Accessory tool

Abstract

Provided is an accessory tool that can be surely attached by inserting the mounting shaft on the display piece side into the mounting hole on the base side without performing high dimensional accuracy management. 【Solution means】The accessory tool includes an acrylic plate base 3 and a display piece 15. On the back surface 15b side of the display piece 15, as a mounting shaft, a lock spring piece 31 composed of an arm portion 27 and a claw portion 29 is arranged in a pair with a space therebetween. The arm portions 27, 27 of the pair of lock spring pieces 31, 31 are inserted into the mounting hole 13 of the base 3 in a state of being elastically reduced in diameter in a direction approaching each other, and when the respective claw portions 29, 29 come out of the base 3, they elastically recover, and the display piece 15 is attached to the base 3 in a state where the claw portions 29, 29 are locked. If the dimensional relationship that allows the insertion of the mounting shaft and the base 3 to be clamped between the claw portion 29 and the display piece 15 side is ensured, the display piece 15 can be surely attached to the base 3.

Description

Technical Field

[0001] The present invention relates to an accessory that can be attached to a bag, smartphone, etc., or used as a key holder.

Background Art

[0002] Accessories that can be detachably attached based on a display piece on which characters, designed letters, etc. are displayed have been conventionally sold. A mounting hole with a diameter of about 3 mm is formed in a flat base, and a mounting shaft provided on the back surface of the display piece is passed through the mounting hole and attached. Since the display piece is detachable, the type of the display piece to be attached and the attachment position to the base can be freely arranged.

[0003] Since the existing base is made of a synthetic resin such as relatively flexible silicone, when the mounting shaft is inserted into the mounting hole, the mounting shaft elastically contacts the inner peripheral surface of the mounting hole, and the display piece can be fitted precisely to the base.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, recently, an acrylic stand as shown in Patent Document 1 has appeared and has come to be widely sold. The acrylic stand has a main body formed by joining two acrylic plates with a paper or the like on which an image such as a character or a landscape is printed sandwiched therebetween. Since the acrylic plates have high transparency, the image is vividly displayed through the acrylic plates, making it look good. If the main body of this acrylic stand can also be used as the base of the above type of accessory tool, it is expected that the value as an accessory tool will be further enhanced. However, since the acrylic plate is hard, in order for the mounting shaft to fit exactly into the mounting hole of the base, the mounting shaft and the mounting hole must be manufactured with very high dimensional accuracy. If the dimensional accuracy is off even slightly, there is a risk that the mounting shaft will not fit into the mounting hole or that the mounting shaft will accidentally fall out of the mounting hole.

[0006] The present invention has been made by paying attention to the above conventional problems, and when using a base made of an acrylic plate, it is an object of the present invention to provide an accessory tool in which there is no risk that the mounting shaft will not fit into the mounting hole or that the mounting shaft will accidentally fall out of the mounting hole without performing high-dimensional accuracy management.

Means for Solving the Problems

[0007] The present invention has been made to solve the above problems, and includes a base and a display piece made of an acrylic plate and capable of visually recognizing an image from the surface. The base is provided with a mounting hole penetrating in the plate thickness direction. On the back side of the display piece, as a mounting shaft, a pair of lock spring pieces each composed of an arm portion protruding in a direction orthogonal to the display piece and a claw portion at the tip of the arm portion are arranged opposite to each other with a certain interval. The arm portions of the pair of lock spring pieces are inserted into the mounting hole from the surface of the base in a state of being elastically reduced in diameter in a direction approaching each other. Each claw portion elastically recovers when it comes out from the back surface of the base, and the display piece is attached to the base in a state where the claw portion is locked to the back surface. It is an accessory tool characterized by this.

[0008] Preferably, a columnar base end portion is interposed as a mounting shaft between the back surface of the display piece and the pair of lock spring pieces. Preferably, a spacer having a diameter expanded so as not to be inserted into the mounting hole is provided between the display piece and the base end portion, and when the display piece is attached to the base, a gap is formed between the back surface of the display piece and the front surface of the base due to the interposition of the spacer. Preferably, the locking surface of the claw portion is in planar contact with the back surface of the base. Preferably, the mounting hole is square, and the contour of the mounting shaft except for the claw portion is square when viewed from the axial direction. Preferably, the tip of the protruding direction of the claw portion bulges in a hemispherical shape toward the front, and the gap between the pair of claw portions becomes a half-cut surface and the claw portions face each other.

Advantages of the Invention

[0009] According to the accessory tool of the present invention, the display piece can be securely attached only by inserting the mounting shaft into the mounting hole of the base made of an acrylic plate without performing high-precision dimensional management.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0011] An accessory tool 1 according to an embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 3 indicates a horizontally long, slightly rectangular base. This base 3 is formed by sandwiching a display paper 5 printed with a single-colored background image between two transparent acrylic plates and adhering them together with an appropriate adhesive. The edges of the acrylic plates are directly adhered to each other. The background image can be viewed from the surface 3a through the acrylic plates.

[0012] At the center of the upper side of the base 3, a convex portion 7 extends in a semi-circular shape when viewed from the front. A round hole 9 is formed in the convex portion 7, and a ball chain 11 is inserted through this round hole 9. Four mounting holes 13, 13, 13, 13 are formed in the base 3 at equal intervals in the horizontal direction. The mounting holes 13 are square-shaped and extend in a straight shape of the same shape from the surface 3a to the back surface 3b of the base 3 and penetrate in the plate thickness direction.

[0013] Reference numeral 15 indicates a display piece. This display piece 15 is also configured using an acrylic plate similar to the base 3, and an image can be viewed from the surface 15a. However, the image consists of the face of a bear character and hiragana. When distinguishing, it is referred to as the "bear face" piece 15, the "ha character" piece 15, the "na character" piece 15, and the "ko character" piece 15. At the center on the back surface 15b side of this display piece 15, a disc-shaped spacer 17 is joined in a state where one of its plate surfaces is overlapped. A mounting shaft 19 projects coaxially from the other plate surface of this spacer 17, and its axial direction is orthogonal to the display piece 15. The mounting shaft 19 has a reduced diameter with respect to the spacer 17. The spacer 17 and the mounting shaft 19 are integrally molded products and are made of relatively rigid polyvinyl chloride. In FIG. 1, for convenience of viewing, the display piece 15, the spacer 17, and the mounting shaft 19 are shown disassembled.

[0014] As shown enlarged in FIGS. 2 and 3, the mounting shaft 19 has a shape in which necessary portions are concave with respect to a structure in which a cylindrical body and a hemispherical body having a diameter larger than that of the cylindrical body but smaller than that of the spacer 17 are integrally connected coaxially at one end side in the protruding direction, with the circular plane of the hemispherical body. The portions facing each other in the radial direction of the cylindrical body are respectively planes parallel to the axial direction, and the outer peripheral surface of the cylindrical body is composed of a pair of rectangular side surfaces 19a, 19a and arc side surfaces 19b, 19b where the outer shape of the cylindrical body between them remains as it is, and it is square-shaped when viewed from the axial direction. When viewed from the axial direction, the sizes of the portions formed by the rectangular side surfaces 19a, 19a and the arc side surfaces 19b, 19b can be inserted non-rotatably around the axis with a slight gap left in the above-described mounting hole 13.

[0015] The boundary between the cylindrical body and the circular plane is a stepped surface 19c. Also, the portion connecting the hemispherical body at the tip to the cylindrical body is recessed in a rectangular parallelepiped shape from the hemispherical body side to the middle in the axial direction of the cylindrical body to form a concave surface 21 and is halved. This concave surface 21 is composed of a pair of concave side surfaces 21b, 21b facing the concave top surface 21a. When viewed from FIG. 3, it is open in the downward and front-rear directions. The concave top surface 21a is orthogonal to the axial direction of the cylindrical body, and the concave side surfaces 21b, 21b are positioned parallel to the rectangular side surfaces 19a, 19a, and both are planes. Due to this concave surface 21, when viewed from the axial tip side, the hemispherical surfaces 23, 23 face each other with the concave top surface 21a as the halving surface.

[0016] The base end portion 25 of the mounting shaft 19 is composed of a solid substantially square prism portion whose outer surface is formed by a pair of rectangular side surfaces 19a, 19a and arc side surfaces 19b, 19b on the spacer 17 side. The arm portions 27, 27 are composed of a pair of portions halved by the concave surface 21 on the tip side in the protruding direction from the concave top surface 21a of the concave surface 21. Therefore, the outer surface of the arm portion 27 is composed of the rectangular side surface 19a, a part of the arc side surfaces 19b, 19b, and the concave side surface 21b, and the pair of arm portions 27, 27 protrude separated by the concave top surface 21a. The claw portions 29, 29 are composed of quarter spheres halved together with the arm portions 27, 27, and the outer surface is formed by the hemispherical surfaces 23, 23. The claw portion 29 is located at the tip of the protruding direction of the arm portion 27. When viewed from the axial direction, the claw portion 29 extends radially outward from the arm portion 27 by the amount of the stepped surface 19c. This stepped surface 19c serves as the locking surface of the claw portion 29. This locking surface 19c is parallel to the back surface 15b of the display piece 15.

[0017] The arm portion 27 and the claw portion 29 constitute the lock spring pieces 31, and a pair of lock spring pieces 31, 31 are arranged opposite to each other with a radial interval. Due to its shape and material characteristics, this lock spring piece 31 can swing like a spring with respect to the base end portion 25 interposed between it and the display piece 15 side.

[0018] The accessory tool 1 is configured as described above, and the procedure for attaching the display piece 15 to the base 3 will be described with reference to FIG. 4. As shown in FIG. 4(a), hold the display piece 15 by hand and push the lock spring pieces 31, 31 of the attachment shaft 19 protruding from the back surface 15b into the attachment hole 13 from the surface 3a of the base 3. As shown in FIG. 4(b), due to their spring characteristics, the lock spring pieces 31, 31 are elastically reduced in diameter by the gap of the concave surface 21 in the direction in which the tip ends of the arm portions 27, 27 approach each other, and while the claw portions 29, 29 are drawn into the arm portions 27, 27 side, they are inserted into the attachment hole 13.

[0019] As shown in FIG. 4(c), when the claw portions 29, 29 come out from the back surface 3b of the base 3, the arm portions 27, 27 elastically recover, and when viewed from the axial direction, the claw portions 29, 29 protrude outward from the arm portions 27, 27. Then, the locking surface 19c of the claw portion 29 abuts against the hole edge of the attachment hole 13 on the back surface 3b of the base 3 over its entire surface. On the other hand, the spacer 17 is not inserted into the attachment hole 13 but remains in contact with the hole edge of the attachment hole 13 on the surface 3a of the base 3, and the base 3 is sandwiched between the claw portion 29 and the spacer 17 on the display piece 15 side. Therefore, when the claw portion 29 abuts against the hole edge of the attachment hole 13 on the back surface 3b of the base 3, it automatically locks. In this state, as shown in FIG. 5, the display piece 15 is attached to the base 3.

[0020] The mounting shaft 19 on the side of the display piece 15 and the mounting hole 13 on the side of the base 3 are both square, and since the mounting shaft 19 is inserted into the mounting hole 13 in a non-rotatable manner around the axis, the display piece 15 can be mounted in the vertical, horizontal, left, and right orientations according to the image. This is convenient when there is a correct orientation, such as the "bear face" piece 15, the "ha character" piece 15, the "na character" piece 15, and the "ko character" piece 15. According to this accessory 1, if the insertion of the mounting shaft 19 as described above and the dimensional relationship that allows the base 3 to be clamped between the claw portions 29 and the display piece 15 side are ensured, the display piece 15 can be securely mounted on the base 3 without performing high-precision dimensional management.

[0021] Also, if the fingertips are inserted into the gaps formed by the spacer 17 and the claw portions 29, 29 are pinched and moved closer to each other, and then pushed into the mounting hole 13, the display piece 15 can be removed from the base 3, which is the opposite of the above. Therefore, the types of display pieces 15 mounted on the base 3 can be easily exchanged.

[0022] As described above, the embodiments of the present invention have been described in detail. However, the specific configuration is not limited to this embodiment, and design changes and the like within the scope not departing from the gist of the present invention are also included in the invention. For example, in the above embodiment, the base 3 is rectangular and a simple single-color background image is used. However, in actual productization, various images combined with characters or letters can be used, or various irregular outlines such as a star shape can be formed on the base 3.

Explanation of Reference Numerals

[0023] 1... Accessory 3... Base 3a... Front surface 3b... Back surface 5... Display paper 7... Convex portion 9... Round hole 11... Ball chain 13... Mounting hole 15... Display piece 15a... Front surface 15b... Back surface 17... Spacer 19... Mounting shaft 19a... rectangular side surface 19b... arc side surface 19c... stepped surface (locking surface) 21... concave surface 21a... concave top surface 21b... concave side surface 23... hemispherical surface 25... base end portion 27... arm portion 29... claw portion 31... lock spring piece

Claims

1. The display includes a base and a display piece that are made of an acrylic plate and allow an image to be viewed from the surface; The base is provided with a mounting hole penetrating in a plate thickness direction, A pair of lock spring pieces, each of which is made up of an arm portion protruding in a direction perpendicular to the display piece and a claw portion at the tip of the arm portion, are disposed on the back side of the display piece as an attachment shaft, the lock spring pieces being arranged opposite each other with a gap therebetween; This accessory is characterized in that the arm portions of the pair of locking spring pieces are inserted into the mounting hole from the surface of the base with their diameters elastically contracted in the direction of approaching each other, and when each claw portion comes out from the back surface of the base, it elastically recovers, and the display piece is attached to the base with the claw portions locked and engaged with the back surface.

2. In the accessory according to claim 1, This accessory is characterized in that a columnar base end portion is interposed as an attachment shaft between the back surface of the display piece and the pair of lock spring pieces.

3. The accessory according to claim 1 or 2, This accessory is characterized in that a spacer having an expanded diameter so that it cannot be inserted into the mounting hole is provided between the display piece and the base end, and when the display piece is attached to the base, a gap is formed between the back surface of the display piece and the front surface of the base due to the presence of the spacer.

4. In the accessory according to claim 3, An accessory device, characterized in that the engaging surface of the claw portion comes into planar contact with the rear surface of the base.

5. In the accessory according to claim 4, This accessory is characterized in that the mounting hole is rectangular, and the contour of the mounting shaft, excluding the claw portion, is also rectangular when viewed in the axial direction.

6. In the accessory according to claim 5, This accessory is characterized in that the protruding tips of the claws swell into a hemispherical shape toward the front, and the gap between a pair of claws forms a half-split surface so that the claws face each other.

Images