JPH07110608B2 - Portable wheel mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a main body that is grounded and supported, and a portable roller wheel is attached to the main body so as to be movable up and down while being urged downward. The present invention relates to a structure for mounting a portable roller wheel, wherein a lock member that locks at a support position protruding below a grounding portion of a main body is provided in the main body so as to be switchable between a lock operating position and a non-operating position.

[Conventional technology]

As a device having such a structure, a wheel storage device disclosed in, for example, Japanese Patent Application Laid-Open No. 57-26050 is conventionally known.

The wheel storage device disclosed in this publication is provided with a portable wheel that is vertically movable in the main body of the machine body and is urged downward by its own weight. The position where the wheel protrudes below the grounding portion of the main body. In this structure, a support body that is locked to the main body is pivotally attached to the main body so as to be swingable, and an ammunition is interposed between the support body and the main body to hold the support body in an inoperative position by lifting the support body upward.

Then, in order to lift the wheel upward to make it inactive, one end is locked to the support and the other end of the ammunition is locked to the stopper provided in the main body, and the supporting force is applied by the urging force of the ammunition. In order to raise the wheel and hold it in the non-working position and, on the other hand, to project the wheel downwards to the working state, remove the other end of the ammunition locked by the stopper from the stopper and The urging force is released so that the support body hangs downward by its own weight, and in this state, the support body keeps the wheel in an operating state.

[Problems to be Solved by the Invention]

Therefore, in this conventionally known device, it is necessary to engage the end portion of the ammunition with the stopper on the main body side when the wheel is in the non-operating state, and the wheel is in the operating state. In this case, it is necessary to remove the end of the ammunition from the stopper on the main body side, which makes the work of changing the posture of the wheel cumbersome.

Especially when the wheel is in a non-acting state, this ammunition is artificially deformed against the elastic force of the ammunition and its end is locked to the stopper, or artificially deformed. If you try to avoid the work, you have to lock the end of the ammunition to the stopper while lifting the main body upward, which requires complicated work in any case, and there is room for improvement in this point. It was

The present invention is for solving such a conventional problem, and an operator does not need to directly touch the mounting structure portion of the rolling wheel with a hand to perform a troublesome work. By simply lifting or lowering the wheel, it is possible to easily and quickly change the position of this wheel from a non-working state to a working state, and vice versa. It is the one we are trying to provide.

[Means for Solving the Problems]

A characteristic configuration of the present invention for achieving the above object is that a portable wheel is attached to the main body via a support member having an engaged portion and attached to the main body so as to be movable up and down. A lock member that locks the rolling wheel at a supporting position that projects downward has an engaging portion that engages with the engaged portion and locks the rolling wheel at the supporting position, and is interlocked with the movement of the supporting member. A holding mechanism that is movably provided between the lock operating position and the non-operating position and elastically holds the lock member in each of the lock operating position and the non-operating position is interlocked with the movement of the lock member. And the lock member is elastically held at the lock action position by the holding mechanism, the rolling wheels move downward from above the support position, Engagement of support member Engages with the engaging portion of the lock member to lock the rolling wheel at the supporting position, and when the locking member locks the rolling wheel at the supporting position, the rolling wheel descends from the supporting position. With the movement, the lock member is moved to the non-acting position in conjunction with the movement of the support member, and is elastically held at the non-acting position by the holding mechanism, and the lock member is held by the holding mechanism. While being elastically held in the non-acting position, the lock member is moved to the lock actuating position in conjunction with the movement of the supporting member as the rolling wheel moves upward from the supporting position. At the same time, it is configured to be elastically held at the lock action position by the holding mechanism.

[Work]

In this way, the lock member is attached to the main body so as to be able to move up and down through the support member having the engaged portion, and the lock member that engages with the engaged portion and locks the rolling wheel at the supporting position is the support member. A holding mechanism that is movably provided in a lock action position and a non-action position in association with the movement of the lock member and that elastically holds the lock member in each of the lock action position and the non-action position. When the lock member is elastically held at the lock action position by the holding mechanism, the roll wheel is moved downward from above the support position as the lock member is elastically held at the lock action position. Since the engaged portion of the support member engages with the engaging portion of the lock member to lock the rolling wheel at the supporting position, the rolling wheel in the non-acting state is changed to the working state. When doing, lift the body upwards at the end If so, the rolling wheel that is urged to descend naturally descends, and the engaged portion of the support member engages with the engaging portion of the lock member to lock the rolling wheel at the supporting position in the operating state. be able to.

Further, when the lock member locks the rolling wheel in the supporting position, the locking member moves to the non-acting position in conjunction with the movement of the supporting member as the rolling wheel moves downward from the supporting position. Since it is moved and is elastically held at the non-acting position by the holding mechanism, contrary to the previous case, when changing the rolling wheels in the working state to the non-working state, the main body is simply moved. As long as it is lifted upward, the rolling wheel that is urged to descend naturally descends, the support member moves to the non-acting position, the engagement between the engaged portion and the engaging portion is released, and the rolling wheel is moved. It can be switched to the inactive state.

Moreover, when the lock member is elastically held at the non-acting position by the holding mechanism, the lock member interlocks with the movement of the support member as the rolling wheel moves upward from the support position. Since it is moved to the lock action position by the holding mechanism and is elastically held in the lock action position by the holding mechanism, the main body is lifted to switch the rolling wheels to the inactive state, and then the lifted main body is lowered. Then, the lock member is elastically held in the lock operation position by the holding mechanism, and the rolling wheel can be switched to the operation state by lifting the main body again.

〔The invention's effect〕

As described above, according to the mounting structure of the portable roller according to the present invention, the main body is simply contacted without touching the mounting structure portion of the roller when switching the rolling wheel to the operating state or the non-operating state. Since it is only necessary to lift or lower the wheel, the posture of the wheel can be changed very easily and quickly.

〔Example〕

Hereinafter, the case where the embodiment of the present invention is carried out using a cow weighing device as an example will be described.

As shown in FIG. 5 and FIG. 6, a weighing device for measuring the weight of cows is installed in the middle of a walking passage where cows are accustomed to walk, for example, between a barn and a pasture. This weighing device comprises an inlet chute for cattle guidance (1), a weighing machine (2) corresponding to the main body, its controller (C), an outlet chute for cattle guidance (3), and the cattle is weighed (2). It is a system that can measure the static weight value of the cow while riding on the.

A specific structure for carrying the weighing device (2) which is the main body of the weighing device will be described. The structure on the right side is omitted because it has a symmetrical structure on the left and right.

Handles (13) for transportation are provided on the left and right of the vertical frame portions located on the inlet side and the outlet side of the shelf (5) of the weighing machine (2).
A) and (13B) are attached. These handles (13
A) and (13B) can be freely switched between a use position facing outward along the front-rear direction and a storage position facing inward along the front-rear direction by rotating about the longitudinal axis. It is designed to be used.

As shown in FIGS. 1 and 2, arms (1) are attached to the front and rear centers of the left and right main frames (14) of the weighing platform (2A), respectively.
5) is provided so as to be vertically swingable around the horizontal axis of the left and right, and the wheel (16) is pivotally supported on the tips of these arms (15). That is, the rolling wheel (16) is swingably provided on the weighing machine (2) as the main body through the arm (15) functioning as a support member. Further, a bracket (17) is fixed to the left and right main frames (14), and a lock member (18) is provided on the bracket (17) so as to be rotatable around the left and right horizontal axis. This locking member (18) is
6) It locks the weighing device (2), which is the main body, at a supporting position that projects below the grounding part, and is regulated so that it can rotate within a certain range between the lock operating position and the non-operating position. At the same time, the toggle mechanism (19) as a holding mechanism interposed between the lock member (18) and the bracket (17) elastically elastically moves the lock action position and the non-action position respectively. The posture is maintained.

Further, the lock member (18) is formed with an engagement groove (20) as an engagement portion and a taper (21). On the contrary,
A triangular plate (22) is fixed to the upper end of the base end of the arm (15), and a pin (23) engageable with the engaging groove (20) in the triangular plate (22) (an example of an engaged portion). ) Is attached.

Now, it is assumed that the lock member (18) is in the lock action position and the pin (23) is disengaged from the engagement groove (20). In this state, the weighing machine (2) is actually grounded. Since the arm (15) can freely swing upward, the wheel (16) does not receive the load of the scale (2) at all even though it comes into contact with the ground, and the load cell (4) does not weigh the load. Full load of vessel (2) is applied (1st
(State of figure).

Next, a method of operating the handle (13A) on the inlet side to convey the weighing device (2) will be described. In addition, although the operation is performed using the handle (13A) on the inlet side here, the handle (13B) on the outlet side can also be used for operation.

First, when gripping the handle (13a) on the inlet side and lifting the front side of the weighing machine (2) with the rear end as a fulcrum, the weight of the wheel (16) causes the arm (15) to swing downward, Rolling wheels (16)
Is lower than the ground plane (G) of the weighing machine (2) (virtual plane connecting the ground sections of the four load cells (4)). Accordingly, the taper (21) of the lock member (18) has a pin (2
3) contacts and rotates the lock member (18) clockwise in the figure against the elastic force of the toggle spring (19a) of the toggle mechanism (19). Eventually, the pin (23) engages with the engagement groove (20), and the lock member (18) is elastically held at this position. Since the arm (15) can swing downward, but the swinging upward is restricted, the rolling wheel (16) is restricted from moving upward and enters the locked state (Fig. 3 (a)). State). In other words, even if the handle (13A) on the inlet side is released,
6) will be able to support. Here, the position where the lock member (18) is held is the lock action position, and the position where the rolling wheel (16) is restricted is the support position.

After the wheel (16) is switched to the locked state, the handle (13A) on the inlet side is lowered to maintain the balance (2) in a posture as close to horizontal as possible, whereby the load of the balance (2) is increased. The part should be added to the two wheels (16) located in the center. This brings the scale (2) into a portable state, and as shown in Fig. 4, the scale (2) is pushed or pulled by pushing or pulling the handle (13A) on the inlet side or the handle (13B) on the outlet side. You can move in the desired direction.

To install the weighing machine (2) in a transportable state, lift the grip (13A) on the entrance side that was gripped, ground the front side, and then use the grounded part as a fulcrum to hold the grip (13A) on the entrance side. I will lift it further. Then, the weight of the rolling wheel (16) causes the arm (15) to swing downward, and when the rolling wheel (16) descends below the support position, the arm (15) is engaged with the engaging groove (20) accordingly. The pin (23) further rotates the lock member (18) clockwise in the figure against the elastic force of the toggle spring (19a). When the dead point of the toggle mechanism (19) is exceeded, the lock member (18) further rotates clockwise in the figure to release the engagement between the pin (23) and the engagement groove (20), and the limit position. Is elastically held in the lock non-acting position (state of FIG. 3 (b)).

When the engagement is released, the handle (13A) on the entrance side is lowered. Then, the arm (15) swings upward while the wheel (16) is in contact with the ground, and eventually hits the lock member (18) to rotate it counterclockwise in the figure against the toggle spring (19a). (State of FIG. 3 (c)). When the dead point of the toggle mechanism (19) is exceeded, the lock member (1
8) is further rotated counterclockwise in the figure to elastically retain the pin (23) at the lock position, which is the limit position, even though the pin (23) is disengaged from the engagement groove (20). It is in the grounded state in the figure.

[Another embodiment]

In implementing the present invention, a spring may be interposed between the weighing platform (2A) and the arm (15) so that the arm (15) is elastically biased downward.

Further, the present invention is not limited to the weighing machine, and can be applied to various installed objects having a large weight. For example, it can be applied to office supplies such as desks, electric devices such as refrigerators, and line shelves.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by this entry.

[Brief description of drawings]

The drawings show an embodiment of a mounting structure for a portable wheel according to the present invention. Fig. 1 is a side view of a main part in an installed state, Fig. 2 is a plan view of the same, and Figs. 3 (a) to 3 (c). FIG. 4 is a side view of a main part from a locked state to an unlocked state, FIG. 4 is a side view showing a method of transporting a weighing device, FIG. 5 is an overall side view of a weighing device, and FIG. 6 is the same side view. (2) …… Main body, (15) …… Support member, (16) …… Roller, (18) …… Lock member, (19) …… Holding mechanism, (2
0) ... Engagement part, (23) ... Engagement part.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshihiro Tsuchiyama 1-1-1, Hama, Amagasaki-shi, Hyogo, Kubota Iron Works Co., Ltd. (56) Reference JP-A-57-26050 (JP, A)

Claims (1)

[Claims] 1. A body (2) which can be grounded and supported, is provided with a portable roller wheel (16) which can be lifted and lowered while being urged downward.
In addition, a lock member (18) that locks the rolling wheel (16) at a supporting position that projects downward from the ground contact portion of the main body (2).
Is a mounting structure of a portable roller wheel provided in the main body (2) so as to be switchable between a lock operation position and a non-operation position, wherein the roller wheel (16) is an engaged portion (23). Is attached to the main body (2) via a support member (15) that is attached to the main body (2) so as to be movable up and down, and the lock member (18) is the engaged portion (23). Has an engaging portion (20) that engages with the wheel to lock the rolling wheel (16) at the support position, and moves to the lock operation position and the non-operation position in conjunction with the movement of the support member (15). A holding mechanism (19), which is movably provided and elastically holds the lock member (18) in each of the lock operating position and the non-operating position, switches in conjunction with the movement of the lock member (18). The lock member (18) is elastically moved to the lock position by the holding mechanism (19). While being held by the lock member (18), the engaged portion (23) of the support member (15) is locked as the rolling wheel (16) descends from above the support position. Engaging the engaging portion (20) of the
6) is locked at the supporting position, and when the locking member (18) locks the rolling wheel (16) at the supporting position, the rolling wheel (16) moves downward from the supporting position. The lock member (18) is moved to a non-acting position in conjunction with the movement of the support member (15), and is elastically held at the non-acting position by the holding mechanism (19). When the roller (16) is elastically held at the non-acting position by the holding mechanism (19), the lock member (18) moves as the rolling wheel (16) moves upward from the supporting position. Attachment of a portable roller wheel configured to be moved to a lock acting position in conjunction with the movement of the support member (15) and elastically held at the lock acting position by the holding mechanism (19). Construction.