Rack-type cover unlocking mechanism for blinds

Abstract

The present invention relates to a rack-type cover unlocking mechanism for a covering curtain, which is used to be arranged in a cover at the end of a curtain fabric shaft tube of the covering curtain, the rack-type cover unlocking mechanism comprises a pressure block, a fixed block, at least one gear and at least one reset elastic element, the pressure block and the fixed block are respectively rotatably assembled on different sides of the cover, the gear is pivotally arranged in the cover, at least one of the gears meshingly connects a first rack portion of the pressure block and a second rack portion of the fixed block, the reset elastic element is arranged in the cover, the reset elastic element is connected to any one or more of the pressure block, the fixed block and the gear, so that the pressure block and the fixed block can be linked through the meshing structure of the gear, the first rack portion and the second rack portion, and the reset elastic element provides a reset elastic force to enable the rack-type cover unlocking mechanism to have a linked locking and unlocking function, and can provide good operational convenience and labor-saving effects.

Description

Technical Field

[0001] The present invention relates to a cover unlocking mechanism for a blind, and in particular to a rack-type cover unlocking mechanism applied to a cover at the side end of a curtain fabric shaft tube of the blind, so that the curtain fabric shaft tube can generate locking and unlocking functions in the body side wall of a motor vehicle. Background Art

[0002] The covering curtain currently used in motor vehicles to provide a function of shielding items in the rear storage space of the vehicle body mainly combines a retractor with a curtain in the curtain shaft tube, and the curtain can be pulled out of the curtain shaft tube and unfolded through the retractor, and the unfolded curtain can be automatically retracted into the curtain shaft tube. In order to enable the covering curtain to be assembled in the vehicle body, the covers at both ends of the curtain shaft tube are respectively locked in the two side walls of the rear storage space of the vehicle body through the cover snap mechanism, so that the curtain of the covering curtain can be pulled by the user to unfold the curtain, and then the positioning protrusions at both ends of the curtain tail plate at the rear end of the curtain are snapped into the two side walls of the rear side of the rear storage space of the vehicle body, so that the curtain can be unfolded and positioned, providing a covering function for the rear storage space of the motor vehicle body.

[0003] When a conventional blind is assembled on a motor vehicle body, the buckle mechanism in the covers at both ends of the curtain shaft tube that can be retracted along the center line is fixed to the buckle grooves on the two side walls of the rear storage space of the vehicle body, so that the curtain shaft tube can be assembled and set between the two sides of the vehicle body. Although the buckle mechanism installed in the cover can utilize the buckle mechanism that can be retracted along the center line to enable the curtain shaft tube and the side wall of the vehicle body to have the function of locking and unlocking, during the operation of installing or removing the curtain shaft tube, the operator must forcibly compress the buckle mechanism in the cover along the center line of the curtain shaft tube to unlock it, which is laborious during the disassembly of the blind.

[0004] In order to solve the aforementioned problem of laborious operation, the currently existing cover adopts a rotating unlocking buckle mechanism to provide the user with a more labor-saving operation method. However, the overall composition of the rotating unlocking buckle mechanism is relatively complex in structure, and during the locking and unlocking operation of the rotating unlocking buckle mechanism arranged in the cover, the user must turn the knob to drive the fixed block to perform the locking and unlocking actions, which still has the problem of inconvenient operation. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a rack-type cover unlocking mechanism for a blind, so as to solve the problems of the existing rotating unlocking buckle mechanism having a complex structure and inconvenient operation.

[0006] The technical solution proposed by the present invention is: to provide a rack-type cover unlocking mechanism for a covering curtain, which is used to be installed in a cover at the end of the curtain fabric shaft tube of the covering curtain, wherein a accommodating space with an opening toward one axial end is formed in the peripheral wall of the cover, and the peripheral wall has a first side plate and a second side plate adjacent to each other, wherein a first through hole connected to the accommodating space is provided in the first side plate of the cover, and a second through hole connected to the accommodating space is provided in the second side plate, and a first pivoting portion is provided on a side of the first through hole away from the second through hole, and a second pivoting portion is provided on a side of the second through hole away from the first through hole;

[0007] The rack-type cover unlocking mechanism comprises a pressing block, a fixing block, at least one gear and at least one reset elastic element. The pressing block and the fixing block are rotatably assembled in the first through-hole and the second through-hole of the cover respectively. The pressing block can be screwed out of the first side plate of the cover and screwed into the first side plate, and the fixing block can be screwed out of the second side plate of the cover and screwed into the second side plate. The pressing block has a first rack portion extending into the cover, and the fixing block has a second rack portion extending into the cover, the gear is pivotally arranged in the accommodating space of the cover, at least one of the gears is meshed and connected with the first rack portion of the pressing block and the second rack portion of the fixing block to be linked, the reset elastic element is installed in the cover, and the reset elastic element is connected to any one or more of the gears, the pressing block and the fixing block, and can provide a reset elastic force, so that the rack-type cover unlocking mechanism has a linked locking and unlocking function.

[0008] In the rack-type cover unlocking mechanism of the blind as described above, there is one gear, and the gear has a gear portion, and the first rack portion is staggeredly arranged and meshed with the second rack portion to connect the gear portion.

[0009] In the rack-type cover unlocking mechanism of the curtain as described above, there is one gear, which includes a first gear portion and a second gear portion. The first gear portion and the second gear portion are coaxially arranged, and the diameter of the first gear portion is different from the diameter of the second gear portion. The first rack portion of the pressure block is meshed and connected to the first gear portion, and the second rack portion of the fixed block is meshed and connected to the second gear portion.

[0010] In the rack-type cover unlocking mechanism of the curtain as described above, there are two gears, the two gears are adjacently pivoted in the cover and meshed with each other, one of the two gears is meshedly connected to the first rack portion of the pressure block, and the other gear is meshedly connected to the second rack portion of the fixed block.

[0011] In the rack-type cover unlocking mechanism for the blind as described above, the two gears have equal diameters or different diameters.

[0012] In the rack-type cover unlocking mechanism of the covering curtain as described above, the other end of the peripheral wall of the cover relative to the opening has an end plate connecting the first side plate and the second side plate, the side of the first through hole away from the second through hole has a first pivoting portion, and the side of the second through hole away from the first through hole has a second pivoting portion; the gear is combined with a pivot column and is pivoted on the end plate; one side of the pressure block is a first pivoting end portion, and the pressure block is pivoted to the first pivoting portion with the first pivoting end portion, and the other side of the pressure block relative to the first pivoting end portion is a first movable end portion, and the pressure block can rotate around the first pivoting portion. The first movable end of the pressing block can be rotated so that the first movable end of the pressing block can protrude out of the first side plate of the cover, and the pressing block can be pressed and retracted into the first side plate, and the first rack portion is arranged at the first movable end; one side of the fixed block is a second pivotal end, and the fixed block is pivotally connected to the second pivotal portion with the second pivotal end, and the other side of the fixed block relative to the second pivotal end is a second movable end, and the fixed block can rotate around the second pivotal portion so that the second movable end of the fixing block can protrude out of the second side plate of the cover and retract into the second side plate, and the second rack portion is arranged at the second movable end.

[0013] In the rack-type cover unlocking mechanism of the blind as described above, the pressing block forms a first stopper at the end edge of the first movable end located in the first side plate, and the fixing block forms a second stopper at the end edge of the second movable end located in the second side plate.

[0014] In the rack-type cover unlocking mechanism of the blind as described above, the reset elastic element is a torsion spring, and the first pivotal end of the pressure block, the second pivotal end of the fixing block and any one or more of the gears are combined with the torsion spring to connect the peripheral wall of the cover.

[0015] In the rack-type cover unlocking mechanism of the blind as described above, the resetting elastic element is a compression spring, and either or both of the first movable end of the pressure block and the second movable end of the fixed block are combined with the compression spring to connect the peripheral wall of the cover.

[0016] In the rack-type cover unlocking mechanism of the blind as described above, the resetting elastic element is a torsion spring, the torsion spring is sleeved on the pivot column, and the two ends of the torsion spring are respectively connected to the end plate and the gear.

[0017] In the rack-type cover unlocking mechanism of the covering curtain as described above, there are multiple reset elastic elements, two of which are compression springs, and the remaining reset elastic elements are torsion springs. The first movable end of the pressure block and the second movable end of the fixed block are both combined with one of the compression springs to connect to the peripheral wall of the cover, and each of the gears is combined with one of the torsion springs to connect to the end plate.

[0018] The beneficial effects that can be achieved by the present invention are at least as follows:

[0019] 1. Simple structure: The rack-type cover unlocking mechanism of the present invention is a simplified combination structure of a pressing block, a fixed block, a gear and a reset elastic element, wherein the pressing block and the fixed block are rotatably arranged on different sides of the cover, the gear is installed in the cover, and the gear meshes and connects the first rack part of the pressing block and the second rack part of the fixed block to move in conjunction, and the reset elastic element provides a reset elastic force, so it has the effects of low cost and simple assembly.

[0020] 2. Easy and labor-saving operation: As mentioned above, the linkage between the pressing block and the fixed block of the rack-type cover unlocking mechanism of the present invention is achieved through the meshing linkage between the gear and the first rack portion of the pressing block and the second rack portion of the fixed block, and the reset elastic element provides a reset elastic force, so that the rack-type cover unlocking mechanism has a linkage locking and unlocking function, and has good ease of operation and labor-saving operation.

[0021] In the rack-type cover unlocking mechanism of the present invention, it is also possible to further utilize that when there is one gear, the gear includes a first gear part and a second gear part with different diameters, the first gear part and the second gear part are coaxially arranged, the first rack part of the pressing block is meshed and connected to the first gear part, and the second rack part of the fixed block is meshed and connected to the second gear part; or, when there are two gears, the two gears are meshed with each other, and the diameters of the two gears are different, one of the two gears is meshed and connected to the first rack part of the pressing block, and the other gear is meshed and connected to the second rack part of the fixed block. Thus, the transmission between the pressing block and the fixed block through the transmission of the first gear part and the second gear part with different diameters in the gears, or the transmission between the pressing block and the fixed block through the transmission of the two gears with different diameters, produces a differential effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a plan view of a first preferred embodiment of the rack-type cover unlocking mechanism of the blind of the present invention installed in the cover.

[0023] Figure 2 It is a plan view of a second preferred embodiment of the rack-type cover unlocking mechanism of the blind of the present invention installed in the cover.

[0024] Figure 3 It is a plan view of a third preferred embodiment of the rack-type cover unlocking mechanism of the blind of the present invention installed in the cover.

[0025] Figure 4 for Figure 1 The schematic plan view of the first preferred embodiment of the rack-type cover unlocking mechanism is a schematic view of a torsion spring type resetting elastic element added thereto.

[0026] Figure 5The figure is a top plan view of the cover unlocking mechanism of the object shielding curtain of the present invention applied to the object shielding curtain.

[0027] Figure 6 for Figure 1 The schematic plan view of the pressing block in the first preferred embodiment of the rack-type cover unlocking mechanism when being pressed.

[0028] Figure 7 for Figure 2 The schematic plan view of the pressing block in the second preferred embodiment of the rack-type cover unlocking mechanism when being pressed.

[0029] Figure 8 for Figure 3 The schematic plan view of the pressing block in the third preferred embodiment of the rack-type cover unlocking mechanism when being pressed.

[0030] Description of reference numerals:

[0031] A curtain

[0032] A1 fabric shaft tube A2 fabric

[0033] 10 cover 12 storage space

[0034] 13 peripheral wall 14 first side plate

[0035] 141 first through hole 142 first pivoting portion

[0036] 15 second side plate 151 second perforation

[0037] 152 second pivoting portion 16 end plate

[0038] 20 Rack-type cover unlocking mechanism

[0039] 21 Pressing block 211 First pivot end

[0040] 212 first movable end portion 213 first rack portion

[0041] 214 first stopper

[0042] 22 Fixed block 221 Second pivot end

[0043] 222 second movable end portion 223 second rack portion

[0044] 224 second stopper

[0045] 23A, 23B, 23C, 24D gears

[0046] 230 Gear Department

[0047] 231 first gear part 232 second gear part

[0048] 24A, 24B resetting elastic element

[0049] 25 Pivot. DETAILED DESCRIPTION

[0050] The following is a further description of the technical means adopted by the present invention to achieve the predetermined purpose of the invention with reference to the accompanying drawings and preferred embodiments of the present invention.

[0051] like Figure 1 , which discloses a schematic diagram of a preferred embodiment of the rack-type cover unlocking mechanism 20 of the blind of the present invention installed in the cover 10 of the curtain fabric shaft tube of the blind. The cover 10 is a hollow cover body, and the cover 10 defines a center line, which corresponds to the center axis of the curtain fabric shaft tube. The cover 10 forms a receiving space 12 with an opening toward one end of the center line, and the cover 10 has a peripheral wall 13 around the receiving space 12 and arranged along the center line.

[0052] In the aforementioned cover 10, the peripheral wall 13 includes a first side plate 14 and a second side plate 15, the first side plate 14 and the second side plate 15 are adjacently connected, the first side plate 14 and the second side plate 15 can be vertically connected, or the first side plate 14 and the second side plate 15 can be obliquely connected, the peripheral wall 13 has an end plate 16 connecting the first side plate 14 and the second side plate 15 at the other end relative to the opening, the first side plate 14 is provided with a first through hole 141 connected to the accommodating space 12, the second side plate 15 is provided with a second through hole 151 connected to the accommodating space 12, the first through hole 141 has a first pivoting portion 142 on one side away from the second through hole 151, and the second through hole 151 has a second pivoting portion 152 on one side away from the first through hole 141. In the preferred embodiment, the first side plate 14 is located at the top of the peripheral wall 13 of the cover 10.

[0053] like Figures 1 to 4 As shown, the rack-type cover unlocking mechanism 20 includes a pressing block 21, a fixing block 22, at least one gear 23A, 23B, 23C, 23D and at least one resetting elastic element 24A, 24B, wherein:

[0054] like Figures 1 to 4As shown, the pressing block 21 and the fixing block 22 are rotatably assembled in the first side plate 14 and the second side plate 15 of the adjacent two sides of the cover 10, respectively, wherein the pressing block 21 can be screwed out of the first side plate 14 of the cover 10 and screwed into the first side plate 14, and the fixing block 22 can be screwed out of the second side plate 15 of the cover 10 and screwed into the second side plate 15, and the pressing block 21 has a first rack portion 213 extending into the cover 10, and the fixing block 22 has a second rack portion 223 extending into the cover 10. In this preferred embodiment, the first side plate 14 is located at the top of the peripheral wall 13 of the cover 10, and the pressing block 21 is assembled in the first side plate 14 of the cover 10.

[0055] like Figures 1 to 4 As shown, in this preferred embodiment, one side of the pressing block 21 is a first pivoting end 211, and the pressing block 21 is used to be assembled in the first through hole 141 of the first side plate 14. The pressing block 21 is pivoted to the first pivoting portion 142 with the first pivoting end 211, and the other side of the pressing block 21 relative to the first pivoting end 211 is a first movable end 212. The pressing block 21 can rotate around the first pivoting portion 142 on the side of the first through hole 141, so that the first movable end 212 of the pressing block 21 can protrude outside the first side plate 14 of the cover 10, and the pressing block 21 can be pressed and retracted into the first side plate 14, and the first rack portion 213 is provided at the first movable end 212. The end edge of the first movable end 212 located in the first side plate 14 can also form a first stopper 214 for limiting.

[0056] like Figures 1 to 4 As shown, in this preferred embodiment, one side of the fixing block 22 is a second pivoting end 221, and the fixing block 22 is used to be assembled in the second through hole 151 of the second side plate 15. The fixing block 22 is pivoted to the second pivoting portion 152 with the second pivoting end 221, and the other side of the fixing block 22 relative to the second pivoting end 221 is a second movable end 222. The fixing block 22 can rotate around the second pivoting portion 152 on the side of the second through hole 151, so that the second movable end 222 of the fixing block 22 can extend out of the second side plate 15 of the cover 10 and retract into the second side plate 15, and the second rack portion 223 is provided at the second movable end 222. The end edge of the second movable end 222 located in the second side plate 15 can also form a second stopper 224 for limiting.

[0057] like Figures 1 to 3 As shown, the gears 23A, 23B, 23C, 23D are pivotally disposed in the accommodating space 12 of the cover 10 in combination with a pivot 25, and at least one of the gears 23A, 23B, 23C, 23D meshes and connects the first rack portion 213 of the pressing block 21 and the second rack portion 223 of the fixing block 22 to move in conjunction.

[0058] like Figure 1 to Figure 2 In the embodiment shown, when there is one gear 23A, 23B, the first rack portion 213 and the second rack portion 223 are both meshed and connected with the gears 23A, 23B, and the pressing block 21 and the fixing block 22 can be linked by the meshing of the gears 23A, 23B, the first rack portion 213 and the second rack portion 223.

[0059] In the above, Figure 1 In the first preferred embodiment of the rack-type cover unlocking mechanism, the gear 23A has a gear portion 230 , and the first rack portion 213 of the pressing block 21 and the second rack portion 223 of the fixing block 22 are staggeredly arranged and meshed with the gear portion 230 .

[0060] like Figure 2 In the second preferred embodiment of the rack-type cover unlocking mechanism shown in FIG. 1 , the gear 23B includes a first gear portion 231 and a second gear portion 232. The first gear portion 231 and the second gear portion 232 are coaxially arranged, and the diameter of the first gear portion 231 is different from the diameter of the second gear portion 232. The first rack portion 213 of the pressing block 21 is meshed and connected to the first gear portion 231, and the second rack portion 223 of the fixed block 22 is meshed and connected to the second gear portion 232. Therefore, by utilizing the difference in diameter between the first gear portion 231 and the second gear portion 232, a differential effect is generated between the pressing block 21 and the fixed block 22 through the transmission of the first gear portion 231 and the second gear portion 232 of the gear 23.

[0061] like Figure 4 As shown, when there are two gears 23C and 23D, the two gears 23C and 23D are adjacently pivoted in the cover 10 and mesh with each other. One of the two gears 23C and 23D meshes with the first rack portion 213 of the pressing block 21, and the other gear 23D meshes with the second rack portion 223 of the fixed block 22. The two gears 23C and 23D can have equal diameters or different diameters. When the diameters of the two gears 23C and 23D are different, the transmission between the pressing block 21 and the fixed block 22 through the two gears 23C and 23D of different diameters can also produce a differential effect. Figures 1 to 4 As shown, the resetting elastic elements 24A and 24B are installed in the cover 10, and the resetting elastic elements 24A and 24B are connected to any one or more of the gears 23A, 23B, 24C, 24D, the pressing block 21 and the fixing block 22, and can provide resetting elastic force, so that the rack-type cover unlocking mechanism 20 has a linked locking and unlocking function.

[0062] like Figures 6 to 8As shown, in the above, when the first movable end 212 of the pressing block 21 is pressed and retracted into the first side plate 14, the second movable end 222 of the fixed block 22 can be driven to retract into the second side plate 15 through the meshing linkage of at least one of the gears 23A, 23B, 24C, 24D, the first rack portion 213 of the pressing block 21 and the second rack portion 223 of the fixed block 22, and the elastic deformation of at least one resetting elastic element 24A, and the resetting elastic element 23A is elastically deformed to accumulate elastic energy; when the pressing block 21 is released, the first movable end 212 of the pressing block 21 is reset to protrude outside the first side plate 14 of the cover 10 through the meshing linkage of at least one of the gears, the first rack portion 213 of the pressing block and the second rack portion 223 of the fixed block 22, and the resetting elastic force provided by at least one resetting elastic element 24A, and the second movable end 222 of the fixed block 22 is also automatically protruded outside the second side plate 15 of the cover 10.

[0063] like Figure 1 , Figure 2 and Figure 3 As shown, in a preferred embodiment of the rack-type cover unlocking mechanism of the present invention, the reset elastic element 24A can be one or two compression springs, wherein either one or both of the first movable end 212 of the pressing block 21 and the second movable end 222 of the fixed block 22 are combined with the compression spring to connect the peripheral wall 13 of the cover 10.

[0064] In the rack-type cover unlocking mechanism of the present invention, the reset elastic element 24B can be one or two torsion springs, and either or both of the first pivot end 211 of the pressure block 21 and the second pivot end 221 of the fixing block 22 are combined with the torsion spring to connect the peripheral wall of the cover 10 (not shown).

[0065] In a preferred embodiment of the rack-type cover unlocking mechanism of the present invention, the reset elastic element 24B can be a torsion spring, and the torsion spring is sleeved on the pivot 25, and the two ends of the torsion spring are respectively connected to the end plate 16 and the gears 23A, 23B, 24C, and 24D.

[0066] like Figure 4 As shown, in a preferred embodiment of the rack-type cover unlocking mechanism of the present invention, there are multiple reset elastic elements 24A and 24B, two of which are compression springs, and the remaining reset elastic elements 24B are torsion springs. The first movable end 212 of the pressing block 21 and the second movable end 222 of the fixing block 22 are respectively combined with one of the compression springs to connect the peripheral wall 13 of the cover 10, each of the torsion springs is sleeved on the pivot 25, and each of the gears 23A is combined with one of the torsion springs to connect the end plate 16.

[0067] In a preferred embodiment of the rack-type cover unlocking mechanism of the present invention, there may be multiple reset elastic elements, all of which are torsion springs. The first pivotal end 211 of the pressure block 21, the second pivotal end 221 of the fixing block 22 and at least one of the gears 23A, 23B, 24C, 24D are respectively combined with the torsion springs to connect the peripheral wall 13 of the cover 10.

[0068] like Figure 5 As shown, when the rack-type cover unlocking mechanism 20 of the blind of the present invention is applied to the blind, the rack-type cover unlocking mechanism 20 is assembled to the end of the curtain shaft tube A1 of the blind A through the cover 10. When the blind A is assembled in the rear storage space of the body of a motor vehicle, the covers 10 at both ends of the curtain shaft tube A1 of the blind A are respectively assembled in the assembly grooves preset on the two side walls of the rear storage space of the body, and each cover 10 is locked in the assembly groove of the side wall of the body through the fixing block 22 of the rack-type cover unlocking mechanism 20, so that the curtain shaft tube A1 is locked between the two side walls of the rear storage space of the body.

[0069] When the user wants to remove the curtain A, the user presses the pressing block 21 from the cover 10 at the side end of the curtain shaft tube A1, while the curtain A2 of the curtain A is folded. Figures 6 to 8 As shown, through the meshing linkage between the gears 23A, 23B, 24C, 24D, the first rack portion 213 of the pressure block 21 and the second rack portion 223 of the fixed block 22, and the elastic deformation of at least one reset elastic element 24A, the second movable end portion 222 of the fixed block 22 is driven to retreat into the cover 10, and the user can remove the curtain shaft tube A1 from the two side walls of the rear storage space of the vehicle body.

[0070] As can be seen from the above description, the rack-type cover unlocking mechanism of the present invention is rotatably assembled on different sides of the cover through the pressure block and the fixed block, the gear is installed in the cover, and the gear is respectively connected to the first rack part of the pressure block and the second rack part of the fixed block for meshing and linkage, and the reset elastic element provides a reset elastic force, etc., so that the rack-type cover unlocking mechanism of the present invention has the effects of low cost and simple assembly through the simplified combination structure of the pressure block, the fixed block, the gear and the reset elastic element. At the same time, when the rack-type cover unlocking mechanism is applied to the shade curtain, the linkage between the pressure block and the fixed block of the rack-type cover unlocking mechanism is through the meshing and linkage of the first rack part of the pressure block, the second rack part of the fixed block and the gear, and the reset elastic element provides a reset elastic force, so that the rack-type cover unlocking mechanism has a linkage locking and unlocking function, has good operation simplicity, and has the effects of labor-saving operation.

[0071] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A rack-type cover unlocking mechanism for a blind, which is used to be installed in a cover at the end of a curtain fabric shaft tube of the blind, wherein a accommodating space with an opening toward one axial end is formed in a peripheral wall of the cover, and the peripheral wall has a first side plate and a second side plate adjacent to each other, characterized in that: A first through hole connected to the accommodating space is provided in the first side plate of the cover, a second through hole connected to the accommodating space is provided in the second side plate, a first pivoting portion is provided on a side of the first through hole away from the second through hole, and a second pivoting portion is provided on a side of the second through hole away from the first through hole; The rack-type cover unlocking mechanism comprises a pressing block, a fixing block, at least one gear and at least one reset elastic element. The pressing block and the fixing block are rotatably assembled in the first through hole and the second through hole of the cover respectively. The pressing block can be screwed out of the first side plate of the cover and screwed into the first side plate, and the fixing block can be screwed out of the second side plate of the cover and screwed into the second side plate. The pressing block has a first rack portion extending into the cover, and the fixing block has a second rack portion extending into the cover, the gear is pivotally arranged in the accommodating space of the cover, at least one of the gears meshes and connects the first rack portion of the pressing block and the second rack portion of the fixing block to be linked, the reset elastic element is installed in the cover, and the reset elastic element is connected to any one or more of the gears, the pressing block and the fixing block, and can provide a reset elastic force, so that the rack-type cover unlocking mechanism has a linked locking and unlocking function, wherein, The other end of the peripheral wall of the cover relative to the opening has an end plate connecting the first side plate and the second side plate, the side of the first through hole away from the second through hole has a first pivoting portion, and the side of the second through hole away from the first through hole has a second pivoting portion; The gear is pivotally mounted on the end plate in conjunction with a pivot column; One side of the pressing block is a first pivot end portion, the pressing block is pivotally connected to the first pivot portion by the first pivot end portion, the other side of the pressing block relative to the first pivot end portion is a first movable end portion, the pressing block can rotate around the first pivot portion, so that the first movable end portion of the pressing block can protrude out of the first side plate of the cover, and the pressing block can be pressed to retract into the first side plate, and the first rack portion is provided at the first movable end portion; One side of the fixed block is a second pivot end, and the fixed block is pivotally connected to the second pivot part with the second pivot end. The other side of the fixed block relative to the second pivot end is a second movable end. The fixed block can rotate around the second pivot part so that the second movable end of the fixed block can extend out of the second side plate of the cover and retract into the second side plate. The second rack part is arranged at the second movable end.

2. The rack-type cover unlocking mechanism for the blind according to claim 1, characterized in that: There is one gear, and the gear has a gear portion. The first rack portion and the second rack portion are staggered and meshed with each other to connect the gear portion.

3. The rack-type cover unlocking mechanism for a blind according to claim 1, characterized in that: There is one gear, which includes a first gear portion and a second gear portion. The first gear portion and the second gear portion are coaxially arranged, and the diameter of the first gear portion is different from the diameter of the second gear portion. The first rack portion of the pressure block is meshed and connected to the first gear portion, and the second rack portion of the fixed block is meshed and connected to the second gear portion.

4. The rack-type cover unlocking mechanism for a blind according to claim 1, characterized in that: There are two gears, which are adjacently pivoted in the cover and meshed with each other. One of the two gears is meshed with the first rack portion of the pressing block, and the other gear is meshed with the second rack portion of the fixing block.

5. The rack-type cover unlocking mechanism for a blind according to any one of claims 1 to 4, characterized in that: The pressing block forms a first stopper at the end edge of the first movable end located in the first side plate, and the fixing block forms a second stopper at the end edge of the second movable end located in the second side plate.

6. The rack-type cover unlocking mechanism for a blind according to any one of claims 1 to 4, characterized in that: The resetting elastic element is a torsion spring, and the first pivoting end of the pressing block, the second pivoting end of the fixing block and any one or more of the gears are combined with the torsion spring to connect the peripheral wall of the cover.

7. The rack-type cover unlocking mechanism for a blind according to any one of claims 1 to 4, characterized in that: The resetting elastic element is a compression spring, and either or both of the first movable end of the pressing block and the second movable end of the fixing block are combined with the compression spring to connect to the peripheral wall of the cover.

8. The rack-type cover unlocking mechanism for a blind according to any one of claims 1 to 4, characterized in that: The resetting elastic element is a torsion spring, which is sleeved on the pivot column, and two ends of the torsion spring are respectively connected to the end plate and the gear.

9. The rack-type cover unlocking mechanism for a blind according to any one of claims 1 to 4, characterized in that: There are multiple reset elastic elements, two of which are compression springs, and the remaining reset elastic elements are torsion springs. The first movable end of the pressure block and the second movable end of the fixed block are respectively combined with a compression spring to connect to the peripheral wall of the cover, and each of the gears is combined with a torsion spring to connect to the end plate.

Images