CN110211853B - Plug, fuse assembly thereof and fuse assembly sheath - Google Patents
Plug, fuse assembly thereof and fuse assembly sheath Download PDFInfo
- Publication number
- CN110211853B CN110211853B CN201810168273.5A CN201810168273A CN110211853B CN 110211853 B CN110211853 B CN 110211853B CN 201810168273 A CN201810168273 A CN 201810168273A CN 110211853 B CN110211853 B CN 110211853B
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- insulator
- button
- arm
- stop
- operating handle
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/22—Intermediate or auxiliary parts for carrying, holding, or retaining fuse, co-operating with base or fixed holder, and removable therefrom for renewing the fuse
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- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The invention relates to a plug, a fuse assembly thereof and a fuse assembly sheath, wherein the fuse assembly sheath comprises an insulator, a fuse mounting part is arranged on the insulator, an operating handle for pulling the insulator out of the plug is movably assembled on the insulator, the movable stroke of the operating handle is provided with a hidden position hidden on the insulator and a protruding position protruding out of the insulator for an operator to pull, the insulator is also provided with an elastic element for applying acting force to the operating handle to enable the operating handle to protrude out of the insulator, the operating handle is provided with a stop arm which is in stop fit with the insulator when the operating handle is in the hidden position, the insulator is provided with a button which is used for releasing the stop fit relation between the stop arm and the insulator so as to enable the operating handle to move towards the protruding position, the button is movably assembled on the insulator and pushes the stop arm to move the stop arm so as to release the stop matching relationship between the stop arm and the insulator.
Description
Technical Field
The invention relates to a plug, a fuse assembly and a fuse assembly sheath.
Background
As shown in fig. 1 and 2, the conventional fuse assembly includes a sheath and a fuse 1 disposed in the sheath, the sheath includes an insulator 2, a fuse mounting portion is disposed on the insulator 2, an operating handle 3 is movably assembled on the insulator 2, a spring 4 is disposed between the operating handle 3 and the insulator 2, and a cylindrical pin 5 is further disposed on the operating handle 3. The protective tube 1 is arranged on the protective tube mounting part of the insulator 2, and the operating handle 3 is provided with a slot matched with a flat screwdriver. When the fuse tube needs to be disassembled, the flat screwdriver is inserted into the slot and rotates the operating handle 3 to the opening position, at the moment, the operating handle 3 protrudes out of the insulator 2 under the elastic force action of the spring 4, and the fuse tube assembly can be taken out to disassemble or replace the fuse tube by pulling the operating handle 3. When installing the fuse, the handle 3 is first pushed into the insulator 2 and the handle 3 is rotated to the closed position with a screwdriver. This protective tube dismouting structure need twist the operating handle to the relevant position with the help of the screwdriver when carrying out the dismouting of protective tube, dismantles complex operation, has the limitation.
Disclosure of Invention
The invention aims to provide a protective sleeve of a fuse assembly, which aims to solve the problems that the dismounting operation of a fuse is complicated and the fuse has limitation in a fuse dismounting structure in the prior art; the invention also aims to provide a fuse assembly and a plug using the sheath.
The technical scheme adopted by the protective sleeve of the fuse assembly is as follows:
the protective sleeve of the fuse tube assembly comprises an insulator, a fuse tube mounting part is arranged on the insulator, an operating handle used for pulling the insulator out of a plug is movably assembled on the insulator, a hidden position hidden on the insulator and a protruding position protruding out of the insulator for an operator to pull are arranged in the moving stroke of the operating handle, an elastic piece used for applying acting force to the operating handle to enable the operating handle to protrude out of the insulator is further arranged on the insulator, a stop arm matched with the insulator in a stopping manner when the operating handle is in the hidden position is arranged on the operating handle, a button used for releasing the stopping matching relationship between the stop arm and the insulator to enable the operating handle to move towards the protruding position is arranged on the insulator, and the button is movably assembled on the insulator and enables the stop arm to move by pushing the stop arm to release the stopping matching relationship between the stop arm and the insulator; or the operating handle is provided with a stop arm, the insulator is provided with a button which is in stop fit with the stop arm when the operating handle is in the hidden position, the button is movably assembled on the insulator so as to release the stop fit relation between the stop arm and the button when the operating handle moves towards the protruding position, and the button enables the stop arm to move by pushing the stop arm so as to release the stop fit relation between the stop arm and the button.
Furthermore, the stop arm is an elastic arm arranged on the operating handle, and the button enables the elastic arm to deform and move by pushing the elastic arm so as to release the stop matching relationship between the elastic arm and the insulator. The stop arm is arranged as an elastic arm, and the elastic arm can release the stop matching relationship between the stop arm and the insulator when deformed and moved by the push of the button, so that the protective sleeve of the fuse assembly has a simple structure and is convenient to assemble.
Furthermore, the button and/or the elastic arm are/is provided with a guide surface which guides the elastic arm to deform under the action of pushing force of the button so as to release the stop matching relationship between the elastic arm and the insulator. The guide surface facilitates release of the snap-fit relationship of the resilient arm and the insulator from the button.
Further, the guide surface is a guide slope. The guide surface is a guide inclined surface, and the processing is convenient.
Furthermore, the insulator is provided with a button mounting hole for mounting a button and an operating handle mounting hole for mounting an operating handle, the hole wall of the button mounting hole is provided with a limiting hole which is communicated with the button mounting hole and the operating handle mounting hole and is used for inserting the stop arm when the operating handle is in the hidden position, and the insulator is in stop fit with the stop arm through the hole wall of the limiting hole when the operating handle is in the hidden position. The stop arm is matched with the hole wall of the limiting hole in a stop way to ensure the stability of the operating handle in the hidden position.
Furthermore, the movable end of the stop arm is provided with a limit bump for inserting into the limit hole and a stop surface for stop-matching with the hole wall of the operation handle mounting hole when the limit bump is inserted into the limit hole. Therefore, when the operating handle is in the hidden position, the stop arm is in stop fit with the hole wall of the limiting hole and the hole wall of the operating handle mounting hole, the button is prevented from being damaged due to stop fit of the stop arm and the button, and the service life of the sheath is prolonged.
Furthermore, the blocking arm is obliquely arranged, the fixed end of the blocking arm is far away from the operation end of the operation handle, and the movable end of the blocking arm is close to the operation end of the operation handle. The movable end of the blocking arm is close to the operation end of the operation handle, so that the button design and the pushing of the blocking arm are facilitated.
Further, an end surface of the button near the operation end of the lever is not higher than the surface of the insulator when the lever is in the hidden position. The button is not higher than the end surface of the insulator near the operation end of the operation handle, so that the misoperation of releasing the stop arm of the button from the stop matching relation with the insulator or the button can be prevented.
Furthermore, the insulator is provided with a clamping hole, the button is provided with a stopping part which is used for stopping and matching with the hole wall of the clamping hole when the button moves so as to limit the button to be separated from the insulator, and the insulator is also provided with a button elastic part which props up the button and is arranged on the insulator. The button elastic piece can enable the button to automatically recover after being pressed down, and the situation that the blocking arm is blocked by the button to be matched with the insulator or the button in a blocking mode when the fuse tube is installed is avoided.
Further, the operating handle is slidably fitted on the insulator. The operation handle is convenient to mount and dismount.
Furthermore, the operating handle is provided with a stop piece which is matched with the insulator stop to limit the operating handle to be separated from the insulator when the operating handle is in the protruding position. The operating handle is prevented from being separated from the insulator under the elastic force of the elastic piece when moving to the protruding position.
The invention has the beneficial effects that: the operating handle is provided with a stop arm in stop fit with the insulator, the insulator is provided with a button for releasing the stop fit relation between the stop arm and the insulator to enable the operating handle to move towards the protruding position, the button releases the stop fit relation between the stop arm and the insulator through pushing the stop arm, when the protective sleeve of the fuse assembly is disassembled, the operating handle can move towards the protruding position only by pressing the button to enable the button to push the stop arm, no additional tool is needed, and the operation is simple. The problem of the fuse dismouting complex operation that exists among the prior art, have the limitation is solved.
The button is arranged on the insulator, the stop arm in stop fit with the button is arranged on the operating handle, the button is movably assembled on the insulator, the stop fit relation between the stop arm and the button is relieved by pushing the stop arm through the button, when the protective sleeve of the fuse assembly is disassembled, the operating handle can move towards the protruding position only by pushing the button to push the stop arm through the button, no additional tool is needed, and the operation is simple. The problem of the fuse dismouting complex operation that exists among the prior art, have the limitation is solved.
The fuse assembly adopts the following technical scheme:
the fuse tube assembly comprises a sheath and a fuse tube arranged in the sheath, the sheath comprises an insulator, a fuse tube mounting part is arranged on the insulator, an operating handle used for pulling the insulator out of the plug is movably assembled on the insulator, the movable stroke of the operating handle is provided with a hidden position hidden on the insulator and a protruding position protruding out of the insulator for an operator to pull, the insulator is also provided with an elastic element for applying acting force to the operating handle to enable the operating handle to protrude out of the insulator, the operating handle is provided with a stop arm which is in stop fit with the insulator when the operating handle is in the hidden position, the insulator is provided with a button which is used for releasing the stop fit relation between the stop arm and the insulator so as to enable the operating handle to move towards the protruding position, the button is movably assembled on the insulator and pushes the stop arm to move the stop arm so as to release the stop matching relationship between the stop arm and the insulator; or the operating handle is provided with a stop arm, the insulator is provided with a button which is in stop fit with the stop arm when the operating handle is in the hidden position, the button is movably assembled on the insulator so as to release the stop fit relation between the stop arm and the button when the operating handle moves towards the protruding position, and the button enables the stop arm to move by pushing the stop arm so as to release the stop fit relation between the stop arm and the button.
Furthermore, the stop arm is an elastic arm arranged on the operating handle, and the button enables the elastic arm to deform and move by pushing the elastic arm so as to release the stop matching relationship between the elastic arm and the insulator.
Furthermore, the button and/or the elastic arm are/is provided with a guide surface which guides the elastic arm to deform under the action of pushing force of the button so as to release the stop matching relationship between the elastic arm and the insulator.
Further, the guide surface is a guide slope.
Furthermore, the insulator is provided with a button mounting hole for mounting a button and an operating handle mounting hole for mounting an operating handle, the hole wall of the button mounting hole is provided with a limiting hole which is communicated with the button mounting hole and the operating handle mounting hole and is used for inserting the stop arm when the operating handle is in the hidden position, and the insulator is in stop fit with the stop arm through the hole wall of the limiting hole when the operating handle is in the hidden position.
Furthermore, the movable end of the stop arm is provided with a limit bump for inserting into the limit hole and a stop surface for stop-matching with the hole wall of the operation handle mounting hole when the limit bump is inserted into the limit hole.
Furthermore, the blocking arm is obliquely arranged, the fixed end of the blocking arm is far away from the operation end of the operation handle, and the movable end of the blocking arm is close to the operation end of the operation handle.
Further, an end surface of the button near the operation end of the lever is not higher than the surface of the insulator when the lever is in the hidden position.
Furthermore, the insulator is provided with a clamping hole, the button is provided with a stopping part which is used for stopping and matching with the hole wall of the clamping hole when the button moves so as to limit the button to be separated from the insulator, and the insulator is also provided with a button elastic part which props up the button and is arranged on the insulator.
Further, the operating handle is slidably fitted on the insulator.
Furthermore, the operating handle is provided with a stop piece which is matched with the insulator stop to limit the operating handle to be separated from the insulator when the operating handle is in the protruding position.
The plug adopts the following technical scheme:
the plug comprises a shell and a fuse assembly which is assembled in the shell in a sliding way, the fuse assembly comprises a sheath and a fuse arranged in the sheath, the sheath comprises an insulator, a protective tube mounting part is arranged on the insulator, an operating handle used for pulling the insulator out of the shell is movably assembled on the insulator, the movable stroke of the operating handle is provided with a hidden position hidden on the insulator and a protruding position protruding out of the insulator for an operator to pull, the insulator is also provided with an elastic element for applying acting force to the operating handle to enable the operating handle to protrude out of the insulator, the operating handle is provided with a stop arm which is in stop fit with the insulator when the operating handle is in the hidden position, the insulator is provided with a button which is used for releasing the stop fit relation between the stop arm and the insulator so as to enable the operating handle to move towards the protruding position, the button is movably assembled on the insulator and pushes the stop arm to move the stop arm so as to release the stop matching relationship between the stop arm and the insulator; or the operating handle is provided with a stop arm, the insulator is provided with a button which is in stop fit with the stop arm when the operating handle is in the hidden position, the button is movably assembled on the insulator so as to release the stop fit relation between the stop arm and the button when the operating handle moves towards the protruding position, and the button enables the stop arm to move by pushing the stop arm so as to release the stop fit relation between the stop arm and the button.
Furthermore, the stop arm is an elastic arm arranged on the operating handle, and the button enables the elastic arm to deform and move by pushing the elastic arm so as to release the stop matching relationship between the elastic arm and the insulator.
Furthermore, the button and/or the elastic arm are/is provided with a guide surface which guides the elastic arm to deform under the action of pushing force of the button so as to release the stop matching relationship between the elastic arm and the insulator.
Further, the guide surface is a guide slope.
Furthermore, the insulator is provided with a button mounting hole for mounting a button and an operating handle mounting hole for mounting an operating handle, the hole wall of the button mounting hole is provided with a limiting hole which is communicated with the button mounting hole and the operating handle mounting hole and is used for inserting the stop arm when the operating handle is in the hidden position, and the insulator is in stop fit with the stop arm through the hole wall of the limiting hole when the operating handle is in the hidden position.
Furthermore, the movable end of the stop arm is provided with a limit bump for inserting into the limit hole and a stop surface for stop-matching with the hole wall of the operation handle mounting hole when the limit bump is inserted into the limit hole.
Furthermore, the blocking arm is obliquely arranged, the fixed end of the blocking arm is far away from the operation end of the operation handle, and the movable end of the blocking arm is close to the operation end of the operation handle.
Further, an end surface of the button near the operation end of the lever is not higher than the surface of the insulator when the lever is in the hidden position.
Furthermore, the insulator is provided with a clamping hole, the button is provided with a stopping part which is used for stopping and matching with the hole wall of the clamping hole when the button moves so as to limit the button to be separated from the insulator, and the insulator is also provided with a button elastic part which props up the button and is arranged on the insulator.
Further, the operating handle is slidably fitted on the insulator.
Furthermore, the operating handle is provided with a stop piece which is matched with the insulator stop to limit the operating handle to be separated from the insulator when the operating handle is in the protruding position.
Drawings
FIG. 1 is a schematic diagram of a prior art fuse assembly;
FIG. 2 is a schematic view of the internal structure of FIG. 1;
FIG. 3 is a schematic view of the safety tube assembly of embodiment 1 of the plug of the present invention in normal use;
FIG. 4 is a schematic view of the embodiment 1 of the plug of the present invention with the handle of the safety tube assembly in a protruding position;
FIG. 5 is a schematic structural view of the rescue tube assembly of FIG. 3;
FIG. 6 is a schematic view of the internal structure of FIG. 5;
FIG. 7 is an enlarged view of a portion of FIG. 6 at A;
FIG. 8 is a schematic structural diagram of the button of FIG. 3;
FIG. 9 is a front view of the button of FIG. 3;
FIG. 10 is a top view of the button of FIG. 3;
FIG. 11 is a schematic view of the insulator of FIG. 3;
FIG. 12 is a front view of the insulator of FIG. 3;
FIG. 13 is a schematic view of a portion of a safety tube assembly according to an embodiment 13 of the plug of the present invention;
in the figure: 1-fuse tube, 2-insulator, 3-operating handle, 4-spring, 5-cylindrical pin, 10-fuse tube, 11-insulator, 12-operating handle, 13-spring, 14-pin shaft, 15-button, 16-elastic arm, 17-mounting surface, 18-limiting hole, 19-shell, 20-fuse tube component and 21-long waist hole; 22-torsion spring, 23-operating handle, 24-button, 25-elastic arm, 1101-clamping hole, 1501-button elastic piece, 1502-barb.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
As shown in fig. 6 and 7, in order to ensure the stability of the stop fit relationship between the operating handle 12 and the insulator 11 when the operating handle 12 is in the hidden position, the insulator 11 in this embodiment is provided with a button mounting hole for mounting the button 15 and an operating handle mounting hole for mounting the operating handle 12, the hole wall of the button mounting hole is provided with a limiting hole 18 for inserting the elastic arm 16 when the operating handle 12 is in the hidden position, and the insulator 11 is in stop fit with the elastic arm 16 through the hole wall of the limiting hole 18 when the operating handle 12 is in the hidden position. The button 15 releases the snap-fit relationship between the elastic arm 16 and the insulator 11 by pushing the elastic arm 16 to deform the elastic arm 16. In addition, considering that the elastic arm 16 may press against the button 15 when the wall of the stopper hole 18 is in stop engagement, the movable end of the elastic arm 16 in this embodiment is provided with a stopper projection for insertion into the stopper hole 18 and a stop surface for stop engagement with the wall of the operation lever mounting hole when the stopper projection is inserted into the stopper hole 18. Therefore, when the operating handle is in the hidden position, the elastic arm 16 is in stop fit with the hole wall of the limiting hole 18 and the hole wall of the operating handle mounting hole, the button 15 is prevented from being damaged due to stop fit of the elastic arm 16 and the button 15, and the service life of the sheath is prolonged. To facilitate the design and installation of the push button 15, the elastic arm 16 in this embodiment is disposed obliquely, and the fixed end of the elastic arm 16 is disposed away from the operation end of the operation handle 12, and the movable end of the elastic arm 16 is disposed close to the operation end of the operation handle 12.
As shown in fig. 7, in order to facilitate the release of the stop engagement between the elastic arm 16 and the insulator 11 by the button 15, the button 15 and the elastic arm 16 in this embodiment are provided with guide surfaces for guiding the elastic arm 16 to deform under the pushing force of the button 15 so as to release the stop engagement between the elastic arm 16 and the insulator 11. For the convenience of processing, the guide surface in this embodiment is a guide slope. In order to prevent the operating handle 12 from being unlocked and ejected by touching the button 15 by misoperation or other impacts, as shown in fig. 5, the end surface of the button 15 close to the operating end of the operating handle 12 is not higher than the end surface of the insulator 11 close to the operating end of the operating handle 12 when the operating handle 12 is in the hidden position in the embodiment. To avoid the stop engagement of the button 15 against the resilient arm 16 and the insulator 11 during installation of the fuse 10, the insulator 11 in this embodiment is provided with a button resilient member 1501 for urging the button 15 against the insulator 11. The button 15 is provided with a stop portion, as shown in fig. 8 to 10, the stop portion in this embodiment is barbs 1502 arranged on both sides of the button 15, a clipping hole 1101 shown in fig. 11 and 12 is correspondingly arranged on the insulator 11, and the button 15 is forcibly inserted into the button mounting hole through the barbs 1502, so that the barbs 1502 are positioned in the clipping hole 1101. The barbs 1502 may be in stop-fit with the walls of the snap holes 1101 to prevent the button 15 from backing out of the insulator 11 when the button is activated. In other embodiments, the stop portion of the button may also be a pin shaft that is forcibly mounted on the button, and the corresponding insulator is provided with a mounting hole for forcibly mounting the pin shaft on the button.
In addition, considering that the operating handle 12 may be pulled out of the insulator 11 by the elastic force of the spring 13 when the safety tube is removed, as shown in fig. 5, the operating handle 12 in this embodiment is provided with a stopper that is in stop fit with the insulator 11 when the operating handle 12 is in the protruding position, and the stopper in this embodiment is a pin 14 that is loaded on the operating handle 12. Meanwhile, the insulator 11 is provided with a long waist hole 21 for mounting and accommodating the pin 14, and the hole wall of the long waist hole 21 is matched with the pin 14 in a stopping way when the operating handle 12 is in a protruding position. When the safety tube 10 is removed, the operating handle 12 is held in the protruding position by the elastic force of the spring 13 and the stop cooperation of the pin 14 and the long waist hole 21, and the operator can pull the operating handle 12.
The specific disassembly and assembly process of the fuse assembly of the plug comprises the following steps: when the fuse 10 is mounted, the fuse 10 is mounted on the fuse mounting portion of the sheath of the fuse assembly 20, and then the fuse assembly 20 is slidably fitted into the housing 19. Then, the operating handle 12 is pressed to press the operating handle 12 into the operating handle mounting hole of the insulator 11, so that the elastic arm 16 is in blocking fit with the hole wall of the limiting hole 18 and the hole wall of the operating handle mounting hole, the operating handle 12 is in a hidden position of the insulator 11, then the shell 19 is installed, the fuse assembly 20 is in a state shown in fig. 3, and the installation of the fuse assembly 20 is completed. When the fuse assembly 20 is disassembled, the shell 19 is opened, the button 15 is pressed from the side of the mounting surface 17 of the insulator 11, the guiding inclined surface of the button pushes the guiding inclined surface of the elastic arm 16 in the downward movement process of the button 15, the elastic arm 16 is compressed and slides out from the limiting hole 18 to release the stopping matching and the relation between the insulator 11 and the elastic arm 16, and the operating handle 12 moves towards the protruding position. At this time, the lever 12 is ejected by the elastic force of the spring 13. The fuse tube attaching/detaching structure is in the state shown in fig. 4, and at this time, the fuse tube assembly 20 can be taken out from the housing 19 by pulling and pushing the operating handle 12, and the fuse tube 10 can be detached and replaced. In the process of pulling the operating handle 12, the pin 14 is in stop fit with the wall of the long kidney hole 21, so as to prevent the operating handle 12 from being separated from the insulator.
The above specific embodiment 1 is a preferred embodiment of the plug of the present invention, and the corresponding structure may be adjusted or simplified as needed, for example, the following embodiments may be adopted:
the plug comprises a shell and a fuse assembly slidably assembled in the shell, wherein the fuse assembly comprises a sheath and a fuse arranged in the sheath, the sheath comprises an insulator, a fuse mounting part is arranged on the insulator, an operating handle used for pulling the insulator out of the plug is movably assembled on the insulator, a hidden position hidden on the insulator and a protruding position protruding out of the insulator for an operator to pull are arranged in the moving stroke of the operating handle, an elastic part used for applying acting force to the operating handle to enable the operating handle to protrude out of the insulator is further arranged on the insulator, a stop arm matched with the insulator in a stop mode when the operating handle is in the hidden position is arranged on the operating handle, and the operating handle is kept in the hidden position under the stop action of the stop arm and the insulator. The insulator is provided with a button for releasing the blocking matching relationship between the stop arm and the insulator to enable the operating handle to move towards the protruding position, and the button is movably assembled on the insulator and enables the stop arm to move by pushing the stop arm so as to release the blocking matching relationship between the stop arm and the insulator. The push button releases the stop matching relation between the stop arm and the insulator through pushing the stop arm, when the protective sleeve of the fuse tube assembly is disassembled, the operating handle can move towards the protruding position only by pressing the push button to push the stop arm, no additional tool is needed, and the operation is simple. The problem of the fuse dismouting complex operation that exists among the prior art, have the limitation is solved.
Of course, the arm can also be directly matched with the button stop to keep the operating handle in the hidden position, the arm is arranged on the operating handle, the button matched with the arm stop when the operating handle is in the hidden position is arranged on the insulator, the button is movably assembled on the insulator to release the stop matching relationship between the arm and the button when the operating handle moves towards the protruding position, and the button enables the arm stop to release the stop matching relationship between the arm and the button by pushing the arm stop. The stop matching relation between the stop arm and the button is relieved by pushing the stop arm through the button, when the protective sleeve of the fuse assembly is disassembled, the operating handle can move towards the protruding position only by pressing the button to push the stop arm through pushing the button, no additional tool is needed, and the operation is simple. The problem of the fuse dismouting complex operation that exists among the prior art, have the limitation is solved.
Embodiment 3 of the plug of the present invention, which is a further optimization of embodiment 2 of the plug of the present invention, is to facilitate the movement of the blocking arm when the blocking arm is pushed by the push button to release the blocking engagement between the blocking arm and the insulator, and to make the protective sleeve of the fuse assembly simple in structure and convenient to assemble. The stop arm in this embodiment is an elastic arm disposed on the operation handle, and the button pushes the elastic arm to deform the elastic arm so as to release the stop fit relationship between the elastic arm and the insulator. In other embodiments, the stop arm may also be a rigid arm, the rigid arm is mounted on the operating handle through an elastic element, and the rigid arm is pushed by the button to make the rigid arm move in a telescopic manner along a set direction of the insulator so as to release the stop-fit relationship between the stop arm and the insulator.
As a further optimization of embodiment 3 of the plug of the present invention, in order to facilitate the release of the stop-fitting relationship between the elastic arm and the insulator by the button, embodiment 4 of the plug of the present invention provides that the button and/or the elastic arm in this embodiment is provided with a guide surface for guiding the elastic arm to deform under the pushing force of the button so as to release the stop-fitting relationship between the elastic arm and the insulator. In other embodiments, no guide surface may be provided.
As a further optimization of embodiment 4 of the plug of the present invention, embodiment 5 of the plug of the present invention is configured such that the guide surface in this embodiment is a guide slope surface in order to facilitate the processing of the guide surface. In other embodiments the guide surface may also be an arcuate surface.
As a further optimization of the plug of the present invention in embodiment 2 or 3 or 4 or 5, in order to ensure stability of the operating handle when the operating handle is in the hidden position, in this embodiment, the insulator is provided with a button mounting hole for mounting the button and an operating handle mounting hole for mounting the operating handle, a limiting hole, which is communicated with the button mounting hole and the operating handle mounting hole and into which the blocking arm is inserted when the operating handle is in the hidden position, is provided on a wall of the button mounting hole, and the insulator is in blocking fit with the blocking arm through a wall of the limiting hole when the operating handle is in the hidden position.
As a further optimization of embodiment 6 of the plug of the present invention, in order to prevent the stop arm and the button from being matched and damaging the button and to increase the service life of the sheath, embodiment 7 of the plug of the present invention provides that the movable end of the stop arm in this embodiment is provided with a limit protrusion for inserting into the limit hole and a stop surface for being matched and stopped with the hole wall of the operation handle installation hole when the limit protrusion is inserted into the limit hole. Therefore, when the operating handle is in the hidden position, the stop arm is in stop fit with the hole wall of the limiting hole and the hole wall of the operating handle mounting hole. In other embodiments, the movable end of the blocking arm can be provided with only a limiting lug for being inserted into the limiting hole.
As a further optimization of the embodiment 3, 4 or 5 of the plug of the present invention, in order to facilitate the design and installation of the button and the pushing of the button to the blocking arm, the blocking arm in this embodiment is disposed obliquely, the fixed end of the blocking arm is disposed away from the operation end of the operation handle, and the movable end of the blocking arm is disposed close to the operation end of the operation handle. In other embodiments, the fixed end of the arm can be disposed proximate to the operating end of the lever and the movable end of the arm can be disposed distal to the operating end of the lever.
As a further optimization of embodiment 2 or 3 or 4 or 5 of the plug of the present invention, embodiment 9 of the plug of the present invention is such that, in order to prevent the erroneous operation of the button releasing arm from the stopper-fitting relationship with the insulator or the button, the end face of the button near the operating end of the operating lever is not higher than the end face of the insulator near the operating end of the operating lever when the operating lever is in the hidden position. In other embodiments, the end surface of the button near the operating end of the lever may be higher than the end surface of the insulator near the operating end of the lever when the lever is in the stowed position.
As a further optimization of embodiment 2 or 3 or 4 or 5 of the plug of the present invention, embodiment 10 of the plug of the present invention takes into account that the button may block the stop arm from engaging with the insulator or the button stop when the fuse is installed, and the button may also be disengaged from the insulator. The button elastic piece can enable the button to automatically recover after being pressed down, so that the situation that the blocking arm is blocked by the button to be matched with the insulator or the button in a blocking mode when the safety tube is installed on the button is avoided, and the blocking part can also effectively prevent the button from being separated from the insulator. In other embodiments, the button spring may not be provided.
As a further optimization of embodiment 2, 3, 4 or 5 of the plug of the present invention, in order to prevent the operating lever from being separated from the insulator by the elastic force of the elastic member when the operating lever moves toward the protruding position, embodiment 12 of the plug of the present invention is configured such that the operating lever in this embodiment is provided with a stopper for being in stopper engagement with the insulator when the operating lever moves toward the protruding position, the insulator is provided with an accommodating hole for accommodating the stopper, and a hole wall of the accommodating hole is for being in stopper engagement with the stopper when the operating lever moves toward the protruding position. In other embodiments, no stop member may be provided.
The fuse assembly of the present invention has the same structure as that described in embodiments 1 to 13 of the plug, and thus, the detailed description thereof is omitted.
The embodiments of the protective sheath for a fuse assembly according to the present invention are the same as the protective sheaths described in embodiments 1 to 13 of the plug, and are not described again.
Claims (30)
1. The protective sleeve comprises an insulator, a protective tube mounting part is arranged on the insulator, an operating handle used for pulling the insulator out of a plug is movably assembled on the insulator, a hidden position hidden on the insulator and a protruding position protruding out of the insulator for an operator to pull are arranged in the moving stroke of the operating handle, an elastic piece used for applying acting force to the operating handle to enable the operating handle to protrude out of the insulator is further arranged on the insulator, the protective sleeve is characterized in that a blocking arm matched with the insulator in a blocking mode when the operating handle is in the hidden position is arranged on the operating handle, a button used for releasing the blocking matching relation of the blocking arm and the insulator to enable the operating handle to move towards the protruding position is arranged on the insulator, and the button is movably assembled on the insulator and enables the blocking arm to move through pushing the blocking arm to release the blocking matching relation of the blocking arm and the insulator; or the operating handle is provided with a stop arm, the insulator is provided with a button which is in stop fit with the stop arm when the operating handle is in the hidden position, the button is movably assembled on the insulator so as to remove the stop fit relation between the stop arm and the button when the operating handle moves towards the protruding position, and the button enables the stop arm to move by pushing the stop arm so as to remove the stop fit relation between the stop arm and the button;
the insulator is provided with a button mounting hole for mounting a button and an operating handle mounting hole for mounting an operating handle, the hole wall of the button mounting hole is provided with a limiting hole which is communicated with the button mounting hole and the operating handle mounting hole and is used for inserting the stop arm when the operating handle is in the hidden position, and the insulator is in stop fit with the stop arm through the hole wall of the limiting hole when the operating handle is in the hidden position.
2. The fuse assembly sheath of claim 1, wherein the stop arm is a resilient arm disposed on the handle, and wherein the button is configured to release the resilient arm from the stop engagement with the insulator by pushing the resilient arm.
3. The fuse assembly sheath of claim 2, wherein the button and/or the resilient arm includes a guide surface for guiding the resilient arm to deform under the pushing force of the button to release the resilient arm from retaining engagement with the insulator.
4. A fuse assembly protector as claimed in claim 3 wherein the guide surface is a guide ramp.
5. The protective sheath of a fuse assembly according to any one of claims 1 to 4, wherein the movable end of the arm is provided with a limit projection for insertion into the limit hole and a stop surface for stop-engagement with the wall of the installation hole of the operating lever when the limit projection is inserted into the limit hole.
6. A fuse assembly protector according to claim 2, 3 or 4 wherein the arm is inclined with the fixed end of the arm disposed away from the operative end of the handle and the movable end of the arm disposed adjacent the operative end of the handle.
7. The fuse assembly sheath of any one of claims 1-4, wherein an end surface of the button proximate the operating end of the lever is no higher than a surface of the insulator when the lever is in the stowed position.
8. The protective sheath of a fuse assembly according to any one of claims 1 to 4, wherein the insulator has a snap hole, the button has a stopper portion for stopping engagement with a wall of the snap hole when the button is activated to restrict the button from coming off the insulator, and the insulator further has a button resilient member for urging the button against the insulator.
9. The fuse assembly sheath of any one of claims 1-4, wherein the lever is a sliding fit on the insulator.
10. A fuse assembly protector according to any one of claims 1 to 4 in which the operating handle is provided with a stop which cooperates with the insulator stop when the operating handle is in the extended position to limit removal of the operating handle from the insulator.
11. The fuse tube assembly comprises a sheath and a fuse tube arranged in the sheath, the sheath comprises an insulator, a fuse tube mounting part is arranged on the insulator, an operating handle used for pulling the insulator out of a plug is movably assembled on the insulator, the movable stroke of the operating handle is provided with a hidden position hidden on the insulator and a protruding position protruding out of the insulator for an operator to pull, the insulator is also provided with an elastic element for applying acting force to the operating handle to enable the operating handle to protrude out of the insulator, it is characterized in that the operating handle is provided with a stop arm which is matched with the stop of the insulator when the operating handle is in a hidden position, the insulator is provided with a button for releasing the blocking matching relationship between the blocking arm and the insulator to enable the operating handle to move towards the protruding position, the button is movably assembled on the insulator and pushes the stop arm to move the stop arm so as to release the stop matching relationship between the stop arm and the insulator; or the operating handle is provided with a stop arm, the insulator is provided with a button which is in stop fit with the stop arm when the operating handle is in the hidden position, the button is movably assembled on the insulator so as to remove the stop fit relation between the stop arm and the button when the operating handle moves towards the protruding position, and the button enables the stop arm to move by pushing the stop arm so as to remove the stop fit relation between the stop arm and the button;
the insulator is provided with a button mounting hole for mounting a button and an operating handle mounting hole for mounting an operating handle, the hole wall of the button mounting hole is provided with a limiting hole which is communicated with the button mounting hole and the operating handle mounting hole and is used for inserting the stop arm when the operating handle is in the hidden position, and the insulator is in stop fit with the stop arm through the hole wall of the limiting hole when the operating handle is in the hidden position.
12. The fuse assembly of claim 11, wherein the latch arm is a resilient arm disposed on the operating handle, and wherein the button is operable to deform the resilient arm by pushing the resilient arm to release the resilient arm from retaining engagement with the insulator.
13. The fuse assembly of claim 12, wherein the button and/or the resilient arm includes a guide surface for guiding the resilient arm to deform under a pushing force of the button to release the resilient arm from the retaining engagement with the insulator.
14. The fuse assembly of claim 13, wherein said guide surface is a guide ramp.
15. The fuse assembly of any one of claims 11-14, wherein the movable end of the arm is provided with a stop protrusion for inserting into the stop hole and a stop surface for stop-engaging with the wall of the installation hole of the operating handle when the stop protrusion is inserted into the stop hole.
16. The fuse assembly of claim 12, 13 or 14, wherein the arm is angled such that the fixed end of the arm is disposed away from the operative end of the lever and the movable end of the arm is disposed proximate the operative end of the lever.
17. The fuse assembly of any one of claims 11-14, wherein an end surface of the button proximate the operating end of the lever is no higher than a surface of the insulator when the lever is in the stowed position.
18. The fuse assembly of any one of claims 11-14, wherein the insulator has a snap hole, the button has a stop portion for engaging the wall of the snap hole to limit the button from moving out of the insulator when the button is actuated, and the insulator further has a button spring for biasing the button against the insulator.
19. The fuse assembly of any one of claims 11-14, wherein said operating handle is slidably mounted on an insulator.
20. The fuse assembly of any one of claims 11-14, wherein the operating handle is provided with a stop member that cooperates with the insulator stop when the operating handle is in the extended position to limit removal of the operating handle from the insulator.
21. The plug comprises a shell and a fuse assembly which is assembled in the shell in a sliding mode, the fuse assembly comprises a sheath and a fuse arranged in the sheath, the sheath comprises an insulator, a fuse mounting part is arranged on the insulator, an operating handle used for pulling the insulator out of the shell is movably assembled on the insulator, a hidden position hidden on the insulator and a protruding position protruding out of the insulator for an operator to pull are arranged in the moving stroke of the operating handle, an elastic piece used for applying acting force to the operating handle to enable the operating handle to protrude out of the insulator is further arranged on the insulator, the plug is characterized in that a blocking arm matched with the insulator in a blocking mode when the operating handle is located at the hidden position is arranged on the operating handle, a button used for releasing the blocking matching relation between the blocking arm and the insulator to enable the operating handle to move towards the protruding position is arranged on the insulator, and the button is movably assembled on the insulator and enables the blocking arm to move through pushing the blocking arm to release the blocking matching relation between the blocking; or the operating handle is provided with a stop arm, the insulator is provided with a button which is in stop fit with the stop arm when the operating handle is in the hidden position, the button is movably assembled on the insulator so as to remove the stop fit relation between the stop arm and the button when the operating handle moves towards the protruding position, and the button enables the stop arm to move by pushing the stop arm so as to remove the stop fit relation between the stop arm and the button;
the insulator is provided with a button mounting hole for mounting a button and an operating handle mounting hole for mounting an operating handle, the hole wall of the button mounting hole is provided with a limiting hole which is communicated with the button mounting hole and the operating handle mounting hole and is used for inserting the stop arm when the operating handle is in the hidden position, and the insulator is in stop fit with the stop arm through the hole wall of the limiting hole when the operating handle is in the hidden position.
22. The plug of claim 21 wherein the stop arm is a spring arm disposed on the lever, and wherein the button is operable to deform the spring arm by pushing the spring arm to release the spring arm from the retaining engagement with the insulator.
23. A plug according to claim 22, wherein the button and/or the resilient arm is provided with a guide surface for guiding the resilient arm to deform under the pushing force of the button to release the resilient arm from the retaining engagement with the insulator.
24. The plug of claim 23 wherein said guide surface is a guide ramp.
25. The plug according to any one of claims 21 to 24, wherein the movable end of the arm is provided with a limit projection for insertion into the limit hole and a stop surface for stop-engagement with the wall of the mounting hole of the lever when the limit projection is inserted into the limit hole.
26. A plug according to claim 22, 23 or 24, wherein the arm is inclined with the fixed end of the arm disposed away from the operative end of the lever and the movable end of the arm disposed adjacent the operative end of the lever.
27. A plug according to any one of claims 21 to 24 wherein the end face of the button adjacent the operating end of the lever is no higher than the surface of the insulator when the lever is in the stowed position.
28. A plug according to any one of claims 21 to 24 wherein the insulator has a latching hole and the button has a stop portion for engaging the wall of the latching hole to limit removal of the button from the insulator when the button is actuated, the insulator further having a button resilient member for urging the button against the insulator.
29. A plug according to any one of claims 21 to 24, wherein the operating lever is a sliding fit on the insulator.
30. A plug according to any one of claims 21 to 24 wherein the operating lever is provided with a stop which cooperates with the insulator stop when the operating lever is in the extended position to limit removal of the operating lever from the insulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810168273.5A CN110211853B (en) | 2018-02-28 | 2018-02-28 | Plug, fuse assembly thereof and fuse assembly sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810168273.5A CN110211853B (en) | 2018-02-28 | 2018-02-28 | Plug, fuse assembly thereof and fuse assembly sheath |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110211853A CN110211853A (en) | 2019-09-06 |
| CN110211853B true CN110211853B (en) | 2021-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810168273.5A Active CN110211853B (en) | 2018-02-28 | 2018-02-28 | Plug, fuse assembly thereof and fuse assembly sheath |
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| Country | Link |
|---|---|
| CN (1) | CN110211853B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114678237B (en) * | 2021-12-20 | 2024-05-17 | 国网上海市电力公司 | Pin shaft for circuit breaker, arc extinguishing chamber using pin shaft and circuit breaker |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5659282A (en) * | 1994-08-30 | 1997-08-19 | Smk Co., Ltd. | Cylindrical fuse holder with a socket movable axially in the holder |
| CN204946846U (en) * | 2015-09-21 | 2016-01-06 | 安费诺商用电子产品(成都)有限公司 | The installation sleeve assembly of replaceable fuse tube |
-
2018
- 2018-02-28 CN CN201810168273.5A patent/CN110211853B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5659282A (en) * | 1994-08-30 | 1997-08-19 | Smk Co., Ltd. | Cylindrical fuse holder with a socket movable axially in the holder |
| CN204946846U (en) * | 2015-09-21 | 2016-01-06 | 安费诺商用电子产品(成都)有限公司 | The installation sleeve assembly of replaceable fuse tube |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110211853A (en) | 2019-09-06 |
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