CN204878646U - Linear actuator pivot guide location cap - Google Patents

Abstract

The utility model relates to a linear actuator pivot guide location cap, including locking cap and axle sleeve, the ball socket has in the locking cap, and the axle sleeve is bulb formula axle sleeve, and bushing installation pours into fixed injecting glue hole of gluing into in the top of locking cap has to the ball socket in the ball socket. The beneficial effects of the utility model are that: the axle sleeve of this pivot guide location cap can carry out the translation in the ball socket of locking cap adjusts and rotates and adjust to translation sum of errors axial skewed error between adaptation pivot free end and the location cap prevents to fix a position the cap and to the extra yawing force of worm pivot output, makes the pivot better move.

Description

Linear actuators rotating shaft guiding positioning cap

Technical field

The utility model relates to a kind of linear actuators rotating shaft guiding positioning cap.

Background technique

Linear actuators (LinearActuator) mainly utilizes motor and worm and gear group to drive screw rod to rotate forward or backwards, the action that screw rod drives the nut on screw rod linearly to stretch out or retract, be widely used in the equipment such as sick bed, electrically propelled chair, or other need be done in the occasion of fore and aft motion.Worm screw in general linear actuator directly extends from axle center of motor or is connected to axle center of motor by shaft joint, worm screw must be formed with a free end away from one end of motor, in transmission process, the torsion that worm screw is born is quite large, and the worm screw only with one-way support is easily ruptured in engagement driving process.

Chinese patent 203537150U rotating shaft guiding location structure discloses a kind of rotating shaft guiding positioning cap that can support the free end of worm screw rotating shaft, this rotating shaft guiding positioning cap carries out translation location by the axle sleeve be enclosed within worm screw rotating shaft free end, overcome the concentricity issues between rotating shaft free end and positioning cap, avoid the lateral force that positioning cap is extra to worm screw rotating shaft output.

But in actual use, the concentricity between rotating shaft free end and positioning cap, except translation error, also exists axial skewed error, the existing rotating shaft guiding positioning cap that causes effectively cannot adjust this error.

Model utility content

Technical problem to be solved in the utility model is: provide a kind of linear actuators rotating shaft to guide positioning cap, can while the free end of worm screw rotating shaft be supported, can not because of the concentricity between rotating shaft free end and positioning cap, the lateral force extra to worm screw rotating shaft output to positioning cap.

The utility model solves the technological scheme that its technical problem adopts: a kind of linear actuators rotating shaft guiding positioning cap, comprise locking cap and axle sleeve, in locking cap, there is ball-and-socket, axle sleeve is bulb type axle sleeve, axle sleeve is arranged in ball-and-socket, has at the top of locking cap the hole for injecting glue injecting fixing glue in ball-and-socket.

Further restriction, the top of axle sleeve has multiple projection or pit.

Further restriction, the top of locking cap has cross recess.

The beneficial effects of the utility model are: the axle sleeve of this rotating shaft guiding positioning cap can carry out translational adjustment and rotate regulating in the ball-and-socket of locking cap, to adapt to translation error between rotating shaft free end and positioning cap and axial skewed error, prevent the lateral force that positioning cap is extra to worm screw rotating shaft output, rotating shaft can better be run.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further illustrated;

Fig. 1 is the structural representation of locking cap of the present utility model;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the structural representation of axle sleeve of the present utility model;

Fig. 4 is the B-B sectional view of Fig. 3;

Fig. 5 is the mounting structure schematic diagram of rotating shaft of the present utility model guiding positioning cap;

Fig. 6 is the A place enlarged view of Fig. 5;

In figure, 1. locking cap, 2. axle sleeve, 3. hole for injecting glue, 4. projection, 5. cross recess, 6. motor, 7. casing, 8. lid, 9. rotating shaft, 10. screw, 11. fixing glue.

Embodiment

As Fig. 1,2, shown in 3 and 4, a kind of linear actuators rotating shaft guiding positioning cap, comprises locking cap 1 and axle sleeve 2, in locking cap 1, there is ball-and-socket, axle sleeve 2 is bulb type axle sleeve, and axle sleeve 2 is arranged in ball-and-socket, has the hole for injecting glue 3 injecting fixing glue 11 in ball-and-socket at the top of locking cap 1.

The top of axle sleeve 2 has multiple projection 4.

The top of locking cap 1 has cross recess 5, can directly be twisted by cross instrument like this.

As illustrated in Figures 5 and 6, a kind of this has the linear actuators that positioning cap is guided in rotating shaft, comprise motor 6, casing 7, lid 8, rotating shaft 9 and rotating shaft of the present utility model guiding positioning cap, motor 6 is arranged on casing 7, lid 8 is assembled on casing 7 by screw 10, lid 8 has installation screw, locking cap 1 is arranged in installation screw, the free end of rotating shaft 9 stretches in the axle sleeve 2 of rotating shaft guiding positioning cap, axle sleeve 2 is followed the bearing of trend auto-translating of the free end of rotating shaft 9 and is rotated adjustment, make axle sleeve 2 concentric with rotating shaft 9, in ball-and-socket, fixing glue 11 is injected by the hole for injecting glue 3 at the top of locking cap 1, fill the gap between axle sleeve 2 and locking cap 1, countershaft 9 is formed effective support after solidifying by the fixing glue 11 injected.When lid 8 is disassembled or changes, axle sleeve 2 and the concentricity generation deviation of the free end of rotating shaft 9 may be caused, now only locking cap 1 need be backed out replacing together with the axle sleeve 2 of inside, scrapping of lid 8 can not be caused.In the utility model, preferably adopt the mode be threaded into be fixed on lid 8 by locking cap 1, alternate manner also can be adopted to be fixed, such as, clamp with back-off, be screwed.

Claims (3)

1. a linear actuators rotating shaft guiding positioning cap, comprise locking cap (1) and axle sleeve (2), it is characterized in that: in described locking cap (1), there is ball-and-socket, axle sleeve (2) is bulb type axle sleeve, axle sleeve (2) is arranged in ball-and-socket, has the hole for injecting glue (3) injecting fixing glue (11) in ball-and-socket at the top of locking cap (1).

2. linear actuators rotating shaft guiding positioning cap according to claim 1, is characterized in that: the top of described axle sleeve (2) has multiple projection (4) or pit.

3. linear actuators rotating shaft guiding positioning cap according to claim 1, is characterized in that: the top of described locking cap (1) has cross recess (5).