EP3820658B1 - Table saw - Google Patents

Description

The invention relates to a table saw according to the preamble of claim 1. The present invention is particularly concerned with the task of reducing the probability of operational malfunctions and/or increasing operational reliability.

The table saw comprises a support structure with a support section that provides a support surface for supporting a workpiece, and a saw blade that extends through an opening in the support section so that at least a portion of the saw blade is located below the bottom of the support section. The table saw further comprises a housing arrangement located below the bottom of the support section, which surrounds the portion of the saw blade located below the bottom of the support section. The saw blade, together with the housing arrangement, can be pivoted relative to the support section in order to set an angle between a cutting plane of the saw blade and the support surface.

The EP 3 424 656 A1 describes a table saw with a locking device which comprises a locking element movably mounted on a pivot bearing.

The US 2017/0252841 A1 describes a table saw with a soft foldable gasket for sealing a gap between a sawblade slot and a sawblade housing. One object of the invention is to increase operational reliability.

The object is achieved by a table saw according to claim 1. The table saw comprises a cover flap which covers a gap between the housing arrangement and the underside of the support section which is created when the housing arrangement is pivoted, in order to prevent a user of the table saw from being able to reach through the gap to the saw blade. In this way, the operational reliability of the table saw can be increased. The cover flap comprises a fastening section with which the cover flap is expediently mounted in a linearly movable manner on the support structure, in particular on a guide slot. The fastening section is an edge region of the cover flap.

The cover flap is expediently mounted on the housing arrangement and/or the support structure, in particular movably. The cover flap is preferably movably mounted on the housing arrangement and/or fixedly mounted on the support structure.

For example, the cover flap can be moved from a first position to a second position by pivoting the housing arrangement. In the first position, the cover flap is aligned parallel to the underside of the support section and/or in the second position, it is inclined about a horizontal axis to the underside of the support section.

The support structure has several legs that can be used to support the support section against the ground. There are free spaces between the legs through which a user can get under the The table saw, in particular the support structure, is thus to a certain extent unencapsulated and allows a user to easily reach under the support section.

The table saw optionally includes a saw blade cover. The saw blade cover is designed in particular as a saw blade hood and includes a cover body made of a first material that extends in a longitudinal direction for at least partially covering a saw blade of the table saw. The saw blade cover also includes a contact area arranged on the front side of the cover body. The contact area is beveled relative to the longitudinal direction, so that contact of the contact area with a workpiece brought up to the saw blade can cause the cover body to deflect.

Preferably, in the saw blade cover, the contact area has a sliding section made of a second material, along which the workpiece can slide when it comes into contact with the contact area.

In particular, if the workpiece is made of a hard material and/or has a sharp edge on the side that is to be fed to the sawblade, it can happen with conventional sawblade covers that the workpiece cuts into the material of the contact area when it comes into contact with the contact area and consequently gets stuck in the contact area. It can then happen that the sawblade cover is not deflected so that the cutting area of the sawblade is not released. Consequently, the workpiece cannot be brought to the cutting area of the saw blade - this will cause the table saw to malfunction.

By equipping the saw blade cover with the sliding section, the probability of this malfunction can be advantageously reduced. In particular, the sliding section can prevent a workpiece from cutting into the contact area when it comes into contact with it and getting caught on the contact area. Consequently, the probability of malfunction can be reduced.

The first material can also be referred to as the cover body material and the second material can also be referred to as the sliding section material. The second material differs from the first material. The second material expediently has a greater hardness than the first material. The first material is in particular plastic and/or the second material is in particular metal, preferably aluminum.

The sliding section is expediently strip-shaped. The sliding section is preferably designed as an aluminum strip. According to a preferred embodiment, the contact region and the sliding section are elongated. The sliding section expediently runs in the longitudinal direction of the contact region.

The contact area is expediently a front-side contact surface. The sliding section is expediently only present in a partial area, in particular a central partial area in the horizontal direction, of the front-side contact surface.

According to an alternative embodiment, the entire contact region, in particular the entire contact surface, is made of the second material.

Alternatively or additionally, a saw blade cover is also provided, the cover body of which is made entirely of metal, in particular aluminum.

Preferably, the table saw comprises the saw blade cover described above, the support section for placing the workpiece, and the saw blade.

According to a preferred embodiment, the cover body at least partially covers the saw blade in a covering position. The cover body is mounted so that it can move relative to the saw blade, so that the cover body can be moved into a release position by applying pressure to the contact area with the workpiece moving on the support section in the direction of the saw blade, in which the saw blade is released further than in the covering position. In particular, the cutting area of the saw blade is released in the release position. The cutting area is the area of the saw blade with which the workpiece is processed when the table saw is used as intended.

Optionally, the table saw further comprises a stop unit, in particular an angle stop, for guiding and/or feeding a workpiece to the saw blade of the table saw. The stop unit comprises a stop arm extending in a longitudinal direction for supporting the workpiece. The stop arm comprises a main section made of a first material, which extends over more than half of the longitudinal extent of the stop arm. The The stop arm further comprises at least one second end portion disposed at a longitudinal end of the main portion. The second end portion can come into contact with the saw blade as a workpiece is fed toward the saw blade.

Preferably, the at least one end portion is made of a second material.

When the workpiece is fed with the stop unit, the end section may come into contact with the saw blade. Conventional stop units usually have a one-piece metal stop arm. If the saw blade comes into contact with a metal end section of such a conventional stop arm, it may happen (if the table saw has a certain safety function) that the saw blade is stopped and/or moved to a safety position. This disrupts the operation of the table saw. The stop arm may also be damaged, so that the entire stop arm must be replaced due to the one-piece design.

Because the end section of the present stop unit is made of a different material than the main section, the material of the end section (in particular independently of the material of the main section) can be selected in such a way that any safety function that may be present on the table saw is not triggered by the contact of the saw blade with the end section. Furthermore, the material of the end section can be selected in such a way that the end section can be provided as a cheap wearing part. At the same time, the main section can be made of a stable, durable material, such as metal. even if this material would trigger the safety function if the saw blade came into contact with the main section.

The features "first material" and "second material" mentioned with respect to the stop unit are different features than the features "first material" and "second material" mentioned above with respect to the saw blade cover. The feature "first material" mentioned with respect to the stop unit may also be referred to as "third material" or "main section material" and the feature "second material" mentioned with respect to the stop unit may also be referred to as "fourth material" or "end section material".

The second material mentioned in relation to the stop unit differs from the first material mentioned in relation to the stop unit. In particular, the second material has a different conductivity than the first material. Expediently a lower conductivity. By way of example, the first material is metal and/or the second material is plastic.

The at least one end section is expediently attached to the main section in a removable manner. For example, the at least one end section is inserted into and/or onto a front side of the main section. Expediently, the main section is an extruded profile and/or the end section is a plastic cap.

The table saw preferably comprises the stop unit described above, the support section for placing the workpiece, and the saw blade. The table saw is expediently designed on the basis of an electrical Property, in particular an electrical conductivity, of an object in contact with the saw blade to perform a safety function, in particular for stopping the saw blade and/or for moving the saw blade into a safety position. Preferably, the electrical property, in particular the electrical conductivity of the second material is such that the table saw does not perform the safety function when the saw blade comes into contact with the end section.

Conveniently, the safety function is not triggered by contact between the saw blade and the workpiece and is triggered when the saw blade comes into contact with the human body.

The table saw preferably comprises the saw blade and the support structure with the support surface for placing the workpiece when machining the workpiece with the saw blade. The table saw comprises a stop unit, in particular a stop unit as explained above, for guiding and/or feeding the workpiece to the saw blade. The stop unit comprises a bearing section which engages with a guide element of the table saw in order to provide a movable bearing of the stop unit relative to the support structure along the guide element. The guide element is arranged offset downwards relative to the support surface.

According to a preferred embodiment, the bearing section comprises rollers, via which the bearing section is movably mounted relative to the support section. Two of the rollers are expediently aligned in different spatial directions relative to one another.

Figur 1

eine Sägeblattabdeckung,

Figur 2

eine Tischsäge mit der Sägeblattabdeckung,

Figur 3

eine Anschlagseinheit,

Figur 4

ein Anschlagsarm der Anschlagseinheit

Figur 5

einen Lagerabschnitt der Anschlagseinheit, der an einer Stützstruktur einer Tischsäge beweglich gelagert ist,

Figur 6

eine Tischsäge mit der Anschlagseinheit,

Figur 7

einen an einer Auflageabschnitt-Unterseite einer Tischsäge befindlichen Stellabschnitt in einer ersten Stellung,

Figur 8

den Stellabschnitt in einer zweiten Stellung,

Figur 9

eine unbestückte Zubehör-Befestigungsstruktur,

Figur 10

eine bestückte Zubehör-Befestigungsstruktur,

Figur 11

eine unbestückte Absaugplatte,

Figur 12

eine bestückte Absaugplatte.

Further exemplary features and embodiments are explained below with reference to the figures.

Figure 1

a saw blade cover,

Figure 2

a table saw with the saw blade cover,

Figure 3

a stop unit,

Figure 4

a stop arm of the stop unit

Figure 5

a bearing section of the stop unit which is movably mounted on a support structure of a table saw,

Figure 6

a table saw with the stop unit,

Figure 7

an adjusting section located on a support section underside of a table saw in a first position,

Figure 8

the setting section in a second position,

Figure 9

an unequipped accessory mounting structure,

Figure 10

a fitted accessory mounting structure,

Figure 11

an empty suction plate,

Figure 12

a fitted suction plate.

In the following description, reference is made to the spatial directions referred to as x-direction, y-direction and z-direction, which are aligned orthogonally to each other. The z-direction can also be called the height direction and runs vertically. The x-direction and the y-direction are horizontal directions.

First, we will look at the basic structure of the table saw. The following explanation applies to all table saws mentioned here, especially to those in the Figures 2 and 6 shown table saws 10, 20, 30. Preferably, all table saws mentioned here are the same table saw.

The table saw 10, 20, 30 is designed as a circular table saw by way of example. The table saw 10, 20, 30 is in particular a semi-stationary tool. The table saw 10, 20, 30 comprises a saw blade 2, in particular a circular saw blade. The table saw 10, 20, 30 expediently comprises a drive unit 86 for driving, in particular rotating, the saw blade 2. The drive unit 86 expediently comprises an electric motor.

The table saw 10, 20, 30 comprises a support structure 12, which is designed as a table, for example. The support structure 12 comprises a support section 1, the support section top 8 of which serves as a support surface 8 for a workpiece 11 to be machined with the saw blade 2. The support section 1 is designed as a plate, in particular as a table top. The support section 1 expediently has a rectangular base area. The support surface 8 is expediently rectangular. The support surface 8 is aligned normal to the z-direction and is preferably flat.

The support structure 12 further comprises several legs 7 - for example four legs 7 arranged at the four corner areas of the support section 1 - over which the Support section 1 is supported against the ground. There are expediently free areas between the support legs 7, which extend, for example, over more than three quarters of the vertical extent of the support legs 7. In particular, there is no paneling, in particular no housing wall, between two or more support legs 7. A user can reach between two support legs 7 into the free space below the support section underside 14.

In the support section 1, in particular the support surface 8, there is an opening, for example a slot, through which the saw blade 2 engages. The opening is aligned with its longitudinal direction in the x-direction. A part of the saw blade 2 is located above the support section 1, in particular above the support surface 8, and another part of the saw blade is located below the support section 1, in particular below the support section underside 14.

Purely by way of example, the table saw 10, 20, 30 comprises a safety function that is automatically triggered when contact is detected between the saw blade 2 and a body part of a person. The table saw 10, 20, 30 is expediently designed to detect an electrical property, in particular an electrical conductivity, of an object in contact with the saw blade by providing an electrical signal to the saw blade 2 in order to determine whether the object is a human body part. The table saw 10, 20, 30 is further designed to carry out the safety function on the basis of the detected electrical conductivity. When carrying out the safety function, for example, the saw blade 2 is stopped, in particular braked, and/or the saw blade 2 is placed in a safety position, in particular in a safety position in which the saw blade 2 is completely below the support surface 8.

The functionality of such a detection of a contact of the saw blade 2 with a body part and a safety function is e.g. EP 1 234 285 B1 known, so that a detailed description of how it works is omitted here.

The table saw 10, 20, 30 has an adjustment section 3, which is exemplary in the Figures 7 and 8 is shown. The adjusting section 3 is designed to adjust the position of the saw blade 2 relative to the support surface 8. The adjusting section 3 is expediently designed to pivot the saw blade 2 relative to the support surface 8 about a pivot axis running in the x-direction in order to adjust an angle between the cutting plane of the saw blade 2 and the support surface 8. The adjusting section 3 is also expediently designed to move the saw blade 2 into different positions along a linear movement path, in particular a vertical and/or linear movement path pivotable about the aforementioned pivot axis, in order to adjust how far the saw blade 2 protrudes upwards from the opening. In this way, for example, the cutting depth of the table saw 10, 20, 30 can be adjusted.

The saw blade cover 40 will be discussed in detail below. The saw blade cover 40 can be provided as part of one of the table saws 10, 20, 30 described here and/or on its own. The saw blade cover 40 already represents an embodiment in itself.

The saw blade cover 40 is in itself in the Figure 1 shown. In the Figures 2 and 6 the saw blade cover 40 is shown in a state attached to the table saw 10, 20, 30.

The saw blade cover 40 is designed in particular as a saw blade hood and comprises a cover body 41 made of a first material that extends in a longitudinal direction (of the saw blade cover 40) for at least partially covering the saw blade 2 of the table saw 10, 20, 30. The saw blade cover 40 further comprises a contact region 47 arranged on the front side of the cover body 41. The contact region 47 is beveled relative to the longitudinal direction of the saw blade cover 40, so that contact of the contact region 47 with a workpiece 11 moving towards the saw blade 2 can cause the cover body 41 to be deflected. The contact region 47 has a sliding section 48 made of a second material, along which the workpiece 11 can slide when it comes into contact with the contact region 47.

The sliding portion 48 is provided to prevent the workpiece 11 from cutting into the contact area 47 when it comes into contact with it and getting caught on the contact area 47.

The second material differs from the first material. The second material expediently has a greater hardness than the first material. The first material is in particular plastic and/or the second material is in particular metal, preferably aluminum.

The saw blade cover 40, in particular the cover body 41, is preferably elongated and in particular flat and/or plate-shaped. The cover body 41 is designed in the shape of a sword. In the intended orientation, the sides of the cover body 41 with the largest surface area - in particular the long sides - are aligned normal to a horizontal direction, in particular normal to the y-direction, as shown in the Figures 2 and 6 is shown.

On the underside of the cover body 41 there is an opening 43, in particular a slot, into which the saw blade 2 can be at least partially received. In the state in which it is at least partially in the opening 43, the saw blade 2 is covered, for example, by the long sides, the top side and/or the front end side of the cover body 41.

The saw blade cover 40 comprises a connection section 44, which has, for example, a suction connection 45. A suction hose (not shown in the figures) can be connected to the suction connection 45 in order to suck up dust particles that arise when sawing the workpiece 11. The connection section 44 comprises a mechanical interface for fastening the saw blade cover 40 to a fastening section 46 of the table saw 10, 20, 30, in particular to the riving knife 9. The riving knife 9 is arranged, for example, in the x-direction behind the saw blade 2. The riving knife 9 protrudes, for example, from the opening of the support surface 8. The cover body 41 is expediently mounted on the connection section 44 so as to be pivotable about a horizontal axis, in particular an axis running in the y-direction. The connection section 44 is arranged in the longitudinal direction of the saw blade cover 40 on the rear Front side of the saw blade cover 40. In the state fastened to the fastening section 46, i.e. when the saw blade cover 40 is installed as intended on the table saw 10, 20, 30, the saw blade cover 40 is expediently aligned with its longitudinal direction parallel to the x-direction.

The contact area 47 already mentioned above is arranged in the longitudinal direction of the saw blade cover 40 on the front end face of the saw blade cover 40. The contact area 47 expediently represents the front end face of the saw blade cover 40, in particular the front end face of the cover body 41.

The contact area 47 is bevelled relative to the longitudinal direction of the saw blade cover 40. As shown in the Figures 2 and 6 As can be seen, the contact area 47 (when the saw blade cover 40 is installed) is bevelled, i.e. inclined, relative to the x-direction and relative to the support surface 8. In particular, the contact area 47 is aligned normal to an xz-direction. In an xz-section, the contact area 47 runs diagonally from the bottom to the top right, in the direction away from the saw blade 2.

The cover body 41 expediently has a contact point 53 which, in the installed state of the saw blade cover 40, preferably forms the lowest point of the saw blade cover 40 and/or rests on the support surface 8 (provided that the cover body 41 is not deflected, in particular raised, by the action of the workpiece 11).

The contact area 47 is advantageously curved in an xz section, in particular parabolic. Contact region 47 is bevelled in such a way that when a workpiece 11 located on the support surface, which is moving in the x-direction towards the saw blade 2, hits the contact region 47, a force component (in particular an upward force component) is provided which causes a deflection, in particular a pivoting, of the cover body 41 relative to the saw blade 2, the support surface 8 and/or the connection section 44, in particular a deflection and/or pivoting upwards.

By pressing the workpiece 11 against the contact area 47 by the user, the position of the cover body 41 can be changed so that the cover body 41 clears the path to the saw blade 2 and/or the cutting area of the saw blade 2. The cover body 41 expediently lifts off the support surface 8 with its contact point 53.

During the movement of the workpiece 11 towards the saw blade 2, the workpiece 11 remains in contact with the contact area 47 for part of the way and slides along the sliding section 48. The cover body 41 is pushed further and further upwards by the contact of the workpiece 11 with the contact area 47.

Before the workpiece 11 comes into contact with the contact area 47, the cover body 41 is expediently in a covering position in which the cover body 41 at least partially covers the saw blade 2 and the contact point 53 expediently rests on the support surface 8. If the contact area 47 is acted upon by the workpiece 11 moving in the direction of the saw blade 2, the cover body 41 is deflected further and further until it is in a release position in which the saw blade 2 is released further than in the cover position. In the release position, the cover body 41 is expediently deflected so far that the workpiece 11 can be fed to the cutting area of the saw blade 2 and can be processed by the saw blade 2.

The sliding section 48 is expediently designed in strip form, in particular in band form. The sliding section 48 is preferably designed as a metal strip, in particular as an aluminum strip. Alternatively, the sliding section 48 can also be made of another hard material, which is expediently harder than the first material of the cover body 41. The sliding section 48, in particular the aluminum strip, is embedded in the contact region 47, in particular the contact surface, and/or placed on it, in particular glued on.

The contact area 47 and the sliding section 48 are preferably elongated. The sliding section 48 expediently runs in the longitudinal direction of the contact area 47. The longitudinal direction of the contact area 47 and/or the sliding section 48 expediently runs diagonally upwards relative to the support surface 8, in particular in the direction away from the saw blade 2. The contact area 47 is expediently a front-side contact surface, in particular of the cover body 11.

The sliding section 48 is expediently only present in a partial area, in particular a central partial area in the horizontal direction, in particular in the y-direction, of the front contact surface. In the y-direction, surface sections 49 are expediently formed laterally from the sliding section 48, on which the sliding section 48 does not is present. These surface sections 49 are expediently made of the first material and, for example, take up more than half of the y-extension of the contact surface, so that the sliding section 48 expediently takes up less than half of the y-extension.

According to an alternative embodiment, the entire contact area, in particular the entire contact surface, is made of the second material, so that the entire contact area represents the sliding section.

The sliding section 48 expediently extends over more than half of the longitudinal extent of the contact area 47. For example, the cover body 41 has a projection 52 that projects obliquely upwards and is arranged in the area of the front end face of the cover body 41 and provides part of the contact area 47. The sliding section 48 expediently extends into the part of the contact area 47 provided by the projection 52.

The sliding section 48 can also be referred to as a reinforcement of the front face of the saw blade cover. The saw blade cover can also be referred to as a protective device. The sliding section 48 is expediently a strip made of a hard material that is attached to the protective device so that the front face - in particular the contact area 47 - of the protective device can slide with the strip on a contact edge of a cut material of a workpiece to be processed. The sliding section 48 - for example the hard material strip - protects the front face of the protective device from being pinched (digging/notching) on the sharp contact edge of the cut material, which slides over the hard material strip as the cut material is guided into the cut.

Alternatively or additionally, a saw blade cover is also provided as an embodiment, the cover body of which is made entirely of metal, in particular aluminum. This saw blade cover is expediently designed as explained above, except for the aspect that the sliding section is not made of a second material but of the same material as the rest of the cover body.

Furthermore, a stop unit 50, in particular an angle stop, is provided for guiding and/or feeding a workpiece 11 to a saw blade 2 of a table saw.

The stop unit 50 provides an embodiment in itself and is in itself in the Figure 3 The stop unit 50 can also be provided as part of a table saw. The Figure 6 shows a corresponding table saw 20, which has a stop unit 50.

The stop unit 50 comprises a stop arm 55 extending in a longitudinal direction 54 for supporting the workpiece 11. In the Figure 6 the stop arm 55 is aligned with its longitudinal direction in the y-direction.

The stop arm 55 comprises a main section 51 made of a first material, which extends over more than half of the longitudinal extent of the stop arm 55. The feature "first material" mentioned here is a different feature than that mentioned above with respect to the The "first material" mentioned here in relation to the stop unit 50 may also be referred to as the "third material" or the "main section material" for the purpose of better differentiation.

The stop arm 55 further comprises at least one second end section 52 arranged at an end of the main section 51 located in the longitudinal direction 54. By way of example, the stop arm 55 comprises a second end section 52 at each of the two ends located in the longitudinal direction, so that the stop arm has two end sections 52.

The second end section 52 can come into contact with the saw blade 2 when a workpiece 11 is fed towards the saw blade 2. In particular, the stop unit 50 can be moved into a position in a state mounted on the support structure 12 of the table saw 20 in which the end section 52 comes into contact with the saw blade 2, in particular the cutting area of the saw blade 2. The at least one end section 52 is made of a second material that is different from the first material.

The "second material" feature mentioned here is a different feature than the "second material" feature mentioned above with respect to the saw blade cover 40. The "second material" mentioned here with respect to the stop unit 50 may also be referred to as "fourth material" or "end section material" for the purpose of better differentiation.

The second material differs from the first material. In particular, the second material has a different conductivity than the first material. Preferably a lower conductivity. For example, the first material is metal and/or the second material is plastic. The second material in particular has a different, preferably lower, electrical conductivity than the human body.

By providing the end section 52 made of the second material, it can be prevented that the above-mentioned safety function of the table saw 20 is triggered when the end section 52 comes into contact with the saw blade 2 (if it is present). The table saw 20 is expediently designed to carry out the safety function, in particular for stopping the saw blade 2 and/or for moving the saw blade 2 into a safety position, on the basis of an electrical property, in particular an electrical conductivity, of an object in contact with the saw blade 2. Preferably, the electrical property, in particular the electrical conductivity of the second material, is such that the table saw 20 does not carry out the safety function when the saw blade comes into contact with the end section 52.

Preferably, the electrical property, in particular the electrical conductivity of the first material, is such that the table saw 20 performs the safety function when the saw blade comes into contact with the first material.

The stop arm 55 is expediently designed in the form of a strip and can also be referred to as a guide strip. The stop arm 55 is aligned with its largest side - its long side - normal to a horizontal direction, expediently orthogonal to the support surface 8. The main section 51 of the Stop arm 55 expediently extends over more than 70% of the longitudinal extent of stop arm 55. Main section 51 is designed in the form of a strip and is aligned with its largest side orthogonal to support surface 8. The long sides of main section 51 are rectangular, for example. Main section 51 is expediently an extruded profile and is made in particular from metal.

In the longitudinal direction, an end section 52 adjoins both ends of the main section 51. Each end section expediently takes up less than 20% of the longitudinal extension of the stop arm 55. Each end section 52 expediently continues the transverse outer contour of the main section 51 in the longitudinal direction, so that the stop arm 55 as a whole results in a strip-shaped body with a constant thickness. Each end section 52 expediently has the same thickness as the main section 51. Expediently, the front side of each end section 52 located in the longitudinal direction of the stop arm 55 is bevelled. Each end section 52 is aligned with its largest side in terms of area - the long side - normal to the support surface 8. Due to the bevel on the respective front side, the long side of each end section 52 is, for example, triangular-shaped.

Each end section 52 is expediently attached to the main section 51 in a removable manner. For example, each end section 51 is inserted into and/or onto a front side of the main section 52. For example, each end section 52 is designed as a plastic cap. Each end section 52 is expediently attached to the main section 51 via a snap-in connection. For example, each end section 51 has a Locking element 62, which engages in a corresponding locking opening of the main section 51.

Each end section 52 can be conveniently removed from the main section 51 and replaced by a new, identically designed end section 52. Each end section 52 is conveniently a wearing part. In particular, each end section 52 can be attached and/or removed from the main section 51 without tools and/or without causing any damage.

The stop arm 55 expediently further comprises a cover layer 53, which is arranged on a long side of the stop arm 55. The cover layer 53 is arranged in particular on that long side of the stop arm 55 against which the workpiece 11 rests during the intended use of the stop unit 50. The cover layer 53 expediently covers the entire long side of the stop arm 55. The cover layer 53 can expediently be made of a material that does not trigger the above-mentioned safety function when in contact with the saw blade 2, i.e. in particular has a higher electrical conductivity than the human body and/or the main section 51.

The stop unit 55 further comprises a bearing section 67 with which the stop unit 55 can be movably mounted on the support structure 12 of the table saw 20. The bearing section 67 comprises a roller section 56 on which several rollers 57, 58 are arranged, via which the bearing section 67 can be movably mounted on the support structure 12.

The roller section 56 comprises, for example, a horizontal section 64 extending in a horizontal direction, on which a plurality of, for example two, vertically extending vertical sections 65 are arranged.

A plurality of rollers 57, 58 are arranged on each vertical section 65, for example two rollers per vertical section 65. Two of the rollers 57, 58 are expediently aligned in different spatial directions to one another, in particular orthogonally to one another. For example, each vertical section 65 comprises two rollers 57, 58 aligned in different spatial directions - for example, one horizontal roller 57 each, the roller plane of which is aligned parallel to a horizontal plane, and one vertical roller 58 each, the roller plane of which is aligned parallel to a vertical plane.

The roller section 56 expediently further comprises a sliding block 63. The sliding block 63 is in particular elongated and expediently arranged on the underside of the horizontal section 64.

The stop arm 55 is expediently mounted so as to be pivotable about a vertical pivot axis relative to the bearing section 67 via a pivot bearing 60. The pivot bearing 60 has, for example, an angle scale. The stop arm 55 is also expediently mounted so as to be linearly movable relative to the bearing section 67 via a linear bearing. For example, the stop unit 50 has a connecting section 59 which is elongated and preferably extends in a horizontal direction, in particular in a direction orthogonal to the longitudinal direction of the horizontal section 64. The stop arm 55 is expediently mounted so as to be linearly movable relative to the longitudinal direction of the horizontal section 64 via the Pivot bearing 60 is pivotably mounted on the connecting section 59 and the connecting section 59 is mounted on the bearing section 67 via the linear bearing so as to be linearly movable, in particular in the longitudinal direction of the connecting section 59. One or more operating elements are expediently present in order to lock and/or release the linear bearing, the pivot bearing 60 and/or the bearing of the bearing section 67 on the support structure.

The mounting of the stop unit 55 on the support structure 12 is shown as an example in the Figures 5 and 6 shown.

In particular, the support structure 12 of the table saw 20 has one or more guide elements 6 on which the bearing section 67 is or can be mounted. By way of example, each guide element 6 is arranged on a respective peripheral wall 5 of the support structure 12, in particular of the support section 1. Each peripheral wall is aligned normal to a horizontal direction. Each guide element 6 is expediently designed as a rail element running in the horizontal direction. By way of example, each guide element 6 provides a groove running in the horizontal direction, in particular a V-groove, into which the aforementioned sliding block 63 is inserted when the bearing section 67 is mounted on the support structure 12.

Each guide element 6 is expediently arranged offset downwards in the z-direction relative to the support surface 8. Each guide element 6 provides a respective linear guide path for the bearing section 67. The bearing section 67 can be removed from one guide element 6 and attached to another guide element 6, for example to another peripheral wall 5.

In the Figure 6 the stop unit 50 with its bearing section 67 is mounted, for example, on a peripheral wall 5 aligned perpendicular to the y-direction. The stop unit 50 can be moved linearly in the x-direction along the guide element 6 located on this peripheral wall 5. The stop arm 55 is located at least partially on or above the support surface 8 and can be positioned in its x-coordinate by the linear movement of the stop unit 50, in particular relative to the support section 1 and/or the saw blade 2.

The stop unit 50 can be removed from the peripheral wall 5 aligned normal to the y-direction and attached to a peripheral wall 5 aligned normal to the x-direction. There, the stop unit 50 can then be moved in the y-direction in order to position the stop arm 55 in its y-coordinate.

The Figure 6 shows a detailed view of the mounting of the bearing section 67 on the peripheral wall 5 and the guide element 6 of the support structure 12. The bearing section 67 is in engagement with the guide element 6. As an example, the sliding block 63 is inserted into the groove provided by the guide element 6. The vertical rollers 58 rest against the guide element 6 from below. The horizontal rollers 57 rest against the peripheral wall 5.

The guide of the stop unit 50 is therefore in a V-groove, which is not arranged (as is conventional) in the table top - for example the support surface 8 - but instead is arranged on the peripheral wall 5. Furthermore, the guide is carried out by means of rollers on the V-groove. In addition, there are expedient lateral rollers - the horizontal rollers - which counteract tilting. The rollers are rotatably mounted on the bearing section, which can also be referred to as the angle stop frame. The guide arm is attached to the frame of the angle stop (exemplarily via the connecting section), which lies on the support section, which can also be referred to as the saw table. The guide arm guides the workpiece to be machined. The guide arm is preferably adjustable in relation to the cutting plane at any angle in the range +/- 90°. At this angle it is possible to attach it to the angle stop frame and at this angle to guide and/or push the material into the cutting area of the saw blade. The angle of rotation of the guide arm can be read on the angle scale, which is part of the angle stop.

The guide arm (which can also be referred to as a guide bar) has protective caps attached to the ends which prevent a safety function, in particular an "Active Injury Mitigation" (AIM) function, from being triggered when sawing. The AIM function can also be referred to as an active injury reduction function.

The following shall be considered with reference to the Figures 2 , 7 and 8 a table saw 30 will be explained, which provides a further embodiment. The table saw 30 is expediently designed like one of the table saws explained above.

The table saw 30 comprises the support structure 12 with the support section 1, which provides the support surface 8 for supporting the workpiece 11, and the saw blade 2, which extends through the opening of the support section 1, so that at least a part of the saw blade 2 is located below the support section underside 14. The table saw 30 further comprises a housing arrangement 80 located below the support section underside 14, which surrounds the part of the saw blade 2 located below the support section underside 14. The saw blade 2 can be pivoted together with the housing arrangement 80 relative to the support section 1 in order to set an angle between a cutting plane of the saw blade 2 and the support surface 8.

The table saw 30 comprises a cover flap 87 which covers a gap between the housing arrangement 80 and the support section underside 14 which is created when the housing arrangement 80 is pivoted, in order to prevent a user of the table saw 30 from being able to reach through the gap to the part of the saw blade 2 located below the support section underside 14.

In the Figures 7 and 8 a section of the support section underside 14 and an adjusting section 3 located thereon is shown. As already explained above, the adjusting section 3 serves to pivot the saw blade 2 about a horizontal pivot axis, in particular a pivot axis running in the x-direction. The adjusting section 3 comprises a bearing section 81 arranged on the support structure 12, in particular the support section underside 14, and a pivot section 82 which is pivotably mounted relative to the bearing section 81 about the said pivot axis. The pivot axis is defined by way of example by a guide section 94 present on the bearing section 81, in particular a guide slot, on which the pivot section 82 is guided.

The Figure 7 shows the pivot section 82 in a normal position in which the pivot section 82 is not is pivoted and is aligned orthogonally to the support section underside 14.

The Figure 8 shows the pivoting section 82 in a pivoting position in which the pivoting section 82 is pivoted and is not aligned orthogonally to the support section underside 14.

The pivoting section 82 comprises, by way of example, the housing arrangement 80, the saw blade 2 and expediently the drive unit 86. The drive unit 86 and the saw blade 2 are preferably mounted so as to be linearly movable relative to the housing arrangement 80 in order to adjust how far the saw blade 2 protrudes from the opening in the support surface 8.

The housing arrangement 80 comprises, by way of example, a housing shell 83, the largest side in terms of area of which, hereinafter also referred to as the lateral side 85, is aligned normal to the y-direction in the normal position. The housing shell 83 further comprises an upper side 84 aligned orthogonally to the lateral side 85, which is aligned parallel to the support section underside 14 in the normal position of the pivot section 82. The housing shell 83 further comprises a transverse side 93 aligned orthogonally to the lateral side 85 and orthogonally to the upper side 84, which is expediently aligned normal to the x-direction.

The cover flap 87 is expediently made of a rigid material, preferably metal. The cover flap 87 is expediently designed as a cover plate. The cover flap 87 comprises a plate-shaped cover section 88. The cover flap 87 is elongated and aligned with its longitudinal direction in the x-direction.

The cover flap 87 is mounted, for example, on the housing arrangement 80, in particular on the transverse side 93, and on the support structure, in particular on the support section underside 14. For example, the cover flap 87 comprises a first fastening section 89, which is expediently designed as a tab, and is pivotably mounted on the housing shell 83, in particular the transverse side 93, via the first fastening section 89. According to the invention, the cover flap 87 comprises a second fastening section 91, with which the cover flap 87 is expediently mounted in a linearly movable manner on the support structure 12, in particular a guide slot 92. According to the invention, the second fastening section 91 is an edge region of the cover flap 87. The guide slot 92 is expediently an intermediate space between the support section underside 14 and another element of the support structure 12. Alternatively, the second fastening section 91 can also be firmly attached to the support structure 12.

By way of example, the cover flap 87 can be moved from a first position to a second position by pivoting the pivot section 82, in particular the housing arrangement 80. In particular, the cover flap 87 is pivoted from the first position to the second position by pivoting the pivot section 82 from the normal position to the pivot position. In the first position, the cover flap 87 is aligned parallel to the support section underside 14. In the first position, the cover flap 87 is expediently at least partially between the upper side 84 and the support section underside 14. In the second position, the cover flap 87 is aligned inclined about a horizontal axis, in particular the x-axis, to the support section underside 14.

The cover flap 87 is expediently mounted on the housing arrangement 80 and the support structure 12 in such a way that the cover flap 87 is pivoted by pivoting the housing arrangement 80 in the opposite direction to the pivoting movement of the housing arrangement 80.

The support structure 12 expediently has several legs 7, by means of which the support section 1 can be supported against the ground. There are free areas between the legs 7 through which a user can reach under the underside 14 of the support section.

The housing arrangement 80 and the cover flap 87 thus provide a cover device that covers the saw blade 2 so that the user cannot touch the saw blade 2 under the table. The cover device can also be referred to as a side saw blade cover. The saw blade 2 is adjustable in angle and height. The side saw blade cover consists of several parts that conveniently cover the saw blade in all positions of the adjustable range and prevent a finger from penetrating the saw blade under the table.

Furthermore, an accessory mounting structure 100 is provided. The accessory mounting structure 100 is shown in the Figure 9 unequipped and in the Figure 10 shown equipped with accessories. The accessory mounting structure 100 can be provided on its own or as part of a table saw, in particular one of the table saws 10, 20, 30 described above.

The accessory fastening structure 100 is expediently fastened to the support section underside 14 and extends vertically downwards from the support section underside 14. The accessory fastening structure 100 is essentially plate-shaped and is aligned with its plate plane normal to a horizontal direction, for example normal to the y-direction. The accessory fastening structure 100 comprises a plurality of interfaces to which accessory elements for the table saw can be fastened, in particular accessory elements that are not currently in use. The accessory fastening structure 100 is used in particular for storing the accessory elements. In the fastened state, the accessory elements are expediently freely accessible from the outside and can preferably be removed from the accessory fastening structure 100 without tools.

By way of example, the accessory fastening structure 100 has one, several or all of the following interfaces: a first interface 101, comprising in particular a locking hook, for fastening a push stick 105, a second interface 102, comprising in particular a locking hook, for fastening the stop unit 50, a third interface 103, comprising in particular a locking hook, for fastening the riving knife 9, a fourth interface 104, comprising in particular a locking hook, for fastening a work center, for example a replacement cartridge, in particular for the safety function, and/or a fifth interface for fastening the saw blade cover.

The accessory mounting structure 100 is preferably used for the safe storage of the accessory elements on the table saw. For this purpose, the interfaces mentioned on the accessory mounting structure 100. The interfaces expediently have fixing elements. Preferably, the accessory fastening structure 100 allows the user to easily remove the push stick 105 from the front side of the table saw aligned normal to the x-direction.

The bag is attached to the table top with a screw and there is a side snap fastener to reduce horizontal movement.

Furthermore, a suction plate 130 is provided. The suction plate 130 is in the Figure 11 unequipped and in the Figure 12 shown equipped with accessories. The suction plate 130 can be provided on its own or as part of a table saw, in particular one of the table saws 10, 20, 30 described above. The suction plate 130 is expediently arranged below the support section underside 14 and at least partially surrounds the saw blade 2. The suction plate 130 comprises a suction connection 131 to which a suction hose can be attached for sucking away dust generated during sawing.

Advantageously, the suction plate 130 comprises, on its side facing away from the saw blade 2, a first interface 141 for a replacement saw blade 142 as well as further interfaces for fastening accessory elements 135, in particular tools for assembling and disassembling the saw blade 2, 142 and the expansion wedge and/or riving knife 9. Preferably, at least one accessory element 135 represents a part of the first interface 141.

In the present suction plate, which can also be referred to as a suction hood, the function of the suction plate is extended in that the suction plate also serves as Spare blade holder and for storing the tools for assembling and disassembling the saw blade and the expansion wedge.

Claims (14)

1. Bench saw (30), comprising a support structure (12) with a lay-on section (1) which provides a lay-on surface (8) for the laying-on of a workpiece (11), as well as a saw blade (2) which engages through an opening of the lay-on section (1), so that at least a part of the saw blade (2) is located below the lay-on section lower side (14), further comprising a housing arrangement (80) which is located below the lay-on section lower side (14) and which surrounds the part of the saw blade (2) which is located below the lay-on section lower side (14), wherein the saw blade (2) is pivotable together with the housing arrangement (80) relative to the lay-on section (1), in order to adjust an angle between a cutting plane of the saw blade (2) and the lay-on surface (8), wherein the bench saw further comprises a cover flap (87) which covers a gap between the housing arrangement (80) and the lay-on section lower side (14), said gap arising on pivoting the housing arrangement (80), in order to thus prevent a user of the bench saw from being able to grip through the gap towards the saw blade, characterized in that the cover flap (87) comprises a fastening section (91), with which the cover flap (87) is expediently linearly movably mounted on the support structure (12), in particular a guide slot (92), wherein the fastening section (91) is an edge region of the cover flap (87).
2. Bench saw (30) according to claim 1, wherein the cover flap (87) is movably mounted on the housing arrangement (80) and/or the support structure (12).
3. Bench saw (30) according to claim 1 or 2, wherein the cover flap (87) can be brought from a first position into a second position by way of pivoting the housing arrangement (80).
4. Bench saw (30) according to claim 3, wherein the cover flap (87) in the first position is aligned essentially parallel to the lay-on surface (8) and/or in the second position is aligned in a manner inclined to the lay-on surface (8) about a horizontal axis.
5. Bench saw (30) according to one of the preceding claims, wherein the support structure (12) comprises several stand legs (7), via which the lay-on section (1) can be supported with respect to a floor, and free regions, through which a user can grip below the lay-on section lower side (14) are present between the stand legs (7).
6. Bench saw (30) according to one of the preceding claims, wherein the cover flap (87) is mounted on the housing arrangement (80) and the support structure (12) in a manner such that by way of pivoting the housing arrangement (80), the cover flap (87) is pivoted in opposite directions to the pivoting movement of the housing arrangement (80).
7. Bench saw (30) according to one of the preceding claims, wherein the cover flap (7) is manufactured of a rigid material, preferably metal, and/or is designed as a cover plate.
8. Bench saw (30) according to one of the preceding claims, comprising an actuation section (3) which serves for pivoting the saw blade (2) about a horizontal pivot axis, wherein the actuation section (3) comprises a bearing section (81) which is arranged on the support structure (12), and a pivoting section (82) which is pivotably mounted relative to the bearing section (81) about a horizontal pivot axis and comprises the housing arrangement (80) and the saw blade (2)
9. Bench saw (30) according to claim (8), wherein the cover flap (87) is pivotable from a/the first position into a/the second position by way of the pivoting section (82) being pivoted from a normal position into a pivoting position.
10. Bench saw (30) according to claim 9, wherein the pivoting section (82) in the normal position is aligned orthogonally to the lay-on section lower side (14) and/or in the pivoting position is aligned non-orthogonally to the lay-on section lower side (14).
11. Bench saw (30) according to claim 9 or 10, wherein the housing arrangement (80) comprises a housing shell (83) which comprises an upper side (84) which in the normal position of the pivoting section (82) is aligned parallel to the lay-on section lower side (14).
12. Bench saw (30) according to claim 11, wherein the cover flap (87) in the first position is arranged at least partly between the upper side (84) and the lay-on section lower side (14).
13. Bench saw (30) according to a preceding claim, wherein the fastening section (91) is a second fastening section (91) and wherein the cover flap (87) comprises a first fastening section (89) which is expediently designed as a tab and is pivotably mounted on a/the housing shell (83) of the housing arrangement (80) via the first fastening section (89).
14. Bench saw (30) according to a preceding claim, wherein the guide slot (92) is an intermediate space between the lay-on section lower side (15) and a further element of the support structure (12).

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