Additive feeding device

Abstract

The utility model discloses an additive feeding device which comprises an installation cavity provided with a push-ejection lock and a container body inserted in the installation cavity, the container body is provided with a hooking part, the push-ejection lock comprises a lock shell, a sliding block, a limiting hook, an elastic reset piece and a locking piece, the sliding block is arranged in the lock shell and slides relative to the lock shell, the limiting hook is connected to the sliding block in a rotating mode and moves along with the sliding block, and the elastic reset piece is connected with the locking piece. The front end of the sliding block is provided with a first guide face for guiding the hooking portion to be matched with the limiting hook, the sliding block is provided with a locking position and an unlocking position, the hooking portion abuts against the first guide face and pushes the sliding block to move to the locking position from the unlocking position, the limiting hook is limited by the lock shell to get close to the first guide face to hook the hooking portion, and the sliding block is limited to the locking position through the locking piece. The elastic reset piece keeps the sliding block to have the trend of moving towards the unlocking position, and when the sliding block moves to the unlocking position, the limiting hook is far away from the first guide face to release the hooking part. The utility model provides an additive feeding device which achieves the effect of stably locking an additive container and a mounting cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic dosing, in particular to an additive dosing device. Background Art

[0002] The prior art with application number CN210439012U discloses a push-pop lock for a detergent box, comprising a detergent box, a drawer, and a dispenser. The drawer is slidably arranged in the detergent box, the dispenser is mounted on the detergent box, the dispenser cooperates with the drawer, and a push-pop lock unit is provided at the rear of the detergent box. The push-pop lock unit includes two hooks, and a limit head cooperating with the push-pop lock unit is provided on the drawer. The push-pop lock unit is arranged at the rear of the detergent box. When the push-pop lock unit is pushed inward once, it is opened, and a part of the drawer is ejected. The drawer can be manually pulled out. After placing the detergent, the drawer is manually pushed in, and the limit head is hooked by the hook on the slider, which plays a locking role, so that the user does not need to tediously pull out or push in the detergent box. However, the two hooks are prone to loosening during use, and even if one of the hooks is loose, the push-pop lock will fail, and the locking will be unstable, causing the detergent box to fall out. Utility Model Content

[0003] The purpose to be achieved by the utility model is to provide an additive dispensing device, which solves the problem of unstable locking of double hooks and achieves the effect of stable locking of the additive container and the installation cavity.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: an additive dispensing device, comprising an installation cavity and a container body inserted in the installation cavity, the container body having a hooking portion, and a push-bulb lock provided in the installation cavity, the push-bulb lock comprising a lock shell, a slider, a limit hook, an elastic reset member and a locking member, the slider being placed in the lock shell and sliding relative to the lock shell, the limit hook being rotatably connected to the slider and following the movement of the slider, a first guide surface being provided at the front end of the slider for guiding the hooking portion to cooperate with the limit hook, the slider having a locking position and an unlocking position, the locking position being relatively rearward of the unlocking position, the hooking portion abutting the first guide surface and pushing the slider to move backward from the unlocking position to the locking position, the limit hook being limited by the lock shell and approaching the first guide surface to hook the hooking portion, the locking member limiting the slider to the locking position, the elastic reset member being connected between the slider and the lock shell and keeping the slider having a tendency to move toward the unlocking position, the slider moving to the unlocking position, the limit hook moving away from the first guide surface to release the hooking portion.

[0005] After adopting the above technical solution, the utility model has the following advantages: the push-open lock has two states, namely a locked state in the locked position and an unlocked state in the unlocked position. In the initial state, the slider is in the unlocked position, the limiting hook is away from the first guide surface, and the container body is aligned with the installation cavity. As the container body is pressed, the hooking part located on the container body contacts and slides along the first guide surface. The first guide surface guides the hooking part, causing the slider to slide backward from the unlocked position to the locked position. During this process, the limiting hook is pressed by the inner wall of the lock shell and gradually approaches the first guide surface and the hooking part. When the slider reaches the locked position, the limiting hook hooks the hooking part to achieve locking. Similarly, when the additive container needs to be unlocked, it is only necessary to press the container body. At this time, the elastic reset member provides elastic force to move the slider forward from the locking member to the unlocked position. The limiting hook is away from the first guide surface, releasing the container body.

[0006] In the present application, the first guide surface is a fixed surface at the front end of the slider, which is mainly used to guide the hooking part to approach the limiting hook. During the sliding process of the slider and the lock shell, the limiting hook is pressed by the lock shell and gradually approaches the first guide surface and the hooking part, and finally hooks the hooking part to achieve locking. This cooperation between the first guide surface and the limiting hook solves the problem of easy loosening of the double hook cooperation.

[0007] Furthermore, the hooking portion includes a non-return hook body and a second guide surface, which are respectively located on opposite sides of the hooking portion. The second guide surface abuts against the first guide surface to push the slider, and the limiting hook hooks the non-return hook body to limit the container body.

[0008] With the aforementioned technical solution, when the slider is in the unlocked position, the limit hook is away from the non-return hook body. When the container body is aligned with the mounting cavity, the second guide surface abuts the first guide surface and pushes the slider toward the locked position. During the sliding process, the limit hook is pressed by the inner sidewall of the lock housing, gradually approaching and hooking the non-return hook body. When the slider reaches the locked position, the limit hook firmly hooks the non-return hook body, thereby locking the container body. The non-return hook body ensures that it is stably hooked by the limit hook and is not easily dislodged. The cooperation of the second guide surface and the first guide surface enables the slider to slide smoothly from the unlocked position to the locked position, guiding the engagement of the hooking portion and the limit hook, driving the limit hook to engage the non-return hook body. This cooperation prevents shaking or loosening during the locking process, thereby improving the stability of the locking. At the same time, the non-return hook body and the second guide surface are arranged on opposite sides, making the entire hooking portion compact and further improving the reliability of the locking.

[0009] Furthermore, a limiting surface is provided on one end of the slider located on the first guide surface close to the locking member, and the hooking portion abuts against the limiting surface to push the slider.

[0010] By adopting the above-mentioned technical solution, during the cooperation process between the container body and the installation cavity, the second guide surface of the hooking part slides along the first guide surface. As it slides, the hooking part gradually approaches the limiting surface. When the hooking part abuts against the limiting surface, the second guide surface abuts against the first guide surface to enable the hooking part to push the slider to slide to the locked position or the unlocked position. The setting of the limiting surface ensures that the cooperation between the second guide surface and the first guide surface will not exceed the expected position, and provides a limiting point for it, ensuring that the continued sliding of the first guide surface and the second guide surface can be limited when sliding to the expected position, thereby avoiding the problem of excessive sliding. The limiting hook can stably cooperate with the hooking part, thereby improving the stability and reliability of the locking.

[0011] Furthermore, a convex rib is provided at the front end of the slider, the convex rib is arranged opposite to the limiting hook, the first guide surface is located on the convex rib, and the first guide surface is arranged toward the limiting hook.

[0012] By adopting the above-mentioned technical solution, the first guide surface is set toward the limiting hook, and the convex rib and the limiting hook cooperate with each other, making the structure more compact. Under the interaction between the two, the shaking between the limiting hook and the hook tightening part can be reduced, making the locking more stable.

[0013] Furthermore, the first guide surface is an inclined surface, extending from the front end of the slider to the rear end of the slider and gradually inclining toward the limiting hook.

[0014] By adopting the above-mentioned technical solution, the first guide surface is an inclined surface that is inclined in the direction of gradually approaching the limiting hook. The limiting hook will continuously approach the first guide surface during the locking process. The first guide surface will guide the hooking part to gradually approach the limiting hook, thereby guiding the hooking part. At the same time, it will make the cooperation between the first guide surface and the limiting hook more compact, and the locking of the hooking part more stable.

[0015] Furthermore, a spring-pressing member is provided in the lock housing and elastically presses against the locking member to keep the locking member inserted into the slider.

[0016] By adopting the above-mentioned technical solution, the spring-pressing part elastically presses the locking part, so that the locking part remains inserted into the slider. The spring-pressing part can effectively prevent the locking part from popping out of the locking block. The elastic pressure has good adaptability and has a good anti-fatigue effect during long-term use.

[0017] Furthermore, the elastic member includes a base and an elastic sheet bent relative to the base, the base is fixed to the lock housing, and the elastic sheet is provided with a pressing portion protruding toward the locking member, and the pressing portion presses against the locking member.

[0018] By adopting the above-mentioned technical solution, the base is fixed to the lock shell, ensuring that the spring-pressing part can be stably placed in the lock shell. The spring sheet is bent relative to the base, and the structure is more compact, so that it can provide better elastic force in a limited space and maintain a stable pressing effect on the locking part. The pressing part facilitates a tighter fit between the spring sheet and the locking part, ensuring the stability of the locking part in the lock shell.

[0019] Furthermore, the lock shell is provided with an insertion hole, and one end of the base body is provided with a fixing portion bent in the opposite direction relative to the elastic sheet, and the fixing portion is inserted into the insertion hole for fixing.

[0020] By adopting the above-mentioned technical solution, this fixing method of inserting the fixing part into the socket not only simplifies the installation process but also realizes the stable fit between the spring-pressing part and the lock shell, so that the spring-pressing part can be kept in the correct position without affecting the locking and unlocking of the container body and the installation cavity.

[0021] Furthermore, the fixing portion is provided with a non-return lug, and the fixing portion is inserted into the insertion hole so that the non-return lug passes through the insertion hole and abuts against the other side of the lock housing.

[0022] By adopting the above-mentioned technical solution, the non-return protrusion passes through the insertion hole and abuts against the other side of the lock shell, thereby increasing the fixing effect between the spring-pressing part and the lock shell, preventing the spring-pressing part from loosening during use, and enhancing the reliability of the push-to-lock lock.

[0023] Furthermore, the locking member includes a fixed end, a locking end and a connecting section. The fixed end and the locking end are connected through the connecting section. The fixed end extends in the opposite direction relative to the locking end. The fixed end is fixed to the lock housing. The locking end is inserted into the slider. The spring-pressing member acts on the end of the connecting section close to the locking end.

[0024] Using the above-mentioned technical solution, the locking member consists of a fixed end, a locking end and a connecting section. The fixed end is fixed to the lock shell to ensure that the locking member can be stably fixed on the lock shell. The locking end is inserted into the slider to put the slider in a locked or unlocked state. The connecting section is used to connect the fixed end and the locking end. The fixed end extends in the opposite direction relative to the locking end, and together with the connecting section and the locking end forms a "Z"-shaped structure.

[0025] Furthermore, one end of the base is provided with a supporting portion for supporting the connecting section, the supporting portion is provided with a through hole for the connecting section to pass through, and the fixing portion is away from the base relative to the fixing end.

[0026] By adopting the above-mentioned technical solution, one end of the base is fixed to the lock shell, thereby realizing a fixed connection with the lock shell. A support portion is provided on the base, and a through hole is provided on the support portion for the connecting section of the locking member to pass through, thereby realizing a fixed connection between the locking member and the lock shell. The support portion provides stable support for the connecting section, thereby preventing the locking member from shaking or deforming when subjected to force.

[0027] Furthermore, the slider is provided with an annularly extending guide groove, the guide groove includes a locking portion that places the slider in a locked position, and the locking member includes a locking end inserted into the guide groove, the locking end moves in a unidirectional cycle in the guide groove, and the locking end moves to the locking portion to limit the slider to the locked position.

[0028] By adopting the above-mentioned technical solution, the locking end moves in a unidirectional cycle in the guide groove, and when it moves to the locking portion, the slider can be stably in the locked position, forming a relatively reliable locking structure, ensuring that the slider will not be accidentally unlocked in the locked state.

[0029] Furthermore, a check step is provided on the bottom surface of the guide groove for limiting the unidirectional cyclic movement of the locking end.

[0030] By adopting the above-mentioned technical solution, the non-return step ensures that the locking end can only perform one-way circular motion in the guide groove. When the locking end moves to the locking position, the locking member cannot reversely exit from the locking position, preventing the push-to-lock lock from being accidentally unlocked in the locked state, thereby ensuring the stability and reliability of the push-to-lock lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below with reference to the accompanying drawings:

[0032] Figure 1 This is a schematic diagram of an additive delivery device according to the present invention;

[0033] Figure 2 For this utility model Figure 1 A magnified view of point A in the figure;

[0034] Figure 3 This is a schematic diagram of the explosion of the push-to-lock lock of the present invention;

[0035] Figure 4 This utility model Figure 3 Enlarged view of point B in . DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0037] The terms "first," "second," and so on (if any) in the specification and claims of this utility model are used to distinguish similar objects, not to describe a specific order or precedence. Even if "second" is used before a technical feature to distinguish it, it does not necessarily imply the presence of "first." It should be understood that in this utility model, "including," "having," and any variations thereof are intended to cover non-exclusive inclusions. It should be understood that in this utility model, "plurality" refers to two or more. "And / or" is merely a description of an association between related objects, indicating that three relationships can exist. For example, "X and / or Y" can mean: X exists alone, X and Y exist simultaneously, or Y exists alone. The character " / " generally indicates that the related objects are in an "or" relationship. "Including X, Y, and Z" means that all three of X, Y, and Z are included. "Including X, Y, or Z" means that one of X, Y, and Z is included. "Including X, Y, and / or Z" means that any one, any two, or any three of X, Y, and Z are included.

[0038] The following specific embodiments are used to describe the technical solution of the present invention in detail. The following specific embodiments can be combined or replaced with each other according to actual conditions, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0039] like Figures 1 to 4 As shown, the utility model provides an additive dispensing device, including a mounting cavity and a container body 1 inserted into the mounting cavity, the container body 1 is provided with a hooking portion 11, a push-up lock 2 is provided in the mounting cavity, the push-up lock 2 includes a lock shell 21, a slider 22, a limit hook 23, an elastic reset member 24 and a locking member 25, the slider 22 is placed in the lock shell 21 and slides relative to the lock shell 21, the limit hook 23 is rotatably connected to the slider 22 and moves with the slider 22, the front end of the slider 22 is provided with a first guide surface 221 for guiding the hooking portion 11 to cooperate with the limit hook 23, the slider 2 2 has a locked position and an unlocked position. The locked position is rearward relative to the unlocked position. The hooking portion 11 abuts against the first guide surface 221 and pushes the slider 22 to move backward from the unlocked position to the locked position. The limiting hook 23 is limited by the lock housing 21 and approaches the first guide surface 221 to hook the hooking portion 11. The locking member 25 limits the slider 22 to the locked position. The elastic return member 24 is connected between the slider 22 and the lock housing 21 and keeps the slider 22 with a tendency to move toward the unlocked position. When the slider 22 moves to the unlocked position, the limiting hook 23 moves away from the first guide surface 221 to release the hooking portion 11.

[0040] Specifically, the hooking portion 11 is located at the head of the container body 1 , and the container body 1 is installed obliquely in the installation cavity with the head lower than the tail.

[0041] Specifically, in the embodiment, the elastic reset member 24 is a spring connected to the sliding block 22 along the sliding path of the lock shell 21.

[0042] The push-to-latch 2 has two states, a locked state in a locking position and an unlocked state in an unlocking position.

[0043] In the initial state, the sliding block 22 is in the unlocking position, and the limiting hook 23 is away from the first guide surface 221. The container body 1 is aligned with the mounting cavity. With the pressing of the container body 1, the hooking part 11 on the container body 1 contacts and slides along the first guide surface 221. The first guide surface 221 guides the hooking part 11, so that the sliding block 22 slides from the unlocking position to the locking position. In this process, the limiting hook 23 is pressed by the inner wall of the lock shell 21, and gradually approaches the first guide surface 221 and the hooking part 11. When the sliding block 22 reaches the locking position, the limiting hook 23 hooks the hooking part 11, achieving locking. Similarly, when the additive container needs to be unlocked, the container body 1 only needs to be pressed. At this time, the elastic reset member 24 provides elastic force, so that the sliding block 22 moves from the locking part 25 to the unlocking position, and the limiting hook 23 is away from the first guide surface 221, releasing the container body 1.

[0044] The first guide surface 221 is a fixed surface at the front end of the sliding block 22, mainly used to guide the hooking part 11 to approach the limiting hook 23. The limiting hook 23 is gradually pressed by the lock shell 21 during the sliding of the sliding block 22 and the lock shell 21, and gradually approaches the first guide surface 221 and the hooking part 11. Finally, the hooking part 11 is hooked to achieve locking. This cooperation between the first guide surface 221 and the limiting hook 23 solves the problem of easy loosening of the double-hook cooperation.

[0045] Specifically, the hooking part 11 includes a check hook body 111 and a second guide surface 112, which are respectively located on opposite sides of the hooking part 11. The second guide surface 112 abuts against the first guide surface 221 to push the sliding block 22, and the limiting hook 23 hooks the check hook body 111 to limit the container body 1.

[0046] When the slider 22 is in the unlocked position, the limit hook 23 is away from the non-return hook body 111. When the container body 1 is aligned with the installation cavity, the second guide surface 112 abuts against the first guide surface 221 and pushes the slider 22 to slide toward the locked position. During the sliding process, the limit hook 23 is pressed by the inner wall of the lock shell 21, gradually approaches and hooks the non-return hook body 111. When the slider 22 reaches the locked position, the limit hook 23 firmly hooks the non-return hook body 111, thereby locking the container body 1. The non-return hook body 111 ensures that it can be stably hooked by the limiting hook 23 and is not easy to fall off. The cooperation between the second guide surface 112 and the first guide surface 221 enables the slider 22 to slide smoothly from the unlocking position to the locking position, guiding the cooperation between the hooking part 11 and the limiting hook 23, driving the limiting hook 23 to hook the non-return hook body 111. This cooperation method avoids shaking or loosening during the locking process, and improves the locking stability. At the same time, the non-return hook body 111 and the second guide surface 112 are arranged on opposite sides, so that the entire hooking part 11 has a compact structure, which further improves the locking reliability.

[0047] Specifically, a limiting surface 222 is provided on one end of the slider 22 located on the first guide surface 221 close to the locking member 25 , and the hooking portion 11 abuts against the limiting surface 222 to push the slider 22 .

[0048] During the cooperation between the container body 1 and the installation cavity, the second guide surface 112 of the hooking portion 11 slides along the first guide surface 221. As it slides, the hooking portion 11 gradually approaches the limiting surface 222. When the hooking portion 11 abuts against the limiting surface 222, the second guide surface 112 abuts against the first guide surface 221 to enable the hooking portion 11 to push the slider 22 to slide to the locked position or the unlocked position. The setting of the limiting surface 222 ensures that the cooperation between the second guide surface 112 and the first guide surface 221 will not exceed the expected position, providing a limiting point for it, ensuring that the first guide surface 221 and the second guide surface 112 can be limited to continue sliding when sliding to the expected position, thereby avoiding the problem of excessive sliding. The limiting hook 23 can stably cooperate with the hooking portion 11, thereby improving the stability and reliability of the locking.

[0049] A rib 223 is provided at the front end of the slider 22 . The rib 223 is arranged opposite to the limiting hook 23 . The first guide surface 221 is located on the rib 223 , and the first guide surface 221 is arranged toward the limiting hook 23 .

[0050] The first guide surface 221 is arranged toward the limiting hook 23, and the rib 223 cooperates with the limiting hook 23 to make the structure more compact. Under the interaction between the two, the shaking between the limiting hook 23 and the hooking part 11 can be reduced, making the locking more stable.

[0051] Preferably, the first guide surface 221 is an inclined surface, extending from the front end of the slider 22 to the rear end of the slider 22 and gradually inclining toward the limiting hook 23 .

[0052] The first guide surface 221 is an inclined surface that is inclined in the direction of gradually approaching the limiting hook 23. The limiting hook 23 will continue to approach the first guide surface 221 during the locking process. The first guide surface 221 will guide the hooking portion 11 to gradually approach the limiting hook 23, thereby guiding the hooking portion 11. At the same time, it will make the cooperation between the first guide surface 221 and the limiting hook 23 more compact, and the locking of the hooking portion 11 more stable.

[0053] A spring member 26 is provided in the lock housing 21 to elastically press against the locking member 25 so that the locking member 25 remains inserted into the slider 22 .

[0054] The spring-pressing member 26 elastically presses the locking member 25 to keep the locking member 25 inserted into the slider 22. The spring-pressing member 26 can effectively prevent the locking member from accidentally popping out of the lock block. The elastic pressing has good adaptability and has a good anti-fatigue effect during long-term use.

[0055] The elastic member 26 includes a base 261 and an elastic piece 262 bent relative to the base 261 . The base 261 is fixed to the lock housing 21 . The elastic piece 262 has a pressing portion 263 protruding toward the locking member 25 . The pressing portion 263 presses against the locking member 25 .

[0056] The base 261 is fixed to the lock housing 21, ensuring that the spring-pressing member 26 can be stably placed in the lock housing 21. The spring piece 262 is bent relative to the base 261, and the structure is more compact, so that it can provide better elastic force in a limited space and maintain a stable pressing effect on the locking member 25. The pressing portion 263 facilitates a tighter fit between the spring piece 262 and the locking member 25, ensuring the stability of the locking member 25 in the lock housing 21.

[0057] Preferably, the base 261 and the spring piece 262 are partially hollowed out in a suitable range, so as to avoid the elastic force being too large, which would cause too much effort in inserting the container body 1 into the installation cavity, and to avoid the elastic force being too small, which would cause the connection between the spring piece 262 and the locking piece 25 to be too loose, resulting in locking failure.

[0058] The lock housing 21 is provided with an insertion hole 211 , and one end of the base 261 is provided with a fixing portion 265 that is bent in the opposite direction relative to the elastic piece 262 . The fixing portion 265 is inserted into the insertion hole 211 and fixed.

[0059] This fixing method of inserting the fixing part 265 into the socket 211 simplifies the installation process and realizes a stable fit between the spring-pressing member 26 and the lock shell 21 , so that the spring-pressing member 26 can be kept in the correct position without affecting the locking and unlocking of the container body 1 and the installation cavity.

[0060] The fixing portion 265 is provided with a non-return protrusion 266 . The fixing portion 265 is inserted into the insertion hole 211 so that the non-return protrusion 266 passes through the insertion hole 211 and abuts against the other side of the lock housing 21 .

[0061] The anti-return tab 266 passes through the insertion hole 211 and abuts against the other side of the lock housing 21, thereby increasing the fixing effect between the spring-pressing member 26 and the lock housing 21, preventing the spring-pressing member 26 from loosening during use, and enhancing the reliability of the push-to-lock 2.

[0062] The locking member 25 includes a fixed end 251, a locking end 252 and a connecting section 253. The fixed end 251 and the locking end 252 are connected by the connecting section 253. The fixed end 251 extends in the opposite direction relative to the locking end 252. The fixed end 251 is fixed to the lock housing 21, and the locking end 252 is inserted into the slider 22. The spring-pressing member 26 acts on the end of the connecting section 253 close to the locking end 252.

[0063] The locking member 25 consists of a fixed end 251, a locking end 252 and a connecting section 253. The fixed end 251 is fixed to the lock housing 21 to ensure that the locking member 25 can be stably fixed on the lock housing 21. The locking end 252 is inserted into the slider 22 to put the slider 22 in a locked or unlocked state. The connecting section 253 is used to connect the fixed end 251 and the locking end 252. The fixed end 251 extends in the opposite direction relative to the locking end 252, and together with the connecting section 253 and the locking end 252, forms a "Z"-shaped structure.

[0064] One end of the base 261 is provided with a supporting portion 267 for supporting the connecting section 253 . The supporting portion 267 is provided with a through hole 268 for the connecting section 253 to pass through. The fixing portion 265 is farther away from the base 261 than the fixing end 251 .

[0065] One end of the base 261 is fixed to the lock housing 21, realizing a fixed connection with the lock housing 21. A support portion 267 is provided on the base 261, and a through hole 268 is provided on the support portion 267 for the connecting section 253 of the locking member 25 to pass through, realizing a fixed connection between the locking member 25 and the lock housing 21. The support portion 267 provides a stable support for the connecting section 253, preventing the locking member 25 from shaking or deforming when subjected to force.

[0066] An annular guide groove 224 is provided on the slider 22, and the guide groove 224 includes a locking portion 225 that places the slider 22 in a locked position. The locking member 25 includes a locking end 252 inserted into the guide groove 224, and the locking end 252 moves in a unidirectional cycle in the guide groove 224. The locking end 252 moves to the locking portion 225 to limit the slider 22 to the locked position.

[0067] The locking end 252 is in one-way circulation movement in the guide groove 224, and can make the slider 22 stable in the locking position when moving to the locking part 225, forming a relatively reliable locking structure, ensuring that the slider 22 will not be unlocked accidentally in the locking state.

[0068] The bottom surface of the guide groove 224 is provided with a check step 226 for limiting the one-way circulation movement of the locking end 252.

[0069] The check step 226 ensures that the locking end 252 can only be in one-way circulation movement in the guide groove 224, and the locking part 25 cannot be withdrawn from the locking position in the reverse direction when the locking end 252 moves to the locking position, preventing the push-bolt lock 2 from being accidentally unlocked in the locking state, thereby ensuring the stability and reliability of the push-bolt lock 2.

[0070] In addition to the preferred embodiments described above, the utility model also has other implementation manners, and all other embodiments obtained by those skilled in the art based on the embodiments in the utility model without creative labor belong to the range of the utility model claimed.

Claims

1. An additive dispensing device, comprising a mounting cavity and a container body inserted into the mounting cavity, the container body being provided with a hooking portion, a push-on lock being provided in the mounting cavity, the push-on lock comprising a lock housing, a slider, a limit hook, an elastic reset member, and a locking member, the slider being placed in the lock housing and sliding relative to the lock housing, the limit hook being rotatably connected to the slider and following the movement of the slider, characterized in that: The front end of the slider is provided with a first guide surface for guiding the hooking portion to cooperate with the limit hook. The slider has a locking position and an unlocking position. The locking position is relatively rearward relative to the unlocking position. The hooking portion abuts against the first guide surface and pushes the slider to move backward from the unlocking position to the locking position. The limit hook is limited by the lock shell and approaches the first guide surface to hook the hooking portion. The locking member restricts the slider to the locking position. The elastic reset member is connected between the slider and the lock shell and keeps the slider with a tendency to move toward the unlocking position. The slider moves to the unlocking position and the limit hook moves away from the first guide surface to release the hooking portion.

2. The additive delivery device according to claim 1, characterized in that: The hooking portion includes a non-return hook body and a second guide surface, which are respectively located on opposite sides of the hooking portion. The second guide surface abuts against the first guide surface to push the slider, and the limiting hook hooks the non-return hook body to limit the container body.

3. The additive delivery device according to claim 1, characterized in that: A limiting surface is provided on one end of the slider located on the first guide surface close to the locking member, and the hooking portion abuts against the limiting surface to push the slider.

4. The additive delivery device according to claim 1, characterized in that: A convex rib is provided at the front end of the slider, the convex rib is arranged opposite to the limiting hook, the first guide surface is located on the convex rib, and the first guide surface is arranged toward the limiting hook.

5. The additive delivery device according to claim 4, characterized in that: The first guide surface is an inclined surface, extending from the front end of the slider to the rear end of the slider and gradually inclining toward the limiting hook.

6. The additive delivery device according to claim 1, characterized in that: A spring-pressing piece is provided in the lock housing and elastically presses against the locking piece to keep the locking piece inserted into the slide block.

7. The additive delivery device according to claim 6, characterized in that: The elastic pressing member includes a base and an elastic sheet bent relative to the base. The base is fixed to the lock housing. The elastic sheet is provided with a pressing portion protruding toward the locking member, and the pressing portion presses against the locking member.

8. The additive delivery device according to claim 7, characterized in that: The lock shell is provided with an inserting hole, and one end of the base body is provided with a fixing part which is bent in the opposite direction relative to the elastic sheet, and the fixing part is inserted into the inserting hole for fixing.

9. The additive delivery device according to claim 8, characterized in that: The fixing part is provided with a non-return convex piece, and the fixing part is inserted into the insertion hole so that the non-return convex piece passes through the insertion hole and abuts against the other side of the lock shell.

10. The additive delivery device according to claim 8, characterized in that: The locking piece includes a fixed end, a locking end and a connecting section. The fixed end and the locking end are connected through the connecting section. The fixed end extends in the opposite direction relative to the locking end. The fixed end is fixed to the lock housing. The locking end is inserted into the slider. The spring-pressing piece acts on the end of the connecting section close to the locking end.

11. The additive delivery device according to claim 10, characterized in that: One end of the base is provided with a supporting portion for supporting the connecting section, the supporting portion is provided with a through hole for the connecting section to pass through, and the fixing portion is relatively far away from the base.

12. The additive delivery device according to claim 6, characterized in that: The slider is provided with an annular guide groove, which includes a locking portion that places the slider in a locked position. The locking piece includes a locking end inserted into the guide groove. The locking end moves in a unidirectional cycle in the guide groove. The locking end moves to the locking portion to limit the slider to the locked position.

13. The additive delivery device according to claim 12, characterized in that: The bottom surface of the guide groove is provided with a non-return step for limiting the unidirectional cyclic movement of the locking end.

Images