Noise reduction type computer with limiting supporting structure

Abstract

The invention discloses a noise reduction type computer provided with a limiting supporting structure, and relates to the field of computers, the noise reduction type computer comprises a computer host, and an external butt joint piece is installed on the outer side of the computer host; an auxiliary noise reduction structure is arranged in the external butt joint piece, and external noise formed by the computer host is isolated through the auxiliary noise reduction structure. According to the noise reduction type computer provided with the limiting and supporting structure, the movable abutting piece is stressed to move upwards along the interior of the external butt joint piece after falling to the ground, and the movable abutting piece drives the butt joint attaching piston piece through the traction rope to conduct air suction and negative pressure treatment inwards along the inner side of the external butt joint piece; the pressure intensity between the external butt joint piece in the attached and sealed state and the computer host is changed, a certain vacuum preset cavity state is formed, noise generated when the computer host works is made to remain in the vacuum preset cavity, the divergent noise of the noise is reduced, and noise reduction treatment is conducted while the outer side of the computer host is protected.

Description

Technical Field

[0001] The invention relates to the technical field of computers, and in particular to a noise reduction computer provided with a position limiting support structure. Background Art

[0002] As the main component of a computer, the quality of the computer mainframe determines the overall quality of the computer operation. Therefore, the research and development of computer mainframes is also gradually being optimized and improved.

[0003] For example, a computer host with publication number CN109917870A includes a mainframe case, a mainboard, and a mainboard mounting device disposed inside the mainframe case, wherein the mainboard mounting device includes a support rod disposed on the mainboard, a fixing block disposed on the mainframe case and detachable from the support rod, and a locking mechanism for switching the support rod and the fixing block between a locked state and a separated state. The computer host, by providing a mainboard mounting device with a special structure, facilitates the disassembly and assembly of the mainboard, is easy to operate, saves the time for disassembly and assembly of the mainboard, and improves the speed of repairing and replacing the mainboard;

[0004] Another example is a computer host with publication number CN112083771A, which includes a host chassis, the interior of which has an installation cavity, in which a computer control component and a heat dissipation fan are installed, a side panel is provided on one side of the host chassis, the middle of the side panel is hollowed out to form a hollow cavity, a floating plate is provided on the inner side of the hollow cavity, a filter ring is fixedly provided between the floating plate and the inner wall of the side panel, a rectangular cavity is formed in the middle of the filter ring, and the rectangular cavity is provided opposite to the hollow cavity. The traditional computer host structure is changed, the air intake filter structure is provided on the side, and the power button is provided inside the host chassis, so that it can be cleaned every time the computer is turned on and off, and it has very good sealing when not in use, which increases the sealing of the air intake filter port and the safety of the power button, and reduces the amount of dust accumulated on the heat dissipation fan;

[0005] For example, a computer mainframe case with publication number CN111580619A includes a case body, an intermediate tube inside the case body, an air inlet passage with a top opening inside the intermediate tube, a filter screen installed at the top open end of the air inlet passage, a micro air pump installed in the air inlet passage at the bottom of the filter screen, one or more movable mounting plates are movablely mounted on the outside of the intermediate tube, a through hole is arranged in the middle of the movable mounting plate at a position corresponding to the intermediate tube, the through hole passes through the intermediate tube, a support portion is convexly arranged on the movable mounting plate at the upper end of the through hole, a support airbag is installed on the support portion, the top of the support airbag contacts the upper movable mounting plate, and the support airbags are connected to each other through an air duct. The computer mainframe case can have very good moisture-proof and dust-proof properties when not in use;

[0006] Most of the computer hosts in the above-mentioned public documents have improved their overall structures, while the existing computer hosts are mostly placed vertically during operation. When the user accidentally kicks them with their legs or they are exposed to external force, the position of the computer host may become tilted or even the internal components may become loose, which results in certain limitations in use. Summary of the invention

[0007] The object of the present invention is to provide a noise reduction computer with a limiting support structure to solve the problem mentioned in the above background technology that the existing computer host is mostly placed vertically during operation, and when the user accidentally kicks it with his legs or contacts it with external force, the position of the computer host may be skewed or even the internal components may become loose, thereby resulting in certain usage limitations.

[0008] To achieve the above object, the present invention provides the following technical solution: a noise reduction computer provided with a limit support structure, comprising a computer host and an external docking piece, wherein the external docking piece is installed on the outside of the computer host;

[0009] A guide nesting piece is fixed to the upper end of the external docking piece, and the external docking piece is nested and docked with the computer host through the guide nesting piece, and a counterweight block is arranged at the lower end of the external docking piece, a preset cavity is opened on the inner side of the external docking piece, and an auxiliary noise reduction structure is arranged inside the external docking piece, and the external noise generated by the computer host is isolated by the auxiliary noise reduction structure;

[0010] A docking positioning suction cup assembly is installed at the lower end of the external docking piece, and an auxiliary positioning structure is arranged between the docking positioning suction cup assembly and the external docking piece, and the auxiliary positioning structure is used to perform positioning processing on the computer host when it contacts external force.

[0011] Furthermore, the auxiliary noise reduction structure is provided with a movable resistance member, and the movable resistance member is nested and docked on the inner side of the external docking member, and a first spring is fixedly connected between the upper end of the movable resistance member and the external docking member, a docking fitting piston member is nested and installed on the inner side of the preset cavity, and the docking fitting piston member is docked with the inner side of the external docking member, and a second spring is fixedly connected between the docking fitting piston member and the external docking member, a traction rope is docked on the inner side of the docking fitting piston member, and the traction rope passes through the interior of the external docking member, and the end of the traction rope is docked with the outer side of the movable resistance member.

[0012] Furthermore, after the movable resistance member falls to the ground, it will be forced to move upward along the inside of the external docking member, and the movable resistance member forms a traction movable structure with the docking piston member through the traction rope.

[0013] Furthermore, the docking fitting piston member is in mutual fit with the inner side of the preset cavity, and the docking fitting piston member forms an elastic support structure along the inner side of the external docking member through a second spring, and the lower end of the docking fitting piston member is fixedly connected with a docking fixing rod.

[0014] Furthermore, the auxiliary positioning structure is provided with a first airbag, and the first airbag is adhesively connected to the inner wall of the external docking piece, and a first air supply hose passes through the lower end of the first airbag, and the first air supply hose passes through the inside of the external docking piece.

[0015] Further, the upper end of the docking and positioning suction cup assembly is docked with a nested movable part, and the nested movable part is docked at the bottom of the external docking part, a reserved docking groove is opened on the inner side of the lower end of the docking and positioning suction cup assembly, and a preset fitting part is nested and installed on the inner side of the reserved docking groove, and a second air bag is docked on the outer side of the upper end of the preset fitting part, and the second air bag is connected to the first air supply hose;

[0016] The outer side of the docking positioning suction cup assembly is bonded with a resistance support airbag, and the outer side of the resistance support airbag is docked with a second air supply hose, and the second air supply hose passes through the interior of the external docking component, and the inner side of the lower end of the external docking component is bonded with a preset airbag, and the preset airbag and the second air supply hose are connected to each other, and the lower end of the preset airbag is docked with an auxiliary support component.

[0017] Furthermore, when the docking fitting piston member is forced to move inward, it simultaneously drives the docking fixing rod to move inward to apply pressure to the contacting first airbag, and the first airbag applies pressure to expand the inside of the two groups of second airbags docked at the lower end through the first air supply hose.

[0018] Furthermore, when the second airbag expands, it pushes the preset fitting part of the docking to move upward along the inner side of the docking positioning suction cup assembly, and then performs a semi-vacuum evacuation treatment on the interior of the docking positioning suction cup assembly in a sealed state, thereby increasing its positioning stability. The docking positioning suction cup assembly forms a movable structure along the lower end of the external docking part by nesting the movable parts, and the nested movable parts are spherical when viewed from the front.

[0019] Furthermore, when the upper end of the docking positioning suction cup assembly is tilted due to force, pressure is applied to the outer contact support airbag, causing it to supply air to the interior of the preset airbag through the second air supply hose, causing it to expand and push the auxiliary support piece to move outward to provide auxiliary support.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The noise reduction computer provided with a limit support structure is provided with an auxiliary noise reduction structure. It only needs to dock the external docking piece with the computer mainframe through the guide nesting piece, so that the movable resistance piece at the front end of the external docking piece can contact the ground. After the movable resistance piece falls to the ground, it will be forced to move upward along the inside of the external docking piece. The movable resistance piece will drive the docking fitting piston piece to pump air inward along the inside of the external docking piece through the traction rope to perform negative pressure treatment, so that the pressure between the external docking piece in a sealed state and the computer mainframe changes, forming a certain vacuum preset cavity state, so that the noise generated by the computer mainframe during operation is retained in the vacuum preset cavity, reducing the divergent noise, and performing noise reduction treatment while protecting the outside of the computer mainframe, thereby improving the practicality of the device.

[0022] Furthermore, an auxiliary positioning structure is provided. When the overall external docking piece is installed by moving down along the outside of the computer mainframe through the counterweight piece, the four docking positioning suction cup assemblies at the bottom thereof will contact the ground and be efficiently positioned. When the docking fitting piston piece is forced to move inward, it will synchronously drive the docking fixing rod to move inward to apply pressure to the first airbag in contact. The first airbag will apply pressure to the inside of the two groups of second airbags docked at the lower end through the first air supply hose to expand. When the second airbag expands, it will push the docking preset fitting piece to move upward along the inside of the docking positioning suction cup assembly, thereby performing a semi-vacuum evacuation treatment on the inside of the docking positioning suction cup assembly in a sealed state, thereby increasing the positioning stability between the multiple groups of positioning suction cup assemblies and the ground.

[0023] Furthermore, when the entire computer host comes into contact with external force or is hit by the user's legs, it will be stably positioned by means of multiple sets of movable support-type docking positioning suction cup assemblies at the lower end of the external docking piece, and the docking positioning suction cup assembly forms an adaptive movable pressure relief support structure along the lower end of the external docking piece by nesting movable parts. When the docking positioning suction cup assembly is angularly deflected at the upper end due to force, pressure will be applied to the resistance support airbag in contact with the outside, so that air will be supplied to the interior of the preset airbag through the second air supply hose, causing it to expand and push the auxiliary support piece to move outward to provide auxiliary support, thereby quickly positioning the movable computer host and the external docking piece auxiliary support, thereby improving the flexibility of use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of the external docking piece of the present invention;

[0026] Figure 3 It is a schematic diagram of the three-dimensional structure of the guide nesting member of the present invention;

[0027] Figure 4It is a schematic diagram of a half-section three-dimensional structure of an external docking piece of the present invention;

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the butt-jointed piston member of the present invention;

[0029] Figure 6 For the present invention Figure 5 A schematic diagram of the partially enlarged structure;

[0030] Figure 7 It is a schematic diagram of the three-dimensional structure of the first air supply hose of the present invention;

[0031] Figure 8 It is a schematic diagram of a half-section three-dimensional structure of a computer host of the present invention.

[0032] In the figure: 1. computer host; 2. external docking part; 3. guide nesting part; 4. movable conflicting part; 5. first spring; 6. traction rope; 7. docking fitting piston part; 8. second spring; 9. preset cavity; 10. docking fixing rod; 11. first air bag; 12. docking positioning suction cup assembly; 13. reserved docking groove; 14. nested movable part; 15. preset fitting part; 16. first air supply hose; 17. second air bag; 18. conflicting support air bag; 19. second air supply hose; 20. preset air bag; 21. auxiliary support part. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figure 1-8 The present invention provides the following technical solutions: A noise reduction computer with a limit support structure, comprising a computer host 1, an external docking member 2, a guide nesting member 3, a movable conflicting member 4, a first spring 5, a traction rope 6, a docking fitting piston member 7, a second spring 8, a preset cavity 9, a docking fixing rod 10, a first airbag 11, a docking positioning suction cup assembly 12, a reserved docking groove 13, a nested movable member 14, a preset fitting member 15, a first air supply hose 16, a second airbag 17, a conflicting support airbag 18, a second air supply hose 19, a preset airbag 20, and an auxiliary support member 21;

[0035] A computer host 1 and an external docking piece 2, wherein the external docking piece 2 is installed on the outside of the computer host 1; a guide nesting piece 3 is fixed on the upper end of the external docking piece 2, and the external docking piece 2 is nested and docked with the computer host 1 through the guide nesting piece 3, and a counterweight block is arranged at the lower end of the external docking piece 2, a preset cavity 9 is opened on the inner side of the external docking piece 2, and an auxiliary noise reduction structure is arranged inside the external docking piece 2, and the external noise generated by the computer host 1 is isolated by the auxiliary noise reduction structure;

[0036] The auxiliary noise reduction structure is provided with a movable resistance member 4, and the movable resistance member 4 is nested and docked inside the external docking member 2, and a first spring 5 is fixedly connected between the upper end of the movable resistance member 4 and the external docking member 2, a docking fitting piston member 7 is nested and installed inside the preset cavity 9, and the docking fitting piston member 7 is docked with the inside of the external docking member 2, and a second spring 8 is fixedly connected between the docking fitting piston member 7 and the external docking member 2, and a traction rope 6 is docked inside the docking fitting piston member 7, and the traction rope 6 runs through the inside of the external docking member 2, and the end of the traction rope 6 is docked with the outside of the movable resistance member 4. After the movable resistance member 4 falls to the ground, it will be forced to move upward along the inside of the external docking member 2, and the movable resistance member 4 forms a traction movable structure with the docking fitting piston member 7 through the traction rope 6. The docking fitting piston member 7 fits with the inner side of the preset cavity 9, and the docking fitting piston member 7 forms an elastic support structure along the inner side of the external docking member 2 through the second spring 8, and the lower end of the docking fitting piston member 7 is fixedly connected with a docking fixing rod 10. After the user docks the external docking member 2 to the computer host 1 through the guide nesting member 3, the movable resistance member 4 at the front end of the external docking member 2 can be allowed to contact the ground, and after the movable resistance member 4 falls to the ground, it will be forced to move upward along the inside of the external docking member 2, and the movable resistance member 4 will drive the docking fitting piston member 7 to evacuate negative pressure along the inner side of the external docking member 2 through the traction rope 6, so that the pressure between the external docking member 2 and the computer host 1 in the sealed state changes, forming a certain vacuum preset cavity 9 state, so that the noise generated by the computer host 1 during operation is retained inside the vacuum preset cavity 9, reducing its divergent noise, while protecting the outer side of the computer host 1, performing noise reduction processing;

[0037] Embodiment 2: Based on Embodiment 1, an auxiliary positioning structure is also disclosed, and its specific structure is as follows:

[0038] A docking positioning suction cup assembly 12 is installed at the lower end of the external docking component 2, and an auxiliary positioning structure is provided between the docking positioning suction cup assembly 12 and the external docking component 2, through which the computer host 1 is positioned when it contacts external force.

[0039] The auxiliary positioning structure is provided with a first airbag 11 , and the first airbag 11 is bonded to the inner wall of the external docking piece 2 , and a first air supply hose 16 passes through the lower end of the first airbag 11 , and the first air supply hose 16 passes through the inside of the external docking piece 2 . The upper end of the docking and positioning suction cup assembly 12 is docked with a nested movable part 14, and the nested movable part 14 is docked at the bottom of the external docking part 2, a reserved docking groove 13 is opened on the inner side of the lower end of the docking and positioning suction cup assembly 12, and a preset fitting part 15 is nested and installed on the inner side of the reserved docking groove 13, and a second air bag 17 is docked on the outer side of the upper end of the preset fitting part 15, and the second air bag 17 is connected to the first air supply hose 16; a resistance support air bag 18 is bonded to the outer side of the docking and positioning suction cup assembly 12, and a second air supply hose 19 is docked on the outer side of the resistance support air bag 18, and the second air supply hose 19 passes through the inside of the external docking part 2, a preset air bag 20 is bonded to the inner side of the lower end of the external docking part 2, and the preset air bag 20 is connected to the second air supply hose 19, and the lower end of the preset air bag 20 is docked with an auxiliary support part 21. When the integral external docking member 2 is installed by moving down along the outer side of the computer host 1 through the counterweight, the four docking positioning suction cup assemblies 12 at the bottom thereof will contact with the ground for efficient positioning. When the docking fitting piston member 7 is forced to move inward, it will simultaneously drive the docking fixing rod 10 to move inward to apply pressure to the first airbag 11 in contact. The first airbag 11 will apply pressure to the inside of the two groups of second airbags 17 docked at the lower end through the first air supply hose 16 to expand. When the second airbag 17 expands, it will push the docking preset fitting member 15 to move upward along the inner side of the docking positioning suction cup assembly 12, and then perform a semi-vacuum evacuation treatment on the inside of the docking positioning suction cup assembly 12 in a sealed state, thereby increasing the positioning stability between the multiple groups of docking positioning suction cup assemblies 12 and the ground.

[0040] When the docking fitting piston 7 is forced to move inward, it simultaneously drives the docking fixing rod 10 to move inward to apply pressure to the first airbag 11 in contact, and the first airbag 11 applies pressure to the inside of the two sets of second airbags 17 docked at the lower end through the first air supply hose 16 to expand. When the second airbag 17 expands, it pushes the docking preset fitting part 15 to move upward along the inner side of the docking positioning suction cup assembly 12, and then performs a semi-vacuum evacuation treatment on the inside of the docking positioning suction cup assembly 12 in a sealed state to increase its positioning stability, and the docking positioning suction cup assembly 12 forms a movable structure along the lower end of the external docking part 2 through the nested movable part 14, and the nested movable part 14 is spherical when viewed from the front. When the docking and positioning suction cup assembly 12 has an angle deviation at the upper end due to force, pressure is applied to the outer contact support airbag 18, so that air is supplied to the inside of the preset airbag 20 through the second air supply hose 19, so that it expands and pushes the auxiliary support member 21 to move outward for auxiliary support; when the overall computer host 1 is exposed to external force or the user's legs collide, it will be stably positioned by multiple groups of movable support docking and positioning suction cup assemblies 12 at the lower end of the external docking member 2, and the docking and positioning suction cup assembly 12 forms an adaptive movable pressure relief support structure along the lower end of the external docking member 2 through nested movable parts 14. When the docking and positioning suction cup assembly 12 has an angle deviation at the upper end due to force, pressure is applied to the outer contact support airbag 18, so that air is supplied to the inside of the preset airbag 20 through the second air supply hose 19, so that it expands and pushes the auxiliary support member 21 to move outward for auxiliary support, thereby quickly positioning the movable computer host 1 and the external docking member 2 auxiliary support, thereby improving the flexibility of use of the device.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A noise reduction computer provided with a limit support structure, comprising a computer host (1) and an external docking member (2), wherein the external docking member (2) is installed on the outside of the computer host (1); Features: A guide nesting piece (3) is fixed to the upper end of the external docking piece (2), and the external docking piece (2) is nested and docked with the computer host (1) through the guide nesting piece (3), and a counterweight block is arranged at the lower end of the external docking piece (2), a preset cavity (9) is opened on the inner side of the external docking piece (2), and an auxiliary noise reduction structure is arranged inside the external docking piece (2), and the external noise generated by the computer host (1) is isolated by the auxiliary noise reduction structure; A docking positioning suction cup assembly (12) is installed at the lower end of the external docking component (2), and an auxiliary positioning structure is provided between the docking positioning suction cup assembly (12) and the external docking component (2), and the auxiliary positioning structure is used to perform positioning processing on the computer host (1) when it contacts external force.

2. A noise reduction computer with a limit support structure according to claim 1, characterized in that: The auxiliary noise reduction structure is provided with a movable resistance member (4), and the movable resistance member (4) is nested and docked on the inner side of the external docking member (2), and a first spring (5) is fixedly connected between the upper end of the movable resistance member (4) and the external docking member (2), and a docking fitting piston member (7) is nested and installed on the inner side of the preset cavity (9), and the docking fitting piston member (7) is docked with the inner side of the external docking member (2), and a second spring (8) is fixedly connected between the docking fitting piston member (7) and the external docking member (2), and a traction rope (6) is docked on the inner side of the docking fitting piston member (7), and the traction rope (6) passes through the inside of the external docking member (2), and the end of the traction rope (6) is docked with the outer side of the movable resistance member (4).

3. A noise reduction computer with a limit support structure according to claim 2, characterized in that: After the movable resistance member (4) falls to the ground, it will be forced to move upward along the inside of the external docking member (2), and the movable resistance member (4) forms a traction movable structure with the docking fitting piston member (7) through the traction rope (6).

4. The noise reduction computer with a position-limiting support structure according to claim 3, characterized in that: The butt-fitting piston member (7) is fitted with the inner side of the preset cavity (9), and the butt-fitting piston member (7) forms an elastic support structure along the inner side of the external butt-fitting member (2) through a second spring (8), and a butt-fitting fixing rod (10) is fixedly connected to the lower end of the butt-fitting piston member (7).

5. The noise reduction computer with a position-limiting support structure according to claim 4, characterized in that: The auxiliary positioning structure is provided with a first airbag (11), and the first airbag (11) is bonded to the inner wall of the external docking piece (2), and a first air supply hose (16) passes through the lower end of the first airbag (11), and the first air supply hose (16) passes through the inside of the external docking piece (2).

6. The noise reduction computer with a position-limiting support structure according to claim 5, characterized in that: The upper end of the docking and positioning suction cup assembly (12) is docked with a nested movable part (14), and the nested movable part (14) is docked with the bottom of the external docking part (2); a reserved docking groove (13) is provided on the inner side of the lower end of the docking and positioning suction cup assembly (12), and a preset fitting part (15) is nested and installed on the inner side of the reserved docking groove (13), and a second air bag (17) is docked on the outer side of the upper end of the preset fitting part (15), and the second air bag (17) is connected to the first air supply hose (16); The outer side of the docking positioning suction cup assembly (12) is bonded with a resistance support airbag (18), and the outer side of the resistance support airbag (18) is docked with a second air supply hose (19), and the second air supply hose (19) passes through the inside of the external docking component (2), the inner side of the lower end of the external docking component (2) is bonded with a preset airbag (20), and the preset airbag (20) and the second air supply hose (19) are connected to each other, and the lower end of the preset airbag (20) is docked with an auxiliary support component (21).

7. The noise reduction computer with a position-limiting support structure according to claim 6, characterized in that: When the docking fitting piston member (7) is forced to move inward, it simultaneously drives the docking fixing rod (10) to move inward to apply pressure to the first airbag (11) in contact, and the first airbag (11) applies pressure to expand the inside of the two sets of second airbags (17) docked at the lower ends through the first air supply hose (16).

8. The noise reduction computer with a position-limiting support structure according to claim 7, characterized in that: When the second airbag (17) expands, it pushes the preset fitting part (15) of the docking to move upward along the inner side of the docking positioning suction cup assembly (12), thereby performing a semi-vacuum evacuation treatment on the inside of the docking positioning suction cup assembly (12) in a sealed state, thereby increasing its positioning stability. In addition, the docking positioning suction cup assembly (12) forms a movable structure along the lower end of the external docking part (2) through the nested movable part (14), and the nested movable part (14) is spherical when viewed from the front.

9. The noise reduction computer with a position-limiting support structure according to claim 8, characterized in that: When the upper end of the docking positioning suction cup assembly (12) is tilted due to force, pressure is applied to the outer contact support airbag (18), causing it to supply air to the inside of the preset airbag (20) through the second air supply hose (19), causing it to expand and push the auxiliary support member (21) to move outward to provide auxiliary support.

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