JP2010120451A - Front-rear interlocking brake device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a front-rear interlocking brake device for a vehicle, which includes a resilient member for energizing an equalizer to the loosening side of a front wheel brake cable, and a rear wheel brake lock mechanism for holding a rear wheel brake cable in a traction operation state, and accurately maintains a non-braking state on a front wheel side in a rear wheel brake lock state by the rear wheel brake lock mechanism to reduce the number of components. <P>SOLUTION: A receiving member 48 which receives one end of the resilient member 42 with a resilient force for energizing a lever 44 to a lock releasing position side and energizing the equalizer 23 to the loosening side of the front wheel brake cable 21 is housed in a casing 30. The receiving member 48 is interlocked and coupled to the lever 44 such that the resilient force of the resilient member 42 when the lever 44 is at the lock position is larger than the resilient force of the resilient member 42 when the lever 44 is at the lock releasing position. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention includes an interlocking brake operator; a front wheel brake cable that transmits a brake operation force to the front wheel brake side; a rear wheel brake cable that transmits a brake operation force to the rear wheel brake side; An equalizer that is accommodated in the casing so as to distribute and transmit the operation force of the child to the front wheel brake cable and the rear wheel brake cable; and a bullet that urges the equalizer to the side on which the front wheel brake cable is loosened A lever that can be rotated between the locking position and the unlocking position as a part of the component, and the lever is rotated to the locking position after the operation of the interlocking brake operator; A rear wheel brake that makes it possible to hold the rear wheel brake cable in a towing operation state when the interlocking brake operator is not operated. Kirokku mechanism; wherein the lever is directed to the interlock brake system before and after a vehicle that is rotatably supported to the casing in the locked position side while being resiliently urging.

  The operating force of the interlocking brake operator is transmitted to the front wheel brake cable and the rear wheel brake cable via an equalizer. During parking, the rear wheel brake cable is pulled when the interlocking brake operator is not operated. Patent Document 1 discloses a front-rear interlocking brake device for a motorcycle in which the state is maintained by a rear wheel brake lock mechanism.

In addition, when the rear wheel brake and the front wheel brake are operated in an interlocked manner by the brake operation of the interlocking brake operator, a resilient member is provided on one end of the equalizer in order to operate the front wheel brake behind the operation of the rear wheel brake. Patent Document 2 discloses a front-rear interlocking brake device for a motorcycle that allows the spring force to be applied.
JP-A-10-167152 JP 2000-309294 A

  By the way, the front / rear interlocking brake device is configured to include both the rear wheel brake lock mechanism as disclosed in Patent Document 1 and the elastic member as disclosed in Patent Document 2, so that the front / rear interlocking brake is configured. Although the merchantability of the apparatus can be improved, it is conceivable that the number of parts increases and it is necessary to secure an arrangement space. Further, there is a demand for reliably maintaining the non-braking state on the front wheel side in the locked state of the rear wheel brake lock mechanism in which the rear wheel brake cable is held in the traction operation state.

  The present invention has been made in view of such circumstances, and is provided with both a rear wheel brake lock mechanism and a resilient member, while reducing the number of parts, and the rear wheel brake lock state by the rear wheel brake lock mechanism. An object of the present invention is to provide a vehicle front-rear interlocking brake device that reliably maintains a non-braking state on the front wheel side.

  In order to achieve the above object, an invention according to claim 1 is directed to an interlocking brake operator; a front wheel brake cable for transmitting a brake operating force to the front wheel brake side; and a brake operating force to the rear wheel brake side. A rear wheel brake cable; an equalizer housed in a casing so as to distribute and transmit the operating force of the interlocking brake operator to the front wheel brake cable and the rear wheel brake cable; and the front wheel brake A resilient member for urging the equalizer to the cable loosening side; and a lever capable of rotating between a lock position and a lock release position as a part of the component, and operating the lever for the interlocking brake operation The rear wheel brake cable is pulled while the interlocking brake operator is not operated by rotating to the lock position after the child is operated. A rear-wheel brake lock mechanism that can be held in a state, and the lever is rotatably supported on the casing while being elastically biased toward the lock position. A receiving member for receiving one end portion of the resilient member that exerts a resilient force to urge the lever toward the unlocking position side and urge the equalizer toward the loosening side of the front wheel brake cable in the casing And the receiving member is interlocked with the lever so that the elastic force of the elastic member at the locking position of the lever is larger than the elastic force of the elastic member at the unlocking position. Are connected.

  According to a second aspect of the invention, in addition to the configuration of the first aspect of the invention, a resilient member receiving portion for receiving the other end portion of the resilient member is provided integrally with the equalizer.

  According to a third aspect of the invention, in addition to the configuration of the first or second aspect of the invention, the receiving member is supported by the casing so as to be rotatable about an axis coaxial with the rotation axis of the lever. It is characterized by.

  Furthermore, the invention according to claim 4 is an insertion hole provided in the casing at a position deviated from the rotation axis of the lever, in addition to the configuration of the invention according to any one of claims 1 to 3. A connecting pin penetrating from the outside is planted, and the connecting pin is fitted and connected to the receiving member.

  The interlocking brake lever 12 of the embodiment corresponds to the interlocking brake operator of the present invention, and the second front wheel brake cable 21 of the embodiment corresponds to the front wheel brake cable of the present invention. The coil spring 42 corresponds to the elastic member of the present invention, and the screw member 47 of the embodiment corresponds to the support shaft of the present invention.

  According to the first aspect of the present invention, when the rear wheel brake lock mechanism is in a locked state in which the rear wheel brake cable is held in the traction operation state, the receiving member that receives one end of the elastic member is the rear wheel. The rear wheel brake locks because it rotates in conjunction with the lever that forms part of the brake lock mechanism, and the larger elastic force of the elastic member acts on the equalizer toward the side where the brake cable for the front wheel is loosened. The non-braking state on the front wheel side can be reliably maintained in the rear wheel brake lock state by the mechanism. In addition, since the elastic member urges the lever toward the unlock position, the elastic force that activates the front wheel brake behind the operation of the rear wheel brake and the elastic force that urges the lever toward the unlock position. Force can be obtained with a single elastic member, which can contribute to a reduction in the number of parts.

  According to the second aspect of the present invention, since the resilient member receiving portion for receiving the other end portion of the resilient member is provided integrally with the equalizer, the number of parts can be reduced.

  According to the third aspect of the present invention, since the lever and the receiving member can be rotated around the coaxial axis, the support structure of the lever and the receiving member to the casing is simplified.

  Further, according to the invention described in claim 4, the receiving member in the casing is linked and connected to the lever outside the casing with a simple structure in which the connecting pin implanted in the lever is simply fitted to the receiving member. Can do.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  1 to 8 show an embodiment of the present invention. FIG. 1 is an overall configuration diagram of a front and rear interlocking brake device for a motorcycle. FIG. 2 is a side view of the front portion of the motorcycle as viewed from the left side. 3 is a cross-sectional view of the casing as viewed from the direction indicated by the arrow 3 in FIG. 2, FIG. 4 is a view taken from the direction of the arrow 4-4 in FIG. 3 with the cover plate of the casing omitted, and FIG. 5 is a sectional view corresponding to FIG. 4 in a state where the interlocking brake lever is operated, FIG. 7 is a sectional view taken along the line 7-7 in FIG. 4, and FIG. 8 is a rear wheel brake locking mechanism. FIG. 5 is a diagram corresponding to FIG. 4 when in a locked state.

  Referring first to FIG. 1, the front-rear interlocking brake device for a motorcycle includes a front wheel brake lever 11 that operates a front wheel brake BF according to a brake operation, a rear wheel brake BR that operates according to a brake operation, and the front wheel brake BF. And an interlocking brake lever 12 as an interlocking brake operator for operating the engine in an interlocking manner.

  A first front wheel brake cable 20 is connected to the front wheel brake lever 11. Further, the operating force of the interlocking brake lever 12 is distributed to the second front wheel brake cable 21 and the rear wheel brake cable 22 via the equalizer 23, and the first front wheel brake cable 20 and the second front wheel are connected. The brake cable 21 is connected to the front wheel brake BF so that the brake operation force can be transmitted independently of each other.

  The front wheel brake BF is a drum brake that exhibits a braking force in response to an operation input that is input to the brake cam arm 17. The first front wheel brake cable 20 and the second front wheel brake cable 21 include a brake cam arm. 17 connected in parallel. The rear wheel brake BR is a drum brake that exerts a braking force in response to an operation input input to the brake cam arm 17 when the rear wheel brake cable 22 is pulled.

  In FIG. 2, a gripping portion 25 that a driver grips with the left hand is provided at the left end of the steering handlebar 24 provided at the front portion of the vehicle body in the motorcycle. A holder 26 is provided on the directional handle bar 24. A base end portion of the interlocking brake lever 12 is rotatably supported on the holder 26 via a support shaft 27 that is a screw member, and the interlocking brake lever 12 is held by the left hand that grips the gripping portion 25. The brake can be operated.

  By the way, the middle part in the longitudinal direction of the steering handle bar 24 is covered with a handle cover 28 in which front and rear cover halves 28a and 28b formed of synthetic resin are connected to each other. From the opening 29 provided on the left side of the cover 28, the gripping portion 25 at the left end of the steering handlebar 24 and the interlocking brake lever 12 protrude outward.

  An equalizer 23 (see FIG. 1) is operable at a position in front of the steering handlebar 24 at a position adjacent to the inner side of the interlocking brake lever 12 along the longitudinal direction of the steering handlebar 24. The accommodated casing 30 is fixedly arranged. The casing 30 includes a box-shaped case portion 31 that is provided integrally with the holder 26 and is open to the front side, and a cover plate 32 that is coupled to the case portion 31 so as to cover the open end of the case portion 31. Composed.

  3 and 4, the case portion 31 of the casing 30 has a first side wall 31a on the interlocking brake lever 12 side and a second side wall 31b facing the first side wall 31a. One end of the lever 12 is fastened to the base end of the lever 12 by the screw member 33, and the connecting rod 34 connected to the interlocking brake lever 12 is movably penetrated through the first side wall 31a and inserted into the casing 30. Thus, a boot 35 is provided between the first side wall 31 a of the casing 30 and the intermediate portion of the connecting rod 34 in the casing 30, and dust enters the casing 30 from the insertion portion of the connecting rod 34. This is prevented by the boot 35.

  Referring also to FIG. 5, the equalizer 23 has side edges on the first side wall 31 a side of a pair of flat plate portions 23 a and 23 b that extend in a direction perpendicular to the longitudinal direction of the connecting rod 34 and are parallel to each other. The other end portion of the connecting rod 34 is connected between the connecting portions 23c and 23d with a pair of connecting portions 23c and 23d arranged at intervals. Is connected to the middle portion in the longitudinal direction. That is, on the other end side of the connecting rod 34, a thin-walled portion 34a that is flattened so as to be inserted between the flat plate portions 23a and 23b of the equalizer 23 is formed, and between the flat plate portions 23a and 23b. The inserted thin portion 34a is connected to an intermediate portion of the equalizer 23 along the longitudinal direction of both flat plate portions 23a and 23b via a connecting pin 36. Thus, in order to operably store the equalizer 23 that is long in the vertical direction, the casing 30 is formed in a vertically long shape having a length in the vertical direction larger than a length in the longitudinal direction of the motorcycle.

  Further, in the case portion 31 of the casing 30, the outer cables 21a and 22a of the second front wheel brake cable 21 and the rear wheel brake cable 22 are spaced apart from each other in the vertical direction of the second side wall 31b facing the first side wall 31a. Are fixed in parallel. That is, the outer cable 21a is fixed to the second side wall 31b of the case portion 31 at one end of the second front wheel brake cable 21 in which the inner cable 21b is movably inserted into the outer cable 21a. A locking piece 37 provided at the end of the inner cable 21 b that protrudes and is inserted into the casing 30 is engaged with and connected to one end of the equalizer 23. Further, at one end portion of the rear wheel brake cable 22 in which the inner cable 22b is movably inserted into the outer cable 22a, the outer cable 22a is connected to the second side wall 31b of the case portion 31 and the second front wheel brake cable 21. A locking piece 38 fixed in parallel and provided at the end of the inner cable 22b protruding from the outer cable 22a is connected to the other end of the equalizer 23.

  By the way, the brake operating force by the interlocking brake lever 12 acts on the equalizer 23 via the connecting rod 34, and is distributed from the equalizer 23 to the second front wheel brake cable 21 and the rear wheel brake cable 22. In order to make the brake operating forces distributed from the equalizer 23 to the brake cables 21 and 22 different from each other, the second front wheel is moved at a position where the distance from the connecting position of the connecting rod 34 to the equalizer 23 is different from each other. A brake cable 21 for a vehicle and a brake cable 22 for a rear wheel are connected to an equalizer 23. That is, in this embodiment, the distance between the connecting point of the connecting rod 34 to the equalizer 23 and the connecting point of the second front wheel brake cable 21 to the equalizer 23 is L1, and the connecting rod 34 is connected to the equalizer 23. When the distance between the point and the connecting point of the rear wheel brake cable 22 to the equalizer 23 is L2, L1> L2.

  Here, the force input from the interlocking brake lever 12 to the equalizer 23 via the connecting rod 34 is F, the traction force acting on the second front wheel brake cable 21 from the equalizer 23 is F1, and the equalizer 23 is used for the rear wheel. When the traction force acting on the brake cable 22 is F2, both traction forces F1 and F2 are expressed by the following equations (1) and (2).

F1 = F · {L2 / (L1 + L2)} (1) F2 = F · {L1 / (L1 + L2)} (2)
In the above formulas (1) and (2), since L1> L2, F2> F1, and the brake operating force acting on the rear wheel brake cable 22 from the equalizer 23 is for the second front wheel. The brake operating force acting on the brake cable 21 is greater.

  An initial abutment surface 40 facing the equalizer 23 is provided on the second side wall 31b of the casing 30. The equalizer 23 includes a connecting portion of the connecting rod 34 to the equalizer 23 and the second front wheel brake cable 21. Contact plate portions 23e and 23f bent up and down from one flat plate portion 23a at positions substantially corresponding to the connecting portion to the equalizer 23 are provided so as to be able to contact the initial contact surface 40. .

  The equalizer 23 is in a position where the contact plate portions 23e and 23f are in contact with the initial contact surface 40 of the casing 30 when the interlocking brake lever 12 is not operated. In response to the operation, as shown in FIG. 6, the contact plate portions 23 e and 23 f are operated so as to be separated from the initial contact surface 40.

  The casing 30 is provided with a stop switch 41 so that the detector 41a faces the initial contact surface 40. The stop switch 41 is applied to the equalizer 23 when the interlocking brake lever 12 is not operated. The state in which the detector 41a is pushed in by the contact plate portion 23f while the contact plate portion 23f is in contact with the initial contact surface 40, and the operation of the equalizer 23 according to the operation of the interlocking brake lever 12 are described above. The non-operating state and the operating state of the interlocking brake lever 12 are detected when the pressing force to the detector 41a is released when the contact plate portion 23f is separated from the initial contact surface 40.

  In addition, a resilient member that biases the equalizer 23 toward the side where the second front wheel brake cable 21 is loosened is provided at an end of the equalizer 23 on the side to which the second front wheel brake cable 21 is connected, that is, one end of the equalizer 23. The spring force of the coil spring 42 is applied. Further, the rear-wheel brake cable 22 is held in the traction operation state by the rear-wheel brake lock mechanism 43 in a non-operation state after operating the interlocking brake lever 12.

  Referring also to FIG. 7, the rear wheel brake lock mechanism 43 is disposed outside the casing 30 so as to be rotatable around an axis perpendicular to the plane including the rotation axis of the interlocking brake lever 12. A lever 44 rotatably supported on the casing 30 and an engagement pin implanted in the lever 44 so as to be engaged with a locking recess 45 provided on the outer periphery of the base of the interlocking brake lever 12. 46, and the lever 44 is in a locked position (position shown in FIG. 8) for holding the rear wheel brake cable 22 in a non-operated state after operation, and releases the locked state. It is rotatably supported on the casing 30 so as to rotate between the unlocking position (the position shown in FIGS. 4 and 6).

  A base portion of the lever 44 is rotatably supported by the casing 30 via a screw member 47 that is a support shaft, and the screw member 47 is a boss portion 31c provided integrally with the case portion 31 of the casing 30. Screwed onto. The screw member 47 has an enlarged head portion provided at one end of the shaft portion 47a so that the base portion of the lever 44 is sandwiched between the shaft portion 47a penetrating the base portion of the lever 44 and the cover plate 32 of the casing 30. 47b and a screw shaft portion 47c that is inserted through the cover plate 32 and screwed into the boss portion 31c, and the screw shaft portion 47c is formed to have a smaller diameter than the shaft portion 47a. An annular step portion 47d that abuts the cover plate 32 is formed between the shaft portion 47a and the other end of the shaft portion 47a.

  Thus, the lever 44 is rotatably supported on the casing 30 so as to rotate about the axis of the screw member 47, and the lever 44 is brought into the locked position while the interlocking lever 12 is rotated. When the operating force that has been rotated and applied to the interlocking lever 12 is released, the engaging pin 46 of the lever 44 is shown in the engaging recess 45 of the interlocking lever 12 as shown in FIG. Since the interlocking lever 12 does not return any further, the rear wheel brake cable 22 is held in the traction operation state.

  In the casing 30, a receiving member 48 that is pivotally supported by the boss portion 31 c so as to be rotatable about an axis coaxial with the lever 44 receives one end of the coil spring 42. The receiving member 48 is configured such that the elastic force of the coil spring 42 at the lock position of the lever 44 is larger than the elastic force of the coil spring 42 at the lock release position. Thus, the lever 44 is interlocked and connected.

  The lever 44 is implanted with a connecting pin 49 parallel to the axis of the screw member 47 and the boss 31c at a position deviated from the rotation axis of the lever 44, that is, a position deviated from the axis of the screw member 47. The connecting pin 49 has an insertion hole 50 formed in an arc shape around the rotation axis of the lever 44, that is, the axis of the screw member 47 and the boss portion 31 c and provided in the cover plate 32 of the casing 30. It penetrates from the outside and enters the casing 30, and is fitted and connected to fitting holes 51 and 52 provided in the receiving member 48.

  The receiving member 48 is provided with a protrusion 48a that is fitted to one end of the coil spring 42 so as to receive one end of the coil spring 42, and is provided at one end of the equalizer 23 at one end thereof. A resilient member receiving portion 53 that is integrally connected to the connecting portion 23c is integrally provided. Thus, the coil spring 42 is contracted between one end of the equalizer 23 and the receiving member 48, and the receiving member 48 rotates together with the lever 44, so that the lever 44 is locked by the spring force of the coil spring 42. It is biased toward the release position side.

  Next, the operation of this embodiment will be described. The lever 44 constituting a part of the rear wheel brake lock mechanism 43 pulls the rear wheel brake cable 22 in a non-operated state after the operation of the interlocking brake lever 12. The second front-wheel brake cable 21 is loosened so as to be pivotally supported on the casing 30 so as to rotate between a locked position for maintaining the locked state and an unlocked position for releasing the locked state. The receiving member 48 that receives one end of the coil spring 42 that urges the equalizer 23 is configured so that the elastic force of the coil spring 42 when the lever 44 is locked is the elastic force of the coil spring 42 when the lever 44 is unlocked. It is interlocked and connected to the lever 44 so as to be larger than that.

  Therefore, when the rear wheel brake lock mechanism 43 is in a locked state in which the rear wheel brake cable 22 is held in the traction operation state, the receiving member 48 that receives one end of the coil spring 42 is one of the rear wheel brake lock mechanism 43. The elastic force of the coil spring 42 is increased and acts on the equalizer 23 toward the side where the second front wheel brake cable 21 is loosened. The non-braking state on the front wheel side can be reliably maintained in the rear wheel brake lock state by the wheel brake lock mechanism 43.

  In addition, since the coil spring 42 biases the lever 44 toward the unlock position, the coil spring 42 applies the resilience to activate the front wheel brake BF behind the operation of the rear wheel brake BR and the lever 44 toward the unlock position. It is possible to obtain an elastic force to be exerted by one coil spring 42, which can contribute to a reduction in the number of parts.

  Moreover, since the elastic member receiving part 53 which receives the other end part of the coil spring 42 is integrally provided in the equalizer 23, the number of parts can be reduced.

  The receiving member 48 is pivotally supported by the boss 31c of the casing 30 so as to be rotatable about an axis coaxial with the rotation axis of the lever 44, and the lever 44 and the receiving member 48 are connected to the casing 30. Support structure becomes simple.

  Further, a connecting pin 49 that penetrates the insertion hole 50 provided in the casing 33 from the outside is implanted in the lever 44 at a position deviated from the rotation axis of the lever 44, and the connecting pin 49 is fitted to the receiving member 48. The connecting member 49 in the casing 30 is linked and connected to the lever 44 outside the casing 30 with a simple structure in which the connecting pin 49 implanted in the lever 44 is simply fitted into the receiving member 48. can do.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. Is possible.

  For example, the rear wheel brake cable 22 is connected to the equalizer 23 at a position far from the connection point of the interlocking brake lever 12 to the equalizer 23, and the second front wheel brake cable 21 is connected to the equalizer 23 at a position near the connection point. In this way, it is possible to make the brake operation force toward the second front wheel brake cable 21 side larger than the brake operation force toward the rear wheel brake cable 22 side.

  The present invention can also be applied to vehicles other than motorcycles.

1 is an overall configuration diagram of a front-rear interlocking brake device for a motorcycle. It is the side view which looked at the front part of a motorcycle from the left side. It is sectional drawing which cut the casing longitudinally seeing from the 3 arrow direction of FIG. It is the figure which abbreviate | omitted the cover board of the casing and was seen from the 4-4 line arrow direction of FIG. FIG. 5 is a sectional view taken along line 5-5 of FIG. It is a figure corresponding to Drawing 4 in the state where the brake lever for interlocking was operated. FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 4. FIG. 5 is a view corresponding to FIG. 4 when the rear wheel brake lock mechanism is in a locked state.

Explanation of symbols

12 ... Interlocking brake lever 21 ... Front wheel brake cable 22 ... Rear wheel brake cable 23 ... Equalizer 42 ... Coil spring 43 as a resilient member ..Rear wheel brake lock mechanism 44 ... Lever 47 ... Screw member 48 as a support shaft ... Receiving member 49 ... Connecting pin 50 ... Insertion hole 53 ... Bounce member receiving portion BF ... Front wheel brake BR ... Rear wheel brake

Claims (4)

  Interlocking brake operator (12); front wheel brake cable (21) for transmitting brake operating force to the front wheel brake (BF) side; rear wheel brake for transmitting brake operating force to the rear wheel brake (BR) side A casing (30) configured to distribute and transmit the operating force of the interlocking brake operating element (12) to the front wheel brake cable (21) and the rear wheel brake cable (22); An equalizer (23) housed in the front wheel; a resilient member (42) for urging the equalizer (23) toward the loosening side of the brake cable (21) for the front wheel; and rotation between the locked position and the unlocked position And the lever (44) is rotated to the locked position after the operation of the interlocking brake operation element (12). A rear wheel brake lock mechanism (43) that enables the rear wheel brake cable (22) to be held in a traction operation state when the interlocking brake operator (12) is not operated. In the vehicle front-rear interlocking brake device in which the lever (44) is supported by the casing (30) while being elastically biased toward the lock position, the lever (44) is unlocked in the casing (30). A receiving member (48) that receives one end of the resilient member (42) that exerts a resilient force that urges the equalizer (23) to the side that loosens the front wheel brake cable (21) while urging the front wheel brake cable (21). ) Is received, and the elastic force of the elastic member (42) when the lever (44) is locked is the elastic force of the elastic member (42) when the lever (44) is locked. Departure In conjunction with the lever (44) so as to be larger than, interlocking brake system before and after a vehicle characterized in that it is connected.   The vehicle front / rear interlocking brake device according to claim 1, wherein a resilient member receiving portion (53) for receiving the other end portion of the resilient member (42) is provided integrally with the equalizer (23).   The vehicle according to claim 1 or 2, wherein the receiving member (48) is supported by the casing (30) so as to be rotatable about an axis coaxial with the rotation axis of the lever (44). Front / rear interlocking brake device.   A connecting pin (49) penetrating from the outside through an insertion hole (50) provided in the casing (30) is implanted in the lever (44) at a position deviated from the rotation axis of the lever (44), The vehicle front-rear interlocking brake device according to any one of claims 1 to 3, wherein the connecting pin (49) is fitted and connected to the receiving member (48).

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