CN113841953B - Puncture-resistant sliding-resistant knee pad - Google Patents

Abstract

The application relates to an anti-puncture and anti-slip knee pad, which relates to the field of human knee pad protection articles; the shell comprises a hard shell and a soft shell; one side of the hard surface shell is provided with an installation groove matched with the knee, the other side of the hard surface shell is provided with a convex surface matched with the installation groove, and the convex surface comprises an upper convex surface and a lower convex surface; one side of the soft face shell is fit and attached to the convex surface, the other side of the soft face shell is provided with a sliding-resistant part, the sliding-resistant part comprises a plurality of forward sliding-resistant grooves arranged in the middle of the soft face shell, an upper sliding-resistant ring groove positioned at the upper part of the soft face shell, and a lower sliding-resistant ring groove positioned at the lower part of the soft face shell, and the forward sliding-resistant grooves are uniformly distributed along the length direction of the soft face shell; and the length direction of the forward anti-slip groove is parallel to the width direction of the soft face shell. The knee pad has the effect of improving the puncture resistance and the sliding resistance of the knee pad.

Description

Puncture-resistant sliding-resistant knee pad

Technical Field

The application relates to the field of human knee pad protection articles, in particular to an anti-puncture and anti-slip knee pad.

Background

The knee is one of important joints of a human body and has relatively fragile characteristics; in order to reduce damage to the knees during construction work or outdoor exercises, it is generally necessary to wear a knee pad.

The related Chinese patent with publication number CN207236554U discloses a novel silica gel anti-collision knee pad, which comprises a knee pad main body, wherein an inward opening containing hole with a shape matched with the position and shape of a human knee joint is formed on the inner surface of the knee pad main body; the knee pad theme includes from interior to outside pile up flocking non-woven fabrics plant layer, elasticity silica gel layer, the polyethylene fiber layer of arranging in proper order, and the surface on flocking non-woven fabrics plant layer welds with the internal surface on elasticity silica gel layer, and the surface on elasticity silica gel layer welds with the internal surface on polyethylene fiber layer.

With respect to the related art as described above, the inventors found that there are at least the following problems in this technology: when the knee pad main body is used by a knee pad wearer to touch the ground, the knee pad main body is easy to be pierced by external hard objects, even the knee joint of the knee pad wearer is damaged, and the friction between the knee pad main body and the ground is small, so that the sliding resistance effect of the knee pad main body is poor, the knee pad wearer can slide relative to the ground under the action of inertia, and the knee joint of the knee pad wearer is damaged.

Disclosure of Invention

In order to solve the technical problem that knee pads in the related art are easy to cause damage to knee joints of knee pad wearers, the application provides a puncture-resistant and slip-resistant knee pad.

The application provides an anti puncture antiskid knee-pad adopts following technical scheme:

an anti-puncture and anti-slip knee pad comprises a shell, wherein the shell comprises a hard shell and a soft shell; one side of the hard surface shell is provided with an installation groove matched with the knee, the other side of the hard surface shell is provided with a convex surface matched with the installation groove, and the convex surface comprises an upper convex surface and a lower convex surface; one side of the soft face shell is fit and attached to the convex surface, the other side of the soft face shell is provided with a sliding-resistant part, the sliding-resistant part comprises a plurality of forward sliding-resistant grooves arranged in the middle of the soft face shell, an upper sliding-resistant ring groove positioned at the upper part of the soft face shell, and a lower sliding-resistant ring groove positioned at the lower part of the soft face shell, and the forward sliding-resistant grooves are uniformly distributed along the length direction of the soft face shell; and the length direction of the forward anti-slip groove is parallel to the width direction of the soft face shell.

By adopting the technical scheme, the hard surface shell can be made of hard materials so as to improve puncture resistance, the protruding degrees of the upper convex surface and the lower convex surface on the hard surface shell are different, and the two surfaces are matched to play a role in resisting sliding; in addition, the soft face shell is soft in texture, can play a role in buffering, and the anti-slip part on the outer surface of the soft face shell can play a role in preventing slipping; specifically, the forward anti-slip groove has an anti-slip effect when the front surface of the soft face shell is contacted with the ground, and the upper anti-slip groove and the lower anti-slip groove have an anti-slip effect when the soft face shell and the ground sideslip.

Optionally, the sliding-preventing part further comprises upper sliding-preventing protrusions symmetrically arranged on two sides of the upper sliding-preventing ring groove.

Through adopting above-mentioned technical scheme, upside anti-skidding protruding setting can make when soft face-piece upside contacts with ground, plays buffering and anti-skidding effect, further optimizes the holistic anti-skidding effect of casing.

Optionally, the side wall of the hard surface shell facing the soft surface shell is symmetrically provided with a middle groove, each middle groove is internally provided with a plurality of middle bulges, the length direction of each middle bulge is parallel to the width direction of the middle groove, and the middle bulges are uniformly inserted along the length direction of the middle groove; the anti-slip part further comprises a middle side anti-slip groove, a plurality of middle side anti-slip protrusions are arranged in each middle side anti-slip groove, the side wall of the soft face shell, which is close to the middle side anti-slip groove, is fit with the middle groove in an adapting mode, and the side wall of the soft face shell, which is close to the middle side anti-slip protrusions, is fit with the middle protrusion in an adapting mode.

Through adopting above-mentioned technical scheme, middle part arch, middle part recess, well side is prevented smooth protruding and well side and is prevented smooth recess's setting can be when the lateral wall that soft face-piece was close to middle part department contacts with ground, reduces and appears soft face-piece and appear sideslip or rolling condition relative to ground, further optimizes the anti smooth effect of casing.

Optionally, the device further comprises a binding assembly, wherein the binding assembly comprises a cannula, a limiting rod, an elastic belt and a first spring; jacks are symmetrically formed in the side wall of the shell; the inner wall of the jack is provided with a slot, the first spring is positioned in the slot, one end of the first spring is connected with the inner wall of the slot, and the other end of the first spring is connected with the end part of the limiting rod; the insertion pipe is inserted into the insertion hole, and one end of the limiting rod, which is far away from the first spring, is inserted into the insertion pipe; the elastic band is connected to the outer side wall of the cannula.

Through adopting above-mentioned technical scheme, through inserting the intubate in the jack, insert the gag lever post in the intubate again to realize the installation of kidnapping subassembly and casing, so that when kidnapping subassembly or casing appear damaging, realize the split of kidnapping subassembly and casing and change, reduce because of kidnapping subassembly or casing appear damaging in individual position, thereby lead to casing and kidnapping subassembly to wholly change, the condition of extravagant resource.

The elastic belt is characterized in that a plurality of air bags are arranged on the side wall of the elastic belt, vent holes are formed in the side wall of each air bag, and sealing plugs are arranged on the side wall of each air bag and used for sealing the vent holes.

Through adopting above-mentioned technical scheme, after the user ties up the elastic webbing in user's knee position, the user inflates in to the gasbag through the air vent, and the gasbag of inflation can strengthen the protection effect to user's shank, reduces the harm that the position that appears user's shank deviates from the knee and ground collision caused.

Optionally, the shell further comprises a connecting component for detachably connecting the hard shell and the soft shell, and the connecting component comprises a hard connecting plate, a first fixing rod, a clamping plate and a first torsion spring;

the hard connecting plates are arranged on the side walls of the soft face shells, the first fixing rods are symmetrically and fixedly connected to the side walls of the hard connecting plates, and the clamping plates, the first torsion springs and the first fixing rods are arranged in one-to-one correspondence; the clamping plate and the first torsion spring are sleeved outside the first fixing rod, one end of the first torsion spring is fixedly connected to the clamping plate, and the other end of the first torsion spring is fixedly connected to the side wall of the first fixing rod; the hard face shell is symmetrically provided with clamping ports, and the clamping plates are abutted to the inner walls of the clamping ports.

Through adopting above-mentioned technical scheme, when the installation, put hard face shell on the platform in the plat form, then the staff takes soft face shell and makes it be located hard face shell directly over, and make the joint board be located the joint mouth directly over, then two joint boards of staff drive use first dead lever as the center rotation, and make the joint board rotate towards the direction that is close to hard face shell, first torsional spring is in deformation state this moment, then insert the joint board in the joint mouth, then release the holding to the joint board, the joint board is in joint mouth inner wall under the elasticity effect of first torsional spring this moment, thereby realize the joint of soft face shell and hard face shell, in order to dismantle the change to broken hard face shell or soft face shell when soft face shell is damaged, further reduce the waste of resource.

Optionally, a connecting hook plate is arranged at the end part of each clamping plate, a connecting convex rib is arranged on the inner wall of each clamping interface, and a groove is formed in the side wall of each connecting hook plate; each groove inner wall is provided with a rubber pad, and the connecting convex edges are inserted into the grooves.

By adopting the technical scheme, the contact area and friction between the clamping plate and the inner wall of the clamping interface are increased due to the grooves on the connecting hook plate and the connecting convex edges, so that the connection strength and connection stability of the clamping plate and the inner wall of the clamping interface can be enhanced; the rubber pad not only can increase the friction between the connecting rib and the inner wall of the groove, but also can increase the contact area between the connecting rib and the inner wall of the groove, so that the stable connection of the connecting rib and the groove is realized.

Optionally, the side wall of the hard connecting plate is provided with a magnet sheet, the side wall of the hard surface shell is provided with an adsorption iron sheet, and the magnet sheet and the adsorption iron sheet are magnetically attracted and fixed.

Through adopting above-mentioned technical scheme, the setting of magnet piece and absorption iron sheet can strengthen the connection compactness between stereoplasm face-piece and the soft face-piece, reduces the circumstances that appears soft face-piece and appears the skew at stereoplasm face-piece surface.

Optionally, the side wall of the hard surface shell close to each clamping interface is fixedly connected with a second fixing rod, and an abutting plate and a second torsion spring are sleeved outside each second fixing rod; the butt joint plate is used for opening and closing the clamping interface, one end of the second torsion spring is fixedly connected to the side wall of the butt joint plate, and the other end of the second torsion spring is fixedly connected to the inner wall of the clamping interface.

By adopting the technical scheme, when the second torsion spring is not deformed, the second butt joint plate covers the clamping interface, so that the blocking of the clamping interface can be reduced, and the aesthetic degree of the hard face shell can be improved; the clamping plate rotates with the second fixing rod as the center under the abutting pressure of the clamping plate in the process of inserting the clamping plate into the clamping interface, so that the clamping interface is opened, and the clamping plate is conveniently inserted into the clamping interface.

Optionally, a buffer layer is arranged on one side of the hard surface shell, which is away from the soft surface shell, a cavity is formed in the buffer layer, and ventilation holes communicated with the cavity are formed in the side wall of the buffer layer; and a second spring is arranged in the cavity, and the length direction of the second spring is parallel to the thickness direction of the buffer layer.

Through adopting above-mentioned technical scheme, the setting of bleeder vent can play the radiating effect, and the setting of second spring can improve buffer layer's cushioning properties and deformation resilience ability, in addition, the elasticity effect of second spring also can realize the quick exchange of the inside and outside air of cavity, further optimizes the radiating effect.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the arrangement of the hard face shell and the soft face shell can play a role in improving the puncture resistance of the knee pad, and in addition, the sliding resistance and buffering effect of the knee pad are optimized by arranging the sliding resistance part on the outer surface of the soft face shell, so that the knee part of a user is effectively protected;

2. the binding assembly is detachably connected to the shell, so that the shell and the binding assembly can be independently replaced, and the connection assembly is arranged to realize detachable connection of the hard shell and the soft shell, so that independent replacement of the hard shell and the soft shell is realized.

Drawings

Fig. 1 is a schematic structural view of a puncture-resistant sliding-resistant knee pad according to an embodiment.

Fig. 2 is an exploded schematic view of an embodiment for embodying a hard and soft face-piece structure.

Fig. 3 is a schematic structural view for embodying a positional relationship between a housing and a connection assembly in the embodiment.

Fig. 4 is a sectional view for embodying the internal structure of the housing in the embodiment.

Fig. 5 is an enlarged schematic view of the structure of fig. 4 for embodying part a.

Fig. 6 is a sectional view for embodying the positional relationship between the card-joint plate and the butt plate in the embodiment.

Fig. 7 is a cross-sectional view for embodying the connection relationship between the binding assembly and the housing in the embodiment.

Fig. 8 is an enlarged schematic view of the structure of fig. 7 for embodying the B portion.

Reference numerals illustrate: 1. a housing; 11. a hard face shell; 111. a magnet piece; 112. a card interface; 1121. connecting ribs; 113. a second fixing rod; 114. an abutting plate; 115. a second torsion spring; 116. a slot; 117. a slip hole; 118. a jack; 12. a soft shell; 121. a slip-resistant portion; 1211. a forward anti-slip groove; 1212. an upper anti-slip ring groove; 1213. a lower anti-slip ring groove; 1214. an upper anti-slip protrusion; 1215. a middle side anti-slip groove; 1216. a mid-side anti-slip protrusion; 13. a connection assembly; 131. a hard connecting plate; 1311. a notch; 1312. adsorbing iron sheets; 132. a first fixing rod; 133. a clamping plate; 1331. connecting a hook plate; 1332. a groove; 1333. a rubber pad; 134. a first torsion spring; 14. a mounting groove; 15. a convex surface; 151. an upper convex surface; 152. a lower convex surface; 16. a middle groove; 17. the middle part is convex; 2. a binding assembly; 21. a cannula; 22. a limit rod; 221. a pushing piece; 23. an elastic belt; 231. an air bag; 232. a vent hole; 233. a sealing plug; 24. a first spring; 25. nylon fastener; 251. nylon hook tape; 252. nylon velvet belts; 3. a buffer layer; 31. a cavity; 32. ventilation holes; 33. and a second spring.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-8.

The embodiment of the application discloses a puncture-resistant and sliding-resistant knee pad. Referring to fig. 1 and 2, the puncture-resistant sliding-resistant knee pad includes a case 1, the case 1 includes a hard face case 11 and a soft face case 12, the hard face case 11 is made of a puncture-resistant material, for example, PP material, one side of the hard face case 11 is provided with a mounting groove 14, a user's knee is embedded in the mounting groove 14, one side of the hard face case 11 facing away from the knee is provided with a convex surface 15, and the convex surface 15 includes an upper convex surface 151 and a lower convex surface 152; the soft face shell 12 is made of a sliding-resistant material, for example, a TPE material, wherein one side of the soft face shell 12 facing the hard face shell 11 is attached to the convex surface 15 of the hard face shell 11, and the other side of the soft face shell 12 is provided with a sliding-resistant part 121.

Referring to fig. 1 and 2, the slip blocking portion 121 includes an upper slip blocking ring groove 1212, a lower slip blocking ring groove 1213, symmetrically disposed upper side slip blocking protrusions 1214, symmetrically disposed middle side slip blocking grooves 1215, a plurality of middle side slip blocking protrusions 1216 positioned within each middle side slip blocking groove 1215, and a plurality of forward slip blocking grooves 1211. The forward anti-slip grooves 1211 are located at the middle of the soft face shell 12 and are uniformly arranged along the length direction of the soft face shell 12, and the length direction of each forward anti-slip groove 1211 is parallel to the width direction of the soft face shell 12; the upper anti-slip ring groove 1212 is located at the upper portion of the soft face shell 12, and the lower anti-slip ring groove 1213 is located at the lower portion of the soft face shell 12; the upper slide-preventing protrusions 1214 are positioned at two sides of the upper slide-preventing ring slot 1212 to play a role of buffering and slide-preventing; the side wall of the hard surface shell 11, which faces the soft surface shell 12, is symmetrically provided with a middle groove 16, the inner wall of each middle groove 16 is provided with a plurality of middle protrusions 17, the side wall of the soft surface shell 12, which is close to the middle side sliding-resisting groove 1215, is matched and attached with the middle groove 16, and the side wall of the soft surface shell 12, which is close to the middle side sliding-resisting protrusion 1216, is matched and attached with the middle protrusions 17.

Referring to fig. 3 and 4, the knee joint comprises a binding assembly 2, wherein the binding assembly 2 is used for binding the shell 1 at the knee part of a user, and a connecting assembly 13 is arranged between the hard shell 11 and the soft shell 12; the connection assembly 13 is used to achieve a detachable connection of the hard face 11 and the soft face 12.

Referring to fig. 4 and 5, the connection assembly 13 is used to detachably connect the soft face case 12 to one side of the hard face case 11; the connecting assembly 13 comprises a hard connecting plate 131, a first fixing rod 132, a clamping plate 133 and a first torsion spring 134; the hard connecting plate 131 is fixedly adhered to the edge of the soft face shell 12, the hard face shell 11 is arranged along the circumferential direction of the soft face shell 12, the edges of the hard connecting plate 131 are symmetrically provided with notches 1311, the first fixing rods 132, the clamping plates 133 and the first torsion springs 134 are arranged in one-to-one correspondence with the notches 1311, the first fixing rods 132 are fixedly welded on the inner walls of the notches 1311, the clamping plates 133 and the first torsion springs 134 are sleeved outside the first fixing rods 132, one ends of the first torsion springs 134 are welded on the side walls of the clamping plates 133, and the other ends of the first torsion springs 134 are welded on the outer side walls of the first fixing rods 132.

Referring to fig. 4, 5 and 6, a side wall of the hard connecting plate 131 facing the hard surface shell 11 is embedded with a magnet piece 111, the side wall of the hard surface shell 11 is embedded with an adsorption iron piece 1312, and the magnet piece 111 and the adsorption iron piece 1312 are magnetically attracted and fixed; the side wall of the hard surface shell 11 is symmetrically provided with clamping ports 112, the inner wall of each clamping port 112 is welded with a second fixing rod 113, the outside of each second fixing rod 113 is sleeved with an abutting plate 114 and a second torsion spring 115, and the abutting plates 114 are used for opening or closing the clamping ports 112. When the user pushes against the clamping plate 133 towards the direction close to the clamping interface 112, the clamping plate 133 rotates around the first fixing rod 132, at this time, the first torsion spring 134 is in a deformed state, then the clamping plate 133 is inserted into the clamping interface 112, the abutting plate 114 rotates towards the direction away from the clamping interface 112 under the pushing pressure of the clamping plate 133, after the clamping plate 133 is inserted into the clamping interface 112, the pushing pressure of the clamping plate 133 is released by a human hand, the clamping plate 133 is pushed against the inner wall of the clamping interface 112 under the driving of the first torsion spring 134, and the detachable connection of the hard surface shell 11 and the soft surface shell 12 is realized.

Referring to fig. 4 and 5, a connecting hook plate 1331 is integrally formed at one end of each clamping plate 133 away from the first fixing rod 132, a groove 1332 is formed on the side wall of the connecting hook plate 1331, a rubber pad 1333 is fixedly adhered to the inner wall of the groove 1332, a connecting rib 1121 is integrally formed on the inner wall of the clamping port 112, and the connecting rib 1121 is inserted into the groove 1332.

Referring to fig. 4, a buffer layer 3 is adhered to one side of the hard surface shell 11 away from the soft surface shell 12, the buffer layer 3 may be a rubber pad, a cavity 31 is formed in the inner wall of the buffer layer 3, a plurality of second springs 33 are adhered to the inner wall of the cavity 31, the length direction of the second springs 33 is parallel to the thickness direction of the buffer layer 3, ventilation holes 32 are formed in the side wall of the buffer layer 3, and the ventilation holes 32 are communicated with the cavity 31.

Referring to fig. 7 and 8, the binding assembly 2 is further included, and the binding assembly 2 includes a cannula 21, a stopper rod 22, an elastic band 23, a first spring 24, and a velcro 25; the side wall of the hard surface shell 11 is symmetrically provided with insertion holes 118, the insertion holes 118 penetrate through the hard surface shell 11, and the insertion pipe 21, the limiting rod 22, the elastic belt 23 and the first springs 24 are arranged in one-to-one correspondence with the insertion holes 118; the insertion pipes 21 are inserted into the insertion holes 118, the inner wall of each insertion hole 118 is also provided with an insertion slot 116, the length direction of each insertion slot 116 is parallel to the length direction of each insertion hole 118, the first springs 24 are positioned in the insertion slots 116, one ends of the first springs 24 are welded on the inner wall of each insertion slot 116, the other ends of the first springs 24 are welded on the end wall of the limiting rod 22, and the other ends of the limiting rods 22 are inserted into the insertion pipes 21.

Referring to fig. 7 and 8, the outer side wall of the limiting rod 22 is further integrally formed with a pushing piece 221, the side wall of the hard surface shell 11 is provided with a sliding hole 117 for inserting the pushing piece 221, and the sliding hole 117 is communicated with the slot 116; the elastic bands 23 are fixedly adhered to the outer side wall of the insertion tube 21, and the velcro 25 comprises nylon hook bands 251 and nylon velvet bands 252, wherein the nylon hook bands 251 are sewn on the end part of one elastic band 23, and the nylon velvet bands 252 are sewn on the end part of the other elastic band 23.

Referring to fig. 8, a plurality of air bags 231 are adhered to the side wall of each elastic belt 23, the air bags 231 are uniformly distributed along the length direction of the elastic belt 23, air is filled in the air bags 231, vent holes 232 are formed in the side wall of each air bag 231, sealing plugs 233 are inserted into each vent hole 232, the sealing plugs 233 are used for sealing the vent holes 232, and the sealing plugs 233 can be wood plugs or rubber plugs.

The implementation principle of the puncture-resistant and sliding-resistant knee pad provided by the embodiment of the application is as follows: firstly, putting the hard surface shell 11 on a plane horizontally, enabling one side of the hard surface shell 11 with the convex surface 15 to face upwards, covering one recessed side of the soft surface shell 12 on the convex surface 15 downwards, then pressing the two clamping plates 133 by hands, so that the clamping plates 133 rotate towards a direction close to the clamping interface 112, inserting the clamping plates 133 into the clamping interface 112, and then releasing the pressing of the clamping plates 133, wherein the hard surface shell 11 and the soft surface shell 12 are mutually clamped; then, the pushing piece 221 is driven by a human hand to slide along the length direction of the sliding hole 117, so that the limiting rod 22 is completely pushed into the slot 116, the insertion tube 21 is inserted into the insertion hole 118, and then the limiting rod 22 is inserted into the insertion tube 21 under the elastic force of the first spring 24, so that the detachable connection of the shell 1 and the binding assembly 2 is realized; finally, the tool can be used to inflate the airbag 231 and then the elastic band 23 can be tied to the leg of the user by the velcro 25.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (5)

1. The utility model provides a puncture-resistant anti-skidding knee pad, includes casing (1), its characterized in that: the shell (1) comprises a hard shell (11) and a soft shell (12); one side of the hard surface shell (11) is provided with a mounting groove (14) which is fit with the knee, the other side of the hard surface shell (11) is provided with a convex surface (15) which is fit with the mounting groove (14), and the convex surface (15) comprises an upper convex surface (151) and a lower convex surface (152); one side of the soft surface shell (12) is fit and attached to the convex surface (15), the other side of the soft surface shell (12) is provided with a sliding-resistant part (121), the sliding-resistant part (121) comprises a plurality of forward sliding-resistant grooves (1211) arranged in the middle of the soft surface shell (12), an upper sliding-resistant ring groove (1212) positioned at the upper part of the soft surface shell (12), and a lower sliding-resistant ring groove (1213) positioned at the lower part of the soft surface shell (12), and the forward sliding-resistant grooves (1211) are uniformly distributed along the length direction of the soft surface shell (12); and the length direction of the forward anti-slip groove (1211) is parallel to the width direction of the soft face shell (12); the anti-slip part (121) further comprises upper anti-slip protrusions (1214) symmetrically arranged on two sides of the upper anti-slip ring groove (1212); the side wall of the hard surface shell (11) facing the soft surface shell (12) is symmetrically provided with middle grooves (16), each middle groove (16) is internally provided with a plurality of middle bulges (17), the length direction of each middle bulge (17) is parallel to the width direction of each middle groove (16), and the middle bulges (17) are uniformly arranged along the length direction of each middle groove (16); the anti-skid part (121) further comprises a middle side anti-skid groove (1215) and a plurality of middle side anti-skid bulges (1216) positioned in each middle side anti-skid groove (1215); the side wall of the soft face shell (12) close to the middle side sliding-resisting groove (1215) is matched and attached with the middle groove (16), and the side wall of the soft face shell (12) close to the middle side sliding-resisting protrusion (1216) is matched and attached with the middle protrusion (17);

the shell (1) further comprises a connecting component (13) for detachably connecting the hard surface shell (11) and the soft surface shell (12), wherein the connecting component (13) comprises a hard connecting plate (131), a first fixing rod (132), a clamping plate (133) and a first torsion spring (134);

the hard connecting plates (131) are arranged on the side walls of the soft face shells (12), the first fixing rods (132) are symmetrically and fixedly connected to the side walls of the hard connecting plates (131), and the clamping plates (133), the first torsion springs (134) and the first fixing rods (132) are arranged in a one-to-one correspondence mode; the clamping plate (133) and the first torsion spring (134) are sleeved outside the first fixing rod (132), one end of the first torsion spring (134) is fixedly connected to the clamping plate (133), and the other end of the first torsion spring is fixedly connected to the side wall of the first fixing rod (132); the hard surface shell (11) is symmetrically provided with a clamping interface (112), and the clamping plate (133) is abutted against the inner wall of the clamping interface (112);

the end part of each clamping plate (133) is provided with a connecting hook plate (1331), the inner wall of each clamping interface (112) is provided with a connecting convex rib (1121), and the side wall of each connecting hook plate (1331) is provided with a groove (1332); a rubber pad (1333) is arranged on the inner wall of each groove (1332), and the connecting convex edges (1121) are inserted into the grooves (1332);

a second fixing rod (113) is fixedly connected to the side wall of the hard surface shell (11) close to each clamping interface (112), and an abutting plate (114) and a second torsion spring (115) are sleeved outside each second fixing rod (113); the butt plate (114) is used for opening and closing the card interface (112); one end of the second torsion spring (115) is fixedly connected to the side wall of the butt joint plate (114), and the other end of the second torsion spring is fixedly connected to the inner wall of the clamping interface (112).

2. The puncture resistant and slip resistant knee brace of claim 1, wherein: the novel electric power tool comprises a connecting rod, a connecting rod and a binding assembly (2), wherein the binding assembly (2) comprises a cannula (21), a limiting rod (22), an elastic belt (23) and a first spring (24); jacks (118) are symmetrically formed in the side wall of the shell (1); the inner wall of the jack (118) is provided with a slot (116), the first spring (24) is positioned in the slot (116), one end of the first spring (24) is connected with the inner wall of the slot (116), and the other end of the first spring is connected with the end part of the limiting rod (22); the insertion tube (21) is inserted into the insertion hole (118), and one end of the limiting rod (22) away from the first spring (24) is inserted into the insertion tube (21); the elastic band (23) is connected to the outer side wall of the cannula (21).

3. The puncture resistant and slip resistant knee brace of claim 2, wherein: the side wall of the elastic belt (23) is provided with a plurality of air bags (231), each air bag (231) side wall is provided with a vent hole (232), and each air bag (231) side wall is provided with a sealing plug (233) for sealing the vent hole (232).

4. The puncture resistant and slip resistant knee brace of claim 1, wherein: the side wall of the hard connecting plate (131) is provided with a magnet sheet (111), the side wall of the hard surface shell (11) is provided with an adsorption iron sheet (1312), and the magnet sheet (111) and the adsorption iron sheet (1312) are magnetically attracted and fixed.

5. The puncture resistant and slip resistant knee brace of claim 1, wherein: a buffer layer (3) is arranged on one side of the hard surface shell (11) away from the soft surface shell (12), a cavity (31) is formed in the buffer layer (3), and an air vent (32) communicated with the cavity (31) is formed in the side wall of the buffer layer (3); a second spring (33) is arranged in the cavity (31), and the length direction of the second spring (33) is parallel to the thickness direction of the buffer layer (3).