Labor-saving cover structure for hand cream

Abstract

The utility model relates to the technical field of cosmetic product packaging covers, and discloses a labor-saving cover structure for hand cream. According to the labor-saving hand cream cover structure, the rotating and unfolding direction of the first rotating arm relative to the cover body is opposite to the tightening direction of the cover body, and only when the rotating and unfolding angle of the first rotating arm relative to the cover body is maximum, the limiting surface abuts against the limiting part; the situation that the first rotating arm slides or rotates relative to the cover body to pinch the hands of a user or cause inconvenience in use is avoided, the arm length of the first rotating arm is utilized to increase the overall stress arm of the cover body in the rotating and unscrewing process so as to achieve labor-saving unscrewing, and due to the fact that the first rotating arm is provided with an arc-shaped face, the cover body can be unscrewed conveniently. When the hand cream cover does not need to be unscrewed or screwed, the occupied space and the size of the hand cream cover are reduced when the first rotating arm and the cover body are in a closed state, the arc-shaped surface is beneficial for increasing the contact area between the fingers of a user and the first rotating arm, the pressure can be reduced, and labor is further saved; and the hand cream cover is higher in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of cosmetic product packaging covers, in particular to a labor-saving cover structure for hand cream. Background Art

[0002] As people's quality of life improves, they pay more and more attention to their personal appearance, and the beauty and facial care industry has also developed rapidly. Hand cream is a skin care product that can heal and smooth skin cracks and dryness, and can effectively prevent and treat rough and cracked hands in autumn and winter. Frequent use in autumn and winter can make the skin of the hands more delicate and moisturized. It is a household name and a must-have beauty and facial care product. Hand cream usually needs to be packaged in soft packaging bags or bottles or hard packaging bottles during the manufacturing, sales or use process.

[0003] However, the cover structure of the traditional hand cream packaging bottle is simple. Especially when the user has moisture on his hands after washing, it is easy to slip and not labor-saving to twist and loosen the bottle cap. Therefore, a labor-saving cover structure of hand cream is proposed to solve the above technical problems. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the shortcomings of the prior art, the utility model provides a labor-saving lid structure for hand cream, which has the advantages of simple, convenient, labor-saving and anti-slip. It solves the problem that the cover structure of traditional hand cream packaging bottles is single, especially when the user has moisture on his hands after washing, the bottle cap is easy to slip and not labor-saving when twisting and loosening it.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a labor-saving lid structure for hand cream, comprising a lid body, which is connected to the bottle body by a threaded connection, and the tightening direction of the lid body is clockwise or counterclockwise, a first rotating arm is hinged on the lid body, a limited position surface is arranged on the first rotating arm, a limiting portion selectively abutting against the limiting surface is arranged on the lid body, the direction in which the first rotating arm rotates and expands relative to the lid body is opposite to the tightening direction of the lid body, the limiting surface abuts against the limiting portion when and only when the first rotating arm rotates and expands at a maximum angle relative to the lid body, an arcuate surface is arranged on the first rotating arm, and the arcuate surface fits against the lid body when and only when the first rotating arm is in a closed state rotated relative to the lid body.

[0008] Preferably, a second rotating arm is hinged on the cover body, and the second rotating arm is distributed in a mirror-symmetrical or rotationally symmetrical manner with the first rotating arm relative to a plane where a central axis of rotation of the cover body is located.

[0009] Preferably, the cover body is provided with a groove matched with the first rotating arm and the second rotating arm.

[0010] Preferably, a locking device is provided on the cover body, and the locking device is used to selectively lock the cover body and the first rotating arm and / or the second rotating arm.

[0011] Preferably, the locking device includes a spherical protrusion and a spherical groove, the first rotating arm and the second rotating arm are both provided with a spherical protrusion, and the cover body is provided with a spherical groove that selectively abuts against the spherical protrusion, and the spherical protrusion is engaged with the spherical groove when and only when the first rotating arm is rotated relative to the cover body to a closed state, and the first rotating arm and the cover body are locked and limited.

[0012] Preferably, the locking device includes a limit groove and an elastic rope. The limit groove is provided on the first rotating arm and the second rotating arm. An elastic rope is provided on the cover body and between the first rotating arm and the second rotating arm. The elastic rope is used to selectively sleeve on the outer wall of the cover body and cooperate with the limit groove to lock and limit the cover body and the first rotating arm and the second rotating arm.

[0013] Preferably, the elastic rope is in an "8"-shaped structure.

[0014] Preferably, the locking device includes an annular groove, a stop ring and a stop portion. An annular groove is provided on the cover body, a stop ring is arranged in the annular groove, and two stop portions are symmetrically arranged on the stop ring. The first rotating arm and the second rotating arm can rotate relative to the cover body only when and only when the stop ring with the two stop portions rotates to the symmetry plane of the first rotating arm and the second rotating arm.

[0015] Preferably, the cover body includes a bottom cover, a flexible connecting portion and a cap cover, the bottom cover is connected to the bottle body by a thread, a through hole is arranged at the center of the bottom cover, the first rotating arm is hinged on the bottom cover, the flexible connecting portion is arranged on a side of the bottom cover away from the bottle body, the cap cover is arranged on the flexible connecting portion, and the cap cover can selectively close relative to the bottom cover and block the through hole.

[0016] Preferably, a third rotating arm is provided on the cap.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the utility model provides a labor-saving cover structure for hand cream, which has the following beneficial effects:

[0019] 1. The labor-saving cover structure of the hand cream is characterized in that the direction in which the first rotating arm rotates and unfolds relative to the cover body is opposite to the tightening direction of the cover body, that is, ① when the tightening direction of the cover body is clockwise, the direction in which the first rotating arm rotates and unfolds relative to the cover body is counterclockwise, and ② when the tightening direction of the cover body is counterclockwise, the direction in which the first rotating arm rotates and unfolds relative to the cover body is clockwise, and because the limiting surface conflicts with the limiting portion when and only when the first rotating arm rotates and unfolds relative to the cover body at a maximum angle, the technical solution enables the first rotating arm to maintain synchronous rotation relative to the cover body under the restraining and limiting action of the hinge point, the limiting surface and the limiting portion during the process of unfolding the first rotating arm and the cover body and loosening it relative to the bottle body, thereby effectively preventing the first rotating arm from sliding or rotating relative to the cover body to pinch the user's hand or cause inconvenience in use. The first rotating arm has an arc-shaped surface, and the arc-shaped surface fits the cover body when and only when the first rotating arm is in a closed state with respect to the cover body, the arc-shaped surface reduces the occupied space and volume of the hand cream cover when the first rotating arm and the cover body are in a closed state when the hand cream cover does not need to be loosened or tightened. The arc-shaped appearance design is more beautiful and elegant in the unfolded state, and the arc-shaped surface is conducive to increasing the contact area between the user's fingers and the first rotating arm, avoiding the situation that the contact area of ​​the force point of the first rotating arm is too small, which is easy to cause deformation or breakage. At the same time, increasing the force area can reduce the pressure to further save effort and make the hand cream cover more practical.

[0020] 2. The hand cream labor-saving lid structure is characterized by a second rotating arm hingedly provided on the lid body, and the second rotating arm is mirror-symmetrically distributed or rotationally symmetrically distributed with the first rotating arm relative to the plane where the central axis of rotation of the lid body is located, S1 when the second rotating arm is mirror-symmetrically distributed with the first rotating arm relative to the plane where the central axis of rotation of the lid body is located, as shown in the figure, that is: S11 the user can selectively use the first rotating arm alone to cooperate with the lid body to increase the force arm to achieve the technical effect of labor-saving loosening the hand cream lid body and the bottle body; S12 the user can selectively use the second rotating arm alone to cooperate with the lid body to increase the force arm to achieve the technical effect of labor-saving tightening the hand cream lid body 1 and the bottle body; S13 the first rotating arm and the second rotating arm can also be simultaneously unfolded and the first rotating arm and the second rotating arm can be pinched to increase the force arm to achieve the technical effect of labor-saving loosening or tightening the hand cream lid body and the bottle body The technical effect is achieved by combining the above-mentioned multiple methods, so that the user can choose a variety of methods according to different needs to tighten or loosen the cover and the bottle body in a labor-saving manner when using the hand cream labor-saving cover structure; S2 When the second rotating arm is rotationally symmetrical with the first rotating arm relative to the central axis of the cover body, as shown in the figure, the second rotating arm and the first rotating arm have the same expansion distance relative to the central axis of the cover body, thereby making the force distribution of the second rotating arm and the first rotating arm on the cover body more uniform, thereby avoiding the uneven force during the rotation of the cover body, resulting in excessive deviation in the thread engagement angle with the bottle body, resulting in poor labor-saving effect and affecting the user's experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of the first embodiment of the present utility model;

[0022] Figure 2 This is a structural explosion diagram of the second embodiment of the utility model;

[0023] Figure 3 This is a structural schematic diagram of the second embodiment of the present utility model;

[0024] Figure 4 Another structural explosion diagram of the second embodiment of the utility model;

[0025] Figure 5 This is another structural schematic diagram of the second embodiment of the utility model;

[0026] Figure 6 This is a structural schematic diagram of Embodiment 5 of the present utility model;

[0027] Figure 7 This is a structural schematic diagram of Embodiment 6 of the present utility model;

[0028] Figure 8 This is a structural diagram of Embodiment 7 of the present utility model. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] For example, see Figure 1-8A labor-saving cap structure for hand cream comprises a cap body 1, which is connected to a bottle body by a thread, and the tightening direction of the cap body 1 is clockwise or counterclockwise, a first rotating arm 2 is hinged on the cap body 1, a limited position surface 21 is arranged on the first rotating arm 2, and a limiting portion 11 selectively abutting against the limiting position surface 21 is arranged on the cap body 1, the direction in which the first rotating arm 2 rotates and unfolds relative to the cap body 1 is opposite to the tightening direction of the cap body 1, the limiting position surface 21 abuts against the limiting portion 11 when and only when the first rotating arm 2 rotates and unfolds relative to the cap body 1 at the maximum angle, the first rotating arm 2 is arranged with an arc surface 22, and when and only when the first rotating arm 2 rotates and unfolds relative to the cap body 1 at the maximum angle, the limiting position surface 21 abuts against the limiting portion 11, and the first rotating arm 2 is arranged with an arc surface 22. When the first rotating arm 2 is rotated relative to the cover body 1 to a closed state, the arc surface 22 fits with the cover body 1; the direction in which the first rotating arm 2 rotates and expands relative to the cover body 1 is opposite to the tightening direction of the cover body 1, that is, ① when the tightening direction of the cover body 1 is clockwise, the direction in which the first rotating arm 2 rotates and expands relative to the cover body 1 is counterclockwise, ② when the tightening direction of the cover body 1 is counterclockwise, the direction in which the first rotating arm 2 rotates and expands relative to the cover body 1 is clockwise, and because the limiting surface 21 conflicts with the limiting portion 11 when and only when the first rotating arm 2 rotates and expands relative to the cover body 1 at the maximum angle, the technology According to the technical solution, during the process of unfolding the first rotating arm 2 and the cover body 1 and unscrewing them relative to the bottle body, the first rotating arm 2 keeps rotating synchronously relative to the cover body 1 under the restraining and limiting action of the hinge point, the limiting surface 21 and the limiting portion 11, effectively preventing the first rotating arm 2 from sliding or rotating relative to the cover body 1 and pinching the user's hand or causing inconvenience in use, and at the same time, the arm length of the first rotating arm 2 is used to increase the overall force arm of the cover body 1 during the rotation and unscrewing process, so as to achieve the technical effect of labor-saving unscrewing the hand cream cover body 1 and the bottle body, and because the first rotating arm 2 has an arc surface 22, when and only when the first rotating arm 2 When the arm 2 is rotated relative to the cover body 1 and is in a closed state, the arc surface 22 fits against the cover body 1, so that the space and volume occupied by the hand cream cover are reduced when the first rotating arm 2 and the cover body 1 are in a closed state when the hand cream cover does not need to be loosened or tightened. The arc-shaped appearance design is more beautiful and elegant when in the unfolded state, and the arc surface is conducive to increasing the contact area between the user's fingers and the first rotating arm 2, avoiding the situation where the contact area of ​​the force point of the first rotating arm 2 is too small, which is easy to cause deformation or breakage. At the same time, increasing the force area can reduce the pressure to further save effort and make the hand cream cover more practical.

[0031] In the second embodiment, since the direction in which the first rotating arm 2 in the first embodiment rotates and closes relative to the cover body 1 is the same as the direction in which the cover body 1 is tightened, that is, in the process of tightening the cover body 1 and the bottle body, the first rotating arm 2 has only a hinge point relative to the force fulcrum of the cover body 1, which can easily cause the user's fingers to be pinched. Therefore, in the second embodiment, based on the technology of the first embodiment, a second rotating arm 3 is hingedly provided on the cover body 1, and the second rotating arm 3 is distributed in a mirror-symmetrical or rotationally symmetrical manner with the first rotating arm 2 relative to the plane where the rotation center axis of the cover body 1 is located. When the second rotating arm 3 is distributed in a mirror-symmetrical manner with the first rotating arm 2 relative to the plane where the rotation center axis of the cover body 1 is located, as shown in S1, Figure 4-5 As shown, that is: S11 the user can selectively use the first rotating arm 2 alone to cooperate with the cover body 1 to increase the force arm to achieve the technical effect of labor-saving loosening the hand cream cover body 1 and the bottle body; S12 the user can selectively use the second rotating arm 3 alone to cooperate with the cover body 1 to increase the force arm to achieve the technical effect of labor-saving tightening the hand cream cover body 1 and the bottle body; S13 the first rotating arm 2 and the second rotating arm 3 can also be simultaneously unfolded and the first rotating arm 2 and the second rotating arm 3 can be pinched to increase the force arm to achieve the technical effect of labor-saving loosening or tightening the hand cream cover body 1 and the bottle body, and ensure that the first rotating arm 2 and / or the second rotating arm 3 slide or rotate relative to the cover body 1 to prevent the user's hand from being pinched or caused inconvenience in use. Therefore, the technical solution uses the above-mentioned multiple methods in combination, so that the user can choose a variety of methods according to different needs when using the hand cream labor-saving cover structure to achieve the technical effect of labor-saving tightening or loosening the cover body 1 and the bottle body; S2 when the second rotating arm 3 is rotationally symmetrically distributed with respect to the rotation center axis of the cover body 1 and the first rotating arm 2, such as Figure 2-3 As shown, the second rotating arm 3 and the first rotating arm 2 are arranged at the same distance relative to the central axis of the cover body 1, so that the force exerted by the second rotating arm 3 and the first rotating arm 2 on the cover body 1 is more evenly distributed, thereby avoiding uneven force during the rotation of the cover body 1, causing excessive deviation in the thread engagement angle with the bottle body, resulting in poor labor-saving effect and affecting the user experience.

[0032] Embodiment 3, based on embodiment 2, Figure 2-3As shown, the technical solution further provides a groove 12 on the cover body 1 that is compatible with the first rotating arm 2 and the second rotating arm 3, so that the hand cream cover can further reduce the occupied space and volume of the hand cream cover when the first rotating arm 2 and the second rotating arm 3 are in a closed state with the cover body 1 when the hand cream cover does not need to be loosened or tightened. The arc-shaped appearance design is more beautiful and generous in the unfolded state, and the arc-shaped surface is conducive to increasing the contact area between the user's fingers and the first rotating arm 2 and the second rotating arm 3, avoiding the situation that the contact area of ​​the force points of the first rotating arm 2 and the second rotating arm 3 is too small, which is easy to cause deformation or breakage. At the same time, increasing the force area can reduce the pressure and further save effort, and make the hand cream cover more practical. In addition, the edge of the groove 12 on the cover body 1 is used to form a smooth transition surface for the outer wall of the first rotating arm 2 and the second rotating arm 3, which effectively avoids the hand cream cover from being hooked with other objects when placed or used, that is, further improving the practicality of the hand cream cover and the user experience.

[0033] Embodiment 4, based on embodiment 3, the present technical solution further provides a locking device 4 on the cover body 1, and the locking device 4 is used to selectively lock the cover body 1 with the first rotating arm 2 and / or the second rotating arm 3, such as Figure 6-8 As shown; the cover body 1 and the first rotating arm 2 and / or the second rotating arm 3 are selectively locked by the locking device 4, so as to further prevent the first rotating arm 2 and / or the second rotating arm 3 from being easily hooked with other objects due to external force when the hand cream cover is placed or used. As shown in the following embodiments five to seven, three locking devices 4 with different functions and different methods are introduced, so as to further improve the practicality of the hand cream cover and the user experience.

[0034] Embodiment 5, as Figure 6 As shown, the locking device 4 of the present technical solution includes a spherical protrusion 411 and a spherical groove 412. The first rotating arm 2 and the second rotating arm 3 are both provided with a spherical protrusion 411, and the cover body 1 is provided with a spherical groove 412 that selectively resists the spherical protrusion 411. When and only when the first rotating arm 2 is in a rotationally closed state relative to the cover body 1, the spherical protrusion 411 is engaged with the spherical groove 412 and the first rotating arm 2 and the cover body 1 are locked and limited. Through the arc surface of the spherical protrusion 411, when the first rotating arm 2 or the second rotating arm 3 is rotated and closed with the cover body 1 to be locked or rotated to be unfolded, the force-bearing area of ​​the first rotating arm 2 and the second rotating arm 3 and the cover body 1 is always in point contact. The point contact effectively reduces the contact area and increases the pressure, and makes the first rotating arm 2 and the second rotating arm 3 and the cover body 1 more likely to undergo elastic deformation during the locking or unfolding process for corresponding locking or unfolding, so as to improve the practicality of the hand cream cover and the user experience.

[0035] Embodiment six, as Figure 7As shown, the locking device 4 of the present technical solution includes a limit groove 421 and an elastic rope 422. The limit groove 421 is provided on the first rotating arm 2 and the second rotating arm 3. An elastic rope 422 is provided on the cover body 1 and between the first rotating arm 2 and the second rotating arm 3. The elastic rope 422 is used to selectively sleeve on the outer wall of the cover body 1 and cooperate with the limit groove 421 to lock and limit the cover body 1 and the first rotating arm 2 and the second rotating arm 3. Through the elastic tension of the elastic rope 422 and the limit groove 421 on the first rotating arm 2 and the second rotating arm 3, the first rotating arm 2 and the second rotating arm 3 can be quickly locked or unfolded with the cover body 1 to improve the practicality of the hand cream cover and the user experience, and the elastic rope 422 detached from the first rotating arm 2 and the second rotating arm 3 can be used for the lifting ring or hanging ring of the hand cream cover, thereby improving the practicality of the hand cream cover and the user experience.

[0036] Furthermore, on the basis of Example 6, the technical solution configures the elastic rope 422 into an "8"-shaped structure, and utilizes one annular structure in the elastic rope 422 of the "8"-shaped structure to quickly lock or unfold the first rotating arm 2 and the second rotating arm 3 with the cover body 1, while the other annular structure can be used for the lifting ring or hanging ring of the hand cream cover, and when the elastic rope 422 needs to be detached from the first rotating arm 2 and the second rotating arm 3, the other annular structure can be used to pull the annular structure that elastically binds the first rotating arm 2 and the second rotating arm 3 with the cover body 1, effectively avoiding the situation in which the elastic rope 422 of a single annular structure has too small a coupling gap with the limiting groove 421 during use, resulting in difficulty in falling off and inconvenience in use, thereby affecting the practicality of the hand cream cover and the user experience.

[0037] Embodiment seven, as Figure 8As shown, the locking device 4 of the technical solution includes an annular groove 431, a stop ring 432 and a stop portion 433. The cover body 1 is provided with an annular groove 431, and a stop ring 432 is arranged in the annular groove 431. The stop ring 432 and the annular groove 431 are interference fit, that is, the interference fit is used to increase the resistance to prevent the stop ring 432 from automatically rotating relative to the annular groove 431 due to gravity or inertia, so that the stop portion 433 on the stop ring 432 cannot effectively lock the first rotating arm 2 and the second rotating arm 3 with the cover body 1. Two stoppers 433 are symmetrically arranged on 432. When and only when the stopper ring 432 with the two stoppers 433 rotates to the symmetric plane of the first rotating arm 2 and the second rotating arm 3, the first rotating arm 2 and the second rotating arm 3 can rotate relative to the cover body 1. By rotating the stopper ring 432, the two stoppers 433 on the stopper ring 432 rotate to the symmetric plane of the first rotating arm 2 and the second rotating arm 3, that is, the stoppers 433 are separated from the first rotating arm 2 and the second rotating arm 3, thereby facilitating the rotation of the first rotating arm 2 and the second rotating arm The first rotating arm 2 and the second rotating arm 3 are respectively limited by the two stoppers 433 on the stopper ring 432, so that the cover 1 and the first rotating arm 2 and the second rotating arm 3 are locked in a simple, convenient and fast manner, and the cover 1 and the first rotating arm 2 and the second rotating arm 3 are locked in a simple, convenient and fast manner, so as to further prevent the hand cream cover from being locked when placed or used. When in use, the first rotating arm 2 and / or the second rotating arm 3 are easily hooked with other objects due to the action of external force, thereby further improving the practicality of the hand cream cover and the user experience. It is particularly noted that when the first rotating arm 2 and / or the second rotating arm 3 in the present technical solution are rotationally symmetrically distributed, when locking the cover body 1 and the first rotating arm 2 and the second rotating arm 3, it is only necessary to rotate the stop ring 432, and the two stop parts 433 on the stop ring 432 will automatically drive the first rotating arm 2 and / or the second rotating arm 3 to lock the cover body 1.

[0038] Embodiment eight, as Figure 1-8As shown, on the basis of the above embodiments, the cover body 1 of the present technical solution includes a bottom cover 101, a flexible connection part 102 and a cap cover 103, the bottom cover 101 is connected to the bottle body by a thread, a through-type through hole a is arranged at the central part of the bottom cover 101, the first rotating arm 2 is hinged on the bottom cover 101, the flexible connection part 102 is arranged on the side of the bottom cover 101 away from the bottle body, and a cap cover 103 is arranged on the flexible connection part 102, and the cap cover 103 can selectively close and block the through hole a relative to the bottom cover 101; by flipping the cap cover 103 and connecting the cap cover 103 to the bottom cover 101 through the flexible connection part 102, the hand cream labor-saving cover can be opened by labor-saving rotation or by flipping, that is, the use method of the hand cream labor-saving cover is further increased, so that the user can choose a variety of methods according to different needs to labor-saving tighten or loosen the cover body 1 and the bottle body when using the hand cream labor-saving cover structure.

[0039] Furthermore, the cap 103 is provided with a third rotating arm 5 , that is, the third rotating arm 5 and the cap 103 are unfolded by rotation, so that the user can save effort when flipping and opening the cap 103 .

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A labor-saving cap structure for hand cream, comprising a cap body (1), wherein the cap body (1) is connected to the bottle body via a thread, and the tightening direction of the cap body (1) is clockwise or counterclockwise, and characterized in that: A first rotating arm (2) is hingedly connected to the cover body (1), a limiting surface (21) is arranged on the first rotating arm (2), and a limiting portion (11) selectively abutting against the limiting surface (21) is arranged on the cover body (1); the direction in which the first rotating arm (2) rotates and unfolds relative to the cover body (1) is opposite to the direction in which the cover body (1) is tightened; the limiting surface (21) abuts against the limiting portion (11) when and only when the first rotating arm (2) rotates and unfolds relative to the cover body (1) to a maximum angle; an arcuate surface (22) is arranged on the first rotating arm (2); and the arcuate surface (22) abuts against the cover body (1) when and only when the first rotating arm (2) rotates and closes relative to the cover body (1).

2. The labor-saving cover structure of hand cream according to claim 1, characterized in that: A second rotating arm (3) is hingedly connected to the cover body (1); the second rotating arm (3) is distributed in a mirror-symmetrical or rotationally symmetrical manner with the first rotating arm (2) relative to the plane where the rotation center axis of the cover body (1) is located.

3. The labor-saving cover structure of hand cream according to claim 2, characterized in that: The cover body (1) is provided with a groove (12) adapted to the first rotating arm (2) and the second rotating arm (3).

4. The labor-saving cover structure for hand cream according to claim 3, characterized in that: A locking device (4) is provided on the cover body (1), and the locking device (4) is used to selectively lock the cover body (1) and the first rotating arm (2) and / or the second rotating arm (3).

5. The labor-saving cover structure for hand cream according to claim 4, characterized in that: The locking device (4) comprises a spherical protrusion (411) and a spherical groove (412); the first rotating arm (2) and the second rotating arm (3) are both provided with the spherical protrusion (411); the cover body (1) is provided with a spherical groove (412) that selectively abuts against the spherical protrusion (411); when and only when the first rotating arm (2) is rotated relative to the cover body (1) to a closed state, the spherical protrusion (411) and the spherical groove (412) are engaged and the first rotating arm (2) and the cover body (1) are locked and limited.

6. The labor-saving cover structure for hand cream according to claim 4, characterized in that: The locking device (4) comprises a limiting groove (421) and an elastic rope (422); the limiting groove (421) is provided on the first rotating arm (2) and the second rotating arm (3); an elastic rope (422) is provided on the cover body (1) and between the first rotating arm (2) and the second rotating arm (3); the elastic rope (422) is used to selectively sleeve on the outer wall of the cover body (1) and cooperate with the limiting groove (421) to lock and limit the cover body (1) and the first rotating arm (2) and the second rotating arm (3).

7. The labor-saving cover structure for hand cream according to claim 6, characterized in that: The elastic rope (422) is an "8"-shaped structure.

8. The labor-saving cover structure for hand cream according to claim 4, characterized in that: The locking device (4) comprises an annular groove (431), a stop ring (432) and a stop portion (433); the cover body (1) is provided with an annular groove (431), a stop ring (432) is arranged in the annular groove (431), and two stop portions (433) are symmetrically arranged on the stop ring (432); when and only when the stop ring (432) with the two stop portions (433) rotates to the symmetric plane of the first rotating arm (2) and the second rotating arm (3), the first rotating arm (2) and the second rotating arm (3) can rotate relative to the cover body (1).

9. A labor-saving cover structure for hand cream according to any one of claims 1 to 8, characterized in that: The cover body (1) comprises a bottom cover (101), a flexible connection part (102) and a cap (103); the bottom cover (101) is connected to the bottle body via a thread; a through hole (a) is provided at the center of the bottom cover (101); a first rotating arm (2) is hinged to the bottom cover (101); the flexible connection part (102) is provided on a side of the bottom cover (101) away from the bottle body; a cap (103) is provided on the flexible connection part (102); and the cap (103) can selectively close relative to the bottom cover (101) and block the through hole (a).

10. The labor-saving cover structure for hand cream according to claim 9, characterized in that: A third rotating arm (5) is provided on the cap (103).

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