Splicing tackle pull-open prevention structure

Abstract

The utility model relates to an anti-pull-open structure of a splicing tackle. The technical problem that separation occurs in the pulling process due to the fact that existing connection is not firm enough is solved. Comprising a tackle main body with a tackle arm mounted at one end, the tackle main body is provided with two horizontally adjacent tackle half bodies and an insertion piece body arranged between the two tackle half bodies, and tackle splicing connecting assemblies are arranged between the ends, close to the tackle arm, of the tackle half bodies and between the ends, close to the insertion piece body, of the tackle half bodies. A pulley horizontal pull-open prevention assembly capable of preventing the two pulley half bodies from being separated in the horizontal direction is arranged between the other end of the insertion piece body and the ends, away from the pulley arms, of the two pulley half bodies. The curtain tackle has the advantages that the two tackle half bodies are spliced into the tackle main body through the inserting piece body, and meanwhile, the inserting piece body is matched with the anti-falling grooves of the tackle half bodies through the anti-falling parts, so that the situation that the tops of the two tackle half bodies are pulled open, the tackle main body is deformed, and normal use of a curtain is affected can be prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric curtain equipment, and particularly relates to a splicing pulley anti-unzipping structure. Background Art

[0002] Existing electric curtains consist of a pulley, a timing belt, and a motor. The timing belt connects to the pulley and is driven by the motor. The pulley is a key structure that drives the curtain fabric inside the curtain. The curtain opens and closes automatically through the reciprocating movement of the pulley. Most current pulleys are spliced, but the connection is not strong enough, which can easily cause separation during the synchronous belt pull, resulting in deformation and affecting the normal use of the curtain. Summary of the Invention

[0003] The purpose of the utility model is to provide a splicing pulley anti-pull-away structure in response to the above problems.

[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a pulley splicing anti-separation structure, comprising a pulley body with a pulley arm mounted on one end, the pulley body having two horizontally adjacent pulley halves and an insert body disposed between the two pulley halves, a pulley splicing connection assembly disposed between the ends of the pulley halves proximal to the pulley arm and one end of the insert body, and a pulley horizontal anti-separation assembly disposed between the other end of the insert body and the ends of the two pulley halves distal to the pulley arm, which prevents the two pulley halves from separating horizontally. The two pulley halves are spliced ​​together into the pulley body via the insert body, and the pulley horizontal anti-separation assembly is then used to prevent the pulley body from separating during operation, thereby preventing deformation of the pulley body.

[0005] In the above-mentioned anti-unzipping structure for a spliced ​​pulley, the two pulley halves are arranged symmetrically in the horizontal direction and have the same outer size.

[0006] In the above-mentioned anti-unzipping structure for a spliced ​​pulley, the insert is in the form of a thin sheet and is disposed between the two pulley halves, with both sides of the insert extending to the inner sides of the two pulley halves. The design structure of the insert effectively saves space and prevents the pulley body from being too large.

[0007] In the aforementioned anti-separation structure for a splicing pulley, the insert body includes a horizontal insert base, vertically disposed side inserts on either side of the upper end of the insert base, and a vertically disposed middle insert located between the two side inserts in the middle of the upper end of the insert base. The two side inserts are respectively connected to the pulley halves, thereby enabling the two pulley halves to be spliced ​​together.

[0008] In the above-mentioned anti-unzipping structure of a spliced ​​pulley, the bottom of the plug, the side plug-in part and the middle plug-in part are connected as an integrated structure and are made of metal material. The lengths of the two side plug-in parts are equal and symmetrically arranged, and the lengths of the middle plug-in parts are respectively greater than those of the side plug-in parts.

[0009] In the above-mentioned anti-pull-out structure of a spliced ​​pulley, the pulley splicing connection assembly includes bottom plug-in grooves horizontally arranged on the inner side of one end of the pulley half body close to the pulley arm, one end of the bottom plug-in groove is connected to a splicing connection groove located inside a side away from each other of the pulley half body and vertically arranged, the bottom of the plug-in piece is plugged into the bottom plug-in groove and the side plug-in part is plugged into the splicing connection groove, and a fixing structure is provided between the bottom of the plug-in piece and the pulley half body.

[0010] In the above-mentioned anti-pull-out structure of a spliced ​​pulley, the fixing structure includes mounting holes arranged at both ends of the bottom of the plug, the lower end of the pulley half is provided with a fixing hole passing through the bottom plug-in groove, and the mounting hole and the fixing hole are fixedly connected by fixing bolts, and one end of the pulley arm is arranged on one side of the lower end of the pulley half by a fixing bolt.

[0011] In the above-mentioned anti-pull-out structure of a spliced ​​pulley, side plug-in grooves are respectively provided on the side where the two pulley halves are close to each other. One end of the side plug-in groove is connected to the end of the bottom plug-in groove away from the splicing connection groove and the other end extends to the end of the pulley half away from the pulley arm. The side plug-in grooves are symmetrically arranged and spliced ​​together to form a middle positioning channel of the pulley for inserting the middle plug-in part.

[0012] In the aforementioned anti-separation structure for a spliced ​​pulley, the horizontal anti-separation assembly includes anti-slip features positioned on either side of the middle insertion portion, distal from the bottom of the insert. These anti-slip features engage with anti-slip grooves located at one end of the side insertion grooves and connected to the side insertion grooves. The interaction between the anti-slip features and the anti-slip grooves prevents the upper end of the pulley body from being pulled apart during operation, thereby improving overall stability.

[0013] In the above-mentioned anti-unzipping structure of a spliced ​​pulley, the anti-slip portion is convex and is connected to the middle plug-in portion as an integrated structure. The two anti-slip portions are close to each other on one side and have anti-slip slopes inclined in opposite directions, and the pulley half is provided with an observation hole connected to the anti-slip groove.

[0014] Compared with the existing technology, the advantages of this utility model are:

[0015] The device uses an insert body to assemble the two pulley halves into a pulley main body. At the same time, the insert body cooperates with the anti-slip groove of the pulley half through the anti-slip part, which can prevent the tops of the two pulley halves from being pulled apart, causing deformation of the pulley main body, thereby affecting the normal use of the curtain. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the present utility model.

[0017] Figure 2 It is a structural sectional view of the pulley body in the utility model.

[0018] Figure 3 It is a structural diagram of the insert body in the utility model.

[0019] Figure 4 It is a structural schematic diagram of the pulley half body in the utility model.

[0020] In the figure: the pulley body 1, the pulley arm 11, the pulley half body 2, the side plug-in groove 21, the pulley middle positioning channel 22, the observation hole 23, the plug-in body 3, the plug-in bottom 31, the side plug-in part 32, the middle plug-in part 33, the pulley splicing connection component 4, the bottom plug-in groove 41, the splicing connection groove 42, the pulley horizontal anti-pull-opening component 5, the anti-slip part 51, the anti-slip groove 52, the anti-slip inclined surface 53, the fixing structure 6, the mounting hole 61, and the fixing hole 62. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0022] like Figure 1-4 As shown, a spliced ​​pulley anti-separation structure includes a pulley body 1 with a pulley arm 11 mounted at one end. The pulley body 1 has two horizontally adjacent pulley halves 2 and an insert 3 disposed between the two pulley halves 2. A pulley splicing connection assembly 4 is disposed between the ends of the pulley halves 2 proximal to the pulley arm 11 and one end of the insert 3. A pulley horizontal anti-separation assembly 5, which prevents the two pulley halves 2 from horizontally separating, is disposed between the other end of the insert 3 and the ends of the two pulley halves 2 distal to the pulley arm 11. The two pulley halves 2 are spliced ​​together to form the pulley body 1 via the insert 3. The pulley horizontal anti-separation assembly 5 then ensures that the pulley body 1 does not separate during operation, thereby preventing deformation of the pulley body 1.

[0023] like Figure 1 As shown, the two pulley half bodies 2 are arranged symmetrically in the horizontal direction and the two pulley half bodies 2 have the same outer size.

[0024] like Figure 3 As shown, the insert body 3 is in the form of a thin sheet and is disposed between the two pulley halves 2, and both sides of the insert body 3 extend to the inner sides of the two pulley halves 2. The design structure of the insert body 3 can effectively save space and avoid the pulley body 1 from being too large.

[0025] The insert body 3 includes a horizontal insert base 31, vertically disposed side inserting portions 32 on either side of the upper end of the insert base 31, and a vertically disposed middle inserting portion 33 located between the two side inserting portions 32 at the middle of the upper end of the insert base 31. The two side inserting portions 32 are respectively connected to the pulley halves 2, thereby enabling the two pulley halves 2 to be spliced ​​together.

[0026] Specifically, the bottom 31 of the insert, the side insert parts 32 and the middle insert part 33 are connected as an integrated structure and are made of metal material. The two side insert parts 32 are equal in length and symmetrically arranged, and the length of the middle insert part 33 is greater than that of the side insert parts 32.

[0027] like Figure 2 As shown, the pulley splicing connection assembly 4 includes bottom plug-in grooves 41 horizontally arranged on the inner side of one end of the pulley half 2 close to the pulley arm 11, one end of the bottom plug-in groove 41 is connected to a splicing connection groove 42 located inside a side away from each other of the pulley half 2 and vertically arranged, the bottom of the plug 31 is plugged into the bottom plug-in groove 41 and the side plug-in part 32 is plugged into the splicing connection groove 42, and a fixing structure 6 is provided between the bottom of the plug 31 and the pulley half 2.

[0028] Combine Figure 2 and Figure 3 As shown, the fixing structure 6 includes mounting holes 61 arranged at both ends of the bottom 31 of the insert, and a fixing hole 62 is provided at the lower end of the pulley half body 2, which passes through the bottom plug-in groove 41, and the mounting hole 61 and the fixing hole 62 are fixedly connected by fixing bolts, and one end of the pulley arm 11 is set on one side of the lower end of the pulley half body 2 by a fixing bolt.

[0029] Among them, the two pulley halves 2 are respectively provided with side plug-in grooves 21 on the side close to each other, one end of the side plug-in groove 21 is connected to the end of the bottom plug-in groove 41 away from the splicing connection groove 42 and the other end extends to the end of the pulley half 2 away from the pulley arm 11. The side plug-in grooves 21 are symmetrically arranged and spliced ​​together to form a pulley middle positioning channel 22 for the middle plug-in part 33 to be inserted.

[0030] Specifically, the pulley horizontal anti-unzipping assembly 5 includes anti-slip portions 51 disposed on both sides of the end of the intermediate insertion portion 33 away from the insert bottom 31. The anti-slip portions 51 are inserted into anti-slip grooves 52 located at one end of the side insertion groove 21 and connected to the side insertion groove 21. The interaction between the anti-slip portions 51 and the anti-slip grooves 52 can prevent the upper end of the pulley body 1 from being pulled apart during operation, thereby improving the overall stability.

[0031] Combine Figure 3 and Figure 4As shown, the anti-slip portion 51 is convex and is connected to the middle plug-in portion 33 as an integral structure. The two anti-slip portions 51 have anti-slip slopes 53 inclined in opposite directions on the side close to each other, and the pulley half body 2 is provided with an observation hole 23 connected to the anti-slip groove 52.

[0032] The principle of this embodiment is:

[0033] The side plug-in parts 32 of the plug-in body 3 are respectively inserted into the splicing connection grooves 42 of the pulley half-bodies 2, and the middle plug-in part 33 is inserted into the middle positioning channel 22 of the pulley, so that the two pulley half-bodies 2 are spliced ​​into the pulley main body 1, and then the anti-slip parts 51 on the middle plug-in part 33 are respectively set in the anti-slip grooves 52 of the pulley half-bodies 2, so as to prevent the pulley main body 1 from separating during operation.

[0034] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0035] Although this document frequently uses terms such as the pulley body 1, pulley arm 11, pulley half body 2, side plug-in slot 21, pulley intermediate positioning channel 22, observation hole 23, insert body 3, insert bottom 31, side plug-in portion 32, intermediate plug-in portion 33, pulley splicing connection assembly 4, bottom plug-in slot 41, splicing connection slot 42, pulley horizontal anti-pull-out assembly 5, anti-slip portion 51, anti-slip slot 52, anti-slip inclined surface 53, fixing structure 6, mounting hole 61, fixing hole 62, etc., the possibility of using other terms is not excluded. The use of these terms is merely to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. A splicing pulley anti-pull-out structure, comprising a pulley body (1) with a pulley arm (11) installed at one end, the pulley body (1) having two pulley halves (2) arranged horizontally adjacent to each other and an insert body (3) arranged between the two pulley halves (2), a pulley splicing connection assembly (4) is provided between one end of the pulley half (2) close to the pulley arm (11) and one end of the insert body (3), characterized in that: A pulley horizontal anti-pull-away assembly (5) capable of preventing the two pulley halves (2) from separating in the horizontal direction is provided between the other end of the insert body (3) and one end of the two pulley halves (2) away from the pulley arm (11).

2. The anti-unzipping structure for a splicing pulley according to claim 1, characterized in that: The two pulley halves (2) are arranged symmetrically in the horizontal direction and have the same outer dimensions.

3. The anti-unzipping structure for a splicing pulley according to claim 2, characterized in that: The insert body (3) is in the shape of a thin sheet and is arranged between the two pulley half bodies (2), and both sides of the insert body (3) extend to the inner sides of the two pulley half bodies (2).

4. A splicing pulley anti-unzipping structure according to claim 1, 2 or 3, characterized in that: The insert body (3) comprises an insert bottom (31) arranged horizontally, and vertically arranged side inserting portions (32) are respectively provided on both sides of the upper end of the insert bottom (31), and a vertically arranged middle inserting portion (33) is provided in the middle of the upper end of the insert bottom (31) and is located between the two side inserting portions (32).

5. The anti-unzipping structure for a splicing pulley according to claim 4, characterized in that: The insert bottom (31), the side insert portion (32) and the middle insert portion (33) are connected as an integrated structure and are made of metal material. The two side insert portions (32) are equal in length and symmetrically arranged, and the middle insert portion (33) is longer than the side insert portions (32).

6. The anti-unzipping structure for a splicing pulley according to claim 4, characterized in that: The pulley splicing connection assembly (4) includes a bottom plug-in groove (41) horizontally arranged on the inner side of one end of the pulley half body (2) close to the pulley arm (11), one end of the bottom plug-in groove (41) is connected to a splicing connection groove (42) located inside a side away from each other of the pulley half body (2) and vertically arranged, the bottom of the plug (31) is plugged into the bottom plug-in groove (41) and the side plug-in part (32) is plugged into the splicing connection groove (42), and a fixing structure (6) is provided between the bottom of the plug (31) and the pulley half body (2).

7. The anti-unzipping structure for a splicing pulley according to claim 6, characterized in that: The fixing structure (6) includes mounting holes (61) arranged at both ends of the bottom of the insert (31), the lower end of the pulley half body (2) is provided with a fixing hole (62) that passes through the bottom plug-in groove (41), and the mounting hole (61) and the fixing hole (62) are fixedly connected by fixing bolts, and one end of the pulley arm (11) is arranged on one side of the lower end of the pulley half body (2) by a fixing bolt.

8. The anti-unzipping structure for a splicing pulley according to claim 6, characterized in that: The two pulley halves (2) are provided with side insertion grooves (21) on the sides close to each other, one end of the side insertion groove (21) is connected to the end of the bottom insertion groove (41) away from the splicing connection groove (42) and the other end extends to the end of the pulley half (2) away from the pulley arm (11), and the side insertion grooves (21) are symmetrically arranged and spliced ​​together to form a pulley intermediate positioning channel (22) for the intermediate insertion part (33) to be inserted.

9. The anti-unzipping structure for a splicing pulley according to claim 8, characterized in that: The pulley horizontal anti-pull-out assembly (5) includes anti-slip portions (51) arranged on both sides of one end of the middle plug-in portion (33) away from the bottom of the plug-in piece (31), and the anti-slip portions (51) are inserted into an anti-slip groove (52) located at one end of the side plug-in groove (21) and connected to the side plug-in groove (21).

10. The anti-unzipping structure for a splicing pulley according to claim 9, characterized in that: The anti-slip portion (51) is convex and is connected to the intermediate plug-in portion (33) to form an integral structure. The two anti-slip portions (51) have anti-slip inclined surfaces (53) inclined in opposite directions on the sides close to each other, and the pulley half (2) is provided with an observation hole (23) connected to the anti-slip groove (52).

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