CN217072201U

CN217072201U - Ratchet wrench with safety lock

Info

Publication number: CN217072201U
Application number: CN202123455482.4U
Authority: CN
Inventors: 邓庆余; 段柏松
Original assignee: Zhuhai Sharp-Group Enterprise Co ltd
Current assignee: Zhuhai Sharp-Group Enterprise Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-07-29
Anticipated expiration: 2031-12-31

Abstract

The utility model discloses a ratchet spanner with safety lock, including casing, speed reduction ratchet head, driving motor, speed governing switch and battery package, casing upper end opening fixed mounting has speed reduction ratchet head, and the battery package is installed to casing lower extreme opening, and the inside fixed mounting of casing has driving motor and speed governing switch, and the battery package passes through speed governing switch and is connected with the driving motor electricity, and driving motor's output and the input drive of speed reduction ratchet head are connected, the utility model discloses still include trigger housing and safety lock, be provided with the trigger opening on the casing lateral wall, trigger open-ended lower extreme is provided with round pin axle inlay groove, and trigger open-ended upper end is provided with the trigger spacing groove, the lower extreme of trigger housing extend and be provided with and be used for rotating the rotatory round pin axle of installing in round pin axle inlay groove. The utility model has the advantages of reasonable design, whole simple compactness, the equipment cost of manufacture is lower relatively, is favorable to improving assembly efficiency, possesses good safety protection effect simultaneously.

Description

Ratchet wrench with safety lock

Technical Field

The utility model relates to a ratchet spanner technical field specifically is a ratchet spanner with safety lock.

Background

With the maturity and stability of the lithium battery technology, the cordless lithium battery tool quickly enters common families, and manufacturers perform a large amount of research and development investment to meet market demands, so that the demands of high quality and low price in the market are met as much as possible.

Because the traditional manual ratchet wrench is inconvenient to operate and use and low in working efficiency, the traditional manual ratchet wrench is gradually replaced by an electric ratchet wrench. However, most of the existing electric ratchet wrenches do not have a good safety protection structure, and workers are easy to operate by mistake before using the electric ratchet wrenches to press a switch, so that certain potential safety hazards exist; in addition, the overall structure of the conventional electric ratchet wrench is relatively complex in design, relatively high in assembly and manufacturing cost and relatively low in assembly efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a ratchet spanner with safety lock to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a ratchet wrench with a safety lock comprises a casing, a speed reduction ratchet head, a driving motor, a speed regulation switch and a battery pack, wherein the speed reduction ratchet head is fixedly installed at an opening at the upper end of the casing, the battery pack is installed at an opening at the lower end of the casing, the driving motor and the speed regulation switch are fixedly installed in the casing, the battery pack is electrically connected with the driving motor through the speed regulation switch, the output end of the driving motor is in driving connection with the input end of the speed reduction ratchet head, the ratchet wrench further comprises a trigger housing and a safety lock, a trigger opening is arranged on the side wall of the casing, a pin shaft embedding groove is arranged at the lower end of the trigger opening, a trigger limiting groove is arranged at the upper end of the trigger opening, a rotating pin shaft which is rotatably installed in the pin shaft embedding groove is arranged at the lower end of the trigger housing in an extending manner, a housing limiting plate which is matched with the trigger limiting groove is arranged at the upper end of the trigger housing in an extending manner, the inner wall of the trigger housing is provided with a collision part in an extending way close to the housing limiting plate, and the end part of a switch telescopic rod of the speed regulating switch is in collision connection with the collision part;

the safety lock comprises an external push piece, a sliding block and an internal slip piece, the external push piece is integrally connected with the internal slip piece through the sliding block, a safety lock sliding groove is formed in the side wall of the shell and located above the opening of the trigger, the sliding block is in sliding fit in the safety lock sliding groove, a shell limiting plate is further integrally connected to the inner wall of the shell, a shell limiting strip is arranged on the side wall, close to the internal slip piece, of the shell limiting plate, a shell limiting strip is arranged, and a slip piece protruding portion used for being matched with the shell limiting strip is arranged on the side wall of the internal slip piece;

when the convex part of the slip sheet is positioned above the shell limiting strip, the lower end of the inner slip sheet is separated from the shell limiting plate;

when the convex part of the slip sheet is positioned below the shell limiting strip, the lower end of the inner slip sheet clamps the inner side of the shell limiting plate.

Preferably, the battery pack comprises a battery end cover and a battery compartment shell for installing the battery, the lower end face of the battery compartment shell is fixedly connected with the battery end cover through screws, a pair of pressing sheets extend from the battery end cover, a clamping hook portion extends from the inner wall of each pressing sheet, and a clamping hook groove matched with the clamping hook portion is formed in the inner wall of an opening in the lower end of the casing.

Preferably, the upper end of the battery compartment shell is further embedded with a pair of output conductive contact pieces used for being electrically connected with the battery, the inside of the casing is further embedded with an internal seat plate, the internal seat plate is provided with a pair of internal conductive elastic pieces used for being in matched contact with the output conductive contact pieces, the internal conductive elastic pieces are electrically connected with the input end of the speed regulation switch through a wire, and the output end of the speed regulation switch is electrically connected with the input end of the driving motor through a wire.

Preferably, the output end of the speed regulation switch is also electrically connected with a status indicator lamp, a transparent window is arranged on the casing, and the status indicator lamp is embedded inside the transparent window.

Preferably, the casing includes two half casings that set up about, assembles fixed connection through the casing screw between two half casings.

Preferably, the half shell is made of PA6-GF30 engineering plastics.

Compared with the prior art, the beneficial effects of the utility model are that: before the trigger is used, the convex part of the sliding piece is positioned below the shell limiting bar, the lower end of the inner sliding piece clamps the inner side of the shell limiting plate, and the trigger shell cannot act even if a worker presses the trigger shell by misoperation, so that the effect of safety protection is achieved; during assembly, the battery pack is pushed to enable the clamping hook portions to be clamped into the corresponding clamping hook grooves, so that the shell and the battery pack can be spliced and assembled;

the utility model has the advantages of reasonable design, whole simple compactness, the equipment cost of manufacture is lower relatively, is favorable to improving assembly efficiency, possesses good safety protection effect simultaneously.

Drawings

FIG. 1 is a right side view in half section of a ratchet wrench with a safety lock;

FIG. 2 is an exploded perspective view of a ratchet wrench with a safety lock;

FIG. 3 is a left side view in half section of a ratchet wrench with a safety lock;

FIG. 4 is an enlarged view of a ratchet wrench with a safety lock at A;

FIG. 5 is a schematic view of a safety lock of a ratchet wrench with the safety lock;

FIG. 6 is a schematic diagram of a top perspective view of a battery pack in a ratchet wrench with a safety lock;

fig. 7 is a schematic bottom perspective view of a battery pack in a ratchet wrench with a safety lock.

In the figure: 1-speed reduction ratchet head, 11-output end, 2-driving motor, 3-speed regulation switch, 31-switch telescopic rod, 32-internal seat plate, 33-internal conductive elastic sheet, 34-state indicator light, 4-battery pack, 41-battery end cover, 42-pressing sheet, 43-clamping hook part, 44-battery compartment shell, 45-output conductive contact sheet, 5-machine shell screw, 6-trigger shell, 61-rotating pin shaft, 62-collision part, 63-shell limiting plate, 7-safety lock, 71-sliding sheet convex part, 72-internal sliding sheet, 73-sliding block, 74-external pushing sheet, 8-wheel head screw, 9-machine shell, 91-trigger limiting groove, 92-safety lock sliding groove, 93-case limit plate, 94-case limit strip.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): referring to fig. 1 to 7, a ratchet wrench with a safety lock comprises a casing 9, a deceleration ratchet head 1, a driving motor 2, a speed regulation switch 3 and a battery pack 4, wherein the deceleration ratchet head 1 is fixedly installed at an upper end opening of the casing 9 through a wheel head screw 8, the battery pack 4 is installed at a lower end opening of the casing 9, the driving motor 2 and the speed regulation switch 3 are fixedly installed inside the casing 9, the battery pack 4 is electrically connected with the driving motor 2 through the speed regulation switch 3, an output end of the driving motor 2 is in driving connection with an input end of the deceleration ratchet head 1, the embodiment further comprises a trigger cover 6 and a safety lock 7, a trigger opening is arranged on a side wall of the casing 9, a pin shaft embedding groove is arranged at a lower end of the trigger opening, a trigger limiting groove 91 is arranged at an upper end of the trigger opening, a rotating pin shaft 61 for rotatably installing in the pin shaft embedding groove is arranged at a lower end of the trigger cover 6 in an extending manner, a housing limiting plate 63 matched with the trigger limiting groove 91 is arranged at the upper end of the trigger housing 6 in an extending mode, a collision part 62 is arranged on the inner wall of the trigger housing 6 close to the housing limiting plate 63 in an extending mode, and the end part of a switch telescopic rod 31 of the speed regulating switch 3 is connected with the collision part 62 in a collision mode;

the reduction ratchet head 1 in this embodiment can adopt a mature structure in the prior art, and obviously, a speed reducer is arranged inside the reduction ratchet head 1, an input end of the speed reducer is in driving connection with the driving motor 2, an output end of the speed reducer is in driving connection with the output end head 11, the output end head 11 is matched with a corresponding bolt end cap, and after the driving motor 2 works, the output end head 11 can screw a corresponding bolt.

The safety lock 7 comprises an external push sheet 74, a sliding block 73 and an internal sliding sheet 72, the external push sheet 74 is integrally connected with the internal sliding sheet 72 through the sliding block 73, the side wall of the machine shell 9 is provided with a safety lock sliding groove 92, the safety lock sliding groove 92 is positioned above the opening of the trigger, the sliding block 73 is slidably matched in the safety lock sliding groove 92, the inner wall of the machine shell 9 is also integrally connected with a machine shell limiting plate 93, the side wall of the machine shell limiting plate 93, which is close to the internal sliding sheet 72, is provided with a machine shell limiting strip 94, and the side wall of the internal sliding sheet 72 is provided with a sliding sheet convex part 71 used for being matched with the machine shell limiting strip 94;

when the slide tab projection 71 is positioned above the case limit bar 94, the lower end of the inner slide tab 72 disengages from the case limit plate 63;

when the slide tab 71 is located under the case stopper 94, the lower end of the inner slide 72 catches the inner side of the case stopper 63.

The utility model discloses a theory of operation: before use, the slide sheet convex part 71 is positioned below the machine shell limiting strip 94, the lower end of the inner slide sheet 72 clamps the inner side of the housing limiting plate 63, and even if a worker presses the trigger housing 6 by misoperation, the trigger housing 6 cannot act, so that the safety protection effect is achieved; the worker pushes the external push sheet 74 upwards by hand, so that after the slide sheet convex part 71 is positioned above the shell limiting strip 94, the lower end of the internal slide sheet 72 can be separated from the shell limiting plate 63, at the moment, the trigger shell 6 is pressed, the trigger shell 6 can rotate around the rotating pin shaft 61, meanwhile, the touch part 62 of the trigger shell 6 pushes the switch telescopic rod 31 of the speed regulating switch 3, the speed regulating switch 3 can transmit electric energy to the driving motor 2, the driving motor 2 can drive the speed reducing ratchet head 1 to work, the spanner function is realized, and the operation and the use are convenient;

after the trigger housing 6 is loosened by hand, the switch telescopic rod 31 of the speed regulation switch 3 resets under the action of the internal spring, and meanwhile, the trigger housing 6 is pushed to return to the initial position, so that the speed regulation switch 3 can be turned off, and the power supply of the driving motor 2 is cut off. The speed control switch 3 in this embodiment may be a mature product in the prior art, and the detailed description of the internal structure is omitted here.

The battery pack 4 comprises a battery, a battery end cover 41 and a battery compartment shell 44 for installing the battery, the lower end face of the battery compartment shell 44 is fixedly connected with the battery end cover 41 through screws, a pair of pressing sheets 42 extend from the battery end cover 41, a hook portion 43 extends from the inner wall of each pressing sheet 42, and a hook groove for matching with the hook portion 43 is formed in the inner wall of an opening at the lower end of the casing 9.

In the process of equipment, promote battery package 4 for the pothook portion 43 card is gone into in the pothook groove that corresponds, can realize the concatenation equipment of casing 9 and battery package 4, during the dismantlement, presses down the pressing tab 42 hard, makes pothook portion 43 deviate from in the pothook groove that corresponds, stimulates battery package 4, can extract battery package 4, and the assembly and disassembly is convenient.

The upper end of the battery compartment shell 44 is further embedded with a pair of output conductive contact pieces 45 which are electrically connected with a battery, the inside of the machine shell 9 is further embedded with an inner seat plate 32, the inner seat plate 32 is provided with a pair of inner conductive elastic pieces 33 which are used for being in matched contact with the output conductive contact pieces 45, the inner conductive elastic pieces 33 are electrically connected with the input end of the speed regulating switch 3 through a lead, and the output end of the speed regulating switch 3 is electrically connected with the input end of the driving motor 2 through a lead.

When the battery pack 4 is inserted into the casing 9, the output conductive contact 45 can contact with the internal conductive elastic sheet 33, so that the circuit is conducted, and once the speed regulation switch 3 is triggered, the wrench function can be realized.

The output end of the speed regulating switch 3 is also electrically connected with a status indicator lamp 34, a transparent window is arranged on the machine shell 9, and the status indicator lamp 34 is embedded inside the transparent window. The real-time working state of the wrench can be conveniently checked.

Specifically, in this embodiment, the housing 9 includes two half housings disposed on the left and right sides, and the two half housings are assembled and fixedly connected with each other through housing screws 5. Obviously, each half-casing is provided with a half-trigger opening slot and a half-safety-lock sliding slot, the two half-trigger opening slots are spliced to form a complete trigger opening, and the two half-safety-lock sliding slots are spliced to form a complete safety-lock sliding slot 92.

In the embodiment, the half shell is made of PA6-GF30 engineering plastic. Can be made into a complex shape to satisfy the ergonomics, and particularly, a plurality of rubber sheets can be bonded and fixed on the outer wall of the machine shell 9 to improve the holding comfort level.

As a further scheme, a power charging interface is further fixedly embedded in the end face of the battery end cover 41, and the power charging interface is electrically connected with the battery. The internal battery is charged through the power charging interface, so that the trouble of frequently replacing the battery can be avoided.

In the present invention, the terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, and are only the terms determined for convenience of describing the structural relationship of each component or element of the present invention, and are not specific to any component or element of the present invention, and are not to be construed as limiting the present invention.

Claims

1. The utility model provides a ratchet spanner with safety lock, includes casing (9), speed reduction ratchet head (1), driving motor (2), speed governing switch (3) and battery package (4), casing (9) upper end opening fixed mounting has speed reduction ratchet head (1), and battery package (4) are installed to casing (9) lower extreme opening, and casing (9) inside fixed mounting has driving motor (2) and speed governing switch (3), and battery package (4) are connected with driving motor (2) electricity through speed governing switch (3), and the output of driving motor (2) is connected with the input drive of speed reduction ratchet head (1), its characterized in that: the speed regulating switch is characterized by further comprising a trigger housing (6) and a safety lock (7), a trigger opening is formed in the side wall of the machine shell (9), a pin shaft embedded groove is formed in the lower end of the trigger opening, a trigger limiting groove (91) is formed in the upper end of the trigger opening, a rotating pin shaft (61) which is used for being rotatably installed in the pin shaft embedded groove is arranged at the lower end of the trigger housing (6) in an extending mode, a housing limiting plate (63) which is used for matching with the trigger limiting groove (91) is arranged at the upper end of the trigger housing (6) in an extending mode, a collision part (62) is arranged at the position, close to the housing limiting plate (63), of the inner wall of the trigger housing (6) in an extending mode, and the end part of a switch telescopic rod (31) of the speed regulating switch (3) is connected with the collision part (62) in a collision mode;

the safety lock (7) comprises an external push sheet (74), a sliding block (73) and an internal slip sheet (72), the external push sheet (74) is integrally connected with the internal slip sheet (72) through the sliding block (73), a safety lock sliding groove (92) is formed in the side wall of the machine shell (9), the safety lock sliding groove (92) is located above a trigger opening, the sliding block (73) is in sliding fit in the safety lock sliding groove (92), a machine shell limiting plate (93) is further integrally connected to the inner wall of the machine shell (9), a machine shell limiting strip (94) is arranged on the side wall, close to the internal slip sheet (72), of the machine shell limiting plate (93), and a slip sheet convex part (71) used for being matched with the machine shell limiting strip (94) is arranged on the side wall of the internal slip sheet (72);

when the slide sheet convex part (71) is positioned above the shell limiting strip (94), the lower end of the inner slide sheet (72) is separated from the shell limiting plate (63);

when the sliding sheet convex part (71) is positioned below the shell limiting strip (94), the lower end of the inner sliding sheet (72) clamps the inner side of the shell limiting plate (63).

2. A ratchet wrench with a safety lock according to claim 1, in which: the battery pack (4) comprises a battery end cover (41) and a battery compartment shell (44) used for installing a battery, the lower end face of the battery compartment shell (44) is fixedly connected with the battery end cover (41) through screws, a pair of pressing sheets (42) extend from the battery end cover (41), a clamping hook portion (43) extends from the inner wall of each pressing sheet (42), and a clamping hook groove used for being matched with the clamping hook portion (43) is formed in the inner wall of an opening in the lower end of the casing (9).

3. A ratchet wrench with a safety lock according to claim 2, in which: the upper end of battery storehouse shell (44) still inlays and is equipped with a pair of output conductive contact piece (45) that are used for being connected with the battery electricity, casing (9) inside still inlay and be equipped with inside bedplate (32), install on inside bedplate (32) a pair of be used for with output conductive contact piece (45) cooperation contact inside conductive elastic sheet (33), inside conductive elastic sheet (33) are connected with speed governing switch (3) input electricity through the wire, the output of speed governing switch (3) is connected with driving motor (2) input electricity through the wire.

4. A ratchet wrench with a safety lock according to claim 3, in which: the output end of the speed regulation switch (3) is also electrically connected with a status indicator lamp (34), a transparent window is arranged on the machine shell (9), and the status indicator lamp (34) is embedded inside the transparent window.

5. A ratchet wrench with a safety lock according to claim 1, in which: casing (9) are including controlling the half casing that sets up two, assemble fixed connection through casing screw (5) between two half casings.

6. A ratchet wrench with a safety lock according to claim 5, in which: the half shell is made of PA6-GF30 engineering plastics.

7. A ratchet wrench with a safety lock according to claim 3, in which: the end face of the battery end cover (41) is further embedded and fixed with a power charging interface, and the power charging interface is electrically connected with the battery.