Buffering type leg support hinge

Abstract

The utility model discloses a buffering type leg support hinge which comprises a first hinge plate and two first fixing plates, the first fixing plates are fixedly installed on the upper surface of the first hinge plate, the side walls of the opposite sides of the two first fixing plates are both rotationally connected with second fixing plates, and the second fixing plates are fixedly installed on the upper surface of the first hinge plate. And fixing shafts are inserted between the two first fixing plates and the two second fixing plates, and second hinge plates are fixedly installed on the side walls of the sides, away from the first fixing plates, of the two second fixing plates. According to the leg support, through mutual cooperation of the first hinge plate, the second hinge plate, the extension plate, the mounting base, the fixing cylinder, the sliding rod, the limiting plate, the sliding block, the clamping plate, the spring and other parts, the function of buffering the hinge is achieved, buffering is carried out when the hinge is closed, the leg support has the process of slowly descending, and the leg support is convenient to use. Therefore, the injury condition of the wounded person is prevented from being aggravated or the legs of the old person are prevented from being injured, and the practicability and safety of the leg support are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to leg support hinge technical field especially, it relates to buffer type leg support hinge. BACKGROUND

[0002] Leg support, this component not only is common in wheelchair design, is also an integral part of automobile seat, its core function lies in expanding the support range of passenger's leg, thereby optimizing the riding experience, and leg support hinge is the component connecting leg support and seat, the leg support that is all installed on the automobile seat is electric, and most of the ordinary push-off are installed on the wheelchair, but no matter which leg support, in the using process, is all in cooperation with hinge to complete relevant action, and hinge assembly is mainly composed of two groups of rotating plates.

[0003] Patent publication number CN218815873U, the utility model discloses electric leg support hinge assembly belongs to electric leg support hinge technical field, be equipped with fixed shaft on the first hinge rotating plate, be equipped with the shaft sleeve on the second hinge rotating plate, and the shaft sleeve is sleeved on the fixed shaft, and the second hinge rotating plate is fixedly connected with the lubricating grease placing box, and the bottom of lubricating grease placing box is rotatably connected with rubber lubricating roller, and rubber lubricating roller is attached to fixed shaft, and the bottom of lubricating grease placing box is provided with oil outlet, the utility model relates to electric leg support hinge assembly, and the electric leg support hinge assembly can automatically realize the lubrication of fixed shaft and shaft sleeve part, thereby reducing the abrasion of fixed shaft and shaft sleeve part, prolongs the service life of electric leg support hinge assembly, is favorable for reducing the maintenance of electric leg support hinge assembly, and guarantees the stability of electric leg support use.

[0004] In the above patent, although the hinge on the leg support can be lubricated, but when the hinge is closed, the hinge cannot be buffered, especially the hinge installed on the wheelchair leg support, when the hinge is released, the leg support is directly folded down, and the users who generally use the leg support on the wheelchair are mostly injured or old people, and when the leg support does not slowly descend, the injury of the injured person is easily aggravated or the leg of the old person is injured, which reduces the practicability and safety of the leg support. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art and provides a buffer type leg support hinge.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: buffer type leg support hinge, including first hinge plate and first fixed plate, the first fixed plate fixed mounting is at the upper surface of first hinge plate, the number of first fixed plate is two, and the opposite side wall of two first fixed plates is rotatably connected with second fixed plate, and the fixed shaft is inserted between two first fixed plates and two second fixed plates, the side wall of the two second fixed plates away from first fixed plate is fixedly installed with second hinge plate, the front and back two side walls of first hinge plate and second hinge plate are all fixedly installed with extension plate, the upper surface of two extension plates on first hinge plate is all fixedly installed with mounting seat, the inner wall of mounting seat is rotatably connected with receiving cylinder, the one end of receiving cylinder away from mounting seat is inserted with slide rod, the side wall of two extension plates on second hinge plate is all fixedly installed with two limit plates, the one end of slide rod away from receiving cylinder is fixedly installed with sliding block, the one end of slide rod in receiving cylinder is fixedly installed with clamping plate, the inside of receiving cylinder is provided with spring, the side wall of extension plate on first hinge plate and second hinge plate is all seted up with mounting hole, and the side wall of first hinge plate and second hinge plate is all provided with support assembly.

[0007] As further description of the above technical scheme:

[0008] The side wall of the limit plate is provided with a sliding groove, and the sliding block is slidably connected with the inner wall of the sliding groove.

[0009] As further description of the above technical scheme:

[0010] The clamping plate is slidably connected with the inner wall of the receiving cylinder, one end of the spring is fixedly connected with the inner wall of the receiving cylinder, and the other end of the spring is fixedly connected with the clamping plate.

[0011] As further description of the above technical scheme:

[0012] The side wall of the second hinge plate is fixedly installed with two positioning plates, the opposite side wall of two positioning plates is rotatably connected with a rotating block, two threaded rods are fixedly installed on both sides of the rotating block, two sliding cylinders are sleeved on the outer surfaces of two threaded rods, two fixed sleeves are fixedly installed on the opposite side walls of two second fixed plates, two sliding cylinders are slidably connected with the inner walls of two fixed sleeves respectively, two sliding cylinders all pass through one side of the second fixed plate and extend to the other side of the second fixed plate, and two limit blocks are fixedly installed on the outer surfaces of two sliding cylinders.

[0013] As further description of the above technical scheme:

[0014] The outer surfaces of the two threaded rods are respectively provided with forward threads and reverse threads, the inner walls of the two sliding cylinders are respectively provided with thread grooves matched with the two threaded rods, the outer surface of the fixing sleeve is provided with a limiting groove, the limiting block is in sliding connection with the inner wall of the limiting groove, and the side walls of the two first fixing plates are provided with limiting holes matched with the sliding cylinders.

[0015] As a further description of the above technical solutions:

[0016] The support assembly comprises receiving grooves and support plates, the number of the receiving grooves is two, the receiving grooves are respectively arranged on the side walls of the first hinge plate and the second hinge plate away from each other, the inner walls of the two receiving grooves are both in sliding connection with the support plates, the two sides of the two support plates are both fixedly provided with clamping blocks, and the inner walls of the two receiving grooves are both provided with two clamping grooves.

[0017] As a further description of the above technical solutions:

[0018] The clamping blocks are in sliding connection with the inner walls of the clamping grooves, the side walls of the first hinge plate and the second hinge plate away from the receiving grooves are both in threaded connection with fixing bolts, the two fixing bolts both penetrate through the side walls of the first hinge plate and the second hinge plate and extend into the interiors of the receiving grooves, the side walls of the two support plates close to the receiving grooves are both provided with fixing holes, and the fixing bolts are matched with the fixing holes.

[0019] The utility model has the advantages of the following beneficial effects:

[0020] 1. Compared with the prior art, the buffer type leg support hinge is provided with the first hinge plate, the first fixing plate, the second fixing plate, the fixing shaft, the second hinge plate, the extension plate, the mounting seat, the fixing cylinder, the sliding rod, the limiting plate, the sliding block, the clamping plate and the spring, and the hinge is buffered, the leg support has a slow descending process, the injury of the injured person is avoided from being aggravated or the leg of the old person is prevented from being injured, and the practicality and safety of the leg support are improved.

[0021] 2. Compared with the prior art, the buffer type leg support hinge is provided with the receiving groove, the support plate, the clamping block, the clamping groove and the fixing bolt, the support effect of the hinge on the leg support is improved, the contact area of the hinge and the leg support is improved by arranging the support plate, the connection between the leg support and the hinge is prevented from being damaged, and the safety of the leg support is further improved on the basis of the original. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a three-dimensional structure schematic view of the buffer type leg support hinge.

[0023] Figure 2 Structure diagram of the fixed cylinder of the buffer type leg support hinge provided by the utility model;

[0024] Figure 3 Structure diagram of the buffer type leg support hinge provided by the utility model; Figure 2 Enlarged view of A in the middle;

[0025] Figure 4 Structure diagram of the sliding cylinder of the buffer type leg support hinge provided by the utility model;

[0026] Figure 5 Structure diagram of the buffer type leg support hinge provided by the utility model; Figure 4 Enlarged view of B in the middle;

[0027] Figure 6 Structure diagram of the support assembly of the buffer type leg support hinge provided by the utility model;

[0028] Figure 7 Structure diagram of the storage groove of the buffer type leg support hinge provided by the utility model.

[0029] Legend:

[0030] 1, first hinge plate; 2, first fixed plate; 3, second fixed plate; 4, fixed shaft; 5, second hinge plate; 6, extension plate; 7, mounting seat; 8, fixed cylinder; 9, sliding rod; 10, limiting plate; 11, sliding block; 12, clamping plate; 13, spring; 14, positioning plate; 15, rotating block; 16, threaded rod; 17, sliding cylinder; 18, storage cylinder; 19, limiting block; 20, storage groove; 21, support plate; 22, clamping block; 23, clamping groove; 24, fixed bolt. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0032] With reference to Figures 1 to 7 The buffer type leg support hinge provided by the utility model has the advantages that the first fixed plate 2 is fixedly installed on the upper surface of the first hinge plate 1, the number of the first fixed plate 2 is two, the opposite side walls of the two first fixed plates 2 are both rotationally connected with the second fixed plate 3, the fixed shaft 4 is inserted between the two first fixed plates 2 and the two second fixed plates 3, and the side wall, away from the first fixed plate 2, of the second fixed plate 3 is fixedly installed with the second hinge plate 5.

[0033] In order to achieve the buffering when the hinge is closed, the front and rear two side walls of the first hinge plate 1 and the second hinge plate 5 are fixedly installed with the extension plates 6, the upper surfaces of the two extension plates 6 on the first hinge plate 1 are fixedly installed with the mounting seats 7, the inner wall of the mounting seat 7 is rotationally connected with the receiving barrel 8, one end of the receiving barrel 8 away from the mounting seat 7 is inserted with the sliding rod 9, the side walls of the two extension plates 6 on the second hinge plate 5 are fixedly installed with the two limiting plates 10, one end of the sliding rod 9 away from the receiving barrel 8 is fixedly installed with the sliding block 11, the side wall of the limiting plate 10 is provided with the sliding groove, the sliding block 11 is slidingly connected with the inner wall of the sliding groove, one end of the sliding rod 9 inside the receiving barrel 8 is fixedly installed with the clamping plate 12, the clamping plate 12 is slidingly connected with the inner wall of the receiving barrel 8, the inside of the receiving barrel 8 is provided with the spring 13, one end of the spring 13 is fixedly connected with the inner wall of the receiving barrel 8, the other end of the spring 13 is fixedly connected with the clamping plate 12, and the side wall of the extension plate 6 on the first hinge plate 1 and the second hinge plate 5 is provided with the mounting hole.

[0034] In order to fix the hinge, the side wall of the second hinge plate 5 is fixedly installed with the two positioning plates 14, the opposite side walls of the two positioning plates 14 are rotationally connected with the rotating block 15, the two sides of the rotating block 15 are fixedly installed with the two threaded rods 16, the outer surfaces of the two threaded rods 16 are respectively provided with the forward thread and the reverse thread, the outer surfaces of the two threaded rods 16 are respectively sleeved with the sliding barrels 17, the inner walls of the two sliding barrels 17 are respectively provided with the thread grooves matched with the two threaded rods 16, the opposite side walls of the two second fixed plates 3 are fixedly installed with the fixed sleeves 18, the two sliding barrels 17 are respectively slidingly connected with the inner walls of the two fixed sleeves 18, the two sliding barrels 17 respectively penetrate through the side of the second fixed plate 3 and extend to the other side of the second fixed plate 3, the outer surfaces of the two sliding barrels 17 are fixedly installed with the limiting blocks 19, the outer surface of the fixed sleeve 18 is provided with the limiting groove, the limiting block 19 is slidingly connected with the inner wall of the limiting groove, and the side walls of the two first fixed plates 2 are provided with the limiting holes matched with the sliding barrels 17.

[0035] Through the first hinge plate 1, the first fixed plate 2, the second fixed plate 3, the fixed shaft 4, the second hinge plate 5, the extension plate 6, the mounting seat 7, the receiving barrel 8, the sliding rod 9, the limiting plate 10, the sliding block 11, the clamping plate 12, the spring 13, the positioning plate 14, the rotating block 15, the threaded rod 16, the sliding barrel 17, the fixed sleeve 18 and the limiting block 19, the buffering function of the hinge is realized, the buffering when the hinge is closed is realized, the slow descending process of the leg support is realized, the injury of the injured person is avoided or the leg of the old person is prevented from being injured, and the practicability and safety of the leg support are improved.

[0036] The side wall of the first hinge plate 1 and the second hinge plate 5 is provided with a support assembly, the support assembly comprises a receiving groove 20 and a support plate 21, the number of the receiving groove 20 is two, the two receiving grooves 20 are respectively arranged on the spring 13, the side wall of the first hinge plate 1 and the second hinge plate 5 away from each other, the inner wall of the two receiving grooves 20 is slidably connected with the support plate 21, the two sides of the two support plates 21 are fixedly installed with the clamping block 22, the inner wall of the two receiving grooves 20 is provided with two clamping grooves 23, the clamping block 22 is slidably connected with the inner wall of the clamping groove 23, the side wall of the first hinge plate 1 and the second hinge plate 5 away from the receiving groove 20 is threadedly connected with the fixing bolt 24, the two fixing bolts 24 are respectively arranged on the side wall of the first hinge plate 1 and the second hinge plate 5 and extend into the interior of the receiving groove 20, the side wall of the two support plates 21 close to the receiving groove 20 is provided with a fixing hole, and the fixing bolt 24 is inserted into the fixing hole.

[0037] The receiving groove 20, the support plate 21, the clamping block 22, the clamping groove 23 and the fixing bolt 24 are arranged, the contact area of the hinge and the leg support is increased, so that the connection between the leg support and the hinge is prevented from being damaged, and the safety of the leg support is further improved on the basis of the original.

[0038] Working principle: after the hinge is used to install the leg support on the wheelchair, the fixing bolt 24 is rotated to be removed from the fixing hole, the fixing of the support plate 21 is released, then the support plate 21 is pulled to slide out of the interior of the receiving groove 20, the clamping block 22 is slid in the clamping groove 23, when the support plate 21 slides out of the appropriate length, the fixing bolt 24 is reversely rotated to fix the support plate 21 again, the above operation improves the support effect of the hinge on the leg support.

[0039] When the leg support is used, the rotating block 15 is rotated to make the rotating block 15 rotate between the two positioning plates 14, and the two threaded rods 16 are rotated, and under the cooperation of the threaded grooves, the limiting blocks 19 and the limiting grooves, the two sliding cylinders 17 slide along the inner wall of the fixed sleeve 18 to the position of the rotating block 15, when the sliding cylinder 17 slides out of the limiting hole, the fixing of the hinge is released, under the action of gravity, the leg support starts to descend, and the hinge starts to close, in the process of closing the hinge, the first hinge plate 1 and the second hinge plate 5 approach each other, the end of the sliding rod 9 away from the storage cylinder 8 slides along the limiting plate 10 to the direction of the first hinge plate 1, the sliding block 11 slides in the sliding groove, when the sliding block 11 slides to the end of the sliding groove, the end of the sliding rod 9 close to the storage cylinder 8 slides to the inside of the storage cylinder 8, the clamping plate 12 slides in the inside of the storage cylinder 8, and the clamping plate 12 starts to press the spring 13, so that the spring 13 is contracted, under the action of the elastic force of the spring 13, the sliding rod 9 is pushed by the clamping plate 12, so as to buffer the mutual approach of the first hinge plate 1 and the second hinge plate 5, so as to complete the buffering of the closing of the hinge, so that the leg support has a slow descending process when the leg support is retracted.

[0040] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. made within the spirit and principles of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A cushioned legrest hinge comprising a first hinge plate (1) and a first fixed plate (2), characterized in that: The first fixed plate (2) is fixedly installed on the upper surface of the first hinge plate (1), the number of the first fixed plate (2) is two, the opposite side walls of the two first fixed plates (2) are rotatably connected with the second fixed plate (3), the two first fixed plates (2) and the two second fixed plates (3) are inserted with the fixed shaft (4), the side walls of the two second fixed plates (3) away from the first fixed plate (2) are fixedly installed with the second hinge plate (5), the front and rear side walls of the first hinge plate (1) and the second hinge plate (5) are fixedly installed with the extension plate (6), the upper surfaces of the two extension plates (6) on the first hinge plate (1) are fixedly installed with the mounting seat (7), the inner wall of the mounting seat (7) is rotatably connected with the receiving cylinder (8), one end of the receiving cylinder (8) away from the mounting seat (7) is inserted with the sliding rod (9), the side walls of the two extension plates (6) on the second hinge plate (5) are fixedly installed with the two limiting plates (10), one end of the sliding rod (9) away from the receiving cylinder (8) is fixedly installed with the sliding block (11), one end of the sliding rod (9) inside the receiving cylinder (8) is fixedly installed with the clamping plate (12), the inside of the receiving cylinder (8) is provided with the spring (13), one side of the extension plate (6) on the first hinge plate (1) and the second hinge plate (5) is provided with the mounting hole, and one side of the first hinge plate (1) and the second hinge plate (5) is provided with the supporting assembly.

2. The cushioned legrest hinge of claim 1, wherein: The side wall of the limiting plate (10) is provided with a sliding groove, and the sliding block (11) is slidably connected with the inner wall of the sliding groove.

3. The cushioned legrest hinge of claim 1, wherein: The clamping plate (12) is slidably connected with the inner wall of the receiving cylinder (8), one end of the spring (13) is fixedly connected with the inner wall of the receiving cylinder (8), and the other end of the spring (13) is fixedly connected with the clamping plate (12).

4. The cushioned legrest hinge of claim 1, wherein: The side wall of the second hinge plate (5) is fixedly installed with the two positioning plates (14), the opposite side walls of the two positioning plates (14) are rotatably connected with the rotating block (15), the two sides of the rotating block (15) are fixedly installed with the two threaded rods (16), the outer surfaces of the two threaded rods (16) are sleeved with the sliding cylinder (17), the opposite side walls of the two second fixed plates (3) are fixedly installed with the fixed sleeve (18), the inner walls of the two fixed sleeves (18) are slidably connected with the two sliding cylinders (17), the two sliding cylinders (17) penetrate through one side of the second fixed plate (3) and extend to the other side of the second fixed plate (3), and the outer surfaces of the two sliding cylinders (17) are fixedly installed with the limiting block (19).

5. The cushioned legrest hinge of claim 4, wherein: The outer surfaces of the two threaded rods (16) are respectively provided with forward threads and reverse threads, the inner walls of the two sliding cylinders (17) are respectively provided with thread grooves matched with the two threaded rods (16), the outer surface of the fixed sleeve (18) is provided with a limiting groove, the limiting block (19) is slidably connected with the inner wall of the limiting groove, and the side walls of the two first fixed plates (2) are provided with limiting holes matched with the sliding cylinder (17).

6. The cushioned legrest hinge of claim 1, wherein: The support assembly comprises receiving grooves (20) and support plates (21), the number of the receiving grooves (20) is two, the two receiving grooves (20) are respectively arranged on the side walls away from the first hinge plate (1) and the second hinge plate (5), and the inner walls of the two receiving grooves (20) are slidably connected with the support plates (21); the two sides of the two support plates (21) are fixedly installed with clamping blocks (22), and the inner walls of the two receiving grooves (20) are provided with two clamping grooves (23).

7. The cushioned legrest hinge of claim 6, wherein: The clamping blocks (22) are slidably connected with the inner walls of the clamping grooves (23), the side walls of the first hinge plate (1) and the second hinge plate (5) away from the receiving grooves (20) are threadedly connected with fixing bolts (24), the two fixing bolts (24) penetrate through the side walls of the first hinge plate (1) and the second hinge plate (5) and extend into the interiors of the receiving grooves (20), and the side walls of the two support plates (21) close to the receiving grooves (20) are provided with fixing holes, and the fixing bolts (24) are inserted into the fixing holes.

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