Rotating shaft sliding mechanism and adjustable supporting equipment

Abstract

According to the rotating shaft sliding mechanism and the adjustable supporting equipment, a rotating shaft assembly is installed on a sliding cover, when the sliding cover is driven by the force of an elastic piece to move along a guide strip, the rotating shaft assembly can be synchronously driven to move together, and the elastic piece and a limiting piece matched with the elastic piece are arranged between the sliding cover and the guide strip; therefore, coordination of the rotating function and the sliding function is achieved. The problems that in the prior art, supporting equipment is single in function, complex in structure and inconvenient to adjust are solved. Through a matching mechanism of the limiting piece, the stability of position locking is ensured, and the problem of loosening after long-term use is effectively prevented; meanwhile, when the user operates the limiting piece to release cooperation, the elastic piece can automatically drive the sliding cover to move, convenient adjustment is achieved, and continuous force application is not needed. The manufacturing process is simplified, the operation convenience and the use experience of the supporting equipment are remarkably improved, and the supporting equipment can provide a more flexible and accurate position adjusting function in various application scenes.

Description

Technical Field

[0001] This utility model relates to the field of rotating shaft equipment in mechanical engineering, and in particular to a rotating shaft sliding mechanism and an adjustable support device. Background Technology

[0002] Existing support devices typically only have a single rotation or sliding function. For example, common monitor stands can only adjust the screen angle or make simple height adjustments. These single-function support devices often require users to manually apply force to complete the position adjustment, and the adjustment process lacks smoothness and convenience. In addition, existing multi-functional support devices usually use a combination of independent rotation and sliding mechanisms, resulting in a complex overall structure, large size, and poor coordination between the various mechanisms.

[0003] Traditional sliding mechanisms typically rely on friction or simple slot structures to achieve fixed position, but these methods are prone to loosening and failure over time. When position adjustment is needed, users often need to operate the unlocking device with one hand while simultaneously adjusting the support device with the other, a cumbersome and inconvenient process. Especially when adjusting heavier objects, the lack of auxiliary elastic support makes the adjustment process laborious and difficult to control precisely. These problems severely impact user experience and limit the effectiveness of support devices in various application scenarios. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a rotating shaft sliding mechanism and an adjustable support device. The mechanism integrates the rotation function and the sliding function, and realizes the dual functions of position adjustment and stable positioning through the cooperation of elastic elements and limiting elements.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A rotating shaft sliding mechanism includes: a sliding assembly and a rotating shaft assembly; the sliding assembly includes a sliding cover and a guide bar that are slidably connected, and the rotating shaft assembly is mounted on the sliding cover; an elastic element is provided between the sliding cover and the guide bar, and mutually cooperating limiting elements are provided on the sliding cover and the guide bar respectively; when the limiting elements are engaged, the elastic element is compressed; when the limiting elements are disengaged, the elastic element unfolds, causing the sliding cover to move along the guide bar, and simultaneously driving the rotating shaft assembly to move together.

[0007] Furthermore, the limiting member includes a first limiting protrusion disposed on the sliding cover and a second limiting protrusion disposed on the guide strip; the first limiting protrusion protrudes toward the guide strip; the second limiting protrusion protrudes toward the sliding cover; the sum of the heights of the first limiting protrusion and the second limiting protrusion is greater than the interval distance between the sliding cover and the guide strip.

[0008] Furthermore, the first limiting protrusion is detachably connected to the sliding cover, and the first limiting protrusion has a first protrusion; the second limiting protrusion is integrally formed with the guide strip, and the second limiting protrusion has at least one second protrusion; the cross-sections of the first protrusion and the second protrusion are both arc-shaped.

[0009] Furthermore, the rotating shaft assembly includes a bearing seat, a shaft body, and a rotating component sleeved on the shaft body. The bearing seat is fixedly connected to the sliding cover, the shaft body is fixedly connected to the bearing seat, and the rotating component can rotate relative to the shaft body.

[0010] Furthermore, the rotating shaft assembly also includes a first washer, an elastic sheet, a second washer, and a fastener sequentially sleeved on the shaft body; the rotating component is located between the first washer and the shaft seat and is clamped and fixed; the fastener is used to make the elastic sheet apply pressure to the first washer, thereby realizing the adjustment of the rotational damping of the rotating component.

[0011] Furthermore, the rotating component is provided with a limiting protrusion; the first gasket is provided with a limiting groove along its circumference; the limiting protrusion slides within the limiting groove to limit the rotation angle range of the rotating component.

[0012] Furthermore, a pressure adjusting plate is provided between the rotating component and the bearing seat; the pressure adjusting plate is sleeved on the shaft and abuts against the bearing seat, and the pressure adjusting plate does not rotate relative to the shaft; the pressure adjusting plate has multiple pressure bosses on the side facing the rotating component; the rotating component has multiple mating grooves corresponding to the positions of the pressure bosses; the pressure bosses can fully mate with the mating grooves, and the connection between the pressure bosses and the pressure adjusting plate, as well as the edges of the mating grooves, are all arc-shaped; when the rotating component rotates, the mating grooves and the pressure bosses undergo relative displacement, generating pressure changes that adjust the resistance.

[0013] Furthermore, a stop portion is provided on the guide bar along the sliding direction of the sliding cover and near the elastic member; the stop portion protrudes in a direction perpendicular to the length of the guide bar; the stop portion is used to prevent the sliding cover from sliding when the limiting member is engaged.

[0014] Furthermore, the elastic element includes a central elastic portion and two elastic arms located on both sides of the elastic portion; the two elastic arms are respectively movably connected to the sliding cover and the guide bar, so that the elastic element can provide elastic support between the sliding cover and the guide bar.

[0015] An adjustable support device having the aforementioned rotating shaft sliding mechanism includes: a base and a functional part; one end of the sliding component away from the rotating shaft component is connected to the base, and the rotating shaft component is connected to the functional part; the functional part can rotate relative to a sliding cover via the rotating shaft component and can move relative to the base via the sliding component.

[0016] The beneficial effects of this utility model are:

[0017] The rotating shaft sliding mechanism provided by this utility model mounts the rotating shaft assembly on a sliding cover. When the sliding cover moves along the guide bar under the force of the elastic element, it can synchronously drive the rotating shaft assembly to move together. An elastic element and cooperating limiting elements are set between the sliding cover and the guide bar, thereby achieving coordinated rotation and sliding functions. This solves the problems of single function, complex structure, and inconvenient adjustment in existing support equipment. The cooperation mechanism of the limiting elements ensures the stability of the position locking and effectively prevents loosening after long-term use. Simultaneously, when the user operates the limiting elements to release the cooperation, the elastic element can automatically drive the sliding cover to move, achieving convenient adjustment without continuous force. This not only simplifies the manufacturing process but also significantly improves the ease of operation and user experience of the support equipment, enabling it to provide more flexible and precise position adjustment functions in various application scenarios. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a partial structural disassembly diagram of this utility model;

[0021] Figure 3 This is a disassembly diagram of the sliding component of this utility model;

[0022] Figure 4 This is a cross-sectional schematic diagram of the sliding component of this utility model;

[0023] Figure 5 This is a three-dimensional structural diagram of the rotating component and pressure regulating plate of this utility model - 1;

[0024] Figure 6 This is a three-dimensional structural diagram of the rotating component and pressure regulating plate of this utility model - 2.

[0025] in,

[0026] 100. Sliding assembly; 110. Sliding cover; 111. First limiting protrusion; 120. Guide bar; 121. Second limiting protrusion; 130. Stop; 140. Elastic element;

[0027] 200, Rotary shaft assembly; 210, Shaft seat; 220, Shaft body; 230, Pressure adjusting plate; 231, Pressure boss; 240, Rotating component; 241, Limiting protrusion; 242, Mating groove; 250, First gasket; 251, Limiting groove; 260, Elastic plate; 270, Second gasket; 280, Fastener. Detailed Implementation

[0028] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0029] Reference Figure 1 , Figure 2A rotating shaft sliding mechanism includes: a sliding assembly 100 and a rotating shaft assembly 200; the sliding assembly 100 includes a sliding cover 110 and a guide bar 120 slidably connected, and the rotating shaft assembly 200 is mounted on the sliding cover 110; an elastic element 140 is provided between the sliding cover 110 and the guide bar 120, and the sliding cover 110 and the guide bar 120 are respectively provided with mutually cooperating limiting elements. When the limiting elements are engaged, the elastic element 140 is compressed; when the limiting elements are disengaged, the elastic element 140 unfolds, causing the sliding cover 110 to move along the guide bar 120, and simultaneously driving the rotating shaft assembly 200 to move together. It is understood that an elastic element 140 is provided between the sliding cover 110 and the guide bar 120, and mutually cooperating limiting elements are provided on the sliding cover 110 and the guide bar 120 respectively. When these limiting elements cooperate, the elastic element 140 is in a compressed state; when the limiting elements are released, the compressed elastic element 140 automatically unfolds, thereby pushing the sliding cover 110 to move along the guide bar 120. At the same time, the pivot assembly 200 mounted on the sliding cover 110 also moves with the sliding cover 110. Taking a monitor stand as an example, when the user needs to adjust the monitor height, they only need to operate the limiting element to release it. At this time, the sliding cover 110 will automatically rise or fall to the appropriate position along the guide bar 120 under the push of the elastic element 140. The pivot assembly 200 of the monitor stand moves with the sliding cover 110, thereby adjusting the monitor height. At this time, the monitor stand is stable at the new height position, and the user can also adjust the tilt angle of the monitor through the pivot assembly 200.

[0030] The adjustable support device provided by this utility model adopts the aforementioned rotating shaft sliding mechanism and includes two main components: a base and a functional part. The end of the sliding component 100 away from the rotating shaft component 200 is connected to the base, while the rotating shaft component 200 is connected to the functional part. The functional part can be adjusted by rotating the rotating shaft component 200 relative to the sliding cover 110, and can also be adjusted by moving the sliding component 100 relative to the base, thereby realizing a multi-degree-of-freedom adjustment function. Taking a monitor stand as an example, the base can be placed stably on the desktop. One end of the guide bar 120 of the sliding component 100 is connected and fixed to the base, while the hinge component 200 installed on the sliding cover 110 is connected to the monitor (functional unit). When the user needs to adjust the height of the monitor, the limiting member can be operated to disengage it. At this time, the sliding cover 110 moves along the guide bar 120 under the push of the elastic member 140, causing the hinge component 200 and the connected monitor to rise or fall together. When the appropriate height is reached, the user can allow the limiting member to re-engage and fix the height position of the monitor. At the same time, the user can also adjust the tilt angle of the monitor through the hinge component 200, so that the monitor can be rotated to the most comfortable viewing angle, thereby realizing the dual adjustment function of height and angle.

[0031] In some embodiments, the functional unit can be a display screen, such as a computer monitor or television screen, allowing users to easily adjust the screen height and viewing angle via a hinge sliding mechanism for optimal viewing experience. The functional unit can also be a mobile device stand, such as a tablet or smartphone stand, allowing users to adjust the device's height and angle for video calls, watching videos, or reading e-books. The functional unit can also be a lighting device, such as a desk lamp or work lamp, with a hinge sliding mechanism enabling precise adjustment of the light source's position and illumination angle to meet the lighting needs of different scenarios. Furthermore, the functional unit can be a camera or monitoring device, allowing users to adjust the camera's height and angle for optimal shooting results. In industrial applications, the functional unit can be a robotic arm or tool holder, facilitating operators to adjust the tool's working position and angle, improving work efficiency.

[0032] In some embodiments, refer to Figure 1-3 A stop portion 130 is provided on the guide strip 120 along the sliding direction of the sliding cover 110, near the elastic member 140. The stop portion 130 protrudes along a direction perpendicular to the length of the guide strip 120. The stop portion 130 is used to prevent the sliding cover 110 from sliding when the limiting member is engaged. When the user engages the limiting member to lock the position, not only is the elastic member 140 compressed to provide a fixing force, but the stop portion 130 also forms a physical block with the sliding cover 110, further ensuring that the sliding cover 110 will not continue to slide along the guide strip 120.

[0033] In some embodiments, refer to Figure 1-2 The elastic element 140 includes a central elastic portion and two elastic arms located on either side of the elastic portion. The two elastic arms are movably connected to the sliding cover 110 and the guide strip 120, respectively, enabling the elastic element 140 to provide elastic support between the sliding cover 110 and the guide strip 120. It can be understood that the elastic element 140 includes a central elastic portion and two elastic arms located on either side of this elastic portion. The two elastic arms are movably connected to the sliding cover 110 and the guide strip 120, respectively. When the limiting member engages, the elastic element 140 is compressed, primarily storing elastic potential energy through the central elastic portion. When the limiting member disengages, the central elastic portion releases energy, transmitting force to the sliding cover 110 and the guide strip 120 through the elastic arms on both sides, pushing the sliding cover 110 to move along the direction of the guide strip 120. Specifically, a pin spring or a spring sheet can be selected here.

[0034] In some embodiments, refer to Figure 3-4The limiting member includes a first limiting protrusion 111 disposed on the sliding cover 110 and a second limiting protrusion 121 disposed on the guide strip 120; the first limiting protrusion 111 protrudes towards the guide strip 120; the second limiting protrusion 121 protrudes towards the sliding cover 110; the sum of the heights of the first limiting protrusion 111 and the second limiting protrusion 121 is greater than the distance between the sliding cover 110 and the guide strip 120. It is understood that the two protrusions can overlap and intersect in space, forming a physical barrier, thereby achieving the position locking function. The operating mechanism causes the first limiting protrusion 111 on the sliding cover 110 and the second limiting protrusion 121 on the guide strip 120 to intersect and engage. Since the sum of the heights of the two protrusions exceeds the distance between the sliding cover 110 and the guide strip 120, they will form a physical barrier perpendicular to the sliding direction, while simultaneously compressing the elastic element 140 to form a lock.

[0035] Furthermore, the first limiting protrusion 111 is detachably connected to the sliding cover 110, and the first limiting protrusion 111 has a first protrusion; the second limiting protrusion 121 is integrally formed with the guide strip 120, and the second limiting protrusion 121 has at least one second protrusion; the cross-sections of the first protrusion and the second protrusion are both arc-shaped. The first limiting protrusion 111 can be replaced or adjusted as needed, increasing the flexibility and maintainability of the device, while the integral formation of the second limiting protrusion 121 with the guide strip 120 improves the stability and durability of the structure. At the same time, the first limiting protrusion 111 has a first protrusion, and the second limiting protrusion 121 has at least one second protrusion, and the cross-sections of these protrusions are all designed to be arc-shaped. This arc-shaped design allows the two protrusions to slide more smoothly during mutual engagement and disengagement, reducing friction and wear. When operated by the user, the detachable first limiting protrusion 111 and its arc-shaped first protrusion on the sliding cover 110 cooperate with the integrally formed second limiting protrusion 121 and its arc-shaped second protrusion on the guide strip 120. When the two protrusions engage, the arc-shaped design minimizes the contact area and reduces sliding resistance, thus achieving a smoother locking and unlocking process. Furthermore, if the first limiting protrusion 111 wears down due to long-term use, the user can easily disassemble and replace it with a new one without replacing the entire sliding cover 110 assembly, greatly extending its service life. In addition, multiple second protrusions can be designed on the second limiting protrusion 121, providing the user with multiple locking position options and enabling stable locking at different heights to meet the needs of various usage environments.

[0036] In some embodiments, refer to Figure 2The rotating shaft assembly 200 includes a bearing seat 210, a shaft body 220, and a rotating component 240 sleeved on the shaft body 220. The bearing seat 210 is fixedly connected to the sliding cover 110, and the shaft body 220 is fixedly connected to the bearing seat 210. The rotating component 240 can rotate relative to the shaft body 220. Specifically, the bearing seat 210 is fixedly connected to the sliding cover 110 to ensure that the rotating shaft assembly 200 can move together with the sliding cover 110; the shaft body 220 is fixedly connected to the bearing seat 210 to provide stable support for the entire rotating system; and the rotating component 240 can rotate freely relative to the shaft body 220 to realize the angle adjustment of the functional parts. In use, the bearing seat 210 is securely connected to the sliding cover 110 and moves along the guide bar 120 with the sliding cover 110 to adjust the height. The shaft body 220 is fixed to the bearing seat 210, forming a central axis of rotation. The functional part is connected to the shaft body 220 via a rotating component 240. The user can manually rotate the functional part to rotate the rotating component 240 relative to the fixed shaft body 220, thereby adjusting the angle of the functional part. The height position can be adjusted via the sliding assembly 100, and the projection angle can be adjusted via the rotating shaft assembly 200, achieving a dual adjustment function.

[0037] Furthermore, the rotating shaft assembly 200 also includes a first washer 250, an elastic sheet 260, a second washer 270, and a fastener 280 sequentially sleeved on the shaft body 220; the rotating member 240 is located between the first washer 250 and the shaft seat 210 and is clamped and fixed; the fastener 280 is used to apply pressure from the elastic sheet 260 to the first washer 250, thereby realizing the adjustment of the rotational damping of the rotating member 240. The rotating member 240 is located between the first washer 250 and the shaft seat 210 and is clamped and fixed, while the fastener 280 is used to control the amount of pressure applied by the elastic sheet 260 to the first washer 250, thereby realizing the adjustment of the rotational damping of the rotating member 240. When fastener 280 is tightened, the pressure of elastic plate 260 on first washer 250 increases, and the friction between first washer 250 and rotating component 240 increases. Conversely, when fastener 280 is loosened appropriately, the pressure of elastic plate 260 on first washer 250 decreases, allowing rotating component 240 to rotate more easily. Users can adjust the appropriate rotational resistance according to different usage scenarios and personal preferences: a smaller rotational damping can be set in situations requiring frequent angle adjustments, while in fixed-use environments, the rotational damping can be increased to ensure stability.

[0038] Furthermore, refer to Figure 2The rotating member 240 is provided with a limiting protrusion 241; the first gasket 250 is provided with a limiting groove 251 along its circumference; the limiting protrusion 241 slides within the limiting groove 251 to limit the rotation angle range of the rotating member 240. It can be understood that when the rotating member 240 rotates, the limiting protrusion 241 will slide within the limiting groove 251. Once the limiting protrusion 241 touches both ends of the limiting groove 251, the rotating member 240 cannot continue to rotate, thereby effectively limiting the rotation angle range of the rotating member 240.

[0039] Furthermore, refer to Figure 2 , 5 6. A pressure adjusting plate 230 is provided between the rotating component 240 and the bearing seat 210; the pressure adjusting plate 230 is sleeved on the shaft body 220 and abuts against the bearing seat 210, and the pressure adjusting plate 230 does not rotate relative to the shaft body 220; the pressure adjusting plate 230 has multiple pressure bosses 231 on the side facing the rotating component 240; the rotating component 240 has multiple mating grooves 242 corresponding to the positions of the pressure bosses 231; the pressure bosses 231 can fully fit with the mating grooves 242, and the connection between the pressure bosses 231 and the pressure adjusting plate 230 and the edge of the mating grooves 242 are all arc-shaped; when the rotating component 240 rotates, the mating grooves 242 and the pressure bosses 231 undergo relative displacement, generating a pressure change that adjusts the resistance. Specifically, the pressure regulating plate 230 is sleeved on the shaft 220 and abuts against the shaft seat 210, remaining fixed and non-rotating relative to the shaft 220. Multiple pressure bosses 231 are designed on the side of the pressure regulating plate 230 facing the rotating component 240, while multiple mating grooves 242 are correspondingly provided on the rotating component 240, allowing for proper engagement. The connection between the pressure bosses 231 and the pressure regulating plate 230, as well as the edges of the mating grooves 242, are all designed with an arc shape. This arc-shaped structure allows for smooth pressure changes in the relative displacement between the mating grooves 242 and the pressure bosses 231 during the rotation of the rotating component 240, thereby achieving dynamic adjustment of the rotational resistance.

[0040] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A rotation shaft sliding mechanism characterized by comprising: include: Sliding components and hinge components; The sliding assembly includes a sliding cover and a guide bar that are slidably connected, and the rotating shaft assembly is mounted on the sliding cover; An elastic element is provided between the sliding cover and the guide bar. The sliding cover and the guide bar are respectively provided with mutually cooperating limiting elements. When the limiting elements are engaged, the elastic element is compressed. When the limiting elements are disengaged, the elastic element unfolds, causing the sliding cover to move along the guide bar, and at the same time driving the rotating shaft assembly to move together.

2. The rotating shaft sliding mechanism according to claim 1, characterized in that, The limiting component includes a first limiting protrusion disposed on the sliding cover and a second limiting protrusion disposed on the guide strip; The first limiting protrusion protrudes toward the guide bar; The second limiting protrusion protrudes towards the sliding cover; The combined height of the first limiting protrusion and the second limiting protrusion is greater than the distance between the sliding cover and the guide strip.

3. The rotating shaft sliding mechanism according to claim 2, characterized in that, The first limiting protrusion is detachably connected to the sliding cover, and the first limiting protrusion has a first protrusion. The second limiting protrusion is integrally formed with the guide strip, and the second limiting protrusion has at least one second protrusion. Both the first protrusion and the second protrusion have arc-shaped cross sections.

4. The rotating shaft sliding mechanism according to claim 1, characterized in that, The rotating shaft assembly includes a bearing seat, a shaft body, and a rotating component sleeved on the shaft body. The bearing seat is fixedly connected to the sliding cover, the shaft body is fixedly connected to the bearing seat, and the rotating component can rotate relative to the shaft body.

5. The rotating shaft sliding mechanism according to claim 4, characterized in that, The rotating shaft assembly also includes a first washer, an elastic sheet, a second washer, and fasteners sequentially sleeved on the shaft body; The rotating component is located between the first washer and the bearing seat and is clamped and fixed. The fastener is used to apply pressure to the first pad by the elastic sheet, thereby achieving adjustment of the rotational damping of the rotating component.

6. The rotating shaft sliding mechanism according to claim 5, characterized in that, The rotating component is provided with a limit protrusion; The first gasket has a limiting groove along its circumference; The limiting protrusion slides within the limiting groove to limit the rotation angle range of the rotating component.

7. The rotating shaft sliding mechanism according to claim 5, characterized in that, A pressure regulating plate is provided between the rotating component and the bearing seat; The pressure regulating plate is sleeved on the shaft and abuts against the shaft seat, and the pressure regulating plate does not rotate relative to the shaft. The pressure regulating plate has multiple pressure bosses on the side facing the rotating component; The rotating component is provided with multiple mating grooves corresponding to the positions of the pressure bosses; The pressure boss can fully fit with the mating groove, and the connection between the pressure boss and the pressure regulating piece, as well as the edge of the mating groove, are all arc-shaped. When the rotating component rotates, the mating groove and the pressure boss undergo relative displacement, resulting in a pressure change that adjusts the resistance.

8. The rotating shaft sliding mechanism according to claim 1, characterized in that, A stop is provided on the guide bar along the sliding direction of the sliding cover, near the elastic element; The stop portion protrudes along a direction perpendicular to the length of the guide bar; The stop portion is used to prevent the sliding cover from sliding when the limiting member is engaged.

9. The rotating shaft sliding mechanism according to claim 1, characterized in that, The elastic element includes a central elastic portion and two elastic arms located on both sides of the elastic portion; The two elastic arms are movably connected to the sliding cover and the guide bar, respectively, so that the elastic element can provide elastic support between the sliding cover and the guide bar.

10. An adjustable support apparatus having a pivot slide mechanism as claimed in any one of claims 1 to 9, characterised in that, include: Base and functional parts; The end of the sliding component away from the pivot assembly is connected to the base, and the pivot assembly is connected to the functional part; The functional unit can rotate relative to the sliding cover via the rotating shaft assembly, and can move relative to the base via the sliding assembly.

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