Keychain for preventing key ring from coming loose

Abstract

The invention discloses a keychain for preventing a key ring from coming loose, comprising a keychain main body, wherein the keychain main body is connected to the key ring through a locking assembly, wherein the locking assembly comprises a locking piece and a locking shell that cooperate with each other, and a self-locking mechanism is also arranged inside the keychain main body, wherein the self-locking mechanism comprises a limit piece, an elastic piece and a positioning piece; the product abandons the traditional elastic metal ring structure, and adopts a semi-open metal ring with a "cap"-like feature, which cooperates with a corresponding buckle structure to prevent the buckle from falling off when the key ring is pulled by an external force, thereby increasing reliability; an "inwardly concave" protrusion structure is designed on the buckle part of the keychain to reduce as much as possible the risk of thread ends and fabrics getting stuck in normal use, and at the same time reduces the shaking feeling of the buckle caused by process factors, thereby improving the quality of the keychain.

Description

Technical Field

[0001] The invention relates to a key chain, in particular to a key chain capable of preventing a key ring from loosening. Background Art

[0002] A keychain is an item that people carry with them on a daily basis. It is usually a hook structure with a safety feature, so it is convenient to hang it on the waistband of pants or on the key strap in a bag. It is a very practical small item.

[0003] Due to technological factors, the buckle part of the keychains currently on the market often has a very obvious gap with the keychain body, which seriously affects the quality of the keychain. When pulled by external force, the buckle is easily loosened, causing the keychain to slip and be lost, bringing unnecessary trouble and trouble to life.

[0004] Furthermore, currently, key chains are known to use elastic metal rings to "circle" keys and other small items. However, when installing and removing keys and other small items, it is often necessary to use hard objects such as fingernails to first pry the elastic metal ring in a known manner before installing and removing it. Borrowing tools requires some skills, and it is often done by hand, which will hurt the fingernails, especially for people who are very concerned about the details of nail protection. In addition, due to the process characteristics of the elastic metal ring, its cross-sectional size is relatively small relative to the keyhole. Small items such as keys are often difficult to install or install, and the relative position is not smooth, resulting in a poor user experience. Summary of the invention

[0005] The invention provides a key chain which can prevent a key ring from being loosened, so as to overcome the defects in the prior art that the key ring is easily loosened under the action of external force, and small portable items such as keys and nail clippers are inconvenient to install.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] The invention discloses a key chain for preventing a key ring from loosening, comprising a key chain main body, wherein the key chain main body is connected to the key ring through a locking assembly; the locking assembly comprises a first locking piece and a locking shell that cooperate with each other; a self-locking mechanism is also arranged inside the key chain main body; the self-locking mechanism comprises a limiting piece, an elastic piece and a positioning piece.

[0008] Furthermore, the key ring is a semi-open ring structure, and two cap portions are provided at the open ring.

[0009] Furthermore, first grooves are formed on both side surfaces of the base of the fixing member, and second grooves are formed on both side surfaces of the locking shell.

[0010] Furthermore, the first step of the first locking member is clearance-matched with the two cap portions of the key ring.

[0011] Furthermore, a waist-shaped hole is provided at the lower end surface of the keychain body, and the diameter of one end of the waist-shaped hole is greater than the diameter of the other end.

[0012] Furthermore, the elastic member is placed in a groove provided on the limiting member, hanging ears are provided on both sides of the groove, and a positioning hole is provided on the outer surface of the keychain body, and the positioning member passes through the hanging ears and the positioning hole on the groove.

[0013] Furthermore, the circular hole of the hanging ear and the positioning hole are concentric circles.

[0014] Furthermore, the first locking member is divided into: a first step, a second step and a third step, and the sizes of the first step and the third step are both greater than the size of the second step.

[0015] Furthermore, the size of the second step is smaller than the size of the diameter of the small end of the waist-shaped hole, and the sizes of the first step and the third step are larger than the size of the diameter of the large end of the waist-shaped hole.

[0016] The beneficial effects achieved by the present invention are: the product abandons the traditional elastic metal ring structure, adopts a semi-open metal ring with a "cap"-shaped feature, and cooperates with the corresponding buckle structure to prevent the buckle from falling off under external force, thereby increasing reliability. The "concave" protrusion structure is designed on the buckle part of the key chain to minimize the line during normal use.

[0017] It reduces the risk of the key chain coming loose and lost due to the cloth getting stuck, and at the same time reduces the shaking of the buckle caused by process factors, thereby improving the quality of the key chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 is a schematic structural diagram of a first embodiment of the present invention;

[0020] Figure 2 is an exploded structural diagram of a first embodiment of the present invention;

[0021] Figure 3 The present invention Figure 1 The enlarged schematic diagram of point A in the middle;

[0022] Figure 4 It is a locking state diagram of the self-locking device of the present invention;

[0023] Figure 5 It is a diagram of the open state of the self-locking device of the present invention;

[0024] Figure 6is a side structural diagram of a first embodiment of the present invention;

[0025] Figure 7 It is a schematic structural diagram of the second embodiment of the present invention.

[0026] In the figure: 1. key chain body; 101. cavity; 2. key ring; 21. cap; 3. limiter; 31. ear; 4. elastic member; 5. positioning member; 6. first locking member; 61. first step; 62. second step; 63. third step; 64. base; 65. first groove; 7. locking shell; 71. second groove; 8. limiter hole; 9. slot; 10. second locking member; 1001. recessed portion. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0028] Embodiment 1: as Figure 1-6 As shown, a key chain for preventing a key ring from being loosened comprises a key chain body 1, wherein the key chain body 1 is connected to a key ring 2 via a locking assembly;

[0029] The locking assembly comprises a first locking member 6 and a locking shell 7 that cooperate with each other;

[0030] A self-locking mechanism is provided inside the keychain body 1;

[0031] The self-locking mechanism includes a limiter 3, an elastic member 4 and a positioning member 5;

[0032] The bottom of the keychain body 1 is provided with a waist-shaped hole and a cavity for accommodating a self-locking mechanism at the lower part, and the cavity is connected with the waist-shaped hole;

[0033] The elastic member 4 is placed in a groove provided on the limiting member 3 , and ears 31 are provided on both sides of the groove. A positioning hole is provided on the outer surface of the keychain body 1 , and the positioning member 5 passes through the ears 31 and the positioning hole on the groove.

[0034] The circular hole of the ear 31 is concentric with the positioning hole; a waist-shaped hole is provided at the lower end surface of the keychain body 1, and the diameter of one end of the waist-shaped hole is greater than the diameter of the other end; the key ring 2 is a semi-open ring structure, and two caps 21 are provided at the open ring;

[0035] The first locking piece 6 includes a first step 61, a second step 62, a third step 63 and a base 64 arranged from top to bottom, and both sides of the base 64 are provided with a first groove 65 for clamping the cap portion 21; and the sizes of the first step 61 and the third step 63 are both greater than the size of the second step 62; the size of the second step 62 is less than the size of the small end diameter of the waist-shaped hole, and at the same time, the sizes of the first step 61 and the third step 63 are greater than the size of the large end diameter of the waist-shaped hole.

[0036] The first step 61 is clearance-fitted with the two cap portions 21 of the key ring 2;

[0037] Second grooves 71 for clamping the cap portion 21 are formed on both sides of the locking shell 7 .

[0038] Specifically, when in use, the first locking piece 6 is placed between the two ends of the semi-open key ring 2, and the two cap portions 21 are inserted into the first grooves 65 on the two side surfaces of the first locking piece 6, and then the locking shell 7 is covered so that the second grooves 71 on the two side surfaces of the locking shell 7 clamp the two cap portions 21 of the key ring 2 to form a key ring assembly. The key ring assembly enters the interior of the key ring body 1 through the large end diameter of the waist-shaped hole at the lower end surface of the key ring body 1, and the limiting piece 3 in the self-locking mechanism is lifted up. Then, the key ring assembly slides to the smaller diameter of the waist-shaped hole to position it. Due to the action of the elastic piece 4 in the self-locking mechanism, the limiting piece 3 falls down to cover the large end diameter of the waist-shaped hole; when the key ring assembly needs to be removed, an external force is applied to lift the limiting piece 3, and the key ring assembly can be withdrawn along the large end diameter of the waist-shaped hole, and then the locking shell 7 in the key ring assembly is picked up, and the first locking piece 6 is pulled downward to expose the key ring 2 and the key can be removed.

[0039] Embodiment 2: as Figure 7 As shown, a key chain for preventing a key ring from being loosened, characterized in that it comprises a key chain body 1, wherein the key chain body 1 is connected to a key ring 2 through a locking assembly, and a slot 9 for accommodating a second locking member 10 is provided at the lower end surface of the key chain body 1, and the second locking member 10 is clearance-matched with the slot 9;

[0040] The locking assembly comprises a first locking member 6 and a locking shell 7 that cooperate with each other; the key ring 2 is a semi-open ring structure, a groove is provided at the position of the open ring away from the end face of the key ring, and both sides of the locking shell 7 are provided with second grooves 71 for clamping the groove;

[0041] The upper portion of the second locking member 10 is provided with an arc-shaped recessed portion 1001 along its circumference;

[0042] When the second locking piece 10 is inserted into the key chain body 1, a limiting hole 8 perpendicular to the slot 9 is provided on the key chain body 1, and the arc-shaped recessed portion 1001 overlaps with a section of the arc of the limiting hole 8. The positioning piece 5 is inserted into the limiting hole 8, thereby fixing the position of the second locking piece 10.

[0043] When in use, the second locking piece 10 with the key ring 2 is inserted into the slot 9 on the lower end surface of the key chain body 1, and then the positioning piece 5 is assembled into the limiting hole 8 of the key chain body 1 to position the second locking piece 10; when removing, just pull out the positioning piece 5 and then pull the second locking piece 10 with the key ring 2 downwards.

[0044] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent replacements for some of the technical features therein.

[0045] Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A key chain for preventing a key ring from loosening, characterized in that: It includes a keychain body, a key ring and a locking assembly. The key ring is a semi-open ring structure, and both ends of the open ring are provided with clamping parts that are clamped with the locking assembly. The locking assembly comprises a first locking member, a locking shell and a detachable connecting member that cooperate with each other; both sides of the lower end of the first locking member are provided with a first groove for clamping the clamping member, and both sides of the locking shell are provided with a second groove for clamping the clamping member; the lower halves of the two clamping members are clamped into the first groove, and the upper halves of the two clamping members are clamped into the second groove; The key chain body and the first locking member are assembled on the key chain body via a detachable connecting member; The clamping part is a cap portion provided at the open ring, and the diameter of the cap portion is greater than the ring width diameter of the key ring; The clamping piece is a groove opened at the end surface away from the key ring; The detachable connecting piece includes a waist-shaped hole provided at the bottom of the keychain body and a cavity provided at the lower part for accommodating the self-locking mechanism, the cavity is connected to the waist-shaped hole, and the waist-shaped hole is arranged such that the diameter of one end is greater than the diameter of the other end; The self-locking mechanism comprises a limiter, an elastic member and a positioning member; the elastic member is placed in a groove provided on the limiter, hanging ears are provided on both sides of the groove, a positioning hole is provided on the outer surface of the keychain body, and the positioning member passes through the hanging ears and the positioning hole on the groove; The first locking piece is composed of a first step, a second step, a third step and a base from top to bottom, and the first groove is arranged on two sides of the base; and the size of the first step and the third step are both greater than the size of the second step; the size of the second step is less than the size of the small end diameter of the waist-shaped hole, and at the same time, the size of the first step and the third step is greater than the size of the large end diameter of the waist-shaped hole; the first step and the large part of the key ring are in clearance fit; The first step and the second step pass through the large end diameter of the waist-shaped hole and enter the cavity accommodating the self-locking mechanism. The first step lifts the limiter, and the second step slides toward the smaller diameter of the waist-shaped hole to position it. The elastic member causes the limiter to fall and block the large end of the waist-shaped hole. A slot and a second locking member are provided at the lower end surface of the key fob body; An arc-shaped recessed portion is provided on the upper portion of the second locking member along its circumference; a limiting hole is provided on the outer surface of the key chain body and intersects with a slot at its bottom.

2. The key chain for preventing the key ring from loosening according to claim 1, characterized in that: The size of the second locking piece is smaller than the size of the positioning hole, and an arc section of the recessed portion overlaps with an arc section of the limiting hole.

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