A width-adjustable connecting piece and slide rail

Abstract

This invention discloses a width-adjustable connector and slide rail, including a fixed base, a movable block, a linkage component, and at least two studs. The studs are connected to the fixed base and the movable block. The movable block has an internal thread adapted to the stud, or has an internal thread adapted to the stud. Each stud and the movable block cooperate to form a helical transmission mechanism. At least two helical transmission mechanisms are connected by the linkage component. When one of the helical transmission mechanisms rotates, the linkage component can drive the movable block to move axially along the stud. This invention allows for width adjustment of the connector by adjusting the position of the movable block, further enabling width adjustment of the slide rail to accommodate the assembly of furniture and drawers of different installation sizes. The width adjustment operation of the slide rail is simple and convenient.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and in particular to a connector and slide rail with adjustable width. Background Technology

[0002] During the assembly of drawers with tables, cabinets, and other furniture via slide rails, manufacturing errors often result in the sliding rails on the sides of the drawer being too far apart from the fixed rails on the furniture. This leads to situations where the sliding rails are too loose or too tight. When pulling the drawer, if the slide rails are too loose, the drawer is prone to wobbling; if the slide rails are too tight, the drawer is prone to jamming, resulting in a poor user experience.

[0003] Besides the aforementioned manufacturing errors, for some standard cabinets, the outer width is generally fixed, but when the thickness of the boards used is different, the inner width of cabinets of the same specifications will vary, leading to difficulties in assembling drawer slides. For example, a cabinet with an outer width of 600mm may be assembled from boards with thicknesses of 16mm, 18mm, 20mm, 22mm, and 25mm, resulting in inner widths of 568mm, 564mm, 560mm, 556mm, and 550mm respectively. Due to the different installation widths between the cabinet and the drawers, different models and sizes of drawer slides need to be installed; otherwise, situations may arise where the drawer slides are too loose or too tight.

[0004] To reduce the requirements for machining dimensional accuracy and expand the adaptability of slide rail installation dimensions, Chinese utility model patent ZL201820807440.1 discloses an adjustable slide rail, which includes a mounting plate fixedly mounted on the lower rail and a fixing plate for fixed mounting on the cabinet. Bolts are connected to any position along the length of a long hole on the fixing plate or mounting plate to adjust the relative position of the mounting plate on the fixing plate along the length of the long hole. This prior art can adjust the relative distance between the mounting plate and the fixing plate according to the actual width of the cabinet and drawer to accommodate cabinets and drawers of different installation dimensions.

[0005] However, due to the considerable length of the mounting plate and the fixing plate, at least two sets of elongated holes and bolts are typically required to achieve a stable connection between them. The solution disclosed in Chinese invention patent number ZL201820807440.1 requires, in practical applications, the positions of different bolts within the elongated holes to be adjusted sequentially. Furthermore, to ensure drawer balance, the positions of the different bolts within the elongated holes must be kept as consistent as possible, making adjustment difficult. Additionally, the length of the elongated hole aligns with the width of the drawer, and the axial direction of the bolts passing through the elongated hole aligns with the height of the drawer. Since drawer height is generally small, operating the adjusting bolts in the drawer height direction leaves limited space, further increasing the difficulty of adjustment. Moreover, after loosening and adjusting the bolts within the elongated holes, they must be tightened again to ensure a stable connection between the mounting plate and the fixing plate, making the adjustment operation time-consuming. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a width-adjustable connector, the width of which can be adjusted by adjusting the position of the movable block, and the width adjustment operation is simple and convenient.

[0007] The technical problem to be solved by the present invention is to provide a width-adjustable slide rail, which can be adapted to the assembly of furniture and drawers of different installation sizes by adjusting the width of the slide rail, and the width adjustment operation of the slide rail is simple and convenient.

[0008] To solve the above-mentioned technical problems, the present invention provides a width-adjustable connector, including a fixed base, a movable block, a linkage component, and at least two studs. The studs are connected to the fixed base and the movable block. The movable block is provided with an internal thread that is adapted to the studs, or has an internal thread adapted to the studs. Each stud cooperates with the internal thread or the movable block to form a helical transmission mechanism.

[0009] At least two of the aforementioned screw drive mechanisms are connected by the aforementioned linkage;

[0010] When one of the screw transmission mechanisms rotates, the linkage can drive the movable block to move along the axial direction of the stud.

[0011] As an improvement to the above solution, a gear portion is formed on the internal threaded part or the stud part;

[0012] The linkage component is a synchronous belt, which has tooth surfaces adapted to the gear section, and the synchronous belt is sleeved on the gear section; or

[0013] The linkage component is a linkage gear, which is disposed between two adjacent gear sections and meshes with the gear section.

[0014] As an improvement to the above solution, the two ends of the stud are a driving end and a linkage end, respectively. The driving end of the stud passes through the fixed seat and is threadedly connected to the internal thread or the movable block itself. The linkage end of the stud forms a gear part connected to the linkage.

[0015] When the drive end of the stud rotates, the linkage connected to the gear drives other studs to rotate synchronously, causing the movable block to move along the axial direction of the stud.

[0016] As an improvement to the above solution, the fixed seat is provided with a first transmission cavity on the side away from the movable block, and the gear part of the linkage member and the linkage end of the stud member are both arranged in the first transmission cavity.

[0017] The linkage component is a synchronous belt. The first transmission cavity is provided with a tensioning block and a second slide groove for accommodating the tensioning block. One end of the tensioning block abuts against the synchronous belt. The fixed seat is provided with a first tightening adjustment component at the other end of the tensioning block, which extends into the second slide groove and abuts against the tensioning block.

[0018] As an improvement to the above solution, the internal threaded part is a nut with a polygonal outer contour, and the movable block is provided with a polygonal groove that matches the outer contour of the nut, and the nut is locked in the polygonal groove.

[0019] As an improvement to the above solution, the movable block is provided with a second transmission cavity, and the internal threaded part and the linkage part are both disposed in the second transmission cavity. The internal threaded part is formed with a gear part connected to the linkage part, and a drive part is disposed on the opening side of the second transmission cavity.

[0020] One end of the stud is fixed to the fixed base or formed on the fixed base, and the other end extends into the second transmission cavity and is threadedly connected to the internal threaded component;

[0021] When the drive unit that drives the internal threaded component rotates, the linkage component connected to the gear unit drives other stud components to rotate synchronously, causing the movable block to move along the axial direction of the stud component.

[0022] As an improvement to the above solution, the movable block includes a movable block body and a cover, the second transmission cavity is formed on the movable block body, the cover is fixedly connected to the movable block body, and the linkage abuts against the cover.

[0023] As an improvement to the above solution, the fixed base is provided with a sliding assembly cavity adapted to the movable block;

[0024] The sidewalls at both ends of the movable block are provided with a first hook, a first guide groove and a second guide groove. The first guide groove and the second guide groove are respectively provided on both sides of the first hook and extend along the axial direction of the stud. The cavity wall of the sliding assembly cavity is provided with a first rib that slides with the first guide groove, a second rib that slides with the second guide groove, and a first sliding groove that slides with the first hook. The end of the first sliding groove is provided with a first limiting protrusion for abutting against the first hook.

[0025] The edge of the movable block is provided with a slot, and the edge of the sliding assembly cavity is provided with a second limiting protrusion that matches the slot.

[0026] As an improvement to the above solution, a viewing window is provided at one end of the fixed base, and a scale is provided on the side of the viewing window arranged in an array along the axial direction of the stud. The length direction of the scale is opposite to the viewing window, and an indicator mark is provided on the movable block. The indicator mark remains within the viewing window range when the movable block moves along the axial direction of the stud.

[0027] In addition, the present invention also discloses a width-adjustable slide rail, which includes a slide rail body and the aforementioned width-adjustable connector, wherein the slide rail body is fixed to the movable block.

[0028] Implementing this invention has the following beneficial effects:

[0029] This invention connects a fixed base and a movable block via at least two studs. The movable block has an internal thread adapted to the stud, or has an internal thread adapted to the stud. Each stud, in conjunction with the internal thread or the movable block, forms a helical transmission mechanism. At least two of these helical transmission mechanisms are connected by a linkage. When the stud or internal thread of one helical transmission mechanism rotates, the linkage drives the studs or internal threads of the other helical transmission mechanisms to rotate, causing the movable block to move axially along the stud. This creates displacement between the movable block and the fixed base. The movable block moves smoothly and steadily along the axial direction of the stud without tilting or jamming, allowing for convenient adjustment of the connector width.

[0030] By adjusting the position of the movable block relative to the fixed seat along the axial direction of the stud, the width of the slide rail can be adjusted to accommodate the assembly of furniture and drawers of different installation sizes.

[0031] Since the position adjustment between the fixed seat and the movable block only requires rotating one of the studs or internal threaded parts to move the movable block as a whole, it is not necessary to adjust multiple screw transmission mechanisms separately, nor is it necessary to move the studs laterally. During the adjustment process, it is not necessary to loosen and then tighten the studs or internal threaded parts, making the adjustment convenient and quick.

[0032] In addition, the axial direction of the stud is aligned with the width direction of the drawer, providing a larger operating space for rotating the stud or internal thread during assembly and adjustment, making it more convenient to operate. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of an embodiment of a width-adjustable connector according to the present invention;

[0034] Figure 2 yes Figure 1 A schematic diagram of the decomposed structure;

[0035] Figure 3 yes Figure 2 A schematic diagram of the structure of an internally threaded component;

[0036] Figure 4 This is a schematic diagram of an embodiment of an adjustable width slide rail according to the present invention;

[0037] Figure 5 yes Figure 4 A schematic diagram of the decomposed structure;

[0038] Figure 6 yes Figure 4 A schematic diagram of the assembly of the width-adjustable slide rail and the fixed panel;

[0039] Figure 7 yes Figure 6 Schematic diagram of the AA section structure;

[0040] Figure 8 yes Figure 4 Side view;

[0041] Figure 9 This is a schematic diagram of the end structure of the movable block;

[0042] Figure 10 This is a schematic diagram of the end structure of the fixed base. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0044] like Figure 1 and Figure 2As shown, this invention discloses an embodiment of a width-adjustable connector, including a fixed base 1', a movable block 2', a linkage 3', and at least two studs 4'. The studs 4' are connected to the fixed base 1' and the movable block 2'. The sidewall of the stud 4' is provided with an external thread. The movable block 2' is provided with an internal threaded part 5', or has an internal thread adapted to the stud 4'. The internal threaded part 5' is provided with an internal thread adapted to the stud 4'. Each stud 4' cooperates with the internal threaded part 5' or the movable block 2' to form a helical transmission mechanism. At least two helical transmission mechanisms are connected through the linkage 3'. When one of the helical transmission mechanisms rotates, the linkage 3' can drive the movable block 2' to move along the axial direction of the stud 4'.

[0045] In this embodiment, the fixed base 1' and the movable block 2' are connected by at least two studs 4'. The movable block 2' has an internal thread 5' that matches the stud 4', or has an internal thread that matches the stud 4'. Each stud 4' cooperates with the internal thread 5' or the movable block 2' to form a helical transmission mechanism. At least two helical transmission mechanisms are connected by the linkage 3'. When the stud 4' or internal thread 5' of one of the helical transmission mechanisms rotates, the linkage 3' can drive the stud 4' or internal thread 5' of the other helical transmission mechanisms to rotate, thereby causing the movable block 2' to move along the axial direction of the stud 4'. This creates displacement between the movable block 2' and the fixed base 1'. The movable block 2' will not tilt or jam during the axial movement along the stud 4', and can move smoothly and steadily along the axial direction of the stud, realizing convenient adjustment of the width of the connector. Since the position adjustment between the fixed seat 1' and the movable block 2' only requires rotating one of the studs 4' or the internal threaded part 5', the movable block 2' can be moved as a whole. There is no need to adjust multiple screw transmission mechanisms separately, nor is it necessary to move the studs 4' laterally. During the adjustment process, there is no need to loosen and tighten the studs 4' or the internal threaded part 5', making the adjustment convenient and quick.

[0046] Specifically, the movable block 2' includes a movable block body 21' and a cover 22'. The movable block body 21' has a second transmission cavity 211'. The cover 22' is fixedly connected to the movable block body 21'. The internal threaded component 5' and the linkage component 3' are both disposed within the second transmission cavity 211', and the linkage component 3' abuts against the cover 22'. Figure 3The internal threaded component 5' has a gear portion 51' connected to the linkage component 3' and a drive portion 52' disposed on the opening side of the second transmission cavity 211'; one end of the stud component 4' is fixed to the fixed seat 1' or formed on the fixed seat 1', and the other end extends into the second transmission cavity 211' and is threadedly connected to the internal threaded component 5'; when the drive portion 52' of the internal threaded component 5' is driven to rotate, the linkage component 3' connected to the gear portion 51' drives the other stud components 4' to rotate synchronously, so that the movable block 2' moves along the axial direction of the stud component 4'.

[0047] In this embodiment, one end of the stud 5' is provided with a fixed end with a polygonal cross-sectional outer contour, and the fixed seat 1' is provided with a polygonal slot that matches the fixed end. The fixed end of the stud 5' is engaged in the polygonal slot.

[0048] The cover 22' is provided with a through hole corresponding to the internal threaded component 5'. The driving part 52' of the internal threaded component 5' is provided with protruding teeth that can extend into the through hole along the circumferential arrangement of the internal threaded hole. During adjustment, the driving part 52' of the internal threaded component 5' is inserted into an external tool with a slot that matches the protruding teeth. By rotating the external tool, the internal threaded component 5' is driven to rotate. The internal threaded component 5' and the linkage 3' push the movable block 2' to move axially along the stud component 4', thereby adjusting the relative position of the movable block 2' and the fixed seat 1', that is, adjusting the width of the connecting component.

[0049] The linkage 3' can be a synchronous belt 3' or a linkage gear. When the linkage 3' is a synchronous belt 3', the synchronous belt 3' is fitted onto the gear portion 51' of the internal threaded component 5', and the synchronous belt 3' has tooth surfaces adapted to the gear portion 51'. When the linkage 3' is a linkage gear, the linkage gear is disposed between the gear portions 51' of two adjacent internal threaded components 5' and meshes with the gear portions 51'. The linkage gear can be multiple meshing gear components.

[0050] In addition, the invention also discloses an embodiment of a width-adjustable slide rail, including a slide rail body and the aforementioned width-adjustable connector. The slide rail body is fixedly connected to the movable block 2'. By adjusting the position of the movable block 2' relative to the fixed seat 1' along the axial direction of the stud 4', the width of the slide rail can be adjusted, which can adapt to the assembly of furniture and drawers with different installation sizes.

[0051] Since the axial direction of the stud 4' is consistent with the width direction of the drawer, there is a larger operating space for rotating the stud 4' or the internal threaded part 5' during assembly and adjustment, making it more convenient to operate.

[0052] like Figures 4 to 8As shown, this invention discloses another embodiment of a width-adjustable slide rail, including a slide rail body 1, a fixed base 2, a movable block 3, and at least two stud members 4; the fixed base 2 is provided with a sliding assembly cavity 21 and a first transmission cavity 22 respectively disposed on both sides, the sliding assembly cavity 21 is adapted to the movable block 3, the movable block 3 is fixed to the slide rail body 1 and movably disposed in the sliding assembly cavity 21; the two ends of the stud member 4 are a driving end and a linkage end respectively, the driving end is rotatably disposed on the fixed base 2 and threadedly connected to the movable block 3 to form a helical transmission mechanism, the linkage end extends into the first transmission cavity 22; the first transmission cavity 22 is provided with a linkage member 5 connected to the linkage ends of at least two of the stud members 4, the linkage member 5 drives the other stud members 4 to rotate synchronously when one of the stud members 4 rotates, so that the movable block 3 moves along the axial direction of the stud members 4.

[0053] In this embodiment, the fixed base 2 and the movable block 3 are connected by at least two studs 4. The driving end of the stud 4 is rotatably connected to the fixed base 2 and threadedly connected to the movable block 3. When the stud 4 is driven to rotate, the movable block 3 moves along the axial direction of the stud 4, thereby creating displacement between it and the fixed base 2. The linkage end of the stud 4 is connected to the linkage ends of other studs 4 through a linkage 5. Driving one stud 4 to rotate will drive the other studs 4 to rotate synchronously, allowing the movable block 3 to move relative to the fixed base 2 as a whole. The movable block 3 will not tilt or jam during the axial movement along the stud 4, and can move smoothly. The slide rail moves smoothly along the axial direction of the stud 4, allowing for convenient adjustment of the slide rail width. By adjusting the width of the slide rail, it can accommodate the assembly of furniture and drawers of different installation sizes. Since the position adjustment between the fixed base 2 and the movable block 3 only requires rotating one of the stud 4 to move the movable block 3 as a whole, it is not necessary to adjust multiple stud 4 individually or move the stud 4 laterally. During the adjustment process, there is no need to loosen and tighten the stud 4 and the movable block 3, making the adjustment convenient and quick. Furthermore, since the axial direction of the stud 4 is consistent with the width direction of the drawer, there is a large operating space for rotating the stud 4 during assembly and adjustment, making the operation more convenient.

[0054] To facilitate the rotation of the drive stud 4, the end face of the drive end of the stud 4 is provided with a slotted groove or a cross groove to facilitate the power input of external tools.

[0055] The linkage end of the stud 4 has a gear portion 41. The linkage 5 can be a synchronous belt 5 or a linkage gear. When the linkage 5 is a synchronous belt 5, the synchronous belt 5 is sleeved on the gear portion 41 of the stud 4, and the synchronous belt 5 has tooth surfaces adapted to the gear teeth. When the linkage 5 is a linkage gear, the linkage gear is disposed between the gear portions 41 of two adjacent studs 4 and meshes with the gear portions 41. The linkage gear can be multiple meshing gear components.

[0056] The movable block 3 in this embodiment specifically includes a movable block body 31 and an internal threaded component 32. The movable block body 31 is provided with a polygonal slot 311 that is adapted to the internal threaded component 32, and the internal threaded component 32 is engaged in the polygonal slot. The fixed base 2 is provided with a sleeve 23 that protrudes into the sliding assembly cavity 21.

[0057] The stud 4 can be threaded to the sleeve 23 and the internal thread 32 respectively through threads with opposite directions. At this time, the movable block 3 and the fixed seat 2 move towards each other or away from each other as the stud 4 rotates.

[0058] The drive end can also be sleeved inside the sleeve 23, rotating relative to the fixed seat 2 without producing axial displacement, and only threadedly connected to the internal threaded part 32. In this case, the linkage gear will not produce axial displacement, and the transmission between it and the synchronous belt 5 will be more stable.

[0059] To ensure effective transmission between the linkage gear at the linkage end of the stud 4 and the synchronous belt 5, a tensioning block 6 and a second sliding groove 24 for accommodating the tensioning block 6 are provided in the first transmission cavity 22. One end of the tensioning block 6 abuts against the synchronous belt 5, and the fixing seat 2 has a first tightening adjustment member 7 extending into the second sliding groove 24 and abutting against the tensioning block 6 at the other end of the tensioning block 6. A positioning groove 25 is provided in the first transmission cavity 22, and the synchronous belt 5 is disposed in the positioning groove 25. The gear portion 41 of the stud 4 is disposed at both ends of the positioning groove 25. A third limiting protrusion 26 corresponding to the first tightening adjustment member 7 is provided in the positioning groove 25. Guide posts 27 are respectively provided on both sides of the third limiting protrusion 26. One side wall of the synchronous belt 5 abuts against the guide post 27, and the other side wall abuts against the tensioning block 6.

[0060] The first adjusting member 7 can drive the tensioning block 6 to move within the second slide groove 24, thereby changing the pressure applied by the tensioning block 6 to the synchronous belt 5 and further changing the tension of the synchronous belt 5.

[0061] Combination Figure 9 and Figure 10In this embodiment, the side walls at both ends of the movable block body 31 are provided with a first hook 312, a first guide groove 313 and a second guide groove 314. The first guide groove 313 and the second guide groove 314 are respectively located on both sides of the first hook 312. The cavity wall of the sliding assembly cavity 21 is provided with a first protruding rib 211 that slides with the first guide groove 313, a second protruding rib 212 that slides with the second guide groove 314, and a first sliding groove 213 that slides with the first hook 312. The end of the first sliding groove 213 is provided with a first limiting protrusion 214 for abutting against the first hook 312. When the stud 4 rotates, the first protrusion 211 and the second protrusion 212 slide in engagement with the first guide groove 313 and the second guide groove 314 respectively, and the first hook 312 slides in engagement with the first sliding groove 213. When the first hook 312 abuts against the first limiting protrusion 214, it restricts the stud 4 from continuing to rotate in the direction that can drive the movable block 3 to move away from the first transmission cavity 22.

[0062] In this embodiment, a slot 315 is provided on the edge of the movable block body 31, and a second limiting protrusion 215 adapted to the slot 315 is provided on the edge of the sliding assembly cavity 21, which together with the first hook 312 and the first limiting protrusion 214 play a dual limiting role.

[0063] To facilitate real-time acquisition of size adjustment information, a viewing window 28 is provided at one end of the fixed base 2. A scale is arranged in an array along the axial direction of the stud 4 on the side of the viewing window 28. The length direction of the scale is opposite to the viewing window 28. An indicator mark is provided on the movable block body 31. The indicator mark is an arrow pointing to the scale. The indicator mark remains within the range of the viewing window 28 when the movable block 3 moves along the axial direction of the stud 4.

[0064] The adjustable-width connector in this embodiment also includes a cover plate 8 that partially covers the sliding assembly cavity 21. The cover plate 8 is located on the inner edge of the sliding assembly cavity 21 and is engaged with the fixed seat 2.

[0065] The fixed base 2 is provided with a second locking adjustment member 9 that extends into the sliding assembly cavity 21 and abuts against the movable block 3. The second locking adjustment member 9 is arranged parallel to the first locking adjustment member 7. When the size is adjusted to the correct position, the second locking adjustment member 9 is driven to abut against the movable block 3, so that the fixed base 2 and the movable block 3 remain stable and prevent the drawer from shaking during use.

[0066] Furthermore, this invention also discloses an embodiment of furniture with drawers, comprising a drawer (not shown in the figure), a fixed panel 10, and the aforementioned width-adjustable slide rail. The fixed base 2 is fixed to the fixed panel, and the slide rail body 1 includes a fixed rail 11 and a movable rail 12. The fixed rail 11 is fixed to the movable block 3, and the movable rail 12 is fixed to the drawer. The movable rail can be single-section, double-section, or multi-section.

[0067] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A width-adjustable connector, characterized in that, It includes a fixed base, a movable block, a linkage component, and at least two studs. The studs are connected to the fixed base and the movable block. The movable block has an internal thread that is adapted to the studs, or has an internal thread adapted to the studs. Each stud cooperates with the internal thread or the movable block to form a helical transmission mechanism. At least two of the aforementioned screw drive mechanisms are connected by the aforementioned linkage; When one of the screw transmission mechanisms rotates, the linkage can drive the movable block to move along the axial direction of the stud. The stud has a driving end and a linkage end at its two ends. The driving end of the stud passes through the fixed seat and is threadedly connected to the internal thread or the movable block itself. The linkage end of the stud has a gear portion connected to the linkage. When the drive end of the stud rotates, the linkage connected to the gear part drives other studs to rotate synchronously, causing the movable block to move along the axial direction of the stud. The fixed base is provided with a first transmission cavity on the side away from the movable block, and the gear part of the linkage component and the linkage end of the stud component are both arranged in the first transmission cavity. The linkage component is a synchronous belt. The first transmission cavity is provided with a tensioning block and a second slide groove for accommodating the tensioning block. One end of the tensioning block abuts against the synchronous belt. The fixed seat is provided with a first tightening adjustment component at the other end of the tensioning block, which extends into the second slide groove and abuts against the tensioning block.

2. The width-adjustable connector as described in claim 1, characterized in that, The internal threaded component is a nut with a polygonal outer contour. The movable block is provided with a polygonal slot that matches the outer contour of the nut, and the nut is engaged in the polygonal slot.

3. The width-adjustable connector as described in claim 1, characterized in that, The movable block is provided with a second transmission cavity. The internal threaded component and the linkage component are both disposed in the second transmission cavity. The internal threaded component has a gear portion connected to the linkage component and a drive portion disposed toward the opening side of the second transmission cavity. One end of the stud is fixed to the fixed base or formed on the fixed base, and the other end extends into the second transmission cavity and is threadedly connected to the internal threaded component; When the drive unit that drives the internal threaded component rotates, the linkage component connected to the gear unit drives other stud components to rotate synchronously, causing the movable block to move along the axial direction of the stud component.

4. The width-adjustable connector as described in claim 3, characterized in that, The movable block includes a movable block body and a cover. The second transmission cavity is formed on the movable block body. The cover is fixedly connected to the movable block body, and the linkage abuts against the cover.

5. The width-adjustable connector as described in claim 1, characterized in that, The fixed base is provided with a sliding assembly cavity adapted to the movable block; The sidewalls at both ends of the movable block are provided with a first hook, a first guide groove and a second guide groove. The first guide groove and the second guide groove are respectively located on both sides of the first hook and extend along the axial direction of the stud. The cavity wall of the sliding assembly cavity is provided with a first rib that slides with the first guide groove, a second rib that slides with the second guide groove, and a first sliding groove that slides with the first hook. The end of the first sliding groove is provided with a first limiting protrusion for abutting against the first hook. The edge of the movable block is provided with a slot, and the edge of the sliding assembly cavity is provided with a second limiting protrusion that matches the slot.

6. The width-adjustable connector as described in claim 1, characterized in that, A viewing window is provided at one end of the fixed base, and a scale is arranged in an array along the axial direction of the stud on the side of the viewing window. The length direction of the scale is opposite to the viewing window. An indicator mark is provided on the movable block. The indicator mark remains within the viewing window when the movable block moves along the axial direction of the stud.

7. A width-adjustable slide rail, characterized in that, It includes a slide rail body and a width-adjustable connector as described in any one of claims 1 to 6, wherein the slide rail body is fixedly connected to the movable block.

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