecting member 42 will drive the container 1 and the counting mechanism 2 to reset under the rebound force of the reset spring 46.

[0101] It should be understood that the first limit position and the second limit position are relative, indicating two stop positions of the connecting member 42 and / or the container 1 and / or the counting mechanism 2 during the reciprocating motion.

[0102] It should be understood that the internal structure and operating principle of the injection body 4 may refer to any existing structure that can achieve the above functions.

[0103] Furthermore, if Figure 1 As shown, the first outer shell 43 is provided with a puncture structure 431, the counting mechanism 2 is provided with a yield channel 23, and the container 1 is an inner and outer two-layer structure. The puncture structure 431 is used to puncture the outer layer structure of the container 1 when the injection device 100 is used for the first time to form an air vent on the container 1. The air vent is used to perform pressure compensation when the infusion piece 41 sucks liquid from the inner layer structure of the container 1.

[0104] In one embodiment, if Figures 1 to 4 As shown, when the container 1 moves under external force to trigger the suction of liquid, the actuator 21 is constructed to be able to be inserted into the counting assembly 22, and the relative position of the actuator 21 and the counting assembly 22 in the axial direction becomes smaller, which can allow the container 1 to move axially; and when the container 1 is reset to trigger the injection, the actuator 21 is constructed to be able to retract, and the relative position of the actuator 21 and the counting assembly 22 in the axial direction is restored to the initial state.

[0105] In one embodiment, if Figure 1 As shown, the first outer shell 43 of the spray body 4 surrounds the counting mechanism 2; the actuator 21 is located on the side of the counting assembly 22 facing away from the container 1, and one end of the actuator 21 is axially movably connected to the counting assembly 22. The other end of the actuator 21 can abut against the first outer shell 43, or there can be a gap between the first outer shell 43. Specifically, as Figure 1 and Figure 3 As shown, the container 1 is located above the counting mechanism 2 as an example for specific description. At this time, the actuator 21 is located below the counting assembly 22. When the liquid is sucked, the container 1 drives the counting mechanism 2 to move downward, and the first outer shell 43 contacts the actuator 21. Since the inner wall of the first outer shell 43 applies an upward abutting force to the bottom of the actuator 21, the counting assembly 22 moves downward while the actuator 21 does not move downward, and the relative position of the actuator 21 and the counting assembly 22 in the axial direction changes, thereby triggering the suction of liquid and counting. When the spray is triggered, the button 47 is pressed, and the container 1 drives the counting assembly 22 to move upward to reset, and the relative position of the actuator 21 and the counting assembly 22 in the axial direction changes in the opposite direction, and the counting mechanism 2 completes the counting.

[0106] It should be understood that the first outer shell 43 is a transparent member or a partially transparent member or is provided with a window so as to observe the counting result of the counting mechanism 2 .

[0107] In one embodiment, the end of the actuator 21 facing away from the container 1 serves as the first end of the counting mechanism 2. Figure 1 As shown, when the container 1 is in the initial position, there is a gap between the actuating member 21 and the first outer shell 43. When the liquid is sucked, the container 1 drives the counting assembly 22 and the actuating member 21 to move downward for a distance, the actuating member 21 abuts against the first outer shell 43, and the container 1 drives the counting assembly 22 to continue to move downward, which can trigger the liquid to be sucked. Figure 1 and Fig.14 As shown, when the locking member 3 is locked, if the user rotates the first outer shell 43 again, due to the existence of the spacing, the container 1 can drive the counting mechanism 2 to make an axial movement of a smaller distance, but the size of the spacing is limited, and the infusion member 41 can suck a small amount of liquid, but it is not enough to trigger the completion of sucking the liquid. At this time, the second guide bevel 421 is still in a state of matching with the first guide bevel 481. After the external force is removed, the connecting member 42 drives the container 1 to reset, and the injection device 100 sprays or emits a small amount of liquid, which cannot form a mist.

[0108] In another embodiment, when the container 1 is in the initial position, the actuator 21 is in contact with the first outer shell 43 (not shown in the figure). Specifically, taking the container 1 located above the counting mechanism 2 as an example, when the liquid is sucked, the container 1 drives the counting assembly 22 to move downward, at which time, the bottom of the actuator 21 is pressed by the first outer shell 43 and cannot move downward; when the injection is triggered, the container 1 drives the counting assembly 22 to move upward, and the actuator 21 moves upward under its own gravity without moving with the counting assembly 22 until the container 1 is reset to the initial position. During the entire reciprocating motion of the container 1, the axial position of the actuator 21 does not change. When the locking member 3 is locked, since the actuator 21 is in contact with the first outer shell 43, the counting mechanism 2 cannot move downward, and then the container 1 cannot move downward, and the infusion member 41 cannot suck liquid from the container 1 again, thereby achieving locking.

[0109] Furthermore, the end of the actuating member 21 facing away from the container 1 is flat, which is beneficial for uniform force between the actuating member 21 and the first outer shell 43 when they are in contact.

[0110] In one embodiment, if Figure 1 , Figure 5 and Fig.13As shown, the counting assembly 22 includes a driving member 221, a rotating member 222, a first spring 223 and a counting member 224. One end of the first spring 223 is connected to one end of the rotating member 222 facing away from the driving member 221, and the other end is in a stopped state. When the container 1 is in the initial position, the rotating member 222 is engaged with the driving member 221 under the pressure of the first spring 223.

[0111] like Figures 1 to 4 As shown, the container 1 is located above the counting mechanism 2 and there is a gap between the bottom of the actuating member 21 and the first outer shell 43 in the initial state as an example for specific explanation.

[0112] like Figure 1 , Figure 6 , Figure 8 and Fig. 9 As shown, when the suction of liquid is triggered, the container 1 drives the counting mechanism 2 to move downward. When the actuator 21 is abutted by the first outer shell 43, the actuator 21 stops moving downward, while the counting assembly 22 continues to move downward. The rotating member 222 of the counting assembly 22 moves downward until it abuts against the tooth surface of the actuator 21. The actuator 21 pushes the rotating member 222 upward, so that the rotating member 222 disengages from the driving member 221. At this time, under the downward elastic force of the first spring 223, the rotating member 222 engages with the actuator 21 downward along the tooth surface of the actuator 21, and the rotating member 222 rotates by a first angle.

[0113] like Figure 8 and Fig. 9 As shown, when the spray is triggered, the container 1 drives the counting assembly 22 to move upward, that is, the rotating member 222 of the counting assembly 22 moves upward relative to the actuating member 21 until the rotating member 222 is separated from the actuating member 21. At this time, under the downward elastic force of the first spring 223 and because the driving member 221 moves upward, the driving member 221 pushes the rotating member 222 upward, and the rotating member 222 moves along the tooth surface of the driving member 221 until the two are engaged, and the rotating member 222 rotates a second angle. In this way, during one reciprocating motion of the container 1, the rotating member 222 rotates twice in total, and the rotation angle is the sum of the first angle and the second angle, that is, the rotating member 222 rotates at least one pitch angle of the driving member 221, and the rotating member 222 drives the counting member 224 to move for counting by rotating.

[0114] In the present solution, the counting mechanism 2 has a simple and compact structure. By changing the relative positions of the rotating member 222 and the actuator 21 in the axial direction, during one reciprocating motion of the container 1, the rotating member 222 can alternately engage with the driving member 221 and the actuator 21, thereby driving the rotating member 222 to rotate at least one pitch angle of the driving member 221. The mechanical coordination is simple and the rotation angle can be precisely controlled.

[0115] Furthermore, if Figure 1 and Figure 8 As shown, one of the actuator 21 and the driving member 221 is arranged around the other, which is beneficial to reducing the overall size of the counting mechanism 2. In a specific embodiment, the driving member 221 is an annular structure, which is arranged around the actuator 21, and the bottom of the actuator 21 extends out from the bottom of the driving member 221 and abuts against the inner wall of the first outer shell 43.

[0116] In a specific embodiment, Figure 5 , Figure 6 , Figures 8 to 10 As shown, the actuator 21 is provided with a gear portion 211; the driving member 221 is provided with a plurality of first protruding teeth 2211, all of which are arranged in sequence along the circumference of the driving member 221, and a tooth groove 2212 is formed between two adjacent first protruding teeth 2211; and the rotating member 222 is provided with a second protruding tooth 2221. Fig. 9 As shown, when the container 1 is in the initial position, the second protruding teeth 2221 are engaged with the tooth grooves 2212, and the second protruding teeth 2221 are at least partially opposite to the gear teeth 211 in the axial direction, so that when the axial position of the rotating member 222 relative to the actuating member 21 changes, the second protruding teeth 2221 can contact the gear teeth 211. It should be understood that the number of the second protruding teeth 2221 can be two, three, four, five or even more, and preferably, all the second protruding teeth 2221 are evenly spaced and arranged along the circumference of the rotating member 222.

[0117] Specifically, the container 1 is located above the counting mechanism 2 as an example for detailed description.

[0118] like Fig. 9 As shown, when the container 1 is in the initial position, the second protruding tooth 2221 is engaged in a tooth groove 2212 .

[0119] like Figure 8 As shown, when the suction of liquid is triggered, the rotating member 222 moves downward until the second protruding tooth 2221 abuts against the gear tooth portion 211 of the actuating member 21, and the gear tooth portion 211 pushes the rotating member 222 upward. At the same time, the driving member 221 continues to move downward, and finally, the rotating member 222 disengages from the driving member 221, and then the rotating member 222 engages with the gear tooth portion 211, and the rotating member 222 rotates a first angle.

[0120] When the injection is triggered, the rotating member 222 moves upward until the second protruding tooth 2221 disengages from the gear portion 211. At this time, under the downward elastic force of the first spring 223, the rotating member 222 tends to move downward, and the second protruding tooth 2221 abuts against the first protruding tooth 2211 of the upward moving driving member 221, and the driving member 221 continues to move upward. Finally, the second protruding tooth 2221 engages with another tooth groove 2212 of the driving member 221, and the rotating member 222 rotates to a second angle.

[0121] Furthermore, if Fig. 9 As shown, when the container 1 is in the initial position, the second convex tooth 2221 is engaged with the tooth groove 2212, and at the same time, the second convex tooth 2221 is against the tooth surface of the gear portion 211. In this way, when the container 1 moves downward until the actuator 21 contacts the first outer shell 43, the gear portion 211 of the actuator 21 can immediately push the rotating member 222 upward, thereby shortening the movement distance of the counting component 22, which is beneficial to the miniaturized design of the counting mechanism 2.

[0122] Furthermore, when the container 1 is in the first extreme position, at this time, the injection device 100 is in a liquid suction completion state, the second convex tooth 2221 is engaged with the gear portion 211, and at the same time, the second convex tooth 2221 is against the tooth surface of the first convex tooth 2211 (not shown in the figure), so that when the container 1 moves upward to trigger the injection, the first convex tooth 2211 of the driving member 221 can immediately push the second convex tooth 2221 upward, so that the second convex tooth 2221 is disengaged from the gear portion 211, thereby shortening the movement distance of the counting component 22, which is conducive to the miniaturization design of the counting mechanism 2.

[0123] Furthermore, if Figure 8 As shown, the first protruding tooth 2211 is provided with a first inclined surface 22111 , and the second protruding tooth 2221 is provided with a second inclined surface 22211 . The first inclined surface 22111 and the second inclined surface 22211 match each other so that the second protruding tooth 2221 is meshed with the tooth groove 2212 .

[0124] In one embodiment, if Figure 6 As shown, one end of the actuator 21 is inserted into the driving member 221 , and a first limit block 212 is provided on the outer wall of the actuator 21 ; the first limit block 212 is movably engaged with the tooth groove 2212 , and the tooth groove 2212 limits the rotation of the actuator 21 relative to the rotating member 222 .

[0125] In one embodiment, if Figure 5 and Fig.13 As shown, the driving member 221 is constructed as a bottom shell structure of the counting assembly 22 , which is beneficial to the miniaturized design of the counting mechanism 2 .

[0126] In one embodiment, if Figure 1 , Figure 5 and Fig. 9 As shown, the counting assembly 22 includes a shaft body 225 , a rotating member 222 is axially movably connected to the shaft body 225 , a counting member 224 is connected to the shaft body 225 , and the rotating member 222 drives the shaft body 225 to rotate to drive the counting member 224 to move.

[0127] Furthermore, if Figure 5 and Fig.10As shown, the outer wall of the shaft body 225 is provided with a limit groove 2251 extending in the axial direction, the rotating member 222 is provided with a first hollow channel 2222, and a second limit block 2223 is provided in the first hollow channel 2222. The shaft body 225 extends into the first hollow channel 2222, and the second limit block 2223 is movably engaged with the limit groove 2251, so that the rotating member 222 can drive the shaft body 225 to rotate together through the cooperation of the second limit block 2223 and the limit groove 2251. At the same time, the rotating member 222 can also move along the shaft body 225, so that when the liquid is sucked, the rotating member 222 can move axially relative to the driving member 221 and disengage from the driving member 221, and when the spray is triggered, the rotating member 222 can move axially relative to the actuator 21 and disengage from the actuator 21. Of course, the arrangement positions of the limiting groove and the second limiting block are not limited thereto. The limiting groove may also be arranged on the rotating member 222 , and the second limiting block may be arranged on the shaft body 225 .

[0128] Furthermore, if Figure 5 , Fig.10 and Fig.13 As shown, the first hollow channel 2222 is provided with a first boss 2224, and the outer periphery of the shaft body 225 is provided with a second boss 2252. The first spring 223 is sleeved on the outer axis of the shaft body 225, and the two ends of the first spring 223 are respectively abutted against the first boss 2224 and the second boss 2252. The surface wall of the first hollow channel 2222 can also limit the circumferential movement of the first spring 223.

[0129] In one embodiment, if Figure 5 and Fig.15 As shown, the counting assembly 22 includes a planetary gear set 226. The rotational driving force of the shaft 225 is transmitted to the counting member 224 through the planetary gear set 226. The counting member 224 is driven to rotate by the planetary gear set 226 to achieve counting, thereby increasing the counting capacity.

[0130] Furthermore, if Figure 5 , Fig.11 , Fig.15 and Fig.16 As shown, the counting assembly 22 includes a housing 227 , which is provided with a convex shaft 2271 and an inner gear ring 2272 ; the shaft body 225 is rotatably connected to the outer periphery of the convex shaft 2271 , and the planetary gear 2261 of the planetary gear set 226 is meshed with the inner gear ring 2272 .

[0131] Furthermore, if Figure 5 , Fig.11 , Fig.15 and Fig.16As shown, the planetary gear set 226 includes meshing planetary gears 2261 and sun gears 2262; the counting member 224 is provided with a counting mark 2241 and an eccentric shaft 2242, the sun gear 2262 is coaxially connected to the shaft 225, and the planetary gear 2261 is coaxially connected to the eccentric shaft 2242. When the rotating member 222 rotates, the shaft 225 rotates synchronously, the shaft 225 drives the sun gear 2262 to rotate, and the planetary gear 2261 transmits the rotational force to the eccentric shaft 2242, and finally drives the counting member 224 to rotate, and the user obtains the counting result by observing the changes in the counting mark 2241.

[0132] Furthermore, if Figure 5 As shown, the counting member 224 is provided with a second hollow channel 2244 , the eccentric shaft 2242 is located on a surface of the counting member 224 facing away from the rotating member 222 , the sun gear 2262 is located at one end of the shaft body 225 , and the shaft body 225 extends into the second hollow channel 2244 so that the sun gear 2262 is meshed with the planetary gear 2261 .

[0133] Furthermore, the shaft body 225 and the sun gear 2262 are integrally formed to simplify assembly. Of course, the structural relationship between the two is not limited to this, and they can also be assembled by fastening, welding, clamping or buckling.

[0134] Of course, the counting assembly 22 may not be provided with the planetary gear set 226. For example, the counting member 224 may be driven to rotate directly by the shaft 225 to realize counting. Of course, the counting assembly 22 may not be provided with the shaft 225 and the planetary gear set 226. A counting mark may be directly provided on the rotating member 222 to form a counting member, and the counting member may move axially and rotate during the counting process.

[0135] In one embodiment, if Figure 5 , Fig.13 and Fig.15 As shown, the housing 227 is a cover structure, the driving member 221 is used as the bottom shell structure of the counting assembly 22, the housing 227 is connected to the driving member 221, and the two are connected to form a cavity, and the housing 227 is provided with a window 2274, and the window 2274 is used to observe the counting mark 2241. The driving member 221 is an annular structure, and the actuator 21 is inserted into the annular region of the driving member 221 from the bottom of the driving member 221. The actuator 21 is provided with an annular groove 213, and the gear portion 211 is located on the end surface of the annular groove 213. The rotating member 222 partially extends into the annular groove 213, and the second protruding tooth 2221 of the rotating member 222 is at least partially opposite to the gear portion 211 in the axial direction.

[0136] In one embodiment, if Figure 1 and Figure 5As shown, the housing 227 is provided with a snap-fit ​​portion 2273 for snap-fitting the container 1 , so as to facilitate quick assembly of the counting mechanism 2 and the container 1 .

[0137] In one embodiment, the locking member 3 is configured to axially lock the rotating member 222 when the count times reaches a preset value, so that the counting assembly 22 cannot move axially, thereby limiting the axial movement of the container 1 and preventing the liquid from being sucked again.

[0138] Furthermore, if Figure 1 As shown, the counting member 224 is a cover structure, the rotating member 222 and the locking member 3 are both located in the counting member 224, and the rotating member 222 is located between the actuating member 21 and the counting member 224. For example, the container 1 is located above the counting mechanism 2. Fig.13 and Fig.14 As shown, the locking member 3 is constructed to be stuck between the rotating member 222 and the counting member 224 when the counting number reaches a preset value. At this time, the injection body 4 completes the last injection. Since the first outer shell 43 can press upward against the actuating member 21, the actuating member 21 presses upward against the rotating member 222, and the rotating member 222 presses upward against the counting member 224 through the locking member 3, the counting assembly 22 cannot move downward. In this way, when the bottom of the actuating member 21 is stopped by the first outer shell 43, the counting mechanism 2 cannot move downward, and thus cannot complete the suction of liquid.

[0139] Furthermore, if Figure 7 As shown, the locking member 3 is an elastic structure, which is provided with a first limiting protrusion 31; Fig.12 As shown, the inner wall of the counting member 224 is provided with a second limiting protrusion 2243 which is provided with a clearance notch 22431 .

[0140] When the counted times do not reach the preset value, the first limiting protrusion 31 abuts against the outer wall of the second limiting protrusion 2243 to limit the locking member 3 from being stuck between the rotating member 222 and the counting member 224. Fig.13 As shown, there is an axial gap between the rotating member 222 and the counting member 224 to allow the rotating member 222 to move axially, so that the counting assembly 22 can move axially relative to the actuating member 21. In this way, the container 1 connected to the counting assembly 22 can also move axially smoothly, and the injection device 100 can be used normally.

[0141] When the counted times reaches the preset value, the clearance notch 22431 moves to be opposite to the first limiting protrusion 31 and gives way, and the first limiting protrusion 31 is separated from the limiting position of the second limiting protrusion 2243. At this time, under the elastic force of the locking member 3, the first limiting protrusion 31 enters the clearance notch 22431, and the locking member 3 is clamped between the rotating member 222 and the counting member 224. Fig.14As shown, by locking the rotating member 222 in the axial direction, the counting assembly 22 is locked in the axial direction, and the injection device 100 cannot be used any more.

[0142] Furthermore, if Fig.10 As shown, the end of the rotating member 222 facing the counting member 224 is provided with a third boss 2225. Fig.14 As shown, when the locking member 3 is inserted between the rotating member 222 and the counting member 224, one surface wall of the locking member 3 abuts against the second limiting protrusion 2243, and the other surface wall abuts against the third boss 2225, so as to lock the rotating member 222 in the axial direction. In this way, the contact area between the locking structure 3 and the rotating member 222 and the counting member 224 is large, and the locking structure 3 is not easily damaged, so that the user is prevented from forcibly unlocking the lock by damaging the locking structure 3.

[0143] In one embodiment, if Figure 5 and Figure 7 As shown, the locking member 3 includes a connecting section 32, one end of the connecting section 32 is provided with a hook 321, and the first limiting protrusion 31 is located at the other end of the connecting section 32; Figure 7 and Figure 8 As shown, the driving member 221 is the bottom shell structure of the counting assembly 22 . The driving member 221 is provided with a slot 2213 . The hook 321 is engaged with the slot 2213 to assemble the locking member 3 to the driving member 221 .

[0144] Furthermore, if Figure 7 As shown, the cross section of the connecting section 32 is in an arc shape with a simple structure, and the end surfaces on both sides of the connecting section 32 respectively abut against the second limiting protrusion 2243 and the rotating member 222, so that the force is more stable.

[0145] Furthermore, the locking member 3 is a metal spring sheet with high structural strength and is not easily damaged.

[0146] It should be understood that the above embodiments are exemplary and are not intended to include all possible implementations included in the claims. Various modifications and changes may be made on the basis of the above embodiments without departing from the scope of the present disclosure. Similarly, the various technical features of the above embodiments may be arbitrarily combined to form other embodiments of the present invention that may not be explicitly described. Therefore, the above embodiments only express several implementations of the present invention and do not limit the scope of protection of the patent of the present invention.

Claims

1. A spraying device, characterized in that: The injection device (100) comprises: A container (1) for containing a liquid; A counting mechanism (2), comprising an actuating member (21) and a counting assembly (22), wherein the container (1) is connected to the counting assembly (22); Locking member (3); A spray body (4), which includes an infusion piece (41); Wherein, under the drive of an external force, the container (1) can exert an action force on the counting component (22) in the axial direction, so that the relative position of the actuating member (21) and the counting component (22) in the axial direction changes, and then the container (1) can drive the counting component (22) to reciprocate in the axial direction, so as to trigger the infusion member (41) to suck liquid and trigger the spray body (4) to spray, and trigger the counting component (22) to count; When the counted number reaches a preset value, the spraying body (4) completes spraying, and the locking member (3) is configured to limit the change in the relative position so as to lock the container (1), and the container (1) can be replaced.

2. The spraying device according to claim 1, characterized in that The locking member (3) is located inside the counting mechanism (2).

3. The spraying device according to claim 1, characterized in that The spray body (4) comprises a connecting piece (42) and a first outer shell (43), and the infusion piece (41) and the container (1) are respectively connected to the connecting piece (42); When an external force rotates the first outer shell (43), the connecting member (42) can be driven to drive the infusion member (41) and the container (1) to move in the axial direction.

4. The spraying device according to claim 1, characterized in that When the locking member (3) is locked, the first end of the counting mechanism (2) facing away from the container (1) is pressed against the first outer shell (43) of the spray body (4), or a distance is left between the first end and the first outer shell (43), and the distance is insufficient for the container (1) to complete the liquid suction by triggering the axial movement.

5. The spraying device according to any one of claims 1 to 4, characterized in that: The first outer shell (43) of the spray body (4) is arranged to surround the counting mechanism (2); one end of the actuating member (21) is axially movably connected to the counting assembly (22); When the suction of liquid is triggered, the relative position changes under the abutment of the first outer shell (43); when the injection is triggered, the relative position changes in the opposite direction.

6. The spraying device according to claim 5, characterized in that The counting assembly (22) comprises a driving member (221), a rotating member (222), a first spring (223) and a counting member (224); one end of the first spring (223) is connected to an end of the rotating member (222) facing away from the driving member (221), and the other end is in a stopped state; Wherein, when the container (1) is in an initial position, the rotating member (222) is engaged with the driving member (221); When the liquid suction is triggered, the actuating member (21) pushes the rotating member (222) to move axially, and the rotating member (222) is disengaged from the driving member (221) and then meshes with the actuating member (21); When the spraying is triggered, the rotating member (222) moves axially in the reverse direction and disengages from the rotating member (222) and then engages with the driving member (221), so that the rotating member (222) rotates at least one tooth pitch angle of the driving member (221), and the rotating member (222) drives the counting member (224) to move for counting by rotating.

7. The spraying device according to claim 6, characterized in that One of the actuating member (21) and the driving member (221) is arranged around the other.

8. The spraying device according to claim 6, characterized in that The actuating member (21) is provided with a gear portion (211); the driving member (221) is provided with a plurality of first protruding teeth (2211), the plurality of first protruding teeth (2211) are sequentially arranged along the circumference of the driving member (221), a tooth groove (2212) is formed between two adjacent first protruding teeth (2211), and the rotating member (222) is provided with a second protruding tooth (2221); Wherein, when the container (1) is in the initial position, the second protruding tooth (2221) is engaged with the tooth groove (2212) and is at least partially opposite to the gear tooth portion (211) in the axial direction.

9. The spraying device according to claim 8, characterized in that One end of the actuating member (21) is inserted into the driving member (221), and a first limiting block (212) is provided on the outer wall of the actuating member (21); the first limiting block (212) is movably engaged with the tooth groove (2212).

10. The spraying device according to claim 6, characterized in that The driving member (221) is constructed as a bottom shell structure of the counting component (22).

11. The spraying device according to claim 6, characterized in that The counting assembly (22) comprises a shaft (225), and the rotating member (222) is axially movably connected to the shaft (225); the rotating member (222) drives the shaft (225) to rotate, thereby driving the counting member (224) to move.

12. The spraying device according to claim 11, characterized in that The counting assembly (22) comprises a planetary gear set (226), and the rotational driving force of the shaft (225) is transmitted to the counting member (224) via the planetary gear set (226).

13. The spraying device according to claim 12, characterized in that The counting assembly (22) comprises a housing (227) provided with a convex shaft (2271) and an inner gear ring (2272); the shaft body (225) is rotatably connected to the convex shaft (2271), and the planetary gear (2261) of the planetary gear set (226) is meshed with the inner gear ring (2272).

14. The spraying device according to claim 12, characterized in that The planetary gear set (226) includes meshing planetary gears (2261) and a sun gear (2262); the counting member (224) is provided with a counting mark (2241) and an eccentric shaft (2242); the sun gear (2262) is coaxially connected to the shaft body (225); and the planetary gear (2261) is coaxially connected to the eccentric shaft (2242).

15. The spraying device according to claim 13, characterized in that The housing (227) is provided with a clamping portion (2273) for clamping the container (1).

16. The spraying device according to claim 6, characterized in that The locking member (3) is configured to lock the rotating member (222) in the axial direction when the counted number reaches a preset value, so as to lock the container (1).

17. The spraying device according to claim 16, characterized in that The counting member (224) is a cover structure, and the rotating member (222) and the locking member (3) are both located inside the counting member (224); The locking member (3) is configured to be inserted between the rotating member (222) and the counting member (224) when the number of counts reaches a preset value, so as to lock the rotating member (222) in the axial direction.

18. The spraying device according to claim 17, characterized in that The locking member (3) is an elastic structure, and is provided with a first limiting protrusion (31); the inner wall of the counting member (224) is provided with a second limiting protrusion (2243), and is provided with a clearance notch (22431); When the number of counts does not reach a preset value, the first limiting protrusion (31) abuts against the outer wall of the second limiting protrusion (2243); when the number of counts reaches a preset value, the clearance notch (22431) moves to be opposite to the first limiting protrusion (31) and gives way, and the locking member (3) is clamped between the rotating member (222) and the counting member (224) under its own elastic force.

Images