LED lighting device convenient to debug

Abstract

The invention discloses an LED lighting device convenient to debug, and relates to the technical field of LED lighting, the LED lighting device convenient to debug comprises a shell and a lamp body, a matching groove is formed in the surface of one side of the shell, a debugging groove is formed in the surface of the other side of the shell, a matching shaft is connected to the surface of the lamp body, one end of the matching shaft is rotatably connected with the matching groove, and a debugging rod is slidably arranged in the debugging groove; one end of the debugging rod is connected with a debugging assembly, one end of the lamp body is connected with an adjusting assembly, and a combination assembly is arranged between the debugging assembly and the adjusting assembly. According to the LED lighting device convenient to debug, the debugging rod is arranged for convenient debugging, when the debugging rod slides left and right in the debugging groove, the debugging assembly is driven to move, then the adjusting assembly is driven to move under the cooperation of the combining assembly, and therefore the deflection angle of the lamp body is adjusted, and when the debugging rod slides up and down in the debugging groove, the adjusting assembly is driven to move. Therefore, the illumination area of the lamp body is adjusted.

Description

Technical Field

[0001] The invention relates to the technical field of LED lighting, and in particular to a convenient-to-adjust LED lighting device. Background Art

[0002] LED is a semiconductor device that emits light when current passes through it. LED lighting refers to lighting equipment that uses light-emitting diodes (LEDs) as light sources. Compared with traditional lighting methods such as incandescent lamps and fluorescent lamps, LED lighting has many significant advantages and has therefore been widely used in the field of modern lighting.

[0003] The commissioning of LED lighting devices involves many aspects to ensure their performance, effect and safety. For example, uniformity adjustment ensures that the light distribution of LED lighting equipment is uniform to avoid uneven brightness; beam angle adjustment adjusts the beam angle of LED lights according to lighting needs to achieve the ideal lighting range, etc.

[0004] According to the different application scenarios and functions of LED lighting devices, the debugging content of LED lighting devices will focus on different directions. For example, when used for roadside advertising, the irradiation angle of the light beam should be adjusted so that passing vehicles can see the advertisement more clearly; for example, when used for traffic lighting, the divergence of the light beam should be adjusted so that vehicles at more angles can see the signal, and the focusing angle of the light beam should also be adjusted to prevent the light from dazzling the driver's eyes; but under the existing technology, these different debugging methods are difficult to integrate into one device, and usually different devices are needed to adjust them one by one, which makes it difficult to debug the LED lighting device conveniently. Summary of the invention

[0005] The object of the present invention is to provide a conveniently adjustable LED lighting device to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions: A conveniently adjustable LED lighting device comprises a housing and a lamp body, wherein a matching groove is provided on one side surface of the housing, a debugging groove is provided on the other side surface of the housing, a matching shaft is connected to the surface of the lamp body, one end of the matching shaft is rotatably connected to the matching groove, and a debugging rod is slidably provided in the debugging groove; One end of the debugging rod is connected to a debugging component, one end of the lamp body is connected to an adjusting component, and a coupling component is provided between the debugging component and the adjusting component; When the debugging rod slides left and right in the debugging slot, it drives the debugging component to move, and then drives the adjustment component to move with the cooperation of the combining component, so as to adjust the deflection angle of the lamp body. When the debugging rod slides up and down in the debugging slot, the illumination area of ​​the lamp body is adjusted.

[0007] As a further preferred scheme in the embodiment of the present invention, a first fixed plate is connected to the upper surface of the shell, a first outer ring is connected to the lower end of the first fixed plate, a first inner ring is rotatably connected to the inside of the first outer ring, a second fixed plate is connected to the lower surface of the shell, a second outer ring is connected to the lower end of the second fixed plate, a second inner ring is rotatably connected to the inside of the second outer ring, a first connecting plate is connected to the upper end of the first inner ring, and a second connecting plate is connected between the first inner ring and the second inner ring.

[0008] As a further preferred scheme in the embodiment of the present invention, the debugging component includes an upper rod rotatably connected to the inside of the first inner ring, and the upper end of the upper rod is connected to the second debugging seat, and the first debugging shaft is rotatably connected in the second debugging seat, and one end of the debugging rod is connected to the debugging bar, and the upper end of the first connecting plate is connected to the first debugging seat, and one side of the first debugging seat is rotatably connected to the second debugging shaft, and one end of the second debugging shaft is connected to the surface of one side of the debugging bar, and a limit groove is provided in the debugging bar, and the first debugging shaft is slidably matched with the inside of the limit groove.

[0009] As a further preferred solution in the embodiment of the present invention, the debugging component also includes a debugging gear fan connected to the surface of the upper rod.

[0010] As a further preferred scheme in the embodiment of the present invention, the debugging assembly also includes an outer rod rotatably connected to the inside of the second inner ring, and the upper end of the outer rod is rotatably connected to the lower end of the upper rod, and the inner rod is slidably sleeved inside the outer rod, and the upper end of the inner rod is fixedly connected to the lower end of the upper rod, and a conversion groove is provided on the side wall of the outer rod, and a conversion rod is slidably connected in the conversion groove, and one end of the conversion rod is fixedly connected to the side surface of the inner rod, and the lower end of the inner rod is fixedly connected to a limiting block, and the side surface of the outer rod is connected to a debugging rotating plate.

[0011] As a further preferred solution in the embodiment of the present invention, a first connecting rod is slidably connected to the upper surface of the shell, and a second connecting rod is slidably connected to the upper and lower surfaces of the shell, one end of the second connecting rod is connected to a plurality of connecting strips, and a first connecting strip is connected between the plurality of connecting strips.

[0012] As a further preferred scheme in the embodiment of the present invention, the coupling assembly includes a coupling rack connected to one end of the first connecting rod, and the coupling rack is meshed with the debugging gear fan, and a telescopic rod is connected to one side surface of the coupling rack, and the telescopic end of the telescopic rod is connected to one side surface of one of the coupling bars.

[0013] As a further preferred scheme in the embodiment of the present invention, the coupling assembly also includes a coupling rod abutting against the side surface of the debugging turn plate, and the two ends of the coupling rod are respectively slidably connected to the two side surfaces inside the shell, and a second connecting strip is connected to one side surface of the coupling rod, and one end of the second connecting strip is connected to one side surface of one of the coupling strips.

[0014] As a further preferred scheme in the embodiment of the present invention, the adjustment component includes a matching seat connected to one end of the lamp body, and an adjustment shaft is rotatably connected inside the matching seat, and a matching groove is provided on one side of the combining strip, and an adjustment rod is rotatably connected in the combining groove, and an adjustment groove is provided at one end of the adjusting rod, and the adjustment shaft is slidably connected to the inside of the adjustment groove.

[0015] In the above technical solution, the conveniently adjustable LED lighting device provided by the present invention has the following beneficial effects: The present invention provides a debugging rod for convenient debugging. When the debugging rod slides left and right in the debugging groove, it drives the debugging component to move, and then drives the adjustment component to move in cooperation with the combination component, so as to adjust the deflection angle of the lamp body. When the debugging rod slides up and down in the debugging groove, the illumination area of ​​the lamp body is adjusted.

[0016] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention; Figure 2 A schematic diagram of the overall structure from another perspective provided by an embodiment of the present invention; Figure 3 A schematic diagram of the internal structure provided by an embodiment of the present invention; Figure 4 The embodiment of the present invention provides Figure 3 The enlarged structural diagram at A in the middle; Figure 5 The embodiment of the present invention provides Figure 3 The enlarged structural diagram at B in the middle; Figure 6 A schematic diagram of the internal structure from another perspective provided by an embodiment of the present invention; Figure 7 The embodiment of the present invention provides Figure 6 The enlarged structural diagram at C in the middle; Figure 8 The embodiment of the present invention provides Figure 6 Enlarged structural diagram at point D in the middle.

[0019] Description of reference numerals: 1. Shell; 101. Matching groove; 102. Debugging groove; 2. Lamp body; 201. Matching shaft; 202. Matching seat; 203. Adjusting rod; 204. Adjusting groove; 205. Adjusting shaft; 3. First outer ring; 301. Second outer ring; 302. First fixing plate; 303. Second fixing plate; 304. First inner ring; 305. Second inner ring; 306. First connecting plate; 307. Second connecting plate; 4. Stop block; 401. Inner rod; 402. Outer rod; 403. Conversion groove; 404 , conversion rod; 405, upper rod; 406, debugging rotating plate; 407, debugging gear fan; 5, debugging rod; 501, first debugging seat; 502, debugging strip; 503, limiting groove; 504, second debugging seat; 505, first debugging axis; 506, second debugging axis; 6, combined rack; 601, first connecting rod; 602, telescopic rod; 603, combining strip; 604, combining groove; 605, second connecting rod; 606, first connecting strip; 607, combining rod; 608, second connecting strip. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0021] See also Figure 1 - Figure 8 A conveniently adjustable LED lighting device comprises a housing 1 and a lamp body 2. A matching groove 101 is provided on one side of the housing 1, and a debugging groove 102 is provided on the other side of the housing 1. A matching shaft 201 is connected to the surface of the lamp body 2. One end of the matching shaft 201 is rotatably connected to the matching groove 101. A debugging rod 5 is slidably provided in the debugging groove 102. One end of the debugging rod 5 is connected to a debugging component, one end of the lamp body 2 is connected to an adjustment component, and a coupling component is provided between the debugging component and the adjustment component; When the debugging rod 5 slides left and right in the debugging slot 102, it drives the debugging component to move, and then drives the adjustment component to move with the cooperation of the combination component, so as to adjust the deflection angle of the lamp body 2. When the debugging rod 5 slides up and down in the debugging slot 102, the illumination area of ​​the lamp body 2 is adjusted.

[0022] The present invention provides a debugging rod 5 for convenient debugging. When the debugging rod 5 slides left and right in the debugging groove 102, it drives the debugging component to move, and then drives the adjustment component to move in cooperation with the combination component, so as to adjust the deflection angle of the lamp body 2. When the debugging rod 5 slides up and down in the debugging groove 102, the illumination area of ​​the lamp body 2 is adjusted.

[0023] Furthermore, the debugging slot 102 is a "cross" shaped slot structure.

[0024] In an embodiment further provided by the present invention, a first fixed plate 302 is connected to the inner upper surface of the shell 1, a first outer ring 3 is connected to the lower end of the first fixed plate 302, a first inner ring 304 is rotatably connected inside the first outer ring 3, a second fixed plate 303 is connected to the inner lower surface of the shell 1, a second outer ring 301 is connected to the lower end of the second fixed plate 303, a second inner ring 305 is rotatably connected inside the second outer ring 301, a first connecting plate 306 is connected to the upper end of the first inner ring 304, and a second connecting plate 307 is connected between the first inner ring 304 and the second inner ring 305.

[0025] In an embodiment further provided by the present invention, the debugging component includes an upper rod 405 rotatably connected to the inside of the first inner ring 304, and the upper end of the upper rod 405 is connected to the second debugging seat 504, and the first debugging shaft 505 is rotatably connected in the second debugging seat 504, and one end of the debugging rod 5 is connected to the debugging bar 502, and the upper end of the first connecting plate 306 is connected to the first debugging seat 501, and one side of the first debugging seat 501 is rotatably connected to the second debugging shaft 506, and one end of the second debugging shaft 506 is connected to the surface of one side of the debugging bar 502, and a limiting groove 503 is provided in the debugging bar 502, and the first debugging shaft 505 slides in cooperation with the inside of the limiting groove 503.

[0026] Furthermore, the upper rod 405 is also slidably matched with the first inner ring 304 .

[0027] Furthermore, the limiting groove 503 is a long straight groove structure, and the groove structure direction is parallel to the debugging bar 502.

[0028] Specifically, when the debugging rod 5 is moved left and right in the debugging slot 102 , the first inner ring 304 is driven by the first connecting plate 306 to rotate in the first outer ring 3 , and the upper rod 405 is driven by the debugging bar 502 to rotate synchronously in the first inner ring 304 .

[0029] Furthermore, when the debugging rod 5 is moved up and down in the debugging slot 102, the debugging bar 502 rotates around the second debugging shaft 506 as the axis, and then the second debugging seat 504 is pulled up, so that the first debugging shaft 505 slides in the limit slot 503, thereby driving the upper rod 405 to make a linear motion up and down.

[0030] In an embodiment further provided by the present invention, the debugging assembly also includes a debugging gear fan 407 connected to the surface of the upper rod 405.

[0031] Specifically, when the upper rod 405 rotates synchronously in the first inner ring 304 , the debugging gear fan 407 is driven to rotate synchronously with the upper rod 405 as the axis.

[0032] In an embodiment further provided by the present invention, the debugging assembly also includes an outer rod 402 rotatably connected to the inside of the second inner ring 305, and the upper end of the outer rod 402 is rotatably connected to the lower end of the upper rod 405, and the inner rod 401 is slidably sleeved inside the outer rod 402, and the upper end of the inner rod 401 is fixedly connected to the lower end of the upper rod 405, and a conversion groove 403 is provided on the side wall of the outer rod 402, and a conversion rod 404 is slidably connected in the conversion groove 403, and one end of the conversion rod 404 is fixedly connected to the side surface of the inner rod 401, and the lower end of the inner rod 401 is fixedly connected to the limiting block 4, and the side surface of the outer rod 402 is connected to a debugging rotating plate 406.

[0033] Furthermore, when the upper rod 405 rotates synchronously in the first inner ring 304, the upper rod 405 and the inner rod 401 rotate relative to each other, so that the upper rod 405 rotates alone without driving the inner rod 401 to move, and they do not interfere with each other.

[0034] Furthermore, the conversion groove 403 is a spiral groove structure.

[0035] Specifically, when the upper rod 405 makes a linear motion up and down, it drives the inner rod 401 to move up and down together inside the outer rod 402, and then drives the conversion rod 404 to slide in the conversion groove 403. Under the action of the conversion groove 403, the sliding of the conversion rod 404 is converted into the rotational motion of the outer rod 402, thereby driving the debugging rotating plate 406 to rotate around the outer rod 402 as the axis.

[0036] In an embodiment further provided by the present invention, a first connecting rod 601 is slidably connected to the inner upper surface of the shell 1, and a second connecting rod 605 is also slidably connected to the inner upper and lower surfaces of the shell 1, one end of the second connecting rod 605 is connected to a plurality of connecting bars 603, and a first connecting bar 606 is connected between the plurality of connecting bars 603.

[0037] Furthermore, the first connecting rod 601 and the second connecting rod 605 can slide in two directions inside the housing 1, namely left-right and front-back, so as to cooperate with different debugging methods.

[0038] In an embodiment further provided by the present invention, the coupling assembly includes a coupling rack 6 connected to one end of a first connecting rod 601, and the coupling rack 6 is meshed with the debugging gear fan 407, and a telescopic rod 602 is connected to a surface on one side of the coupling rack 6, and the telescopic end of the telescopic rod 602 is connected to a surface on one side of one of the coupling bars 603.

[0039] Specifically, when the debugging gear fan 407 rotates synchronously with the upper rod 405 as the axis, the debugging gear fan 407 is driven to move left and right, so that the connecting bar 603 is driven to move left and right synchronously.

[0040] In an embodiment further provided by the present invention, the coupling assembly also includes a coupling rod 607 abutting against the side surface of the debugging rotating plate 406, and the two ends of the coupling rod 607 are respectively slidably connected to the two side surfaces inside the shell 1, and a second connecting strip 608 is connected to the one side surface of the coupling rod 607, and one end of the second connecting strip 608 is connected to the one side surface of one of the coupling strips 603.

[0041] Furthermore, in the initial state, the debugging rotating plate 406 is not vertically abutted against the combining rod 607, so that when the debugging rotating plate 406 rotates in different directions, it will drive the combining rod 607 to move forward or backward.

[0042] Furthermore, a spring according to the prior art is connected between the coupling rod 607 and the inside of the housing 1 , so that the coupling rod 607 can always abut against the side surface of the debugging rotating plate 406 .

[0043] Specifically, when the debugging rotating plate 406 rotates with the outer rod 402 as the axis, it drives the combining rod 607 to move forward and backward, thereby driving the combining bar 603 to be synchronously driven to move forward and backward.

[0044] In an embodiment further provided by the present invention, the adjustment component includes a mating seat 202 connected to one end of the lamp body 2, and an adjustment shaft 205 is rotatably connected inside the mating seat 202, and a mating groove 604 is provided on one side of the coupling bar 603, and an adjustment rod 203 is rotatably connected inside the coupling groove 604, and an adjustment groove 204 is provided at one end of the adjustment rod 203, and the adjustment shaft 205 is slidably connected to the inside of the adjustment groove 204.

[0045] Furthermore, the adjustment groove 204 is a curved groove structure.

[0046] Furthermore, when the coupling bar 603 moves, the adjusting rod 203 is driven to rotate, thereby driving the adjusting shaft 205 to slide in the adjusting groove 204, and then the lamp body 2 rotates around the matching shaft 201 as the axis.

[0047] In the present invention, the staff adjusts the device by toggling the debugging rod 5 according to the different factors such as the direction and area that need to be dealt with when the device is illuminated during on-site installation; when the debugging rod 5 is toggled to move left and right in the debugging groove 102, the first inner ring 304 is rotated in the first outer ring 3 under the drive of the first connecting plate 306, and the upper rod 405 is synchronously rotated in the first inner ring 304 under the drive of the debugging bar 502, thereby driving the debugging gear fan 407 to rotate synchronously with the upper rod 405 as the axis, thereby driving the debugging gear fan 407 to move left and right, so that the combining bar 603 is driven to move left and right synchronously, and when the combining bar 603 moves left and right, it drives the adjustment rod 203 to rotate, thereby driving the adjustment shaft 205 to slide in the adjustment groove 204, thereby causing the lamp body 2 to rotate left and right with the matching shaft 201 as the axis to adjust the deflection angle of the lamp body 2; toggling the debugging rod When the adjusting bar 502 moves up and down in the adjusting slot 102, the adjusting bar 502 rotates with the second adjusting shaft 506 as the axis, and then the second adjusting seat 504 is pulled up, so that the first adjusting shaft 505 slides in the limiting slot 503, thereby driving the upper rod 405 to make a linear movement up and down, and then driving the inner rod 401 to move up and down together inside the outer rod 402, and then driving the conversion rod 404 to slide in the conversion slot 403, so that under the action of the conversion slot 403, the sliding of the conversion rod 404 is converted into the rotational movement of the outer rod 402, thereby driving the adjusting rotating plate 406 to rotate with the outer rod 402 as the axis, and then driving the combining rod 607 to move forward and backward, thereby driving the combining bar 603 to be synchronously driven to move forward and backward, and then driving the lamp body 2 to open or close with the matching shaft 201 as the axis, so as to adjust the focusing degree of the lamp body 2, so as to adjust the illuminated area and the divergence degree of the light.

[0048] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A conveniently adjustable LED lighting device, comprising a housing (1) and a lamp body (2), characterized in that: A matching groove (101) is provided on one side surface of the shell (1), a debugging groove (102) is provided on the other side surface of the shell (1), a matching shaft (201) is connected to the surface of the lamp body (2), one end of the matching shaft (201) is rotatably connected to the matching groove (101), and a debugging rod (5) is slidably provided in the debugging groove (102); One end of the debugging rod (5) is connected to a debugging component, one end of the lamp body (2) is connected to an adjustment component, and a coupling component is provided between the debugging component and the adjustment component; When the debugging rod (5) slides left and right in the debugging slot (102), the debugging component is driven to move, and then the adjustment component is driven to move in cooperation with the combination component, thereby adjusting the deflection angle of the lamp body (2); when the debugging rod (5) slides up and down in the debugging slot (102), the illumination area of ​​the lamp body (2) is adjusted.

2. The portable LED lighting device according to claim 1, characterized in that: The upper surface of the shell (1) is connected to a first fixing plate (302), the lower end of the first fixing plate (302) is connected to a first outer ring (3), the first outer ring (3) is rotatably connected to a first inner ring (304), the lower surface of the shell (1) is connected to a second fixing plate (303), the lower end of the second fixing plate (303) is connected to a second outer ring (301), the second outer ring (301) is rotatably connected to a second inner ring (305), the upper end of the first inner ring (304) is connected to a first connecting plate (306), and a second connecting plate (307) is connected between the first inner ring (304) and the second inner ring (305).

3. The portable LED lighting device according to claim 2, characterized in that: The debugging assembly comprises an upper rod (405) rotatably connected to the inside of the first inner ring (304), and the upper end of the upper rod (405) is connected to the second debugging seat (504), and the second debugging seat (504) is rotatably connected to the first debugging shaft (505), and one end of the debugging rod (5) is connected to the debugging bar (502), and the upper end of the first connecting plate (306) is connected to the first debugging seat (501), and one side of the first debugging seat (501) is rotatably connected to the second debugging shaft (506), and one end of the second debugging shaft (506) is connected to the surface of one side of the debugging bar (502), and a limiting groove (503) is provided in the debugging bar (502), and the first debugging shaft (505) is slidably matched with the inside of the limiting groove (503).

4. The portable LED lighting device according to claim 3, characterized in that: The debugging assembly also includes a debugging gear fan (407) connected to the surface of the upper rod (405).

5. The portable LED lighting device according to claim 4, characterized in that: The debugging assembly further comprises an outer rod (402) rotatably connected to the inside of the second inner ring (305), and the upper end of the outer rod (402) is rotatably connected to the lower end of the upper rod (405), and the inner rod (401) is slidably sleeved inside the outer rod (402), and the upper end of the inner rod (401) is fixedly connected to the lower end of the upper rod (405), and a conversion groove (403) is provided on the side wall of the outer rod (402), and a conversion rod (404) is slidably connected in the conversion groove (403), and one end of the conversion rod (404) is fixedly connected to the side surface of the inner rod (401), and the lower end of the inner rod (401) is fixedly connected to a limit block (4), and the side surface of the outer rod (402) is connected to a debugging rotating plate (406).

6. The portable LED lighting device according to claim 5, characterized in that: A first connecting rod (601) is slidably connected to the upper surface of the shell (1), and a second connecting rod (605) is slidably connected to the upper and lower surfaces of the shell (1), one end of the second connecting rod (605) is connected to a plurality of connecting bars (603), and a first connecting bar (606) is connected between the plurality of connecting bars (603).

7. The portable LED lighting device according to claim 6, characterized in that: The coupling assembly comprises a coupling rack (6) connected to one end of a first coupling rod (601), the coupling rack (6) being meshed with a debugging gear fan (407), a telescopic rod (602) being connected to one side surface of the coupling rack (6), and a telescopic end of the telescopic rod (602) being connected to one side surface of one of the coupling bars (603).

8. The portable LED lighting device according to claim 7, characterized in that: The coupling assembly further comprises a coupling rod (607) abutting against a side surface of the debugging rotating plate (406), and two ends of the coupling rod (607) are respectively slidably connected to two side surfaces inside the shell (1), and a second connecting strip (608) is connected to one side surface of the coupling rod (607), and one end of the second connecting strip (608) is connected to a side surface of one of the coupling strips (603).

9. The portable LED lighting device according to claim 8, characterized in that: The adjustment component comprises a matching seat (202) connected to one end of the lamp body (2), and an adjustment shaft (205) is rotatably connected inside the matching seat (202), and a matching groove (604) is provided on one side of the matching strip (603), and an adjustment rod (203) is rotatably connected inside the matching groove (604), and an adjustment groove (204) is provided at one end of the adjustment rod (203), and the adjustment shaft (205) is slidably connected to the inside of the adjustment groove (204).

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