RU2852257C1 - Holding tool under replaceable nozzles - Google Patents

Abstract

FIELD: hand tools.

SUBSTANCE: invention relates to hand tools, namely to a handle (grip) for a tool. This invention can be used in construction, finishing or gardening work, for example when applying materials (filler, plaster, etc.) to the surfaces being treated and levelling them. For example, the invention can be used for laying facing or floor tiles. The tool holder for replaceable attachments contains a handle designed to be connected to a replaceable attachment element. A recess is made on the surface of the handle, having an end side and a base, the recess has two side walls, and there is a hole in the base of the recess. The holding tool has a cover with a through hole and a support element on the outside. The shape of the cover matches the shape of the recess. the mechanical strength of the cover plate must be at least equal to the mechanical strength of the replaceable attachment element, wherein the cover plate is installed in the recess and fixed therein by means of a fastening connection installed in the through holes made coaxially.

EFFECT: increased operational reliability and increased service life of the retaining tool for replaceable nozzles as a whole.

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Description

The invention relates generally to hand tools, specifically tool handles. This invention can be used in installation work involving suspended and fabric ceilings, as well as in construction, finishing, and gardening work, such as applying materials (spackling, plaster, etc.) to surfaces and leveling them. For example, the invention can be used for laying facing or floor tiles.

A hand tool with removable attachments (attachments) that can be securely attached to a handle (handle) is known from the prior art. The handle has a first end and a second end with a longitudinal axis extending from the first end to the second end. A first mating surface is located at the first end. The handle includes a grip located near the proximal portion of the first mating surface. In a preferred embodiment, a threaded pin on the first mating surface and a wing nut are used as a fastening mechanism for attaching the first mating surface to a second mating surface of the removable device. Preferably, the handle also includes a stabilizing mechanism in the form of a locking pin and a stabilizing mechanism in the form of a recess for further stabilizing the removable device (patent for invention No. US6651346 "Hand tool with interchangeable attachments", published November 25, 2003).

A disadvantage of hand tools with interchangeable attachments is that the removable attachment is installed directly onto the first mating surface of the hand tool handle, without the use of additional spacers installed between them. As a result, during use, the first mating surface of the hand tool quickly wears out due to friction between the surface of the removable attachment and the first mating surface of the handle. Another disadvantage of hand tools with interchangeable attachments is that the recess in the side surface of the handle allows for additional fixation of only one end surface of the removable attachment, which will mate with the recess surface when the removable attachment and the handle are connected.

The technical problem with hand tools with interchangeable attachments is the reduced operational reliability of the tool as a whole. As a result, the service life of the tool with interchangeable attachments is reduced.

The technical result provided by the patented device consists of: increasing the operational reliability of the holding tool for replaceable attachments as a whole and, accordingly, increasing its service life, and is achieved in that the holding tool for replaceable attachments contains a handle made with the possibility of connection with an element of the replaceable attachment, on the surface of the handle there is a recess having an end side and a base, the recess is made with two sides, in the base of the recess there is an opening, the holding tool contains a cover plate, on the outer side of which there is a through hole and a supporting element, the shape of the cover plate repeats the shape of the recess, the mechanical strength of the cover plate must be no less than the mechanical strength of the element of the replaceable attachment, while the cover plate is installed in the recess and fixed in it by means of a fastening connection installed in through holes made coaxially.

The essence of the proposed invention is explained by figures 1-4.

Figure 1 shows a holding tool for replaceable attachments, containing a handle.

Figures 2 and 4 show holding tools for replaceable attachments, made in the form of a handle.

Figure 3 shows replaceable attachments of different shapes with elements of replaceable attachments.

Figures 1-4 indicate:

1 - handle;

2 - supporting element;

3 - through hole;

4 - overlay;

5 - recess;

6 - replaceable nozzle element;

7 - end side of overlay 4;

8 - side of overlay 4;

9 - side of recess 5;

10 - end side of recess 5;

11 - end side of the replaceable attachment element 6;

12 - side of the replaceable attachment element 6;

13 - base of recess 5;

14 - outer side of lining 4;

15 - a hole made in the base 13 of the recess 5;

16 - a protrusion made in the side 9 of the recess 5.

The patented device is designed as follows.

The holding tool for replaceable attachments comprises a handle 1, configured to be connected to an element of replaceable attachment 6. Since replaceable attachment 6 may consist of several elements connected to each other, the corresponding element of replaceable attachment 6 will be connected to handle 1. On the surface of handle 1, a recess 5 of an elongated shape is made with two lateral sides 9, an end side 10 and a base 13, in which an opening 15 is made. The holding tool comprises a cover plate 4, on the outer side 14 of which a through hole 3 and a supporting element 2 are made. In this case, the shape of the cover plate 4 repeats the shape of the recess 5 (the shape of the cover plate 4 is made to match the shape of the recess 5). The dimensions of the cover plate 4 are selected in such a way that they are proportionate to the dimensions of the recess 5. The cover plate 4 is installed in the recess 5 and fixed in it using a fastening connection (not shown in the figures) installed in through holes 3 and 15. Through holes 3 and 15 are made coaxially.

In the patented device, the mechanical strength of the lining 4 must additionally be no less than the mechanical strength of the replaceable attachment element 6.

To install the element of the replaceable nozzle 6, it is necessary to place the cover 4 in the recess 5, then it is necessary to place the element of the replaceable nozzle 6 on the outer side 14 of the cover 4, while the supporting element 2 of the cover 4 must be placed in the through hole of the element of the replaceable nozzle 6. Next, align the through hole made in the element of the replaceable nozzle 6 with the coaxial holes 3 and 15, after which a fastening connection is placed in these three holes, and with the help of it, fix the element of the replaceable nozzle 6 in the holding tool.

In order to replace a faulty overlay 4 or change an element of the replaceable nozzle 6, it is necessary to remove the fastening connection, disconnect the element of the replaceable nozzle 6 from the overlay 4, then disconnect the overlay 4 from the recess 5 (if necessary), and then install a serviceable (new) overlay 4 (if necessary) and a serviceable (or new) element of the replaceable nozzle 6 in the reverse order.

The patented device, unlike the prototype, utilizes an overlay. During tool operation, the outer surface of the overlay will be subject to wear due to friction between the tool and the replaceable tool element. However, the handle will not wear at the mounting location, as it will not be in contact with the replaceable tool element, unlike the prototype. A worn or damaged overlay can be replaced without replacing the tool handle. This increases the operational reliability of the handle compared to the prototype and extends its service life. The recess, which has sides, an end face, and a base, allows for the installation of an overlay whose shape matches the recess. Accordingly, the two sides of the overlay, its end face, and the inner face mating with the base of the recess, will rest against the sides, end face, and base of the recess, respectively. This reduces the play in the escutcheon, reducing friction against the base of the recess and the sides of the recess, and reducing wear on the handle and escutcheon. This increases the operational reliability of the handle and escutcheon, extending their service life. Holes in the escutcheon and recess are necessary for connecting and securing the escutcheon and handle, as well as for subsequent connection and securing with the replaceable attachment element. Therefore, the alignment of the holes in the recess and escutcheon allows the handle and escutcheon to be connected without distortion, increasing the service life of the handle and escutcheon. Misalignment, in turn, can lead to premature wear of the handle and escutcheon, as the escutcheon may shift relative to the handle during connection and fixation. This can damage the escutcheon or handle, reducing their operational reliability and service life. Moreover, the support element formed on the surface of the pad allows for additional fixation of the replaceable attachment element, which further reduces friction between the pad and the replaceable attachment, increases the operational reliability of the pad, and extends its service life. If the pad is made of a material no less durable than the replaceable attachment element, this further increases the operational reliability and service life of the pad. Since the pad, being equally or even more durable than the replaceable attachment element, will wear out much longer than a pad made of a less durable material, such a setup will not deteriorate for a longer period and will not require replacement. Thus, since the proposed patented device will increase the operational reliability and service life of the pad and handle, the proposed patented device will correspondingly increase the operational reliability and service life of the replaceable attachment holding tool as a whole.

The most technologically advanced design of a holding tool for replaceable attachments is achieved if the fastening connection in the patented device contains a threaded part.

The most technologically advanced design of a holding tool for replaceable bits is achieved if the bore 15 at the base of recess 5 in the patented device is made through. Furthermore, the most technologically advanced design of a holding tool for replaceable bits is achieved if the through bore 15 has an internal thread. Furthermore, the bore 15 can be blind and, for example, also have an internal thread.

The most technologically advanced design of a holding tool for replaceable attachments is achieved if the pad 4 in the recess 5 in the patented device is fixed without a gap.

The most technologically advanced design of a holding tool for replaceable attachments is achieved if the pad 4 in the patented device is made of steel. Furthermore, the replaceable attachment element 6 in the patented device can be made of the same grade of steel as the pad 4.

A pilot batch of the invention was produced, which underwent testing and confirmed its advantages.

An example of the implementation of the patented device is given below.

Example of a patented device

A holding tool for interchangeable bits comprises a handle capable of being connected to a replaceable bit element. A recess is formed in the handle's surface. The recess has two sides, an end face, and a base with a blind hole with an internal thread. The holding tool comprises a cover plate, the outer surface of which contains a through hole and a support element. The support element is formed on the outer surface of the cover plate, and the shape of the cover plate matches the shape of the recess. The mechanical strength of the cover plate must be no less than that of the replaceable bit element. The cover plate is installed in the recess and secured therein using a fastener containing a threaded component and seated in coaxial through holes.

Claims (8)

1. A holding tool for replaceable attachments, comprising a handle configured to be connected to an element of the replaceable attachment, a recess having an end side and a base is made on the surface of the handle, characterized in that the recess is made with two sides, an opening is made in the base of the recess, the holding tool comprises a pad, on the outer side of which a through hole and a supporting element are made, the shape of the pad repeats the shape of the recess, the mechanical strength of the pad must be no less than the mechanical strength of the element of the replaceable attachment, while the pad is installed in the recess and fixed in it using a fastening connection installed in through holes made coaxially. 2. A holding tool for replaceable attachments according to paragraph 1, characterized in that the fastening connection contains a threaded part. 3. A holding tool for replaceable attachments according to paragraph 1, characterized in that the hole in the base of the recess is made through. 4. A holding tool for replaceable attachments according to paragraph 3, characterized in that an internal thread is made in the through hole made in the base of the recess. 5. A holding tool for replaceable attachments according to paragraph 1, characterized in that the hole in the base of the recess is made blind. 6. A holding tool for replaceable attachments according to paragraph 5, characterized in that an internal thread is made in the blind hole made in the base of the recess. 7. A holding tool for replaceable attachments according to paragraph 1, characterized in that the pad is fixed in the recess without a gap. 8. A holding tool for replaceable attachments according to paragraph 1, characterized in that the overlay is made of steel.