Deskside device folding and locking mechanism and desk side dining chair with same

Abstract

The utility model relates to the technical field of household products for infants, and discloses a folding and locking mechanism for a table-side device and a table-side dining chair with the folding and locking mechanism. The desk side device folding and locking mechanism comprises a body, sliding installation pieces are installed on the two sides of the body in a sliding mode respectively, flexible pulling pieces are connected to the pair of sliding installation pieces, and locking bias pressing pieces are installed between the sliding installation pieces and the body; the lower supporting pieces are installed on the two sides of the body respectively, the lower supporting pieces and the sliding installation pieces are installed in a one-to-one correspondence mode, one ends of the lower supporting pieces are rotationally connected with the sliding installation pieces, and jacking assemblies are installed at the other ends of the lower supporting pieces; and the locking assembly is installed on the body, the pair of sliding installation pieces is connected with flexible pulling pieces, and the ends, away from the sliding installation pieces, of the flexible pulling pieces are suitable for being arranged on the locking assembly in a winding mode. In the unlocking process, by unlocking the locking state of the locking assembly, automatic separation of the jacking assembly and the body can be achieved, unlocking is completed, and one-step unlocking is achieved.

Description

Technical Field

[0001] This utility model relates to the field of infant and toddler home furnishing products technology, specifically to a tableside device folding and locking mechanism and a tableside dining chair having the same. Background Art

[0002] A baby high chair is a seat used by babies when eating at a dining table. To prevent the height mismatch between the table and the chair from hindering the baby's eating movements, baby high chairs are usually designed to be fixed to and removed from the table. When in use, the chair is secured to the edge of the table, and after eating, the chair is removed from the edge of the table to ensure normal daily use of the table.

[0003] A baby table chair mainly consists of a seat and a main frame for fixing it to the tabletop. The seat is fixed to the upper part of the main frame. In the prior art, to avoid accidental unlocking due to misoperation, infant and toddler furniture products usually use a double-lock structure to lock the folding locking parts. Unlocking requires at least two operations to complete the unlocking process. Table chairs typically use clamps on both sides of the chair frame to fix the entire table chair to the edge of the table. This means that unlocking a baby table chair requires an adult to go to both sides of the table chair and perform multiple unlocking operations on both clamps to complete the unlocking process, which is inconvenient. Utility Model Content

[0004] In view of this, the present invention provides a tableside device folding and locking mechanism and a tableside dining chair having the same, so as to solve the problem of inconvenient unlocking and disassembly of baby tableside dining chairs in the prior art.

[0005] In a first aspect, this utility model provides a table edge device retraction and locking mechanism, comprising:

[0006] The main body has sliding mounting parts on both sides. The sliding mounting parts are adapted to slide between the retracted position and the unfolded position on the main body. Each pair of sliding mounting parts is connected to a flexible pulling part. A locking biasing part is installed between the sliding mounting parts and the main body. The locking biasing part is adapted to apply a biasing force to the sliding mounting parts as they slide from the unfolded position to the retracted position.

[0007] The lower support is provided in pairs and is installed on both sides of the main body. The lower support is installed in correspondence with the sliding mounting part. One end of the lower support is rotatably connected to the sliding mounting part, and the other end is equipped with a clamping component. When the sliding mounting part slides between the closed position and the unfolded position, the clamping component is adapted to move away from or towards the main body under the drive of the lower support rod. The clamping component and the main body are adapted to clamp and fix on the two opposite sides of the table body.

[0008] A locking component is installed on the main body. The end of the flexible pull member away from the sliding mounting member is connected to the locking component. The locking component has a locked state that locks the flexible pull member to restrict its movement, and an unlocked state that releases the flexible pull member.

[0009] The table-side device retraction and locking mechanism is installed on table-side devices such as dining chairs, which are used to cooperate with the table body. When locked, the table-side device retraction and locking mechanism pulls two flexible pull members simultaneously. During the movement of the flexible pull members, the sliding mounting member slides on the main body, causing the sliding mounting member to slide from the unfolded position to the retracted position. This causes the lower support member, which is rotatably connected to the sliding mounting member, to rotate, causing the clamping component to move towards the main body. This clamps the clamping component and the main body, fixing them to both sides of the table body. After the clamping component and the main body are fixed on both sides of the table body, the locking component changes from the unlocked state to the locked state to fix the flexible pull members and restrict their free movement. During unlocking, the locking component is switched from the locked state to the unlocked state, allowing the flexible pull member to move freely. Under the biasing force of the locking biasing component, the sliding mounting member is pushed from the unfolded position to the unfolded position, thereby causing one end of the lower support member to rotate. This causes the clamping component at the other end of the lower support member to move away from the main body, thus releasing the clamping force between the clamping component and the main body on the table, and separating the table edge device's closing and locking mechanism from the table body. By setting up a locking component and a flexible pull member, and using the flexible pull member to cooperate with a pair of sliding mounting members, and using the sliding mounting members to rotate and install with the lower support members respectively, the sliding mounting members can drive the end of the lower support member to move when they slide, thereby achieving the purpose of controlling the movement of the clamping components on a pair of lower support members with a single locking component. When locked, the locking component is operated to move the flexible pull member, which in turn drives the clamping components on the lower support members on both sides of the main body to move together, thus completing the locking. When unlocking, by releasing the locking component, the clamping components can be automatically separated from the main body under the action of the locking reset component, thus completing the unlocking without having to operate the two lower support members on both sides. This achieves one-step unlocking and greatly simplifies the unlocking and disassembly operation of the tableside device with the tableside device retraction and locking mechanism.

[0010] In one alternative embodiment, a connecting crank member is further included, one end of which is rotatably mounted on the sliding mounting member, and the other end of which is rotatably mounted on the lower support member.

[0011] The main body is fixedly equipped with a first limiting part and a second limiting part. The side of the connecting curved rod opposite to the lower support abuts against the first limiting part, and the side of the lower support opposite to the connecting curved rod abuts against the second limiting part. By installing the connecting curved rod, the rotation direction of the lower support is controlled during the sliding process of the sliding mounting part, thereby improving the stability of the lower support during its movement.

[0012] In one alternative embodiment, the connecting rod includes a first rod and a second rod that are fixedly connected. The first rod is rotatably mounted on a sliding mounting member, and the second rod is rotatably mounted on a lower support member. The first rod and the second rod are set at an angle.

[0013] In one optional embodiment, the lower support member has a curved structure. When the clamping assembly and the main body are clamped and fixed on the table, both ends of the lower support member are facing the main body, and the second abutment portion is located near the end of the lower support member that is rotatably connected to the sliding mounting member.

[0014] In one optional embodiment, a retaining tube assembly is provided on the main body, a sliding mount is slidably mounted on the retaining tube assembly, and a flexible pull member extends along the inner cavity of the retaining tubes. The sliding mount is provided with a mating mounting portion that penetrates the retaining tube assembly and extends into the inner cavity of the retaining tube assembly. The flexible pull member is connected to the mating mounting portion, and the retaining tube assembly is provided with a clearance opening for the sliding movement of the mating mounting portion. By embedding the flexible pull member within the retaining tube assembly, the stability of the flexible pull member's movement along the extension direction of the retaining tube assembly is improved.

[0015] In one alternative implementation, the locking component includes:

[0016] The mounting housing is fixedly installed on the main body;

[0017] A turntable component is installed inside a mounting housing. A winding shaft is fixedly installed on one side of the turntable component. The end of the flexible pull member away from the sliding mounting member is adapted to be wound around the winding shaft. The winding shaft is adapted to drive the sliding mounting member to slide between the closed position and the unfolded position by rotating to wind up or release the flexible pull member. The winding shaft is fixedly connected to the turntable component. A first snap-fit ​​part is provided on the side of the turntable component away from the winding shaft.

[0018] The operating knob is slidably connected to the turntable component along the axial direction. A second locking part is provided on the side of the operating knob facing the turntable component. The operating knob has a engaged state in which it moves toward the turntable component to engage with the first locking part and the second locking part so that the operating knob can drive the turntable component to rotate, and a disengaged state in which it moves away from the turntable component to separate the first locking part and the second locking part.

[0019] When the locking mechanism is engaged, moving the operating knob toward the turntable causes the first and second locking parts on the operating knob to engage, allowing the turntable and the winding shaft to rotate actively. When unlocking, pulling the operating knob outward removes the turntable from its position, allowing it to rotate under the biasing force of the locking biasing member, releasing the flexible pulling member from the winding shaft.

[0020] In one optional embodiment, a first abutment portion is provided on the inner wall of the mounting housing, and a second abutment portion is provided on the operating knob. A first abutment plane is provided on one side of the first abutment portion along the circumference of the operating knob, and a first clearance slope is provided on the other side. Similarly, a second abutment portion along the circumference of the operating knob is provided on one side of the second abutment portion, and a second clearance slope is provided on the other side. The first abutment plane is adapted to abut and limit contact with the second abutment plane, and the first clearance slope is adapted to clearance engagement with the second clearance slope. Through the engagement of the first and second abutment portions, the operating knob can only rotate in one direction when it approaches the turntable component, preventing rotation in the opposite direction, thereby ensuring the stability of the turntable component and the winding shaft in the locked state of the closing and locking mechanism.

[0021] In one optional embodiment, the locking assembly further includes an auxiliary positioning knob. The auxiliary positioning knob includes a rotating portion and an extended portion. The rotating portion is mounted on the mounting housing, and the extended portion is perpendicular to the rotating portion. The auxiliary positioning knob has a positioning state where the extended portion axially abuts against the operating knob to maintain the operating knob in a engaged state, and a release state where the extended portion is completely separated from the operating knob. By providing the auxiliary positioning knob, when the retraction locking mechanism is in the locked state, the operating knob is limited to the positioning state, preventing accidental separation of the operating knob from the turntable due to accidental touch, thus ensuring the stability of the retraction locking mechanism in the locked state.

[0022] In one optional embodiment, the clamping assembly includes a clamping member and a clamping slider. The clamping slider is slidably engaged with the lower support member, and the clamping member is rotatably connected to the clamping slider. When the clamping assembly and the main body are clamped on the upper and lower surfaces of the table, if the upper and lower surfaces of the table cannot be parallel to the upper surface of the clamping assembly, the table can automatically and completely abut against the main body under the clamping force. At the same time, the clamping member can automatically rotate around the clamping slider, thereby ensuring that the clamping member automatically maintains a tight clamping with the table, ensuring the stability of the clamping assembly and the main body when clamped with the table, and preventing safety risks caused by unstable clamping due to insufficient contact area between the table and the clamping assembly.

[0023] In one alternative implementation, the clamping assembly and the lower support are integral components.

[0024] Secondly, this utility model also provides a tableside dining chair with the tableside device retraction and locking mechanism described in this utility model. Since the tableside dining chair includes the tableside device retraction and locking mechanism, it has the same effect as the tableside device retraction and locking mechanism, and will not be described further here. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the table edge device retraction and locking mechanism provided in an embodiment of the present invention. Figure 1 To better display the structure beneath the main body, the table-side device's folding and locking mechanism is displayed upside down.

[0027] Figure 2 This is a schematic diagram of the structure in which the lower support member and the main body are installed together, according to an embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the internal structure of the locking component provided in an embodiment of the present invention.

[0029] Figure 4 A schematic diagram of the clamping assembly provided in an embodiment of this utility model.

[0030] Figure 5 This is a schematic diagram of the locking component provided in an embodiment of the present invention.

[0031] Figure 6 A schematic diagram of the auxiliary positioning knob provided in an embodiment of this utility model.

[0032] Figure 7 A schematic diagram of the operation knob provided in an embodiment of this utility model.

[0033] Figure 8 This is a schematic diagram of the mounting housing provided for an embodiment of the present invention.

[0034] Figure 9 This is a schematic diagram of the structure of the turntable component provided in an embodiment of the present invention.

[0035] Explanation of reference numerals in the attached drawings: 1. Body; 101. Dinner plate; 102. Enclosure pipe assembly; 1021. Connecting pipe; 1022. Backing pipe; 103. Sliding mounting component; 104. Locking biasing component; 105. Mating mounting part; 2. Lower support component; 3. Tightening assembly; 301. Tightening component; 302. Tightening slider; 4. Locking assembly; 401. Winding shaft; 402. Mounting housing; 4021. First abutment part; 403 4031. Turntable component; 404. First locking part; 405. Operating knob; 4041. Knob body; 4042. Drive gear; 4043. Second locking part; 4044. Second abutting part; 405. Auxiliary positioning knob; 4051. Rotating part; 4052. Extended part; 4053. Torsion spring; 5. Flexible pulling component; 6. Mounting box; 601. First limiting part; 602. Second limiting part; 7. Connecting crank component. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] The following is combined Figures 1 to 9 The following describes embodiments of the present invention.

[0038] Firstly, this utility model provides a tableside device folding and locking mechanism, which can be applied to devices installed on the edge of a table, such as tableside dining chairs. In this embodiment, taking a baby tableside dining chair as an example, the tableside device folding and locking mechanism includes a body 1, a lower support 2, and a locking assembly 4 for controlling the locking mechanism's overall movement.

[0039] A set of sliding mounting parts 103 are slidably mounted on both sides of the main body 1. Each pair of sliding mounting parts 103 is connected to a flexible pulling part 5. The sliding mounting parts 103 are adapted to slide between the retracted position and the unfolded position on the main body 1. A locking biasing part 104 is installed between the sliding mounting parts 103 and the main body 1. The locking biasing part 104 is adapted to apply a biasing force to the sliding mounting parts 103 as they slide from the unfolded position to the retracted position. A pair of lower support parts 2 are provided, respectively installed on both sides of the main body 1. The lower support parts 2 are installed one-to-one with the sliding mounting parts 103. One end of the lower support part 2 is rotatably connected to the sliding mounting part 103, and the other end is equipped with a clamping component 3. When the sliding mounting part 103 slides between the retracted position and the unfolded position, the clamping component 3 is adapted to move away from or towards the main body 1 under the drive of the lower support rod. The clamping component 3 and the main body 1 are adapted to clamp and fix them to the opposite sides of the table. The locking component 4 is mounted on the main body 1. The end of the flexible pull member 5 away from the sliding mount 103 is mounted on the locking component 4. The locking component has a locked state that locks the flexible pull member to restrict its movement, and an unlocked state that releases the flexible pull member.

[0040] The table-side device retraction and locking mechanism is installed on table-side devices such as dining chairs, which are used to cooperate with the table body. When locked, the table-side device retraction and locking mechanism pulls two flexible pull members simultaneously. During the movement of the flexible pull member 5, the sliding mounting member 103 slides on the body 1, causing the sliding mounting member 103 to slide from the unfolded position to the retracted position. This causes the lower support member 2, which is rotatably connected to the sliding mounting member 103, to rotate, causing the clamping component 3 to move towards the body 1. This clamps and fixes the clamping component 3 and the body 1 to both sides of the table body. After the clamping component 3 and the body 1 are fixed on both sides of the table body, the locking component 4 is switched from the unlocked state to the locked state to fix the flexible pull member and restrict its free movement. During unlocking, the locking component 4 is switched from the locked state to the unlocked state, allowing the flexible pull member to move freely. Under the biasing force of the locking biasing component 104, the sliding mounting component 103 is pushed from the unfolded position to the unfolded position, thereby causing one end of the lower support component 2 to rotate. This causes the clamping component 3 at the other end of the lower support component 2 to move away from the body 1, thereby removing the clamping force between the clamping component 3 and the body 1 on the table, and separating the table edge device retraction locking mechanism from the table. By setting the locking component 4 and the flexible pull member 5, and using the flexible pull member 5 to cooperate with and connect a pair of sliding mounting components 103, and using the sliding mounting components 103 to be rotatably installed with the lower support component 2 respectively, the sliding mounting component 103 can drive the end of the lower support component 2 to move when it slides, thereby achieving the purpose of controlling the movement of the clamping component 3 on a pair of lower support components 2 with one locking component 4. When locked, the operation of the locking component 4 causes the flexible puller to move, which in turn drives the clamping components 3 on the lower support members 2 on both sides of the main body 1 to move together, thus completing the locking. When unlocking, by releasing the locking state of the locking component 4, the clamping components 3 can be automatically separated from the main body 1 under the action of the locking reset component, thus completing the unlocking without having to operate the two lower support members 2 on both sides. This achieves one-step unlocking and greatly simplifies the unlocking and disassembly operation of the tableside device with the tableside device retraction and locking mechanism.

[0041] It should be further explained that, taking an infant table chair as an example, the main body 1 includes a tray 101 and a retaining tube assembly 102. The retaining tube assembly 102 includes a pair of connecting tubes 1021 and a U-shaped backrest tube 1022. The pair of connecting tubes 1021 are detachably mounted on the tray 101, and the two ends of the backrest tube are slidably mounted inside the connecting tubes 1021. The sliding mounting component 103 is a sliding tube sleeved on the connecting tubes 1021. In some other embodiments, the sliding mounting component 103 can also be a slider, roller, or other structure, with a sliding rail for the slider and a groove for the roller to roll, etc., provided on the main body 1.

[0042] The locking biasing component 104 can be an elastic reset component such as a spring or a torsion spring 4053, or it can be a mechanism such as a drive motor, a drive cylinder, or a drive electric cylinder. In this embodiment, the locking biasing component 104 is a spring.

[0043] In this embodiment, the lower support member 2 is a curved tube that is roughly U-shaped. In some other embodiments, the lower support member 2 can also be a solid rod, a V-shaped rod, a rod with grooves, a frame, or a plate structure.

[0044] In one embodiment, to improve the stability of the lower support member 2 during movement, a first limiting part and a second limiting part are fixedly installed on the main body. A connecting crank member 7 is also installed between the lower support member 2 and the connecting crank. One end of the connecting crank member 7 is rotatably installed on the sliding mounting member 103, and the other end is rotatably installed on the lower support member 2. The side of the connecting crank member 7 away from the lower support member 2 abuts against the first limiting part 601, and the side of the lower support member 2 away from the connecting crank member 7 abuts against the second limiting part 602. The rotation direction of the lower support member 2 during the sliding process of the sliding mounting member 103 is controlled by installing the connecting crank member 7.

[0045] Specifically, the connecting crank member 7 includes a first rod and a second rod fixedly connected. The first rod is rotatably mounted on the sliding mounting member 103, and the second rod is rotatably mounted on the lower support member 2. The first rod and the second rod are set at an angle. In this embodiment, the first rod and the second rod are in an approximately perpendicular obtuse angle state. A mounting box 6 is fixedly mounted on the body 1. One end of the lower support member 2, which is rotatably connected to the body 1, is installed in the mounting box 6. The bottom of the mounting box 6 is open so that the lower support member 2 can extend out of the mounting box 6. The first limiting part 601 is the inner sidewall of the mounting box 6 located on the side of the connecting crank member 7 away from the lower support member 2, and the second limiting part 602 is the bottom opening of the mounting box 6 located on the side of the lower support member 2 away from the connecting crank member.

[0046] In this embodiment, the lower support member 2 has a curved, roughly U-shaped structure. When the clamping component 3 and the body 1 are clamped and fixed on the table, both ends of the lower support member 2 are facing the body 1. The second abutting part 4044 is located near the end of the lower support member 2 that is rotatably connected to the sliding mounting part 103.

[0047] In this embodiment, the enclosure pipe assembly 102 includes a pair of connecting pipes 1021 and a U-shaped backing pipe 1022. A sliding mounting member 103 is slidably mounted on the connecting pipes 1021, and a flexible pulling member 5 extends along the inner cavity of the backing pipe 1022 and the connecting pipe 1021. The sliding mounting member 103 is provided with a mounting post serving as a mating mounting part 105. The mounting post penetrates the side wall of the connecting pipe 1021 and extends into the inner cavity of the connecting pipe 1021. The end of the pull rope serving as the flexible pulling member 5 is provided with a hook, which is hooked and connected to the mounting post. The connecting pipe 1021 is provided with a clearance opening for the sliding movement of the mating mounting part 105. The clearance opening extends along the length direction of the connecting pipe 1021. Under the cooperation of the mating mounting part 105 and the clearance opening, the sliding range of the sliding mounting member 103 on the connecting pipe 1021 is restricted. By embedding the flexible pull member 5 within the enclosure tube assembly 102, the stability of the flexible pull member 5 during its movement is improved along the extension direction of the enclosure tube assembly 102. In some other embodiments, the mounting part 105 may also be a protrusion, hanging ring, or other structure on the inner wall of the sliding tube, which serves as the sliding mounting member 103 and extends from the clearance opening toward the inner cavity of the connecting tube 1021.

[0048] In one embodiment, the locking component 4 includes a mounting housing 402, a turntable 403, and an operating knob 404. The mounting housing 402 fixes the turntable 403 onto the body 1. The turntable 403 is installed inside the mounting housing 402. A winding shaft is fixedly mounted on one side of the turntable. The end of the flexible pull member away from the sliding mounting member is adapted to be wound around the winding shaft. The winding shaft is adapted to drive the sliding mounting member to slide between the closed position and the unfolded position by rotating to wind up or release the flexible pull member. The winding shaft 401 is fixedly connected to the turntable 403. A first locking part 4031 is provided on the side of the turntable 403 facing away from the winding shaft 401. The operating knob 404 is slidably connected to the turntable 403 along the axial direction. A second engaging portion 4043 is provided on the side of the operating knob 404 facing the turntable 403. The operating knob 404 has a engaged state where it moves towards the turntable 403, causing the first engaging portion 4031 and the second engaging portion 4043 to engage and rotate, and a disengaged state where it moves away from the turntable 403, separating the first engaging portion 4031 from the second engaging portion 4043. In this embodiment, both the first engaging portion 4031 and the second engaging portion 4043 are toothed structures. In some other embodiments, the first engaging portion 4031 and the second engaging portion 4043 can be blocks, slots, or other structures.

[0049] When the locking mechanism is engaged, the operation knob 404 is moved toward the turntable 403, causing the first locking part 4031 and the second locking part 4043 on the operation knob 404 to engage. The operation knob 404 then drives the turntable 403 and the winding shaft to rotate actively. When unlocking, the operation knob 404 is pulled outward, causing the turntable 403 to lose the limit of the operation knob 404. The turntable 403 then rotates under the biasing force of the locking biasing member 104, releasing the flexible pulling member 5 from the winding shaft 401.

[0050] Furthermore, a first abutment portion 4021 is provided on the inner wall of the mounting housing 402, and a second abutment portion 4044 is provided on the operating knob 404. Along the circumference of the operating knob 404, one side of the first abutment portion 4021 has a first abutment plane, and the other side has a first clearance slope. Along the circumference of the operating knob 404, one side of the second abutment portion 4044 has a second abutment plane, and the other side has a second clearance slope. The first abutment plane is adapted to abut and limit contact with the second abutment plane, and the first clearance slope is adapted to clearance fit with the second clearance slope. Through the cooperation of the first abutment portion 4021 and the second abutment portion 4044, the operating knob 404, when close to the turntable component 403, can only rotate in one direction and cannot rotate in the opposite direction, thereby ensuring the stability of the turntable component 403 and the winding shaft 401 in the locked state of the closing and locking mechanism.

[0051] Specifically, the operating knob 404 includes a knob body 4041 and a drive gear 4042 fixedly installed inside the knob body 4041. A second engaging part 4043 is provided on the side of the drive gear 4042 facing the turntable 403. Three sets of second abutting parts 4044 are provided on the outer periphery of the drive gear 4042. A plurality of first abutting parts 4021 are continuously provided on the inner sidewall of the mounting housing 402.

[0052] Furthermore, the locking assembly 4 also includes an auxiliary positioning knob 405, which includes a rotating part 4051 and an extension part 4052. The rotating part 4051 is mounted on the mounting housing 402, and the extension part 4052 is arranged perpendicularly to the rotating part 4051. The auxiliary positioning knob 405 has a positioning state in which the extension part 4052 abuts against the operating knob 404 in the axial direction to keep the operating knob 404 in a cooperating state, and a release state in which the extension part 4052 is completely separated from the operating knob 404.

[0053] The sleeve, serving as the rotating part 4051, is mounted on the rotating column of the mounting housing 402 via a torsion spring 4053. Under the action of the torsion spring 4053, the extension part 4052 can maintain a pressed and positioned state against the operating knob 404 when no external force is applied. When the locking mechanism needs to be closed and unlocked, the extension part 4052 of the auxiliary positioning knob 405 needs to be rotated by external force to remove the extension part 4052 from the operating knob 404. Then, the operating knob 404 is pulled outward by external force to separate the operating knob 404 from the turntable 403, thereby resolving the limiting position of the operating knob 404 on the turntable 403. To prevent the operating knob 404 from moving outward too far and falling off, a limiting protrusion is provided on the mounting housing 402, and an inner folded edge is provided on the operating knob 404. The inner folded edge cooperates with the limiting protrusion to limit the maximum distance the operating knob 404 can be pulled outward. By setting an auxiliary positioning knob 405, when the closing and locking mechanism is in the locked state, the operation knob 404 is limited to the positioning state, which avoids the operation knob 404 from separating from the turntable 403 due to accidental touch, thus preventing the closing and locking mechanism from mis-locking and ensuring the stability of the closing and locking mechanism in the locked state.

[0054] In one embodiment, the clamping assembly 3 includes a clamping member 301 and a clamping slider 302. The clamping slider 302 is slidably engaged with the lower support member 2, and the clamping member 301 is rotatably connected to the clamping slider 302. When the clamping assembly 3 and the body 1 are clamped on the upper and lower surfaces of the table, if the upper and lower surfaces of the table cannot be parallel to the upper surface of the clamping assembly 3, the table can automatically and completely abut against the body 1 under the clamping force. At the same time, the clamping member 301 can automatically rotate around the clamping slider 302, thereby ensuring that the clamping member 301 automatically maintains a tight clamping with the table, ensuring the stability of the clamping assembly 3 and the body 1 when clamped with the table, and preventing safety risks caused by unstable clamping due to insufficient contact area between the table and the clamping assembly 3. In some other embodiments, the clamping assembly 3 may also have the lower support member 2 as an integral component.

[0055] According to an embodiment of this utility model, another aspect is provided: a tableside dining chair with the tableside device described in this utility model for retracting and locking. When installing the tableside dining chair on the edge of a dining table, by placing the plate 101 on the table, rotating the knob body 4041 drives the gear 4042 to rotate the winding shaft 401. The winding shaft 401 drives the pull rope, which serves as a flexible pull member 5, to wind up on the winding shaft 401, thereby causing the flexible pull member 5 to pull the slide tube, which serves as a sliding mounting member 103, to slide on the connecting tube 1021 of the body 1, overcoming the biasing force of the locking bias member 104, and sliding from the retracted position to the unfolded position. Under the abutment of the second limiting part 602, the end of the lower support member 2 connected to the sliding mounting member 103 rotates, causing the clamping component 3 at the other end to move towards the body 1, thereby clamping and installing it together with the body 1 on both sides of the table, completing the temporary installation on the table. After locking, because the second abutment part 4044 is provided on the outer peripheral wall of the drive gear 4042 inside the operating knob 404, the abutment plane on the second abutment part 4044 abuts and fixes to the first abutment plane on the first abutment part 4021 in the inner cavity of the mounting housing 402. This makes the knob body 4041, which is fixed to the drive gear 4042 inside the operating knob 404, only able to rotate in one direction, and unable to make the first abutment plane and the second abutment plane approach each other for rotation. At the same time, under the pressing force of the auxiliary positioning knob 405, the operating knob 404 can maintain the locked state of the turntable part 403, thereby restricting the rotation of the turntable part 403 and the winding shaft 401, keeping all parts inside the tableside device retractable and locked, and thus maintaining the locked state of the tableside device retractable and locked. During unlocking, the auxiliary positioning knob 405 is first rotated to release the clamping and fixing of the operating knob 404. Then, by pulling the operating knob 404 outward, the drive gear 4042 inside the operating knob 404 is separated from the turntable 403. At this time, the turntable 403 and the winding shaft 401 can rotate freely, and the pull rope 5, which is a flexible pulling member, is released from the winding shaft 401. Under the biasing force of the locking biasing member 104, the sliding mounting member 103 is driven to slide from the unfolded position to the retracted position. Under the action of the first limiting part 601, the connecting crank member 7 drives one end of the lower support member 2 to rotate while moving with the sliding mounting member 103, causing the clamping component 3 at the other end of the lower support member 2 to separate from the tabletop, thereby completing the one-button unlocking of the dining chair from the tabletop, which greatly simplifies the unlocking and disassembly operation of the dining chair.

[0056] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A tableside device retraction and locking mechanism, characterized in that, include: The main body (1) has sliding mounting parts (103) slidably mounted on both sides. The sliding mounting parts (103) are adapted to slide between a retracted position and an unfolded position on the main body (1). A flexible pulling part (5) is connected to each pair of sliding mounting parts (103). A locking biasing part (104) is installed between the sliding mounting parts (103) and the main body (1). The locking biasing part (104) is adapted to apply a biasing force to the sliding mounting parts (103) to slide from the unfolded position to the retracted position. A pair of lower support members (2) are provided and are respectively installed on both sides of the main body (1). One end of the lower support member (2) is rotatably connected to the sliding mounting member (103), and the other end is equipped with a clamping component (3). When the sliding mounting member (103) slides between the closed position and the unfolded position, the clamping component (3) is adapted to move away from or towards the main body (1) under the drive of the lower support member (2). The clamping component (3) and the main body (1) are adapted to be clamped and fixed on the two opposite sides of the table. A locking component (4) is installed on the body (1). The end of the flexible pull member (5) away from the sliding mount (103) is connected to the locking component (4). The locking component (4) has a locked state that locks the flexible pull member (5) to restrict the movement of the flexible pull member (5), and an unlocked state that releases the flexible pull member (5).

2. The table edge device retraction and locking mechanism according to claim 1, characterized in that, It also includes a connecting crank member (7), one end of which is rotatably mounted on the sliding mounting member (103), and the other end is rotatably mounted on the lower support member (2); The main body (1) is fixedly installed with a first limiting part (601) and a second limiting part (602). The side of the connecting curved rod (7) away from the lower support (2) abuts against the first limiting part (601), and the side of the lower support (2) away from the connecting curved rod (7) abuts against the second limiting part (602).

3. The table edge device retraction and locking mechanism according to claim 2, characterized in that, The connecting rod (7) includes a first rod and a second rod that are fixedly connected. The first rod is rotatably mounted on the sliding mounting member (103), and the second rod is rotatably mounted on the lower support member (2). The first rod and the second rod are set at an angle.

4. The table edge device retraction and locking mechanism according to claim 2 or 3, characterized in that, The lower support member (2) has a curved structure. When the clamping component (3) and the body (1) are clamped and fixed on the table, both ends of the lower support member (2) are set towards the body (1). The second limiting part (602) is set near the end of the lower support member (2) that is rotatably connected to the sliding mounting part (103).

5. The table edge device retraction and locking mechanism according to any one of claims 1 to 3, characterized in that, The main body (1) is provided with a enclosure pipe assembly (102), the sliding mounting member (103) is slidably mounted on the enclosure pipe assembly (102), the flexible pulling member (5) extends along the inner cavity of the enclosure pipe, the sliding mounting member (103) is provided with a mating mounting part (105), the mating mounting part (105) penetrates the enclosure pipe assembly (102) and extends into the inner cavity of the enclosure pipe assembly (102), the flexible pulling member (5) is connected to the mating mounting part, and the enclosure pipe assembly (102) is provided with a clearance opening for the sliding movement of the mating mounting part (105).

6. The table edge device retraction and locking mechanism according to any one of claims 1 to 3, characterized in that, The locking component (4) includes: The mounting housing (402) is fixedly mounted on the main body (1); A turntable component (403) is installed inside the mounting housing (402). A winding shaft (401) is fixedly installed on one side of the turntable component. The end of the flexible pull member (5) away from the sliding mounting member (103) is adapted to be wound around the winding shaft (401). The winding shaft (401) is adapted to drive the sliding mounting member (103) to slide between the closed position and the unfolded position by rotating to wind up or release the flexible pull member (5). A first snap-fit ​​portion (4031) is provided on the side of the turntable component (403) opposite to the winding shaft (401). An operating knob (404) is slidably connected to the turntable (403) along the axial direction. The side of the operating knob (404) facing the turntable (403) is provided with a second locking part (4043). The operating knob (404) has a engaged state in which it moves toward the turntable (403) to engage the first locking part (4031) and the second locking part (4043) so that the operating knob (404) can drive the turntable (403) to rotate, and a disengaged state in which it moves away from the turntable (403) to separate the first locking part (4031) and the second locking part (4043).

7. The table edge device retraction and locking mechanism according to claim 6, characterized in that, A first abutting part (4021) is provided on the inner side wall of the mounting housing (402), and a second abutting part (4044) is provided on the operating knob (404). A first abutting plane is provided on one side of the first abutting part (4021) along the circumference of the operating knob (404), and a first clearance slope is provided on the other side. A second abutting plane is provided on one side of the second abutting part (4044) along the circumference of the operating knob (404), and a second clearance slope is provided on the other side. The first abutting plane is adapted to abut and limit the second abutting plane, and the first clearance slope is adapted to clearance and cooperate with the second clearance slope.

8. The table edge device retraction and locking mechanism according to claim 6, characterized in that, The locking assembly (4) further includes an auxiliary positioning knob (405), which includes a rotating part (4051) and an extension part (4052). The rotating part (4051) is mounted on the mounting housing (402), and the extension part (4052) is perpendicular to the rotating part (4051). The auxiliary positioning knob (405) has a positioning state in which the extension part (4052) abuts against the operating knob (404) in the axial direction to keep the operating knob (404) in a cooperating state, and a releasing state in which the extension part (4052) is completely separated from the operating knob (404).

9. The table edge device retraction and locking mechanism according to any one of claims 1 to 3, characterized in that, The clamping assembly (3) includes a clamping member (301) and a clamping slider (302). The clamping slider (302) is slidably engaged with the lower support member (2), and the clamping member (301) is rotatably connected to the clamping slider (302). Alternatively, the clamping component (3) and the lower support component (2) may be an integral part.

10. A dining chair for use with a table, characterized in that, It has a table edge device retraction and locking mechanism as described in any one of claims 1 to 9.

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