CN213869435U - Four-bar linkage structure of sliding door - Google Patents

Abstract

The utility model discloses a sliding door four-bar linkage structure, which comprises a sliding door, a supporting structure, a swing arm component and a part, wherein one side of the supporting structure is provided with an opening, the swing arm component comprises at least two swing arms, one end of each swing arm is hinged with the supporting structure, and the other end is hinged with the sliding door, so that the sliding door can move relative to the supporting structure to open or close the opening; the first end of a part is connected with the supporting structure, the second end of the part is connected with one of the swing arms, and the part is used for driving the sliding door to be close to or far away from the supporting structure. The operator follows the direction pulling sliding door that opens, reachs preset position, looses the sliding door this moment, and this part can drive the swing arm and continue the swing to drive the sliding door and open. Therefore, the labor intensity of operators is reduced, and the safety is improved. The swing arm assembly comprises at least two swing arms to determine the motion track of the sliding door, so that the sliding door can be opened or closed according to a preset direction. The thrust bearing is used for realizing rotary connection, so that the structure is more stable due to the reduction of abrasion.

Description

Four-bar linkage structure of sliding door

Technical Field

The utility model relates to an equipment emergency exit field especially relates to a sliding door four-bar linkage based on thrust bearing realizes rotating the connection.

Background

Sliding doors are often provided on machining equipment to allow access to the articles and to allow inspection during machining. However, in the prior art, the sliding door is usually opened and closed manually by an operator, and because the opening and closing angles are not uniform, the sliding door is very easy to open and close and cannot be positioned, so that safety hazards are formed, the safety is poor, and the labor intensity of the operator is high.

Therefore, there is a need to provide a new sliding door four-bar linkage structure to solve the above-mentioned technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sliding door four-bar linkage structure aims at solving current sliding door security poor, and operator's intensity of labour is big problem moreover.

In order to achieve the above object, the present invention provides a sliding door four-bar linkage structure, including a sliding door, a supporting structure, a swing arm assembly and a component, wherein one side of the supporting structure forms an opening, the swing arm assembly includes a first thrust bearing, a second thrust bearing and at least two swing arms, one end of each swing arm is rotatably connected to the supporting structure through the first thrust bearing, and the other end is rotatably connected to the sliding door through the second thrust bearing, so that the sliding door can move relative to the supporting structure to open or close the opening; the first end of the part is connected with the supporting structure, the second end of the part is connected with one of the swing arms, and the part is used for driving the sliding door to be close to or far away from the supporting structure.

The swing arm with bearing structure passes through the fixing base and connects, swing arm with the centre gripping has a thrust bearing between the bearing structure, a thrust bearing cover is located on the fixing base.

Preferably, the fixed seat comprises a bearing retainer ring and a rotating shaft which are connected, and the first thrust bearing is sleeved on the rotating shaft; the pivot is worn to locate the swing arm, the pivot is kept away from the one end of retaining ring with bearing structure connects, the swing arm with between the retaining ring and the swing arm with all the centre gripping has between the bearing structure first thrust bearing.

Preferably, the sliding door four-bar linkage structure further comprises a fixed retainer ring, a connecting plate is arranged on the sliding door, the connecting plate extends from the sliding door to the direction close to the supporting structure, the swing arm, the connecting plate and the fixed retainer ring are connected through a fastener, second thrust bearings are clamped between the sliding door and the swing arm and between the sliding door and the fixed retainer ring, and the second thrust bearings are sleeved on the fastener.

Preferably, the sliding door includes door frame and door plant, the swing arm with the door frame is connected, the door plant is located the door frame deviates from one side of swing arm, the connecting plate is located the door frame deviates from one side of door plant.

Preferably, the member is an elastic member.

Preferably, the elastic component is a nitrogen spring, a first spring retaining sleeve is arranged on the supporting structure, a second spring retaining sleeve is arranged on the swing arm, the cylinder body of the elastic component is hinged to the first spring retaining sleeve, and the piston rod of the elastic component is hinged to the second spring retaining sleeve.

Preferably, the support structure is a support frame formed by integral casting, a working chamber is formed in the support frame, and the working chamber is communicated with the outside through the opening.

Preferably, each swing arm is arranged at intervals along the height direction of the supporting structure, the number of the elastic pieces is multiple, and the elastic pieces and the swing arms are consistent in number and are arranged in one-to-one correspondence.

Preferably, the number of the swing arm assemblies is two, the two sets of the swing arm assemblies are respectively arranged on two opposite sides of the supporting structure, and the elastic pieces are consistent with the number of the swing arm assemblies and are arranged in a one-to-one correspondence manner.

The utility model discloses among the technical scheme, the operator pulling sliding door reachs the maximum tensile length of elastic component, loosens the sliding door this moment, and this part can drive the swing arm and continue the swing to drive the sliding door and open or close the opening. Therefore, the door body is ensured to be opened and closed in place every time, potential safety hazards are avoided, the safety is improved, and the labor intensity of operators is reduced. And the swing arm assembly comprises at least two swing arms so as to determine the motion track of the sliding door and improve the stability of the opening and closing motion of the sliding door. And in the swing process of the swing arm, only the balls in the first thrust bearing and the second reasoning bearing rotate, the position deviation caused by the increase of the fit clearance caused by abrasion is reduced, and the structure is more stable in the long-term use process.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic view of a four-bar linkage structure of a sliding door according to an embodiment of the present invention;

fig. 2 is a schematic structural view of another state of the four-bar linkage structure of the sliding door according to an embodiment of the present invention;

FIG. 3 is a schematic view of a connection structure of the swing arm and the support structure in the embodiment of the present invention;

fig. 4 is a schematic view of the connection structure of the swing arm and the sliding door in the embodiment of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Four-bar linkage structure of sliding door	511	Bearing retainer ring
1	Sliding door	512	Rotating shaft
				11	Connecting plate	52	Fixed retainer ring
12	Door frame	521	Substrate
				13	Door panel	522	Middle shaft
2	Support structure	523	Peripheral part
				21	Opening of the container	524	Through hole
22	Working chamber	61	First spring spacer sleeve
				3	Swing arm	62	Second spring retaining sleeve
4	Elastic piece	71	First thrust bearing
				51	Fixed seat	72	Second thrust bearing

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

As shown in fig. 1 and fig. 2, in an embodiment of the present invention, a sliding door four-bar linkage structure 100 includes a sliding door 1, a supporting structure 2, a swing arm assembly and a component, the supporting structure 2 encloses a working chamber 22 with a side opening 21, the swing arm assembly includes a first thrust bearing 71, a second thrust bearing 72 and at least two swing arms 3, one end of each swing arm 3 is rotatably connected to the supporting structure 2 through the first thrust bearing 71, and the other end is rotatably connected to the sliding door 1 through the second thrust bearing 72, so that the sliding door 1 can move relative to the supporting structure 2 to open or close the opening 21; a first end of the member is connected to the support structure 2 and a second end of the member is connected to one of the swing arms 3, the member being adapted to move the sliding door 1 closer to or towards the support structure 2.

Among the above-mentioned technical scheme, the operator pulls sliding door 1, arrives and predetermines the position, loosens sliding door 1 this moment, and this part can drive swing arm 3 and continue the swing to drive sliding door 1 and open or close opening 21. Therefore, the sliding door 1 can be opened and closed in place every time, potential safety hazards are avoided, safety is improved, and labor intensity of operators is reduced. And the swing arm component comprises at least two swing arms 3 to determine the motion track of the sliding door 1 and improve the stability of the opening and closing motion of the sliding door 1. In addition, in the swing process of the swing arm 3, only the balls in the first thrust bearing 71 and the second reasoning bearing 72 rotate, so that the position deviation caused by the increase of the fit clearance caused by abrasion is reduced, and the structure is more stable in the long-term use process.

The component can be a traction piece, an operator pulls the sliding door 1 to a preset position, the sliding door 1 is loosened at the moment, and the swing arm 3 continues to swing under the action of the traction force of the component so as to drive the sliding door 1 to open or close the opening 21. The component may also be a drive member. The operator provides an initial force or an activation signal which drives the swing arm 3 to swing to open or close the opening 21 of the sliding door 1.

In one embodiment, the support structure 2 is a one-piece cast support frame, in which a working chamber is formed, which communicates with the outside through an opening 21. The whole supporting structure 2 is strong in integrity and high in position precision, machining can be omitted or reduced, manufacturing time is shortened, and manufacturing cost is reduced. Of course, in other embodiments, the support structure 2 may be formed in a splicing manner, and the splicing manner can quickly form the support structure 2 with a suitable size, so as to reduce the production period, and the production manner of the support structure 2 is not limited in this application.

Specifically, the swing arm 3 is connected to the support structure 2 through the fixing seat 51, a first thrust bearing 71 is clamped between the swing arm 3 and the support structure 2, and the fixing seat 51 is sleeved with the first thrust bearing 71. In the swing process of the swing arm 3, only the ball in the first thrust bearing 71 rotates, so that the position deviation caused by the increase of the fit clearance caused by abrasion is reduced, and the structure is more stable in the long-term use process.

Referring to fig. 3, the fixing base 51 includes a bearing retainer ring 511 and a rotating shaft 512 connected to each other, and the first thrust bearing 71 is sleeved on the rotating shaft 512; the rotating shaft 512 penetrates through the swing arm 3, one end, far away from the bearing retainer ring 511, of the rotating shaft 512 is connected with the supporting structure 2, and first thrust bearings 71 are clamped between the swing arm 3 and the bearing retainer ring 511 and between the swing arm 3 and the supporting structure 2. Both sides of the hinged end of the swing arm 3 and the supporting structure 2 are provided with first thrust bearings 71, so that the swing arm 3 rotates relative to the supporting structure 2 more smoothly.

Referring to fig. 4, the sliding door four-bar linkage structure 100 further includes a fixing retainer 52, the sliding door 1 is provided with a connecting plate 11, the connecting plate 11 extends from the sliding door 1 to a direction close to the supporting structure 2, the swing arm 3, the connecting plate 11 and the fixing retainer 52 are connected by fasteners, the second thrust bearings 72 are clamped between the sliding door 1 and the swing arm 3 and between the sliding door 1 and the fixing retainer 52, and the second thrust bearings 72 are sleeved on the fasteners. Both sides of the hinged end of the swing arm 3 and the connecting plate 11 are provided with second thrust bearings 72, so that the swing arm 3 rotates more smoothly relative to the connecting plate 11.

Specifically, the retainer ring 52 includes a base plate 521, a central shaft 522 connected to the base plate 521, and a peripheral portion 523 connected to an edge of the base plate 521, wherein a mounting groove is formed between the peripheral portion 523 and the central shaft 522, the second thrust bearing 72 is disposed in the mounting groove, and the central shaft 522 is provided with a through hole 524 for a fastening member to pass through.

Wherein, sliding door 1 includes door frame 12 and door plant 13, and swing arm 3 is connected with door frame 12, and door plant 13 locates the one side that door frame 12 deviates from swing arm 3, and one side that door frame 12 deviates from door plant 13 is located to connecting plate 11. All the connecting structures are arranged at the rear side of the door plate 13, when the sliding door 1 closes the opening 21, the door plate 13 is arranged at the opening 21 side in a covering mode, the external integrity is improved, and the whole appearance is more attractive. The door 13 may be made of a transparent material, or a transparent window may be provided on the door 13 for observing the state in the working chamber.

In order to facilitate the operation of opening and closing the sliding door 1 by an operator, the door panel 13 is provided with a holding part 14 on the side away from the opening 21. The operator grips or grasps the grip 14 to apply force to the sliding door 1. The holding member 14 may be a handle or a handle protruding from the door panel 13 in a direction away from the door frame 12, or may be a handle groove formed in the door panel 13.

Specifically, the above-mentioned component may be the elastic element 4, and the operator pulls the sliding door 1 to reach the maximum stretching position of the elastic element 4, and then releases the sliding door 1, and the component can drive the swing arm 3 to swing continuously to drive the sliding door 1 to open or close the opening 21. More specifically, the elastic member 4 may be a nitrogen gas spring, the support structure 2 is provided with a first spring collar 61, one of the swing arms 3 is provided with a second spring collar 62, a cylinder body of the elastic member 4 is hinged to the first spring collar 61, and a piston rod of the elastic member 4 is hinged to the second spring collar 62. The first spring collar 61 and the second spring collar 62 together support the elastic member 4 to form an escape space between the elastic member 4 and the support structure 2 for the swing arm 3 to pass through. Of course, in other embodiments, the magnetic attraction may be implemented.

Referring to fig. 2 and fig. 3 again, a first end of the elastic member 4 is hinged to the support structure 2, a second end of the elastic member 4 is connected and hinged to one of the swing arms 3, and when the sliding door 1 opens the opening, the second end of the elastic member 4 is higher than the first end of the elastic member 4; when the sliding door 1 closes the opening, the second end of the elastic member 4 is higher than the first end of the elastic member 4. In an embodiment of the present invention, the sliding door 1 is opened or closed to the opening along the up-and-down movement, avoiding occupying too much space.

In one embodiment, the swing arms 3 are arranged on the supporting structure at intervals along the height direction, the number of the elastic pieces 4 is multiple, and the elastic pieces 4 and the swing arms 3 are consistent in number and are arranged in one-to-one correspondence. When the number of the swing arms 3 is two, the movement track of the sliding door 1 can be determined, when the number of the swing arms 3 is larger than two, the setting angles of the swing arms 3 only have two positions, namely, the movement track of the sliding door 1 is still determined by the two swing arms 3, and the rest swing arms 3 are used for providing additional supporting points.

In addition, the number of swing arm assemblies 2 is two sets of, and two sets of swing arm assemblies 2 divide and locate bearing structure 2's relative both sides, and elastic component 4 is unanimous and the one-to-one setting with the quantity of swing arm assembly. Namely, the left side and the right side of the support structure 2 are respectively provided with a swing arm assembly to support the sliding door 1 together, so that the stability of the sliding door 1 in the clamping process is improved, and when the size of the sliding door 1 is overlarge, the number of the swing arm assemblies 2 can be increased adaptively, and the support points are increased; and the corresponding increase of the swing arm assembly 2, the number of the elastic pieces 4 is also increased, and greater traction force can be provided in the process of restoring the deformation of the elastic pieces 4.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims (10)

1. A sliding door four-bar linkage structure, comprising:

sliding the door;

a support structure having an opening formed at one side thereof;

the swing arm assembly comprises a first thrust bearing, a second thrust bearing and at least two swing arms, one end of each swing arm is rotatably connected with the support structure through the first thrust bearing, and the other end of each swing arm is rotatably connected with the sliding door through the second thrust bearing, so that the sliding door can move relative to the support structure to open or close the opening;

and a component, wherein a first end of the component is connected with the support structure, a second end of the component is connected with one of the swing arms, and the component is used for driving the sliding door to be close to or far away from the support structure.

2. The sliding door four-bar linkage structure according to claim 1, wherein the swing arm is connected to the supporting structure through a fixing seat, a first thrust bearing is clamped between the swing arm and the supporting structure, and the first thrust bearing is sleeved on the fixing seat.

3. The sliding door four-bar linkage structure according to claim 2, wherein the fixing seat comprises a bearing retainer ring and a rotating shaft which are connected, and the first thrust bearing is sleeved on the rotating shaft; the pivot is worn to locate the swing arm, the pivot is kept away from the one end of retaining ring with bearing structure connects, the swing arm with between the retaining ring and the swing arm with all the centre gripping has between the bearing structure first thrust bearing.

4. The sliding door four-bar linkage structure according to claim 1, wherein the sliding door four-bar linkage structure further comprises a fixed retainer ring, a connecting plate is arranged on the sliding door, the connecting plate extends from the sliding door to a direction close to the support structure, the swing arm, the connecting plate and the fixed retainer ring are connected through a fastener, a second thrust bearing is clamped between the sliding door and the swing arm and between the sliding door and the fixed retainer ring, and the second thrust bearing is sleeved on the fastener.

5. A sliding door four-bar linkage structure as claimed in claim 4, wherein said sliding door comprises a door frame and a door panel, said swing arm is connected to said door frame, said door panel is disposed on a side of said door frame away from said swing arm, and said connecting plate is disposed on a side of said door frame away from said door panel.

6. The sliding door four-bar linkage structure according to any one of claims 1 to 5, wherein said member is an elastic member.

7. The sliding door four-bar linkage structure according to claim 6, wherein said elastic member is a nitrogen spring, said support structure is provided with a first spring collar, one of said swing arms is provided with a second spring collar, a cylinder of said elastic member is hinged to said first spring collar, and a piston rod of said elastic member is hinged to said second spring collar.

8. The sliding door four-bar linkage structure according to any one of claims 1 to 5, wherein the support structure is a support frame integrally cast with a working chamber formed therein, and the working chamber communicates with the outside through the opening.

9. The sliding door four-bar linkage structure according to any one of claims 1 to 5, wherein each swing arm is arranged at intervals along the height direction of the supporting structure, the number of the parts is multiple, and the parts and the swing arms are consistent in number and are arranged in one-to-one correspondence.

10. The sliding door four-bar linkage structure according to any one of claims 1 to 5, wherein the number of the swing arm assemblies is two, two sets of the swing arm assemblies are respectively arranged at two opposite sides of the supporting structure, and the components are consistent with the number of the swing arm assemblies and are arranged in one-to-one correspondence.

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