CN221726978U - Switch handle and hand-held electric tool - Google Patents

Abstract

The utility model relates to the technical field of electric tools, and particularly provides a switch handle and a handheld electric tool. Wherein, the switch handle includes: a handle body having a grip shape matching a hand shape; the trigger assembly comprises a swinging rod arranged on the handle body and a locking piece arranged on the swinging rod, and the trigger assembly is provided with an open state and a closed state, wherein the free end of the swinging rod is far away from the handle body in the open state, and the free end of the swinging rod is close to the handle body in the closed state; the power-on switch is in transmission fit with the swinging rod; the lock has a locked state in which the lock is supported between the swing lever and the handle body to maintain the trigger assembly in an off state. The scheme of the utility model can improve the safety protection performance of the handheld electric tool while having higher operation convenience.

Description

Switch handle and hand-held electric tool

Technical Field

The utility model relates to the technical field of electric tools, in particular to a switch handle and a handheld electric tool.

Background

With the popularization of small-sized motors, electric tools are widely used in various industries and daily life. The tools are convenient to use, can greatly improve the working efficiency, and can also reduce the labor intensity, especially in occasions requiring a great deal of physical effort and repeated work.

However, the electric tool has some safety hazards while providing convenience. One of them is the misoperation of the power tool switch. This is often the case because the operator is careless, does not use the tool properly, or is defective in the design and manufacturing process of the tool. In either case, once the switch of the power tool is mishandled, serious injury accidents, including personal injury and property damage, may result.

Disclosure of utility model

The utility model provides a switch handle and a hand-held electric tool, which are used for solving the defect that potential safety hazards exist due to easy misoperation of the hand-held electric tool in the prior art, and improving the safety protection performance of the hand-held electric tool while having higher operation convenience.

The utility model provides a switch handle, comprising: a handle body having a grip shape matching a hand shape; a trigger assembly including a swing lever mounted to the handle body and a lock mounted to the swing lever, the trigger assembly having an open state in which a free end of the swing lever is distal from the handle body and a closed state in which the free end is proximal to the handle body; the power-on switch is in transmission fit with the swing rod; the lock has a locked state in which the lock is supported between the swing lever and the handle body to maintain the trigger assembly in an off state.

According to the switch handle provided by the utility model, an elastic reset piece is arranged between the swinging rod and the locking piece; the elastic restoring member provides an elastic force to the locking member to maintain the locking state of the locking member.

According to the switch handle provided by the utility model, the elastic reset piece is a torsion spring, and the locking piece is rotatably arranged on the swinging rod within a limited angle range.

According to the switch handle provided by the utility model, the locking piece comprises a supporting end and a poking end; the supporting end and the stirring end are respectively positioned at two sides of the rotation axis of the locking piece; in the locking state, the supporting end is supported on the handle main body, and the poking end protrudes out of the swinging rod.

According to the switch handle provided by the utility model, the swinging rod comprises a pressing contact end which faces the free end oppositely, and a hinge part is arranged between the pressing contact end and the free end; a cavity is formed in the handle main body, the hinge part is hinged in the cavity, and the power-on switch is arranged on one side of the cavity; in the disconnected state, the press contact end is far away from the power-on switch; and in the closed state, the pressing contact end presses the power-on switch.

According to the switch handle provided by the utility model, the bending part is arranged between the free end of the swinging rod and the hinge part; in the closed state, the free end is attached to one side of the switch handle.

According to the switch handle provided by the utility model, the power-on switch comprises the elastic pressing plate, and the elastic pressing plate keeps an elastic raising gesture in a natural state; and in the closed state, the pressing contact end presses down the elastic pressing plate so as to switch on the energizing switch.

According to the switch handle provided by the utility model, the outer surface of the handle main body is provided with the reducing part, and the transitional shape of the reducing part at least comprises an arc-shaped concave surface.

According to the utility model, the switch handle comprises a hand guard frame; the hand guard frame is connected with the handle main body end to end so as to enclose a frame-shaped space between the hand guard frame and the handle main body; the movable range of the swinging rod is in the frame-shaped space.

The utility model also provides a handheld electric tool, which comprises the switch handle in any one of the embodiments.

The switch handle and the hand-held electric tool control the on-off of the power-on switch through the opening state and the closing state of the trigger component. The lock is designed to maintain the trigger assembly in an off state unless the lock is manually released. In the locked state, the locking member is supported between the swing lever and the handle body, preventing movement of the swing lever. The design can prevent the power tool from being started or stopped accidentally due to the fact that an operator touches the switch by mistake, so that the use safety and the reliability are improved.

In general, the switch handle and the hand-held electric tool using the switch handle of the present utility model can control the working state of the electric tool more safely and accurately by controlling the power-on switch of the electric tool and adding an additional locking mechanism, thereby improving the safety and reliability of the electric tool.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a switch handle provided by the present utility model;

FIG. 2 is a schematic diagram of a mechanism in a partially perspective state of a switch handle provided by the utility model;

reference numerals:

A handle body 10; a cavity 11; a variable diameter portion 12; a hand guard frame 13; a frame-shaped space 14; a swing lever 21; a locking member 22; a free end 23; an elastic restoring member 24; a support end 25; a dial end 26; a press-contact end 27; a hinge 28; a bending portion 29; an energizing switch 30; an elastic pressing plate 31.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the embodiments of the utility model, it should be noted that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely for convenience in describing the embodiments of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. It should also be noted that in the description of the utility model, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. The specific meaning of the above terms in the utility model will be understood by those skilled in the art according to the specific circumstances.

Common hand-held electric tools include electric drills, electric hammers, electric shears, grinding machines, impact wrenches, reciprocating saws, electric hand drills, hand grinding wheels, impact electric drills, electric saws, and the like. With the popularization of small motors, electric tools are increasingly widely used, but some potential safety hazards exist at the same time.

The utility model provides a switch handle with a locking mechanism, when a hand-held electric tool provided with the switch handle is used, a trigger assembly can only work after a locking piece 22 is manually unlocked, and a circuit is switched on or off through the transmission of a swinging rod 21 and an energizing switch 30, so that injuries and losses caused by misoperation are prevented.

Embodiments of the switch handle and hand-held power tool of the present utility model are described below in conjunction with fig. 1-2.

The present utility model provides a switch handle, as shown in fig. 1 and 2, comprising: a handle body 10, the handle body 10 having a grip shape matching a hand shape; a trigger assembly comprising a swing lever 21 mounted to the handle body 10 and a lock 22 mounted to the swing lever 21, the trigger assembly having an open state in which the free end 23 of the swing lever 21 is remote from the handle body 10 and a closed state in which the free end 23 is proximate to the handle body 10; and an energizing switch 30 which is in transmission fit with the swinging rod 21. Wherein the locking member 22 has a locked state in which the locking member 22 is supported between the swing lever 21 and the handle body 10 to maintain the trigger assembly in an off state.

The above embodiment controls the on-off of the energizing switch 30 through the open and closed states of the trigger assembly for the start-stop control of the hand-held power tool. Wherein the open and closed states of the trigger assembly may correspond to the on and off of the power-on switch 30, respectively. In the case where the off state corresponds to the on state, the continuous output of the apparatus can be maintained by the lock 22 without the person always applying the force of the operating handle.

According to the present application, in a preferred aspect, the off state of the trigger assembly corresponds to the off state of the power-on switch 30 and the on state of the trigger assembly corresponds to the on state of the power-on switch 30. Specifically, in the off state of the trigger assembly, the free end 23 of the swing lever 21 is away from the handle body 10, at which point the power switch 30 is de-energized and the hand held power tool is disabled. In the closed state of the trigger assembly, the free end 23 of the swing lever 21 is adjacent the handle body 10, at which point the power switch 30 is turned on and the hand held power tool begins to operate. This design reduces unnecessary power starts caused by misoperations, thereby improving safety. The design of the lock 22 is such that the trigger assembly remains in the off state unless the lock of the lock 22 is manually released. In the locked state, the lock member 22 is supported between the swing lever 21 and the handle body 10, preventing the rotation of the swing lever 21, thereby keeping the manual power tool inoperative in the non-use state. The design can prevent the accidental start of the electric tool caused by the fact that an operator touches the switch by mistake, so that the use safety is improved.

It will be appreciated that the off state of the trigger assembly may also correspond to the on state of the power switch 30, and the on state of the trigger assembly corresponds to the off state of the power switch 30. This may be set according to the use requirements of the actual power tool. For example, when the switch handle is used on a clamp-type power tool, the trigger assembly is kept in an off state, so that the clamp-type power tool can be always clamped.

As shown in fig. 1, the handle body 10 of the switch handle has a grip shape, such as a shape of a handle, which matches a hand shape. Preferably, the handle body 10 is elongated and has a certain curvature. In use, the arched side of the arcuately extending handle body 10 corresponds to the palm and jaw of an operator (the dotted circle above fig. 1), the concave side corresponds to the four fingers of an operator (the four dotted circles below fig. 1), and the handle body 10 conforms to ergonomic principles and can avoid hand fatigue caused by long-term operation.

According to the switch handle provided by the utility model, an elastic reset piece 24 is arranged between the swinging rod 21 and the locking piece 22; the elastic restoring member 24 provides an elastic force to the locking member 22 to maintain the locking member 22 in the locked state. Due to the elastic reset piece 24, when the operator releases the swing rod 21, the locking piece 22 can automatically reset under the elastic force of the elastic reset piece 24, so that the trigger assembly automatically returns to the off state to realize the on-off control of the power-on switch 30, thereby improving the convenience and safety of operation. The trigger assembly can complete the switch from the closed state to the open state in a shorter time due to the elastic restoring member 24, thereby improving the response speed of the control process of the energizing switch 30. Depending on the form of the mounting structure between the locking member 22 and the swing lever 21, the elastic restoring member 24 may be a spring, torsion spring, metal spring plate, or the like.

Further, the elastic restoring member 24 can provide a stable elastic force so that the locking member 22 is always maintained in the locked state, and is not accidentally moved or unlocked due to external force (e.g., vibration, impact) or the like. This enhances the stability and reliability of the trigger assembly.

Preferably, according to the switch handle provided by the utility model, the elastic restoring member 24 is a torsion spring, and the locking member 22 is rotatably mounted on the swing rod 21 within a limited angle range. The locking piece 22 can automatically rotate to a locking angle under the elastic force of the torsion spring.

According to the present utility model, a switch handle is provided, the locking member 22 comprising a support end 25 and a toggle end 26; the supporting end 25 and the poking end 26 are respectively positioned at two sides of the rotation axis of the locking piece 22; in the locked state, the support end 25 is supported by the handle body 10 and the toggle end 26 protrudes from the swing lever 21. The pulling end 26 protrudes out of one side of the swing rod 21 in the locked state, so that an operator can conveniently rotate the locking piece 22 to unlock the locking piece by moving the pulling end 26, the operation of the trigger assembly is facilitated, and the operation convenience of the switch handle is improved. As shown particularly in fig. 1, the operator may use a full hand or little finger to slide over the toggle end 26 of the locking member 22 while holding the switch handle to unlock the locking member 22.

Further, at the above locking angle, the supporting end 25 of the locking member 22 is preferably inclined with respect to the surface of the handle body 10, and the angle between the locking angle and the unlocking angle includes an angle where the supporting end 25 is perpendicular to the surface of the handle body 10. Therefore, in this inclined state, even if a force is applied to the swing lever 21, the force affects the lock member 22 to maintain the lock angle thereof without causing the lock member 22 to reverse against the elastic force of the torsion spring.

According to the switch handle provided by the utility model, as shown in fig. 2, the swinging rod 21 comprises a pressing contact end 27 facing opposite to the free end 23, and a hinge part 28 is arranged between the pressing contact end 27 and the free end 23; a cavity 11 is formed in the handle body 10, a hinge part 28 is hinged in the cavity 11, and an energizing switch 30 is arranged on one side of the cavity 11; in the off state, the press contact 27 is away from the energizing switch 30; in the closed state, the press contact 27 presses the energizing switch 30. The swinging rod 21 and the handle body 10 are connected together through the hinge part 28, so that the pressing contact end 27 of the swinging rod 21 can flexibly rotate in the cavity 11, and meanwhile, the pressing contact end 27 is far away from the power-on switch 30 in the off state, so that the risk of accidental operation of the hand-held electric tool caused by the fact that an operator or a user touches the switch by mistake is avoided. The use of the cavity 11 to provide the hinge 28 and the power switch 30 results in a simpler and more compact overall structure.

According to the switch handle provided by the utility model, a bending part 29 is arranged between the free end 23 of the swinging rod 21 and the hinging part 28; in the closed state, the free end 23 is attached to one side of the switch handle. By the bent portion 29, the bent portion 29 and the free end 23 are formed in an L-like structure on the side of the hinge portion 28, and even when the hinge portion 28 is hidden in the handle body 10, the free end 23 can be attached to the switch handle in the closed state, and the feeling of use of the operator can be improved.

According to the switch handle provided by the utility model, as shown in fig. 2, the energizing switch 30 preferably comprises an elastic pressing plate 31, and the elastic pressing plate 31 keeps an elastic tilting posture in a natural state. According to the above embodiment, the elastically tilted posture of the elastic pressing plate 31 may correspond to the on or off state of the energizing switch 30.

When the elastic raising posture of the elastic pressing plate 31 corresponds to the on state of the power switch 30, the trigger assembly is kept in the off state, so that the electric tool can be kept running all the time, and the clamp-type electric tool can be kept in the clamping state stably.

Preferably, in the closed state of the trigger assembly, the pressure contact end 27 depresses the resilient pressure plate 31 to turn on the power switch 30. The elastic pressing plate 31 keeps an elastic raising gesture in a natural state, and under the condition of not receiving pressure, the elastic pressing plate 31 can not trigger the on state of the power switch 30, so that under the condition that the trigger component keeps an off state, the elastic pressing plate 31 always keeps the elastic raising gesture, the reliability of the switch is further improved, and the technical effect of preventing the equipment from being started by mistake can be achieved.

According to the switch handle provided by the utility model, as shown in fig. 1, the outer surface of the handle body 10 is preferably provided with the reducing part 12, and the transitional shape of the reducing part 12 at least comprises an arc-shaped concave surface. By forming the arcuate concave surface in the reducing portion 12, it can be used to match the hand of an operator, improving the comfort of the operator holding the switch handle. The diameter-variable portion 12 shown in fig. 1 can be matched with the jaw position of the operator, so that the hand of the operator can be accurately matched with the proper switch handle holding position.

Further, the diameter-variable portion 12 may be provided in plural numbers, and is adapted to the five fingers of the operator, so that the shape of the handle body 10 is based on the ergonomic principle, and the holding comfort can be improved, and the fatigue of the hand caused by the long-time operation can be avoided.

According to the utility model, a switch handle is provided, comprising a hand guard frame 13; the hand guard frame 13 is connected with the handle main body 10 end to end so as to enclose a frame-shaped space 14 between the hand guard frame 13 and the handle main body 10; the movable range of the swing lever 21 is within the frame-shaped space 14. The hand guard frame 13 is connected with the handle body 10 end to enclose a frame-shaped space 14, and the movable range of the swinging rod 21 is in the frame-shaped space 14, so that additional support and protection can be provided for an operator, and the hands of the operator or the swinging rod 21 are prevented from being knocked during use.

The utility model also provides a hand-held electric tool, which comprises the switch handle of any embodiment. The hand-held electric tool can be an electric drill, an electric hammer, an electric scissors, a grinder, an impact wrench, a reciprocating saw, an electric hand drill, a hand grinding wheel, an impact electric drill, an electric saw and the like.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "modes," "particular modes," or "some modes," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or mode is included in at least one embodiment or mode of the utility model. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or manner. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or ways. Furthermore, various embodiments or modes and features of various embodiments or modes described in this specification can be combined and combined by those skilled in the art without mutual conflict.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. A switch handle, comprising:

a handle body (10), the handle body (10) having a grip shape matching a hand shape;

A trigger assembly comprising a swing lever (21) mounted to the handle body (10) and a lock (22) mounted to the swing lever (21), the trigger assembly having an open state in which a free end (23) of the swing lever (21) is remote from the handle body (10) and a closed state in which the free end (23) is proximate to the handle body (10);

an energizing switch (30) which is in transmission fit with the swinging rod (21);

the lock (22) has a locked state in which the lock (22) is supported between the swing lever (21) and the handle body (10) to maintain the trigger assembly in an off state.

2. Switch handle according to claim 1, characterized in that between the oscillating lever (21) and the locking member (22) an elastic return member (24) is provided;

the elastic restoring member (24) provides an elastic force to the locking member (22) to maintain the locking state of the locking member (22).

3. Switch handle according to claim 2, characterized in that the elastic return element (24) is a torsion spring, the locking element (22) being rotatably mounted to the oscillating lever (21) in a limited angular range.

4. A switch handle according to claim 3, characterized in that the locking member (22) comprises a support end (25) and a toggle end (26);

The supporting end (25) and the stirring end (26) are respectively positioned at two sides of the rotation axis of the locking piece (22);

In the locked state, the support end (25) is supported on the handle body (10), and the poking end (26) protrudes from the swing rod (21).

5. Switch handle according to claim 1, characterized in that the oscillating lever (21) comprises a press contact end (27) facing opposite to the free end (23), the press contact end (27) and the free end (23) being provided with a hinge (28) therebetween;

A cavity (11) is formed in the handle main body (10), the hinge part (28) is hinged in the cavity (11), and the energizing switch (30) is arranged on one side of the cavity (11);

In the disconnected state, the press contact (27) is far away from the energizing switch (30); in the closed state, the pressure contact end (27) presses the energizing switch (30).

6. Switch handle according to claim 5, characterized in that a bend (29) is provided between the free end (23) of the oscillating lever (21) and the hinge (28);

In the closed state, the free end (23) is attached to one side of the switch handle.

7. The switch handle according to claim 5, characterized in that the energizing switch (30) includes an elastic pressing plate (31), the elastic pressing plate (31) maintaining an elastically tilted posture in a natural state;

In the closed state, the press contact end (27) presses down the elastic pressing plate (31) to turn on the energizing switch (30).

8. Switch handle according to any one of claims 1 to 7, characterized in that the handle body (10) has a reducing portion (12) formed on its outer surface, the transition shape of the reducing portion (12) comprising at least an arcuate concave surface.

9. Switch handle according to any one of claims 1 to 7, characterized in that it comprises a hand guard frame (13);

The hand guard frame (13) is connected with the handle main body (10) end to end so as to enclose a frame-shaped space (14) between the hand guard frame (13) and the handle main body (10);

The movable range of the swinging rod (21) is in the frame-shaped space (14).

10. A hand held power tool comprising a switch handle according to any one of claims 1 to 9.