CN222464778U - An open-ear headset - Google Patents

Abstract

The utility model discloses an open-type earphone with hanging ears, which comprises: two earphones, each of which is provided with a sound-emitting part and a connecting component; a connecting wire, each end of which is connected to the two earphones; when the connecting components of the two earphones are adapted and connected, the open-type earphone with hanging ears can be stored in a bracelet state for wearing on the wrist; when the two earphones are separated from each other, the two earphones can be worn on both sides of the wearer's ears, so that the sound-emitting part faces the external auditory canal of the wearer. In the utility model, the open-type earphone with hanging ears has a dual form of a bracelet and an earphone. When in a coiled state, it can be worn on the wrist as a bracelet, which is convenient to carry; when the two earphones are in a separated state, they can be worn on the ears. The wearing mode of the earphone is open-type, which is not plugged into the ear canal, and has good wearing comfort.

Description

Ear hanging open earphone

Technical Field

The utility model relates to the technical field of electronic equipment, in particular to an open earphone with a hanging ear.

Background

Along with the progress and development of science and technology, the bracelet and the earphone become indispensable intelligent wearing equipment in people's life, need carry two equipment when going out, and are troublesome. The patent document with the prior art publication number of CN207010923U provides an intelligent bracelet Bluetooth headset, which comprises a main body, wherein the main body comprises a main body shell, a control circuit board, a power module and a Bluetooth module, wherein the control circuit board, the power module and the Bluetooth module are arranged in the main body shell and are electrically connected with each other, elastic support bars are embedded in the main body shell, earphone plugs are respectively arranged at two ends of the main body, the elastic support bars are memory titanium alloy bars, the natural state is in a circular ring shape, the intelligent bracelet Bluetooth headset can be worn on a wrist, when the two ends of the intelligent bracelet Bluetooth headset are pulled open, the earmuffs are rotated to 90 degrees to form a headset or a rear-hanging type exercise Bluetooth headset to be worn, and the headset earmuffs are foldable and can be rotated to be hidden in the bracelet to be convenient for storage. However, in the prior art, the in-ear earphone is uncomfortable to wear for a long time, and the use experience of a user is affected.

Therefore, there is a need to design an open ear earphone to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to solve the technical problems, and provides an open ear-hanging earphone which is provided with a wrist strap and an earphone, can be worn on the wrist as the wrist strap when in a winding state, is convenient to carry, can be worn on ears when in a separation state, is open in ear hanging mode, does not plug into an auditory canal, and is good in wearing comfort.

In order to achieve the above object, the present utility model provides an ear-hanging open earphone comprising:

the two earphones are respectively provided with a sound generating part and a connecting component;

The two ends of the connecting wire are respectively connected with the two earphones;

When the connecting components of the two earphones are connected in an adapting mode, the open-type earphone of the hanging lug can be stored in a bracelet state and is used for being worn on the wrist;

When the two earphones are separated from each other, the two earphones can be worn on two ears of a wearer respectively, so that the sound producing part faces to the outer auricle of the wearer.

In some embodiments, the earphone comprises an earphone body, and two ends of the connecting wire are respectively connected with the two earphone bodies;

The connecting wire comprises a first inner core and a first wire sleeve which is coated outside the first inner core, and the first inner core is made of memory metal wires, so that two ends of the connecting wire can be bent to form an ear hanging part with the same shape as the outline of the outer ear.

In some embodiments, the length of the connecting line is 200mm-400mm;

the diameter of the first inner core is 0.6mm-0.8mm.

In some embodiments, the earphone comprises an earphone body and an ear-hanging part, one end of the ear-hanging part is connected with the earphone body, and the other end of the ear-hanging part is detachably connected with the connecting wire.

In some embodiments, the connecting wire comprises a first inner core and a first wire sleeve coated outside the first inner core, wherein the first inner core is a memory metal wire, or the connecting wire is a flexible rope;

The ear hook comprises a second inner core and a second wire sleeve which is wrapped outside the second inner core, wherein the second inner core is made of memory metal wires and can be bent to form a structure identical to the shape of the external auditory profile.

In some embodiments, the ear hook portion includes a second inner core and a second wire sleeve wrapped outside the second inner core, the second inner core is bent to form a structure identical to the external auditory profile shape, and the connecting wire is a flexible rope.

In some embodiments, the earphone body is rotatably connected to the ear-hook portion, such that a wearing angle of the earphone body is adjustable.

In some embodiments, the system further comprises an expansion component;

the expansion assembly is fixed on the connecting wire, a wire is arranged in the connecting wire, and the expansion assembly is electrically connected with the two earphones through the wire respectively;

The expansion assembly is provided with a charging port, and the charging port is used for charging the expansion assembly.

In some embodiments, a plug is arranged at one end of the ear-hanging part far away from the earphone body, a wire is arranged in the ear-hanging part, and the plug is electrically connected with the earphone body through the wire;

The two ends of the connecting wire are respectively provided with an interface, and the expansion assembly is respectively and electrically connected with the two interfaces through wires;

the plug is detachably connected with the corresponding interface.

In some embodiments, the plug is of a cylindrical structure, a round hole is formed in the center of the end portion of the plug, a positive electrode of a wire connected with the earphone body is arranged in the round hole, a negative electrode of the wire connected with the earphone body is arranged on the cylindrical surface of the plug, the plug is adaptively inserted in the interface, and a positive electrode and a negative electrode of the wire connected with the expansion assembly are arranged at corresponding positions in the interface.

In some embodiments, the expansion component comprises:

The charging equipment is used for supplying power to the earphone;

And/or the storage device is connected with the earphone and can play information in the storage device.

In some embodiments, the earphone includes a housing, and a main board, a battery and a speaker disposed in the housing, the main board is electrically connected to the battery and the speaker, respectively, the connecting wire is connected to one end of the housing, and the speaker is disposed toward the sounding portion.

In some embodiments, the connection assemblies on the two earphones are arranged at one end of the shell away from the connecting wire;

Or, the connecting component on one earphone is arranged at the bottom position of the shell, and the connecting component on the other earphone is arranged at the top position of the shell.

In some embodiments, the connection assembly is a magnetic attraction structure, a snap-fit structure, or a chute structure.

Compared with the prior art, the open earphone with the hanging lugs has the following beneficial effects:

1. The open earphone with the hanging ear provided by the utility model has the double forms of the wrist ring and the earphone, can be worn on the wrist part as the wrist ring when in a winding state, is convenient to carry, can be worn on the ear when in a separation state, has the wearing mode of the open earphone without being plugged into an auditory canal, and has good wearing comfort;

2. The open-type earphone with the hanging ear provided by the utility model can provide expansion endurance or other functional experiences for the earphone through arranging the expansion assembly on the connecting wire, can effectively lighten the weight of an earphone body and improve the user experience, is connected with two earphones when a user needs long endurance or uses the earphone in a sports state, can supply power to the earphone to expand endurance and ensure that the earphone is worn stably to meet sports scenes, can be separated from the connecting wire when the user uses the earphone regularly, can be independently worn as the hanging earphone, can be connected with the connecting wire when the user does not need to use the earphone, is wound and is worn on a wrist, and improves the portability of the product.

Drawings

The above features, technical features, advantages and implementation of the present utility model will be further described in the following description of preferred embodiments with reference to the accompanying drawings in a clear and easily understood manner.

Fig. 1 is a schematic structural view of an open ear headphone according to a preferred embodiment of the present utility model;

Fig. 2 is a schematic structural view of an open ear headphone according to another preferred embodiment of the present utility model;

FIG. 3 is a schematic view showing the structure of the open ear phone in the unfolded state according to the preferred embodiment of the present utility model;

FIG. 4 is a schematic view of the structure of the connecting wire according to the preferred embodiment of the present utility model;

Fig. 5 is a schematic structural view of a preferred embodiment earphone of the present utility model;

fig. 6 is an exploded view of the earphone body according to the preferred embodiment of the present utility model;

FIG. 7 is a schematic view showing the structure of the open ear headphone neck hanging wearing state according to the preferred embodiment of the present utility model;

Fig. 8 is a schematic structural view of the hanging-on-wearing state of the hanging-on open earphone according to the preferred embodiment of the present utility model.

Reference numerals illustrate:

Earphone 1, earphone body 11, casing 111, drain pan 1111, upper shell 1112, mainboard 112, battery 113, loudspeaker 114, magnet 115, ear-hanging portion 12, plug 121, round hole 1211, connecting wire 2, interface 21, expansion assembly 3, charging port 31, ear 4.

Detailed Description

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following description will explain the specific embodiments of the present utility model with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the utility model, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.

For simplicity of the drawing, only the parts relevant to the utility model are schematically shown in each drawing, and they do not represent the actual structure thereof as a product. Additionally, in order to simplify the drawing for ease of understanding, components having the same structure or function in some of the drawings are shown schematically with only one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one" case.

It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

In this context, unless explicitly stated or limited otherwise, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may, for example, be fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or communicate between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, in the description of the present application, the terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

In one embodiment, referring to fig. 1 of the specification, the utility model provides an open-ear earphone, which comprises two earphones 1 and a connecting wire 2, wherein the two earphones 1 are respectively provided with a sound generating part and a connecting component, two ends of the connecting wire 2 are respectively connected with the two earphones 1, when the connecting components of the two earphones 1 are in fit connection, the open-ear earphone can be stored in a bracelet state and is used for being worn on a wrist, and when the two earphones 1 are separated from each other, the two earphones 1 can be respectively worn on two ears of a wearer, so that the sound generating part faces to an outer auricle of the wearer.

In the embodiment, the earphone has the double forms of the wrist ring and the earphone, can be worn on the wrist part as the wrist ring when in a winding state, is convenient to carry, can be worn on the ear when in a separating state, adopts a sound producing structure without entering the ear for the earphone 1, can avoid the condition that the user ignores external sounds and accidents happen due to the fact that the sound producing part stretches into the ear of the user too deeply, can avoid the ear damage caused by the fact that the user wears the earphone 1 for a long time, and has good wearing comfort, and the earphone 1 is not plugged into the auditory canal.

In one embodiment, referring to fig. 2 of the specification, the headset 1 includes headset bodies 11, and two ends of the connection wire 2 are connected to the two headset bodies 11, respectively. The connecting wire 2 comprises a first inner core and a first wire sleeve which is coated outside the first inner core, so that two ends of the connecting wire 2 can be bent to form an ear hanging part with the same shape as the outline of the outer ear. The first core is a memory wire, such as a memory wire, a memory titanium wire, etc. The first wire sleeve is a flexible wire sleeve, such as a rubber sleeve, a silica gel sleeve, and the like. The connecting wire 2 made of the shape memory material can keep the original shape after being bent and twisted, so that the ear-hanging part can be stably worn on the ear of a user, and the problem that the earphone 1 falls off from the ear of the user due to severe movement of the user is avoided.

Specifically, the ear-hanging open earphone is in an elliptic-like structure in a winding state, and conforms to the shape of a wrist, for example, the size is 65 x 54mm. The connecting wire 2 has the straightening length of 200-400mm, accords with the head size, has the wire diameter of 0.6-0.8mm, is difficult to wear when being too thick, has small holding power and is easy to fall off when being worn too thin.

Further, referring to fig. 2 and 7 of the specification, the ear-hanging open earphone further comprises an expansion assembly 3, wherein the expansion assembly 3 is fixed on the connecting wire 2, wires are arranged in the connecting wire 2, and the expansion assembly 3 is electrically connected with the two earphones 1 through the wires respectively. The expansion assembly 3 is arranged on the connecting wire 2, so that expansion endurance or other functional experience can be provided for the earphone 1, the weight of the earphone body 11 can be effectively reduced, the user experience is improved, the open-type earphone with the hanging ear is used as a neck-hanging earphone, the earphone 1 is firmly worn to meet a sport scene, and when the earphone is not required to be used, the open-type earphone with the hanging ear can be wound and then worn on a wrist, and the portability of a product is improved.

In one embodiment, referring to fig. 3 to 8 of the drawings, the earphone 1 includes an earphone body 11 and an ear-hanging portion 12, one end of the ear-hanging portion 12 is connected to the earphone body 11, and the other end of the ear-hanging portion 12 is detachably connected to the connection line 2. The earphone 1 and the connecting wire 2 are detachably connected, so that the earphone 1 can be independently worn as a hanging earphone after the earphone 1 and the connecting wire 2 are separated, wearing comfort is improved, when the earphone is not needed to be used, the earphone 1 and the connecting wire 2 can be connected, and the earphone is worn on a wrist after being wound, so that portability of a product is improved.

In one embodiment, the connecting wire 2 includes a first core and a first wire sleeve wrapped outside the first core, where the first core is a memory wire, and the memory wire may be a memory wire, a memory titanium wire, or the like. The first wire sleeve is a flexible wire sleeve, such as a rubber sleeve, a silica gel sleeve, and the like. Or the connection line 2 is a flexible rope. The ear hook 12 includes a second core, which is a memory wire and is wrapped around the second core, and can be bent to form a structure similar to the shape of the external auditory profile. The memory wire may be a memory steel wire, a memory titanium wire, or the like. The second wire sleeve is a flexible wire sleeve, for example, the flexible wire sleeve can be a rubber sleeve, a silica gel sleeve and the like.

In this embodiment, the ear-hanging portion 12 is made of a shape memory material, and after being bent and twisted, can be configured to have a shape matching with the ear of the user, so that the ear-hanging portion 12 of the headset 1 can be kept stable between the ear 4 and the wearer.

In another embodiment, referring to fig. 3 to 8 of the specification, the ear-hanging portion 12 includes a second inner core and a second wire sleeve wrapped outside the second inner core, where the second inner core is of a hard structure, for example, the second inner core is of a hard plastic, an iron wire, or the like, and the second inner core is bent to form a structure with the same shape as the outline of the outer ear. The connecting wire 2 is a flexible rope and is made of a flexible material, and the flexible material enables the neck hanging part of the ear hanging open type earphone to be lighter and smaller, so that adverse experience to a user caused by too heavy neck hanging part is reduced.

Further, the earphone body 11 is rotatably connected with the ear-hanging portion 12, so that the wearing angle of the earphone body 11 is adjustable. The earphone body 11 is connected with the ear hanging part 12 through a rotating shaft, so that the wearing angle can be adjusted when the earphone is worn, and the earphone is suitable for different ear type crowds. The earphone body 11 and the ear-hanging part 12 are preferably connected through a damping rotating shaft, so that the earphone body 11 and the ear-hanging part 12 can be rotated and stopped at any angle, and the user experience is improved.

Further, the open earphone with the hanging lugs further comprises an expansion assembly 3, the expansion assembly 3 is fixed on the connecting wire 2, wires are arranged in the connecting wire 2, and the expansion assembly 3 is electrically connected with the two earphones 1 through the wires respectively. The expansion assembly 3 is provided with a charging port 31, the charging port 31 is used for charging the expansion assembly 3, and the charging port 31 can be set as a USB interface.

Further, the expansion assembly 3 comprises a charging device and a storage device, wherein the charging device is used for supplying power to the earphone 1, can provide expansion endurance for the earphone 1, can effectively lighten the weight of an earphone body and improves user experience. The earphone 1 is connected with the storage device and can play information in the storage device, so that the earphone is used as a common Bluetooth earphone when the earphone is not connected with the expansion assembly 3, and songs, novels and other contents stored in the expansion assembly 3 can be played after the earphone is connected with the expansion assembly 3.

In one embodiment, referring to fig. 4 and 5 of the specification, a plug 121 is disposed at an end of the ear-hanging portion 12 away from the earphone body 11, and a wire is disposed in the ear-hanging portion 12, and the plug 121 is electrically connected to the earphone body 11 through the wire. The two ends of the connecting wire 2 are respectively provided with an interface 21, the expansion assembly 3 is respectively and electrically connected with the two interfaces 21 through wires, and the plug 121 is detachably connected with the corresponding interfaces 21.

Specifically, the plug 121 is in a cylindrical structure, a round hole 1211 is formed in the center of the end of the plug 121, the positive electrode of the wire connected with the earphone body 1 is arranged in the round hole 1211, the negative electrode of the wire connected with the earphone body 1 is arranged on the cylindrical surface of the plug 121, the plug 121 is adaptively inserted into the interface 21, and the positive electrode and the negative electrode of the wire connected with the expansion assembly 3 are arranged at corresponding positions in the interface 21. The expansion assembly 3 can supply power to the earphone 1 after being connected with the earphone 1, the charging pin of the earphone 1 is arranged at the tail end of the ear-hanging part 12, the positive electrode is arranged in the center of the round hole 1211, and the negative electrode is arranged on the cylindrical surface, so that the ear-hanging part 12 can be thinned as much as possible, and wearing comfort is facilitated. The connection point of the interface 21 is correspondingly arranged at the center and the side wall of the round hole, and the ear-hanging part 12 and the connecting wire 2 can be connected in a threaded or fastening mode, so that connection reliability is ensured, and the connection is convenient to detach.

It should be noted that the electrical connection manner of the expansion assembly 3 and the earphone 1 is described corresponding to the drawings in the specification, and other connection structures, such as a USB connector structure, may be adopted in the actual use process, which is only for better illustrating the present utility model, and should not be construed as limiting the present utility model.

In one embodiment, referring to fig. 6 of the specification, the earphone body 11 includes a housing 111, and a main board 112, a battery 113 and a speaker 114 disposed in the housing 111, where the main board 112 is electrically connected to the battery 113 and the speaker 114, the connection wire 2 is connected to one end of the housing 111, the speaker 114 is disposed towards the sound generating portion, and the speaker 114 may be a sound generating hole or a sound generating port. In order to reduce uncomfortable feeling caused by the adoption of an in-ear structure of the existing bracelet earphone, the embodiment adopts a sound production structure without in-ear, and an air conduction technology or an externally-placed sound production structure can be adopted, so that ears are opened in the using process. This sound production structure of not going into ear is just to the ear through the sound production position with the earphone, and does not stretch into the ear inside, has avoided current in-ear structure to lead to the user to neglect outside sound emergence unexpected condition when the motion owing to going into the ear too dark, also can avoid because wear the earphone for a long time and cause the damage to the ear.

Further, the connection assembly on the two headphones 1 is arranged at the end of the housing 111 remote from the connection line 2. Or the connecting component on one earphone 1 is arranged at the bottom of the shell 111, the connecting component on the other earphone 1 is arranged at the top of the shell 111, and the two earphones 1 are connected and then are arranged in a lamination mode.

Specifically, the connection assembly may be provided as a magnetic attraction structure, a snap structure or a chute structure. Taking the magnetic attraction structure as an example, one magnetic attraction piece is arranged at the end part of the shell 111 of each earphone 1, and when the two earphones 1 are close to each other, the two magnetic attraction pieces are in magnetic attraction connection with each other, so that the two earphones 1 can be wound to form an annular structure after being connected, and are convenient to wear on the wrist. The two magnetic attraction pieces can be mutually different magnets, or one is a magnet and the other is a metal.

In the embodiment, when a user needs to use for a long time or in a movement state, the connecting wire 2 is connected with the two earphones 1, the earphones 1 are changed into neck hanging type or head bow type, the earphone 1 can be powered to expand the time of the long time and stably wear the earphones 1 to meet the movement scene, when the user uses the earphone regularly, the earphone 1 can be separated from the connecting wire 2, the earphone 1 is independently worn as a hanging type earphone, when the earphone does not need to use, the earphone 1 can be connected with the connecting wire 2, and the earphone is wound and worn on the wrist, so that the portability of a product is improved.

In the foregoing embodiments, the descriptions of the embodiments are focused on, and the parts of a certain embodiment that are not described or depicted in detail may be referred to in the related descriptions of other embodiments.

It should be noted that the above embodiments can be freely combined as needed. The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.

Claims (14)

1. An ear-hanging open earphone, comprising:

the two earphones are respectively provided with a sound generating part and a connecting component;

The two ends of the connecting wire are respectively connected with the two earphones;

When the connecting components of the two earphones are connected in an adapting mode, the open-type earphone of the hanging lug can be stored in a bracelet state and is used for being worn on the wrist;

When the two earphones are separated from each other, the two earphones can be worn on two ears of a wearer respectively, so that the sound producing part faces to the outer auricle of the wearer.

2. The ear-hanging open earphone of claim 1, wherein,

The earphone comprises an earphone body, and two ends of the connecting wire are respectively connected with the two earphone bodies;

The connecting wire comprises a first inner core and a first wire sleeve which is coated outside the first inner core, and the first inner core is made of memory metal wires, so that two ends of the connecting wire can be bent to form an ear hanging part with the same shape as the outline of the outer ear.

3. The ear-hanging open earphone of claim 2, wherein,

The length of the connecting line is 200mm-400mm;

the diameter of the first inner core is 0.6mm-0.8mm.

4. The ear-hanging open earphone of claim 1, wherein,

The earphone comprises an earphone body and an ear hanging part, one end of the ear hanging part is connected with the earphone body, and the other end of the ear hanging part is detachably connected with the connecting wire.

5. The ear-hanging open earphone of claim 4, wherein,

The connecting wire comprises a first inner core and a first wire sleeve coated outside the first inner core, wherein the first inner core is made of memory metal wires, or the connecting wire is a flexible rope;

The ear hook comprises a second inner core and a second wire sleeve which is wrapped outside the second inner core, wherein the second inner core is made of memory metal wires and can be bent to form a structure identical to the shape of the external auditory profile.

6. The ear-hanging open earphone of claim 4, wherein,

The ear hook comprises a second inner core and a second wire sleeve wrapped outside the second inner core, the second inner core is bent to form a structure identical to the shape of the outline of the outer ear, and the connecting wire is a flexible rope.

7. The ear-hanging open earphone of claim 6, wherein,

The earphone body is rotationally connected with the ear hanging part, so that the wearing angle of the earphone body is adjustable.

8. The open-ear headphone according to any one of claims 4-7, further comprising an expansion component;

the expansion assembly is fixed on the connecting wire, a wire is arranged in the connecting wire, and the expansion assembly is electrically connected with the two earphones through the wire respectively;

The expansion assembly is provided with a charging port, and the charging port is used for charging the expansion assembly.

9. The ear-hanging open earphone of claim 8, wherein,

A plug is arranged at one end, far away from the earphone body, of the ear-hanging part, a wire is arranged in the ear-hanging part, and the plug is electrically connected with the earphone body through the wire;

The two ends of the connecting wire are respectively provided with an interface, and the expansion assembly is respectively and electrically connected with the two interfaces through wires;

the plug is detachably connected with the corresponding interface.

10. The ear-hanging open earphone of claim 9, wherein,

The plug is of a cylindrical structure, a round hole is formed in the center of the end portion of the plug, the positive electrode of the wire connected with the earphone body is arranged in the round hole, the negative electrode of the wire connected with the earphone body is arranged on the cylindrical surface of the plug, the plug is adaptively inserted in the interface, and the positive electrode and the negative electrode of the wire connected with the expansion assembly are arranged at corresponding positions in the interface.

11. The ear mount open earphone of claim 10, wherein the expansion assembly comprises:

The charging equipment is used for supplying power to the earphone;

And/or the storage device is connected with the earphone and can play information in the storage device.

12. The ear-hanging open earphone of claim 1, wherein,

The earphone comprises a shell, a main board, a battery and a loudspeaker, wherein the main board, the battery and the loudspeaker are arranged in the shell, the main board is respectively connected with the battery and the loudspeaker, the connecting wire is connected with one end of the shell, and the loudspeaker is arranged towards the sounding part.

13. The ear-hanging open earphone of claim 12, wherein,

The connecting components on the two earphones are arranged at one end of the shell far away from the connecting wire;

Or, the connecting component on one earphone is arranged at the bottom position of the shell, and the connecting component on the other earphone is arranged at the top position of the shell.

14. The ear-hanging open earphone of claim 13, wherein,

The connecting component is of a magnetic attraction structure, a buckling structure or a sliding groove structure.