CN103000404B - A kind of pipe axle and a kind of switching device including this pipe axle - Google Patents

Abstract

The open a kind of pipe axle of the present invention, pipe axle body and one including a hollow are located on this pipe axle body outer wall, there are the parts in lock pin chamber, this lock pin chamber is connected with the inside of this pipe axle body by a lock hole, these parts with lock pin chamber also have a handle hole, wherein this lock pin intracavity is additionally provided with a flexible lock pin, this flexible lock pin has a tilt operation face facing to this handle hole position and a locking end portions, this locking end portions is inserted in this lock hole under the elastic force effect of this flexible lock pin, and this operating surface and this locking end portions are configured to this operating surface and control this locking end portions and insert this lock hole or retraction.Invention additionally discloses a kind of switching device including this pipe axle and a switch control shaft being located in this pipe axle, wherein this locking end portions is against a clamping part of setting on this switch control shaft.The pipe axle that the present invention proposes changes the lock mode being in the past screwed pad, simplifies operating procedure, improves operation ease and agility.

Description

A tube shaft and a switch device including the tube shaft

technical field

The invention relates to the field of switchgear, in particular to a tube shaft for the switchgear and a switchgear comprising the tube shaft.

Background technique

In switchgear in the field of low-voltage electrical appliances, the locking of the square shaft in the tube shaft is done with screws or similar parts. As shown in Figures 1-3, the prior art WO2005/073488 A1 describes a tubular shaft structure. The outer wall of the tube shaft 3 used for the switch 2 is provided with a protruding part 12, the tube shaft 3 has a hole 5, the protruding part 12 has a cavity 13 communicating with the hole 5, and the fastener 6 can be fixed on the tube shaft 3 by a screw 4. Cavity 13 bottom. 2 and 3 show the loosened and tightened states of the screw 4, respectively. It can be seen that in this structure, two parts are required to complete the locking, one is the screw 4 and the other is the fastener 6 . The purpose of locking the square shaft is achieved by tightening the screw 4 to fix the fastener 6 .

However, this kind of locking structure has many installation parts, which is inconvenient to install, and the screw is easy to rotate over the position and fall off when the square shaft is loosened. In addition, the operation steps in the process of locking the square shaft are cumbersome, and the operation space is small, which makes the installation process inconvenient.

Contents of the invention

In order to improve the problems existing in the prior art, the present invention proposes a tube shaft and a switch device including the tube shaft, so as to simplify the steps of installing and dismounting external devices.

Technical scheme of the present invention comprises:

A tube shaft, comprising a hollow tube shaft body and a component with a lock pin cavity, the component with a lock pin cavity is arranged on the outer wall of the tube shaft body, the lock pin cavity is connected to the tube shaft through a locking hole The interior of the main body is connected, and the part with the lock pin cavity also has an operation hole, wherein an elastic lock pin is also arranged in the lock pin cavity, and the elastic lock pin has an inclined operation surface facing the position of the operation hole , the elastic locking pin also has a locking end, the locking end is inserted into the locking hole under the elastic force of the elastic locking pin, and the operating surface and the locking end are configured such that the operating surface controls the locking end Insert into the locking hole or retract.

The elastic lock pin is a leaf spring, one end of which abuts against the inner wall of the lock pin cavity away from the tube shaft body, the other end forms the inclined operating surface, and the locking end is arranged at the front end of the inclined operating surface. The leaf spring is V-shaped or S-shaped. The locking end is bent into a hooked point.

The operation hole of the component with the locking pin cavity is provided with a stopper, and the component is also provided with a mounting hole for mounting the elastic locking pin.

The component with the lock pin cavity is integrated with the tube shaft body. Alternatively, the component having the locking pin cavity and the tube shaft body are independent components and fixed to the tube shaft body.

The tube shaft also includes a pivot fixed on the outer wall of the tube shaft body through a base and a crowbar pivotally connected to the pivot, one end of the crowbar goes out of the lock pin cavity through the operation hole, and the crowbar The other end of the handle contacts the operating surface. Wherein, the crowbar is curved, and its bending direction is away from the outer wall of the tube shaft body.

Technical scheme of the present invention also includes:

A switch device, comprising a tube shaft as described above and a switch control shaft arranged in the tube shaft, wherein the locking end abuts against the switch control shaft, and a buckle portion is provided on the switch control shaft , the locking end abuts against the buckle.

The device proposed by the present invention uses the elastic force of the elastic lock pin to fix the switch control shaft in the tube shaft, and only with the help of a device similar to a crowbar, the elastic lock pin can be exerted force, and the switch control shaft can be released from locking without further The disassembly and assembly of the switch control shaft can be realized by performing redundant disassembly work, which saves the process.

Description of drawings

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that those of ordinary skill in the art will be more aware of the above-mentioned and other features and advantages of the present invention. In the accompanying drawings:

Figure 1 is a schematic diagram of an existing tube shaft for a switch;

Fig. 2 is a schematic cross-sectional view of the pipe shaft in Fig. 1, wherein the screw is in a loosened state;

Fig. 3 is another schematic cross-sectional view of the pipe shaft in Fig. 1, wherein the screw is in a tightened state;

Fig. 4 is a schematic perspective view of a pipe shaft according to an embodiment of the present invention;

Fig. 5 is a schematic cross-sectional structure diagram of the pipe shaft of Fig. 4;

Figures 6-9 illustrate the operation of the tube shaft of Figure 4;

Figure 10 is a schematic perspective view of a tube shaft according to another embodiment of the present invention, the tube shaft has square parts;

Fig. 11 is a schematic cross-sectional view of a tubular shaft according to yet another embodiment of the present invention, showing a crowbar mechanism disposed in a lock pin cavity;

Figures 12 and 13 show schematic diagrams of alternative structures of elastic lock pins in embodiments of the present invention;

Among them, the attached figure numbers are as follows:

100 tube shafts 200 switch control shafts 300 tools

10 tube shaft body 15 holes

20 parts 21 operation hole 22 installation hole 23 locking pin cavity

24 stopper

30 Elastic locking pin 31 Operating surface 32 Locking end 33 Leaf spring end

40 Pry handle mechanism 41 Pry handle end 42 Pry handle end 43 Base

44 pivot

50 locking holes

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

In the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "above", "below" etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention rather than Requirements that the invention must be constructed and operated in a particular orientation are not to be construed as limitations on the invention.

The embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figure 4, the tubular shaft 100 provided for the embodiment of the present invention includes a centrally controlled tubular shaft body 10, which has a hole 15 (such as a square hole, see Figure 5) inside, and a switch control shaft can be connected to the hole 15 200 (see Fig. 7-10), or other connecting devices that can be set to match the pipe shaft 100.

The tube shaft 100 also includes a component 20 with a locking pin cavity 23 disposed on the outer wall of the tube shaft body 10 . The component 20 can be integrated with the tube shaft body 10 . Alternatively, the component 20 and the tube shaft body 10 may be separate components and fixed together, for example, by plugging or screwing.

The locking pin cavity 23 communicates with the hole 15 inside the tube shaft body 10 through a locking hole 50 . And this component 20 also has an operation hole 21, its position can be set according to the specific situation, as long as it is convenient for operation.

In the lock pin cavity 23 of the component 20, an elastic lock pin 30 is also provided, and the elastic lock pin 30 has an inclined operating surface 31 facing the position of the operating hole 21 and a locking end 32, wherein the operating surface 31 and the locking end 32 are configured so that the locking end 32 can be controlled to be inserted into the locking hole 50 or retracted from the locking hole 50 by applying a force to the operating surface 31 .

In the embodiment shown in FIG. 4 , the elastic locking pin 30 is a V-shaped leaf spring, one end 33 of which abuts against the inner wall of the locking pin cavity 23 away from the tube shaft body 10 , and the other end forms the inclined operating surface 31 , the locking end 32 is provided at the front end of the operation surface 31 . The locking end 32 is inserted into the locking hole 50 under the action of elastic force. A stop portion 24 is provided on the operation hole 21 for preventing the leaf spring from falling out of the lock pin cavity 23 .

FIG. 5 shows that the component 20 with the lock pin cavity 23 is integrated with the tube shaft 10 . At this time, in order to facilitate the installation and removal of the leaf spring, an installation hole 22 is provided on the part 20 with the lock pin cavity 23 , and the installation hole 22 can be provided on the side wall of the component 20 . Of course, the position of the installation hole 22 can be set according to the situation.

The function of setting the mounting hole 22 is to facilitate the removal of the elastic locking pin 30 in the locking pin cavity 23 of the component 20 at any time. After the elastic locking pin 30 is damaged or fails, it is convenient to replace.

Alternatively, the component 20 with the lock pin cavity 23 and the tube shaft body 10 can also be a separate structure. At this time, the connection mode between the component 20 and the tube shaft body 10 can be realized by the structure of the clamping foot and the clamping groove. Alternatively, the component 20 may also be fixed on the outer wall of the tube shaft body 10 by screws. When the component 20 and the tube shaft body 10 are separate structures, it is also possible to lock the external equipment in the tube shaft body 10 (such as the switch control shaft 200, see FIGS. 6 to 9 ), The component 20 is disassembled to save installation space. Or when transporting the tube shaft 100 , the tube shaft body 10 and the component 20 can be disassembled and transported separately to save transportation space. If the part 20 with the lock pin cavity 23 is a separate structure (such as connected by plugging or screwing) with the tubular shaft body 10, the installation hole for the elastic lock pin 30 may not be provided, and the part 20 can be disassembled To replace the elastic lock pin 30.

Wherein, the part 20 with the lock pin cavity 23 can be arranged at one end of the tube shaft body 10, and the top of the part 20 is arranged flush with the end of the tube shaft body 10 and located in the same plane. This design makes it easier to insert the tool 300 into the operating hole 21 and also facilitates applying external force to the elastic locking pin 30 in the component 20 . The operating hole 21 may be provided on the top of the component 2 .

6-9 illustrate the operation of the tubular shaft 100 . As shown in FIG. 6 , when the switch control shaft 200 is not installed, the state is the same as that shown in FIG. 4 , that is, the locking end 32 is inserted into the locking hole 50 under the action of elastic force.

FIG. 7 is a schematic diagram of installing the switch control shaft 200 . Use a tool 300 (such as a screwdriver or a crowbar) to insert into the operation hole 21 and press the operation surface 31 of the elastic locking pin 30 . The operating surface 31 receives force from the tool 300 to overcome the elastic force of the leaf spring, so that the operating surface 31 drives the locking end 32 to retract from the locking hole 50 , and then can be inserted into the switch control shaft 200 .

After the installation is completed, the tool 300 is taken out, and the operation surface 31 returns to the initial position under the action of the elastic force, and the locking end 32 is also inserted into the locking hole 50 under the action of the elastic force. At this time, it abuts against the switch control shaft 200 inside the tube shaft body 10 , so as to withstand the switch control shaft 200 under the action of elastic force, as shown in FIG. 8 . The locking end 32 can be bent into a hook-like pointed corner, so that the switch control shaft 200 can be locked more firmly.

As shown in FIG. 9 , when the switch control shaft 200 needs to be disassembled, a tool 300 can be used to extend into the operating hole 21 and apply external force to the elastic locking pin 30 by pressing the elastic locking pin 30 (the operating surface 31 ). At this time, the locking end 32 is retracted from the locking hole 50 , and the switch control shaft 200 can be pulled out from the tube shaft body 10 to achieve the purpose of disassembly.

The component 20 with the lock pin cavity 23 can be a square structure ( FIG. 10 ), or a semi-cylindrical structure ( FIG. 5 ). Specifically, components with a square structure are easy to install elastic devices of various shapes and have a wide range of applications; components with a semi-cylindrical structure need to design specific elastic devices according to the shape of the component, but they occupy less space and are suitable for installation in narrow spaces middle.

The axial direction of the locking pin cavity 23 can also be set parallel to or perpendicular to the axial direction of the tube shaft body 10 , but not limited to parallel or perpendicular, and the axial orientation of the locking pin cavity 23 can be determined according to specific conditions. For the locking pin chambers 23 arranged in different directions, the orientations of the elastic locking pin 30 and the operating hole 21 are also different, but the operating surface 31 must face the operating hole 21 . This design can be applied to different installation environments, and different structures at the positions of different operation holes 21 can be specifically selected according to the needs of the installation environment.

The elastic locking pin 30 in the present invention is described as a leaf spring, but it can also be other elastic components that can provide elastic force to lock the locking end with the device inside the tube shaft body 10 . For example, the elastic locking pin may be a component comprising a spring, one end of which is fixed on the inside of the part 20 away from the body of the tube shaft, and the other end is fixed to a slider having said inclined operating surface, The front end of the operation surface is provided with the locking end, and the operation surface also faces the operation hole. The control shaft 200 can be locked in a similar manner and unlocked using the tool 300 in the same manner.

As shown in FIG. 11 , for the convenience of operation, according to another embodiment of the present invention, the tube shaft 100 ′ is different from the tube shaft shown in FIG. 4 in that the tube shaft also includes a base 43 fixed on the tube shaft The pivot 44 on the outer wall of the body 10 and a crowbar 40 pivotally connected with the pivot 44, one end 41 of the crowbar 40 passes through the operation hole 21 and stretches out the lock pin cavity 23, the other end of the crowbar One end contacts the operation surface 31 .

External force acts on one end 41 of the crowbar 40 protruding from the component 20 , so that the other end 42 acts on the operating surface 31 of the elastic locking pin 30 . Under the action of external force, the operation surface 31 can drive the locking end 32 to withdraw from the locking hole 50, so as to disengage from the external device (such as the switch control shaft 200) and realize the purpose of disassembling the external device. The advantage of this design method is that the disassembly process can be realized without using other tools, which further facilitates the operation.

Although shown in Fig. 11, this pivot 44 is fixed on this tubular shaft body by base 43, yet, this pivot 44 also can be installed directly on the wall of this part 20 facing this operation surface 31 (as across The operation hole 21), and the crowbar 40 can rotate around the pivot 44. In the case where the crowbar is provided, the operating surface 31 may not use a slope, as long as one end 42 of the crowbar 40 can act on the operation surface 31 so as to control the locking end 32 to be inserted into the locking hole 50 or Just exit.

12 and 13 show alternative arrangements of leaf springs in the embodiment of FIG. 4 . As shown in FIG. 12 , when the desired locking effect can be achieved, the locking end 31 of the leaf spring may not be bent into a hook-like sharp corner, so that the installation is more convenient. Figure 13 shows another structure, the leaf spring is bent into an S shape, and its locking end is bent into a hook-like sharp corner. The elastic locking pin 30 can also be of other specific structures, as long as it can pass through the locking hole 50, apply elastic force to the external device (such as a switch control shaft) inside the tubular shaft body 10 to lock, and can be retracted under the action of an external force. That's it.

As shown in the figure, another embodiment of the present invention relates to a switch device comprising the above-mentioned tube shaft 100 , and a switch control shaft 200 is disposed in the tube shaft 100 . As mentioned above, the locking end 32 abuts against the switch control shaft 200, wherein the switch control shaft 200 is provided with a buckle part, such as the buckle part is configured as at least one slot, the locking end of the elastic lock pin 30 The part 32 abuts against the groove, or the buckle part is configured as at least one rib, and the locking end 32 of the elastic locking pin 30 abuts against the rib. Because it is not easy to lock the switch control shaft 200 on the smooth outer surface, so in this structure, when the elastic lock pin 30 is in contact with the switch control shaft 200, the locking end 32 can fall into the groove on the surface, Or stuck on the convex edge of the surface, the locking strength of the switch control shaft 200 is increased, and the locking function can be better realized.

The pipe shaft 100 proposed by the present invention is provided with a part 20 having a lock pin cavity on the outer wall of the pipe shaft 100, and the device (switch control shaft 200) inside the pipe shaft body 10 is locked with an elastic lock pin 30, replacing the conventional The locking method of fixing the washer with screws improves the convenience and quickness of operation and simplifies the operation steps.

Although the embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. , the scope of the present invention is defined by the claims and their equivalents.

Claims (8)

1. a pipe axle (100), including pipe axle body (10) and parts (20) with lock pin chamber (23) of a hollow, These parts (20) with lock pin chamber are located on described pipe axle body (10) outer wall, it is characterised in that this lock pin chamber (23) is passed through One lock hole (50) connects with the inside of this pipe axle body (10), described in there are the parts (20) in lock pin chamber also there is a behaviour Making hole (21), to be wherein additionally provided with a flexible lock pin (30) in this lock pin chamber (23), this flexible lock pin (30) has one and faces toward The operating surface (31) of the inclination of this handle hole (21) position, this flexible lock pin (30) also has a locking end portions (32), this lock Fixed end portion (32) inserts in this lock hole (50) under the elastic force effect of this flexible lock pin (30), and this operating surface (31) with should Locking end portions (32) be configured to this operating surface (31) control this locking end portions (32) insert this lock hole (50) or retract, this bullet Property lock pin (30) is a leaf spring, and its one end is resisted against this lock pin chamber (23) inwall away from this pipe axle body (10), the other end Forming the operating surface (31) of this inclination, this locking end portions (32) is located at this tilt operation face (31) front end；This pipe axle (100) also wraps Include and be fixed on a pivot (44) on this pipe axle body (10) outer wall and one and this pivot (44) by a base (43) The pry handle (40) of pivot joint, this lock pin chamber (23), the other end of this pry handle are stretched out through this handle hole (21) in this pry handle one end (41) (42) this operating surface (31) is contacted.

2. as claimed in claim 1 pipe axle (100), it is characterised in that described in there is the operation of parts (20) of lock pin chamber (23) Hole (21) is provided with stopper section (24), and these parts (20) are additionally provided with the installing hole for installing described flexible lock pin (30) (22)。

3. pipe axle (100) as claimed in claim 1, it is characterised in that described in there is the parts (20) in lock pin chamber and described pipe Axle body (10) is structure as a whole.

4. pipe axle (100) as claimed in claim 1, it is characterised in that described in there is the parts (20) in lock pin chamber and described pipe Axle body (10) is parts independent of each other, and fixes with described pipe axle body (10).

5. pipe axle (100) as claimed in claim 1, it is characterised in that this pry handle (40) is bending, and its bending direction is dorsad This pipe axle body (10) outer wall.

Pipe axle (100) the most according to claim 1, it is characterised in that this leaf spring is V-arrangement or S-shaped.

7. according to the pipe axle (100) described in claim 1 or 6, it is characterised in that this locking end portions (32) is bent into hook-shaped point Angle.

8. a switching device, the switch control shaft (200) being located in this pipe axle including a pipe axle and, its feature exists In, this pipe axle is the pipe axle (100) as described in any one of claim 1-7, and described locking end portions (32) is against this on-off control Axle (200), this switch control shaft (200) is provided with a clamping part, and this locking end portions (32) is resisted against this clamping part.