Plastic elastic piece, pump body assembly and cosmetic container

Abstract

The utility model discloses a plastic elastic part, a pump body assembly and a cosmetic container. The plastic elastic part comprises an elastic part body and at least one first stop structure. The first stop structure is arranged on the outer side wall of the elastic piece body, and the first stop structure is arranged in the length direction of the elastic piece body; in the demolding process of the plastic elastic part, the first stop structure limits the circumferential rotation of the elastic part body; the first stop structure is arranged on the outer side wall of the elastic part body, so that in the demolding process of the plastic elastic part, the first stop structure can abut against the limiting structure on the inner wall of the mold in a limiting mode, the plastic elastic part can be prevented from being driven to rotate when the twisted tooth mold rotates and retreats, the mold pressing risk occurring in the demolding process of the plastic elastic part is reduced, and the demolding quality of the plastic elastic part is improved. And the demolding effect of the plastic elastic part is improved.

Description

Technical Field

[0001] The present application relates to the technical field of cosmetics, and in particular to a plastic elastic member, a pump assembly, and a cosmetic container. Background Art

[0002] With the development of society, cosmetics are becoming increasingly common in people's lives, and cosmetics are usually stored in cosmetic containers. Pump-type cosmetic containers typically pump out the cosmetic material by pressing a button. Pump-type cosmetic containers are widely used due to their ease of operation. However, traditional pump-type cosmetic containers are very inconvenient because the amount of material discharged depends on the user's pressure during use.

[0003] Therefore, it is necessary to provide an improved plastic elastic member, pump assembly and cosmetic container to solve at least one of the above-mentioned problems in the prior art. Utility Model Content

[0004] The present application provides a plastic elastic part, comprising an elastic part body and at least one first stop structure; the first stop structure is arranged on the outer side wall of the elastic part body, and the first stop structure is arranged along the length direction of the elastic part body; during the injection molding and demolding process of the plastic elastic part, the first stop structure is used to limit the circumferential rotation of the elastic part body.

[0005] Furthermore, the first stopping structure is recessed in the outer wall of the elastic member body.

[0006] Furthermore, the first stopping structure is linear, arc-shaped or lightning-shaped.

[0007] Furthermore, it also includes a second stopping structure; the second stopping structure is arranged to protrude from the first end of the elastic member body.

[0008] Furthermore, the second stopping structure is a screw thread structure, which is arranged along the circumference of the first end and extends radially along the elastic member body, and the outer diameter of the screw thread is not greater than the outer diameter of the elastic member body.

[0009] Furthermore, the elastic member body is a bellows structure.

[0010] Furthermore, a first abutting portion is provided at the first end of the elastic member body; a second abutting portion is provided at the second end of the elastic member body; and the second stopping structure is provided on the first abutting portion.

[0011] The present application also provides a pump body assembly, including a coaxially arranged pump rod, a fixed bushing, a pump body assembly and the plastic elastic member as described above; the connecting end of the pump rod is fixedly sleeved on the mating end of the pump body assembly, and the fixed bushing is sleeved between the pump body assembly and the pump rod; the plastic elastic member is sleeved on the pump rod and the two ends of the plastic elastic member are respectively abutted against the pump rod and the fixed bushing.

[0012] Furthermore, a first limiting portion is provided on the pump rod; a second limiting portion is provided on the fixed bushing to cooperate with the first limiting portion; when the pump rod is in use and moves to the maximum stroke, the first limiting portion and the second limiting portion are in limiting contact with each other; when the pump rod is in the initial state, the first limiting portion and the second limiting portion are separated under the elastic force of the plastic elastic part.

[0013] The present application also provides a cosmetic container, comprising a container body, a connecting piece, a pressing piece, a protective cover and the pump body assembly as described above; the pump body assembly is at least partially installed in the container body, the connecting piece is screwed to the container body to fix the pump body assembly on the container body, the pressing piece is connected to the pressing end of the pump rod, and the protective cover can be detachably covered on the connecting piece; under the drive of external force, the pressing piece can push the pump rod to move axially along the fixed bushing.

[0014] The plastic elastic member provided in this application has at least the following technical effects:

[0015] The plastic elastic part in the present application includes an elastic part body and a stop part; the stop part includes at least one first stop structure; the first stop structure is arranged on the outer side wall of the elastic part body, and the first stop structure is arranged along the length direction of the elastic part body; the present application sets a first stop structure on the outer side wall of the elastic part body, and during the demolding process of the plastic elastic part, the first stop structure of the plastic elastic part can offset the limiting structure of the inner wall of the mold, which can prevent the plastic elastic part from rotating when the threaded mold rotates and exits, which can reduce the risk of compression molding when the plastic elastic part is demolded, and improve the demolding effect of the plastic elastic part. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions and advantages of the embodiments of the present application or the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1: Schematic diagram of the overall structure of the plastic elastic member provided in an embodiment of the present application;

[0018] Figure 2 : A schematic diagram of the overall structure of another plastic elastic member provided in an embodiment of the present application;

[0019] Figure 3 : A cross-sectional view of a plastic elastic member provided in an embodiment of the present application;

[0020] Figure 4 : A top view of a plastic elastic member provided in an embodiment of the present application;

[0021] Figure 5 : Bottom view of the plastic elastic member provided in an embodiment of the present application;

[0022] Figure 6 : A schematic diagram of the overall structure of the pump assembly provided in an embodiment of the present application;

[0023] Figure 7 : An exploded view of a pump assembly provided in an embodiment of the present application;

[0024] Figure 8 : A cross-sectional view of a pump assembly provided in an embodiment of the present application;

[0025] Figure 9 : A schematic structural diagram of a pump pressure rod provided in an embodiment of the present application;

[0026] Figure 10 : A cross-sectional view of a fixed bushing provided in an embodiment of the present application;

[0027] Figure 11 : A cross-sectional view of a cosmetic container provided in an embodiment of the present application;

[0028] Among them, the reference numerals in the figure correspond to:

[0029] 1-plastic elastic member, 11-elastic member body, 111-first abutting portion, 112-second abutting portion, 113-first end of the elastic member body, 114-second end of the elastic member body, 12-first stopping structure, 13-second stopping structure;

[0030] 2-pump body assembly, 21-pump pressure rod, 211-first limiting part, 212-connecting end of pump pressure rod, 22-fixed bushing, 221-second limiting part, 222-first sleeve ring, 223-second sleeve ring, 224-sleeving groove, 23-pump body assembly, 231-pump connecting rod, 232-piston, 233-mating end of pump body assembly, 234-piston seat, 235-pump body, 2351-abutment ring, 236-pump cavity; 3-container body, 4-connecting piece, 5-pressing piece, 6-protective cover. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0032] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0033] The following describes the embodiments with reference to the accompanying drawings, which do not limit the application content described in the claims.

[0034] Please refer to Figure 1-5 As shown, an embodiment of the present application provides a plastic elastic part, characterized in that it includes an elastic part body 11 and at least one first stop structure 12; the first stop structure 12 is arranged on the outer side wall of the elastic part body 11, and the first stop structure 12 is arranged along the length direction of the elastic part body 11. During the injection molding and demolding process of the plastic elastic part 1, the first stop structure 12 is used to limit the circumferential rotation of the elastic part body 11.

[0035] Specifically, the plastic elastic member 1 can be a plastic spring formed by injection molding. Compared with metal springs, plastic springs reduce the production cost of the product, are easy to recycle and reuse, and produce less noise when pressed, thereby improving user comfort.

[0036] During the injection molding process of the plastic elastic part 1, when the plastic particles are poured into the inner cavity of the injection mold, the threaded mold is then screwed into the inner cavity of the injection mold, and the plastic elastic part 1 is formed between the threaded mold and the inner wall of the injection mold. The distance between the threaded mold and the inner wall of the injection mold is the wall thickness of the plastic elastic part 1, and a limiting structure is provided on the inner wall of the injection mold, and then a first stopping structure 12 is formed on the outer wall of the plastic elastic part 1 that is engaged with the limiting structure; when the plastic elastic part 1 is demoulded, the threaded mold is rotated to rotate out, and the limiting structure abuts against the first stopping structure 12 on the outer wall of the plastic elastic part 1.

[0037] Specifically, the limiting structure provided on the inner wall of the injection mold can be a protrusion, which is provided along the axial direction of the inner cavity of the injection mold.

[0038] Specifically, a plurality of limiting structures can be arranged at equal intervals on the inner wall of the injection mold, and then a plurality of first stopping structures 12 corresponding to the limiting structures are formed on the outer wall of the plastic elastic part 1, thereby improving the limiting strength between the first stopping structure 12 of the plastic elastic part 1 and the limiting structure of the inner wall of the mold, and preventing the plastic elastic part 1 from rotating when the threaded mold rotates.

[0039] In this way, the present application sets a first stop structure 12 on the outer wall of the elastic part body 11, so that during the demolding process, the first stop structure 12 of the plastic elastic part 1 can offset the limiting structure of the inner wall of the mold, thereby preventing the rotation of the threaded mold from driving the plastic elastic part 1 to rotate, reducing the risk of mold compression when the plastic elastic part 1 is demolded, ensuring that the threaded mold is smoothly rotated out, and improving the demolding success rate of the plastic elastic part 1.

[0040] In some embodiments, the first stopping structure 12 is recessed on the outer wall of the elastic body 11 .

[0041] Specifically, refer to Figure 1 As shown, the first stopping structure 12 can be a stopping groove, and the groove depth of the stopping groove is smaller than the wall thickness of the plastic elastic member 1 .

[0042] In an embodiment of the present application, a first stop structure 12 is recessed on the outer wall of the elastic member body 11. The first stop structure 12 is used to cooperate with the limiting protrusion on the inner wall of the injection mold, which can prevent the rotation of the threaded mold from driving the plastic elastic member 1 to rotate, thereby reducing the risk of compression molding when the plastic elastic member 1 is demolded.

[0043] In some other embodiments, the first stopping structure 12 may be a stopping protrusion, and the inner wall of the injection mold may be provided with a groove that matches the stopping protrusion.

[0044] In some embodiments, the first stopping structure 12 is linear, arc-shaped, or lightning-shaped. The shape of the first stopping structure 12 is not limited in the present application.

[0045] In some embodiments, a second stopping structure 13 is further included; the second stopping structure 13 is provided to protrude from the first end of the elastic member body 11 .

[0046] Specifically, the second stopping structure 13 may be a stopping rib protruding from the elastic member body 11 , and the stopping rib is used for relatively fixedly cooperating with a slider in the injection mold.

[0047] In an embodiment of the present application, during the process of rotating and demolding the threaded mold, the stop rib is relatively fixedly matched with the slider in the injection mold, which can further limit the circumferential rotation of the plastic elastic part 1, thereby reducing the risk of compression molding during demolding of the plastic elastic part 1 and improving the demolding success rate of the plastic elastic part 1.

[0048] Specifically, refer to Figure 1-4 As shown, the second stopping structure 13 is a screw thread structure, which is arranged along the circumference of the first end of the elastic member body 11 and extends radially along the elastic member body 11. The outer diameter of the screw thread is not greater than the outer diameter of the elastic member body 11.

[0049] Specifically, the outer wall of the screw structure is formed by connecting multiple uneven non-coplanar planes. The outer wall of the screw structure is used to abut against the inner wall of the slider. Then, during the process of rotating and demolding the threaded mold, the outer wall of the screw structure is limitedly abutted against the inner wall of the slider, which can limit the relative rotation of the threaded mold relative to the plastic elastic part 1.

[0050] In some embodiments, the elastic member body 11 is a bellows structure.

[0051] Specifically, the elasticity of the plastic elastic part 1 mainly comes from its bellows structure. The bellows structure is usually composed of foldable corrugated sheets connected along the folding and stretching direction. It has good bending performance and can be bent as needed, making it easy to install and use in a smaller space.

[0052] In some embodiments, the first end 113 of the elastic body 11 is provided with a first abutting portion 111 ; the second end 114 of the elastic body 11 is provided with a second abutting portion 112 , and the second stopping structure 13 is provided on the first abutting portion 111 .

[0053] Specifically, the first end 113 and the second end 114 of the elastic member body 11 are disposed opposite to each other at two ends of the elastic member body 11 .

[0054] Specifically, refer to Figure 3 As shown, the first abutting portion 111 is an abutting shoulder structure protruding relative to the outer wall of the elastic member body 11 , and the first abutting portion 111 is used for being connected with the pump pressure rod 21 in the pump body assembly 2 .

[0055] Specifically, the second abutting portion 112 is an abutting sleeve structure, which is used to cooperate with and connect with the fixed bushing 22 in the pump body assembly 2 .

[0056] In the embodiment of the present application, by respectively providing a first abutting portion 111 and a second abutting portion 112 at the first end 113 and the second end 114 of the elastic member body 11, the subsequent assembly and connection of the plastic elastic member 1 with other structures is facilitated, thereby improving the connection stability and reliability of the plastic elastic member 1.

[0057] refer to Figure 6-10As shown, the embodiment of the present application also discloses a pump body assembly 2, including a coaxially arranged pump rod 21, a fixed bushing 22, a pump body assembly 23 and the plastic elastic member 1 as described above; the connecting end 212 of the pump rod 21 is fixedly sleeved on the mating end 233 of the pump body assembly 23, and the fixed bushing 22 is sleeved between the pump body assembly 23 and the pump rod 21; the plastic elastic member 1 is sleeved on the pump rod 21 and the two ends of the plastic elastic member 1 are respectively abutted against the pump rod 21 and the fixed bushing 22.

[0058] Specifically, the pump body assembly 23 includes a pump connecting rod 231, a piston 232, a piston seat 234 and a pump body 235. One end of the pump connecting rod 231 is fixedly sleeved in the inner cavity of the pump pressure rod 21, and the other end of the pump connecting rod 231 is fixedly connected to the piston 232; the piston seat 234 can be used to abut and cooperate with the piston 232, and the piston seat 234 is fixedly sleeved on the inner wall of the pump body 235; the fixed bushing 22 is fixedly sleeved at the opening of the pump body 235; the plastic elastic part 1 is arranged between the pump pressure rod 21 and the fixed bushing 22.

[0059] Specifically, the plastic elastic member 1 is in the initial state, the first end of the plastic elastic member 1 abuts against the pump rod 21, and the second end of the plastic elastic member 1 abuts against the fixed bushing 22; at this time, the piston 232 and the piston seat 234 are tightly fitted; when the pump rod 21 moves downward along the axial direction of the fixed bushing 22, the plastic elastic member 1 is compressed by force, and the pump rod 21 can push the pump connecting rod 231 toward the piston seat 234, and the piston 232 is separated from the piston seat 234, and a feed gap is formed between the piston 232 and the piston seat 234. The liquid material in the cavity of the pump body 235 can pass through the feed gap and then enter the inner cavity of the pump rod 21; after the external force is removed, the plastic elastic member 1 returns to the initial state from the compressed state, and then can push the pump rod 21 to move upward, and the piston 232 and the piston seat 234 return to a tight state.

[0060] Specifically, an abutment ring 2351 is provided at one end of the opening of the pump body 235 , and the abutment ring 2351 is protruding along the outer wall of the pump body 235 .

[0061] Specifically, a first sleeve ring 222 and a second sleeve ring 223 are provided on the end of the fixed sleeve 22 facing the pump body 235, and a sleeve groove 224 is formed between the first sleeve ring 222 and the second sleeve ring 223, and the groove width of the sleeve groove 224 is adapted to the inner wall of the opening of the pump body 235; the sleeve groove 224 of the fixed sleeve 22 is fixedly sleeved at the opening of the pump body 235 and the first sleeve ring 222 of the fixed sleeve 22 is in abutment with the abutment ring 2351, and the second sleeve ring 223 is in abutment with the inner wall of the pump body 235.

[0062] Specifically, if Figure 8As shown, the outer wall of the piston seat 234 and the inner wall of the pump body 235 are interference fit, thereby ensuring the fixation of the relative position of the piston seat 234 and the pump body 235, while improving the tightness of the fit between the outer wall of the piston seat 234 and the inner wall of the pump body 235, thereby improving the air tightness of the pump cavity 236 of the pump body assembly 2.

[0063] In other embodiments, the inner wall of the pump body 235 is provided with a snap-fit ​​groove, and the outer wall of the piston seat 234 can be snap-fitted into the snap-fit ​​groove, thereby limiting the axial displacement of the piston seat 234 and ensuring the relative fixed connection between the piston seat 234 and the pump body 235.

[0064] In some embodiments, a first limiting portion 211 is provided on the pump rod 21; a second limiting portion 221 that cooperates with the first limiting portion 211 is provided on the fixed bushing 22; when the pump rod 21 is in use, the plastic elastic part 1 is compressed by force until the first limiting portion 211 and the second limiting portion 221 are in limiting contact; when the pump rod 21 is in the initial state, under the action of the elastic force of the plastic elastic part 1, the first limiting portion 211 and the second limiting portion 221 are separated.

[0065] The pump rod 21 is in use, that is, a pressing force is applied to the pump rod 21, so that the pump rod 21 moves to the first limiting portion 211 and abuts against the second limiting portion 221, and the plastic elastic member 1 contracts and deforms under the action of external force.

[0066] Specifically, the second limiting portion 221 is a limiting abutment surface, which is arranged on the open end surface of the fixed bushing 22. The first limiting portion 211 is an abutment convex ring, which is arranged on the outer periphery of the pump rod 21. In the process of pressing the pump rod 21 to move toward the side of the fixed bushing 22, the abutment convex ring abuts against the limiting abutment surface, thereby limiting the maximum moving stroke of the pump rod 21.

[0067] In the embodiment of the present application, when the pump rod 21 is pressed and moved to the maximum stroke, the first limit portion 211 and the second limit portion 221 are in limiting contact. The cooperation of the two not only limits the maximum displacement of the pump rod 21, but also limits the maximum gap of the feed gap, thereby ensuring that when the pump rod 21 moves to the maximum displacement, the amount of liquid material entering the cavity of the pump rod 21 through the feed gap is the same, thereby improving the user experience.

[0068] refer to Figure 11As shown, the embodiment of the present application also discloses a cosmetic container, including a container body 3, a connecting member 4, a pressing member 5, a protective cover 6 and the pump body assembly 2 as described above; the pump body assembly 2 is at least partially installed in the container body 3, the connecting member 4 is screwed to the container body 3 to fix the pump body assembly 2 on the container body 3, the pressing member 5 is connected to the pressing end of the pump rod 21, and the protective cover 6 can be detachably covered on the connecting member 4; under the drive of external force, the pressing member 5 can push the pump rod 21 to move axially along the fixed bushing 22.

[0069] Specifically, the pressing member 5 has a discharge channel, which is communicated with the inner cavity of the pump rod 21 ; the pressing member 5 is provided with a connector, which can be detachably mounted on the opening of the pump rod 21 .

[0070] Specifically, the container body 3 is a tubular bottle body, and an external thread is provided at the bottle mouth of the container body 3. The connecting piece 4 is provided with an internal connecting thread that cooperates with the external thread. The connecting piece 4 is threadedly connected to the container body 3 to fix the pump body assembly 2 on the container body 3.

[0071] Specifically, the connecting member 4 is also provided with a connecting baffle. When the connecting member 4 is threadedly connected to the bottle mouth of the device bottle, the connecting baffle can abut and cooperate with the upper surface of the abutment ring 2351, further improving and ensuring the reliability of the cooperation between the pump body assembly 2 and the container body 3.

[0072] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0073] It should be noted that all the features recorded in this application (including technical features recorded in different embodiments) can be combined arbitrarily under reasonable circumstances, and the new technical solutions formed by the combination are all within the scope of protection of this application.

[0074] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A plastic elastic part, characterized in that: It comprises an elastic member body (11) and at least one first stopping structure (12); The first stop structure (12) is provided on the outer side wall of the elastic member body (11), and the first stop structure (12) is arranged along the length direction of the elastic member body (11); During the demoulding process of the plastic elastic member (1), the first stop structure (12) limits the circumferential rotation of the elastic member body (11).

2. The plastic elastic member according to claim 1, characterized in that: The first stopping structure (12) is recessed in the outer wall of the elastic member body (11).

3. The plastic elastic member according to claim 2, wherein: The first stopping structure (12) is linear, arc-shaped or lightning-shaped.

4. The plastic elastic member according to claim 1, wherein: Also comprising a second stop structure (13); The second stopping structure (13) is provided protruding from the first end (113) of the elastic member body (11).

5. The plastic elastic member according to claim 4, characterized in that: The second stop structure (13) is a screw thread structure, which is arranged along the circumference of the first end (113) of the elastic member body (11) and extends radially along the elastic member body (11). The outer diameter of the screw thread is not greater than the outer diameter of the elastic member body (11).

6. The plastic elastic member according to claim 4, characterized in that: The first end (113) of the elastic member body (11) is provided with a first abutting portion (111); the second end (114) of the elastic member body (11) is provided with a second abutting portion (112); The second stopping structure (13) is arranged on the first abutting portion (111).

7. The plastic elastic member according to claim 1, wherein: The elastic member body (11) is a bellows structure.

8. A pump assembly, characterized in that: It comprises a coaxially arranged pump rod (21), a fixed bushing (22), a pump body assembly (23) and the plastic elastic member (1) according to any one of claims 1 to 7; The connecting end (212) of the pump pressure rod (21) is fixedly sleeved on the matching end (233) of the pump body assembly (23), and the fixed bushing (22) is sleeved between the pump body assembly (23) and the pump pressure rod (21); The plastic elastic member (1) is sleeved on the pump rod (21), and two ends of the plastic elastic member (1) are respectively in contact with the pump rod (21) and the fixed bushing (22).

9. The pump assembly according to claim 8, characterized in that The pump rod (21) is provided with a first limiting portion (211); the fixed bushing (22) is provided with a second limiting portion (221); When the pump pressure rod (21) is in use and moves to the maximum stroke, the first limiting portion (211) and the second limiting portion (221) are in limiting contact with each other; The pump rod (21) is in an initial state, and under the elastic force of the plastic elastic member (1), the first limiting portion (211) and the second limiting portion (221) are separated.

10. A cosmetic container, characterized in that: It comprises a container body (3), a connecting piece (4), a pressing piece (5), a protective cover (6) and the pump body assembly (2) according to claim 9; The pump assembly (2) is at least partially installed in the container body (3), the connecting member (4) is screwed to the container body (3) to fix the pump assembly (2) to the container body (3), the pressing member (5) is connected to the pressing end of the pump pressure rod (21), and the protective cover (6) is detachably covered on the connecting member (4); The pressing member (5) pushes the pump pressure rod (21) to move along the axial direction of the fixed bushing (22).

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