CN102403154B - ON-OFF-ON bridge type switch with locking mechanism - Google Patents

Abstract

The invention discloses an ON-OFF-ON bridge switch with a locking mechanism, which is suitable for electric tools, and includes a switch group and a bracket, the switch group is fixed on the bracket, and the switch group includes a first button and a second button , and the intermediate shaft; the switch also includes a sliding mechanism that can slide in a direction parallel to the intermediate shaft and a locking mechanism for the first button and the second button: when the sliding mechanism slides to the locked state, the locking mechanism for the first button and the second button The locking mechanism occupies the space required for the actuation of the first key and the second key, respectively. By adopting the above technical solution, sliding the sliding mechanism once can lock the first key and the second key at the same time to occupy the space required for the activation of the two keys at the same time, thus greatly increasing the force that the switch can bear when the switch is in the locked state. Switch does not activate.

Description

ON-OFF-ON bridge switch with locking mechanism

technical field

The invention relates to an ON-OFF-ON bridge switch, in particular to an ON-OFF-ON bridge switch with a locking mechanism, which is suitable for electric tools.

Background technique

The switch on the electric tool needs to be equipped with a switch locking mechanism in order to prevent the tool from starting when it is misoperated. The locking mechanism on the ON-OFF-ON bridge switch usually used on power tools has certain defects: in the locked state, if a relatively small force is applied to the switch, the switch can still be activated and is prone to failure; in addition, ON- The OFF-ON switch may have a poor reset problem during use.

Contents of the invention

The technical problem to be solved by the present invention is to provide an ON-OFF-ON bridge switch with a locking mechanism that is easy to lock/unlock and can withstand a relatively large force in the locked state so that it is not easy to start.

In order to achieve the above object, the technical scheme adopted in the present invention is:

An ON-OFF-ON bridge switch with a locking mechanism includes a switch group and a bracket, the switch group is fixed on the bracket, the switch group includes a first button, a second button, an intermediate shaft connecting the two buttons and an electrical function module, It is characterized in that it also contains:

Sliding mechanism: the sliding mechanism includes a slide rail and a locking button, and the sliding rail is arranged on the bracket on the same side as the first button parallel to the middle axis; the locking button is slidably matched with the sliding rail; and

The locking mechanism of the first button and the locking mechanism of the second button: when the sliding mechanism slides to the locked state, the locking mechanism of the first button and the locking mechanism of the second button occupy the space required for the activation of the first button and the second button respectively .

With the above technical scheme, when the sliding mechanism slides to the locked state, the locking mechanism occupies the space required for the two buttons of the switch to be activated, and the switch cannot be activated; when the sliding mechanism slides to the unlocked state, the locking mechanism does not block the switch, and the switch It can be started normally.

As the first preferred form of the technical solution of the present invention: the locking mechanism of the first button includes a lower boss formed under the locking button extending to the bottom of the first button, and at the same time, a The sliding contact surface fitted by the lower boss; the locking mechanism of the second button includes a pin hole arranged on the bracket below the second button and a locking pin movably arranged in the pin hole, and at the same time, the locking button extends at the bottom of the bracket There is a locking plate attached to the bottom of the bracket, and the locking plate extends to the pin hole, wherein the upper end of the locking pin is in contact with the lower surface of the button, and the lower end of the locking pin is in contact with the locking plate.

With the ON-OFF-ON bridge switch with a locking mechanism of this structure, when the locking button slides to the locked state, the boss and the locking pin on the locking button respectively occupy the starting position of the first button and the second button of the switch. When the lock button slides to the unlocked state, the lock pin can move, and there is no boss blocking the first button, so that the switch can be started normally.

As an improvement of the first preferred mode of the present invention: the part above the lower convex platform and the first button is in a concave shape, and the concave shape is symmetrical up and down. The width of the rail in the longitudinal direction is smaller than the width of the depression in the longitudinal direction of the slide rail.

With this improvement, the locking button only needs to slide the concave-shaped raised part of the lower boss to the concave-shaped concave part of the first button above the lower boss to unlock, which is convenient to operate; on the contrary, it is also convenient. Lock operation.

As the second preferred mode of the technical solution of the present invention: the locking mechanism of the first button includes a lower boss formed under the locking button extending to the bottom of the first button, and at the same time, the lower surface of the first button is provided with a The sliding contact surface that the lower boss fits; the locking mechanism of the second button includes an upper boss that extends to the top of the first button of the locking button, and at the same time, the upper surface of the first button is provided with the upper boss Form-fitting sliding contact surface.

With the ON-OFF-ON bridge switch with a locking mechanism of this structure, when the locking button slides to the locked state, the lower boss on the locking button occupies the space required for the first button to start, and the upper boss occupies the space required for the first button to start. The space required for the activation of the second key, the switch cannot be activated; when the locking button slides to the unlocked state, the switch is unlocked and can be activated normally.

As an improvement of the above-mentioned second preferred mode, the upper boss, the lower boss, and the first button between the upper boss and the lower boss are in concave shape, and the concave shape is symmetrical up and down, Simultaneously, the width of the concave-shaped raised portion in the longitudinal direction of the slide rail is smaller than the width of the concave portion in the longitudinal direction of the slide rail.

With this improvement, the locking button only needs to slide the concave-shaped raised parts of the two bosses to the concave-shaped concave part of the first button between the upper boss and the lower boss to unlock, and the operation Convenience; On the contrary, it also facilitates the locking operation.

As the third preferred mode of the technical solution of the present invention: the locking mechanism of the first button includes a first pin hole provided on the bracket below the first button and a first locking pin movably arranged in the first pin hole The locking mechanism of the second button includes a second pin hole provided on the bracket below the second button and a second locking pin movably arranged in the second pin hole; at the same time, the locking button extends at the bottom of the bracket to connect with the bracket A locking plate attached to the bottom, the locking plate extends to the second pin hole, wherein, the upper end of the first locking pin is in contact with the lower surface of the first button, and the upper end of the second locking pin is in contact with the first button The lower surfaces of the two buttons are in contact with each other. In addition, the lower ends of the first locking pin and the second locking pin are in contact with the locking plate.

With the ON-OFF-ON bridge switch with a locking mechanism of this structure, when the locking button slides to the locked state, the locking pins under the first button and the second button respectively occupy the space required for their activation, and the switch is locked. It is fixed and cannot be activated; when the locking knob slides to the unlocked state, the locking plate allows the overhead hole, the locking pin can move in the pin hole, and the switch is in the unlocked state and can be started freely.

In summary, by adopting the above technical solution, the present invention achieves the following beneficial effects compared with the prior art:

Sliding the sliding mechanism once can lock the first key and the second key at the same time, and occupy the space required for the activation of the two keys at the same time, thus greatly increasing the force that the switch can bear when the switch is locked and the switch is not activated.

The further technical problem to be solved by the present invention is to overcome the defect of poor reset of the ON-OFF-ON bridge switch in the prior art.

In order to achieve this purpose, the present invention is based on the above technical solution: return springs are arranged under the first button and the second button. Such a structure can automatically reset the two buttons of the switch.

As a further improvement of the technical solution with a return spring, when the locking mechanism is a pin hole and a locking pin, the return spring is arranged between the locking pin and the pin hole. Such a structure enables the reset spring to reset the locking pin automatically while the button is reset.

Description of drawings

The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing, wherein:

Fig. 1 is the front view of the first embodiment of the ON-OFF-ON bridge switch with locking mechanism of the present invention;

Fig. 2 is a schematic diagram of the three-dimensional structure of the locked state of the embodiment shown in Fig. 1 as viewed from the left;

Fig. 3 is a schematic diagram of the three-dimensional structure of Fig. 2 in an unlocked state;

Fig. 4 is a structural schematic diagram of a deformation structure of the embodiment shown in Fig. 1;

Fig. 5 is a three-dimensional structural schematic view of the deformed structure shown in Fig. 4 in a right-view direction;

Fig. 6 is a three-dimensional structural schematic view of the deformed structure shown in Fig. 4 viewed from the bottom;

Fig. 7 is the front view of the second embodiment of the ON-OFF-ON bridge switch with locking mechanism of the present invention;

Fig. 8 is a schematic perspective view of the locked state of the embodiment shown in Fig. 7 in a left-view direction;

Fig. 9 is a schematic perspective view of the three-dimensional structure of Fig. 8 in an unlocked state;

Fig. 10 is the front view of the third embodiment of the ON-OFF-ON bridge switch with locking mechanism of the present invention;

Fig. 11 is a schematic perspective view of the locked state of the embodiment shown in Fig. 10 as viewed from the right;

Fig. 12 is a schematic diagram of the three-dimensional structure of Fig. 11 in an unlocked state.

Detailed ways

Figures 1-3 show the first embodiment of the ON-OFF-ON bridge switch with locking mechanism of the present invention. As shown in Figure 1, the ON-OFF-ON bridge switch with locking mechanism of this embodiment includes a switch group 4 and a bracket 5, the switch group 4 is fixed on the bracket 5, and the switch group 4 includes a first button 4a , the second button 4b, the intermediate shaft 4c connecting the two buttons 4a, 4b and the electrical function module 4d;

At the same time, this embodiment also includes a sliding mechanism 6, a locking mechanism for the first button, and a locking mechanism for the second button; wherein:

The sliding mechanism 6 can slide in a direction parallel to the middle axis, and specifically includes a slide rail 6b and a locking button 6a, and the slide rail 6b is arranged on the bracket 5 on the same side as the first button 4a parallel to the middle axis 4c , and the locking button 6a is slidably matched with the slide rail 6b;

The locking mechanism of the first button includes: the lower boss 11 formed under the locking button 6a extending to the bottom of the first button 4a. contact surface 12;

The locking mechanism of the second button includes: a pin hole 16 (see FIG. 6 ) provided on the bracket 5 below the second button 4b and a locking pin 13 movably arranged in the pin hole. At the same time, the locking button 6a is on the bracket 5 The bottom is extended with a locking plate 14 that fits with the bottom of the bracket 5, and the locking plate 14 extends to the pin hole 16, wherein the upper end of the locking pin 13 is in contact with the lower surface 15 of the button, and the lower end of the locking pin 13 It is in snug contact with the locking plate 14 .

With this structure, when the locking button 6a is slid to the locked state, as shown in FIG. 2, the lower boss 11 and the sliding contact surface 12 below the first button 4a occupy the required space for the activation of the first button 4a, The locking pin 13 below the second button 4b is due to being blocked by the locking plate 14, and the lower surface 15 of the locking pin 13 and the button, so the locking pin 13 has occupied the required space for starting the second button; when the locking button 6a is slid When reaching the unlocked state, as shown in Figure 3, the lower boss 11 is separated from the sliding contact surface 12, and the locking plate 14 also leaves the pin hole 16 at the same time, at this moment, the locking pin 13 can move in the pin hole, that is to say, the first The space required for the actuation of the first button 4a and the second button 4b is released, and the switch can be actuated freely.

Figures 4-6 show the modified structure of the first embodiment. As shown in the figure, compared with the first embodiment, this modified structure is provided with return springs 7a and 7b under the first button 4a and the second button 4b. Meanwhile, the return spring 7 b is disposed between the locking pin 13 and the pin hole 16 . The return spring of this modified structure can also be applied in the following embodiments. When the locking mechanism is a locking pin and a pin hole, preferably the returning spring is arranged between the locking pin and the pin hole.

7-9 show the second embodiment of the ON-OFF-ON bridge switch with locking mechanism of the present invention. As shown in FIG. 7 , the difference between this embodiment and the first embodiment is that: the edge of the first button 4a extends toward the direction of the slide rail 6b to form a rib 23 parallel to the slide rail 6b, which has an upper surface 23a and the lower surface 23b; wherein the locking mechanism of the first button includes the lower boss 21 formed below the locking button 6a extending to the lower surface 23b, and the lower surface 23b is fitted with the lower boss 21 Sliding contact surface; the locking mechanism of the second button includes the upper boss 22 formed above the upper surface 23a of the locking button 6a, and the upper surface 23a is a sliding contact surface that fits with the upper boss 22 .

That is to say, between the lower boss 21 and the upper boss 22, there is formed a channel that cooperates with the rib 23, so that the lower boss 21 and the upper boss 22 can slide along the rib 23 to achieve locking/locking. The purpose of unlocking.

With this structure, when the locking button 6a is slid to the locked state, as shown in Figure 8, the lower boss 21 and the lower surface 23b occupy the required space for the activation of the first button 4a, and the upper boss 22 and the upper surface 23a occupies the required space for the activation of the second button 4b; when the locking button 6a is slid to the unlocked state, as shown in Figure 9, the lower boss 21 is separated from the lower surface 23b, and the upper boss 22 is also separated from the upper surface The surface 23a is separated, the space required for the actuation of the first key 4a and the second key 4b is released, and the switch can be freely actuated.

As a preference of this embodiment, as shown in Fig. 8 and Fig. 9, the upper boss 22, the lower boss 21, and the raised rib 23 are all in concave shape, and the concave shape is symmetrical up and down, while the concave The longitudinal width of the glyph-shaped protruding parts 22c, 21c, 23c on the slide rail is smaller than the width of the glyph-shaped concave parts 22d, 21d (see FIG. 8 ), 23d on the longitudinal direction of the slide rail.

The above preferences can also be applied to the lower boss and the first key 4a in the first embodiment.

It should be noted that, in this embodiment, the rib 23 parallel to the slide rail 6b does not necessarily have to extend from the edge of the first button 4a toward the slide rail 6b. The following structure can also be used: the locking mechanism of the first button can be as described in the first embodiment, including the lower boss formed under the locking button extending to the bottom of the first button, and at the same time, the lower surface of the first button is provided with The sliding contact surface fitted with the lower boss; in addition, the locking mechanism of the second button includes the upper boss formed above the locking button extending to the top of the first button, and meanwhile, the upper surface of the first button is provided with an upper convex table fit sliding contact surface.

10-12 show the third embodiment of the ON-OFF-ON bridge switch with locking mechanism of the present invention. As shown in FIG. 10 , the difference between this embodiment and the first embodiment is that both the locking mechanism of the first key and the locking mechanism of the second key are locking pins. in:

The locking mechanism of the first button includes a first pin hole 33 (see FIG. 12 ) provided on the bracket 5 below the first button 4 a and a first locking pin 31 movably arranged in the first pin hole 33 ;

The locking mechanism of the second button includes a second pin hole 36 (see FIG. 12 ) provided on the bracket 5 below the second button 4 b and a second locking pin 34 movably arranged in the second pin hole 36 ;

At the same time, the locking button 6a is extended with a locking plate 37 attached to the bottom of the bracket 5 at the bottom of the bracket 5, and the locking plate 37 extends to the first pin hole 33 and the second pin hole 36, wherein the first locking pin 31 is in contact with the lower surface 32 of the first button 4a, and the upper end of the second locking pin 34 is in contact with the lower surface 35 of the second button 4b. In addition, the first locking pin 31 and the second locking pin The lower ends of 34 are all in contact with the locking plate 37.

With this structure, when the locking button 6a is slid to the locked state, as shown in FIG. close, thus the locking pin 31 occupies the required space for the start of the first key 4a, the locking pin 34 below the second key 4b is blocked by the locking plate 37, and the locking pin 34 is attached to the lower surface 35 of the key, so The locking pin 34 occupies the required space for the activation of the second button 4b; when the locking button 6a is slid to the unlocked state, as shown in Figure 12, the locking plate 37 leaves the first pin hole 33 and the second pin hole 36, At this time, the first locking pin 31 and the second locking pin 34 can move in their respective pin holes, that is to say, the space required for the activation of the first key 4a and the second key 4b is released, and the switch can be activated freely.

Preferably, the first pin hole 33 and the second pin hole 36 are relatively perpendicular to the intermediate shaft 4c, so that the width of the diameter of one pin hole of the locking plate 37 can lock two pin holes.

As a further preference of this embodiment, as shown in FIG. 12, return springs 7a, 7b are provided between the first locking pin 31 and the first pin hole 33, and between the second positioning pin 34 and the second pin hole 36. .

The present invention has been described in detail above in conjunction with the accompanying drawings and specific embodiments, but the present invention is not limited thereto. Any person skilled in the art can, within the scope of their knowledge and without violating the purpose of the present invention, Make various changes and modifications to it.

Claims (8)

1. the ON-OFF-ON bridge switch with locking mechanism, comprises switches set and support, and switches set is fixed on support, and described switches set comprises the first button, the second button, connects jack shaft and the Electricity Functional module of two buttons, it is characterized in that also comprising:

Slide mechanism: described slide mechanism comprises slide rail and lock-button, what described slide rail was parallel with jack shaft is arranged on the support of the first button homonymy; Described lock-button and slide rail are slidably matched; And

The locking mechanism of the locking mechanism of the first button and the second button: the locking mechanism of the locking mechanism of the first button and the second button occupies respectively the required space of startup of the first button and the second button in the time that slide mechanism slides into lock-out state; The lower convex platform that the below that extends to the first button that the locking mechanism of described the first button comprises lock-button forms, meanwhile, below the first button, surface is provided with the sliding contact surface of fitting with lower convex platform; The pin-and-hole arranging on the support of the below that the locking mechanism of described the second button comprises the second button and be movably arranged on the stop pin in pin-and-hole, simultaneously, lock-button is extended with the lockplate of fitting with frame bottom in frame bottom, described lockplate extends to pin-and-hole place, wherein, the below surface label splice grafting of the upper end of described stop pin and the second button touches, and the lower end of stop pin contacts with lockplate laminating.

2. the ON-OFF-ON bridge switch with locking mechanism according to claim 1, it is characterized in that: the position above lower convex platform of described lower convex platform and the first button is concave shape, described concave shape is symmetrical up and down, simultaneously the boss of concave shape slide rail longitudinally on width be less than depression position slide rail longitudinally on width.

3. according to the ON-OFF-ON bridge switch with locking mechanism described in claim 1-2 any one, it is characterized in that: below the first button and the second button, be provided with back-moving spring.

4. the ON-OFF-ON bridge switch with locking mechanism according to claim 3, is characterized in that: in the time that described locking mechanism is pin-and-hole and stop pin, back-moving spring is arranged between stop pin and pin-and-hole.

5. there is the ON-OFF-ON bridge switch of locking mechanism, comprise switches set and support, switches set is fixed on support, described switches set comprises the first button, the second button, connects jack shaft and the Electricity Functional module of two buttons, it is characterized in that also comprising: slide mechanism: described slide mechanism comprises slide rail and lock-button, what described slide rail was parallel with jack shaft is arranged on the support of the first button homonymy; Described lock-button and slide rail are slidably matched; And the locking mechanism of the locking mechanism of the first button and the second button: the locking mechanism of the locking mechanism of the first button and the second button occupies respectively the required space of startup of the first button and the second button in the time that slide mechanism slides into lock-out state; The first pin-and-hole arranging on the support of the below that the locking mechanism of described the first button comprises the first button and be movably arranged on the first stop pin in the first pin-and-hole;

The second pin-and-hole arranging on the support of the below that the locking mechanism of described the second button comprises the second button and be movably arranged on the second stop pin in the second pin-and-hole; Simultaneously, lock-button is extended with the lockplate of fitting with frame bottom in frame bottom, described lockplate extends to the first pin-and-hole and the second pin-and-hole place, wherein, the below surface label splice grafting of the upper end of described the first stop pin and the first button touches, the below surface label splice grafting of the upper end of described the second stop pin and the second button touches, and in addition, the lower end of the first stop pin and the second stop pin all contacts with lockplate laminating.

6. the ON-OFF-ON bridge switch with locking mechanism according to claim 5, is characterized in that, relative to jack shaft between described the first pin-and-hole and the second pin-and-hole.

7. according to the ON-OFF-ON bridge switch with locking mechanism described in claim 5 or 6, it is characterized in that: below the first button and the second button, be provided with back-moving spring.

8. the ON-OFF-ON bridge switch with locking mechanism according to claim 7, is characterized in that: in the time that described locking mechanism is pin-and-hole and stop pin, back-moving spring is arranged between stop pin and pin-and-hole.