CN211743028U

CN211743028U - Safety knife switch

Info

Publication number: CN211743028U
Application number: CN202020112366.9U
Authority: CN
Inventors: 张之伟; 王志金; 李洪飞
Original assignee: Nanjing Dingzhu Electric Power Equipment Engineering Co ltd
Current assignee: Nanjing Dingzhu Electric Power Equipment Engineering Co ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-10-23
Anticipated expiration: 2030-01-17

Abstract

The utility model discloses a safety knife switch, which comprises a base, a knife switch hinged on the base and an insulating block connected with the knife switch, and further comprises a telescopic rod connected with the insulating block, a handle connected with the telescopic rod, an upper box cover and a lower box cover arranged on the base in a sliding way, baffles arranged at two sides of the top wall of the base and a support plate connected with one of the baffles, wherein a protective space is formed by enclosing the support plate, the upper box cover, the lower box cover and the opposite side walls of the two baffles; this plug-in strip conveniently overhauls, and through setting up the telescopic link, has prolonged the distance between handle and the plug-in strip switch, avoids taking place the danger of electric shock.

Description

Safety knife switch

Technical Field

The utility model relates to a knife switch's technical field, in particular to safe knife switch.

Background

Knife switches, also known as knife switches, are generally used in ac and dc low voltage circuits that do not require frequent disconnection and closing, and whose operating current cannot exceed a rated value at a rated voltage. In a machine tool, a knife switch is mainly used as a power switch and is generally used for switching on or off the working current of a motor.

The prior Chinese patent with the publication number of CN206040493U discloses a safety knife switch, which comprises a shield, a base, an upper connecting end and a lower connecting end for connecting wires, a safety disc fixedly connected with the lower connecting end, a bracket fixedly connected with the safety disc, a knife hinged with the bracket, a contact and an annular snap spring. When the two copper sheets of the contact are loosened outwards, the two copper sheets can be tightly pressed together by the annular clamp spring, so that the safety performance of the circuit is improved.

However, the above technical solutions have the following disadvantages: the insulating handle of the knife switch is short, so that people have to approach the knife switch in a short distance when using the knife switch, and sometimes the knife switch can generate electric sparks when in use, so that the risk of electric shock is caused; and when overhauing the knife switch, need pull down the guard shield completely and just can overhaul, consuming time is hard, overhauls inefficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a safe knife switch, its advantage is: by arranging the telescopic rod, the distance between the handle and the knife switch is prolonged, and the danger of electric shock is avoided when the knife switch is switched on or switched off; meanwhile, the switch blade can be overhauled without disassembling the upper box cover and the lower box cover, and the overhauling efficiency is improved.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the safety knife switch comprises a base, a knife switch hinged on the base, an insulating block connected with the knife switch, a telescopic rod connected with the insulating block, a handle connected with the telescopic rod, an upper box cover and a lower box cover arranged on the base in a sliding manner, baffles arranged on two sides of the top wall of the base and a support plate connected with one of the baffles, wherein a protective space is formed between the support plate, the upper box cover, the lower box cover and opposite side walls of the two baffles in a surrounding manner, a movable opening is formed in the top wall of the upper box cover, an opening I is formed between the inner wall of the movable opening and two side walls of the support plate in a surrounding manner, an opening II corresponding to the opening I is arranged on the top wall of the upper box cover, the knife switch moves in the opening I and the opening II, an inner chute and an outer chute for the upper box cover and the lower box cover to slide are respectively arranged on the top wall of the base along the length direction of the top wall of the base, and the side, The lower box cover is fixed on the locking assembly in the inner sliding groove, and the insulating block is provided with a positioning piece for fixing the handle.

Through above-mentioned technical scheme, the setting of interior spout and outer spout can slide lower lid to the below of supreme lid, perhaps will go up the lid and slide to the top of lid down to the personnel overhaul different positions on to the base.

After the maintenance is finished, the upper box cover and the lower box cover are fixed by the locking assembly; then the handle is pulled to elongate the telescopic rod, so that the knife switch can be opened and closed; due to the arrangement of the handle and the telescopic rod, after the distance between the handle and the knife switch is increased and the switch is opened and closed, the handle is pushed, so that the telescopic rod is retracted, and the handle is fixed by using the positioning piece; the installation knife switch adopting the structure can prevent the danger of electric shock of personnel when the knife switch is opened and closed and the spark phenomenon occurs; meanwhile, the switch blade can be overhauled without disassembling the upper box cover and the lower box cover, and the overhauling efficiency is improved.

The utility model discloses further set up to: locking assembly includes the inserted block, slides and sets up a plurality of first sliders in outer spout, slide a plurality of second sliders that set up in the spout including, and is a plurality of first slider and second slider equidistant range respectively are at the lower tip lateral wall of last lid and lower lid, the lateral wall of going up lid, lower lid all is equipped with the through-hole, the through-hole is linked together with interior spout, outer spout respectively, the inserted block is the cunning in the through-hole, the cell wall of interior spout is equipped with the slot corresponding with the through-hole, the lateral wall of base is equipped with the regulating part that the drive inserted block inserted through-hole, slot in proper order.

Through the technical scheme, the arrangement of the first sliding block and the second sliding block has a limiting effect on the sliding of the upper box cover and the lower box cover, so that the stability of the sliding process of the upper box cover and the lower box cover is improved; utilize the regulating part to pass the plug-in block and insert in the slot, improved the stability fixed to last lid and lower lid.

The utility model discloses further set up to: the regulating part is including rotating the nut that sets up at the base outer wall, the screw rod that links to each other with the inserted block and setting up the stopper on the through-hole pore wall, the lateral wall of screw rod is equipped with the spacing groove that supplies the stopper to slide along its length direction, the one end that the inserted block was kept away from to the screw rod stretches out outside the through-hole and with nut threaded connection.

According to the technical scheme, during adjustment, the nut is rotated, and the limiting groove has a limiting effect on movement of the limiting block, so that the screw rod is driven to slide, the insertion block is driven to penetrate through the through hole and be inserted into the insertion groove, and the upper box cover and the lower box cover are fixed; this adjustment mode, easy operation makes things convenient for quick lid and the lower lid of sliding of personnel, has improved maintenance efficiency.

The utility model discloses further set up to: the cell wall of slot is equipped with a plurality of semicircle draw-in grooves, the lateral wall equipartition of inserted block is equipped with a plurality of elastic projection with semicircle draw-in groove matched with.

Through above-mentioned technical scheme, the cooperation of elastic convex block and semicircle draw-in groove has increased the frictional force between inserted block and the slot cell wall, and elastic convex block is the rubber material, has good wear resistance and anti-skidding effect, and then has improved and has stably fixed the inserted block in the slot, has further strengthened the stability fixed to last lid and lower lid.

The utility model discloses further set up to: the locating piece comprises two locating rods oppositely arranged on the insulating block and a silica gel ball arranged in a hemispherical shape, the silica gel ball is connected with the locating rods, a locating hole for the silica gel ball to penetrate through is formed in the handle, and the diameter size of the silica gel ball is larger than the aperture size of the locating hole.

Through the technical scheme, the handle is driven to move towards the direction far away from the insulating block, and the handle can be pulled out due to certain elasticity and deformation capacity of the silica gel ball; otherwise, the handle is pushed to approach the direction of the insulating block, and the silica gel ball is extruded in the positioning hole, so that the silica gel ball penetrates through the positioning hole, and the handle is positioned; the setting of silica gel ball and locating lever makes things convenient for personnel according to the user demand, quick handle of taking out.

The utility model discloses further set up to: the handle is provided with a rubber non-slip mat.

Through above-mentioned technical scheme, the setting of rubber slipmat has increased the staff and has held handle comfort level to stable pulling handle.

The utility model discloses further set up to: the roof of lower lid is equipped with the guide block, the diapire of extension board is equipped with the guide way that supplies the guide block to slide along its length direction.

Through above-mentioned technical scheme, the cooperation of guide block and guide way plays spacing and guide effect to sliding of lower box cover, has improved the stability of lower box cover process of sliding.

The utility model discloses further set up to: the back-to-back side walls of the upper box cover and the lower box cover are respectively provided with a first magnetic rubber sticker, the opposite side walls of the two baffles are respectively provided with a second magnetic rubber sticker, and the first magnetic rubber stickers and the second magnetic rubber stickers are attached to each other.

Through above-mentioned technical scheme, first magnetism rubber subsides closely laminate with second magnetism rubber subsides, increased the inseparable degree of laminating between upper cover, lower box cover respectively and the both sides baffle, and then improved the stability fixed to upper cover, lower box cover.

To sum up, the utility model discloses following beneficial effect has:

1. by arranging the telescopic rod, the distance between the hand and the knife switch is increased, so that when the knife is switched on or switched off and a spark phenomenon occurs, the danger of electric shock of personnel is effectively avoided; meanwhile, due to the arrangement of the inner sliding groove and the outer sliding groove, a person can conveniently slide the upper box cover above the lower box cover or slide the lower box cover above the upper box cover and the lower box cover, so that the person can conveniently overhaul different positions on the base or the knife switch, and the overhaul efficiency is improved;

2. the nut is rotated, and the limiting groove has a limiting effect on the movement of the limiting block, so that the screw rod is driven to slide, the insertion block is driven to penetrate through the through hole and be inserted into the insertion groove, and the upper box cover and the lower box cover are fixed; the adjusting mode is simple to operate, and the upper box cover and the lower box cover can be conveniently and quickly slid by personnel, so that the overhauling efficiency is improved;

3. the handle is pushed to approach the direction of the insulating block, and the silica gel ball is extruded in the positioning hole due to certain elasticity and deformation capacity of the silica gel ball, so that the silica gel ball penetrates through the positioning hole, and the positioning of the handle is realized; the setting of silica gel ball and locating lever makes things convenient for personnel according to the user demand, quick handle of taking out.

Drawings

Fig. 1 is a schematic view of the overall structure of the present embodiment.

Fig. 2 is an exploded structure diagram of the present embodiment.

Fig. 3 is a schematic sectional structure diagram of the present embodiment.

Fig. 4 is an enlarged schematic structural view for embodying the portion a in fig. 3.

Reference numerals: 1. a base; 2. a knife switch; 3. an insulating block; 4. a telescopic rod; 5. a handle; 6. an upper box cover; 7. a lower box cover; 8. protecting the space; 9. a movable opening; 10. a first opening; 11. a second opening; 12. an inner chute; 13. an outer chute; 14. a locking assembly; 141. inserting a block; 142. a first slider; 143. a second slider; 144. a through groove; 145. a through hole; 146. a slot; 15. an adjustment member; 151. a nut; 152. a screw; 153. a limiting block; 154. a limiting groove; 16. a positioning member; 161. positioning a rod; 162. a silica gel ball; 163. positioning holes; 17. a semicircular clamping groove; 18. an elastic bump; 19. a rubber non-slip mat; 20. a guide block; 21. a guide groove; 22. a first magnetic rubber sticker; 23. a second magnetic rubber sticker; 24. mounting a plate; 25. a bolt; 26. a baffle plate; 27. and (4) a support plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

the utility model provides a safe switch blade, refers to figure 1, including the base 1 that is the rectangle setting, the articulated switch blade 2 that is equipped with on the base 1, the articulated one end of keeping away from of switch blade 2 is connected with insulating block 3.

Referring to fig. 1, the insulating block 3 is connected with a telescopic rod 4, one end of the telescopic rod 4, which is far away from the insulating block 3, is provided with a handle 5, and the insulating block 3 is provided with a positioning part 16 for fixing the handle 5. The handle 5 is arranged in an arc shape, the rubber anti-slip pad 19 is arranged on the handle 5, so that the comfort level of a hand holding the handle 5 is increased, the telescopic rod 4 can be pulled to a proper length, the switch knife 2 can be pulled to be opened and closed, the distance between the hand and the base 1 is increased due to the arrangement of the telescopic rod 4, and the electric shock phenomenon is avoided; after the opening and closing are completed, the handle 5 is pushed, so that the telescopic rod 4 is compressed, and the handle 5 can be fixed by using the positioning piece 16.

Referring to fig. 1 and 2, an upper box cover 6 and a lower box cover 7 are slidably arranged on a base 1 along the length direction of the base 1, baffles 26 are arranged on the base 1 and located on two sides of the upper box cover 6 and the lower box cover 7, a support plate 27 is arranged on one baffle 26 facing the top side wall of the upper box cover 6, a movable opening 9 is arranged on the top wall of the upper box cover 6, the upper box cover 6 is divided into two parts by the movable opening 9, an opening I10 is formed between the side wall of the movable opening 9 and two side walls of the support plate 27 in a surrounding mode, the length direction of the opening I10 is the length direction of the base 1, an opening II 11 corresponding to the opening I10 is arranged on the top wall of the lower box cover 7, and a switch blade 2 moves in the opening I.

The two sides of the top wall of the base 1 are respectively provided with an inner sliding groove 12 and an outer sliding groove 13 along the length direction, the two side ends of the upper box cover 6 respectively slide in the outer sliding grooves 13, the two side ends of the lower box cover 7 respectively slide in the inner sliding grooves 12, the side walls of the base 1 are respectively provided with a locking component 14 which fixes the upper box cover 6 in the outer sliding grooves 13 and the lower box cover 7 in the inner sliding grooves 12, and the fixation of the box cover is realized. The setting of interior spout 12 and outer spout 13 conveniently slides and goes up lid 6 and lower lid 7 to suitable position to overhaul the part of different positions on the base 1, improved maintenance efficiency.

Referring to fig. 2, the positioning element 16 includes two positioning rods 161 oppositely disposed on the insulating block 3 and a silicon ball 162 disposed in a hemispherical shape, the silicon ball 162 is disposed at one end of the positioning rod 161 away from the insulating block 3, a positioning hole 163 for the silicon ball 162 to pass through is disposed on the handle 5, and a diameter of the silicon ball 162 is greater than an aperture of the positioning hole 163; the handle 5 is driven to move towards the direction far away from the insulating block 3, and the handle 5 can be pulled out due to certain elasticity and deformation capacity of the silica gel ball 162; on the contrary, the handle 5 is pushed to approach the insulating block 3, and the silicone ball 162 is extruded in the positioning hole 163, so that the silicone ball 162 penetrates through the positioning hole 163, and the positioning of the handle 5 is realized; the setting of silica gel ball 162 and locating lever 161 makes things convenient for personnel as required, quick taking out handle 5.

Referring to fig. 2, the opposite side walls of the two baffles 26 are respectively provided with an installation plate 24 extending outwards, the installation plates 24 are fixed on the base 1 through screws, and the two ends of the inner sliding groove 12 and the outer sliding groove 13 are respectively penetrated through the end walls of the two sides of the base 1, so that the detachable connection of the upper box cover 6, the lower box cover 7 and the baffles 26 is realized, and the overhaul of elements on the base 1 is facilitated.

Referring to fig. 2, the side walls of the upper box cover 6 and the lower box cover 7 which deviate from each other are provided with first magnetic rubber stickers 22, the opposite side walls of the two baffles 26 are provided with second magnetic rubber stickers 23, the first magnetic rubber stickers 22 and the second magnetic rubber stickers 23 are tightly attached, the tightness of the upper box cover 6 and the tightness of the lower box cover 7 which are respectively attached to the baffles 26 on the two sides are increased, and the stability of the upper box cover 6 and the lower box cover 7 which are fixed is further improved.

Referring to fig. 2 and 3, the bottom wall of the support plate 27 is provided with a guide groove 21 along the length direction thereof, the top wall of the lower box cover 7 is provided with a guide block 20 sliding in the guide groove 21, and the guide block 20 and the guide groove 21 are matched to limit and guide the sliding of the lower box cover 7, so that the stability of the sliding process of the lower box cover 7 is improved.

Referring to fig. 2 and 4, the locking assembly 14 includes an insertion block 141, a first sliding block 142 and a second sliding block 143, the first sliding block 142 is disposed in the outer sliding groove 13 in a relatively sliding manner, the second sliding block 143 is disposed in the inner sliding groove 12 in a relatively sliding manner, the two first sliding blocks 142 are disposed on the end side wall of the upper case cover 6 in a relatively sliding manner, the two second sliding blocks 143 are fixed on the end side wall of the lower case cover 7, the first sliding block 142 and the second sliding block 143 are disposed to limit the sliding of the upper case cover 6 and the lower case cover 7, and the stability of the sliding process of the upper case cover 6 and the lower case cover 7 is improved.

The side wall of the upper box cover 6 positioned in the outer sliding groove 13 and the side wall of the lower box cover 7 positioned in the inner sliding groove 12 are both provided with through holes 145, the groove wall of the inner sliding groove 12 is provided with slots 146 corresponding to the through holes 145, the side wall of the base 1 is provided with driving insertion blocks 141 which sequentially penetrate through the through holes 145 and the adjusting pieces 15 in the slots 146, and therefore the stability of fixing the upper box cover 6 and the lower box cover 7 is improved.

Referring to fig. 4, the adjusting member 15 includes a nut 151 rotatably disposed on an outer wall of the base 1, a screw 152 connected to the insert block 141, and a limit block 153 disposed on a wall of the through hole 145, a limit groove 154 for allowing the limit block 153 to slide is disposed on a side wall of the screw 152 along a length direction thereof, and an end of the screw 152 far away from the insert block 141 extends out of the through hole 145 and is in threaded connection with the nut 151. During adjustment, the nut 151 is rotated, and the limiting groove 154 has a limiting effect on the movement of the limiting block 153, so that the screw 152 is driven to slide, the insertion block 141 is driven to penetrate through the through hole 145 and to be inserted into the slot 146, and the upper box cover 6 and the lower box cover 7 are fixed; this adjustment mode, easy operation makes things convenient for quick lid 6 and lower lid 7 of going up of sliding of personnel, has improved maintenance efficiency.

Referring to fig. 4, the slot wall of the slot 146 is provided with a plurality of semicircular slots 17, and the sidewall of the insert block 141 is uniformly provided with a plurality of elastic protrusions 18 matched with the semicircular slots 17. The elastic lug 18 is made of rubber and has good wear resistance and anti-skid effect; the cooperation of elastic bump 18 and semicircle draw-in groove 17 has increased the frictional force between inserted block 141 and the slot 146 cell wall, has improved and has stably fixed inserted block 141 in slot 146, has further strengthened the stability fixed to upper box cover 6 and lower box cover 7.

The working process is as follows: when the switch blade 2 needs to be pulled, the handle 5 is pulled, the silica gel ball 162 is extruded and deformed in the positioning hole 163, the silica gel ball 162 can be taken out of the positioning hole 163, the telescopic rod 4 can be pulled at the moment, the distance between the hand of a person and the switch blade 2 is increased, and the electric shock hazard is avoided.

When needing to be overhauled, the nut 151 is rotated, and due to the matching of the limiting groove 154 to the limiting block 153, the moving of the screw 152 is limited and guided, the screw 152 is driven to slide, and the inserting block 141 is driven to be taken out from the slot 146 and the through hole 145 in sequence. Then the lower box cover 7 can be slid to the lower part of the upper box cover 6 and the support plate 27, or the upper box cover 6 can be slid to the upper part of the lower box cover 7, so that parts at different positions on the base 1 can be overhauled, and the overhauling efficiency is improved.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a safe switch blade, includes base (1), articulated switch blade (2) of setting on base (1) and insulating block (3) continuous with switch blade (2), its characterized in that: the gate knife is characterized by further comprising an expansion rod (4) connected with the insulation block (3), a handle (5) connected with the expansion rod (4), an upper box cover (6) and a lower box cover (7) which are arranged on the base (1) in a sliding mode, baffle plates (26) arranged on two sides of the top wall of the base (1) and a support plate (27) connected with one baffle plate (26), a protection space (8) is formed by enclosing the support plate (27), the upper box cover (6), the lower box cover (7) and opposite side walls of the two baffle plates (26), a movable opening (9) is formed in the top wall of the upper box cover (6), an opening I (10) is formed by enclosing the inner wall of the movable opening (9) and two side walls of the support plate (27), an opening II (11) corresponding to the opening I (10) is arranged in the top wall of the upper box cover (6), and the gate knife (2) moves in the opening I (10) and the opening II (11, the roof of base (1) is equipped with interior spout (12), outer spout (13) that supply lid (6), lower lid (7) to slide respectively along its length direction, the lateral wall of base (1) is equipped with respectively and fixes in outer spout (13) last lid (6), lower lid (7) locking Assembly (14) of fixing in interior spout (12), be equipped with setting element (16) that are used for fixed handle (5) on insulating block (3).

2. A safety blade according to claim 1, wherein: locking component (14) including inserted block (141), slide and set up a plurality of first slider (142) in outer spout (13), slide and set up a plurality of second slider (143) in inner spout (12), a plurality of first slider (142) and second slider (143) equidistant range respectively at the lower tip lateral wall of last lid (6) and lower lid (7), the lateral wall of going up lid (6), lower lid (7) all is equipped with through-hole (145), through-hole (145) are linked together with inner spout (12), outer spout (13) respectively, inserted block (141) slide in through-hole (145), the cell wall of inner spout (12) is equipped with slot (146) corresponding with through-hole (145), the lateral wall of base (1) is equipped with drive inserted block (141) and inserts regulating part (15) in through-hole (145), slot (146) in proper order.

3. A safety blade according to claim 2, wherein: adjusting part (15) including rotate set up nut (151) at base (1) outer wall, screw rod (152) and stopper (153) of setting on through-hole (145) pore wall that link to each other with inserted block (141), the lateral wall of screw rod (152) is equipped with along its length direction and supplies stopper (153) spacing groove (154) that slide, the one end that inserted block (141) was kept away from in screw rod (152) is stretched out outside through-hole (145) and with nut (151) threaded connection.

4. A safety blade according to claim 2, wherein: the wall of the slot (146) is provided with a plurality of semicircular slots (17), and the side wall of the insert block (141) is uniformly provided with a plurality of elastic lugs (18) matched with the semicircular slots (17).

5. A safety blade according to claim 1, wherein: the positioning piece (16) comprises two positioning rods (161) oppositely arranged on the insulating block (3) and a silica gel ball (162) arranged in a hemispherical mode, the silica gel ball (162) is connected with the positioning rods (161), a positioning hole (163) for the silica gel ball (162) to penetrate through is formed in the handle (5), and the diameter size of the silica gel ball (162) is larger than the aperture size of the positioning hole (163).

6. A safety blade according to claim 5, wherein: the handle (5) is provided with a rubber non-slip mat (19).

7. A safety blade according to claim 1, wherein: the top wall of the lower box cover (7) is provided with a guide block (20), and the bottom wall of the support plate (27) is provided with a guide groove (21) for the guide block (20) to slide along the length direction.

8. A safety blade according to claim 1, wherein: the back-to-back side walls of the upper box cover (6) and the lower box cover (7) are respectively provided with a first magnetic rubber paste (22), the opposite side walls of the two baffles (26) are respectively provided with a second magnetic rubber paste (23), and the first magnetic rubber paste (22) and the second magnetic rubber paste (23) are attached to each other.