阅读说明：本技术 一种露趾可调式防足下垂袜 (Toe-exposed adjustable foot drop prevention socks ) 是由 魏肖星 于 2020-07-23 设计创作，主要内容包括：本发明属于康复设备技术领域,公开了一种露趾可调式防足下垂袜,包括：固定带,穿戴固定于用户小腿上；弹力袜,穿戴固定于用户足部；足托,缝合连接于弹力袜底部,并与用户足部底部接触；调节带,共设有两组,并分别连接固定带与足托两侧；其中：所述调节带上安装有长度调节装置,且所述长度调节装置内对称设有结构相同的单向收紧机构和单向放松机构；综上,以固定带、弹力袜、调节带和足托等结构实现对用户足部的牵引及支撑,从而有效实现防止用户出现足下垂的问题,并且具有结构简单、成本低、使用方便、穿戴舒适的优点；另外,在调节带上设有长度调节装置,能有效调节用户足部与小腿之间的定位角度,满足用户需求。(The invention belongs to the technical field of rehabilitation equipment, and discloses toe-exposed adjustable foot drop prevention socks, which comprise: the fixing band is worn and fixed on the lower leg of the user; the elastic socks are worn and fixed on the feet of the user; the foot support is sewn and connected to the bottom of the elastic sock and is contacted with the bottom of the foot of the user; two groups of adjusting belts are arranged and are respectively connected with the fixing belt and two sides of the foot support; wherein: a length adjusting device is arranged on the adjusting belt, and a one-way tightening mechanism and a one-way loosening mechanism which have the same structure are symmetrically arranged in the length adjusting device; in conclusion, the foot traction and support device realizes traction and support of the foot of the user by the structures such as the fixing belt, the elastic socks, the adjusting belt, the foot support and the like, thereby effectively preventing the foot of the user from drooping, and has the advantages of simple structure, low cost, convenient use and comfortable wearing; in addition, the length adjusting device is arranged on the adjusting belt, so that the positioning angle between the foot and the shank of the user can be effectively adjusted, and the requirements of the user are met.)

1. The utility model provides an it prevents drop foot socks with adjustable it exposes toe which characterized in that includes:

the fixing strap (1) is worn and fixed on the lower leg of a user, one end of the fixing strap (1) is provided with an adjusting row buckle (12), the other end of the fixing strap is provided with a hanging buckle (13), and the hanging buckle (13) is matched with the adjusting row buckle (12);

the elastic socks (2) are worn and fixed on the feet of a user, five toe holes (21) are formed in the front ends of the elastic socks (2), and five toes of the feet of the user respectively penetrate through the five toe holes (21);

the foot support (4) is sewed and connected with the bottom of the elastic sock (2) and is contacted with the bottom of the foot of the user;

two groups of adjusting belts (3) are arranged and are respectively connected with the fixing belt (1) and two sides of the foot support (4);

wherein:

a length adjusting device (31) is installed on the adjusting belt (3), and a one-way tightening mechanism and a one-way loosening mechanism which are identical in structure are symmetrically arranged in the length adjusting device (31);

the one-way tightening mechanism comprises an L-shaped guide hole (32) and a mounting hole (33), the mounting hole (33) is located on one side of the guide hole (32), and a one-way rotating gear (34), a driving wheel (35) and a limiting piece (36) are mounted in the mounting hole (33);

one side of the one-way rotating gear (34) is matched with the guide belt hole (32) to squeeze and clamp the adjusting belt (3);

the limiting piece (36) and the driving wheel (35) can move and can be meshed with the one-way rotating gear (34), and when the limiting piece (36) is meshed with the one-way rotating gear (34), the one-way rotating gear (34) is fixed; when the driving wheel (35) is meshed with the unidirectional rotating gear (34), the unidirectional rotating gear (34) rotates in a unidirectional way;

and a linkage component (39) is connected between the driving wheel (35) and the limiting piece (36), and the unidirectional rotation gear (34) is limited to be meshed with the driving wheel (35) or the limiting piece (36) independently through the linkage component (39).

2. The toe-exposed adjustable foot drop prevention sock according to claim 1, wherein: the one-way tightening mechanism further comprises a driving wheel (37) and a guide wheel (38), the driving wheel (37) is matched with the one-way rotating gear (34) and symmetrically distributed on two sides of the guide belt hole (32), the guide wheel (38) is located at a corner of the L-shaped guide belt hole (32), and the guide wheel (38) is in transmission connection with the driving wheel (37).

3. The toe-exposed adjustable foot drop prevention sock according to claim 1 or 2, wherein: the one-way rotating gear (34) comprises a ratchet wheel rotatably mounted in the mounting hole (33) and one-way ratchet teeth (341) meshed with one side of the ratchet wheel, and one end, far away from the ratchet wheel, of each one-way ratchet tooth (341) is welded to the inner wall of the mounting hole (33).

4. The toe-exposed adjustable foot drop prevention sock according to claim 1 or 2, wherein: the limiting piece (36) comprises a movable mounting plate (362), a first spring (361) and a meshing arc plate (363), wherein the first spring (361) and the meshing arc plate (363) are welded to two sides of the mounting plate (362), the first spring (361) is fixed on the inner wall of the mounting hole (33), and the meshing arc plate (363) is meshed with the one-way rotating gear (34).

5. The toe-exposed adjustable foot drop prevention sock according to claim 4, wherein: linkage part (39) include limiting plate (392) between sliding connection drive wheel (35) and mounting panel (362) and weld second spring (393) between limiting plate (392) and mounting hole (33) inner wall, the one side that is close to limiting plate (392) on mounting panel (362) is equipped with spacing inclined plane, and the one end and the cooperation of spacing inclined plane of limiting plate (392).

6. The toe-exposed adjustable foot drop prevention sock according to claim 5, wherein: the linkage part (39) further comprises a guide rod (391) fixed on the inner wall of the mounting hole (33), and the guide rod (391) penetrates through the limiting plate (392) and the second spring (393).

7. The toe-exposed adjustable foot drop prevention sock according to claim 1, wherein: one side of fixed band (1) is fixed with connecting piece (11), two recess (112) have been seted up in the bottom correspondence of connecting piece (11), and two all install in recess (112) and lead area roller (113), adjusting band (3) are walked around and are led area roller (113), and the both ends of adjusting band (3) all are fixed in on foot holds in the palm (4), the both ends of adjusting band (3) form the triangle-shaped structure with leading the cooperation of area roller (113).

8. The toe-exposed adjustable foot drop prevention sock according to claim 7, wherein: connecting piece (11) are including protruding fixed part (114) and conduction band portion (111), protruding fixed part (114) are located between two recess (112), and through the injecing of protruding fixed part (114) form two clearance (115) between fixed band (1) in conduction band portion (111), two clearance (115) symmetric distribution is in the both sides of protruding fixed part (114).

9. The toe-exposed adjustable foot drop prevention sock according to claim 1, wherein: evenly be equipped with a plurality of archs (14) on the interior surface wall of fixed band (1), arch (14) include with fixed band (1) interior surface wall sew up the non-woven fabrics of being connected, and arrange the spherical silica gel between the surface wall in non-woven fabrics and fixed band (1).

10. The toe-exposed adjustable foot drop prevention sock according to claim 1, wherein: the foot support (4) is provided with air holes (41) and a cotton pad (42), the air holes (41) correspond to the elastic socks (2), and the cotton pad (42) is positioned at the rear side of the air holes (41).

Technical Field

The invention belongs to the technical field of rehabilitation equipment, and particularly relates to toe-exposed adjustable foot drop prevention socks.

Background

The foot of a patient lying in bed for a long time can not effectively contact the bed surface due to foot drop, and the gravity center can not effectively move forwards, thereby causing walking dysfunction. At present, the measure for preventing the foot drop is that nursing staff often hold the feet of a patient upwards by hands and move ankle joints, and the feet are clamped between soles and bedrails by bedding, clothes, hardboards or cushions when the feet are inactive, so that the feet are kept in dorsiflexion positions, but the method is time-consuming, labor-consuming and uncertain in effect; or a special foot drop prevention mold is used, but the special foot drop prevention mold is high in price and relatively hard in material, and appliance pressure sores are easy to generate after a patient uses the special foot drop prevention mold. Meanwhile, the ankle joint is stiff and straight due to the long-time fixation of the foot, and the walking of the patient is also affected.

Therefore, it is an urgent problem for those skilled in the art to develop a rehabilitation device which is low in cost and can effectively prevent or improve the foot drop symptom of a patient.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide an open-toe adjustable foot drop prevention sock.

In order to achieve the purpose, the invention provides the following technical scheme: an open-toe adjustable foot drop prevention sock comprising:

the fixing band is worn and fixed on the crus of the user, one end of the fixing band is provided with an adjusting row buckle, the other end of the fixing band is provided with a hanging buckle, and the hanging buckle and the adjusting row buckle are matched with each other;

the elastic socks are worn and fixed on the feet of the user, five toe holes are formed in the front ends of the elastic socks, and the five toes of the feet of the user respectively penetrate through the five toe holes;

the foot support is sewn and connected to the bottom of the elastic sock and is contacted with the bottom of the foot of the user;

two groups of adjusting belts are arranged and are respectively connected with the fixing belt and two sides of the foot support;

wherein:

a length adjusting device is arranged on the adjusting belt, and a one-way tightening mechanism and a one-way loosening mechanism which have the same structure are symmetrically arranged in the length adjusting device;

the unidirectional tightening mechanism comprises an L-shaped guide hole and a mounting hole, the mounting hole is positioned at one side of the guide hole, and a unidirectional rotating gear, a driving wheel and a limiting piece are mounted in the mounting hole;

one side of the one-way rotating gear is matched with the guide belt hole to extrude and clamp the adjusting belt;

the limiting piece and the driving wheel can move and can be meshed with the one-way rotating gear, and when the limiting piece is meshed with the one-way rotating gear, the one-way rotating gear is fixed; when the driving wheel is meshed with the unidirectional rotating gear, the unidirectional rotating gear rotates in a unidirectional way;

and a linkage component is connected between the driving wheel and the limiting part, and the unidirectional rotation gear is limited to be meshed with the driving wheel or the limiting part independently through the linkage component.

Preferably, the one-way tightening mechanism further comprises a driving wheel and a guide wheel, the driving wheel is matched with the one-way rotating gear and symmetrically distributed on two sides of the hole guide, the guide wheel is located at a corner of the L-shaped hole guide, and the guide wheel is in transmission connection with the driving wheel.

Preferably, the one-way rotating gear comprises a ratchet wheel rotatably mounted in the mounting hole and one-way ratchet teeth meshed with one side of the ratchet wheel, and one end of each one-way ratchet tooth, which is far away from the ratchet wheel, is welded on the inner wall of the mounting hole.

Preferably, the locating part includes mobilizable mounting panel, and welds first spring and the meshing arc board in the mounting panel both sides, first spring is fixed in on the mounting hole inner wall, meshing arc board and the meshing of unidirectional rotation gear.

Preferably, the linkage part includes limiting plate sliding connection between drive wheel and mounting panel and welds the second spring between limiting plate and mounting hole inner wall, the one side that is close to the limiting plate on the mounting panel is equipped with spacing inclined plane, and the one end and the spacing inclined plane cooperation of limiting plate.

Preferably, the linkage part further comprises a guide rod fixed on the inner wall of the mounting hole, and the guide rod penetrates through the limiting plate and the second spring.

Preferably, a connecting piece is fixed on one side of the fixing band, two grooves are correspondingly formed in the bottom of the connecting piece, belt guide rollers are installed in the two grooves, the adjusting belt bypasses the belt guide rollers, two ends of the adjusting belt are fixed on the foot supports, and two ends of the adjusting belt are matched with the belt guide rollers to form a triangular structure.

Preferably, the connecting piece includes protruding fixed part and conducting strip portion, protruding fixed part is located between two recesses, and just through the limited formation two clearances between the conducting strip portion of protruding fixed part, two clearance symmetric distribution is in the both sides of protruding fixed part.

Preferably, evenly be equipped with a plurality of archs on the interior surface wall of fixed band, the arch includes the non-woven fabrics of sewing up the connection with the interior surface wall of fixed band and arranges the spherical silica gel between non-woven fabrics and the interior surface wall of fixed band in.

Preferably, the foot support is provided with air holes and a cotton pad, the air holes correspond to the elastic socks, and the cotton pad is positioned at the rear side of the air holes.

Compared with the prior art, the invention has the following beneficial effects:

(1) in the invention, the traction and the support of the foot of the user are realized by the structures such as the fixing belt, the elastic socks, the adjusting belt, the foot support and the like, so that the problem of foot drop of the user is effectively solved, and the foot-drop-preventing device has the advantages of simple structure, low cost, convenience in use and comfort in wearing; in addition, the length adjusting device is arranged on the adjusting belt, so that the positioning angle between the foot and the shank of the user can be effectively adjusted, the use flexibility of the invention is further improved, and the use requirements of different users are met.

(2) Aiming at the length adjusting device, the unidirectional tightening mechanism and the unidirectional loosening mechanism which can be driven in a unidirectional mode and have the same structure are correspondingly arranged, so that the length adjusting device is simpler and more convenient to use on the premise of ensuring that the adjusting belt can be effectively adjusted, and meanwhile, the manufacturing cost of the length adjusting device can be reduced.

(3) Aiming at the one-way tightening mechanism and the one-way loosening mechanism, the linkage component is arranged between the driving wheel and the limiting part, so that the one-way rotating gear and the driving wheel or the limiting part are independently matched, and the problem that the adjusting belt slides out when the corresponding mechanism is not driven is effectively avoided.

(4) Aiming at the connection between the adjusting belt and the fixing belt and the foot support, the triangular connection is formed through the arrangement of the connecting piece, so that the structural strength and the stability of the traction and fixation of the adjusting belt are effectively improved.

(5) To above-mentioned fixed band, set up a plurality of archs on its interior table wall to this makes the fixed band can form certain massage effect to user's shank when dressing, thereby improves its travelling comfort of dressing.

(6) To above-mentioned foot holds in the palm, be equipped with bleeder vent and cotton pad, wherein the bleeder vent has effectively guaranteed the gas permeability of foot wearing part, and the cotton pad has effectively guaranteed the laminating nature of foot support and user's foot to improve its travelling comfort of dressing.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the elastic socks and the foot supports of the present invention;

FIG. 3 is a schematic structural view of a connector according to the present invention;

FIG. 4 is a schematic structural view of a length adjustment device according to the present invention;

FIG. 5 is an enlarged view taken at A in FIG. 4;

FIG. 6 is a schematic structural view of the fastening band of the present invention;

in the figure: fixing a belt 1; a connecting member 11; a guide belt part 111; a recess 112; a tape guide roller 113; a bump fixing portion 114; the gap 115; adjusting the row buttons 12; a hanging buckle 13; a projection 14; an elastic sock 2; a toe hole 21; an adjustment belt 3; a length adjusting device 31; a tape guide hole 32; a mounting hole 33; a one-way rotation gear 34; a one-way ratchet 341; a drive wheel 35; a stopper 36; the first spring 361; a mounting plate 362; an engaging arc plate 363; a transmission wheel 37; a guide wheel 38; the link member 39; a guide rod 391; a stopper plate 392; a second spring 393; a foot support 4; air holes 41; a cotton pad 42.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides the following technical solutions: an open-toe adjustable foot drop prevention sock comprising:

the fixing strap 1 is worn and fixed on the crus of a user, one end of the fixing strap 1 is provided with an adjusting row buckle 12, the other end of the fixing strap is provided with a hanging buckle 13, and the hanging buckle 13 is matched with the adjusting row buckle 12; a plurality of bulges 14 are uniformly arranged on the inner surface wall of the fixing band 1, and each bulge 14 comprises a non-woven fabric sewn and connected with the inner surface wall of the fixing band 1 and spherical silica gel arranged between the non-woven fabric and the inner surface wall of the fixing band 1; specifically, based on the arrangement of the bulges 14, the fixing band 1 can have a certain massage effect on the lower legs of a user when being worn, so that the wearing comfort is improved;

the elastic socks 2 are worn and fixed on the feet of the user, five toe holes 21 are formed in the front ends of the elastic socks 2, and five toes of the feet of the user respectively penetrate through the five toe holes 21;

the foot support 4 is sewed and connected with the bottom of the elastic sock 2 and is contacted with the bottom of the foot of the user; the foot support 4 is provided with an air hole 41 and a cotton pad 42, the air hole 41 corresponds to the elastic sock 2, and the cotton pad 42 is positioned at the rear side of the air hole 41; specifically, the arrangement of the air holes 41 enables the whole part worn on the foot of the user to have good air permeation effect, and the arrangement of the cotton pad 42 enables the foot support 4 to be effectively attached to the foot of the user, so that the wearing comfort of the foot support is improved;

two groups of adjusting belts 3 are arranged and are respectively connected with the fixing belt 1 and two sides of the foot support 4;

wherein:

the adjusting belt 3 is provided with a length adjusting device 31, and a one-way tightening mechanism and a one-way loosening mechanism which have the same structure are symmetrically arranged in the length adjusting device 31.

In summary, the use principle and the flow of the toe-exposed adjustable foot drop prevention sock provided by the embodiment of the invention are as follows: the fixing band 1 and the elastic socks 2 are correspondingly worn on the lower legs and the feet of users, wherein the fixing tightness of the fixing band 1 is effectively adjusted under the matching of the hanging buckles 13 and the adjusting row buckles 12 aiming at different fat and thin users, so that the using requirements of different users are met; after the user wears the foot support, the length of the two groups of adjusting belts 3 is adjusted based on the length adjusting device 31, so that the relative positions of the fixing belts 1 and the foot support 4 are limited, the relative positions of the foot and the lower leg of the user are further limited, the foot of the user is supported in a traction mode, and the problem that the foot of the user drops is solved.

Therefore, the foot drop prevention device has the advantages of simple structure, low cost, convenience in use and comfort in wearing, and can effectively adjust the positioning angle between the foot and the shank of the user, so that the foot drop prevention effect is further improved.

In the embodiment of the present invention, taking the above-mentioned one-way tightening mechanism as an example, the specific structure of the overall length adjustment device 31 is described in detail as follows:

please refer to fig. 4:

the one-way tightening mechanism comprises an L-shaped guide belt hole 32 and a mounting hole 33, the mounting hole 33 is positioned at one side of the guide belt hole 32, and a one-way rotating gear 34, a driving wheel 35 and a limiting piece 36 are mounted in the mounting hole 33;

one side of the one-way rotation gear 34 is matched with the guide belt hole 32 to extrude and clamp the adjusting belt 3;

the limiting piece 36 and the driving wheel 35 can move and can be meshed with the one-way rotating gear 34, and when the limiting piece 36 is meshed with the one-way rotating gear 34, the one-way rotating gear 34 is fixed; when the driving wheel 35 is meshed with the unidirectional rotation gear 34, the unidirectional rotation gear 34 rotates unidirectionally;

an interlocking part 39 is connected between the driving wheel 35 and the limiting part 36, and the one-way rotation gear 34 is limited by the interlocking part 39 to be meshed with the driving wheel 35 or the limiting part 36 independently.

Please continue to refer to FIG. 4:

the one-way tightening mechanism further comprises a driving wheel 37 and a guide wheel 38, the driving wheel 37 is matched with the one-way rotating gear 34 and symmetrically distributed on two sides of the guide belt hole 32, the guide wheel 38 is located at a corner of the L-shaped guide belt hole 32, and the guide wheel 38 is in transmission connection with the driving wheel 37.

Please continue to refer to FIG. 4:

the one-way rotating gear 34 includes a ratchet rotatably mounted in the mounting hole 33, and one-way ratchet 341 engaged with one side of the ratchet, and one end of the one-way ratchet 341 away from the ratchet is welded to the inner wall of the mounting hole 33.

Please refer to fig. 5:

the limiting member 36 includes a movable mounting plate 362, and a first spring 361 and an engaging arc plate 363 welded to two sides of the mounting plate 362, wherein the first spring 361 is fixed on the inner wall of the mounting hole 33, and the engaging arc plate 363 is engaged with the unidirectional rotation gear 34.

Please continue to refer to FIG. 5:

the linkage component 39 comprises a limiting plate 392 slidably connected between the driving wheel 35 and the mounting plate 362, and a second spring 393 welded between the limiting plate 392 and the inner wall of the mounting hole 33, wherein a limiting inclined surface is arranged on one side of the mounting plate 362 close to the limiting plate 392, and one end of the limiting plate 392 is matched with the limiting inclined surface.

Please continue to refer to FIG. 5:

the link member 39 further includes a guide rod 391 fixed to an inner wall of the mounting hole 33, and the guide rod 391 penetrates the stopper plate 392 and the second spring 393.

In summary, the working principle of the integral one-way tightening mechanism is as follows:

the body of the length adjusting device 31 is held by hand, the driving wheel 35 in the unidirectional tightening mechanism is pressed by a thumb, so that the driving wheel 35 approaches to the unidirectional rotating gear 34, in the process, the driving wheel 35 drives the limit plate 392 to synchronously move, the limit plate 392 moves along the guide rod 391, the second spring 393 is stretched, meanwhile, the limit inclined surface pushes the mounting plate 362, the mounting plate 362 is driven to move in the direction away from the unidirectional rotating gear 34, and the meshing arc plate 363 is driven to move away from the unidirectional rotating gear 34 and compress the first spring 361; when the driving wheel 35 is engaged with the one-way rotation gear 34, the engaging arc plate 363 is separated from the one-way rotation gear 34, whereby the one-way rotation of the one-way rotation gear 34 can be achieved by dialing the driving wheel 35.

In fig. 3, the rotation direction of the unidirectional rotation gear 34 is counterclockwise rotation, so that the driving wheel 35 is clockwise turned, and when the unidirectional rotation gear 34 rotates counterclockwise, the unidirectional rotation gear cooperates with the driving wheel 37, so that the adjusting belt 3 at a position a in fig. 3 can be unidirectionally guided into the guide belt hole 32, the adjusting belt 3 drives the driving wheel 37 to rotate based on friction during the guiding process, and the driving wheel 37 drives the guide wheel 38 to rotate, so as to cooperate with the guide belt hole 32, so that the adjusting belt 3 can be smoothly guided out of the guide belt hole 32, and the adjusting belt 3 guided out of the guide belt hole 32 is disposed at a position b. The reason is that: in the above-described overall process, only the one-way tightening mechanism is driven, so that the one-way loosening mechanism is still in a non-rotatable state and forms a pressing fixation for the adjusting belt 3 passing through it.

The whole length of the adjusting belt 3 comprises three parts of a/b/c, wherein the part a and the part c realize the traction between the fixing belt 1 and the foot support 4, and the part b is limited between the one-way tightening mechanism and the one-way loosening mechanism and does not play a role in traction; therefore, after the adjusting belt 3 at the position a is guided to the position b, the length of the adjusting belt 3 at the part a is reduced, and the tightening effect of the adjusting belt 3 is effectively achieved.

Based on the same principle, the unidirectional loosening mechanism can be used for guiding the adjusting belt 3 at the position b to the position c in a unidirectional mode, and therefore the loosening operation of the adjusting belt 3 is effectively achieved.

In the embodiment of the invention, the following preferable connection modes are provided for the connection of the adjusting belt 3 with the fixing belt 1 and the foot rest 4:

please refer to fig. 3:

one side of fixed band 1 is fixed with connecting piece 11, and two recesses 112 have been seted up to the correspondence of the bottom of connecting piece 11, and all installs in two recesses 112 and lead area roller 113, and adjusting band 3 walks around and leads area roller 113, and on the both ends of adjusting band 3 all were fixed in the foot and hold in the palm 4, the both ends of adjusting band 3 and lead the cooperation of area roller 113 and form the triangle-shaped structure.

Please continue to refer to FIG. 3:

the connecting member 11 includes a protrusion fixing portion 114 and a guide belt portion 111, the protrusion fixing portion 114 is located between the two grooves 112, and two gaps 115 are formed between the guide belt portion 111 and the fixing belt 1 by the limitation of the protrusion fixing portion 114, and the two gaps 115 are symmetrically distributed on two sides of the protrusion fixing portion 114.

In conclusion, the adjusting belt 3 forms a deformable triangular structure, and traction and fixation between the foot rest 4 and the fixing belt 1 are realized based on the triangular structure, so that the structural strength of traction and fixation is improved, and the stability of traction and fixation is ensured; the gap 115 is provided to prevent the adjusting belt 3 from contacting the fixing belt 1 when passing through the belt guide roller 113, thereby affecting the effective traction of the adjusting belt 3.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.