JP2015161136A - key head cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a key head cover installable on a key different in a position of a hole of a key head.SOLUTION: A key head cover is respectively provided with a cover body 3 having a key head storage part 3a by joining a first cover body 20 and a second cover body 30 and shaft support parts 23 and 33 having a shaft 4 supported by the key head storage part 3a of the cover body 3 and inserted through a hole 12 of a key head 11 and having elasticity in a first key head storage part 21 and a second key head storage part 31 for forming the key head storage part 3a, and these shaft support parts 23 and 33 support so that the shaft 4 does not move in a direction orthogonal to an axial direction with both end parts in the axial direction of the shaft 4 recessed by being pressed, and can support the shaft 4 in an arbitrary position corresponding to a position of the hole 12 of the key head 11 of a key 1 in the shaft support parts 23 and 33, and can be installed on the key 1 different in the position of the hole 12 of the key head 11.

Description

  The present invention relates to a key head cover attached to a key head of a key for operating a lock.

As a key for operating the lock, a key composed of a key blade inserted into a key hole of the lock and a key head used for rotating the key blade by pinching with a finger without entering the key hole is known.
A key head cover to be attached to a key head of a key is disclosed in Patent Document 1.
The key head cover includes one cover body having a locking shaft and the other cover body joined to the one cover body, and the key head of the key is engaged with the one cover body and the hole of the key head is engaged. It is placed so that it fits on the stop shaft, and the other cover is joined to one cover body so that the key head is sandwiched between the one cover body and the other cover body, and the key head is attached to the lock shaft. It keeps it from falling out.

JP-A-8-28106

The above-described conventional key head cover fits the hole of the key head to the locking shaft and holds the key head so that the key head does not come off by the locking shaft. Therefore, the position of the locking shaft of one cover body is the hole of the key head. The position matches the position of.
On the other hand, there are many keys whose key head hole positions are different.
For this reason, in order to attach a key head cover to a key having a different position of the key head hole, the key head cover must be set with the position of the locking shaft depending on the position of the key head hole of the key. A number of key head covers having different locking shaft positions must be manufactured.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a key head cover that can be attached to a key having a different position of the hole of the key head.

The present invention comprises a cover body that houses a key head of a key, and a shaft that is inserted into a hole of the key head of the key.
The cover body joins the first cover body and the second cover body with a joining means, and the key head of the key is formed by the first key head housing portion of the first cover body and the second key head housing portion of the second cover body. Forming a key head accommodating portion for accommodating the key blade of the key so as to protrude from the cover body,
The first key head housing portion and the second key head housing portion have shaft support portions facing each other,
Each of the shaft support portions is larger than a cross section of the shaft, and is supported by an elastic force so as not to move both axial ends of the shaft in a direction perpendicular to the axial direction. is there.

In the key head cover of the present invention, the first key head accommodating portion is provided with a first sheet having elasticity as a shaft support portion,
A second sheet having elasticity is provided in the second key head housing portion to serve as a shaft support portion,
By joining the first cover body and the second cover body, one end portion in the axial direction of the shaft dents the first sheet, and the one end portion in the axial direction of the shaft is pivoted by the elastic force of the first sheet. The other end in the axial direction of the shaft is recessed in the second sheet, and the other end in the axial direction of the shaft is in the axial direction by the elastic force of the second sheet. It can support so that it may not move to the orthogonal direction.
If it does in this way, it can be set as a shaft support part by providing a sheet | seat in the key head accommodating part of a cover body.

In the key head cover of the present invention, a first concave portion is formed in the first key head accommodating portion, and the first sheet having elasticity is provided in the first concave portion to serve as a shaft support portion.
A second recessed portion may be formed in the second key head accommodating portion, and the second sheet having elasticity may be provided in the second recessed portion to serve as a shaft support portion.

In the key head cover of the present invention, the first key head housing portion is recessed from the joint portion of the first cover body, and a part of the recessed first key head housing portion is a notch and opens to the periphery of the first cover body. And
The second key head housing portion is recessed from the joint portion of the second cover body, and a part of the recessed second key head housing portion opens at the periphery of the second cover body at the notch portion.
The first key head accommodating portion and the second key head accommodating portion form a key head accommodating portion for accommodating a key head of a key, and the cutout portion of the first key head accommodating portion and the second key head accommodating An opening through which the key blade of the key is inserted can be formed with the notch portion.
In this way, the key head of the key housed in the key head housing portion of the cover body cannot be seen from the cover body, so that the appearance is good.

In the key head cover of the present invention, the cover body has a key head accommodating portion on one side in the length direction,
With the cover body attached to the key head of the key, the cover body rotates with respect to the key between the first posture and the second posture,
When the cover body is in the first posture with respect to the key, the length direction of the cover body faces the length direction of the key,
When the cover main body is in the second posture with respect to the key, the length direction of the cover main body can be directed in a direction perpendicular to the length direction of the key.
If it does in this way, a key can be rotated by force smaller than a 1st attitude | position by making a cover main body into a 2nd attitude | position.

The key head cover of the present invention can have a finger hooking hole on the other side in the longitudinal direction of the cover body.
If it does in this way, since a cover main body can be rotated by putting a finger on a hole, it is easy to rotate.

The present invention comprises a cover body that houses a key head of a key, and a shaft that is inserted into a hole of the key head of the key.
The cover body joins the first cover body and the second cover body with a joining means, and the key head of the key is formed by the first key head housing portion of the first cover body and the second key head housing portion of the second cover body. Forming a key head accommodating portion for accommodating the key blade of the key so as to protrude from the cover body,
The shaft has elasticity at both ends in the axial direction,
The first key head housing portion and the second key head housing portion have shaft support portions larger than the cross section of the shaft,
By pressing one axial end portion of the shaft against the shaft support portion of the first key head housing portion and pressing the other axial end portion of the shaft against the shaft support portion of the second key head housing portion, It is possible to provide a key head cover in which both axial ends of the shaft are supported so as not to move in a direction orthogonal to the axial direction.

  The present invention can be a key in which the key head cover according to any one of claims 1 to 7 is attached to the key head of the key.

According to the present invention, since the shaft can be supported at an arbitrary position in the shaft support portion of the cover body, the key head cover can be locked by changing the shaft support position according to the key having a different position of the key head hole. Can be attached to any key head.
Moreover, since the key head hole is inserted into the shaft, the key is not removed from the cover body.

It is a perspective view of the key head cover of the state disassembled with the key. It is a front view of the assembled key head cover. It is the side view seen from one side of the assembled key head cover. It is the side view seen from the other side of the assembled key head cover. It is the bottom view seen from under the assembled key head cover. It is a front view of the state which attached the key head cover to the key. It is AA sectional drawing of FIG. It is sectional drawing of the state which attached the key head cover to the key which shows 2nd Embodiment.

FIG. 1 is a perspective view of a key head cover disassembled with a key. As shown in FIG. 1, the key 1 is provided with a key blade 10 to be inserted into a key hole (not shown) of the lock and an end portion in the lengthwise direction of the key blade 10 and pinched with a finger of a hand without entering the key hole. It consists of a key head 11 used to rotate the blade 10.
The key head 11 has a hole 12 penetrating through one surface 11a and the other surface 11b. The position of the hole 12 of the key head 11 differs depending on the type of the key 1 and the like. For example, as shown by a solid line in FIG. 1, a key having a hole 12 at a position near the key blade 10 on the periphery of the key head 11, or near the center of the key head 11 as shown by a virtual line in FIG. 1. There may be a key with a hole 12 in position.

In the key shown in FIG. 1, the key blade 10 has an elongated plate shape, and the key head 11 has a circular plate shape. The hole 12 of the key head 11 is circular.
The shape of the key is not limited to that described above. For example, the key blade 10 inserted into the keyhole of the lock has a cylindrical shape and a key having a protrusion, and the key head 11 has a rectangular plate-like key.
The hole 12 of the key head 11 is not limited to a circle. For example, there is a key head having a rectangular hole or an oval hole.
The size of the hole 12 of the key head 11 is not constant, and there is a key head having a hole having a different size depending on the type and size of the key.
The key head cover 2 has a cover body 3 and a shaft 4.
The cover body 3 includes a first cover body 20 and a second cover body 30 joined to the first cover body 20.
The shaft 4 is supported by the first cover body 20 and the second cover body 30 and is inserted into the hole 12 of the key head 11 of the key 1.

The first cover body 20 has a plate shape larger than the size of the key head 11 of the key 1. A first key head housing portion 21 for housing the key head 11 of the key 1 on a joint side surface 20 a to which the second cover body 30 of the first cover body 20 is joined, and a joint for joining the second cover body 30. Part 22.
The first key head accommodating portion 21 is provided with the key head 11 of the key 1 so that one surface 11a thereof is opposed, preferably in contact with the first key head accommodating portion 21, and the key head 11 of the key 1 is provided in the first key head accommodating portion 21. In this state, the key blade 10 of the key 1 protrudes outward from the peripheral edge portion of the first cover body 20.

The first key head accommodating portion 21 has a shaft support portion 23. Preferably, the shaft support portion 23 is provided near the center of the first key head accommodating portion 21.
The shaft support portion 23 is made of a material that is more easily elastically deformed than the first cover body 20, and the shaft support portion 23 is elastically depressed by pressing the axial one end portion 4 a of the shaft 4, and the shaft of the shaft 4 is elastically deformed. The direction end 4a is supported so as not to move in a direction orthogonal to the axial direction.
The shaft support portion 23 is larger than the cross section of the shaft 4, and can support the axial end portion 4a of the shaft 4 so as not to move in a direction orthogonal to the axial direction at an arbitrary position within the region of the shaft support portion 23. .

The second cover body 30 is the same size as the first cover body 20 and accommodates the second key head in the same manner as the first cover body 20 on the joining side surface 30a to which the first cover body 20 of the second cover body 30 is joined. It has the part 31 and the junction part 32 for joining with the 1st cover body 20. As shown in FIG.
A second key head accommodating portion 31 of the second cover body 30 is provided so that the other surface 11b of the key head 11 of the key 1 faces, preferably touches.
The second key head accommodating portion 31 has a shaft support portion 33.
The shaft support portion 33 supports the other axial end portion 4b of the shaft 4 so as not to move in a direction orthogonal to the axial direction, like the shaft support portion 23 of the first cover body 20.
That is, the joint side surface 20a of the first cover body 20 and the joint side surface 30a of the second cover body 30 are symmetrical.

As shown in FIGS. 2 to 5, the first cover body 20 and the second cover body 30 are joined by joining the joint portion 22 of the first cover body 20 and the joint portion 32 of the second cover body 30 with a joining means. The cover body 3 is formed.
The first key head accommodating portion 21 of the first cover body 20 and the second key head accommodating portion 31 of the second cover body 30 face each other, and the first key head accommodating portion 21 and the second key head accommodating portion 31 The head accommodating portion 3a is formed.
The shaft support portion 23 of the first cover body 20 and the shaft support portion 33 of the second cover body 30 face each other, and the axial support ends 23 and the shaft support portion 33 are perpendicular to the axial direction of both ends of the shaft 4. Support so as not to move in the direction.

The key head cover 2 is attached to the key head 11 of the key 1 as follows.
One surface 11 a of the key head 11 of the key 1 is brought into contact with the first key head accommodating portion 21 of the first cover body 20, the shaft 4 is inserted into the hole 12 of the key head 11, and the axial one end portion 4 a of the shaft 4 is It contacts the shaft support portion 23.
The second cover body 30 is overlapped with the first cover body 20, the second key head accommodating portion 31 of the second cover body 30 is in contact with the other surface 11b of the key head 11 of the key 1, and the shaft support portion 33 is pivoted. 4 is in contact with the other axial end 4b.
The joining portion 22 of the first cover body 20 and the joining portion 32 of the second cover body 30 are joined by joining means, and the first cover body 20 and the second cover body 30 are joined to form the cover body 3. 6, the key head cover 2 (cover body 3) is attached to the key head 11 of the key 1. The key blade 10 of the key 1 protrudes from the key head cover 2 (cover body 3) to the outside.

By attaching the key head cover 2 to the key head 11 of the key 1, the axial end portion 4a of the shaft 4 does not move in the direction orthogonal to the axial direction at the shaft support portion 23 of the first cover body 20, as shown in FIG. The other end 4b in the axial direction of the shaft 4 is supported by the shaft support portion 33 of the second cover body 30 so as not to move in a direction orthogonal to the axial direction.
Thereby, since the shaft 4 does not move in the direction orthogonal to the axial direction, the key 1 can be supported by the shaft 4 so as not to come off from the key head cover 2 (cover body 3).

Since the shaft 4 can be supported at an arbitrary position of the shaft support portion 23 of the first cover body 20 and an arbitrary position of the shaft support portion 33 of the second cover 30, the hole 12 of the key head 11 of the key 1 is supported. The shaft 4 can be supported at a position corresponding to the position. For example, in the case of the key 1 of the hole 12 at the position indicated by the phantom line in FIG. 1, the shaft 4 can be supported at the position indicated by the phantom line in FIG.
Since it is like this, the same key head cover 2 can be attached to the key 1 from which the position of the hole 12 of the key head 11 differs.

Next, a specific shape of the key head cover 2 will be described.
The first cover body 20 has a substantially rectangular plate shape, and has a concave portion 24 near one end in the length direction of the joining side surface 20a. The concave portion 24 serves as a first key head accommodating portion 21.
A finger hooking hole 25 is formed at the other end in the length direction of the first cover body 20.
The hole 25 penetrates the joining side surface 20a and the surface side surface 20b of the first cover body 20.
The first cover body 20 has a first recessed portion 26 near the center of the recessed portion 24, and a first sheet made of an elastic material, for example, a rubber sheet 27, is attached to the first recessed portion 26 as the shaft support portion 23.

  The concave portion 24 of the first cover body 20 opens at the peripheral edge 20c of the first cover body 20 at the cutout portion 28 on one side in the length direction. The key blade 10 of the key 1 protrudes outward from the peripheral edge 20 c of the first cover body 20 from between one end 28 a and the other end 28 b of the notch 28.

  The surface of the first cover body 20 other than the recess 24 and the hole 25 on the joint side surface 20a is a joint portion 22, and the joint side portion 22 is a flat surface having a large area.

The second cover body 30 has a substantially rectangular plate shape with the same length as the first cover body 20, and has a recess 34 on one side in the length direction of the joining side surface 30 a, similar to the first cover body 20. Reference numeral 34 denotes a second key head accommodating portion 31.
A finger hooking hole 35 is formed on the other side in the length direction of the second cover body 30. The hole 35 penetrates the joint side surface 30 a and the surface side surface 30 b of the second cover body 30.
Similar to the first cover body 20, the second cover body 30 has a second recessed portion 36 in the recessed portion 34, and a second sheet made of an elastic material, for example, a rubber sheet 37, is attached to the second recessed portion 36 to support the shaft. The portion 33 is used.

  The concave portion 34 of the second cover body 30 is open to the peripheral edge 30c of the second cover body 30 at the cutout portion 38 on one side in the length direction, like the concave portion 24 of the first cover body 20. The key blade 10 of the key 1 protrudes outward from the peripheral edge 30c of the second cover body 30 from between one end 38a and the other end 38b of the notch 38.

  A surface of the second cover body 30 other than the concave portion 34 and the hole 35 in the joint side surface 30a is a joint portion 32, and the joint portion 32 is a flat surface having a large area.

The joint portion 22 of the first cover body 20 and the joint portion 32 of the second cover body 30 are adhered with an adhesive to join the first cover body 20 and the second cover body 30 to form the cover body 3. That is, the adhesive is a joining means.
Thus, the cover main body 3 has a key head accommodating portion 3 a formed by the concave portion 24 of the first cover body 20 and the concave portion 34 of the second cover body 30 on one side in the length direction. It has holes 25 and 35 for finger hanging on the other side in the direction.
The key head accommodating portion 3a of the cover body 3 is closed, and one side in the length direction of the key head accommodating portion 3a is formed by the notched portion 28 of the first cover body 20 and the notched portion 38 of the second cover body 30. The opening 3b is opened to the outside of the cover body 3.

As shown in FIGS. 6 and 7, with the key head cover 2 attached to the key head 11 of the key 1, the key blade 10 of the key 1 protrudes outward from the opening 3b of the key head cover 2 (cover body 3). To do.
One surface 11a of the key head 11 of the key 1 is in contact with the recess 24 (first key head accommodating portion 21) of the first cover body 20, and the other surface 11b of the key head 11 is a recess 34 ( It contacts the second key head accommodating portion 31).
As a result, the key head 11 of the key 1 is covered with the key head cover 2 and is not visible from the outside.

  As shown in FIG. 6, with the key head cover 2 attached to the key head 11 of the key 1, the cover body 3 is connected to the key 1 by the shaft 4 and the hole 12 of the key head 11, and the solid line in FIG. It rotates over the 1st attitude | position shown and the 2nd attitude | position shown with a virtual line in FIG.

When the cover body 3 is in the second posture with respect to the key 1, the length direction of the cover body 3 is directed in a direction orthogonal to the length direction of the key 1.
Thereby, the rotational force of the key 1 can be increased by rotating the key head cover 2 with a small force.

As shown in FIG. 1, a first protrusion 29 a and a second protrusion 29 b are provided near the opening 28 in the recess 24 of the first cover body 20.
When the cover body 3 is rotated from the second position to the first position and the cover body 3 is rotated to the first position, the first protrusion 29a comes into contact with the key blade 10 of the key 1 as shown in FIG. Since the person who rotates the main body 3 feels a click feeling, it can be sensibly known that the cover main body 3 has rotated to the first posture with respect to the key 1.
When the cover body 3 is rotated from the first position to the second position and the cover body 3 is rotated to the second position, the second protrusion 29b comes into contact with the key blade 10 of the key 1 as shown in FIG. Since the person who rotates the main body 3 feels a click feeling, it can be sensibly known that the cover main body 3 has rotated to the second posture with respect to the key 1.

The hole 25 of the first cover body 20 and the hole 35 of the second cover body 30 are sized to allow human fingers to be inserted, and the cover body 3 has holes 25 and 35 through which fingers can be inserted and hooked. .
Thereby, since the cover main body 3 can be rotated by putting a finger on the holes 25 and 35, even a handicapped person who does not have gripping force can easily rotate the key 1 with the cover main body 3.

In the above-described embodiment, the bonding means is an adhesive, but is not limited thereto.
For example, a screw insertion hole is formed in one joint, and a screw hole is formed in the other joint. A screw is inserted from the screw insertion hole, the screw is screwed into the screw hole, and one of the joint portions and the other joint portion are fastened and joined to form a joining means.
In addition, an engagement protrusion is provided at one joint, and an engagement recess is provided at the other joint. By engaging the engaging protrusion and the engaging recess to join one joining part and the other joining part, a joining means is obtained.

  In the embodiment, the concave portions 24 and 34 are formed on the joint side surfaces 20a and 30a of the first cover body 20 and the second cover body 30 to form the first key head housing portion 21 and the second key head housing portion 31, respectively. 20a and 30a are joined portions 22 and 32, but a part of the joined side surfaces 20a and 30a is a first key head accommodating portion 21 and a second key head accommodating portion 31, and protrusions are provided on the periphery of the joined side surfaces 20a and 30a. The projecting pieces can be the joining portions 22 and 32.

  In the embodiment, a first concave portion 26 and a second concave portion 36 are formed in the first key head accommodating portion 21 and the second key head accommodating portion 31 of the first cover body 20 and the second cover body 30, and the first The first and second sheets (rubber sheets 27 and 37) having elasticity are provided in the recessed portion 26 and the second recessed portion 36 to form the shaft support portions 23 and 33. However, the first key head accommodating portion 21 and the second key are provided. The head support portion 31 may be provided with first and second sheets (rubber sheets 27 and 37) having elasticity to form shaft support portions 23 and 33.

In addition, an annular protrusion is provided on the first key head accommodating portion 21 and the second key head accommodating portion 31 of the first cover body 20 and the second cover body 30, and the region inside the protrusion is defined as the shaft support portion 23. , 33.
In this case, elastic first and second sheets (rubber sheets 27 and 37) are provided in the inner region of the protruding portion to form the elastic shaft support portions 23 and 33.

  Also, the first cover body 20 and the second cover body 30 are made of hard resin, and a part of the first key head housing portion 21 and the second key head housing portion 31 is injection-molded as soft resin, so that it is molded with soft resin. These parts can be used as the shaft support parts 23 and 33 having elasticity.

The shaft support portion 32 of the first cover body 20 and the shaft support portion 33 of the second cover body 30 are not limited to be the same, and the shaft support portion 23 of the first cover body 20 and the shaft of the second cover body 30 are not limited. The support portion 33 may be different.
For example, the shaft support portion 23 of the first cover body 20 is provided with a rubber sheet 27 in the first recessed portion 26, and the shaft support portion 33 of the second cover body 30 is provided with a rubber sheet 37 on a part of the joining surface 30a. Shall be.

Further, in the embodiment, the first concave portion 26 and the second concave portion 36 are formed in the first key body accommodating portion 21 and the second key head accommodating portion 31 of the first cover body 20 and the second cover body 30, and the first The first concave portion 26 and the second concave portion 36 are provided with first and second sheets (rubber sheets 27 and 37) having elasticity to form shaft support portions 23 and 33. The shaft support portions 23 and 33 have elasticity. The shaft 4 can be elastic.
For example, as shown in FIG. 8, first and second sheets (rubber sheets 27 and 37) having elasticity are provided at one axial end 4 a and the other axial end 4 b of the shaft 4.
One axial end 4 a of the shaft 4 is pressed against the shaft support portion 23 of the first cover body 20, and the other axial end 4 b is pressed against the shaft support portion 33 of the second cover body 30. Thereby, both axial ends of the shaft 4 are supported by the shaft support portions 23 and 33 so as not to move in a direction perpendicular to the axial direction by elastic force.

The shaft 4 is not limited to a circular cross section, and may be a polygonal cross section or a rectangle.
Also, a plurality of shafts 4 having different diameters are prepared, and when the diameter of the hole 12 of the key head 11 of the key 1 is greatly different, the shaft 4 having a diameter corresponding to the diameter of the hole 12 is used. Can do.

  DESCRIPTION OF SYMBOLS 1 ... Key, 2 ... Key head cover, 3 ... Cover main body, 3a ... Key head accommodating part, 3b ... Opening part, 4 ... Axis, 4a ... One axial end part, 4b ... Other axial end part, 10 ... Key blade, DESCRIPTION OF SYMBOLS 11 ... Key head, 11a ... One surface, 11b ... Other surface, 12 ... Hole, 20 ... 1st cover body, 20a ... Joining side surface, 20b ... Outer side surface, 20c ... Periphery, 21 ... 1st key head accommodating part , 22 ... joint part, 23 ... shaft support part, 24 ... concave part, 25 ... hole for finger hook, 26 ... first concave part, 27 ... rubber sheet (first sheet having elasticity), 28 ... notch part, 30 ... 2nd cover body, 30a ... Joint side surface, 30b ... Outer side surface, 30c ... Periphery, 31 ... 2nd key head accommodating part, 32 ... Joint part, 33 ... Shaft support part, 34 ... Recessed part, 35 ... Hole for finger hooking, 36 ... second recessed portion, 37 ... rubber sheet (elastic first Sheet), 38 ... cut-out portion.

Claims (8)

A cover body that houses the key head of the key, and a shaft that passes through the hole of the key head of the key,
The cover body joins the first cover body and the second cover body with a joining means, and the key head of the key is formed by the first key head housing portion of the first cover body and the second key head housing portion of the second cover body. Forming a key head accommodating portion for accommodating the key blade of the key so as to protrude from the cover body,
The first key head housing portion and the second key head housing portion have shaft support portions facing each other,
Each of the shaft support portions is larger than a cross section of the shaft, and supports both ends of the shaft in the axial direction so as not to move in a direction orthogonal to the axial direction by an elastic force. A first sheet having elasticity is provided in the first key head housing portion to serve as a shaft support portion,
A second sheet having elasticity is provided in the second key head housing portion to serve as a shaft support portion,
By joining the first cover body and the second cover body, one end portion in the axial direction of the shaft dents the first sheet, and the one end portion in the axial direction of the shaft is pivoted by the elastic force of the first sheet. The other end in the axial direction of the shaft is recessed in the second sheet, and the other end in the axial direction of the shaft is in the axial direction by the elastic force of the second sheet. 2. The key head cover according to claim 1, wherein the key head cover is supported so as not to move in an orthogonal direction. Forming a first recessed portion in the first key head accommodating portion, providing the first sheet having elasticity in the first recessed portion as a shaft support portion;
The key head cover according to claim 2, wherein a second recessed portion is formed in the second key head housing portion, and the second sheet having elasticity is provided in the second recessed portion to serve as a shaft support portion. The first key head housing portion is recessed from the joint portion of the first cover body, and a part of the recessed first key head housing portion is opened at the periphery of the first cover body at a notch portion.
The second key head housing portion is recessed from the joint portion of the second cover body, and a part of the recessed second key head housing portion opens at the periphery of the second cover body at the notch portion.
The first key head accommodating portion and the second key head accommodating portion form a key head accommodating portion for accommodating a key head of a key, and the cutout portion of the first key head accommodating portion and the second key head accommodating The key head cover according to claim 1, 2 or 3, wherein an opening through which the key blade of the key is inserted is formed by the notch portion. The cover body has a key head accommodating portion on one side in the length direction,
With the cover body attached to the key head of the key, the cover body rotates with respect to the key between the first posture and the second posture,
When the cover body is in the first posture with respect to the key, the length direction of the cover body faces the length direction of the key,
5. The key head cover according to claim 1, wherein when the cover body is in the second posture with respect to the key, the length direction of the cover body is directed in a direction orthogonal to the length direction of the key.   The key head cover according to claim 5, further comprising a finger hooking hole on the other side in the longitudinal direction of the cover body. A cover body that houses the key head of the key, and a shaft that passes through the hole of the key head of the key,
The cover body joins the first cover body and the second cover body with a joining means, and the key head of the key is formed by the first key head housing portion of the first cover body and the second key head housing portion of the second cover body. Forming a key head accommodating portion for accommodating the key blade of the key so as to protrude from the cover body,
The shaft has elasticity at both ends in the axial direction,
The first key head housing portion and the second key head housing portion have shaft support portions larger than the cross section of the shaft,
By pressing one axial end portion of the shaft against the shaft support portion of the first key head housing portion and pressing the other axial end portion of the shaft against the shaft support portion of the second key head housing portion, A key head cover, wherein both ends of the shaft in the axial direction are supported so as not to move in a direction perpendicular to the axial direction.   A key in which the key head cover according to claim 1 is attached to a key head of the key.

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