阅读说明：本技术 绳索固定装置 (Rope fixing device ) 是由 谭坚强 吕应昌 黄淑菲 张润明 邱超文 于 2021-10-28 设计创作，主要内容包括：本发明涉及一种绳索固定装置,包括固定块、压块和驱动源；压块能够在第一位置和第二位置之间移动,在第一位置,压块和固定块之间存在第一间隙,在第二位置,压块和固定块之间存在比第一间隙小的第二间隙,或,压块和固定块贴合；驱动源用于驱动压块在第一位置和第二位置之间移动。上述方案中通过设置固定块和可以在第一位置和第二位置之间移动的压块,使得固定块和压块之间存在可以放置绳索末端的第一间隙,并利用驱动源驱动压块朝更贴近固定块的方向移动,使得位于固定块和压块之间的绳索末端受到压块和固定块之间的挤压,进而使绳索与压块和固定块之间的摩擦力变大,使绳索被牢固在压块和固定块之间,以达到防止绳索的末端松脱或走位的效果。(The invention relates to a rope fixing device, which comprises a fixing block, a pressing block and a driving source, wherein the pressing block is arranged on the fixing block; the pressing block can move between a first position and a second position, a first gap exists between the pressing block and the fixing block at the first position, a second gap smaller than the first gap exists between the pressing block and the fixing block at the second position, or the pressing block is attached to the fixing block; the driving source is used for driving the pressing block to move between the first position and the second position. Through setting up the fixed block and the briquetting that can remove between first position and second position in the above-mentioned scheme, make to exist between fixed block and the briquetting and can place the terminal first clearance of rope, and utilize the drive source drive briquetting to remove towards the direction more pressing close to the fixed block, make the rope end that is located between fixed block and the briquetting receive the extrusion between briquetting and the fixed block, and then make the frictional force grow between rope and briquetting and the fixed block, make the rope firmly between briquetting and fixed block, in order to reach the terminal pine that prevents the rope and take off or walk the effect of position.)

1. A cord securement device, comprising:

a fixed block;

a pressing block movable between a first position in which a first gap exists between the pressing block and the fixing block and a second position in which a second gap smaller than the first gap exists between the pressing block and the fixing block;

a drive source for driving the mass to move between the first position and the second position.

2. A rope fastening system as recited in claim 1, wherein a recess is formed in a side of said attachment block that engages said block, said block being at least partially received in said recess when said block is in said second position.

3. A cord fixation device as recited in claim 2, wherein said compact and said groove are of uniform shape, and said gap is equidistant from each other between a side wall of said compact and a side wall of said groove.

4. A cord fastener as claimed in claim 3, wherein said recess is a stepped recess and the surface of said body which engages said recess is a stepped convex surface adapted to engage said recess.

5. A rope fixing device as recited in claim 1, wherein said drive source is connected to said pressure block by a connecting shaft.

6. A rope fixing device as claimed in claim 5, wherein the fixing block is provided with a through-hole through which the connecting shaft passes and with which the connecting shaft is slidably fitted.

7. A rope fixing device as claimed in claim 6, wherein a stopper is provided between the connecting shaft and the driving source, the stopper being moved between the fixing block and the driving source by the driving source.

8. A rope fixing device as defined in claim 6, wherein a stopper is fitted around said connecting shaft, said stopper being moved between said fixing block and said driving source as said connecting shaft is driven by said driving source.

9. A rope fixing device as claimed in any one of claims 7 or 8 in which a buffer is provided on the side of the block adjacent the fixing block.

10. A rope fixing device as recited in claim 1, and further comprising a mounting plate having one face connecting the fixing block and a fixing plate, and the drive source is connected to the fixing plate and is located between the fixing block and the fixing plate.

Technical Field

The invention relates to the technical field of clamping and fixing equipment, in particular to a rope fixing device.

Background

When using a rope to bind other articles, the tail end of the rope is often fixed, and then the other end of the rope is adjusted to tightly bind the articles. In the prior art, the end of the rope is usually clamped by the clamp, but the rope needs to be pulled forcefully when the other end of the rope is adjusted to tighten and bind the article, the end of the rope is easy to loosen or move, and then the binding effect of the rope on other articles is influenced.

Disclosure of Invention

Therefore, a rope fixing device is needed to be provided, and the problem that the tail end of the rope is easy to loosen or move in the prior art is solved.

The application provides a rope fixing device includes: the device comprises a fixed block, a pressing block and a driving source; the pressing block is movable between a first position in which a first gap exists between the pressing block and the fixed block and a second position in which a second gap smaller than the first gap exists between the pressing block and the fixed block; the drive source is used for driving the pressing block to move between the first position and the second position.

Among the above-mentioned scheme, through setting up the fixed block and the briquetting that can remove between first position and second position, make to exist between fixed block and the briquetting and can place the terminal first clearance of rope, and utilize the drive source drive briquetting to remove towards the direction of more pressing close to the fixed block, make the rope end that is located between fixed block and the briquetting receive the extrusion between briquetting and the fixed block, and then make the frictional force grow between rope and briquetting and the fixed block, make the rope firmly between briquetting and fixed block, in order to reach the terminal pine that prevents the rope and take off or walk the effect of position.

The technical solution of the present application is further described below:

in one embodiment, a groove is formed in one side of the fixing block, which is matched with the pressing block, and when the pressing block is located at the second position, the pressing block is at least partially embedded in the groove.

In one embodiment, the pressing block and the groove are consistent in shape, and gaps are equidistant between the side wall of the pressing block and the side wall of the groove.

In one embodiment, the groove is a stepped groove, and the surface of the pressing block matched with the groove is a stepped convex surface matched with the groove.

In one embodiment, the driving source is connected to the press block through a connecting shaft.

In one embodiment, the fixing block is provided with a through hole, and the connecting shaft passes through the through hole and is in sliding fit with the through hole.

In one embodiment, a stopper is disposed between the connecting shaft and the driving source, and the stopper moves between the fixing block and the driving source under the driving of the driving source.

In one embodiment, the connecting shaft is sleeved with a stopper, and the stopper moves between the fixing block and the driving source along with the connecting shaft under the driving of the driving source.

In one embodiment, a buffer is arranged on one side, close to the fixed block, of the stop block.

In one embodiment, the rope fixing device further comprises a mounting plate, one surface of the mounting plate is connected with the fixing block and the fixing plate, and the driving source is connected with the fixing plate and is positioned between the fixing block and the fixing plate.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a first state view of a rope fixing apparatus according to an embodiment of the present invention;

fig. 2 is a second state view of the rope fixing device in fig. 1 in use;

fig. 3 is another view of the cord fixation device of fig. 1.

Description of reference numerals:

100. a rope fixing device; 110. a fixed block; 111. a groove; 112. a through hole; 120. briquetting; 130. a drive source; 140. a connecting shaft; 141. a stopper; 150. mounting plate, 160, fixed plate.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

At present, the rope fixing device has a very wide application range. The rope fixing device is not only applied to the fields of industry, life and building to play the functions of traction, tensioning and bearing, but also can be applied to daily life or industrial packing flow to play the role of auxiliary fixing. With the increasingly wide field of use of rope fixing devices, user demands for rope fixing devices are becoming abundant.

The inventor notices that the tail end of the rope is easy to loosen or move from the original fixed state along with the forced pulling of one end of the article bound by the rope, and the reason is that the tail end of the rope is not firmly fixed and can bear too small pulling force. The tail end of the rope is loosened or moved to a position so as to easily influence the effect of fastening and binding the object by the rope, and if the rope plays a role in traction and bearing, the tail end of the rope is loosened or moved to the position so as to possibly have potential safety hazards.

As a solution to the problem that the end of the rope is easily loosened or dislocated, the end of the rope may be nailed with a nail to a fixed object such as a wooden pile or a wall. When the nailed rope is pulled by force, the rope can be divided by the nail, so that the thick rope originally combined by the multiple strands of thin ropes is divided into the multiple strands of thin ropes again, and the state of the rope is damaged. It is obvious that the method of solving the problem in such a state that the rope itself is broken cannot be used as a solution to the problem that the end of the rope is easily loosened or moved.

In order to solve the problem that the tail end of the rope is easy to loosen or move, the inventor finds that the rope can be fixed between the pressing block and the fixing block, the pressing block and the fixing block extrude the rope, and then the friction force between the rope and the pressing block and the fixing block is increased, so that the tail end of the rope is firm and is not easy to loosen or move.

The rope fixing device disclosed by the embodiment of the application can be applied to an industrial packaging process as a fixing tool at the tail end of a rope, and can also be applied to the fields of daily life and buildings to play a role in traction, drawing or bearing.

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

Referring to fig. 1 and 2, a rope fixing device 100 according to an embodiment of the present invention includes a fixing block 110, a pressing block 120, and a driving source 130. Referring to fig. 1 and 2, the pressing block 120 is movable between a first position and a second position. As shown in fig. 1, when the pressing block 120 is at the first position, a first gap exists between the pressing block 120 and the fixing block 110. As shown in fig. 2, when the pressing block 120 is at the second position, a second gap smaller than the first gap exists between the pressing block 120 and the fixing block 110, or the pressing block 120 and the fixing block 110 are attached. The driving source 130 is for driving the pressing block 120 to move between the first position and the second position.

It is understood that the pressing block 120 can move between a first position and a second position, wherein the first position and the second position are two end points of the movable distance of the pressing block 120, respectively, and it is not limited to that the pressing block 120 is located at the first position to place the end of the rope between the pressing block 120 and the fixing block 110, and it is not limited to that the pressing block 120 and the fixing block 110 are located at the second position to press and fix the end of the rope. The pressing block 120 and the fixing block 110 can press the tail end of the rope in the process of moving from the first position to the second position.

It will also be appreciated that during movement of the weight 120 from the first position towards the second position, continued movement will only be stopped when the weight 120 reaches the second position, due to the weight 120 being driven by the drive, or, although the weight 120 has not yet reached the second position, the cable between the weight 120 and the fixed block 110 has already been subject to the pressing force on the cable by the drive and the cable cannot continue to be compressed.

When the pressing block 120 is located at the second position, a second gap smaller than the first gap may exist between the pressing block 120 and the fixing block 110. The second gap may be zero, that is, the pressing block 120 and the fixing block 110 may be attached to each other without a gap. It is understood that when the pressing block 120 is configured such that the pressing block 120 is located at the second position and a second gap exists between the pressing block 120 and the fixing block 110, the pressing block 120 gradually presses the end of the rope while moving from the first position to the second position, and the pressing block 120 may stop while moving from the first position to the second position or after moving the pressing block 120 to the second position, and the rope is pressed in the second gap. When the pressing block 120 is set to be located at the second position and the pressing block 120 and the fixing block 110 are set to be in the attaching state, the pressing block 120 gradually extrudes the tail end of the rope in the process of moving from the first position to the second position, and the pressing block 120 stops in the process of moving from the first position to the second position. It should be noted that, when the pressing block 120 stops during the movement from the first position to the second position, when the pressing block 120 is located at the stop position, there is a pressing force between the pressing block 120 and the fixing block 110 against the end of the rope.

It will be appreciated that the first and second gaps both function to accommodate the rope ends. Since the second gap is smaller than the first gap, the end of the rope is pressed by the pressing block 120 and the fixing block 110 in the second gap than in the first gap. The pressing force of the pressing block 120 and the fixing block 110 to the end of the rope makes the friction between the end of the rope and the pressing block 120 and the fixing block 110 large, so that the rope is firmly fixed between the pressing block 120 and the fixing block 110, thereby achieving the effect of preventing the end of the rope from being loosened or dislocated.

As shown in fig. 1 and 2, in using the rope fixing apparatus 100 provided in the present application: when the pressing block 120 is located at the first position, the end of the rope is placed in the first gap between the pressing block 120 and the fixing block 110. The pressing block 120 is then driven by the driving source 130 to move from the first position toward the second position, and the end of the rope placed between the pressing block 120 and the fixing block 110 is gradually pressed during the movement. When the driving source 130 drives the pressing block 120 to move to the second position, the end of the rope is pressed in the second gap smaller than the first gap, or the pressing block 120 stops during the movement from the first position to the second position, and when the pressing block 120 is located at the stop position, there is a pressing force between the pressing block 120 and the fixed block 110 to the end of the rope. The end of the rope is pressed by the pressing block 120 and the fixing block 110, so that the friction between the rope and the pressing block 120 and the fixing block 110 is increased, and the rope is firmly fixed between the pressing block 120 and the fixing block 110, thereby achieving the effect of preventing the end of the rope from loosening or moving.

In the above scheme, by providing the fixing block 110 and the pressing block 120 capable of moving between the first position and the second position, a first gap capable of placing the tail end of the rope exists between the fixing block 110 and the pressing block 120, and the driving source 130 is used for driving the pressing block 120 to move towards the direction closer to the fixing block 110, so that the tail end of the rope located between the fixing block 110 and the pressing block 120 is squeezed between the pressing block 120 and the fixing block 110, and further the friction force between the rope and the pressing block 120 and the fixing block 110 is increased, so that the rope is firmly fixed between the pressing block 120 and the fixing block 110, and the effect of preventing the tail end of the rope from loosening or moving is achieved.

It will be appreciated that the function of the drive member is to provide power for movement of the mass 120 between the first and second positions and to maintain the mass 120 in a rest position when the mass 120 is stopped, preventing the mass 120 from being moved by external forces. The driving member can be a heat engine, an electric motor or a cylinder and the like. In a specific arrangement, the driving source 130 is a telescopic cylinder or a telescopic motor.

Referring to fig. 1 and 2, in a specific arrangement, a groove 111 is formed on a side of the fixing block 110, which is matched with the pressing block 120, and when the pressing block 120 is located at the second position, the pressing block 120 is at least partially embedded in the groove 111.

It will be appreciated that the recess 111 serves to accommodate the weight 120 and the rope between the weight 120 and the fixing block 110. The shape of the groove 111 is not limited to the circular shape shown in fig. 1, and may be a triangle, a rectangle, a diamond, or another polygon.

When the pressing block 120 moves from the first position to the second position, if the pressing block 120 stops at the second position, the pressing block 120 may be partially inserted into the groove 111, and the pressing block 120 may be completely inserted into the groove 111, so that the rope is located inside the groove 111 when the pressing block 120 presses the rope between the pressing block 120 and the fixing block 110. At this time, the rope may contact and generate friction with the side wall of the groove 111 inside the groove 111, further reinforcing the firm effect of the rope. And a part of the rope between the rope inside the groove 111 and the rope outside the groove 111 needs to pass between the side wall of the pressing block 120 and the side wall of the groove 111. The rope passing through the side wall of the pressing block 120 and the side wall of the groove 111 and the rope pressed between the pressing block 120 and the fixing block 110 are respectively in two planes and are perpendicular to each other, so that the tensile force applied to the rope is dispersed in multiple directions, and the fastening effect of the rope is better.

When the pressing piece 120 moves from the first position to the second position, the pressing piece 120 stops before reaching the second position, at this time, although the pressing piece 120 does not reach the second position yet, the rope between the pressing piece 120 and the fixed block 110 is subjected to the pressing force of the pressing piece 120 on the rope provided by the driving piece, and the rope cannot be compressed continuously. Therefore, the rope in this case may contact with the side wall of the groove 111 and generate friction inside the groove 111, thereby further reinforcing the fastening effect of the rope.

Through seting up recess 111 in one side of fixed block 110 for when briquetting 120 was located the second position, briquetting 120 can inlay in recess 111, thereby makes when briquetting 120 extrudeed the rope end fixedly, the rope still received the frictional force that the lateral wall of recess 111 provided or changes the pulling force that the direction of rope received with the dispersion rope, and then consolidates the firm effect of rope.

Preferably, the pressing block 120 and the groove 111 have the same shape, and the gaps between the side wall of the pressing block 120 and the side wall of the groove 111 are equidistant. For example, the groove 111 is a circular groove as shown in fig. 1, the pressing piece 120 is a cylindrical shape fitted to the groove 111, the pressing piece 120 and the groove 111 are coaxially arranged, and the diameter of the pressing piece 120 is smaller than the bore diameter of the groove 111.

Set up to the unanimity through the shape with briquetting 120 and recess 111 to reserve the equidistance clearance between the lateral wall of briquetting 120 and recess 111, when making the rope between briquetting 120 and recess 111, the atress is more balanced, and the unilateral of avoiding briquetting 120 is more with the rope contact, makes the rope extruded unevenly, briquetting 120 atress uneven, and the rope that causes is by the poor or the cracked risk of briquetting 120 of fixed effect.

The gap existing between the side wall of the pressing block 120 and the side wall of the groove 111 can be adjusted according to the thickness of the rope. Preferably, the gap between the side wall of the pressing block 120 and the side wall of the groove 111 is set such that the rope is rubbed by the side wall of the pressing block 120 and the side wall of the groove 111 when passing through the gap. By the arrangement, when the rope is pressed in the groove 111, the rope passing through the space between the side wall of the pressing block 120 and the side wall of the groove 111 is rubbed by the side wall of the pressing block 120 and the side wall of the groove 111, and the firm effect of the rope is further strengthened.

In a specific arrangement, the groove 111 is a stepped groove, and the surface of the pressing block 120 matching with the groove 111 is a stepped convex surface matching with the groove 111.

By arranging the groove 111 as a stepped groove and arranging the pressing block 120 as a stepped convex surface, when the pressing block 120 presses the victory end inside the groove 111, the friction force provided by the side wall of the groove 111 on the rope is more, thereby reinforcing the firm effect of the rope.

Referring to fig. 1, in a specific arrangement, the driving source 130 is connected to the pressing block 120 through a connecting shaft 140.

It can be understood that the connecting shaft 140 is used for connecting the pressing block 120 and the driving source 130, so that the driving source 130 drives the pressing block 120 to move between the first position and the second position by driving the connecting shaft 140 to move.

It is understood that the shape and structure of the connecting shaft 140 are not limited, and may be a cylindrical structure as shown in fig. 1, or a polygonal prism, etc., as long as the connecting function of the connecting shaft 140 can be achieved.

It is understood that both ends of the connecting shaft 140 are connected to the driving source 130 and the pressing block 120, respectively. The connection mode of the connection shaft 140 and the driving source 130, and the connection mode of the connection shaft 140 and the pressing block 120 may be detachable connection or fixed connection, for example, threaded connection by means of bolts, or welding connection.

By arranging the connecting shaft 140 between the driving source 130 and the pressing block 120, after the driving source 130 and the fixing block 110 are fixed, if the matching distance between the pressing block 120 and the fixing block 110 needs to be adjusted, the distance between the pressing block 120 and the fixing block 110 can be adjusted by replacing the connecting shaft 140, so that the pressing block 120 and the fixing block 110 can extrude and fix the tail end of the rope conveniently.

It is understood that the connecting shaft 140 may be connected to a side of the pressing block 120 near the fixing block 110, or may be connected to a side of the pressing block 120 far from the fixing block 110. When the connecting shaft 140 is connected to a side of the pressing block 120 near the fixing block 110, the extended state of the driving source 130 corresponds to a first position of the pressing block 120, and the contracted state of the driving source 130 corresponds to a second position of the pressing block 120. When the connecting shaft 140 is connected to a side of the pressing block 120 far from the fixing block 110, the extended state of the driving source 130 corresponds to the second position of the pressing block 120, and the contracted state of the driving source 130 corresponds to the first position of the pressing block 120.

Referring to fig. 1, in the present embodiment, the connecting shaft 140 is connected to a side of the pressing block 120 close to the fixing block 110. Further, the fixing block 110 is provided with a through hole 112, and the connecting shaft 140 passes through the through hole 112 and is in sliding fit with the through hole 112.

It is understood that the through hole 112 is disposed through the fixing block 110, and is used for providing a passage for the connecting shaft 140 to pass through the fixing block 110 and to be slidably engaged with the connecting shaft 140. The shape of the through hole 112 is not limited, but the size of the through hole 112 is enough for the connection shaft 140 to pass through, and the through hole 112 may be identical to the shape of the connection shaft 140, for example, as shown in fig. 1, the through hole 112 and the connection shaft 140 are both circular in cross section, and the diameter of the through hole 112 is larger than the diameter of the connection shaft 140.

It can be understood that the through hole 112 is disposed in a direction consistent with a moving path of the pressing block 120 between the first position and the second position, so that the driving source 130 drives the connecting shaft 140 to slide in the through hole 112, and further drives the pressing block 120 to move between the first position and the second position.

Through setting up through-hole 112 at fixed block 110 to pass through-hole 112 with connecting axle 140 and with through-hole 112 sliding fit, make when briquetting 120 is located the first position, when placing the rope end between briquetting 120 and fixed block 110, can be with the terminal winding of rope in the connecting axle 140 outside, can be equipped with preliminary fixed to the rope through the terminal winding mode of rope, also can make the rope difficult knot through regular winding.

Referring to fig. 1, 2 and 3, in a specific arrangement, a stopper 141 is disposed between the connecting shaft 140 and the driving source 130, and the stopper 141 moves between the fixed block 110 and the driving source 130 under the driving of the driving source 130.

It is understood that the stopper 141 functions to limit the moving distance of the driving source 130. When the rope filled between the pressing block 120 and the fixing block 110 is too much, the pressing block 120 may generate a reverse pulling force to the driving source 130 through the connecting shaft 140, so that the telescopic end of the driving source 130 tends to exceed the stroke range. By arranging the stopper 141 between the connecting shaft 140 and the driving source 130, the stopper 141 is in contact with the fixing block 110, the counter-pulling force of the pressing block 120 on the driving source 130 is counteracted, and the phenomenon that the driving source 130 is stretched and blocked or the driving source 130 is damaged due to the fact that the telescopic part of the driving source 130 exceeds the stroke range is avoided.

In a specific arrangement, the connecting shaft 140 is sleeved with a stopper 141, and the stopper 141 moves between the fixing block 110 and the driving source 130 along with the driving of the driving source 130 by the connecting shaft 140.

It can be understood that the stopper 141 may be sleeved outside the connecting shaft 140, and the stopper 141 and the connecting shaft 140 may be detachably connected or fixedly connected. When the stopper 141 is fitted around the connecting shaft 140, the distance between the stopper 141 and the fixing block 110 may be adjusted according to the stroke of the driving source 130 and/or the thickness of the end of the rope filled between the fixing block 110 and the pressing block 120.

In a specific arrangement, a buffer is disposed on a side of the stopper 141 near the fixed block 110.

It is understood that the buffer member, which is used for the action force when the buffer stopper 141 contacts the fixed block 110, may be a buffer sheet made of a flexible material or a buffer structure made of an elastic device. In this embodiment, the buffer is a rubber pad.

By providing the buffer member between the stopper 141 and the fixed block 110, the force generated by the stopper 141 to the fixed block 110 when moving toward the fixed block 110 can be buffered, and damage to the movable fixed block 110 of the stopper 141 due to multiple collisions between the stopper 141 and the fixed block 110 can be avoided.

Referring to fig. 1, in a specific configuration, the rope fixing apparatus 100 further includes a mounting plate 150, one surface of the mounting plate 150 is connected to the fixing block 110 and the fixing plate 160, and the driving source 130 is connected to the fixing plate 160 and is located between the fixing block 110 and the fixing plate 160.

It is understood that the fixing block 110 and the fixing plate 160 are both connected to the mounting plate 150 in a detachable or fixed manner, for example, by screwing with bolts, or by welding, integral molding, etc.

By connecting the driving source 130 to the fixing plate 160, the driving source 130 can be fixed relative to the fixing block 110, so that when the driving source 130 drives the pressing block 120 to extrude the rope, the reaction force of the rope on the pressing block 120 is prevented from driving the driving source 130 to move, and the fixing effect of the rope is prevented from being poor.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.