Portable folding key

Abstract

The utility model relates to the technical field of keys, in particular to a portable folding key which comprises an upper shell, a lower shell and a key piece rotationally installed between the upper shell and the lower shell, a limiting mechanism is arranged on the lower shell, and the limiting mechanism is used for limiting the positions of the key piece in the closing and opening states. And the limiting mechanism is hidden between the lower shell and the key piece when the key piece is opened and closed. The folding key is used for solving the technical problems that in the prior art, a folding key is poor in structural sealing performance, inconvenient to use and poor in attractiveness.

Description

Technical Field

[0001] The utility model relates to the technical field of keys, in particular to a portable folding key. Background Art

[0002] With the improvement of intelligence in all walks of life, fingerprint, voice or other intelligent unlocking methods are increasingly favored by consumers due to their portability. However, in order to prevent the failure of intelligent unlocking due to failure of intelligence, equipping with spare keys is a common solution. However, since spare keys are rarely used, in order to minimize wear and tear when not in use, they are generally stored in a folded manner. There are various forms of folding keys in the prior art, but most of them are not easy to carry, have poor storage appearance and poor stability during operation. The utility model patent with publication number CN21619725U discloses a folding key, including an upper cover and a lower cover, a compression spring, a key embryo and a button are arranged between the upper cover and the lower cover, and a circular protrusion is arranged on the lower cover, one end of the key embryo is sleeved on the circular protrusion, and a torsion spring is arranged between the circular protrusion and the key embryo, and the two ends of the torsion spring are respectively connected to the outer wall of the circular protrusion and the key embryo, and the upper cover and the lower cover are both provided with an active dry groove capable of accommodating the button and the compression spring, and the two ends of the compression spring are respectively connected to the button and the inner wall of the active groove, and one end of the key embryo is provided with a slot capable of accommodating the button, which saves the mechanism space and enhances the shell strength to a certain extent, but there are still many problems, such as ① the structure is relatively poor in airtightness, and impurities are easily introduced to affect the smoothness of use; ② excessive rotation is prone to occur during rotation, resulting in inaccurate positioning, and repeated adjustment is required, affecting the portability of use; ③ in the folded state, the key embryo is embedded in the shell, and force cannot be applied or force is difficult to apply during use, affecting the comfort of use. Utility Model Content

[0003] The utility model aims to provide a portable folding key, which is used to solve the technical problems of poor structural sealing, inconvenient use and poor aesthetics of the folding key in the prior art.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A portable folding key comprises an upper shell, a lower shell and a key blade rotatably mounted between the upper shell and the lower shell, wherein a limiting mechanism is arranged on the lower shell, and the limiting mechanism is used to limit the position of the key blade in the closed and open states, and the limiting mechanism is hidden between the lower shell and the key blade in both the open and closed states of the key blade.

[0006] Furthermore, a mounting groove for installing a limiting mechanism is provided on the lower shell body, and the limiting mechanism includes an elastic part and a limiting part which are sequentially arranged in the mounting groove, one end of the elastic part abuts against the bottom of the mounting groove, and the limiting part abuts against the other end of the elastic part, and when the elastic part is not under pressure, the top end of the limiting part protrudes from the surface of the lower shell body, and the limiting part cooperates with a limiting hole provided on the key blade to limit the position of the key blade in the closed and open states, and there are two limiting holes, and the axes of the two limiting holes and the mounting groove are all located on the same circle with the key blade shaft as the center.

[0007] Furthermore, a limit force-applying portion is also provided on the key piece, which is used to limit the rotation angle of the key piece. At the same time, the limit force-applying portion protrudes from the upper shell and the lower shell to facilitate the user to apply force when opening the key piece. The limit force-applying portion is arranged at the proximal end of the key piece, and a stop block is arranged on the lower shell, which is used to block the limit force-applying portion when the key piece is at the opening limit and contacts with the limit force-applying portion. The shape of the limit force-applying portion is set to an isosceles trapezoid, and the edges and corners of the isosceles trapezoid are all set to rounded corners, and an arrow for indicating the direction of force is provided on the limit force-applying portion, and an anti-slip and wear-resistant layer is provided on the outer layer of the limit force-applying portion, and the anti-slip and wear-resistant layer adopts a rubber pad bonded to the limit force-applying portion.

[0008] Furthermore, the upper shell and the lower shell are connected by a fastening assembly, and the key blade is provided with an axial hole, which is used for the fastening assembly to pass through so that it can be rotatably installed between the upper shell and the lower shell, and a spring-pressing part is installed on the lower shell, which is used to generate pre-pressure on the key blade to keep it away from the lower shell.

[0009] Furthermore, the limiting portion is configured to be spherical or to have a hemispherical surface at one end and a shape that is adapted to abut against the elastic portion at the other end. The elastic portion is a spring, and the pressure portion is a compression spring.

[0010] Compared with the prior art, the technical solution of the utility model has the following beneficial effects:

[0011] (1) The utility model sets a limit mechanism to limit the position of the key blade in the closed and open states, which is convenient for storing the folding key when not in use and is conducive to improving the stability when in use. At the same time, by hiding the limit mechanism, it can not only prevent the limit mechanism from entering impurities during long-term use and affecting its smoothness of use, but also improve the aesthetics of the folding key;

[0012] (2) The utility model provides a specific structure of the limiting mechanism, uses the installation groove to provide installation space for the elastic part and the limiting part, and limits the positional relationship between the limiting part, the elastic part and the installation groove, which is conducive to limiting the position of the key blade in the closed and open states, and effectively avoids the limiting mechanism being exposed outside the key blade, which not only improves the aesthetics but also prevents impurities from entering and affecting normal use;

[0013] (3) The utility model provides a force application point for opening the key blade by setting a limit force application part, thereby improving the portability of the force application operation. At the same time, the rotation angle of the key blade can be limited by cooperating with the limit mechanism, thereby avoiding the inconvenience caused by the inability to quickly align the limit part with the limit hole by relying only on the elastic part and the limit part; in addition, the isosceles trapezoidal and rounded corner design, combined with the anti-slip and wear-resistant layer, is conducive to improving the comfort of the user in applying force;

[0014] (4) The utility model provides a spring-pressing portion, which is beneficial for the key blade to be quickly ejected after force is applied to the key blade when the key blade is opened, thereby improving the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the key blade of the utility model in a closed state;

[0016] Figure 2 This is a schematic diagram of the structure of the key blade of the utility model in the open state;

[0017] Figure 3 This is a schematic diagram of the explosion structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the top view of the lower shell structure of the utility model;

[0019] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure at AA in the middle;

[0020] Figure 6 It is a schematic diagram of the assembly structure of the lower housing and the key blade of the utility model;

[0021] Figure 7 This is a schematic diagram of the structure of the key blade of the utility model;

[0022] Figure 8 It is a schematic diagram of the lower housing and the key blade of the utility model in the open state;

[0023] Fig. 9 It is a schematic diagram of the closed state of the lower housing and the key blade of the utility model.

[0024] In the figure, 1 is the upper shell; 2 is the lower shell; 3 is the key blade; 4 is the screw; 5 is the nut; 6 is the limiting part; 7 is the elastic part; 8 is the pressing part; 9 is the limiting force part; 10 is the limiting hole; 11 is the stopper; 12 is the shaft hole. DETAILED DESCRIPTION

[0025] 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.

[0026] The drawings are for illustrative purposes only and should not be construed as limiting the present patent;

[0027] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms of "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0028] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0029] In the description of this application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] In addition, in the description of this application, unless otherwise specified, "plurality" means two or more than two. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. The following is a further explanation of the present invention in conjunction with the accompanying drawings and embodiments.

[0031] In order to solve the limitations of the prior art, this embodiment provides a technical solution, and the technical solution of the utility model is further described below in conjunction with the drawings and embodiments.

[0032] The technical solution of the utility model is to solve the common problems existing in conventional folding keys, such as some limit mechanisms set to realize the rotation of the key blade 3 are exposed outside, which is easy to cause impurities to enter and affect the use and is not beautiful; in addition, when the key blade 3 is rotated to open, it is easy to cause the limit mechanism to function normally due to excessive rotation speed, resulting in the phenomenon that the limit point is difficult to align. The folding key of the utility model is suitable for keys of automobiles, bicycles, door locks or other fields.

[0033] See attached Figure 1-3 A portable folding key comprises an upper shell 1, a lower shell 2 and a key blade 3 rotatably mounted between the upper shell 1 and the lower shell 2. The upper shell 1 and the lower shell 2 are connected by a fastening assembly. The key blade 3 is provided with an axial hole 12, and the axial hole 12 is used for the fastening assembly to penetrate so that it is rotatably mounted between the upper shell 1 and the lower shell 2. The fastening assembly comprises a screw 4 and a nut 5. During installation, the screw 4 passes through the upper shell 1, the key blade 3 and the lower shell 2 in sequence and is threadedly rotated and fastened by the nut 5. The upper shell 1 and the lower shell 2 have the same shape. The free end of the key blade 3 is embedded in the avoidance space between the upper shell 1 and the lower shell 2 in a closed state.

[0034] See attached Figure 3-5and 7, a limiting mechanism is provided on one side of the lower shell 2 close to the key blade 3, the limiting mechanism is used to limit the position of the key blade 3 in the closed and open states, and the limiting mechanism is hidden between the lower shell 2 and the key blade 3 when the key blade 3 is in the open and closed states. The meaning of hidden here can be understood as: no matter whether the key blade 3 is in the closed or open state, the limiting mechanism cannot be seen from the outside. Specifically, a mounting groove for installing the limiting mechanism is provided on the lower shell 2, and the mounting groove here can be a cylindrical blind hole or a blind hole of other shapes. The limiting mechanism includes an elastic part 7 and a limiting part 6 which are sequentially arranged in the mounting groove, one end of the elastic part 7 is against the bottom of the mounting groove, and the limiting part 6 is mounted against the other end of the elastic part 7. When the elastic part 7 is not under pressure, the top end of the limiting part 6 protrudes out of the lower shell 2 Surface, the meaning here can be understood as, under the action of the elastic force when the elastic part 7 is not under pressure, the limiting part 6 protrudes from the lower shell body 2, the limiting part 6 is set to a spherical shape or a shape with one end hemispherical and the other end adapted to abut against the elastic part 7, the elastic part 7 adopts a spring, and the limiting part 6 cooperates with the limiting hole 10 set on the key blade 3 to realize the limiting of the closed and open state positions of the key blade 3, the limiting hole 10 here can be set to a cylindrical blind hole or an arc hole on an arc surface, the diameter of the arc hole or the cylindrical blind hole here is smaller than the diameter of the limiting part 6, the limiting part 6 will be embedded in the limiting hole 10 under the action of the elastic part 7, thereby limiting the key blade 3 and the lower shell body 2, when the key blade 3 continues to be applied with force, the limiting part 6 will be separated from the limiting hole 10 and squeezed into the installation groove, at this time the key blade 3 can be rotated at will. Among them, there are two limiting holes 10, and the axes of the two limiting holes 10 and the mounting groove are located on the same circle with the rotation axis of the key blade 3 as the center. The design of being located on the same circle here can be understood as that when the key blade 3 rotates, the rotation path of the limiting part 6 is the arc between the two limiting holes 10, and the center of the arc is the center of the rotation axis of the key blade 3.

[0035] See attached Figure 1-36-9, a limit force-applying portion 9 is also provided on the key blade 3, and the limit force-applying portion 9 is used to limit the rotation angle of the key blade 3, and the rotation angle can be between 45-90 degrees. At the same time, the limit force-applying portion 9 protrudes from the upper shell 1 and the lower shell 2 to facilitate the user to apply force when the key blade 3 is opened. The limit force-applying portion 9 is provided at the proximal end of the key blade 3, where the proximal end is the side away from the free end, that is, the end close to the axial hole 12 of the key blade 3. A stopper 11 is provided on the lower shell 2, and the stopper 11 is used to contact the limit force-applying portion 9 when the key blade 3 is at the opening limit to achieve blocking the limit force-applying portion 9. Block, here when the limiting force-applying part 9 contacts and limits the block 11, the limiting part 6 just slides from one limiting hole 10 to another limiting hole 10, and the shape of the limiting force-applying part 9 is set to be an isosceles trapezoid, which can be understood as the connection between the limiting force-applying part 9 and the key blade 3 body being the bottom side of the isosceles trapezoid, and the edges and corners of the isosceles trapezoid are all set to be rounded, and the edges and corners here can be understood as the two obtuse angles of the isosceles trapezoid, and the limiting force-applying part 9 is provided with an arrow for indicating the direction of force application, and the outer layer of the limiting force-applying part 9 is provided with an anti-slip and wear-resistant layer, and the anti-slip and wear-resistant layer adopts a rubber pad bonded to the limiting force-applying part 9.

[0036] See attached Figure 3 and 8 9. A spring-pressing portion 8 is installed on the lower shell body 2, and is used for generating a pre-pressure on the key blade 3 to make it move away from the lower shell body 2. The spring-pressing portion 8 adopts a compression spring, and the compression spring is arranged to be horizontal at both ends and an arched sheet in the middle. Both ends of the compression spring can be detachably inserted into the groove of the lower shell body 2. When the key blade 3 is in the closed state, the arched part of the compression spring contacts the side of the key blade 3.

[0037] When the folding key of the utility model is used, under normal conditions, the key blade 3 is retracted between the upper shell 1 and the lower shell 2, and the limiting hole 10 on the key blade 3 cooperates with the limiting portion 6 in the mounting groove of the lower shell 2 to keep the key blade 3 in a closed state. When the folding key needs to be opened, force is applied to the limiting force-applying portion 9 of the key blade 3 in the direction of the arrow. At this time, combined with the compression spring, the limiting portion 6 disengages from the limiting hole 10 of the key blade 3 and contacts the key blade 3, and the key blade 3 can be rotated. When the limiting force-applying portion 9 rotates to contact the stopper 11 of the lower shell 2, the limiting portion 6 coincides with and is embedded in another limiting hole 10 of the key blade 3, thereby realizing the limiting locking of the key blade 3, so that the key blade 3 is in an open state.

[0038] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable folding key, comprising an upper shell (1), a lower shell (2), and a key blade (3) rotatably mounted between the upper shell (1) and the lower shell (2), characterized in that: A limiting mechanism is provided on the lower shell (2), the limiting mechanism being used to limit the position of the key blade (3) in the closed and open states, and the limiting mechanism is hidden between the lower shell (2) and the key blade (3) in both the open and closed states of the key blade (3).

2. A portable folding key according to claim 1, characterized in that: The lower shell (2) is provided with a mounting groove for mounting a limiting mechanism, the limiting mechanism comprising an elastic part (7) and a limiting part (6) sequentially arranged in the mounting groove, one end of the elastic part (7) abuts against the bottom of the mounting groove, the limiting part (6) abuts against the other end of the elastic part (7), when the elastic part (7) is not under pressure, the top end of the limiting part (6) protrudes from the surface of the lower shell (2), and the limiting part (6) cooperates with a limiting hole (10) arranged on the key blade (3) to limit the position of the key blade (3) in the closed and open states.

3. A portable folding key according to claim 2, characterized in that: There are two limiting holes (10), and the axes of the two limiting holes (10) and the mounting groove are located on the same circle with the key blade (3) rotation axis as the center.

4. A portable folding key according to claim 3, characterized in that: The key blade (3) is also provided with a limiting force-applying portion (9) for limiting the rotation angle of the key blade (3); the limiting force-applying portion (9) protrudes from the upper shell (1) and the lower shell (2) to facilitate the user to apply force when opening the key blade (3).

5. A portable folding key according to claim 4, characterized in that: The position limiting force applying part (9) is arranged at the proximal end of the key blade (3), and a stopper (11) is arranged on the lower shell (2), and the stopper (11) is used to block the position limiting force applying part (9) when the key blade (3) is at the opening limit and contacts the position limiting force applying part (9).

6. A portable folding key according to claim 5, characterized in that: The shape of the position-limiting force-applying portion (9) is set to be an isosceles trapezoid, the edges and corners of the isosceles trapezoid are all set to be rounded, and an arrow for indicating the force-applying direction is provided on the position-limiting force-applying portion (9).

7. A portable folding key according to any one of claims 2 to 6, characterized in that: The upper shell (1) and the lower shell (2) are connected via a fastening assembly, and the key blade (3) is provided with an axial hole (12), wherein the axial hole (12) is used for the fastening assembly to penetrate so that the fastening assembly can be rotatably installed between the upper shell (1) and the lower shell (2).

8. A portable folding key according to claim 7, characterized in that: The lower shell (2) is provided with a spring-pressing portion (8), which is used to generate a pre-pressure on the key blade (3) to keep it away from the lower shell (2).

9. A portable folding key according to claim 4, characterized in that: The outer layer of the position limiting force applying part (9) is provided with an anti-skid and wear-resistant layer, and the anti-skid and wear-resistant layer adopts a rubber pad bonded and connected to the position limiting force applying part (9).

10. The portable folding key according to claim 8, characterized in that: The limiting portion (6) is configured to be spherical or to have a semi-spherical surface at one end and a shape that is adapted to abut against the elastic portion (7). The elastic portion (7) is a spring, and the spring-pressing portion (8) is a compression spring.

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