CN111846075A - a balance car - Google Patents

Abstract

The invention discloses a balance car which comprises a first car body, a second car body and a rotating mechanism, wherein the first car body comprises a first upper shell and a first lower shell, the second car body comprises a middle shell, a second upper shell and a second lower shell, the middle shell is arranged between the second upper shell and the second lower shell, a first end of the rotating mechanism is arranged between the first upper shell and the first lower shell, and a second end of the rotating mechanism is arranged in a cylindrical part of the second lower shell. The balance car body has the advantages that the cylindrical part of the second lower shell is matched with the rotating mechanism in a rotating mode, one end of the rotating mechanism is completely wrapped in the complete cylindrical part, and the situation that the mounting groove formed by the upper shell and the lower shell together has errors, and the balance car body is insensitive to rotation is avoided.

Description

a balance car

technical field

The invention relates to the technical field of balancing vehicles, in particular to a balancing vehicle.

Background technique

The operation principle of the electric balance car is mainly based on a basic principle called "dynamic stability". It uses the gyroscope and acceleration sensor inside the car body to detect the change of the car body attitude, and uses the servo control system. The drive motor is adjusted accordingly to maintain the balance of the system. It is a new type of green and environmentally friendly product that modern people use as a means of transportation, leisure and entertainment. Electric balance cars mainly include two types: one-wheel and two-wheel. Among them, two-wheel balance cars have a higher safety factor and are more suitable for travel. One type of two-wheeled balance car is a twist car. The first car body and the second car body are connected by a rotating mechanism and move by twisting the first car body and the second car body. At this time, the installation of the rotating mechanism is very important for the balance car. The operation of the balancing vehicle is particularly important, but due to the problems of machining accuracy or installation accuracy, the rotating mechanism is easy to vibrate during rotation, which affects the normal operation of the balancing vehicle.

SUMMARY OF THE INVENTION

In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a balance car, the stability of the whole car is strong, and the rotation of the rotating mechanism is more stable.

The purpose of the present invention adopts following technical scheme to realize:

A balance car includes a first car body, a second car body and a rotating mechanism, the first car body includes a first upper shell and a first lower shell, and the second car body includes a middle shell and a second upper shell and a second lower casing, the middle casing is arranged between the second upper casing and the second lower casing, and the first end of the rotating mechanism is arranged between the first upper casing and the first lower casing Between the shells, the second end is provided in the cylindrical portion of the second lower shell.

Preferably, the first end of the rotating mechanism is fixedly disposed between the first upper casing and the first lower casing; and/or the second end of the rotating mechanism is rotatably disposed on the second in the cylindrical portion of the lower shell.

Preferably, the cylindrical portion includes a first sleeve in which the second end of the rotating mechanism is rotatable.

Preferably, a rotation mechanism fixing groove is provided on the side of the first upper casing and/or the first lower casing close to the middle casing; the second end of the rotating mechanism is fixedly arranged on the rotating mechanism fixing groove between the first upper shell and the first lower shell; or

A rotating mechanism fixing column is arranged on the side of the first upper casing and/or the first lower casing close to the middle casing; the second end of the rotating mechanism is fixedly arranged on the first upper casing through the rotating mechanism fixing column between the shell and the first lower shell.

Preferably, the first end of the rotating mechanism is rotatably disposed in the second vehicle body, and the second end is rotatably disposed in the first vehicle body; the rotating mechanism includes a rotating shaft, and one end of the rotating shaft is connected to the The first vehicle body is connected, and the other end is connected to the second vehicle body; the rotating shaft rotates relative to the first vehicle body and the second vehicle body; A limiting mechanism is provided at the position of the body or the second body and the position corresponding to the limiting portion;

The first upper shell or the first lower shell is provided with a second sleeve, the cylindrical portion of the second lower shell includes a first sleeve, and the first end of the rotating shaft is rotatably arranged on the second sleeve, The second end is rotatably disposed in the first sleeve.

Preferably, a limiting mechanism is provided on the middle shell or the second lower shell;

The limit mechanism includes a limit block and a limit block installation groove, the limit block installation groove is located on the middle shell or the second lower shell, and the limit block is located in the limit block installation groove Among them, the limit block is adapted to the limit part on the rotating shaft to limit the rotation angle of the rotating shaft.

Preferably, the limiting portion is exposed on the cylindrical portion and is adapted to the limiting block; the limiting block mounting groove is located on the outer side of the cylindrical portion facing the wheel.

Preferably, the rotating mechanism includes a rotating shaft, and the cylindrical portion is adapted to one end of the rotating shaft; the middle shell is provided with a cylindrical portion mounting groove corresponding to the cylindrical portion; the second The upper shell is provided with a cover portion corresponding to the installation groove of the cylindrical portion.

Preferably, a limit sleeve is sleeved on the rotating shaft, the limit sleeve is located on one side or both sides of the cylindrical portion, and abuts against the side wall of the cylindrical portion; the cylindrical portion is installed in the groove There is a limit sleeve groove for accommodating the limit sleeve;

The rotating shaft is rotatably fitted with the cylindrical portion, or the rotating shaft is rotatably connected to the cylindrical portion through a third sleeve or a bearing.

Preferably, the second vehicle body further includes an indicator light plate; an indicator light plate mounting post is arranged in the cylindrical portion mounting groove, and the indicator light plate is disposed in the cylindrical portion mounting groove through the indicator light plate mounting post Inside;

The second vehicle body further includes an indicator light; a first indicator light hole is provided in the installation groove of the cylindrical portion, and a second indicator light hole is provided in the position corresponding to the first indicator light hole on the covering portion, and the indicator light The light of the lamp can pass through the first indicator hole and the second indicator hole;

The second vehicle body further includes an indicator light cover, and the indicator light cover is arranged on the second indicator light hole.

Preferably, the second vehicle body includes a second axle, the second lower shell is provided with a second axle mounting seat, and the second axle mounting seat includes a second axle pressing piece fixing hole and a second axle mounting groove .

Compared with the prior art, the beneficial effects of the present invention are:

In the present invention, the cylindrical part of the second lower shell is rotated and matched with the rotating mechanism, so that one end of the rotating mechanism is completely wrapped in the complete cylindrical part, so that the rotating mechanism is connected with the cylindrical part in rotation, so as to prevent the existence of the split installation groove. Production or assembly errors cause the body of the balance car to rotate insensitively, affect the operation of the balance car, and make the rotation of the rotating mechanism more stable.

Description of drawings

1 is a schematic diagram of an explosion structure of a balance car according to an embodiment of the present invention;

2 is a schematic cross-sectional structure diagram of a self-balancing vehicle according to an embodiment of the present invention;

3 is a schematic structural diagram of a second lower casing according to an embodiment of the present invention;

4 is a schematic structural diagram of a middle shell according to an embodiment of the present invention;

5 is a schematic structural diagram of another angle of the middle shell according to the embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a second upper casing according to an embodiment of the present invention.

In the figure: 1. The first vehicle body; 2. The second vehicle body; 3. The rotating mechanism; 31. The first end; 32. The second end; 33. The rotating shaft; ; 36, limit sleeve; 37, limit block; 38, limit block installation slot; 10, first upper shell; 101, rotation mechanism fixing slot; 102, rotation mechanism fixing column; 20, first lower shell; 30 301, cover part; 302, second indicator hole; 303, lampshade; 40, second lower shell; 401, cylindrical part; 50, middle shell; 501, installation groove on cylindrical part; 502, the installation column of the indicator light board; 503, the indicator light board; 504, the first indicator light hole.

Detailed ways

The present invention will be described in more detail below with reference to the accompanying drawings. It should be noted that the following description of the present invention with reference to the accompanying drawings is only illustrative and not restrictive. The various embodiments may be combined with each other to form other embodiments not shown in the following description.

In the description of the present invention, it should be noted that for orientation words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "upper", "lower" , "Front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise" ” etc. indicating the orientation and positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or a specific orientation. The structure and operation should not be construed as limiting the specific protection scope of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or indicating the number of technical features. Thus, the definition of "first" and "second" features may expressly or implicitly include one or more of the features, and in the description of the present invention, "several" means two or more, unless otherwise There are clear and specific restrictions.

In the present invention, unless otherwise expressly specified and limited, the terms "assembled", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated It can be connected to the ground; it can also be a mechanical connection; it can be directly connected, or it can be connected through an intermediate medium, or the two components can be connected internally. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Referring to FIG. 1 to FIG. 6 , the balance car of the embodiment of the present invention will be clarified in the following description, wherein the second end of the rotating mechanism is arranged in the cylindrical portion 401 of the second lower shell to rotate The mechanism can be rotated in the cylindrical portion 401 , and the complete cylindrical portion 401 makes the rotation of the rotating mechanism more stable, and the first body and the second body work well.

As shown in FIG. 1 to FIG. 6 , a balance car includes a first vehicle body 1 , a second vehicle body 2 and a rotating mechanism 3 , the first vehicle body 1 includes a first upper shell 10 and a first lower body The shell 20, the second body 2 includes a middle shell 50, a second upper shell 30 and a second lower shell 40, and the middle shell 50 is disposed between the second upper shell 30 and the second lower shell 40 During this time, the first end 31 of the rotating mechanism 3 is disposed between the first upper case 10 and the first lower case 20 , and the second end 32 is disposed in the cylindrical portion 401 of the second lower case 40 middle.

More specifically, as shown in FIG. 1 and FIG. 2 , in one embodiment, the second end 32 of the rotating mechanism 3 is rotatably arranged in the second vehicle body 2 , and the first end 31 is fixedly arranged in the first vehicle body 2 . In the body 1, the first end 31 of the rotating mechanism 3 is fixedly arranged between the first upper casing 10 and the first lower casing 20, the second end 32 of the rotating mechanism 3 is rotatably arranged in the second lower casing 40, The two lower shells 40 are provided with cylindrical portions 401 at corresponding positions, and the rotating mechanism 3 can rotate in the cylindrical portions 401 . More specifically, the cylindrical portion 401 is a first sleeve, which is a complete hollow cylindrical structure, and is adapted to the rotating mechanism 3. The rotating part can rotate relative to the second vehicle body 2 in the first sleeve, and the complete The hollow cylindrical structure can make the rotating parts more stable during rotation and avoid shaking. Compared with other embodiments, the installation groove of the second end 32 of the rotating mechanism 3 is jointly formed by the upper shell and the lower shell. If there is an error in the production or installation process, the installation groove formed by the upper shell and the lower shell may be dislocated or dislocated. If there is no correspondence and the inner wall is not smooth, the rotating parts will shake during the rotation process, so that the balance car cannot run stably. Therefore, the above problem can be solved by rotatably disposing one end of the rotating member in the first sleeve, and the stable operation of the balance car can be ensured. Of course, the cylindrical portion 401 may also be disposed at a position corresponding to the second upper casing 30 and the rotating mechanism 3 , and other structures are consistent with this embodiment.

The middle shell 50 is provided with a mounting groove 501 on the cylindrical portion corresponding to the first sleeve, and the second upper shell 30 is provided with a covering portion 301 corresponding to the mounting groove 501 on the cylindrical portion. The outer side of the installation groove 501 on the cylindrical part, after the middle case 50 is fixed with the second upper case 30 and/or the second lower case 40, the first sleeve is fixed in the installation groove 501 on the cylindrical part, and one end of the rotating shaft 33 passes through The first sleeve can be rotated in the first sleeve; the rotating shaft 33 is sleeved with a limit sleeve 36, and the limit sleeve 36 is located on one side or both sides of the first sleeve and abuts against the side wall of the first sleeve , for restricting the movement of the rotating shaft 33 in the first sleeve, and restricting one end of the rotating shaft 33 in the first sleeve. The limit sleeve 36 is a clamp, which is clamped on both sides of the first sleeve; since the clamp protrudes from the rotating shaft 33, the installation groove 501 on the cylindrical portion is provided with a limit sleeve groove for accommodating the limit sleeve 36 to avoid the rotating shaft 33 interferes and collides with the second lower shell 40 during the rotation process, and the limiting sleeve groove can also be used to locate the position of the clamp to avoid displacement of the clamp.

In order to prevent the first vehicle body 1 and the second vehicle body 2 from running out of control during relative rotation, the relative rotation angle of the first vehicle body 1 and the second vehicle body 2 needs to be limited. A limiting mechanism is provided on 40 , the rotating mechanism 3 includes a rotating shaft 33 and a limiting mechanism, and the limiting mechanism is adapted to the limiting portion 34 on the rotating shaft 33 to limit the rotation angle of the rotating shaft 33 . The first vehicle body 1 and the second vehicle body 2 rotate around the axis of the rotating shaft 33 . The limit mechanism includes a limit block 37 and a limit block installation groove 38. The limit block installation groove 38 can be set on the second lower shell 40, or on the middle shell 50, or the second lower shell 40 and the middle shell. 50 are provided with limit block installation grooves 38 . The limiting block mounting groove 38 is provided on the second lower shell 40 . One end of the rotating shaft 33 between the middle shell 50 and the second lower shell 40 is provided with a limit portion 34 , the limit portion 34 includes a limit boss with a notch, and the limit block 37 is a limit corresponding to the limit boss. When the rotating shaft 33 rotates, the top surface of the limiting piece can collide with the two ends of the limiting boss respectively, so as to limit the rotation angle of the rotating shaft 33 .

The first car body 1 and the second car body 2 are connected by the rotating mechanism 3, and in order to facilitate the user to observe the working condition of the balance car, the balance car also includes an indicator light board 503, and the indicator light board 503 is connected to the control circuit board, and can be passed through it. The light-emitting device on it feeds back the working status of the balance car. In order to keep the pedaling balance of the balance car, the first car body 1 and the second car body 2 are provided with pedals for users to step on. At the connection point of the second vehicle body 2 , that is, the position corresponding to the rotating mechanism 3 , the indicator light plate 503 is disposed below the relative position of the middle shell 50 and the rotating shaft 33 , more specifically, in the installation groove 501 on the cylindrical portion. The installation groove 501 on the cylindrical portion is provided with an indicator light board mounting post 502 and a first indicator light hole 504. The second upper shell 30 is provided with a second indicator light hole 302 at the position corresponding to the first indicator light hole 504. The board mounting post 502 is used to install the indicator light board 503. The first indicator light hole 504 and the second indicator light hole 302 are used to transmit light from the light-emitting devices on the indicator light board 503. The first indicator light hole 504 and the second indicator light hole The position of 302 corresponds to the light emitting device on the indicator board 503 . The light-emitting device can be LED lamp beads or other small lamps. A lamp cover 303 is provided on the second indicator hole 302 .

One end of the first upper shell 10 close to the second upper shell 30 is provided with a rotating mechanism fixing groove 101 , correspondingly, the end of the first lower shell 20 close to the second lower shell 40 is provided with a rotating mechanism fixing groove 101 , and the rotating mechanism 3 is fixed on the rotating mechanism Between the fixing groove 101 and the rotating mechanism fixing groove 101, the rotating mechanism fixing groove 101 and the rotating mechanism fixing groove 101 are formed to be fixed with the first end 31 of the rotating mechanism 3 after the first upper shell 10 and the first lower shell 20 are connected and fixed. The connected fixing groove can limit the relative rotation of the first end 31 of the rotating mechanism 3 and the first vehicle body 1 , so that the first vehicle body 1 and the second vehicle body 2 can smoothly rotate relative to each other. The connection structure between the first end 31 of the rotating mechanism 3 and the first upper casing 10 and the first lower casing 20 can also be as follows: the end of the first upper casing 10 close to the second upper casing 30 is provided with a rotating mechanism fixing column 102, and the rotating mechanism 3 A rotating mechanism fixing hole 35 is provided on the first end 31 of the rotating mechanism, the rotating mechanism fixing column 102 is adapted to the shape of the rotating mechanism fixing hole 35, and the rotating mechanism 3 is fixed on the first upper shell 10 and the first upper casing 10 through the rotating mechanism fixing column 102. Between the lower shells 20, during installation, the rotating mechanism fixing column 102 passes through the rotating mechanism fixing hole 35, so that the first end 31 of the rotating mechanism 3 is fixedly connected with the first vehicle body 1, and is relatively stationary, so that the first vehicle body is 1 and the second vehicle body 2 can smoothly rotate relative to each other; the fixing hole 35 of the rotating mechanism can be a through structure or a non-through structure. When the rotating mechanism fixing hole 35 is a through structure, the first upper shell 10 and the first lower shell 20 can be provided with rotating mechanism fixing columns 102; when the rotating mechanism fixing holes 35 are non-penetrating structures, the corresponding positions of the first upper shell 10 or the first lower shell 20 are provided with rotating mechanism fixing columns 102, and the rotating mechanism The fixing column 102 is disposed toward the fixing hole 35 of the rotating mechanism so that it can be inserted into the fixing hole 35 of the rotating mechanism.

In another embodiment, the first end 31 of the rotating mechanism 3 is rotatably disposed in the first vehicle body 1, and the second end 32 is rotatably disposed in the second vehicle body 2; the rotating mechanism 3 includes a rotating shaft 33, One end of the rotating shaft 33 is connected to the first vehicle body 1, and the other end is connected to the second vehicle body 2; the rotating shaft 33 rotates relative to the first vehicle body 1 and the second vehicle body 2; A limiting mechanism is provided at the position of the first vehicle body 1 or the second vehicle body 2 corresponding to the limiting portion 34 .

Based on the above embodiment, for the installation of the first end 31 of the rotating mechanism 3, preferably, in an embodiment, the first end 31 of the rotating shaft 33 is located between the middle shell 50 and the second lower shell 40, and the first upper shell 10 is provided with a rotating upper connecting groove, a rotating lower connecting groove is set at the position corresponding to the rotating upper connecting groove on the first lower shell 20, a bearing is sleeved on the first end 31 of the rotating shaft 33, the rotating upper connecting groove and the rotating lower connecting groove are Corresponding bearing installation grooves are provided thereon, and the bearings are connected with the first vehicle body 1 and the second vehicle body 2 in rotation, and the rotation is restricted by the limiter.

In another embodiment, the first upper shell 10 or the first lower shell 20 is provided with a second sleeve, the cylindrical portion of the middle shell 50 includes a first sleeve, and the first end 31 of the rotating shaft 33 is rotatably disposed on the first sleeve. Two sleeves, the second end 32 is rotatably arranged in the first sleeve, in order to prevent the rotating shaft 33 from being separated from the first sleeve and the second sleeve, the connection between the rotating shaft 33 and the first sleeve and the second sleeve is sleeved There are circlips or washers. A lubricating layer is provided between the contact surfaces of the rotating shaft 33 and the first sleeve and the second sleeve, so that the rotating shaft 33 and the first sleeve and the second sleeve rotate more smoothly. The lubricating layer can be lubricating oil or other common lubricating materials.

Preferably, the second vehicle body includes a second axle, the second lower shell is provided with a second axle mounting seat, and the second axle mounting seat includes a second axle pressing plate fixing hole and a second axle mounting groove; the second axle mounting groove Matching with the second axle, the second axle is placed in the second axle mounting groove, the second axle pressing sheet fixing holes include two groups, and the two sets of second axle pressing sheet fixing holes are symmetrically arranged on both sides of the second axle mounting groove . The second axle mounting seat is also provided with a second axle pressing piece, and the second axle is fixed in the second axle mounting groove through the second axle pressing piece; the second axle pressing piece is fixedly connected with the second axle mounting seat through screws to ensure The second axle does not come out of the second axle mounting slot. Connecting the second axle and the second end of the rotating mechanism to the same structure can make the rotating mechanism and the second wheel rotate more smoothly. The second lower case is connected, and the second end of the rotating mechanism is rotatably arranged in the cylindrical portion of the second lower case.

The above-mentioned embodiments are only preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention belong to the scope of the present invention. Scope of protection claimed.

Claims (11)

1. A balance car, comprising a first vehicle body, a second vehicle body and a rotating mechanism, wherein the first vehicle body includes a first upper shell and a first lower shell, and the second vehicle body includes a middle a shell, a second upper shell and a second lower shell, the middle shell is arranged between the second upper shell and the second lower shell, and the first end of the rotating mechanism is arranged on the first upper shell Between the first lower case and the first lower case, the second end is provided in the cylindrical portion of the second lower case. 2. The balance car according to claim 1, wherein: the first end of the rotating mechanism is fixedly arranged between the first upper shell and the first lower shell; and/or the rotating mechanism The second end of the is rotatably disposed in the cylindrical portion of the second lower case. 3 . The balance car according to claim 1 or 2 , wherein the cylindrical portion comprises a first sleeve, and the second end of the rotating mechanism can rotate in the first sleeve. 4 . 4. The balance car according to claim 2, characterized in that: a side of the first upper shell and/or the first lower shell close to the middle shell is provided with a rotating mechanism fixing groove; The end is fixedly arranged between the first upper shell and the first lower shell through the rotation mechanism fixing groove; or A rotating mechanism fixing column is arranged on the side of the first upper casing and/or the first lower casing close to the middle casing; the second end of the rotating mechanism is fixedly arranged on the first upper casing through the rotating mechanism fixing column between the shell and the first lower shell. 5. The balance car according to claim 1, wherein the first end of the rotating mechanism is rotatably arranged in the second vehicle body, and the second end is rotatably arranged in the first vehicle body; The rotating mechanism includes a rotating shaft, one end of the rotating shaft is connected with the first vehicle body, and the other end is connected with the second vehicle body; the rotating shaft rotates relative to the first vehicle body and the second vehicle body; the One end of the rotating shaft is provided with a limiting portion, and a limiting mechanism is provided at the position corresponding to the first vehicle body or the second vehicle body and the limiting portion; The first upper shell or the first lower shell is provided with a second sleeve, the cylindrical portion of the second lower shell includes a first sleeve, and the first end of the rotating shaft is rotatably arranged on the second sleeve, The second end is rotatably disposed in the first sleeve. 6. The balance car according to claim 1, characterized in that: a limit mechanism is arranged on the middle shell or the second lower shell; The limit mechanism includes a limit block and a limit block installation groove, the limit block installation groove is located on the middle shell or the second lower shell, and the limit block is located in the limit block installation groove Among them, the limit block is adapted to the limit part on the rotating shaft to limit the rotation angle of the rotating shaft. 7 . The balance car according to claim 6 , wherein the limiting portion is exposed on the cylindrical portion and is adapted to the limiting block; the limiting block mounting groove is located in the cylindrical portion. 8 . The shape part faces the outside of the wheel. 8 . The balance car according to claim 1 , wherein the rotating mechanism comprises a rotating shaft, and the cylindrical portion is adapted to one end of the rotating shaft; The second upper shell is provided with a covering portion corresponding to the cylindrical portion mounting groove. 9 . The balance car according to claim 8 , wherein a limit sleeve is sleeved on the rotating shaft, and the limit sleeve is located on one side or both sides of the cylindrical part, and is connected with the cylindrical part. 10 . The side walls of the cylindrical part are in contact with each other; the installation groove of the cylindrical part is provided with a limit sleeve groove for accommodating the limit sleeve; The rotating shaft is rotatably fitted with the cylindrical portion, or the rotating shaft is rotatably connected to the cylindrical portion through a third sleeve or a bearing. 10 . The balance vehicle according to claim 8 , further comprising an indicator light plate; an indicator light plate mounting post is arranged in the installation groove of the cylindrical portion, and the indicator light plate passes through the indicator light plate mounting post. 11 . is arranged in the installation groove of the cylindrical portion; It also includes an indicator light; a first indicator light hole is arranged in the installation groove of the cylindrical part, and a second indicator light hole is arranged in the position corresponding to the first indicator light hole on the cover part, and the light of the indicator light can be through the first indicator hole and the second indicator hole; It also includes an indicator light cover, and the indicator light cover is arranged on the second indicator light hole. 11 . The balance car of claim 1 , wherein the second vehicle body comprises a second axle, the second lower shell is provided with a second axle mounting seat, and the second axle mounting seat comprises: 11 . The second axle pressing piece fixing hole and the second axle mounting groove.

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