CN210958030U

CN210958030U - Electric push rod with power-off hand-operated device

Info

Publication number: CN210958030U
Application number: CN201922203234.7U
Authority: CN
Inventors: 林国
Original assignee: Ningbo Litop Motion Co ltd
Current assignee: Ningbo Litop Motion Co ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-07-07
Anticipated expiration: 2029-12-10

Abstract

The utility model discloses an electric push rod from taking outage hand cranking device, including casing, guide pin bushing, motor, screw rod, slide and push rod, the guide pin bushing is fixed to be set up in the casing front end, the motor is fixed to be set up in the casing lower extreme, the screw rod rotates to set up in the guide pin bushing, slide threaded connection is in on the screw rod, and the slide slides and sets up in the guide pin bushing, the push rod is fixed to be set up in on the slide; the motor drives the screw rod to rotate and drives the push rod to do linear reciprocating motion through the sliding seat; the electric push rod also comprises a hand-operated device, and the rear end of the screw rod is concentrically provided with a manual connecting shaft; the hand cranking device comprises a rotating shaft, a head wrench, a folding handle, a limiting disc and a spring. Has the advantages of convenient operation and compact structure.

Description

Electric push rod with power-off hand-operated device

Technical Field

The utility model relates to a mechanical parts field, concretely relates to electric putter.

Background

The electric push rod is also called a linear driver, is a novel linear actuating mechanism mainly composed of a motor push rod, a control device and other mechanisms, and can be considered as an extension of a rotating motor in the aspect of structure. The electric push rod is an electric driving device which converts the rotary motion of a motor into the linear reciprocating motion of the push rod. The device can be used as an execution machine in various simple or complex process flows to realize remote control, centralized control or automatic control. The motion driving unit is widely used in the industries of household appliances, kitchen ware, medical appliances, automobiles and the like.

The electric push rod of part worm gear structure and gear structure can install hand play axle, under the circumstances of outage, just can reach the effect that lets the push rod adjusting position through hand after connecing hand spanner. However, the existing hand-cranking device needs additional configuration, has larger volume and is inconvenient to carry.

Therefore, it is an urgent need for those skilled in the art to improve the conventional electric push rod to overcome the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pair of convenient operation, compact structure's electric putter from taking outage hand cranking device.

In order to achieve the above purpose, the utility model adopts the technical scheme that: an electric push rod with a power-off hand-operated device comprises a shell, a guide sleeve, a motor, a screw, a sliding seat and a push rod, wherein the guide sleeve is fixedly arranged at the front end of the shell; the motor drives the screw rod to rotate and drives the push rod to do linear reciprocating motion through the sliding seat; the method is characterized in that:

the electric push rod also comprises a hand-operated device, and the rear end of the screw rod is concentrically provided with a manual connecting shaft; the hand-operated device comprises a rotating shaft, a head spanner, a folding handle, a limiting disc and a spring, wherein the rotating shaft is rotatably arranged at the rear end of the shell, the head spanner is fixedly arranged at the front end of the rotating shaft, the folding handle is fixedly arranged at the rear end of the rotating shaft and is suitable for rotating the rotating shaft, the limiting disc is fixedly arranged on the rotating shaft and is positioned at the inner side of the shell, the limiting disc limits the hand-operated device to be separated from the shell, and the spring is arranged between the hand-operated device and the shell and forces the hand-operated device to slide towards the rear side;

the head wrench and the manual connecting shaft are separated when the hand-cranking device is in an initial state; the head wrench and the manual connecting shaft can be combined by pressing the hand cranking device forwards and overcoming the elasticity of the spring, so that the screw and the hand cranking device can rotate synchronously.

Preferably, the folding handle comprises a fixed handle, a telescopic handle and a hinged handle, the fixed handle is fixedly arranged at the rear end of the rotating shaft, the telescopic handle is slidably arranged on the fixed handle, the telescopic handle can be fixed on the fixed handle, the hinged handle is hinged at the lower end of the telescopic handle, the hinged handle can be turned over between zero and ninety degrees relative to the telescopic handle, and the hinged handle can be fixed at zero and ninety degrees. After the folding handle is folded according to the structure, the folding handle has compact structure when not in use and does not occupy too much space.

Preferably, the telescopic handle is sleeved outside the fixed handle, a penetrating mounting hole is formed in the lower end of the fixed handle, an elastic clamping bead is arranged in the mounting hole, a plurality of clamping holes are formed in the two sides of the telescopic handle along the length direction, and the elastic clamping bead can enter the clamping holes to fix the telescopic handle on the fixed handle. The telescopic fixing mode is simple, reliable and convenient to operate.

As an improvement, a holding sleeve is further sleeved outside the hinge handle, and the holding sleeve is rotatably arranged on the hinge handle. The holding sleeve is used for shaking hands, so that an operator can rotate the hand-cranking device more conveniently.

As an improvement, a rotating column extends out of the rear end of the rotating shaft, and a rotating disc is rotatably arranged on the rotating column. The rotating disc is suitable for being pressed by hands, so that the head wrench is combined with the manual connecting shaft; when the screw rod needs to be manually rotated, one hand is used for continuously pressing the rotary disc to enable the head wrench and the manual connecting shaft to be kept combined, the other hand is used for rotating the folding handle to enable the screw rod to rotate, and the rotary disc and the hand pressing the rotary disc are always kept still in the rotating process; the structure enables the operation of the hand-operated device to be more convenient and the rotation to be more reliable.

As an improvement, a rotating bearing is arranged on the machine shell, and the rotating shaft is arranged on the rotating bearing. The structure of the device is more reasonable and reliable.

Preferably, the manual connecting shaft is a hexagonal convex column, and the head wrench is an inner hexagonal sleeve. The above structure is a commonly used linkage structure.

Compared with the prior art, the utility model has the advantages of it is following: this scheme sets up the hand cranking device integration on electric putter, has saved the trouble of additionally carrying hand cranking device. The hand-operated device has a clutch function, is in a separated state when not in use, and cannot influence the normal work of the electric push rod; when the power is off, the hand-operated device can be pressed to a combined state, and the hand-operated device is rotated to manually adjust the electric push rod; after the adjustment is finished, the hand-operated device can automatically return to the separation state; has the advantages of simple operation and reliable use. In addition, the folding design of the folding handle does not occupy too much space, so that the electric push rod keeps a compact structure.

Drawings

Fig. 1 is a schematic perspective view of a preferred embodiment of the present invention;

fig. 2 is a half sectional view of a separated state according to a preferred embodiment of the present invention;

fig. 3 is a half sectional view of a united state according to a preferred embodiment of the present invention;

fig. 4 is an exploded view of a preferred embodiment according to the present invention;

fig. 5 is a schematic perspective view of a hand cranking device according to a preferred embodiment of the present invention;

fig. 6 is a half sectional view of a hand cranking device in accordance with a preferred embodiment of the present invention;

fig. 7 is an exploded view of a hand crank in accordance with a preferred embodiment of the present invention;

fig. 8 is a perspective view of the hand cranking device in the unfolded state according to the preferred embodiment of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

In the description of the present invention, it should be noted that, for the orientation words, if there are terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and only for the convenience of describing the present invention and simplifying the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and not be construed as limiting the specific scope of the present invention.

As shown in fig. 1 to 8, a preferred embodiment of the present invention includes a casing 1, a guide sleeve 2, a motor 3, a screw rod 4, a sliding seat 5 and a push rod 6, wherein the guide sleeve 2 is fixedly disposed at the front end of the casing 1, the motor 3 is fixedly disposed at the lower end of the casing 1, the screw rod 4 is rotatably disposed in the guide sleeve 2, the sliding seat 5 is connected to the screw rod 4 by a thread, the sliding seat 5 is slidably disposed in the guide sleeve 2, and the push rod 6 is fixedly disposed on the sliding seat 5; the motor 3 drives the screw rod 4 to rotate and drives the push rod 6 to do linear reciprocating motion through the sliding seat 5.

The key point is that the electric push rod also comprises a hand-operated device 7, and the rear end of the screw rod 4 is concentrically provided with a manual connecting shaft 41; hand cranking device 7 includes pivot 71, head spanner 72, folding handle 73, spacing dish 74 and spring 75, pivot 71 rotates and sets up in casing 1 rear end, head spanner 72 fixes and sets up in pivot 71 front end, folding handle 73 fixes and sets up in pivot 71 rear end, folding handle 73 is suitable for and rotates pivot 71, spacing dish 74 is fixed to be set up on pivot 71 and is located the casing 1 inboard, spacing dish 74 restriction hand cranking device 7 breaks away from the casing, spring 75 sets up between hand cranking device 7 and casing 1, and force hand cranking device 7 to the rear side slip.

The working principle is as follows: when the hand-operated device 7 is in an initial state, the head wrench 72 is separated from the manual connecting shaft 41; by pressing the hand crank 7 forward and against the force of the spring 75, the head wrench 72 and the hand coupling 41 are coupled to achieve synchronous rotation of the screw 4 and the hand crank 7.

The folding handle 73 comprises a fixed handle 731, a telescopic handle 732 and a hinge handle 733, the fixed handle 731 is fixedly arranged at the rear end of the rotating shaft 71, the telescopic handle 732 is slidably arranged on the fixed handle 731, the telescopic handle 732 can be fixed on the fixed handle 731, the hinge handle 733 is hinged at the lower end of the telescopic handle 732, the hinge handle 733 can be turned over between zero and ninety degrees relative to the telescopic handle 732, and the hinge handle 733 can be fixed at zero and ninety degrees. The telescopic handle 732 is sleeved outside the fixing handle 731, a through mounting hole 7311 is formed at the lower end of the fixing handle 731, an elastic locking bead 735 is arranged in the mounting hole 7311, a plurality of locking holes 7321 are formed at both sides of the telescopic handle 732 along the length direction, and the elastic locking bead 735 can enter the locking holes, so that the telescopic handle 732 is fixed on the fixing handle 731. In this embodiment, a holding sleeve 734 is further sleeved outside the hinge handle 733, and the holding sleeve 734 is rotatably disposed on the hinge handle 733.

In order to facilitate rotation while pressing, a rotation post 76 extends from the rear end of the rotation shaft 71, and a rotation disc 77 is rotatably disposed on the rotation post 76.

In this embodiment, the housing 1 is provided with a rotary bearing 11, and the rotating shaft 71 is provided on the rotary bearing 11. The manual connecting shaft 41 is a hexagonal convex column, and the head wrench 72 is an inner hexagonal sleeve.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An electric push rod with a power-off hand-operated device comprises a shell, a guide sleeve, a motor, a screw, a sliding seat and a push rod, wherein the guide sleeve is fixedly arranged at the front end of the shell; the motor drives the screw rod to rotate and drives the push rod to do linear reciprocating motion through the sliding seat; the method is characterized in that:

2. The electric putter of claim 1 with power off hand cranking device is characterized in that: folding handle includes fixed handle, flexible handle and articulated handle, fixed handle fixed set up in the pivot rear end, flexible handle slide set up in on the fixed handle, just flexible handle can be fixed on the fixed handle, articulated handle articulate in flexible handle lower extreme, the articulated handle can be relative flexible handle is overturn between zero to ninety degrees, just the articulated handle can be fixed when zero degree and ninety degrees.

3. The electric putter of claim 2 with power off hand cranking device is characterized in that: the telescopic handle is sleeved outside the fixed handle, a penetrating mounting hole is formed in the lower end of the fixed handle, an elastic clamping bead is arranged in the mounting hole, a plurality of clamping holes are formed in the two sides of the telescopic handle along the length direction, and the elastic clamping bead can enter the clamping holes to fix the telescopic handle on the fixed handle.

4. The electric putter of claim 3 with hand cranking device that cuts off power supply, characterized in that: the outer portion of the hinge handle is further sleeved with a holding sleeve, and the holding sleeve is rotatably arranged on the hinge handle.

5. The electric putter of claim 1 with power off hand cranking device is characterized in that: the rear end of the rotating shaft also extends out of the rotating column, and the rotating column is rotatably provided with a rotating disc.

6. An electric putter with self-powered hand crank according to any of claims 1 to 5 wherein: the shell is provided with a rotating bearing, and the rotating shaft is arranged on the rotating bearing.

7. An electric putter with self-powered hand crank according to any of claims 1 to 5 wherein: the manual connecting shaft is a hexagonal convex column, and the head wrench is an inner hexagonal sleeve.