Billiard ball collecting device

Abstract

The utility model provides a billiard ball collecting device which comprises a base, a ball collecting cavity and a ball collecting device. The cover pressing assembly comprises a lifting frame and a ball pressing structure, the lifting frame is arranged on the base in a lifting mode, and the ball pressing structure is arranged at the bottom of the lifting frame and located above the ball collecting cavity; the base is further provided with a guide structure, and the lifting frame is movably matched with the guide structure and can ascend and descend relative to the guide structure. Compared with the prior art, the billiard ball collecting device can press the billiard balls to the table top of the billiard table through the billiard ball pressing structure, so that after the billiard ball collecting device leaves the billiard balls, all the billiard balls are not prone to rolling separation, all the billiard balls are accurately and stably attached to one another through the design of the billiard ball pressing structure, and the billiard balls are not prone to rolling separation through the design of the billiard ball pushing part. And the placing requirements of different spherical shapes can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to sports, competitive technical field, concretely relates to a billiard collecting device. BACKGROUND

[0002] Billiard (Bi l l i ard) is also called table ball or marble ball, and is one of ball sports. Athletes use a cue to hit a main ball on a billiard table according to certain rules, so that the main ball hits a target ball, which is a sports and leisure project.

[0003] The traditional billiard collecting device is only a simple triangular frame, and a ball collecting cavity is formed by the triangular frame, so that the structure is simple, the function of pressing the balls cannot be realized, and the balls may be rolled apart after the triangular frame is removed. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the defects and deficiencies in the prior art, and provides a billiard collecting device.

[0005] One embodiment of the utility model provides a billiard collecting device, which comprises:

[0006] A base is provided with a ball collecting cavity;

[0007] A gland assembly comprises a lifting frame and a ball pressing structure, the lifting frame is arranged on the base in a lifting manner, the ball pressing structure is arranged at the bottom of the lifting frame and above the ball collecting cavity;

[0008] The base is further provided with a guide structure, the lifting frame is movably connected with the guide structure and can be lifted relative to the guide structure.

[0009] In some optional embodiments, the ball collecting cavity is provided with a plurality of ball collecting positions, and the plurality of ball collecting positions are arranged in the ball collecting cavity;

[0010] The ball pressing structure comprises a plurality of ball pressing parts, and after the lifting frame descends towards the ball collecting cavity, the ball pressing parts are located at the centers of the ball collecting positions.

[0011] In some optional embodiments, the ball collecting cavity is provided with a plurality of ball collecting positions, and the plurality of ball collecting positions are arranged in the ball collecting cavity;

[0012] The ball pressing structure comprises a plurality of ball pushing parts arranged at the bottom of the lifting frame, the plurality of ball pushing parts are arranged around the ball collecting cavity, after the lifting frame descends towards the ball collecting cavity, the plurality of ball pushing parts are arranged at the ball collecting positions located at the edges of the ball collecting cavity, the ball pushing parts deviate from the centers of the corresponding ball collecting positions and are located on the side, away from the center of the ball collecting cavity, of the center of the ball collecting position.

[0013] In some optional embodiments, the plurality of ball pushing portions comprises a plurality of first ball pushing portions and at least one second ball pushing portion.

[0014] The plurality of first ball pushing portions are arranged around the ball collecting cavity, and after the lifting frame is lowered towards the ball collecting cavity, the plurality of first ball pushing portions are arranged at the ball collecting positions located at the edge of the ball collecting cavity, the first ball pushing portion is offset from the center of the corresponding ball collecting position, and is located on the side away from the center of the ball collecting cavity.

[0015] The second ball pushing portion is located between the plurality of first ball pushing portions, and after the lifting frame is lowered towards the ball collecting cavity, the second ball pushing portion is arranged at the ball collecting position other than the ball collecting position located at the edge of the ball collecting cavity, the second ball pushing portion is offset from the center of the corresponding ball collecting position, and is located on the side away from the center of the ball collecting cavity.

[0016] In some optional embodiments, the bottom end of the ball pushing portion is provided with a curved portion.

[0017] In some optional embodiments, the ball pushing portion comprises a base body, a pressing end and a buffer elastic member, the base body is arranged on the lifting frame, the pressing end is arranged on the bottom of the base body in a liftable manner, and the buffer elastic member is connected with the base body and the pressing end respectively.

[0018] In some optional embodiments, the ball pressing structure comprises a plurality of ball pressing portions, and after the lifting frame is lowered towards the ball collecting cavity, the ball pressing portions are arranged at the center of the ball collecting position.

[0019] The bottom of the pressing end is lower than the bottom of the ball pressing portion.

[0020] In some optional embodiments, a reset elastic member is further arranged between the lifting frame and the base, and the reset elastic member is elastically deformed when the lifting frame is lowered.

[0021] In some optional embodiments, the lifting frame comprises a middle frame and a pressing cover.

[0022] The middle frame is provided with the hollow slot, the hollow slot penetrates through the top and the bottom of the middle frame, the pressing cover is installed on the top of the middle frame, and the pressing cover covers the hollow slot.

[0023] The pressing cover has a light-transmitting portion, the hollow slot is arranged corresponding to the light-transmitting portion, or the pressing cover is a light-transmitting pressing cover.

[0024] The pressing cover structure is arranged on the middle frame and / or the pressing cover.

[0025] In some optional embodiments, a plurality of handle portions are arranged on the lifting frame.

[0026] Compared with the prior art, the billiard ball collecting device can press the billiard balls to the tabletop of the billiard table through the ball pressing structure, so that the billiard balls are not easy to roll and separate after the billiard ball collecting device leaves the billiard balls, and through the design of the ball pressing structure, the billiard balls can be accurately and stably close to each other, and through the design of the ball pushing part, the placing requirements of different ball types can be met.

[0027] In order to more clearly understand the present application, the specific embodiments of the present application will be described below in conjunction with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 FIG. 1 is a structural schematic view of a billiard ball collecting device and billiard balls according to an embodiment of the present application;

[0029] Figure 2 FIG. 4 is a structural schematic view of a gland assembly according to an embodiment of the present application;

[0030] Figure 3 FIG. 5 is an exploded view of a billiard ball collecting device and billiard balls according to an embodiment of the present application;

[0031] Figure 4 FIG. 6 is a structural schematic view of a base, a ball collecting position and a ball pressing structure according to an embodiment of the present application;

[0032] Figure 5 FIG. 7 is an exploded view of part of a gland assembly according to an embodiment of the present application.

[0033] BRIEF DESCRIPTION OF DRAWINGS

[0034] 10, base; 11, ball collecting cavity; 111, ball collecting position; 12, guide structure; 13, reset elastic member; 20, gland assembly; 21, lifting frame; 211, middle frame; 2111, hollow groove; 212, gland; 22, ball pressing structure; 221, ball pressing part; 222, ball pushing part; 2221, curved surface part; 2222, base body; 2223, pressure end; 2224, buffer elastic member; 223, first ball pushing part; 224, second ball pushing part; 23, handle portion; 30, billiard ball. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described in the description of the embodiments of the present application in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is 2 or more than 2, and the meaning of "several" is 1 or more than 1. In addition, unless otherwise specified, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0036] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "straight", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0037] In the description of the present application, unless otherwise specified and limited, the terms "mounting", "connection", "connecting", "fixing" should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0038] In the description of the present application, the description of the terms "one embodiment", "some optional embodiments" or "some optional examples" means that the specific features, structures, materials or characteristics described in combination with the embodiments or examples are included in at least one embodiment or example of the present application. In the description, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0039] It should be noted that the ball type refers to the arrangement form of a plurality of billiard balls, for example, 15 balls arranged in an equilateral triangle, 10 balls arranged in an equilateral triangle, and 9 balls arranged in a rhombus.

[0040] Please refer to Figure 1The utility model discloses an embodiment provides a kind of billiard collecting device, comprising: base 10 and gland assembly 20,

[0041] Base 10 is provided with ball collecting cavity 11;

[0042] Gland assembly 20 includes lifting frame 21 and ball pressing structure 22, lifting frame 21 is arranged on base 10 in a lifting manner, and ball pressing structure 22 is arranged at the bottom of lifting frame 21 and above ball collecting cavity 11.

[0043] The surface of billiard 30 table is usually provided with table mud or table cloth, and the embodiment is described by taking table mud as an example, and the billiard 30 itself has a certain weight. In actual normal circumstances, the billiard 30 rolls on the table mud, and the weight of the billiard 30 causes the billiard 30 to flow on the table mud, which is difficult to observe with naked eyes. This is because the table mud has a certain elasticity. Therefore, after the base 10 collects the billiard 30 into the ball collecting cavity 11, the lifting frame 21 is lowered, and the billiard 30 is pressed towards the tabletop of the billiard 30 table by the ball pressing structure 22, so that the billiard 30 can press a pit deep enough on the table mud. The pit can position the billiard 30, so that after the billiard collecting device leaves the billiard 30, the billiards 30 are not easy to roll and separate from each other, thereby improving the user experience.

[0044] The base 10 is also provided with a guide structure 12, the lifting frame 21 is movably connected with the guide structure 12 and can be lifted relative to the guide structure 12, thereby improving the lifting stability of the lifting frame, so that the ball pressing structure 22 can stably press the billiard 30.

[0045] In some optional embodiments, the ball collecting cavity 11 is pre-provided with a plurality of ball collecting positions 111, and the plurality of ball collecting positions 111 are arranged in the ball collecting cavity 11. The ball pressing structure 22 includes a plurality of ball pressing portions 221. After the lifting frame 21 is lowered towards the ball collecting cavity 11, the ball pressing portions 221 are located at the centers of the ball collecting positions 111. The arrangement mode of the ball collecting positions 111 is designed according to the type of balls arranged as needed. In the embodiment, there are totally 15 ball collecting positions 111, which are arranged in an equilateral triangle, with 5 ball collecting positions 111 on each side. After the billiard 30 is placed into the ball collecting cavity 11 and pressed by the ball pressing structure 22, the 15 billiards 30 are correspondingly located at the 15 ball collecting positions 111, and the centers of the billiards 30 correspond to the centers of the ball collecting positions 111. The lifting frame 21 drives the ball pressing portions 221 to descend, so that the ball pressing portions 221 can be pressed on the top center positions of the billiards 30, and the pressing force of the billiards 30 is straight downward, thereby improving the stability of the force received by the billiard 30. The ball collecting position 111 refers to the design based on the type of ball. By arranging the ball pressing structure 22, the billiard 30 can be arranged by the ball pressing structure 22, and finally stop at the position in the ball collecting cavity 11.

[0046] In some embodiments, the ball collecting cavity 11 is provided with a plurality of ball collecting positions 111 arranged in the ball collecting cavity 11, and the ball pressing structure 22 comprises a plurality of ball pushing portions 222 arranged on the bottom of the lifting frame 21, the plurality of ball pushing portions 222 are arranged around the ball collecting cavity 11, and after the lifting frame 21 is lowered towards the ball collecting cavity 11, the plurality of ball pushing portions 222 are arranged at the ball collecting positions 111 located at the edge of the ball collecting cavity 11, the ball pushing portion 222 is offset from the center of the corresponding ball collecting position 111 and located on the side of the center of the ball collecting position 111 away from the center of the ball collecting cavity 11, when the lifting frame 21 is lowered, since the billiard ball 30 is spherical, the ball pushing portion 222 is pressed against the top of the billiard ball 30 and the curved surface away from the ball collecting cavity 11, which will exert an inclined downward force on the billiard ball 30, the force can be decomposed into a horizontal pushing force in the horizontal direction towards the center of the ball collecting cavity 11 and a downward pressing force in the vertical direction, the horizontal pushing force enables the ball pushing portion 222 to push the billiard ball 30 to move towards the center of the ball collecting cavity 11, through the cooperation of the plurality of ball pushing portions 222, the billiard balls 30 located at the edge of the ball collecting cavity 11 are all pressed towards the center of the ball collecting cavity 11, thereby making all the billiard balls 30 tightly contact with each other, so that all the billiard balls 30 are accurately parked at the ball collecting positions 111 without shaking, and the downward pressing force helps the billiard ball 30 to form a pit on the billiard cloth, in combination with the ball pressing portion 221, the billiard ball 30 can be stably stressed and accurately positioned without easily shaking.

[0047] Sometimes users need to arrange the balls in different shapes. For example, in this embodiment, although there are 15 ball collection positions 111, sometimes it is not necessary to place billiard balls 30 in every ball collection position 111. Sometimes only 10 balls or 9 balls need to be placed in different shapes. Therefore, in some optional embodiments, the multiple ball pushing parts 222 are divided into multiple first ball pushing parts 223 and at least one second ball pushing part 224. The multiple first ball pushing parts 223 are arranged around the ball collection cavity 11. After the lifting frame 21 descends toward the ball collection cavity 11, the multiple first ball pushing parts 223 are correspondingly arranged in the ball collection cavity 11. At the ball-collecting position 111 on the edge, the first pusher 223 is offset from the center of the corresponding ball-collecting position 111 and is located on the side away from the center of the ball-collecting cavity 11. The second pusher 224 is located among the multiple first pushers 223. After the lifting frame 21 descends toward the ball-collecting cavity 11, the second pusher 224 is arranged at the ball-collecting positions 111 other than those located at the edge of the ball-collecting cavity 11. The second pusher 224 is offset from the center of the corresponding ball-collecting position 111 and is located on the side away from the center of the ball-collecting cavity 11. Both the first pusher 223 and the second pusher 224 can apply a downward force to the billiard ball 30. This force can be decomposed into a horizontal pushing force toward the center of the ball-collecting cavity 11 in the horizontal direction and a downward pressure in the vertical direction. The horizontal pushing force moves the billiard ball 30 toward the center of the ball-collecting cavity 11, while the downward pressure helps the billiard ball 30 form a dent on the table clay. The purpose of both the first pusher part 223 and the second pusher part 224 is to press and push the billiard ball 30 located at the edge of the spherical shape. Due to the change in the number of billiard balls 30 and the shape of the sphere, when the billiard ball 30 at the ball collection position 111 near the edge of the ball collection cavity 11 is at the edge of the spherical shape, it can be pressed and pushed by the second pusher part 224. The number and position of the second pusher part 224 can be selected according to specific needs. For example, in this embodiment, there are 15 ball collection positions 111, 12 first pusher parts 223, and 2 second pusher parts 224. Of course, the number of second pusher parts 224 can also be 1 or 3.

[0048] In some optional embodiments, the bottom end of the push part 222 is provided with a curved surface 2221, thereby preventing the bottom end of the push part 222 from scratching the billiard ball 30, and the contact between the curved surface 2221 and the surface of the billiard ball 30 also helps to improve the stability of the force. In this embodiment, the bottom of the pressing part 221 is flat, which facilitates accurate pressing at the highest point of the billiard ball 30 and improves the stability of the force.

[0049] In some alternative embodiments, the pushing part 222 comprises a base 2222, a pressing end 2223 and a buffer elastic member 2224, the base 2222 is arranged on the lifting frame 21, the pressing end 2223 is arranged on the bottom of the base 2222 in a lifting manner, the buffer elastic member 2224 is connected with the base 2222 and the pressing end 2223 respectively, after the lifting frame 21 is lowered, the pressing end 2223 presses on the billiard ball 30, the buffer elastic member 2224 is elastically deformed to provide the buffering function, after the lifting frame 21 is lifted, the elastic force of the buffer elastic member 2224 drives the pressing end 2223 to return to the original position. In the embodiment, the curved surface part 2221 is arranged on the bottom of the pressing end 2223. In addition, in some alternative embodiments, the horizontal height of the bottom of the pressing end 2223 is lower than the horizontal height of the bottom end of the pushing part 221, so that when the lifting frame 21 is lowered, the pressing end 2223 first contacts the billiard ball 30, while pushing the billiard ball 30 to the ball collecting position 111, the lifting frame 21 can continue to be lowered without causing the pressing end 2223 to excessively press the billiard ball 30 due to the elastic deformation of the buffer elastic member 2224, and then the pushing part 221 presses the billiard ball 30 at the ball collecting position 111 to the billiard table to complete a ball collecting operation.

[0050] The specific structure of the buffer elastic member 2224 can be selected according to actual needs, for example, the buffer elastic member 2224 adopts a buffer spring, the buffer spring is connected with the base 2222 and the pressing end 2223 respectively, in order to facilitate the installation of the buffer spring, a movable cavity can be arranged in the base 2222, the buffer spring is arranged in the movable cavity, and part of the pressing end 2223 is in sliding fit with the movable cavity, so that the pressing end 2223 can stably lift relative to the base 2222. Of course, the buffer elastic member 2224 can also adopt a buffer spring sheet, which is not limited to this example.

[0051] In some alternative embodiments, the lifting frame 21 and the base 10 are further provided with a reset elastic member 13, when the user drives the lifting frame 21 to be lowered, the reset elastic member 13 is elastically deformed, and then the lifting frame 21 can be lifted back to the original position by the elastic force of the reset elastic member 13, thereby simplifying the operation of the user.

[0052] In the embodiment, the guide structure 12 can adopt a guide column, the guide column is arranged on the base 10, and a guide hole is arranged on the lifting frame 21, the lifting frame 21 is in movable fit with the guide column through the guide hole, so that the lifting frame 12 can lift relative to the guide structure 12. Alternatively, the guide structure 12 can adopt a guide hole, a guide column is arranged on the base 10, and the guide column is in movable fit with the guide hole, so that the lifting frame 12 can lift relative to the guide structure 12. Of course, the guide structure 12 can also adopt other suitable structures, which are not limited to the guide column and the guide hole.

[0053] The specific structure of the reset elastic member 13 can be selected according to actual needs, for example, the reset elastic member 13 is a reset spring, the reset spring can be sleeved on the guide column, which is more convenient for installation of the reset spring, of course, the reset elastic member 13 can also be a reset spring, which is not limited to this example.

[0054] In some optional embodiments, the lifting frame 21 comprises a middle frame 211 and a cover 212; the middle frame 211 is provided with a hollow groove 2111 penetrating through the top and bottom of the middle frame 211, the cover 212 is installed on the top of the middle frame 211, the cover 212 covers the hollow groove 2111, the cover 212 has a light-transmitting part, the hollow groove 2111 is arranged corresponding to the light-transmitting part, or the cover 212 is a light-transmitting cover 212; the cover 212 is arranged on the middle frame 211 and / or the cover 212. The hollow groove 2111 can not only reduce the weight of the middle frame 211 and reduce the material cost of the middle frame 211, but also can facilitate the user to observe the situation in the ball collecting cavity 11 through the hollow groove 2111, and facilitate the user to confirm the state of the billiard ball 30. The cover 212 can improve the structural stability of the middle frame 211, and can also shield the hollow groove 2111 to avoid dust accumulation in the hollow groove 2111, and protect the middle frame 211 from being damaged. In addition, the light-transmitting part or the cover 212 adopts a light-transmitting design, which aims to enable light to pass through the cover 212, so that the user can observe the situation in the ball collecting cavity 11 through the light-transmitting part or the light-transmitting cover 212. In the present embodiment, the cover 212 is a transparent cover 212, and the user can observe the inside of the ball collecting cavity 11 through the transparent cover 212 and the hollow groove 2111. Of course, the structure of the lifting frame 21 is not limited to this, and those skilled in the art can also select other suitable structures according to the teachings of the present application.

[0055] In the present embodiment, the ball pressing part 221 is arranged at the bottom of the middle frame 211, and the ball pushing part 222 is arranged at the bottom of the cover 212, and the ball pushing part 222 passes through the middle and extends to the lower side of the middle frame 211.

[0056] In the present embodiment, the middle frame 211 is installed with the cover 212 through a buckle structure, a threaded structure or an adhesive, and of course, the middle frame 211 can be integrally formed with the cover 212.

[0057] In some optional embodiments, the lifting frame 21 is provided with a plurality of handle parts 23, which facilitate the user to hold and operate the lifting frame 21 to lift, and also facilitate the user to move the whole billiard ball collecting device.

[0058] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bill collection device, characterized by The application relates to a ball collecting device. The base is provided with a ball collecting cavity; The base is further provided with a guide structure, the lifting frame is movably connected with the guide structure and can be lifted relative to the guide structure. The ball collecting cavity is provided with a plurality of ball collecting positions arranged in the ball collecting cavity; 2. A bill collection device according to claim 1, wherein: The ball pressing structure comprises a plurality of ball pressing portions, and the ball pressing portions are located at the centers of the ball collecting positions after the lifting frame descends towards the ball collecting cavity. The ball collecting cavity is provided with a plurality of ball collecting positions arranged in the ball collecting cavity; 3. A bill collection device according to claim 1, wherein: The ball pressing structure comprises a plurality of ball pressing portions, and the ball pressing portions are located at the centers of the ball collecting positions after the lifting frame descends towards the ball collecting cavity. The ball collecting cavity is provided with a plurality of ball collecting positions arranged in the ball collecting cavity; 4. A bill collection device according to claim 3, wherein: The ball pressing structure comprises a plurality of ball pressing portions, and the ball pressing portions are located at the centers of the ball collecting positions after the lifting frame descends towards the ball collecting cavity. The ball pressing structure comprises a plurality of ball pressing portions, and the ball pressing portions are located at the centers of the ball collecting positions after the lifting frame descends towards the ball collecting cavity. The ball pressing structure comprises a plurality of ball pressing portions, and the ball pressing portions are located at the centers of the ball collecting positions after the lifting frame descends towards the ball collecting cavity.

5. A bill collection device according to claim 3, wherein: The ball pressing structure comprises a plurality of ball pressing portions, and the ball pressing portions are located at the centers of the ball collecting positions after the lifting frame descends towards the ball collecting cavity.

6. A bill collection device according to claim 3, wherein: The bottom end of the ball pressing portion is provided with a curved portion.

7. A cue ball collecting device according to claim 6, wherein: The ball pressing portion comprises a base body, a pressing end and a buffer elastic member, the base body is arranged on the lifting frame, the pressing end is movably arranged at the bottom of the base body, and the buffer elastic member is connected with the base body and the pressing end respectively. The ball pressing structure comprises a plurality of ball pressing portions, and the ball pressing portions are located at the centers of the ball collecting positions after the lifting frame descends towards the ball collecting cavity.

8. A bill collection device according to any one of claims 1 to 7, characterized in that: The bottom of the pressing end is lower than the bottom of the ball pressing portion.

9. A bill collection device according to any one of claims 1 to 7, characterized in that: The lifting frame and the base are further provided with a reset elastic member, and the reset elastic member is elastically deformed when the lifting frame descends. The lifting frame comprises a middle frame and a pressing cover. The middle frame is provided with a hollow groove penetrating through the top and bottom of the middle frame, the pressing cover is arranged on the top of the middle frame, and the pressing cover covers the hollow groove. The pressing cover is provided with a light-transmitting portion, the hollow groove is arranged corresponding to the light-transmitting portion, or the pressing cover is a light-transmitting pressing cover.

10. A bill collection device according to any one of claims 1 to 7, characterized in that: The pressing cover structure is arranged on the middle frame and / or the pressing cover. The lifting frame is provided with a plurality of handle portions.

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