JPH04123724U - Gear shift operation structure - Google Patents

Abstract

(57) [Summary] [Purpose] To simplify the structure of a linkage mechanism that holds a continuously variable transmission in a neutral position when operating a parking brake. [Structure] An operating rod 29 for speed change operation is formed into an L-shape, and a bent protrusion 29a of the operating rod 29 is formed in an engagement groove 31 formed in a parking lock member 24 that holds the brake pedal 12 in the brake operating position. A contact regulating portion 32 is formed on the parking lock member 24, and is configured to engage and maintain the neutral position, and regulates a shift operation to the reverse side by contacting the bent protrusion 29a. do.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention connects a swinging operating arm to the gear shift operating tool so that it can rotate freely, and this swinging operating arm is Operate the shift arm and the shift arm in the neutral return biased state in the continuously variable transmission. An engagement that is linked via a rod and operates in conjunction with the brake pedal. of the brake pedal, and a parking lock member that acts on the engaging portion. When the parking lock member is operated to the parking position in the depressed state, the brake is activated. The key pedal is held in the depressed position, and the swing operation arm is in the neutral position. This invention relates to a speed change operation structure that is provided with a linkage mechanism that works to maintain the speed.

0002

[Conventional technology]

In the above-mentioned speed change operation structure, conventionally, for example, As disclosed in The operating arm is rotatably connected as a unit, and this swing operating arm and gear shift operating arm are connected together. is interlocked and connected via a rod, while the swing operation arm is connected to the rotation operation shaft. Separately, a movable member with a protruding pin that can be rotated as a unit is connected to create a parking brake during neutral gear shifting. In the rake operating state, the pin engages the locking groove formed in the parking lock member. The structure is configured so that the shift pedal is locked to check the shift operation, and the gear shift pedal is locked to the reverse side of the gear shift pedal. The parking lock member has a contact portion that restricts the operation within a predetermined range by contact with the pin. There was a structure that formed in

0003

[Problem that the idea aims to solve]

However, in the above conventional structure, the linkage mechanism for gear change operation of the continuously variable transmission is Separately, a movable member that is a dedicated contact regulation member is required, which increases the number of parts and costs. The drawback was that strikes were high. The present invention aims to solve the above-mentioned problems.

0004

[Means to solve the problem] The characteristic configuration of the present invention is that in the speed change operation structure described at the beginning, the operation rod The operating rod is bent into an L-shape at the connection point between the operating rod and the swing operating arm. The swing operation arm is shaped so that it protrudes laterally and outwardly, and when the gear is in the neutral state and the front When the parking lock member is operated to the parking position, this parking lock member The protruding portion of the operating rod engages with the engagement groove formed in the oscillating operating arm. the interlocking mechanism is configured to hold the parking arm in a neutral position; A gear shift operating tool is disposed near the engagement groove when the parking lock member is in a disengaged state. A contact that restricts the stepping operation toward the reverse side to a predetermined amount by contact with the protrusion. The point is that it forms a regulating section.

[0005]

[Effect]

The L-shaped protrusion of the operating rod, which is necessary for operating the continuously variable transmission, By engaging with the engagement groove formed in the vehicle locking member, the gear can be held in the neutral position. and the abutment regulating portion formed near the engagement groove in the parking lock member. By abutting and engaging the L-shaped protrusion of the operating rod, the gear shift operating tool moves toward the reverse side. The operation is regulated to a predetermined amount.

[0006]

[Effect of the idea]

Therefore, the control lock for gear shift operation is located relatively close to the vehicle for maneuvering. By improving the parking door and parking lock member to a more rational structure, there is no need for a dedicated regulating member. The key point is to have a simple structure that fixes the operation at the neutral position and controls the speed when going backwards. It became more doable.

[0007]

【Example】

Examples will be described below based on the drawings. Figure 6 shows a riding type lawn mower. This lawnmower is mounted on the front of the riding type vehicle. The mower 2 is connected via a link mechanism 1, and the traveling body has a control panel at the front. 3, a driving unit 4 is arranged at the rear, and a pair of left and right front wheels 5 of a non-steering type are provided. , 5 and a pair of left and right steering type rear wheels 6, 6.

[0008] The steering section 3 is provided with a steering handle 8 on the top of the handle post 7. In step 9 of the operating section on the lower side, there is a hydrostatic continuously variable transmission installed in the traveling transmission system. A speed change operation pedal 11 [an example of a speed change operation tool], a brake pedal 12, etc. of the device 10 is provided. In addition, a mower 2 is provided on the rear side of the pivot shaft 13 of the brake pedal 12. A rotation operation shaft 15 for a lift arm 14 for driving up and down is provided. And the driving department Step 9 is a rotation operation of the rotation support shaft 13 of the brake pedal 12 and the lift arm 14. The structure is such that it is supported by a working shaft 15. In other words, as shown in FIG. The shafts 13 and 15 are connected to a pair of left and right fuselage frames 16 extending along the longitudinal direction of the fuselage. A bush is rotatably supported on the shaft and externally fitted onto each shaft 13, 15 so as to be relatively rotatable. The racket 17 is configured to mount and support the driver step 9. Furthermore, this The insertion hole of the rotation support shaft 13 of the bracket 17 is slightly larger than the diameter of the rotation support shaft 13. It is designed to allow easy braking operation.

[0009] Furthermore, as shown in FIG. 5, inside the handle post 7 there is a regulator 18 and a Electrical equipment such as a combination box 19 is provided. In other words, the left and right fuselage A steering gear mechanism 21 is mounted on the upper part of a support plate 20 that spans the frames 16, 16. A handle post 22 is erected through the The handle post cover 23 covers the handle post cover 23. So After the handle post cover 23 is fixed to the handle post 22, The front cover 23a is divided into a removable front cover 23b. By removing the cover 23b, maintenance work on the electrical equipment described above is facilitated. It is configured so that it can be done.

0010 In the vicinity of the brake pedal 12, there is a state in which the pedal 12 is depressed, that is, a state in which the pedal 12 is depressed. A parking lock member 24 is provided which locks when the brake is activated. Figure 1, Figure 2 As shown in FIG. In both cases, the engaging member 25 is engaged with the parking lock member 24 and is urged back. A locking portion 26 for locking the brake pedal 12 is formed. On the other hand, A swing operation arm 27 is integrally and rotatably connected to the rotation support shaft 13 of the speed operation pedal 11. , a shift in the neutral return state in this swing operating arm 27 and the continuously variable transmission 10 The gear operating arm 28 is interlocked with the operating arm 28 via an operating rod 29, and the shift operating pedal 11 By stepping forward and backward from the neutral position, you can steplessly shift the aircraft forward and backward. It is configured so that it can be used.

[0011] Then, when the parking lock member 24 is locked in the neutral gear position, , a linkage mechanism 30 is provided for holding the swing operating arm 27 in a neutral position. Two Therefore, as shown in FIG. 3, there is a Then, the operating rod 29 is bent into an L-shape so that it extends outward from the side of the swing operating arm 27. This protrusion 29a is inserted into the engagement groove 31 formed in the parking lock member 24. It is configured to engage and hold the swing operating arm 27 in a neutral position. Also, stationed The operating rod 29 is attached to the upper edge of the vehicle locking member 24 near the engaging groove 31. Contact regulation in which the protruding portion 29a comes into contact and limits the amount of depression operation toward the reverse side to a predetermined amount. A portion 32 is formed. In this way, the operating arm 28 of the continuously variable transmission 10 is directly driven. Since the lock is fixed in the neutral position by the pad 29, the fixation is ensured. This eliminates the need for special positional adjustment due to looseness between each member.

0012 In addition, symbols are written in the scope of claims for utility model registration to facilitate comparison with the drawings. However, the present invention is not limited to the configuration shown in the attached drawings.

[Brief explanation of drawings]

[Figure 1] Side view of the neutral holding linkage mechanism

[Figure 2] Side view of neutral holding linkage mechanism

[Figure 3] Front view of the neutral holding linkage mechanism

[Figure 4] Side view of the driver step support part

[Figure 5] Notch side part of handle post part

[Figure 6] Overall side view of lawn mower

[Explanation of symbols]

10 Continuously variable transmission 11 Gear shift operation tool 24 Parking lock member 25 Engagement part 27 Swing operation arm 28 Shift operating arm 29 Operation rod 29a Projection 30 Linkage mechanism 31 Engagement groove 32 Contact regulation part

Claims (1)

[Scope of utility model registration request] Claim 1: A swing operating arm (27) is integrally and rotatably connected to the speed change operating tool (11), and the swing operating arm (27) and the continuously variable transmission (10) are biased to return to neutral. The gear shift actuation arm (28) and the operating rod (2
9), and includes an engaging part (25) that operates in conjunction with the brake pedal (12), and a parking lock member (24) that acts on the engaging part (25), When the parking lock member (24) is operated to the parking position while the brake pedal (12) is depressed, the brake pedal (12) is held in the depressed position and the swing operation arm (27) is The speed change operation structure is provided with a linkage mechanism (30) that is linked so as to be held at a neutral position, and the operating rod (29) is connected to the swing operating arm (27) at a connection point between the operating rod (29) and the swing operating arm (27). 29) is bent into an L-shape so as to protrude outward from the side of the swing operating arm (27), the gear is in the neutral state, and the parking lock member (24) is operated to the parking position. , this parking lock member (2
The operating rod (2) is inserted into the engagement groove (31) formed in the operating rod (2).
The linkage mechanism (30) is configured such that the protrusion (29a) of the parking lock member (24) engages with the protrusion (29a) to hold the swing operating arm (27) in the neutral position. The parking lock member (2) is located near the engagement groove (31).
A contact regulating portion (32) is formed that regulates the stepping operation of the gear shift operating tool (11) to the reverse side in the disengaged state of 4) to a predetermined amount by contacting with the protruding portion (29a). A certain speed change operation structure.