Lifting table

Abstract

The utility model provides a lifting table which comprises a table board, graded lifting legs and an unlocking operation mechanism, the graded lifting legs are vertically connected to the bottom of the table board, the unlocking operation mechanism is arranged at the bottom of the table board, the graded lifting legs are connected to the unlocking operation mechanism, and the unlocking operation mechanism can unlock to allow the graded lifting legs to ascend and descend. Therefore, by operating the unlocking operation mechanism, unlocking can be performed to allow the lifting adjustment of the graded lifting legs, so that the table plate is adjusted to the required height, and then the unlocking operation mechanism is released, so that the graded lifting legs can be locked at the height where the graded lifting legs are located. Therefore, height adjustment of the table board is achieved, the structure is simple, the height does not need to be adjusted in a re-disassembly and re-assembly mode, the adjustment operation is simpler and more convenient, time and labor are saved, and the use experience of a user is greatly improved. In addition, the manufacturing cost is greatly reduced, and market requirements can be better met.

Description

Technical Field

[0001] The present application relates to the technical field of tables, and in particular to a lifting table. Background Art

[0002] As we all know, tables are specially used for people to read, study or work. They greatly facilitate people's study and work. Tables have become essential furniture in life or work, and people have more and more requirements for the use of tables.

[0003] However, traditional tables are often fixed and cannot be adjusted during use, and cannot meet the needs of using them at different heights or different horizontal positions. Nowadays, there are some tables that can be adjusted in height, but their structures are relatively complex, and most of them need to be disassembled and reassembled to adjust the height of the table. The adjustment operation is cumbersome, time-consuming and labor-intensive, which seriously affects the user experience. Moreover, the manufacturing cost is also high, making it difficult to adapt to market demand.

[0004] Therefore, there is an urgent need for a lifting table to overcome the above-mentioned problems. Utility Model Content

[0005] The purpose of the embodiments of the present application is to provide a lifting table, which has the advantages of simple structure, convenient adjustment operation and low manufacturing cost.

[0006] To achieve the above-mentioned purpose, the present application provides a lifting table, including: a table top, a stepped lifting leg and a lock release operating mechanism, the stepped lifting leg is vertically connected to the bottom of the table top, the lock release operating mechanism is arranged at the bottom of the table top, and the stepped lifting leg is connected to the lock release operating mechanism, and the lock release operating mechanism can release the lock to allow the stepped lifting leg to rise and fall.

[0007] Optionally, the stepped lifting leg includes: a supporting base, a vertical sleeve, a lifting sleeve and a connecting seat, the vertical sleeve is vertically fixed on the supporting base, the lifting sleeve is vertically moved and inserted into the vertical sleeve, the connecting seat is fixedly connected to the upper end of the lifting sleeve, and the connecting seat is fixedly connected to the bottom of the table top.

[0008] Optionally, the graded lifting leg further comprises: a fixed installation column, a graded positioning member, a swing clamping member, an elastic member, a release slide and a traction member, wherein the fixed installation column is vertically fixed on the support base, and the fixed installation column is inserted into the lifting sleeve with a gap;

[0009] The grading positioning member is integrally formed or fixedly connected to the fixed mounting column, and a plurality of positioning slots are formed on the grading positioning member, and the positioning slots are spaced apart and distributed along the vertical direction; the upper end of the swing clamping member is pivotally connected to the inner side wall of the lifting sleeve, and the lower end of the swing clamping member can be selectively engaged in the positioning slot at any position;

[0010] The elastic member is in contact with the inner side wall of the lifting sleeve and the swing engaging member, and the elastic member constantly drives the swing engaging member to swing in the direction of being engaged with the opposite positioning slot;

[0011] The release slide moves vertically on at least one of the fixed installation column and the graded positioning member, the traction member moves vertically on at least one of the fixed installation column and the graded positioning member, the release slide is fixedly connected to the lower end of the traction member, and the upper end of the traction member extends to the top of the lifting sleeve; the release slide can push the swing engaging member out of the engaged positioning slot.

[0012] Optionally, a lock releasing push groove is provided on the lock releasing slide, and the opening direction of the lock releasing push groove is the same as the opening direction of the positioning card slot, the lower side wall of the positioning card slot is arranged horizontally or upwardly inclined, and the lower side wall of the lock releasing push groove is arranged downwardly inclined.

[0013] Optionally, the stepped lifting leg also includes: a linkage socket and a plurality of fixed force springs, the linkage socket is vertically fixed on the inner wall of the lifting sleeve, the fixed part of the fixed force spring is fixedly connected to the fixed mounting column, and the linkage socket is provided with a accommodating groove corresponding to the fixed force spring one by one, the opening of the accommodating groove is horizontally facing the fixed mounting column, and the coil spring parts of the fixed force spring are movably accommodated in the accommodating groove one by one.

[0014] Optionally, the unlocking operation mechanism comprises: a vertical pull rod and a swing arm, the vertical pull rod is vertically movably arranged on the connecting seat, and the lower end of the vertical pull rod is connected to the upper end of the traction member; a first pivoting portion and a second pivoting portion are formed on the swing arm, and the first pivoting portion and the second pivoting portion are spaced apart from each other along the length direction of the swing arm;

[0015] The first pivoting portion is horizontally pivoted to the connecting seat, the second pivoting portion is horizontally pivoted to the upper end of the vertical pull rod, and the pivot axis of the first pivoting portion is parallel to the pivot axis of the second pivoting portion.

[0016] Optionally, a third pivot portion is further formed on the swing arm, and the first pivot portion is located between the third pivot portion and the second pivot portion along the length direction of the swing arm.

[0017] Optionally, the unlocking operation mechanism further comprises: a unlocking swinging member, the unlocking swinging member being pivotally connected to the connecting seat, and a pivot axis of the unlocking swinging member being parallel to a pivot axis of the first pivoting portion;

[0018] One end of the unlocking swing member is pivotally connected to the third pivoting portion, the other end of the unlocking swing member is formed with a unlocking operation portion, and the pivot axis of the unlocking swing member is located between the third pivoting portion and the unlocking operation portion.

[0019] Optionally, the unlocking operation mechanism further comprises: a linkage slide, the linkage slide is slidably disposed on the connecting seat, and the sliding direction of the linkage slide is horizontally perpendicular to the pivot axis of the first pivoting portion;

[0020] An elongated guide hole is formed on the linkage slide, and the elongated guide hole penetrates the linkage slide in a direction parallel to the pivot axis of the first pivot portion, and the length direction of the elongated guide hole is inclined along a direction perpendicular to the pivot axis of the first pivot portion, and the third pivot portion is slidably connected in the elongated guide hole.

[0021] Optionally, the lock release operating mechanism further comprises: a lock release swinging member and a linked swinging arm, wherein the lock release swinging member is pivotally connected to the connecting seat, and a pivot axis of the lock release swinging member is parallel to a pivot axis of the first pivoting portion; a lock release operating portion is formed at one end of the lock release swinging member, and a swing pivoting portion is formed at the other end of the lock release swinging member, and a pivot axis of the lock release swinging member is located between the lock release operating portion and the swing pivoting portion;

[0022] One end of the linkage swing arm is pivotally connected to the linkage slide, the other end of the linkage swing arm is pivotally connected to the swing pivot portion, and the pivot axis lines at both ends of the linkage swing arm are parallel to the pivot axis line of the first pivot portion.

[0023] Since the graded lifting legs of the lifting table of the present application are vertically connected to the bottom of the table top, the unlocking operating mechanism is arranged at the bottom of the table top, and the graded lifting legs are connected to the unlocking operating mechanism, the unlocking operating mechanism can release the lock to allow the graded lifting legs to be lifted and lowered. Then, by operating the unlocking operating mechanism, the graded lifting legs can be released to allow the lifting and lowering adjustment, so that the table top can be adjusted to the required height, and then the unlocking operating mechanism can be released to lock the graded lifting legs at the height. Thus, the height adjustment of the table top is achieved, which is not only simple in structure, but also does not need to be adjusted by re-disassembling and reassembling, making the adjustment operation simpler and more convenient, saving time and effort, and greatly improving the user experience. Moreover, the manufacturing cost is also greatly reduced, which can better meet market demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic three-dimensional assembly diagram of a lifting table according to the first embodiment of the present application.

[0025] Figure 2 This is a schematic three-dimensional diagram of the combination of the stepped lifting legs of the lifting table of the first embodiment of the application with the supporting base removed.

[0026] Figure 3 for Figure 2 Schematic diagram of the decomposition.

[0027] Figure 4 It is a schematic assembly three-dimensional diagram of the unlocking operating mechanism of the lifting table according to the first embodiment of the present application.

[0028] Figure 5 This is a schematic three-dimensional assembly diagram of a lifting table according to the second embodiment of the present application.

[0029] Figure 6 It is a schematic assembly three-dimensional diagram of the unlocking operating mechanism of the lifting table according to the second embodiment of the present application. DETAILED DESCRIPTION

[0030] The present application is further described below in conjunction with the accompanying drawings and preferred embodiments, but the implementation methods of the present application are not limited thereto.

[0031] See also Figures 1 to 4 , shows the lifting table 100 of the first embodiment of the present application, wherein the embodiment includes: a table top 10, a graded lifting leg 20 and a lock release operating mechanism 30, the graded lifting leg 20 is vertically connected to the bottom of the table top 10, and the lock release operating mechanism 30 is arranged at the bottom of the table top 10, so that the table top 10 can be supported and lifted by the graded lifting leg 20. And the graded lifting leg 20 is connected to the lock release operating mechanism 30, and the lock release operating mechanism 30 can release to allow the graded lifting leg 20 to be lifted and lowered. Then, by operating the lock release operating mechanism 30, the lock can be released to allow the graded lifting leg 20 to be lifted and lowered, so that the table top 10 is adjusted to the required height, and then releasing the lock release operating mechanism 30, the graded lifting leg 20 can be locked at the height. In this way, the height adjustment of the table top 10 is realized, which not only has a simple structure, but also does not need to be adjusted by re-disassembly and assembly, making the adjustment operation simpler and more convenient, saving time and effort, and greatly improving the user experience. Moreover, the manufacturing cost is also greatly reduced, which can better meet market demand. Specifically, as follows:

[0032] See also Figures 1 to 3In this embodiment, the step-by-step lifting leg 20 includes: a supporting base 21a, a vertical sleeve 21b, a lifting sleeve 21c and a connecting seat 21d, wherein the vertical sleeve 21b is vertically fixed on the supporting base 21a, the lifting sleeve 21c is vertically moved and inserted into the vertical sleeve 21b, the connecting seat 21d is fixedly connected to the upper end of the lifting sleeve 21c, and the connecting seat 21d is fixedly connected to the bottom of the table top 10. The vertical height of the table top 10 can be adjusted by lifting and lowering the lifting sleeve 21c.

[0033] Furthermore, in this embodiment, the graded lifting leg 20 further includes: a fixed installation column 22, a graded positioning member 24, a swinging engaging member 25, an elastic member 26, a release slide 27 and a traction member 28. The fixed installation column 22 is vertically fixed on the support base 21a, and the fixed installation column 22 is inserted into the lifting sleeve 21c with a gap, so that the lifting sleeve 21c is movably arranged between the fixed installation column 22 and the vertical sleeve 21b, and the structural layout is more reasonable. The graded positioning member 24 is fixedly connected to the fixed installation column 22. Of course, in other embodiments, the graded positioning member 24 can also be selected to be integrally formed on the fixed installation column 22, which is within the protection scope of this application, so it will not be described in detail here. A plurality of positioning slots 241 are formed on the graded positioning member 24, and the positioning slots 241 are spaced apart in the vertical direction; the upper end of the swinging engaging member 25 is pivotally connected to the inner side wall of the lifting sleeve 21c, and the lower end of the swinging engaging member 25 can be selectively engaged in the positioning slots 241 at any position. By engaging the swinging engaging member 25 with the positioning slots 241 at different height positions, the lifting sleeve 21c can be locked at the corresponding height position, and the graded adjustment of the position in the vertical direction can be achieved. The elastic member 26 abuts between the inner side wall of the lifting sleeve 21c and the swinging engaging member 25, and the elastic member 26 constantly drives the swinging engaging member 25 to swing in the direction of engaging in the opposite positioning slot 241. The swing engaging member 25 is driven to automatically reset and engage in the opposite positioning slot 241, and is maintained in the state of being engaged in the opposite positioning slot 241, preventing the swing engaging member 25 from accidentally disengaging from the positioning slot 241, and the structure is more reasonable. The release slide 27 moves vertically on the graded positioning member 24. Of course, in other embodiments, the release slide 27 can also be selected to move vertically on the fixed installation column 22 or be simultaneously vertically moved on both the fixed installation column 22 and the graded positioning member 24, and the installation structure of the release slide 27 can be realized. Furthermore, the traction member 28 moves vertically on at least one of the fixed installation column 22 and the graded positioning member 24, and the release slide 27 is fixedly connected to the lower end of the traction member 28, and the upper end of the traction member 28 extends to the top of the lifting sleeve 21c; the release slide 27 can push the swing engaging member 25 to disengage from the engaged positioning slot 241. By operating the pulling member 28 to drive the release slide 27 to push the swing engaging member 25 out of the engaged positioning slot 241, the height position of the lifting sleeve 21c can be adjusted by vertical lifting and lowering. The structure is simpler and more reasonable, and the operation is more convenient.

[0034] Specifically, in this embodiment, a release push groove 271 is provided on the release slide 27, and the opening direction of the release push groove 271 is the same as the opening direction of the positioning groove 241. When the release push groove 271 is connected to the positioning groove facing it, the lower end of the swing clamp 25 can be engaged with the release push groove 271 and the positioning groove facing it, thereby achieving engagement and positioning. When the release push groove 271 moves upward, the lower side wall of the release push groove 271 can push the lower end of the swing clamp 25 out of the engaged positioning groove, and the lifting sleeve 21c can be vertically moved and adjusted. The lower side wall of the positioning groove 241 is arranged horizontally. When the swing clamp 25 is engaged in the positioning groove 241, the lower side wall of the positioning groove 241 can block the swing clamp 25 from moving downward, thereby achieving the height position of the locking lifting sleeve 21c. Of course, in other embodiments, the lower side wall of the positioning slot 241 can also be selected to be arranged to be tilted upward, which can also achieve the effect of blocking the swing engaging member 25 from moving downward. All of these are within the protection scope of the present utility model and will not be described in detail here.

[0035] Furthermore, the lower side wall of the unlocking pushing groove 271 is arranged to be inclined downward. When the unlocking pushing groove 271 moves upward, the lower side wall of the unlocking pushing groove 271 can push the lower end of the swinging engaging member 25 out of the engaged positioning engaging groove 241, and the structure is more reasonable.

[0036] Furthermore, the graded lifting leg 20 also includes: a linkage clamping seat 23 and a plurality of fixed force springs 29, the linkage clamping seat 23 is vertically fixed on the inner side wall of the lifting sleeve 21c, the fixed part of the fixed force spring 29 is fixedly connected to the fixed installation column 22, and a receiving groove 231 corresponding to the fixed force spring 29 is opened on the linkage clamping seat 23, the receiving groove 231 opens horizontally toward the fixed installation column 22, and the coiled spring part of the fixed force spring 29 is movably accommodated in the receiving groove 231 in a one-to-one manner. The coiled spring part of the fixed force spring 29 can be elastically unwound or rewound in the receiving groove 231, thereby realizing the tendency of the lifting sleeve 21c to move vertically upward by constant driving. Not only can the lifting sleeve 21c be moved upward with effortless movement, but also when the lifting sleeve 21c is moved downward, it can also ensure that the lifting sleeve 21c slowly and steadily descends, making the operation of the lifting sleeve 21c moving up and down more stable and effortless.

[0037] Optionally, in this embodiment, two sets of symmetrical interlocking seats 23 and constant force springs 29 are arranged between the fixed mounting column 22 and the lifting sleeve 21c, so as to more stably and evenly maintain the vertical upward movement trend of the lifting sleeve 21c, making the lifting and lowering movement of the lifting sleeve 21c more stable and firm, and the structure more reasonable.

[0038] Optionally, in this embodiment, the graded positioning member 24, the swing engaging member 25, the elastic member 26, the release slide 27 and the traction member 28 are symmetrically arranged in two groups, and the upper ends of the two groups of traction members 28 are integrally formed and connected together, so as to more stably and firmly lock the height position of the lifting sleeve 21c to avoid looseness or instability.

[0039] See also Figure 1 , Figure 3 and Figure 4 In this embodiment, the unlocking operation mechanism 30 includes: a vertical pull rod 31 and a swing arm 32. The vertical pull rod 31 is vertically movable on the connecting seat 21d, and the lower end of the vertical pull rod 31 is connected to the upper end of the pulling member 28. The swing arm 32 is formed with a first pivoting portion 321 and a second pivoting portion 322, and the first pivoting portion 321 and the second pivoting portion 322 are arranged spaced apart along the length direction of the swing arm 32. The first pivoting portion 321 is horizontally pivoted on the connecting seat 21d, and the second pivoting portion 322 is horizontally pivoted to the upper end of the vertical pull rod 31. The pivot axis of the first pivoting portion 321 is parallel to the pivot axis of the second pivoting portion 322. By driving the swing arm 32 to rotate, the swing arm 32 pulls the vertical pull rod 31 to drive the traction member 28 to move up and down, and then the traction member 28 drives the release slide 27 to push the corresponding swing engaging member 25 out of the corresponding engaged positioning slot 241, so the structure is safer and more reasonable.

[0040] Furthermore, a third pivoting portion 323 is formed on the swing arm 32, and the first pivoting portion 321 is located between the third pivoting portion 323 and the second pivoting portion 322 along the length direction of the swing arm 32. In this embodiment, the unlocking operation mechanism 30 further includes: a unlocking swinging member 33, the unlocking swinging member 33 is pivoted on the connecting seat 21d, and the pivot axis of the unlocking swinging member 33 is parallel to the pivot axis of the first pivoting portion 321. One end of the unlocking swinging member 33 is pivoted to the third pivoting portion 323, and the other end of the unlocking swinging member 33 is formed with a unlocking operation portion 331, and the pivot axis of the unlocking swinging member 33 is located between the third pivoting portion 323 and the unlocking operation portion 331. Thus, by operating the release operating part 331 to swing upward, the end of the release swinging member 33 away from the release operating part 331 drives the third pivoting part 323 to swing downward, so that the second pivoting part 322 on the swing arm 32 swings upward, which can drive the vertical pull rod 31 to drive the traction member 28 to move vertically upward, and then the traction member 28 drives the release slide 27 to push the swing clamping member 25 out of the corresponding clamping positioning slot 241, so that the height position of the lifting sleeve 21c can be adjusted vertically. Until the table top 10 is moved to the desired height position, the release operating part 331 is released, so that the release operating part 331 swings downward to reset, and the traction member 28 moves downward, and then the traction member 28 drives the release slide 27 to avoid the swing clamping member 25 from being clamped in the corresponding positioning slot 241, so as to achieve the height position of the positioning and locking of the table top 10.

[0041] See also Figures 1 to 4 , the working principle of the lifting table 100 of this embodiment is described in detail:

[0042] First, by operating the release operating part 331 to swing upward, the end of the release swinging member 33 away from the release operating part 331 drives the third pivoting part 323 to swing downward, so that the second pivoting part 322 on the swing arm 32 swings upward, which can drive the vertical pull rod 31 to drive the traction member 28 to move vertically upward. Then, the traction member 28 drives the release slide 27 to move upward, so that the release pushing groove 271 moves upward, and the lower side wall of the release pushing groove 271 can push the lower end of the swing engaging member 25 out of the engaged positioning groove, so that the height position of the lifting sleeve 21c can be adjusted by vertical lifting and lowering.

[0043] Until the table top 10 is moved to the desired height position, the unlocking operating part 331 is released, so that the unlocking operating part 331 swings downward to reset, and the traction member 28 moves downward, and then the unlocking slide 27 is driven by the traction member 28 to move downward to reset, so that the unlocking push groove 271 is connected to the opposite positioning groove, and the lower end of the swinging engaging member 25 can be engaged with the oppositely connected unlocking push groove 271 and the positioning groove, thereby realizing the engaging positioning, so as to locate and lock the height position of the table top 10, and the height adjustment operation of the table top 10 can be completed.

[0044] See also Figure 5 and Figure 6 , shows a lifting table 100 'of the second embodiment of the present application, wherein the lifting table 100 'of this embodiment has basically the same structural principle as the lifting table 100 of the first embodiment, and the only difference is that:

[0045] In this embodiment, the release operating mechanism 30' further includes: a linkage slide 34', the linkage slide 34' is slidably disposed on the connection seat 21d, and the sliding direction of the linkage slide 34' is horizontally perpendicular to the pivot axis of the first pivot portion 321. An elongated guide hole 341' is formed on the linkage slide 34', and the elongated guide hole 341' penetrates the linkage slide 34' in a direction parallel to the pivot axis of the first pivot portion 321, and the length direction of the elongated guide hole 341' is obliquely arranged in a direction perpendicular to the pivot axis of the first pivot portion 321, and the third pivot portion 323 is slidably connected in the elongated guide hole 341'. Furthermore, the unlocking operation mechanism 30' further includes: an unlocking swing member 33' and a linkage swing arm 35'. The unlocking swing member 33' is pivotally connected to the connection seat 21d, and the pivot axis of the unlocking swing member 33' is parallel to the pivot axis of the first pivot portion 321. One end of the unlocking swing member 33' is formed with an unlocking operation portion 331', and the other end of the unlocking swing member 33' is formed with a swing pivot portion 332', and the pivot axis of the unlocking swing member 33' is located between the unlocking operation portion 331' and the swing pivot portion 332'. One end of the linkage swing arm 35' is pivotally connected to the linkage slide 34', and the other end of the linkage swing arm 35' is pivotally connected to the swing pivot portion 332', and the pivot axis of both ends of the linkage swing arm 35' are parallel to the pivot axis of the first pivot portion 321. Preferably, in this embodiment, the long guide hole 341' is arranged to be tilted downward along the direction from the swing arm 32 to the unlocking swing member 33'. Then, the unlocking operation part 331' is swung upward from the upward tilted state to the horizontal state, and the swing pivot part 332' drives the linked swing arm 35' to pull the linked slide 34' to move horizontally in the direction close to the vertical pull rod 31, and the third pivot part 323 moves from the upper end of the long guide hole 341' to the lower end, so that the third pivot part 323 swings downward, and the second pivot part 322 on the swing arm 32 swings upward, which can drive the vertical pull rod 31 to drive the traction member 28 to move vertically upward, and then the traction member 28 drives the unlocking slide 27 to move upward, so that the unlocking push groove 271 moves upward, and the lower side wall of the unlocking push groove 271 can push the lower end of the swing engaging member 25 to disengage from the engaged positioning groove, and the height position of the lifting sleeve 21c can be adjusted by vertical lifting and lowering.

[0046] Until the table top 10 is moved to the desired height position, the unlocking operating part 331' is released, so that the unlocking operating part 331' swings upward from the horizontal state to the upward inclined state, and the swinging pivot part 332' drives the linked swing arm 35' to pull the linked slide 34' to move horizontally in the direction away from the vertical pull rod 31, and the third pivot part 323 moves from the lower end of the elongated guide hole 341' to the upper end, and then the traction part 28 moves downward, and then the unlocking slide 27 is driven by the traction part 28 to move downward and reset, so that the unlocking pushing groove 271 is connected to the opposite positioning groove, and the lower end of the swinging engaging part 25 can be engaged with the unlocking pushing groove 271 and the positioning groove that are connected to each other, thereby realizing the engaging positioning, so as to locate and lock the height position of the table top 10, and the height adjustment operation of the table top 10 can be completed.

[0047] Except for the above differences, other structural principles are the same as those of the lifting table 100 of the first embodiment, so they are not described here in detail.

[0048] Since the graded lifting legs 20 of the lifting tables 100, 100' of the present application are vertically connected to the bottom of the table top 10, the unlocking operating mechanisms 30, 30' are arranged at the bottom of the table top 10, and the graded lifting legs 20 are connected to the unlocking operating mechanisms 30, 30', the unlocking operating mechanisms 30, 30' can release the locks to allow the graded lifting legs 20 to be lifted or lowered. Then, by operating the unlocking operating mechanisms 30, 30', the graded lifting legs 20 can be released to allow the lifting or lowering adjustment, so that the table top 10 is adjusted to the desired height, and then releasing the unlocking operating mechanisms 30, 30', the graded lifting legs 20 can be locked at the desired height. Thus, the height adjustment of the table top 10 is achieved, which is not only simple in structure, but also does not need to be adjusted by re-disassembling the height, making the adjustment operation simpler and more convenient, saving time and effort, and greatly improving the user experience. Moreover, the manufacturing cost is also greatly reduced, which can better meet market demand.

[0049] The present application is described above in conjunction with the embodiments, but the present application is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the present application.

Claims

1. A lifting table, characterized in that: include: A table top, a stepped lifting leg and a lock release mechanism, wherein the stepped lifting leg is vertically connected to the bottom of the table top, the lock release mechanism is arranged at the bottom of the table top, and the stepped lifting leg is connected to the lock release mechanism, and the lock release mechanism can release the lock to allow the stepped lifting leg to be lifted; The step-by-step lifting leg comprises: a supporting base, a vertical sleeve, a lifting sleeve and a connecting seat, wherein the vertical sleeve is vertically fixed on the supporting base, the lifting sleeve is vertically moved and inserted into the vertical sleeve, the connecting seat is fixedly connected to the upper end of the lifting sleeve, and the connecting seat is fixedly connected to the bottom of the table top; The graded lifting leg further comprises: a fixed installation column, a graded positioning member, a swing engaging member, an elastic member, a release slide and a traction member, wherein the fixed installation column is vertically fixed on the support base, and the fixed installation column is inserted into the lifting sleeve with a gap; The grading positioning member is integrally formed or fixedly connected to the fixed mounting column, and a plurality of positioning slots are formed on the grading positioning member, and the positioning slots are spaced apart and distributed along the vertical direction; the upper end of the swing clamping member is pivotally connected to the inner side wall of the lifting sleeve, and the lower end of the swing clamping member can be selectively clamped in the positioning slot at any position; The elastic member is in contact with the inner side wall of the lifting sleeve and the swing engaging member, and the elastic member constantly drives the swing engaging member to swing in the direction of being engaged with the opposite positioning slot; The release slide moves vertically on at least one of the fixed installation column and the graded positioning member, the traction member moves vertically on at least one of the fixed installation column and the graded positioning member, the release slide is fixedly connected to the lower end of the traction member, and the upper end of the traction member extends to the top of the lifting sleeve; the release slide can push the swing engaging member out of the engaged positioning slot.

2. The lifting table according to claim 1, characterized in that: The release slide seat is provided with a release pushing groove, and the opening direction of the release pushing groove is the same as the opening direction of the positioning card slot, the lower side wall of the positioning card slot is arranged horizontally or upwardly inclined, and the lower side wall of the release pushing groove is arranged downwardly inclined.

3. The lifting table according to claim 1, characterized in that: The graded lifting leg also includes: a linkage clamping seat and a plurality of fixed force springs, wherein the linkage clamping seat is vertically fixed on the inner side wall of the lifting sleeve, and the fixed part of the fixed force spring is fixedly connected to the fixed mounting column. The linkage clamping seat is provided with a receiving groove corresponding to the fixed force spring one by one, and the opening of the receiving groove is horizontally facing the fixed mounting column, and the coil spring parts of the fixed force spring are movably accommodated in the receiving groove one by one.

4. The lifting table according to claim 1, characterized in that: The release operating mechanism comprises: a vertical pull rod and a swing arm, wherein the vertical pull rod is vertically movable on the connecting seat, and the lower end of the vertical pull rod is connected to the upper end of the pulling member; a first pivoting portion and a second pivoting portion are formed on the swing arm, and the first pivoting portion and the second pivoting portion are spaced apart from each other along the length direction of the swing arm; The first pivoting portion is horizontally pivoted to the connecting seat, the second pivoting portion is horizontally pivoted to the upper end of the vertical pull rod, and the pivot axis of the first pivoting portion is parallel to the pivot axis of the second pivoting portion.

5. The lifting table according to claim 4, characterized in that: A third pivoting portion is also formed on the swing arm, and the first pivoting portion is located between the third pivoting portion and the second pivoting portion along the length direction of the swing arm.

6. The lifting table according to claim 5, characterized in that: The unlocking operation mechanism further includes: a unlocking swinging member, the unlocking swinging member is pivotally connected to the connecting seat, and the pivot axis of the unlocking swinging member is parallel to the pivot axis of the first pivoting portion; One end of the unlocking swing member is pivotally connected to the third pivoting portion, the other end of the unlocking swing member is formed with a unlocking operation portion, and the pivot axis of the unlocking swing member is located between the third pivoting portion and the unlocking operation portion.

7. The lifting table according to claim 5, characterized in that: The release operating mechanism further includes: a linkage slide, the linkage slide is slidably disposed on the connecting seat, and the sliding direction of the linkage slide is horizontally perpendicular to the pivot axis of the first pivot portion; An elongated guide hole is formed on the linkage slide, and the elongated guide hole penetrates the linkage slide in a direction parallel to the pivot axis of the first pivot portion, and the length direction of the elongated guide hole is inclined along a direction perpendicular to the pivot axis of the first pivot portion, and the third pivot portion is slidably connected in the elongated guide hole.

8. The lifting table according to claim 7, characterized in that: The unlocking operation mechanism further includes: a unlocking swinging member and a linked swinging arm, wherein the unlocking swinging member is pivotally connected to the connecting seat, and a pivot axis of the unlocking swinging member is parallel to a pivot axis of the first pivoting portion; a unlocking operation portion is formed at one end of the unlocking swinging member, and a swinging pivoting portion is formed at the other end of the unlocking swinging member, and a pivot axis of the unlocking swinging member is located between the unlocking operation portion and the swinging pivoting portion; One end of the linkage swing arm is pivotally connected to the linkage slide, the other end of the linkage swing arm is pivotally connected to the swing pivot portion, and the pivot axis lines at both ends of the linkage swing arm are parallel to the pivot axis line of the first pivot portion.

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