A convenient locking cap for a container having a circular neck opening

Abstract

To address the challenges of difficult assembly and production of locking covers, resulting in low yield rates and high production costs, this invention proposes a two-layer design: an outer ring and an inner ring, integrally formed. The connection point consists of several small cross-sectional ribs, allowing for easy tearing and separation. The tear-off is controllable, preventing foreign matter from entering. The assembly sequence is flexible, making top cover assembly simple. Furthermore, the controllable tear-off structure ensures greater reliability. The cover and body are tightly integrated, providing better dust protection. Additionally, the outer ring and body are secured by a ring-shaped elastic arm, simplifying locking cover assembly and enhancing stability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of locking cover, more particularly to a convenient locking cover suitable for a container with an annular neck opening. BACKGROUND

[0002] The conventional locking cover packaging mode is to cover an aluminum cover outside the rubber plug. In order to protect the rubber plug and seal the glass bottle well, and also to identify whether it has been used, the aluminum cover will have a hole once it is used. SUMMARY

[0003] Therefore, the present application solves the problems of large assembly and production difficulty, low yield guarantee and high production cost. The top cover is a two-layer top cover outer ring and top cover inner ring formed integrally. The connecting part is a plurality of small cross-sectional area ribs, which can be easily torn and separated. The fracture after tearing is controllable, no foreign matter is generated, the assembly sequence is free, the top cover is simple to assemble, the fracture position of the tearing structure is controllable, more reliable, the cover body and the top cover are combined tightly, the dustproof effect is better, the top cover outer ring and the cover body are buckled by the annular elastic arms, the locking cover is simple to assemble and has high stability.

[0004] A convenient locking cover suitable for a container with an annular neck opening, the locking cover is composed of a cover body 100, a rubber plug 200, a container 400 and a top cover 300. The rubber plug 200 is arranged inside the cover body 100, and the top cover 300 is located at the top of the cover body 100. The cover body 100 is sleeved with the neck of the container 400. The cover body 100 is a hollow structure, a center hole 101 is arranged at the center position of the top of the cover body 100, the center hole 101 is used for leaving a channel for a needle of a syringe, the bottom of the cover body 100 is an open type opening 108 for receiving the container 400, two groups of elastic arms 102 are arranged on the inner wall of the cover body 100, the rubber plug 200 is completely fixed between the container 400 and the cover body 100 through the two groups of elastic arms 102, the two groups of elastic arms 102 are reverse buckle structures, the two groups of elastic arms 102 include upper elastic arms 103 and lower elastic arms 104, the upper elastic arms 103 are clamped with the rubber plug 200, and the lower elastic arms 104 are clamped with the neck of the container 400. A position avoiding hole 107 is arranged at the top of the cover body 100 corresponding to the position of the elastic arm 102. The top cover 300 is divided into a top cover inner ring 301 and a top cover outer ring 302. The top cover inner ring 301 is an easy-to-tear structure layer. A first annular clamping hook 303 is arranged on the outer side of the top cover outer ring 302 and extends downward vertically. A second annular clamping hook 109 is arranged on the outer side of the top of the cover body 100. The first annular clamping hook 303 is clamped with the second annular clamping hook 109. The top cover outer ring 302 is clamped with the cover body 100 to form a closed whole, which achieves the effects of dust prevention and isolation from the outside.

[0005] Further, the center part of the top cover inner ring 301 is a circular structure, and the diameter of the circular structure is greater than the diameter of the center hole 101, so that the top cover inner ring 301 can shield the center hole 101 arranged at the top of the cover body 100, and achieve the dustproof and external isolation effect at the top.

[0006] Further, the top cover inner ring 301, the easy-to-tear structure of the top cover inner ring 301, and the top cover outer ring 302 are all on the same plane.

[0007] Further, the plurality of avoidance holes 107 of the cover body 100 are arranged in a ring around the center of the center hole 101, and the inner diameter of the top cover outer ring 302 is smaller than the diameter of the circumference formed by the avoidance holes 107 at the top, so that the annular surface of the top cover outer ring 302 can shield all the avoidance holes 107 at the top of the cover body 100, and achieve the dustproof and external isolation effect at the top.

[0008] Further, the circular structure of the center part of the top cover inner ring shields the center hole 101 arranged at the top of the cover body 100, and the annular surface of the top cover outer ring 302 shields all the avoidance holes at the top of the cover body 100, so that the locking cover completes the shielding of the side and the top, and forms complete isolation from the outside.

[0009] Further, the upper elastic arm 103 and the lower elastic arm 104 are both arranged in a ring, and the number is 3-8, preferably 3. The wall thickness of the part connected to the cover body 100 of the elastic arm 102 is greater than the wall thickness of the part away from the cover body 100. The part away from the cover body 100 of the elastic arm 102 has good elasticity. The size of the elastic arm 102 in the width direction is 3-20 times, preferably 10 times, the size in the thickness direction. The width of the avoidance hole 107 is greater than the width of the elastic arm 102, so as to facilitate mold forming.

[0010] Further, the material of the top cover 300 is a plastic material with certain elasticity. The selection of such elastic material can make the top cover outer ring 302 have certain elasticity. In the free state, the inner diameter of the first annular hook 303 is slightly smaller than the outer diameter of the second annular hook 109. The connection mode of the first annular hook 303 and the second annular hook 109 is interference fit or transition fit. The interference fit or transition fit is used to eliminate the gap caused by assembly tolerance. Generally, in the free state, the gap between the inner diameter of the first annular hook 303 and the outer diameter of the second annular hook 109 is -0.6-0.6mm, and more preferably -0.1mm. When the gap between the outer diameter of the first annular hook 303 and the second annular hook 109 is -0.1mm, the corresponding outer diameter of the annular hook 303 of the top cover outer ring 302 and the cover body 100 is interference fit or transition fit. When they are assembled together, they can be clamped tightly.

[0011] Further, the locking cover is a locking cover that can be opened by one hand.

[0012] Further, the top cover 300 outer ring 302 and the top cover inner ring 301 are connected by the rib position 308 group, the rib position 308 group is composed of several small cross-sectional area rib positions 308, the strength of the rib position 308 group is far less than the strength of the easy structure layer 301 and the top cover body layer 302, so that the fracture position is stable and controllable, and foreign matter will not be produced by fragmentation, and after separation, it is broken into two pieces, and cannot be restored, so as to ensure that the device is disposable, the number of rib positions 308 is 4-10, preferably 4, the fracture surface of the rib position 308 is one of rectangular, circular and elliptical, and the more preferred is rectangular, which is simple in structure and beneficial to production, the cross-sectional area of the rib position 308 is 0.02-0.8mm 2 , preferably 0.56mm 2 .

[0013] Further, the rib position 308 is arranged on the side surface of the top cover inner and outer ring, when the top cover 300 is clamped with the cover body 100, the pressing force will not be transmitted to the rib position 308, avoiding the risk of the rib position 308 being pressed off in advance.

[0014] Further, the extension of the top cover inner ring 301 is provided with a handle 309, the width of 309 is 1-5mm, preferably 3mm, which facilitates the user to grip the inner ring 301 and perform the tearing action, the top cover outer ring 302 is provided with an opening 310, the handle 309 extends to the opening 310, and the end of the handle 309 is vertically downwardly extended and provided with a third hook 305, the third hook 305 is clamped with the second annular hook 109, and the width of the handle 309 is slightly smaller than the width of the opening 310.

[0015] After the top cover 300 inner and outer rings are broken, the cover body 100 top opening cover is removed, at this time, instruments such as syringes can be used to pierce the rubber plug 200 and take out the medicine in the container 400.

[0016] Further, the rubber plug 200 is composed of a rubber plug head 201 and a rubber plug body 202, the rubber plug 200 is annular structure, the top end of the upper elastic arm 103 is engaged with the bottom surface of the rubber plug head 201, the outer diameter a of the rubber plug head 201 is greater than the diameter b of the circle formed by the top end of the upper elastic arm 103, the diameter b of the circle formed by the top end of the upper elastic arm 103 is greater than the outer diameter c of the lip of the container 400, the outer diameter c of the lip of the container 400 is greater than the diameter d of the circle formed by the top end of the lower elastic arm 104, the outer diameter a of the rubber plug head 201 is greater than the diameter b of the circle formed by the top end of the upper elastic arm 103 can ensure that the rubber plug 400 can be fixed in the cover body 100 by the upper elastic arm 103, the diameter b of the circle formed by the top end of the upper elastic arm 103 is greater than the outer diameter c of the lip of the container 400, which can avoid the lip-shaped outer edge of the container 400 extruding the upper elastic arm 103 and causing the rubber plug 200 to fall off, the outer diameter c of the lip of the container 400 is greater than the diameter d of the circle formed by the top end of the lower elastic arm 104, which can ensure that the lower elastic arm 104 can be clamped to the lip-shaped outer edge of the container 400.

[0017] Further, the neck of the container 400 is provided with a connecting surface 306 below the container body, and the top of the lower elastic arm 104 is engaged with the connecting surface 306.

[0018] Further, the elastic arm 102 includes a first assembly surface 105 and a first engagement surface 106, the angle between the first assembly surface 105 and the vertical direction is in the range of 10°-40°, and more preferably 25°, and the angle between the first engagement surface 106 and the vertical direction is in the range of 20°-50°, and more preferably 36°.

[0019] Further, the second annular clamping hook 109 of the outer side wall of the top of the cover body 100 comprises a first vertical surface 110, a second clamping surface 111 and a second vertical surface 112, the angle between the first vertical surface 110 and the vertical direction is in the range of -20-20°, in the free state, the gap between the cover body 100 and the top cover 300 near the first vertical surface 110 is -0.6-0.6mm, preferably -0.1mm, the cover body 100 and the top cover 300 near the first vertical surface 110 are in transition fit, the angle between the second clamping surface 111 and the horizontal direction is in the range of 0-40°, preferably 15°, in the free state, the gap between the cover body 100 and the top cover 300 near the second clamping surface 111 is -0.6-0.6mm, preferably -0.1mm, the cover body 100 and the top cover 300 near the second clamping surface 111 are in transition fit, when the top cover 300 is assembled, the top cover 300 and the cover body 100 can be clamped tightly without shaking, the angle between the second vertical surface 112 and the vertical direction is in the range of 0-40°, the second vertical surface 112 is a guide part, which is convenient for guiding during assembly of the top cover 300, the horizontal distance between the first vertical surface 110 and the second vertical surface 112 forms the clamping amount of the top cover 300 and the cover body 100, the clamping amount is 0.1-2mm, preferably 0.3mm, the clamping amount of the top cover 300 and the cover body 100 is large enough to clamp the top cover 300 and the cover body 100 tightly enough to fix the top cover 300 on the cover body 100, the clamping force is much larger than the force required to tear the muscle position 308, the clamping force is 2-20 times the force required to tear the muscle position, when the top cover 300 is torn by hand, the muscle position 308 is broken, the easy-to-tear structure layer inner ring 301 is separated from the cover body 100, and the outer ring 302 remains on the main body of the cover body 100.

[0020] Further, the gap between the top cover 300 and the cover body 100 near the first vertical surface 110, the gap between the top cover 300 and the cover body 100 near the second clamping surface 111, in the free state, at least one of the top cover 300 and the cover body 100 at the first vertical surface 110 and the second clamping surface 111 is in interference fit, and the relationship can be achieved that when the top cover 300 is assembled, at least one of the top cover 300 and the cover body 100 at the first vertical surface 110 and the second clamping surface 111 is clamped tightly on the cover body 100 without shaking.

[0021] Further, the cover body 100 and the top cover 300 are annular or barrel-shaped structures, which can be applied to all containers 400 with circular necks with lip-shaped outer edges, such containers 400 are also commonly used, and the circular structure makes it unnecessary to position the angle during assembly of the device, the cover body 100 and the rubber plug 200, the cover body 100 and the container 400, and the top cover 300 and the cover body 100.

[0022] Because the cover 300 and the cover body 100 snap structure is simple, therefore need not deliberately stipulate assembly order, can first with the rubber plug 200 snap after, again the cover 300 is snapped into the cover body 100;Or is according to the conventional priority assembly good cover 300 and the cover body 100 again go snap rubber plug 200 will not cause influence, can avoid the material piece scrapping caused by operator unfamiliar assembly order. The freedom of assembly order also facilitates the storage of pre-assembled material, the cover body 100 and the cover 300 can be pre-assembled into a pre-assembled material, or the rubber plug 200 can be assembled into the cover body 100 to form a pre-assembled material, and the cover 300 can be assembled into the container 400.

[0023] The beneficial effects of the present application: the cover 300 is a two-layer cover outer ring 302 and cover inner ring 301 formed integrally, the connecting part is a plurality of small cross-sectional area ribs 308, which can be easily torn and separated, the fracture is controllable after tearing, and there is no foreign matter, the assembly order is free, the cover 300 is easy to assemble, and the tearing structure 307 fracture position is controllable, more reliable, the cover body 100 and the cover 300 are combined tightly, the dustproof effect is better, and at the same time the cover outer ring 302 and the cover body 100 are locked by the annular elastic wall, the locking cover is easy to assemble and has high stability. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The whole appearance schematic view of the convenient locking cover suitable for the annular neck opening container of the present application.

[0025] Figure 2 The whole appearance schematic view of the convenient locking cover suitable for the annular neck opening container of the present application.

[0026] Figure 3 The side view of the convenient locking cover suitable for the annular neck opening container of the present application.

[0027] Figure 4 The side view of the cover body of the convenient locking cover suitable for the annular neck opening container of the present application.

[0028] Figure 5 The top view of the cover body of the convenient locking cover suitable for the annular neck opening container of the present application.

[0029] Figure 6 The sectional view of the cover body of the convenient locking cover suitable for the annular neck opening container of the present application.

[0030] Figure 7 The cover body and the rubber plug 200 snap structure schematic view of the convenient locking cover suitable for the annular neck opening container of the present application.

[0031] Figure 8This is a schematic diagram of the locking structure between the cover body and the neck of the container 400 of the convenient locking cap applicable to the annular neck opening container of the present invention.

[0032] Figure 9 This is a schematic diagram of the locking structure between the top cover and the cover body 100 of the convenient locking cap for a container with an annular neck opening according to the present invention.

[0033] Figure 10 Top view of the snap-fit ​​of the top cover and the cover body 100 of the convenient locking cap for a container with an annular neck opening according to the present invention.

[0034] Figure 11 This is a schematic diagram of the inner ring structure of the tear-off top cover of the convenient locking cap for annular neck opening containers according to the present invention.

[0035] Figure 12 This is a top view of the convenient locking cap for a container with an annular neck opening, after the inner ring of the top cap has been torn open.

[0036] Figure 13 This is a top view of the cover of the convenient locking lid of the present invention for a container with an annular neck opening.

[0037] Figure 14 This is a partial structural diagram of the locking mechanism between the top cover and the body of the convenient locking cap for a container with an annular neck opening, as described in this invention.

[0038] Explanation of main component symbols

[0039]

[0040]

[0041] The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention. Detailed Implementation Detailed Implementation Method 1

[0043] like Figure 1 The diagram shown is an overall appearance schematic of the convenient locking cap for a container with an annular neck opening according to the present invention; as shown... Figure 2 The diagram shown is an overall appearance schematic of the convenient locking cap for a container with an annular neck opening according to the present invention; as shown... Figure 3 The image shown is a side view of the convenient locking cap for a container with an annular neck opening according to the present invention; as shown... Figure 4 The image shown is a side view of the cover of the convenient locking cap for a container with an annular neck opening according to the present invention; as shown... Figure 5 The image shown is a top view of the cover of the convenient locking cap for a container with an annular neck opening according to the present invention; as shown... Figure 6The image shown is a cross-sectional view of the cover of the convenient locking cap for a container with an annular neck opening according to the present invention; as shown... Figure 7 The diagram shows the locking structure of the cover body and the rubber stopper of the convenient locking cap for a container with an annular neck opening according to the present invention; as shown... Figure 8 The diagram shows the locking structure between the cover body and the container neck of the convenient locking cap for a container with an annular neck opening, as shown in the present invention. Figure 9 The diagram shows the locking structure between the top cover and the body of the convenient locking cap for a container with an annular neck opening, as shown in the present invention. Figure 10 The image shown is a top view of the locking mechanism of the convenient locking cap for a container with an annular neck opening according to the present invention, where the top cover and the cover body are engaged. Figure 11 The diagram shown is a schematic representation of the inner ring structure of the tear-off top cover of the convenient locking cap for annular neck-opening containers according to the present invention; as shown... Figure 12 The image shown is a top view of the convenient locking cap for a container with an annular neck opening, after the inner ring of the top cap has been torn open; as shown... Figure 13 The image shown is a top view of the cover of the convenient locking cap for a container with an annular neck opening according to the present invention; as shown... Figure 14 The diagram shown is a partial structural diagram of the locking mechanism between the top cover and the body of the convenient locking cap for containers with annular neck openings according to the present invention.

[0044] A convenient locking cap for a container with an annular neck opening is provided. The locking cap consists of a cover body 100, a rubber stopper 200, a container 400, and a top cover 300. The rubber stopper 200 is placed inside the cover body 100, and the top cover 300 is located on top of the cover body 100. The cover body 100 is sleeved with the neck of the container 400. The cover body 100 is a hollow structure with a central hole 101 at the top center for providing a channel for a syringe needle. The bottom has an open opening 108 for receiving the container 400. Two sets of elastic arms 102 are provided on the inner wall of the cover body 100 to completely fix the rubber stopper 200 between the container 400 and the cover body 100. The two sets of elastic arms 102 are inverted structures. The two sets of elastic arms 102 include an upper elastic arm 103 and a lower elastic arm 104. The upper elastic arm 103 engages with the rubber stopper 200, and the lower elastic arm 104 engages with the neck of the container 400. The top of the cover 100 is provided with a clearance hole 107 corresponding to the position of the elastic arm 102. The top cover 300 is divided into two layers: an inner ring 301 and an outer ring 302. The inner ring 301 is an easy-tear structure layer. The outer ring 302 has a first annular hook 303 extending vertically downward on the outer side. The top outer side of the cover 100 is provided with a second annular hook 109. The first annular hook 303 and the second annular hook 109 engage. After the outer ring 302 and the cover 100 are engaged, they form a sealed whole, achieving the function of side dust prevention and isolation from the outside.

[0045] The center part of the top cover inner ring 301 is a circular structure, and the diameter of the circular structure is greater than the diameter of the center hole 101, so that the top cover inner ring 301 can shield the center hole 101 arranged at the top of the cover body 100, and achieve the dustproof and external isolation effect at the top.

[0046] The top cover inner ring 301, the easy-to-tear structure of the top cover inner ring 301, and the top cover outer ring 302 are all on the same plane.

[0047] The plurality of avoidance holes 107 of the cover body 100 are arranged in a ring shape with the center of the center hole 101 as the center, and the inner diameter of the top cover outer ring 302 is smaller than the diameter of the circumference formed by the avoidance holes 107 at the top, so that the annular surface of the top cover outer ring 302 can shield all the avoidance holes 107 at the top of the cover body 100, and achieve the dustproof and external isolation effect at the top.

[0048] The annular structure of the center part of the top cover inner ring shields the center hole 101 arranged at the top of the cover body 100, and the annular surface of the top cover outer ring 302 shields all the avoidance holes at the top of the cover body 100, so that the locking cover completes the shielding of the side surface and the top, and forms complete isolation from the outside.

[0049] The upper elastic arm 103 and the lower elastic arm 104 are both arranged in a ring shape, and the number is 3-8, preferably 3. The wall thickness of the part connected to the cover body 100 of the elastic arm 102 is greater than the wall thickness of the part away from the cover body 100. The elastic arm 102 away from the cover body 100 has good elasticity. The size of the elastic arm 102 in the width direction is 3-20 times, preferably 10 times, the size in the thickness direction. The width of the avoidance hole 107 is greater than the width of the elastic arm 102, so as to facilitate mold forming.

[0050] The material of the top cover 300 is a plastic material with certain elasticity. The selection of the elastic material can make the top cover outer ring 302 have certain elasticity. In the free state, the inner diameter of the first annular hook 303 is slightly smaller than the outer diameter of the second annular hook 109. The connection mode of the first annular hook 303 and the second annular hook 109 is interference fit. The interference fit mode is used to eliminate the gap caused by assembly tolerance. Generally, in the free state, the gap between the inner diameter of the first annular hook 303 and the outer diameter of the second annular hook 109 is-0.6-0.6 mm. When the gap between the outer diameter of the first annular hook 303 and the second annular hook 109 is-0.1 mm, the corresponding outer diameter of the annular hook 303 of the top cover outer ring 302 and the cover body 100 is interference fit. When they are assembled together, they can be clamped tightly.

[0051] The locking cover is a locking cover that can be opened by one hand.

[0052] The top cover 300 top cover outer ring 302 and top cover inner ring 301 by the rib position 308 group connection, rib position 308 group is composed of several small cross-sectional area rib position 308, the strength of rib position 308 group is far less than the strength of the easy structure layer 301 and the top cover body layer 302, so that the fracture position is stable and controllable, and will not appear broken and produce foreign matter, separated into two pieces, can not be restored, so as to ensure that the device is disposable, the number of rib position 308 is 4-10, preferably 4, the rib position 308 fracture surface is one of rectangular, circular and oval, more preferably rectangular, simple structure is conducive to production, the cross-sectional area of rib position 308 is 0.02-0.8mm 2 .

[0053] Rib position 308 is arranged on the side surface of the top cover inner and outer ring. When the top cover 300 is engaged with the cover body 100, the pressing force will not be transmitted to the rib position 308, avoiding the risk of the rib position 308 being pressed off.

[0054] The extension of the top cover inner ring 301 is provided with a handle 309, and the width of the handle 309 is 1-5mm, which facilitates the user to grasp the inner ring 301 and perform the tearing and pulling action. The top cover outer ring 302 is provided with an opening 310, and the handle 309 extends to the opening 310. The end of the handle 309 extends vertically downward and is provided with a third hook 305. The third hook 305 is engaged with the second annular hook 109. The width of the handle 309 is slightly smaller than the width of the opening 310.

[0055] After the top cover 300 is broken into two rings, the cover body 100 top opening cover is removed. At this time, instruments such as syringes can be used to pierce the rubber plug 200 and take out the medicine in the container 400.

[0056] The rubber plug 200 is composed of a rubber plug head 201 and a rubber plug body 202. The rubber plug 200 has an annular structure. The top end of the upper elastic arm 103 is engaged with the bottom surface of the rubber plug head 201. The outer diameter a of the rubber plug head 201 is greater than the diameter b of the circle formed by the top end of the upper elastic arm 103. The diameter b of the circle formed by the top end of the upper elastic arm 103 is greater than the outer diameter c of the lip of the container 400. The outer diameter c of the lip of the container 400 is greater than the diameter d of the circle formed by the top end of the lower elastic arm 104. The outer diameter a of the rubber plug head 201 is greater than the diameter b of the circle formed by the top end of the upper elastic arm 103, which can ensure that the rubber plug 400 can be fixed in the cover body 100 by the upper elastic arm 103. The diameter b of the circle formed by the top end of the upper elastic arm 103 is greater than the outer diameter c of the lip of the container 400, which can avoid the rubber plug 200 from falling off due to the extrusion of the lip of the container 400 on the upper elastic arm 103. The outer diameter c of the lip of the container 400 is greater than the diameter d of the circle formed by the top end of the lower elastic arm 104, which can ensure that the lower elastic arm 104 can be engaged with the lip of the container 400.

[0057] The connecting surface 306 is arranged at the lower part of the neck of the container 400 and connected with the body of the container 400.

[0058] The elastic arm 102 comprises a first assembly surface 105 and a first clamping surface 106, the angle between the first assembly surface 105 and the vertical direction is in the range of 10°-40°, and the angle between the first clamping surface 106 and the vertical direction is in the range of 20°-50°.

[0059] The second annular clamping hook 109 of the outer wall of the top part of the cover body 100 comprises a first vertical surface 110, a second clamping surface 111 and a second vertical surface 112, the angle between the first vertical surface 110 and the vertical direction is in the range of -20-20°, in the free state, the gap between the cover body 100 and the top cover 300 near the first vertical surface 110 is in the range of -0.6-0.6mm, and the cover body 100 and the top cover 300 near the first vertical surface 110 are in transition fit, the angle between the second clamping surface 111 and the horizontal direction is in the range of 0°-40°, in the free state, the gap between the cover body 100 and the top cover 300 near the second clamping surface 111 is in the range of -0.6-0.6mm, and the cover body 100 and the top cover 300 near the second clamping surface 111 are in transition fit, when the top cover 300 is assembled, the top cover 300 and the cover body 100 can be clamped tightly without shaking, the angle between the second vertical surface 112 and the vertical direction is in the range of 0-40°, the second vertical surface 112 is a guide part, which facilitates the guidance during the assembly of the top cover 300, the horizontal distance between the first vertical surface 110 and the second vertical surface 112 forms the clamping amount of the top cover 300 and the cover body 100, and the clamping amount is in the range of 0.1-2mm, the clamping amount of the top cover 300 and the cover body 100 is large enough to clamp the top cover 300 and the cover body 100 tightly, which is enough to fix the top cover 300 on the cover body 100, the clamping force is much larger than the force required to tear the muscle position 308, and the clamping force is 2-20 times the force required to tear the muscle position, when the top cover 300 is torn by hand, the muscle position 308 is broken, the inner ring 301 of the easy-to-tear structure layer is separated from the cover body 100, and the outer ring 302 remains on the main body of the cover body 100.

[0060] The gap between the top cover 300 and the cover body 100 near the first vertical surface 110 and the gap between the top cover 300 and the cover body 100 near the second clamping surface 111 are in the free state, and at least one surface of the top cover 300 and the cover body 100 at the first vertical surface 110 and the second clamping surface 111 is in interference fit, so that when the top cover 300 is assembled, at least one surface of the top cover 300 and the cover body 100 at the first vertical surface 110 and the second clamping surface 111 can clamp the top cover tightly on the cover body 100 without shaking.

[0061] The cover body 100 and the top cover 300 are annular or barrel-shaped structures, which can be applied to containers 400 with circular necks with lip-shaped outer edges. Such containers 400 are commonly used, and the circular structure eliminates the need for angle positioning during assembly. When the cover body 100 is assembled with the rubber plug 200, when the cover body 100 is assembled with the container 400, and when the top cover 300 is assembled with the cover body 100, angle positioning is not required.

[0062] Because the top cover 300 and the cover body 100 have simple clamping structures, the assembly sequence does not need to be deliberately specified. The cover body 100 can be clamped with the rubber plug 200 first, and then the top cover 300 can be clamped into the cover body 100. Or, the top cover 300 and the cover body 100 can be assembled first, and then the rubber plug 200 can be clamped, which will not affect the assembly. This can avoid the scrapping of materials due to the operator's unfamiliarity with the assembly sequence. At the same time, the freedom of assembly sequence also facilitates the storage of pre-assembled materials. The cover body 100 and the top cover 300 can be pre-assembled into a pre-assembled material, or the rubber plug 200 can be assembled into the cover body 100 to form a pre-assembled material, and the top cover 300 can be clamped and assembled after the container 400 is assembled.

[0063] The assembly steps of a convenient locking cover suitable for annular neck opening containers are as follows:

[0064] Step one: the first annular clamping hook 109 of the top cover outer ring 302 of the top cover 300 is buckled into the skirt of the second annular clamping hook 303 on the top of the cover body 100. The clamping hook of the top cover 300 is a full annular clamping hook, and angle positioning is not required. Step two: the rubber plug 200 is inserted from the bottom of the cover body 100, with the flat side of the rubber plug 200 facing the cover body 100, and passing through the two sets of elastic arms 102 inside the cover body 100 to reach the clamping predetermined position, and the upper elastic arm 103 is reset to complete the clamping. The rubber plug 200 is annular in structure, and angle positioning is not required.

[0065] Step three: the small assembly is buckled into the neck of the container 400, and the lip-shaped edge on the outside of the neck of the container 400 passes through the lower elastic arm 104 inside the cover body 100 to reach the clamping predetermined position, and the lower elastic arm 104 is reset to complete the clamping. The neck of the container 400 is annular in structure, and angle positioning is not required.

[0066] Step four: the assembly is completed, and the top cover 300 can be installed at any time point, and the installation sequence can be adjusted as needed.

[0067] The use steps of a convenient locking cover suitable for annular neck opening containers are as follows:

[0068] Step 1: Grasp the handle 309 of the inner ring 301 of the top cover, tear open the inner ring 301 of the top cover 300, and remove the cover of the rubber stopper 200. At this time, you can use a device such as a syringe to insert into the rubber stopper 200 and take out the medicine in the container 400.

[0069] Step 2: After use, the inner ring 301 of the top cover 300 has fallen off and cannot be restored, ensuring that the device is for single use only. Detailed Implementation Method 2

[0071] like Figure 1 The diagram shown is an overall appearance schematic of the convenient locking cap for a container with an annular neck opening according to the present invention; as shown... Figure 2 The diagram shown is an overall appearance schematic of the convenient locking cap for a container with an annular neck opening according to the present invention; as shown... Figure 3 The image shown is a side view of the convenient locking cap for a container with an annular neck opening according to the present invention; as shown... Figure 4 The image shown is a side view of the cover of the convenient locking cap for a container with an annular neck opening according to the present invention; as shown... Figure 5 The image shown is a top view of the cover of the convenient locking cap for a container with an annular neck opening according to the present invention; as shown... Figure 6 The image shown is a cross-sectional view of the cover of the convenient locking cap for a container with an annular neck opening according to the present invention; as shown... Figure 7 The diagram shows the locking structure of the cover body and the rubber stopper of the convenient locking cap for a container with an annular neck opening according to the present invention; as shown... Figure 8 The diagram shows the locking structure between the cover body and the container neck of the convenient locking cap for a container with an annular neck opening, as shown in the present invention. Figure 9 The diagram shows the locking structure between the top cover and the body of the convenient locking cap for a container with an annular neck opening, as shown in the present invention. Figure 10 The image shown is a top view of the locking mechanism of the convenient locking cap for a container with an annular neck opening according to the present invention, where the top cover and the cover body are engaged. Figure 11 The diagram shown is a schematic representation of the inner ring structure of the tear-off top cover of the convenient locking cap for annular neck-opening containers according to the present invention; as shown... Figure 12 The image shown is a top view of the convenient locking cap for a container with an annular neck opening, after the inner ring of the top cap has been torn open; as shown... Figure 13 The image shown is a top view of the cover of the convenient locking cap for a container with an annular neck opening according to the present invention; as shown... Figure 14 The diagram shown is a partial structural diagram of the locking mechanism between the top cover and the body of the convenient locking cap for containers with annular neck openings according to the present invention.

[0072] A convenient locking cap for a container with an annular neck opening is provided. The locking cap consists of a cover body 100, a rubber stopper 200, a container 400, and a top cover 300. The rubber stopper 200 is placed inside the cover body 100, and the top cover 300 is located on top of the cover body 100. The cover body 100 is sleeved with the neck of the container 400. The cover body 100 is a hollow structure with a central hole 101 at the top center for providing a channel for a syringe needle. The bottom has an open opening 108 for receiving the container 400. Two sets of elastic arms 102 are provided on the inner wall of the cover body 100 to completely fix the rubber stopper 200 between the container 400 and the cover body 100. The two sets of elastic arms 102 are inverted structures. The two sets of elastic arms 102 include an upper elastic arm 103 and a lower elastic arm 104. The upper elastic arm 103 engages with the rubber stopper 200, and the lower elastic arm 104 engages with the neck of the container 400. The top of the cover 100 is provided with a clearance hole 107 corresponding to the position of the elastic arm 102. The top cover 300 is divided into two layers: an inner ring 301 and an outer ring 302. The inner ring 301 is an easy-tear structure layer. The outer ring 302 has a first annular hook 303 extending vertically downward on the outer side. The top outer side of the cover 100 is provided with a second annular hook 109. The first annular hook 303 and the second annular hook 109 engage. After the outer ring 302 and the cover 100 are engaged, they form a sealed whole, achieving the function of side dust prevention and isolation from the outside.

[0073] The inner ring 301 of the top cover has a circular structure at its center, and the diameter of the circular structure is larger than the diameter of the central hole 101, so that the inner ring 301 of the top cover can cover the central hole 101 set at the top of the cover body 100, thereby achieving the function of dust prevention and isolation from the outside.

[0074] The inner ring 301 of the top cover, the easy-tear structure of the inner ring 301 of the top cover, and the outer ring 302 of the top cover are all on the same plane.

[0075] The cover body 100 has a plurality of clearance holes 107 arranged in a ring around the center hole 101. The inner diameter of the outer ring 302 of the top cover is smaller than the circumference diameter formed by the clearance holes 107 at the top, so that the outer ring 302 of the top cover can cover all the clearance holes 107 at the top of the cover body 100, thus playing the role of dust prevention and isolation from the outside at the top.

[0076] The annular structure at the center of the inner ring of the top cover shields the central hole 101 at the top of the cover body 100, and the outer ring 302 of the top cover shields all the clearance holes at the top of the cover body 100. At this time, the locking cover completes the shielding of the sides and the top, forming a complete isolation from the outside world.

[0077] The upper elastic arms 103 and the lower elastic arms 104 are arranged in a ring shape, and the number is 3-8, preferably 3; the wall thickness of the part where the elastic arms 102 are connected to the cover body 100 is greater than the wall thickness of the part where the elastic arms 102 are away from the cover body 100; the elastic arms 102 have better elasticity in the part away from the cover body 100; the size of the elastic arms 102 in the width direction is 10 times the width of the avoidance hole 107, so as to facilitate mold forming.

[0078] The material of the top cover 300 is a plastic material with certain elasticity. The selection of the elastic material can make the outer ring 302 of the top cover have certain elasticity. In the free state, the inner diameter of the first annular clasp 303 is slightly smaller than the outer diameter of the second annular clasp 109. The first annular clasp 303 and the second annular clasp 109 are connected in a transition fit. The transition fit is used to eliminate the gap caused by assembly tolerance. Generally, in the free state, the gap between the inner diameter of the first annular clasp 303 and the outer diameter of the second annular clasp 109 is -0.1 mm. When the gap between the inner diameter of the first annular clasp 303 and the outer diameter of the second annular clasp 109 is -0.1 mm, the outer diameter of the annular clasp 303 of the outer ring 302 of the top cover corresponds to the outer diameter of the cover body 100 in a transition fit. When the two are assembled together, they can be clamped tightly.

[0079] The locking cover is a locking cover that can be opened by one hand.

[0080] The outer ring 302 of the top cover 300 and the inner ring 301 of the top cover are connected by a group of rib positions 308. The group of rib positions 308 is composed of a plurality of rib positions 308 with small cross-sectional area. The strength of the group of rib positions 308 is much smaller than the strength of the easy structure layer 301 and the top cover body layer 302, so that the breaking position is stable and controllable, and foreign matter will not be generated by fragmentation. After separation, it is broken into two parts, and it cannot be restored, so as to ensure that the device is disposable. The number of rib positions 308 is 4. The breaking surface of the rib position 308 is one of rectangular, circular and elliptical. The more preferred is rectangular, which is simple in structure and beneficial to production. The cross-sectional area of the rib position 308 is 0.56 mm2.

[0081] The rib position 308 is arranged on the side surface of the inner and outer rings of the top cover. When the top cover 300 is clamped with the cover body 100, the pressing force will not be transmitted to the rib position 308, so as to avoid the risk of the rib position 308 being pressed and broken in advance.

[0082] The handle 309 is arranged at the extension of the inner ring 301 of the top cover. The width of the handle 309 is 3 mm, which facilitates the user to grasp the inner ring 301 and perform the tearing action. The outer ring 302 of the top cover is provided with an opening 310. The handle 309 extends to the opening 310. The end of the handle 309 extends vertically downward to be provided with a third clasp 305. The third clasp 305 is clamped with the second annular clasp 109. The width of the handle 309 is slightly smaller than the width of the opening 310.

[0083] When the two rings of the top cover 300 are broken, the opening cover of the body 100 is removed, and at this time, an instrument such as a syringe can be used to pierce the rubber plug 200 and take out the medicine in the container 400.

[0084] The rubber plug 200 is composed of a plug head 201 and a plug body 202, and the rubber plug 200 has a ring structure. The top end of the upper elastic arm 103 is engaged with the bottom surface of the plug head 201. The outer diameter a of the plug head 201 is greater than the diameter b of the circle formed by the top end of the upper elastic arm 103. The diameter b of the circle formed by the top end of the upper elastic arm 103 is greater than the outer diameter c of the lip of the container 400. The outer diameter c of the lip of the container 400 is greater than the diameter d of the circle formed by the top end of the lower elastic arm 104. The outer diameter a of the plug head 201 being greater than the diameter b of the circle formed by the top end of the upper elastic arm 103 ensures that the rubber plug 400 can be fixed in the body 100 by the upper elastic arm 103. The diameter b of the circle formed by the top end of the upper elastic arm 103 being greater than the outer diameter c of the lip of the container 400 can prevent the lip of the container 400 from pressing the upper elastic arm 103 and causing the rubber plug 200 to fall off. The outer diameter c of the lip of the container 400 being greater than the diameter d of the circle formed by the top end of the lower elastic arm 104 can ensure that the lower elastic arm 104 can engage with the lip of the container 400.

[0085] The neck of the container 400 is connected to the body of the container 400 at a connecting surface 306. The top of the lower elastic arm 104 is engaged with the connecting surface 306.

[0086] The elastic arm 102 includes a first assembly surface 105 and a first engagement surface 106. The angle between the first assembly surface 105 and the vertical direction is in the range of 25°. The angle between the first engagement surface 106 and the vertical direction is in the range of 36°.

[0087] The second annular clamping hook 109 of the top outer side wall of the cover body 100 comprises a first vertical surface 110, a second clamping surface 111 and a second vertical surface 112, the angle between the first vertical surface 110 and the vertical direction is in the range of -20-20°, in the free state, the gap between the cover body 100 and the top cover 300 near the first vertical surface 110 is -0.1mm, the cover body 100 and the top cover 300 near the first vertical surface 110 are in transition fit, the angle between the second clamping surface 111 and the horizontal direction is 15°, in the free state, the gap between the cover body 100 and the top cover 300 near the second clamping surface 111 is -0.1mm, the cover body 100 and the top cover 300 near the second clamping surface 111 are in transition fit, when the top cover 300 is assembled, the top cover 300 and the cover body 100 can be clamped tightly without shaking, the angle between the second vertical surface 112 and the vertical direction is in the range of 0-40°, the second vertical surface 112 is a guide part, which facilitates guiding during assembly of the top cover 300, the horizontal distance between the first vertical surface 110 and the second vertical surface 112 forms the clamping amount of the top cover 300 and the cover body 100, the clamping amount is 0.1-2mm, preferably 0.3mm, the clamping amount of the top cover 300 and the cover body 100 is large enough to clamp the top cover 300 and the cover body 100 tightly enough to fix the top cover 300 on the cover body 100, the clamping force is much larger than the force required to tear the rib position 308, the clamping force is 2-20 times the force required to tear the rib position, when the top cover 300 is torn by hand, the rib position 308 is broken, the inner ring 301 of the easy-to-tear structure layer is separated from the cover body 100, and the outer ring 302 remains on the main body of the cover body 100.

[0088] The gap between the top cover 300 and the cover body 100 near the first vertical surface 110, the gap between the top cover 300 and the cover body 100 near the second clamping surface 111, in the free state, at least one of the top cover 300 and the cover body 100 at the first vertical surface 110 and the second clamping surface 111 is in interference fit, and the relationship can achieve that at least one of the top cover 300 and the cover body 100 at the first vertical surface 110 and the second clamping surface 111 can clamp the top cover on the cover body 100 tightly without shaking when the top cover 300 is assembled.

[0089] The cover body 100 and the top cover 300 are both annular or barrel-shaped structures, which can be applied to all containers 400 with circular necks having a lip-shaped outer edge, such containers 400 are also commonly used, and the circular structure makes it unnecessary to perform angle positioning during assembly of the device, the cover body 100 and the rubber plug 200, the cover body 100 and the container 400, and the top cover 300 and the cover body 100.

[0090] The cap 300 and the cover body 100 are engaged with simple structure, so that the assembling sequence is not particularly specified. The cover body 100 can be engaged with the rubber plug 200 first, and then the cap 300 is engaged into the cover body 100. Or the cap 300 and the cover body 100 are assembled first, and then the rubber plug 200 is engaged, which will not cause any influence. The free assembling sequence can avoid the waste of materials caused by the unfamiliar assembling sequence of the operator. Meanwhile, the free assembling sequence is convenient for the storage of the pre-assembled materials. The cover body 100 and the cap 300 can be pre-assembled, or the rubber plug 200 can be assembled into the cover body 100 first, and the cap 300 can be engaged until the container 400 is assembled.

[0091] The assembling steps of the convenient locking cap suitable for the container with annular neck opening are as follows:

[0092] Step one: the first annular hook 109 of the cap outer ring 302 of the cap 300 is buckled into the skirt of the second annular hook 303 on the top of the cover body 100. The hook of the cap 300 is a whole annular hook, and does not need to be positioned at an angle. Step two: the rubber plug 200 is inserted from the bottom of the cover body 100, the flat side of the rubber plug 200 is towards the cover body 100, and the rubber plug 200 passes through the two groups of elastic arms 102 in the cover body 100 respectively to reach the predetermined position of engagement, and the upper elastic arm 103 is reset to complete the engagement. The rubber plug 200 is an annular structure, and does not need to be positioned at an angle.

[0093] Step three: the small assembly is buckled into the neck of the container 400, the lip-shaped edge on the outside of the neck of the container 400 passes through the lower elastic arm 104 in the cover body 100 to reach the predetermined position of engagement, and the lower elastic arm 104 is reset to complete the engagement. The neck of the container 400 is an annular structure, and does not need to be positioned at an angle.

[0094] Step four: the assembly is completed, and the cap 300 can be installed at any time point. The installation sequence can be adjusted according to the requirements.

[0095] The using steps of the convenient locking cap suitable for the container with annular neck opening are as follows:

[0096] Step one: the handle 309 of the cap inner ring 301 of the cap 300 is gripped, the cap inner ring 301 of the cap 300 is torn, and the rubber plug 200 is removed. At this time, an instrument such as a syringe can be used to pierce the rubber plug 200 and take out the medicine in the container 400.

[0097] Step two: after use, the cap inner ring 301 of the cap 300 is removed and cannot be restored, so that the device is ensured to be used once.

[0098] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A convenient locking cover suitable for a container with a ring-shaped neck opening, the locking cover being composed of a cover body (100), a rubber plug (200), a container (400) and a top cover (300), the rubber plug (200) being arranged inside the cover body (100), the rubber plug being ring-shaped and composed of a rubber plug head (201) and a rubber plug body (202), the top cover (300) being made of a plastic material with certain elasticity and being arranged on the top of the cover body (100), the cover body (100) being sleeved with the neck of the container (400), characterized in that: the cover body is hollow, a center hole is arranged at the center of the top of the cover body, and the bottom of the cover body is formed as an open type opening for receiving the container, and the center hole is used for providing a channel for a needle of a syringe; wherein wherein the inner wall of the cover body is provided with two groups of elastic arms, the rubber plug is completely fixed between the container and the cover body through the two groups of elastic arms, the two groups of elastic arms are reverse buckle structures and include upper elastic arms (103) and lower elastic arms (104), the upper elastic arms are engaged with the rubber plug, the lower elastic arms are engaged with the neck of the container, and the top of the cover body is provided with a position avoiding hole (107) corresponding to the positions of the two groups of elastic arms; wherein the top cover is divided into two layers of a top cover inner ring (301) and a top cover outer ring (302), the top cover inner ring is an easy-to-tear structure layer, the top cover outer ring is provided with a first ring-shaped hook (303) extending vertically downward on the outer side thereof, the cover body is provided with a second ring-shaped hook (109) engaged with the first ring-shaped hook on the outer side of the top thereof, the top cover outer ring can be engaged with the cover body to form a closed whole, so as to achieve the effects of dust prevention on the side surface and isolation from the outside; and wherein the outer diameter of the rubber plug head is a, the diameter of a circle formed by the top end of the upper elastic arms is b, the outer diameter of a lip of the container is c, the diameter of a circle formed by the top end of the lower elastic arms is d, and the following size relationship is met: a > b > c > d. The center part of the top cover inner ring (301) is circular, and the diameter of the circular structure is greater than the diameter of the center hole (101).

2. The easy open closure adapted for use with a container having a circular neck opening of claim 1 wherein: The top cover inner ring (301), the easy-to-tear structure of the top cover inner ring (301) and the top cover outer ring (302) are all on the same plane.

3. The easy open closure adapted for use with a container having a circular neck opening of claim 1 wherein: The position avoiding holes (107) of the cover body (100) are arranged in a ring shape with the center of the center hole (101) as the center, and the inner diameter of the top cover outer ring (302) is smaller than the circumferential diameter formed by the position avoiding holes (107) on the top.

4. The easy open, reclosable cap for a container having an annular neck opening of claim 1 wherein: The ring-shaped structure of the center part of the top cover inner ring (301) shields the center hole (101) arranged on the top of the cover body (100), and the ring surface of the top cover outer ring (302) shields all the position avoiding holes on the top of the cover body (100).

5. The easy open, reclosable cap for a container having a circular neck opening of claim 1 wherein: ​ 6. The easy-to-use, reclosable cap for a container having a circular neck opening of claim 1, wherein: The upper elastic arms (103) and the lower elastic arms (104) are arranged in a ring shape, and the number is 3-8; the wall thickness of the part of the elastic arms (102) connected to the cover body (100) is greater than the wall thickness of the part of the elastic arms (102) away from the cover body (100); the part of the elastic arms (102) away from the cover body (100) has better elasticity; the size of the elastic arms (102) in the width direction is 3-20 times of the size in the thickness direction; and the width of the avoiding hole (107) is greater than the width of the elastic arms (102).

7. The easy open, reclosable cap for a container having a circular neck opening of claim 1 wherein: In the free state of the top cover (300), the inner diameter of the first ring-shaped clamping hook (303) is slightly smaller than the outer diameter of the second ring-shaped clamping hook (109), and the outer diameter of the ring-shaped clamping hook 303 of the top cover outer ring (302) corresponding to the cover body (100) is in interference fit; when the two are assembled together, they can be clamped tightly.

8. The easy-to-use, reclosable cap for a container having an annular neck opening according to Claim 6, wherein: In the free state of the top cover (300), the inner diameter of the first ring-shaped clamping hook (303) is slightly smaller than the outer diameter of the second ring-shaped clamping hook (109), and the outer diameter of the ring-shaped clamping hook 303 of the top cover outer ring (302) corresponding to the cover body (100) is in interference fit; when the two are assembled together, they can be clamped tightly.

9. The easy-to-use, reclosable cap for a container having a circular neck opening of claim 1, wherein: The locking cover is a locking cover that can be opened by one hand.

10. The easy open, reclosable cap for a container having a circular neck opening of claim 1 wherein: The top cover outer ring (302) and the top cover inner ring (301) of the top cover (300) are connected through the rib group (308), the rib group (308) is composed of a plurality of ribs (308) with small cross-sectional area, the strength of the rib group (308) is much smaller than the strength of the easy structure layer 301 and the top cover body layer 302, the number of ribs (308) is 4-10, the fracture surface of the rib (308) is one of a rectangle, a circle and an ellipse, and the cross-sectional area of the rib (308) is 0.02-0.8 mm².

11. The easy open, reclosable cap for a container having a circular neck opening of claim 1 wherein: The top cover inner ring (301) is provided with a handle (309) at the extension, the width of the handle (309) is 1-5 mm, the top cover outer ring (302) is provided with an opening (310), the handle (309) extends to the opening (310), the end of the handle (309) is vertically downwardly extended to be provided with a third clamping hook (305), the third clamping hook (305) is clamped with the second ring-shaped clamping hook (109), and the width of the handle (309) is slightly smaller than the width of the opening (310).

12. The easy open, reclosable cap for a container having a circular neck opening of claim 1 wherein: The lower part of the neck of the container (400) is provided with a connecting surface (306) connected to the body of the container (400), and the top of the lower elastic arm (104) is clamped with the connecting surface (306).

13. The easy open, reclosable cap for a container having a circular neck opening of claim 1 wherein: The elastic arm (102) comprises a first assembly surface (105) and a first clamping surface (106), the angle between the first assembly surface (105) and the vertical direction is in the range of 10°-40°, and the angle between the first clamping surface (106) and the vertical direction is in the range of 20°-50°.

14. The easy open, reclosable cap for a container having a circular neck opening of claim 1 wherein: The second annular clamping hook (109) of the top outer side wall of the cover body (100) comprises a first vertical surface (110), a second clamping surface (111) and a second vertical surface (112), the first vertical surface (110) has an angle range of -20-20° with the vertical direction, in the free state, the gap between the cover body (100) and the top cover (300) near the first vertical surface (110) is -0.6-0.6mm, the cover body (100) and the top cover (300) near the first vertical surface (110) are in transition fit, the second clamping surface (111) has an angle range of 0-40° with the horizontal direction, in the free state, the gap between the cover body (100) and the top cover (300) near the second clamping surface (111) is -0.6-0.6mm, the cover body (100) and the top cover (300) near the second clamping surface (111) are in transition fit, after the top cover (300) is assembled, the top cover (300) and the cover body (100) can be clamped tightly without shaking, the second vertical surface (112) has an angle range of 0-40° with the vertical direction, the second vertical surface (112) is a guide part, which facilitates guiding during assembly of the top cover (300), the horizontal distance between the first vertical surface (110) and the second vertical surface (112) forms the clamping and clamping of the top cover (300) and the cover body (100), the clamping force formed by the clamping and clamping is greater than the force required to tear the rib (308), and the clamping force is 2-20 times the force required to tear the rib.

15. The easy open, reclosable cap for a container having a circular neck opening of claim 1 wherein: The top cover (300) and the cover body (100) are in transition fit near the first vertical surface (110), and the top cover (300) and the cover body (100) are in transition fit near the second clamping surface (111), in the free state, at least one surface of the top cover (300) and the cover body (100) at the first vertical surface (110) and the second clamping surface (111) is in interference fit, and the relationship can be achieved that at least one surface of the top cover (300) and the cover body (100) at the first vertical surface (110) and the second clamping surface (111) can be clamped tightly on the cover body (100) without shaking after the top cover (300) is assembled.

16. The easy open, reclosable cap for a container having a circular neck opening of claim 1 wherein: The cover body (100) and the top cover (300) are both annular or barrel-shaped structures, and the cover body (100) and the rubber plug (200) are assembled, the cover body (100) and the container (400) are assembled, and the top cover (300) and the cover body (100) are assembled without angle positioning.

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