CN219061315U - Double-row pulley block - Google Patents

Abstract

The utility model provides a double-row pulley block, which is characterized in that a double-row pulley structure is arranged, so that the stress surface of the whole structure is multiplied, the stability of the pulley block in the sliding and bearing processes is ensured, and the noise generated during pushing and pulling is reduced; the outer shell, the middle shell and the inner shell are arranged, the adjusting movement between the shells is split into the up-and-down movement of the inner shell relative to the middle shell and the left-and-right movement of the middle shell relative to the outer shell, so that the inner shell only realizes the up-and-down movement of a single wire, and the left-and-right movement of the inner shell relative to other structures is avoided; through setting the well casing to U-shaped shell structure, when there is little error to cause between the front and back pulley in guide rail or double assembly pulley can not balanced atress bearing, the little error of guide rail or assembly pulley is eliminated to the little deformation of well casing accessible structure itself to make the balanced distribution of atress bearing of whole assembly pulley to each pulley, avoid some or some individual bearing of pulley, guarantee the life of whole assembly pulley.

Description

Double-row pulley block

Technical Field

The utility model relates to the technical field of pulleys, in particular to a double-row pulley block.

Background

The sliding door and window structure is a common design mode in modern home, is commonly used for movable furniture components such as a wardrobe, a locker, a sliding door and window and the like, and is usually realized by additionally arranging pulley blocks at the lower edges of the door and the window.

The existing pulley block generally adopts a single-row structure, namely a structure that a plurality of pulleys are arranged in a line to form a plurality of pulleys from front to back. Because the pulley block is directly connected with the sliding door and the sliding window and then slides in a matched manner with the guide rail, the pulley block has only a single-row type stress surface, when the sliding door or the sliding window has larger mass (particularly the sliding door), the unstable phenomenon easily occurs in the sliding and bearing processes, larger noise is generated during the sliding and the sliding, the abrasion of the pulley block is larger, and the service life of the pulley block is shortened.

Accordingly, there is a need in the art for improvement.

Disclosure of Invention

The utility model aims to provide a double-row pulley block so as to solve the problem that a single-row pulley block is unstable in the sliding and bearing processes.

The technical scheme of the utility model is as follows:

this technical scheme provides a double assembly pulley, including shell body, well casing and two inner shells, two arrange in proper order around the inner shell body and set up in the well casing, well casing sets up in the shell body, every set up at least two pulleys in proper order from left to right in the inner shell body, two fixed connection between the inner shell body, two the inner shell body with well casing block is connected just the inner shell body can for well casing realizes reciprocating, well casing with shell body block is connected just well casing can for the shell body realizes controlling the removal.

Further, vertical kidney-shaped shaft holes are formed in two side surfaces of the outer shell along a vertical direction, inclined kidney-shaped shaft holes are formed in two side surfaces of the middle shell along a direction forming a certain angle with a horizontal direction, shaft holes penetrating through the inner shell along a front-back direction are formed in side surfaces of the inner shell, the two shaft holes of the inner shell are connected through a connecting rotating shaft, one end of the connecting rotating shaft sequentially penetrates through the inclined kidney-shaped shaft holes of one side surface of the middle shell and the vertical kidney-shaped shaft holes of one side surface of the outer shell, and the other end of the connecting rotating shaft sequentially penetrates through the inclined kidney-shaped shaft holes of the other side surface of the middle shell and the vertical kidney-shaped shaft holes of the other side surface of the outer shell.

Further, the outer shell comprises a first upper side face, a first front side face and a first rear side face, the first upper side face, the first front side face and the first rear side face are mutually connected to form a shell structure with an open left side face, an open right side face and an open lower side face, and a vertical waist-shaped shaft hole is respectively formed in the first front side face and the first rear side face.

Further, the middle shell comprises a second left side face, a second front side face and a second rear side face, the second left side face, the second front side face and the second rear side face are mutually connected to form a shell structure with an open right side face, an open upper side face and an open lower side face, and an inclined kidney-shaped shaft hole is respectively formed in the second front side face and the second rear side face.

Further, the inner shell comprises a third front side surface and a third rear side surface, wherein the third front side surface and the third rear side surface are respectively provided with a shaft hole, and the two shaft holes are connected through the connecting rotating shaft; the pulley is mounted between the third front side and the third rear side by a pulley shaft.

Further, limit connecting plates are respectively arranged at the two end parts of the connecting rotating shaft, and the diameter size of each limit connecting plate is larger than the width size of the vertical kidney-shaped shaft hole; after the end part of the connecting rotating shaft sequentially passes through the inclined kidney-shaped shaft hole and the vertical kidney-shaped shaft hole, the limiting connecting plate is clamped on the outer surface of the side face of the vertical kidney-shaped shaft hole.

Further, the movable driving structure comprises an adjusting screw, a first connecting plate and a second connecting plate, wherein a first through hole penetrating through the first connecting plate is formed in the first connecting plate, a screw hole penetrating through the second connecting plate is formed in the second connecting plate, the first connecting plate is fixedly connected with the outer shell, the second connecting plate is arranged in the middle shell, a second through hole penetrating through the second left side face is formed in the second left side face of the middle shell, the tail of the adjusting screw penetrates through the first through hole, the second through hole and the screw hole respectively, and the head of the adjusting screw is clamped on the outer surface of the first connecting plate; the adjusting screw is rotated to be screwed into the screw hole, so that the middle shell can be driven to move left and right relative to the outer shell, and the inner shell is driven to move up and down relative to the middle shell.

Further, a first bump is arranged on the upper side surface of the first connecting plate, a second bump is arranged on the front side surface of the first connecting plate, and a third bump is arranged on the rear side surface of the first connecting plate; the first upper side is provided with a first clamping hole matched with the first protruding block, the first front side is provided with a second clamping hole matched with the second protruding block, and the first rear side is provided with a third clamping hole matched with the third protruding block.

Further, a first limit bump is arranged on the inner surface of the second front side surface, a second limit bump is arranged on the inner surface of the second rear side surface, and the second connecting plate is limited to be installed between the first limit bump, the second limit bump and the second left side surface.

Further, a shock absorbing ferrule is sleeved outside the connecting rotating shaft.

According to the technical scheme, the double-row pulley structure is arranged, so that the stress surface of the whole structure is multiplied, the pulley block is ensured to be stable in the sliding and bearing processes, and the noise generated in the pushing and pulling process is reduced; the outer shell, the middle shell and the inner shell are arranged, the adjusting movement between the shells is split into the up-and-down movement of the inner shell relative to the middle shell and the left-and-right movement of the middle shell relative to the outer shell, so that the inner shell only realizes the up-and-down movement of a single wire, and the left-and-right movement of the inner shell relative to other structures is avoided; through setting the well casing to U-shaped shell structure, when there is little error to cause between the front and back pulley in guide rail or double assembly pulley can not balanced atress bearing, the little error of guide rail or assembly pulley is eliminated to the little deformation of well casing accessible structure itself to make the balanced distribution of atress bearing of whole assembly pulley to each pulley, avoid some or some individual bearing of pulley, guarantee the life of whole assembly pulley.

Drawings

Fig. 1 is a schematic structural view of a double-row pulley block in the utility model.

Fig. 2 is a bottom view of the double row pulley block of the present utility model.

Fig. 3 is an exploded view of the double row pulley block of the present utility model.

FIG. 4 is a schematic view of one embodiment of a shock absorbing ferrule of the present utility model.

FIG. 5 is a schematic view of another embodiment of a shock absorbing ferrule of the present utility model.

FIG. 6 is a schematic view of another embodiment of a shock absorbing ferrule of the present utility model after installation.

Reference numerals:

an outer case 1; a vertical kidney-shaped shaft hole 11; a first front side 12; a first rear side 13; a first upper side 14; a middle shell 2; an inclined kidney-shaped shaft hole 21; a second front side 22; a second rear side 23; a second left side 24; an inner housing 3; a shaft hole 31; a connecting shaft 32; a third front side 33; a third rear side 34; a shock absorbing collar 35; raised ring 35-1; a sleeve 36; a pulley 4; an adjusting screw 51; a first connection plate 52; and a second connection plate 53.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

As shown in fig. 1 to 3, a double-row pulley block comprises an outer shell 1, a middle shell 2 and two inner shells 3, wherein the two inner shells 3 are sequentially arranged in the middle shell 2 front and back, the middle shell 2 is arranged in the outer shell 1, at least two pulleys 4 are sequentially arranged in the inner shells 3 from left to right, the two inner shells 3 are fixedly connected, the two inner shells 3 are connected with the middle shell 2 in a clamping manner, the inner shells 3 can move up and down relative to the middle shell 2, the middle shell 2 is connected with the outer shell 1 in a clamping manner, and the middle shell 2 can move left and right relative to the outer shell 1.

In some specific embodiments, vertical kidney-shaped shaft holes 11 are respectively formed on two side surfaces of the outer housing 1 and are arranged along a vertical direction, inclined kidney-shaped shaft holes 21 are respectively formed on two side surfaces of the middle housing 2 and are arranged along a direction forming a certain angle with a horizontal direction, shaft holes 31 penetrating through the inner housing 3 along a front-back direction are formed on the side surfaces of the inner housing 3, the shaft holes 31 of the two inner housings 3 are connected through a connecting rotating shaft 32, one end of the connecting rotating shaft 32 sequentially penetrates through the inclined kidney-shaped shaft holes 21 of one side surface of the middle housing 2 and the vertical kidney-shaped shaft holes 11 of one side surface of the outer housing 1, and the other end of the connecting rotating shaft 32 sequentially penetrates through the inclined kidney-shaped shaft holes 21 of the other side surface of the middle housing 2 and the vertical kidney-shaped shaft holes 11 of the other side surface of the outer housing 1; the two inner shells 3, the middle shell 2 and the outer shell 1 form a complete shell structure through the connecting rotating shaft 32, and the middle shell 2 moves left and right relative to the outer shell 1 under the drive of a moving driving structure, so that the inner shells 3 move up and down relative to the middle shell 2; in addition, both the inner housings 3 can be rotated about the connection shaft 3 without restriction of the outer housing 1.

In this technical scheme, through setting up shell 1, well casing 2 and interior casing 3, with the regulation removal split between the casing become interior casing 3 for well casing 2 reciprocates, well casing 2 moves about for shell 1, make interior casing 3 only realize the reciprocate of single line, avoid interior casing 3 to move about and cause the interference to other structures (such as double assembly pulley and push-and-pull door/austral window, sliding sash's fixed connection structure).

In some embodiments, the outer casing 1 includes a first upper side 14, a first front side 12, and a first rear side 13, where the first upper side 14, the first front side 12, and the first rear side 13 are connected to each other to form a casing structure with left, right, and lower sides open, and a vertical kidney-shaped shaft hole 11 is disposed on each of the first front side 12 and the first rear side 13.

In some embodiments, the middle housing 2 includes a second left side 24, a second front side 22, and a second rear side 23, where the second left side 24, the second front side 22, and the second rear side 23 are connected to each other to form a housing structure with an open right side, an open upper side, and an open lower side, and an inclined kidney-shaped shaft hole 21 is disposed on each of the second front side 22 and the second rear side 23; through setting the well casing 2 into right flank, the open U-shaped shell structure of side and downside, when the little error of the guide rail of cooperation with double assembly pulley or the manufacturing installation little error of double assembly pulley itself cause can not balanced atress bearing between the front and back pulley of same row assembly pulley, the well casing 2 of U-shaped structure can eliminate the little error of guide rail or assembly pulley itself through the micro deformation of structure itself to make the balanced distribution of atress bearing of whole assembly pulley to each pulley on, avoid some or some individual bearing of pulley, guarantee the life of whole assembly pulley.

In some embodiments, the inner housing 3 includes a third front side 33 and a third rear side 34, where the third front side 33 and the third rear side 34 are respectively provided with an axle hole 31, and two axle holes 31 are connected by the connecting shaft 32; the pulley 4 is mounted between the third front side 33 and the third rear side 34 by means of a pulley shaft 41.

In some embodiments, in order to avoid the outer casing 1, the middle casing 2 and the connecting shaft 32 from being disconnected, two end parts of the connecting shaft 32 are respectively provided with a limit connection plate, and the diameter size of the limit connection plate is larger than the width size of the vertical kidney-shaped shaft hole 11; after the end part of the connecting rotating shaft 32 sequentially passes through the inclined kidney-shaped shaft hole 21 and the vertical kidney-shaped shaft hole 11, the limiting connecting plate is clamped on the outer surface of the side face of the vertical kidney-shaped shaft hole 11, so that the structural stability of the double-row pulley block in the use process is ensured.

In some embodiments, the moving driving structure includes an adjusting screw 51, a first connecting plate 52 and a second connecting plate 53, a first through hole penetrating the first connecting plate 52 is provided on the first connecting plate 52, a screw hole penetrating the second connecting plate 53 is provided on the second connecting plate 53, the first connecting plate 52 is fixedly connected with the outer shell 1, the second connecting plate 53 is provided in the middle shell 2, a second through hole penetrating the second left side 24 is provided on the second left side 24 of the middle shell 2, a tail portion of the adjusting screw 51 penetrates through the first through hole, the second through hole and the screw hole, respectively, a head portion of the adjusting screw 51 is clamped on an outer surface of the first connecting plate 52 (an inner surface of the first connecting plate 52 is a surface facing the middle shell 2, and an outer surface is opposite to the first connecting plate 52); by rotating the adjusting screw 51 to screw into the screw hole, the middle housing 2 can be driven to move left and right relative to the outer housing 1, and the inner housing 3 can be driven to move up and down relative to the middle housing 2.

In some embodiments, a first bump is provided on the upper side of the first connection plate 52, a second bump is provided on the front side of the first connection plate 52, and a third bump is provided on the rear side of the first connection plate 52; a first clamping hole matched with the first protruding block is formed in the first upper side surface 14, a second clamping hole matched with the second protruding block is formed in the first front side surface 12, and a third clamping hole matched with the third protruding block is formed in the first rear side surface 13; through setting up first lug, second lug and third lug with the first draw-in hole, second draw-in hole and the third draw-in hole of shell body 1 realize the cooperation block, make first connecting plate 52 and shell body 1 realize three-point fixed connection to improve the balanced bearing nature of whole shell body structure.

In some embodiments, a first limit bump is provided on an inner surface of the second front side 22 (an inner surface of the second front side 22 is a surface of the second front side 22 facing the inner housing 3, and vice versa) and a second limit bump is provided on an inner surface of the second rear side 23 (an inner surface of the second rear side 23 is a surface of the second rear side 23 facing the inner housing 3, and vice versa), and the second connection plate 53 is limited to be mounted between the first limit bump, the second limit bump, and the second left side 24; the first limit bump and the second limit bump are arranged to limit the second connecting plate 53.

In some embodiments, as shown in fig. 4 to 6, a shock absorbing collar 35 is sleeved outside the connection shaft 32. Because the main stress point of the whole double-row pulley block is just at the connecting rotating shaft 32, through sleeving a damping ferrule outside the connecting rotating shaft 32, noise (such as noise transmitted to the middle shell 3, the middle shell 2 and the outer shell 1 through the connecting rotating shaft 32) at the connecting rotating shaft 32 and transmitted to other accessories can be reduced. Wherein, the shock absorbing ferrule can be made of flexible materials such as rubber.

In some embodiments, the sleeve 36 is sleeved outside the shock absorbing collar 35, and the sleeve 36 protects the shock absorbing collar 35. Wherein, the shock absorbing ferrule 35 may be implemented by adopting different structures: (1) As shown in fig. 4, the shock absorbing ring 35 is of an integral structure, that is, the shock absorbing ring 35 is sleeved outside the shock absorbing ring 35, the shock absorbing ring 35 of the integral structure is simple in structure and convenient to process, and for convenient demolding (that is, the shock absorbing ring 35 is detached from the connecting rotating shaft 32), the inner hole of the shock absorbing ring needs to have a certain inclination, however, because the shock absorbing ring 35 is of an integral structure, the inclination of the inner hole of the whole shock absorbing ring 35 is large, which can lead to poor dimensional stability of the shock absorbing ring 35, uneven stress of the inner hole of the shock absorbing ring 35 can be formed, and displacement of the shock absorbing ring 35 can be caused. (2) As shown in fig. 6, the shock absorbing ferrules 35 are of a sectional structure, that is, two shock absorbing ferrules 35 are disposed in each inner housing 3, that is, four shock absorbing ferrules 35 are sleeved on the connecting shaft 32; in each inner housing 3, two shock absorbing ferrules 35 are arranged in front of each other, a circle of protruding rings 35-1 is arranged at the end part of the shock absorbing ferrules 35 close to one end of the inner housing 3, and the protruding rings 35-1 are clamped on the outer surface of the inner housing 3 (the outer surface of the inner housing 3 refers to the surface of the inner housing 3 facing the middle housing 2, and the inner surface is opposite to the outer surface); thus, by arranging the shock absorbing ferrules 35 in a sectional structure, the inclination of the inner hole of each shock absorbing ferrule 35 can be reduced, the demolding requirement can be met, the dimensional stability can be improved, and meanwhile, the occurrence displacement of the shock absorbing ferrules 35 can be limited by arranging the raised rings 35-1, and the stress area of the shock absorbing ferrules 35 can be increased.

But because the inner hole of the shock-absorbing ferrule needs to have a certain inclination during demoulding to realize demoulding,

in the description of the present specification, reference to the terms "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It is to be understood that the utility model is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims.

Claims (10)

1. The utility model provides a double assembly pulley, its characterized in that includes shell body, well casing and two inner shells, two the inner shell body is arranged in proper order around and is set up in the well casing, well casing sets up in the shell body, every set up at least two pulleys in proper order from left to right in the inner shell body, two fixed connection between the inner shell body, two the inner shell body with well casing block is connected just the inner shell body can be for well casing realizes reciprocating, well casing with shell body block is connected just well casing can be for the shell body realizes controlling the removal.

2. The double-row pulley block according to claim 1, wherein vertical kidney-shaped shaft holes are respectively provided on both side surfaces of the outer housing in a vertical direction, inclined kidney-shaped shaft holes are respectively provided on both side surfaces of the middle housing in a direction forming a certain angle with a horizontal direction, shaft holes penetrating the inner housing in a front-rear direction are provided on side surfaces of the inner housing, the shaft holes of the two inner housings are connected by a connecting shaft, one end of the connecting shaft sequentially penetrates through the inclined kidney-shaped shaft hole of one side surface of the middle housing, the vertical kidney-shaped shaft hole of one side surface of the outer housing, and the other end of the connecting shaft sequentially penetrates through the inclined kidney-shaped shaft hole of the other side surface of the middle housing, the vertical kidney-shaped shaft hole of the other side surface of the outer housing.

3. The double row pulley block of claim 2 wherein the outer housing comprises a first upper side, a first front side and a first rear side, the first upper side, the first front side and the first rear side being interconnected to form a left side, right side and lower side open housing structure, a vertical kidney-shaped shaft aperture being provided on each of the first front side and the first rear side.

4. A double row pulley block as claimed in claim 3 wherein the intermediate housing comprises a second left side, a second front side and a second rear side, the second left side, the second front side and the second rear side being interconnected to form a right side, upper side and lower side open housing structure, an inclined kidney-shaped shaft aperture being provided in each of the second front side and the second rear side.

5. The double-row pulley block according to claim 4, wherein the inner housing comprises a third front side surface and a third rear side surface, and a shaft hole is respectively arranged on the third front side surface and the third rear side surface, and the two shaft holes are connected through the connecting rotating shaft; the pulley is mounted between the third front side and the third rear side by a pulley shaft.

6. The double-row pulley block according to claim 2, wherein limit connecting plates are respectively arranged at two end parts of the connecting rotating shaft, and the diameter size of each limit connecting plate is larger than the width size of the vertical kidney-shaped shaft hole; after the end part of the connecting rotating shaft sequentially passes through the inclined kidney-shaped shaft hole and the vertical kidney-shaped shaft hole, the limiting connecting plate is clamped on the outer surface of the side face of the vertical kidney-shaped shaft hole.

7. The double-row pulley block according to claim 5, wherein the moving driving structure comprises an adjusting screw, a first connecting plate and a second connecting plate, a first through hole penetrating through the first connecting plate is formed in the first connecting plate, a screw hole penetrating through the second connecting plate is formed in the second connecting plate, the first connecting plate is fixedly connected with the outer shell, the second connecting plate is arranged in the middle shell, a second through hole penetrating through the second left side surface is formed in the second left side surface of the middle shell, the tail part of the adjusting screw penetrates through the first through hole, the second through hole and the screw hole respectively, and the head part of the adjusting screw is clamped on the outer surface of the first connecting plate; the adjusting screw is rotated to be screwed into the screw hole, so that the middle shell can be driven to move left and right relative to the outer shell, and the inner shell is driven to move up and down relative to the middle shell.

8. The double row pulley block of claim 7, wherein a first bump is provided on the upper side of the first web, a second bump is provided on the front side of the first web, and a third bump is provided on the rear side of the first web; the first upper side is provided with a first clamping hole matched with the first protruding block, the first front side is provided with a second clamping hole matched with the second protruding block, and the first rear side is provided with a third clamping hole matched with the third protruding block.

9. The double row pulley block of claim 7, wherein a first limit tab is provided on an inner surface of the second front side and a second limit tab is provided on an inner surface of the second rear side, the second connecting plate being restrained from being mounted between the first limit tab, the second limit tab and the second left side.

10. The double-row pulley block according to claim 2, wherein a shock absorbing ferrule is sleeved outside the connecting rotating shaft.

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