JPH0211481A - Transfer handle for hand tractor - Google Patents

Abstract

PURPOSE:To improve rigidity and to reduce the weight of a transferring handle by a method wherein the side parts on both sides of a transferring handle are intercoupled through a support plate having an engaging hole for a longitudinal transfer shaft, the support axle part of a gear shift lever, and a pair of reinforcing plates on both sides to which an engaging plate for varying the height of a control handle is coupled. CONSTITUTION:When a hand frame 3 is transferred longitudinally, a lock arm 37 is disengaged from a rack 23 by means of a transfer lock lever 35 and is rotated in a 180 deg. arc around a longitudinal transfer shaft 5. In which case, the lock arm 37 is engaged with a rack 22 through the force of a spring 39 to fix a transfer position. In this case, the side parts on both sides of the hand frame 3 are intercoupled through a support plate 7 and a pair of reinforcing plates 12 on both sides. A transfer hole 6 engaged with the transfer shaft 5 is formed in the support plate 7. A support axle part 9 of a gear shift lever 8 is supported to each of the reinforcing plates 12, and the reinforcing plates 12 are intercoupled through a lock plate 11 locking a control handle in a manner to vary the height of the control handle.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a transfer handle for a hand tractor.

The conventional technology and the problem to be solved by the invention The control handle of a hand tractor requires rigidity because it protrudes long toward the rear and upper part of the vehicle body such as the transmission case.
When the steering wheel is configured to be moved back and forth with respect to the vehicle body, the steering wheel alone requires strong rigidity, which tends to increase the weight. The present invention provides a relatively thin and lightweight steering handle construction.

Means for Solving the Problems The present invention provides a handle frame (3) having a rectangular cross-section or an opening-shaped cross-section with an open lower side, having an upper surface portion +11 and both left and right side portions (2). The body of this handle frame (3) (
A support plate (7) is formed with a transfer hole (6) that fits around the longitudinal transfer shaft (5) relative to 4), and supports the transfer rotationally.
), a locking plate (a pair of left and right reinforcing plates (!δ and The transfer handle of the hand tractor is constructed by connecting the two.

Functions and Effects of the Title Invention Work operation is performed by grasping the operation handle (11) at the tip of the handle frame (3).
3) to the upper longitudinal swing axis (5) relative to the fuselage (4).
) to move forward or backward.

At this time, the gear shift lever (8) is also shifted integrally with the handle frame (3). In addition, when changing the height of the operating handle (11), the height of the operating handle (11) can be adjusted to the operating posture by rotating it vertically relative to the handle frame (3) and locking it to the locking plate (1υ). can.

In this way, the handle frame (3), which can swing forward and backward with respect to the aircraft body (4), has this rotating part attached to the forward and backward swing axis (5).
A support plate (7) formed with a transfer hole (6) that fits around it, and a locking plate (1υ,
Since the pair of left and right reinforcing plates (+2+) having the support shaft (9) of the gear shift lever (8), etc. are integrally connected, the rigidity of the entire handle frame (3) is increased. (3), and the support of the handle frame (3) to the body (4) can be stabilized, and the handle frame (3) itself can be made of a thin and thick material to reduce its weight.

Embodiment In addition, when rotating the hand tractor, the transmission device f1
The fuselage is mainly composed of a transmission case 04 which houses a transmission case 041, a traveling axle flG is provided on both left and right sides of the axle (19) at the lower end of the transmission case 041, and an engine frame (19) is provided on the front side of the transmission case (14). An engine f11 is mounted on the rear side, and a working device such as a tilling device 120 is connected to a hitch (lcfl) on the rear side, and the transmission device (13) is a gauge wheel.

At the upper end of the transmission case (+4), there are racks (2
A rack board C4 formed with X5 (2) is provided, and a large-diameter longitudinal switching shaft (5) is formed in the upper part of this rack board 241, and a handle frame is attached to the outer periphery of this longitudinal switching shaft (5). (3) Fit the transfer hole (6) of the support plate (7) on the side, and attach the push plate (two pieces with Pol 8Q) from the upper side and guide the transfer rotation freely.This rack board 124 ] is provided with an auxiliary transmission shifter shaft (5) and a main transmission shifter cylinder ffl, and the main transmission shifter cylinder I2e is fitted on the outside of the auxiliary transmission shifter shaft (Jun) so as to be slidable up and down. The lower end portion is connected to the main transmission shifter or the auxiliary transmission shifter to perform the transmission operation of the transmission device (131).

The handle frame (3) is a cylindrical body with a rectangular cross section, and the lower surface of the front end is open so that the rack board 24 and the shifter shaft (
5) etc. can be fitted onto the top of the device. This front end portion of the handle frame (3) integrally connects the left and right side portions (2) with a support plate (7). In addition, in the middle part of the handle frame (3), there is a locking plate (lυ) and a sub-shift that supports the shifter boss 0υ of the interlocking mechanism (to) which is interlocked by the sub-shift lever (to) of the support shaft (9). With the support shaft (support)
A pair of left and right reinforcing plates 02+ that are physically connected are fixed to the inside of both side surfaces (2). Also, main gear shift lever 03
The shifter boss (to) is rotatably fitted and supported on the transfer shaft (to) of the transfer lock lever 09 among the support shafts (9), and the lock boss (to) having the lock arm (b) is integrated. The spring (to) springs the lock arm in the direction of constantly locking it to the rack ψδ□□□ side of the rack board (to).

Note that the lower surface portion of the handle frame (3) may be open over the entire length.

In addition, a reinforcing plate (G) is integrally provided on the inner side surface of the left and right periphery of the rear part of the handle frame (3), so that the operation handle (IIll
A locking arm 142) integrated with the handle shaft 6υ is protruded toward the front locking plate (lυ side), and a clip pin (43 at the tip is engaged). The height of the operating handle +1 (I) relative to the handle frame (3) is adjusted by engaging with the locking hole (2) of the stop plate (11).

A guide plate (g) is provided at the rear end of the handle frame (3) to guide the shift position of the main shift lever 03. f4
e is a check lever that prevents the main shift lever 03 from being operated to the reverse high speed shift position.
It is composed of a restraining arm (T) that slides in contact with the cam (G) of No. 4, a shaft (G), a rondo ω, etc.

When moving the handle frame (3) back and forth.

At the transfer lock lever, remove the lock arm (B) from the rack and place the zo 180 around the longitudinal transfer shaft (5).
When the transfer lock lever OQ is released by rotating the transfer lock lever OQ, the lock arm is engaged with the rack (2X5) by the spring (to) to fix the transfer position.

When the main gear shift lever 03 is operated to change gears, the shifter boss is rotated around the swing shaft Oe, and the main gear shifter cylinder (211
The main gear shift is performed by operating the . Sub-shift lever C! When a gear shift operation is performed, the shifter boss 0υ is rotated around the sub-shift support shaft, and the sub-shift shifter shaft (5) is operated to perform the sub-shift.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a side sectional view, Fig. 2 is a plan sectional view, Fig. 3 is a partial plan view, and Fig. 4 is a partially cutaway side view. be. In the figure, symbol m indicates a top surface, (2) a side view, (3) a handle frame, (4) a fuselage body, and (5) a front-back rotation axis. (6) is the transfer hole, (7) is the support plate, (8) is the gear shift lever, (9) is the support shaft, (1 [ is the operation handle, (1υ is the locking plate, 0shi is the reinforcement plate) .

Claims (1)

[Claims] In a handle frame (3) having a rectangular cross-section with an upper surface part (1) and both left and right side parts (2), or a square cross-section with an open lower side, the space between the left and right side parts (2) of the front end part is , a support plate (7) that forms a deflection hole (6) that fits around the forward and backward deflection shaft (5) of the handle frame (3) with respect to the body (4), and supports the handle frame (3) so as to be rotatable; , a pair of left and right reinforcing plates (12) connected by a locking plate (11) that receives the support shaft (9) of the speed change lever (8) and locks the operating handle (10) so that the height thereof can be changed; A transfer handle for a hand tractor that is connected with