A push button switch

Abstract

The present invention provides a push button switch, which comprises: a movable rod, a first button, a locking member and a driving member, wherein a locking tongue is provided on the movable rod; the first button is connected to the movable rod to drive the movable rod to move and turn on or off the switch; the locking member is movable between a first locking position, a first unlocking position and a first locking position, a groove and a slot suitable for locking the locking tongue are defined on the locking member, and a notch is provided on the groove; in the first locking position, the locking tongue is locked in the groove, and the first button cannot be pressed; in the first unlocking position, the locking tongue is at the notch, and the first button can be pressed; in the second locking position, the locking tongue is locked in the slot, and the first button remains in a pressed state; the driving member is connected to the locking member to drive the locking member to move. Thus, the safety performance of the tool is improved through the anti-locking function; and the self-locking function ensures that after the switch is turned on, the operator does not need to continue to press the button, so that the switch is turned on reliably and manpower is saved.

Description

Technical Field

[0001] The invention relates to the technical field of electrical switches, and in particular to a push button switch. Background Art

[0002] Push button switches are often used to control power tools such as electric drills, electric hammers and electric grinders.

[0003] The button switch in the related art lacks a push-lock structure and a self-locking structure, which may cause certain safety hazards when the power tool is operated incorrectly; after the switch is turned on, the operator needs to keep pressing the button, which causes inconvenience in operation. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the above technology at least to a certain extent. To this end, one object of the present invention is to provide a push button switch.

[0005] To achieve the above object, the present invention provides a push button switch, which includes:

[0006] A movable rod, wherein a locking tongue is provided on the movable rod;

[0007] A first button, the first button is connected to the movable rod to drive the movable rod to move to turn on or off the switch;

[0008] A locking member, wherein the locking member is movable between a first locking position, a first unlocking position, and a second locking position, wherein a groove and a slot suitable for locking the locking tongue are defined on the locking member, and a notch is provided on the groove; when in the first locking position, the locking tongue is locked in the groove, and the first button cannot be pressed; when in the first unlocking position, the locking tongue is located at the notch, and the first button can be pressed; when in the second locking position, the locking tongue is locked in the slot, and the first button remains pressed;

[0009] A driving member is connected to the locking member to drive the locking member to move.

[0010] According to the push button switch of the present invention, the lock tongue cooperates with the groove and the slot on the locking member, so that when the switch is in the initial free state, the lock tongue is locked in the groove, and the first button cannot move downward, thereby realizing the reverse locking function; when the locking member is driven to move from the first locking position to the first unlocking position, the lock tongue is located at the notch, and the first button can be pressed downward to release the reverse locking; after the first button is pressed downward, the lock tongue moves downward and disengages from the groove, and when the locking member is continuously driven to move from the first unlocking position to the second locking position and the first button is released, the lock tongue is locked in the slot, thereby realizing the self-locking function, and the switch can be kept in the on state; when the first button is pressed downward, the lock tongue disengages from the slot, and when the locking member moves from the second locking position to the first locking position under the action of the driving member, the lock tongue returns to the groove, thereby realizing reverse locking; in this way, the reverse locking function ensures that the switch is not turned on due to the misoperation of the first button, thereby improving the safety performance of the tool; and the self-locking function ensures that after the switch is turned on, the operator does not need to continue to press the first button, thereby making the switch turn on reliably, thereby saving manpower.

[0011] In addition, a push button switch according to the above embodiment of the present invention may also have the following additional technical features:

[0012] According to an embodiment of the present invention, the groove includes a counter-locking portion and an unlocking portion, the counter-locking portion has a counter-locking limit surface to stop the lock tongue, the unlocking portion has the notch to unlock the lock tongue, and the slot is a self-locking portion interlocked with the lock tongue; the lock tongue is movable between the counter-locking portion, the unlocking portion and the self-locking portion.

[0013] According to an embodiment of the present invention, one side of the notch is the anti-lock limiting surface, and the other side of the notch is the locking slot.

[0014] According to an embodiment of the present invention, the card slot is in an inverted U-shape.

[0015] According to an embodiment of the present invention, the locking tongue is a convex block, and a buckling portion is provided on the top surface of the convex block, and the buckling portion is suitable for buckling and connecting with the locking slot.

[0016] According to an embodiment of the present invention, it also includes a shell, which defines an installation cavity, and the shell is provided with a first installation hole and a second installation hole, the movable rod is installed in the installation cavity and passes through the first installation hole to be connected to the first button, the locking piece is installed in the installation cavity, and the driving piece is connected to the locking piece through the second installation hole.

[0017] According to an embodiment of the present invention, the driving member is a second button, which includes a sliding pin, an end cover and a first reset element, one end of the sliding pin is connected to the locking member, and the other end is connected to the end cover, the first reset element is sleeved on the sliding pin and one end elastically presses against the end cover, and the other end elastically presses against the shell.

[0018] According to an embodiment of the present invention, a positioning shaft is provided in the housing, and a positioning hole sleeved on the positioning shaft is provided on the locking member.

[0019] According to an embodiment of the present invention, one end of the movable rod located in the installation cavity is connected to a second resetting element.

[0020] According to an embodiment of the present invention, the first restoring element and the second restoring element are compression springs.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is an exploded schematic diagram according to an embodiment of the present invention;

[0023] Figure 2 is a schematic structural diagram of a locking member according to an embodiment of the present invention;

[0024] Figure 3 is a schematic diagram of a locking member according to another perspective of an embodiment of the present invention;

[0025] Figure 4 is a schematic diagram of a locking member according to an embodiment of the present invention from another perspective;

[0026] Figure 5 is a schematic diagram of the cooperation between a locking member and a movable rod according to an embodiment of the present invention;

[0027] Figure 6 is a schematic structural diagram of a movable rod according to an embodiment of the present invention;

[0028] Figure 7 is a schematic diagram of a housing according to an embodiment of the present invention;

[0029] Figure 8 is a schematic diagram of an anti-lock state according to an embodiment of the present invention;

[0030] Fig. 9 is a schematic diagram of an anti-lock release state according to an embodiment of the present invention;

[0031] Fig.10is a schematic diagram of a first button in a downward movement state according to an embodiment of the present invention;

[0032] Fig.11 is a schematic diagram of a self-locking state according to an embodiment of the present invention;

[0033] Description of reference numerals:

[0034] Push button switch 1;

[0035] Active rod 100, locking tongue 101, buckling portion 1011;

[0036] First button 200;

[0037] The locking member 300, the groove 301, the anti-locking portion 3011, the anti-locking limiting surface 3011a, the unlocking portion 3012, the card slot 302, the self-locking limiting surface 302a, the self-locking resisting surface 302b, the self-locking table 302c, the notch 303, and the positioning hole 304;

[0038] A driving member 400, a sliding pin 401, an end cover 402, and a first reset element 403;

[0039] Housing 500, first mounting hole 501, second mounting hole 502, positioning shaft 503;

[0040] The second resetting element 600 . DETAILED DESCRIPTION

[0041] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0042] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0043] The following is combined with Figure 1-Figure 11 The implementation of a button switch provided by the present invention is described in detail. According to a button switch provided by an embodiment of the present invention, the button switch can be a DC speed regulating switch, and the button switch has an anti-locking function and a self-locking function. Therefore, the button switch 1 includes a movable rod 100, a first button 200, a locking member 300 and a driving member 400.

[0044] Combination Figure 1-Figure 4 , a lock tongue 101 is provided on the movable rod 100; the first button 200 is connected to the movable rod 100 to drive the movable rod 100 to move and turn on or off the switch; the locking member 300 is movable between a first locking position, a first unlocking position and a second locking position, and a groove 301 and a card slot 302 suitable for locking the lock tongue 101 are defined on the locking member 300, and a notch 303 is provided on the groove 301; in the first locking position, the lock tongue 101 is locked in the groove 301, and the first button 200 cannot be pressed; in the first unlocking position, the lock tongue 101 is at the notch 303, and the first button 200 can be pressed; in the second locking position, the lock tongue 101 is locked in the card slot 302, and the first button 200 remains pressed; the driving member 400 is connected to the locking member 300 to drive the locking member 300 to move.

[0045] That is, when the first button 200 is pressed and the movable rod 100 is moved downward, the switch can be turned on, and when the movable rod 100 is restricted from moving downward, the switch can be turned off. When the movable rod 100 is moved downward and its position is controlled to remain unchanged, the switch can be kept on. The locking member 300 can move horizontally relative to the movable rod 100, and the movable rod 100 can move vertically relative to the locking member 300. The movable rod 100 can be restricted from moving or released from the restriction due to the cooperation between the locking tongue 101 and the groove 301 and the slot 302 of the locking member 300.

[0046] Therefore, according to the push button switch 1 of the present invention, through the cooperation between the lock tongue 101 and the groove 301 and the slot 302 on the locking member 300, when the switch is in the initial free state, the lock tongue 101 is locked in the groove 301, and the first button 200 cannot move downward, thereby realizing the reverse locking function; when the locking member 300 is driven to move from the first locking position to the first unlocking position, the lock tongue 101 is located at the notch 303, and the first button 200 can be pressed downward to release the reverse locking; after the first button 200 is pressed downward, the lock tongue 101 moves downward and disengages from the groove 301, and continues to drive the locking member 300 to move from the first unlocking position to the second locking position and release the reverse locking function. When the first button 200 is released, the lock tongue 101 is locked in the slot 302, realizing the self-locking function and keeping the switch in the on state; when the first button 200 is pressed down, the lock tongue 101 is disengaged from the slot 302, and under the action of the driving member 400, when the locking member 300 moves from the second locking position to the first locking position, the lock tongue 101 returns to the groove 301 to realize reverse locking; in this way, the reverse locking function ensures that the switch is not turned on due to misoperation of the first button 200, thereby improving the safety performance of the tool; the self-locking function ensures that after the switch is turned on, the operator does not need to continue pressing the first button 200, so that the switch can be turned on reliably, saving manpower.

[0047] Combination Figure 2-Figure 4In some embodiments of the present invention, the groove 301 includes an anti-locking portion 3011 and an unlocking portion 3012, the anti-locking portion 3011 has an anti-locking limit surface 3011a to stop the lock tongue 101, the unlocking portion 3012 has a notch 303 to unlock the lock tongue 101, the card slot 302 is a self-locking portion interlocked with the lock tongue 101, and the lock tongue 101 is movable between the anti-locking portion 3011, the unlocking portion 3012 and the card slot 302 (self-locking portion). In other words, the first locking position is that the lock tongue 101 is located in the anti-locking portion 3011, and the anti-locking portion 3011 stops the lock tongue 101 due to the anti-locking limit surface 3011a, so that when the first button 200 is pressed, the lock tongue 101 cannot move downward. Among them, it can be understood that the anti-locking limit surface 3011a is to limit the lock tongue 101 from moving downward, and it is set in the vertical direction and abuts the bottom surface of the lock tongue. Furthermore, the first unlocking position is when the lock tongue 101 is located at the unlocking portion 3012, and the unlocking portion 3012 is not restricted in the vertical direction due to the notch 303. At this time, pressing the first button 200 can move the movable rod 100 downward to turn on the switch. In addition, the movement of the lock tongue 101 between the anti-locking portion 3011 and the unlocking portion 3012 can be achieved by the driving member 400 driving the locking member 300 to move.

[0048] Optionally, one side of the notch 303 is the anti-locking limit surface 3011a, and the other side of the notch 303 is the locking groove 302. This facilitates the manufacture of the locking member 300 and also makes the movement of the locking tongue 101 smooth and continuous.

[0049] The card slot 302 may be in an inverted U-shape. Specifically, the card slot 302 has a self-locking limit surface 302a, a self-locking resisting surface 302b and a self-locking table surface 302c. The card slot 302 is to keep the movable rod 100 in the state after being moved down and keep the switch on when the operator does not need to continue pressing the first button 200. Therefore, in order to ensure that the card slot 302 can limit the upward movement of the lock tongue 101, the self-locking limit surface 302a is set in the vertical direction and it can abut the top surface of the lock tongue 101. Then, in order to ensure that the lock tongue 101 will not detach from the card slot 302, the self-locking resisting surface 302b abuts the side of the lock tongue 101 to prevent it from moving in the horizontal direction.

[0050] Combination Figure 6In some embodiments of the present invention, the lock tongue 101 is a convex block, and a buckle portion 1011 is provided on the top surface of the convex block, and the buckle portion 1011 is suitable for buckling and connecting with the card slot 302. Specifically, the convex block is convexly provided on the side surface of the movable rod 100, and the top surface of the convex block is concave downward to form the buckle portion 1011. Among them, the buckle portion 1011 is L-shaped. In this way, the top surface of the buckle portion 1011 abuts against the self-locking limit surface 302a of the card slot 302, and the side surface of the buckle portion 1011 abuts against the self-locking resisting surface 302b of the card slot 302, so that the lock tongue 101 can be buckled and connected with the card slot 302 to perform self-locking, thereby keeping the switch on.

[0051] Combination Figure 1 In some embodiments of the present invention, the push button switch 1 further comprises a housing 500, wherein a mounting cavity is defined in the housing 500, and a first mounting hole 501 and a second mounting hole 502 are provided on the housing 500, the movable rod 100 is mounted in the mounting cavity and passes through the first mounting hole 501 to connect with the first button 200, the locking member 300 is mounted in the mounting cavity, and the driving member 400 is connected with the locking member 300 through the second mounting hole 502 to drive the locking member 300 to move.

[0052] Optionally, the driving member 400 is a second button, and the second button includes a sliding pin 401, an end cover 402 and a first reset element 403. One end of the sliding pin 401 is connected to the locking member 300, and the other end is connected to the end cover 402; the first reset element 403 is sleeved on the sliding pin 401 and one end elastically presses against the end cover 402, and the other end elastically presses against the housing 500. Specifically, the second mounting hole 502 has a length in the axial direction, which can be understood as a pipe structure extending outward from the housing 500. The end cover 402 is sleeved outside the pipe structure and can slide on the pipe structure; here, the sliding pin 401 is key-connected with the end cover 402. It can be understood that the first reset element 403 is sleeved on the sliding pin 401 and one end of the first reset element 403 elastically presses against the inner wall of the end cover 402, and the other end elastically presses against the end surface of the pipe structure. In other words, by pressing the end cover 402, the sliding pin 401 can drive the locking member 300 to move in the horizontal direction. The sliding pin 401 can be integrally formed with the locking member. One end of the sliding pin 401 is connected to the locking member 300, and the other end passes through the second mounting hole 502 and is connected to the end cover 402, so that when the end cover 402 is pressed, the sliding pin 401 can move in the horizontal direction relative to the housing 500, thereby driving the locking member 300 to move; and when the end cover 402 is released, the first reset element 403 can make the sliding pin 401 drive the locking member 300 to return to its original position.

[0053] In addition, to ensure that the movable rod 100 can move upward when the first button 200 is released, one end of the movable rod 100 located in the installation cavity is connected to a second reset element 600. The second reset element 600 provides a return driving force to the movable rod 100.

[0054] Optionally, both the first reset element 403 and the second reset element 600 may be compression springs to provide a return driving force when the button is released.

[0055] Optionally, combined Figure 3 and Figure 7 The shell 500 can be formed by splicing two half shells, wherein the half shell on which the movable rod 100 is installed is provided with a positioning shaft 503, and the locking member 300 is provided with a positioning hole 304 sleeved on the positioning shaft 503, and the positioning hole 304 can move on the positioning shaft 503 along the axis of the positioning shaft 503, thereby ensuring the stable movement of the locking member 300 in the horizontal direction.

[0056] The following combination Figure 8-Figure 11 The anti-self-locking action process of the push button switch 1 is described.

[0057] Figure 8 What is shown is that the button switch 1 is in the reverse locking state (initial free state). At this time, the lock tongue 101 of the movable rod 100 is arranged in the reverse locking portion 3011 of the groove 301. When the first button 200 is pressed, the reverse locking support surface of the lock tongue 101 (the bottom surface of the lock tongue 101) is against the reverse locking limit surface 3011a of the reverse locking portion 3011, and the first button 200 cannot move downward, thereby realizing the reverse locking function.

[0058] Fig. 9 The button switch 1 is shown in the unlocked state. The locking member 300 is driven to move by pushing the end cover 402 so that the locking tongue 101 leaves the locking portion 3011 and is located in the unlocking portion 3012. At this time, when the first button 200 is pressed, the movable rod 100 can move downward.

[0059] Fig.10 It is shown that the first button 200 is pressed to move the movable rod 100 downward to the bottom of the housing 500, and the locking tongue 101 of the movable rod 100 also moves downward in the unlocking portion 3012 of the locking member 300. At this time, the end cover 402 is pushed, and the self-locking table 302c of the locking member 300 passes over the top surface of the locking tongue 101, and the locking groove 302 of the locking block 300 is located above the top surface of the locking tongue 101.

[0060] Fig.11The switch is shown in a self-locking state. Press the end cover 402 to keep it still, release the first button 200, move the movable rod 100 upward, the top surface of the lock tongue 101 abuts against the self-locking limit surface 302a of the slot 302, and the side surface of the lock tongue 101 abuts against the self-locking resistance surface 302b of the slot 302, forming an interlocking here, thereby realizing the self-locking function.

[0061] After self-locking, by pressing the first button 200, the top surface of the lock tongue 101 moves to the slot 302, releasing the interlocking, thereby releasing the interlocking function, and the lock member 300 returns to the initial state under the self-resetting action of the second reset element 600. In this process, the lock tongue 101 of the movable rod 100 also returns to the anti-locking part 3011 through the unlocking part 3012, and the switch is anti-locked again.

[0062] Other components of the push button switch according to the embodiment of the present invention may adopt existing structures, which will not be described in detail here.

[0063] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0064] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0065] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0067] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0068] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A push button switch, characterized in that: include: A movable rod, wherein a locking tongue is provided on the movable rod; A first button, the first button is connected to the movable rod to drive the movable rod to move to turn on or off the switch; A locking member, wherein the locking member is movable between a first locking position, a first unlocking position, and a second locking position, wherein a groove and a card slot suitable for locking the lock tongue are defined on the locking member, and a notch is provided on the groove; when in the first locking position, the lock tongue is locked in the groove, and the first button cannot be pressed; when in the first unlocking position, the lock tongue is at the notch, and the first button can be pressed; when in the second locking position, the lock tongue is locked in the card slot, and the first button remains in a pressed state; the groove comprises an anti-locking portion and an unlocking portion, the anti-locking portion has an anti-locking limiting surface to stop the lock tongue, the unlocking portion has the notch to unlock the lock tongue, and the card slot is a self-locking portion interlocked with the lock tongue; the lock tongue is movable between the anti-locking portion, the unlocking portion, and the self-locking portion; a driving member, the driving member being connected to the locking member to drive the locking member to move; A shell defines a mounting cavity therein, the shell is provided with a first mounting hole and a second mounting hole, the movable rod is mounted in the mounting cavity and passes through the first mounting hole to be connected to the first button, the locking member is mounted in the mounting cavity, and the driving member is connected to the locking member through the second mounting hole.

2. The push button switch according to claim 1, characterized in that: One side of the notch is the anti-locking limit surface, and the other side of the notch is the card slot.

3. The push button switch according to claim 2, characterized in that: The card slot is in an inverted U-shape.

4. The push button switch according to claim 1, characterized in that: The locking tongue is a convex block, and a buckling portion is provided on the top surface of the convex block. The buckling portion is suitable for buckling and connecting with the locking slot.

5. The push button switch according to claim 1, characterized in that: The driving member is a second button, which includes a sliding pin, an end cover and a first reset element. One end of the sliding pin is connected to the locking member, and the other end is connected to the end cover. The first reset element is sleeved on the sliding pin and one end elastically presses against the end cover, and the other end elastically presses against the shell.

6. The push button switch according to claim 1, characterized in that: A positioning shaft is arranged in the shell, and a positioning hole which is sleeved on the positioning shaft is arranged on the locking member.

7. The push button switch according to claim 5, characterized in that: One end of the movable rod located in the installation cavity is connected with a second reset element.

8. The push button switch according to claim 7, characterized in that: The first restoring element and the second restoring element are compression springs.

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