Counting locking device

Abstract

The utility model discloses a counting locking device which comprises an upper shell, a main rotating body, a locking piece and a counting assembly, the inner wall of the upper shell is provided with a concave part, the main rotating body is rotatably connected with the upper shell, the outer wall of the main rotating body is provided with a straight-through groove, the two sides of the straight-through groove are respectively provided with a clamping block, the locking piece is rotatably arranged in the straight-through groove, and the counting assembly is connected with the locking piece. A torsion spring is arranged at the rotating position of the locking piece, the counting assembly is arranged on the outer wall of the main rotating body and comprises a push arm capable of moving in the axial direction of the device, when the counting function of the device is normal, the locking piece is pressed in the straight-through groove through the clamping block, and when the counting function fails, the push arm can promote the locking piece to be separated from the clamping block and clamped into the concave portion under the action of the torsion spring. Therefore, relative rotation of the upper shell and the main rotating body is limited. According to the counting locking device, the stability and reliability of the locking function of the device are improved by improving the mounting structure of the locking piece, the torsional spring is adopted to provide elasticity for the locking piece, the elasticity validity period is long, and it can be guaranteed that the locking piece makes full contact with the concave part.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to a counting and locking device. Background Art

[0002] With the aggravation of environmental pollution, the increase of oral and respiratory diseases is becoming more and more serious. For the above-mentioned disease problems, inhalation administration provided by a nebulizer is a relatively optimal treatment method.

[0003] At present, the main body of a portable nebulizer on the market is mainly composed of an upper shell and a main rotating body. Every half turn of the upper shell relative to the main rotating body will trigger a spray. Limited by the service life of the device or meeting requirements such as hygiene and safety, designers hope that the nebulizer can be permanently locked after using a certain dose of container or reaching a certain number of actuations. A blocking device is shown in the US Patent with publication number US7396341B2. This device ejects a reed from a stationary position, and under the action of elastic deformation, part of the reed is caught in a recess of the upper shell, thereby restricting the rotation of the main rotating body to achieve the purpose of locking the device.

[0004] In the actual use process, it is found that due to external factors such as bumps and vibrations, there is a certain probability that the reed slides out from the stationary position, resulting in the device being locked in advance without meeting the preset requirements, thus affecting the use of patients. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a counting and locking device, which improves the stability and reliability of the locking function of the device by improving the installation structure of the locking member.

[0006] The purpose of the utility model is achieved by the following technical solutions:

[0007] A counting and locking device, comprising:

[0008] An upper shell, on the inner wall of which there is a recess;

[0009] A main rotating body, rotatably connected to the upper shell, on the outer wall of which there is a through slot, and on both sides of the through slot there are respective clamping blocks;

[0010] A locking member, rotatably arranged in the through slot, and at the rotation part of the locking member there is a torsion spring;

[0011] A counting component, arranged on the outer wall of the main rotating body, and the counting component includes a push arm that can move along the axial direction of the device;

[0012] When the device counting function is normal, the locking member is pressed by the clamping block into the straight-through groove. When the counting function fails, the push arm can prompt the locking member to separate from the clamping block and snap into the recess under the action of the torsion spring, thereby restricting the relative rotation between the upper housing and the main rotating body.

[0013] In some embodiments, the width dimension of the recess is greater than the width dimension of the locking member, and the length dimension of the recess is greater than the length dimension of the portion of the locking member that snaps in.

[0014] In some embodiments, the number of the recesses is two, and they are symmetrically distributed at 180° on the inner wall of the upper housing.

[0015] In some embodiments, a notch is provided at one end of the straight-through groove away from the counting component, and the rotation point of the locking member is located within the notch.

[0016] In some embodiments, a first spring groove is provided on the straight-through groove, a second spring groove is provided on the locking member, and both ends of the torsion spring are respectively arranged in the first spring groove and the second spring groove.

[0017] In some embodiments, fitting grooves are provided on both sides of the locking member, and the fitting grooves have inclined contact surfaces;

[0018] The radial cross-section of the clamping block is arc-shaped, and the clamping block abuts and cooperates with the contact surface.

[0019] In some embodiments, the counting component further includes a screw rod connected to the main rotating body and a slider moving along the screw rod;

[0020] A tooth groove is further provided on the inner wall of the upper housing, and the tooth groove is used to drive the screw rod to rotate, thereby driving the slider to move to realize the counting function.

[0021] In some embodiments, a triggering unit is provided at one end of the screw rod close to the main rotating body, and the triggering unit includes a first triggering portion and a second triggering portion that are vertically crossed;

[0022] Wherein, the first triggering portion is used to engage with the tooth groove, and the second triggering portion is used to abut against the inner wall of the upper housing but not contact the tooth groove.

[0023] In some embodiments, the number of the tooth grooves is one or 2N, where N is a positive integer.

[0024] In some embodiments, a first mounting portion and a second mounting portion are sequentially arranged along the axial direction on the outer wall of the main rotating body, and the screw rod is respectively rotatably connected to the first mounting portion and the second mounting portion;

[0025] A limiting part is arranged on the screw rod and is close to the second mounting part, and is used for restricting the axial movement of the screw rod itself.

[0026] Compared with the prior art, the beneficial effects of the present utility model at least include:

[0027] 1. By improving the installation structure of the locking part, the stability and reliability of the locking function of the device are improved.

[0028] 2. A torsion spring is adopted to provide elastic force for the locking part, and the elastic effective period is long, which can ensure that the locking part is in full contact with the concave part. Description of the Drawings

[0029] Figure 1 is a schematic structural diagram of the counting and locking device of the present utility model.

[0030] Figure 2 is an exploded schematic diagram of the counting and locking device of the present utility model.

[0031] Figure 3 is a schematic structural diagram of the inner wall of the upper shell of the present utility model.

[0032] Figure 4 is a schematic structural diagram of the outer wall of the main rotor of the present utility model.

[0033] Figure 5 is an installation schematic diagram of the torsion spring in the present utility model.

[0034] Figure 6 is a matching schematic diagram of the locking part and the clamping block of the present utility model.

[0035] In the figure: 1. Upper shell; 11. Concave part; 12. Tooth groove;

[0036] 2. Main rotor; 21. Straight through groove; 22. Clamping block; 23. Notch; 24. First spring groove; 25. First mounting part; 26. Second mounting part;

[0037] 3. Locking part; 31. Second spring groove; 32. Fitting groove; 321. Contact surface;

[0038] 4. Torsion spring;

[0039] 5. Counting component; 51. Pushing arm; 52. Screw rod; 521. Limiting part; 53. Slide block; 54. Touching unit; 541. First touching part; 542. Second touching part. Detailed Embodiment

[0040] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this utility model will be more complete and comprehensive, and the concept of the example embodiments will be fully conveyed to those skilled in the art. Like reference numerals in the figures denote the same or similar structures, and thus their repetitive description will be omitted.

[0041] In this utility model, the words describing position and direction are illustrated by taking the accompanying drawings as examples, but can be changed according to needs, and all changes made are included within the protection scope of this utility model.

[0042] See Figures 1 to 6 As shown, this utility model discloses a counting and locking device, which is used to count the number of times of use of an atomizer and lock the atomizer to limit its use after the counting is completed.

[0043] The counting and locking device includes an upper housing 1, a main rotating body 2, a locking member 3, and a counting component 5. Among them, both the upper housing 1 and the main rotating body 2 are generally cylindrical structures, and the top part of the main rotating body 2 is inserted into the bottom area of the upper housing 1, and they are rotatably connected therebetween. It should be noted that for every 180° rotation of the upper housing 1 relative to the main rotating body 2, the atomizer will release a spray once, which is the prior art and will not be described in detail here.

[0044] As Figure 2 and Figure 3 shown, a recess 11 is provided on the inner wall of the upper housing 1, and the recess 11 faces the top part of the main rotating body 2 and is used to form a locking structure with the unfolded locking member 3. In this application, the number of recesses 11 is two, and they are symmetrically distributed at 180° on the inner wall of the upper housing 1 to effectively cooperate with the spray release of the atomizer.

[0045] As Figure 2 and Figure 4 shown, a through slot 21 is provided on the outer wall of the main rotating body 2, and the slot extends straight to the top of the main rotating body 2 to facilitate product molding (the through-type structure has relatively lower molding difficulty and cost). In addition, a clamping block 22 is provided on each side of the through slot 21 to press the locking member 3 to make it stationary in the slot.

[0046] As Figure 4 and Figure 5As shown, the locking member 3 is generally a plate-like structure, and has a protruding snap-in portion at the bottom thereof, which is protruding outward to form a hook-shaped structure to cooperate with the recess 11. The locking member 3 is rotatably arranged in the straight groove 21, and a torsion spring 4 is arranged at the rotation point of the locking member 3 to provide power for the locking member 3 to flip and unfold. In the present application, an axis can be arranged on the side wall of the straight groove 21, and one end of the locking member 3 is sleeved on the axis, or an axis can be arranged on both sides of the locking member 3, and the axis can be inserted into the side wall of the straight groove 21, so that the locking member 3 is rotatably fixed in the straight groove 21.

[0047] like Figure 2 and Figure 4 As shown, the counting assembly 5 is arranged on the outer wall of the main rotor 2, and includes a push arm 51 that can move along the axial direction of the device. As the number of counts increases, the push arm 51 will gradually move toward the locking member 3 until it is inserted between the locking member 3 and the through groove 21, so that the locking member 3 is separated from the block 22.

[0048] When the counting function of the counting locking device is normal, the push arm 51 does not contact the locking member 3, and the locking member 3 is pressed into the straight groove 21 by the clamping block 22, and the torsion spring 4 is in a compressed state. As the number of counts increases, the push arm 51 gradually approaches the locking member 3, and when the counting function fails, the push arm 51 is inserted between the locking member 3 and the straight groove 21, so that the locking member 3 is released from the clamping of the clamping block 22, and is clamped into the recess 11 under the action of the torsion spring 4, thereby limiting the relative rotation of the upper housing 1 and the main rotating body 2.

[0049] In the above device, since the locking member 3 is rotatably installed in the groove, its own position will not be offset. Only when the push arm 51 is in place can it be expanded to achieve the locking function, which avoids the influence of external factors on the stability and reliability of the locking function of the device.

[0050] In addition, compared with the U-shaped spring leaf in the prior art, the torsion spring 4 has stable elasticity. Even if it is in a compressed state for a long time, the torsion spring 4 can still provide stable elastic force for the locking member 3, thereby ensuring that the locking member 3 is in full contact with the recess 11, further improving the stability and reliability of the locking function.

[0051] In some embodiments, the width of the recess 11 is greater than the width of the locking member 3, and the length of the recess 11 is greater than the length of the locking portion of the locking member 3, thereby ensuring that the locking member 3 is adapted to the recess 11 and improving the smoothness of the snap-in action.

[0052] like Figure 4As shown, in some embodiments, a notch 23 is provided at one end of the through slot 21 away from the counting component 5, and the rotation point of the locking member 3 is located within the notch 23, thereby preventing interference between the bottom of the slot and the locking member 3 from affecting the flipping. It can be understood that in other embodiments, interference can also be avoided by deepening the bottom of the slot or raising the position of the rotation connection point instead of providing the notch 23.

[0053] As Figure 5 shown, in some embodiments, a first spring groove 24 is provided on the through slot 21, a second spring groove 31 is provided on the locking member 3, and both ends of the torsion spring 4 are respectively arranged in the first spring groove 24 and the second spring groove 31, thereby improving the stability of the position of the torsion spring 4.

[0054] As Figure 4 and Figure 6 shown, in some embodiments, fitting grooves 32 are provided on both sides of the locking member 3, which enables the clamping block 22 to better restrict the locking member 3, and the fitting groove 32 has an inclined contact surface 321, which slopes downward from the middle of the locking member 3 to the side, giving it a certain guiding effect and can be used to guide the separation of the locking member 3 from the clamping block 22. Correspondingly, the radial cross-section of the clamping block 22 is arc-shaped, which is beneficial for the installation and separation of the locking member 3. The clamping block 22 presses the locking member 3 in the through slot 21 by abutting and cooperating with the contact surface 321.

[0055] As Figure 2 and Figure 4 shown, in some embodiments, the counting component 5 further includes a screw 52 connected to the main rotating body 2 and a slider 53 moving along the screw 52. A tooth groove 12 is also provided on the inner wall of the upper housing 1, and the tooth groove 12 is used to drive the screw 52 to rotate, thereby driving the slider 53 to move to achieve the counting function. Briefly speaking, when the upper housing 1 rotates, it will drive the tooth groove 12 to contact the screw 52, thereby causing the screw 52 to rotate, and then driving the slider to move upward to achieve the counting function.

[0056] Specifically, a trigger unit 54 is provided at one end of the screw 52 close to the main rotating body 2, and the trigger unit 54 includes a first trigger portion 541 and a second trigger portion 542 that are vertically crossed. Among them, the first trigger portion 541 is used to engage with the tooth groove 12. When the upper housing 1 rotates, the tooth groove 12 can contact the first trigger portion 541 and drive the screw 52 to rotate, thereby achieving the counting function. The second trigger portion 542 is used to abut against the inner wall of the upper housing 1 to prevent the top of the screw 52 from shaking and yawing, enhancing the stability of the transmission between the trigger unit 54 and the screw 52. However, the second trigger portion 542 does not contact the tooth groove 12. For example, the length of the second trigger portion 542 can be set to be less than the length of the first trigger portion 541, so as to avoid interfering with the transmission between the tooth groove 12 and the first trigger portion 541.

[0057] In some embodiments, the number of the tooth grooves 12 is one or 2N, where N is a positive integer.

[0058] Exemplarily, the number of the tooth grooves 12 is two. One of the tooth grooves 12 is distributed on a half circle of the inner wall of the upper housing 1, and the other tooth groove 12 is distributed on the other half circle of the inner wall of the upper housing 1. Therefore, when the upper housing 1 rotates half a circle, the screw 52 is actuated to rotate half a circle, and the slider 53 counts once, corresponding to the atomizer releasing a spray once.

[0059] Alternatively, the number of the tooth grooves 12 is exactly one. Therefore, when the upper housing 1 rotates one circle, the screw 52 is actuated to rotate half a circle, and the slider 53 counts once, but the atomizer actually releases two sprays. That is to say, without modifying the counting assembly 5, by reducing the number of the tooth grooves 12, the counting assembly 5 can be used for more doses or more actuation counts (the stroke of the slider 53 moving is halved), thereby reducing the modification cost and increasing the scope of application.

[0060] Or, the number of the tooth grooves 12 is four. Two of the tooth grooves 12 are spaced apart and distributed on a half circle of the inner wall of the upper housing 1, and the other two tooth grooves 12 are spaced apart and distributed on the other half circle of the inner wall of the upper housing 1. Therefore, when the upper housing 1 rotates half a circle, the screw 52 is actuated to rotate one circle, and the slider 53 counts twice, but the atomizer actually releases a spray once. Similar to the principle of reducing the tooth grooves 12, without modifying the counting assembly 5, by increasing the number of the tooth grooves 12, the counting assembly 5 can be used for fewer doses or fewer actuation counts (the stroke of the slider 53 moving is doubled).

[0061] As Figure 4 shown, in some embodiments, a first mounting portion 25 and a second mounting portion 26 are sequentially arranged along the axial direction on the outer wall of the main rotor 2, and the screw 52 is rotatably connected to the first mounting portion 25 and the second mounting portion 26 respectively. Exemplarily, the first mounting portion 25 may be a shaft hole seat, and the second mounting portion 26 may be a C-shaped clamping seat for the quick loading and unloading of the screw 52.

[0062] In addition, a limiting portion 521 is arranged on the screw 52 and abuts against the second mounting portion 26, which is used to limit the axial movement of itself, so as to prevent affecting the transmission between the tooth groove 12 and the actuating unit 54 and improve the stability of the counting function of the device.

[0063] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Without departing from the principles and spirit of the present utility model, those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the utility model, and all such changes should fall within the protection scope of the claims of the present utility model.

Claims

1. A counting and locking device, characterized in that: include: An upper shell (1), wherein a recess (11) is provided on an inner wall of the upper shell (1); A main rotating body (2) is rotatably connected to the upper shell body (1), a straight groove (21) is provided on the outer wall of the main rotating body (2), and a clamping block (22) is respectively provided on both sides of the straight groove (21); A locking member (3) is rotatably disposed in the through slot (21), and a torsion spring (4) is disposed at the rotation position of the locking member (3); A counting assembly (5) arranged on the outer wall of the main rotating body (2), the counting assembly (5) comprising a push arm (51) movable along the axial direction of the device; When the counting function of the device is normal, the locking member (3) is pressed into the straight groove (21) by the clamping block (22), and when the counting function fails, the push arm (51) can cause the locking member (3) to separate from the clamping block (22) and be clamped into the recess (11) under the action of the torsion spring (4), thereby limiting the relative rotation of the upper housing (1) and the main rotating body (2).

2. The counting and locking device according to claim 1, characterized in that: The width dimension of the recess (11) is greater than the width dimension of the locking piece (3), and the length dimension of the recess (11) is greater than the length dimension of the locking portion of the locking piece (3).

3. The counting and locking device according to claim 1, characterized in that: There are two recesses (11), which are symmetrically distributed at 180° on the inner wall of the upper shell (1).

4. The counting and locking device according to claim 1, characterized in that: A notch (23) is provided at one end of the through slot (21) away from the counting assembly (5), and the rotation point of the locking member (3) is located in the notch (23).

5. The counting and locking device according to claim 1, characterized in that: The through slot (21) is provided with a first spring slot (24), the locking member (3) is provided with a second spring slot (31), and two ends of the torsion spring (4) are respectively arranged in the first spring slot (24) and the second spring slot (31).

6. The counting and locking device according to claim 1, characterized in that: Matching grooves (32) are provided on both sides of the locking member (3), and the matching grooves (32) have inclined contact surfaces (321); The radial cross section of the clamping block (22) is arc-shaped, and the clamping block (22) is in abutment with the contact surface (321).

7. The counting and locking device according to claim 1, characterized in that: The counting assembly (5) further comprises a screw rod (52) connected to the main rotating body (2) and a sliding block (53) moving along the screw rod (52); A tooth groove (12) is also provided on the inner wall of the upper shell (1), and the tooth groove (12) is used to drive the screw rod (52) to rotate, thereby driving the slider (53) to move to realize the counting function.

8. The counting and locking device according to claim 7, characterized in that: A trigger unit (54) is provided at one end of the screw rod (52) close to the main rotating body (2), and the trigger unit (54) comprises a first trigger portion (541) and a second trigger portion (542) which are perpendicularly intersected; The first touch portion (541) is used to engage with the tooth groove (12), and the second touch portion (542) is used to abut against the inner wall of the upper shell (1) but not to contact the tooth groove (12).

9. The counting and locking device according to claim 7, characterized in that: The number of the tooth grooves (12) is one or 2N, wherein N is a positive integer.

10. The counting and locking device according to claim 7, characterized in that: The outer wall of the main rotating body (2) is provided with a first mounting portion (25) and a second mounting portion (26) in sequence along the axial direction, and the screw rod (52) is rotatably connected to the first mounting portion (25) and the second mounting portion (26) respectively; The screw rod (52) is provided with a limiting portion (521) close to the second mounting portion (26) for limiting its own axial movement.

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