CN216030620U

CN216030620U - Switch starting device of handheld electric saw and handheld electric saw

Info

Publication number: CN216030620U
Application number: CN202122613252.XU
Authority: CN
Inventors: 胡勤
Original assignee: Nantong Gold Index Tools Co ltd
Current assignee: Nantong Gold Index Tools Co ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-03-15
Anticipated expiration: 2031-10-28

Abstract

The utility model provides a switch starting device of a handheld electric saw and the handheld electric saw in the technical field of electric tools, comprising a shell and a switch assembly; the shell comprises a holding part, a battery inserting part and a mounting part for mounting a machined part, wherein the mounting part, the holding part and the battery inserting part are sequentially connected; the switch assembly comprises a switch button and a switch controller, the switch controller is installed in the installation part, the switch button is rotatably connected with the holding part, the switch button comprises an upper end part and a pressing part, the upper end part and the pressing part are arranged at two ends of the switch button, the upper end part extends to the installation part, and a pressing surface on the pressing part is positioned outside a shell of the holding part; the pressing surface is pressed towards the holding part shell, and the upper end part rotates towards the opposite direction to press the switch key of the switch controller. The utility model leads the installation part to leave corresponding space for accommodating related components of the driving mechanism, provides a foundation for the improvement of the aspects of the compactness of the integral structure of the electric saw and the like, and perfects the integral structure layout of the switch starting device.

Description

Switch starting device of handheld electric saw and handheld electric saw

Technical Field

The utility model relates to the technical field of electric tools, in particular to a switch starting device of a handheld electric saw and the handheld electric saw.

Background

The electric saw, also known as power saw, uses electricity as power to cut the cutting tool of timber, stone, steel, etc. and has sharp teeth on its edge. The saw blade is generally made of tool steel and has a plurality of types, such as circular, strip-shaped, chain-shaped and the like. With the development of mobile power sources such as lithium batteries, the application range of the handheld electric saw is wider and wider due to the convenience of the handheld electric saw, and the handheld electric saw is favored by consumers.

However, in the prior art, due to the structural characteristics of the components such as the saw blade, the mounting arrangement of the driving mechanism and the saw blade component are both arranged on the upper portion of the housing, an ear muff structure protruding out of the upper housing is often adopted to mount and fix the motor and the transmission portion in the driving mechanism, or the inner diameter of the upper end portion is widened to mount the motor and the like therein, so that the overall weight of the electric tool is in an unbalanced state, the instability during operation is increased, and the use safety is reduced.

And actuating mechanism and cutting assembly all install in the installation department of upper end in the current, and it is only switch and circuit board that it is located casing middle part gripping portion, can not effectively utilize the space of gripping portion, and how effectively utilize the space of gripping portion to reach electric saw overall structure's optimal layout for electric saw's structure is compacter, and the operation is more stable, and the material still less is the technical problem that present technical staff of the field awaited solution urgently.

Found through prior art retrieval, chinese utility model patent publication number is CN212676144U, discloses a stable electric tool starting switch of installation, including the mount pad, the recess has been seted up at the top of mount pad. This stable electric tool starting switch of installation, through pressing the switch body, can make guide bar and the metal head of its below move down, when the mount pad is installed on electric tool, the moving down of metal head just with electric tool from the conductive joint contact of taking, realize circular telegram work, the switch body in-process that moves down, its self leads through the recess, and reciprocate through the guide block of the left and right sides in the guide way and assist the direction, the removal of guide bar also receives the restriction of guiding hole simultaneously. The patented technology suffers from the problems associated with it as described above.

SUMMERY OF THE UTILITY MODEL

In view of the defects in the prior art, the utility model aims to provide a switch starting device of a handheld electric saw and the handheld electric saw.

The utility model provides a switch starting device of a hand-held electric saw, which comprises a shell and a switch assembly;

the shell comprises a holding part, a battery insertion part and a mounting part for mounting a machined part, wherein the mounting part, the holding part and the battery insertion part are sequentially connected;

the switch assembly comprises a switch button and a switch controller, the switch controller is installed in the installation part, the switch button is rotatably connected with the holding part, the switch button comprises an upper end part and a pressing part, the upper end part and the pressing part are respectively arranged at two ends of the switch button, the upper end part extends into the installation part, and a pressing surface on the pressing part is positioned outside a shell of the holding part;

the pressing surface is pressed towards the inside of the holding part shell, and the upper end part rotates towards the opposite direction and presses the switch key of the switch controller.

In some embodiments, the holding portion is provided with a slot, the switch button penetrates through the slot, the switch button is provided with a fixing column, the holding portion is provided with a clamping slot, and the fixing column is rotatably connected with the clamping slot.

In some embodiments, a buckling column is arranged in the holding portion, an elastic member for resetting the switch button after being pressed is sleeved on the buckling column, and the other end of the elastic member is fixedly arranged in an inner cavity of the switch button.

In some embodiments, a plurality of fastening plates are arranged in the mounting portion, a fixing groove is formed by the plurality of fastening plates, and the switch controller is fixedly arranged in the fixing groove.

In some embodiments, the pressing portion is provided in an arc structure, and the cross-sectional width of the pressing portion gradually decreases from bottom to top.

In some embodiments, the switch assembly further comprises a locking button, wherein the locking button comprises a movable block and a stop plate, the stop plate is an L-shaped structural plate, and a vertical plate of the stop plate is connected with the movable block;

the utility model discloses a convenient operation, including the splenium, press the splenium, the medial surface of pressing the splenium is equipped with spacing post, the portion of gripping has seted up logical groove, the both ends sliding connection of movable block in on the both sides wall plate that leads to the groove, the horizontal slip the movable block when prepositioning, the tip of the horizontal plate of backstop board with the tip contact of spacing post is restricted press the splenium to continue to rotate inwards.

In some embodiments, the workpiece processing device further comprises a driving assembly, the driving assembly comprises a driving motor, a transmission shaft and a rotating gear, the driving motor drives the rotating gear to rotate through the transmission shaft, the workpiece is rotatably connected and arranged on the rotating gear, and the driving motor is electrically connected with the switch controller.

In some embodiments, the rotary gear comprises a gear plate and a gear shaft, the gear shaft is a stepped shaft, the gear plate is sleeved and seated on a step of the gear shaft, and the transmission shaft is in mesh transmission with the gear plate.

In some embodiments, the driving motor is mounted at an end of the holding portion near the battery insertion portion, the transmission shaft is longitudinally disposed in the holding portion, and the rotating gear is disposed in the mounting portion.

The utility model also provides a handheld electric saw, and a switch starting device adopting the handheld electric saw.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, through the optimized layout of the switch components in the shell, the switch components which are all positioned at the holding part in the prior art are partially shifted into the mounting part, so that the mounting part is free of corresponding space for accommodating related components of the driving mechanism, thus a foundation is provided for the improvement of the aspects of the compactness of the whole structure of the electric saw and the like, and the whole structure layout of the switch starting device is further perfected;

2. according to the utility model, the locking switch button is arranged, and the switch button can be pressed only by pressing the locking switch button to the position where the switch button can be pressed, so that the driving assembly is started, and the use safety of the whole handheld electric saw is improved;

3. according to the utility model, the driving motor is arranged in the shell of the holding part, the rotating gear is arranged in the shell of the mounting part, the transmission shaft is longitudinally arranged in the holding part, the driving motor is displaced and accommodated in the holding part by increasing the transmission wheel base, the space structure of the holding part is effectively utilized, a cover shell for safely mounting the driving motor is not required to be arranged at the position of the saw blade mounting part, the material of the shell is saved, the cost is reduced, the integral structure of the electric saw is more compact, the appearance is more attractive, and the experience of consumers is greatly improved.

Drawings

Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic front view of a switch activating device of a hand-held electric saw according to the present invention;

FIG. 2 is a schematic structural diagram of a switch actuating device of the hand-held electric saw according to the present invention;

FIG. 3 is a schematic structural view of the switch assembly of the present invention;

FIG. 4 is a schematic structural diagram of a switch button according to the present invention;

FIG. 5 is a schematic structural view of the movable block and the stop plate of the present invention;

FIG. 6 is a schematic view of the construction of the rotary gear of the present invention;

reference numerals:

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the utility model, but are not intended to limit the utility model in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the utility model. All falling within the scope of the present invention.

Fig. 1 is a front view of a switch actuating device of a hand-held electric saw, fig. 2 is a structural view of the switch actuating device of the hand-held electric saw, fig. 3 is a structural view of a switch assembly, fig. 4 is a structural view of a switch button, fig. 5 is a structural view of a movable block and a stop plate, and fig. 6 is a structural view of a rotary gear.

Example 1

The present invention provides a switch actuating apparatus for a hand-held power saw, as shown in fig. 1-6, comprising a housing 1 and a switch assembly 2. The housing 1 includes a holding portion 12, a battery insertion portion 13, and a mounting portion 11 to which a workpiece is mounted, and the mounting portion 11, the holding portion 12, and the battery insertion portion 13 are sequentially connected.

The switch assembly 2 comprises a switch button 22 and a switch controller 21, the switch controller 21 is installed in the installation part 11, the switch button 22 is rotatably connected with the holding part 12, the switch button 22 comprises an upper end 224 and a pressing part 225, the upper end 224 and the pressing part 225 are respectively arranged at two ends of the switch button 22, the upper end 224 extends into the installation part 11, and a pressing surface 226 on the pressing part 225 is located outside a shell of the holding part 12. The pressing part 225 is of an arc structure, and the width of the cross section of the pressing part 225 is gradually reduced from bottom to top.

The pressing surface 226 is pressed toward the inside of the case of the grip portion 12, and the upper end portion 224 rotates in the opposite direction to press the switch button of the switch controller 21. The holding portion 12 is provided with a slot 122, the switch button 22 penetrates through the slot 122, the switch button 22 is provided with a fixing column 221, a clamping groove is formed in the holding portion 12, and the fixing column 221 is rotatably connected with the clamping groove.

A buckling column 126 is arranged in the holding part 12, an elastic piece 23 which enables the switch button 22 to reset after being pressed is sleeved on the buckling column 126, and the other end of the elastic piece 23 is fixedly arranged in the inner cavity of the switch button 22.

The mounting portion 11 is provided with a plurality of fastening plates 127, the fastening plates 127 form fixing grooves, and the switch controller 21 is fixedly disposed in the fixing grooves. The switch controller 21 is provided with two terminals 212, the two terminals 212 are respectively connected with an electric wire, and the terminals 212 are connected with a power supply through the electric wires.

The working principle is as follows: the switch button 22 is rotatably arranged, when the switch button 22 arranged on the outer projection of the holding part 12 is applied with inward pressure, the switch button 22 is rotatably arranged in the groove 122 through the fixed column 221 and is pressed downwards into the holding part 12, the upper end part 224 rotates and presses the control button 211, and the control button 211 is pressed downwards through the upper end part 224 to start the operation arrangement of the switch controller 21; when the power tool needs to be powered off, the pressure applied to the switch button 22 is removed, the switch button 22 is reset under the action of the elastic member 23, the upper end 224 is far away from the control button 211, the circuit is disconnected, and the electric saw stops working.

According to the utility model, through the optimized layout of the switch assembly 2 in the shell 1, the switch assembly 2 which is completely positioned in the holding part 12 in the prior art is partially displaced into the installation part, so that the installation part 11 leaves a corresponding space for accommodating related components of the driving mechanism 3, thereby providing a foundation for the improvement of the aspects of the compactness of the overall structure of the electric saw and the like, and further perfecting the overall structural layout of the switch starting device.

Example 2

The embodiment 2 is formed on the basis of the embodiment 1, and the locking switch button 22 is arranged, and the switch button 22 can be pressed only by pressing the locking switch button 24 and pressing the locking switch button 24 to a position where the switch button 22 can be pressed, so that the driving assembly 3 is started, and the use safety of the whole electric tool is improved, specifically:

the switch assembly 2 further includes a locking button 24, the locking button 24 includes a movable block 241, a blocking block 242 and a stop plate 243, the blocking block 242 is fixedly disposed on the movable block 241, and a slide groove 2421 is disposed on the blocking block 242. The holding part 12 is provided with a through groove in a penetrating manner, the movable block 241 is movably arranged in the through groove, the movable block 241 protrudes out of the holding part 12, two ends of the movable block 241 extend to the outer side of the shell of the holding part 12, or the length of the movable block 241 is larger than that of the through groove, and two ends of the movable block 241 are slidably connected to two side wall plates of the through groove. The support 125 is disposed in the grip portion 12, and the slide groove 2421 is disposed corresponding to the support 125.

The stop plate 243 includes a snap end 2431 and a fixed end 2431, the snap end 2431 and the fixed end 2431 are fixed to each other to form an L-shaped structure, the fixed end 2431 is fixedly disposed on the movable block 241, and the snap end 2431 is provided with an arc surface 24321. The switch button 22 is provided with a position-limiting column 222, the position-limiting column 222 is disposed in the holding portion 12, and an end of the position-limiting column 222 is disposed corresponding to the arc surface 24321.

The working principle is as follows: when the movable block 241 is slid leftwards and rightwards to the preset position, the end of the horizontal plate of the stop plate 243 contacts with the end of the limit column 222 and limits the pressing part 225 to continue rotating inwards. After the locking button 24 is pressed down, the stop plate 243 and the limit column 222 are arranged in a staggered mode, and the switch button 22 can be arranged in a rotating mode; the switch button 22 is reset under the action of the elastic element, the circuit is disconnected, the electric tool stops working, and the locking button 24 is pressed back, so that the stop plate 243 and the limiting column 222 are mutually abutted to be arranged, and the switch button 22 cannot rotate.

Example 3

In the present embodiment 3, the driving motor is accommodated in the grip portion in a displaceable manner by increasing the distance between the transmission shafts, so that the space structure of the grip portion is effectively utilized, and a cover for safely mounting the driving motor 31 is not required to be provided at the position of the mounting portion 11. Specifically, the method comprises the following steps:

the device also comprises a driving component 3, wherein the driving component 3 controls driving setting through a switch controller 21; the driving assembly 3 comprises a driving motor 31, a transmission shaft 32 and a rotary gear 33, the driving motor 31 drives the rotary gear 33 to rotate through the transmission shaft 32, a workpiece is rotatably connected and arranged on the rotary gear 33, the rotary gear 33 comprises a gear disc 331 and a gear shaft 332, the gear shaft 332 is a stepped shaft, the gear disc 331 is sleeved and located on a step of the gear shaft 332, and the transmission shaft 32 is in meshing transmission with the gear disc 331.

The structural layout of the drive assembly 2 in the housing 1 according to the utility model takes the following form: the driving motor 31 is installed in the shell of the holding part 12, the driving motor 31 is close to the transition position where the holding part 12 is connected with the battery insertion part 13, the rotating gear 33 is installed in the shell of the installation part 11, the driving motor 31 is in driving connection with the rotating gear 33 through the transmission shaft 32, and the transmission shaft 32 is longitudinally arranged in the holding part 12.

According to the electric saw, the transmission wheel base is increased, the driving motor is accommodated in the holding part in a shifting mode, the space structure of the holding part is effectively utilized, a housing for safely mounting the driving motor is not required to be arranged at the position of the saw blade mounting part, the material consumption of the housing is saved, the cost is reduced, the integral structure of the electric saw is more compact, the appearance is more attractive, and the experience of consumers is greatly improved.

Example 4

This embodiment 4 is formed on the basis of any one of embodiments 1 to 3, and adopts the switch starting device of the hand-held electric saw of any one of embodiments 1 to 4, and further includes a battery, which is a lithium battery, inserted into the insertion mounting portion 13 and electrically connected to the circuit board. The machined part includes the saw blade subassembly, and the saw blade subassembly includes saw blade gear, saw blade board and saw blade etc. and its saw blade is chain formula saw blade.

The working principle is as follows: after the locking button 24 is pressed down, the stop plate 243 and the limit column 222 are arranged in a staggered manner, the switch button 22 can be arranged in a rotating manner, when the switch button 22 arranged outside the holding part 12 is applied with inward pressure, the switch button 22 is arranged in the groove 122 in a rotating manner through the fixed column 221 and pressed down towards the holding part 12, the control button 211 is pressed by the upper end part 224 in a rotating manner, and the control button 211 is pressed down through the upper end part 224 to start the switch controller 21 to work; when the power tool needs to be powered off, the pressure applied to the switch button 22 is removed, the switch button 22 is reset under the action of the elastic member 23, the upper end 224 is far away from the control button 211, the circuit is disconnected, and the power saw stops rotating.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the utility model. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. A switch actuating device for a hand-held power saw, comprising a housing (1) and a switch assembly (2);

the shell (1) comprises a holding part (12), a battery insertion part (13) and a mounting part (11) for mounting a workpiece, wherein the mounting part (11), the holding part (12) and the battery insertion part (13) are sequentially connected;

the switch assembly (2) comprises a switch button (22) and a switch controller (21), the switch controller (21) is installed in the installation part (11), the switch button (22) is rotatably connected with the holding part (12), the switch button (22) comprises an upper end part (224) and a pressing part (225), the upper end part (224) and the pressing part (225) are respectively arranged at two ends of the switch button (22), the upper end part (224) extends into the installation part (11), and a pressing surface (226) on the pressing part (225) is positioned outside a shell of the holding part (12);

the pressing surface (226) is pressed toward the inside of the case of the grip portion (12), and the upper end portion (224) rotates in the opposite direction to press the switch key of the switch controller (21).

2. The switch starting device of the handheld electric saw as claimed in claim 1, wherein a slot (122) is formed in the holding portion (12), the switch button (22) is disposed through the slot (122), a fixing post (221) is disposed on the switch button (22), a slot is formed in the holding portion (12), and the fixing post (221) is rotatably connected with the slot.

3. The switch starting device of the handheld electric saw as claimed in claim 1, wherein a buckling column (126) is arranged in the holding portion (12), an elastic member (23) which enables the switch button (22) to reset after being pressed is sleeved on the buckling column (126), and the other end of the elastic member (23) is fixedly arranged in an inner cavity of the switch button (22).

4. The switch activating device of the hand-held electric saw as claimed in claim 1, wherein a locking plate (127) is provided in the mounting portion (11), the locking plate (127) is provided with a plurality of pieces, the locking plate (127) forms a fixing groove, and the switch controller (21) is fixedly provided in the fixing groove.

5. The switch starting device of the hand-held electric saw as claimed in claim 3, wherein the pressing portion (225) is configured in an arc structure, and the cross-sectional width of the pressing portion (225) is gradually reduced from bottom to top.

6. The switch activating device of the hand-held electric saw as claimed in claim 1, wherein the switch assembly (2) further comprises a locking button (24), the locking button (24) comprises a movable block (241) and a stop plate (243), the stop plate (243) is an L-shaped structural plate, and a vertical plate of the stop plate (243) is connected with the movable block (241);

the medial surface of pressing portion (225) is equipped with spacing post (222), logical groove has been seted up in portion of gripping (12), the both ends sliding connection of movable block (241) in on the both sides wall plate of logical groove, the horizontal slip left and right the movable block (241) when to prepositioning, the tip of the horizontal plate of backstop board (243) with the tip contact of spacing post (222) and restriction press portion (225) to continue to rotate inwards.

7. The switch starting device of the hand-held electric saw as claimed in claim 1, further comprising a driving assembly (3), wherein the driving assembly (3) comprises a driving motor (31), a transmission shaft (32) and a rotating gear (33), the driving motor (31) drives the rotating gear (33) to rotate through the transmission shaft (32), the workpiece is rotatably connected to the rotating gear (33), and the driving motor (31) is electrically connected to the switch controller (21).

8. The switch actuating apparatus of the hand-held electric saw as claimed in claim 7, wherein the rotary gear (33) comprises a gear plate (331) and a gear shaft (332), the gear shaft (332) is a stepped shaft, the gear plate (331) is sleeved and seated on a step of the gear shaft (332), and the transmission shaft (32) is in mesh transmission with the gear plate (331).

9. The switch activating device of the hand-held electric saw as claimed in claim 7, wherein the driving motor (31) is mounted to an end of the grip portion (12) near the battery insertion portion (13), the transmission shaft (32) is longitudinally disposed in the grip portion (12), and the rotary gear (33) is disposed in the mounting portion (11).

10. A hand-held power saw, characterized in that a switch activating device of the hand-held power saw according to any one of claims 1 to 9 is used.