Custom adjusting mechanism facilitating lamp installation

Abstract

The utility model relates to a custom adjusting mechanism convenient for lamp installation, which comprises a rotating shaft device, an installation seat and a support, the rotating shaft device is connected with a lamp holder of a lamp, the rotating shaft device is connected with the support through the installation seat, and the support is arranged on a wall surface; the rotating shaft device comprises a front panel, a rear panel, a central shaft and a damping adjusting part, the front panel is connected with the lamp holder and is in sliding connection with the central shaft, the rear panel is rotationally connected with the central shaft and is connected with the mounting seat, and the damping adjusting part is movably connected to the central shaft. According to the technical scheme, after the lamp with the self-defined adjusting mechanism is installed, the illumination angle can be flexibly and conveniently adjusted according to actual needs, and therefore it can be ensured that the illumination area reaches the ideal state when the lamp is obliquely installed.

Description

Technical Field

[0001] The utility model relates to the technical field of lamps, and more particularly to a custom adjustment mechanism which is convenient for installing lamps. Background Art

[0002] Lamps installed on the wall, especially mirror lamps, need to be measured before installation. However, errors in the measurement process are often unavoidable. The existence of measurement errors can easily cause the mirror lamp to be installed in a tilted state, ultimately resulting in the failure to form an ideal lighting area.

[0003] Taking the mirror lamp as an example, at present, it is generally fixed to the wall by gluing. Some mirror lamps are directly fixed to the wall by fasteners such as bolts, or fixed to the bracket installed on the wall by fasteners such as bolts, so as to be kept around the mirror. For example, a Chinese patent with publication number CN216644031U discloses a bathroom mirror lamp including a fixed base and a lamp body. The fixed base includes a bottom shell and an upper shell. 3M double-sided tape is provided on the outer surface of the bottom shell. The bathroom mirror lamp is fixed to the position where the bathroom mirror needs to increase lighting by the 3M double-sided tape; another example is a Chinese patent with publication number CN208859432U, entitled "A kind of easy to install The Chinese patent for a "mirror lamp" includes a lamp body and a mounting frame; the lamp body is provided with a first baffle and a second baffle, and a mezzanine is formed between the first baffle and the second baffle; the mounting frame is provided with a fixing block and a mounting block, and the fixing block and the mounting block are fixedly connected together and form an L-shape; the mounting block is clamped in the mezzanine, and during installation, the mounting block can be clamped through the mezzanine, and the first baffle and the mounting block can be fixed by screws passing through the screw holes to fix the lamp body and the mounting frame, and then the mounting frame can be installed on the wall by screws passing through the horizontal mounting holes. Alternatively, after the lamp body and the mounting frame are fixed by the above method, the mounting frame can be installed on the top of the cabinet by screws passing through the longitudinal mounting holes.

[0004] A problem with mirror lamps and other lamps that need to be mounted on a wall using the above-mentioned method is that the illumination angle cannot be adjusted after fixation, making it impossible to adjust the lighting area to the ideal position. For example, gluing is a relatively rigid connection method. Gluing itself is a relatively rigid connection method. Once the lamp is pasted on the wall, the glue will tightly bond the lamp to the wall to form a relatively fixed whole. In this case, if you want to adjust the illumination angle, the adhesive force of the glue will hinder such adjustment because the glue does not have the elasticity or mobility to allow angle changes. When fixed by bolts, since the bolts lack an angle adjustment mechanism, once the lamp is fixed, it will be firmly fixed to the wall, and its angle relative to the wall cannot be easily changed. If you try to twist it to change the angle, it may cause the bolts to loosen, the wall or the bracket to be damaged, and other problems, affecting the fixing effect of the lamp. If you want to change the lighting area, both gluing and bolting require complicated disassembly and assembly steps, which is very inconvenient and affects the user experience. Utility Model Content

[0005] In view of the above situation, in order to overcome the problem that the above-mentioned existing lamps are easily installed in a tilted state after being fixed to the wall due to the existence of measurement errors, resulting in the inability to form an ideal lighting area, and the illumination angle itself cannot be adjusted, resulting in the inability to adjust the lighting area to the ideal position, the purpose of the utility model is to provide a customized adjustment mechanism that can flexibly and conveniently adjust the illumination angle according to actual needs after installation, so as to ensure that the lighting area reaches the ideal state when installed at an angle.

[0006] In order to achieve the above purpose, the technical solution of the utility model is:

[0007] A custom adjustment mechanism for facilitating lamp installation includes a shaft, a mounting base, and a bracket. The shaft is connected to the lamp base, and the shaft is connected to the bracket via the mounting base. The bracket is mounted on a wall.

[0008] The rotating shaft includes a front panel, a rear panel, a central axis and a damping adjustment member. The front panel is connected to the lamp holder and is slidingly connected to the central axis. The rear panel is rotationally connected to the central axis and is connected to the mounting seat. The damping adjustment member is movably connected to the central axis.

[0009] Preferably, the damping adjustment member includes an adjusting nut and an elastic washer, the adjusting nut is arranged on the side of the front panel away from the rear panel and is threadedly connected to the central axis, and the elastic washer is arranged between the adjusting nut and the front panel, and between the front panel and the rear panel.

[0010] Preferably, a limiting flange is formed at one end of the central axis, and the limiting flange cooperates with the step of the rear panel.

[0011] Preferably, a positioning bead is provided on the mounting seat, and a corresponding positioning hole is opened on the bracket, and the positioning bead is inserted into the positioning hole.

[0012] Preferably, the positioning beads and the corresponding positioning holes have two groups

[0013] Preferably, an upper hook is formed on the bracket, and a corresponding hanging hole is formed on the mounting seat. The hanging hole includes a hanging section and a margin section. The shape of the hanging section matches the upper hook. The upper hook is correspondingly inserted into the hanging section, and the inner diameter and length of the margin section are larger than the hanging section.

[0014] Preferably, a lower hook is formed on the bracket, and a supporting step is correspondingly formed on the outer wall of the mounting seat, and the supporting step is embedded in the lower hook.

[0015] Preferably, there are two groups of hanging holes and corresponding upper hooks, and there are two groups of supporting steps and corresponding lower hooks.

[0016] Preferably, a centering block is formed on the bracket, and a centering groove is correspondingly formed on the lamp holder, and the centering block is inserted into the centering groove.

[0017] Preferably, the shaft is fixed to the lamp holder and the mounting base by threaded fasteners.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] The bracket of the custom adjustment mechanism of the utility model is fixed on the wall. Before the shaft is installed on the lamp holder, the damping adjuster movably connected on the central axis can be used to drive the front panel to slide toward the rear panel, and the friction force formed on the rear panel can be changed, thereby adjusting the difficulty of relative rotation between the rear panel and the central axis. This is ultimately reflected in the bearing capacity, which can prevent the lamp holder and the connected lamp body from rotating relative to the rear panel and the connected mounting base and bracket through the front panel under the action of their own weight or other unexpected forces, causing deflection, so that the lamp holder and the lamp body can stably maintain the set angle;

[0020] Because the central axis of the rotating shaft and the rear panel can rotate relative to each other, when the lamp equipped with the custom adjustment mechanism of the utility model is installed, the user can control the rotation of the lamp holder, and the rotation action is transmitted to the front panel and the central axis. The central axis allows the front panel to rotate with the lamp holder, thereby changing the angle of the lamp holder and the lamp body. Even if the lamp body and the lamp holder are installed in a tilted state due to measurement errors, the illumination angle of the lamp body can be adjusted in time to adjust the lighting area to the ideal position. The entire adjustment process only requires a simple rotation action on the lamp holder, which simplifies the complicated disassembly and assembly steps. Therefore, the adjustment is convenient and labor-saving, which can significantly improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a lamp equipped with the custom adjustment mechanism of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the utility model when the custom adjustment mechanism is separated from the lamp holder and disassembled;

[0023] Figure 3 It is an overall schematic diagram of the custom adjustment mechanism of the utility model;

[0024] Figure 4 This is an overall schematic diagram of the custom adjustment mechanism of the utility model from another perspective;

[0025] Figure 5 It is an overall schematic diagram of the rotating shaft of the custom adjustment mechanism of the utility model;

[0026] Figure 6 It is an exploded schematic diagram of the rotating shaft of the custom adjustment mechanism of the utility model;

[0027] Figure 7 It is an overall schematic diagram of the mounting base of the custom adjustment mechanism of the utility model;

[0028] Figure 8 It is an overall schematic diagram of the bracket of the custom adjustment mechanism of the utility model;

[0029] Figure 9 This is a structural diagram of a lamp holder connected to a bracket through a mounting base of the custom adjustment mechanism of the utility model;

[0030] Figure 10 This utility model Figure 9 Schematic diagram of the enlarged structure of part A.

[0031] As shown in the figure:

[0032] 1. Lamp body; 2. Lamp holder; 201. Centering groove; 3. Rotator; 301. Front panel; 302. Rear panel; 303. Center axis; 303a. Limiting flange; 304. Damping adjustment member; 304a. Adjusting nut; 304b. Elastic washer; 4. Mounting seat; 401. Hanging hole; 401a. Suspension section; 401b. Margin section; 402. Support step; 5. Bracket; 501. Positioning hole; 502. Upper hook; 503. Lower hook; 504. Centering block; 6. Positioning bead; 7. Threaded fastener. DETAILED DESCRIPTION

[0033] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0034] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or the directions or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of simplifying the description, and do not indicate or imply that the directions are specific directions that must be possessed, or specific direction structures and operations, and therefore should not be understood as limitations on the present invention.

[0035] like Figures 1 to 6 As shown, the utility model relates to a custom adjustment mechanism that is convenient for installing a lamp. The custom adjustment mechanism is used to be installed on a lamp holder 2 of the lamp. Taking a mirror lamp as an example, a lamp body 1 is provided on the lamp holder 2 of the mirror lamp. The lamp body 1 and the lamp holder 2 are fixed by magnetic attraction, which facilitates replacement of the lamp body 1 when it is damaged. The lamp holder 2 is installed on the wall through the custom adjustment mechanism, so that the lamp body 1 can be kept near the mirror surface, providing local lighting for the area in front of the mirror, thereby improving the visual clarity of the user's activities in front of the mirror.

[0036] It includes a shaft device 3, a mounting base 4 and a bracket 5, wherein the shaft device 3 is connected to the lamp holder 2, and the shaft device 3 is connected to the bracket 5 through the mounting base 4. The bracket 5 has holes for fixing expansion bolts, so that it can be installed on the wall. It should be mentioned that the lamp holder 2, the shaft device 3, the mounting base 4, the bracket 5 and the wall are all detachably connected, which enables the shaft device 3 to be installed on the lamp holder 2 and connected to the mounting base 4 as an independent structure. Correspondingly, the mounting base 4 can be connected to the bracket 5, and the bracket 5 can also be fixed to the wall.

[0037] The rotating shaft 3 includes a front panel 301, a rear panel 302, a central axis 303 and a damping adjustment member 304, wherein the front panel 301 is connected to the lamp holder 2 and is slidably connected to the central axis 303. It should be mentioned that the shape of the position where the front panel 301 and the central axis 303 cooperate is non-circular, thereby only allowing the front panel 301 to slide along the central axis 303 and restricting its rotation relative to the central axis 303. The rear panel 302 is rotatably connected to the central axis 303, that is, the central axis 303 can also rotate relative to the rear panel 302, and the rear panel 302 is also connected to the mounting base 4. The damping adjustment member 304 is movably connected to the central shaft 303. The damping adjustment member 304 is used to drive the front panel 301 to slide and change the friction force formed on the rear panel 302, thereby adjusting the difficulty of relative rotation between the rear panel 302 and the central shaft 303. This is ultimately reflected by the bearing capacity. It can be understood that when the shaft device 3 is installed on the lamp holder 2, the front panel 301 and the lamp holder 2 are fixed. At this time, the damping adjustment member 304 cannot be used to drive the front panel 301 to move. Therefore, the damping adjustment member 304 can only be used to adjust the rear panel 302 when the shaft device 3 is disassembled. The size of the friction force formed, after the adjustment is completed, regardless of external factors such as wear, the friction force and the final bearing capacity will remain constant, preventing the lamp holder 2 and the connected lamp body 1 from rotating relative to the rear panel 302 and the connected mounting base 4 and bracket 5 through the front panel 301 under the action of their own weight or other parts of the accidental force, causing deflection, so that the lamp holder 2 and the lamp body 1 can stably maintain the set angle. At the same time, based on the relative rotation between the central axis 303 of the rotating shaft 3 and the rear panel 302, when the lamp equipped with the custom adjustment mechanism of the utility model is installed, Afterwards, the user can control the rotation of the lamp holder 2, and the rotation action is transmitted to the front panel 301 and the central axis 303. The central axis 303 allows the front panel 301 to rotate with the lamp holder 2, thereby changing the angle of the lamp holder 2 and the lamp body 1. Even if the lamp body 1 and the lamp holder 2 are installed in a tilted state due to measurement errors, the illumination angle of the lamp body 1 can be adjusted in time to adjust the lighting area to the ideal position. The entire adjustment process only requires a simple rotation action on the lamp holder 2, which simplifies the complicated disassembly and assembly steps. Therefore, the adjustment is convenient and labor-saving, which can significantly improve the user experience.

[0038] like Figures 3 to 6As shown, the damping adjustment member 304 includes an adjusting nut 304a and an elastic washer 304b. The adjusting nut 304a is arranged on the side of the front panel 301 away from the rear panel 302 and is threadedly connected to the central axis 303. Rotating the adjusting nut 304a to move it along the central axis 303 can push the front panel 301 to move synchronously along the central axis 303. There are multiple elastic washers 304b, each of which is arranged between the adjusting nut 304a and the front panel 301, and between the front panel 301 and the rear panel 302. The elastic washer 304b located between the adjusting nut 304a and the front panel 301 is used to protect the front panel 301 and prevent the front panel 301 from being damaged by the pressure of the adjusting nut 304a. The elastic washer 304b between the rear panel 302 protects the front panel 301 and the rear panel 302 at the same time, and when the adjusting nut 304a pushes the front panel 301 to move toward the rear panel 302, this part of the elastic washer 304b will be squeezed, and the elastic washer 304b will be deformed under pressure to generate elastic force. Under the action of pressure and elastic force, the friction formed between the elastic washer 304b and the rear panel 302 is increased, thereby changing the overall bearing capacity. It can be understood that the magnitude of the friction between the elastic washer 304b and the rear panel 302 is determined by the distance between the front panel 301 and the rear panel 302. When the distance is larger, the pressure applied by the front panel 301 to the elastic washer 304b between it and the rear panel 302 is reduced, and the friction formed on the rear panel 302 is smaller, otherwise it is larger.

[0039] like Figure 5 and Figure 6 As shown, a limiting flange 303a is formed at one end of the central axis 303, and the limiting flange 303a cooperates with the step of the rear panel 302. The limiting flange 303a can limit the movement of the rear panel 302, thereby preventing the rear panel 302 from being dislocated and ensuring that the rear panel 302 remains stably connected to the central axis 303.

[0040] like Figure 2 、 Figure 4 and Figure 8 As shown, a positioning bead 6 is provided on the mounting seat 4, and a corresponding positioning hole 501 is opened on the bracket 5. The positioning bead 6 is inserted into the positioning hole 501, and a preliminary connection is formed between the mounting seat 4 and the bracket 5 through the cooperation between the positioning bead 6 and the positioning hole 501.

[0041] Furthermore, there are two groups of positioning beads 6 and corresponding positioning holes 501. The cooperation of the two groups of positioning beads 6 and positioning holes 501 increases the number of connection points between the mounting seat 4 and the bracket 5, thereby preventing rotation between the mounting seat 4 and the bracket 5 and ensuring the stability of the relative position.

[0042] like Figure 3 、 Figure 4 、 Figure 7 and Figure 8As shown, an upper hook 502 is formed on the bracket 5, and a hanging hole 401 is correspondingly formed on the mounting base 4. The hanging hole 401 includes a hanging section 401a and a margin section 401b. The hanging section 401a is located above the margin section 401b and is connected to the margin section 401b. The shape of the hanging section 401a matches the upper hook 502, and the upper hook 502 is correspondingly inserted into the hanging section 401a. When the lamp holder 2 is pushed downward, the inner wall of the hanging section 401a of the hanging hole 401 is embedded in the upper hook 502, so that the upper hook 502 is hooked with the hanging hole 401, preventing the mounting base 4 from being moved relative to the bracket 5. The bracket 5 supports the mounting base 4 through the upper hook 502 to prevent the mounting base 4 from falling, thereby keeping the shaft 3 connected to the mounting base 4 and the lamp holder 2 and lamp body 1 connected to the shaft 3 at the desired wall position. In addition, the inner diameter and length of the margin section 401b are greater than the hanging section 401a. The margin section 401b can more accurately embed the hook into the hanging hole 401, and then move toward the hanging section 401a to form a hook with the hanging section 401a, thereby facilitating the connection between the hanging hole 401 and the hook, and correspondingly improving the speed of connecting the mounting base 4 and the bracket 5.

[0043] like Figure 3 、 Figure 4 、 Figure 7 and Figure 8 As shown, a lower hook 503 is formed on the bracket 5, and a corresponding supporting step 402 is formed on the outer wall of the mounting seat 4. The mounting seat 4 is embedded in the lower hook 503 through the supporting step 402, thereby forming a step fit. The lower hook 503 cooperates with the upper hook 502 to support the mounting seat 4 to prevent the mounting seat 4 from falling. At the same time, the number of connection points between the bracket 5 and the mounting seat 4 is increased, effectively preventing the mounting seat 4 from horizontally moving and rotating relative to the bracket 5.

[0044] Furthermore, there are two groups of hanging holes 401 and corresponding upper hooks 502, and two groups of supporting steps 402 and corresponding lower hooks 503. By further increasing the connection points between the mounting base 4 and the bracket 5, the connection stability is increased, and the upper hooks 502 and the lower hooks 503 are respectively located at the upper and lower ends of the bracket 5, which makes the connection points evenly distributed, thereby achieving stable support for the mounting base 4.

[0045] like Figure 2 、 Figure 4 as well as Figures 8 to 10As shown, a centering block 504 is formed on the bracket 5, and a centering groove 201 is correspondingly formed on the lamp holder 2. The centering block 504 is inserted into the centering groove 201, so that when the mounting base 4 is installed on the bracket 5, rapid centering can be achieved, and at the same time, the positioning bead 6 and the positioning hole 501, the upper hook 502 and the corresponding hanging hole 401, the lower hook 503 and the corresponding support step 402 are kept on the same plane. At this time, it is only necessary to rotate the lamp holder 2 to drive the mounting base 4 to rotate synchronously, and then apply a downward thrust to the lamp holder 2, so that the positioning bead 6 can be inserted into the corresponding positioning hole 501, the upper hook 502 can be inserted into the corresponding hanging hole 401 and hooked with each other, and the lower hook 503 can be hooked with the lower step position, completing the installation of the mounting base 4 and the entire lamp holder 2.

[0046] like Figure 2 As shown, the shaft 3 is fixed to the lamp holder 2 and the mounting base 4 by threaded fasteners 7. It should be mentioned that there are multiple threaded fasteners 7 for fixing the shaft 3 and the lamp holder 2, as well as multiple threaded fasteners 7 for fixing the shaft 3 and the mounting base 4, so as to achieve a stable connection.

[0047] Combine Figures 1 to 10 Before assembling the custom adjustment mechanism of the present invention, the shaft 3 is adjusted first, and the adjusting nut 304a of the damping adjustment member 304 is rotated. When the adjusting nut 304a pushes the front panel 301 to move toward the rear panel 302, this part of the elastic washer 304b is squeezed. The elastic washer 304b is deformed under pressure to generate elastic force. Under the action of pressure and elastic force, the friction between the front panel 301 and the rear panel 302 is increased, thereby changing the bearing capacity. After that, the front panel 301 is installed on the lamp holder 2 through the threaded fastener 7, and then the mounting base 4 is installed on the rear panel 302 through the threaded fastener 7, and the positioning bead 6 is installed on the mounting base 4. When installing on the wall, first fix the bracket 5 to the wall around the mirror, then align and snap the centering groove 201 of the lamp holder 2 with the centering block 504 on the bracket 5, so that the positioning bead 6 and the positioning hole 501, the upper hook 502 and the corresponding hanging hole 401, the lower hook 503 and the corresponding support step 402 remain on the same plane. At this time, it is only necessary to rotate the lamp holder 2 to drive the mounting base 4 to rotate synchronously, and then apply a downward thrust to the lamp holder 2, so that the positioning bead 6 can be inserted into the corresponding positioning hole 501, the upper hook 502 can be inserted into the corresponding hanging hole 401 and hooked with each other, and the lower hook 503 can be hooked with the lower step position, completing the installation of the mounting base 4 and the entire lamp holder 2, and finally installing the lamp body 1 on the lamp holder 2.

[0048] The above embodiments and descriptions are only for explaining the principle and best embodiment of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements shall fall within the scope of the present invention to be protected.

Claims

1. A custom adjustment mechanism for facilitating lamp installation, characterized in that: It comprises a rotating shaft (3), a mounting seat (4) and a bracket (5); the rotating shaft (3) is connected to a lamp holder (2) of the lamp, and the rotating shaft (3) is connected to the bracket (5) via the mounting seat (4); and the bracket (5) is arranged on a wall. The rotating shaft (3) comprises a front panel (301), a rear panel (302), a central axis (303) and a damping adjustment member (304); the front panel (301) is connected to the lamp holder (2) and is slidably connected to the central axis (303); the rear panel (302) is rotationally connected to the central axis (303) and is connected to the mounting seat (4); and the damping adjustment member (304) is movably connected to the central axis (303).

2. A custom adjustment mechanism for facilitating lamp installation according to claim 1, characterized in that: The damping adjustment member (304) comprises an adjustment nut (304a) and an elastic washer (304b). The adjustment nut (304a) is arranged on a side of the front panel (301) facing away from the rear panel (302) and is threadedly connected to the central axis (303). The elastic washer (304b) is arranged between the adjustment nut (304a) and the front panel (301), and between the front panel (301) and the rear panel (302).

3. A custom adjustment mechanism for facilitating lamp installation according to claim 2, characterized in that: One end of the central axis (303) is formed with a limiting flange (303a), and the limiting flange (303a) is matched with the step of the rear panel (302).

4. A custom adjustment mechanism for facilitating lamp installation according to any one of claims 1 to 3, characterized in that: A positioning bead (6) is provided on the mounting seat (4), and a positioning hole (501) is correspondingly provided on the bracket (5), and the positioning bead (6) is inserted into the positioning hole (501).

5. The custom adjustment mechanism for facilitating lamp installation according to claim 4, characterized in that: There are two groups of positioning beads (6) and corresponding positioning holes (501).

6. A custom adjustment mechanism for facilitating lamp installation according to any one of claims 1, 2, 3 or 5, characterized in that: An upper hook (502) is formed on the bracket (5), and a hanging hole (401) is correspondingly formed on the mounting seat (4). The hanging hole (401) comprises a hanging section (401a) and a margin section (401b). The shape of the hanging section (401a) matches the upper hook (502). The upper hook (502) is correspondingly inserted into the hanging section (401a). The inner diameter and length of the margin section (401b) are larger than those of the hanging section (401a).

7. The custom adjustment mechanism for facilitating lamp installation according to claim 6, characterized in that: A lower hook (503) is also formed on the bracket (5), and a supporting step (402) is correspondingly formed on the outer wall of the mounting seat (4), and the supporting step (402) is embedded in the lower hook (503).

8. The custom adjustment mechanism for facilitating lamp installation according to claim 7, characterized in that: There are two groups of hanging holes (401) and corresponding upper hooks (502), and there are two groups of supporting steps (402) and corresponding lower hooks (503).

9. A custom adjustment mechanism for facilitating lamp installation according to any one of claims 1, 2, 3, 5, 7 or 8, characterized in that: A centering block (504) is formed on the bracket (5), and a centering groove (201) is correspondingly formed on the lamp holder (2), wherein the centering block (504) is inserted into the centering groove (201).

10. The custom adjustment mechanism for facilitating lamp installation according to claim 9, characterized in that: The shaft rotating device (3) is fixed to the lamp holder (2) and the mounting seat (4) via a threaded fastener (7).

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