Integral rotating decoration device

Abstract

The utility model relates to a decoration device and particularly discloses an integral rotating decoration device which comprises an integral rotating base, a decoration cover and a light-emitting component, the decoration cover is arranged on the integral rotating base, the light-emitting component comprises an LED lamp and a connecting component, the connecting component is connected with the integral rotating base, the LED lamp is arranged on the connecting component, and the decorative cover is arranged on the integral rotating base. A connecting wire of the LED lamp is connected with the integral rotating base, and the integral rotating base can drive the connecting component, the LED lamp and the decorative cover to rotate synchronously. The back face of the whole cover body can be clamped into the rotating part, the whole cover body can rotate along with the rotating part, the effect that the whole cover body and the rotating part rotate together is achieved, the whole cover body is fixedly connected with the connecting component and the decorative cover, and the connecting component and the decorative cover can synchronously rotate along with the whole cover body. Light emitted by the LED lamp can be transmitted out of the decorative cover, and a dynamic light-emitting effect is generated.

Description

Technical Field

[0001] The utility model relates to a decoration device, in particular to an integral rotating decoration device. Background Art

[0002] Ornaments are widely used in daily life. To enhance their aesthetics and user experience, manufacturers often install LED lights on them. In the prior art, ornaments can be categorized as either static or moving. While all components of static ornaments are stationary, at least one component of moving ornaments is movable. Therefore, LED lights can only be installed on static components in either type of ornament.

[0003] In the prior art, it is impossible to install LED lights on the moving parts, and it is also impossible to provide users with a better experience.

[0004] To address the aforementioned technical issues, the applicant filed a utility model patent application on August 22, 2024, titled "An Integral Rotating Base," with application number 2024220438164. The utility model patent effectively addresses the aforementioned technical issues. However, in some practical applications, such as the present application's requirement to rotate the decorative cover, the aforementioned prior application fails to provide sufficient protection. Given that the applicant seeks to protect the "integral rotating decorative device," it is necessary to file an application for an integral rotating decorative device. Utility Model Content

[0005] The purpose of the utility model is to provide an integral rotating decorative device to achieve the purpose of protecting the integral rotating decorative device.

[0006] According to one aspect of the utility model, an integral rotating decorative device is provided, comprising an integral rotating base, a decorative cover and a light-emitting component, the decorative cover being arranged on the integral rotating base, the light-emitting component comprising an LED lamp and a connecting component, the connecting component being connected to the integral rotating base, the LED lamp being arranged on the connecting component, and the connecting wire of the LED lamp being connected to the integral rotating base, the integral rotating base being able to drive the connecting component, the LED lamp and the decorative cover to rotate synchronously.

[0007] In some embodiments, the integral rotating base includes a base body, a bin body, a motor, a transmission mechanism, a rotating part and an entire cover body. The entire cover body is arranged on the upper end surface of the base body, the motor and the transmission mechanism are both arranged in the bin body, the transmission mechanism is connected to the motor, and the transmission mechanism is also connected to the rotating part. The motor can drive the rotating part to rotate through the transmission mechanism. The entire cover body is connected to the rotating part, and the entire cover body can rotate together with the rotating part. An accommodating part is formed at the upper end of the rotating part, and a corresponding boss is provided on the back of the entire cover body. The boss can be inserted into the accommodating part so that the entire cover body can rotate together with the rotating part.

[0008] In some embodiments, a support plate is provided at the upper end of the base body, a through hole is provided at the middle position of the support plate, a plurality of ball bearings are provided on the support plate, and a plurality of guide posts are provided on the back of the entire cover body. The guide posts can be positioned at the edge of the through hole so that the entire cover body can rotate within the range in which the guide posts can rotate, and the back of the entire cover body contacts the ball bearings and forms a rolling connection.

[0009] In some embodiments, the integral rotating base further includes a conductive part, a part of which is provided on the rotating part. When the motor drives the rotating part and a part of the conductive part to rotate through a transmission mechanism, the other part of the conductive part can always form an electrical connection with the conductive part on the rotating part. The conductive part includes two conductive rings, two conductive elastic parts and a conductive body. The two conductive rings are provided at the lower end of the rotating part. The two conductive elastic parts are electrically connected to the conductive body. One of the conductive elastic parts is electrically connected to one of the conductive rings, and the other conductive elastic part is electrically connected to the other conductive ring. The conductive elastic part is a spring. When the conductive ring rotates following the rotating part, the conductive elastic part is always in contact with the conductive ring.

[0010] In some embodiments, the rotating part is cylindrical as a whole, the cross-section of the conductive ring is circular, the warehouse body includes an upper warehouse body and a lower warehouse body, the upper warehouse body and the lower warehouse body form a accommodating space, and the motor and the transmission mechanism are both arranged in the accommodating space.

[0011] In some embodiments, a USB power cord is also included. A controller is provided on the USB power cord. After the USB power cord is connected to the power supply, the USB power cord provides power to the motor and the LED light. The motor and the LED light are connected in parallel. The controller can control the rotation of the motor and the lighting of the LED light, or only make the LED light light up.

[0012] In some embodiments, the connecting component includes a top plate, a bottom plate and a connecting column. The connecting column is arranged between the top plate and the bottom plate. The connecting column is hollow. The LED lamp is arranged on the top plate. The LED lamp has two connecting wires. The two connecting wires pass through the connecting column and the bottom plate in turn and are electrically connected to the two conductive rings respectively.

[0013] In some embodiments, through holes are provided on the bottom plate and the entire cover body, and the bottom plate and the entire cover body are fixed together by screws.

[0014] In some embodiments, a flange is provided at the lower end of the entire cover body, and through holes are provided on the flange and the decorative cover. The decorative cover and the flange of the entire cover body are fixed together by screws.

[0015] In some embodiments, a plurality of butterfly-shaped hollow patterns are provided on the decorative cover.

[0016] The beneficial effects of the utility model are as follows: after the motor is started, the motor can drive the rotating part to rotate through the transmission mechanism. A conductive ring is provided on the rotating part, and the conductive ring can rotate with the rotating part. Since the conductive elastic part is always in contact with the conductive ring, and the conductive elastic part is electrically connected to the conductive body and the power supply, the conductive ring can always be in a energized state.

[0017] The conductive ring can be electrically connected to the LED lamp, so that the LED lamp is always powered on. The LED lamp rotates with the rotating part, which can solve the problem in the existing technology that the LED lamp cannot be installed on the rotating part, giving users a better usage experience.

[0018] In addition, the back of the entire cover body in the present invention can be inserted into the rotating part, and the entire cover body can rotate together with the rotating part, forming an effect that the entire cover body and the rotating part rotate together. The entire cover body is fixedly connected to the connecting parts and the decorative cover, and the connecting parts and the decorative cover will rotate synchronously with the entire cover body. The light emitted by the LED lamp can pass through the decorative cover to produce a dynamic lighting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of an integral rotating decoration device according to one embodiment of the present invention;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure of the integral rotating decorative device shown behind the hidden decorative cover;

[0021] Figure 3 for Figure 2 The exploded structural diagram of the integral rotating decorative device shown;

[0022] Figure 4 for Figure 1 A partial structural diagram of the overall rotating decoration device shown;

[0023] Figure 5 for Figure 1 A schematic diagram of a partial structure of the overall rotating decoration device shown in another direction;

[0024] Figure 6 for Figure 1 A schematic diagram of another part of the overall rotating decorative device shown;

[0025] Figure 7 for Figure 6 A schematic diagram of another direction is shown;

[0026] Figure 8 6 is a schematic diagram of another direction;

[0027] Figure 9 for Figure 6A schematic diagram of the enlarged structure of part A shown;

[0028] Figure 10 It is a structural diagram of the entire cover body in the integral rotating decoration device.

[0029] 1-integral rotating base; 11-base; 111-warehouse body; 1111-upper warehouse body; 1112-lower warehouse body; 112-whole cover body; 1121-convex column; 1122-guide column; 113-support plate; 1131-ball; 12-motor; 13-transmission mechanism; 131-transmission wheel set; 1311-first transmission wheel; 1312-belt; 1313-second transmission wheel; 132-gear set; 14-rotating part; 15-conductive part; 151-conductive ring; 152-conductive elastic part; 153-conductive body; 2-decorative cover; 3-light-emitting component; 31-LED lamp; 32-connecting component; 321-top plate; 322-bottom plate; 323-connecting column; 4-USB power cord; 41-controller. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] Figures 1 to 10 The structure of the integral rotating decoration device according to one embodiment of the present invention is schematically shown.

[0033] like Figures 1 to 10 As shown, an integral rotating decorative device includes an integral rotating base 1, a decorative cover 2 and a light-emitting component 3.

[0034] The decorative cover 2 can be mounted on the integral rotating base 1. The light-emitting component 3 includes an LED lamp 31 and a connecting component 32. The connecting component 32 is connected to the integral rotating base 1. The LED lamp 31 can be mounted on the connecting component 32, and the connecting wire of the LED lamp 31 is connected to the integral rotating base 1. The integral rotating base 1 can drive the connecting component 32, the LED lamp 31, and the decorative cover 2 to rotate synchronously. In this embodiment, the decorative cover 2 can be provided with a hollow butterfly. When the connecting component 32, the LED lamp 31, and the decorative cover 2 rotate synchronously, a dynamic effect can be produced.

[0035] In this embodiment, the integral rotating base 1 may include a base body 11 , a bin body 111 , a motor 12 , a transmission mechanism 13 , a rotating portion 14 and an integral cover body 112 .

[0036] like Figures 2 to 8 As shown, the entire cover 112 can be mounted on the upper end surface of the base 11, and the motor 12 and transmission mechanism 13 can both be mounted in the chamber 111. The transmission mechanism 13 is connected to the motor 12, which is also connected to the rotating portion 14. Therefore, when the motor 12 is started, the motor 12 can drive the rotating portion 14 to rotate through the transmission mechanism 13. The entire cover 112 can be connected to the rotating portion 14, and the entire cover 112 can rotate along with the rotating portion 14. Since the height and thickness of the base 11 are very small, a "whole" rotating visual effect is created.

[0037] from Figure 6 and Figure 10 As can be seen from the figure, a receiving portion 41 is integrally formed at the upper end of the rotating portion 14. The receiving portion 41 is actually as shown in FIG. Figure 6 A longitudinal through hole is shown, from Figure 10 It can be seen that a corresponding protrusion 1121 can be formed on the back of the entire cover body 112. The protrusion 1121 can be snapped into the receiving portion 41, that is, the protrusion 1121 can be completely snapped into the receiving portion 41, so that the entire cover body 112 can rotate together with the rotating portion 14. In this embodiment, the cross-section of the protrusion 1121 is a regular octagon, and accordingly, the cross-section of the receiving portion is also a regular octagon. In other embodiments, the cross-section of the protrusion 1121 can also be a regular hexagon, and accordingly, the cross-section of the receiving portion is also a regular hexagon.

[0038] like Figure 3As shown, a support plate 113 can be installed at the upper end of the base body 11, and a through hole 132 is formed at the middle position of the support plate 113. A plurality of balls 1131 can be installed on the support plate 113. Four guide columns 1122 are integrally formed on the back of the entire cover body 112. The four guide columns 1122 can be positioned at the edge of the through hole, that is, the four guide columns 1122 are located in the through hole and on the outer circle of the through hole, so that the entire cover body 112 can rotate within the range that the guide columns 1122 can rotate. The back of the entire cover body 112 contacts the balls and forms a rolling connection. By setting the balls 1131, the friction force of the entire cover body 112 during rotation can be reduced. The guide columns 1122 can guide the entire cover body 112, allowing the entire cover body 112 to rotate within the set range and rotate around the center.

[0039] The integral rotating base 1 also includes a conductive portion 15, a portion of which can be mounted on the rotating portion 14. When the motor 12 drives the rotating portion 14 and a portion of the conductive portion 15 to rotate via the transmission mechanism 13, the remaining portion of the conductive portion 15 is always electrically connected to the conductive portion 15 on the rotating portion 14. Regardless of how the rotating portion 14 and a portion of the conductive portion 15 rotate, a portion of the conductive portion 15 remains energized. An LED light 31 can be connected to the rotating portion 14, electrically connected to a portion of the conductive portion 15, and remains energized at all times during rotation.

[0040] The specific structure of the conductive part 15 is as follows: Figure 9 As shown, the conductive part 15 includes two conductive rings 151, two conductive elastic members 152 and a conductive body 153. The two conductive rings 151 can be installed at the lower end of the rotating part 14. The two conductive elastic members 152 and the conductive body 153 are electrically connected. The upper conductive elastic member 152 is electrically connected to the upper conductive ring 151, and the lower conductive elastic member 152 is electrically connected to the lower conductive ring 151. The two conductive rings 151 can be installed at the lower end of the rotating part 14. The two conductive rings 151 can rotate with the rotating part 14, and the conductive elastic member 152 is always electrically connected to the conductive ring 151. Therefore, the conductive body 153 can be connected to the power supply, and the conductive body 153 can keep the conductive elastic member 152 and the conductive ring 151 always in a powered state.

[0041] like Figure 9As shown, the conductive elastic member 152 in this embodiment is a spring. When the conductive ring 151 rotates with the rotating portion 14, the conductive elastic member 152 is in a compressed state. Therefore, the conductive elastic member 152 is always in contact with the conductive ring 151. When the conductive ring 151 rotates after power is applied, the spring force causes the conductive ring 151, the conductive elastic member 152, and the conductive body 153 to remain in a energized state. Of course, in other embodiments, the conductive elastic member 152 can also be a spring. Regardless of the structure of the conductive elastic member 152, as long as the conductive ring 151 rotates with the rotating portion 14, the conductive elastic member 152 is always in contact with the conductive ring 151.

[0042] like Figure 7 As shown, it can be seen that the rotating part 14 is cylindrical as a whole and the cross section of the conductive ring 151 is circular. This shape of the rotating part 14 and the conductive ring 151 can be more stable. That is to say, when the rotating part 14 rotates in a circle, the conductive ring 151 also rotates in a circle.

[0043] like Figure 3 As shown, the housing 111 includes an upper housing 1111 and a lower housing 1112. The upper housing 1111 and the lower housing 1112 form a storage space in which the motor 12 and the transmission mechanism 13 can be installed. The upper housing 1111 and the lower housing 1112 can better secure the motor 12 and the transmission mechanism 13. Of course, in other embodiments, the structure of the housing 111 is not limited to the above shape, as long as the housing 111 can accommodate the motor 12 and the transmission mechanism 13.

[0044] from Figure 1 It can be seen that the present invention also includes a USB power cord 4, on which a controller 41 can be installed. After the USB power cord 4 is connected to the power supply, the USB power cord 4 provides power to the motor 12 and the LED lamp 31. The motor 12 and the LED lamp 31 in this embodiment are connected in parallel, and the controller 41 can make the motor 12 rotate or the LED lamp 31 light up, or the motor 12 and the LED lamp 31 light up.

[0045] like Figure 2 As shown, the connecting component 32 in this embodiment includes a top plate 321, a bottom plate 322, and a connecting post 323. The connecting post 323 is fixed between the top plate 321 and the bottom plate 322, and can connect the top plate 321 and the bottom plate 322 together. The connecting post 323 is hollow as a whole, and the LED lamp 31 can be installed on the top plate 321. The LED lamp 31 has two connecting wires. The two connecting wires sequentially pass through the connecting post 323 and exit from the bottom plate 322, and then are respectively electrically connected to the two conductive rings 151. The two connecting wires can form an electrical connection between the two conductive rings 151 and the LED lamp 31.

[0046] Both the bottom plate 322 and the entire cover 112 are provided with through-holes. The bottom plate 322 and the entire cover 112 are secured together by screws. Specifically, the screws can be sequentially passed through the through-holes in the bottom plate 322 and the entire cover 112 to secure the bottom plate 322 to the entire cover 112. A flange can be integrally formed at the lower end of the entire cover 112. The flange and the decorative cover 2 are both integrally formed with through-holes. The flange of the decorative cover 2 and the entire cover 112 are secured together by screws. The screws can be sequentially passed through the through-holes in the decorative cover 2 and the entire cover 112 to secure the decorative cover 2 and the entire cover 112 together. In this embodiment, the decorative cover 2 is integrally formed with multiple butterfly-shaped hollow patterns.

[0047] The structure of the transmission mechanism 13 is described below: Figure 7 and Figure 8 As shown, the transmission mechanism 13 includes a transmission wheel set 131 and a gear set 132. The transmission wheel set 131 is connected to the motor 12, and the gear set 132 is connected to the transmission wheel set 131. The motor 12 is connected to the rotating part 14 through the transmission wheel set 131 and the gear set 132 in sequence.

[0048] The structure of the transmission wheel group 131 is described in detail below: the transmission wheel group 131 includes a first transmission wheel 1311, a belt 1312 and a second transmission wheel 1313. The first transmission wheel 1311 is coaxially connected to the output shaft of the motor 12. One end of the belt 1312 is sleeved on the first transmission wheel 1311, and the other end is sleeved on the second transmission wheel 1313. The second transmission wheel 1313 is connected to the gear group 132. When the motor 12 is started, the motor 12 can drive the first transmission wheel 1311 to rotate, and the first transmission wheel 1311 can be rotated by driving the second transmission wheel 1313, and the second transmission wheel 1313 can drive the gear group 132 to rotate.

[0049] The structure of the gear set 132 is described in detail below. The gear set 132 includes multiple gears that mesh with each other in sequence to form a reduction gear structure. One gear is coaxially connected to the second transmission wheel 1313, and another gear is coaxially connected to the rotating part 14. The multiple gears can achieve a reduction gear effect, so that the rotating part 14 rotates at a set speed. Since the gear set 132 can be set according to actual conditions, and the transmission ratio can be adjusted, the specific structure of the gear set 132 can be as follows: Figure 8 As shown, the arrangement of the gear set 132 is usually conventional, and therefore, it will not be described in detail.

[0050] In the present invention, after the motor 12 is started, the motor 12 can drive the rotating part 14 to rotate through the transmission mechanism 13. A conductive ring 151 is provided on the rotating part 14, and the conductive ring 151 can rotate along with the rotating part 14. Since the conductive elastic part 152 is always in contact with the conductive ring 151, and the conductive elastic part 152 is electrically connected to the conductive body 153, the conductive ring 151 can always be in a powered state. The conductive ring 151 can be electrically connected to the LED lamp 31 through a wire, so that the LED lamp 31 can always be in a powered state. The LED lamp 31 can rotate along with the rotating part 14, which can solve the problem in the prior art that the LED lamp 31 cannot be installed on the rotating part, so that users have a better usage experience.

[0051] In addition, the back of the entire cover body 112 in the present invention can be inserted into the rotating part, and the entire cover body 112 can rotate together with the rotating part 14, forming an effect that the entire cover body 112 and the rotating part rotate together, and the entire cover body 112 is fixedly connected to the connecting parts and the decorative cover, and the connecting parts, LED lights and decorative cover 2 will rotate synchronously with the entire cover body 112, and the light emitted by the LED lights can pass through the decorative cover 2 to produce a dynamic luminous effect.

[0052] The present invention is not limited to the above-mentioned optional implementation methods. Anyone can derive various other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that falls within the scope defined by the claims of the present invention shall fall within the scope of protection of the present invention.

Claims

1. An integral rotating decoration device, characterized in that: The invention comprises an integral rotating base (1), a decorative cover (2) and a light-emitting component (3); the decorative cover (2) is arranged on the integral rotating base (1); the light-emitting component (3) comprises an LED lamp (31) and a connecting component (32); the connecting component (32) is connected to the integral rotating base (1); the LED lamp (31) is arranged on the connecting component (32); and the connecting wire of the LED lamp (31) is connected to the integral rotating base (1); the integral rotating base (1) can drive the connecting component (32), the LED lamp (31) and the decorative cover (2) to rotate synchronously.

2. The integral rotating decoration device according to claim 1, characterized in that: The integral rotating base (1) comprises a base body (11), a bin body (111), a motor (12), a transmission mechanism (13), a rotating portion (14) and an integral cover body (112). The integral cover body (112) is arranged on the upper end surface of the base body (11). The motor (12) and the transmission mechanism (13) are both arranged in the bin body (111). The transmission mechanism (13) is connected to the motor (12). The transmission mechanism (13) is also connected to the rotating portion (14). The motor (12) can The rotating part (14) is driven to rotate by a transmission mechanism (13), and the entire cover body (112) is connected to the rotating part (14). The entire cover body (112) can rotate along with the rotating part (14). An accommodating portion is formed at the upper end of the rotating part (14), and a corresponding convex column (1121) is provided on the back side of the entire cover body (112). The convex column (1121) can be snapped into the accommodating portion so that the entire cover body (112) can rotate together with the rotating part (14).

3. The integral rotating decoration device according to claim 2, characterized in that: The upper end of the base body (11) is provided with a support plate (113), a through hole is provided at the middle position of the support plate (113), and a plurality of balls (1131) are provided on the support plate (113). The back of the entire cover body (112) is provided with a plurality of guide columns (1122), and the guide columns (1122) can be positioned at the edge of the through hole so that the entire cover body (112) can rotate within the range of the guide columns (1122). The back of the entire cover body (112) contacts the balls (1131) and forms a rolling connection.

4. The integral rotating decoration device according to claim 3, characterized in that: The integral rotating base (1) further comprises a conductive portion (15), a portion of which is provided on the rotating portion (14). When the motor (12) drives the rotating portion (14) and a portion of the conductive portion (15) to rotate via the transmission mechanism (13), the other portion of the conductive portion (15) can always form an electrical connection with the conductive portion (15) on the rotating portion (14). The conductive portion (15) comprises two conductive rings (151), two conductive elastic members (152) and a conductive body (153). Two conductive rings (151) are provided at the lower end of the rotating portion (14), two conductive elastic members (152) are electrically connected to the conductive body (153), one conductive elastic member (152) is electrically connected to one of the conductive rings (151), and the other conductive elastic member (152) is electrically connected to the other conductive ring (151), and the conductive elastic member (152) is a spring. When the conductive ring (151) rotates following the rotating portion (14), the conductive elastic member (152) is always in contact with the conductive ring (151).

5. The integral rotating decoration device according to claim 4, characterized in that: The rotating part (14) is cylindrical as a whole, the cross section of the conductive ring (151) is annular, the silo (111) comprises an upper silo (1111) and a lower silo (1112), the upper silo (1111) and the lower silo (1112) forming a receiving space, and the motor (12) and the transmission mechanism (13) are both arranged in the receiving space.

6. The integral rotating decoration device according to claim 5, characterized in that: The device further comprises a USB power cord (4), wherein the USB power cord (4) is provided with a controller (41). When the USB power cord (4) is connected to a power source, the USB power cord (4) provides electric energy to the motor (12) and the LED lamp (31). The motor (12) and the LED lamp (31) are connected in parallel. The controller (41) can cause the motor (12) to rotate and the LED lamp (31) to light up, or only cause the LED lamp (31) to light up.

7. The integral rotating decoration device according to claim 6, characterized in that: The connecting component (32) comprises a top plate (321), a bottom plate (322) and a connecting column (323); the connecting column (323) is arranged between the top plate (321) and the bottom plate (322); the connecting column (323) is hollow; the LED lamp (31) is arranged on the top plate (321); the LED lamp (31) has two connecting wires, which pass through the connecting column (323) and the bottom plate (322) in sequence and are electrically connected to the two conductive rings (151) respectively.

8. The integral rotating decoration device according to claim 7, characterized in that: Through holes are provided on both the bottom plate (322) and the entire cover body (112), and the bottom plate (322) and the entire cover body (112) are fixed together by screws.

9. The integral rotating decoration device according to any one of claims 2 to 8, characterized in that: The lower end of the entire cover body (112) is provided with a flange, and both the flange and the decorative cover (2) are provided with through holes. The decorative cover (2) and the flange of the entire cover body (112) are fixed together by screws.

10. The integral rotating decoration device according to claim 8, characterized in that: The decorative cover (2) is provided with a plurality of butterfly-shaped hollow patterns.

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