JP2002315705A - Scraper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a scraper wherein the rigidity of the connection of a blade and a handle can be properly adjusted according to its use. SOLUTION: The scraper 1 includes a switching member to selectively switch from a deformation-preventive made wherein an elastic member cannot be deformed to prevent the blade 31 from being displaced with respect to the handle 10 to a deformation-allowable made wherein the elastic member can be deformed to allow the blade 31 to be displaced with respect to the handle 10. The switching member is constituted of a sleeve-like member 40 slidably provided on the handle 10. The sleeve-like member 40 may take the deformation- preventive location wherein the elastic member is prohibited from deforming or the deformation-allowable location wherein the elastic member is allowed to deform, however, it is preferable that the location of the member 40 can be adjusted continuously between both of the locations.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scraper used, for example, for removing wallpaper or scraping shells or the like stuck to the bottom of a ship when renovating a room.

[0002]

2. Description of the Related Art The above-mentioned scraper is generally provided with a blade at the tip of a handle portion, and the handle and the blade are firmly connected and fixed. However, if the blade and the handle are firmly connected, there is a problem that the wall is peeled off when the wallpaper is peeled off, and the ship bottom is scraped off when the shell is scraped off.

In order to avoid such a problem, a scraper in which a handle and a blade are connected via a spring member or the like is known. However, with such a scraper,
Although it can be effectively used for a specific application, there is a problem that a sufficient force is not transmitted to the blade in an application requiring a large scraping force. In other words, such a scraper can be effectively used only for a specific use depending on the elasticity of the spring member connecting the handle and the blade.

[0004]

SUMMARY OF THE INVENTION Therefore, a technical problem to be solved by the present invention is to provide a scraper whose coupling rigidity between a blade and a handle can be appropriately adjusted according to the application.

[0005]

Means, actions and effects for solving the problems The present invention provides
The present invention has been devised in order to effectively solve the above-mentioned problems of the related art, and provides a scraper having the following features.

The scraper of the present invention is configured by connecting a blade to the tip of a handle via an elastic member. And
"A deformation prohibition state in which the deformation of the elastic member is prohibited in order to prohibit the blade from being displaced with respect to the handle" and "a deformation allowable state in which the deformation of the elastic member is allowed in order to permit the blade to be displaced in relation to the handle." And a switching member for selectively switching between "."

[0007] The switching member may be a member that moves relative to the handle portion or a fixed member that is immovable with respect to the handle. When a switching member that moves relative to the handle is employed, it is preferable that the position can be adjusted steplessly.

The scraper of the present invention can be used by switching between a "transformation prohibited state in which displacement of the blade pattern is prohibited" and a "transformation permitted state in which displacement of the blade pattern is permitted". The state can be changed according to the object to be scraped by the scraper, that is, according to the magnitude of the force required for scraping.

When the position of the switching member can be adjusted steplessly, the rigidity between the blade portion and the handle portion can be changed according to various applications.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a plan view of a scraper 1 according to a first embodiment of the present invention, and FIG. 2 is an exploded perspective view thereof.

The blade 31 of the scraper 1 is sandwiched and fixed between the blade holders 30 and 32, and is connected to the tip of the handle 10 via the coil spring 20. The blade holders 30 and 32 are made of die-cast,
By being connected by 33, the blade 31 is held between them. In the present invention, the material of the blade is not particularly limited, and metal, rubber, plastic, and other appropriate materials can be appropriately used.

A recess is formed in the rear end small diameter portion 30a of the blade holding portion 30, and the coil spring 20 is connected to the recess by press fitting. This is shown in FIGS. 4 and 5, which are longitudinal sectional views of the portion "A" in FIG. On the other hand, the other end of the coil spring 20 is fixed to the inside of the cylindrical handle 10 made of iron by welding. A rubber grip 50 is fitted into the rear end of the handle 10.

A sleeve 40 as a switching member is slidably mounted on the outer periphery of the handle 10. The switching sleeve 40 is selectively fixed to one of a deformation allowable position (FIG. 4) and a deformation prohibiting position (FIG. 5).

That is, the switching sleeve 40 is in the deformation allowable position.
(FIG. 4), the sleeve is a coil spring 20
The coil spring 20
Is allowed to be elastically deformed. In other words, in the scraping work,
The blade 31 can be displaced relative to the handle 10 according to the magnitude of the force applied to the handle 10.

On the other hand, when the switching sleeve 40 is at the deformation inhibiting position (FIG. 5), the sleeve covers the outer periphery of the coil spring 20 and inhibits its elastic deformation. Therefore,
The elasticity of the coil spring 20 is locked and the blade 31
Is rigidly connected to the handle 10, and the blade 31 is
It becomes impossible to displace relative to 10.

The switching sleeve 40 is selectively fixed to a deformation allowable position or a deformation prohibited position by a positioning member 41. FIG. 3A is a front view of the positioning member 41, and FIG.
Shows a side view thereof. The positioning member 41 is composed of an arm-shaped portion 43 made of resin and a pin member 42. As shown in FIGS. 4 and 5, the convex portion 43a located above the arm-shaped portion 43 holds the head portion 42a of the pin member 42 therein. That is, the arm-shaped portion 43 and the pin material 42
Are integrated by insert molding.

The hole 40a formed in the switching sleeve 40 is
When the pin material 42 is inserted into the front hole 11 formed in the above, the switching sleeve 40 is fixed to the deformation prohibition position in FIG. The hole 40a formed in the switching sleeve 40 is
When the pin material 42 is inserted into the rear hole 12 formed in the above, the switching sleeve 40 is fixed to the deformation allowable position in FIG.

The arm-shaped portion 43 of the positioning member 41 is shown in FIG.
As shown in (a), the pin material 42 extends over an angle range exceeding 180 °, and when the pin material 42 is pushed into each of the above holes in order to fix the switching sleeve 40 at any position, a “snap” is generated.
It engages around the handle 10 with a sense of moderation.

The stepless adjustable Modification FIG. 6 and FIG. 7 is a cross-sectional view corresponding to FIG. 4 and FIG. 5 shows an alternative to the above-mentioned scraper.
In the scraper 1 shown in FIGS. 1 to 5, the position of the switching sleeve 40 is one of a deformation-prohibited position and a deformation-permitted position. On the other hand, in the modified examples of FIGS. 6 and 7, the position of the switching sleeve 140 can be adjusted steplessly.

In this modification, the handle 110 has an elongated slot 111 extending in the longitudinal direction. Handle 110
Two opposing holes are formed in the peripheral wall of the switching sleeve 140 which is slidably inserted into the outside, and the bolt 141 passes through these two holes. As shown in FIGS. 6 and 7, the bolt 141 is also passed through the slot 111. bolt
A wing nut 142 is engaged with 141, and when the wing nut 142 is loosened, the position of the switching sleeve 140 can be steplessly adjusted between a deformation permitted position and a deformation prohibited position. Then, by tightening the wing nut 142, the position of the switching sleeve 140 can be fixed.

At the position of the switching sleeve 140 shown in FIG. 6, the coil spring 20 is completely exposed, and the elastic deformation of the coil spring 20 is allowed to the maximum (deformation allowable position). As the switching sleeve 140 is slid from the state of FIG. 6 to the left side in the figure, the degree of freedom of deformation of the coil spring 20 gradually decreases. FIG. 7 shows a state in which the coil spring 20 is exposed by about half. However, when the switching sleeve 140 is engaged with the small diameter portion 30a at the rear end of the blade holding portion beyond this position, the coil spring 20 is exposed.
Elastic deformation is completely prohibited (deformation prohibited position).

In the above-described first embodiment and its modifications, it is not always necessary to employ the coil spring 20 as the elastic member. For example, a leaf spring or a columnar rubber may be employed.

Second Embodiment FIGS. 8 and 9 are views for explaining a scraper according to a second embodiment of the present invention, and are sectional views corresponding to FIGS. 4 and 5. FIG. In the scraper of the first embodiment, the degree of elastic deformation of the coil spring 20 is controlled by covering the outer peripheral side of the coil spring 20 with the switching sleeves 40 and 140. On the other hand, the scraper of the second embodiment adopts a configuration in which the adjustment rod 240 is inserted inside the coil spring 220, and controls the elastic deformation of the coil spring 220 depending on the degree of insertion of the rod 240.

As in the case of the first embodiment, the adjusting rod
The position of 240 may be either a deformation allowable position (FIG. 8) or a deformation prohibited position (FIG. 9), or may be a steplessly adjustable position. Specifically, a positioning member 41 as shown in FIG. 3 is employed, and the rod portion 42 is engaged with a hole (not shown) provided at the base end portion of the adjustment rod 240, so that two members are provided. Alternative position adjustment can be realized. Also, pattern 21
Form an elongated slot (not shown) at 0 and adjust rod 240
By exposing a threaded rod (not shown) extending from the slot to the outside and engaging a wing nut (not shown) with this, a stepless adjustment can be realized. In the deformation prohibition position of FIG. 9, the tip of the adjustment rod 240 is engaged in the concave portion 131 provided in the small diameter portion 130a at the rear end of the blade holding portion, so that the relative displacement of the blade with respect to the handle 210 can be reliably performed. Prohibition.

Third Embodiment (switching member is not moved) FIGS. 10 and 11 are views for explaining a scraper according to a third embodiment of the present invention, and are sectional views corresponding to FIGS. 4 and 5. . FIGS. 10 and 11 also show a surface 400 to be scraped by a scraper. In the first and second embodiments, the switching sleeve or the adjusting rod as the switching member is slidable along the longitudinal direction of the handle. On the other hand, in the third embodiment, a peripheral wall member 340 that does not move relative to the handle is employed as the switching member.

The peripheral wall member 340 includes a ring-shaped portion 340a and a peripheral wall portion 340b. The ring-shaped portion 340a
It is connected and fixed around the small diameter portion 330a of the blade holding portion. The peripheral wall portion 340b is a member having an arc-shaped cross section that protrudes from the ring-shaped portion 340a and extends with an angle range of 180 ° with respect to the longitudinal axis of the handle 310.

In FIGS. 10 and 11, a surface 400 to be scraped by the scraper exists below the sheet.
That is, in the deformation allowable state in FIG. 10, the peripheral wall portion 340b faces the surface 400 to be scraped. From this state, when the scraper is rotated 180 ° as indicated by the arrow B with the handle 310 as the rotation axis. Then, the state becomes the deformation prohibition state of FIG. That is, it is possible to easily switch between the deformation permitted state and the deformation prohibited state only by changing the direction of the scraper without operating the peripheral wall member 340 as the switching member.

In the deformation allowable state shown in FIG. 10, when an external force is applied to the handle 310 in the direction of arrow C about the pin 341 during the scraping operation, the coil spring 320 is elastically deformed. Since it is permitted, the handle 310 rotates in the arrow C direction. On the other hand, in the deformation-prohibited state of FIG. 11, even if an external force is applied to the handle 310 about the pin 341 in the direction of arrow C ′, the right end 340b The elastic deformation of the coil spring 320 is prohibited by the contact between the '' and the upper surface 310 of the handle, and therefore,
The handle 310 does not rotate around the pin 341 in the direction of arrow C ′.

In the third embodiment shown in FIGS. 10 and 11, the angle range in which the peripheral wall portion 340b extends is not necessarily required to be 180 °. As long as the rotation of 310 can be effectively prohibited, it may extend in an angle range slightly smaller than 180 °. However, if it exceeds 180 °, the pattern 3 in the deformation allowable state (FIG. 10)
It should be avoided as it will interfere with the rotation of the 10.

[Brief description of the drawings]

FIG. 1 is a front view showing a scraper according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of the scraper of FIG.

FIG. 3 is a front view and a side view of a positioning member used in the scraper of FIG. 1;

FIG. 4 is a partial sectional view of A in FIG. 1 in a deformation allowable state.

FIG. 5 is a partial sectional view of A in FIG. 1 in a deformation prohibited state.

FIG. 6 is a sectional view showing a modification of the scraper of FIG. 1, corresponding to FIG.

FIG. 7 is a cross-sectional view showing a modification of the scraper of FIG. 1, showing a state in which a coil spring 20 is approximately half exposed.

FIG. 8 is a sectional view of a scraper according to a second embodiment of the present invention, corresponding to FIG.

FIG. 9 is a sectional view of a scraper according to a second embodiment of the present invention, corresponding to FIG.

FIG. 10 is a cross-sectional view of a scraper according to a third embodiment of the present invention, showing a deformable state.

FIG. 11 is a cross-sectional view of a scraper according to a third embodiment of the present invention, showing a deformation prohibited state.

[Explanation of symbols]

 1 Scraper 10, 110, 210, 310 Handle 11, 12 hole 20, 220, 320 Coil spring 30, 32 Blade holding part 31 Blade 33 Screw 40, 140 Switching sleeve 41 Positioning member 42 Pin material 43 Arm-shaped part 50 Grip part 111 Slot 131 Recess 141 Bolt 142 Wing nut 240 Adjustment rod 340 Peripheral wall member 341 Pin 400 Surface to be scraped

Claims (5)

[Claims] 1. A scraper in which a blade is connected to a tip of a handle via an elastic member, wherein a deformation-prohibited state in which deformation of the elastic member is prohibited to prevent the blade from being displaced with respect to the handle. A scraper comprising: a switching member that selectively switches between a deformation allowing state in which an elastic member is allowed to deform so as to allow a blade to be displaced with respect to a handle. 2. The switching member is a sleeve member (40) slidably provided on an outer peripheral portion of a handle (10), and the sleeve member (40) covers an outer periphery of the elastic member. 2. The scraper according to claim 1, wherein the scraper is selectively lockable between a deformation prohibition position where the elastic deformation is prohibited and a deformation allowable position where the elastic member is exposed to allow the elastic deformation. 3. The elastic member is a coil spring.
The switching member includes a detachable rod (240) inside the coil spring, and is slidably provided on the handle (210). (220), a deformation prohibition position that prohibits its elastic deformation by being inserted into the rod (2).
The scraper according to claim 1, characterized in that the scraper (40) can be selectively locked in a deformation allowing position where the coil spring (220) is pulled out from the coil spring (220) to allow its elastic deformation. 4. The switching member is capable of steplessly adjusting and locking its sliding position between the deformation-prohibited position and the deformation-permitted position, thereby allowing the elastic member to have an elasticity. 4. The scraper according to claim 2, wherein the degree of deformation is adjusted steplessly. 5. The switching member is a member (340) having an arc-shaped wall (340b) extending along an outer peripheral surface of the elastic member in an angle range of substantially 180 ° and fixed to a scraper. When the scraper is used, the arc-shaped wall (340b) allows the deformation of the elastic member so that the arc-shaped wall (340b) is located on the side of the surface (400) to be scraped by the scraper. The arc-shaped wall (340b) is located on the opposite side of the surface (400) to be scraped by the scraper, and when the scraper is used, the arc-shaped wall (340b) deforms the elastic member. The scraper according to claim 1, wherein the scraper is prohibited.