Improved kneecap

Abstract

The utility model discloses an improved kneecap. The improved kneecap comprises a left kneecap and a right kneecap, each of the left knee pad and the right knee pad comprises a supporting frame, a soft cushion assembly, a fixing assembly and a storage device; the supporting frame comprises an inner side metal pipe and an outer side metal pipe. The soft cushion assembly comprises a buffering cushion and a seat cushion; the fixing assembly comprises a knee fixing piece and an ankle fixing piece; the storage device is arranged on the outer side metal pipe; rollers are arranged on the bottom surfaces of the sides, close to the head ends, of the inner side metal tube and the outer side metal tube; a brake device is arranged on the bottom face of the buffering cushion, the centers of the roller skates of the inner side metal pipe, the roller skates of the outer side metal pipe and the brake device form a triangular structure, the brake device comprises a hollow semi-sphere, an opening of the hollow semi-sphere faces the horizontal ground, the hollow semi-sphere is made of hard materials, and the thickness of the hollow semi-sphere is at least 1 cm. The knee-bending protection device can provide additional support and protection for the knee joints of a knee-bending operator, reduces sprain possibly occurring in the working process, and can absorb part of downward body pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture, and more specifically, to an improved knee pad. Background Art

[0002] Knee pads are designed specifically for people who need to work on their knees for a long time, such as house decoration, floor paving, skirting board construction, etc. This device can effectively relieve the pain and discomfort of the operator's knees and improve work efficiency; it usually includes a curved knee pad plate that matches the shape of the knee and calf, and elastic straps are provided on both sides of the knee pad plate for fixing on the calf; in order to facilitate the operator to move during work, a rolling component is installed at the bottom of the knee pad plate, including a universal wheel and two straight wheels, and the universal wheel and the straight wheels are distributed in an isosceles triangle on the bottom surface of the knee pad plate, making the movement of the knee pad plate more stable and convenient; in addition, a buffer plate with a matching shape is provided on the upper surface of the knee pad plate, which is covered with a soft cushion to provide additional comfort and support.

[0003] Chinese Patent Application Document 1 (Authorization Publication Number: CN212789721U, Authorization Publication Date: March 26, 2021) discloses a knee pad skateboard device for protecting the human knee. See Figure 1 As shown, the knee pad skateboard devices are in a group of two, and each consists of an arcuate seat part, a foam 2' and a universal wheel 3'. The arcuate seat part includes: an arcuate plate 1', a load-bearing column, a reinforcing rib, a protective plate and a fixing strap 9'. A reinforcing rib is provided at the bottom of the arcuate plate 1', load-bearing columns are respectively provided on both sides of the arcuate plate 1', a protective plate is provided on the outer side of the load-bearing column, a foam 2' is adhesively provided above the arcuate plate 1', and universal wheels 3' are respectively provided at both ends of the lower part of each load-bearing column. A hole cover and a fixing strap 9' are provided above the load-bearing column; during use, the two knees are respectively kneeled on the foams 2' of the two knee pad skateboard devices and fixed with the fixing strap 9', and the human body can slide freely on the floor; this knee pad skateboard device lacks a braking device and can only rely on the user to brake manually with the foot. When the user is working, it may be inconvenient to apply force to brake with the rear foot due to the front side of the body, and it is easy to slip, and the user's legs may go numb after long-term use of this knee pad skateboard device.

[0004] Chinese Patent Application Document 2 (Authorization Publication Number: CN214127107U, Authorization Publication Date: September 7, 2021) discloses a kneeling construction mobile device, which includes a base. The bottom surface of the base is connected with universal wheels. A groove is provided on the top surface of the base. A clamping strip is arranged behind the groove. A knee pad clamping plate is embedded in the groove. A clamping groove is provided at the rear of the bottom of the knee pad clamping plate. The clamping groove is adaptively connected with the clamping strip. A binding strap is arranged on the top surface of the clamping groove. The base and the knee pad are embedded in the groove of the base through the cooperation of the clamping strip and the clamping groove, and then the assembled device is tied and fixed to the knees and legs of the constructor with the binding strap, and then the construction can start. The kneeling construction mobile device is only convenient for moving, lacks a storage device, and only relies on sliding the universal wheels to pick up tools. Moreover, the base is hard, which requires too high a bearing capacity for the knee joint and is not conducive to the long-term health of the knee joint.

[0005] Chinese Patent Application Document 3 (Authorization Publication Number: CN210189760U, Authorization Publication Date: March 27, 2020) discloses a knee pad wheelbarrow, which includes a seat plate for supporting the knee. A plurality of universal wheel components are provided on the lower surface of the seat plate. The universal wheel components include: a wheel body, a wheel shaft, a wheel frame and a plug-in member. The knee pad wheelbarrow further includes a flexible cushion layer for buffering and a fixing member for fixing the calf. The knee pad wheelbarrow lacks a braking device, and the user is prone to slipping; and lacks tool storage, and the user needs to get up or slide to pick up equipment; and lacks an anti-leg numbness mechanism to prevent the user's legs from becoming numb after long-term use and being unable to complete the actions of getting up and kneeling.

[0006] Therefore, providing an improved knee pad that can not only prevent the user from slipping, but also reduce the sliding frequency of the user, improve the work efficiency of the user, and at the same time prevent the user from being accidentally injured and meeting the higher requirements for use comfort is a technical problem that urgently needs to be solved in this field. Summary of the Utility Model

[0007] In view of this, the present utility model provides an improved knee pad, which includes a left knee pad and a right knee pad arranged oppositely;

[0008] Both the left knee pad and the right knee pad include a support frame, a soft pad assembly, a fixing assembly and a storage device;

[0009] The support frame includes an inner metal tube and an outer metal tube which are oppositely arranged. The inner metal tube and the outer metal tube are parallel to each other and have a gap of at least 15 cm. Along the direction perpendicular to the left knee pad and pointing to the right knee pad, both the inner metal tube and the outer metal tube include a tube body horizontal section, a tube body middle section and a tube body inclined section which are sequentially connected. A J-shaped structure is formed among the tube body horizontal section, the tube body middle section and the tube body inclined section. The tube body horizontal section, the tube body middle section and the tube body inclined section are all hollow tubes. A connecting tube is connected between the inner metal tube and the outer metal tube, and the length extending direction of the connecting tube intersects with the length extending direction of the inner metal tube.

[0010] The soft pad assembly includes a buffer pad and a seat cushion. The connecting tube includes a head end connecting tube, an inclined section connecting tube and a hook end connecting tube. The head end connecting tube, the inclined section connecting tube and the hook end connecting tube are all hollow tubes. The buffer pad is connected to the head ends between the inner metal tube and the outer metal tube through the head end connecting tube, and the seat cushion is connected to the hook ends between the inner metal tube and the outer metal tube through the inclined section connecting tube and the hook end connecting tube. The materials of both the buffer pad and the seat cushion include sponge fillers.

[0011] The fixing assembly includes a knee fixing piece and an ankle fixing piece. The knee fixing piece is arranged on the head end side corresponding to the buffer pad between the inner metal tube and the outer metal tube, and the ankle fixing piece is arranged on the hook end side corresponding to the seat cushion between the inner metal tube and the outer metal tube.

[0012] The storage device is arranged on the side of the outer metal tube away from the inner metal tube.

[0013] Rollers are arranged on the bottom surfaces of the inner metal tube and the outer metal tube near the head end side.

[0014] A braking device is arranged on the bottom surface of the buffer pad away from the seat cushion. The centers of the rollers of the inner metal tube, the rollers of the outer metal tube and the braking device form a triangular structure. The braking device includes a hollow semi-sphere, the opening of the hollow semi-sphere faces the horizontal ground, the hollow semi-sphere is made of a hard material, and the thickness of the hollow semi-sphere is at least 1 cm.

[0015] Compared with the prior art, the improved knee pad provided by the present utility model has at least achieved the following beneficial effects:

[0016] The improved knee protection device provided by this embodiment can provide additional support and protection for the knees of workers in a kneeling position, reduce the sprains that may occur during work, absorb part of the downward body pressure, reduce direct damage to the knees, help stabilize the knee joints, and reduce the risk of injuries caused by joint instability; it can provide an additional soft cushion to reduce the discomfort during long-term work. Further, the cushion design helps maintain a correct sitting posture, supports the natural curve of the spine, prevents back and neck pain, reduces the pressure on the hips and thighs, and promotes blood circulation; the improved knee protection device provided by the present utility model can improve the comfort during work, thereby improving the work performance of the user.

[0017] It can move freely; whether the user moves in a kneeling position or a standing position, both the user and the working tool will be moved together; the kneeling movement method can be unlocked and braked and moved without using the hands, and only the movement can be completed according to the sole of the foot, which greatly reduces the use of the user's hands; the user can directly stand up at any time and then continue to slide on the knees without any operation on the improved knee protection device provided by the present utility model, freeing the hands and helping to improve the work efficiency of the user;

[0018] It can enable the user to freely brake, decelerate or stop during the kneeling movement, reduce the risk of slipping and losing control, thereby avoiding collisions and other dangerous situations, significantly improving the work safety of the user, further adapting to more working conditions and improving work efficiency; it can provide a warning equivalent for others in the blind area of the back during the user's work process, further improving the work safety of the user and effectively ensuring the safe progress of the work; at the same time, it can also improve the stability of the left knee protector and the right knee protector.

[0019] Of course, it is not necessarily required for any product implementing the present utility model to achieve all the above-mentioned technical effects simultaneously.

[0020] Through the following detailed description of the exemplary embodiments of the present utility model with reference to the accompanying drawings, other features and advantages of the present utility model will become clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments of the present utility model and, together with the description, are used to explain the principles of the present utility model.

[0022] Figure 1 is an improved knee protection skateboard device for protecting the human knee provided by Chinese Patent Application Document 1;

[0023] Figure 2 is a schematic structural diagram of an improved knee protector provided by the present utility model;

[0024] Figure 3 It is the top view of a right knee guard provided by the present utility model;

[0025] Figure 4 It is the front view of a right knee guard provided by the present utility model;

[0026] Figure 5 It is the right view of a right knee guard provided by the present utility model;

[0027] Figure 6 It is Figure 4 the enlarged view of the position D in

[0028] Figure 7 It is the usage schematic diagram of the present utility model;

[0029] Figure 8 It is the structural schematic diagram of the left knee guard provided by the present utility model. Detailed implementation manners

[0030] Now, various exemplary embodiments of the present utility model will be described in detail with reference to the accompanying drawings. It should be noted that: Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present utility model.

[0031] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as a limitation on the present utility model, its application, or its use.

[0032] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the specification.

[0033] In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0034] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0035] Embodiment 1

[0036] Referring to Figures 2 - 7 shown in Figure 2 It is the structural schematic diagram of an improved knee guard provided by the present utility model; Figure 3 It is the top view of a right knee guard provided by the present utility model; Figure 4 It is the front view of a right knee guard provided by the present utility model; Figure 5 It is the right view of a right knee guard provided by the present utility model;Figure 6 Yes Figure 4 The enlarged view at position A in the figure; Figure 7 It is a schematic diagram of the use of the present utility model; This embodiment provides an improved knee pad, which includes a left knee pad A and a right knee pad B arranged oppositely;

[0037] Both the left knee pad A and the right knee pad B include a support frame 1, a cushion assembly 2, a fixing assembly 3 and a storage device 4;

[0038] The support frame 1 includes an inner metal tube 11 and an outer metal tube 12 arranged oppositely. The inner metal tube 11 and the outer metal tube 12 are parallel to each other and have a gap of at least 15 cm. Along the direction perpendicular to the side of the left knee pad A pointing to the right knee pad B, both the inner metal tube 11 and the outer metal tube 12 include a tube body horizontal section 11A, a tube body middle section 11B and a tube body inclined section 11C connected in sequence. The tube body horizontal section 11A, the tube body middle section 11B and the tube body inclined section 11C form a J-shaped structure, and the tube body horizontal section 11A, the tube body middle section 11B and the tube body inclined section 11C are all hollow tubes; A connecting tube is connected between the inner metal tube 11 and the outer metal tube 12, and the length extension direction of the connecting tube intersects with the length extension direction of the inner metal tube 11;

[0039] The cushion assembly 2 includes: a buffer pad 21 and a seat cushion 22. The connecting tube includes a head end connecting tube 13, an inclined section connecting tube 16 and a hook end connecting tube 17. The head end connecting tube 13, the inclined section connecting tube 16 and the hook end connecting tube 17 are all hollow tubes. The head end between the inner metal tube 11 and the outer metal tube 12 is connected to the buffer pad 21 through the head end connecting tube 13, and the hook end between the inner metal tube 11 and the outer metal tube 12 is connected to the seat cushion 22 through the inclined section connecting tube 16 and the hook end connecting tube 17; Both the buffer pad 21 and the seat cushion 22 include sponge fillers;

[0040] The fixing assembly 3 includes a knee fixing member and an ankle fixing member. A knee fixing member (not marked in the figure) is arranged on the head end side corresponding to the buffer pad 21 between the inner metal tube 11 and the outer metal tube 12, and an ankle fixing member (not marked in the figure) is arranged on the hook end side corresponding to the seat cushion 22 between the inner metal tube 11 and the outer metal tube 12;

[0041] The storage device 4 is arranged on the side of the outer metal tube 12 away from the inner metal tube 11;

[0042] Rollers 5 are arranged on the bottom surfaces of the inner metal tube 11 and the outer metal tube 12 near the head end side;

[0043] A brake device 7 is provided on the bottom surface of the side of the buffer pad 21 away from the seat cushion 22. The center of the roller 5 of the inner metal tube 11, the roller 5 of the outer metal tube 12, and the brake device 7 form a triangular structure. The brake device 7 includes a hollow semi-sphere, the opening of the hollow semi-sphere faces the horizontal ground, the hollow semi-sphere is made of a hard material, and the thickness of the hollow semi-sphere is at least 1 cm.

[0044] Specifically, referring to Figure 2 , Figure 2 FIG. is a schematic structural diagram of an improved knee pad provided by the present utility model. The improved knee pad provided in this embodiment includes: a left knee pad A and a right knee pad B that are symmetrically arranged in a mirror image, that is, the left knee pad A and the right knee pad B are in a left-right mirror image relationship, and the component structures of the left knee pad A and the right knee pad B are the same. The left knee pad A and the right knee pad B both include: a support frame 1, a soft pad assembly 2, a fixing component 3, and a storage device 4;

[0045] The support frame 1 is composed of two metal tubes, and the two metal tubes are arranged in parallel. One is on the inner side of the leg, and the other is on the outer side of the leg. The inner metal tube 11 and the outer metal tube 12 are fixedly connected by five connecting tubes. Between the parallel and juxtaposed gaps of the inner metal tube 11 and the outer metal tube 12, soft pad assemblies 2 are provided at the head end and the hook end of the metal tubes; the two bottom long sides of the soft pad assembly 2 are respectively connected to the inner metal tube 11 and the outer metal tube 12 along the length extension direction of the inner metal tube 11 and / or the outer metal tube 12, and the connection method is screw connection; a fixing component 3 is connected at the junction of the inner metal tube 11 and the outer metal tube 12 and the soft pad assembly 2. The fixing component 3 is a retractable fixing belt. One end of the fixing component 3 is fixedly connected to the outer metal tube 12, and the other end of the fixing component 3 is movably connected to the outer metal tube 12. The middle section of the fixing component 3 is on the top surface of the soft pad assembly 2, forming a semi-circular perforation; along the length extension direction of the inner metal tube 11 and / or the outer metal tube 12, a storage device 4 is provided on the outer metal tube 12, and the outer metal tube 12 and the storage device 4 are fixedly connected by screws.

[0046] Specifically, referring to Figures 2 to 3 shown, Figure 3 is a top view of a right knee pad B provided by the present utility model;

[0047] The support frame 1 includes: an inner metal tube 11, an outer metal tube 12, and a connecting tube. The connecting tube includes a head end connecting tube 13, an inclined section connecting tube 16, and a hook end connecting tube 17;

[0048] Optionally, the connecting tube further includes: a horizontal section connecting tube 14 and a middle section connecting tube 15.

[0049] The inner metal tube 11, the outer metal tube 12, the head-end connecting tube 13, the horizontal-section connecting tube 14, the middle-section connecting tube 15, the inclined-section connecting tube 16, and the hook-end connecting tube 17 are all hollow circular tubes, and their materials are all metal materials. The inner metal tube 11 and the outer metal tube 12 are arranged longitudinally in a queue, parallel to each other. Along the direction from the left knee guard A to the right knee guard B, the front-view projections of the inner metal tube 11 and the outer metal tube 12 completely overlap. There is a gap of at least 15 cm between the inner metal tube 11 and the outer metal tube 12. The head-end connecting tube 13, the horizontal-section connecting tube 14, the middle-section connecting tube 15, the inclined-section connecting tube 16, and the hook-end connecting tube 17 all pass through the gap and are used to connect the inner metal tube 11 and the outer metal tube 12. The length extension directions of the head-end connecting tube 13, the horizontal-section connecting tube 14, the middle-section connecting tube 15, the inclined-section connecting tube 16, and the hook-end connecting tube 17 are all perpendicular to the length extension directions of the inner metal tube 11 and the outer metal tube 12, and the head-end connecting tube 13, the horizontal-section connecting tube 14, the middle-section connecting tube 15, the inclined-section connecting tube 16, and the hook-end connecting tube 17 are parallel to each other.

[0050] The above-mentioned inner metal tube 11 is approximately a J-shaped bent tube. From the straight head-end to the bent hook-end, along the length extension direction of the inner metal tube 11, there are successively a tube body horizontal section 11A, a tube body middle section 11B, and a tube body inclined section 11C. The above-mentioned tube body middle section 11B is approximately a U-shaped tube. The tube body horizontal section 11A is connected to one end of the tube body middle section 11B, and the connection angle is between 120° and 180°. The other end of the tube body middle section 11B far from the tube body horizontal section 11A is connected to the tube body inclined section 11C. Depending on the connection angle between the tube body horizontal section 11A and the tube body middle section 11B, the tube body middle section 11B and the tube body inclined section 11C can have different settings. Finally, it is only necessary to make the angle between the tube body inclined section 11C and the horizontal ground less than 60°. The tube body horizontal section 11A, the tube body middle section 11B, and the tube body inclined section 11C are integrally forged or cast without connection gaps. The above-mentioned tube body inclined section 11C inclines from the end close to the tube body middle section 11B towards the tube body horizontal section 11A side. Among them,

[0051] From the left end to the middle position of the tube body horizontal section 11A, there are successively a head-end connection hole 111 and a horizontal-section connection hole 112, and the opening directions are both perpendicular to the bending direction of the inner metal tube 11.

[0052] At any position of the tube body middle section 11B, there is a middle-section connection hole 113, and the opening direction is perpendicular to the bending direction of the inner metal tube 11.

[0053] The inclined section 11C of the pipe body is successively provided with a hook-end connection hole 115 and an inclined-section connection hole 114 from the hook end of the inclined section 11C of the pipe body to the direction of the middle section 11B of the pipe body, and the opening directions are both perpendicular to the bending direction of the inner metal pipe 11.

[0054] The outer metal pipe 12 has exactly the same structure as the inner metal pipe 11. The outer metal pipe 12 is successively provided with a head-end connection hole 121, a horizontal-section connection hole 122, a middle-section connection hole 123, an inclined-section connection hole 124, and a hook-end connection hole 125 from the head end to the hook end.

[0055] The head-end connecting pipe 13, the horizontal-section connecting pipe 14, the middle-section connecting pipe 15, the inclined-section connecting pipe 16, and the hook-end connecting pipe 17 are all hollow round pipes with openings at both ends. Threads are provided on the inner surfaces of the openings at both ends. The inner metal pipe 11 and the outer metal pipe 12 are fixedly connected through the head-end connecting pipe 13, the horizontal-section connecting pipe 14, the middle-section connecting pipe 15, the inclined-section connecting pipe 16, and the hook-end connecting pipe 17. The openings at both ends of the head-end connecting pipe 13 are respectively bolt-connected to the head-end connection hole 111 and the head-end connection hole 121. The openings at both ends of the horizontal-section connecting pipe 14 are respectively bolt-connected to the horizontal-section connection hole 112 and the horizontal-section connection hole 122. The openings at both ends of the middle-section connecting pipe 15 are respectively bolt-connected to the middle-section connection hole 113 and the middle-section connection hole 123. The openings at both ends of the inclined-section connecting pipe 16 are respectively bolt-connected to the inclined-section connection hole 114 and the inclined-section connection hole 124. The openings at both ends of the hook-end connecting pipe 17 are respectively bolt-connected to the hook-end connection hole 115 and the hook-end connection hole 125.

[0056] The soft cushion assembly 2 includes a buffer cushion 21 and a seat cushion 22. Both the buffer cushion 21 and the seat cushion 22 are elastic soft cushions filled with sponge. The outer surface can be made of leather or cotton cloth. There is no connection relationship between the buffer cushion 21 and the seat cushion 22. The buffer cushion 21 is fixed to the head end of the support frame 1 through the head-end connecting pipe 13, and the seat cushion 22 is fixed to the hook end of the support frame 1 through the inclined-section connecting pipe 16 and the hook-end connecting pipe 17. The buffer cushion 21 is a sponge filler. Of course, according to the actual situation, it can also be an elastic soft cushion with an internal spring and sponge filler.

[0057] The buffer pad 21 is a U-shaped elastic soft pad, movably fixed to the head end of the support frame 1 to provide support and cushioning for the user's knees; the buffer pad 21 includes: an arc-shaped side surface 213, a rectangular side surface, an upper top surface, a lower bottom surface, an inner side surface 211, and an outer side surface 212; the upper top surface and the lower bottom surface of the buffer pad 21 are both parallel to the length extension direction of the head end connecting pipe 13, and the inner side surface 211, the outer side surface 212, and the arc-shaped side surface 213 of the buffer pad 21 are all perpendicular to the length extension direction of the head end connecting pipe 13; specifically, the side surface close to the inner side of the user's leg is the inner side surface 211 of the buffer pad 21, and the side surface close to the outer side of the user's leg is the outer side surface 212 of the buffer pad 21 (the side surface of the buffer pad 21 away from the inner side of the user's leg); the inner side surface 211 and the outer side surface 212 of the buffer pad 21 are both rectangular, and connecting holes are both opened in the middle; through this connecting hole, one end of the head end connecting pipe 13 is perpendicular to the inner side surface 211 of the buffer pad 21, extends into and penetrates the inside of the frustum of the buffer pad 21, and protrudes from the outer side surface 212 of the buffer pad 21. Both ends of the head end connecting pipe 13 are fixed to the head end of the support frame 1 by screws; the upper top surface of the buffer pad 21 is the pad surface in contact with the knee; the lower bottom surface of the buffer pad 21 is a U-shaped plane; the concave direction of the arc-shaped side surface 213 of the buffer pad 21 is away from the support frame 1 and faces outward.

[0058] Further, along the direction from the inner metal pipe 11 to the outer metal pipe 12, the width of the upper top surface is greater than the width of the lower bottom surface, that is, the buffer pad 21 is a U-shaped frustum-shaped soft pad with a wider upper part and a narrower lower part. Along the direction from the inner metal pipe to the outer metal pipe, the maximum width of the upper top surface is w1, and the sum of the diameters of the inner metal pipe, the outer metal pipe, and the length of the head end connecting pipe is L1. Among them, w1 = L1, that is, the width of the upper top surface of the buffer pad 21 is equal to the sum of the diameters of the inner metal pipe 11, the outer metal pipe 12, and the length of the head end connecting pipe 13, and the width of the lower bottom surface of the buffer pad 21 is equal to the length of the head end connecting pipe 13; when the buffer pad 21 rotates counterclockwise with the head end connecting pipe 13 as the rotation axis, the counterclockwise rotation angle does not exceed 30°, to prevent the pad surface of the buffer pad 21 from being overly pressed and tilted; when the buffer pad 21 rotates clockwise with the head end connecting pipe 13 as the rotation axis, the maximum rotation angle can reach 180°.

[0059] The cushion 22 is a rectangular elastic soft pad, stably fixed to the hook end of the support frame 1 to provide support and cushioning for the user's buttocks; the cushion 22 includes: the hook end side, the inclined section side, the upper top surface, the lower bottom surface, the inner side surface 221 and the outer side surface 222; the upper top surface and the lower bottom surface of the cushion 22 are both parallel to the coplanar surface of the inclined section connecting pipe 16 and the hook end connecting pipe 17, and the hook end side, the inclined section side, the inner side surface 221 and the outer side surface 222 of the cushion 22 are all perpendicular to the coplanar surface of the inclined section connecting pipe 16 and the hook end connecting pipe 17; specifically, the side close to the inner side of the user's leg is the inner side surface 221 of the cushion 21, and the side close to the outer side of the user's leg is the outer side surface 222 of the cushion 21 (the side of the cushion 22 away from the inner side of the user's leg); the inner side surface 221 and the outer side surface 222 of the cushion 22 are both rectangular and both have two connecting holes; the two connecting holes are arranged in sequence along the length extension direction of the rectangular side and are at the middle position in the width extension direction, one of the holes is close to the hook end side and coincides with the hook end connecting hole 125, and the other hole is close to the inclined section side and coincides with the inclined section connecting hole 124; through the two groups of connecting holes on the inner side surface 221 and the outer side surface 222, one end of the inclined section connecting pipe 16 and the hook end connecting pipe 17 is perpendicular to the inner side surface 221 of the cushion 22, extends into and penetrates the interior of the cushion 22, and extends out from the outer side surface 222 of the cushion 22, and both ends of the inclined section connecting pipe 16 and the hook end connecting pipe 17 are fixed to the inclined section of the support frame 1 by screws, that is, the position between the hook end and the U-shaped middle section; the upper top surface of the cushion 22 is the pad surface contacted by the buttocks. The cushion 22 is a sponge filler, and of course, according to the actual situation, it can also be an elastic soft pad with built-in springs and sponge fillers.

[0060] The fixing assembly 3 includes: a knee fixing member and an ankle fixing member. A knee fixing member is arranged on the head end between the inner metal tube 11 and the outer metal tube 12 corresponding to one side of the cushion 21. The knee fixing member is used to prevent the knee from slipping off the cushion 21. An ankle fixing member is arranged on the hook end between the inner metal tube 11 and the outer metal tube 12 corresponding to one side of the cushion 22. The ankle fixing member is used to fix the ankle on the cushion 22.

[0061] Optionally, the knee fixing member includes a knee fixing band 31, a knee tongue 32 and a knee buckle 33. One end of the knee fixing band 31 is fixed to the outer metal tube 12, the other end of the knee fixing band 31 is connected with the knee tongue 32, the knee buckle 33 is fixed to the inner metal tube 11, and the knee tongue 32 is inserted into the knee buckle 33;

[0062] The ankle fixing member includes an ankle fixing band 34, an ankle tongue 35 and an ankle buckle 36. One end of the ankle fixing band 34 is fixed to the outer metal tube 12, the other end of the ankle fixing band 34 is connected with the ankle tongue 35, the ankle buckle 36 is fixed to the inner metal tube 11, and the knee tongue 32 is inserted into the knee buckle 33.

[0063] The above-mentioned knee fixing band 31, knee locking tongue 32, knee locking buckle 33, ankle fixing band 34, ankle locking tongue 35 and ankle locking buckle 36; the knee fixing band 31, knee locking tongue 32 and knee locking buckle 33 are used to fix the knee on the buffer pad 21 to prevent the knee from slipping off the buffer pad 21, and the ankle fixing band 34, ankle locking tongue 35 and ankle locking buckle 36 are used to fix the ankle on the seat cushion 22 to further strengthen the overall coherence between the improved knee pad of this embodiment and the user's body.

[0064] Optionally, in combination Figures 2 to 6 As shown, in the above-mentioned fixing assembly 3, both the knee fixing band 31 and the ankle fixing band 34 are long rectangular webbings, and the material can be cotton or synthetic fiber; both the knee locking tongue 32 and the ankle locking tongue 35 are metal locking tongues, both in the shape of a T and of the same size; both the knee locking buckle 33 and the ankle locking buckle 36 are rectangular locking buckles, exactly the same in shape and size, and both contain locking blocks in the middle of the box body for buckling and fixing with the locking tongue; locking teeth for providing friction to the card slot of the buckling device and then further strengthening the firm locking; a spring for controlling the retraction and extension of the locking tongue; a locking piece for controlling the release; the working principle of the fixing band, locking tongue and locking buckle is the same as the buckling principle of the car seat belt.

[0065] Specifically, one end of the knee fixing band 31 is sewn and fixed on the outer metal tube 12, fixed between the head end connection hole 121 and the horizontal section connection hole 122; the other end of the knee fixing band 31 passes through the knee locking tongue 32 and is movably fixed on the knee locking tongue 32, and the length of the knee fixing band 31 from the fixed end to the movable end can be controlled by the remaining end of the head passing through the knee locking tongue 32; then, the tongue end of the knee locking tongue 32 connected to the knee fixing band 31 is inserted into the knee locking buckle 33, and the fixation between the upper side of the buffer pad 21 and the front side of the user's knee can be completed.

[0066] One end of the ankle fixing band 34 is sewn and fixed on the outer metal tube 12, fixed between the inclined section connection hole 124 and the hook end connection hole 125; the other end of the ankle fixing band 341 passes through the ankle locking tongue 35 and is movably fixed on the ankle locking tongue 35, and the length of the ankle fixing band 34 from the fixed end to the movable end can be controlled by the remaining end of the head passing through the ankle locking tongue 35; then, the tongue end of the ankle locking tongue 35 connected to the ankle fixing band 34 is inserted into the ankle locking buckle 36, and the fixation between the lower side of the seat cushion 22 and the front side of the user's ankle rear side can be completed.

[0067] The storage device 4 is arranged on the side of the outer metal tube 12 away from the inner metal tube 11, that is, the storage device 4 is respectively installed on the left knee pad A and the right knee pad B, and the storage device 4 is used to store the user's tools or equipment.

[0068] The number of the above-mentioned roller skates 5 is two, and both of the two roller skates 5 are universal wheels, which are respectively fixed at the head ends of the inner metal tube 11 and the outer metal tube 12, and the fixing frame is perpendicular to the buffer pad 21 to provide support for the support frame 1 and the buffer pad 21.

[0069] As Figure 5 shown, the above-mentioned braking device 7 is a hard hollow semi-sphere, the thickness of the braking device 7 is at least one centimeter, the opening direction faces the horizontal ground, and it is arranged at the front end of the lower bottom surface of the buffer pad 21; the braking device 7 can be a hard plastic ball, and the highest point inside the ball is fixed to the lower bottom surface of the buffer pad 21 by a screw in a spiral manner; specifically, when the user uses the improved knee pad device in a kneeling position, the user's soles face backward, and the user's buttocks can be placed on the seat cushion 22. When the user needs to work, the body will involuntarily tilt forward due to the work, and the forward tilt pressure causes the front end of the buffer pad 21 to press downward to the ground, so that the braking device 7 contacts the ground, making the braking device 7 the third support foot of the buffer pad 21 in addition to the two universal wheels. The braking device 7 and the rear sole are on the same force arm axis, which can prevent the rear sole from continuing to push the improved knee pad device forward.

[0070] Due to this spiral fixing method of the braking device 7, the braking device 7 can be replaced after being damaged.

[0071] Combined Figure 2 with Figure 7 shown, when specifically used, the support frame 1 is placed vertically, so that the bending and concave direction of the support frame 1 is perpendicular to the horizontal ground and faces upward. At this time, the buffer pad 21 is affected by gravity and rotates a certain amplitude around the head end connecting pipe 13, and the upper and lower bottom surfaces of the buffer pad 21 are perpendicular to the horizontal bottom surface; extend the leg into the bending and concave area of the support frame 1 so that the toes face the direction of the roller skate 5 and the instep is perpendicular to the horizontal ground and faces upward; use the knee fixing member and the ankle fixing member to fix the knee and the ankle so that the buffer pad 21 is closely connected to the user's knee, and the seat cushion 22 is closely connected to the back side (heel) of the user's ankle; the improved knee pad of this embodiment can be freely carried to walk, go up steps and other positions where the roller skate 5 cannot directly slide over; and further hang the required tools, or a light tool kit, on the storage device 4 of this embodiment; the user can perform knee flexion operations. At this time, the user's knee presses down on the buffer pad 21, and the buffer pad 21 provides pressure buffering and elastic support for the knee. The user's heel is in contact with the seat cushion 22, and the entire sole is under the seat cushion 22. The user's buttocks can sit on the side of the seat cushion 22 away from the ankle fixing band 341, and the seat cushion 22 provides pressure buffering and elastic support for the buttocks. The sole under the curved seat cushion 22 can be pedaled forward, so that the roller skate 5 slides in this direction. The user can slide while performing the operation, which is especially convenient for some workers with inconvenient hand use, who need to move frequently but can only move with the help of their feet, such as putty workers.

[0072] As can be seen from the above embodiments, the improved knee pads provided in this embodiment achieve at least the following beneficial effects:

[0073] The improved knee pad device provided in this embodiment can provide additional support and protection for the knee joints of workers in a bent-knee position, reduce sprains that may occur during work, absorb a part of the downward body pressure, reduce direct damage to the knees, help stabilize the knee joints, and reduce the risk of injuries caused by joint instability; it can provide an additional soft cushion 22 to reduce the discomfort during long-term work. Further, the design of the cushion 22 helps to maintain a correct sitting posture, support the natural curve of the spine, prevent back and neck pain, relieve the pressure on the buttocks and thighs, and promote blood circulation; the improved knee pad device provided by the present utility model can improve the comfort during work, thereby improving the work performance of the user.

[0074] It can move freely; whether the user moves in a bent-knee position or a standing position, both the user and the working tool are moved together; the bent-knee movement mode can be unlocked and braked and moved without using the hands, and only the movement is completed according to the sole of the foot, greatly reducing the use of the user's hands; the user can directly stand up at any time and then continue to slide on the knees without performing any operations on the improved knee pad device provided by the present utility model, freeing the hands and helping to improve the work efficiency of the user;

[0075] It can enable the user to freely brake, decelerate or stop during the bent-knee movement, reduce the risk of slipping and losing control, thereby avoiding collisions and other dangerous situations, significantly improving the work safety of the user, and further adapting to more working conditions and improving work efficiency; it can make the user's work process provide a warning equivalent for others in the blind area of the back, further improving the work safety of the user and effectively ensuring the safe progress of the work.

[0076] Embodiment Two

[0077] Continue to refer to Figure 2 As shown, in this embodiment, the storage device 4 includes a background board, and a storage hole is opened on the background board. The storage hole penetrates the background board along the direction from the left knee pad A to the right knee pad B, and a movable hanging ring is hung on the storage hole.

[0078] The above storage device 4 is a background board with densely distributed holes on its surface, that is, a perforated board, which can be made of plastic or metal, and has the same bent contour as the support frame 1, and can completely cover the side of the outer metal tube 12 away from the inner metal tube 11; along the contour edge of the storage device 4, at least five connecting holes are provided, through which the storage device 4 is fixed to the outer metal tube 12 by screws; inside the plate surface of the storage device 4, storage holes are neatly arranged, and the user's light-use tools or equipment can be stored on the storage device 4 through a movable hanging ring, which is convenient to pick up and store, and at the same time enables the tool or equipment to move stably with the user immediately.

[0079] Further, the holes on the storage device 4 can be regular polygons or circles, as long as they can hang tools or equipment, and no specific limitation is made in this embodiment.

[0080] Further, the movable hanging ring can be selected from a snap Roman ring, an S-shaped double-headed spring buckle, a gourd-shaped movable buckle, etc.

[0081] In an alternative embodiment, in combination Figure 3 and Figure 8 as shown, Figure 8 is a schematic structural diagram of the left knee pad provided by the present utility model. The storage device 4 includes a bottom surface 40. On the side of the bottom surface 40 away from the inner metal tube 11, at least two elastic bands 41 and a storage bag 42 are provided. Along the direction from the buffer pad 21 to the seat cushion 22, at least two sewing threads are provided on the elastic band 41, and the at least two sewing threads are arranged along the direction from the buffer pad 21 to the seat cushion 22. Perforations are formed between the sewing threads, the elastic band 41 and the bottom surface 40;

[0082] In the thickness direction of the bottom surface 40, the orthographic projection of the elastic band 41 does not overlap with the orthographic projection of the storage bag 42.

[0083] The above storage device 4 can be a bag-type storage device. The bag-type storage device is a cloth bag, which has the same bent contour as the support frame 1 and can completely cover the side of the outer metal tube 12 of the support frame 1 away from the inner metal tube 11; the storage device 4 completely covers the side of the outer metal tube 12 away from the inner metal tube 11, and the rivet button rings are punched at the corresponding positions of the head end connection hole 121, the horizontal section connection hole 122, the inclined section connection hole 124 and the hook end connection hole 125 of the storage device 4 and the support frame 1; through the rivet button ring, the bag-type storage device is fixed to the head end connection hole 121, the horizontal section connection hole 122, the inclined section connection hole 124 and the hook end connection hole 125 of the support frame 1 by screws; the storage device 4 includes: a bottom surface 40, an elastic band 41 and a storage bag 42; among them,

[0084] The bottom surface 40 is a canvas cloth surface, with a contour identical to the bent contour of the support frame 1, and can completely cover the plane formed by the bending of the support frame 1. It has a long hypotenuse 401, a short hypotenuse 402, an arc-shaped bottom edge 403, and a straight edge 404; the long hypotenuse 401, the short hypotenuse 402, the arc-shaped bottom edge 403, and the straight edge 404 are connected in sequence to form an irregular quadrilateral; the intersection corner of the long hypotenuse 401 and the short hypotenuse 402 is an obtuse angle, and a rivet buckle ring is arranged inside the corner cloth surface, and it is spirally fixed to the hook-end connection hole 125 of the support frame 1 through this rivet buckle ring; the intersection corner of the short hypotenuse 402 and the arc-shaped bottom edge 403 is an obtuse angle, and a rivet buckle ring is arranged inside the corner cloth surface, and it is spirally fixed to the inclined-section connection hole 124 of the support frame 1 through this rivet buckle ring; the intersection corner of the long hypotenuse 401 and the straight edge 404 is an acute angle, and a rivet buckle ring is arranged inside the corner cloth surface, and it is spirally fixed to the head-end connection hole 121 of the support frame 1. In addition, a rivet buckle ring is arranged inside the cloth surface on the front side of the middle section of the straight edge 404 to further fix the bottom surface 40 to the horizontal-section connection hole 122 of the support frame 1.

[0085] The intersection corner of the arc-shaped bottom edge 403 and the straight edge 404 is an acute angle, and no rivet buckle ring is arranged inside the corner cloth surface. The part formed by the arc-shaped bottom edge 403 and the straight edge 404 can have different vertical directions in different inclined states of the improved knee pad. When the head end of the improved knee pad is vertically upward, the part formed by the arc-shaped bottom edge 403 and the straight edge 404 is vertically downward to the ground and close to the middle section 11B of the pipe body. When the head end of the improved knee pad is to the left or right, the part formed by the arc-shaped bottom edge 403 and the straight edge 404 is vertically downward to the ground and close to the horizontal section 11A of the pipe body of the support frame 1; the intersection corner of the arc-shaped bottom edge 403 and the straight edge 404 is not fixed, which is more conducive to the stability of tool storage when the user gets up and bends down during tool equipment near this place.

[0086] The elastic band 41 is woven with cotton or chemical fiber as warp and weft yarns and rubber filaments (latex filaments or spandex filaments); the elastic band 41 is distributed at the long hypotenuse 401 end of the bag-shaped storage device along the length extension direction of the long hypotenuse 401; both ends of the elastic band 41 are sewn and fixed inside the bottom surface 40, and at least every 1 centimeter distance, a sewing thread is added to fix this section of the band body inside the bottom surface 40 along the width direction of the bag body, that is, the elastic band 41 forms a row of perforations of different sizes along the length extension direction of the long hypotenuse 401. Since the elastic band has elasticity, this perforation can be an elastic perforation, and the opening direction of this perforation is perpendicular to the length extension direction of the long hypotenuse 401; various tools, such as a cross screwdriver, can hang themselves inside the bottom surface 40 through this perforation, and the tool storage is realized through the elastic band 41.

[0087] The storage bag 42 is a bag with one open side and three closed sides. It can be arbitrarily arranged within the bottom surface 40 after being set according to the elastic band 41, and its shape can be rectangular or fan-shaped. The length extension direction of the opening of the storage bag 42 is parallel to the length extension direction of the long hypotenuse 401. The opening of the storage bag 42 faces the head end of the support frame 1, and a magic tape 43 is provided inside the opening of the storage bag 42 to close the bag mouth.

[0088] Furthermore, an inner bag 44 can be arranged inside the storage bag 42 to meet the storage needs of more tools.

[0089] Optionally, for long tools, after passing through the perforations of the elastic band 41 and then through the magic tape 43, they can be inserted into the storage bag 42, which can further meet the storage needs of some longer tools.

[0090] Adopting the above solution can help users store tools in categories, facilitate quickly finding the required tools, and improve work efficiency; users can customize their own storage device 4 according to actual usage needs and hang various tools arbitrarily to better organize and use tools.

[0091] In an alternative embodiment, the left knee pad A and the right knee pad B further include a warning device 8. The warning device 8 includes a light strip 81, a battery, a charging port 82, and a switch 83. The battery and the switch 83 are arranged on the inner metal tube 11, the battery has the charging port 82, and the light strip 81 is wrapped around the outer wall of the middle section connecting tube 15. The light strip 81, the battery, the charging port 82, and the switch 83 are electrically connected.

[0092] Continue to refer to Figure 5 As shown, in this embodiment, the warning device 8 includes: a light strip 81, a battery, a charging port 82, and a switch 83, and the light strip 81, the battery, the charging port 82, and the switch 83 are electrically connected; specifically, the battery can be a rechargeable battery, which is stored inside the tube body of the support frame 1, and the battery can be charged through the charging port 82; the light strip 81 is wrapped around the outer wall of the middle section connecting tube 15. When using this embodiment, the switch 83 can be turned on, and the current of the battery flows into the light strip 81 to light up the light strip 81; during operation, warning lights are generated in the blind area on the user's back to prompt others.

[0093] Combined with Figure 2 and Figure 7 As shown, this embodiment is an application embodiment, which is specifically as follows:

[0094] First, place the support frame 1 vertically so that the bent and sunken direction of the support frame 1 is perpendicular to the horizontal ground and facing upwards. At this time, under the influence of gravity, the buffer pad 21 rotates a certain amplitude around the head-end connecting pipe 13, making the lighter U-shaped end of the buffer pad 21 face upwards, and both the upper and lower bottom surfaces of the buffer pad 21 are perpendicular to the horizontal bottom surface. Stretch the legs into the bent and sunken area of the support frame 1, making the toes face the direction of the roller skates 5 and the instep perpendicular to the horizontal ground and facing upwards. Insert the fixed knee tongue 32 into the knee buckle 33 and adjust the knee fixing strap 31 to an appropriate length so that the buffer pad 21 is closely connected to the user's knee. Insert the ankle tongue 35 into the ankle buckle 36 and adjust the ankle fixing strap 341 to an appropriate length so that the cushion 22 is closely connected to the back side (heel) of the user's ankle. Thus, the standing wear of this embodiment is completed.

[0095] Secondly, the improved knee pad of this embodiment can be freely carried to walk, go up stairs and other positions where the roller skates 5 cannot directly slide over. Further, the required tools or a light tool kit can be hung on the storage device 4 of this embodiment.

[0096] Finally, the user can perform knee-bending operations. At this time, the user's knee presses down on the buffer pad 21, and the buffer pad 21 provides pressure buffering and elastic support for the knee. The user's heel is in contact with the cushion 22, and the entire sole is under the cushion 22. The user's buttocks can sit on the side of the cushion 22 away from the ankle fixing strap 341, and the cushion 22 provides pressure buffering and elastic support for the buttocks.

[0097] The sole under the above-mentioned bent cushion 22 can be pedaled forward, causing the roller skates 5 to slide in this direction. The user can slide while performing operations, which is especially convenient for some workers with inconvenient hand use who need to move frequently but can only move with their feet, such as putty workers.

[0098] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An improved knee pad, characterized in that, It includes a left knee pad and a right knee pad which are oppositely arranged; Both the left knee pad and the right knee pad include a support frame, a cushion assembly, a fixing assembly, and a storage device; The support frame includes an inner metal tube and an outer metal tube which are oppositely arranged. The inner metal tube and the outer metal tube are parallel to each other and have a gap of at least 15 cm. Along the direction perpendicular to the side where the left knee pad points to the right knee pad, both the inner metal tube and the outer metal tube include a tube body horizontal section, a tube body middle section, and a tube body inclined section which are sequentially connected. A J-shaped structure is formed among the tube body horizontal section, the tube body middle section, and the tube body inclined section. The tube body horizontal section, the tube body middle section, and the tube body inclined section are all hollow tubes; A connecting tube is connected between the inner metal tube and the outer metal tube, and the length extension direction of the connecting tube intersects with the length extension direction of the inner metal tube; The cushion assembly includes a buffer pad and a seat cushion. The connecting tube includes a head-end connecting tube, an inclined-section connecting tube, and a hook-end connecting tube. The head-end connecting tube, the inclined-section connecting tube, and the hook-end connecting tube are all hollow tubes. The head-end between the inner metal tube and the outer metal tube is connected to the buffer pad through the head-end connecting tube, and the hook-end between the inner metal tube and the outer metal tube is connected to the seat cushion through the inclined-section connecting tube and the hook-end connecting tube; The materials of both the buffer pad and the seat cushion include sponge fillers; The fixing assembly includes a knee fixing member and an ankle fixing member. The knee fixing member is arranged on the side corresponding to the buffer pad at the head-end between the inner metal tube and the outer metal tube, and the ankle fixing member is arranged on the side corresponding to the seat cushion at the hook-end between the inner metal tube and the outer metal tube; The storage device is arranged on the side of the outer metal tube away from the inner metal tube; Rollers are arranged on the bottom surfaces of the inner metal tube and the outer metal tube near the head-end side; A braking device is arranged on the bottom surface of the buffer pad away from the seat cushion side. The centers of the rollers of the inner metal tube, the rollers of the outer metal tube, and the braking device form a triangular structure. The braking device includes a hollow semi-sphere. The opening of the hollow semi-sphere faces the horizontal ground. The hollow semi-sphere is made of a hard material, and the thickness of the hollow semi-sphere is at least 1 cm.

2. The improved knee pad according to claim 1, characterized in that, The knee fixing member includes a knee fixing strap, a knee locking tongue, and a knee locking buckle. One end of the knee fixing strap is fixed to the outer metal tube, the other end of the knee fixing strap is connected with the knee locking tongue, the knee locking buckle is fixed to the inner metal tube, and the knee locking tongue is inserted into the knee locking buckle; The ankle fixing member includes an ankle fixing strap, an ankle locking tongue, and an ankle locking buckle. One end of the ankle fixing strap is fixed to the outer metal tube, the other end of the ankle fixing strap is connected with the ankle locking tongue, the ankle locking buckle is fixed to the inner metal tube, and the knee locking tongue is inserted into the knee locking buckle.

3. The improved knee guard according to claim 1, characterized in that, The storage device includes a background board, and storage holes are opened on the background board. The storage holes penetrate through the background board along the direction from the left knee pad to the right knee pad side.

4. The improved knee pad according to claim 1, wherein The storage device includes a bottom surface. On the side of the bottom surface away from the inner metal tube, there is an elastic band and a storage bag. Along the direction from the buffer pad towards the seat cushion, at least two sewing threads are provided on the elastic band, and the at least two sewing threads are arranged along the direction from the buffer pad towards the seat cushion. A perforation is formed between the sewing threads, the elastic band, and the bottom surface. In the thickness direction of the bottom surface, the orthographic projection of the elastic band does not overlap with the orthographic projection of the storage bag.

5. The improved knee pad according to claim 1, characterized in that, A horizontal section connecting pipe is connected between the horizontal section of the tube body of the inner metal tube and the horizontal section of the tube body of the outer metal tube. A middle section connecting pipe is connected between the middle section of the tube body of the inner metal tube and the middle section of the tube body of the outer metal tube. The head end connecting pipe, the inclined section connecting pipe, the hook end connecting pipe, the horizontal section connecting pipe, and the middle section connecting pipe are parallel to each other.

6. The improved knee guard according to claim 5, wherein, The left knee pad and the right knee pad further include a warning device. The warning device includes a light strip, a battery, a charging port, and a switch. The battery and the switch are provided on the inner metal tube. The charging port is provided on the battery. The light strip is wrapped around the outer wall of the middle section connecting pipe. The light strip, the battery, the charging port, and the switch are electrically connected.

7. The improved knee pad according to claim 1, wherein The buffer pad includes an opposite upper top surface and a lower bottom surface. Along the direction from the inner metal tube towards the outer metal tube, the width of the upper top surface is greater than the width of the lower bottom surface.

8. The improved knee pad according to claim 7, characterized in that, Along the direction from the inner metal tube towards the outer metal tube, the maximum width of the upper top surface is w1, and the sum of the diameter of the inner metal tube, the diameter of the outer metal tube, and the length of the head end connecting pipe is L1. Among them, w1 = L1. The width of the lower bottom surface is equal to the length of the head end connecting pipe.

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