Cross beam assembly and working table

Abstract

The utility model discloses a crossbeam assembly and a work table, the crossbeam assembly comprises a connecting plate, two crossbeam bodies and two pinch roller assemblies, the two crossbeam bodies are respectively provided with a first combination surface and a second combination surface which are arranged along the length direction; the connecting plate is in sliding fit with the first combination face and the second combination face. The two pressing wheel assemblies are connected to the two cross beam bodies correspondingly, pressing wheels of the two pressing wheel assemblies are connected with the connecting plate in a pressed mode correspondingly, so that the connecting plate generates pre-tightening pressure on the first combination face and the second combination face, and the pre-tightening pressure is configured to enable the connecting plate to be pressed against the first combination face and the second combination face correspondingly. And any cross beam body can slide along the length direction relative to the connecting plate under the action of external force. When the length of the cross beam assembly is adjusted, tools are not needed, and operation is easy, labor-saving and rapid. By adopting the cross beam assembly, the mounting efficiency of the worktable can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of electric office furniture, and specifically relates to a crossbeam assembly and a worktable. Background Art

[0002] A worktable is also called a study table, a desk, etc. Its structure includes a tabletop, a crossbeam assembly, table legs and a base. The upper end of the table legs is connected to the crossbeam assembly, the lower end of the table legs is connected to the base, and the tabletop is installed on the top of the crossbeam assembly. In order to better meet the needs of users of different heights and different ages, most of the existing worktables are set as liftable lift tables, that is, the worktable can adjust its height according to the height, sitting posture and standing posture of people, so as to meet people's pursuit of a healthy office mode.

[0003] In order to make the length dimension of the crossbeam assembly adaptable to table tops of different length dimensions, facilitate assembly after purchase by users, and facilitate transportation and packaging to save costs; the crossbeam assemblies of related technology worktables are all set as telescopic types, such as the crossbeam assemblies adopted in the lift tables previously applied by the applicant of this case, such as the lift tables with the publication numbers of CN209711979U, CN210870326U or CN219306224U, etc. Its structure includes two crossbeam bodies that can move relative to each other for adjusting the length, a first crossbeam body and a second crossbeam body; either a connection seat is provided at the bottom between the first crossbeam body and the second crossbeam body, and the connection seat is respectively detachably connected to the bottom of the first crossbeam body and the bottom of the second crossbeam body through screws; the length of the crossbeam assembly is adjusted by adjusting the fixed positions of the first crossbeam body and the second crossbeam body in the length direction of the connection seat; either a connecting rod is provided between the first crossbeam body and the second crossbeam body, one end of the connecting rod is inserted into the inner hole of the first crossbeam body, and the other end of the connecting rod is inserted into the inner hole of the second crossbeam body. After the distance between the two crossbeam bodies is adjusted, the two ends of the connecting rod are respectively locked on the two crossbeam bodies through locking screws.

[0004] The above-mentioned crossbeam assemblies of related technology worktables generally have some deficiencies in the actual assembly process: after the length of the crossbeam assembly is adjusted, multiple screws need to be connected to fix the two crossbeam bodies and the connection seat or connecting rod in the middle of the two crossbeam bodies, and manual tools or electric tools must be used to tighten and fix the screws; and due to the limited installation level of users, the length of the crossbeam assembly often cannot be adjusted properly at one time, and the length of the crossbeam assembly needs to be measured or corrected multiple times. Therefore, the length adjustment operation of the crossbeam assembly is relatively troublesome, time-consuming and laborious; in addition, the table legs and support plates of the above-mentioned related technology worktables also need to be installed using screws, resulting in low assembly efficiency of the entire worktable and poor user experience. Content of the Utility Model

[0005] The technical problem to be solved by this application is to overcome the defects of the above related technologies and provide a crossbeam assembly that does not require tools during length adjustment, is simple, labor-saving, and fast in operation.

[0006] The technical solution of this application is to provide a crossbeam assembly with the following structure: including

[0007] Two crossbeam bodies, arranged in sequence along the length direction of the crossbeam assembly and relatively movable to adjust the length of the crossbeam assembly; the two crossbeam bodies respectively have a first joint surface and a second joint surface arranged along the length direction;

[0008] A connecting plate, extending along the length direction of the crossbeam assembly and slidingly fitting with the first joint surface and the second joint surface respectively;

[0009] Two pressing wheel assemblies, respectively connected to the two crossbeam bodies, and the pressing wheels of the two pressing wheel assemblies are respectively pressed against the connecting plate, used to generate a pre-tightening pressure on the first joint surface and the second joint surface, and the pre-tightening pressure is configured to press the connecting plate against the first joint surface and the second joint surface respectively, and enable any crossbeam body to slide along the length direction relative to the connecting plate under the action of an external force.

[0010] In some embodiments, each of the pressing wheel assemblies includes a bracket connected to the crossbeam body, and at least one of the pressing wheels is rotatably connected to the bracket, and the axis of the pressing wheel is perpendicular to the length direction of the connecting plate.

[0011] In some embodiments, two of the pressing wheels distributed along the length direction of the connecting plate are rotatably connected to the bracket of each of the pressing wheel assemblies.

[0012] In some embodiments, the pressing wheel is made of a soft elastic material.

[0013] In some embodiments, a receiving groove that is recessed downward and has an opening formed at the top of the crossbeam body is provided along the length direction at the top of each crossbeam body; the inner bottom walls of the receiving grooves of the two crossbeam bodies respectively form the first joint surface and the second joint surface; the connecting plate is respectively sleeved in the receiving grooves of the two crossbeam bodies.

[0014] In some embodiments, the bracket of the pressing wheel assembly is connected to the opening of the receiving groove of the crossbeam body, and the mounting end for mounting the pressing wheel on the bracket extends downward into the receiving groove.

[0015] In some embodiments, side plates that are slidingly fitted with the inner side walls of both sides of the receiving groove are respectively provided on both sides of the connecting plate; anti-detachment limiting portions that abut against the brackets are respectively provided at both ends of the connecting plate to prevent the connecting plate from falling off.

[0016] In some embodiments, the two pressing wheel assemblies are respectively connected to the inner ends of the two crossbeam bodies. <A

[0017] In summary, compared with the related art, a crossbeam assembly of the present application has the following advantages: The crossbeam assembly includes a connecting plate, two crossbeam bodies, and two pressing wheel assemblies. The two pressing wheel assemblies are respectively connected to the two crossbeam bodies, and the pressing wheels of the two pressing wheel assemblies are respectively pressed against the connecting plate, so as to generate a pre-tightening pressure on the first joint surface and the second joint surface of the two crossbeam bodies. Under this pre-tightening pressure, the connecting plate is respectively pressed against the first joint surface and the second joint surface, so that the two crossbeam bodies are fixed in position in the natural state. And when the user adjusts the length of the crossbeam assembly, only an external force in the length direction of the crossbeam needs to be applied to any one of the crossbeam bodies, and then the crossbeam body can slide out or retract relative to the connecting plate along the length direction. Therefore, when the user adjusts the length of the crossbeam assembly, only need to pull any one of the crossbeam bodies outwards or inwards to adjust the distance between the two crossbeam bodies, so as to adjust the length of the crossbeam assembly; furthermore, the pre-tightening pressure applied by the pressing wheel assembly on the connecting plate generates a frictional force between the connecting plate and the first joint surface and the second joint surface. Under the action of this frictional force, the two crossbeam bodies and the connecting plate are fixed in position in the natural state. Therefore, when adjusting the length of the crossbeam assembly, no manual or electric tools are needed. Just pull one of the crossbeam bodies outwards, the operation is simple, labor-saving, fast, saving the installation time of the table and meeting the user's need for quick assembly.

[0018] Another technical solution of the present application is to provide a workbench having the following structure: including a tabletop, a crossbeam assembly, a support plate, table legs, and a base, and the crossbeam assembly adopts the crossbeam assembly described in any one of the above embodiments.

[0019] In some embodiments, the crossbeam assembly has an installation space arranged along the length direction. The top end of the table leg is connected with a motor housing, and at least part of the motor housing is accommodated in the installation space. One end of the motor housing is provided with a plug hole, and the other end is provided with a hanging part; the support plate has a plug part inserted at the end of the crossbeam assembly, and the free end of the plug part is inserted into the plug hole of the motor housing; the workbench further includes a locking mechanism installed on the crossbeam assembly. The locking mechanism includes a handle part rotatably connected to the crossbeam assembly and a traction part rotatably connected to the handle part and hooked to the hanging part of the motor housing. The locking mechanism is used to drive the motor housing to move away from the support plate to a locking position; in the locking position, the locking mechanism applies a squeezing force to the motor housing and the plug part, so that the motor housing is fixed in the installation space and the support plate is fixed on the crossbeam assembly.

[0020] In summary, compared with the related art, a workbench of the present application has the following advantages: The workbench adopts the crossbeam assembly of the above embodiment. When adjusting the crossbeam assembly to be adapted to the length of the tabletop, under the cooperation of the pressing wheel assembly and the connecting plate, only one of the crossbeam bodies needs to be pulled outwards with force to a suitable position. When adjusting the length of the crossbeam assembly, no manual or electric tools are required, and the operation is simple, labor-saving, fast, saving the installation time of the table and accelerating the assembly efficiency of the workbench. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG. is a schematic structural diagram of a crossbeam assembly according to some embodiments of the present application.

[0022] Figure 2 FIG. is a schematic assembly structural diagram of a crossbeam assembly according to some embodiments of the present application.

[0023] Figure 3 FIG. is a schematic cross-sectional structural diagram of a crossbeam assembly according to some embodiments of the present application.

[0024] Figure 4 is Figure 3 an enlarged structural diagram of part A in

[0025] Figure 5 FIG. is a schematic structural diagram of a workbench according to some embodiments of the present application.

[0026] Figure 6 FIG. is a schematic assembly structural diagram of a workbench according to some embodiments of the present application.

[0027] Figure 7 is Figure 6 an enlarged structural diagram of part B in

[0028] Figure 8 FIG. is a schematic structural diagram of a locking mechanism of a workbench according to some embodiments of the present application.

[0029] Description of the Reference Numerals:

[0030] 1. Tabletop, 2. Crossbeam assembly, 200. First crossbeam body, 201. Second crossbeam body, 202. Installation space, 203. Slot, 204. Top plate, 205. Limit groove, 206. First joint surface, 207. Second joint surface, 208. Receiving groove, 3. Table leg, 300. Leg tube, 301. Motor housing, 302. Baffle, 303. Insertion hole, 304. Hanging part, 4. Base, 5. Support plate, 500. Insertion part, 501. Card slot, 6. Locking mechanism, 600. Traction part, 601. Handle part, 602. Rotating shaft, 603. Hanging rod, 604. Elastic part, 605. Positioning rod, 606. Guide hole, 7. Connecting plate, 700. Anti-disengagement limit part, 8. Pressing wheel assembly, 800. Bracket, 801. Pressing wheel. Detailed implementation manners

[0031] First of all, those skilled in the art should understand that these implementation manners are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios.

[0032] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0033] In the embodiments of the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0034] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] See Figures 1 to 4As shown; an embodiment of the present application discloses a crossbeam assembly, which can be used in furniture such as worktables, lifting tables or support platforms, and is installed at the bottom of the tabletop or countertop to play a supporting role; the crossbeam assembly includes two crossbeam bodies: a first crossbeam body 200 and a second crossbeam body 201. Both the first crossbeam body 200 and the second crossbeam body 201 are elongated members, arranged in sequence along the length direction of the crossbeam assembly 2 and can move relative to each other to adjust the length of the crossbeam assembly 2; in this embodiment, both crossbeam bodies are integrally bent and formed structures of metal plates, with simple structures, relatively light overall weights, convenient transportation and handling, and low costs.

[0036] In other embodiments, the crossbeam body can also be welded by two parallel square metal tubes.

[0037] Further in this embodiment, in order to facilitate the adjustment of the distance between the first crossbeam body 200 and the second crossbeam body 201, that is, to adjust the length of the crossbeam assembly 2; a first joint surface 206 is provided on the first crossbeam body 200 along the length direction, and a second joint surface 207 is provided on the second crossbeam body 201 along the length direction. It is not difficult to understand that the first joint surface 206 and the second joint surface 207 are planes in the same horizontal plane, that is, the outer surfaces of the two crossbeam bodies. A connecting plate 7 is arranged between the two crossbeam bodies, see Figure 1 and Figure 2 As shown, the connecting plate 7 is an elongated plate member extending along the length direction of the crossbeam assembly 2. The bottom of the connecting plate 7 is also a plane and is slidably attached to the first joint surface 206 and the second joint surface 207 respectively; that is, the bottom surface of the connecting plate 7 simultaneously abuts and contacts the first joint surface 206 and the second joint surface 207 of the two crossbeam bodies, and the two crossbeam bodies can slide along the length direction of the crossbeam assembly 2 relative to the connecting plate 7.

[0038] It is not difficult to understand that when the two crossbeam bodies move relative to the connecting plate 7 along the length direction of the crossbeam assembly 2 to adjust the length of the crossbeam assembly 2, if the force is uneven, the connecting plate 7 may be disengaged or dropped, thus affecting the length adjustment of the crossbeam assembly 2; in this embodiment, see Figure 2 As shown, the crossbeam assembly 2 further includes two pressure wheel assemblies 8. The two pressure wheel assemblies 8 are respectively connected to the two crossbeam bodies, and the pressure wheels 801 of the two pressure wheel assemblies 8 are respectively pressed against the connecting plate 7, for generating a pre-tightening pressure on the first joint surface 206 and the second joint surface 207 of the connecting plate 7. The pre-tightening pressure is configured to press the connecting plate 7 against the first joint surface 206 and the second joint surface 207 respectively, and enable any crossbeam body to slide along the length direction relative to the connecting plate 7 under the action of an external force.

[0039] Exemplarily, see Figure 1 、 Figure 2 、Figure 3 and Figure 4 As shown, the top of each crossbeam body is provided with a downwardly recessed receiving groove 208 along its length and with an opening formed at the top of the crossbeam body. Specifically, the crossbeam body of this embodiment is formed by bending a metal sheet in one piece, and thus the receiving groove 208 is formed by bending the metal sheet. The inner bottom walls of the receiving grooves 208 of the two crossbeam bodies respectively form a first bonding surface 206 and a second bonding surface 207. The connecting plates 7 are respectively mounted within the receiving grooves 208 of the two crossbeam bodies, and the bottoms of the connecting plates 7 are respectively aligned with the first bonding surface 206 and the second bonding surface 207. Two pressure roller assemblies 8 are respectively connected to the tops of the first crossbeam body 200 and the second crossbeam body 201, and the two pressure roller assemblies 8 are respectively located at the inner ends of the two crossbeam bodies.

[0040] It is not difficult to understand that the pressure wheel 801 of the pressure wheel assembly 8 is respectively pressed against the connecting plate 7, and the connecting plate 7 generates a pre-tightening pressure on the first joint surface 206 and the second joint surface 207, that is, when the pressure wheel assembly 8 is installed, the pressure wheel 801 of the pressure wheel assembly 8 is interference fit in the accommodating groove 208 and is pressed against the side of the connecting plate 7 away from the joint surface, so that there is a large friction force between the first joint surface 206 and the connecting plate 7 and between the second joint surface 207 and the connecting plate 7. The friction force can ensure that the beam assembly 2 remains fixed or locked in a natural state or a free state; if the pulling force applied to the first beam body 200 and / or the second beam body 201 is greater than the friction force, the beam body can slide relative to the connecting plate 7.

[0041] Further, in the above embodiment, the crossbeam assembly includes a connecting plate 7, two crossbeam bodies, and two pressing wheel assemblies 8. The two pressing wheel assemblies 8 are respectively connected to the two crossbeam bodies, and the pressing wheels 801 of the two pressing wheel assemblies 8 are respectively pressed against the connecting plate 7, so as to generate a pre-tightening pressure on the first joint surface 206 and the second joint surface 207 of the two crossbeam bodies. Under this pre-tightening pressure, the connecting plate 7 is respectively pressed against the first joint surface 206 and the second joint surface 207, so that the two crossbeam bodies are fixed in position in the natural state. And when the user adjusts the length of the crossbeam assembly 2, only an external force in the length direction of the crossbeam needs to be applied to any one of the crossbeam bodies, and the crossbeam body can slide out or retract along the length direction relative to the connecting plate 7. Therefore, when the user adjusts the length of the crossbeam assembly 2, only need to pull any one of the crossbeam bodies outward or inward to adjust the distance between the two crossbeam bodies, so as to adjust the length of the crossbeam assembly 2. Moreover, the pre-tightening pressure applied by the pressing wheel assembly 8 on the connecting plate 7 generates a frictional force between the connecting plate 7 and the first joint surface 206 and the second joint surface 207. Under the action of this frictional force, the two crossbeam bodies and the connecting plate 7 are fixed in position in the natural state. Therefore, when adjusting the length of the crossbeam assembly 2, no manual or electric tools are needed. Only need to overcome the frictional force between the connecting plate 7 and the joint surface, and then one of the crossbeam bodies can be pulled outwards, which is simple, labor-saving, fast, saves the installation time of the table, and meets the user's need for quick assembly.

[0042] The pressing wheel 801 in the above embodiment is preferably made of a soft elastic material, such as rubber. When the pressing wheel is in interference fit with the connecting plate 7, it has a certain elastic deformation ability, so that the connecting plate 7 is pressed more tightly against the first joint surface 206 and the second joint surface 207.

[0043] In some embodiments, such as Figure 2 and Figure 4 shown, on the premise of ensuring that the connecting plate 7 is pressed tightly against the first joint surface 206 and the second joint surface 207, in order to make the length adjustment of the crossbeam assembly 2 more convenient and labor-saving, each pressing wheel assembly 8 includes a bracket 800 connected to the crossbeam body, and at least one pressing wheel 801 is rotatably connected to the bracket 800. The axis of the pressing wheel 801 is perpendicular to the length direction of the connecting plate 7. When the length of the crossbeam assembly 2 is adjusted, the pressing wheel 801 can rotate by itself as the crossbeam body moves, so as to facilitate the movement of the crossbeam body and make the operation more labor-saving.

[0044] Exemplarily, such as Figure 2 、 Figure 3 and Figure 4As shown, two pressing wheels 801 distributed along the length direction of the connecting plate 7 are rotatably connected to the bracket 800 of each pressing wheel assembly 8, and the axes of the two pressing wheels 801 are parallel. The bracket 800 of the pressing wheel assembly 8 is connected to the opening of the receiving groove 208 of the crossbeam body by screws, and the mounting end of the bracket 800 for mounting the pressing wheel 801 extends downward into the receiving groove 208, so that the pressing wheel 801 mounted on the mounting end of the bracket 800 is in interference fit or press fit with the connecting plate 7.

[0045] Further in this embodiment, as Figure 2 shown, the connecting plate 7 is also integrally bent and formed from a metal plate, and its shape is adapted to the shape of the receiving groove 208 of the crossbeam body to prevent the connecting plate 7 from shifting during the movement of the crossbeam body; side plates that are slidably attached to the inner side walls of both sides of the receiving groove 208 are respectively provided on both sides of the connecting plate 7. This not only makes the cooperation between the connecting plate 7 and the crossbeam body more compact, but also further increases the friction force between the connecting plate 7 and the crossbeam body, realizing the position self-locking of the two crossbeam bodies in the natural state.

[0046] Further in this embodiment, as Figure 2 shown, anti-detachment limiting parts 700 that abut against the bracket 800 to prevent the connecting plate 7 from detaching are respectively provided at both ends of the connecting plate 7. The anti-detachment limiting parts 700 are bumps formed on the connecting plate 7 and extending into the receiving groove 208. Specifically in this embodiment, two bumps extending into the receiving groove 208 are respectively provided at the end parts of both side plates of the connecting plate 7. When the crossbeam body moves outward relative to the connecting plate to the extreme position, the bracket 800 of the pressing wheel assembly 8 on the crossbeam body abuts against the bumps at the end of the connecting plate 7 to prevent the connecting plate 7 from detaching from the crossbeam body, and the use safety is good.

[0047] Refer to Figures 5 to 8 shown; an embodiment of the present application discloses a worktable, including a tabletop 1, a crossbeam assembly 2, a support plate 5, table legs 3, and a base 4. The crossbeam assembly 2 adopts the crossbeam assembly of the above embodiment. This worktable can also be an ordinary worktable, that is, a worktable without a lifting function; it can also be an electric or manual lifting table with a lifting function. This worktable adopts the crossbeam assembly of the above embodiment. When adjusting the length of the crossbeam assembly to be adapted to the length of the tabletop 1, under the cooperation of the pressing wheel assembly 8 and the connecting plate 7, only one of the crossbeam bodies needs to be pulled outwards with force to the appropriate position. When adjusting the length of the crossbeam assembly 2, no manual or electric tools are required, the operation is simple, labor-saving, fast, saving the installation time of the table and accelerating the assembly efficiency of the worktable.

[0048] Further in this embodiment, this worktable is preferably an electric lifting worktable, as Figure 5 、 Figure 6 、 Figure 7 and Figure 8As shown, the end parts of the first crossbeam body 200 and the second crossbeam body 201 of the crossbeam assembly 2 of the workbench respectively have installation spaces 202 arranged along the length direction. The top end of the leg tube 300 of the table leg 3 is connected with a motor housing 301, and at least part of the motor housing 301 is accommodated in the installation space 202. One end of the motor housing 301 is provided with a plug hole 303, and the other end is provided with a hanging part 304; the support plate 5 has a plug part 500 inserted at the end of the crossbeam assembly 2, and the free end of the plug part 500 is inserted into the plug hole 303 of the motor housing 301.

[0049] Further in this embodiment, referring to Figure 6 and Figure 7 As shown, the support plate 5 is a metal plate bending part, including a horizontally bent part and a vertically arranged shielding part which are integrally bent. The horizontal part covers the top plane at the end of the crossbeam assembly 2, and the shielding part is used to shield the end of the crossbeam assembly 2; two plug plates which are arranged vertically downward and respectively correspond to the end parts of the crossbeam body of the crossbeam assembly 2 are arranged in the middle of the support plate 5, and the two plug plates form the supporting plug part 500; similarly, slots 203 which penetrate through the top wall and the bottom wall of the crossbeam assembly 2 along the vertical direction are respectively arranged at the end parts of the crossbeam assembly 2; the two plug plates of the plug part 500 of the support plate 5 are respectively inserted into the two slots 203 of the crossbeam assembly 2, and the free ends of the two plug plates extend downward out of the bottom of the crossbeam assembly 2 and are respectively inserted into the plug holes 303 of the baffle plates 302 on both sides of the motor housing 301.

[0050] It is not difficult to understand that in order to facilitate the user to assemble the workbench by himself after purchase, the tabletop 1, the crossbeam assembly 2, the support plate 5, the table legs 3 and the base 4 of the workbench are respectively independent components, that is, the tabletop 1, the crossbeam assembly 2, the support plate 5, the table legs 3 and the base 4 of the workbench respectively form independent installation modules when the product leaves the factory, and each module itself does not need to be assembled by the user.

[0051] Further, in the above embodiment, the workbench further includes a locking mechanism 6 installed on the crossbeam assembly 2. The locking mechanism 6 includes a handle portion 601 rotatably connected to the crossbeam assembly 2 and a traction member 600 rotatably connected to the handle portion 601 and hooked to the hanging portion 304 of the motor housing 301. The locking mechanism 6 is used to drive the motor housing 301 to move away from the support plate 5 to a locking position. In the locking position, the locking mechanism 6 exerts a squeezing force on the motor housing 301 and the insertion portion 500, so that the motor housing 301 is fixed in the installation space 202 and the support plate 5 is fixed on the crossbeam assembly 2. Therefore, when assembling the workbench of this embodiment, first place the motor housing 301 of the table leg 3 into the installation space 202 of the crossbeam assembly 2 from bottom to top, then respectively insert the two insertion plates of the insertion portion 500 of the support plate 5 into the slots 203 at the ends of the crossbeam assembly 2 and insert the free end of the insertion portion 500 into the insertion hole 303 of the motor housing 301. Then hook the locking mechanism 6 to the hanging portion 304 of the motor housing 301. The locking mechanism 6 drives the motor housing 301 and the insertion portion 500 to move away from the support plate 5 along the length direction of the crossbeam assembly 2, and the motor housing 301 reaches the locking position. The squeezing force or traction force exerted by the locking mechanism 6 on the motor housing 301 and the insertion portion 500 simultaneously fixes the motor housing 301 and the support plate 5. When installing the table leg 3 and the support plate 5 of this workbench, no manual or electric tools are required, so that the assembly of the table leg 3 and the support plate 5 is simpler, more convenient, with a fast assembly speed and high installation efficiency, meeting the user's need for quick assembly.

[0052] Further, in the above embodiment, in order to prevent the insertion hole 303 of the motor housing 301 from being disengaged from the insertion portion 500 of the support plate 5 when the locking mechanism 6 pulls the motor housing 301 to move away from the support plate 5 for locking; refer to Figure 7 As shown, a card slot 501 is provided at the free end of the insertion portion 500, and the card slot 501 is engaged with the insertion hole 303 of the baffle 302 on the motor housing 301. That is, transverse card slots 501 with openings facing away from the locking mechanism 6 are respectively provided at the free ends of the two insertion plates of the insertion portion 500. When the free end of the insertion portion 500 is inserted into the insertion hole 303, as the motor housing 301 is pulled by the locking mechanism 6, the card slot 501 can be engaged with the insertion hole 303 to prevent the two from being disengaged.

[0053] In other embodiments, the free end of the insertion portion can also be set as an L-shaped or hook-shaped structure; or a transverse limiting protrusion for preventing the insertion portion from being disengaged from the insertion hole is provided at the free end of the insertion portion.

[0054] Similarly, in order to prevent the locked end of the motor housing 301 from shifting or tilting when the locking mechanism 6 locks as the traction motor housing 301 moves away from the support plate 5, a top plate 204 that can abut against the top of the motor housing 301 is connected to the crossbeam assembly 2 at the top of the installation space 202. It is not difficult to understand that the top plate 204 restricts the top of the motor housing 301 and the baffle 302 of the motor housing 301 restricts the bottom of the crossbeam assembly 2, so that when the locking mechanism 6 moves the traction motor housing 301, the motor housing 301 can be prevented from tilting, ensuring that the movement of the motor housing 301 in the installation space 202 of the crossbeam assembly 2 is a horizontal linear movement.

[0055] In this embodiment, the locking mechanism 6, referring to Figure 7 and Figure 8 as shown, its structure includes a traction member 600 and a handle portion 601 rotatably connected to the crossbeam assembly 2. One end of the traction member 600 is hooked to the hooking portion 304 of the motor housing 301, and the other end of the traction member 600 is rotatably connected to the handle portion 601; the handle portion 601 rotates about an axis and switches between a locking position and a release position. When the handle portion 601 rotates to the locking position, the traction member 600 drives the motor housing 301 to move to the locking position; when the handle portion 601 rotates to the release position, the locking mechanism 6 releases the extrusion force applied to the motor housing 301 and the insertion portion 500, and the traction member 600 can be disengaged from the motor housing 301.

[0056] The locking position of this embodiment is also the limit position where the motor housing 301 moves away from the support plate 5. In this position, the motor housing 301 is locked under the extrusion force or traction force of the locking mechanism 6, and the extrusion force or traction force applied by the motor housing 301 to the insertion portion 500 of the support plate 5 locks the support plate 5 on the crossbeam assembly 2.

[0057] It is not difficult to understand that the traction member 600 is rotatably connected to the handle portion 601, that is, the end of the traction member 600 is rotatably connected to the middle of the handle portion 601. When the handle portion 601 is pulled in the direction away from the support plate 5, the handle portion 601 forms a lever with its rotation center as the fulcrum, driving the traction member 600 to move in the direction away from the support plate 5, thus making the locking of the locking mechanism 6 more labor-saving. Moreover, in this embodiment, when the handle portion 601 rotates to the locking position, the handle portion 601 abuts against and is limited by the bottom of the crossbeam assembly 2; and the release position is that the handle portion 601 rotates in the direction close to the support plate 5 to disengage from the locking position.

[0058] Further in this embodiment, in order to enable the handle portion 601 of the locking mechanism 6 to remain in the locking position and not be unlocked due to accidental opening or rotation; referring to Figure 7 and Figure 8As shown in the figure, a guiding hole 606 extending along the length direction is provided on the crossbeam assembly 2. A rotating shaft 602 is slidably connected in the guiding hole 606. The handle part 601 is connected to the rotating shaft 602, and the handle part 601 can rotate circumferentially around the axis of the rotating shaft 602. The locking mechanism 6 further includes an elastic member 604. The elastic member 604 is two tension springs arranged in parallel. One end of the two tension springs is connected to the rotating shaft 602, and the other end is connected to the positioning rod 605 in the crossbeam assembly 2, for making the rotating shaft 602 always have a movement tendency away from the support plate 5. That is, when the wrench rotates to the locking position, under the elastic force of the elastic member 604, the rotating shaft 602 always has a movement tendency away from the support plate 5. The elastic force of the elastic member 604 is converted into a pulling force on the motor housing 301 through the wrench and the traction member 600, so that the motor housing 301 is more firmly and stably connected at the locking position, and also makes the combination of the support plate 5 and the end of the crossbeam assembly 2 more firm. In addition, the elastic force of the elastic member 604 always exerts an elastic force on the wrench away from the support plate 5, preventing the wrench from rotating towards the direction close to the support plate 5, so that the wrench can stay or be held at the locking position, improving the safety of use. In addition, due to the sliding fit between the rotating shaft 602 and the guiding hole 606, when the handle part 601 rotates to unlock, the rotating shaft 602 of the handle part 601 moves towards the direction close to the motor housing 301 against the elastic force of the elastic member 604, so as to avoid interference with the rotation of the traction member 600 and make the unlocking operation more labor-saving.

[0059] In this embodiment, as shown in Figure 7 and Figure 8 shown, the hanging part 304 on the motor housing 301 is a hook provided on the motor housing 301. There are two hooks which are respectively located on both sides of the end of the motor housing 301. The traction member 600 has a hanging rod 603 which is matched and hung with the two hooks. The hanging connection between the hanging rod 603 of the traction member 600 and the hooks of the hanging part 304 makes the locking operation of the motor housing 301 simpler and more convenient; and when the handle part 601 rotates to the release position, it is also convenient for the motor housing 301 to disengage from the locking mechanism 6.

[0060] Furthermore, in this embodiment, as shown in Figure 3 and Figure 8 shown, a limiting groove 205 extending along the length direction is provided on the crossbeam assembly 2, and the opening of the limiting groove 205 penetrates through the bottom wall of the crossbeam assembly 2; when the handle part 601 rotates to the locking position, the hanging rod 603 is clamped in the limiting groove 205 through the opening. The limiting groove 205 plays a limiting role in the longitudinal or height direction on the hanging rod 603, so that the motor housing 301 is more stably and firmly connected.

[0061] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms indicating directions or positional relationships such as "inside" and "outside" are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present application.

[0062] In the description of the present application, the description referring to terms such as "one embodiment", "some embodiments", "in this embodiment", "specific examples", or "some examples" means that the specific features, mechanisms, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0063] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A crossbeam assembly, characterized in that: including two crossbeam bodies, which are arranged in sequence along the length direction of the crossbeam assembly and can move relative to each other to adjust the length of the crossbeam assembly; the two crossbeam bodies respectively have a first joint surface and a second joint surface arranged along the length direction; a connecting plate, which extends along the length direction of the crossbeam assembly and is slidably attached to the first joint surface and the second joint surface respectively; two pressing wheel assemblies, which are respectively connected to the two crossbeam bodies, and the pressing wheels of the two pressing wheel assemblies are respectively pressed against the connecting plate, and are used to generate a pre-tightening pressure on the first joint surface and the second joint surface by the connecting plate. The pre-tightening pressure is configured to press the connecting plate against the first joint surface and the second joint surface respectively, and enable any crossbeam body to slide along the length direction relative to the connecting plate under the action of an external force.

2. The crossbeam assembly according to claim 1, wherein: Each of the pressing wheel assemblies includes a bracket connected to the crossbeam body, and at least one of the pressing wheels is rotatably connected to the bracket, and the axis of the pressing wheel is perpendicular to the length direction of the connecting plate.

3. The crossbeam assembly according to claim 2, characterized in that: Two of the pressing wheels distributed along the length direction of the connecting plate are rotatably connected to the bracket of each of the pressing wheel assemblies.

4. The crossbeam assembly according to claim 3, wherein: The pressing wheel is made of a soft elastic material.

5. The crossbeam assembly according to claim 2, wherein: A receiving groove that is recessed downward and has an opening formed at the top of the crossbeam body is arranged along the length direction at the top of each crossbeam body. The inner bottom walls of the receiving grooves of the two crossbeam bodies respectively form the first joint surface and the second joint surface; the connecting plate is respectively sleeved in the receiving grooves of the two crossbeam bodies.

6. The crossbeam assembly according to claim 5, characterized in that: The bracket of the pressing wheel assembly is connected to the opening of the receiving groove of the crossbeam body, and the mounting end for mounting the pressing wheel on the bracket extends downward into the receiving groove.

7. The crossbeam assembly according to claim 5, characterized in that: Side plates that are slidably attached to the inner side walls of the two sides of the receiving groove are respectively arranged on both sides of the connecting plate; anti-detachment limiting parts that abut against the brackets are respectively arranged at both ends of the connecting plate to prevent the connecting plate from falling off.

8. The crossbeam assembly according to claim 1, characterized in that: The two pressing wheel assemblies are respectively connected to the inner ends of the two crossbeam bodies.

9. A workbench, comprising a tabletop, a crossbeam assembly, a support plate, table legs and a base, characterized in that: The crossbeam assembly adopts the crossbeam assembly according to any one of claims 1 to 8 above.

10. The workbench according to claim 9, characterized in that: The crossbeam assembly has an installation space arranged along the length direction. The top end of the table leg is connected with a motor housing, and at least part of the motor housing is accommodated in the installation space. One end of the motor housing is provided with a plug hole, and the other end is provided with a hanging part; the support plate has a plug part inserted at the end of the crossbeam assembly, and the free end of the plug part is inserted into the plug hole of the motor housing; the workbench further includes a locking mechanism installed on the crossbeam assembly. The locking mechanism includes a handle part rotatably connected to the crossbeam assembly and a traction part rotatably connected to the handle part and hooked to the hanging part of the motor housing. The locking mechanism is used to drive the motor housing to move away from the support plate to a locking position; in the locking position, the locking mechanism exerts a squeezing pressure on the motor housing and the plug part, so that the motor housing is fixed in the installation space and the support plate is fixed on the crossbeam assembly.

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