Injection device

Abstract

The present invention relates to an injection device, which comprises: a container; a counting mechanism; a locking member; an injection body, which comprises a holding member and a transmission tube, and the container is screwed to the holding member; when the holding member drives the container to reciprocate axially under an external force, the transmission tube is driven to reciprocate axially through the holding member to trigger the suction of liquid and the injection body to spray, and the counting mechanism is triggered to count through the axial reciprocating movement of the container; when the last suction of liquid is completed, the locking member locks the container in the axial direction, the container locks the holding member, and the spraying cannot be triggered, and the container needs to be replaced, which can ensure the accuracy of the spraying dosage.

Description

Technical Field

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

[0002] As a drug supply device, the users have more and more requirements for the functions of the spray device. At present, in the market, some of the containers in the spray devices are double-layer structures, with the inner layer being a soft film bag. When the delivery tube draws liquid from the container, there is no reflux gas. As the number of uses increases, the soft film bag has a certain tension to resist the extraction of liquid, which can easily lead to inaccurate measurement. Therefore, in order to accurately measure, sufficient liquid must be reserved in the container to make the wrinkles of the soft film bag as small as possible, and the number of uses must be limited to ensure that there is still sufficient surplus in the container. Therefore, a counting mechanism and a locking structure must be set on the spray device. When the number of uses of the spray device reaches the preset value, the container must be locked so that the spray device can no longer be used. Summary of the invention

[0003] Based on the above-mentioned defects in the prior art, the purpose of the present invention is to provide a spraying device, after completing the last suction of liquid, the container together with the retaining member is locked by a locking member, and the spraying cannot be triggered. When the waste container is removed, the spraying body completes the last liquid supply of the waste container.

[0004] To this end, the present invention provides the following technical solutions.

[0005] The present invention provides a spraying device, the spraying device comprising:

[0006] A container for holding liquids;

[0007] A counting mechanism, which is used for counting;

[0008] Locking member;

[0009] The spraying body comprises a holding member and a conveying pipe, wherein the conveying pipe is connected to the holding member, and the container is screwed to the holding member;

[0010] Wherein, when the holding member drives the container to reciprocate along the axial direction under the external force, the holding member drives the conveying tube to reciprocate along the axial direction to trigger the conveying tube to suck liquid and trigger the spraying body to spray, and the container reciprocates along the axial direction to trigger the counting mechanism to count;

[0011] When the last suction of liquid is completed, the locking member locks the container in the axial direction, and the container locks the retaining member, and the spraying cannot be triggered; at this time, the container can be rotated away from the retaining member under external force for replacement.

[0012] Preferably, when the suction of liquid is triggered, the counting mechanism starts counting; when the injection is completed, the counting mechanism completes counting.

[0013] Preferably, the container is connected to the counting mechanism, and the locking member is located inside the counting mechanism;

[0014] When the last liquid aspiration is completed, the locking member locks the counting mechanism to lock the container.

[0015] Preferably, the counting mechanism comprises a counting assembly and an actuator, and the container is connected to the counting assembly;

[0016] When the container reciprocates along the axial direction, the relative positions of the counting assembly and the actuating member in the axial direction change, and the actuating member triggers the counting assembly to perform counting.

[0017] Preferably, the locking member is configured to prevent the counting assembly from being reset when the last aspiration of liquid is completed, so as to lock the container.

[0018] Preferably, the locking member is connected to the counting assembly, and the locking member is configured to be located at the actuating member when the last liquid aspiration is completed, thereby preventing the counting assembly from being reset through the actuating member.

[0019] Preferably, the counting assembly comprises a gear and a counting member;

[0020] When the counting assembly moves axially together with the container, the actuating member can drive the gear to rotate, and the gear drives the counting member to move by rotating, thereby achieving counting.

[0021] Preferably, the gear can drive the counting member to rotate to achieve counting; and / or,

[0022] The gear can drive the counting member to move axially to achieve counting.

[0023] Preferably, the actuating member is a cover structure, which is covered on the outer periphery of the gear, and the container passes through the actuating member to be connected to the counting assembly.

[0024] Preferably, one end of the actuating member is connected to the counting assembly via a first spring, and the first spring causes the other end of the actuating member to abut against a part of the spray body that does not move axially.

[0025] Preferably, the counting assembly further comprises a bottom shell for forming a supporting structure of the counting assembly.

[0026] Preferably, the first spring is vertically connected to the bottom shell; and / or,

[0027] The locking member comprises a connected stopper and a second spring, wherein the second spring is transversely connected to the bottom shell; one end of the stopper is connected to the second spring, and the other end is limited;

[0028] When the last suction of liquid is completed, the second spring in the compressed state rebounds, so that the other end of the blocking member is released from the limit and is pressed against by the actuating member, thereby achieving locking.

[0029] Preferably, when the last suction of liquid is completed, the other end of the blocking member is inserted between the actuating member and the bottom shell to achieve locking.

[0030] Preferably, the counting assembly further comprises a cover shell connected to the bottom shell; the cover shell is provided with a first clearance hole, and when the last suction of liquid is completed, the other end of the blocking member is inserted between the actuator and the hole wall of the first clearance hole to achieve locking.

[0031] Preferably, the counting member is movably connected to the bottom shell, and the counting member is provided with a yielding portion;

[0032] Wherein, when the locking member is in the initial position, the other end of the blocking member is limited to the counting member; when the last suction of liquid is completed, the counting member moves to the yielding portion and is free from the limit.

[0033] Preferably, one of the blocking member and the counting member is provided with a limiting protrusion, and the blocking member and the counting member are limited by the limiting protrusion.

[0034] Preferably, the counting assembly further comprises a cover shell connected to the bottom shell; the cover shell is provided with a first window and an inner wall thereof is provided with a convex shaft, and the gear is rotatably connected to the convex shaft.

[0035] Preferably, the bottom shell is provided with a supporting portion, and the locking member is clamped between the gear and the supporting portion.

[0036] Preferably, the outer wall of the cover shell is provided with a slot, and the container is buckled in the slot.

[0037] Preferably, the counting assembly further comprises a shell connected to the bottom shell and used to surround the first spring, and the shell is provided with a second window.

[0038] Preferably, the counting member is annular, and its inner wall is provided with a plurality of first protrusions arranged in sequence along its circumference; the gear is provided with a shaft, and its outer periphery is provided with a plurality of second protrusions arranged in sequence along its circumference, and the shaft is inserted into the annular area of ​​the counting member;

[0039] Wherein, the second protrusion can move the first protrusion during the rotation of the gear to drive the counting member to rotate.

[0040] Preferably, the second protrusion can intermittently move the first protrusion during the rotation of the gear.

[0041] The present invention has the following technical effects:

[0042] The present invention provides a spraying device, which is easy to operate and has a counting function. When the number of times of sucking liquid reaches a preset value, after the last sucking of liquid is completed, the locking part locks the container. Since the container and the holding part are threadedly connected, the connection between the two is relatively firm, and the container and the holding part cannot be reset and the spraying cannot be triggered. The user needs to remove the container for replacement, thereby ensuring the accuracy of the spraying dosage. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is a structural cross-sectional view of the injection device in the initial state in the first embodiment of the present invention;

[0044] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0045] Figure 3 It is a structural cross-sectional view of the injection device in the first embodiment of the present invention when the suction is completed in the liquid state;

[0046] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0047] Figure 5 An exploded view of the assembly structure of the container, the counting mechanism and the locking member in the first embodiment of the present invention;

[0048] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0049] Figure 7 is a cutaway perspective view of an actuator in a first embodiment of the present invention;

[0050] Figure 8 This is a schematic diagram of the three-dimensional structure of the bottom shell in the first embodiment of the present invention;

[0051] Fig. 9 A cutaway perspective view of the assembly structure of the counting mechanism and the locking member in the first embodiment of the present invention Figure 1 ;

[0052] Fig.10A cutaway perspective view of the assembly structure of the counting mechanism and the locking member in the first embodiment of the present invention Figure 2 ;

[0053] Fig.11 It is an exploded view of the local structure of the injection body of the present invention;

[0054] Fig.12 A partially cutaway perspective view of the spray body of the present invention Figure 1 ;

[0055] Fig.13 A partially cutaway perspective view of the spray body of the present invention Figure 2 ;

[0056] Fig.14 An exploded view of a partial assembly structure of a counting component and a locking member in a second embodiment of the present invention;

[0057] Fig.15 It is a three-dimensional diagram of the partial assembly structure of the counting component and the locking member in the second embodiment of the present invention.

[0058] Description of Reference Numerals

[0059] 100. Spray device;

[0060] 1. Container;

[0061] 2. Counting mechanism;

[0062] 21. Counting component;

[0063] 211, gear; 2111, shaft; 2112, second protrusion; 2113, screw; 2114, third guide slope; 2115, fourth guide slope; 2116, first annular groove;

[0064] 212, counting member; 2121, yielding portion; 2122, first protrusion; 2123, counting mark; 2124, first limiting groove; 2125, second screw connection portion; 2126, first abutting portion; 2127, interpenetrating portion; 21271, third limiting protrusion;

[0065] 213, bottom shell; 2131, support portion; 2132, limit arm; 21321, second clearance through hole; 2133, limit groove; 2134, second annular groove; 2135, lug; 2136, indication notch; 2137, second abutment portion;

[0066] 214, cover; 2141, first window; 2142, convex shaft; 2143, slot; 2144, first clearance through hole; 21441, bottom hole wall;

[0067] 215, housing; 2151, second window; 2152, convex portion;

[0068] 22, actuator; 221, first drive block; 2211, first guide slope; 222, second drive block; 2221, second guide slope; 223, spring seat; 224, third window;

[0069] 23. First spring;

[0070] 24. Give way;

[0071] 3. Locking member; 31. Stopping member; 311. Horizontal retaining member; 312. Vertical limiting member; 313. First limiting protrusion; 3131. Second limiting protrusion; 314. Inserting protrusion; 315. Third giving way through hole; 32. Second spring;

[0072] 4. Spray body; 41. Holding member; 411. Second guide slope; 412. First threaded portion; 42. Transfer tube; 43. First shell; 431. First guide slope; 44. Second shell; 441. Piercing structure; 45. Inner shell; 46. Blocking ring; 47. Pump assembly; 48. Return spring; 49. Button. DETAILED DESCRIPTION

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] The "upper" and "lower" mentioned in the present invention are Figure 1 The markings in shall prevail.

[0079] According to the following Figures 1 to 15 A spraying device of the present invention is described in detail.

[0080] In this embodiment, the spraying device 100 includes a container 1, a counting mechanism 2, a locking member 3 and a spraying body 4. The container 1 is used to contain liquid, and the counting mechanism 2 is used to count. The spraying body 4 includes a holding member 41 and a transmission tube 42. The transmission tube 42 is connected to the holding member 41, and the container 1 is screwed to the holding member 41.

[0081] When the holder 41 drives the container 1 to reciprocate axially under external force, the holder 41 drives the transfer tube 42 to reciprocate axially to trigger the transfer tube 42 to suck liquid and trigger the spray body 4 to spray, and the container 1 reciprocates axially to trigger the counting mechanism 2 to count.

[0082] When the number of times of sucking liquid reaches a preset value, after the last sucking of liquid is completed, the locking member 3 locks the container 1 in the axial direction; at this time, when the spraying is triggered, the container 1 locks the retaining member 41, and the spraying device 100 cannot complete the last spraying.

[0083] By adopting the above technical solution, the injection device 100 is easy to operate and has a counting function. When the number of times of sucking liquid reaches a preset value, after the last sucking of liquid is completed, the locking member 3 locks the container 1. Since the container 1 and the retaining member 41 are threadedly connected, the connection is relatively firm, and the container 1 and the retaining member 41 cannot be reset, and the injection cannot be triggered. By rotating the container 1 by external force, the container 1 can be removed from the retaining member 41 for replacement, thereby ensuring the accuracy of the injection dose. In addition, since the locking member 3 locks the container 1 when the last sucking of liquid is completed, the user's operation in the sucking stage is in place, the external force has been removed, and the locking member 3 will not be damaged by continuing to apply external force.

[0084] In one embodiment, when the liquid is sucked, the counting mechanism 2 starts counting; when the spraying is completed, the counting mechanism 2 completes counting. Specifically, during normal use of the spraying device 100, when the liquid is sucked, the retaining member 41 drives the container 1 to move in the first axial direction under the external force, which can trigger the counting mechanism 2 to count, and the conveying tube 42 completes the liquid suction. When the spraying is triggered until the spraying is completed, the retaining member 41 drives the container 1 to reset under the external force, which can trigger the counting mechanism 2 to complete the counting, and the spraying body 4 completes the spraying. That is, one reciprocating motion of the container 1 drives the counting mechanism 2 to complete one count.

[0085] In one embodiment, if Figure 1 , Figures 11 to 13 As shown, the spray body 4 further includes a first shell 43, a second shell 44, an inner shell 45, a blocking ring 46, a pump assembly 47, a return spring 48 and a button 49. The first shell 43 and the second shell 44 together constitute the outer shell structure of the spray body 4. The pump assembly 47 is fixed to the first shell 43, and the nozzle of the pump assembly 47 is arranged on the first shell 43. The return spring 48 is sleeved on the outer periphery of the container 1 and abuts against one end of the retaining member 41 facing the container 1. The inner shell 45 is clamped to the inner wall of the second shell 44 and can rotate relative to the first shell 43. The retaining member 41 can be axially movably clamped to the inner shell 45, and the blocking ring 46 is connected to the first shell 43. The inner wall of the first shell 43 is provided with a first guide inclined surface 431, and the retaining member 41 is provided with a second guide inclined surface 411.

[0086] like Figure 3 and Figure 4As shown, when the liquid is sucked, the second shell 44 is rotated, and the second shell 44 drives the inner shell 45 to rotate. Under the cooperation of the first guide slope 431 and the second guide slope 411, the rotation of the inner shell 45 can drive the retaining member 41 to rotate while moving along the first axial direction, and the return spring 48 is compressed until the retaining member 41 drives the container 1 to move to the first limit position, the second guide slope 411 disengages from the first guide slope 431, and the blocking ring 46 moves between the first shell 43 and the retaining member 41 to prevent the retaining member 41 from resetting in the reverse direction under the elastic force of the return spring 48. At this time, the injection device 100 is in a state where liquid suction is completed; it should be understood that if the user removes the external force during the rotation of the second shell 44, at this time, if the second guide slope 411 is still in a state of cooperation with the first guide slope 431, then the external force is removed, and the retaining member 41 will drive the container 1 to reset under the rebound of the return spring 48. When the spray is triggered, the button 49 needs to be pressed to move the blocking ring 46 away from between the first housing 43 and the retaining member 41. At this time, under the elastic force of the return spring 48, the retaining member 41 drives the container 1 to return to the second limit position to achieve spraying. Figure 1 and Figure 2 As shown, the injection device 100 is restored to the initial state.

[0087] When the discarded container 1 is removed, the injection device 100 is in a state where liquid suction is completed, and the blocking ring 46 is located between the first shell 43 and the retaining member 41 to prevent the retaining member 41 from resetting under the elastic force of the reset spring 48. At this time, the button 49 is pressed, and the blocking ring 46 is removed from between the first shell 43 and the retaining member 41. At this time, the retaining member 41 can drive the transfer tube 42 to reset together, so that the liquid temporarily stored in the injection body 4 can be sprayed out.

[0088] It should be understood that the first limit position and the second limit position are relative, indicating two stop positions of the container 1 during the reciprocating motion.

[0089] 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.

[0090] Furthermore, if Figure 1 As shown, the container 1 is located on the upper part of the counting mechanism 2, so that by rotating the second shell 44, the retaining member 41 drives the container 1 to move downward, triggering the suction of liquid and counting, and by pressing the button, the retaining member 41 drives the container 1 to reset upward, triggering the injection and completing the counting.

[0091] Furthermore, if Figure 1As shown, the second shell 44 is provided with a puncture structure 441, the counting mechanism 2 is provided with a make way channel 24, and the container 1 is an inner and outer two-layer structure. The puncture structure 441 is used to puncture the outer 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 for pressure compensation when the conveying tube 42 sucks liquid from the inner structure of the container 1.

[0092] In one embodiment, the inner wall of the upper portion of the retaining member 41 is provided with a second guiding inclined surface 411 , and the lower portion of the retaining member 41 is provided with a first screw connection portion 412 , which is screwed to the top of the container 1 .

[0093] In one embodiment, the container 1 is connected to the counting mechanism 2, so that the counting mechanism 2 is triggered to count by the reciprocating motion of the container 1. The locking member 3 is located in the counting mechanism 2, and when the last aspiration of liquid is completed, the locking member 3 locks the counting mechanism 2, and at the same time, the counting mechanism 2 locks the container 1, and when the discarded container 1 is removed together with the counting mechanism 2, because the container 1 is still in a state of being locked by the locking member 3, the discarded container 1 cannot be installed in place on the spray body 4.

[0094] It should be understood that, in order to facilitate the use by the user, the counting mechanism 2 is replaced together with the container 1 .

[0095] In one embodiment, if Figure 2 , Figure 4 and Figure 5 As shown, the counting mechanism 2 includes a counting assembly 21 and an actuator 22, and the container 1 is connected to the counting assembly 21. When the container 1 reciprocates along the axial direction, the container 1 drives the counting assembly 21 to move synchronously, and the relative positions of the counting assembly 21 and the actuator 22 in the axial direction change, so that the actuator 22 can trigger the counting assembly 21 to count.

[0096] Furthermore, the locking member 3 is constructed to prevent the counting assembly 21 from being reset when the last liquid aspiration is completed. Since the counting assembly 21 is connected to the container 1 , the locking member 3 locks the container 1 by locking the counting assembly 21 .

[0097] Furthermore, if Figure 2 , Figure 4 and Figure 5 As shown, the locking member 3 is connected to the counting assembly 21, and the locking member 3 is configured to be limited to the actuating member 22 when the last liquid aspiration is completed, and the counting assembly 21 is prevented from being reset by the actuating member 22. Specifically, since the actuating member 22 will not move in the resetting direction of the container 1, the locking member 3 is limited to the actuating member 22, and the counting assembly 21 is limited to the actuating member 22, so that the counting assembly 21 cannot be reset, and thus, the container 1 connected to the counting assembly 21 will not be reset.

[0098] In one embodiment, if Figure 2 , Figure 4 and Figure 5 As shown, the counting assembly 21 includes a gear 211 and a counting member 212. When the counting assembly 21 moves axially along with the container 1, the actuating member 22 can drive the gear 211 to rotate, and the gear 211 rotates to drive the counting member 212 to move, thereby realizing counting.

[0099] It should be understood that when the counting capacity requirement is small, the counting member 212 may not be provided, and a counting mark may be directly provided on the gear 211 , and counting indication is performed through the gear 211 .

[0100] It should be understood that when the number of teeth of the gear 211 meets the counting capacity requirement, the gear 211 can also serve as a locking member to lock the container 1 when the last liquid aspiration is completed. Specifically, the outer periphery of the gear 211 includes a gear tooth portion and a stopper portion (not shown in the figure). When the last liquid aspiration is completed, the gear 211 rotates until the stopper portion is locked with the actuator 22 (e.g., the drive block below) to achieve locking.

[0101] In a specific embodiment, Figure 7 As shown, the actuator 22 includes at least two driving blocks, and the at least two driving blocks are sequentially distributed along the axial direction and sequentially arranged along the circumference of the gear 211. When the counting assembly 21 reciprocates along the axial direction, the gear 211 reciprocates along the axial direction, and the driving blocks on the actuator 22 can mesh with the gear 211 alternately in sequence. Since all the driving blocks are sequentially arranged along the circumference of the gear 211, when the driving blocks at different circumferential positions mesh with the gear 211, the gear 211 can be driven to rotate. By setting at least two driving blocks and limiting the positional relationship of all the driving blocks, when the gear 211 completes an axial reciprocating motion, the actuator 22 drives the gear 211 to rotate at least one pitch angle through at least two driving blocks, thereby realizing a drive of a small rotation angle.

[0102] Furthermore, if Figure 7 As shown, the actuator 22 includes a first driving block 221 and a second driving block 222. The first driving block 221 and the second driving block 222 are distributed in sequence along the axial direction and arranged in sequence along the circumference of the gear 211. The gear 211 can be driven to rotate a pitch angle through the two driving blocks. The structure is simple and easy to process.

[0103] Of course, the number of driving blocks provided for the actuator 22 may be more than two. By limiting the positional relationship between the driving blocks and limiting the positional relationship between the driving blocks and the gear 211, the gear 211 may be driven to rotate two pitch angles or more.

[0104] Furthermore, if Figure 7 As shown, in order to facilitate the engagement between the driving block of the actuator 22 and the gear 211, a first guiding bevel 2211 is provided at one end of the first driving block 221 facing the second driving block 222, and a second guiding bevel 2221 is provided at one end of the second driving block 222 facing the first driving block 221, thereby reducing the engagement resistance and facilitating the engagement between the two driving blocks and the gear 211.

[0105] Furthermore, if Figure 6 and Figure 7 As shown, the two end faces of the gear teeth of the gear 211 are respectively provided with a third guiding bevel 2114 and a fourth guiding bevel 2115. The third guiding bevel 2114 is used to cooperate with the first guiding bevel 2211, and the fourth guiding bevel 2115 is used to cooperate with the second guiding bevel 2221, so as to further reduce the meshing resistance and facilitate the meshing of the two driving blocks with the gear 211.

[0106] The following is a specific description of the container 1 moving downward to trigger the suction of liquid. Figures 1 to 7 , Fig. 9 As shown, the first driving block 221 and the second driving block 222 are arranged in sequence from top to bottom, and the actuator 22 is located at the upper part of the gear 211. When the container 1 drives the counting assembly 21 to move downward, the gear 211 moves downward until the fourth guide slope 2115 of the first gear tooth (not marked in the figure) of the gear 211 abuts against the second guide slope 2221, and the gear 211 continues to move downward, and the gear 211 rotates downward along the second guide slope 2221 until the second driving block 222 is inserted into the first tooth groove (not marked in the figure) of the gear 211. When the container 1 drives the counting assembly 21 to move upward, the gear 211 moves upward until the third guide slope 2114 of the second gear tooth (not shown in the figure) of the gear 211 abuts against the first guide slope 2211, and the gear 211 continues to move upward, and the gear 211 rotates upward along the first guide slope 2211 until the first driving block 221 is inserted into the second tooth groove (not shown in the figure) of the gear tooth 211, and finally, the gear 211 rotates a pitch angle.

[0107] Of course, the first driving block 221 may not be provided with the first guiding bevel 2211, the second driving block 222 may not be provided with the second guiding bevel 2221, and the gear 211 may not be provided with the third guiding bevel 2114 and / or the fourth guiding bevel 2115. By limiting the projections of the first driving block 221 and the second driving block 222 on the end face of the gear 211 to not overlap or only partially overlap, it is possible to avoid the lateral spacing between the first driving block 221 and the second driving block 222 being too small, which may cause the teeth of the gear 211 to abut against the middle position of the end face of the first driving block 221 or the second driving block 222 when the first driving block 221 or the second driving block 222 moves to contact the gear 211, and finally cause the gear 211 to abut against the end face of the first driving block 221 or the second driving block 222, making the gear 211 unable to rotate.

[0108] Furthermore, if Figure 7 As shown, the drive block is integrally formed with the actuator 22 to simplify assembly.

[0109] In one embodiment, if Figure 5 and Figure 7 As shown, the actuator 22 is a cover structure, which is covered on the outer periphery of the gear 211 , and the container 1 passes through the actuator 22 to be connected to the counting assembly 21 . The actuator 22 and the counting assembly 21 are arranged compactly, which is beneficial to the miniaturized design of the spray device 100 .

[0110] Furthermore, if Figure 1 and Fig. 9 As shown, one end of the actuator 22 is connected to the counting assembly 21 through the first spring 23, and the first spring 23 makes the other end of the actuator 22 abut against the part of the injection body 4 that does not move axially, so that the actuator 22 does not move axially and the actuator 22 is easy to assemble.

[0111] In a specific embodiment, the spray body 4 is provided with a fixing member (not shown in the figure), which is located in the inner housing 45 and buckled to the inner housing 45, and is used to fix one end of the return spring 48. The other end of the actuator 22 abuts against the fixing member, and since the inner housing 45 can rotate but cannot move axially, the fixing member does not move axially either, so that the two ends of the actuator 22 are respectively abutted by the fixing member and the first spring 23, and do not move axially.

[0112] In one embodiment, if Figures 8 to 10 As shown, the counting assembly 21 further includes a bottom shell 213, and the bottom shell 213 is used to form a supporting structure of the counting assembly 21. The container 1 is located above the counting assembly 21. Figure 1 As shown, when the spray device 100 is in the initial state, the container 1 is in the second extreme position, at which time there is a gap between the bottom shell 213 and the second shell 44; Figure 4 As shown, when the spray device 100 is in the liquid suction completion state, the container 1 is in the first extreme position, at which time, the bottom shell 213 abuts against the second shell 44, and the container 1 and the counting assembly 21 cannot continue to move downward.

[0113] Furthermore, if Figure 2 As shown, the first spring 23 is vertically connected to the bottom shell 213 , the actuating member 22 is located above the bottom shell 213 , and the first spring 23 pushes the actuating member 22 upward against the fixing member of the spray body 4 .

[0114] Furthermore, if Figure 5 , Figures 8 to 10 As shown, the bottom shell 213 is provided with two lugs 2135 , the actuator 22 is provided with two spring clamps 223 , one end of the first spring 23 is clamped on the spring clamp 223 , and the other end abuts against the lug 2135 , and the actuator 22 is installed on the bottom shell 213 through the two first springs 23 .

[0115] Furthermore, if Figure 5 and Fig. 9 As shown, the housing 215 is provided with two outer protrusions 2152, and the first spring 23 is located in the outer protrusions 2152. When the housing 215 and the bottom housing 213 are assembled, the surface wall of one end of the outer protrusion 2152 abuts against the lug 2135 and is fixed by ultrasonic welding.

[0116] In one embodiment, if Figure 2 , Figure 4 and Figure 6 As shown, the locking member 3 includes a connected stopper 31 and a second spring 32, and the second spring 32 is transversely connected to the bottom shell 213; one end of the stopper 31 is connected to the second spring 32, and the other end is limited. When the last suction of liquid is completed, the second spring 32 in a compressed state rebounds, so that the other end of the stopper 31 is out of the limit and is locked by the actuator 22. In this way, since the actuator 22 will not move in the reset direction of the container 1, the stopper 31 cannot move in the reset direction of the container 1, thereby preventing the counting component 21 from resetting together with the container 1, and achieving locking. The locking member 3 has a simple structure and locks quickly.

[0117] Furthermore, in one embodiment, when the last suction of liquid is completed, the other end of the blocking member 31 is inserted between the actuating member 22 and the bottom shell 213 to achieve locking.

[0118] In another embodiment, Figure 2 , Figure 4 , Figure 5 and Fig. 9As shown, the counting assembly 21 further includes a cover 214, which is connected to the bottom shell 213. The cover 214 and the bottom shell 213 together form a cavity, and the gear 211, the locking member 3 and the counting member 212 are sequentially arranged in the cavity. Figure 5 and Fig. 9 As shown, the housing 214 is provided with a first clearance hole 2144, which is used to allow the stopper 31 to abut against the actuator 22. When the last suction of liquid is completed, the other end of the stopper 31 is inserted between the actuator 22 and the hole wall of the first clearance hole 2144 to achieve locking.

[0119] Furthermore, during assembly, the gear 211, the locking member 3 and the counting member 212 are first installed on the bottom shell 213 respectively, and then the cover shell 214 is snap-fitted with the bottom shell 213 to achieve pre-installation, and then the cover shell 214 and the bottom shell 213 are fixed by ultrasonic welding.

[0120] In one embodiment, if Figure 6 As shown, the counting member 212 is movably connected to the bottom shell 213, and the counting member 212 is provided with a yielding portion 2121. When the locking member 3 is in the initial position, the other end of the resisting member 31 is limited to the counting member 212, and by limiting the movement of the resisting member 31, the resisting member 31 is prevented from moving to abutting against the actuating member 22. When the last suction of liquid is completed, the counting member 212 moves to the yielding portion 2121 and is opposite to the other end of the resisting member 31, and the other end of the resisting member 31 can be ejected from the yielding portion 2121 by the second spring 32, and then disengages from the limit to be locked.

[0121] Furthermore, if Figure 6 As shown, the evacuation portion 2121 is a notch structure.

[0122] Furthermore, if Figure 6 As shown, the stopper 31 includes a horizontal retaining member 311 and a vertical limiting member 312 connected to each other. Figure 2 , Fig. 9 and Fig.10 As shown, one end of the transverse retaining member 311 is connected to the second spring 32, and the vertical stopper 312 is used to be pressed against by the actuator 22 for locking. Specifically, the longitudinal thickness of the transverse retaining member 311 is small, which can reduce the longitudinal space occupied by the counting component 21, and avoid causing the overall size of the injection device 100 to be too long. The actuator 22 is located above the bottom shell 213, and the longitudinal thickness of the vertical stopper 312 is long, and the structural strength is high, which prevents the blocking member 31 from bending due to excessive force of the user rotating the second shell 44, thereby affecting the locking effect.

[0123] In one embodiment, one of the stopper 31 and the counting member 212 is provided with a limiting protrusion, and the stopper 31 and the counting member 212 are in contact with each other by means of the limiting protrusion, thereby reducing the contact area therebetween, achieving the limiting function while reducing the friction therebetween, which is beneficial for the smooth movement of the counting member 212 to achieve counting.

[0124] In a specific embodiment, Figure 2 and Figure 6 As shown, the blocking member 31 is provided with a first limiting protrusion 313, which abuts against the inner wall of the counting member 212 to limit the blocking member 31. When the counting member 212 rotates until the yielding portion 2121 is aligned with the first limiting protrusion 313, the blocking member 31 can be disengaged from the limiting position of the counting member 212.

[0125] Furthermore, if Figure 6 As shown, the inner wall of the counting member 212 is provided with a first annular limiting groove 2124, and the first limiting protrusion 313 is provided with a second limiting protrusion 3131, and the second limiting protrusion 3131 is inserted into the first limiting groove 2124, which can improve the stability of the limiting between the two. The first limiting groove 2124 is connected to the yielding portion 2121, and when the second limiting protrusion 3131 rotates along the first limiting groove 2124 to the position of the yielding portion 2121, the second limiting protrusion 3131 is separated from the limiting of the first limiting groove 2124, that is, the blocking member 31 is separated from the limiting of the counting member 212.

[0126] Furthermore, if Figure 2 and Figure 6 As shown, the first limiting protrusion 313 is disposed on a surface of the transverse holding member 311 facing the counting member 212 , and the vertical limiting member 312 is located outside the counting member 212 .

[0127] In one embodiment, if Figure 8 As shown, the bottom shell 213 is provided with a supporting portion 2131 , and the locking member 3 is sandwiched between the gear 211 and the supporting portion 2131 . The locking member 3 is easy to assemble.

[0128] In one embodiment, if Figure 5 As shown, the housing 214 is provided with a first window 2141, and the first window 2141 is used to observe the current counting status of the counting member 212. The inner wall of the housing 214 is provided with a convex shaft 2142, and the gear 211 is rotatably connected to the convex shaft 2142.

[0129] Furthermore, if Figure 2 and Figure 5As shown, the outer wall of the cover 214 is provided with a slot 2143, and the container 1 is buckled in the slot 2143, so that the container 1 and the counting mechanism 2 can be processed and assembled separately, which is convenient for processing and assembly. Of course, the assembly method of the container 1 and the cover 214 is not limited to this, and can also be screwed, fastened or other any assembly method. Of course, the container 1 and the cover 214 can also be an integrally formed structure.

[0130] In one embodiment, if Figure 5 and Fig. 9 As shown, the counting assembly 21 further includes a housing 215, which is connected to the bottom housing 213 and is used to surround the first spring 23 to improve the appearance of the counting assembly 21. The housing 215 is provided with a second window 2151, and the second window 2151 is used to observe the current counting status of the counting member 212. In a specific embodiment, the housing 215 surrounds the cover 214, and the second window 2151 is opposite to the first window 2141.

[0131] Furthermore, if Figure 5 As shown, the actuator 22 is provided with a third window 224. When the spray device 100 is in an initial state, the third window 224, the second window 2151 and the first window 2141 are positioned opposite to each other in sequence.

[0132] In one embodiment, if Figure 6 As shown, the gear 211 can drive the counting member 212 to rotate, and the counting member 212 rotates to indicate a new counting result to the user, thereby realizing counting.

[0133] In a specific embodiment, Figure 6 As shown, the counting member 212 is annular, and its inner wall is provided with a plurality of first protrusions 2122 arranged in sequence along its circumference. The gear 211 is provided with a shaft 2111, and its outer periphery is provided with a plurality of second protrusions 2112 arranged in sequence along its circumference, and the shaft 2111 is inserted into the annular area of ​​the counting member 212. When the gear 211 rotates, the second protrusions 2112 rotate together with the gear 211, and then the first protrusions 2122 can be moved to drive the counting member 212 to rotate.

[0134] Furthermore, the second protrusion 2112 can intermittently move the first protrusion 2122 during the rotation of the gear 211. For example, every time the gear 211 rotates 10 times, the second protrusion 2112 moves the first protrusion 2122 once, and the counting member 212 rotates once, so that the counting capacity can be increased.

[0135] Furthermore, if Figure 2 and Figure 6 As shown, the gear 211 is provided with a first annular groove 2116, and the convex shaft 2142 of the housing 214 is engaged with the first annular groove 2116. Figure 2and Figure 8 As shown, the bottom shell 213 is provided with a second annular groove 2134 , and the shaft 2111 of the gear 211 is engaged with the second annular groove 2134 , and the gear 211 is assembled through the cover shell 214 and the bottom shell 213 .

[0136] Furthermore, the blocking member 31 is provided with a third clearance through hole for the shaft body 2111 to pass through.

[0137] In one embodiment, if Figure 8 As shown, the bottom shell 213 is provided with a limiting arm 2132 , and the limiting arm 2132 is used to circumferentially wrap the counting member 212 to limit the radial movement of the counting member 212 .

[0138] Furthermore, if Figure 2 and Figure 8 As shown, the bottom shell 213 is provided with a limiting groove 2133, one end of the second spring 32 is connected to the limiting groove 2133, and the other end is sleeved on the plug-in protrusion 314 of the stopper 31. The setting of the limiting groove 2133, on the one hand, plays a role in positioning the assembly of the second spring 32, and on the other hand, can limit the second spring 32 from detaching from the bottom shell 213.

[0139] Furthermore, if Figure 8 As shown, the limiting groove 2133 is provided on the limiting arm 2132 .

[0140] In one embodiment, if Figures 4 to 6 and Figure 8 As shown, the limiting arm 2132 is provided with a second clearance hole 21321, and one end of the stopper 31, the first clearance hole 2144 and the second clearance hole 21321 are positioned opposite to each other in sequence. When the last suction of liquid is completed, that is, when the last suction of liquid is completed, the counting member 212 rotates to the point where the clearance portion 2121 is opposite to the second clearance hole 21321. At this time, the side wall of the actuator 22 is located directly above the first clearance hole 2144, and one end of the stopper 31 passes through the second clearance hole 21321 and is stuck between the end surface of the actuator 22 and the bottom hole wall 21441 of the first clearance hole 2144 to achieve locking.

[0141] Furthermore, when the blocking member 31 is limited by the counting member 212 , one end of the blocking member 31 is partially inserted into the second clearance through hole 21321 to limit the movement of the blocking member 31 along the circumferential direction of the gear 211 .

[0142] In a specific embodiment, Figure 6 As shown, the vertical limit member 312 is opposite to the second clearance hole 21321. When the last suction of liquid is completed, the vertical limit member 312 is inserted into the second clearance hole 21321 and is stuck between the end surface of the actuator 22 and the bottom hole wall 21441.

[0143] In one embodiment, if Figure 5 As shown, the outer wall of the counting member 212 is provided with counting marks 2123, and the counting marks 2123 include but are not limited to text marks, scale marks or digital marks.

[0144] Furthermore, if Figure 6 As shown, the bottom shell 213 is provided with an indicating notch 2136. When the counting member 212 is installed on the bottom shell 213, the initial position of the counting mark 2123 is aligned with the indicating notch 2136, which plays a role of pre-installation positioning.

[0145] Second embodiment

[0146] According to the following Figure 14 to Figure 15 A spray device according to a second embodiment of the present invention will be described.

[0147] The structure of the injection device of this embodiment is substantially the same as that of the injection device of the first embodiment, and the differences are mainly described below.

[0148] In this embodiment, if Fig.14 and Fig.15 As shown, the gear 211 can drive the counting member 212 to move axially to achieve counting.

[0149] In one embodiment, if Fig.14 As shown, the gear 211 is provided with a screw rod 2113, and the counting member 212 is screwed to the screw rod 2113 in a non-rotatable manner; when the gear 211 rotates, the counting member 212 moves linearly along the screw rod 2113 to achieve counting.

[0150] Furthermore, if Fig.14 As shown, the counting member 212 includes a second threaded portion 2125 and a first abutting portion 2126, and the second threaded portion 2125 is used to be threadedly connected to the screw rod 2113. Fig.15 As shown, the bottom shell 213 is provided with a second abutting portion 2137, which abuts against the first abutting portion 2126 to limit the counting member 212 from rotating along with the screw rod 2113. In this way, when the screw rod 2113 rotates, the counting member 212 can only move linearly.

[0151] In one embodiment, if Fig.14 As shown, the locking member 3 is located above the counting member 212, so that when the spray device 100 is in use, the counting member 212 moves downward to achieve counting.

[0152] In one embodiment, if Fig.14 As shown, the outer wall of the counting member 212 is provided with a counting mark 2123, and the counting mark 2123 includes a plurality of color areas, and fuzzy counting is performed through different colors.

[0153] In one embodiment, if Fig.14 As shown, the blocking member 31 is provided with a third clearance through hole 315, and the screw rod 2113 is inserted into the third clearance through hole 315. The counting member 212 is provided with an insertion portion 2127, and the insertion portion 2127 is inserted into the third clearance through hole 315; the insertion portion 2127 is provided with a third limiting protrusion 21271, and the third limiting protrusion 21271 abuts against the hole wall of the third clearance through hole 315 to limit the blocking member 31. When the last suction of liquid is completed, the counting member 212 moves until the third limiting protrusion 21271 is disengaged from the third clearance through hole 315, and the blocking member 31 is disengaged from the limit, so that it is pressed to death by the actuating member 22 in the reset direction, thereby locking the container 1.

[0154] 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) for counting; Locking member (3); The spraying body (4) comprises a holding member (41) and a conveying pipe (42), wherein the conveying pipe (42) is connected to the holding member (41), and the container (1) is screwed to the holding member (41); Wherein, when the holding member (41) drives the container (1) to reciprocate in the axial direction under the external force, the holding member (41) drives the conveying tube (42) to reciprocate in the axial direction to trigger the conveying tube (42) to suck liquid and trigger the spray body (4) to spray, and the container (1) to reciprocate in the axial direction to trigger the counting mechanism (2) to count; When the last suction of liquid is completed, the locking member (3) locks the container (1) in the axial direction, and the container (1) locks the retaining member (41), making it impossible to trigger the spraying; at this time, the container (1) can be rotated away from the retaining member (41) under external force for replacement.

2. The spraying device according to claim 1, characterized in that When the suction of liquid is triggered, the counting mechanism (2) starts counting; when the spraying is completed, the counting mechanism (2) completes counting.

3. The spraying device according to claim 1, characterized in that The container (1) is connected to the counting mechanism (2), and the locking member (3) is located inside the counting mechanism (2); When the last aspiration of liquid is completed, the locking member (3) locks the counting mechanism (2) to lock the container (1).

4. The spraying device according to any one of claims 1 to 3, characterized in that: The counting mechanism (2) comprises a counting component (21) and an actuating member (22), and the container (1) is connected to the counting component (21); When the container (1) reciprocates along the axial direction, the relative positions of the counting component (21) and the actuating member (22) in the axial direction change, and the actuating member (22) triggers the counting component (21) to perform counting.

5. The spraying device according to claim 4, characterized in that The locking member (3) is configured to prevent the counting assembly (21) from being reset when the last liquid aspiration is completed, so as to lock the container (1).

6. The spraying device according to claim 5, characterized in that The locking member (3) is connected to the counting assembly (21), and the locking member (3) is configured to be located at the actuating member (22) when the last liquid aspiration is completed, thereby preventing the counting assembly (21) from being reset through the actuating member (22).

7. The spraying device according to claim 4, characterized in that The counting assembly (21) comprises a gear (211) and a counting member (212); When the counting component (21) moves axially together with the container (1), the actuating member (22) can drive the gear (211) to rotate, and the gear (211) drives the counting member (212) to move by rotating, thereby achieving counting.

8. The spraying device according to claim 7, characterized in that The gear (211) can drive the counting member (212) to rotate to achieve counting; and / or, The gear (211) can drive the counting member (212) to move axially to achieve counting.

9. The spraying device according to claim 7, characterized in that: The actuating member (22) is a cover structure, which is covered on the outer periphery of the gear (211), and the container (1) passes through the actuating member (22) to be connected to the counting component (21).

10. The spraying device according to claim 7, characterized in that One end of the actuating member (22) is connected to the counting assembly (21) via a first spring (23), and the first spring (23) causes the other end of the actuating member (22) to abut against a part of the spraying body (4) that does not move axially.

11. The spraying device according to claim 10, characterized in that The counting component (21) further comprises a bottom shell (213) for forming a supporting structure of the counting component (21).

12. The spraying device according to claim 11, characterized in that The first spring (23) is vertically connected to the bottom shell (213); and / or, The locking member (3) comprises a connected stopper (31) and a second spring (32), wherein the second spring (32) is transversely connected to the bottom shell (213); one end of the stopper (31) is connected to the second spring (32), and the other end is limited; When the last liquid suction is completed, the second spring (32) in a compressed state rebounds, causing the other end of the blocking member (31) to break away from the limit and be pressed against by the actuating member (22), thereby achieving locking.

13. The spraying device according to claim 12, characterized in that When the last suction of liquid is completed, the other end of the blocking member (31) is inserted between the actuating member (22) and the bottom shell (213) to achieve locking.

14. The spraying device according to claim 12, characterized in that The counting assembly (21) further comprises a cover shell (214) connected to the bottom shell (213); the cover shell (214) is provided with a first clearance hole (2144); when the last suction of liquid is completed, the other end of the blocking member (31) is inserted between the actuating member (22) and the hole wall of the first clearance hole (2144) to achieve locking.

15. The spraying device according to claim 12, characterized in that The counting member (212) is movably connected to the bottom shell (213), and the counting member (212) is provided with a yielding portion (2121); Wherein, when the locking member (3) is in the initial position, the other end of the blocking member (31) is limited to the counting member (212); when the last suction of liquid is completed, the counting member (212) moves to the yielding portion (2121) and is free from the limit.

16. The spraying device according to claim 12, characterized in that One of the stopper (31) and the counting member (212) is provided with a limiting protrusion, and the stopper (31) and the counting member (212) are limited by the limiting protrusion.

17. The spraying device according to claim 11, characterized in that The counting assembly (21) further comprises a cover shell (214) connected to the bottom shell (213); the cover shell (214) is provided with a first window (2141) and an inner wall thereof is provided with a convex shaft (2142), and the gear (211) is rotatably connected to the convex shaft (2142).

18. The spraying device according to claim 17, characterized in that The bottom shell (213) is provided with a supporting portion (2131), and the locking member (3) is sandwiched between the gear (211) and the supporting portion (2131).

19. The spraying device according to claim 17, characterized in that The outer wall of the cover shell (214) is provided with a slot (2143), and the container (1) is buckled into the slot (2143).

20. The spraying device according to claim 12, characterized in that The counting assembly (21) further comprises a housing (215) which is connected to the bottom housing (213) and is used to surround the first spring (23); the housing (215) is provided with a second window (2151).

21. The spraying device according to claim 8, characterized in that The counting member (212) is annular, and its inner wall is provided with a plurality of first protrusions (2122) sequentially arranged along its circumference; the gear (211) is provided with a shaft (2111), and its outer periphery is provided with a plurality of second protrusions (2112) sequentially arranged along its circumference; the shaft (2111) is inserted into the annular region of the counting member (212); Wherein, the second protrusion (2112) can move the first protrusion (2122) during the rotation of the gear (211), so as to drive the counting member (212) to rotate.

22. The spraying device according to claim 21, characterized in that The second protrusion (2112) can intermittently move the first protrusion (2122) during the rotation of the gear (211).

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