JPH0623267Y2 - Band length adjuster for backpack device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a band length adjusting device for a backpack device such as a backpack power sprayer or a backpack power spreader. The present invention relates to a band length adjusting device.

[Conventional technology]

BACKGROUND ART A backpack device such as a backpack power sprayer or a backpack power sprayer is equipped with a band that is passed through both shoulders of the worker on the left and right because the worker carries it. Prior to the work, the band is adjusted according to the physique, etc. of the worker carrying the backpack device, and the band has a minimum length for compactness when packed at the time of shipping from the manufacturing factory.

Conventional adjustment of the band is performed by changing the folding amount of the band. That is, the band is inserted through the insertion locking member and then folded back at the folding member, and the end portion is inserted through the insertion locking member again, and the end portion is locked together with the passing portion on the forward side. In the adjustment operation, the band is loosened in the insertion locking member, the position of the passing portion on the forward side is changed, and the folded length of the band, that is, the overlapping portion of the band is changed, and then the band is adjusted. Is re-tightened at the insertion locking member.

[Problems to be solved by the device]

The problems of the conventional band length adjusting device are listed below.

(A) In the length adjusting operation, the band is loosened in the insertion locking member, the insertion position is changed, and the band is tightened again, which is very complicated.

(B) The length needs to be adjusted for each of the left and right bands, which is inefficient.

It is an object of the invention of claim 1 to provide a band length adjusting device for a backpack device which overcomes the problem (a) and facilitates the adjusting operation.

It is an object of the invention of claim 2 to provide a band length adjusting device for a backpack device which can omit the trouble of adjusting the length of the band individually on the left and right sides.

An object of the invention of claim 3 is to prevent the element of the band length adjusting device of the backpack device from hitting the back of the operator and deteriorating the comfort of carrying the backpack.

[Means for Solving the Problems]

The invention will be described using the reference numerals of the drawings corresponding to the embodiments.

The backpack device (10), which is the premise of the present invention, includes bands (28, 30) on the left and right that allow the left and right shoulders of an operator to pass through. Further, in the band length adjusting device of the backpack device (10) of the present invention, the length adjusting side end (40) of the bands (28, 30) is the backpack device.
The insertion member (36) fixed to the upper part of the worker side part (24) of (10) is inserted from the upper side to the lower side, and the position in the up and down direction can be adjusted freely and can be separated into the worker side part (24). It is locked in.

In the band length adjusting device of the backpack device (10) according to claim 2, the left and right bands (28, 30) of the length adjusting side ends (40) are coupled to each other and are connected by a common fastening member (56). It is fastened to the operator side part (24).

In the band length adjusting device of the backpack device (10) according to claim 3, the vertically extending recess (38) is formed in the fastening portion of the length adjusting side end (40) of the worker side portion (24). The length adjusting side end portion (40) is housed in the recess (38).

[Action]

According to the first aspect of the present invention, the length adjusting side end portion (40) of the band (28, 30) can be detachably fastened to the worker side portion (24) by selecting a vertical position. Since the lower end of the band (28, 30) and the position of the insertion member (36) are fixed, the lower end of the band (28, 30) can be changed by changing the fastening part of the vertical length adjusting side end (40). Bands (28,30) from to insertion member (36)
The length of the band (2
The length of 8,30) changes.

According to the second aspect of the invention, the lengths of the portions of the left and right bands (28, 30) that are passed through the shoulders of the operator can be simultaneously changed by changing the fastening points of the common fastening member (56).

According to the third aspect of the invention, the length adjusting side end of the band (28, 30)
The (40) is housed in the recess (38) of the worker-side portion (24), and the protrusion of the worker-side portion (24) to the front surface side is avoided.

〔Example〕

 The present invention will be described below with reference to the embodiments shown in the drawings.

FIG. 1 is a perspective view of the backpack power sprayer 10 as seen obliquely from above on the worker side. The resin molded body 12 is manufactured by blow molding and integrally has an upper chemical liquid tank portion 14 for storing a chemical liquid and a mounting portion 16 protruding rearward. The equipment recess 18 is formed between the lower portion of the chemical liquid tank portion 14 and the mounting portion 16, and the equipment 20, such as an engine and a pump, is placed in the equipment recess 18 and mounted on the mounting portion 16. It is placed. The lid 21 is attached to the upper portion of the chemical liquid tank portion 14 by screwing, and closes an inlet for feeding the chemical liquid into the chemical liquid tank portion 14, and the pedestal 22 is a mounting portion.
It is fixed at the bottom of 16. The front surface side of the resin molded body 12 and the pedestal 22, that is, a substantially vertical surface portion on the worker side forms a worker side surface portion 24. The backrest 26 is made of a cushion material having a predetermined thickness and is fixed to the lower portion of the operator side surface portion 24. The left and right bands 28 and 30 are the side portions 24 of the worker of the backpack power sprayer 10.
It is provided on the side, and a locking triangular metal fitting 32 is attached at the lower end. The locking triangular metal fittings 32 are displaceably mounted in a suitable range in locking holes 34 formed at positions that laterally project at the front end portions of the left and right side portions of the gantry 22.
The bands 28, 30 are fixed to a common adjusting metal fitting 40 at the end opposite to the locking triangular metal fitting 32, and the adjusting metal fitting 40 is a triangular shape for inserting the band at the upper center of the operator side surface 24. Metal fitting 36
Is inserted from above to below. The accommodation groove 38 has a width slightly larger than that of the adjustment fitting 40, and extends above the backrest 26 in the center of the operator side surface portion 24 in the vertical direction. The mounting plate 44 has substantially the same size as the housing groove 38 in the vertical and horizontal directions, is housed in the housing groove 38, and is fixed to the bottom surface of the housing groove 38 by screws 48 and 50 at the upper and lower ends, respectively. Has been done. The above-mentioned triangular metal fitting 36 for band insertion is the mounting plate 44
A plurality of locking holes 46 are pivotally supported on the upper end of the mounting plate 44 at equal intervals in the vertical direction.

FIG. 3 is a detailed view of the lower end of the mounting plate 44 as seen from the operator's back side. 1 and 3, each locking hole 46 is
It has a circular portion 52 and a narrow portion 54 protruding upward from the circular portion 52.

FIG. 2 is a structural view of the area including the mounting plate 44 as viewed from the side. The mounting plate 44 is appropriately floated from the bottom surface of the housing groove 38 in the area where the locking hole 46 is formed. Retaining pin
56 is attached to approximately the center of the adjustment metal fitting 40, and has a shaft portion 58 and a circular flange portion 60 at the tip.

2 and 3, the width of the narrow portion 54 is larger than the diameter of the shaft portion 58 and smaller than the diameter of the flange portion 60. Also,
The diameter of the circular portion 52 is larger than the diameter of the retaining pin 56. Fastening pin 56
Is inserted into the circular portion 52 of the locking hole 46 from the front side to the back side of the mounting plate 44, while moving the shaft portion 58 to the narrow portion 54, the flange portion 60 is moved to the upper edge of the narrow portion 54 and mounted. The flange portion 60 is brought into contact with the back surface of the plate 44 to prevent the plate 44 from coming off the locking hole 46.

The operation of the embodiment will be described.

The adjustment metal fitting 40 is inserted through the band insertion triangular metal fitting 36 at the center of the upper portion of the operator side surface portion 24 from above to below. The retaining pin 56 attached to the adjustment metal fitting 40 is inserted into the selected locking hole 46, the shaft portion 58 is positioned in the narrow portion 54, and the flange portion 60 is attached to the rear surface side of the mounting plate 44. Locking hole by contact 46
Is locked. The lower the locking hole 46 into which the fastening pin 56 is fastened, the longer the length of the bands 28, 30 from the locking triangular bracket 32 to the band inserting triangular bracket 36, that is, the shoulder of the operator. The length of the band 28, 30 in the threaded portion is reduced. Therefore, the locking hole 46 for fastening the fastening pin 56 is selected according to the physique and the like of the worker carrying the backpack power sprayer 10. When the worker carries the backpack power sprayer 10 on the back side of the worker, the parts of the bands 28, 30 on the side of the adjusting metal fitting 40 and the adjusting metal fitting 40 are accommodated in the accommodation groove 38, and the operator side surface. The protrusion of the portion 24 onto the surface is avoided. As a result, the end portions of these bands 28 and 30 and the adjustment fitting 40
Is strongly prevented from hitting the back of the worker.

At the time of packing when the backpack power sprayer 10 is shipped from the manufacturing factory, the fastening pin 56 is stopped in the locking hole 46 at the lowermost end, and the band from the locking triangular metal fitting 32 to the band inserting triangular metal fitting 36. The length of 28,30 is minimized.

In the illustrated embodiment, the band length adjusting device of the present invention is applied to the backpack power sprayer 10, but the band length adjusting device of the present invention is applied to the backpack power spreader equipped with a blower and other backpack devices. It goes without saying that is also applicable.

In the illustrated embodiment, the backpack power sprayer 10 does not have a backpack frame, but by forming the housing groove 38 on the operator-side surface of the backpack frame, a backpack device with a backpack frame can also be provided with this invention. Applicable.

[Effect of device]

According to the first aspect of the present invention, the length of the band is adjusted by changing the stop portion at the end on the length adjusting side of the band on the operator side portion of the backpack device, so that the adjusting operation becomes very simple. .

According to the second aspect of the present invention, the left and right band length adjusting side ends are connected to each other, and the lengths of the left and right bands are adjusted at the same time by changing the fastening points on the operator side portion of this connecting part. This eliminates the need to adjust the lengths of the left and right bands individually, resulting in efficiency.

According to the third aspect of the present invention, since the end portion on the length adjusting side of the band is housed in the recess of the worker side portion and is prevented from protruding to the surface of the worker side portion, when carrying the backpack device on its back. , The length adjustment side end is prevented from hitting the back strongly even though it is in a position facing the operator's back,
A good backpack can be maintained.

[Brief description of drawings]

The drawings relate to an embodiment of the present invention, FIG. 1 is a perspective view of the backpack-powered sprayer as seen obliquely from above on the operator side, FIG. 2 is a structural view of the range including the mounting plate as seen from the side, and FIG. The figure is a detailed view of the lower end of the mounting plate viewed from the operator's back side. 10 …… backpack power sprayer (backpack device), 24 …… side face of the worker (worker side part), 28,30 …… band, 36 …… triangle fitting for band insertion (insertion member), 38 …… Housing groove (recess), 40 …… Adjustment metal fittings (end on the length adjustment side), 56 …… Fastening pin (fastening member).

Claims (3)

[Scope of utility model registration request] 1. A band (28, 3) which is passed through the left and right shoulders of an operator.
In a backpack device (10) having right and left (0), the band (2
The length adjusting side end portion (40) of (8, 30) is inserted through the insertion member (36) fixed to the upper portion of the worker side portion (24) of the backpack device (10) from above to below, A band length adjusting device for a backpack device, characterized in that it is detachably fastened to the worker side part (24) so that the position in the vertical direction can be adjusted. 2. The length adjusting side end portions (40) of the left and right bands (28, 30) are connected to each other and are fastened to the worker side portion (24) by a common fastening member (56). The band length adjusting device according to claim 1, wherein the band length adjusting device is provided. 3. A recess (38) extending in the up-down direction is formed in a retaining portion of the length adjusting side end (40) of the worker side portion (24), and the length adjusting side end (40) is formed. Band length adjusting device for a backpack device according to claim 1 or 2, characterized in that 40) is housed in said recess (38).