阅读说明：本技术 连接组件、前护杠及汽车 (Coupling assembling, preceding fender thick stick and car ) 是由 陈贻佳 陈昌彪 于 2020-06-04 设计创作，主要内容包括：本发明涉及一种连接组件、前护杠及汽车,包括：连接座,连接座用于与车体组装固定；第一连接件,连接座还用于通过第一连接件与护杠本体转动连接；固定件；及第二连接件,固定件用于通过第二连接件与护杠本体活动连接,且固定件能够锁定或释放连接座。当需要对驾驶室下方的发动机灯等部件进行维修保养时,可操作固定件移动而释放连接座,此时连接座仍然与车体连接不动,而前护杠可以以第一连接件为转动支点跟随驾驶室一同翻转而露出下方的待维保部件,无需将前护杠完全整体从车体上拆除下来,且当维保作业结束后,将驾驶室翻转复位,再次移动固定件将连接座锁定即可再次固定前护杠。可大幅减少工人工作量和劳动强度,提高维保作业效率。(The invention relates to a connecting component, a front bumper and an automobile, comprising: the connecting seat is used for being assembled and fixed with the vehicle body; the connecting seat is also used for being rotationally connected with the protective bar body through the first connecting piece; a fixing member; and the fixing piece is movably connected with the protective bar body through the second connecting piece and can lock or release the connecting seat. When parts such as an engine lamp and the like below a cab need to be maintained, the fixing piece can be operated to move to release the connecting seat, the connecting seat is still connected with a vehicle body and is still fixed, the front protective bar can turn over along with the cab by taking the first connecting piece as a rotating fulcrum to expose the part to be maintained below, the front protective bar does not need to be completely and integrally detached from the vehicle body, the cab is turned over and reset after maintenance operation is finished, and the fixing piece is moved again to lock the connecting seat to fix the front protective bar again. The workload and the labor intensity of workers can be greatly reduced, and the maintenance operation efficiency is improved.)

1. A connection assembly, characterized in that the connection assembly comprises:

the connecting seat is used for being assembled and fixed with the vehicle body;

the connecting seat is also used for being rotationally connected with the protective bar body through the first connecting piece;

a fixing member; and

the fixing piece is used for being movably connected with the guard bar body through the second connecting piece, and the fixing piece can lock or release the connecting seat.

2. The connecting assembly according to claim 1, wherein the connecting base includes a base body and a connecting arm provided on the base body, and the connecting arm is provided with a connecting portion for assembly connection with the vehicle body.

3. The connection assembly according to claim 2, wherein the connection portion is provided as a socket for plugging with a predetermined plug post on the vehicle body.

4. The connecting assembly according to claim 2, wherein the connecting base further comprises a base cylinder, a bolt and a nut, the base cylinder is arranged on the base body and provided with a through hole, the nut is arranged on the connecting arm and placed in the base cylinder, the bolt passes through the through hole and is in threaded connection with the nut, and the connecting arm is slidably inserted in the base cylinder.

5. The connecting assembly according to claim 4, wherein the connecting base further comprises a clamping plate, the clamping plate is disposed on the base body, and the clamping plate is provided with a clamping groove for clamping with a clamping body preset on the vehicle body.

6. The connection assembly of claim 4, wherein the connection mount further comprises a stiffening rib connected at a connection of the mount body and the mount barrel.

7. The connection assembly according to claim 2, wherein the bottom of the seat body is provided with an arc recess for rotational engagement with the bumper body.

8. The connecting assembly according to any one of claims 2 to 7, wherein the fixing member defines a vertically extending elongated slot, the bumper body defines a mounting hole opposite to the elongated slot, the second connecting member is inserted into the elongated slot and the mounting hole and is capable of locking or releasing the fixing member and the bumper body, and when the second connecting member releases the fixing member and the bumper body, the fixing member is capable of moving up and down relative to the bumper body; the fixing piece is further provided with a bayonet which can be inserted into or separated from the seat body.

9. A front fender, comprising a fender body and a connecting assembly according to any one of claims 1 to 8.

10. An automobile comprising a front fender according to claim 9 or a connecting assembly according to any one of claims 1 to 8.

Technical Field

The invention relates to the technical field of automobile accessories, in particular to a connecting assembly, a front bumper and an automobile.

Background

Currently, for vehicles working in complex working conditions, such as trucks, heavy-duty trains, etc., in order to improve self-protection capability, avoid being damaged seriously by the impact of foreign objects, and even affect service life, protective parts are usually installed on the periphery of the vehicle body, which includes a front bumper installed on the front of the vehicle head.

In general, a front bumper is assembled to a vehicle body and is disposed outside a cab, and when maintenance of components such as an engine lamp is required, the cab needs to be tilted forward to expose the components to be maintained therebelow. Before the operation, in order to avoid interference on overturning of the cab, the front bumper is required to be completely disassembled, and after the maintenance operation is finished, the front bumper is installed again, so that the operation is time-consuming and labor-consuming, the labor intensity of workers is high, and the maintenance operation efficiency is influenced.

Disclosure of Invention

Based on this, it is necessary to provide a coupling assembling, preceding fender thick stick and car, aims at solving prior art maintenance operation and wastes time and energy, and intensity of labour is big, the problem that the operating efficiency is low.

In one aspect, the present application provides a connection assembly comprising:

the connecting seat is used for being assembled and fixed with the vehicle body;

the connecting seat is also used for being rotationally connected with the protective bar body through the first connecting piece;

a fixing member; and

the fixing piece is used for being movably connected with the guard bar body through the second connecting piece, and the fixing piece can lock or release the connecting seat.

The connecting component of the scheme is an automobile accessory, is particularly used in the occasion of assembling and connecting the front bumper and an automobile, can enable the front bumper to be overturned without completely disassembling the cab, and is convenient to maintain. Specifically, during assembly, the connecting seat is assembled and fixed with the automobile body of the automobile, and the connecting seat and the protective bar body form a rotating connection relationship through the first connecting piece; in addition, the fixing piece is movably connected with the protective bar body through the second connecting piece, the connecting seat can be locked by the fixing piece, the front protective bar can be firmly assembled and fixed on the automobile through the connecting component, and the front protective bar is located on the front side of the cab and can play a good front side protection role on the automobile. However, when maintenance of components such as an engine lamp below the cab needs to be carried out, the fixing piece can be operated to move to release the connecting seat, the connecting seat is still connected with the vehicle body and is still fixed, the front protective bar can turn forwards along with the cab by taking the first connecting piece as a rotating fulcrum to expose the components to be maintained below, so that the front protective bar does not need to be completely and integrally detached from the vehicle body, the cab is turned over and reset after maintenance operation is finished, and the fixing piece is moved again to lock the connecting seat to fix the front protective bar again. Compare in traditional preceding fender thick stick mounting structure, adopt the coupling assembling installation back of this application, the fender thick stick need not to assemble again after whole dismantlement from the car completely during maintenance, can reduce workman work load and intensity of labour by a wide margin, and labour saving and time saving improves maintenance operating efficiency.

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

in one embodiment, the connecting base comprises a base body and a connecting arm, the connecting arm is arranged on the base body, and the connecting arm is provided with a connecting part used for being assembled and connected with the vehicle body.

In one embodiment, the connecting portion is provided as a jack, and the jack is used for being plugged with a preset plug post on the vehicle body.

In one embodiment, the connecting seat further includes a seat barrel, a bolt and a nut, the seat barrel is disposed on the seat body and has a through hole, the nut is disposed on the connecting arm and is disposed in the seat barrel, the bolt passes through the through hole and is in threaded connection with the nut, and the connecting arm is slidably inserted in the seat barrel.

In one embodiment, the connecting seat further comprises a clamping plate, the clamping plate is arranged on the seat body, the clamping plate is provided with a clamping groove, and the clamping groove is used for being clamped with a clamping body preset on the vehicle body.

In one embodiment, the connecting seat further comprises a stiffening rib plate, and the stiffening rib plate is connected to the connecting position of the seat body and the seat barrel.

In one embodiment, the bottom of the seat body is provided with an arc-shaped concave part, and the arc-shaped concave part is used for being in rotating fit with the protective bar body.

In one embodiment, the fixing piece is provided with a long slotted hole extending vertically, the bumper body is provided with a mounting hole opposite to the long slotted hole, the second connecting piece penetrates through the long slotted hole and the mounting hole and can lock or release the fixing piece and the bumper body, and when the second connecting piece releases the fixing piece and the bumper body, the fixing piece can move up and down relative to the bumper body; the fixing piece is further provided with a bayonet which can be inserted into or separated from the seat body.

In another aspect, the present application also provides a front bumper including the connection assembly as described above.

In addition, the application also provides an automobile which comprises the front bumper or the connecting component.

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 schematic structural view of a front bumper according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;

fig. 3 is an exploded view of a connecting assembly according to an embodiment of the present invention.

Description of reference numerals:

10. a connecting seat; 11. a seat body; 111. a cambered surface recess; 12. a connecting arm; 121. a connecting portion; 13. a seat cylinder; 14. a bolt; 15. a nut; 16. clamping a plate; 161. a card slot; 17. a stiffening rib plate; 20. a first connecting member; 30. a bumper body; 40. a fixing member; 41. a long slot hole; 42. a bayonet; 50. a second connecting member.

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.

The embodiment of the application provides an automobile which can be various types of vehicles commonly found on the market. In this embodiment, the vehicle is specifically a truck, a heavy truck, an off-road vehicle, an SUV, etc. because such vehicles frequently run on a road with complex working conditions and environments, there are many potential safety hazards.

Trucks are used for example in many work situations for transporting goods over great distances. When the truck runs in environments such as mountainous areas, countryside and the like, the collision between the truck and peripheral hard objects is easily caused due to the existence of stones, uneven ground, collapse positions and the like around the truck, so that the risk of scraping paint, collision deformation and even damage of the truck is caused.

For this reason, for the vehicle of the above type, a front bumper is attached to the vehicle body in addition to the vehicle body; wherein the front bumper includes a bumper body 30 and a connecting assembly. Specifically, the bumper body 30 is indirectly attached to the head portion of the vehicle body via a connecting member. That is, for trucks, a front bumper is generally installed right in front of a cab for achieving vehicle frontal collision protection.

Of course, it should be noted that the automobile may include only the left side bumper, the right side bumper and the connecting component, but the front bumper is not additionally installed on the front side. The left side fender bar passes through coupling assembling and installs the left side at the automobile body this moment, and the right side fender bar passes through coupling assembling and installs the right side at the automobile body to the side direction collision protection to the left and right sides of car is realized.

The bumper body 30 is generally of a sheet metal structure, i.e., a frame structure formed by welding sheet metal parts. For example, in the present embodiment, the bumper body 30 includes an upper protective tube, a lower protective tube, a left end plate, a right end plate, and at least one middle reinforcing plate. The upper protective pipe and the lower protective pipe are horizontally arranged at intervals, and the middle reinforcing plate is connected with the upper protective pipe and the lower protective pipe respectively and is positioned in the middle of the upper protective pipe and the lower protective pipe or close to the middle.

Preferably, the number of the middle reinforcing plates in the embodiment is two, and the middle reinforcing plates are uniformly arranged at the middle positions of the upper protective pipe and the lower protective pipe at intervals. It can be understood that the number of the middle reinforcing plates, particularly related to the lengths of the upper protective pipe and the lower protective pipe, can be selected according to actual needs under the condition of ensuring the structural strength.

The left end plate is connected with the same end of the upper protection pipe and the lower protection pipe, and the right end plate is connected with the same other end of the upper protection pipe and the lower protection pipe. From this, go up pillar, left end board and right-hand member board cooperation and constitute confined power transmission chain down, the structure is firm and intensity is high, possesses splendid protective capacities.

Of course, in other embodiments, the bumper body 30 may have other structural compositions and shapes, and all of them can be regarded as modifications of the above embodiments, and are also within the scope of the present application.

Fig. 1 and 2 are assembly structural views of a front bumper, that is, a bumper body 30 and a connecting component, according to an embodiment of the present invention. Wherein, the connecting components comprise two groups and are symmetrically arranged by the central line of the bumper body 30. The connecting assembly includes: the connecting seat 10, the first connecting member 20, the fixing member 40 and the second connecting member 50. The connecting seat 10 serves as an intermediate coupling member to connect the bumper body 30 and the vehicle body as a single body.

In other words, in this embodiment, the connecting seat 10 is used for being assembled and fixed with the vehicle body; the connecting seat 10 is also used for being rotatably connected with the bumper body 30 through the first connecting piece 20. In addition, the fixing member 40 is used to be movably connected to the bumper body 30 through the second connecting member 50, and the fixing member 40 can lock or release the connecting seat 10.

In summary, the implementation of the technical solution of the present embodiment has the following beneficial effects: the connecting component of the scheme is an automobile accessory, is particularly used in the occasion of assembling and connecting the front bumper and an automobile, can enable the front bumper to be overturned without completely disassembling the cab, and is convenient to maintain. Specifically, during assembly, the connecting seat 10 is assembled and fixed with the body of the automobile, and the connecting seat 10 is also in a rotating connection relationship with the bumper body 30 through the first connecting piece 20; in addition, the fixing member 40 is movably connected with the bumper body 30 through the second connecting member 50, and the fixing member 40 can lock the connecting seat 10, so that the front bumper can be firmly assembled and fixed on the automobile through the connecting member, and the front bumper is positioned at the front side of the cab to play a good front side protection role on the automobile. However, when maintenance of components such as engine lights and the like below the cab is required, the fixing member 40 can be operated to move to release the connecting seat 10, at this time, the connecting seat 10 is still connected with the vehicle body, and the front bumper can be turned forwards along with the cab by taking the first connecting member 20 as a rotation fulcrum to expose the components to be maintained below, so that the front bumper is not required to be completely and integrally detached from the vehicle body, and after the maintenance operation is finished, the cab is turned over to reset, and the fixing member 40 is moved again to lock the connecting seat 10, so that the front bumper can be fixed again. Compare in traditional preceding fender thick stick mounting structure, adopt the coupling assembling installation back of this application, the fender thick stick need not to assemble again after whole dismantlement from the car completely during maintenance, can reduce workman work load and intensity of labour by a wide margin, and labour saving and time saving improves maintenance operating efficiency.

Referring to fig. 1 to fig. 3, on the basis of the above embodiments, in still other embodiments, the connecting seat 10 includes a seat body 11 and a connecting arm 12, the connecting arm 12 is disposed on the seat body 11, and the connecting arm 12 is provided with a connecting portion 121 for assembling and connecting with the vehicle body.

In this embodiment, seat body 11 generally sets up to the bent sheet metal component of L type, and the wholeness is good, and structural strength is high. The integrative welding of the indent position of seat body 11 has the strengthening rib to further improve seat body 11's structural strength. One side plate of the seat body 11 is parallel to and attached to the middle reinforcing plate, and the other side plate is perpendicular to the middle reinforcing plate and parallel to the outer shell surface of the cab. And seat body 11 is on a parallel with the middle reinforcing plate near the bottom edge position and has seted up first through-hole, and middle reinforcing plate has seted up the second through-hole that is relative and communicate with first through-hole. The first connecting member 20 includes a screw and a nut, the screw passes through the first through hole and the second through hole and then can be connected and fixed with the seat body 11 and the bumper body 30 by screwing with the nut, and the screw plays a role of a rotating shaft at the moment, but after the nut is unscrewed, the bumper body 30 can rotate relative to the seat body 11 by using the screw as the rotating shaft. Specifically, the bumper body 30 is turned toward the front of the automobile.

Further, the first connecting member 20 further includes a stepped sleeve, a small-diameter section of the stepped sleeve is inserted into the second through hole, the stepped sleeve can be installed and positioned, and the small-diameter section is inserted into the first through hole at the same time. At the moment, the screw penetrates through the inner cylinder cavity of the stepped sleeve and is in threaded connection with the nut. Therefore, when the bumper body 30 rotates relative to the seat body 11, the stepped sleeve can serve as an intermediate barrier to reduce wear, and prevent the screw from wearing the hole wall, which results in unstable shake and noise of the bumper body 30.

With reference to fig. 3, on the basis of the above embodiment, the connection portion 121 is preferably configured as a plug hole, and the plug hole is used for plugging with a plug post preset on the vehicle body. The seat body 11 can be fast and firmly assembled and fixed with the vehicle body, the connection mode structure and the assembly and disassembly operation are convenient and labor-saving, and the manufacturing and using cost is low. Particularly, the aperture of jack and the diameter adaptation of inserting the post to guarantee to insert the post and can fasten the grafting in the jack, avoid influence such as vibration and cause the pine to take off.

Of course, it should be noted that in other embodiments, the connection portion 121 may be another connection member, so that the connection portion 121 and the insert column can be assembled and fixed by other manners, such as a snap connection, a magnetic connection, and a welding.

Referring to fig. 1 and fig. 3, in some embodiments, the connecting base 10 further includes a base cylinder 13, a bolt 14 and a nut 15, the base cylinder 13 is disposed on the base body 11 and has a through hole, the nut 15 is disposed on the connecting arm 12 and is disposed in the base cylinder 13, the bolt 14 passes through the through hole and is screwed with the nut 15, and the connecting arm 12 is slidably inserted into the base cylinder 13.

Specifically, the seat cylinder 13 is provided with a square structure, one end of the seat cylinder 13 is integrally formed on the seat body 11, and the seat cylinder 13 extends in a direction away from the guard bar body 30. The opening of the seat cylinder 13 is opposite to the vehicle body. The through hole is formed on the bottom wall of the seat barrel 13, and the nut 15 is fixedly arranged at the tail end of the connecting arm 12 (the tail end is positioned in the seat barrel 13) through any one of clamping, welding or riveting. When the bolt is installed, the bolt 14 penetrates through the through hole to be connected with the nut 15, and the bolt 14 is screwed, so that the extending length of the connecting part 121 can be adjusted along with the transmission effect of the thread pair, and the installation requirements of inserting columns with different sizes and different distances are met. Moreover, the connecting arm 12 is in contact with the inner wall of the seat barrel 13, so that the seat barrel 13 can play a role in guiding and limiting the telescopic movement of the connecting arm 12 so as to ensure the alignment and connection precision of the connecting part 121 and the inserted column.

With reference to fig. 1 and fig. 3, further, on the basis of the above embodiment, the connecting seat 10 further includes a clamping plate 16, the clamping plate 16 is disposed on the seat body 11, and the clamping plate 16 is provided with a clamping slot 161, and the clamping slot 161 is used for being clamped with a clamping body preset on a vehicle body. During the process of screwing the bolt 14, the bolt 14 pushes the seat cylinder 13 to drive the seat body 11 and the bumper body 30 to gradually approach the cab, in the process, the clamping body preset on the vehicle body is gradually clamped into the clamping groove 161 preset on the clamping plate 16, and the clamping body and the clamping groove 161 form a clamping structure, so that the seat body 11 can clamp the pillar vehicle body more firmly, and the stress capacity of the bumper body 30 is enhanced.

Preferably, the slot 161 is an arc-shaped slot, and the ground engaging member is an arc-shaped protrusion. Thus, the card body can be easily clamped into the clamping groove 161 even if machining size and assembly errors exist, and alignment deviation exists between the card body and the clamping groove 161.

With reference to fig. 3, in addition, on the basis of any of the above embodiments, the connecting socket 10 further includes a stiffening rib 17, and the stiffening rib 17 is connected to a connection portion between the socket body 11 and the socket barrel 13. The stiffening rib plate 17 is vertically arranged and is specifically connected between the bottom wall of the seat barrel 13 and the side wall of the seat barrel 11, so that the connection strength of the seat barrel 11 and the seat barrel 13 can be effectively improved, and the seat barrel is prevented from being deformed or even broken when being stressed excessively.

Optionally, the number of the stiffening rib plates 17 may be two or more, and is specifically set according to actual needs.

With reference to fig. 3, in addition to any of the above embodiments, an arc concave portion 111 is disposed at the bottom of the seat body 11, and the arc concave portion 111 is used for being rotatably attached to the bumper body 30. Specifically, the cambered surface concave part 111 is attached to the outer pipe wall of the lower protective pipe, so that the protective bar body 30 can be guided, limited and supported by the cambered surface concave part 111 in the overturning and opening process, and the rotation is guaranteed to be more stable.

As described in the above-mentioned embodiments, the fixing member 40 is used to lock and fix the bumper body 30 when it is installed, and when maintenance of the components under the cab is required, the seat body 11 is released and the fixing member 40 can be flipped open together with the bumper body 30. The fixing member 40 is switched between two operation states of locking and releasing by moving relative to the bumper body 30.

Referring to fig. 1 and fig. 3, specifically, on the basis of any of the above embodiments, the fixing member 40 is provided with a long slot hole 41 extending vertically, the bumper body 30 is provided with a mounting hole opposite to the long slot hole 41, the second connecting member 50 is inserted into the long slot hole 41 and the mounting hole and can lock or release the fixing member 40 and the bumper body 30, and when the second connecting member 50 releases the fixing member 40 and the bumper body 30, the fixing member 40 can move up and down relative to the bumper body 30; the fixing member 40 is further provided with a bayonet 42, and the bayonet 42 can be inserted into or separated from the seat body 11.

In this embodiment, the second connector 50 includes a screw and a nut. When the bumper body 30 is mounted and fixed, the screw passes through the long slot hole 41 and the mounting hole and is screwed and fixed with the nut, and at this time, the screw is abutted and positioned with the upper end hole wall of the long slot hole 41, so that the fixing piece 40 and the bumper body 30 can be locked and fixed. Meanwhile, the fixing piece 40 is located at the lowest position, so that the bayonet 42 can be clamped on the plate edge extending out of the seat body 11, the seat body 11 is clamped and fixed, the connection reliability of the fixing piece 40 and the seat body 11 is guaranteed, and the guard bar body 30 is prevented from being opened accidentally due to the fact that the fixing piece 40 and the seat body 11 are separated accidentally.

And when the fender bar body 30 need follow the driver's cabin upset and open, only need unscrew the screw and loosen the mounting 40 to upwards promote the mounting 40, make seat body 11 deviate from in bayonet 42, seat body 11 separates completely with mounting 40 promptly, and fender bar body 30 obtains freely and can follow the driver's cabin and overturn.

In conclusion, the front protective bar is assembled and matched with the connecting assembly for use, so that the aim of conveniently maintaining and protecting the turnover cab can be fulfilled under the condition that the front protective bar is not detached. And the connecting component has strong capacity of being suitable for the size, the appearance and the like of the front bumper, and can meet the requirement of the same flowers in the market.

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.

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.