Tightness adjusting device for chain of lifting cabinet

Abstract

A tightness adjusting device of a lifting cabinet chain comprises an installation frame, a driving chain wheel is installed at the upper end of the installation frame through an upper chain wheel base, and a main shaft of a driving mechanism is in shaft connection with the driving chain wheel. The lower end of the installation frame is provided with a driven chain wheel through a lower chain wheel base, the upper end and the lower end of the chain are arranged outside the driving chain wheel and the driven chain wheel in a sleeving mode respectively, an adjusting device is arranged on the lower chain wheel base and comprises an eccentric screw hinged to the lower chain wheel base, and the eccentric screw protrudes out of a body and is provided with an eccentric rod. The eccentric rod extends out of the lower sprocket seat and is connected with the upper end of the driving plate; the adjusting device further comprises an adjusting groove penetrating through the lower chain wheel base, a connecting shaft of the lower chain wheel base sequentially penetrates through the adjusting groove to be connected with the lower end of the driving plate, the eccentric screw is rotated, the lower chain wheel base is driven by the driving plate to slide in the axial direction of the adjusting groove, the relative distance between the upper chain wheel base and the lower chain wheel base is adjusted, and the tightness degree of the chain is adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lifting cabinet chain adjusting structure, specifically is a lifting cabinet chain tightness adjusting device. BACKGROUND

[0002] In order to promote the facade use of space, modern furniture sets up lifting cabinet and installs on higher wall, to reserve enough lifting space. Lifting cabinet includes cabinet body and inner cabinet, and the inner cabinet is driven to move along the guide rail under the driving of driving system. The driving system in prior art commonly uses transmission chain to drive, and driving sprocket and driven sprocket are arranged on the upper and lower ends of transmission chain to link. In the daily use, transmission chain will appear the phenomenon of pulling up, although it does not affect the normal use of transmission chain, but the installation deviation of chain and sprocket will gradually increase with long-term use, leading to the phenomenon of tooth skipping in the assembly of transmission chain and sprocket, accelerating the wear of transmission chain, and reducing the service life of both. Secondly, due to the inconsistent tightness of transmission chain in each part, the lifting speed and lifting position of the two ends of the inner cabinet will produce certain difference, leading to the inclination of the inner cabinet in the lifting process, and the inconsistency of the levelness of the two ends of the inner cabinet, which not only affects the normal use of the lifting cabinet, affects its external appearance, but also further aggravates the wear, and even leads to the sticking or derailment of the lifting cabinet under the condition of large deviation, which has safety hazards.

[0003] At present, in order to solve the problem of inconsistent tightness of transmission chain, the manual adjustment mode is usually adopted to adjust the transmission chain body, and the adjustment operation needs high professional technology, and the maintenance cost is high, and at the same time, the manual adjustment is difficult to accurately control the tightness of the chain, which is easy to lead to the phenomenon of over-tightening or over-loosening, further affecting the stability of the lifting cabinet. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the shortcomings of prior art, providing a kind of lifting cabinet chain tightness adjusting device with simple structure, low manufacturing cost, adjustable chain tightness, improved stability and reliability of lifting cabinet, improved safety, convenient operation, reduced maintenance cost and strong adaptability.

[0005] The utility model aims at overcoming the shortcomings of prior art, providing a kind of lifting cabinet chain tightness adjusting device with simple structure, low manufacturing cost, adjustable chain tightness, improved stability and reliability of lifting cabinet, improved safety, convenient operation, reduced maintenance cost and strong adaptability.

[0006] The adjusting device further comprises an adjusting groove formed through the lower chain wheel base, the connecting shaft of the lower chain wheel base is connected with the lower end of the driving plate in sequence through the adjusting groove, the eccentric screw is rotated, the lower chain wheel base is driven by the driving plate to slide along the adjusting groove in the axial direction, the relative distance between the upper chain wheel base and the lower chain wheel base is adjusted, and the tightness of the chain is adjusted.

[0007] The upper and lower ends of the driving plate are respectively provided with an upper hinge hole and a lower hinge hole formed through the upper and lower ends, the eccentric screw is hinged in the upper hinge hole, and the connecting shaft of the lower chain wheel base is hinged in the lower hinge hole.

[0008] The adjusting groove is a long waist type groove arranged in the axial direction.

[0009] The eccentric screw comprises a driving boss, an eccentric rod and a hinge shaft integrated with the driving boss and the eccentric rod, and the centers of the driving boss and the eccentric rod are offset.

[0010] The lower chain wheel base is provided with a mounting hole, the hinge shaft is hinged in the mounting hole, and the eccentric screw rotates along the mounting hole; and the driving boss is clamped outside the mounting hole.

[0011] The utility model discloses the beneficial effect is: 1, simple structure, low production cost, improve market competitiveness.

[0012] 2, set up adjusting device and adjust the distance between the lower chain wheel base and the upper chain wheel base, thereby adjusting the tightness of the chain.

[0013] 3, utilize the eccentric characteristic of eccentric screw and carry out height adjustment, and the adjustment precision is high, and the control of the tightness is guaranteed, and the overall consistency of the tightness of the chain is guaranteed, and the stability and reliability of the lifting cabinet are improved.

[0014] 4, the stable movement of the lifting cabinet improves the use experience of the user, reduces the abrasion of parts caused by inclination, prolongs the service life of the lifting cabinet, reduces the jamming or derailment of the lifting cabinet, and reduces the safety risk.

[0015] 5, the tightness can be adjusted through simple rotation operation, and the operation is convenient, and the maintenance difficulty and maintenance cost are reduced.

[0016] 6, the adjusting groove provides a larger adjustment space, and the applicability is strong. DRAWINGS

[0017] Figure 1 It is the internal structure schematic view of the hidden part mounting frame in the utility model.

[0018] Figure 2 It is the internal structure schematic view of the hidden part mounting frame in the utility model.

[0019] Figure 3The utility model discloses a chain, adjusting device's structure assembly drawing for the utility model Figure 3 The utility model discloses a chain, adjusting device's structure assembly drawing for the utility model

[0020] Figure 4 The utility model discloses a chain, adjusting device's structure assembly drawing for the utility model

[0021] Figure 5 The utility model discloses a chain, adjusting device's structure assembly drawing for the utility model

[0022] Figure 6 The utility model discloses a chain, adjusting device's structure assembly drawing for the utility model Specific implementation

[0023] The utility model discloses a chain, adjusting device's structure assembly drawing for the utility model

[0024] The adjusting device still includes the adjusting groove 42 of being passed through the lower sprocket seat 4, and the connecting shaft 43 of the lower sprocket seat 4 is connected with the lower end of drive plate 7 in turn through adjusting groove 42, and rotating eccentric screw 6 drives the lower sprocket seat 4 to slide along adjusting groove 42 axially through drive plate 7, adjusts the relative distance between upper sprocket seat 2 and lower sprocket seat 4, realizes the chain 5 tightness adjustment.

[0025] The upper and lower ends of drive plate 7 are respectively passed through and set up upper hinged hole 71 and lower hinged hole 72, and eccentric screw 6 is hinged in upper hinged hole 71, and the connecting shaft 43 of lower sprocket seat 4 is hinged in lower hinged hole 72.

[0026] Adjusting groove 42 is long waist type groove and is arranged axially.

[0027] Eccentric screw 6 includes drive boss 61, eccentric rod 62, and hinged shaft 63 that is integrated for connecting drive boss 61 and eccentric rod 62, and the center of drive boss 61 and eccentric rod 62 is offset.

[0028] Lower sprocket seat 4 is provided with mounting hole 44, and hinged shaft 63 is hinged in the mounting hole 44, and eccentric screw 6 rotates along the mounting hole 44, and drive boss 61 is clamped outside mounting hole 44.

[0029] Working principle: Unlike the traditional direct transmission chain tension adjustment mode, the adjustment device in the case is connected to the lower chain wheel seat, the relative distance between the upper chain wheel seat and the lower chain wheel seat is changed by adjusting the height of the lower chain wheel seat, so as to realize the tension adjustment of the chain.

[0030] The adjustment device comprises an eccentric screw hinged to the lower chain wheel seat, and the eccentric rod provided on the eccentric screw body is hinged to the upper end of the driving plate.

[0031] It should be noted that the center of the eccentric rod and the driving boss in the eccentric screw is offset, when the user rotates the driving boss with a tool, the eccentric rod rotates around the center of the hinge shaft, and the upper end of the driving plate swings around the hinge shaft under the driving of the eccentric rod. At this time, the lower end of the driving plate slides in the axial direction along the adjusting groove, driving the lower chain wheel seat to move up and down as a whole, changing the relative distance between the lower chain wheel seat and the upper chain wheel seat. The change of the height of the lower chain wheel seat directly affects the tension state of the chain, when the lower chain wheel seat moves down, the chain is tightened; when the lower chain wheel seat moves up, the chain is relaxed. The user can rotate the eccentric screw in different directions according to the actual needs, so as to realize the tension adjustment of the chain.

[0032] Only by rotating operation, the tension adjustment can be realized, the operation is convenient, the adjustment operation can be completed without professional technology, the maintenance difficulty and cost are significantly reduced, and the daily use or rapid maintenance requirements are met.

[0033] Through the eccentricity of the eccentric screw, the adjustment process is very accurate, the user only needs to rotate a small amplitude to realize a small height change, ensuring accurate tension control, avoiding the phenomenon of over-tightening or over-loosening in manual adjustment of the chain, ensuring that the chain tension remains consistent, and the chain on both sides can always keep in synchronization, ensuring the levelness of the lifting cabinet during lifting, improving the stability and reliability of the lifting cabinet. Further, the smooth movement of the lifting cabinet improves the user's experience, reduces the wear of parts caused by inclination, prolongs the service life of the lifting cabinet, reduces the jamming or derailment of the lifting cabinet, and reduces the safety risk.

[0034] The adjusting groove is in the shape of a long waist extending in the axial direction, which is used in cooperation with the eccentric screw, providing a large range of adjustment space, so that the chain can adapt to the tension changes caused by wear, load difference and other conditions, and limiting the adjustment range to avoid excessive adjustment. Strong applicability, so it can be widely promoted.

[0035] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application.

Claims

1. A kind of lift cabinet chain tightness adjusting device, it includes installation frame (1), the upper end of the installation frame (1) is equipped with driving sprocket (21) by upper sprocket base (2), drive mechanism (3) its main shaft is connected with driving sprocket (21) axle;The lower end of the installation frame (1) is equipped with driven sprocket (41) by lower sprocket base (4), the upper and lower ends of the chain (5) are respectively set in driving sprocket (21) and driven sprocket (41) outside, it is characterized in that: The lower chain wheel seat (4) is provided with an adjusting device, the adjusting device comprises an eccentric screw (6) hinged to the lower chain wheel seat (4), the eccentric screw (6) protruding body is provided with an eccentric rod (62), the eccentric rod (62) extends out of the lower chain wheel seat (4) and is connected with the upper end of the driving plate (7); The adjusting device further comprises an adjusting groove (42) passing through the lower chain wheel seat (4), the connecting shaft (43) of the lower chain wheel seat (4) is connected with the lower end of the driving plate (7) in sequence through the adjusting groove (42), the eccentric screw (6) is rotated, the lower chain wheel seat (4) is driven by the driving plate (7) to slide along the adjusting groove (42) in the axial direction, the relative distance between the upper chain wheel seat (2) and the lower chain wheel seat (4) is adjusted, and the tightness of the chain (5) is adjusted.

2. The tension adjustment device for a lift cabinet chain according to claim 1, wherein: The upper and lower ends of the driving plate (7) are respectively provided with an upper hinge hole (71) and a lower hinge hole (72), the eccentric screw (6) is hinged in the upper hinge hole (71), and the connecting shaft (43) of the lower chain wheel seat (4) is hinged in the lower hinge hole (72).

3. The tension adjustment device for a lift cabinet chain according to claim 1, wherein: The adjusting groove (42) is a long waist type groove arranged in the axial direction.

4. The tension adjustment device for a lift cabinet chain according to claim 1, wherein: The eccentric screw (6) comprises a driving boss (61), an eccentric rod (62) and a hinge shaft (63) connecting the driving boss (61) and the eccentric rod (62) as a whole, and the centers of the driving boss (61) and the eccentric rod (62) are offset.

5. The tension adjustment device for a lift cabinet chain according to claim 4, wherein: The lower chain wheel seat (4) is provided with a mounting hole (44), the hinge shaft (63) is hinged in the mounting hole (44), and the eccentric screw (6) rotates along the mounting hole (44); the driving boss (61) is clamped outside the mounting hole (44).

Images