A packaging container

Abstract

The utility model discloses a kind of packaging containers, comprising: container body and cover, container body, including bottle body and the bottle mouth on the bottle body, the sidewall of the bottle mouth is equipped with blocking part;Cover, its sidewall is equipped with pressing part, the sidewall of the pressing part is equipped with elastic clamping part, when the cover and the bottle mouth are mutually screwed in place, the elastic clamping part is locked with the blocking part cooperation;Wherein, the blocking part and the bottle mouth are integrally formed. The blocking part is integrally formed with the bottle mouth in the present application, so that, without adding buckle sleeve, blocking part is directly injection molded on bottle mouth, while also avoid the defect that blocking part is not formed badly, to reduce the product cost while, also improve the yield of product.

Description

Technical Field

[0001] This utility model relates to the field of packaging technology, and in particular to a packaging container. Background Technology

[0002] Traditional packaging bottles typically consist of a bottle body and a cap. The bottle body has a neck, and the cap screws onto the neck, with a locking mechanism between them. This locking mechanism includes a pressing block on the cap and a stop block located on the shoulder of the bottle body. However, in traditional manufacturing processes, the bottle body is formed by integral blow molding. Due to the small size and irregular shape of the stop block, defects are prone to occur during the blow molding process, directly leading to a low product yield and thus increasing production costs. To solve this problem, an improved solution has emerged: adding a locking sleeve, which is fitted onto the bottle neck and fixed to the shoulder of the bottle body, while the stop block and locking sleeve are integrally injection molded. While this solution solves the problem of defective blow molding of the stop block, it also introduces new drawbacks. The added locking sleeve not only increases material costs but also adds a production step to the bottle neck, correspondingly increasing labor costs. Utility Model Content

[0003] The present invention provides a packaging container designed to solve the problem of high cost caused by the addition of snap-fit ​​sleeves to existing packaging bottles.

[0004] This utility model provides a packaging container, comprising:

[0005] The container body includes a bottle body and a bottle opening provided on the bottle body, and the side wall of the bottle opening is provided with a blocking part;

[0006] The cap has a pressing part on its side wall, and the side wall of the pressing part has an elastic locking part. When the cap and the bottle mouth are screwed together in place, the elastic locking part and the blocking part cooperate to lock them together.

[0007] The blocking part is integrally formed with the bottle mouth.

[0008] In the packaging container provided by this utility model, the blocking part includes a cantilever and a blocking block. The cantilever extends radially outward from the side wall of the bottle mouth and forms the blocking block at the extended end. A gap is formed between the blocking block and the side wall of the bottle mouth for the elastic snap-fit ​​part to pass through.

[0009] In the packaging container provided by this utility model, the blocking block has a first inclined surface on the side facing the gap for guiding the sliding of the elastic snap-fit ​​part.

[0010] In the packaging container provided by this utility model, the blocking block has a blocking end face on the side facing the direction of the lid's rotation that abuts against the elastic snap-fit ​​portion.

[0011] In the packaging container provided by this utility model, the upper surface of the cantilever is provided with a ramp to guide the elastic snap-fit ​​part into the gap.

[0012] In the packaging container provided by this utility model, the side wall of the bottle mouth is provided with a support strip extending circumferentially thereon, the lower edge of the cap abuts against the upper surface of the support strip, and the cantilever extends radially outward from the side edge of the support strip.

[0013] In the packaging container provided by this utility model, one side of the pressing part is connected to the outer wall of the cover, and a gap is reserved between the side wall of the pressing part and the outer wall of the cover to provide deformation space.

[0014] In the packaging container provided by this utility model, the pressing part includes an outer sheet and an inner sheet. The upper edge of the outer sheet is connected to the outer wall of the cover, and the lower edge of the outer sheet extends toward the lower edge of the cover. The inner sheet is disposed between the inner wall of the outer sheet and the outer wall of the cover, and the elastic snap-fit ​​part is disposed at the lower edge of the inner sheet. When a pressing force is applied to the outer sheet, the outer wall of the blocking part abuts against the inner wall of the outer sheet.

[0015] In the packaging container provided by this utility model, the elastic snap-fit ​​part has a second inclined surface on the side wall facing away from the cover for guiding the sliding of the blocking block.

[0016] In the packaging container provided by this utility model, the bottle body has a shoulder, and the cap body is provided with a skirt that is circumferentially arranged around its outer side wall. The skirt is attached to the surface of the shoulder and the skirt is provided with a relief groove to avoid the pressing part. The groove edge of the relief groove adjacent to the lower edge of the pressing part is recessed to form an anti-pinch step.

[0017] In the packaging container provided by this utility model, two pressing parts are symmetrically arranged on both sides of the side wall of the cap, and two blocking parts are symmetrically arranged on both sides of the side wall of the bottle mouth.

[0018] In the packaging container provided by this utility model, the bottle body is blow molded.

[0019] In the packaging container provided by this utility model, the top of the lid is provided with a stacking groove that matches the shape of the bottom of the bottle.

[0020] In the packaging container provided by this utility model, the inner sidewall of the cap is provided with a first internal thread and a second internal thread, and the outer sidewall of the bottle mouth is provided with a first external thread and a second external thread. The first internal thread is screwed into the first external thread, and the second internal thread is screwed into the second external thread. The thread travel of the first internal thread and the first external thread and the thread travel of the second internal thread and the second external thread are configured such that the relative rotation angle between the cap and the bottle mouth is in the range of 45°-90°.

[0021] This utility model provides a packaging container, which includes a container body and a cap. The cap has a pressing part on its side wall and an elastic snap-fit ​​part on its side wall. The container body includes a bottle body and a bottle mouth. The bottle mouth has a blocking part on its side wall corresponding to the elastic snap-fit ​​part. When the cap and the bottle mouth are screwed together, the elastic snap-fit ​​part and the blocking part cooperate to lock the cap and the container body. The blocking part is integrally formed with the bottle mouth. In this way, there is no need to add a buckle sleeve. The blocking part is directly injection molded on the bottle mouth, which also avoids the defect of poor molding of the blocking part. Thus, the product cost is reduced and the product yield is improved. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the packaging container according to an embodiment of the present invention is shown;

[0024] Figure 2 An exploded view of the packaging container according to an embodiment of this utility model is shown;

[0025] Figure 3 Showing Figure 2 Enlarged schematic diagram of part A;

[0026] Figure 4 Showing Figure 2 Enlarged schematic diagram of part B;

[0027] Figure 5 This invention presents a cross-sectional schematic diagram showing the elastic buckle of the packaging container entering the gap of the blocking part according to an embodiment of the present invention;

[0028] Figure 6 This invention presents a cross-sectional schematic diagram showing the elastic buckle of the packaging container in an embodiment of the present invention being positioned at the blocking end face of the blocking part;

[0029] Figure 7A schematic diagram showing the bottom of the lid of the packaging container according to an embodiment of the present invention is provided.

[0030] Figure 8 Showing Figure 7 Enlarged schematic diagram of part C;

[0031] Figure 9 This invention presents a cross-sectional schematic diagram of the lid of the packaging container according to an embodiment of the present invention;

[0032] Figure 10 Showing Figure 9 Enlarged schematic diagram of part D;

[0033] Figure label:

[0034] 1. Container body; 11. Bottle body; 12. Bottle mouth; 13. Blocking part; 131. Cantilever; 132. Blocking block; 133. Gap; 134. First inclined surface; 135. Blocking end face; 136. Slope; 14. Support bar; 15. Shoulder; 161. First external thread; 162. Second external thread; 2. Cap body; 21. Pressing part; 211. Outer sheet; 212. Inner sheet; 22. Elastic snap-fit ​​part; 221. Second inclined surface; 23. Skirt; 231. Clearance groove; 232. Anti-pinch step; 241. First internal thread; 242. Second internal thread; 25. Stacking groove. Detailed Implementation

[0035] 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, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0036] The directional terms used in this invention, such as "up," "down," "front," "back," "left," "right," "inner," "outer," and "side," are merely for reference to the accompanying drawings. Therefore, the directional terms used are for explanation and understanding of this invention, and not for limiting it. Furthermore, in the accompanying drawings, structures that are similar or identical are indicated by the same reference numerals.

[0037] Reference Figures 1-10This utility model provides a packaging container, including: a container body 1 and a cap 2. The container body 1 includes a bottle body 11 and a bottle mouth 12 disposed on the bottle body 11. The bottle mouth 12 has a blocking part 13 on its side wall. The cap 2 has a pressing part 21 on its side wall. The pressing part 21 has an elastic locking part 22 on its side wall. When the cap 2 and the bottle mouth 12 are screwed together, the elastic locking part 22 and the blocking part 13 cooperate to lock together. The blocking part 13 is integrally formed with the bottle mouth 12.

[0038] Specifically, the container body 1 of the packaging container includes a bottle body 11 and a bottle mouth 12. The bottle body 11 is a hollow, flat cylindrical container, and the bottle mouth 12 is a short-mouth structure with an outer diameter smaller than the outer diameter of the shoulder 15 of the bottle body 11. The side wall of the bottle mouth 12 protrudes outward to form a blocking part 13. The cap 2 is a closed-top round cap structure, and its side wall is provided with a pair of symmetrical pressing parts 21. The pressing parts 21 can be of various shapes and structures, such as a partially inwardly recessed elastic thin-walled area. Of course, it is understood that other structures are also possible, and no limitation is made here. The inner wall of the pressing part 21 is provided with an elastic locking part 22 protruding towards the central axis of the cap 2. When the cap 2 is screwed to the bottle mouth 12, the elastic locking part 22 slides along the outer wall of the bottle mouth 12 until it contacts the blocking part 13. At this time, continuing to screw the cap 2 will force the elastic locking part 22 to undergo elastic deformation and pass over the blocking part 13. Then the elastic locking part 22 rebounds and engages with the blocking end face 135 of the blocking part 13 to lock it. At the same time, the internal thread of the cap 2 and the external thread of the bottle mouth 12 are fully engaged to achieve a seal. Since the blocking part 13 and the bottle mouth 12 are integrally molded by injection molding, their dimensional accuracy is high and there is no material shortage defect common in blow molding process, which ensures the engagement stability of the elastic locking part 22 and the blocking part 13. At the same time, by eliminating the independent snap sleeve structure, material costs are reduced and the production process is simplified, ultimately achieving the dual effect of improving yield and reducing costs.

[0039] In this embodiment, compared to traditional blow molding, injection molding can more accurately realize the small-sized and irregularly shaped blocking part 13 structure, completely solving the problem of poor filling or deformation caused by uneven material stretching during blow molding, thereby significantly improving product yield. At the same time, this solution eliminates the independent snap-fit ​​sleeve structure in the traditional improved solution, which not only reduces additional material consumption and eliminates the need for snap-fit ​​sleeve assembly, but also simplifies the production process, thereby reducing the overall production cost.

[0040] Reference Figure 1-6In one embodiment, the blocking portion 13 includes a cantilever 131 and a blocking block 132. The cantilever 131 extends radially outward from the sidewall of the bottle opening 12 and forms the blocking block 132 at its extended end. A gap 133 is formed between the blocking block 132 and the sidewall of the bottle opening 12 for the elastic latching portion 22 to pass through. Specifically, the blocking portion 13 is composed of a cantilever 131 and a blocking block 132. The cantilever 131 is a strip-shaped thin-walled structure extending radially outward from the sidewall of the bottle opening 12, with its extension direction perpendicular to the axis of the bottle opening 12. The end of the cantilever 131 is bent upward to form a rectangular blocking block 132. The end face of the rear end of the blocking block 132 is a blocking end face 135 used to restrict the retraction of the elastic latching portion 22. The length design of the cantilever 131 results in a gap 133 between the blocking block 132 and the sidewall of the bottle opening 12 with a width slightly larger than the thickness of the elastic latching portion 22. During the screwing of the cap 2, the elastic locking part 22 first contacts the guide surface of the blocking block 132. The guide surface is the inclined surface or arc surface of the blocking block 132 near the bottle mouth 12. The elastic locking part 22 is squeezed by the guide surface and elastically contracts towards the central axis of the bottle mouth 12. At the same time, it slides along the guide surface until it completely enters the gap 133 between the cantilever 131 and the side wall of the bottle mouth 12. When the cap 2 is screwed in place, the elastic locking part 22 passes through the gap 133 and springs back to the side of the blocking block 132 away from the bottle mouth 12. At this time, the vertical end face of the blocking block 132 forms the blocking end face 135. The elastic locking part 22 abuts against the blocking end face 135 to form a lock. When unlocking is required, pressing the pressing part 21 of the cap 2 causes the elastic locking part 22 to elastically deform towards the central axis of the bottle mouth 12, causing it to disengage from the blocking end face 135 and re-enter the gap 133 between the cantilever 131 and the side wall of the bottle mouth 12. At this time, rotating the cap 2 in the opposite direction will cause the elastic locking part 22 to slide out along the gap 133, completing the unlocking of the cap 2. The elastic deformation capability of the cantilever 131 allows the blocking block 132 to expand slightly when the elastic locking part 22 enters the gap 133, avoiding rigid interference. After the elastic locking part 22 is in place, the blocking block 132 returns to its original position, ensuring the reliability of the locking. This structure, through the cooperation of the cantilever 131 and the blocking block 132, provides a precise insertion channel for the elastic locking part 22 and achieves a smooth locking action through the squeezing and guiding action of the guide surface. At the same time, the one-piece molded cantilever 131 avoids the assembly error of the split buckle sleeve.

[0041] Reference Figure 3In this embodiment, the blocking block 132 has a first inclined surface 134 on the side facing the gap 133 to guide the sliding of the elastic locking part 22. Specifically, the blocking block 132 has a first inclined surface 134 on the side facing the gap 133. The first inclined surface 134 extends obliquely from the top of the blocking block 132 toward the interior of the gap 133, forming a smooth transition guide structure. When the cap 2 is screwed, the elastic locking part 22 first contacts the first inclined surface 134 and gradually contracts inward under the guidance of the first inclined surface 134, so that the elastic locking part 22 can smoothly slide into the gap 133. At the same time, the inclination angle of the first inclined surface 134 matches the contact surface of the elastic locking part 22, ensuring that the direction of the squeezing force is toward the central axis of the bottle mouth 12, reducing the screwing resistance. The design of the first inclined surface 134 optimizes the smoothness of the locking process, reduces the contact stress between the elastic locking part 22 and the blocking part 13, and improves the reliability of long-term use.

[0042] Reference Figure 4 In this embodiment, the blocking block 132 has a blocking end face 135 on the side facing the direction of rotation of the cover 2, which abuts against the elastic locking part 22. Specifically, the blocking block 132 has a vertically extending blocking end face 135 on the side facing the direction of rotation of the cover 2, and the blocking end face 135 forms an approximately right-angle structural transition with the main body of the blocking block 132. When the cover 2 is screwed into place, the elastic locking part 22 forms a surface contact with the blocking end face 135 after rebounding. The vertical orientation of the blocking end face 135 effectively prevents the elastic locking part 22 from displacing when rotating in the opposite direction. At the same time, the width of the blocking end face 135 is not less than the contact surface width of the elastic locking part 22, ensuring uniform force during locking. During the unlocking process, when the pressing part 21 is pressed and the elastic locking part 22 is disengaged from the blocking end face 135, the vertically positioned blocking end face 135 will not interfere with the radial movement of the elastic locking part 22. The blocking end face 135 is integrally formed with the blocking block 132, ensuring its surface flatness and perpendicularity, thereby ensuring precise fit with the elastic locking part 22. The design of this blocking end face 135 achieves a reliable locking function while avoiding the self-locking failure problem that may occur with traditional inclined blocking structures, thus improving the safety of the packaging container.

[0043] Reference Figure 3In this embodiment, the upper surface of the cantilever 131 is provided with a ramp 136 to guide the elastic locking part 22 into the gap 133. Specifically, the upper surface of the cantilever 131 is provided with a ramp 136 structure that gradually rises upward. When the cap 2 is screwed, the elastic locking part 22 first contacts the starting end of the ramp 136. As the screwing action continues, the ramp 136 gradually lifts the elastic locking part 22 and guides it into the gap 133 between the cantilever 131 and the side wall of the bottle mouth 12. The inclination angle of the ramp 136 is set to 10°-25°, which ensures sufficient lifting height for the elastic locking part 22 to smoothly enter the gap 133, while avoiding an increase in screwing resistance due to an excessively large angle. The ramp 136 structure significantly reduces the collision resistance when the elastic locking part 22 enters the gap 133 through a progressive lifting method, making the locking operation of the cover 2 more effortless and smooth. At the same time, the ramp 136 and the cantilever 131 are integrally formed, and its surface smoothness ensures low frictional contact with the elastic locking part 22. Compared with the cantilever 131 structure without the ramp 136 design, this solution reduces the tightening force of the cover 2 and effectively improves the user experience.

[0044] Reference Figure 3 and Figure 4 In one embodiment, the sidewall of the bottle opening 12 is provided with a support strip 14 extending circumferentially therein. The lower edge of the cap 2 abuts against the upper surface of the support strip 14, and the cantilever 131 extends radially outward from the side edge of the support strip 14. Specifically, the sidewall of the bottle opening 12 is provided with a partial support strip 14 extending circumferentially therein. The length of the support strip 14 is 1 / 4 to 1 / 3 of the circumference of the bottle opening 12, and it is located below the blocking part 13. The upper surface of the support strip 14 is a horizontal plane with a thickness of 1-2 mm, providing a stable support surface for the lower edge of the cap 2. The cantilever 131 extends radially outward from the side edge of the support strip 14, and its root smoothly transitions to the side edge of the support strip 14. When the cap 2 is screwed in place, the lower edge of the cap 2 is in complete contact with the upper surface of the support strip 14, forming an axial support relationship. Simultaneously, the outward extension of the cantilever 131 from the side edge of the support strip 14 naturally creates the gap 133 between the blocking part 13 and the side wall of the bottle mouth 12. This support strip 14 not only provides a reliable axial positioning reference for the cap 2 but also enhances the structural strength of the cantilever 131 root, effectively preventing breakage during repeated use. Compared to a design without the support strip 14, this solution improves the service life of the cantilever 131. Furthermore, the integral molding of the support strip 14, the side wall of the bottle mouth 12, and the cantilever 131 ensures structural continuity and dimensional accuracy among the three components.

[0045] Reference Figure 8In one embodiment, one side of the pressing part 21 is connected to the outer wall of the cover 2, and a gap is reserved between the side wall of the pressing part 21 and the outer wall of the cover 2 to provide deformation space. Specifically, one side of the pressing part 21 is connected to the outer wall of the cover 2, and the other side is a free end. A certain gap is reserved between the side wall of the pressing part 21 and the outer wall of the cover 2 to form an elastic deformation space. When the cover 2 is pressed to unlock, the free end of the pressing part 21 can elastically deform towards the central axis of the cover 2, causing the elastic locking part 22 to disengage from the blocking end face 135. At the same time, the connecting end of the pressing part 21 serves as a fulcrum to ensure the stability and resilience of the pressing action. The width design of the deformation space allows the pressing part 21 to have sufficient deformation stroke, which ensures both the operating feel and avoids plastic fatigue caused by excessive deformation.

[0046] Reference Figure 8 In one embodiment, the pressing part 21 includes an outer sheet 211 and an inner sheet 212. The upper edge of the outer sheet 211 is connected to the outer side wall of the cover 2, and the lower edge of the outer sheet 211 extends toward the lower edge of the cover 2. The inner sheet 212 is disposed between the inner side wall of the outer sheet 211 and the outer side wall of the cover 2. The elastic snap-fit ​​part 22 is disposed on the lower edge of the inner sheet 212. When a pressing force is applied to the outer sheet 211, the outer side wall of the blocking part 13 abuts against the inner side wall of the outer sheet 211. Specifically, the pressing part 21 includes an outer piece 211 and an inner piece 212. The upper edge of the outer piece 211 is connected to the outer wall of the cover 2, and its lower edge extends toward the lower edge of the cover 2, forming a suspended piece structure. The inner piece 212 is located between the inner wall of the outer piece 211 and the outer wall of the cover 2, and its lower edge is provided with the elastic locking part 22. When the outer piece 211 is pressed, the inner wall of the outer piece 211 abuts against the outer wall of the blocking part 13, forming a hard limiting structure to prevent excessive pressing from causing the outer piece 211 or the inner piece 212 to break. The inner piece 212 deforms when pressed, causing the elastic locking part 22 to disengage from the blocking end face 135 to unlock. The contact between the outer piece 211 and the blocking part 13 limits the overall deformation and protects the structural integrity of the pressing part 21. This staggered double-piece design ensures sufficient pressing stroke for reliable unlocking and avoids the risk of plastic deformation through mechanical limiting, thus improving the durability of the pressing part 21. At the same time, the space between the outer piece 211 and the inner piece 212 provides a buffer area for pressing deformation, making the operation feel softer.

[0047] Reference Figure 8In this embodiment, the elastic locking part 22 has a second inclined surface 221 on the side wall facing away from the cap 2 to guide the sliding of the blocking block 132. Specifically, the elastic locking part 22 has a second inclined surface 221 on the side wall facing away from the cap 2, and the second inclined surface 221 extends obliquely. When the cap 2 is tightened, the first inclined surface 134 of the blocking block 132 and the second inclined surface 221 of the elastic locking part 22 cooperate with each other to form a sliding guiding relationship at the moment of contact, so that the elastic locking part 22 smoothly retracts towards the center of the bottle mouth 12 under the squeezing action of the blocking block 132. The inclination angle of the second inclined surface 221 matches that of the first inclined surface 134, ensuring that the force transmission direction is towards the axis of the bottle mouth 12 when the two are in contact, reducing the lateral component force during the tightening process. This inclined surface cooperation structure makes the retraction action of the elastic locking part 22 smoother and avoids the sudden stress that may be generated by the traditional right-angle locking structure. During the unlocking process, the second inclined surface 221 does not participate in the action; only the first inclined surface 134 guides the elastic locking part 22 to retract, ensuring the simplicity of the unlocking operation. Through the design of the second inclined surface 221, the tightening force of the cover 2 is further reduced, and wear during repeated tightening is significantly reduced.

[0048] In one embodiment, the bottle body 11 has a shoulder 15, and the cap 2 has a skirt 23 circumferentially arranged around its outer side wall. The skirt 23 is attached to the surface of the shoulder 15, and the skirt 23 has a relief groove 231 that avoids the pressing part 21. The relief groove 231 has a recessed edge near the lower edge of the pressing part 21 forming an anti-pinch step 232. Specifically, the bottle body 11 has an outwardly extending shoulder 15 below the bottle mouth 12, and the upper surface of the shoulder 15 is a horizontal plane. The outer side wall of the cap 2 has a downwardly extending skirt 23, which is continuously distributed circumferentially along the cap 2 and adheres to the upper surface of the shoulder 15. The skirt 23 has a relief groove 231 corresponding to the position of the pressing part 21, and the width of the relief groove 231 is greater than the width of the pressing part 21 to provide operating space. The recessed edge of the relief groove 231 adjacent to the lower edge of the pressing part 21 forms an anti-pinch step 232. This recessed structure increases the vertical distance between the edge of the relief groove 231 and the lower edge of the pressing part 21, creating an anti-pinch safety gap 133. When the user presses the pressing part 21, due to the recessed design of the anti-pinch step 232, sufficient space is always maintained between the lower edge of the pressing part 21 and the edge of the relief groove 231, preventing the possibility of fingers being pinched. The recessed depth of the anti-pinch step 232 can be 2-3mm, ensuring an effective anti-pinch gap is maintained at any pressing angle. This structure, through a simple recessed step design, completely solves the safety problem of easy finger pinching around the pressing part 21 of traditional packaging containers without affecting the pressing operation.

[0049] Reference Figure 7 and Figure 8In one embodiment, the inner wall of the cap 2 is provided with a first internal thread 241 and a second internal thread 242, and the outer wall of the bottle opening 12 is provided with a first external thread 161 and a second external thread 162. The first internal thread 241 is screwed into the first external thread 161, and the second internal thread 242 is screwed into the second external thread 162. The thread travel of the first internal thread 241 and the first external thread 161 and the thread travel of the second internal thread 242 and the second external thread 162 are configured such that the relative rotation angle between the cap 2 and the bottle opening 12 is within the range of 45°-90°. Specifically, the inner wall of the cap 2 is provided with opposing first internal threads 241 and second internal threads 242, and the helical directions of the two threads are the same and the pitch is equal. The outer wall of the bottle opening 12 is correspondingly provided with the first external thread 161 and the second external thread 162. When the cap 2 is screwed to the bottle opening 12, the first internal thread 241 engages with the first external thread 161, and the second internal thread 242 engages with the second external thread 162 simultaneously, forming a double-thread synchronous guiding structure. The thread stroke length of the first internal thread 241 and the second internal thread 242 is configured such that the relative rotation angle between the cap 2 and the bottle opening 12 is 45°-90° to complete the transition from complete separation to complete locking. The pitch of this double-thread structure is twice that of a conventional single-thread structure, allowing users to quickly complete the opening and closing of the cap 2 with only half a turn, greatly improving ease of use. At the same time, the symmetrical force design of the double threads avoids the off-center load problem when screwing with a single thread, ensuring the alignment of the cap 2 and the bottle opening 12. The first internal thread 241 and the second internal thread 242 are symmetrically distributed at 180° on the inner side of the cap 2, which not only ensures the balance of screwing but also optimizes the operating efficiency by shortening the rotation stroke, making it particularly suitable for packaging container applications that require frequent opening and closing.

[0050] Reference Figure 2 In this embodiment, two pressing parts 21 are symmetrically arranged on both sides of the sidewall of the cap 2, and two blocking parts 13 are symmetrically arranged on both sides of the sidewall of the bottle mouth 12. Specifically, two pressing parts 21 are symmetrically arranged on both sides of the sidewall of the cap 2, and the two pressing parts 21 are distributed at 180° opposite each other. Each pressing part 21 is connected to an independent elastic locking part 22. Two blocking parts 13 are correspondingly arranged on both sides of the sidewall of the bottle mouth 12. The positions of the two blocking parts 13 are precisely aligned with the pressing parts 21, so that when the cap 2 is screwed into place, the two elastic locking parts 22 can simultaneously form a locking engagement with the corresponding blocking parts 13. This double-sided symmetrical layout makes the cap 2 subjected to balanced force and avoids the problem of uneven load caused by locking on one side.

[0051] In this embodiment, the bottle body 11 is blow-molded. Specifically, the container body 1 is manufactured using a two-step injection-blow molding process: first, the blocking part 13 and the bottle mouth 12 are integrally molded into a preform using injection molding, with a blow-molding extension area reserved on the side wall of the preform; then, the preform is placed in a blow molding mold, and the preform is extended into a bottle body 11 with a predetermined shape by high-pressure gas expansion. This process combines the precision of injection molding (ensuring the structural integrity of the blocking part 13) with the economy of blow molding (achieving thin-walled bottle body 11).

[0052] Reference Figure 2 In this embodiment, the top of the cap 2 is provided with a stacking groove 25 that matches the bottom shape of the bottle 11. The top center of the cap 2 has a stacking groove 25 that matches the bottom contour of the bottle 11, with a groove depth of 3-5mm. When multiple packaging containers are stacked vertically, the bottom of the bottle 11 of the upper container can be tightly embedded into the groove of the cap 2 of the lower container, forming a stable multi-layer stacking structure. The stacking height can reach multiple layers without tipping over. This stacking structure is particularly suitable for warehousing and shelf display scenarios, while the anti-slip design of the groove prevents relative sliding during transportation.

[0053] Furthermore, the packaging container in this embodiment adopts a hidden button design, with two pressing parts 21 symmetrically arranged on the left and right sides of the side wall of the lid 2, and concealed by the circumferentially extending skirt 23 structure. When viewed from the front of the packaging container, the skirt 23 and the main body of the lid 2 form a continuous and smooth outer contour, and the location of the pressing parts 21 is concealed, so that the appearance of the container maintains a simple and unified visual effect.

[0054] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A packaging container, characterized in that, include: The container body includes a bottle body and a bottle opening provided on the bottle body, and a blocking part is provided on the side wall of the bottle opening; The cap has a pressing part on its side wall, and the side wall of the pressing part has an elastic locking part. When the cap and the bottle mouth are screwed together in place, the elastic locking part and the blocking part cooperate to lock them together. The blocking part is integrally formed with the bottle mouth.

2. The packaging container according to claim 1, characterized in that, The blocking part includes a cantilever and a blocking block. The cantilever extends radially outward from the side wall of the bottle opening and forms the blocking block at the end of the extension. A gap is formed between the blocking block and the side wall of the bottle opening for the elastic snap-fit ​​part to pass through.

3. The packaging container according to claim 2, characterized in that, The blocking block has a first inclined surface on the side facing the gap for guiding the sliding of the elastic locking part.

4. The packaging container according to claim 3, characterized in that, The blocking block has a blocking end face on the side facing the direction of the cover's rotation that abuts against the elastic snap-fit ​​portion.

5. The packaging container according to claim 2, characterized in that, The upper surface of the cantilever is provided with a ramp to guide the elastic locking part into the gap.

6. The packaging container according to claim 2, characterized in that, The bottle opening has a support strip extending circumferentially along its side wall, the lower edge of the cap abuts against the upper surface of the support strip, and the cantilever extends radially outward from the side edge of the support strip.

7. The packaging container according to any one of claims 1-6, characterized in that, One side of the pressing part is connected to the outer wall of the cover, and a gap is reserved between the side wall of the pressing part and the outer wall of the cover to provide deformation space.

8. The packaging container according to claim 7, characterized in that, The pressing part includes an outer sheet and an inner sheet. The upper edge of the outer sheet is connected to the outer wall of the cover, and the lower edge of the outer sheet extends toward the lower edge of the cover. The inner sheet is disposed between the inner wall of the outer sheet and the outer wall of the cover, and the elastic snap-fit ​​part is disposed on the lower edge of the inner sheet. When a pressing force is applied to the outer sheet, the outer wall of the blocking part abuts against the inner wall of the outer sheet.

9. The packaging container according to claim 8, characterized in that, The elastic snap-fit ​​part has a second inclined surface on the side wall opposite to the cover body for guiding the sliding of the blocking block.

10. The packaging container according to claim 1, characterized in that, The bottle body has a shoulder, and the cap body has a skirt circumferentially arranged around its outer side wall. The skirt covers the surface of the shoulder and has a relief groove to avoid the pressing part. The relief groove, adjacent to the lower edge of the pressing part, has a recessed edge forming an anti-pinch step; and / or Two pressing portions are symmetrically arranged on both sides of the cap sidewall, and two blocking portions are symmetrically arranged on both sides of the bottle mouth sidewall; and / or, The bottle body is blow-molded; and / or, The top of the cap is provided with a stacking groove that matches the shape of the bottom of the bottle; and / or, The inner wall of the cap is provided with a first internal thread and a second internal thread, and the outer wall of the bottle opening is provided with a first external thread and a second external thread. The first internal thread is screwed into the first external thread, and the second internal thread is screwed into the second external thread. The thread travel of the first internal thread and the first external thread and the thread travel of the second internal thread and the second external thread are configured such that the relative rotation angle between the cap and the bottle opening is in the range of 45°-90°.

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