Disclosure of Invention
Therefore, it is necessary to provide an industrial cabinet and a door connecting hinge device thereof, which can facilitate the opening and closing of the cabinet door, aiming at the problem of inconvenient opening and closing of the cabinet door of the existing industrial cabinet.
A connecting door hinge assembly comprising:
the connecting seat is provided with two mutually spaced supporting point positions;
the driving arm is provided with a first rotating installation point and a second rotating installation point which are mutually spaced at one end, and is provided with a third rotating installation point at the other end, a connecting line among the first rotating installation point, the second rotating installation point and the third rotating installation point is triangular, and the first rotating installation point is rotatably connected with one of the supporting points;
the two ends of the auxiliary arm are respectively provided with a fourth rotation mounting point position and a fifth rotation mounting point position, and the fourth rotation mounting point position is rotatably connected with the other supporting point position; and
and the two ends of the prepressing telescopic piece are respectively provided with a sixth rotating installation point position and a seventh rotating installation point position, and the sixth rotating installation point position is rotatably connected with the second rotating installation point position.
In one embodiment, the connecting seat is provided with a plurality of first bar-shaped mounting holes, and each first bar-shaped mounting hole extends along a connecting line between the two supporting points.
In one embodiment, the middle of the auxiliary arm is bent to make the auxiliary arm in an L shape.
In one embodiment, a linear distance between the first rotational mounting point and the third rotational mounting point is equal to a linear distance between the fourth rotational mounting point and the fifth rotational mounting point.
In one embodiment, the first rotation mounting point and the supporting point, the fourth rotation mounting point and the supporting point, and the sixth rotation mounting point and the second rotation mounting point are rotatably connected through pin assemblies.
In one embodiment, the pin assembly includes a pin, a resin sleeve disposed on the pin, and a resin gasket disposed on the pin and clamped at two ends of the resin sleeve.
In one embodiment, the pre-stressed expansion member is an air spring.
In one embodiment, the adjusting device further comprises an adjusting seat, a plurality of second strip-shaped mounting holes are formed in the adjusting seat, and the seventh rotating mounting point is rotatably arranged on the adjusting seat.
In one embodiment, the adjusting base further comprises an adjusting bolt, the adjusting base is further provided with an adjusting screw hole which has the same extending direction as the second strip-shaped mounting hole, and the adjusting bolt is arranged in the adjusting screw hole in a penetrating manner and is screwed with the adjusting screw hole.
An industrial cabinet comprising:
a cabinet body;
a cabinet door; and
in the door hinge device according to any of the above preferred embodiments, the connecting seat is fixed to an inner wall of the cabinet body, the seventh rotation mounting point is rotatably disposed in the cabinet body, and the third rotation mounting point and the fifth rotation mounting point are respectively rotatably connected to the cabinet door.
According to the industrial cabinet and the door hinge connecting device thereof, the driving arm is equivalent to a lever, and the driving arm can be driven to rotate when the cabinet door slides upwards or downwards. The pre-pressing telescopic piece applies a moment to the driving arm so that the driving arm has a tendency of rotating. When the cabinet door is closed, the driving arm and the auxiliary arm droop, and the moment of the pre-pressing telescopic piece enables the driving arm to have the trend of further closing the cabinet door, so that the cabinet door is tightly pressed on the cabinet body in a gravity fit mode. When the cabinet door is opened, the cabinet door is firstly upwards slid and the driving arm and the auxiliary arm are driven to upwards overturn until the moment of the prepressing telescopic piece is reversed. At the moment, the moment of the pre-pressing telescopic piece enables the driving arm to have the tendency of opening the cabinet door, so that the moment of the pre-pressing telescopic piece can offset at least part of the moment of gravity and the moment of friction force. Therefore, the cabinet door can be operated to be opened or closed continuously only by applying smaller acting force to the cabinet door, so that the operation is convenient.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 and 2, an industrial cabinet 10 and a door hinge device 100 are provided. The industrial cabinet 10 includes a cabinet body 11, a cabinet door 12, and a door hinge device 100.
The industrial cabinet 10 is generally used to house industrial production equipment, such as 3D printers. The cabinet 11 may be rectangular, and has a receiving cavity therein. The cabinet door 12 is used to open or close the receiving cavity. For ease of operation, the door 12 is typically provided with a handle. Specifically, the cabinet body 11 and the cabinet door 12 are generally of a sheet metal structure and have high mechanical strength.
The door hinge device 100 is used for connecting the cabinet door 12 and the cabinet body 11, and the door hinge device 100 can enable the cabinet door 12 to be closed or opened in a turning and translation mode. Wherein each cabinet door 12 generally corresponds to two connecting door hinge devices 100.
Referring to fig. 3, the door hinge device 100 according to the preferred embodiment of the present invention includes a connecting base 110, a driving arm 120, an auxiliary arm 130, and a pre-pressing expansion member 140.
The connecting base 110 is used for supporting, and two supporting points (not shown) are disposed on the connecting base 110 and spaced from each other. The supporting point may be a screw hole or a through hole formed on the connecting seat 110, so as to facilitate the rotation connection. Specifically, in the present embodiment, the connecting seat 110 is made of a metal plate, a protruding portion is formed in the middle of the connecting seat, and two folded edges are formed on two sides of the connecting seat. Furthermore, the protruding portion is further provided with two threaded holes, and the two threaded holes are used as the two supporting point positions.
One end of the active arm 120 is provided with a first rotational mounting point (not shown) and a second rotational mounting point (not shown). Moreover, the first rotational mounting point and the second rotational mounting point are spaced apart from one another. The other end of the active arm 120 is provided with a third rotational mounting point (not shown). The connecting line among the first rotation mounting point position, the second rotation mounting point position and the third rotation mounting point position is triangular, and the first rotation mounting point position is rotatably connected with one of the supporting point positions.
Specifically, the active arm 120 is generally a rigid strip structure. Furthermore, the driving arm 120 has a wider end, and the wider end is provided with a first rotation mounting point and a second rotation mounting point. Therefore, the driving arm 120 forms a lever structure on the connecting seat 120, and a force is applied to the second pivot mounting point to rotate the driving arm 120 relative to the connecting seat 110. The first rotation mounting point, the second rotation mounting point and the third rotation mounting point can be screw holes or through holes.
The auxiliary arm 130 may be the same material and shape as the main arm 120. The auxiliary arm 130 has a fourth rotation mounting point (not shown) and a fifth rotation mounting point (not shown) at two ends thereof. The fourth rotational mounting point and the fifth rotational mounting point may also be screw holes or through holes. Further, the fourth rotational mounting point is rotatably connected to the other support point.
The pre-stressed extension member 140 can extend along its length and can be pre-stressed during installation to generate a pre-stress force. The two ends of the pre-pressing expansion piece 140 are respectively provided with a sixth rotation mounting point (not shown) and a seventh rotation mounting point (not shown). The sixth rotational mounting point location is rotationally coupled to the second rotational mounting point location. Therefore, when the pre-pressing expansion piece 140 expands and contracts, the driving arm 120 can be driven to rotate.
In this embodiment, the pre-pressure expansion member 140 is a gas spring. When the connecting door hinge device 100 is installed in the industrial cabinet 10, the gas spring is in a pre-compressed state, so that it exerts a holding force on the active arm 120. The air spring has the advantages of stable expansion, low noise and the like.
It should be noted that in other embodiments, the pre-compression expansion member 140 may also be other elastic expansion devices such as a hydraulic rod.
In the industrial cabinet 10, the connecting base 110 is fixed on the inner wall of the cabinet body 11, and the seventh rotation mounting point of the pre-pressing expansion piece 140 is rotatably disposed in the cabinet body 11. At this time, the pre-compression expansion member 140 is in a pre-compression state, and applies a rotational torque to the active arm 120. The third rotational mounting point of the active arm 120 and the fifth rotational mounting point of the auxiliary arm 130 are rotatably connected to the cabinet door 12, respectively.
For convenience of description, reference will be made below to the case where the cabinet 11 is placed in a horizontal plane:
when the connecting door hinge device 100 is assembled in the industrial cabinet 10, a line connecting two support points of the connecting socket 110 extends in a vertical direction, and the driving arm 120 is located below the auxiliary arm 130. Further, by adjusting the installation height of the connection seat 110 in the cabinet 11, when the cabinet door 12 closes the cabinet 11, the pre-pressing expansion piece 140 applies a rotation moment to the active arm 120 so that the active arm 120 has a tendency to continuously turn downward. Therefore, if the cabinet door 12 is to be opened, the gravity of the cabinet door 12 itself and the moment of pre-pressing the expansion member 140 need to be overcome, so that the cabinet door 12 and the cabinet body 11 are tightly pressed, and the sealing performance of the cabinet body 12 is higher.
The direction of the force applied to the active boom 120 by the pre-stressed elastic member 140 is constant. Therefore, when the driving arm 120 is turned upwards by an external force, the rotation torque of the pre-pressing expansion piece 140 to the driving arm 120 is reversed, so that the driving arm 120 has a tendency to continue to turn upwards. By adjusting the pre-compression amount of the pre-compression expansion member 140, the rotation moment applied by the pre-compression expansion member 140 to the driving arm 120 and the moment of the gravity of the cabinet door 12 can be offset, so that the cabinet door 12 is kept balanced. At this time, the operator can operate the cabinet door 12 to slide upward or downward with a small force.
When opening the cabinet door 12, the operator first slides the cabinet door 12 upward and drives the driving arm 120 and the auxiliary arm 130 to turn upward. When the driving arm 120 rotates to a position where the connecting line of the first rotational mounting point and the second rotational mounting point is parallel to the direction of the acting force of the pre-pressing expansion piece 140, the rotational torque of the pre-pressing expansion piece 140 is reversed. At this time, the moment of the pre-pressing expansion piece 140 makes the active boom 120 have a tendency of turning upwards, so the moment of the pre-pressing expansion piece 140 can counteract at least part of the moment of the weight of the cabinet door 12. Therefore, the cabinet door 12 can be operated to be continuously opened or closed only by applying smaller acting force to the cabinet door 12, so that the operation is convenient.
The process of assembling and debugging the door hinge device 100 is as follows:
firstly, rotatably connecting the third mounting point of the driving arm 120 and the fifth mounting point of the auxiliary arm 130 with the cabinet door 12 respectively, and enabling the rotation to be smooth;
secondly, the connecting seat 110 is disposed on the inner wall of the cabinet 11 and pre-fixed, and the cabinet door 12 is pressed with force, so that the cabinet door 12 is attached to the cabinet 11. At this time, according to the above requirement (i.e., the moment of pre-pressing the telescopic member 140 makes the driving arm 120 have a tendency of continuously turning downward to compress the cabinet door 12), the installation position of the connecting seat 110 is determined by adjustment, and the connecting seat 110 is fixed on the inner wall of the cabinet body 11;
thirdly, detaching the cabinet door 12 from the active arm 120 and the auxiliary arm 130, turning the active arm 120 and the auxiliary arm 130 upwards to the highest open state, pre-fixing a seventh rotation mounting point of the pre-pressing expansion piece 140 on the inner wall of the cabinet body 11, and pre-pressing the pre-pressing expansion piece 140;
and fourthly, mounting the cabinet door 12 again. At this time, the active arm 120 tends to turn downward under the gravity of the cabinet door 12. If the moment of pre-stressing the telescopic element 140 is not sufficient to counteract the moment of gravity of the cabinet door 12, the cabinet door 12 will move downwards. Further, the position of the seventh rotation mounting point position is finely adjusted to increase the pre-compression amount of the pre-compression expansion member 140, until the moment of the pre-compression expansion member 140 offsets the gravity moment, the cabinet door 12 is supported in the highest opening state, and finally the seventh rotation mounting point position of the pre-compression expansion member 140 is located.
In order to facilitate adjustment of the mounting position of the connection seat 110, in this embodiment, the connection seat 110 is provided with a plurality of first bar-shaped mounting holes 111, and each first bar-shaped mounting hole 111 extends along a connection line between two support points. In addition, the inner wall of the cabinet 11 is provided with a plurality of studs. The connecting base 110 is fixed by the first strip-shaped mounting hole 111 and the nut and the stud in a matching way.
When the connecting seat 110 is installed, the first bar-shaped mounting hole 111 is firstly sleeved on the stud, and then the cabinet door 12 is pressed, so that the cabinet door 12 is attached to the cabinet body 11. At this time, the stud may slide in the first bar-shaped mounting hole 111 until the connection seat 110 is adjusted to a proper position. Finally, the nut and the stud are locked, so that the connecting seat 110 can be fixed.
Since the stud is engaged with the first bar-shaped mounting hole 111 to pre-fix the connecting socket 110, the mounting position of the connecting socket 110 can be conveniently adjusted.
To facilitate adjustment of the pre-compression amount of the pre-compression expansion member 140, in this embodiment, the door hinge device 100 further includes an adjustment seat 150. A plurality of second strip-shaped mounting holes 151 are formed in the adjusting seat 150, and the seventh rotating mounting point is rotatably arranged on the adjusting seat 150.
Specifically, the adjusting seat 150 is fixed by matching the second strip-shaped mounting hole 151 with a nut and a stud on the inner wall of the cabinet body 11. Therefore, one end of the pre-compression expansion member 140 is mounted inside the cabinet 11 through the adjustment seat 150.
When the adjustment seat 150 is installed, the second bar-shaped installation hole 151 extends in the horizontal direction. By driving the second bar-shaped mounting hole 151 and the stud to slide with each other, the pre-compression amount of the pre-compression expansion member 140 can be adjusted to a desired range. Finally, the nut and the stud are locked, so that the adjusting seat 150 can be fixed.
Further, in this embodiment, the adjusting base 150 further includes an adjusting bolt 153, the adjusting base 150 is further provided with an adjusting screw hole (not shown) having the same extending direction as the second strip-shaped mounting hole 151, and the adjusting bolt 153 is inserted into the adjusting screw hole and screwed with the adjusting screw hole. Of these, the number of the adjusting bolts 153 is generally two.
In addition, a mounting block 13 is disposed inside the cabinet 11, a mounting screw hole (not shown) is disposed at a position of the mounting block 13 corresponding to the adjusting screw hole, and a distal end of the adjusting bolt 153 passes through the adjusting screw hole and is screwed with the mounting screw hole. When the adjusting bolt 153 is screwed, the adjusting bolt 153 can be screwed into or out of the mounting screw hole, so that the adjusting seat 150 can be driven to slide. Therefore, by operating the adjusting bolt 153, it is possible to further facilitate the adjustment of the pre-compression amount of the pre-compression expansion member 140.
In the present embodiment, the middle portion of the auxiliary arm 130 is bent such that the auxiliary arm 130 has an L-shape. Therefore, the auxiliary arm 130 can form a clearance with the edge of the cabinet 11, and will not interfere with the edge of the cabinet 11 during the upward sliding process of the cabinet door 12, so as to facilitate the cabinet door 12 to rise to the maximum height.
In this embodiment, the linear distance between the first rotational mounting point and the third rotational mounting point is equal to the linear distance between the fourth rotational mounting point and the fifth rotational mounting point. Further, when the connecting door hinge device 100 is installed in the industrial cabinet 10, a linear distance between the two supporting points is equal to a linear distance between the third installation point and the fifth installation point.
That is, a parallelogram linkage mechanism is formed among the connecting seat 110, the driving arm 120, the auxiliary arm 130 and the cabinet door 12. According to the parallelogram linkage principle, the cabinet door 12 can move upwards or downwards in parallel in the opening and closing processes.
Referring to fig. 4, in the present embodiment, the first rotation mounting point and the supporting point, the fourth rotation mounting point and the supporting point, and the sixth rotation mounting point and the second rotation mounting point are rotatably connected by a pin assembly 160.
In addition, the third rotational mounting point and the fifth rotational mounting point may also be rotatably connected to the cabinet door 12 via the pin assembly 160. Therefore, the supporting point, the first rotational mounting point, the second rotational mounting point, the third rotational mounting point, the fourth rotational mounting point and the fifth rotational mounting point are all provided with through holes or screw holes, and the pin shaft assembly 160 is matched with the through holes or screw holes to realize the rotatable connection.
Further, in the present embodiment, the pin assembly 160 includes a pin 161, a resin bushing 163 and a resin gasket 165. Wherein, the resin bushing 163 is sleeved on the pin 161. The number of the resin spacers 165 is at least two, and the resin spacers 165 are sleeved on the pin 161 and clamped at two ends of the resin sleeve 163. The pin 161 is inserted into a through hole or a screw hole of each point position to serve as a rotation shaft.
The pin 161 is generally a metal member, and the resin sleeve 163 effectively prevents the pin 161 from directly contacting the wall of the through hole or the screw hole, thereby providing a buffering function. Therefore, the pin assembly 160 can effectively prevent damage caused by mutual friction between metal parts, thereby improving the service life of the door hinge device 100.
In the industrial cabinet 10 and the door hinge device 100 connected thereto, the active arm 120 is equivalent to a lever, and the door 12 slides upwards or downwards to drive the active arm 120 to rotate. The pre-stressed expansion piece 140 applies a moment to the active boom 120 so that the active boom 120 has a tendency to rotate. When the cabinet door is closed, the driving arm 120 and the auxiliary arm 130 droop, and the moment of the pre-pressing expansion piece 140 enables the driving arm 120 to have a tendency of further closing the cabinet door 12, so that the cabinet door 12 is pressed against the cabinet body 11 in cooperation with gravity. When the cabinet door 12 is opened, the cabinet door 12 is first slid upward and drives the active arm 120 and the auxiliary arm 130 to turn upward until the torque of the pre-pressing expansion member 140 is reversed. At this time, the moment of the pre-pressing expansion element 140 makes the driving arm 120 have a tendency to open the cabinet door 12, so the moment of the pre-pressing expansion element 140 can counteract at least part of the moment of gravity and the moment of friction. Therefore, the cabinet door 12 can be operated to be continuously opened or closed only by applying smaller acting force to the cabinet door 12, so that the operation is convenient.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.