Password wheel assembly

Abstract

The password wheel assembly comprises an annular password wheel and an elastic wheel, an inner cavity for containing the elastic wheel is formed in the center of the annular password wheel, a plurality of positioning grooves are evenly formed in the inner wall of the circumference of the inner cavity, and a plurality of positioning protruding blocks matched with the positioning grooves are arranged on the outer wall of the circumference of the elastic wheel. Three elastic arms are arranged on the peripheral wall of the elastic wheel in the circumferential direction in an array mode, each elastic arm comprises an arc-shaped connecting section suspended on the peripheral wall of the elastic wheel and a connecting rib, and a positioning protruding block is arranged on the outer side of the other end of each arc-shaped connecting section. A swing area allowing the arc-shaped connecting section to move in an offset mode is formed among the inner side wall of the arc-shaped connecting section, the outer circumferential wall of the elastic wheel and the connecting rib, and a swing opening with the variable size is formed in the end, opposite to the connecting rib, of the swing area. And the annular password wheels cannot rotate due to shaking or slight touch, so that the stability performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of password locks, in particular to a password wheel assembly. Background Art

[0002] The prior patent application No. CN201310613991.6 discloses a password wheel assembly, which includes an annular password wheel with a plurality of positioning grooves uniformly arranged on the inner wall, an annular positioning wheel, and an elastic wheel provided with positioning protrusions. The elastic wheel is provided with notches along a fan shape on the circumference, and strip-shaped elastic arms are integrally provided at the circumferential openings of the notches. The positioning protrusions are arranged in the middle of the elastic arms, and the elastic arms on both sides of the positioning protrusions are symmetrically arranged. Since the positioning protrusions are arranged in the middle of the elastic arms, the elastic arms on both sides of the positioning protrusions are symmetrically arranged.

[0003] Problems existing in the above patent: It is found in actual applications that the structure with positioning protrusions provided at both ends of the elastic wheel has relatively poor stability. Especially after long-term use, the positioning protrusions are worn, and there is a loose fit between the positioning grooves on the inner wall of the annular password wheel and the positioning protrusions. The annular password wheel will shake or rotate when touched gently. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the defects and deficiencies existing in the prior art, and to provide a password wheel assembly.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: A password wheel assembly includes an annular password wheel and an elastic wheel. An inner cavity for accommodating the elastic wheel is provided at the center of the annular password wheel. A plurality of positioning grooves are uniformly arranged on the inner circumferential wall of the inner cavity. A plurality of positioning convex blocks matching with the positioning grooves are provided on the outer circumferential wall of the elastic wheel. Three elastic arms are arranged in an array along the circumferential direction on the outer peripheral wall of the elastic wheel. Each elastic arm includes an arc-shaped connecting section suspended on the outer peripheral wall of the elastic wheel. One end of each arc-shaped connecting section extends inward toward the elastic wheel to form an independent connecting rib. A positioning convex block is provided on the outer side of the other end of each arc-shaped connecting section. The positioning convex block and the connecting rib are located at both ends of an arc-shaped connecting section. A swinging area for the arc-shaped connecting section to deflect is formed among the inner side wall of the arc-shaped connecting section, the outer peripheral wall of the elastic wheel, and the connecting rib, and a swinging opening with variable size is provided at one end of the swinging area relative to the connecting rib. The connecting ribs on the side where adjacent two arc-shaped connecting sections are close to each other are arranged opposite to the swinging opening.

[0006] As a preferred technical solution of the utility model, the positioning groove is an arc-shaped groove, and the outer end face of the positioning convex block is an arc surface.

[0007] As a preferred technical solution of the utility model, it further includes an annular positioning wheel, and the annular positioning wheel and the elastic wheel are stacked and arranged in the annular password wheel.

[0008] As a preferred technical solution of the present utility model, at least two first slots are provided on the inner peripheral wall of the elastic wheel, and at least two second slots are provided on the inner peripheral wall of the annular positioning wheel, and the two first slots and the two second slots are in corresponding positions.

[0009] To sum up, the beneficial effects of the present utility model are as follows: Through three elastically-armed arrays, the positioning bumps at multiple points can be engaged with the respective positioning slots. The annular cipher wheel will not rotate due to shaking or light touch, improving the stability performance and providing good tactile feedback. In addition, connecting ribs and positioning bumps are provided at both end portions on both sides of each elastic arm, and the length of the arc-shaped connecting section is longer, forming a larger swinging area. The arc-shaped connecting section swings more easily and flexibly under pressure. Based on this structure, hard extrusion can be avoided, excessive wear of the positioning bumps can be avoided, and the service life can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is an exploded view of the present utility model;

[0011] Figure 2 is a schematic structural view of the elastic wheel in an embodiment of the present utility model;

[0012] Figure 3 is a schematic structural view of the annular positioning wheel in an embodiment of the present utility model.

[0013] Reference numerals: 1, annular cipher wheel; 2, elastic wheel; 3, positioning slot; 4, positioning bump; 5, elastic arm; 6, swinging area; 7, connecting rib; 8, annular positioning wheel; 9, first slot; 10, second slot; 11, arc-shaped connecting section; 12, swinging opening. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below with reference to specific embodiments and the accompanying drawings. However, the following embodiments are only the preferred embodiments of the present utility model and not all of them. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present utility model.

[0015] The specific embodiments of the present utility model will be described below with reference to the drawings.

[0016] Such as Figures 1 to 3A password wheel assembly shown in the figure includes an annular password wheel 1 and an elastic wheel 2. An inner cavity for accommodating the elastic wheel 2 is provided at the center of the annular password wheel 1. A plurality of positioning grooves 3 are evenly provided on the inner circumferential wall of the inner cavity. A plurality of positioning bumps 4 cooperating with the positioning grooves 3 are provided on the outer circumferential wall of the elastic wheel 2. Three elastic arms 5 are arranged in an array along the circumferential direction on the outer peripheral wall of the elastic wheel 2. Each of the elastic arms 5 includes an arc-shaped connecting section 11 suspended from the outer peripheral wall of the elastic wheel 2. One end of each arc-shaped connecting section 11 extends inward toward the elastic wheel 2 to form an independent connecting rib 7. A positioning bump 4 is provided on the outer side of the other end of each arc-shaped connecting section 11. The positioning bump 4 and the connecting rib 7 are located at both ends of an arc-shaped connecting section 11. A swinging area 6 for the arc-shaped connecting section 11 to deflect is formed among the inner side wall of the arc-shaped connecting section 11, the outer peripheral wall of the elastic wheel 2, and the connecting rib 7. A swinging opening 12 with variable size is provided at one end of the swinging area 6 relative to the connecting rib 7. The connecting ribs 7 on the side where adjacent two arc-shaped connecting sections 11 are close to each other are arranged opposite to the swinging opening 12. In this embodiment, the positioning groove 3 is an arc-shaped groove, the outer end face of the positioning bump 4 is an arc surface, and the elastic wheel 2 is made of plastic material.

[0017] Through the three elastic arms 5 arranged in an array, the positioning bumps 4 at multiple points can be engaged and cooperated with the respective positioning grooves 3. The annular password wheel 1 will not rotate due to shaking or light touch, improving the stability performance and providing good tactile feedback. In addition, the connecting rib 7 and the positioning bump 4 are provided at both ends of each elastic arm 5, the length of the arc-shaped connecting section 11 is longer, and the formed swinging area 6 is larger. The arc-shaped connecting section 11 swings more easily and flexibly under pressure. Based on this structure, hard extrusion can be avoided, excessive wear of the positioning bump 4 can be avoided, and the service life can be improved.

[0018] The annular positioning wheel 8 and the elastic wheel 2 are stacked and arranged in the annular password wheel 1. At least two first slots 9 are provided on the inner peripheral wall of the elastic wheel 2. At least two second slots 10 are provided on the inner peripheral wall of the annular positioning wheel 8. The two first slots 9 and the two second slots 10 are in corresponding positions. In actual installation, the convex strips on the outer side of the password lock tube are adapted to the first slots 9 and the second slots 10, and the password lock tube is directly inserted into the annular password wheel 1 in alignment.

[0019] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A code wheel assembly, comprising an annular code wheel (1) and an elastic wheel (2), wherein the center of the annular code wheel (1) is provided with an inner cavity for accommodating the elastic wheel (2), a plurality of positioning grooves (3) are evenly arranged on the inner wall of the inner cavity, and a plurality of positioning protrusions (4) cooperating with the positioning grooves (3) are arranged on the outer wall of the elastic wheel (2), characterized in that: The outer peripheral wall of the elastic wheel (2) is provided with three elastic arms (5) arranged in an array along the circumferential direction, each of the elastic arms (5) comprises an arc-shaped connecting section (11) suspended on the outer peripheral wall of the elastic wheel (2), the inner side of one end of each arc-shaped connecting section (11) extends in the direction of the elastic wheel (2) to form an independent connecting rib (7), and the outer side of the other end of each arc-shaped connecting section (11) is provided with a positioning protrusion (4), the positioning protrusion (4) and the connecting rib (7) are located at both side ends of an arc-shaped connecting section (11), a swinging area (6) for the arc-shaped connecting section (11) to deflect is formed between the inner side wall of the arc-shaped connecting section (11), the outer peripheral wall of the elastic wheel (2) and the connecting rib (7), and a swinging opening (12) of variable size is provided at one end of the swinging area (6) relative to the connecting rib (7), and the connecting rib (7) and the swinging opening (12) are arranged opposite to each other on one side of two adjacent arc-shaped connecting sections (11).

2. The cipher wheel assembly according to claim 1, characterized in that: The positioning groove (3) is an arc-shaped groove, and the outer end surface of the positioning protrusion (4) is an arc surface.

3. The cipher wheel assembly according to claim 1, characterized in that: It also comprises an annular positioning wheel (8), which is arranged in the annular cipher wheel (1) after being overlapped with the elastic wheel (2).

4. The cipher wheel assembly according to claim 3, characterized in that: The inner circumferential wall of the elastic wheel (2) is provided with at least two first slots (9), and the inner circumferential wall of the annular positioning wheel (8) is provided with at least two second slots (10), and the two first slots (9) and the two second slots (10) are located in corresponding positions.

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