TWI509650B - Forward/backward rotation switching mechanism - Google Patents

Description

Forward and reverse switching mechanism of switch device

The present invention relates to a switching structure applied to a switching device, and more particularly to a forward and reverse switching mechanism of a switching device.

Switches are indispensable for electrical equipment and electronic products. Refrigerators, televisions, extension cords, computers, video game consoles, etc. must be turned on or off by switches. Among them, push-type switches are the most common. A type of switch.

Referring to the first figure, an exploded view of a conventional push-type switch; as shown in the first figure, a conventional push-type switch 1' is used to control a motor of a power tool, which includes: a trigger button 10', a sliding mechanism 11', a first switching shaft 12', a second switching shaft 13', a power supply negative connection mechanism 14', a supporting mechanism 15', a connecting mechanism 16', a motor positive and negative terminal connection The mechanism 18', a power positive connection mechanism 19', a forward and reverse mechanism 20', a compensation electronic control circuit 21', a diode 22', a stop mechanism 17', a first tension spring 24', A second tension spring 25', a first covering body 231', a second covering body 232', and a heat dissipating mechanism 26'.

Continuing to refer to the first figure, and also refer to the second, third and fourth figures, which are respectively a perspective view of the positive and negative terminal connection mechanism of the motor, an exploded view of the forward and reverse mechanism, and a part of the conventional push-type switch. combination Figure. The motor positive and negative terminal connecting mechanism 18' has a positive terminal 181' and a negative terminal 182'. The positive terminal 181' and the negative terminal 182' are respectively connected to the positive and negative ends of the motor. Further, the motor positive and negative terminal connecting mechanism 18' further includes a housing 183' to cover the positive terminal 181' and the negative terminal 182'. In addition, the forward and reverse mechanism 20' has a first switch 201' and a second switch 202', wherein the first switch 201' is in contact with the connection mechanism 16' and the negative terminal 182'. And the second switch 202' is in contact with the power positive connection mechanism 19' and the positive terminal 181'.

In the conventional push switch 1', in particular, the first switch 201', the second switch 202' and the positive terminal 181', the negative terminal 182', the connection mechanism 16, and the power supply positive connection mechanism are changed. The contact relationship of 19' can change the direction of motor rotation. In addition, in conjunction with the motor positive and negative terminal connecting mechanism 18', the forward and reverse mechanism 20' further includes: a forward and reverse switching handle 205', a switching handle fixing piece 206', a third compression spring group 203', and a first Four compression spring sets 204'. The forward and reverse switching handle 205' has a rear pivot portion 2052' and a front pivot portion 2051'. The rear pivot portion 2052' has a plurality of holes 2053' thereon, and the first switcher 201' and the second switch The sub-portion 202' is bonded to the hole 2053'. In addition, the front pivot portion 2051 ′ is pivotally connected to the rear pivot portion 2052 ′, so the rear pivot portion 2051 ′ is moved relative to the rear pivot portion 2051 ′, so that the first switcher 201 ′′ and The contact relationship between the second switch 202' and the positive terminal 181', the negative terminal 182', the connection mechanism 16', and the power supply positive connection mechanism 19'.

Thus, through the above, we can know that the conventional push switch 1' can control the motor to perform forward or reverse rotation through the forward and reverse mechanism 20' in addition to the motor of the electric machine tool; however, The conventional push switch 1' still has the following shortcomings and disadvantages:

(1) When assembling, the first switch 201' and the second switch 202' are first inserted into the holes 2053' of the forward and reverse mechanism 20', and then the first switch 201' and the second switch 202 'With the forward and reverse mechanism 20' is directly disposed on the motor positive and negative terminal connection mechanism 18'; wherein, since the first switcher 201' and the second switcher 202' do not have any back hook design, assembly At this time, the first switcher 201' and the second switcher 202' may fall out of the holes 2053' of the forward and reverse mechanism 20', resulting in inconvenience in the process.

(2) There is no dust or dust-removing design between the rear pivot portion 2052' of the forward and reverse switching handle 205' and the front pivot portion 2051'. Therefore, after long-term use, dust will accumulate on the rear pivot portion 2052'. The pivotal connection with the front pivot portion 2051' affects the normal operation of the forward and reverse switching handle 205'.

(3) In addition, when the user wants to switch the motor to perform forward rotation or reverse rotation, the rear pivot portion 2052' is moved relative to the front pivot portion 2051', however, due to the rear pivot The portion 2052' is fixed by the switching handle fixing piece 206'. Once subjected to an external force, the rear pivot portion 2052' may be released from the fixing of the switching handle fixing piece 206', thereby affecting the normal switching of the motor rotation direction.

Through the above detailed description, we can easily know that there are still defects and shortcomings in the forward and reverse switching mechanism of the push switch of the presently used; in view of this, the inventors of the present case vigorously researched and created, and finally developed A forward and reverse switching mechanism of a switching device is provided.

A first object of the present invention is to provide a forward and reverse switching mechanism of a switch device, in which a terminal fastening portion is particularly provided in a terminal receiving groove, and a corresponding fastening portion is formed on the contact terminal; When the contact terminal is assembled in the terminal receiving groove, the engaging portion of the contact terminal buckles the terminal engaging portion in the terminal receiving groove, so that the contact terminal does not fall out of the terminal receiving groove. .

A second object of the present invention is to provide a forward/reverse switching mechanism of a switching device, which is provided with a plurality of dust-discharging grooves in particular at the periphery of the turntable; thus, when the forward-reverse switching mechanism of the switching device is in a large amount of dust In the environment, the dust exhausting grooves prevent dust from accumulating between the turntable and the cover body, so even in an environment with a large amount of dust, we do not have to worry about the fact that the turntable cannot be rotated.

A third object of the present invention is to provide a forward/reverse switching mechanism for a switch device that uses a terminal fixing body to bond and fix a turntable and a contact terminal, and fixes the terminal fixing body to the cover by a fixed ball and a ball return spring. In the body; when the forward and reverse switching mechanism of the switch device acts, unless the handle of the turntable is applied to turn the turntable in a reverse direction If it is pushed or vibrated by external force, it will not affect the direction of rotation of the forward and reverse switching mechanism of the switch device.

Therefore, in order to achieve the above object of the present invention, the inventor of the present invention proposes a forward/reverse switching mechanism of a switching device that can be mounted in a switching device to assist the switching device to control a positive rotation of a motor and In a reverse rotation, the forward and reverse switching mechanism of the switch device includes: a cover body having a corresponding groove on the top of the turntable, and the corresponding groove of the turntable has a sliding slot; a corresponding recess in the cover body relative to the turntable, wherein the turntable has a rotating handle and a fitting block, and the rotating handle is disposed in the sliding slot, the engaging block includes an inlay And a first terminal fixing body, comprising: a first receiving portion and a second receiving portion, the bottom of the engaging member is embedded in the first The accommodating portion is embedded in and accommodated in the second accommodating portion; and the two-terminal accommodating groove; a first contact terminal is disposed at a terminal of the terminal fixing body Between the slots; and a second contact terminal disposed at the end The other terminal accommodating groove of the fixing body, wherein the rotation of the rotating plate by applying a force to the rotating handle can drive the terminal fixing body to rotate, so that the first contact terminal and the second contact terminal are in contact with the a terminal inside the switch device to control the motor to perform the forward rotation or the reverse rotation.

In order to more clearly describe the forward and reverse switching mechanism of a switching device proposed by the present invention, an embodiment of the present invention will be described in detail below with reference to the drawings.

Please refer to FIG. 5, which is a perspective view of a switch device equipped with a forward-reverse switching mechanism of a switch device of the present invention; and also refers to the sixth figure, which is a forward-reverse switching mechanism of the switch device of the present invention. Explosion map. As shown in the fifth and sixth figures, the forward and reverse switching mechanism 1 of the switching device of the present invention can be installed in a switching device 2 to assist the switching device 2 in controlling the forward rotation of one of the motors. And a reverse rotation, the forward and reverse switching mechanism 1 of the switch device mainly includes: a cover body 11, a turntable 12, a terminal fixing body 13, a first contact terminal 14, a second contact terminal 15, and A plurality of terminal springs 18.

Please refer to the fifth and sixth figures, and please refer to the seventh, eighth, and eighth B drawings, respectively, the perspective view of the cover and the turntable, the perspective view of the terminal fixing body, and the other of the terminal fixing body. A perspective view of a perspective. As shown in the figure, the cover body 11 includes: a turntable corresponding groove 111, two spherical grooves 112, a plurality of fastening mechanisms 113, and a roundabout insert hole 114, wherein the turntable corresponding groove 111 has one The sliding groove 1111 is formed on the inner surface of the cover 11 corresponding to the corresponding groove 111 of the turntable. In addition, the fastening mechanisms 113 are formed on the periphery of the cover 11 for engaging the switch device 2; the round-back type insertion holes 114 are formed. The turntable is corresponding to the groove 111.

In the above, the turntable 12 is received in the cover 11 and corresponds to the corresponding groove 111 of the turntable. The turntable 12 has a rotating handle 121 and a fitting block 122, and the rotating handle 121 is The bracket block 122 includes a fitting member 1221 and an insertion handle 1222. In addition, the turntable 12 further includes a plurality of dust exhausting grooves 123 formed on the periphery of the turntable 12. The dust exhausting grooves 123 have the function of assisting the turntable 12 for dust discharge, and can prevent dust in an environment with a large amount of dust. It is deposited between the turntable 12 and the cover 11; therefore, even if the forward/reverse switching mechanism 1 of the switchgear of the present invention is in an environment having a large amount of dust, there is no fear that the turntable 12 cannot be rotated.

The terminal fixing body 13 further includes: a fitting block receiving groove 131, a two-terminal receiving groove 132, a ball receiving groove 133, and a plurality of spring receiving grooves 134, wherein the fitting block is received The slot 131 includes a first receiving portion 1311 and a second receiving portion 1312. In particular, when assembling the forward-reverse switching mechanism 1 of the switch device of the present invention, the top of the fitting member 1221 is coupled to the round-back type insertion hole 114, and the bottom of the fitting member 1221 is embedded in the first The insertion portion 1222 is embedded in and accommodated in the second receiving portion 1312. In this case, it must be additionally noted that the bypass portion 1141 is disposed around the bypass recess 114 in the corresponding groove 111 of the turntable, and the twist portion 1141 is extended with dust from the bypass insert 114 to invade the switch device. The path inside the forward and reverse switching mechanism 1 is the same It has a dustproof effect.

In the terminal fixing body 13 , the two terminal receiving slots 132 are configured to respectively receive the first contact terminal 14 and the second contact terminal 15 . The ball receiving groove 133 is disposed on the side of the terminal fixing body 13 for receiving a fixed ball 16 and a ball return spring 17; in the present invention, the turntable 12 is rotated by applying a force to the rotating handle 121. The terminal fixing body 13 can be rotated to make the first contact terminal 14 and the second contact terminal 15 contact the terminal inside the switching device 2 to control the motor to perform the forward rotation or the reverse rotation; Since the ball return spring 17 is a compression spring, when the terminal fixing body 13 stops rotating, the fixed ball 16 is pushed into the ball groove 112 by being pushed by the ball return spring 17, and is fixed by this manner. Terminal fixing body 13.

Further, in the terminal fixing body 13, the spring receiving grooves 134 are formed at the bottom of the terminal fixing body 13 for respectively receiving the terminal springs 18, so that the terminal springs 18 can be opposite to the terminals The first contact terminal 14 and the second contact terminal 15 in the terminal accommodating groove 132; thus, since the terminal spring 18 is a compression spring, the elastic force transmitted through the terminal springs 18 can assist the first contact terminal 14 and The second contact terminal 15 is in close contact with the terminal inside the switching device 2.

In addition, in order to prevent the first contact terminal 14 and the second contact terminal 15 from falling out of the terminal accommodating groove 132, in the forward/reverse switching mechanism 1 of the switching device of the present invention, as shown in FIG. 6 and FIG. Show, each terminal capacity The first slot 14 and the second contact terminal 15 respectively have two first fastening portions 141 and two second fastening portions 151; When the first contact terminal 14 and the second contact terminal 15 are assembled in the terminal receiving groove 132, the first contact terminal 14 and the second contact terminal 15 can be engaged by the engaging portions (141, 151) thereof. The terminal engaging portion 1321 in the terminal accommodating groove 132; thus, there is no need to worry about the occurrence of the contact terminal (14, 15) falling out of the terminal accommodating groove 132.

Thus, by the above description, the structure of the forward and reverse switching mechanism of the switching device of the present invention and its constituent elements have been completely and clearly disclosed, and, through the above, we can know that the present invention has the following advantages:

1. In the forward/reverse switching mechanism 1 of the switching device, in order to prevent the first contact terminal 14 and the second contact terminal 15 from falling out of the terminal receiving groove 132, the terminal receiving groove 132 is specially provided. The terminal fastening portion 1321 is formed with a corresponding fastening portion (141, 151) on the first contact terminal 14 and the second contact terminal 15; thus, when the first contact terminal 14 and the second contact terminal 15 are assembled to the terminal capacity When the groove 132 is disposed, the terminal engaging portion 1321 in the terminal receiving groove 132 can be fastened by the engaging portion (141, 151); thus, the contact terminal (14, 15) can be prevented from being generated from the terminal. The situation in which the slot 132 is dropped out.

2. In addition, in the forward and reverse switching mechanism 1 of the switching device, in order to prevent The external dust is intruded into the interior of the forward and reverse switching mechanism, and a plurality of dust exhausting grooves 123 are provided on the periphery of the turntable 12; thus, when the forward and reverse switching mechanism 1 of the switching device is in an environment with a large amount of dust At this time, the dust exhausting grooves 123 prevent dust from accumulating between the turntable 12 and the cover body 11, and therefore, even in an environment having a large amount of dust, there is no need to worry about the fact that the turntable 12 cannot be rotated.

3. In the above-mentioned second point, in addition, in the forward-reverse switching mechanism 1 of the switch device, the turn-around recess 114 in the corresponding groove 111 of the turntable is provided with a bypass portion 1141. The twisting portion 1141 is a path in which the dust-increasing self-returning hole 114 intrudes into the inside of the forward/reverse switching mechanism 1 of the switching device, and also has a dustproof effect.

4. In addition, in the forward-reverse switching mechanism 1 of the switching device, the turntable 12, the first contact terminal 14 and the second contact terminal 15 are combined with the terminal fixing body 13, and the terminal fixing body 13 is further The fixed ball 16 and the ball return spring 17 are fixed in the cover body 11; therefore, when the user applies the rotation handle 121 to rotate the turntable 12 in one direction, the motor is switched to perform the forward rotation (or In the reverse rotation, at this time, unless the rotating handle 121 is applied to rotate the turntable 12 in a reverse direction, even if it is pushed and vibrated by an external force, the forward and reverse switching mechanism 1 of the switching device is not affected. Control the direction of rotation of the motor.

The detailed description of the present invention is intended to be illustrative of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention. Equivalent implementations or modifications from the spirit of the invention are intended to be included in the scope of the invention.

1'‧‧‧Used push-button switch

10'‧‧‧ board machine button

11’‧‧‧Sliding mechanism

12’‧‧‧First switching axis

13’‧‧‧Second switching axis

14'‧‧‧Power negative connection mechanism

15’‧‧‧Support institutions

16’‧‧‧Connected institutions

17’‧‧‧stop agency

18'‧‧‧Motor positive and negative terminal connection mechanism

181’‧‧‧ positive terminal

182'‧‧‧negative terminal

183’‧‧‧Shell

19'‧‧‧Power positive connection mechanism

20’‧‧‧ Forward and reverse institutions

201’‧‧‧ first switcher

202’‧‧‧Second switcher

203'‧‧‧3rd compression spring set

204'‧‧‧4th compression spring set

205'‧‧‧ forward and reverse switching handle

2051’‧‧‧ Front Front

2052'‧‧‧ Rear Rear

2053’‧‧‧ Hole

206'‧‧‧Switching handle fixing piece

21'‧‧‧Compensated electronic control circuit

22’‧‧‧II

231'‧‧‧First cladding

232'‧‧‧second covering

24'‧‧‧First tension spring

25'‧‧‧Second tension spring

26’‧‧‧ Thermal Mechanism

1‧‧‧Switching device forward and reverse switching mechanism

11‧‧‧ Cover

111‧‧‧ Turntable corresponding groove

1111‧‧‧ chute

112‧‧‧Sphere groove

113‧‧‧Withholding mechanism

114‧‧‧Returned hole

1141‧‧‧Returned part

12‧‧‧ Turntable

121‧‧‧Transfer

122‧‧‧Chimeric blocks

1221‧‧‧ fittings

1222‧‧‧Insert handle

123‧‧‧Dust trench

13‧‧‧Terminal fixing body

131‧‧‧Chimeric block receiving slot

1311‧‧‧First Housing Department

1312‧‧‧Second Accommodation

132‧‧‧Terminal receiving slot

1321‧‧‧Terminal fastening

133‧‧‧Sphere accommodating slot

134‧‧‧Spring accommodating slot

14‧‧‧First contact terminal

141‧‧‧The first fastening department

15‧‧‧Second contact terminal

151‧‧‧Second Fasting Department

16‧‧‧Fixed sphere

17‧‧‧Sphere reset spring

18‧‧‧ terminal spring

2‧‧‧Switching device

The first figure is a perspective view of a conventional push-type switch; the second figure is a perspective view of the positive and negative terminal connection mechanism of the push-type switch; the third figure is an exploded view of the forward-reverse mechanism of the push-type switch; A partial mechanism combination diagram of a switch; a fifth diagram is a perspective view of a switch device for configuring a forward and reverse switching mechanism of a switch device of the present invention; and a sixth diagram is an exploded view of a forward and reverse switching mechanism of the switch device of the present invention The seventh diagram is a perspective view of the cover body and the turntable of the forward and reverse switching mechanism of the switch device; the eighth diagram is a perspective view of the terminal fixing body of the forward and reverse switching mechanism of the switch device; and the eighth B system terminal fixing body Another perspective view of the perspective.

1‧‧‧Switching device forward and reverse switching mechanism

11‧‧‧ Cover

111‧‧‧ Turntable corresponding groove

1111‧‧‧ chute

1141‧‧‧Returned part

113‧‧‧Withholding mechanism

114‧‧‧Returned hole

12‧‧‧ Turntable

121‧‧‧Transfer

123‧‧‧Dust trench

13‧‧‧Terminal fixing body

131‧‧‧Chimeric block receiving slot

132‧‧‧Terminal receiving slot

133‧‧‧Sphere accommodating slot

14‧‧‧First contact terminal

141‧‧‧The first fastening department

15‧‧‧Second contact terminal

151‧‧‧Second Fasting Department

16‧‧‧Fixed sphere

17‧‧‧Sphere reset spring

18‧‧‧ terminal spring

Claims (10)

A forward and reverse switching mechanism of a switching device can be installed in a switching device 2 to assist the switching device to control a forward rotation and a reverse rotation of a motor, and the forward and reverse switching mechanism of the switching device includes a cover body having a corresponding groove corresponding to the top of the turntable, and a corresponding slot and a retractable through hole are arranged on the corresponding groove of the turntable; a turntable is disposed on the turntable corresponding to the cover In the slot, wherein the turntable 12 has: a rotating handle, the bottom end of which is disposed in the sliding slot; and a fitting block, the fitting block includes a fitting member and an insertion handle; wherein The top of the mating member is coupled to the retractable through hole; the terminal fixing body has a fitting receiving groove, and includes a first receiving portion and a second receiving portion, the fitting member a bottom portion is embedded in the first receiving portion, and the insertion handle is embedded and received in the second receiving portion; and a two-terminal receiving groove; a first contact terminal is disposed on the a terminal receiving body of the terminal fixing body; and a second contact terminal Another terminal receiving grooves in the body of the submount, wherein, by the force in the crown of the turntable is rotated based fixing member may be rotatably driven by the terminal, such that the first contact terminal contacting the second The terminal contacts a terminal inside the switching device to control the motor to perform the forward rotation or the reverse rotation. The forward and reverse switching mechanism of the switch device of claim 1, wherein the terminal fixing body further comprises: a ball receiving groove for receiving a fixed ball and a ball return spring, the fixing The ball and the ball return spring are used to assist in fixing the terminal fixing body; and a plurality of spring receiving grooves are formed at the bottom of the terminal fixing body. The forward and reverse switching mechanism of the switch device according to claim 2, further comprising: a plurality of terminal springs respectively disposed in the spring receiving groove and being accommodated in the slots with respect to the terminals The first contact terminal and the second contact terminal, wherein the elastic force of the terminal springs can assist the first contact terminal and the second contact terminal to be closely connected to the terminal inside the switch device. The forward and reverse switching mechanism of the switch device of claim 2, wherein the cover further comprises: at least two spherical grooves formed on the inner surface of the cover corresponding to the corresponding grooves of the turntable Wherein, when the terminal fixing body stops rotating, the fixed ball body is inserted into the spherical body groove by being pushed by the ball return spring, thereby fixing the terminal fixing body; and a plurality of fastening mechanisms are formed in The periphery of the cover body is used to fasten the switch device. The forward and reverse switching mechanism of the switch device according to claim 1, wherein the turntable further comprises a plurality of dust extraction grooves formed on a periphery of the turntable for preventing dust from accumulating on the turntable and the cover. Between the bodies. The forward and reverse switching mechanism of the switch device according to claim 2, wherein the ball return spring is a compression spring. The forward and reverse switching mechanism of the switch device according to claim 2, wherein the terminal spring is a compression spring. The forward and reverse switching mechanism of the switch device according to the first aspect of the invention, wherein the terminal receiving groove is provided with at least one terminal fastening portion. The front and rear switching mechanism of the switch device of claim 8, wherein the first contact terminal has at least one first fastening portion for fastening the terminal fastening portion of the terminal receiving groove. . The forward and reverse switching mechanism of the switch device of claim 9, wherein the second contact terminal has at least one second fastening portion for fastening the terminal fastening portion of the terminal receiving groove. .