CN2691799Y - Connections for hand tool sets - Google Patents

Abstract

A kind of connecting device used for hand tool set, the hand tool set includes two connecting units, the two connecting units are connected through the connecting device, the connecting device has: the male connecting part is arranged on one of the connecting units; a female connecting part arranged on the other connecting unit, wherein the female connecting part and the male connecting part are matched with each other to form a complementary shape; the male connecting part at least comprises four side surfaces, wherein at least one side surface comprises a first additional contact part; the female connecting part at least comprises four side surfaces, wherein at least one side surface comprises a second extra contact part, and the second extra contact part corresponds to the first extra contact part. The utility model discloses can bear high torsion, effectively reduce stress concentration's situation to reduce and accept the head and accept each side of hole and the wearing and tearing of bent angle and collapse, improve the life of instrument, and maintain user's operational safety.

Description

Connections for hand tool sets

【Technical field】

The utility model relates to a connection device for a hand tool set.

【Background technique】

As shown in Figure 6, generally traditional hand tools (such as wrenches) are designed in combination with various tool components (such as H handles, connecting rods, universal joints, sleeves, etc.), and the sockets and tool components of hand tools The receiving holes are usually designed in the shape of square and square holes respectively.

In addition to the geometric shape, traditional hand tools and tool components are combined with square and square holes. In order to make the two more stable, a small hole is opened on the side of the socket of the first hand tool. Steel balls and springs are loaded, and a concave hole is opened on the inner side of the receiving hole of the corresponding tool component. When the hand tool and the tool component are connected and used, the spring pushes the steel ball into the concave hole on the inner side of the receiving hole to form a clamp. function, so that the hand tool (such as a wrench) and the tool assembly (such as a sleeve) can be firmly combined during use without falling off, see Figure 7(a).

However, when the wrench and the sleeve are to be combined or disengaged, the sleeve is directly pressed into the wrench or pulled out from the wrench simply by external force. Pushing will keep the steel ball at the position protruding from the side of the socket. When the user wants to pull the sleeve out from the wrench, sometimes there will be operational difficulties, as shown in Figure 7(b). In order to solve this situation and seek convenience and speed in use, conventional wrenches are usually provided with a quick operation device, that is, a perforation is arranged in the axial direction of the joint, and a spring and a ejector pin are arranged in the hole. When the user presses the top of the ejector pin protruding from the wrench, the steel ball with clamping function on the socket head can be moved to a position flush with the side of the socket head, so that the tool assembly with the socket hole of the concave hole will not be stuck It is solid and beneficial to move outwards. At the same time, the bottom end of the ejector pin also pushes out the sleeve outwards, thereby achieving the purpose of quickly disassembling the sleeve, see Figures 8(a) and 8(b).

The socket of the above-mentioned wrench must be equipped with steel balls and springs because it is limited to cooperate with the sleeve, and it is also limited to quickly disengage the sleeve, so there is a need for a quick operation device, so a small hole is opened on the side of the socket. It is unavoidable to set perforations in the axial direction to accommodate related components; and these measures obviously destroy the rigidity of the wrench socket. The performance is quite limited, so that the combination often appears slightly loose, so that when in use, the socket head cannot bear the huge torque generated when the tool is operated and rotates and breaks. This sudden break will cause the user to be unable to Anticipated work injuries and accidents.

In view of this, improving the high torque bearing capacity and service life of the combination of the socket head of the hand tool (such as a wrench) and the socket hole of the tool component (such as a sleeve) is indeed a relatively mature hand tool industry that needs to be improved. important topic.

【Content of utility model】

The purpose of this utility model is to provide a connecting device for hand tool sets, which can withstand high torque, effectively reduce stress concentration, reduce the wear and tear of the sides and corners of the socket joint and the socket hole, and improve the quality of the tool. service life, and maintain the user's operational safety.

In order to achieve the above purpose, the utility model provides a connection device for a hand tool set, the hand tool set includes two connection units, the two connection units are connected through the connection device, the connection device has: a male connection part , set on one of the connection units;

A female connecting part is arranged on another connecting unit, and the female connecting part and the male connecting part are matched with each other to form a complementary shape; the characteristics are as follows:

The male connector includes at least four sides, at least one of which includes a first additional contact;

The female connecting portion includes at least four sides, at least one of which includes a second additional contact portion, and the second additional contact portion corresponds to the first additional contact portion.

Preferably, the two connecting units can be a hand tool and a tool component respectively; the male connecting part is set on the hand tool, and the female connecting part is set on the tool component.

Preferably, the two connecting units are respectively a hand tool and a tool component; and the male connecting part is set on the tool component, and the female connecting part is set on the hand tool.

Preferably, the two connecting units can also be two tool components respectively; and the male connecting part is set on one of the tool components, and the female connecting part is set on the other tool component.

Preferably, the male connection part can be a socket, and the female connection part is a socket hole.

Preferably, the receiving head may include four sides, at least one of which includes the first additional contact portion; the receiving hole includes four sides, at least one of which includes the second additional contact portion.

Preferably, the two side surfaces of the receiving head each include the first additional contact portion; the two side surfaces of the receiving hole each include the second additional contact portion.

Preferably, each of the three sides of the receiving head includes the first additional contact portion; each of the three sides of the receiving hole includes the second additional contact portion.

Preferably, the first additional contact portion may include at least one protrusion, and the second additional contact portion may include at least one recess.

Preferably, the at least one protruding part and the at least one recessed part may form a corresponding angle, or a corresponding arc, or a corresponding trapezoid.

To sum up, the connecting device of the hand tool set provided by the utility model includes at least four sides and at least one of the sides includes a socket with at least one protrusion and a socket that matches the socket. By enlarging the socket The cross-sectional area of the head can provide a large moment of inertia (moment of inertia), so that when the socket head and socket hole are used in combination, they can withstand high torsional loads during tool operation. In addition, because the number of sides and corners is more than that of the traditional square, the force-bearing surface increases, so the torsion force can be evenly distributed on more force-bearing surfaces, and the phenomenon of stress concentration can be effectively reduced to reduce All sides and corners collapsed. Due to the improvement of the above-mentioned mechanical strength, the tool can be assembled stably and withstand the operation of high torsional load, so as to increase the service life of the tool and improve the working safety of the user.

The utility model can be applied to all kinds of hand tools and tool components, or the combination of various tool components. Its features can be clearly understood by referring to the following drawings and detailed descriptions of preferred embodiments.

【Description of drawings】

Fig. 1(a) is a three-dimensional schematic diagram of the connection device of the wrench, the connecting rod and the socket of the sleeve and the connection device of the socket of the utility model.

FIG. 1( b ) is another schematic perspective view of FIG. 1( a ).

Fig. 2 is a three-dimensional explanatory diagram of the combination of the hand tool of the present invention with various tool components.

Fig. 3 shows a connecting rod that is used for the socket head of the present utility model at one end and for the conventional square socket hole at the other end.

Fig. 4 shows an adapter sleeve used for one end of the receiving hole of the present invention, and the other end of which is used for the conventional square socket.

Figures 5(a), 5(b), and 5(c) respectively show the cross-sections of the socket head and the socket hole of the present invention, wherein one side, two sides and three sides respectively have a cross-sectional schematic diagram of an angular protrusion .

Fig. 6 is an explanatory perspective view showing a combination of a conventional hand tool with various tool components.

7( a ) and 7 ( b ) respectively show the schematic diagrams of states in which the socket head and the socket hole are assembled and separated from each other by a fastening device in the prior art.

Figures 8(a) and 8(b) respectively show the state diagrams of the state in which the socket head and the socket hole are assembled to disengaged using a quick operation device in the prior art.

【Detailed ways】

The connecting device for a hand tool set of the utility model is used to connect two connecting units of a hand tool set, so that the two connecting units can bear a higher torsional load when rotating. FIG. 1( a ) and FIG. 1( b ) show an embodiment of a connection device capable of withstanding high torsion force according to the hand tool set of the present invention. This embodiment simultaneously illustrates that the two connecting units are respectively a combination of a hand tool (i.e. a wrench 10) and a tool assembly (i.e. a connecting rod 20), and also illustrates that the two connecting units are respectively two tool assemblies (i.e. the connecting rod 20). 20 and a set of sleeve 30) to receive combination. In detail, the wrench 10 receives the connecting rod 20 and further receives the sleeve 30 .

The wrench 10 includes: a handle 11 , a rod 12 and a head 13 , the head 13 has a socket 14 extending laterally from the head 13 . The socket 14 has a square cross section with four sides, preferably, three sides each have a protrusion. One end of the connecting rod 20 is a receiving hole 21, which also has a square cross-section and has four sides, of which three sides each have a recessed portion. The geometric shape of the head 14 is complementary, so as to be connected with the socket head 14 of the wrench 10; the other end of the connecting rod 20 is a socket head 22, which also has a square cross section with four sides, three of which are Each has a protruding portion to be connected and combined with the receiving hole 31 of the sleeve 30 having the same geometrical shape as the receiving hole 21 of the connecting rod 20 . Preferably, the head of the wrench 10 has a reversing device 16, which can be set to allow the socket head to rotate in one direction clockwise or counterclockwise when the wrench is operated. The structure of the device and its application.

More preferably, the socket head 14 is provided with a clamping mechanism, which is provided with a small hole on one of the flat sides of the socket head 14 without a raised portion, and an elastic device (not shown) and A steel ball 17; and a corresponding flat side of the receiving hole 21 is provided with a concave hole (not shown). When the socket head 14 is combined with the socket hole 21, the steel ball 17 of the socket socket 14 is aligned and engaged with the concave hole of the socket hole, and the spring continuously provides a thrust to push the steel ball 17 outward, so that the socket head 14 and the socket hole 21 can The combination is stable, so that the clamping mechanism can play the function that the connecting rod 20 is firmly fitted on the head 13 of the wrench 10 during use. In addition, the head 13 of the wrench 10 can optionally be provided with a quick operating device 15, by pressing the quick operating device 15, the fastening mechanism can be released, and at the same time, the connecting rod 20 can be pushed out, which is convenient for the user to quickly release Connecting rod 20 or carry out the combination of other tools as required.

Fig. 2 is a schematic diagram showing the combined conversion of the wrench with the multi-faceted polygonal socket of the present invention and the tool assembly with the multi-faced polygonal socket and the socket of the present invention. The wrench 10 with multi-sided polygonal socket head can be combined with various tool assemblies, for example, the wrench 10 is not specifically combined with the connecting rod 20 and then combined with the tool assembly 30, wherein the connecting rod 20 can be replaced with a tool assembly with the utility model. Multi-faceted polygonal joints and universal joints 50 with the characteristics of receiving holes, short connecting rods 40 , or other connecting components; of course, the wrench can also be directly combined with the sleeve 30 .

In addition, the tool assembly with the four-sided polygonal receiving hole of the present invention can be directly combined with the traditional square socket head without changing the sleeve. However, if the hand tool or tool assembly with the multi-faceted polygonal socket or the socket of the present invention is to be combined with the tool assembly or the hand tool with the known square socket or the socket, a transfer is required. Sleeves to allow matching combinations. For example in Fig. 3, one end of connecting rod 60 has a multifaceted polygonal receiving hole 61 and can be connected with a hand tool or tool assembly with multifaceted polygonal socket head; The other end of connecting rod 60 then has a conventional four The square socket head 62 can be combined with another tool assembly having a known square socket hole to achieve the purpose of switching. Referring also to Fig. 4, one end of the adapter sleeve 70 has a multi-faceted polygonal receiving hole 71 which can be connected with a hand tool or tool assembly having a multi-faceted polygonal socket head, and the other end of the adapter sleeve 70 has a conventional The square receiving hole 72 can be combined with another tool assembly having a known square receiving hole to achieve the purpose of switching.

The multi-faceted polygonal joint and the receiving hole described in the utility model can be designed as a male connection part and a female connection part respectively, and can also be designed as a female connection part and a positive connection part respectively, and the multi-faceted polygonal joint and the receiving hole are not It is limited to the number and shape of a protrusion and a recess on each of its three sides as in the above-mentioned embodiment, and it can also be a socket or a socket with at least four sides, wherein at least one side includes at least one protrusion portion or depression, that is, the first additional contact portion or the second additional contact portion, the protrusion or depression can be a corresponding angle, arc, or trapezoid, etc. to increase the area of the original square side and the angle Any style, wherein Figures 5(a), 5(b), and 5(c) show a square socket or hole, and one side, two sides and three sides respectively have a cross-sectional state of an angular protrusion sample diagram.

According to the socket head of the present utility model, since the socket head of the known simple square has a larger cross-sectional area, its moment of inertia is larger and can withstand greater torque during operation, and because the socket head of the utility model The increased contact area between the head and the socket hole can reduce stress concentration and increase the service life of the socket head and the socket hole. In addition, because the socket head and the socket hole produce a more complex geometric shape, it can provide more stability for their combination.

The utility model can also be implemented in other specific forms, such as changing the side of the socket head to a recessed part, and changing the side face of the socket hole to correspond to a raised part; or changing the hand tool to a socket hole, and Interconnects with the socket head of the tool assembly.

Claims (12)

1. jockey that is used for the hand-held tool group, this hand-held tool group comprises two linkage units, and this two linkage unit is to connect by this jockey, and this jockey has:

One positive connecting portion is on the linkage unit located therein;

One negative connecting portion is located on another linkage unit, and this feminine gender connecting portion and this positive connecting portion collocation mutually are complementary shape; It is characterized in that:

This positive connecting portion comprises four sides at least, and wherein at least one this side comprises one first extra contact site;

This feminine gender connecting portion comprises four sides at least, and wherein at least one this side comprises one second extra contact site, and this second extra contact site is corresponding mutually with this first extra contact site.

2. the jockey that is used for the hand-held tool group according to claim 1 is characterized in that: this two linkage unit is respectively a hand-held tool and a tool assembly; And should be located on this hand-held tool by positive connecting portion, this feminine gender connecting portion then is located on this tool assembly.

3. the jockey that is used for the hand-held tool group according to claim 1 is characterized in that: this two linkage unit is respectively a hand-held tool and a tool assembly; And should be located on this tool assembly by positive connecting portion, this feminine gender connecting portion then is located on this hand-held tool.

4. the jockey that is used for the hand-held tool group according to claim 1 is characterized in that: this two linkage unit is respectively two tool assemblies; And on should positive connecting portion located therein one this tool assembly, this feminine gender connecting portion then be located on another this tool assembly.

5. according to claim 2, the 3 or 4 described jockeys that are used for the hand-held tool group, it is characterized in that: this positive connecting portion is to accept head, and this feminine gender connecting portion is a receiving hole.

6. the jockey that is used for the hand-held tool group according to claim 5 is characterized in that: this is accepted head and comprises four sides, and wherein at least one this side comprises this first extra contact site; This receiving hole comprises four sides, and wherein at least one this side comprises this second extra contact site.

7. the jockey that is used for the hand-held tool group according to claim 6 is characterized in that: these two these sides of accepting head respectively comprise this first extra contact site; Two these sides of this receiving hole respectively comprise this second extra contact site.

8. the jockey that is used for the hand-held tool group according to claim 6 is characterized in that: these three these sides of accepting head respectively comprise this first extra contact site; Three these sides of this receiving hole respectively comprise this second extra contact site.

9. the jockey that is used for the hand-held tool group according to claim 8 is characterized in that: this first extra contact site comprises at least one lug boss, and this second extra contact site comprises at least one depressed part.

10. the jockey that is used for the hand-held tool group according to claim 9 is characterized in that: this at least one lug boss is the dihedral that is corresponding mutually with this at least one depressed part.

11. the jockey that is used for the hand-held tool group according to claim 9 is characterized in that: this at least one lug boss is the arc that is corresponding mutually with this at least one depressed part.

12. the jockey that is used for the hand-held tool group according to claim 9 is characterized in that: this at least one lug boss and this at least one depressed part are to be corresponding trapezoidal mutually.

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