SE1550698A1 - Driving device and magazine for single-leg cable clamp - Google Patents

Driving device and magazine for single-leg cable clamp Download PDF

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Publication number
SE1550698A1
SE1550698A1 SE1550698A SE1550698A SE1550698A1 SE 1550698 A1 SE1550698 A1 SE 1550698A1 SE 1550698 A SE1550698 A SE 1550698A SE 1550698 A SE1550698 A SE 1550698A SE 1550698 A1 SE1550698 A1 SE 1550698A1
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SE
Sweden
Prior art keywords
magazine
driving
slot
driving device
clamp
Prior art date
Application number
SE1550698A
Other languages
Swedish (sv)
Other versions
SE540820C2 (en
Inventor
Torgeir Bråtane
Thorbjørn Drage
Tore Fidje
Roger Iskow Bach
Original Assignee
Letti As
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Letti As filed Critical Letti As
Publication of SE1550698A1 publication Critical patent/SE1550698A1/en
Publication of SE540820C2 publication Critical patent/SE540820C2/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/146—Clip clamping hand tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/02—Hand-held nailing tools; Nail feeding devices operated by manual power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C5/00—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor
    • B25C5/06—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor without provision for bending the ends of the staples on to the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C5/00—Manually operated portable stapling tools; Hand-held power-operated stapling tools; Staple feeding devices therefor
    • B25C5/16—Staple-feeding devices, e.g. with feeding means, supports for staples or accessories concerning feeding devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B1/00—Devices for securing together, or preventing relative movement between, constructional elements or machine parts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/30—Installations of cables or lines on walls, floors or ceilings
    • H02G3/32—Installations of cables or lines on walls, floors or ceilings using mounting clamps
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/36—Installations of cables or lines in walls, floors or ceilings

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Clamps And Clips (AREA)
  • Processing Of Terminals (AREA)
  • Insertion, Bundling And Securing Of Wires For Electric Apparatuses (AREA)

Abstract

A driving device (1) for driving a single-leg cable clamp (2) into a substructure. The driving device (1) comprises a housing (3) comprising attachments means (4) for attachment of a magazine (5a, 5b) for cable clamps. The housing (3) further comprises an elongate driving slot (6) provided with an entry opening (8) through which a cable clamp is movable to enter the driving slot (6) driving slot (6), and an exit opening (9) through which the cable clamp (2) is movable to exit the driving device (1). The driving device (1) further comprises a drive means (7) guided relative to the housing (3) for movement within the driving slot (6) along a first longitudinal axis (A), back and forth between a lower position in which the drive means (7) at least partially blocks the entry opening (8) of the driving slot (6) such that a cable clamp (2) cannot pass through the entry opening (8) into the driving slot (6), and an upper position in which the drive means (7) is positioned to allow entry of a cable clamp (2) through the entry opening (8) into the driving slot (6) . Further, the drive means (7) is provided with cams (10) on opposite sides of the drive means (7) and along at least a portion of the length of the drive means (7). The cams (10) are provided with respective lower portions (12) gradually increasing in width into upper wider portions (13). The housing (2) along its driving slot (6) is provided with first lateral recesses (11) for allowing the cams (10) to travel back and forth along with the drive means (7) without conflicting with the housing (2). The housing (2) is provided, adjacent the entry opening (8), with second recesses (14) respectively extending from the respective first recesses (11) and past the entry opening (8) of the driving slot (6).Figur 2

Description

A well-known device ca pable for driving single~leg cable clamp is the Letti innslagsvertøy (Figs. 15) and 16, which exists in two different sizes, each capable of driving a respective size of cable clamp. A well-known device ca pable for driving single ~ leg cable clamp is the Letti innslagsvertøy (Figs. 15) and 16, which exists in two different sizes, each capable of driving a respective size of cable clamp.

A drawback of this device is that several different driving devices are needed in order to be able to drive all common sizes of cable clamps. A further drawback is that the devices cannot be used with a magazine and is thus not very quick to work with if many cable clamps have to be fastened.A drawback of this device is that several different driving devices are needed in order to be able to drive all common sizes of cable clamps. A further drawback is that the devices cannot be used with a magazine and is thus not very quick to work with if many cable clamps have to be fastened.

Another well-known device is the Letti Satt-Mag 30) (Fig. 17. The device is a battery powered magazine device designed to work with strips of 30) cable clamps connected side by side along a strip. A drawback of this device is that it required battery power to operate. Another drawback is that is large and wide, and thus not always suitable for use in very confined spaces, such as close to walls or in inner corners of less than 90) degrees angle.Another well-known device is the Letti Satt-Mag 30) (Fig. 17. The device is a battery powered magazine device designed to work with strips of 30) cable clamps connected side by side along a strip. A drawback of this device is that it required battery power to operate. Another drawback is that is large and wide, and thus not always suitable for use in very confined spaces, such as close to walls or in inner corners of less than 90) degrees angle.

A further known device capable ofdriving single-leg cable clamp is the Castor Klammerpistol (Figs. 18) and 19. The device is driven by hammer and comprises an integrated magazine, which can be refilled by insertion of cable clamps of the type shown in Fig. 14. The clamps for the Castor Klammerpistol comes pre-loaded in the form of a row of clamps stacked front-to-back with a plastic rod running centrally through the cutout in the heads of clamps, as shown in the lower portion of Fig. 19. The plastic rod is used to hold the clamps during insertion into the tool, where after the plastic rod is retracted out of the tool whilst manually holding back the row of clamps within the tool. A drawback ofthis device is that it cannot be used to drive clamps of the type depicted in Fig. 13) having a continuous hook surface. A further drawback is that the driving impact is applied on a very small surface area of the clamp, in the cutout above the leg, such that, depending of choice of surface treatment, the coating is damaged during driving of the clamp into an underlying surface. ln order to reduce the risk of damaging the coating, one may consider applying a higher number of less strong impacts to drive the clamp, but that has the disadvantage of being time consuming.A further known device capable of driving single-leg cable clamp is the Castor Klammerpistol (Figs. 18) and 19. The device is driven by hammer and comprises an integrated magazine, which can be refilled by insertion of cable clamps of the type shown in Fig 14. The clamps for the Castor Klammerpistol comes pre-loaded in the form of a row of clamps stacked front-to-back with a plastic rod running centrally through the cutout in the heads of clamps, as shown in the lower portion of Fig. 19. The plastic rod is used to hold the clamps during insertion into the tool, where after the plastic rod is retracted out of the tool whilst manually holding back the row of clamps within the tool. A drawback of this device is that it cannot be used to drive clamps of the type depicted in Fig. 13) having a continuous hook surface. A further drawback is that the driving impact is applied on a very small surface area of the clamp, in the cutout above the leg, such that, depending on choice of surface treatment, the coating is damaged during driving of the clamp into an underlying surface . In order to reduce the risk of damaging the coating, one may consider applying a higher number of less strong impacts to drive the clamp, but that has the disadvantage of being time consuming.

Summary An objective of the present invention is thus to mitigate or solve at least some of the above- identi?ed shortcomings.Summary An objective of the present invention is thus to mitigate or solve at least some of the above- identified shortcomings.

A specific objective is to provide an improved magazine type driving device which can operate to drive various sizes of single-leg cable clamps of the type with continuous hook surface, such that only one driving tool is needed for installing cables of varying size on various underlying surface materials.A specific objective is to provide an improved magazine type driving device which can operate to drive various sizes of single-leg cable clamps of the type with continuous hook surface, such that only one driving tool is needed for installing cables of varying size on various underlying surface materials.

A further objective is to provide a device capable of driving single-leg cable clamps, which are surface treated without damaging the treated surface.A further objective is to provide a device capable of driving single-leg cable clamps, which are surface treated without damaging the treated surface.

A further objective is to provide a magazine for such a driving device, which enables quick and easy loading of new clamps into the driving device and allows swift change back and forth between clamp types. 10 15 20 25 30 35 These and other objectives are achieved by a driving device, a magazine and a system respectively according to the invention as defined in the independent claims. Specific embodiments of the invention are defined in the dependent claims.A further objective is to provide a magazine for such a driving device, which enables quick and easy loading of new clamps into the driving device and allows swift change back and forth between clamp types. 10 15 20 25 30 35 These and other objectives are achieved by a driving device, a magazine and a system respectively according to the invention as defined in the independent claims. Specific embodiments of the invention are defined in the dependent claims.

According to an aspect, the driving device comprises a housing comprising attachments means for attachment of a magazine for cable clamps. The housing further comprises an elongate driving slot provided with an entry opening through which a cable clamp is movable to enter the driving slot, and an exit opening through which the cable clamp is mova ble to exit the driving device. The driving device further comprises a drive means guided relative to the housing for movement within the driving slot along a first longitudinal axis, back and forth between a lower position and an upper position. ln the lower position, the drive means at least partially blocks the entry opening of the driving slot such that a cable clamp cannot pass through the entry opening into the driving slot. ln the upper position, the drive means is positioned to allow entry of a cable clamp through the entry opening into the driving slot. The drive means is provided with cams on opposite sides of the drive means and along at least a portion ofthe length of the drive means. The cams are provided with respective lower portions gradually increasing in width into upper wider portions.According to an aspect, the driving device comprises a housing comprising attachments means for attachment of a magazine for cable clamps. The housing further comprises an elongate driving slot provided with an entry opening through which a cable clamp is movable to enter the driving slot, and an exit opening through which the cable clamp is mova ble to exit the driving device. The driving device further comprises a drive means guided relative to the housing for movement within the driving slot along a first longitudinal axis, back and forth between a lower position and an upper position. In the lower position, the drive means at least partially blocks the entry opening of the driving slot such that a cable clamp cannot pass through the entry opening into the driving slot. In the upper position, the drive means is positioned to allow entry of a cable clamp through the entry opening into the driving slot. The drive means is provided with cams on opposite sides of the drive means and along at least a portion of the length of the drive means. The cams are provided with respective lower portions gradually increasing in width into upper wider portions.

The housing is along its driving slot provided with first lateral recesses for allowing the cams to travel back and forth along with the drive means without conflicting with the housing. The housing is provided, adjacent the entry opening, with second recesses extending from the respective first recesses and past the entry opening of the driving slot.The housing is along its driving slot provided with first lateral recesses for allowing the cams to travel back and forth along with the drive means without conflicting with the housing. The housing is provided, adjacent to the entry opening, with second recesses extending from the respective first recesses and past the entry opening of the driving slot.

A driving device provided with such a drive means is advantageous, since it enables operation of the drive means back and forth between the upper and lower positions to directly control operation of a locking mechanism provided partially outside the driving slot, since there is room for extended portions of the locking mechanism to extend from outside the driving slot and past the entry opening through the second recesses to the first recesses, in order to be moved by the cams for operation of the locking mechanism. Providing the locking mechanism at least partially outside the driving slot allows the locking mechanism to be integrated in a magazine detachable from the driving device, which in turn makes is possible to make specific magazines for specific clamp designs, and at the same time adapt each locking mechanism to the specific clamp type served by the magazine. Also, the claimed driving device enables a robust design with few moving parts. ln an embodiment, the locking mechanism is operable between an open position and a locking position depending on the position of the drive means along the longitudinal axis ofthe driving slot ofthe driving device. Further, the locking mechanism is configured in its locking position to prevent one or more clamps in a magazine from advancing from outside the driving slot towards the entry opening ofthe driving slot, and in its open position to allow said one or more clamps to advance towards the entry opening of the driving slot. ln an embodiment, the driving slot is forwardly open and provided with a front member extending along the driving slot for forwardly delimiting the driving slot. A lower portion of said front 10 15 20 25 30 35 member is movably attached to the housing by means of an excenter mechanism such that the front depth of the driving slot is adjustabie by adjustment of the excenter mechanism. The adjustable front depth enabies the driving device to be used with cabie ciamps of varying depth.A driving device provided with such a drive means is advantageous, since it enables operation of the drive means back and forth between the upper and lower positions to directly control operation of a locking mechanism provided partially outside the driving slot, since there is room for extended portions of the locking mechanism to extend from outside the driving slot and past the entry opening through the second recesses to the first recesses, in order to be moved by the cams for operation of the locking mechanism. Providing the locking mechanism at least partially outside the driving slot allows the locking mechanism to be integrated in a magazine detachable from the driving device, which in turn makes it possible to make specific magazines for specific clamp designs, and at the same time adapt each locking mechanism to the specific clamp type served by the magazine. Also, the claimed driving device enables a robust design with few moving parts. In an embodiment, the locking mechanism is operable between an open position and a locking position depending on the position of the drive means along the longitudinal axis of the driving slot of the driving device. Further, the locking mechanism is configured in its locking position to prevent one or more clamps in a magazine from advancing from outside the driving slot towards the entry opening ofthe driving slot, and in its open position to allow said one or more clamps to advance towards the entry opening of the driving slot. ln an embodiment, the driving slot is forwardly open and provided with a front member extending along the driving slot for forwardly delimiting the driving slot. A lower portion of said front 10 15 20 25 30 35 member is movably attached to the housing by means of an excenter mechanism such that the front depth of the driving slot is adjustabie by adjustment of the excenter mechanism. The adjustable front depth enabies the driving device to be used with cabie ciamps of varying depth.

Thus, the same driving device can be used for instaiiing a iarger variety of cables. Making the driving siot forwa rdly open makes it possibie to provide the front member in front ofthe driving device, such that other portions of the driving device, and especialiy those adiacent the entrance opening of the magazine, can be made rigid with no requirements of adjustabiiity. This provides for a robust design with few moving parts. in an embodirnent, a magnet, referred to as first magnet, is provided in a back waii of the driving slot ciose to a lower portion of the entry opening. Such a position of the first magnet ena bies the driving device to attract the tip of the ieg of a foremost cable ciarnp in a magazine attached to the driving device to thereby at ieast guide the leg within the driving slot and also assist in moving the cable clamp out of the magazine and into the driving slot. in an embodiment a pluraiity of maghets referred to as second magnets, are provided in a back waii of the driving siot and distributed aiong the iength of the driving siot between the entry opening and the exit opening of the driving siot. Such an arrangement of magnets enabies the driving device to attract the ieg of a ca ble ciamp in the driving slot to guide it sideways in order to keep it correctiy positioned within the driving slot during its travel through the driving slot and into the substructure. incorrect aiignment of the cable clamp wouid iead to excessive wear ofthe driving device and may lead to wrongly installed cabie ciamps.Thus, the same driving device can be used for instaiiing a iarger variety of cables. Making the driving siot forwa rdly open makes it possibie to provide the front member in front ofthe driving device, such that other portions of the driving device, and especialiy those adiacent the entrance opening of the magazine, can be made rigid with no requirements of adjustabiiity . This provides for a robust design with few moving parts. in an embodirnent, a magnet, referred to as first magnet, is provided in a back waii of the driving slot ciose to a lower portion of the entry opening. Such a position of the first magnet ena bies the driving device to attract the tip of the ieg of a foremost cable ciarnp in a magazine attached to the driving device to thereby at ieast guide the leg within the driving slot and also assist in moving the cable clamp out of the magazine and into the driving slot. in an embodiment a pluraiity of maghets referred to as second magnets, are provided in a back waii of the driving siot and distributed aiong the iength of the driving siot between the entry opening and the exit opening of the driving siot. Such an arrangement of magnets enabies the driving device to attract the ieg of a ca ble ciamp in the driving slot to guide it sideways in order to keep it correctiy positioned within the driving slot during its travel through the driving slot and into the substructure. incorrect aiignment of the cable clamp wouid iead to excessive wear ofthe driving device and may lead to incorrectly installed cabie ciamps.

According to an aspect, a magazine for cabie ciamps comprises an eiongate body provided with a iongitudinal guide slot for supporting a row of singie-leg cabie clamps in front-to-back arrangement within the elongate body and for aiiowing the row of cabie clamps to advance along the length of the guide siot towards an exit opening of the magazine provided at a front end of the magazine. The magazine is provided with a iocking mechanism comprising at least one pair of arms disposed on opposite iongitudinal sides of the guide siot. The arms are movable between a respective inner arm position and a respective outer arm position. The arms are provided with respective gripping means configured to partialiy block the guide slot in order to engage a cable clamp in the magazine from opposite sides when the arms are in their respective inner arm positions, in order to prevent the clamp from advancing towards the exit opening of the magazine.According to an aspect, a magazine for cabie ciamps comprises an eiongate body provided with an iongitudinal guide slot for supporting a row of singie-leg cabie clamps in front-to-back arrangement within the elongate body and for aiiowing the row of cabie clamps to advance along the length of the guide siot towards an exit opening of the magazine provided at a front end of the magazine. The magazine is provided with a iocking mechanism comprising at least one pair of arms disposed on opposite iongitudinal sides of the guide siot. The arms are movable between a respective inner arm position and a respective outer arm position. The arms are provided with respective gripping means configured to partialiy block the guide slot in order to engage a cable clamp in the magazine from opposite sides when the arms are in their respective inner arm positions, in order to prevent the clamp from advancing towards the exit opening of the magazine.

The respective gripping means are aiso configured to allow the cable clamp to move past the gripping means towards the exit opening ofthe magazine when the arms are in their respective outer arm positions. End portions of the arms protrucle in front of the exit opening of the magazine. Such a magazine is advantageous, since it has an integrated iocking mechanism, thus detachabie along with the magazine from the driving device. This makes is possible to taiior specific magazines for specific ciamp designs by adapting each iocking mechanism to the specific ciamp type served by the magazine. Further, since end portions of the arms protrude in front of the exit opening, the end portions are operable by cams swept past the magazine in front of its exit opening, thus enabiing operation of the iocking mechanism by arrangement of ca ms on 10 15 20 25 30 35 opposite sides of the drive means of a driving device to which the magazine is attacha ble. Hence, the same drive means and cams can be used independently of clamp type, meaning that only one driving device is needed for delivery of several different types of single-leg clamps of varying shape and size. Further, the claimed magazine is robust with few parts and also enabies a robust design of the driving device with few moving parts. ln an embodiment, a front portion ofthe magazine comprises a recessed portion inside ofthe exit opening for allowing a front most ciamp to move diagonally away from the row of clamps in a first direction substantiaily along the length of the leg of the front most clamp. This configuration of the magazine enables movement of the clamp in a direction substantially along the leg of the clamp and partialiy through the exit opening of the magazine. This in turn enables use of a magnet arranged close to the lower portion of the magazine for attracting the tip of the leg of the foremost clamp for moving the clamp out of the magazine and into driving position within the driving slot ready to be forced out of the driving slot by the drive means. l-lence, this configuration of the magazine enables use of a simple mechanism for moving the clamp out of the magazine by means of a magnet and without use of extra moving parts. lt should be understood that this configuration allows a magnet to attract the tip and the backside of the cable ciamp, and not a front portion of the clamp. Attracting the front portion of the cable clamp, at the head of the clamp, would not work well and would require much stronger magnetic field. Further, attracting the backside of the leg of the ciamp makes it possible to hold the leg ofthe cable clamp aligned along the back wall of the driving slot. ln an embodiment, guide ridges referred to as first guide ridges, extend along the guide slot for guiding clamps along the guide slot, wherein said first guide ridges end by the recessed portion a distance from the exit opening of the magazine. Second guide ridges extend from the first guide ridges diagonally substantially in the first direction towards a lower front portion of the magazine.The respective gripping means are aiso configured to allow the cable clamp to move past the gripping means towards the exit opening ofthe magazine when the arms are in their respective outer arm positions. End portions of the arms protrucle in front of the exit opening of the magazine. Such a magazine is advantageous, since it has an integrated iocking mechanism, thus detachable along with the magazine from the driving device. This makes is possible to taiior specific magazines for specific ciamp designs by adapting each iocking mechanism to the specific ciamp type served by the magazine. Further, since end portions of the arms protrude in front of the exit opening, the end portions are operable by cams swept past the magazine in front of its exit opening, thus enabiing operation of the iocking mechanism by arrangement of ca ms on 10 15 20 25 30 35 opposite sides of the drive means of a driving device to which the magazine is attacha ble. Hence, the same drive means and cams can be used independently of clamp type, meaning that only one driving device is needed for delivery of several different types of single-leg clamps of varying shape and size. Further, the claimed magazine is robust with few parts and also enabies a robust design of the driving device with few moving parts. ln an embodiment, a front portion ofthe magazine comprises a recessed portion inside ofthe exit opening for allowing a front most ciamp to move diagonally away from the row of clamps in a first direction substantially along the length of the leg of the front most clamp. This configuration of the magazine enables movement of the clamp in a direction substantially along the leg of the clamp and partialiy through the exit opening of the magazine. This in turn enables use of a magnet arranged close to the lower portion of the magazine for attracting the tip of the leg of the foremost clamp for moving the clamp out of the magazine and into driving position within the driving slot ready to be forced out of the driving slot by the drive means. l-lence, this configuration of the magazine enables use of a simple mechanism for moving the clamp out of the magazine by means of a magnet and without use of extra moving parts. lt should be understood that this configuration allows a magnet to attract the tip and the backside of the cable ciamp, and not a front portion of the clamp. Attracting the front portion of the cable clamp, at the head of the clamp, would not work well and would require much stronger magnetic field. Further, attracting the backside of the leg of the ciamp makes it possible to hold the leg ofthe cable clamp aligned along the back wall of the driving slot. ln an embodiment, guide ridges referred to as first guide ridges, extend along the guide slot for guiding clamps along the guide slot, wherein said first guide ridges end by the recessed portion a distance from the exit opening of the magazine. Second guide ridges extend from the first guide ridges diagonally substantially in the first direction towards a lower front portion of the magazine.

The second guide ridges provide improved stability for the foremost clamp when moving in the first direction through the exit opening ofthe magazine, by virtue of the second guide ridges giving support to left and right portions of the head ofa cable clamp moving along the second ridges. in an embodiment, a lower front portion ofthe magazine is provided with one or more third magnets oriented such that its magnetic field is able to attract the tip ofthe leg of a foremost clamp in the magazine to move the clamp out of the magazine. Such provision of one or more magnets in the magazine enables, as compared to providing magnets only in the driving device, customization of the position of magnets for each type of clamp to be supplied by the magazine, such that the magnetic effect for moving the foremost ciamp out ofthe magazine is tailored to the specific clamp design. Provision of magnets on the magazine does not per se exclude the provision of magnets for the same or similar purpose in a back wall of the driving slot of the driving device close to a lower portion of its entry opening. in an embodiment, the guide slot is provided with an elongate opening along at least a portion of the length ofthe magazine. The elongate opening enables access by an external arm to bias 10 15 20 25 30 35 ciamps towards the exit opening of the magazine. Such arm is typicaiiy integrated in the driving device as part of a biasing means for use with the magazine. Thus, the need of internai biasing means ofthe cable ciamp is avoided, effectively lowering cost, complexity and materiai use ofthe magazine. in an embodiment, the magazine is provided with a hiasing means for ioiasing a row of ciamps in the magazine towards the exit opening of the magazine. This may he advantageous if the driving device is not provided with a means for hiasing ciamps in the magazine towards the exit opening ofthe magazine. in an emhodiment, the magazine is comprises the row of singie-ieg cabie clamps stacked in front- to-back position within the guide siot of the magazine. Magazines comprising cable ciamps are prefera ble, since they aiiovv for quick dispensing of cahie ciamps without first having to fiii up the magazine with ciamps.The second guide ridges provide improved stability for the foremost clamp when moving in the first direction through the exit opening of the magazine, by virtue of the second guide ridges giving support to left and right portions of the head of a cable clamp moving along the second ridges. in an embodiment, a lower front portion of the magazine is provided with one or more third magnets oriented such that its magnetic field is able to attract the tip of the leg of a foremost clamp in the magazine to move the clamp out of the magazine. Such provision of one or more magnets in the magazine enables, as compared to providing magnets only in the driving device, customization of the position of magnets for each type of clamp to be supplied by the magazine, such that the magnetic effect for moving the foremost ciamp out ofthe magazine is tailored to the specific clamp design. Provision of magnets on the magazine does not per se exclude the provision of magnets for the same or similar purpose in a back wall of the driving slot of the driving device close to a lower portion of its entry opening. in an embodiment, the guide slot is provided with an elongate opening along at least a portion of the length ofthe magazine. The elongate opening enables access by an external arm to bias 10 15 20 25 30 35 ciamps towards the exit opening of the magazine. Such arm is typicaiiy integrated in the driving device as part of a biasing means for use with the magazine. Thus, the need of internai biasing means ofthe cable ciamp is avoided, effectively lowering cost, complexity and materiai use ofthe magazine. in an embodiment, the magazine is provided with a hiasing means for ioiasing a row of ciamps in the magazine towards the exit opening of the magazine. This may be advantageous if the driving device is not provided with a means for hiasing ciamps in the magazine towards the exit opening ofthe magazine. in an emhodiment, the magazine is comprises the row of singie-ieg cabie clamps stacked in front- to-back position within the guide siot of the magazine. Magazines comprising cable ciamps are prefera ble, since they aiiovv for quick dispensing of cahie ciamps without first having to fiii up the magazine with ciamps.

According to an aspect, a system comprising a driving device and a magazine according to any of the aspects above is provided. Such systern can be used to drive various sizes of singie-ieg cable ciamps of the type with continuous hooit surface, such that oniy one driving tooi is needed for instaiiing cahies of varying size on various underiying surface materiais. Surface treated ciamps can be driven without damaging the treated surface since the driving siot aiiows use of ciamps with continuous hook surface, which in turn provide a larger impact area for the driving tooi to cooperate with, effectiveiy distributing stress over a iarger area such that surface treatments, paints etc., does not crack or get damaged. Further, the system enabies quick and easy ioading of new ciamps into the driving device and ailows swift change back and forth between ciamp types, even with haif-fuil magazines. in an embodiment of the system, the driving device is provided with ieft and right resiiient members, such as biade springs, configured for biasing the respective ieft and right arms of the magazine, towards their iocking positions when the magazine is attached to the driving device.According to an aspect, a system comprising a driving device and a magazine according to any of the aspects above is provided. Such systern can be used to drive various sizes of singie-ieg cable ciamps of the type with continuous hooit surface, such that oniy one driving tooi is needed for instaiiing cahies of varying size on various underiying surface materiais. Surface treated ciamps can be driven without damaging the treated surface since the driving siot aiiows use of ciamps with continuous hook surface, which in turn provide a larger impact area for the driving tooi to cooperate with, effectivelyiy distributing stress over a iarger area such that surface treatments, paints etc., does not crack or get damaged. Further, the system enabies quick and easy ioading of new ciamps into the driving device and ailows swift change back and forth between ciamp types, even with haif-fuil magazines. in an embodiment of the system, the driving device is provided with ieft and right resiiient members, such as biade springs, configured for biasing the respective ieft and right arms of the magazine, towards their iocking positions when the magazine is attached to the driving device .

This enabies design of a iess rigid magazine with iess rigid arms, hence saying materiai, cost, and the environment, whiist stiii being abie to force the gripping means of the arms into the guide siot with enough force to ensure that ciamps are not unintentionaiiy forced past the gripping means.This enabies design of a iess rigid magazine with iess rigid arms, hence saying materiai, cost, and the environment, whiist stiii being abie to force the gripping means of the arms into the guide siot with enough force to ensure that ciamps are not unintentionaiiy forced past the gripping means.

Brief description of figures Figs. 1-8x show various views of a driving device according to an embodirnent of the invention.Brief description of figures Figs. 1-8x show various views of a driving device according to an embodiment of the invention.

More specificaiiy, Figs. 3x-8x show a sequence of steps of an initiai cycie of operation of the driving device for feeding a ciamp from the magazine and driving it out of the driving tool and into an underiying surface (not shown).More specificaiiy, Figs. 3x-8x show a sequence of steps of an initiai cycie of operation of the driving device for feeding a ciamp from the magazine and driving it out of the driving tool and into an underiying surface (not shown).

Fig. 1 is a perspective view the driving device ioaded with a magazine, with the rod in a fuiiy inserted position at the end of a driving stroke, and with a cabie ciamp driven by the rod. 10 20 25 30 35 Fig. 2 is an expioded perspective view from above.Fig. 1 is a perspective view of the driving device ioaded with a magazine, with the rod in a fuiiy inserted position at the end of a driving stroke, and with a cabie ciamp driven by the rod. 10 20 25 30 35 Fig. 2 is an expioded perspective view from above.

Figs, 3a-e show various views of the driving device in a first cycie step with the rod fuily retracted and ail ciamps iocked in the magazine by iocking means of locking arms ofthe magazine in a iociting position.Figs, 3a-e show various views of the driving device in a first cycie step with the rod fuily retracted and ail ciamps iocked in the magazine by iocking means of locking arms ofthe magazine in a iociting position.

Figs. 4a-e show various views of the driving device in a second cycie step with the rod fully inserted into the housing of the driving device. As best shown in Fig. 4e, cams of the rod forces apart opposite arms of the magazine into their respective open position in which the ciamps are free to advance in the magazine since the looking means no ionger stop the ciamps from advancing. A hiasing mechanism (spring not shown) forces the row of ciamps forward with the foremost clamp stoppad hy the rod and remaining cahie ciamps stopped by the first ciamp (and not by the looking means of the arms).Figs. 4a-e show various views of the driving device in a second cycie step with the rod fully inserted into the housing of the driving device. As best shown in Fig. 4e, cams of the rod forces apart opposite arms of the magazine into their respective open position in which the ciamps are free to advance in the magazine since the looking means no ionger stop the ciamps from advancing. A hiasing mechanism (spring not shown) forces the row of ciamps forward with the foremost clamp stoppad hy the rod and remaining cahie ciamps stopped by the first ciamp (and not by the looking means of the arms).

Figs. 5a-c show various views of the driving device in a third cycle step with the rod once again withdrawn. As shown, the cams ofthe rod are now withdrawn from the arms of the magazine, such that the arms are once again in their iocking position, preventing the remaining ciamps from advancing in the magazine. The tip of the leg of the foremost clamp is attracted by a magnet moving it in the direction D partially through the exit opening of the magazine.Figs. 5a-c show various views of the driving device in a third cycle step with the rod once again withdrawn. As shown, the cams of the rod are now withdrawn from the arms of the magazine, such that the arms are once again in their iocking position, preventing the remaining ciamps from advancing in the magazine. The tip of the leg of the foremost clamp is attracted by a magnet moving it in the direction D partially through the exit opening of the magazine.

Figs. 6a-c show various views of the driving device in a fourth cycle step with the rod still withdrawn enough to aiiow the foremost free clamp to continue its movement out of the exit opening of the magazine. As shown, the magnet positioned beiow the magazine attracts the tip of the clamp enough to rotate it out of the exit opening and make the clamp stay put against the inner wali of the exit slot.Figs. 6a-c show various views of the driving device in a fourth cycle step with the rod still withdrawn enough to aiiow the foremost free clamp to continue its movement out of the exit opening of the magazine. As shown, the magnet positioned beiow the magazine attracts the tip of the clamp enough to rotate it out of the exit opening and make the clamp stay put against the inner wali of the exit slot.

Figs. 7a-c show various views of the driving device in a fifth cycie step with the rod once again inserted further into the driving slot (6, driving the clamp towards the exit opening of the driving slot (6. Note that the rod is not yet inserted enough to move the arms to their respective open position.Figs. 7a-c show various views of the driving device in a fifth cycie step with the rod once again inserted further into the driving slot (6, driving the clamp towards the exit opening of the driving slot (6. Note that the rod is not yet inserted enough to move the arms to their respective open position.

Figs. Sa-e show various views of the driving device in a sixth cycie step simiiar to the fourth cycle step briefly described above with reference to Figs. 4a-e, but this time whilst having driven a clamp out ofthe exit opening. Similar to Fig. lie, cams ofthe rod forces apart opposite arms of the magazine into their respective open position in which the ciamps are free to advance in the magazine since the locking means no ionger stop the ciamps from advancing. The feeding mechanism (spring not shown forces the row of ciamps forward with the foremost ciamp stoppad by the rod and remaining cahie ciamps stopped by the first ciamp (and not by the locking means of the arms.Figs. Sa-e show various views of the driving device in a sixth cycie step simiiar to the fourth cycle step briefly described above with reference to Figs. 4a-e, but this time whilst having driven a clamp out ofthe exit opening. Similar to Fig. Lie, cams ofthe rod forces apart opposite arms of the magazine into their respective open position in which the ciamps are free to advance in the magazine since the locking means no ionger stop the ciamps from advancing. The feeding mechanism (spring not shown forces the row of ciamps forward with the foremost ciamp stoppad by the rod and remaining cahie ciamps stopped by the first ciamp (and not by the locking means of the arms.

Figs. 9a-g show different perspective views of a large version of the magazine, suitable for accommodating Letti 8025 cable ciamps (longer ciamps than Letti 8016). 10 15 Figs. IOa-g show different perspective views of a small version of the magazine, suitable for accommodating tetti 8016 cable clamps (shorter clamps than Letti 8025).Figs. 9a-g show different perspective views of a large version of the magazine, suitable for accommodating Letti 8025 cable ciamps (longer ciamps than Letti 8016). Figs. IOa-g show different perspective views of a small version of the magazine, suitable for accommodating tetti 8016 cable clamps (shorter clamps than Letti 8025).

The two emhodiments of the magazine, are functionaily the same hut are configured for being used with different clamps of different length.The two emhodiments of the magazine, are functionaily the same hut are configured for being used with different clamps of different length.

Table of reference numerals 1 driving duevice V _ l 19 second magnets 2 H cable clamp 20 guide slot ”_ 3 housing 21 row of cable clarnps 4 attachment means 22 exit opening of magazine Sa magazine - large 23 arms g Bb magazine - small 24 gripping means 6 driving slot 25 elongate opening 7 drive means H 26 i first guide ridges W _ 8 entry opening of driving slot 27 second guide ridges _ 9 exít opening of driving slot 28 elongate slot H 10 cams g 29 stop member 11 first recesses or spaces _ H i 30 straight central recess I 12 lower portions of carns l 31 _ central orotrusion of clamp head i 13 upper portions of carns 32 arm _, 14 second recesses or spaces V H33 guide slots for arm 15 front member 34 first set of recesses 16 _ excenter mechanism 35 second set of recesses 17 , first magnet 36 resilient members 18 i back wall Detailed description Embodiments of the invention will in the following be described with reference to the appended figures. it should be understood that terminology such as left and right, upper and lower, are used to designate relativa positions useful for understanding the design, and that the driving device according to embodiments of the invention can be used to drive cable clamps in anv orientation, such as upwards into a ceiling, sideways into a wall, or downwards into a floor or bench.Table of reference numerals 1 driving duevice V _ l 19 second magnets 2 H cable clamp 20 guide slot ”_ 3 housing 21 row of cable clarnps 4 attachment means 22 exit opening of magazine Sa magazine - large 23 arms g Bb magazine - small 24 gripping means 6 driving slot 25 elongate opening 7 drive means H 26 i first guide ridges W _ 8 entry opening of driving slot 27 second guide ridges _ 9 exit opening of driving slot 28 elongate slot H 10 cams g 29 stop member 11 first recesses or spaces _ H i 30 straight central recess I 12 lower portions of carns l 31 _ central orotrusion of clamp head i 13 upper portions of carns 32 arm _, 14 second recesses or spaces V H33 guide slots for arm 15 front member 34 first set of recesses 16 _ excenter mechanism 35 second set of recesses 17, first magnet 36 resilient members 18 i back wall Detailed description Embodiments of the invention will in the following be described with reference to the appended figures. it should be understood that terminology such as left and right, upper and lower, are used to designate relativa positions useful for understanding the design, and that the driving device according to embodiments of the invention can be used to drive cable clamps in anv orientation, such as upwards into a ceiling, sideways into a wall, or downwards into a floor or bench.

As shown in Figs 1 and 2, a driving device 1 according to a first ernbodiment of the invention comprises a housing 3 formed by a left and a right housing members 3a, Sh. The housing 3 is preferably made from injection molded plastics, although other suitable materials and 10 15 20 25 3G 35 manufacturing methods are possible within the scope of the invention. The left housing member 3a is attacha ble to the right housing member 3b by means of four screws shown in Fig. 2 as positioned in the left housing member 3a. When mounted together, the housing members 3a, 3b together form an elongate driving slot 6 provided with an entry opening 8 (see Figs. 3:: and 4c) through which a cable clamp 2 is movable to enter the driving slot 6, and an exit opening 9 through which the cable clamp 2 is movable to exit the driving device 1 for being driven into a substructure, such as a ceiling, wall or floor.As shown in Figs 1 and 2, a driving device 1 according to a first ernbodiment of the invention comprises a housing 3 formed by a left and a right housing members 3a, Sh. The housing 3 is preferably made from injection molded plastics, although other suitable materials and 10 15 20 25 3G 35 manufacturing methods are possible within the scope of the invention. The left housing member 3a is attacha ble to the right housing member 3b by means of four screws shown in Fig. 2 as positioned in the left housing member 3a. When mounted together, the housing members 3a, 3b together form an elongate driving slot 6 provided with an entry opening 8 (see Figs. 3 :: and 4c) through which a cable clamp 2 is movable to enter the driving slot 6, and an exit opening 9 through which the cable clamp 2 is movable to exit the driving device 1 for being driven into a substructure, such as a ceiling, wall or floor.

The housing 3 is provided with a portion (extending to the right in Fig 2) comprising means 4 for attaching the magazine Sa to the housing 3 in the form of a slot into which the magazine Sa, Bb can easily be inserted. in this embodiment, the slot into which the magazine 5a is insertable is provided with two sets of left and right recesses 34, 35 extending along a portion of the length of the slot for receiving the different size magazines Sa, Sb respectively in different positions.The housing 3 is provided with a portion (extending to the right in Fig 2) comprising means 4 for attaching the magazine Sa to the housing 3 in the form of a slot into which the magazine Sa, Bb can easily be inserted. in this embodiment, the slot into which the magazine 5a is insertable is provided with two sets of left and right recesses 34, 35 extending along a portion of the length of the slot for receiving the different size magazines Sa, Sb respectively in different positions.

The larger magazine shown together with the driving device 1 in Figs. 1-8c is provided on its outside with left and right ridges extending along a portion of the length of the magazine Sa for guiding the magazine Sa in the upper left and right recesses 34 of the slot 4 into which the magazine Sa is insertable. A smaller embodiment of the magazine Sh, for use with shorter clamps, is shown in Figs. 10a-g, The smaller magazine Sb is likewise insertable into the lower recesses 35 of the attachment means 4, and is also provided on its outside with left and right ridges extending along at least a portion of the length of the magazine 5b for guiding the magazine Eb in the left and right recesses 35 ofthe slot 4 into which the magazine Sb is insertable. The height ofthe upper left and right recesses 35 is smaller than the height of the lower left and right lower recesses 34. The height of the outer left and right ridges of the larger magazine Sa is low enough to fit into the upper recesses 34, and the height of the left and right outer ridges ofthe smaller magazine 5b is larger than the height of the upper left and right recesses 34, such that it cannot be inserted into the upper left and right recesses 34, but only into the lower left and right recesses 35. Thus, wrong insertion of smaller magazines Sb is prevented.The larger magazine shown together with the driving device 1 in Figs. 1-8c is provided on its outside with left and right ridges extending along a portion of the length of the magazine Sa for guiding the magazine Sa in the upper left and right recesses 34 of the slot 4 into which the magazine Sa is insertable. A smaller embodiment of the magazine Sh, for use with shorter clamps, is shown in Figs. 10a-g, The smaller magazine Sb is likewise insertable into the lower recesses 35 of the attachment means 4, and is also provided on its outside with left and right ridges extending along at least a portion of the length of the magazine 5b for guiding the magazine Eb in the left and right recesses 35 ofthe slot 4 into which the magazine Sb is insertable. The height of the upper left and right recesses 35 is smaller than the height of the lower left and right lower recesses 34. The height of the outer left and right ridges of the larger magazine Sa is low enough to fit into the upper recesses 34, and the height of the left and right outer ridges ofthe smaller magazine 5b is larger than the height of the upper left and right recesses 34, such that it cannot be inserted into the upper left and right recesses 34, but only into the lower left and right recesses 35. Thus, wrong insertion of smaller magazines Sb is prevented.

As will be further described, the magazines Sa, Eb are designed such that the tip ofthe leg of the foremost cable ciamp in each magazine, after having been released from the locking mechanism and advanced towards the drive means 7, is situated close to a lower forward portion of the magazine. Further, the magazines are configured to be insertable into a respective position with the bottom of the magazine Sa, 5b close to the bottom of the slot of the attachment means 4, such that the tio of the clamp is positioned at the same position in the driving device 1 independently of clamp size. This enables a first magnet 17 of the driving device 1 to attract the foremost clamp 2 out ofthe magazine inclependently of clamp size (see Figs. Sc and Ge).As will be further described, the magazines Sa, Eb are designed such that the tip ofthe leg of the foremost cable ciamp in each magazine, after having been released from the locking mechanism and advanced towards the drive means 7, is situated close to a lower forward portion of the magazine. Further, the magazines are configured to be insertable into a respective position with the bottom of the magazine Sa, 5b close to the bottom of the slot of the attachment means 4, such that the tio of the clamp is positioned at the same position in the driving device 1 independently of clamp size. This enables a first magnet 17 of the driving device 1 to attract the foremost clamp 2 out of the magazine inclependently of clamp size (see Figs. Sc and Ge).

The driving device 1 also comprises a drive means 7 in the form of an elongate metal rod with square cross-section and a rounded upper head suitable for being driven into the drive means 7 using a harnmer. Other materials and cross-sectional shapes can he used within the scope of the invention. The rod is guided relative to the housing 3 for movement within the driving slot 6 along 10 15 20 25 30 35 40 10 a first longitudinal axis A (see Figs. 3b and 3d, back and forth between a lower position (see Figs. 4a-e and 8a-c) in which the drive means 7 at least partially blocks the entry opening 8 of the driving slot 6 such that a cable clamp 2 cannot pass through the entry opening 8) into the driving slot 6, and an upper position in which the drive means 7 is positioned to allow entry of a cable clamp 2 through the entry opening 8 into the driving slot 6. Movement ofthe rod is limited by the provision of an elongate stop slot 28 on the front side of the rod 7, and a stop member 29 provided on a front member and extending into the elongate stop slot 28, said front member being attached to the housing 3. When the stop member 29 reaches its upper or lower extremes, the stop member 29 engages respective upper or lower end of the elongate stop slot 28. instead of an elongate stop slot 28 and stop member 29, some other means with the same functionality could be provided within the scope of the invention. However, the since the stop slot does not protrude from the rod, the rod can be withdrawn out of the housing 3 after the front member 17 has been moved away from the housing 3. The stop member 29 is optional and in other embodiments, the rod 7 may be freely movable out of the housing 3.The driving device 1 also comprises a drive means 7 in the form of an elongate metal rod with square cross-section and a rounded upper head suitable for being driven into the drive means 7 using a harnmer. Other materials and cross-sectional shapes can be used within the scope of the invention. The rod is guided relative to the housing 3 for movement within the driving slot 6 along 10 15 20 25 30 35 40 10 a first longitudinal axis A (see Figs. 3b and 3d, back and forth between a lower position (see Figs. 4a -e and 8a-c) in which the drive means 7 at least partially blocks the entry opening 8 of the driving slot 6 such that a cable clamp 2 cannot pass through the entry opening 8) into the driving slot 6, and an upper position in which the drive means 7 is positioned to allow entry of a cable clamp 2 through the entry opening 8 into the driving slot 6. Movement ofthe rod is limited by the provision of an elongate stop slot 28 on the front side of the rod 7, and a stop member 29 provided on a front member and extending into the elongate stop slot 28, said front member being attached to the housing 3. When the stop member 29 reaches its upper or lower extremes, the stop member 29 engages respective upper or lower end of the elongate stop slot 28. instead of an elongate stop slot 2 8 and stop member 29, some other means with the same functionality could be provided within the scope of the invention. However, since the stop slot does not protrude from the rod, the rod can be withdrawn out of the housing 3 after the front member 17 has been moved away from the housing 3. The stop member 29 is optional and in other embodiments, the rod 7 may be freely movable out of the housing 3.

The rod 7 is provided with left and right cams 10 extending along a portion of the length ofthe drive means 7. The cams 10 are provided with respective lower portions 12 gradually increasing in width along the length of the rod 7 into upper wider portions 13. The cams 10 are made from a suitable material, such as plastic or metal. The rod are fixed to the rod 7 by press-fitting into corresponding left and right recesses of the rod 7 but may in other embodiments be fixed to the dive means 7 in any suitable manner. The housing 3 is along the driving slot 6 provided with left and right, first recesses 11 shaped for allowing the cams 10 to travel back and forth along with the rod 7 without the cams touching the housing 3. The first recess 11 may be distinct from the driving slot 6, as shown, but may in other embodiments be part of the driving slot. Making the driving slot distinct from the first recesses may be advantageous, since it allows a tighter fit between drive means 7 and driving slot 6 such, effectively allowing better sideways guiding of a clamp moved through the driving slot 6. Further, the housing 3 is provided with left and right second recesses 14 extending from the respective first recesses 11 and past the entry opening 8 of the driving slot 6 from inside the driving slot 6, to outside the driving slot 6, such that an external object, such arms of a magazine, is movable into the first recesses 11 from outside the driving device 1. The second recesses 14 further function to provide space around the cams for objects protruding into the housing 3 through the entry opening 8 of the driving slot 6 to be moved by the cams 10, for example forced away from the drive means 7 from the first recesses 11 to the left and right sides respectively of the drive means 7. The objects protruding into the housing are typically forward portions of left and right arms 23 of a locking mechanism for controlling feed of clamps through the driving device 1 towards the entry opening of the driving slot 6. Such arms 23 are typically integrated with the magazine, but may in some embodiments instead be provided as part ofthe driving device 1. ln the illustrated embodiments, the second recessed 14 are The driving slot 6 is forwardly open (see Figs. 3a and 3c) and the driving device 1 is provided with a front member 15 extending along the driving slot 6 for forwardly delimiting the driving slot 6. A lower portion of said front member 15 is movably attached to the housing 3 by means ofan 10 15 20 25 3G 35 11 excenter mechanism 16 such that the front depth dl of the driving slot 6 (see Fig. 3ci is adjustable by turning an external arm of the excenter mechanism 16. The adjustable front depth of the driving slot 6 enables the driving device 1 to be used with cable clarnps of varying depth. lt should be understood that it would not always work well to provide an oversized driving slot, i.e. with a ?xed depth large enough to accommodate the largest clamp for which the driving device is to be used, since that smaller clamps would sometimes be driven obliquely into the underlying substructure. The depth adjustable driving slot 6 makes it possible to adapt the depth of the driving slot to closeiy match the depth of the clamp to be driven, thereby to provide a front wall of the driving slot for supporting the clamp when driven.The rod 7 is provided with left and right cams 10 extending along a portion of the length ofthe drive means 7. The cams 10 are provided with respective lower portions 12 gradually increasing in width along the length of the rod 7 into upper wider portions 13. The cams 10 are made from a suitable material, such as plastic or metal. The rod are fixed to the rod 7 by press-fitting into corresponding left and right recesses of the rod 7 but may in other embodiments be fixed to the dive means 7 in any suitable manner. The housing 3 is along the driving slot 6 provided with left and right, first recesses 11 shaped for allowing the cams 10 to travel back and forth along with the rod 7 without the cams touching the housing 3. The first recess 11 may be distinct from the driving slot 6, as shown, but may in other embodiments be part of the driving slot. Making the driving slot distinct from the first recesses may be advantageous, since it allows a tighter fit between drive means 7 and driving slot 6 such, effectively allowing better sideways guiding of a clamp moved through the driving slot 6. Further, the housing 3 is provided with left and right second recesses 14 extending from the respective first recesses 11 and past the entry opening 8 of the driving slot 6 from inside the driving slot 6, to outside the driving slot 6, such that an external object, such arms of a magazine, is movable into the first recesses 11 from outside the driving device 1. The second recesses 14 further function to provide space around the cams for objects protruding into the housing 3 through the entry opening 8 of the driving slot 6 to be moved by the cams 10, for example forced away from the drive means 7 from the first recesses 11 to the left and right sides respectively of the drive means 7. The objects protruding into the housing are typically forward portions of left and right arms 23 of a locking mechanism for controlling feed of clamps through the driving device 1 towards the entry opening of the driving slot 6. Such arms 23 are typically integrated with the magazine, but may in some embodiments instead be provided as part ofthe driving device 1. ln the illustrated embodiments, the second recessed 14 are The driving slot 6 is forwardly open (see Figs. 3a and 3c) and the driving device 1 is provided with a front member 15 extending along the driving slot 6 for forwardly delimiting the driving slot 6. A lower portion of said front member 15 is movably attached to the housing 3 by means ofan 10 15 20 25 3G 35 11 excenter mechanism 16 such that the front depth dl of the driving slot 6 (see Fig. 3ci is adjustable by turning an external arm of the excenter mechanism 16. The adjustable front depth of the driving slot 6 enables the driving device 1 to be used with cable clarnps of varying depth. Lt should be understood that it would not always work well to provide an oversized driving slot, ie with a? Xed depth large enough to accommodate the largest clamp for which the driving device is to be used, since that smaller clamps would sometimes be driven obliquely into the underlying substructure.The depth adjustable driving slot 6 makes it possible to adapt the depth of the driving slot to closeiy match the depth of the clamp to be driven, thereby providing a front wall of the driving slot for supporting the clamp when driven.

A first magnet 17 is provided in a back wall 18 of the driving slot 6 close to a lower portion of the entry opening 8 (see Fig. 2). Such a position of the first magnet 17 enables the driving device 1 to attract the tip of the leg of a forernost cable cla mp in a magazine attached to the driving device thereby to at least guide the leg within the driving slot 6, and also to assist in moving the cable clamp out ofthe magazine and into the driving slot. Further, a two second magnets 19 are provided in the back wall 18 ofthe driving slot 6 and are distributed along the length of the driving slot 6 in a straight line between the entry opening 8 and the exit opening 9 of the driving slot 6.A first magnet 17 is provided in a back wall 18 of the driving slot 6 close to a lower portion of the entry opening 8 (see Fig. 2). Such a position of the first magnet 17 enables the driving device 1 to attract the tip of the leg of a forernost cable cla mp in a magazine attached to the driving device thereby to at least guide the leg within the driving slot 6, and also to assist in moving the cable clamp out ofthe magazine and into the driving slot. Further, a two second magnets 19 are provided in the back wall 18 of the driving slot 6 and are distributed along the length of the driving slot 6 in a straight line between the entry opening 8 and the exit opening 9 of the driving slot 6.

The second magnets 18 attract the leg of a cable clamp 2 in the driving slot 6 to guide it sideways in order to keep it correctly positioned within the driving slot with a straight path of movement during its travel through the driving slot 6 and into the substructure. lncorrect alignment of the cable clamp 2 would lead to excessive wear of the driving device 1 and may lead to wrongly installed cable clamps 2. in this iliustrated embodirnent, a straight central recess 30 is provided along the back wall 18 of the driving slot for assisting in guiding the leg of a cable clamp, whilst the second magnets 18 attract the leg into the straight central recess 30. This recess is also for guiding a central protrusion 31 of the back of the clamp heads, shown in Figs. lla-j, especially in Fig. lll.The second magnets 18 attract the leg of a cable clamp 2 in the driving slot 6 to guide it sideways in order to keep it correctly positioned within the driving slot with a straight path of movement during its travel through the driving slot 6 and into the substructure . lncorrect alignment of the cable clamp 2 would lead to excessive wear of the driving device 1 and may lead to wrongly installed cable clamps 2. in this illustrated embodiment, a straight central recess 30 is provided along the back wall 18 of the driving slot for assisting in guiding the leg of a cable clamp, whilst the second magnets 18 attract the leg into the straight central recess 30. This recess is also for guiding a central protrusion 31 of the back of the clamp heads, shown in Figs. lla-j, especially in Fig. lll.

The driving device 1 is also provided with a biasing mechanism comprising an arm 32 an arm slidably guided in left and right guide slots 33 along which the arm 32 is forced forwards by a spring (not shown). The arm 32 is rotatabiy suspended in the guide slots 33 for rotation back and forth between an active position and an inactive position. in the active position, the arm 32 is folded into the slot of the attachment means 4 for extending into a magazine Sa, Sh, where the arm 32 is able to act for forcing clamps forward towards the exit opening 22 of the magazine Sa, Sh. in the inactive position, the arm 32 is folded backwards away from the guide slots 33 ofthe attachment means 4, such that rnagazines Sa, Sb can be inserted into and withdrawn from the driving device 1.The driving device 1 is also provided with a biasing mechanism comprising an arm 32 an arm slidably guided in left and right guide slots 33 along which the arm 32 is forced forwards by a spring (not shown). The arm 32 is rotatabiy suspended in the guide slots 33 for rotation back and forth between an active position and an inactive position. in the active position, the arm 32 is folded into the slot of the attachment means 4 for extending into a magazine Sa, Sh, where the arm 32 is able to act for forcing clamps forward towards the exit opening 22 of the magazine Sa, Sh . in the inactive position, the arm 32 is folded backwards away from the guide slots 33 of the attachment means 4, such that rnagazines Sa, Sb can be inserted into and withdrawn from the driving device 1.

A first ernbodiment of a magazine Sa for cable clamps 2 will now be described with reference to the appended drawings. The magazine Sa, shown for example in Figs. 9a-g, comprises an elongate body provided with a longitudinal guide slot 2G for supporting a row 21 of single-leg cable clamps in front-to-back arrangement within the eiongate body and for allowing the row 21 of cable clamps to advance along the length of the guide slot 20 towards an exit opening 22 of the magazine Sa. The exit opening 22 is provided at a front end of the magazine Sa, and is illustrated 10 15 20 25 30 35 12 with the plane P. As shown, the magazine Sa is not planar around the exit opening 22, but the plane P illustrates a plane in front of which the drive means 7 is free to pass in front of the exit opening 22 thereby to drive away a clamp 2, which clamp has moved out of the exit opening 22.A first ernbodiment of a magazine Sa for cable clamps 2 will now be described with reference to the appended drawings. The magazine Sa, shown for example in Figs. 9a-g, comprises an elongate body provided with a longitudinal guide slot 2G for supporting a row 21 of single-leg cable clamps in front-to-back arrangement within the eiongate body and for allowing the row 21 of cable clamps to advance along the length of the guide slot 20 towards an exit opening 22 of the magazine Sa. The exit opening 22 is provided at a front end of the magazine Sa, and is illustrated 10 15 20 25 30 35 12 with the plane P. As shown, the magazine Sa is not planar around the exit opening 22, but the plane P illustrates a plane in front of which the drive means 7 is free to pass in front of the exit opening 22 thereby to drive away a clamp 2, which clamp has moved out of the exit opening 22.

As shown in Fig. 9g, the exit opening 22 may be provided at an angle oi to the longitudinal axis AX of the magazine Sa, the angle al. The angle (11 is preferably chosen such that the plane P is substantially parallel with a frontal plane P2 through the tip and through the front most portion of the head on the first clamp of a row of clamps in the magazine Sa, as lllustrated in Fig. 3c. ln other words, the angle oi is chosen such that the exit opening 22 is parallel with the frontal plane P2 of the foremost clamp. This in turn makes it possible for the foremost clamp to be stoppad by the drive means 7 without excessive amount of free space around the clamp, thus without being able to move around between drive means 7 and second clamp in magazine Sa, something that could have led to risk ofjamming the magazine Sa or unwanted release of the second clamp.As shown in Fig. 9g, the exit opening 22 may be provided at an angle oi to the longitudinal axis AX of the magazine Sa, the angle al. The angle (11 is preferably chosen such that the plane P is substantially parallel to a frontal plane P2 through the tip and through the front most portion of the head on the first clamp of a row of clamps in the magazine Sa, as illustrated in Fig. .3c. Ln other words, the angle oi is chosen such that the exit opening 22 is parallel to the frontal plane P2 of the foremost clamp. This in turn makes it possible for the foremost clamp to be stopped by the drive means 7 without excessive amount of free space around the clamp, thus without being able to move around between drive means 7 and second clamp in magazine Sa, something that could have led to risk ofjamming the magazine Sa or unwanted release of the second clamp.

The magazine Sa is provided with a looking mechanism comprising at least one pair of arms 23 disposed on opposite longitudinai sides, i.e. the left a right sides respectively, ofthe guide slot 20.The magazine Sa is provided with a looking mechanism comprising at least one pair of arms 23 disposed on opposite longitudinal sides, i.e. the left a right sides respectively, ofthe guide slot 20.

The arms 23 are movable between a respective inner arm position (see Fig. Se) and a respective outer arm position (see Fig. 4e). Further, the arms 23 are provided with respective gripping means 24 in the form of cone shaped protrusions extending normally to each arm into the guide slot 20 to partially block the guide slot 20 in order to engage a cable clamp 2 in the magazine from opposite sides when the arms 23 are in their respective inner arm positions. The cone shaped protruslons 24 thus act to prevent a clamp 2 from advanclng past the gripping means 24 towards the exit opening 22 ofthe magazine Sa. The respective cone shapecl protrusions 24 are also configured to allow the cable clamp 2 to move past the cone shaped protrusions 24 towards the exit opening 22 ofthe magazine when the arms 23 are in their respective outer arm positions. in other emhodirnent, the gripping means could take other forms, such as rubber pads, metal tips, or simply a surface with large enough friction to allow gripping of clamps. End portions 25 of the arms 23 protrude in front ofthe exit opening 22 of the magazine Sa, as shown in Fig. 2. Further, opposite left and right blade Springs 36 are provided on the housing 3 for biasing the respective left and right arms 23 towards their looking positions. The provision of blade Springs, or similar resilient members 36 for biasing the arms 23 enables design ofa less rigid magazine with less rigid arms, hence saving material, cost, and the environment, whiist still being able to force the gripping means of the arms 23 into the guide slot 20 with enough force to ensure that clamps are not unintentionally forced past the gripping means 24.The arms 23 are movable between a respective inner arm position (see Fig. Se) and a respective outer arm position (see Fig. 4e). Further, the arms 23 are provided with respective gripping means 24 in the form of cone shaped protrusions extending normally to each arm into the guide slot 20 to partially block the guide slot 20 in order to engage a cable clamp 2 in the magazine from opposite sides when the arms 23 are in their respective inner arm positions. The cone shaped protruslons 24 thus act to prevent a clamp 2 from advanclng past the gripping means 24 towards the exit opening 22 ofthe magazine Sa. The respective cone shapecl protrusions 24 are also configured to allow the cable clamp 2 to move past the cone shaped protrusions 24 towards the exit opening 22 of the magazine when the arms 23 are in their respective outer arm positions. in other emhodirnent, the gripping means could take other forms, such as rubber pads, metal tips, or simply a surface with large enough friction to allow gripping of clamps. End portions 25 of the arms 23 protrude in front of the exit opening 22 of the magazine Sa, as shown in Fig. 2. Further, opposite left and right blade Springs 36 are provided on the housing 3 for biasing the respective left and right arms 23 towards their looking positions. The provision of blade Springs, or similar resilient members 36 for biasing the arms 23 enables design ofa less rigid magazine with less rigid arms, hence saving material, cost, and the environment, whiist still being able to force the gripping means of the arms 23 into the guide slot 20 with enough force to ensure that clamps are not unintentionally forced past the gripping means 24.

A front portion of the magazine Sa comprises a recessed portion inside of the exit opening 22 for allowing a front most clamp 2 to move diagonally away from the row of clamps in a first direction i) substantially along the length of the leg of the front most clamp 2, after having been released past the gripping means 24 ofthe locking mechanism, and thus after the drive means 7 has been moved such that it does not block the entry opening of the driving slot 6.A front portion of the magazine Sa comprises a recessed portion inside of the exit opening 22 for allowing a front most clamp 2 to move diagonally away from the row of clamps in a first direction i) substantially along the length of the leg of the front most clamp 2, after having been released past the gripping means 24 ofthe locking mechanism, and thus after the drive means 7 has been moved such that it does not block the entry opening of the driving slot 6.

The guide slot 20 of the magazine Sa is provided with an elongate opening 25 along the length of the magazine Sa through which an external arm 26 is moi/able for biasing a row of cable clamps 21 1G 13 towards the exit opening 22 of the magazine Sa. Such externa! arm 32 is provided as part ofthe ciamp biasing mechanism of the driving device 1 described above.The guide slot 20 of the magazine Sa is provided with an elongate opening 25 along the length of the magazine Sa through which an external arm 26 is moi / able for biasing a row of cable clamps 21 1G 13 towards the exit opening 22 of the magazine Sa. Such external! arm 32 is provided as part of the ciamp biasing mechanism of the driving device 1 described above.

The magazine may preterabiy be soid pre-ioaded with a row of single-leg cable ciamps stacked in front-to-back position within the guide siot ofthe magazine Sa, such that the craftsman fastening cable can quickiy ioad new ciamps into the driving device, simply by retracting an empty magazine from the driving device 1 and inserting a new magazine into the attachment means 4 of the driving device 1.The magazine may preterabiy be soid pre-ioaded with a row of single-leg cable ciamps stacked in front-to-back position within the guide siot ofthe magazine Sa, such that the craftsman fastening cable can quickiy ioad new ciamps into the driving device, simply by retracting an empty magazine from the driving device 1 and inserting a new magazine into the attachment means 4 of the driving device 1.

A first embodiment of a system according to the invention comprises the above described driving device 1 and magazine 5a.A first embodiment of a system according to the invention comprises the above described driving device 1 and magazine 5a.

Claims (13)

Claims
1. A driving device (1) for driving a single leg cable clamp (2) into a substructure, wherein the driving device (1) comprises a housing (3) comprising attachments means (4) for attachment of a magazine (5a, 5b) for cable clamps, said housing (3) further comprising an elongate driving slot (6) provided with an entry opening (8) through which a cable clamp is movable to enter the driving slot (6), and an exit opening (9) through which the cable clamp (2) is movable to exit the driving device (1), wherein the driving device (1) further comprises a drive means (7) guided relative to the housing (3) for movement within the driving slot (6) along a first longitudinal axis (A), back and forth between a lower position in which the drive means (7) at least partially blocks the entry opening (8) of the driving slot (6) such that a cable clamp (2) cannot pass through the entry opening (8) into the driving slot (6), and an upper position in which the drive means (7) is positioned to allow entry of a cable clamp (2) through the entry opening (8) into the driving slot (6), characterized in that the drive means (7) is provided with cams (10) on opposite sides of the drive means (7) and along at least a portion of the length of the drive means (7), wherein the cams (10) are provided with respective lower portions (12) gradually increasing in width into upper wider portions (13), wherein the housing (2) along its driving slot (6) is provided with first lateral recesses (11) for allowing the cams (10) to travel back and forth along with the drive means (7) without conflicting with the housing (2), and wherein the housing (2) is provided, adjacent the entry opening (8), with second recesses (14) extending from the respective first recesses (11) and past the entry opening (8) of the driving slot (6).
2. A driving device (1) according to claim 1, wherein the driving slot (6) is forwardly (FW) open and wherein the driving device is provided with a front member (15) extending along the driving slot (6) for forwardly delimiting the driving slot (6), wherein a lower portion of said front member (15) is movably attached to the housing (2) by means of an excenter mechanism (16) such that the front depth (dl) of the driving slot (6) is adjustable by adjustment of the excenter mechanism (16).
3. A driving device 1 according to any one of the preceding claims, further comprising a first magnet (17) provided in a back wall (18) of the driving slot (6) close to a lower portion of the entry opening (8).
4. A driving device 1 according to any one of the preceding claims, further comprising a plurality of second magnets (19) provided in a back wall (18) of the driving slot (6) and distributed along the length of the driving slot (6) between the entry opening (8) and the exit opening (9) of the driving slot (6).
5. A magazine (5a, 5b) for cable clamps (2) comprising an elongate body provided with a longitudinal guide slot (20) for supporting a row (21) of single-leg cable clamps in front-to-back arrangement within the elongate body and for allowing the row (21) of cable clamps to advance along the length of the guide slot (20) towards an exit opening (22) of the magazine (5a, 5b) provided at a front end of the magazine (5a, 5b), wherein the magazine (5a, 5b) is provided with a locking mechanism comprising at least one pair of arms (23) disposed on opposite longitudinal sides of the guide slot (20), 6wherein the arms (23) are movable between a respective inner arm position and a respective outer arm position, wherein the arms (23) are provided with respective gripping means (24) configured to partially block the guide slot (20) in order to engage a cable clamp (2) in the magazine from opposite sides when the arms (23) are in their respective inner arm positions, in order to prevent the clamp (2) from advancing towards the exit opening (22) of the magazine (5a, 5b), wherein the respective gripping means (24) are also configured to allow the cable clamp (2) to move past the gripping means (24) towards the exit opening (22) of the magazine when the arms (23) are in their respective outer arm positions, and wherein end portions (25) of the arms (23) protrude in front of the exit opening (22) of the magazine (5a, 5b).
6. A magazine according to claim 5, wherein a front portion of the magazine (5a, 5b) comprises a recessed portion inside of the exit opening (22) for allowing a front most clamp to move diagonally away from the row of clamps in a first direction (D) substantially along the length of the leg of the front most clamp (2).
7. A magazine according to claim 6, wherein first guide ridges (26) extend along the guide slot (20) for guiding clamps along the guide slot (20), wherein said first guide ridges (26) end by the recessed portion a distance from the exit opening (22) of the magazine, and wherein second guide ridges (27) extend from the first guide ridges (26) diagonally in the first direction (D) towards a lower front portion of the magazine (5a, 5b).
8. A magazine (5a, 5b) according to any one of claims 5-7, wherein a lower front portion of the magazine (5a, 5b) is provided with one or more third magnets oriented such that its magnetic field is able to attract the tip of the leg of a foremost clamp (2) in the magazine (5a, 5b) to move the clamp out of the magazine..
9. A magazine (5a, 5b) according to any one of claims 5-8, wherein the guide slot (20) is provided with an elongate opening (25) along the length of the magazine (5a, 5b) through which an external arm (26) is movable for biasing a row of cable clamps (21) towards the exit opening (22) of the magazine (5a, 5b).
10. A magazine (5a, 5b) according to any one of claims 5-8, provided with a biasing means for biasing a row of clamps (21) in the magazine (5a, 5b) towards the exit opening of the magazine (5a, 5b).
11. A magazine (5a, 5b) according to any one of claims 5-10, comprising the row (21) of single-leg cable clamps stacked in front-to-back position within the guide slot of the magazine (5a, 5b), 16
12. A system comprising a driving device according to any one of claims 1-4 and one or more magazines according to any one of claims 5-10.
13. A system according to claim 12, wherein the driving device (1) is provided with left and right resilient members (36), such as blade springs, configured for biasing the respective left and right arms (23) of the magazine, towards their locking positions when the magazine is attached to the driving device. 1 /1 2 (N (NI 3/12 5/12 17
SE1550698A 2014-06-11 2015-05-29 Driving device and magazine for single-leg cable clamp SE540820C2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO20140735A NO336912B1 (en) 2014-06-11 2014-06-11 Single leg cable clamp insert and magazine

Publications (2)

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SE1550698A1 true SE1550698A1 (en) 2015-12-12
SE540820C2 SE540820C2 (en) 2018-11-20

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Application Number Title Priority Date Filing Date
SE1550698A SE540820C2 (en) 2014-06-11 2015-05-29 Driving device and magazine for single-leg cable clamp

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FI (1) FI126962B (en)
NO (1) NO336912B1 (en)
SE (1) SE540820C2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO347225B1 (en) * 2021-11-15 2023-07-10 Letti As Clip hammer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO120277B (en) * 1967-05-08 1970-09-28 S Abrahamsen
JPH1148159A (en) * 1997-08-11 1999-02-23 Satoharu Takahashi Stapler for cord

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FI126962B (en) 2017-08-31
SE540820C2 (en) 2018-11-20
NO20140735A1 (en) 2015-11-23
NO336912B1 (en) 2015-11-23

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