Motorcycle folding mudguard and mudguard structure

Abstract

The utility model discloses a motorcycle folding mudguard and a mudguard structure, a mudguard body and a plurality of supporting rods form a structure similar to a folding fan, and an elastic piece acts on the supporting rods located at the two ends of the mudguard body in the circumferential direction. When the driving mechanism does not act, the supporting rod at the movable end and the supporting rod at the fixed end are kept close to or away from each other through elastic force, the fender body is kept in a folded or unfolded state, on the contrary, the driving mechanism is connected with the supporting rod at one end, the elastic force can be overcome to drive the supporting rod at the movable end to rotate, and therefore the state of the fender body is switched. The folding mudguard of the motorcycle can be folded and unfolded, the state of the mudguard can be conveniently and timely adjusted according to a sudden change scene in the advancing process, the problems that an existing mudguard is inconvenient to use and poor in practicability can be effectively solved, and the requirements of the motorcycle for the practicability and the appearance of the mudguard are also considered to a certain extent.

Description

Technical Field

[0001] The utility model belongs to the technical field of wheel fenders, and in particular relates to a folding fender for a motorcycle and a fender structure. Background Art

[0002] When a motorcycle is traveling in the rain or on muddy roads, the rotating wheels easily stir up rain and mud, especially the rear wheel that provides driving force. In order to prevent rain and mud from splashing, mudguards need to be installed above the wheels, but mudguards will have a certain impact on the appearance of the vehicle. Therefore, some motorcycle models (such as cruisers) choose to use shorter mudguards or abandon mudguards. Although this can better meet the styling requirements, it will limit the use scenarios of the motorcycle.

[0003] In response to the problem that traditional mudguards cannot take into account both practicality and appearance requirements, Chinese patent CN2644272Y (September 29, 2004) discloses a motorcycle mud and water guard, which consists of a foldable fan blade and a connecting piece. The connecting piece is fixedly installed on the main shaft of the motorcycle wheel. The foldable fan blade is fan-shaped, and the hinged end of the foldable fan blade is threadedly connected to the connecting piece. When it rains or on a muddy road, first unscrew the screws, unfold the foldable fan blade, move the hinged end of the foldable fan blade to the upper right end of the fixed slot, match it with the original mudguard on the motorcycle wheel, tighten the screws to fix it, and the water and mud splashed from the tire can be blocked. When it is not raining and the road surface is dry, the screws can be unscrewed, the hinged end of the foldable fan blade is moved to the lower end of the fixed socket, the foldable fan blade is folded and the screws are tightened to improve the overall appearance of the vehicle. Although the fender can be flexibly adjusted according to the driving scene and meets the practicality of the motorcycle to a certain extent, the state adjustment of the fender requires manually moving the hinged end. Not only is it difficult to adjust the state of the fender in time according to sudden changes in the scene during driving, but the hinged end for adjustment operation is located low and easily covered by dirt, resulting in the fender failing to meet the practicality and appearance requirements of current motorcycle users in the market. Summary of the Invention

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a folding fender and fender structure for motorcycles, so as to solve the technical problems of the existing fenders being inconvenient to use and having poor practicality, and to achieve the effect of taking into account both practicality and vehicle appearance.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A folding fender for a motorcycle comprises a drive mechanism, an arcuate fender body, and U-shaped support rods. The support rods are multiple and distributed circumferentially along the fender body. A support rod segment forming the bottom of the U is connected to the fender body. The support rod segments forming both sides of the U are symmetrically distributed on both sides of the fender body and extend radially along the fender body. All the support rod ends on the same side are rotatably connected by a rotating shaft arranged axially along the fender body. The fender body is made of a flexible material and has a movable end and a fixed end at its circumferential ends, respectively. An elastic member is connected between the support rod at the movable end and the support rod at the fixed end. The output end of the drive mechanism is connected to the support rod at the movable end. When in use, the drive mechanism and the support rod at the fixed end are installed on the motorcycle.

[0007] The elastic force of the elastic member is used to drive the support rod at the movable end to rotate away from the support rod at the fixed end, so that the fender body remains unfolded. The driving mechanism is used to overcome the elastic force of the elastic member to drive the support rod at the movable end to rotate close to the support rod at the fixed end, so that the fender body remains folded.

[0008] Furthermore, an elastic force acting portion is extended from the end of the support rod at the movable end, and the elastic member is a tension spring connected between the elastic force acting portion and the support rod at the fixed end. When the fender body is folded, the tension spring is in a stretched state, and the contraction of the tension spring causes the fender body to unfold.

[0009] Furthermore, the driving mechanism includes a take-up drum and a cable with one end fixed to the take-up drum, and the other end of the cable is connected to the support rod of the movable end. When in use, the take-up drum is installed on the side of the fixed end of the fender body away from the movable end, and the take-up drum can drive the support rod of the movable end to rotate close to the support rod of the fixed end by rotating and retracting the cable.

[0010] Furthermore, all the support rod sections on one side of the fender body are respectively provided with guide holes, and the guide holes are arranged along the circumference of the fender body, and the distance between each guide hole and the rotating shaft is the same; in the direction from the fixed end to the movable end of the fender body, the other end of the cable moves through each guide hole in turn and connects to the stop head, and the stop head abuts against the support rod at the movable end, so that the retraction of the cable can drive the support rod at the movable end to rotate.

[0011] Furthermore, the guide hole is provided on the support rod section close to the fender body.

[0012] Furthermore, the driving mechanism also includes a shell, in which a meshing worm wheel and a worm are provided, the worm is connected to the motor output shaft in the shell for synchronous rotation, the take-up reel is located in the shell and is connected to the worm wheel for synchronous rotation, and the other end of the cable is movable through the shell and connected to the support rod at the movable end.

[0013] The utility model also includes a folding mudguard structure for a motorcycle, comprising a frame, wheels and the folding mudguard for the motorcycle as described above, wherein the fixed end of the mudguard body, the support rod of the fixed end, the drive mechanism and the two rotating shafts are respectively mounted and fixed on the frame, and the mudguard body is located directly above the wheel and covers the wheel below.

[0014] Furthermore, the wheel is a rear wheel, the frame includes a rear flat fork, and the fixed end of the fender body, the support rod of the fixed end and the two rotating shafts are respectively installed and fixed on the rear flat fork.

[0015] Furthermore, the rotating shaft is coaxial with the rear wheel axle.

[0016] Furthermore, the rear flat fork includes a mounting section extending forward and obliquely upward, a connecting seat is provided on the mounting section, and the fixed end of the fender body and the support rod of the fixed end are fixed to the mounting section through the connecting seat.

[0017] Optionally, the aforementioned motorcycle folding fender can also be a motorcycle folding fender in which the elastic force of the elastic member is used to drive the support rod at the movable end to rotate close to the support rod at the fixed end, so that the fender body remains folded, and the driving mechanism is used to overcome the elastic force of the elastic member to drive the support rod at the movable end to rotate away from the support rod at the fixed end, so that the fender body is unfolded, and the motorcycle folding fender is adapted to be installed on the frame.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the foldable fender for motorcycles described in the present invention, the fender body and a plurality of support rods form a structure similar to a folding fan. Elastic members act on the support rods located at both circumferential ends of the fender body to keep the fender body in an unfolded state. Conversely, a driving mechanism connected to the support rods at the movable ends can overcome the elastic force and drive the support rods to rotate, thereby switching the fender body to a folded state. The foldable fender for motorcycles can not only be folded and unfolded, but also facilitates timely adjustment of the fender state according to sudden changes in the scene during travel, effectively solving the problems of inconvenience in use and poor practicality of existing fenders, and to a certain extent, also takes into account the practicality and appearance requirements of motorcycles for fenders.

[0020] 2. In the folding fender for motorcycles described in the present invention, the driving mechanism adopts an electrically driven cable, which is not only flexible to install and has less impact on the appearance of the motorcycle, but also facilitates the need to adjust the fender status in time according to sudden changes in the scene during driving.

[0021] 3. In the folding fender for motorcycles of the present invention, the guide hole not only serves as an installation limit for the cable, making the arrangement of the cable on the motorcycle more aesthetically pleasing and avoiding interference with other components, but also serves as a guide for the cable, allowing the other end of the cable to move along the circumferential direction of the fender body so as to pull the support rod at the movable end to rotate closer to the support rod at the fixed end. This also makes the installation position of the housing no longer limited to the side of the fixed end away from the movable end, making the arrangement of the drive mechanism more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A front view of the folding fender for a motorcycle according to an embodiment;

[0023] Figure 2 A perspective view of a foldable fender for a motorcycle according to an embodiment;

[0024] Figure 3 A three-dimensional diagram of the support rod at the movable end of the embodiment;

[0025] Figure 4 This is a three-dimensional diagram of the driving structure described in the embodiment without the housing and the cable;

[0026] Figure 5 This is a front view of the foldable mudguard structure for a motorcycle according to an embodiment;

[0027] Figure 6 A perspective view of the rear fork according to the embodiment;

[0028] Among them, there are a driving mechanism 1, a fender body 2, a support rod 3, a rotating shaft 4, a movable end 5, a fixed end 6, a tension spring 7, an elastic force acting part 8, a cable 9, a motor 10, a take-up reel 11, a worm gear 12, a worm 13, a guide hole 14, a stopper 15, a frame 16, a rear wheel 17, a rear fork 18, a mounting section 19, a connecting seat 20, and a connecting rod 21. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0030] Example:

[0031] See Figure 1 and Figure 2The folding fender of a motorcycle comprises a driving mechanism 1, an arc-shaped fender body 2 and a U-shaped support rod 3. The support rod 3 has multiple sections and is distributed circumferentially along the fender body 2 to form a support rod section at the bottom of the U-shape and is connected to the fender body 2 to form the support rod sections on both sides of the U-shape. The support rod sections on both sides of the U-shape are symmetrically distributed on both sides of the fender body 2 and extend radially along the fender body 2. The ends of all the support rods on the same side are rotatably connected by a rotating shaft 4 arranged axially along the fender body 2. The fender body 2 is made of flexible material and has a movable end 5 and a fixed end 6 at both ends in the circumferential direction. An elastic member is connected between the support rod 3 located at the outermost side and close to the movable end 5 and the support rod 3 located at the outermost side and close to the fixed end 6 in the circumferential direction of the fender body 2. The elastic member is used to keep the support rod 3 of the movable end 5 and the support rod 3 of the fixed end 6 in a tendency to rotate away from or approach each other. The output end of the driving mechanism 1 is connected to the support rod 3 of the movable end 5. The driving mechanism 1 is used to drive the support rod 3 of the movable end 5 to rotate. When in use, the driving mechanism 1 and the support rod 3 of the fixed end 6 are installed on the motorcycle.

[0032] During implementation, the elastic force of the elastic member is used to drive the support rod 3 of the movable end 5 to rotate away from the support rod 3 of the fixed end 6, so that the fender body 2 remains unfolded, and the driving mechanism 1 is used to overcome the elastic force of the elastic member to drive the support rod 3 of the movable end 5 to rotate close to the fixed end 6, so that the fender body 2 is folded; or the elastic force of the elastic member is used to drive the support rod 3 of the movable end 5 to rotate close to the fixed end 6, so that the fender body 2 remains folded, and the driving mechanism 1 is used to overcome the elastic force of the elastic member to drive the support rod 3 of the movable end 5 to rotate away from the fixed end 6, so that the fender body 2 is unfolded; the fender body 2 is made of a flexible material such as polyurethane, silicone rubber, polymethyl methacrylate and high-density polyethylene; the driving mechanism 1 can adopt an electric push rod, a manually driven cable, an electrically driven cable or a driving motor coaxially arranged with the rotating shaft 4 and transmission connected to the support rod 3 of the movable end 5, and the control end used to control the driving mechanism 1 can be installed in a position convenient for operation during driving.

[0033] The motorcycle folding fender described in the utility model is that when in use, the driving mechanism 1 and the support rod 3 of the fixed end 6 are installed on the motorcycle, and the elastic member is connected between the support rod 3 of the movable end 5 and the support rod 3 of the fixed end 6. When the driving mechanism 1 is not in action, the elastic force causes the support rod 3 of the movable end 5 and the support rod 3 of the fixed end 6 to maintain a tendency to move closer or farther away, so that the fender body 2 remains in a folded or unfolded state; the output end of the driving mechanism 1 is connected to the support rod 3 of the movable end 5. When the demand for the state of the fender body 2 changes, the driving mechanism 1 can overcome the elastic force of the elastic member and drive the support rod 3 of the movable end 5 to rotate away from or closer to the support rod 3 of the fixed end 6, thereby causing the fender to be unfolded or folded.

[0034] The foldable fender for motorcycle described in the present invention comprises a fender body 2 and a plurality of support rods 3 forming a structure similar to a folding fan, wherein elastic members act on the support rods 3 located at both circumferential ends of the fender body 2 to keep the fender body 2 in a folded or unfolded state, and conversely, a driving mechanism 1 connected to the support rod 3 at one end can overcome the elastic force to drive the support rod 3 to rotate, thereby switching the state of the fender body 2; the foldable fender for motorcycle described in the present invention can not only be folded and unfolded, but also facilitate timely adjustment of the fender state according to suddenly changing scenes during travel, which can effectively solve the problems of inconvenience in use and poor practicality of existing fenders, and to a certain extent also takes into account the practicality and appearance requirements of motorcycles for fenders.

[0035] In this embodiment, the elastic force of the elastic member is used to drive the support rod 3 at the movable end 5 to rotate away from the support rod 3 at the fixed end 6, so that the fender body 2 remains unfolded. The driving mechanism 1 is used to overcome the elastic force of the elastic member to drive the support rod 3 at the movable end 5 to rotate toward the support rod 3 at the fixed end 6, so that the fender body 2 is folded.

[0036] See Figure 2 and Figure 3 , the elastic member adopts a tension spring 7, and the specific connection form is as follows: the end of the support rod 3 of the movable end 5 is extended to form an elastic action part 8, and in the circumferential direction of the fender body 2, the elastic action part 8 is located on the side of the support rod 3 of the fixed end 6 close to the fixed end 6 (the side away from the movable end 5), and the elastic member is connected between the elastic action part 8 and the support rod 3 of the fixed end 6. The elastic member is in a stretched state when the fender body 2 is unfolded; in this way, the elastic action part 8 maintains the tendency to rotate the support rod 3 close to the fixed end 6 under the tension of the tension spring 7. On the contrary, the movable end The support rod 3 at the end 5 maintains a tendency to rotate away from the support rod 3 at the fixed end 6, so that the fender body 2 remains in the expanded state when the driving structure is not in action and is not subjected to external force; it can be understood that during implementation, the end of the support rod 3 at the fixed end 6 can also be extended to form an elastic action part 8, and in the circumferential direction of the fender body 2, the elastic action part 8 is located on the side of the support rod 3 at the movable end 5 away from the fixed end 6, and the elastic member is connected between the elastic action part 8 and the support rod 3 at the movable end 5, and the elastic member is in a stretched state when the fender body 2 is expanded.

[0037] See Figure 2 and Figure 4, the driving mechanism 1 adopts an electric-driven cable 9, and its specific structure is as follows: the driving mechanism 1 includes a shell and a cable 9, a motor 10, a take-up drum 11 and a meshing worm gear 12 and a worm 13 are arranged in the shell, the output shaft of the motor 10 is connected to the worm 13 for synchronous rotation, the take-up drum 11 is connected to the worm gear 12 for synchronous rotation, one end of the cable 9 is fixedly connected to the take-up drum 11, and the other end is movable through the shell and connected to the support rod 3 of the movable end 5. When in use, the shell is installed on the motorcycle and is located on the side of the fixed end 6 away from the movable end 5, and the take-up drum 11 can drive the support rod 3 of the movable end 5 to rotate close to the support rod 3 of the fixed end 6 by rotating and retracting the cable 9; in this way, compared with the above-mentioned electric push rod and Driving motor, the electrically driven cable 9 is not only more flexible to install, but also has less impact on the appearance of the motorcycle. Compared with the manually driven cable 9, it is only necessary to place its corresponding control end in a position that is convenient for operation during driving. It is not only simpler to use but also more flexible in layout. In addition, the worm gear 12 and the worm 13 cooperate to have a certain self-locking effect, which is beneficial for the driving mechanism 1 to keep the fender body 2 in a folded state; when the fender body 2 is to be unfolded, the control motor 10 drives the take-up drum 11 to reverse and release the cable 9 through the worm gear 12 and the worm 13, so that the support rod 3 of the movable end 5 rotates away from the fixed end 6 under the tension of the tension spring 7 after losing the traction of the cable 9, thereby causing the fender body 2 to unfold again.

[0038] See Figure 1 and Figure 3 In order to further improve the flexibility of the arrangement of the driving mechanism 1, guide holes 14 are respectively provided on all the support rod sections on one side of the fender body 2. The guide holes 14 are arranged along the circumference of the fender body 2, and the distance between each guide hole 14 and the rotating shaft 4 is the same; in the direction from the fixed end 6 to the movable end 5, the other end of the cable 9 is movable through each guide hole 14 in sequence and connected to the stopper 15, which abuts against the support rod 3 of the movable end 5 so that the retraction of the cable 9 can drive the support rod 3 of the movable end 5 to rotate; in this way, the guide holes 14 not only play an installation limit role for the cable 9, making the arrangement of the cable 9 on the motorcycle more beautiful and avoiding interference with other components, but also play a guiding role for the cable 9, so that the other end of the cable 9 moves along the circumference of the fender body 2, so as to pull the support rod 3 of the movable end 5 to rotate closer to the support rod 3 of the fixed end 6, but also make the installation position of the housing no longer limited to the side of the fixed end 6 away from the movable end 5, making the arrangement of the driving mechanism 1 more flexible.

[0039] See Figure 1 and Figure 3 In this way, the position of the cable 9 acting on the movable end 5 of the support rod 3 is farther away from the rotating shaft 4 and the lever arm is longer, which is more conducive to the driving structure driving the movable end 5 of the support rod 3 to rotate.

[0040] See Figure 5 The foldable motorcycle fender of the present invention is installed on a motorcycle to obtain a foldable motorcycle fender structure. Specifically, the fixed end 6, the support rod 3 of the fixed end 6, the drive mechanism 1 and the two rotating shafts 4 are respectively installed and fixed on the frame 16 of the motorcycle. The fender body 2 is located directly above the wheel and covers the wheel below.

[0041] See Figure 5 In this embodiment, the wheel is the rear wheel 17, the frame 16 includes a rear fork 18, the fixed end 6, the support rod 3 of the fixed end 6 and the two rotating shafts 4 are respectively installed and fixed on the rear fork 18; in this way, the fender body 2 can float up and down with the rear wheel 17 to provide a more reliable mud-blocking effect when deployed; the rotating shaft 4 is coaxial with the axis of the rear wheel 17; this not only facilitates installation and positioning, but also helps to improve the overall appearance of the motorcycle.

[0042] See Figure 5 and Figure 6 The rear fork 18 includes a mounting section 19 extending forward and obliquely upward, and a connecting seat 20 is provided on the mounting section 19. In this embodiment, the support rod 3 of the fixed end 6 is fixedly connected to a connecting rod 21 on the side away from the movable end 5. The connecting rod 21 is also U-shaped, and the connection with the fender body 2 is the same as the support rod 3. The difference is that the connecting rod sections on both sides of the U-shape do not extend to the rotating shaft 4 to improve the appearance and avoid interference between the support rod and the rear fork 18. The support rod 3 of the fixed end 6 is connected to the connecting seat 20 through the connecting rod 21, and the fixed end 6 and the connecting rod 21 of the fender body 2 are respectively connected to the connecting seat 20 to fix the motorcycle folding fender on the mounting section 19.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the technical solution. Ordinary technicians in this field should understand that those modifications or equivalent replacements of the technical solution of the present invention that do not depart from the purpose and scope of the technical solution of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A folding fender for a motorcycle, characterized by: The invention comprises a driving mechanism, an arc-shaped fender body and a U-shaped support rod. The support rods are multiple and distributed along the circumference of the fender body. The support rod segment forming the bottom of the U is connected to the fender body. The support rod segments forming both sides of the U are symmetrically distributed on both sides of the fender body and extend radially along the fender body. The ends of all the support rods on the same side are rotatably connected by a rotating shaft arranged along the axial direction of the fender body. The fender body is made of flexible material and has a movable end and a fixed end at its circumferential ends respectively. An elastic member is connected between the support rod at the movable end and the support rod at the fixed end. The driving mechanism is operatively connected to the support rod at the movable end. The elastic force of the elastic member is used to drive the support rod at the movable end to rotate away from the support rod at the fixed end, so that the fender body remains unfolded, and the driving mechanism is used to drive the support rod at the movable end to rotate closer to the support rod at the fixed end, so that the fender body is folded; Or the elastic force of the elastic member is used to drive the support rod at the movable end to rotate close to the support rod at the fixed end, so that the fender body remains folded, and the driving mechanism is used to drive the support rod at the movable end to rotate away from the support rod at the fixed end, so that the fender body is unfolded.

2. The foldable motorcycle fender according to claim 1, characterized in that: The elastic force of the elastic member is used to drive the support rod at the movable end to rotate away from the support rod at the fixed end, so that the fender body remains unfolded, and the driving mechanism is used to drive the support rod at the movable end to rotate closer to the support rod at the fixed end, so that the fender body is folded; The end of the support rod at the movable end is extended to form an elastic action part, and the elastic member is a tension spring connected between the elastic action part and the support rod at the fixed end. When the fender body is folded, the tension spring is in a stretched state, and the contraction of the tension spring causes the fender body to unfold.

3. The foldable motorcycle fender according to claim 1, characterized in that: The elastic force of the elastic member is used to drive the support rod at the movable end to rotate away from the support rod at the fixed end, so that the fender body remains unfolded. The driving mechanism is used to overcome the elastic force of the elastic member to drive the support rod at the movable end to rotate closer to the support rod at the fixed end, so that the fender body is folded. The driving mechanism includes a take-up drum and a cable with one end fixed to the take-up drum, and the other end of the cable is connected to the support rod of the movable end. When in use, the take-up drum is installed on the side of the fixed end away from the movable end, and the take-up drum can drive the support rod of the movable end to rotate closer to the support rod of the fixed end by rotating and retracting the cable.

4. The foldable motorcycle fender according to claim 3, characterized in that: Guide holes are respectively provided on all the support rod sections on one side of the fender body. The guide holes are arranged along the circumference of the fender body, and the distance between each guide hole and the rotating shaft is the same; in the direction from the fixed end to the movable end of the fender body, the other end of the cable moves through each guide hole in turn and connects to the stop head, and the stop head abuts against the support rod at the movable end so that the retraction of the cable can drive the support rod at the movable end to rotate.

5. The foldable motorcycle fender according to claim 4, characterized in that: The guide hole is arranged on the support rod section close to the fender body.

6. The foldable motorcycle fender according to claim 3, characterized in that: The driving mechanism also includes a shell, in which a meshing worm wheel and a worm are provided. The worm is connected to the motor output shaft in synchronous rotation in the shell. The take-up reel is located in the shell and is connected to the worm wheel in synchronous rotation. The other end of the cable is movable through the shell and connected to the support rod at the movable end.

7. A foldable mudguard structure for a motorcycle, characterized by: The invention comprises a frame, wheels and a folding fender for motorcycle as described in any one of claims 1 to 6, wherein the fixed end of the fender body, the support rod of the fixed end, the drive mechanism and the two rotating shafts are respectively mounted and fixed on the frame, and the fender body is located directly above the wheel and covers the wheel below.

8. The foldable motorcycle mudguard structure according to claim 7, characterized in that: The wheel is a rear wheel, the frame comprises a rear flat fork, and the fixed end of the fender body, a support rod of the fixed end and two rotating shafts are respectively installed and fixed on the rear flat fork.

9. The foldable motorcycle mudguard structure according to claim 8, characterized in that: The rotating shaft is coaxial with the rear wheel axle.

10. The foldable motorcycle mudguard structure according to claim 8, characterized in that: The rear flat fork comprises a mounting section extending forward and obliquely upward, a connecting seat is provided on the mounting section, and the fixed end of the fender body and the supporting rod of the fixed end are fixed on the mounting section through the connecting seat.

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