Driving mechanism and range hood with same
By designing a driving mechanism in the hood, the opening and closing of the suction port is solved, and the problems of smoke reflux and aesthetics are ensured to improve the kitchen air quality and appearance of the hood.
Patent Information
- Application Number
- CN202420324833.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-21
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-02-21
AI Technical Summary
The air suction ports of existing hoods are mostly open, which are prone to flue reflux, affecting the aesthetics and air quality.
A driving mechanism is designed, including a guide assembly, a transmission assembly and a driving member. Through the cooperation of the slider, connecting rod and pin shaft, the air suction port is opened and closed to avoid backflow of smoke.
When the suction vent is working, it effectively sucks away the smoke and keeps the kitchen air fresh; when it is not working, it blocks the suction vent to reduce the flue gas backflow and improves the aesthetics of the hood.
Smart Images

Figure CN222514038U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of range hoods, in particular to a driving mechanism and a range hood having the same. Background Art
[0002] In daily life, range hoods have entered the kitchens of thousands of households, solving the problem of kitchen fume for users; the air inlet 51 of the existing range hoods is mostly open, which is prone to the problem of smoke backflow and affects the aesthetics of the range hood. Therefore, there is room for improvement in the above technology. Utility Model Content
[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a driving mechanism, which can open the air suction port when the air suction port needs to work, so as to suck away the smoke and thus ensure the freshness of the air in the kitchen; when the air suction port is not working, the air suction port can be blocked to reduce the backflow of smoke and improve the aesthetics of the range hood.
[0004] The utility model also provides a range hood with the driving mechanism.
[0005] The driving mechanism according to the embodiment of the utility model is used for a range hood, comprising:
[0006] A guide assembly, comprising a guide member and a sliding member, wherein the sliding member is slidably disposed on the guide member;
[0007] The transmission assembly comprises a first connecting rod and a second connecting rod, wherein one end of the second connecting rod is rotatably connected to the sliding member and the other end is connected to a pin, and one end of the first connecting rod is rotatably connected to the pin;
[0008] A driving member, a driving end of which is connected to the other end of the first connecting rod and is used to drive the first connecting rod to move;
[0009] Among them, the movement of the first connecting rod includes linear movement and rotation. When the driving member drives the first connecting rod to move linearly, the first connecting rod drives the other end of the second connecting rod to swing through the pin shaft, and makes one end of the second connecting rod drive the sliding member to slide along the guide member; when the driving member drives the first connecting rod to rotate, one end of the first connecting rod rotates around the pin shaft, and the second connecting rod remains stationary.
[0010] According to the driving mechanism of the utility model, when the air suction port needs to work, the air suction port can be opened to suck away the smoke, thereby ensuring the freshness of the air in the kitchen; when the air suction port is not working, the air suction port can be blocked to reduce the backflow of smoke and improve the aesthetics of the range hood.
[0011] According to the driving mechanism of one embodiment of the utility model, when the driving end of the driving member is extended, the first connecting rod first moves linearly and then one end rotates around the pin shaft; when the driving end of the driving member is retracted, one end of the first connecting rod first rotates around the pin shaft and then moves linearly.
[0012] According to the driving mechanism of one embodiment of the utility model, when the first connecting rod performs linear movement, the moving direction of the first connecting rod is the same as the moving direction of the driving end of the driving member.
[0013] According to an embodiment of the utility model, the driving mechanism also includes a synchronization component, wherein the input end and the output end of the synchronization component are connected to a third connecting rod, the other end of the third connecting rod at the input end of the synchronization component is connected to the pin shaft, the other end of the third connecting rod at the output end of the synchronization component is connected to a fourth connecting rod, and the other end of the fourth connecting rod is connected to another group of the guide components.
[0014] According to a driving mechanism of an embodiment of the utility model, the synchronization assembly includes a synchronization shaft and a shaft seat, the synchronization shaft is rotatably connected in the shaft seat, and the input end and the output end of the synchronization shaft are connected to the third connecting rod.
[0015] According to the driving mechanism of one embodiment of the utility model, the third connecting rod is arc-shaped, and the concave surface of the arc faces the synchronization shaft.
[0016] The range hood according to the second aspect of the utility model is provided with a driving mechanism as described in any one of the first aspects, including a range hood main body, the range hood main body having an air intake port and a movable panel covering the air intake port, the driving mechanism being arranged in the range hood main body, the sliding member being connected to the movable panel and being used to drive the movable panel to move along a preset path to open or close the air intake port.
[0017] Furthermore, a guide groove is provided on the range hood body, the guide groove forms a preset path for the movement of the movable panel, a panel bracket is provided on the movable panel, a connecting plate is connected to the sliding member, and the panel bracket passes through the guide groove and is connected to the connecting plate so that the movable panel is connected to the guide assembly.
[0018] Furthermore, a hook is provided at the upper end of the panel bracket, a connecting position is provided on the connecting plate, a hanging shaft is provided on the connecting position, and the hook passes through the guide groove and is hung on the hanging shaft.
[0019] Furthermore, a connecting piece is provided on the panel bracket, a connecting portion is provided on the connecting piece and marbles are provided at the upper and lower ends of the connecting portion, a clamping piece is provided on the connecting plate, a size of the clamping slot of the clamping piece is adapted to the connecting portion, a limiting groove is provided on the upper and lower wall surfaces of the clamping slot, the connecting portion passes through the guide groove and is clamped in the clamping slot, and the marble is limited by the limiting groove.
[0020] The range hood according to the second aspect of the present invention is provided with a driving mechanism as described in any one of the first aspects. The range hood has the same advantages as the above driving mechanism over the prior art, which will not be described in detail here.
[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0023] Figure 1 This is a schematic diagram of the structure of the driving mechanism according to an embodiment of the utility model;
[0024] Figure 2 It is a second schematic diagram of the structure of the driving mechanism according to an embodiment of the utility model;
[0025] Figure 3 This is a schematic diagram of the structure of a range hood according to an embodiment of the utility model;
[0026] Figure 4 2 is a schematic diagram of the structure of a range hood according to an embodiment of the present utility model.
[0027] Reference numerals:
[0028] 1. Guide assembly, 11. Guide member, 12. Sliding member, 13. Connecting plate, 131. Connecting position, 132. Hanging shaft, 14. Connecting member,
[0029] 2. Transmission assembly, 21. First connecting rod, 22. Second connecting rod, 23. Pin shaft,
[0030] 3. Driving parts,
[0031] 4. Synchronous assembly, 41. Third connecting rod, 42. Fourth connecting rod, 43. Synchronous shaft, 44. Shaft seat,
[0032] 5. Hood body, 51. Air inlet, 52. Guide groove,
[0033] 6. Movable panel, 61. Panel bracket, 611. Hook, 62. Connecting piece, 621. Connecting part, 622. Marbles. DETAILED DESCRIPTION
[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0036] Reference below Figure 1-Figure 4 The drive mechanism according to the embodiment of the utility model is described. Figure 1 As shown, the driving mechanism according to the embodiment of the utility model, used in a range hood, may include:
[0037] The guide assembly 1, specifically, the guide assembly 1 may include a guide member 11 and a sliding member 12, further, the sliding member 12 is slidably arranged on the guide member 11; the guide member 11 can provide a guiding function for the sliding of the driving mechanism, and the sliding member 12 can slide along the track set by the guide member 11, so that the driving mechanism can slide along a predetermined route; thereby realizing the opening or covering of the air suction port 51, that is, when the air suction port 51 needs to work, the air suction port 51 can be opened to suck away the smoke, thereby ensuring the freshness of the air in the kitchen; when the air suction port 51 is not working, the air suction port 51 can be blocked to reduce the backflow of smoke and improve the aesthetics of the range hood.
[0038] Transmission assembly 2, further, the transmission assembly 2 may include a first connecting rod 21 and a second connecting rod 22, further, one end of the second connecting rod 22 is rotatably connected to the sliding member 12, so that the second connecting rod 22 can move with the sliding member 12, thereby driving the driving mechanism to slide along a predetermined route, thereby realizing the opening or covering of the air inlet 51, thereby reducing smoke backflow and improving the aesthetics of the range hood. Further, the other end of the second connecting rod 22 is connected to a pin shaft 23, through which a limiting effect can be provided for the movement of the second connecting rod 22, and further, a limiting effect can be provided for the movement of the driving mechanism; further, one end of the first connecting rod 21 is rotatably connected to the pin shaft 23; in this way, a limiting effect can be provided for the movement of the first connecting rod 21, and further, a limiting effect can be provided for the movement of the driving mechanism through the pin shaft 23.
[0039] The driving member 3, specifically, the driving end of the driving member 3 can be connected to the other end of the first connecting rod 21, so as to drive the first connecting rod 21 to move; in this way, the first connecting rod 21 is driven to move by the driving member 3, and then the movement of the driving mechanism can be driven, thereby realizing the opening or covering of the air suction port 51, that is, when the air suction port 51 needs to work, the air suction port 51 can be opened to suck away the smoke, thereby ensuring the freshness of the air in the kitchen; when the air suction port 51 is not working, the air suction port 51 can be blocked to reduce the backflow of smoke and improve the aesthetics of the range hood.
[0040] Furthermore, the movement of the first connecting rod 21 includes linear movement and rotation. Further, when the driving member 3 drives the first connecting rod 21 to move linearly, the first connecting rod 21 drives the other end of the second connecting rod 22 to swing through the pin shaft 23, and makes one end of the second connecting rod 22 drive the sliding member 12 to slide along the guide member 11. In this way, the first connecting rod 21 is driven to move linearly by the driving member 3, so that one end of the second connecting rod 22 drives the sliding member 12 to slide along the guide member 11, thereby driving the movement of the driving mechanism, thereby realizing the opening or covering of the air suction port 51, thereby reducing the backflow of smoke and improving the aesthetics of the range hood; further, when the driving member 3 drives the first connecting rod 21 to rotate, one end of the first connecting rod 21 rotates around the pin shaft 23, and the second connecting rod 22 remains stationary; in this way, one end of the first connecting rod 21 rotates around the pin shaft 23, and when the driving mechanism reaches the end position of the linear movement position, it starts to rotate and flip, thereby realizing the opening of the air suction port 51.
[0041] According to the driving mechanism of the utility model, when the air suction port 51 needs to work, the air suction port 51 can be opened to suck away the smoke, thereby ensuring the freshness of the air in the kitchen; when the air suction port 51 is not working, the air suction port 51 can be blocked to reduce the backflow of smoke and improve the aesthetics of the range hood.
[0042] According to a driving mechanism of an embodiment of the utility model, Figure 1As shown, when the driving end of the driving member 3 is extended, the first connecting rod 21 first moves linearly, and then one end rotates around the pin 23; in this way, the driving mechanism is first driven to reach the end position of the linear moving position, and then begins to unfold and flip, thereby realizing the opening of the air suction port 51. Further, when the driving end of the driving member 3 is retracted, one end of the first connecting rod 21 first rotates around the pin 23, and then moves linearly; in this way, the driving mechanism is first driven to start to recover and flip, and then drives the driving mechanism to reach the starting position of the linear moving position. In this way, through the cooperation between the driving member 3, the first connecting rod 21 and the pin 23, when the air suction port 51 needs to work, the air suction port 51 can be opened to suck away the smoke, thereby ensuring the freshness of the air in the kitchen; when the air suction port 51 is not working, the air suction port 51 can be blocked to reduce smoke backflow and improve the aesthetics of the range hood.
[0043] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.
[0044] According to the driving mechanism of one embodiment of the utility model, when the first connecting rod 21 makes linear movement, the moving direction of the first connecting rod 21 is the same as the moving direction of the driving end of the driving member 3; in this way, when the first connecting rod 21 makes linear movement, the driving mechanism can be driven to move between the starting position and the end position of the linear movement position, and by setting the moving direction of the first connecting rod 21 to be the same as the moving direction of the driving end of the driving member 3, it can be ensured that the movement of the driving mechanism is consistent with the moving directions of the first connecting rod 21 and the driving member 3.
[0045] In the description of the present invention, "plurality" means two or more.
[0046] According to a driving mechanism of an embodiment of the utility model, Figure 1As shown, it can also include a synchronization component 4, further, the input end and the output end of the synchronization component 4 are connected with a third connecting rod 41, and further, the other end of the third connecting rod 41 at the input end of the synchronization component 4 is connected to the pin 23, so that the other end of the third connecting rod 41 at the input end of the synchronization component 4 is connected to the pin 23, so that the left and right sides of the driving mechanism can be kept synchronized during the expansion and recovery of the linear movement, thereby avoiding the formation of gaps at the obstruction of the air inlet 51 after recovery, thereby reducing smoke backflow and ensuring the freshness of the kitchen air; and improving the aesthetics of the range hood. Further, the other end of the third connecting rod 41 at the output end of the synchronization component 4 is connected to a fourth connecting rod 42, and the other end of the fourth connecting rod 42 is connected to another set of guide components 1. In this way, by connecting another set of guide components 1 through the other end of the fourth connecting rod 42, it can be ensured that the left and right sides of the driving mechanism remain synchronized during the linear movement of deployment and recovery, thereby avoiding the formation of gaps in the air intake port 51 after recovery, thereby reducing smoke backflow and ensuring the freshness of the kitchen air; and improving the aesthetics of the range hood.
[0047] According to a driving mechanism of an embodiment of the utility model, Figure 1 As shown, the synchronization component 4 may include a synchronization shaft 43 and a shaft seat 44. Furthermore, the synchronization shaft 43 is rotatably connected in the shaft seat 44, and the input end and output end of the synchronization shaft 43 are connected to the third connecting rod 41; in this way, it can be ensured that the left and right sides of the driving mechanism remain synchronized during the rotation and movement, thereby avoiding the formation of gaps at the air intake port 51 after recovery, thereby reducing the backflow of smoke and ensuring the freshness of the kitchen air; and improving the aesthetics of the range hood.
[0048] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.
[0049] According to a driving mechanism of an embodiment of the utility model, Figure 1 As shown, the third connecting rod 41 is arc-shaped. By setting the third connecting rod 41 as an arc-shaped structure, a buffering effect can be provided for the driving force generated by the driving mechanism during the driving process, so that the driving of the driving mechanism can be smoother; specifically, the concave surface of the arc faces the synchronization shaft 43.
[0050] To sum up, according to the driving mechanism of the utility model, when the air suction port 51 needs to work, the air suction port 51 can be opened to suck away the smoke, thereby ensuring the freshness of the air in the kitchen; when the air suction port 51 is not working, the air suction port 51 can be blocked to reduce the backflow of smoke and improve the aesthetics of the range hood.
[0051] According to the second aspect of the utility model, the range hood Figure 3 and Figure 4 As shown, a driving mechanism as in any one of the first aspects is provided, specifically, it may also include a range hood body 5, further, the range hood body 5 has an air inlet 51 and a movable panel 6 covering the air inlet 51, the driving mechanism is arranged in the range hood body 5, further, the sliding member 12 is connected to the movable panel 6, and is used to drive the movable panel 6 to move along a preset path to open or close the air inlet 51. In this way, the movable panel 6 is driven by the driving mechanism to move, and when the air inlet 51 needs to work, the air inlet 51 can be opened to suck away the smoke, thereby ensuring the freshness of the air in the kitchen; when the air inlet 51 is not working, the air inlet 51 can be blocked to reduce smoke backflow and improve the aesthetics of the range hood.
[0052] Furthermore, if Figure 4 As shown, the range hood body 5 is provided with a guide groove 52. Further, the guide groove 52 forms a preset path for the movable panel 6 to move. The guide groove 52 can provide a guide for the movable panel 6 to move. Figure 3 As shown, a panel bracket 61 is provided on the movable panel 6, so that the panel bracket 61 can provide support for the connection between the movable panel 6 and the range hood body 5; further, a connecting plate 13 is connected to the sliding member 12, and the panel bracket 61 is connected to the connecting plate 13 through the guide groove 52, so that the movable panel 6 is connected to the guide assembly 1; in this way, through the connection between the movable panel 6 and the guide assembly 1, the synchronization of the movement of the movable panel 6 and the driving mechanism can be achieved.
[0053] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.
[0054] Furthermore, if Figure 3 As shown, a hook 611 is provided at the upper end of the panel bracket 61, a connecting position 131 is provided on the connecting plate 13, and further, a hanging shaft 132 is provided on the connecting position 131, and the hook 611 passes through the guide groove 52 and is hung on the hanging shaft 132. In this way, the connection between the movable panel 6 and the guide assembly 1 can be ensured by passing the hook 611 through the guide groove 52 and being hung on the hanging shaft 132, thereby achieving synchronization of the movement of the movable panel 6 and the driving mechanism.
[0055] Furthermore, if Figure 3As shown, the panel bracket 61 is provided with a connecting member 62, and the connecting member 62 is provided with a connecting portion 621 and marbles 622 are provided at the upper and lower ends of the connecting portion 621. By providing the marbles 622 at the upper and lower ends of the connecting portion 621, the connection position of the panel bracket 61 can be ensured to be more suitable, thereby ensuring the firmness and adaptability of the connection between the panel bracket 61 and the smoke machine body 5. Further, the connecting plate 13 is provided with a clamping member 14, and the size of the clamping slot of the clamping member 14 is adapted to the connecting portion 621, so that the firmness of the connection between the clamping member 14 and the connecting portion 621 can be ensured, thereby achieving the synchronization of the movement of the movable panel 6 and the driving mechanism. Further, the upper and lower end walls of the clamping slot are provided with a limiting groove, and the connecting portion 621 passes through the guide groove 52 and is clamped in the clamping slot, and the marbles 622 are limited by the limiting groove. In this way, by providing limiting grooves on the upper and lower wall surfaces of the slot, a limiting effect can be provided for the marble 622, thereby ensuring the firmness and adaptability of the connection between the panel bracket 61 and the range hood body 5.
[0056] In summary, according to the range hood of the second aspect of the utility model, by setting a driving mechanism, when the air intake port 51 needs to work, the air intake port 51 can be opened to suck away the smoke, thereby ensuring the freshness of the air in the kitchen; when the air intake port 51 is not working, the air intake port 51 can be blocked to reduce the backflow of smoke, that is, it has the advantage of reducing the backflow of smoke and is more aesthetically pleasing.
[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation 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.
[0058] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A driving mechanism for a range hood, characterized in that: include: A guide assembly (1), comprising a guide member (11) and a sliding member (12), wherein the sliding member (12) is slidably arranged on the guide member (11); A transmission assembly (2), comprising a first connecting rod (21) and a second connecting rod (22), wherein one end of the second connecting rod (22) is rotatably connected to the sliding member (12), and the other end is connected to a pin (23), and one end of the first connecting rod (21) is rotatably connected to the pin (23); A driving member (3), a driving end of which is connected to the other end of the first connecting rod (21) and is used to drive the first connecting rod (21) to move; The movement of the first connecting rod (21) includes linear movement and rotation. When the driving member (3) drives the first connecting rod (21) to move linearly, the first connecting rod (21) drives the other end of the second connecting rod (22) to swing through the pin shaft (23), and makes one end of the second connecting rod (22) drive the sliding member (12) to slide along the guide member (11); when the driving member (3) drives the first connecting rod (21) to rotate, one end of the first connecting rod (21) rotates around the pin shaft (23), and the second connecting rod (22) remains stationary.
2. The driving mechanism according to claim 1, characterized in that: When the driving end of the driving member (3) is extended, the first connecting rod (21) first moves linearly and then one end rotates around the pin shaft (23); when the driving end of the driving member (3) is retracted, one end of the first connecting rod (21) first rotates around the pin shaft (23) and then moves linearly.
3. The driving mechanism according to claim 2, characterized in that: When the first connecting rod (21) moves linearly, the moving direction of the first connecting rod (21) is the same as the moving direction of the driving end of the driving member (3).
4. The driving mechanism according to claim 3, characterized in that: It also includes a synchronization component (4), wherein the input end and the output end of the synchronization component (4) are connected to a third connecting rod (41), the other end of the third connecting rod (41) at the input end of the synchronization component (4) is connected to the pin shaft (23), the other end of the third connecting rod (41) at the output end of the synchronization component (4) is connected to a fourth connecting rod (42), and the other end of the fourth connecting rod (42) is connected to another group of the guide components (1).
5. The driving mechanism according to claim 4, characterized in that: The synchronization component (4) comprises a synchronization shaft (43) and a shaft seat (44); the synchronization shaft (43) is rotatably connected in the shaft seat (44); and the input end and the output end of the synchronization shaft (43) are connected to the third connecting rod (41).
6. The driving mechanism according to claim 5, characterized in that: The third connecting rod (41) is arc-shaped, and the concave surface of the arc faces the synchronization shaft (43).
7. A range hood, using the driving mechanism according to any one of claims 1 to 6, characterized in that: The range hood comprises a range hood body (5), the range hood body (5) having an air inlet (51) and a movable panel (6) covering the air inlet (51), the driving mechanism being arranged in the range hood body (5), the sliding member (12) being connected to the movable panel (6) and being used for driving the movable panel (6) to move along a preset path so as to open or close the air inlet (51).
8. The range hood according to claim 7, characterized in that: The range hood body (5) is provided with a guide groove (52), the guide groove (52) forming a preset path for the movable panel (6) to move, the movable panel (6) is provided with a panel bracket (61), the sliding member (12) is connected with a connecting plate (13), the panel bracket (61) passes through the guide groove (52) and is connected to the connecting plate (13), so that the movable panel (6) is connected to the guide assembly (1).
9. The range hood according to claim 8, characterized in that: A hook (611) is provided at the upper end of the panel bracket (61), a connecting position (131) is provided on the connecting plate (13), a hanging shaft (132) is provided on the connecting position (131), and the hook (611) passes through the guide groove (52) and is hung on the hanging shaft (132).
10. The range hood according to claim 9, characterized in that: The panel bracket (61) is provided with a connecting piece (62), the connecting piece (62) is provided with a connecting portion (621) and marbles (622) are arranged at the upper and lower ends of the connecting portion (621), the connecting plate (13) is provided with a clamping piece (14), the size of the clamping slot of the clamping piece (14) is adapted to the connecting portion (621), the upper and lower wall surfaces of the clamping slot are provided with limiting grooves, the connecting portion (621) passes through the guide groove (52) and is clamped in the clamping groove, and the marble (622) is limited by the limiting groove.