A container with a central dispensing cap

Abstract

This utility model discloses a container with a central dispensing cap, including a bottle body, an inner cap, a dispensing cap, and an outer cap. The inner cap has a sealing protrusion and a sliding groove, the dispensing cap has a dispensing hole and a sliding protrusion, and the outer cap has a lifting guide groove. After the dispensing cap, inner cap, outer cap, and bottle body are assembled, the sliding protrusion passes through the sliding groove and is located inside the lifting guide groove. When the outer cap is rotated counterclockwise, the outer cap only rotates. The sliding protrusion slides to the end of the sliding groove and the lifting guide groove, and the dispensing cap spirals up relative to the inner cap. When the dispensing cap rises until the lower edge of its dispensing hole is higher than the top plane of the sealing protrusion, the solution inside the bottle body is discharged outward from the dispensing hole. The anti-rotation protrusion abuts against the locking block, restricting the circumferential rotation of the inner cap relative to the connecting piece, thereby separating the rotation and opening / closing actions. The outer cap only rotates, and the dispensing cap moves up and down to open and close. Users can perceive the state and degree of opening and closing of the outer cap through different tactile feedback from the rotation and up and down movements.

Description

Technical Field

[0001] This utility model relates to the field of center-dispensing cap technology, specifically a container with a center-dispensing cap. Background Technology

[0002] Center-dispensing caps are widely used in various container products, especially in the fields of cosmetics, food, daily chemical products and some industrial products. As an important component of containers, the main function of center-dispensing caps is to control the outflow of substances inside the container, while ensuring that the container has good sealing performance when not in use, preventing the contents from leaking, deteriorating or being contaminated by the outside.

[0003] In existing central dispensing cap designs, there are various opening and closing methods. One of the more traditional and common designs is an opening and closing mechanism in which the outer cap rotates and lifts simultaneously. In this design, when the user needs to open the cap to use the product inside the container, by rotating the outer cap, the outer cap will lift upwards while rotating, thereby exposing the internal dispensing port and realizing the product dispensing function. When closing, the outer cap rotates in the opposite direction, causing it to descend and fit tightly against the container opening to achieve a sealing effect.

[0004] However, the design of rotating and lifting the outer cover at the same time leads to unclear operation feedback. When opening and closing, users cannot accurately perceive the status and degree of opening and closing of the outer cover, and are not sure whether the outer cover has been fully opened or closed. They need to repeatedly confirm, which reduces the efficiency and convenience of operation. Utility Model Content

[0005] In order to overcome the shortcomings of existing technical solutions, this utility model provides a container with a central dispensing cap, which can effectively solve the technical problems raised in the background art.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a container with a central dispensing cap, including a bottle body, an inner cap, a dispensing cap and an outer cap. The inside of the bottle body is hollow to form a liquid storage cavity. The inner cap has a sealing protrusion at one end facing the dispensing cap, and a dispensing hole is opened in the middle of the dispensing cap.

[0007] The side wall of the dispensing cap is provided with a sliding protrusion, the inner cap is provided with a sliding groove, the sliding groove extends spirally along the side wall of the inner cap, and the inner wall of the outer cap is provided with a lifting guide groove. The dispensing cap is located inside the inner cap, the outer cap is fitted on the inner cap, the inner cap is fitted on the bottle body, and the sliding protrusion passes through the sliding groove and is located inside the lifting guide groove.

[0008] Furthermore, the bottle body is provided with a connector at the bottle mouth, the outer wall of the connector is provided with a locking block, the locking block is provided with a first arc surface, the inner cover is provided with an anti-rotation structure, the anti-rotation structure includes anti-rotation protrusions and deformation members arranged circumferentially, the anti-rotation protrusions are provided with a second arc surface, and the locking block is located between the deformation member and the anti-rotation protrusions.

[0009] Furthermore, the inner cover is provided with an internal threaded protrusion, and the outer wall of the connector is provided with an external threaded protrusion. The external threaded protrusion and the internal threaded protrusion are threadedly engaged, so that the inner cover and the connector are connected to each other.

[0010] Furthermore, a nozzle is fixedly provided in the inner cavity of the inner cover. The nozzle includes a first connecting part, a second connecting part, and a third connecting part. The anti-rotation structure is formed on the inner wall of the first connecting part, the internal threaded protrusion is formed on the inner wall of the second connecting part, a spray hole is opened in the center of the third connecting part, the sealing protrusion is located in the middle of the spray hole, and the inner wall of the third connecting part is formed with reinforcing ribs for fixing the position of the sealing protrusion.

[0011] Furthermore, the first connecting portion is spaced from the inner wall of the inner cover to form a movable groove, and the bottom end of the dispensing cap is located inside the movable groove.

[0012] Furthermore, the second connecting portion is provided with a first sealing protrusion in the shape of an annulus. The first sealing protrusion is inserted into the interior of the connector, and the outer wall of the first sealing protrusion is in close contact with the inner wall of the connector.

[0013] Furthermore, the distribution cover is provided with a second sealing protrusion and a third sealing protrusion in the shape of a ring, the second sealing protrusion and the third sealing protrusion are spaced apart to form a limiting groove, and the top end of the third connecting part is located inside the limiting groove.

[0014] Furthermore, the end of the distribution cap facing the third connection portion is provided with a fourth sealing protrusion in the shape of a ring, and the sealing protrusion is inserted into the interior of the fourth sealing protrusion.

[0015] Furthermore, the inner wall of the outer cover is provided with a guide protrusion, and the outer wall of the inner cover is provided with an anti-detachment protrusion. The anti-detachment protrusion is spaced from the bottle body to form a rotating groove, and the guide protrusion of the outer cover is located in the rotating groove of the inner cover.

[0016] Furthermore, the inner cover has at least two deformation grooves cut into its sidewalls, and a deformation protrusion is formed at the upper end of each deformation groove. Each deformation protrusion has an arc-shaped surface and is used to engage with a sliding protrusion.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] After the outer and inner caps are assembled, the guide protrusion of the outer cap is located in the rotating groove of the inner cap, allowing the outer cap to rotate circumferentially relative to the inner cap. The anti-detachment protrusion prevents the outer cap from detaching from the inner cap in the axial direction. Therefore, the outer cap only has a rotating motion. When the user rotates the outer cap counterclockwise, the sliding protrusion slides to the end of the sliding groove of the inner cap and the lifting guide groove of the dispensing cap. The dispensing cap spirals upward relative to the inner cap. When the dispensing cap rises until the lower edge of its dispensing hole is higher than the top plane of the sealing protrusion, the solution inside the bottle flows from the dispensing hole into the inner cap. During the external discharge process, the force exerted by the sliding protrusion on the inner cover is negligible as it slides from the initial end of the spiral groove and the lifting guide groove to the final end. Therefore, the second arc surface of the anti-rotation protrusion abuts against the first arc surface of the locking block, which can restrict the circumferential rotation of the inner cover relative to the connecting piece. This achieves a design that separates the rotation and opening / closing actions. The outer cover only rotates, and the up-and-down movement of the distributed cover achieves opening and closing. Users can more clearly perceive the state and degree of opening and closing of the outer cover through different tactile feedback from rotation and up-and-down movement. Attached Figure Description

[0019] Figure 1 A three-dimensional view of the initial state of a container with a centrally dispensed cap;

[0020] Figure 2 A three-dimensional view of a container with a centrally dispensed cap in use;

[0021] Figure 3 This is an exploded view of the structure of a container with a centrally distributed cap, viewed from top angle.

[0022] Figure 4 An exploded view of the structure of a container with a centrally distributed cap, viewed from below.

[0023] Figure 5 This is a top-down view of the inner cover.

[0024] Figure 6 A three-dimensional view of the inner cover from an upward angle;

[0025] Figure 7 A three-dimensional diagram showing the angle of view for assigning the cap;

[0026] Figure 8 A cross-sectional view of the locking block and the anti-rotation structure;

[0027] Figure 9 A cross-sectional view of the inner cover and the dispensing cap in their assembled state;

[0028] Figure 10 A three-dimensional view of the inner cover and the assembled sealing cap.

[0029] Numbering on the map:

[0030] 100. Bottle body; 101. Connector; 102. Locking block; 1021. Curved surface; 103. External threaded protrusion;

[0031] 200. Outer cover; 201. Guide protrusion; 202. Lifting guide groove;

[0032] 300. Distribution cap; 301. Distribution hole; 302. Sliding protrusion; 303. Second sealing protrusion;

[0033] 400. Inner cover; 401. Nozzle; 402. Sealing protrusion; 403. Internal thread protrusion; 404. Slide groove; 405. First sealing protrusion; 406. Third connecting part; 407. Initial end; 408. Deformation groove; 409. Arc-shaped surface; 410. Termination end; 411. Anti-detachment protrusion; 412. Spray hole; 413. First connecting part; 414. Anti-rotation protrusion; 415. Second connecting part; 416. Deformation component; 4161. Fixed end; 4162. Free end; 417. Reinforcing rib; 418. Third sealing protrusion; 419. Fourth sealing protrusion; 420. Deformation protrusion. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] like Figure 1-10 As shown, the present invention provides a container with a central dispensing cap, including a bottle body 100, an inner cap 400, a dispensing cap 300, and an outer cap 200. The bottle body 100 is hollow to form a liquid storage cavity. The inner cap 400 has a sealing protrusion 402 at one end facing the dispensing cap 300. The dispensing cap 300 has a dispensing hole 301 in the middle. The sealing protrusion 402 is used to block the dispensing hole 301 so that the liquid inside the liquid storage cavity cannot flow out.

[0036] The bottle body 100 has a connector 101 at the bottle mouth. The inner cover 400 has an internal threaded protrusion 403. The outer wall of the connector 101 has an external threaded protrusion 103. The inner cover 400 has a sliding groove 404, which extends spirally along the side wall of the inner cover 400. The lower end of the sliding groove 404 along its spiral extension direction is the initial end 407, and the higher end is the termination end 410. The inner wall of the outer cover 200 has a lifting guide groove 202. The side wall of the dispensing cover 300 has a sliding protrusion 302. The outer wall of the connector 101 has a locking block 102, which has a first arc surface 1021. The inner cover 400 has an anti-rotation structure, which includes a circumferential... An anti-rotation protrusion 414 and a deformable element 416 are provided at intervals. The anti-rotation protrusion 414 has a second arc surface 1021. One end of the deformable element 416 is a fixed end 4161 connected to the inner wall of the inner cover 400, and the other end is a free end 4162. The connection between the free end 4162 and the fixed end 4161 is curved. In the initial state, the distribution cover 300 is located inside the inner cover 400, and the outer cover 200 is sleeved on the inner cover 400. The sliding protrusion 302 passes through the sliding groove 404 and is located inside the lifting guide groove 202. On the one hand, this design allows the sliding protrusion 302 to slide along the spiral sliding groove 404 when the user rotates the outer cover 200. At the same time, the sliding protrusion 302 will also slide along the lifting guide groove 202. The longitudinal synchronous sliding of 02 ultimately causes the distribution cover 300 to spiral upward or downward relative to the inner cover 400. This also completes the assembly of the distribution cover 300, outer cover 200, and inner cover 400, preventing the distribution cover 300 and outer cover 200 from detaching from the inner cover 400. Then, the inner cover 400 is fitted onto the connector 101. At this time, the external threaded protrusion 103 and the internal threaded protrusion 403 are threadedly engaged, connecting the inner cover 400 to the connector 101. The locking block 102 is located between the deformable member 416 and the anti-rotation protrusion 414. The free end 4162 of the deformable member 416 abuts against the left side wall of the locking block 102 to prevent the inner cover 400 from rotating clockwise. When the sliding protrusion 302 is in the sliding groove 404 and the lifting guide groove 202... At the initial end 407, the sealing protrusion 402 closes the dispensing hole 301. When the outer cover 200 is rotated, causing the sliding protrusion 302 to slide to the end 410 of the sliding groove 404 and the lifting guide groove 202, the dispensing cap 300 spirals upward relative to the inner cover 400. When the dispensing cap 300 rises until the lower edge of its dispensing hole 301 is higher than the top plane of the sealing protrusion 402, the solution inside the bottle 100 is discharged outward from the dispensing hole 301. During the process of the sliding protrusion 302 sliding from the initial end 407 of the spiral sliding groove 404 and the lifting guide groove 202 to the end 410, the second arc surface 1021 of the anti-rotation protrusion 414 abuts against the first arc surface 1021 of the locking block 102 to restrict the circumferential rotation of the inner cover 400 relative to the connecting member 101.When the sliding protrusion 302 is at the end 410 of the sliding groove 404 and the lifting guide groove 202, the outer cover 200 is continuously rotated counterclockwise, causing the first arc surface 1021 of the locking block 102 to overcome the locking force between it and the second arc surface 1021 of the anti-rotation protrusion 414 and disengage. The internal threaded protrusion 403 on the inner cover 400 is threadedly engaged with the external threaded protrusion 103 on the connecting member 101, causing the inner cover 400 to move upward relative to the connecting member 101.

[0037] Preferably, the inner cover 400 has at least two deformation grooves 408 cut into its side wall, and a deformation protrusion 420 is formed at the upper end of each deformation groove 408. Each deformation protrusion 420 has an arc-shaped surface 409. The deformation protrusion 420 is used to cooperate with the sliding protrusion 302. When the outer cover 200 is not rotating, the arc-shaped surface 409 of the deformation protrusion 420 is in close contact with the surface of the sliding protrusion 302 to prevent the sliding protrusion 302 from disengaging from the initial end 407 or the final end 410 of the groove 404.

[0038] Preferably, the inner wall of the outer cover 200 is provided with a guide protrusion 201, and the outer wall of the inner cover 400 is provided with an anti-detachment protrusion 411. The anti-detachment protrusion 411 is spaced from the bottle body 100 to form a rotation groove. After the outer cover 200 and the inner cover 400 are assembled, the guide protrusion 201 of the outer cover 200 is located in the rotation groove of the inner cover 400, so that the outer cover 200 can rotate circumferentially relative to the inner cover 400. The anti-detachment protrusion 411 is used to restrict the outer cover 200 from detaching from the inner cover 400 in the axial direction.

[0039] The inner cavity of the inner cover 400 is fixedly provided with a nozzle 401. The nozzle 401 includes a first connecting part 413, a second connecting part 415 and a third connecting part 406 whose outer diameter gradually decreases from bottom to top. The first connecting part 413 and the second connecting part 415 are open at one end facing the connector 101. A channel opening is provided in the center of the second connecting part 415. The anti-rotation structure is formed on the inner wall of the first connecting part 413. The internal threaded protrusion 403 is formed on the inner wall of the second connecting part 415. A spray hole 412 is provided in the center of the third connecting part 406. The sealing protrusion 402 is provided in the middle of the spray hole 412. Furthermore, the inner wall of the third connecting part 406 is formed with a reinforcing rib 417 for fixing the position of the sealing protrusion 402.

[0040] Preferably, the first connecting part 413 is spaced from the inner wall of the inner cover 400 to form a movable groove. After the dispensing cover 300 and the inner cover 400 are assembled, the bottom end of the dispensing cover 300 is located inside the movable groove, so that the dispensing cover 300 can move spirally upward relative to the inner cover 400.

[0041] Preferably, the second connecting part 415 is provided with a first sealing protrusion 405 in the shape of an annulus at one end facing the connector 101. After the inner cover 400 is assembled with the connector 101, the first sealing protrusion 405 is inserted into the interior of the connector 101, and the outer wall of the first sealing protrusion 405 is tightly fitted with the inner wall of the connector 101 to improve the sealing performance and make the liquid inside the liquid storage chamber flow out only from the distribution hole 301.

[0042] Preferably, the end of the distribution cover 300 facing the third connecting part 406 is provided with a second sealing protrusion 303 and a third sealing protrusion 418 in the shape of a ring. The second sealing protrusion 303 and the third sealing protrusion 418 form a limiting groove at intervals. After the distribution cover 300 and the inner cover 400 are assembled, the top end of the third connecting part 406 is provided inside the limiting groove in a transition fit manner, so that the distribution cover 300 can make a spiral upward movement relative to the inner cover 400 while ensuring the sealing performance.

[0043] Preferably, the end of the distribution cover 300 facing the third connecting part 406 is provided with a fourth sealing protrusion 419 in the shape of a ring. After the distribution cover 300 and the inner cover 400 are assembled, the sealing protrusion 402 is inserted into the interior of the fourth sealing protrusion 419, thereby further improving the sealing performance.

[0044] Working principle:

[0045] When the user rotates the outer cap 200 counterclockwise, causing the sliding protrusion 302 to slide to the end 410 of the sliding groove 404 and the lifting guide groove 202, the dispensing cap 300 spirals upward relative to the inner cap 400. When the dispensing cap 300 rises until the lower edge of its dispensing hole 301 is higher than the top plane of the sealing protrusion 402, the solution inside the bottle 100 is discharged outward from the dispensing hole 301. During this process, the actions of the sliding protrusion 302, the dispensing cap 300, and the anti-rotation structure are as follows:

[0046] The movement of the sliding protrusion 302 causes the groove wall of the lifting guide groove 202 to move the sliding protrusion 302. During the movement, the sliding protrusion 302 applies pressure to the deformation protrusion 420 of the initial end 407, causing it to deflect towards the deformation groove 408. After the sliding protrusion 302 disengages from the deformation protrusion 420 of the initial end 407, it continues to slide along the groove 404. While sliding along the spiral groove 404, the sliding protrusion 302 simultaneously slides along the top of the lifting guide groove 202. Then, the sliding protrusion 302 applies pressure to the deformation protrusion 420 of the termination end 410, causing it to deflect towards the deformation groove 408. After the sliding protrusion 302 disengages from the deformation protrusion 420 of the termination end 410, it continues to slide along the groove 404. The deformation protrusion 420 elastically resets after the sliding protrusion 302 leaves. Finally, the sliding protrusion 302 is stuck by the deformation protrusion 420 of the termination end 410.

[0047] The dispensing cap 300 is in operation. The dispensing cap 300 spirals upward relative to the inner cap 400. When the dispensing cap 300 rises to the point where the lower edge of its dispensing hole 301 is higher than the top plane of the sealing protrusion 402, the solution inside the bottle body 100 is discharged outward from the dispensing hole 301.

[0048] The anti-rotation structure operates because the contact force between the sliding protrusion 302 and the inner cover 400 is small during the process of the sliding protrusion 302 sliding from the initial end 407 of the spiral groove 404 and the lifting guide groove 202 to the terminal end 410, and the direction of the force is mainly along the extension direction of the groove. Therefore, the force applied by the sliding protrusion 302 to the inner cover 400 is so small as to be negligible. The second arc surface 1021 of the anti-rotation protrusion 414 abuts against the first arc surface 1021 of the locking block 102. When they abut against each other, a frictional force is generated that hinders the rotation of the inner cover 400 relative to the connecting member 101, which can effectively limit the circumferential rotation of the inner cover 400 relative to the connecting member 101.

[0049] When the sliding protrusion 302 is at the end 410 of the sliding groove 404 and the lifting guide groove 202, the outer cover 200 is continuously rotated counterclockwise, causing the first arc surface 1021 of the locking block 102 to overcome the locking force between it and the second arc surface 1021 of the anti-rotation protrusion 414 and disengage. At the same time, during the counterclockwise rotation, the locking block 102 touches and applies pressure to the deformable part 416. The free end 4162 of the deformable part 416 deflects towards the inner wall of the inner cover 400, avoiding the locking block 102 so that the inner cover 400 can continue to rotate counterclockwise. The internal thread protrusion 403 on the inner cover 400 is threadedly engaged with the external thread protrusion 103 on the connector 101, causing the inner cover 400 to move upward relative to the connector 101, thereby separating the inner cover 400 from the connector 101 for liquid replenishment.

[0050] Compared to traditional technologies:

[0051] After the outer cover 200 and the inner cover 400 are assembled, the guide protrusion 201 of the outer cover 200 is located in the rotation groove of the inner cover 400, allowing the outer cover 200 to rotate circumferentially relative to the inner cover 400. The anti-detachment protrusion 411 is used to prevent the outer cover 200 from detaching from the inner cover 400 in the axial direction. Therefore, the outer cover 200 only has a rotational motion. When the user rotates the outer cover 200 counterclockwise, the sliding protrusion 302 slides to the sliding groove 404 of the inner cover 400 and the termination end 410 of the lifting guide groove 202 of the dispensing cap 300. The dispensing cap 300 spirals upward relative to the inner cover 400. When the dispensing cap 300 rises until the lower edge of its dispensing hole 301 is higher than the top plane of the sealing protrusion 402, the bottle body 100... The internal solution is discharged outward from the dispensing hole 301. During this process, as the sliding protrusion 302 slides from the initial end 407 of the spiral groove 404 and the lifting guide groove 202 to the terminal end 410, the force exerted by the sliding protrusion 302 on the inner cover 400 is negligible. Therefore, the second arc surface 1021 of the anti-rotation protrusion 414 abuts against the first arc surface 1021 of the locking block 102, which can restrict the circumferential rotation of the inner cover 400 relative to the connector 101. This achieves a design that separates the rotation and opening / closing actions. The outer cover 200 only rotates, while the dispensing cover 300 moves up and down to achieve opening and closing. Users can more clearly perceive the state and degree of opening and closing of the outer cover 200 through different tactile feedback from rotation and up and down movement.

[0052] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A container with a central dispensing cap, comprising a bottle body, an inner cap, a dispensing cap, and an outer cap, wherein the bottle body is hollow to form a liquid storage cavity, characterized in that, The inner cover has a sealing protrusion at one end facing the distribution cover, and a distribution hole is opened in the middle of the distribution cover; The side wall of the dispensing cap is provided with a sliding protrusion, the inner cap is provided with a sliding groove, the sliding groove extends spirally along the side wall of the inner cap, and the inner wall of the outer cap is provided with a lifting guide groove. The dispensing cap is located inside the inner cap, the outer cap is fitted on the inner cap, the inner cap is fitted on the bottle body, and the sliding protrusion passes through the sliding groove and is located inside the lifting guide groove.

2. A container with a centrally dispensed cap according to claim 1, characterized in that, The bottle body is provided with a connector at the bottle mouth, the outer wall of the connector is provided with a locking block, the locking block is provided with a first arc surface, the inner cover is provided with an anti-rotation structure, the anti-rotation structure includes anti-rotation protrusions and deformation members arranged circumferentially, the anti-rotation protrusions are provided with a second arc surface, and the locking block is located between the deformation member and the anti-rotation protrusions.

3. A container having a central dispensing closure according to claim 2, wherein, The inner cover is provided with an internal threaded protrusion, and the outer wall of the connector is provided with an external threaded protrusion. The external threaded protrusion and the internal threaded protrusion are threadedly engaged, so that the inner cover and the connector are connected to each other.

4. A container having a central dispensing closure according to claim 3, wherein, The inner cavity of the inner cover is fixedly provided with a nozzle, which includes a first connecting part, a second connecting part and a third connecting part. The anti-rotation structure is formed on the inner wall of the first connecting part, the internal threaded protrusion is formed on the inner wall of the second connecting part, the center of the third connecting part has a spray hole, the sealing protrusion is located in the middle of the spray hole, and the inner wall of the third connecting part is formed with reinforcing ribs for fixing the position of the sealing protrusion.

5. A container having a central dispensing closure according to claim 4, wherein, The first connecting part is spaced from the inner wall of the inner cover to form a movable groove, and the bottom end of the dispensing cover is located inside the movable groove.

6. A container having a central dispensing closure according to claim 4, wherein, The second connecting part is provided with a first sealing protrusion in the shape of a ring. The first sealing protrusion is inserted into the interior of the connector, and the outer wall of the first sealing protrusion is in close contact with the inner wall of the connector.

7. A container having a central dispensing closure according to claim 4, wherein, The distribution cover is provided with a second sealing protrusion and a third sealing protrusion in the shape of a ring. The second sealing protrusion and the third sealing protrusion are spaced apart to form a limiting groove, and the top end of the third connecting part is located inside the limiting groove.

8. A container having a central dispensing closure according to claim 7, wherein, The end of the distribution cover facing the third connection portion is provided with a fourth sealing protrusion in the shape of a ring, and the sealing protrusion is inserted into the interior of the fourth sealing protrusion.

9. A container having a central dispensing closure according to claim 1, wherein, The inner wall of the outer cap is provided with a guide protrusion, and the outer wall of the inner cap is provided with an anti-detachment protrusion. The anti-detachment protrusion is spaced from the bottle body to form a rotation groove, and the guide protrusion of the outer cap is located in the rotation groove of the inner cap.

10. A container having a central dispensing closure according to claim 1, wherein, The inner cover has at least two deformation grooves cut into its side wall, and a deformation protrusion is formed at the upper part of each deformation groove. Each deformation protrusion has an arc-shaped surface and is used to engage with a sliding protrusion.

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