WO2021249583A1

WO2021249583A1 - Hand tool clamping and operating device, and hand tool and hand tool clamping and operating device assembly

Info

Publication number: WO2021249583A1
Application number: PCT/CZ2021/050059
Authority: WO
Inventors: Lukáš Dorica
Original assignee: DD PNEU s.r.o.
Priority date: 2020-06-08
Filing date: 2021-06-03
Publication date: 2021-12-16
Also published as: CZ34190U1

Abstract

The device (1) for clamping and operating hand tools (19), namely an impact wrench or a drill or a screwdriver, consists of a carrier (9), a control mechanism, at least one switching mechanism. The carrier (9) is adapted for clamping hand tools (19). The control mechanism is connected to the carrier (9) for manual control of the movement of the hand tool (19). The switching mechanism connects the control mechanism and the carrier (9) and serves to ensure remote switching hand tools (19). The carrier (9) is provided with at least one clamping device for clamping hand tools (19). The control mechanism consists of a handlebar (2) and a rod (7), which are connected to each other. The switching mechanism consists of a manual switch mounted on the handlebar (2), an actuator (21) for controlling the function buttons of the hand tool (19) and a line (6).

Description

Hand tool clamping and operating device, and hand tool and hand tool clamping and operating device assembly

Field of the Invention

The invention relates to a hand tool clamping and operating device, and hand tool and hand tool clamping and operating device assembly. In this present solution, the hand tools are in particular impact wrenches or drills or screwdrivers. The hand tool clamping and operating device serves in particular to simplify the work of manually operating the hand tool, which together with the device forms the assembly in question.

Background of the Invention

Hand tools are used to simplify, streamline and mechanize activities associated with assembly, machining, tooling and repair operations and activities. This includes activities such as tightening nuts and bolts, screwing bolts, cutting and other similar workshop activities. To reduce the physical demands of these activities, involving the need to exert great physical force, even repeatedly, and to accelerate these activities, man manufactured and began to use first manually powered hand tools and later electrically, pneumatically or otherwise powered hand and machine tools.

These tools are used in households, small and large workshops, as well as in areas such as construction of buildings, bridges, railways, etc. While some activities and the associated manual craft operations are simplified with the tools, the problem of size and weight of these tools persists. This shortcoming is eliminated in some tools by providing them with carriers of the carrier technology type, which serve as a clamping and transport element at the same time. However, this technology may not get everywhere and its use is mostly single -purpose.

Classic hand tools are thus dependent on the carrying force of a person as the operator. The disadvantage is that the tool must be operated in squatting, forward bending or body bending position, when the transmission of weight and possible shocks or vibrations to the spinal system of the device operator is not optimal. Although working with hand tools facilitates some types of manual activities, on the other hand it causes fatigue of the spinal muscles, wear of the intervertebral discs and other similar fatigue effects of the locomotor, and especially the supporting system of the human body of the operator.

The object of the present invention is to eliminate the shortcomings of the known technical solutions by providing a hand tool clamping and operating device, which allows to operate the hand tool while standing without bending the spine, ideally with variable length adjustment of grip height and inclination. Simultaneously with the possibility of gripping and controlling in an upright position, the device must also enable remote operation of the switching functions of installed hand tools.

Summary of the Invention

The device for clamping and operating hand tools, such as an impact wrench or a drill or screwdriver, consists of three basic parts. These parts are the carrier, the control mechanism and at least one switching mechanism. The carrier is adapted for direct clamping of hand tools. The control mechanism is connected to the carrier and serves to manually control the movement of hand tools in a state where the hand tool is arranged in the carrier. The switching mechanism connects the control mechanism to the carrier, thus ensuring remote switching of the function of hand tools. In this embodiment of the invention, the carrier is provided with at least one clamping device for clamping hand tools. In this embodiment of the invention, the control mechanism consists of a handlebar and a rod which are connected to each other. In this embodiment of the invention, the switching mechanism consists of a manual switch mounted on the handlebar, an actuator for operating the function buttons of the hand tool arranged on the carrier and a line connecting the manual switch and the actuator and transmitting switching signals between the manual switch and the actuator.

In a preferred embodiment, the carrier is connected to the control mechanism in the lower part of the rod; in which case, this connection is rotatable and made by means of a joint. This joint is rotatable with one degree of freedom and forms the connecting part between the rod and the carrier, but is part of the rod, i.e. the control mechanism. In this preferred embodiment, the joint is provided with a locking lever which allows the set position of the joint to be fixed.

In another preferred embodiment, the carrier consists of an upper anchoring element, which is provided with a quick clamp and is fixed to the joint of the control mechanism. Furthermore, the carrier consists of a lower ring sleeve with a quick clamp connector. The fixed connection between the upper anchoring element and the lower ring sleeve forms an arm which forms another part of the carrier.

In the following preferred embodiment, the connection of the handlebar and the rod is designed to be detachable. This connection is formed by a clamping sleeve arranged at the same time in the middle of the handlebar and at the upper end of the rod.

In another preferred embodiment, the rod is designed to be telescopic and is provided with a locking sleeve providing fixed locking of the extension of the rod.

In another preferred embodiment, the handlebar is provided with rubber grips for more comfortable grip and absorption of the transmission of shocks and vibrations from the tool through the device to the operator.

In the following preferred embodiment, the manual switch is designed as a mechanical switching lever, where the line is formed by a control cable. In this preferred embodiment, the actuator for switching the function buttons of the tool is formed by a fixed cable arranged on the upper anchoring element. In this preferred embodiment, the control lever fits on the function button of the hand tool. In this preferred embodiment, the control lever is arranged on the arm. In addition, the fixed cable is provided with a stop which defines the end positions of the control lever.

In another preferred embodiment, the manual switch is designed as an electrical manual switch and the line is designed as an electrical line. In this preferred embodiment, the control lever is provided with an electric actuator. Hand tools anchored to the device consist of a hand tool and device assembly. Thus, in this technical embodiment, the hand tool is clamped in the device carrier and at least one of its function keys is connected to the control mechanism of the device by means of a switching mechanism.

In a preferred embodiment, the hand tool is electrically powered and is provided with a built-in replaceable rechargeable battery power source.

The main advantage of the invention is that the device allows to operate the hand tool while standing without the need to bend the spine. In addition, the device includes a telescopic rod with an adjustable length of extension and a joint with one degree of freedom, which includes a locking and allows to set the vertical inclination of the clamped hand tool. All this helps to set the optimal inclination and length of the grip. Simultaneously with the possibility of gripping and controlling in an upright position, the device also enables remote operation of the switching functions of installed hand tools.

Explanation of drawings

The invention will be explained in detail by drawings which illustrate:

Fig. 1 shows a perspective view of the device;

Fig. 2 shows a perspective view of the carrier of the device from the front left side;

Fig. 3 shows a perspective view of the carrier of the device from the front right side;

Fig. 4 shows a rear perspective view of the carrier of the device;

Fig. 5 shows a perspective view of an assembly with installed hand tools designed as an impact wrench.

Examples of the invention embodiments

The device 1 for clamping and operating hand tools 19 as shown in Figs. 1 to 5 serves for more comfortable control of the selected types of hand tools 19, such as impact wrench, drill, screwdriver, etc. As shown in Figs. 1 and 5, the device 1 consists of three basic parts, which are a carrier 9, a control mechanism and at least one switching mechanism. As shown in Figs. 2 to 4, the carrier 9 is adapted for direct clamping of the hand tool 19. As shown in Fig. 1 , the control mechanism is connected to the carrier 9 and serves to manually control the functions of hand tools 19 in a state where the hand tool 19 is arranged in the carrier 9. The control mechanism thus serves to grip the device 1, move it, and hold it in the selected position. The switching mechanism connects the control mechanism to the carrier 9, thus ensuring remote switching of the function of hand tools 19. In this example of the invention embodiments, the carrier is provided with at least one clamping device for clamping the hand tool 19, while clamping must not limit the functions of this tool 19. In this example of the invention embodiments, the control mechanism consists of a handlebar 2 and a rod 7. Both these parts are interconnected into one unit and simulate the appearance of the control of a children’s scooter. In this example of the invention embodiments, the switching mechanism consists of a manual switch mounted on the handlebar 2 and of an actuator 21 for controlling the function buttons of the hand tool 19. The actuator 21 is arranged on the carrier 9. The switching mechanism is further formed by a line 6, which connects the manual switch and the actuator 21 and ensures the transmission of switching signals between the manual switch and the actuator 21.

In the following example of the invention embodiments, shown in Figs. 1 to 5, the carrier 9 is connected to the control mechanism in the lower part of the rod 7. This connection is rotatable and is made by means of a joint 16. The joint 16 in question is rotatable with one degree of freedom and forms a connecting part between the rod 7 and the carrier 9. In this example of the invention embodiments, the joint 16 forms an integral part of the rod 7, i.e. the control mechanism. In this example of the invention embodiments, the joint 16 is further provided with a locking lever 17, which allows the set position of the joint 16 to be fixed.

According to an example of the invention embodiments, which is shown in Figs. 1 to 5, the carrier 9 is formed by an upper anchoring element 12, into which the grip of the hand tool 19 is fastened. The upper anchoring element 12 is provided with a quick clamp 13 ensuring quick fixing of the gripping part of the hand tool 19 in the upper anchoring element 12. The upper anchoring element 12 is fixed to the joint 16 of the control mechanism. Furthermore, the carrier 9 is formed by a lower ring sleeve 10 with a quick clamp connector 1_F which serves for positioning and clamping the circular part of the hand tool 19 under the working head of the hand tool 19. For fixed connection of the upper anchoring element 12 to the lower ring sleeve 10. the carrier 9 is further provided with an arm 18, thus forming a detachable connection of the upper anchoring element 12 and the lower ring sleeve U) and at the same time defines their relative position.

According to the example of the invention embodiments shown in Fig. 1, the connection between the handlebar 2 and the rod 7 is designed to be detachable. This connection is formed by a clamping sleeve 5, which is detachably anchored at the same time in the middle of the handlebar 2, surrounding and gripping it, and at the same time the clamping sleeve 5 is fixed at the upper end of the rod 7, where it is fixed to the body of the rod 7.

According to the example of the invention embodiments shown in Fig. 1, the rod 7 is designed to be telescopic and is provided with a locking sleeve 8. The locking sleeve 8 surrounds the place where one part of the rod 7 slides out of the other and clamps the connection with its lever mechanism, thus ensuring fixed locking of the extension of the rod 7.

According to the example of the invention embodiments shown in Fig. 1, the handlebar 2 is provided with rubber grips 3 for more comfortable grip and absorption of the transmission of shocks and vibrations from the hand tool 19, transmitted from the device 1 to the operator of the device 1.

According to the example of the invention embodiments shown in Fig. 1, the manual switch is designed as a mechanical switching lever 4. In this example of the invention embodiments, the line 6 is formed by a control cable. In this example of the invention embodiments, the actuator 21 for switching the function buttons of the hand tool 19 is formed by a fixed cable 20 arranged on the upper anchoring element 12. In this example of the invention embodiments, the control lever 14 fits on the function button of the hand tool 19. The control lever 14 is arranged on the arm 18. In addition, the fixed cable 20 is provided with a stop 15, which serves to define one end position of movement of the control lever 14. According to another non-illustrated example of the invention embodiments, the manual switch is designed as an electrical manual switch and the line 6 is designed as an electrical line 6. In this non-illustrated example of the invention embodiments, the control lever 14 is provided with an electric actuator.

Fig. 5 shows an assembly 22 of a hand tool 19 and a device 1 for clamping and operating a hand tool 19. This assembly 22 forms the final working unit, the use of which depends on the type of clamped hand tool 19. In the present illustrated example of the invention embodiments, the hand tool 19 is an electric impact wrench for nuts and bolts. Thus, in this example of the invention embodiments, the hand tool 19 is clamped in the carrier 9 of the device 1, where at least one function button of the hand tool 19 is connected to the control mechanism of the device 1 by means of a switching mechanism.

According to the example of the invention embodiments shown in Fig. 5, the hand tool 19 is electrically powered and is provided with a built-in replaceable rechargeable battery power source 23.

Industrial applicability

The hand tool clamping and operating device can be used in workshops as well as in transport engineering, in the construction of buildings and transport structures, railways, their maintenance and repairs, for fastening and operating in particular heavier hand tools, or for lightening the skeletal system during long-term repetitive assembly activities normally performed in forward bending position with the stress applied on the spinal system and muscles.

List of index reference numerals

1 hand tool clamping and operating device

2 handlebar

3 grip

4 mechanical switching lever

5 clamping sleeve

6 line

7 rod

8 locking sleeve

9 carrier

10 lower ring sleeve

11 quick clamp connector

12 upper anchoring element

13 quick clamp

14 control lever

15 stop

16 joint

17 locking lever

18 arm

19 hand tools

20 fixed cable

21 actuator

22 assembly

23 battery power source

Claims

1 CLAIMS

1. Device (1) for clamping and operating hand tools (19), in particular impact wrench or drill or screwdriver, characterized in that it consists of a carrier (9) adapted for clamping the hand tool (19), of a control mechanism connected to the carrier (9) for manually controlling the movement of the hand tool (19) and of at least one switching mechanism connecting the control mechanism and the carrier (9) to ensure remote switching of the function of hand tool (19), while the carrier (9) is provided with at least one clamping device for clamping hand tools (19), the control mechanism consists of a handlebar (2) and a rod (7) which are connected to each other and the switching mechanism consists of a manual switch mounted on the handlebar (2), of an actuator (21) for controlling the function buttons of the hand tool (19) arranged on the carrier (9) and of a line (6) connecting the manual switch and the actuator (21), for transmitting switching signals between the manual switch and the actuator (21).

2. Device according to claim 1, characterized in that the carrier (9) is connected to the control mechanism in the lower part of the rod (7), while this connection is rotatable by means of a joint (16) with one degree of freedom, in which case the joint (16) forms a connecting part between the rod (7) and the carrier (9) and is provided with a locking lever (17) for fixing the set position of the joint (16).

3. Device according to claims 1 and 2, characterized in that the carrier (9) consists of an upper anchoring element (12) with a quick clamp (13), rotatably connected to the joint (16), of an arm (18) and of a lower ring sleeve (10) with a quick clamp connector (11), in which case the arm (18) forms a fixed connection between the upper anchoring element (12) and the lower ring sleeve (10).

4. Device according to claims 1 to 3, characterized in that the connection of the handlebar (2) and the rod (7) is detachably formed by means of a clamping sleeve (5). 2

5. Device according to claims 1 to 4, characterized in that the rod (7) is telescopically provided with a locking sleeve (8) for locking the length of extension of the rod (7).

6. Device according to claims 1 to 5, characterized in that the handlebar (2) is provided with rubber grips (3).

7. Device according to claims 1 to 6, characterized in that the manual switch is a mechanical switching lever (4), the line (6) is formed by a control cable, and the actuator (21) for switching the function buttons of the tool (19) is formed by a fixed cable (20) arranged on the upper anchoring element (12) and a control lever (14) fitting on the function button of the hand tool (19), in which case the control lever (14) is arranged on the arm (18), while the fixed cable (20) is provided with a stop (15) for defining the end position of the control lever (14).

8. Device according to claims 1 to 6, characterized in that the manual switch is designed as an electrical manual switch, that the line (6) is designed as an electrical line (6) and the control lever (14) is provided with an electric actuator.

9. Assembly (22) of a hand tool (19) and a device (1) according to any of claims 1 to 8, characterized in that the hand tool (19) is clamped in the carrier (9) of the device (1) and at least one of its function keys is connected to the control mechanism of the device (1) by means of a switching mechanism.

10. Assembly according to claim 9, characterized in that the hand tool (19) is electrically powered and is provided with a built-in replaceable rechargeable battery power source.