Film-covering fixing mechanism for display screen of smart watch

Abstract

The utility model provides an intelligent watch display screen film covering fixing mechanism which comprises a bottom plate, a protective shell is fixedly installed at the bottom of the bottom plate, a rotating assembly is fixedly installed on the left side of the front side of the protective shell, a rotating plate is fixedly installed at the top of the rotating assembly, and the protective shell is fixedly installed at the top of the rotating plate. A fixing assembly is fixedly installed on the front side of the protective shell, shells are fixedly installed on the two sides of the top of the fixing assembly, clamping assemblies are movably installed on the opposite sides of inner cavities of the two shells, and supporting legs are fixedly installed at the four corners of the bottom of the bottom plate. Through cooperative use of the fixing assembly, the shell and the clamping assembly, watch display screens of different sizes can be fixed, the display screens of various sizes can be supported, different fixing mechanisms do not need to be specially designed for each size, operation is easier and more convenient, it is ensured that the display screens of different sizes can be stably fixed, and the practicability is high. And the risk of loosening or falling of the screen is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of smart watches, and more specifically, to a fixing mechanism for covering a smart watch display screen with a film. Background Art

[0002] A smart watch is a wearable device that integrates functions such as a pedometer, heart rate monitoring, notification push, and GPS. It can display time, weather, message notifications, and also track fitness activities and health data. The display screen of a smart watch is one of its key components, directly affecting the user experience. A fixing mechanism is required during the process of covering the smart watch display screen with a film.

[0003] The existing fixing mechanism for covering a smart watch display screen is not convenient for fixing display screens of different sizes. When it is necessary to fix display screens of different sizes, different specifications of fixing mechanisms need to be replaced, which is time-consuming and laborious, increases costs, and is very inconvenient to use.

[0004] Therefore, we make improvements in this regard and propose a fixing mechanism for covering a smart watch display screen with a film. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problem that the existing fixing mechanism for covering a smart watch display screen is not convenient for fixing display screens of different sizes. When it is necessary to fix display screens of different sizes, different specifications of fixing mechanisms need to be replaced, which is time-consuming and laborious, increases costs, and is very inconvenient to use.

[0006] In order to achieve the above-mentioned invention purpose, the utility model provides the following technical solutions:

[0007] A fixing mechanism for covering a smart watch display screen with a film is provided to improve the above problems.

[0008] Specifically, this application is as follows:

[0009] It includes a bottom plate. A protective shell is fixedly installed at the bottom of the bottom plate. A rotating component is fixedly installed on the left side of the front side of the protective shell. A rotating plate is fixedly installed at the top of the rotating component. A protective shell is fixedly installed at the top of the rotating plate. A fixing component is fixedly installed on the front side of the protective shell. Clamping components are movably installed on opposite sides of the inner cavities of two outer shells at the top of the fixing component. Legs are fixedly installed at the four corners of the bottom of the bottom plate.

[0010] By the combined use of the fixing component, the outer shells, and the clamping components, display screens of different sizes of watches can be fixed, supporting display screens of multiple sizes. There is no need to design different fixing mechanisms specifically for each size, making the operation more convenient, ensuring that display screens of different sizes can be fixed firmly, and reducing the risk of the screen loosening or falling off.

[0011] As a preferred embodiment of the intelligent watch display film fixing mechanism provided by the present utility model, the rotating assembly includes a first motor, the first motor is fixedly installed on the left side of the front side of the protective shell, the output end of the first motor is fixedly installed with a rotating rod, one side of the rotating rod close to the protective shell is movably connected to the protective shell, a worm is fixedly installed on the surface of the rotating rod, a turbine is engaged with the right side of the worm, a connecting rod is fixedly installed in the inner cavity of the turbine, one side of the connecting rod close to the protective shell is movably connected to the protective shell, a support plate is fixedly installed on the top of the connecting rod, and the top of the support plate is fixedly connected to the bottom of the rotating plate.

[0012] As a preferred embodiment of the intelligent watch display film fixing mechanism provided by the present utility model, a first limiting plate is sleeved on the surface of the first motor, and one side of the first limiting plate close to the protective shell is fixedly connected to the protective shell.

[0013] As a preferred embodiment of the intelligent watch display film fixing mechanism provided by the present utility model, the fixing assembly includes a second motor, the second motor is fixedly installed on the front side of the protective shell, the output end of the second motor is fixedly installed with a threaded rod, a threaded sleeve is threadedly connected to the surface of the threaded rod, connecting plates are fixedly installed on both sides of the threaded sleeve, an inclined plate is fixedly installed on the rear side of the connecting plate, a movable wheel is movably installed on the rear side of the inclined plate, a support block is fixedly installed on the rear side of the movable wheel, a support rod is slidably installed in the inner cavity of the support block, both sides of the support rod are fixedly installed in the inner cavity of the protective shell, a spring is sleeved on the surface of the support rod, one side of the spring close to the support block is fixedly connected to the support block, and a connecting block is fixedly installed on the top of the support block, and one side of the connecting block close to the outer shell is fixedly connected to the outer shell.

[0014] As a preferred embodiment of the intelligent watch display film fixing mechanism provided by the present utility model, a second limiting plate is sleeved on the surface of the second motor, and one side of the second limiting plate close to the protective shell is fixedly connected to the protective shell.

[0015] As a preferred embodiment of the intelligent watch display film fixing mechanism provided by the present utility model, sliding blocks are fixedly installed on opposite sides of the two connecting plates, and a sliding rod is slidably installed in the inner cavity of the sliding block, and one side of the sliding rod close to the protective shell is fixedly connected to the protective shell.

[0016] As a preferred embodiment of the intelligent watch display film fixing mechanism provided by the present utility model, a positioning block is fixedly installed on the rear side of the support block, and a positioning rod is slidably installed in the inner cavity of the positioning block, and both sides of the positioning rod are fixedly installed in the inner cavity of the protective shell.

[0017] As a preferred embodiment of the intelligent watch display screen film covering fixing mechanism provided by the present utility model, the clamping assembly includes a movable rod, the movable rod is movably installed on one side of the inner cavity of the housing, a rotating disk is fixedly installed on one side of the movable rod, a gear is fixedly installed on one side of the movable rod, tooth plates are engaged with both the top and the bottom of the gear, baffles are fixedly installed on the opposite sides of the two tooth plates, two fixing plates are fixedly installed on one side of the baffle, and clamping plates are fixedly installed on the opposite sides of the two fixing plates.

[0018] As a preferred embodiment of the intelligent watch display screen film covering fixing mechanism provided by the present utility model, two limiting blocks are fixedly installed on both sides of the tooth plate, a limiting rod is slidably installed in the inner cavity of the limiting block, and the front side and the rear side of the limiting rod are fixedly installed in the inner cavity of the housing.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] Through the combined use of the fixing assembly, the housing and the clamping assembly, the display screens of watches with different sizes can be fixed, multiple sizes of display screens can be supported, there is no need to design different fixing mechanisms specifically for each size, the operation is made more convenient, it is ensured that the display screens of different sizes can be firmly fixed, and the risk of the screen loosening or falling off is reduced. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the intelligent watch display screen film covering fixing mechanism provided by the present application;

[0022] Figure 2 It is a schematic upward sectional view of the structure of the intelligent watch display screen film covering fixing mechanism provided by the present application;

[0023] Figure 3 It is a schematic upward view of the rotating assembly of the intelligent watch display screen film covering fixing mechanism provided by the present application;

[0024] Figure 4 It is a schematic downward sectional view of the fixing assembly of the intelligent watch display screen film covering fixing mechanism provided by the present application;

[0025] Figure 5 It is a schematic side sectional view of the clamping assembly of the intelligent watch display screen film covering fixing mechanism provided by the present application.

[0026] Labels in the figure:

[0027] 1. Bottom plate; 2. Protective case; 3. Rotating assembly; 301. First motor; 302. Rotating rod; 303. Worm; 304. Turbine; 305. Connecting rod; 306. Support plate; 307. First limiting plate; 4. Rotating plate; 5. Protective shell; 6. Fixing assembly; 601. Second motor; 602. Threaded rod; 603. Threaded sleeve; 604. Connecting plate; 605. Inclined plate; 606. Movable wheel; 607. Support block; 608. Support rod; 609. Spring; 610. Connecting block; 611. Second limiting plate; 612. Sliding block; 613. Sliding rod; 614. Positioning block; 615. Positioning rod; 7. Outer shell; 8. Clamping assembly; 801. Movable rod; 802. Rotating disk; 803. Gear; 804. Rack; 805. Baffle; 806. Fixed plate; 807. Clamping plate; 808. Limiting block; 809. Limiting rod; 9. Legs. Detailed implementation manners

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model.

[0029] Therefore, the following detailed description of the embodiments of the present utility model is not intended to limit the scope of the present utility model claimed, but merely represents some embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0030] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments may be combined with each other.

[0031] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0032] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0033] As described in the background art, the existing fixing mechanism for the display film of smart watches is not convenient for fixing display screens of different sizes. When it is necessary to fix display screens of different sizes, different specifications of fixing mechanisms need to be replaced, which is time-consuming and laborious, increases costs, and is very inconvenient to use.

[0034] To solve this technical problem, the present utility model provides a fixing mechanism for the display film of a smart watch.

[0035] Specifically, please refer to Figures 1-5 , the fixing mechanism for the display film of the smart watch specifically includes: a bottom plate 1, a protective case 2 is fixedly installed at the bottom of the bottom plate 1, a rotating assembly 3 is fixedly installed on the left side of the front side of the protective case 2, a rotating plate 4 is fixedly installed at the top of the rotating assembly 3, a protective shell 5 is fixedly installed at the top of the rotating plate 4, a fixing assembly 6 is fixedly installed on the front side of the protective shell 5, clamping assemblies 8 are movably installed on opposite sides of the inner cavities of the two outer shells 7, and legs 9 are fixedly installed at the four corners of the bottom of the bottom plate 1.

[0036] By the combined use of the fixing assembly 6, the outer shells 7 and the clamping assemblies 8, display screens of different sizes of watches can be fixed, multiple sizes of display screens can be supported, there is no need to specifically design different fixing mechanisms for each size, the operation is made more convenient, and it is ensured that display screens of different sizes can be firmly fixed, reducing the risk of the screen loosening or falling off.

[0037] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings.

[0038] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments can be combined with each other.

[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0040] Embodiment 1

[0041] Please refer to Figures 1-5, An intelligent watch display film fixing mechanism, including a bottom plate 1, a protective case 2 is fixedly installed at the bottom of the bottom plate 1, a rotating component 3 is fixedly installed on the left side of the front side of the protective case 2, a rotating plate 4 is fixedly installed at the top of the rotating component 3, a protective shell 5 is fixedly installed at the top of the rotating plate 4, a fixing component 6 is fixedly installed on the front side of the protective shell 5, outer shells 7 are fixedly installed on both sides of the top of the fixing component 6, clamping components 8 are movably installed on the opposite sides of the inner cavities of the two outer shells 7, and legs 9 are fixedly installed at the four corners of the bottom of the bottom plate 1. The rotating component 3 includes a first motor 301, the first motor 301 is fixedly installed on the left side of the front side of the protective case 2, the output end of the first motor 301 is fixedly installed with a rotating rod 302, the side of the rotating rod 302 close to the protective case 2 is movably connected with the protective case 2, a worm 303 is fixedly installed on the surface of the rotating rod 302, a turbine 304 is meshed with the right side of the worm 303, a connecting rod 305 is fixedly installed in the inner cavity of the turbine 304, the side of the connecting rod 305 close to the protective case 2 is movably connected with the protective case 2, a support disk 306 is fixedly installed at the top of the connecting rod 305, and the top of the support disk 306 is fixedly connected with the bottom of the rotating plate 4. A first limiting plate 307 is sleeved on the surface of the first motor 301, and the side of the first limiting plate 307 close to the protective case 2 is fixedly connected with the protective case 2.

[0042] During the implementation process, by starting the first motor 301, the first motor 301 drives the rotating rod 302 to rotate when in use, the rotation of the rotating rod 302 drives the worm 303 to rotate, the rotation of the worm 303 drives the turbine 304 to rotate, the rotation of the turbine 304 drives the connecting rod 305 to rotate, the rotation of the connecting rod 305 drives the support disk 306 to rotate, the rotation of the support disk 306 drives the rotating plate 4 to rotate, and the rotation of the rotating plate 4 drives the protective shell 5, the fixing component 6, the outer shells 7 and the clamping components 8 to rotate, thereby driving the display screen to rotate, enabling the angle of the display screen to be adjusted when it is fixed, which is more convenient in use.

[0043] Embodiment 2

[0044] The fixing component 6 includes a second motor 601, which is fixedly installed on the front side of the protective shell 5. The output end of the second motor 601 is fixedly installed with a threaded rod 602. A threaded sleeve 603 is threadedly connected to the surface of the threaded rod 602. Connecting plates 604 are fixedly installed on both sides of the threaded sleeve 603. An inclined plate 605 is fixedly installed on the rear side of the connecting plate 604. A movable wheel 606 is movably installed on the rear side of the inclined plate 605. A support block 607 is fixedly installed on the rear side of the movable wheel 606. A support rod 608 is slidably installed in the inner cavity of the support block 607. Both sides of the support rod 608 are fixedly installed in the inner cavity of the protective shell 5. A spring 609 is sleeved on the surface of the support rod 608. The side of the spring 609 close to the support block 607 is fixedly connected to the support block 607. A connecting block 610 is fixedly installed on the top of the support block 607. The side of the connecting block 610 close to the outer shell 7 is fixedly connected to the outer shell 7. A second limiting plate 611 is sleeved on the surface of the second motor 601. The side of the second limiting plate 611 close to the protective shell 5 is fixedly connected to the protective shell 5. Sliding blocks 612 are fixedly installed on the opposite sides of the two connecting plates 604. A sliding rod 613 is slidably installed in the inner cavity of the sliding block 612. The side of the sliding rod 613 close to the protective shell 5 is fixedly connected to the protective shell 5. A positioning block 614 is fixedly installed on the rear side of the support block 607. A positioning rod 615 is slidably installed in the inner cavity of the positioning block 614. Both sides of the positioning rod 615 are fixedly installed in the inner cavity of the protective shell 5.

[0045] During the implementation process, by starting the second motor 601, the second motor 601 drives the threaded rod 602 to rotate when in use. When the threaded rod 602 rotates, it drives the threaded sleeve 603 to move. When the threaded sleeve 603 moves, it drives the two connecting plates 604 to move. The inclined plate 605 will move along with the movement of the connecting plate 604. The two movable wheels 606 are movably installed on the rear sides of the two inclined plates 605 and will move closer to each other along with the movement of the two inclined plates 605. The support block 607 will move along with the movement of the movable wheel 606. The connecting block 610 and the protective shell 5 will move along with the movement of the support block 607. By moving the two protective shells 5 closer to each other, the left and right sides of the display screen can be fixed.

[0046] Embodiment 3

[0047] The clamping assembly 8 includes a movable rod 801, the movable rod 801 is movably installed on one side of the inner cavity of the housing 7, a rotating disk 802 is fixedly installed on one side of the movable rod 801, a gear 803 is fixedly installed on one side of the movable rod 801, tooth plates 804 are meshed with both the top and bottom of the gear 803, baffles 805 are fixedly installed on the opposite sides of the two tooth plates 804, two fixing plates 806 are fixedly installed on one side of the baffle 805, and clamping plates 807 are fixedly installed on the opposite sides of the two fixing plates 806. Two limit blocks 808 are fixedly installed on both sides of the tooth plate 804, a limit rod 809 is slidably installed in the inner cavity of the limit block 808, and the front side and the rear side of the limit rod 809 are fixedly installed in the inner cavity of the housing 7.

[0048] During the implementation process, by rotating the rotating disk 802, when the rotating disk 802 rotates, it drives the gear 803 to rotate through the movable rod 801. When the gear 803 rotates, the two tooth plates 804 are meshed to move closer to each other, and the baffle 805 will move along with the movement of the tooth plate 804. When the baffle 805 moves, it drives the clamping plate 807 to move through the fixing plate 806. By moving the two clamping plates 807 closer to each other, the front and rear sides of the display screen are clamped and fixed.

[0049] When in use, place the display screen on the top of the protective case 5. By starting the second motor 601, the second motor 601 drives the threaded rod 602 to rotate when in use. When the threaded rod 602 rotates, it drives the threaded sleeve 603 to move. When the threaded sleeve 603 moves, it drives two connecting plates 604 to move. The inclined plate 605 will move along with the movement of the connecting plate 604. The two movable wheels 606 are movably installed on the rear sides of the two inclined plates 605 and will move closer to each other along with the movement of the two inclined plates 605. The support block 607 will move along with the movement of the movable wheels 606. The connecting block 610 and the protective case 5 will move along with the movement of the support block 607. By moving the two protective cases 5 closer to each other, the left and right sides of the display screen can be fixed. By rotating the rotating disk 802, when the rotating disk 802 rotates, it drives the gear 803 to rotate through the movable rod 801. When the gear 803 rotates, it meshes the two toothed plates 804 to move closer to each other. The baffle 805 will move along with the movement of the toothed plate 804. When the baffle 805 moves, it drives the clamping plate 807 to move through the fixed plate 806. By moving the two clamping plates 807 closer to each other, the front and rear sides of the display screen are clamped and fixed, so that the display screens of different sizes of watches can be fixed, supporting display screens of multiple sizes, without the need to specifically design different fixing mechanisms for each size, making the operation more convenient, ensuring that display screens of different sizes can be firmly fixed, reducing the risk of the screen loosening or falling off. By starting the first motor 301, the first motor 301 drives the rotating rod 302 to rotate when in use. The rotation of the rotating rod 302 drives the worm 303 to rotate. The rotation of the worm 303 drives the turbine 304 to rotate. The rotation of the turbine 304 drives the connecting rod 305 to rotate. The rotation of the connecting rod 305 drives the support disk 306 to rotate. The rotation of the support disk 306 drives the rotating plate 4 to rotate. The rotation of the rotating plate 4 drives the protective case 5, the fixing component 6, the outer shell 7 and the clamping component 8 to rotate, thereby driving the display screen to rotate, so that the angle of the display screen can be adjusted when it is fixed, which is more convenient in use.

[0050] The above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above respective embodiments, the present invention is not limited to the above specific embodiments. Therefore, any modification or equivalent replacement to the present invention; and all technical solutions and their improvements that do not depart from the spirit and scope of the invention are covered by the scope of the claims of the present invention.

Claims

1. Smartwatch display film fixing mechanism, including a bottom plate (1), characterized in that, A protective shell (2) is fixedly installed at the bottom of the bottom plate (1). A rotating assembly (3) is fixedly installed on the left side of the front side of the protective shell (2). A rotating plate (4) is fixedly installed at the top of the rotating assembly (3). A protective housing (5) is fixedly installed at the top of the rotating plate (4). A fixing assembly (6) is fixedly installed on the front side of the protective housing (5). Shells (7) are fixedly installed on both sides of the top of the fixing assembly (6). Clamping assemblies (8) are movably installed on opposite sides of the inner cavities of the two shells (7). Legs (9) are fixedly installed at the four corners of the bottom of the bottom plate (1).

2. The film laminating and fixing mechanism for the smartwatch display screen according to claim 1, characterized in that, The rotating assembly (3) includes a first motor (301). The first motor (301) is fixedly installed on the left side of the front side of the protective shell (2). The output end of the first motor (301) is fixedly installed with a rotating rod (302). The side of the rotating rod (302) close to the protective shell (2) is movably connected to the protective shell (2). A worm (303) is fixedly installed on the surface of the rotating rod (302). A turbine (304) is engaged with the right side of the worm (303). A connecting rod (305) is fixedly installed in the inner cavity of the turbine (304). The side of the connecting rod (305) close to the protective shell (2) is movably connected to the protective shell (2). A support disk (306) is fixedly installed at the top of the connecting rod (305). The top of the support disk (306) is fixedly connected to the bottom of the rotating plate (4).

3. The intelligent watch display film fixing mechanism according to claim 2, wherein, A first limiting plate (307) is sleeved on the surface of the first motor (301). The side of the first limiting plate (307) close to the protective shell (2) is fixedly connected to the protective shell (2).

4. The intelligent watch display film fixing mechanism according to claim 1, wherein The fixing assembly (6) includes a second motor (601). The second motor (601) is fixedly installed on the front side of the protective housing (5). The output end of the second motor (601) is fixedly installed with a threaded rod (602). A threaded sleeve (603) is threadedly connected to the surface of the threaded rod (602). Connecting plates (604) are fixedly installed on both sides of the threaded sleeve (603). An inclined plate (605) is fixedly installed on the rear side of the connecting plate (604). A movable wheel (606) is movably installed on the rear side of the inclined plate (605). A support block (607) is fixedly installed on the rear side of the movable wheel (606). A support rod (608) is slidably installed in the inner cavity of the support block (607). Both sides of the support rod (608) are fixedly installed in the inner cavity of the protective housing (5). A spring (609) is sleeved on the surface of the support rod (608). The side of the spring (609) close to the support block (607) is fixedly connected to the support block (607). A connecting block (610) is fixedly installed at the top of the support block (607). The side of the connecting block (610) close to the shell (7) is fixedly connected to the shell (7).

5. The film laminating and fixing mechanism for the smart watch display screen according to claim 4, characterized in that, A second limiting plate (611) is sleeved on the surface of the second motor (601). The side of the second limiting plate (611) close to the protective housing (5) is fixedly connected to the protective housing (5).

6. The intelligent watch display film fixing mechanism according to claim 4, characterized in that Sliding blocks (612) are fixedly installed on opposite sides of the two connecting plates (604). A sliding rod (613) is slidably installed in the inner cavity of the sliding block (612). The side of the sliding rod (613) close to the protective shell (5) is fixedly connected to the protective shell (5).

7. The intelligent watch display film fixing mechanism according to claim 4, characterized in that, A positioning block (614) is fixedly installed on the rear side of the support block (607). A positioning rod (615) is slidably installed in the inner cavity of the positioning block (614). Both sides of the positioning rod (615) are fixedly installed in the inner cavity of the protective shell (5).

8. The intelligent watch display film fixing mechanism according to claim 1, wherein The clamping assembly (8) includes a movable rod (801). The movable rod (801) is movably installed on one side of the inner cavity of the outer shell (7). A rotating disc (802) is fixedly installed on one side of the movable rod (801). A gear (803) is fixedly installed on one side of the movable rod (801). Tooth plates (804) are engaged with the top and bottom of the gear (803). Baffles (805) are fixedly installed on opposite sides of the two tooth plates (804). Two fixing plates (806) are fixedly installed on one side of the baffle (805). Clamping plates (807) are fixedly installed on opposite sides of the two fixing plates (806).

9. The intelligent watch display film fixing mechanism according to claim 8, characterized in that, Two limiting blocks (808) are fixedly installed on both sides of the tooth plate (804). A limiting rod (809) is slidably installed in the inner cavity of the limiting block (808). The front side and the rear side of the limiting rod (809) are fixedly installed in the inner cavity of the outer shell (7).

Images