CN111972826A - Lifting mechanism and two-piece type lifting table - Google Patents

Abstract

The invention provides a lifting mechanism.A supporting outer pipe is sleeved on a supporting inner pipe; the handle is connected with the pull rod and arranged above the supporting outer tube; the pull nail is connected with the support inner tube, a pull groove which is vertically arranged is arranged on the pull rod, and the pull nail is vertically connected with the pull groove in a sliding manner; the lower end of the pull rod is connected with the U-shaped piece, the U-shaped piece is provided with an inclined chute with the left end inclined upwards, the pull rod base is provided with a transverse chute which is transversely arranged, one end of the connecting nail is connected with the inclined chute in a sliding manner, and the other end of the connecting nail penetrates through the transverse chute and then is connected with the bolt and is connected with the connecting nail and the transverse chute in a sliding manner; the positioning strip is connected with the supporting outer pipe and is provided with vertically arranged pin holes; the bolt is connected with the pull rod base in a sliding mode and is inserted into the pin hole; the lower part of the volute spiral spring is connected with the pull rod base, and the upper end of the volute spiral spring is connected with the upper part of the supporting outer pipe. The invention also provides a two-piece type lifting table. The invention is convenient to adjust and lift.

Description

A lifting mechanism and a two-piece lifting table

technical field

The invention belongs to the field of lifting tables, and particularly relates to a lifting mechanism and a two-piece lifting table.

Background technique

The Chinese Patent Publication No. CN205515304U discloses a portable dining table for hospital beds. The lower end of the first segment rod is provided with a first positioning hole, and the upper end of the second segment rod is provided with a second positioning hole. A positioning pin is provided, when the first segment rod is inserted into the second segment rod from the upper end of the second segment rod, the first positioning hole and the second positioning hole overlap, and the positioning pin passes through all the The first positioning hole and the second positioning hole are used to connect the first segment rod and the second segment rod fixedly; wherein the first segment rod and the second segment rod are equivalent to supporting the inner tube and supporting the outer tube.

When adjusting the height of the elevating table in the prior art, it is necessary to bend down to support the table top, and manually remove the positioning pins from the first positioning hole and the second positioning hole to adjust the height of the table; it is necessary to move and support the table top, Only by making the first positioning hole and the second positioning hole overlap, the positioning pin can be inserted into the first positioning hole and the second positioning hole to fix the height of the desktop. The problem existing in the prior art is that the adjustment of the lift table is troublesome.

Therefore, the existing technology needs to be improved.

SUMMARY OF THE INVENTION

The technical problems to be solved by the present invention are: to provide a lifting mechanism, which is convenient to adjust and lift; and to provide a two-piece lifting table, which is convenient to adjust and lift.

In order to achieve the above-mentioned purpose, the concrete technical scheme of the present invention is as follows:

A lifting mechanism includes a support outer tube, a support inner tube, a handle, a pull rod, a U-shaped piece, a pull rod base, a connecting pin, a latch and a positioning strip; the support outer tube is sleeved on the support inner tube; The positioning strip is arranged between the support outer tube and the support inner tube, the positioning strip is connected with the support outer tube, the positioning strip is provided with more than two pin holes, and the pin holes are arranged vertically ; The tie rod and the U-shaped piece are both arranged in the inner support tube, the tie rod base is connected with the bottom of the inner support tube; the handle is connected with the tie rod, and the handle is arranged on the The upper part of the support outer tube; the bolt is connected laterally with the pull rod base, the support inner tube is provided with a hole for the bolt to pass through, and one end of the bolt passes through the support inner tube and is inserted into the pin hole The lower end of the pull rod is connected with the U-shaped sheet, the U-shaped sheet is provided with an inclined chute whose left end is inclined upward, and the base of the pull rod is provided with a horizontally arranged transverse chute; one end of the connecting nail is connected to the The bolt is connected, the other end of the connecting nail passes through the inclined chute and the transverse chute, and the connecting pin is slidably connected with both the inclined chute and the transverse chute.

As a further improved technical solution, it also includes a scroll spring, the bottom of the tie rod base is provided with an empty groove, the lower part of the scroll spring is set in the hollow groove and connected with the tie rod base, and the scroll The upper end of the spring is connected with the upper part of the support outer tube, and the upper part of the spiral spring is arranged between the support outer tube and the support inner tube.

As an optional technical solution, it also includes an ejection spring, which is connected to the right end of the latch and the pull rod base; the pull rod base is provided with a vertically arranged vertical chute, and the connection The vertical chute is slidably connected with the U-shaped piece.

As an optional technical solution, it also includes a pull stud, a pull rod spring and a limit block; the support inner tube is provided with an avoidance through groove, and the handle is arranged in the avoidance through groove; the pull stud and the support The inner tube is connected, the pull rod is provided with a vertically arranged pull groove, the pull stud and the pull groove are vertically slidably connected, the limit block is connected with the pull rod, and the limit block is arranged on the Below the pull stud, the pull rod spring is sleeved on the pull rod, and the upper end and the lower end of the pull rod spring are respectively connected with the pull stud and the limiting block.

As an optional technical solution, it also includes a rubber pad and an outer tube cover. The rubber pads are both arranged between the support outer tube and the support inner tube. The pad is connected with the positioning bar, and the outer tube cover is arranged on the top of the support outer tube and connected with the rubber pad.

As an optional technical solution, it also includes a clamping slot, the clamping slot is provided between the support outer tube and the support inner tube, the clamping slot is connected with the support inner tube, and the upper end of the scroll spring passes through through the slot.

The present invention also provides a two-piece lifting table, which includes the lifting mechanism, and also includes an H-shaped bottom pipe, a first table board, a second table board, a connecting pipe and a fixing piece. The connecting pipe is connected to the inner support pipe. The upper part of the H-shaped bottom pipe is connected with the bottom of the supporting outer pipe, the first table board is connected with the connecting pipe through the fixing piece, and the second table board is connected with the first table board. The plate is rotatably connected.

As a further improved technical solution, it also includes a first adjustment plate, a second adjustment plate, a first support rod and a second support rod, and the first support rod and the second support rod are respectively connected with the first table board and the second support rod. The two table plates are connected, the first adjustment plate and the second adjustment plate are respectively connected with the first support rod and the second support rod, the fixing plate is connected with the first support rod, the The second support rod is sleeved on the first support rod, the first adjustment plate is provided with two or more adjustment holes distributed in an annular array, the second adjustment plate is provided with adjustment protrusions, the adjustment The front part and the rear part of the second table board are provided with upwardly protruding blocking bars.

As a further improved technical solution, it also includes an adjusting screw, a knob and an adjusting spring, the adjusting screw is slidably connected with the connecting plate, the knob is threadedly connected with the adjusting screw, and the adjusting spring is sleeved on the adjusting screw On the screw rod, both ends of the adjustment spring are respectively connected with the knob and the adjustment screw rod.

The beneficial effects of the present invention are: the support outer tube is used to install the support inner tube, the handle is used for hand-holding, and when the handle moves, it can drive the pull rod to move up and down; The inclined chute on the shape piece drives the connecting pin to slide, the connecting pin is driven to move laterally by the inclined chute, the connecting pin drives the plug to move to the right, the plug is disconnected from the pin hole on the positioning strip, and the support inner tube can be connected to the support. The outer tube moves relatively, after manually moving the supporting inner tube, hold the supporting inner tube to make it still, manually push the handle down to reset, the pull rod drives the U-shaped piece to move down to move the latch to the left, the latch and the pin on the positioning bar The holes are connected, and at this time, the support inner tube cannot move relative to the support outer tube. The advantage of the present invention is that the connection or disconnection between the pin and the pin hole can be controlled only by controlling the handle, and after the pin is disconnected from the pin hole, the support inner tube can be moved up and down manually to change the height of the lifting table, without the need to bend over to extract or By installing the latch, the height of the lifting table can be adjusted in a standing position, which is convenient for adjustment.

Description of drawings

1 is a perspective view of a two-piece lift table of the present invention;

Fig. 2 is the sectional view of the two-piece lift table of the present invention;

Fig. 3 is the enlarged view of A part of Fig. 2;

Fig. 4 is the enlarged view of B part of Fig. 2;

FIG. 5 is an enlarged view of the C part of FIG. 2 .

Fig. 6 is the exploded view of the lifting mechanism of the present invention;

In the figure: lift mechanism 1, support outer tube 101, support inner tube 102, avoid through groove 1021, handle 103, pull rod 104, pull groove 1041, pull stud 105, U-shaped piece 106, inclined chute 1061, pull rod base 107 , horizontal chute 1071, empty slot 1072, vertical chute 1073, connecting pin 108, latch 109, positioning bar 110, scroll spring 111, ejector spring 112, lever spring 113, limit block 114, rubber pad 115, external Tube cover 116, card slot 117;

H-shaped bottom tube 2, first table board 3, second table board 4, connecting tube 5, fixing piece 6, first adjusting plate 7, adjusting hole 71, second adjusting plate 8, adjusting protrusion 81, first support Rod 9 , second support rod 10 , adjusting screw 11 , knob 12 , adjusting spring 13 .

Detailed ways

The present invention will be described in detail below with reference to specific embodiments.

Figure 6 is an embodiment of the lifting mechanism of the present invention, specifically:

A lifting mechanism 1 includes a support outer tube 101, a support inner tube 102, a handle 103, a pull rod 104, a U-shaped piece 106, a pull rod base 107, a connecting nail 108, a latch 109 and a positioning bar 110; the support outer tube 101 sleeved on the support inner tube 102; the positioning bar 110 is arranged between the support outer tube 101 and the support inner tube 102, the positioning bar 110 is connected with the support outer tube 101, and the positioning bar 110 is provided with more than two pin holes, and the pin holes are arranged vertically; the tie rod 104 and the U-shaped piece 106 are both arranged in the support inner tube 102, the tie rod base 107 and the support inner tube The bottom of 102 is connected; the handle 103 is connected with the pull rod 104, and the handle 103 is arranged above the support outer tube 101; the latch 109 is laterally slidably connected with the pull rod base 107 to support the inner tube 102 is provided with a hole for the pin 109 to pass through, and one end of the pin 109 passes through the inner support tube 102 and is inserted into the pin hole; the lower end of the pull rod 104 is connected with the U-shaped piece 106, so The U-shaped piece 106 is provided with an inclined chute 1061 whose left end is inclined upward, and the pull rod base 107 is provided with a transverse chute 1071 arranged horizontally; The other end of the 108 passes through the inclined chute 1061 and the transverse chute 1071 , and the connecting nail 108 is slidably connected to both the inclined chute 1061 and the transverse chute 1071 .

The use principle of the present invention is that the support outer tube 101 is used to install the support inner tube 102, the handle 103 is used for hand-holding, and when the handle 103 moves, it can drive the pull rod 104 to move up and down; when the pull rod 104 moves upward relative to the support inner tube 102, The pull rod 104 drives the U-shaped piece 106 to move up, the inclined chute 1061 on the U-shaped piece 106 drives the connecting pin 108 to slide, the connecting pin 108 is driven to move laterally by the inclined chute 1061, and the connecting pin 108 drives the latch 109 to move to the right, The plug pin 109 is disconnected from the pin hole on the positioning bar 110. At this time, the support inner tube 102 can move relative to the support outer tube 101. After manually moving the support inner tube 102, hold the support inner tube 102 to make it stationary, and hold it manually. Push down 103 to reset, and the pull rod 104 drives the U-shaped piece 106 to move down to the left to move the latch 109 to the left. The latch 109 is connected to the pin hole on the positioning bar 110. At this time, the support inner tube 102 cannot move relative to the support outer tube 101. . The advantage of the present invention is that only the handle 103 can be controlled to connect or disconnect the pin 109 with the pin hole, and after the pin 109 is disconnected from the pin hole, the support inner tube 102 can be moved up and down manually to change the height of the lift table without the need for By bending down to extract or install the latch 109, the height of the lifting table can be adjusted in a standing posture, which is convenient for adjustment.

In a preferred embodiment, a scroll spring 111 is also included, a hollow groove 1072 is formed at the bottom of the draw rod base 107 , and the lower part of the scroll spring 111 is set in the hollow groove 1072 and connected to the draw rod base 107 , the upper end of the scroll spring 111 is connected to the upper part of the support outer tube 101 , and the upper part of the scroll spring 111 is arranged between the support outer tube 101 and the support inner tube 102 . After the bolt 109 is disconnected from the pin hole, the pull rod base 107 can be lifted upward relative to the pull rod base 107 by the automatic winding power of the scroll spring 111, so the support inner tube 102 can be lifted upward by the pull rod base 107 without manual lifting, and the pull rod base 107 can The elevating mechanism is used for elevating the table, and can save labor when elevating the elevating table.

In a preferred embodiment, an ejection spring 112 is also included, and the ejection spring 112 is connected to the right end of the latch 109 and the pull rod base 107 , and the pull rod base 107 is provided with a vertical vertical sliding groove. 1073 , the connecting vertical chute 1073 is slidably connected with the U-shaped piece 106 . The function of the ejection spring 112 is to assist the bolt 109 to move to the left to connect with the positioning bar 110. When the height of the lifting table needs to be fixed, the bolt 109 needs to be moved to the left, and the force of the ejection spring 112 can push the bolt 109 to the left. The connecting pin 108 is slid downward to the right through the inclined chute 1061, and finally has the effect of automatically driving the pull rod 104 down and the handle 103 reset, without manually pressing the handle 103 to reset. The connecting vertical chute 1073 can limit the relative sliding track between the U-shaped piece 106 and the pull rod base 107 , so that the U-shaped piece 106 can move up and down smoothly, and the process of resetting the handle 103 by the ejector spring 112 is smoother.

In order to enable the handle 103 to automatically reset, as an optional embodiment, it further includes a pull stud 105, a pull rod spring 113 and a limit block 114, the pull stud 105 is connected to the inner support tube 102, and the pull rod 104 is provided with A vertical pull slot 1041, the pull stud 105 is vertically slidably connected to the pull slot 1041; the limit block 114 is connected to the pull rod 104, and the limit block 114 is arranged on the pull stud 105 Below, the pull rod spring 113 is sleeved on the pull rod 104 , and the upper end and the lower end of the pull rod spring 113 are respectively connected with the pull stud 105 and the limiting block 114 . The handle 103 can move up and down in the avoidance through groove 1021. The pull stud 105 and the pull groove 1041 are used to limit the relative movement distance between the pull rod 104 and the support inner tube 102. When the handle 103 pulls the pull rod 104 to move up, the limit block 114 compresses the pull rod spring 113, so that the pull rod 104 and the support inner tube 102 have kinetic energy of reset. After the handle 103 is released, the handle 103 can automatically reset relative to the support inner tube 102.

In some embodiments, a rubber pad 115 and an outer tube cover 116 are further included. The rubber pads 115 are arranged between the support outer tube 101 and the support inner tube 102 , and the rubber pad 115 is arranged on the inner side of the positioning bar 110 . Yes, the rubber pad 115 is connected with the positioning bar 110 , and the outer tube cover 116 is arranged on the top of the support outer tube 101 and connected with the rubber pad 115 . The rubber pad 115 is used to fix the distance between the support outer tube 101 and the support inner tube 102, avoid shaking during the up and down movement of the support inner tube 102, and at the same time prevent the support outer tube 101 and the support inner tube 102 from colliding, and the outer tube cover 116 can play a dustproof and decorative role.

In order to limit the position of the scroll spring 111 , in a preferred embodiment, a clamping groove 117 is further included, and the clamping groove 117 is provided between the support outer tube 101 and the support inner tube 102 . The support inner tube 102 is connected, and the upper end of the scroll spring 111 passes through the card slot 117 . During the unwinding and rewinding process of the scroll spring 111 , the clamping groove 117 can limit the position of the upper portion of the Weijuan spring, so as to prevent the upper portion of the scroll spring 111 from being skewed.

As shown in Figures 1 to 5, it is an embodiment of the two-piece lift table of the present invention, specifically:

The present invention also provides a two-piece lifting table, which includes the lifting mechanism 1, and also includes an H-shaped bottom pipe 2, a first table board 3, a second table board 4, a connecting pipe 5 and a fixing piece 6. The said The connecting pipe 5 is connected to the upper part of the inner support pipe 102 , the H-shaped bottom pipe 2 is connected to the bottom of the outer support pipe 101 , and the first table board 3 is connected to the connecting pipe through the fixing piece 6 5 is connected, the second table board 4 and the first table board 3 are rotatably connected. The H-shaped floor pipe has high stability, the lifting mechanism 1 can lift the first table board 3 and the second table board 4 together, and the angle between the first table board 3 and the second table board 4 can be adjusted so that the The two-piece lift table is more convenient to use. The connection between the connecting pipe 5 and the upper part of the supporting inner pipe 102 can be detachably connected, so that the lifting mechanism 1 can be connected with different table boards.

As a further preferred embodiment, it also includes a first adjustment plate 7, a second adjustment plate 8, a first support rod 9 and a second support rod 10, the first support rod 9 and the second support rod 10 are respectively connected with the The first table board 3 and the second table board 4 are connected, the first adjustment plate 7 and the second adjustment plate 8 are respectively connected with the first support rod 9 and the second support rod 10, the fixed The sheet 6 is connected with the first support rod 9, the second support rod 10 is sleeved on the first support rod 9, and the first adjustment plate 7 is provided with two or more adjustment holes distributed in an annular array 71, the second adjustment plate 8 is provided with an adjustment protrusion 81, the adjustment protrusion 81 is snapped with the adjustment hole 71; the front and rear of the second table board 4 are provided with upward protrusions starting file. By pulling the second support rod 10 laterally, the second adjustment plate 8 can be pulled, so that the second adjustment plate 8 is connected or disconnected from the first adjustment plate 7. After the second adjustment plate 8 is disconnected from the first adjustment plate 7, The second support rod 10 and the second adjusting plate 8 can be rotated by rotating the second table plate 4, and then the second table plate 4 can be translated so that the second adjusting plate 8 and the first adjusting plate 7 are connected to each other, so as to adjust the protrusion 81. It is connected with the adjustment hole 71 to achieve the effect of adjusting the angle of the second table board 4 . The rails can be used to place books for easy reading.

In a preferred embodiment, it also includes an adjusting screw 11 , a knob 12 and an adjusting spring 13 . One end of the adjusting screw 11 passes through the second adjusting plate 8 and the connecting pipe 5 in sequence and is then threadedly connected to the knob 12 , the adjusting spring 13 is sleeved on the adjusting screw 11 , and the two ends of the adjusting spring 13 are respectively connected with the knob 12 and the adjusting screw 11 . The knob 12 can tighten the adjustment screw 11 to the left, so that the adjustment screw 11 can pull the second adjustment plate 8 closer to the first adjustment plate 7 to prevent the second adjustment plate 8 from loosening. plate 8.

The above-described embodiments and features in the embodiments may be combined with each other without conflict.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit the protection scope of the present invention. Persons should understand that the technical solutions of the present invention may be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.

Claims (9)

1. A kind of lifting gearing, its characterized in that: comprises an outer supporting pipe, an inner supporting pipe, a handle, a pull rod, a U-shaped sheet, a pull rod base, a connecting nail, a plug pin and a positioning strip;

the supporting outer pipe is sleeved on the supporting inner pipe;

the positioning strip is arranged between the support outer pipe and the support inner pipe and is connected with the support outer pipe, more than two pin holes are formed in the positioning strip, and the pin holes are vertically arranged;

the pull rod and the U-shaped sheet are both arranged in the support inner tube, and the pull rod base is connected with the bottom of the support inner tube;

the handle is connected with the pull rod and arranged above the supporting outer tube;

the bolt is connected with the pull rod base in a transverse sliding mode, the supporting inner tube is provided with a hole for the bolt to pass through, and one end of the bolt passes through the supporting inner tube and then is inserted into the pin hole;

the lower end of the pull rod is connected with the U-shaped piece, an inclined sliding groove with the left end inclined upwards is formed in the U-shaped piece, and a transverse sliding groove is formed in the pull rod base in a transverse mode;

one end of the connecting nail is connected with the bolt, the other end of the connecting nail penetrates through the inclined sliding groove and the transverse sliding groove, and the connecting nail is connected with the inclined sliding groove and the transverse sliding groove in a sliding mode.

2. The lift mechanism of claim 1, wherein: the pull rod is characterized by further comprising a volute spiral spring, the bottom of the pull rod base is provided with a hollow groove, the lower portion of the volute spiral spring is arranged in the hollow groove and connected with the pull rod base, the upper end of the volute spiral spring is connected with the upper portion of the supporting outer pipe, and the upper portion of the volute spiral spring is arranged between the supporting outer pipe and the supporting inner pipe.

3. The lift mechanism of claim 1, wherein: the ejection spring is connected with the right end of the bolt and the pull rod base; the pull rod base is provided with a vertical sliding groove which is vertically arranged, and the connecting vertical sliding groove is connected with the U-shaped sheet in a sliding manner.

4. The lift mechanism of claim 1, wherein: the pull nail, the pull rod spring and the limiting block are also included;

an avoidance through groove is formed in the support inner pipe, and the handle is arranged in the avoidance through groove;

the blind rivet is connected with the supporting inner tube, the pull rod is provided with a pull groove which is vertically arranged, the blind rivet is vertically connected with the pull groove in a sliding way,

the limiting block is connected with the pull rod, the limiting block is arranged below the blind rivet, the pull rod spring is sleeved on the pull rod, and the upper end and the lower end of the pull rod spring are respectively connected with the blind rivet and the limiting block.

5. The lift mechanism of claim 1, wherein: still include cushion and outer tube cap, the cushion is all located support between outer tube and the support inner tube, the cushion is located the inboard of location strip, the cushion with the location strip is connected, the outer tube cap is located support the top of outer tube and with the cushion is connected.

6. The lift mechanism of claim 1, wherein: the spiral spring support is characterized by further comprising a clamping groove, the clamping groove is formed between the support outer pipe and the support inner pipe and is connected with the support inner pipe, and the upper end of the spiral spring penetrates through the clamping groove.

7. A two formula lift tables, its characterized in that: the lifting mechanism comprises the lifting mechanism as claimed in claim 1, and further comprises an H-shaped bottom pipe, a first table plate, a second table plate, a connecting pipe and a fixing plate, wherein the connecting pipe is connected with the upper part of the supporting inner pipe, the H-shaped bottom pipe is connected with the bottom of the supporting outer pipe, the first table plate is connected with the connecting pipe through the fixing plate, and the second table plate is rotatably connected with the first table plate.

8. The two-piece elevating table as set forth in claim 6, wherein: the adjustable table is characterized by further comprising a first adjusting plate, a second adjusting plate, a first supporting rod and a second supporting rod, wherein the first supporting rod and the second supporting rod are respectively connected with the first table plate and the second table plate, the first adjusting plate and the second adjusting plate are respectively connected with the first supporting rod and the second supporting rod, the fixing plate is connected with the first supporting rod, the second supporting rod is sleeved on the first supporting rod, more than two adjusting holes distributed in an annular array mode are formed in the first adjusting plate, adjusting protrusions are arranged on the second adjusting plate, and the adjusting protrusions are clamped in the adjusting holes; the front part and the rear part of the second table plate are both provided with upwards-raised stop bars.

9. The two-piece elevating table as set forth in claim 7, wherein: still include adjusting screw, knob and adjusting spring, adjusting screw with connecting plate sliding connection, the knob with adjusting screw threaded connection, the adjusting spring cover is established adjusting screw is last, adjusting spring's both ends respectively with the knob with adjusting screw connects.

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