JPH0725480Y2 - Shifting device for management machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a gear shift operation device capable of performing a plurality of gear shift operations by a gear shift lever laterally of a mission case.

[Prior Art] Conventionally, in a management machine configured to project a plurality of shift fork shafts each having an engaging portion at a tip end thereof in parallel to a side portion of a mission case so as to perform a plurality of shift operations. For example, as seen in Japanese Utility Model Laid-Open No. 60-163178, the structure is such that a gear shift lever is vertically rotated about a fulcrum shaft parallel to the shift fork shaft to perform a gear shift operation. .

[Problems to be solved by the invention] In this type of management machine, the gear shift lever is usually arranged laterally to the side of the mission case, which is near the steering wheel. However, with the conventional structure in which the gear shift lever is rotated in the vertical direction, it is difficult to operate the gear shift lever smoothly without touching the handle, and the operation may be erroneous. It had a problem that it was bad.

[Means for Solving the Problems] The present invention solves such a problem and enables the shift lever to be operated with good operability. Therefore, the transmission case above each shift fork shaft is A support frame that can reciprocate in the front-rear direction orthogonal to the shift fork shaft is installed laterally, and a vertical boss that is fixed to the support frame has a fulcrum shaft that is erected above the center of the operation plate. A shifter that fits freely, is installed vertically below one end of the operation plate and can engage with each engaging portion, and a shift lever extending in the longitudinal direction of the operation plate is fixed above the other end. It is constructed and constructed.

[Operation] Therefore, if the gear shift lever is not moved up and down as in the conventional case, but is moved back and forth while being simply pushed and pulled, and is rotated laterally about the vertical fulcrum shaft, the handlebars in the vicinity are moved. Since it can be operated with good operability in a state of being separated from the side, it is possible to smoothly perform a plurality of gear shift operations with a light operating force.

Example Next, an example shown in the drawings will be described.

Figure 2 shows a side view of the management machine, with wheels (10) on both sides of the lower part.
The engine (11) is mounted in front of the mission case (3) in which each of them is mounted, and the engine (11) can be transmitted to the mission case (3) via the belt pulley in the transmission cover (12). Installed, this machine (A)
The rotary working machine (B) is connected to the rear side of the vehicle, and the U-shaped engaging portions (1a) and (2a) are provided at the tip portions on the lateral side of the upper portion of the mission case (3). Two shift fork shafts (1) and (2) that can perform continuous and reverse gear shifting operations
Are installed in parallel with each other, and the chrysanthemum seat (14) provided on the upper surface of the handle mount (13) above the mission case (3) is provided below the handle frame (16) on the base side of both handles (15). The chrysanthemum seat (17) is engaged and the tightening lever (1
The handle (15) is installed in the same way as the conventional structure by loosening the engagement by 8) and transferring the handle (15) in the longitudinal direction of the machine.

A guide plate (19) is mounted on the lateral side of the handle mounting base (13) above the shift fork shafts (1) and (2), and a space is provided inside the guide plate (19). Both brackets (20a) (20b) are erected and the support frame (4) formed by framing both support rods (4a) (4b) and both stopper pieces (4c) (4d) is attached to both support rods. (4a) and (4b) are fitted in the holes (21) of both brackets (20a) and (20b) and are installed so as to be able to reciprocate in the front-rear direction orthogonal to the shift fork shafts (1) and (2). A vertical boss body (5) is fixed between the support rods (4a) and (4b) close to the stopper piece (4c), and an H-shaped groove ( 22) is formed and configured.

A long operation plate (6) parallel to the lower side of the support frame (4)
A fulcrum shaft (7) standing upright from the center of the boss is fitted to the boss body (5) so as to be rotatable only, and the engaging portion (1a) ( A pin-shaped shifter (8) that can be engaged with 2a) is vertically installed, and a supporting rod (23) standing upright on the other end side of the operation plate (6) is fitted into the H-shaped groove (22). The base boss (9a) of the speed change lever (9), which extends upward along the longitudinal direction of the operation plate (6), is fitted and fixed to the upper end of the support rod (23). It is configured by changing the fitting of the base boss (9a) so that the speed change lever (9) can be transferred in the front-rear direction.

Therefore, as shown in FIG. 5, the stopper piece (4c)
Shift lever (9) until the abutment on the bracket (20a)
Is pulled in the front-back direction, the shifter (8) engages with the engaging portion (1a), and from that state, as shown in FIG. 6, the gear shift lever (9) is moved to the center of the fulcrum shaft (7). By rotating the shift fork shaft (1) laterally, the shift fork shaft (1) can be operated.

Further, as shown in FIG. 8, when the shift lever (9) is pushed forward and backward until the stopper piece (4d) hits the bracket (20b), the shifter (8) engages with the engaging portion (2a). From that state, as shown in FIG. 9, when the speed change lever (9) is laterally rotated around the fulcrum shaft (7), the shift fork shaft (2) can be operated for speed change. Become.

That is, both the shift fork shafts (1) and (2) can be selectively operated by moving the shift lever (9) back and forth while simply pushing and pulling and rotating laterally.
Further, even if the handle (15) is changed in the front-rear direction and the shift lever (9) is changed in the same direction, the shift operation can be performed in the same manner as described above.

[Effects of the Invention] As described above, according to the present invention, the gear shift lever (9) is moved back and forth by simply pushing and pulling it without rotating it up and down as in the conventional case, and the fulcrum shaft (7) is centered. By simply turning it laterally, it is possible to perform gear shifting operations with good operability without touching the nearby handle, and moreover, it is possible to smoothly perform multiple gear shifting operations with a light operating force. It has a feature that it can be suitably implemented with a simple structure.

[Brief description of drawings]

FIG. 1 is a side view of a main part which is an embodiment of the present invention, FIG. 2 is a side view of a management machine, FIG. 3 is a plan view of a part of FIG.
The figure is a top view of a part of FIG. 3, FIG. 5 shows a part of FIG. 1, FIG. 6 is a plan view of a part of FIG. 5, and FIG. 7 is an exploded perspective view of FIG. , FIG. 8 and FIG. 9 show operation explanatory views of FIG. 5 and FIG. 6, respectively. (1a) (2a) ... Engaging part (1) (2) ... Shift fork shaft (3) ... Mission case (4) ... Support frame, (5) ... Boss (6) ... Operation plate, (7) ... Fulcrum shaft (8) ... shifter, (9) ... shift lever

Claims (1)

[Scope of utility model registration request] 1. A plurality of shift fork shafts (1) and (2) each having an engaging portion (1a) (2a) at a tip end thereof are provided in a projecting manner in parallel with a side portion of a mission case (3). In a management machine configured to be capable of performing gear shift operation, the shift fork shaft (1) is provided laterally laterally of the mission case (3) above each shift fork shaft (1) (2).
A support frame (4) that can reciprocate in the front-rear direction orthogonal to (2) is installed, and a vertical boss (5) fixed to the support frame (4) stands above the center of the operation plate (6). The fulcrum shaft (7) provided is rotatably fitted, and a shifter (8) which can be engaged with the respective engaging portions (1a) (2a) is vertically provided below one end side of the operation plate (6). A gear shift lever (9) extending in the longitudinal direction of the operating plate (6) is fixedly provided above the other end side of the gear shift operating device.