CN212859361U - Novel switch locking device - Google Patents
Novel switch locking device Download PDFInfo
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- CN212859361U CN212859361U CN202021019289.9U CN202021019289U CN212859361U CN 212859361 U CN212859361 U CN 212859361U CN 202021019289 U CN202021019289 U CN 202021019289U CN 212859361 U CN212859361 U CN 212859361U
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Abstract
The utility model discloses a novel switch locking device sets up on electric hammer or the electric hammer drill that has the hammering function, and electric hammer or electric hammer drill have set up in the function switching knob of function switching part and set up in the portable push type switch, and novel switch locking device includes elasticity sticking department and trigger. The elastic locking part is provided with a connecting end used for being connected with the output end of the function switching knob and a clamping section used for clamping the trigger. The trigger is connected to the handle of the electric hammer or the electric hammer drill and is provided with a clamping block used for being clamped with the elastic locking part and a pressing section used for pressing the pressing switch. Hammering preparation state, the function switches the knob and rotates to the hammering function, promotes elasticity sticking department to predetermined joint position. The hammering state presses the trigger under the hammering state preparation state, and the pressing section compresses tightly the push type switch, and the fixture block joint in the joint section, presses the section and keeps pressing the state.
Description
Technical Field
The utility model belongs to the technical field of the part or the annex of light motor-driven impact tool, especially, relate to a novel switch locking device that supplementary is used for electric hammer or electric hammer to bore.
Background
For electric hammers and electric hammer drills, a multifunctional machine is generally known, and generally includes functions of drilling only, hammering plus drilling and the like. For the switch of the electric hammer and the electric hammer drill, a user always expects that the switch can be normally opened to improve the use comfort when only the hammering function is performed, and the switch can not be normally opened to ensure the safety when only the drill or the hammering and drill and other modes are performed.
In the prior art, the function switching system and the switch of the electric hammer and the electric hammer drill are two independent units, and in order to realize the expectation of a user, a mechanical control mechanism and a mechanical and electrical control mechanism are commonly used to connect the function switching system and the switch. The mechanical + electrical control mechanism approach is costly. When the mechanical mechanism is used for control, the mechanical mechanism necessarily penetrates through a connecting part of the machine body and the handle (a switch is usually arranged on the handle). The electric hammer and the electric hammer drill are high-vibration machines, and a vibration reduction spring is usually arranged between a handle and a machine body to reduce the vibration sensation of a hand of a user. At this time, the relative position of the switch and the machine body is changed along with the vibration at any time, and no reliable mechanism in the prior art can meet the aim that the switch can be normally opened under the hammering function under the condition that the switch position is relatively movable.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel switch locking device to solve among the prior art electric hammer or electric hammer drill and do not have reliable mechanism and can guarantee to satisfy the problem of the target that the switch can normally open under the hammering function under the relatively movable condition of on off position.
The technical scheme of the utility model is that:
a novel switch locking device is arranged on an electric hammer or an electric hammer drill with a hammering function, the electric hammer or the electric hammer drill is provided with a function switching knob arranged on a function switching part and a pressing type switch arranged on a handle, and the novel switch locking device comprises an elastic locking part and a trigger;
the elastic locking part is provided with a connecting end used for being connected with the output end of the function switching knob and a clamping section used for clamping the trigger;
the trigger is connected to a handle of the electric hammer or the electric hammer drill and is provided with a clamping block used for being clamped with the elastic locking part and a pressing section used for pressing the pressing type switch;
in a hammering preparation state, the function switching knob rotates to a hammering function, and pushes the elastic locking part to a preset clamping position;
the hammering state under the hammering state preparation state, press the trigger, press the section and compress tightly the push type switch, just the fixture block joint in the joint section, press the section and keep pressing the state.
Preferably, the electric hammer or the electric hammer drill is provided with an interference surface arranged on the trigger control part, and the elastic locking part comprises an elastic locking assembly and a locking block;
the locking block is provided with the clamping section, a contact surface used for being connected with the abutting surface and a connecting section used for being connected with the elastic locking part;
the input end of the elastic locking assembly is connected with the output end of the function switching knob, and the output end of the elastic locking assembly is connected with the connecting section of the locking block and used for pushing and limiting the relative position relation between the locking block and the abutting surface;
in a hammering preparation state, the function switching knob is rotated to a hammering function, and the elastic locking assembly pushes and limits the locking block on the collision surface;
and in the hammering state, the trigger is pressed under the hammering preparation state, the clamping block is clamped with the clamping section on the locking block, and the pressing section presses the pressing switch.
Preferably, the elastic locking assembly comprises a push plate and an elastic preload member;
the elastic preload piece is provided with a first end connected with the push plate and a second end connected with the locking block;
the input end of the push plate is connected with the output end of the function switching knob, and the output end of the push plate is connected with the first end of the elastic pre-tightening piece;
hammering ready state, the function switches that the knob is rotatory to hammering function, the push pedal promotes in proper order elasticity prelude with the locking block, and spacing the locking block in the conflict face, elasticity prelude has first end with the pretightning force of expansion between the second end.
Preferably, the elastic preload member comprises a spring and a spring seat; the spring seat is provided with a first side and a second side, wherein the first side is used for being connected with the output end of the push plate, the second side is opposite to the first side, and the second side of the spring seat is provided with an accommodating groove; the first end of the spring is accommodated in the accommodating groove, and the second end of the spring is connected with the connecting section of the locking block.
Preferably, an elastic restoring mechanism is arranged in the push type switch, and the push type switch has restoring force when being in a pushed state; in the hammering state, the pretightening force is larger than the restoring force;
and in a non-hammering state, the function switching knob rotates to a non-hammering function, and the pretightening force is smaller than the restoring force or is zero.
Preferably, the trigger is sequentially provided with the clamping block, the pressing section, a fulcrum in rotary connection with the handle and an unlocking section along the length direction, and the trigger rotates on the handle around the fulcrum;
under the hammering state, press the unblock section, the fixture block drops from the joint section, press the section and remove the state of pressing.
Preferably, the multifunctional switch device further comprises an eccentric wheel, the eccentric wheel is connected with the function switch knob, and the rotation center of the eccentric wheel is coaxial with the rotation center of the function switch knob; the elastic locking part is provided with a through hole matched with the eccentric wheel, and the eccentric wheel is sleeved with the through hole; the function switching knob rotates to drive the eccentric wheel to rotate.
The utility model discloses owing to adopt above technical scheme, make it compare with prior art and have following advantage and positive effect:
(1) the utility model provides a novel switch locking device, electric hammer or electric hammer drill's switch are the push type switch, when needs use the hammering function, and it is rotatory to the hammering function to switch the knob with the function, and the function switches the knob and can promote elasticity sticking department to predetermined joint position, presses the trigger, and the fixture block of trigger will with the joint portion joint of elasticity sticking department, and the section of pressing of trigger will compress tightly the push type switch for electric hammer or electric hammer drill keep normally opening. Because the elastic locking part has elasticity, even if the relative position between the switch and the function switching knob changes, the pressing part of the trigger can still press the pressing type switch all the time, and the problem that the electric hammer or the electric hammer drill in the prior art has no reliable mechanism and can ensure that the switch can be normally opened under the hammering function under the condition that the switch position is relatively movable is solved.
(2) The utility model provides a novel switch locking device when needs use the hammering function, switches the function knob rotatory to the hammering function, thereby the eccentric wheel in the function switches the knob can promote the push pedal and drive elasticity pretension piece and sticking department and remove to the handle direction together, and elasticity pretension piece both ends pressurized has the pretightning force this moment, and the contact surface on the locking piece is compressed tightly on the face of contradicting by the pretightning force. At the moment, the electric hammer or the electric hammer drill can be selected to be normally opened, if the electric hammer or the electric hammer drill is normally opened, the trigger is pressed, the clamping block on the trigger is clamped with the clamping section on the locking block, the pressing section can compress the pressing switch, the unlocking section of the trigger is not contacted with the handle, the pretightening force of the elastic pretensioning piece is greater than the restoring force of the pressing switch, and the electric hammer or the electric hammer drill is kept normally opened; if the locking piece does not need to be normally opened, the lower unlocking section only needs to be pressed, the fulcrum on the trigger rotates, the clamping block falls off from the clamping section on the locking block, the pressing section does not contact with the pressing switch, and the pressing switch is closed. When not using the hammering function, it is rotatory to non-hammering function to switch the knob with the function, and the eccentric wheel in the function switches the knob drives the push pedal and removes to keeping away from the handle direction, and the pretightning force of elasticity pretensioning piece is less than the restoring force of push type button or pretightning force even equals zero, and consequently the switch that can't make electric hammer or electric hammer bore is in normally open state, and only when the trigger was pressed to the manual work, the push type switch just can be opened. Therefore the utility model provides a novel switch locking device has realized that the switch can normally open under only the hammering function, only bores or hammering + bores the target that can not normally open under other modes such as waiting.
Drawings
The following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings, in which:
fig. 1 is an exploded view of a novel switch locking device of the present invention;
fig. 2 is a schematic structural view of a novel switch locking device of the present invention in a non-hammering state;
fig. 3 is a schematic structural view of a novel switch locking device of the present invention in a hammering state;
fig. 4 is a partially enlarged schematic view of a novel switch locking device of the present invention in a hammering state;
fig. 5 is a partial schematic view of the novel switch locking device of the present invention in a non-hammering state.
Description of reference numerals:
1: a function switching knob; 2: pushing the plate; 3: a spring seat; 4: a spring; 5: a locking block; 6: a trigger; 601: an arc-shaped bulge; 602: a pressing section; 603: a fulcrum; 604: an unlocking section; 7: a push switch; 8: an eccentric wheel; 9: a contact surface; 10: structure a.
Detailed Description
The novel switch locking device provided by the invention is further described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It is to be noted that the drawings are in a very simplified form and are not to be construed as precise ratios as are merely intended to facilitate and distinctly illustrate the embodiments of the present invention.
Meanwhile, the expressions "first", "second", etc. are used only for the purpose of distinguishing a plurality of configurations, and do not limit the order between the configurations or other features.
Also, the expression "comprising" an element is an expression of "open" which merely means that there is a corresponding component, and should not be interpreted as excluding additional components.
Referring to fig. 1 to 5, the present embodiment provides a novel switch locking device, which is disposed on an electric hammer or an electric hammer drill having a hammering function, the electric hammer or the electric hammer drill has a function switching knob 1 disposed on a function switching portion and a push switch 7 disposed on a handle, and the novel switch locking device includes an elastic locking portion and a trigger 6. The elastic locking part is provided with a connecting end for connecting with the output end of the function switching knob 1 and a clamping section for clamping the trigger 6. The trigger 6 is connected to a handle of the electric hammer or the electric hammer drill, and is provided with a latch for engaging with the elastic locking portion and a pressing section 602 for pressing the press switch 7.
Hammering is prepared the state, and function switching knob 1 rotates to the hammering function, promotes elasticity sticking department to predetermined joint position.
In the hammering state, in the ready state of the hammering state, the trigger 6 is pressed, the pressing section 602 presses the pressing switch 7, the fixture block is clamped in the clamping section, and the pressing section 602 keeps the pressing state.
According to the novel switch locking device provided by the embodiment, under a hammering state, the pressing section 602 of the trigger 6 can press the pressing switch 7, so that the electric hammer or the electric hammer drill is kept normally open. Because the elastic locking part has elasticity, even if the relative position between the switch and the function switching knob 1 changes, the pressing part of the trigger 6 can still press the pressing type switch 7 all the time, and the problem that the electric hammer or the electric hammer drill in the prior art has no reliable mechanism which can ensure that the aim of normally opening the switch under the hammering function can be met under the condition that the switch position is relatively movable is solved.
The structure of the present embodiment will now be explained.
An electric hammer or an electric hammer drill is a multifunctional machine, and generally has a plurality of functions such as drilling only, hammering + drilling, and the like, while a function switching knob 1 is used to switch different functions. The electric hammer or electric hammer drill has an abutment surface 9 arranged in the trigger control. In this embodiment, the elastic locking portion is pushed to move toward the handle by providing an eccentric 8 at the connection between the function switching knob 1 and the elastic preload member, which can be implemented in other ways in other embodiments and is not limited herein. Specifically, in the present embodiment, the eccentric 8 is connected to the function switching knob 1, and the rotation center of the eccentric 8 and the rotation center of the function switching knob 1 are coaxial.
The push switch 7 is internally provided with an elastic restoring mechanism, and the push switch 7 has restoring force when being in a pressed state. In particular, the elastic return mechanism may be the compression spring 4, although other options are possible and not limited herein.
The elastic locking part comprises a push plate 2, an elastic preload piece and a locking block 5. The input end of the push plate 2 is connected with the output end of the function switching knob 1, and the output end of the push plate 2 is connected with the first end of the elastic pre-tightening piece. The first end of the push plate 2 is the connecting end of the elastic locking part. Specifically, the input end of the push plate 2 is provided with a through hole, the through hole is sleeved on the eccentric wheel 8, and the function switching knob 1 drives the eccentric wheel 8 to rotate when rotating, so that the push plate 2 is driven to move.
The locking block 5 is provided with a connecting section connected with the second end of the elastic pretensioning piece, a contact surface contacted with the abutting surface 9 and a clamping section clamped with the clamping block of the trigger 6. In the pre-hammering state, the elastic locking part is pushed to a preset clamping position, namely, to a position where the contact surface is contacted with the abutting surface 9. The clamping section of the locking block 5 is the clamping section of the elastic locking part. In particular, the locking block 5 may be a flap comprising a first panel and a second panel. The first plate has a first surface facing the elastic preload member and a second surface opposite to the first surface, the first surface of the first plate being the connecting section of the above-mentioned locking block 5, connected to the second end of the elastic preload member; the second surface of the first plate is the contact surface of the locking block 5 and is in contact with the abutment surface 9 in the hammer-ready state or hammer state. The first end of the second plate is connected with the first plate, and the second end is the clamping section of the locking block 5. In other embodiments, the locking block 5 may be of other patterns, and is not limited herein.
The elastic preload piece is pressed by two ends in a hammering preparation state or a hammering state and has a preload expanding between the first end and the second end. Under the hammering preparation state or the hammering state, the pretightening force of the elastic preload piece is greater than the restoring force of the push type switch 7; in other states, the pretightening force of the elastic preload piece is smaller than the restoring force of the push switch 7, and even the pretightening force of the elastic preload piece is zero. In particular, the elastic preload may comprise a spring 4 and a spring seat 3. The spring seat 3 is provided with a first side used for being connected with the output end of the push plate 2 and a second side opposite to the first side, and the second side of the spring seat 3 is provided with an accommodating groove. The first end of the spring 4 is accommodated in the accommodating groove, and the second end is connected with the connecting section of the locking block 5, namely, the first surface of the first plate. In the present embodiment, the spring 4 is a cylindrical compression spring. In other embodiments, other elastic pretensioning elements may be employed; even if the elastic preload member employs the spring 4, a plate spring, a conical spring, or the like other than the cylindrical compression spring may be employed without limitation.
The trigger 6 is provided with the latch, the pressing section 602, a fulcrum 603 rotatably connected to the handle, and an unlocking section 604 in this order along the longitudinal direction. The whole trigger 6 is of a structure similar to a seesaw, a fulcrum 603 in the middle of the trigger 6 is of the seesaw structure, and two sides of the fulcrum 603 on the trigger 6 are not contacted with the handle simultaneously. In the hammering state, the unlocking section 604 is pressed, the latch falls off from the clamping section, and the pressing section 602 unlocks the pressing state, in this embodiment, the pressing section 602 is not in contact with the push switch 7.
Specifically, the latch may be an arc-shaped protrusion 601. In the hammer-ready state, the second end of the second plate of the locking block 5 is pressed against a structure inside the electric hammer or electric hammer drill, which is named structure a 10; in the hammering state, when the trigger 6 has one side of the pressing section 602, the arc-shaped protrusion 601 on the trigger 6 slides into the space between the second end of the second plate and the structure a10, and the arc-shaped protrusion 601 is pressed between the second end of the second plate and the structure a10, at this time, the pressing section 602 on the same side of the arc-shaped protrusion 601 presses the push switch 7, and the restoring force of the push switch 7 is smaller than the pre-tightening force of the elastic pre-tightening member, so that the push switch 7 is in the normally open state. In the hammering state, the unlocking section 604 of the trigger 6 is pressed, the trigger 6 rotates at the pivot 603, the arc-shaped protrusion 601 slides out from between the second end of the second plate and the structure a10, the pressing section 602 does not contact with the push switch 7, and the push switch 7 is closed.
The specific working process of this embodiment is as follows:
in a hammering preparation state, the function switching knob 1 rotates to a hammering function, the function switching knob 1 drives the eccentric wheel 8 to rotate so as to drive the push plate 2 to move and sequentially push the spring seat 3, the spring 4 and the locking block 5, and the locking block 5 is in contact with the contact surface 9; the spring 4 is pressed by two ends to generate pretightening force, and the pretightening force presses the contact surface and the interference surface 9 on the locking block 5.
In a hammering state, in a hammering preparation state, one side of the pressing section 602 of the trigger 6 is pressed, the arc-shaped protrusion 601 of the trigger 6 slides into the space between the second end of the second plate and the structure a10 (namely, the clamping block of the trigger 6 is clamped with the clamping section of the locking block 5), and the second end of the second plate presses the arc-shaped protrusion 601 and the structure a 10; the pressing section 602 on the trigger 6 presses the push switch 7, the push switch 7 is opened, and the pre-tightening force of the spring 4 is greater than the restoring force of the push switch 7, so that the trigger 6 is always in the state, and the push switch 7 is in the normally open state. In the hammering state, the unlocking section 604 is pressed, the trigger 6 rotates at the pivot 603, the arc-shaped protrusion 601 of the trigger 6 slides out between the second end of the second plate and the structure a10 (namely, the fixture block of the trigger 6 falls off from the clamping section of the locking block 5), the push switch 7 is restored to the non-pressed state under the action of the restoring force, and the push switch 7 is turned off.
Non-hammering state, function switch knob 1 is rotatory to non-hammering function, thereby function switch knob 1 drives eccentric wheel 8 and rotates and drive push pedal 2 and remove, and the pretightning force of spring 4 is less than push type switch 7's restoring force this moment, can be zero even. Under the effect of the restoring force of the push switch 7, the novel switch locking device provided by the embodiment can not make the push switch 7 in the normally open state any more. To open the push switch 7 at this time, only the push section 602 side of the trigger 6 is pushed, but once released, the push switch 7 is closed.
In a non-hammering state, the output end of the push plate 2 can be in contact with the spring seat 3 or not in contact with the spring seat 3, as long as the pretightening force of the spring 4 is smaller than the restoring force of the push switch 7, and the limit is not made here. When the electric hammer or the electric hammer drill is in a hammering state, the relative position of the switch and the machine body (comprising the function switching part and the trigger 6 control part) can be changed, namely, the relative position between the function switching knob 1 and the trigger 6 can be changed, and the influence caused by the change can be eliminated by the elastic pretensioning piece (the spring 4), so long as the minimum pretightening force of the spring 4 under the switch normally open state is always greater than the restoring force of the push type switch 7.
The embodiment is suitable for the electric hammer or the electric hammer drill with the handle having the vibration reduction structure and is also suitable for the electric hammer or the electric hammer drill without the vibration reduction structure.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, the changes are still within the scope of the present invention if they fall within the scope of the claims and their equivalents.
Claims (7)
1. A novel switch locking device is characterized by being arranged on an electric hammer or an electric hammer drill with a hammering function, wherein the electric hammer or the electric hammer drill is provided with a function switching knob arranged on a function switching part and a pressing type switch arranged on a handle;
the elastic locking part is provided with a connecting end used for being connected with the output end of the function switching knob and a clamping section used for clamping the trigger;
the trigger is connected to a handle of the electric hammer or the electric hammer drill and is provided with a clamping block used for being clamped with the elastic locking part and a pressing section used for pressing the pressing type switch;
in a hammering preparation state, the function switching knob rotates to a hammering function, and pushes the elastic locking part to a preset clamping position;
the hammering state under the hammering state preparation state, press the trigger, press the section and compress tightly the push type switch, just the fixture block joint in the joint section, press the section and keep pressing the state.
2. The novel switch lockout device of claim 1 wherein the hammer or drill has an interference surface disposed on a trigger control portion, the resilient lockout portion including a resilient lockout assembly and a lockout block;
the locking block is provided with the clamping section, a contact surface used for being connected with the abutting surface and a connecting section used for being connected with the elastic locking part;
the input end of the elastic locking assembly is connected with the output end of the function switching knob, and the output end of the elastic locking assembly is connected with the connecting section of the locking block and used for pushing and limiting the relative position relation between the locking block and the abutting surface;
in a hammering preparation state, the function switching knob is rotated to a hammering function, and the elastic locking assembly pushes and limits the locking block on the collision surface;
and in the hammering state, the trigger is pressed under the hammering preparation state, the clamping block is clamped with the clamping section on the locking block, and the pressing section presses the pressing switch.
3. The novel switch lockout device of claim 2 wherein the resilient locking assembly comprises a push plate and a resilient preload member;
the elastic preload piece is provided with a first end connected with the push plate and a second end connected with the locking block;
the input end of the push plate is connected with the output end of the function switching knob, and the output end of the push plate is connected with the first end of the elastic pre-tightening piece;
hammering ready state, the function switches that the knob is rotatory to hammering function, the push pedal promotes in proper order elasticity prelude with the locking block, and spacing the locking block in the conflict face, elasticity prelude has first end with the pretightning force of expansion between the second end.
4. The novel switch lockout device of claim 3 wherein the resilient preload member comprises a spring and a spring seat; the spring seat is provided with a first side and a second side, wherein the first side is used for being connected with the output end of the push plate, the second side is opposite to the first side, and the second side of the spring seat is provided with an accommodating groove; the first end of the spring is accommodated in the accommodating groove, and the second end of the spring is connected with the connecting section of the locking block.
5. The novel switch locking device of claim 3, wherein the push switch is provided with an elastic restoring mechanism, and the push switch has a restoring force when being pressed; in the hammering state, the pretightening force is larger than the restoring force;
and in a non-hammering state, the function switching knob rotates to a non-hammering function, and the pretightening force is smaller than the restoring force or is zero.
6. The novel switch locking device according to claim 1, wherein the trigger is provided with the clamping block, the pressing section, a fulcrum rotatably connected with the handle and an unlocking section in sequence along the length direction, and the trigger rotates on the handle around the fulcrum;
under the hammering state, press the unblock section, the fixture block drops from the joint section, press the section and remove the state of pressing.
7. The novel switch locking device according to claim 1, further comprising an eccentric, wherein the eccentric is connected to the function switching knob, and a rotation center of the eccentric is coaxial with a rotation center of the function switching knob; the elastic locking part is provided with a through hole matched with the eccentric wheel, and the eccentric wheel is sleeved with the through hole; the function switching knob rotates to drive the eccentric wheel to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021019289.9U CN212859361U (en) | 2020-06-05 | 2020-06-05 | Novel switch locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021019289.9U CN212859361U (en) | 2020-06-05 | 2020-06-05 | Novel switch locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212859361U true CN212859361U (en) | 2021-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021019289.9U Active CN212859361U (en) | 2020-06-05 | 2020-06-05 | Novel switch locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212859361U (en) |
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2020
- 2020-06-05 CN CN202021019289.9U patent/CN212859361U/en active Active
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