CN209874675U

CN209874675U - Automatic telescopic handle

Info

Publication number: CN209874675U
Application number: CN201822238398.9U
Authority: CN
Inventors: 龙占东
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-28
Filing date: 2018-12-28
Publication date: 2019-12-31
Anticipated expiration: 2028-12-28

Abstract

The utility model discloses an automatic telescopic handle, which comprises a handle seat, wherein a handle seat barrel is arranged in the middle of the handle seat, a special-shaped hole and four screw counter bores are arranged at the bottom of the handle seat barrel, a handle seat insert is arranged in the middle of the special-shaped hole, four sunken connecting screw holes are arranged above and below the handle seat insert, and the outside of the handle seat insert is connected with the handle seat barrel through the counter screws; the handle also comprises a gear, a pinion, a motor, a circuit board, an outer Hall switch, an inner Hall switch and the like, the handle can extend out to open the cabinet door by inputting correct passwords, and the handle is automatically hidden after the door is locked.

Description

Automatic telescopic handle

Technical Field

The utility model relates to a hidden handle of safe box, rifle cabinet etc. mainly used replaces current ordinary handle, the utility model discloses can also apply to burglary-resisting door, security door lock, safe deposit box electronic control panel.

Background

The existing safe box, gun cabinet and the like are opened through an exposed handle, the exposed handle needs foam protection, and the protected exposed handle is easy to damage in the transportation process, so that the use of the cabinet is influenced. The existing hidden handle controls the inlet and outlet of the handle through mechanical transmission, and the extending speed is high. The original mode that the micro switch controls the inlet and outlet of the handle is improved to the mode that the magnet inducts the Hall switch to control the motor to stop rotating, direct contact is changed into magnetic control, product faults are reduced, and meanwhile assembly is simple. Secondly, the control mainboard integration is at electronic lockset at present, and the assembly of handle is also more simple and convenient, and the motor setting is outside the handle at present, just with inspection and maintenance. Thirdly, the utility model discloses the measure of emergent opening when motor or circuit trouble are considered to the product key, implement also simply. The utility model discloses the full-automatic motor stretches out hides the handle is through anti-theft lock control motor drive gear and screw rod brake valve lever's business turn over, opens steadily, and easy operation is convenient, has improved the intelligent level of product, more has the novelty. The utility model discloses simple structure, processing is convenient. The utility model discloses security protection products such as electronic control's treasury door, movable storehouse, activity treasury, burglary-resisting door, gun cabinet, secret cabinet also are applicable to simultaneously.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a full-automatic motor stretches out hides handle, and this mechanism design is succinct, and the transmission is nimble, opens easily freely, and is safer and more reliable.

The technical scheme of the utility model is that: an automatic telescopic handle comprises a handle seat, wherein a handle seat barrel is arranged in the middle of the handle seat, a special-shaped hole and four screw counter bores are formed in the bottom of the handle seat barrel, a handle seat insert is arranged in the middle of the special-shaped hole, four sunken connecting screw holes are formed in the upper part and the lower part of the handle seat insert, and the outer surface of the handle seat insert is connected with the handle seat barrel through countersunk screws; a circular hole is formed in the upper middle of the handle seat insert, two fixing columns are arranged on the reverse side of the handle seat insert, a handle rotating shaft hole is formed in the middle of the handle seat insert, a guide hole is formed in the right middle of the handle seat insert, and a circuit board positioning hole is formed in the upper surface of the guide hole; a pinion penetrates through the inside of the round hole, bosses are arranged at two ends of the pinion, a boss at one end penetrates through the round hole, a threaded hole is formed in the center of the pinion, a motor support is arranged at the other end of the pinion, three holes are formed in the side surface of the motor support, a gear fixing hole is formed in the middle of the motor support, support fixing holes are formed in two sides of the motor support, the support fixing holes are fixedly connected with fixing columns through screws, three motor fixing holes are formed in the top of the motor support; a lower motor shell is arranged above the motor bracket, three mounting through holes are formed in the periphery of the lower motor shell, and the motor fixing hole is connected with the mounting through holes through three screws I; the side surface of the lower motor shell is provided with a middle large hole and motor mounting holes at two sides, a motor is arranged above the lower motor shell, the end surface of the motor is provided with two threaded holes I and a rotating shaft, the rotating shaft is externally connected with a gear, the gear is meshed with a pinion, an upper motor shell is arranged above the lower motor shell, and the upper motor shell is connected with the lower motor shell through a screw II; a circuit board is connected below the circuit board fixing column through a third screw, one end of the circuit board is inserted into the circuit board positioning hole, and an outer Hall switch and an inner Hall switch are respectively arranged inside and outside the circuit board.

A handle shaft is arranged in a rotating shaft hole in the middle of the handle seat insert, the handle shaft can rotate and move back and forth, a flat square and a threaded hole II are arranged at the inner end of the handle shaft, a flat square I and a threaded hole III are arranged at the outer end of the handle shaft, and a clamping groove is formed in the position, adjacent to the flat square I, of the handle shaft; a screw rod is arranged in a central threaded hole of the pinion, a boss I is arranged at the outer end of the screw rod, a wafer is connected to the outermost end of the screw rod, a round hole I is arranged in the center of the wafer, an upper round hole and a right round hole are arranged at the edge of the wafer, the outer end of the screw rod penetrates through the upper round hole, the outer surface of the screw rod is fixed through a gasket and a screw II; a clamping ring is arranged in the clamping groove of the handle shaft, and the handle shaft penetrates through a circular hole in the center of the wafer and is externally connected with a gripper; the outside of the right round hole is connected with a guide rod through a first gasket and a fifth screw, a round groove is formed in the guide rod, and a magnet is arranged in the round groove.

The handle seat mold insert is equipped with U type draw-in groove one at the innermost end, is equipped with the gear one of taking the boss in the U type draw-in groove one, and the gear center of taking the boss is equipped with the oblate square hole, and the oblate square hole links to each other with the oblate square of handle axle, and the handle axle can slide in the oblate square hole, and the screw hole two of handle axle inner has two bolts of gasket, prevents that the handle from falling out.

A flat round hole is formed in the center of the back side of the gripper, and a round hole II and a threaded hole IV are formed in the left side and the right side of the flat round hole respectively; a first magnet is arranged in the round hole II on two sides of the flat round hole, a second magnet gland is arranged on two sides of the flat round hole, a countersunk hole is formed in one end of the second magnet gland, a second boss is arranged on the other end of the second magnet gland, and the second magnet gland is fixed in the threaded hole IV through a countersunk screw IV; two sides of the middle of the front surface of the gripper are provided with a first deep-recessed groove, one of the first deep-recessed grooves is provided with a slope, and the first deep-recessed groove is used for opening the gripper in an emergency when a system is in a power failure state; the outer most circular decoration lid that is equipped with of tongs, circular decoration lid reverse side are equipped with nonrust iron sheet, and nonrust iron sheet can press slope one side with the magnetite one absorption in the aspect of the tongs, and circular decoration lid can easily take out.

The handle comprises a handle seat, a handle seat insert, a motor, a circuit board, an outer Hall switch, an inner Hall switch and the like, when the safe case inputs a correct password, the motor starts to rotate anticlockwise, a gear rotates anticlockwise, a pinion also rotates anticlockwise, a lead screw slowly moves outwards to push a wafer to move outwards to drive a handle shaft to move outwards, a guide rod moves outwards simultaneously, when a magnet moving to a groove of the guide rod is aligned with the outer Hall switch of the circuit board, the motor stops rotating, and a handle gripper is rotated to drive a gear with a boss to drive a transmission mechanism in the door of the safe case; the safe case is through closing the cabinet door, and the anticlockwise rotation tongs targets in place, and the system receives the signal, and the motor rotates clockwise, and the gear rotates clockwise, and the pinion also rotates clockwise, and the lead screw slowly moves inwards, and the pulling disk moves inwards, drives handle axle and moves inwards, and the guide bar moves inwards simultaneously, and when the magnetite that moves the guide bar recess and the interior hall switch of circuit board just to the time, the motor stall, the safe case handle is hidden.

The utility model has the advantages that: the existing safe box, gun cabinet and the like are opened through an exposed handle, the exposed handle needs foam protection, and the protected exposed handle is easy to damage in the transportation process, so that the use of the cabinet is influenced. The existing hidden handle controls the inlet and outlet of the handle through mechanical transmission, and the extending speed is high. The original mode that the micro switch controls the inlet and outlet of the handle is improved to the mode that the magnet inducts the Hall switch to control the motor to stop rotating, direct contact is changed into magnetic control, product faults are reduced, and meanwhile assembly is simple. Secondly, the control mainboard integration is at electronic lockset at present, and the assembly of handle is also more simple and convenient. Thirdly, the utility model discloses the measure of emergent opening when motor or circuit trouble are considered to the product key, implement also simply. The utility model discloses the full-automatic motor stretches out hides the handle is through anti-theft lock control motor drive gear and screw rod brake valve lever's business turn over, opens steadily, and easy operation is convenient, has improved the intelligent level of product, more has the novelty. The utility model discloses simple structure, processing is convenient. The utility model discloses security protection products such as electronic control's treasury door, movable storehouse, activity treasury, burglary-resisting door, gun cabinet, secret cabinet also are applicable to simultaneously.

Drawings

FIG. 1 is a perspective view of the automatic retractable handle of the present invention;

FIG. 2 is a perspective view of the handle seat cylinder of the automatic telescopic handle of the present invention;

FIG. 3 is a front view of the handle assembly of the automatic telescopic handle of the present invention (hidden handle);

FIG. 4 is a perspective view of an automatic retractable handle seat insert of the present invention;

FIG. 5 is a perspective view (rear portion) of the handle assembly of the automatic telescopic handle of the present invention;

FIG. 6 is a perspective view of the pinion of the automatic telescopic handle of the present invention;

FIG. 7 is a perspective view of the motor support with the automatic retractable handle of the present invention;

FIG. 8 is a perspective view of the lower motor casing of the automatic telescopic handle of the present invention;

FIG. 9 is a perspective view of the motor with an automatic retractable handle of the present invention;

FIG. 10 is a front view of the circuit board with the automatic retractable handle of the present invention;

FIG. 11 is a sectional view of the automatic telescopic handle assembly A-A of the present invention;

FIG. 12 is a front view of the handle shaft of the automatic retractable handle of the present invention;

FIG. 13 is a top view of the handle shaft of the automatic telescopic handle of the present invention;

FIG. 14 is a bottom view of the handle shaft of the automatic telescopic handle of the present invention;

FIG. 15 is a front view of the automatic retractable handle wafer of the present invention;

fig. 16 is a perspective view of the automatic telescopic handle of the present invention (hidden grip);

FIG. 17 is a perspective view of the guide bar of the automatic telescopic handle of the present invention;

FIG. 18 is a front view of the gear with a boss of the automatic telescopic handle of the present invention;

FIG. 19 is a rear view of the automatic telescopic handle gripper of the present invention;

FIG. 20 is a C-C sectional view of the automatic telescopic handle gripper assembly of the present invention;

FIG. 21 is a perspective view of the automatic retractable handle magnet cover of the present invention;

FIG. 22 is a front view of the automatic telescopic handle gripper of the present invention;

figure 23 is a cross-sectional view of the automatic telescopic handle gripper of the utility model D-D

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Refer to fig. 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10. The automatic telescopic handle comprises a handle seat 1, wherein a handle seat barrel 2 is arranged in the middle of the handle seat 1, the bottom of the handle seat barrel 2 is provided with a special-shaped hole 3 and four screw counter bores 4, a handle seat insert 5 is arranged in the middle of the special-shaped hole 3, four sunken connecting screw holes 6 are arranged above and below the handle seat insert 5, and the outer surface of the handle seat insert 5 is connected with the handle seat barrel 2 through countersunk screws 7; a round hole 8 is arranged on the upper part of the middle of the handle seat insert 5, two fixing columns 9 are arranged on the reverse side of the handle seat insert 5, a handle rotating shaft hole 10 is arranged in the middle of the handle seat insert 5, a guide hole 11 is arranged on the right side of the middle of the handle seat insert 5, and a circuit board positioning hole 12 is arranged on the guide hole 11; a pinion 13 penetrates through the round hole 8, bosses 14 are arranged at two ends of the pinion 13, the boss 14 at one end penetrates through the round hole 8, a threaded hole 15 is formed in the center of the pinion 13, a motor support 16 is arranged at the other end of the pinion 13, three holes are formed in the side surface of the motor support 16, a gear fixing hole 17 is formed in the middle of the motor support 16, support fixing holes 18 are formed in two sides of the motor support, the support fixing holes 18 are fixedly connected with fixing columns 9 through screws 19, three motor fixing holes 20 are formed in the top of the motor support 16, and circuit; a lower motor shell 22 is arranged above the motor support 16, three mounting through holes 23 are formed in the periphery of the lower motor shell 22, and the motor fixing hole 20 is connected with the mounting through holes 23 through three screws I24; the side surface of the lower motor shell 22 is provided with a middle large hole 25 and motor mounting holes 26 at two sides, a motor 27 is arranged above the lower motor shell 22, the end surface of the motor 27 is provided with two threaded holes I28 and a rotating shaft 29, the rotating shaft 29 is externally connected with a gear 30, the gear 30 is meshed with the pinion 13, an upper motor shell 31 is arranged above the lower motor shell 22, and the upper motor shell 31 is connected with the lower motor shell 22 through a screw II 32; the lower part of the circuit board fixing column 21 is connected with a circuit board 34 through a third screw 33, one end of the circuit board 34 is inserted into the circuit board positioning hole 12, and an outer Hall switch 35 and an inner Hall switch 36 are respectively arranged inside and outside the circuit board 34.

Referring to fig. 11, 12, 13, 14, 15, 16 and 17, a handle shaft 37 is arranged in a middle handle rotating shaft hole 10 of a handle seat insert 5, the handle shaft 37 can rotate and move back and forth, a flat square 38 and a threaded hole II 39 are arranged at the inner end of the handle shaft 37, a flat square I40 and a threaded hole III 41 are arranged at the outer end of the handle shaft 37, and a clamping groove 42 is arranged at the adjacent position of the flat square I40 of the handle shaft 37; a screw rod 43 is arranged in a central threaded hole 15 of the pinion 13, a boss I44 is arranged at the outer end of the screw rod 43, a wafer 45 is connected to the outermost end of the screw rod 43, a round hole I46 is arranged at the center of the wafer 45, an upper round hole 47 and a right round hole 48 are arranged at the edge of the wafer, the outer end of the screw rod 43 penetrates through the upper round hole 47, the outer side of the screw rod 43 is fixed through a gasket 49 and a screw II 50; a clamping ring 51 is arranged at the position of the clamping groove 42 of the handle shaft 37, and the handle shaft 37 penetrates through a first central circular hole 46 of the wafer 45 and is externally connected with a hand grip 52; a guide rod 55 is connected to the outer surface of the right round hole 48 through a first gasket 53 and a fifth screw 54, a round groove 56 is formed in the guide rod 55, and a magnet 57 is arranged in the round groove 56; the handle seat insert 5 innermost end is equipped with U type draw-in groove 58, is equipped with the gear 59 of taking the boss in the U type draw-in groove 58, and the gear 59 center of taking the boss is equipped with oblate hole 60, and oblate hole 60 links to each other with the oblate 38 of handle axle 37, and handle axle 37 can slide in oblate hole 60, and the screw hole two 39 of handle axle 37 inner has two 61 bolts 62 of gasket, prevents that the handle from falling out.

Referring to fig. 18, 19, 20, 21, 22 and 23, a flat round hole 63 is formed in the center of the back surface of the hand grip 52, and a round hole two 64 and a threaded hole four 65 are respectively formed in the left side and the right side of the flat round hole 63; first magnets 66 are arranged in the circular hole II 64 on two sides of the flat circular hole 63, magnet pressing covers 67 are arranged on two sides of the flat circular hole, a countersunk hole 68 is formed in one end of each magnet pressing cover 67, a boss II 69 is arranged on the other end of each magnet pressing cover 67, and the magnet pressing covers 67 are fixed to the threaded holes IV 65 through countersunk screws IV 70; two sides of the middle of the front surface of the hand grip 52 are provided with a first deep-recessed groove 71, one of which is provided with a slope 72, and the first groove 71 is used for opening the hand grip 52 in an emergency when the system is not powered; the circular decorative cover 73 is arranged on the outermost side of the hand grip 52, the stainless iron sheet 74 is arranged on the reverse side of the circular decorative cover 73, the stainless iron sheet 74 can be adsorbed to the first magnet 66 on the aspect of the hand grip 52, one side of the slope 72 is pressed, and the circular decorative cover 73 can be easily taken out.

When in use: extending out a handle of the safety box: when the safe case inputs a correct password, the motor 27 starts to rotate anticlockwise, the gear 30 rotates anticlockwise, the pinion 13 also rotates anticlockwise, the screw rod 43 slowly moves outwards to push the wafer 45 to move outwards to drive the handle shaft 37 to move outwards, the guide rod 55 moves outwards simultaneously, when the magnet 57 moving to the groove 56 of the guide rod 55 is aligned with the outer Hall switch 35 of the circuit board 34, the motor 27 stops rotating, and the handle gripper 52 is rotated to drive the first gear 59 with a boss of the safe case to drive the transmission mechanism in the door.

Hiding a handle of the safety box: when the safe is closed, the handle 52 rotates anticlockwise to be in place, the system receives a signal, the motor 27 rotates clockwise, the gear 30 rotates clockwise, the pinion 13 also rotates clockwise, the screw rod 43 moves inwards slowly, the wafer 45 is pulled to move inwards, the handle shaft 37 is driven to move inwards, the guide rod 55 moves inwards at the same time, when the magnet 57 moving to the groove 56 of the guide rod 55 is aligned with the inner Hall switch 36 of the circuit board 34, the motor 27 stops rotating, and the handle of the safe is hidden.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. An automatic telescopic handle, its characterized in that: the automatic telescopic handle comprises a handle seat (1), wherein a handle seat barrel (2) is arranged in the middle of the handle seat (1), a special-shaped hole (3) and four screw counter bores (4) are formed in the bottom of the handle seat barrel (2), a handle seat insert (5) is arranged in the middle of the special-shaped hole (3), four sunken connecting screw holes (6) are formed in the upper part and the lower part of the handle seat insert (5), and the outer surface of the handle seat insert (5) is connected with the handle seat barrel (2) through countersunk screws (7); a round hole (8) is arranged on the upper middle part of the handle seat insert (5), two fixing columns (9) are arranged on the reverse side of the handle seat insert, a handle rotating shaft hole (10) is arranged in the middle of the handle seat insert (5), a guide hole (11) is arranged on the right middle part of the handle seat insert, and a circuit board positioning hole (12) is arranged on the guide hole (11); a small gear (13) penetrates through the round hole (8), bosses (14) are arranged at two ends of the small gear (13), the boss (14) at one end penetrates through the round hole (8), a threaded hole (15) is formed in the center of the small gear (13), a motor support (16) is arranged at the other end of the small gear (13), three holes are formed in the side surface of the motor support (16), a gear fixing hole (17) is formed in the middle of the motor support, support fixing holes (18) are formed in two sides of the motor support, the support fixing holes (18) are fixedly connected with fixing columns (9) through screws (19), three motor fixing holes (20) are formed in the top of the motor support (; a lower motor shell (22) is arranged above the motor support (16), three mounting through holes (23) are formed in the periphery of the lower motor shell (22), and the motor fixing hole (20) is connected with the mounting through holes (23) through three screws I (24); the side surface of the lower motor shell (22) is provided with a middle large hole (25) and motor mounting holes (26) on two sides, a motor (27) is arranged above the lower motor shell (22), the end surface of the motor (27) is provided with two threaded holes I (28) and a rotating shaft (29), the rotating shaft (29) is externally connected with a gear (30), the gear (30) is meshed with the pinion (13), an upper motor shell (31) is arranged above the lower motor shell (22), and the upper motor shell (31) is connected with the lower motor shell (22) through a screw II (32); a circuit board (34) is connected below the circuit board fixing column (21) through a third screw (33), one end of the circuit board (34) is inserted into the circuit board positioning hole (12), and an outer Hall switch (35) and an inner Hall switch (36) are respectively arranged inside and outside the circuit board (34).

2. The automatic telescopic handle according to claim 1, characterized in that: a handle shaft (37) is arranged in a rotating shaft hole (10) in the middle of the handle seat insert (5), the handle shaft (37) can rotate and move back and forth, a flat square (38) and a threaded hole II (39) are arranged at the inner end of the handle shaft (37), a flat square I (40) and a threaded hole III (41) are arranged at the outer end of the handle shaft (37), and a clamping groove (42) is formed in the position, adjacent to the flat square I (40), of the handle shaft (37); a screw rod (43) is arranged inside a central threaded hole (15) of the pinion (13), a boss I (44) is arranged at the outer end of the screw rod (43), a wafer (45) is connected to the outermost end of the screw rod, a round hole I (46) is arranged at the center of the wafer (45), an upper round hole (47) and a right round hole (48) are arranged at the edge of the wafer, the outer end of the screw rod (43) penetrates through the upper round hole (47), the outside of the screw rod is fixed with a screw II (50) through a gasket (49), and the screw rod (; a clamping ring (51) is arranged at the position of the clamping groove (42) of the handle shaft (37), and the handle shaft (37) penetrates through a first central circular hole (46) of the wafer (45) and is externally connected with a gripper (52); the outside of the right round hole (48) is connected with a guide rod (55) through a first gasket (53) and a fifth screw (54), a round groove (56) is formed in the guide rod (55), and a magnet (57) is arranged in the round groove (56).

3. The automatic telescopic handle according to claim 1, characterized in that: handle seat mold insert (5) innermost end is equipped with U type draw-in groove (58), be equipped with in U type draw-in groove (58) take gear (59) of boss, gear (59) center of taking the boss is equipped with flat square hole (60), flat square hole (60) link to each other with flat square (38) of handle axle (37), handle axle (37) can slide in flat square hole (60), handle axle (37) inner screw hole two (39) and have two (61) of gasket bolt (62), prevent that the handle from falling out.

4. The automatic telescopic handle according to claim 1, characterized in that: a flat round hole (63) is formed in the center of the back surface of the gripper (52), and a round hole II (64) and a threaded hole IV (65) are formed in the left side and the right side of the flat round hole (63) respectively; a first magnet (66) is arranged in a second round hole (64) on two sides of the flat round hole (63), a second magnet gland (67) is arranged on two sides of the flat round hole, one end of the second magnet gland (67) is provided with a countersunk hole (68), the other end of the second magnet gland is provided with a second boss (69), and the second magnet gland (67) is fixed in a fourth threaded hole (65) through a fourth countersunk screw (70); deep-recessed grooves I (71) are formed in the two sides of the middle of the front surface of the gripper (52), a side slope (72) is formed in one side of each groove I, and the grooves I (71) are used for opening the gripper (52) in an emergency when a system is not powered; the outer side of the handle (52) is provided with a circular decorative cover (73), the reverse side of the circular decorative cover (73) is provided with a stainless iron sheet (74), the stainless iron sheet (74) can be adsorbed with a magnet I (66) on the aspect of the handle (52), one side of the slope (72) is pressed, and the circular decorative cover (73) can be easily taken out.

5. The automatic telescopic handle according to claim 1, characterized in that: the handle comprises a handle seat (1), a handle seat insert (5), a motor (27), a circuit board (34), an outer Hall switch (35), an inner Hall switch (36) and the like, when the safe case inputs a correct password, the motor (27) starts to rotate anticlockwise, a gear (30) rotates anticlockwise, a pinion (13) also rotates anticlockwise, a lead screw (43) slowly moves outwards to push a wafer (45) to move outwards to drive a handle shaft (37) to move outwards, a guide rod (55) simultaneously moves outwards, when a magnet (57) moving to a groove (56) of the guide rod (55) is aligned with the outer Hall switch (35) of the circuit board (34), the motor (27) stops rotating, a handle gripper (52) is rotated, and a first gear (59) with a boss can be driven to drive a transmission mechanism in the safe case door; the safe is through closing the cabinet door, anticlockwise rotation tongs (52) target in place, the system receives the signal, motor (27) clockwise rotation, gear (30) clockwise rotation, pinion (13) also clockwise rotation, lead screw (43) slowly moves inwards, pulling disk (45) move inwards, drive handle axle (37) move inwards, guide bar (55) simultaneously move inwards, when moving magnet (57) of guide bar (55) recess (56) and interior hall switch (36) of circuit board (34) when just facing, motor (27) stall, the safe handle is hidden.