A bidirectional rotating self-locking actuator

Abstract

The invention discloses a two-way rotating self-locking actuator, which does not need to distinguish the direction of rotation and self-locking, comprises a rotary cover, a pressing head, a base and an aerosol valve, the aerosol valve is installed on the inner side of the base, the rotary cover is rotatably connected to the base, the pressing head is arranged in the rotary cover and connected to the aerosol valve, and the pressing head is connected to the exposed spray nozzle, the rotary cover comprises a cover top and a cover body, a limiting structure is arranged between the cover body and the pressing head when the rotary cover is rotated and can make the pressing head move up and down relative to the cover body, the cover top is made of soft rubber and can be deformed downward to press the pressing head when pressed, a guide strip is arranged on the side surface of the base, a guide groove corresponding to the guide strip up and down is arranged on the pressing head, the pressing head is located on the left and right sides of the guide groove, and locking pieces that can be screwed into the top of the guide strip to limit the pressing head downward when the pressing head rotates left and right relative to the base are respectively arranged, and a positioning structure is arranged between the base and the rotary cover, which can stop the rotary cover from rotating when the guide strip corresponds to the guide groove and can be disengaged from the limit under the action of external force.

Description

[Technical field]

[0001] The invention relates to a bidirectional rotation self-locking actuator. [Background technology]

[0002] Aerosol actuators used in aerosol cans usually do not have a self-locking function, which can easily cause the contents of the can to spray out during transportation or when pressed by mistake, causing unnecessary trouble. For this reason, some aerosol actuators are provided with a self-locking function, which makes the structure complicated and usually one-way self-locking. When locking and unlocking, the user needs to distinguish the direction before operating, or in some cases, if the direction is incorrectly distinguished or the direction is not distinguished, the locking structure or even the actuator is easily damaged when the wrong direction is turned.

[0003] The present invention is made based on this situation. [Summary of the invention]

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a bidirectional rotating self-locking actuator which has a simple structure and can be operated in both directions.

[0005] The present invention is achieved through the following technical solutions:

[0006] The cam is provided with a locking piece which can be screwed into the upper part of the guide bar and limit the downward movement of the press head when the press head rotates relative to the base; and a positioning structure is provided between the base and the rotary cover which can stop the rotary cover from rotating when the guide bar corresponds to the guide groove and can be disengaged from the limit under the action of external force so that the rotary cover can rotate relative to the base.

[0007] A bidirectional rotating self-locking actuator as described above, wherein the positioning structure includes a positioning plate arranged on the base, and a positioning rib arranged on the inner side of the cover body, wherein there are two positioning ribs and they are respectively located on the left and right sides of the positioning plate, and the upper end of the positioning plate is slightly higher than the lower end of the positioning rib and blocks the positioning rib from rotating left and right. When an external force is applied to rotate the rotary cover, the positioning rib can forcibly rotate over the positioning plate.

[0008] A bidirectional rotating self-locking actuator as described above, an arc groove is provided on the side of the base, and a buckle is provided on the inner side of the cover body, which is inserted into the arc groove and can rotate left and right in the arc groove. The left and right ends of the arc groove are closed and used to limit the angle of rotation of the buckle to the left and right. When the guide bar and the guide groove are opposite to each other, the buckle is located in the middle of the arc groove. When the buckle rotates to the left or right end of the arc groove, the guide bar is still below the locking plate.

[0009] As described above, a bidirectional rotating self-locking actuator is provided with a locking rib on the left and right sides of the two positioning ribs on the inner side of the cover body, and the upper end of the positioning piece is slightly higher than the lower end of the locking rib and blocks the locking rib from rotating left and right. When the rotary cover is rotated by external force, the locking rib can forcibly cross the positioning piece and rotate. When the buckle rotates to the left end of the arc groove, the locking rib on the right side passes over the positioning piece and blocks the positioning piece from rotating to the right; similarly, when the buckle rotates to the right end of the arc groove, the locking rib on the left side passes over the positioning piece and blocks the positioning piece from rotating to the left.

[0010] As described above, in a bidirectional rotating self-locking actuator, the matching structure composed of the positioning plate, positioning rib, arc groove, buckle and locking rib is evenly arranged in two groups around the circumferential direction, and the matching structure composed of the guide bar, guide groove and locking plate is evenly arranged in two or four groups around the circumferential direction.

[0011] In the bidirectional rotating self-locking actuator as described above, the rotating cover is clamped on the base through a connecting structure of an arc groove and a buckle.

[0012] In the bidirectional rotating self-locking actuator as described above, the limiting structure includes a limiting groove arranged on the side of the push head, and a limiting strip inserted into the limiting groove is arranged on the inner side of the cover body.

[0013] A bidirectional rotating self-locking actuator as described above, the aerosol valve includes a sealing cup, an outer gasket, a valve stem, an inner sealing ring, a spring, a valve chamber and a straw, the sealing cup is installed and connected to the base, a fixing cap is provided in the middle of the sealing cup, the upper end of the valve chamber is fixed on the inner side of the fixing cap, the valve stem is located in the valve chamber and the upper end passes through the top of the fixing cap and is connected to the pressing head, the inner sealing ring is sleeved on the outer side of the valve stem and fixed between the upper port of the valve chamber and the fixing cap to seal the upper port of the valve chamber, the upper part of the valve stem is hollow and an inlet located below the inner sealing ring is provided on its side, the spring is arranged in the valve chamber to press the valve stem upward, and the straw is inserted into the lower end of the valve chamber.

[0014] Compared with the prior art, the present invention has the following advantages: the present invention has a simple structure, is easy to produce and assemble, can rotate bidirectionally and self-lock, has no direction distinction, and is easy to operate and use.

Brief Description of the Drawings

[0015] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0016] Figure 1 It is an exploded view of a bidirectional rotating self-locking actuator of the present invention;

[0017] Figure 2 is a cross-sectional view of a bidirectional rotating self-locking actuator of the present invention;

[0018] Figure 3 It is a schematic diagram of the structure of the screw cap;

[0019] Figure 4 is a schematic diagram of the structure of the base;

[0020] Figure 5 It is an application structure diagram of a bidirectional rotating self-locking actuator of the present invention. [Specific implementation method]

[0021] The present invention will be further described below in conjunction with the accompanying drawings:

[0022] like Figures 1 to 4 A bidirectional rotating self-locking actuator is shown, comprising a rotary cover 1, a pressing head 2, a base 3 and an aerosol valve, wherein the aerosol valve is mounted on the inner side of the base 3, the rotary cover 1 is rotatably connected to the base 3, the pressing head 2 is arranged inside the rotary cover 1 and connected to the aerosol valve, the pressing head 2 is connected to a spray nozzle 4 exposed from the rotary cover 1, the rotary cover 1 comprises a cover top 11 and a cover body 12, a limiting structure is arranged between the cover body 12 and the pressing head 2, which can rotate with the pressing head 2 when the rotary cover 1 rotates and can make the pressing head 2 move up and down relative to the cover body 12, the cover top 11 is made of soft rubber and can be deformed downward when pressed To push the push head 2 to move downward, a guide strip 31 is provided on the side of the base 3, and a guide groove 21 is provided on the push head 2, which corresponds to the guide strip 31 and allows the push head 2 to move up and down relative to the base 3. The push head 2 is located on the left and right sides of the guide groove 21 and is respectively provided with locking pieces 22 that can be screwed into the top of the guide strip 31 to limit the push head 2 from moving downward when the push head 2 rotates left and right relative to the base 3. A positioning structure is provided between the base 3 and the rotary cover 1, which can block the rotation of the rotary cover 1 when the guide strip 31 corresponds to the guide groove 21, and can be disengaged from the restriction under the action of external force to allow the rotary cover 1 to rotate relative to the base 3.

[0023] The cover top 11 and the cover body 12 of the screw cap 1 can be produced by injection molding process, using two different materials to achieve the characteristics of soft cover top 11 and hard cover body 12.

[0024] Rotating the rotary cover 1 can drive the push head 2 to rotate together. When the rotary cover 1 is rotated left or right, the locking piece 22 on one of the left and right sides of the guide groove 21 can be blocked above the guide bar 31. The guide bar 31 blocks the locking piece 22 and prevents the push head 2 from being pressed down, thereby realizing bidirectional rotation self-locking.

[0025] like Figure 3 and Figure 4 As shown, the positioning structure includes a positioning piece 32 arranged on the base 3, and a positioning rib 13 arranged on the inner side of the cover body 12. There are two positioning ribs 13 and they are respectively located on the left and right sides of the positioning piece 32. The upper end of the positioning piece 32 is slightly higher than the lower end of the positioning rib 13 and blocks the positioning rib 13 from rotating left and right. When the rotary cover 1 is rotated by external force, the positioning rib 13 can forcibly pass over the positioning piece 32 to rotate the rotary cover 1. The structure is simple, so that when in use, the guide bar 31 and the guide groove 21 can be stably in correspondence with each other up and down, so that the pressing head 2 can be pressed down.

[0026] An arc groove 33 is provided on the side of the base 3, and a buckle 14 is provided on the inner side of the cover body 12, which is inserted into the arc groove 33 and can rotate left and right in the arc groove 33. The left and right ends of the arc groove 33 are closed and used to limit the angle of rotation of the buckle 14 to the left and right. When the guide bar 31 and the guide groove 21 are opposite to each other, the buckle 14 is located in the middle of the arc groove 33. When the buckle 14 rotates to the left or right end of the arc groove 33, the guide bar 31 is still below the locking piece 22.

[0027] The inner side of the cover body 12 is provided with a positioning rib 15 on the left and right sides of the two positioning ribs 13, and the upper end of the positioning piece 32 is slightly higher than the lower end of the positioning rib 15 and blocks the positioning rib 15 from rotating left and right. When the rotary cover 1 is rotated by external force, the positioning rib 15 can forcibly cross the positioning piece 32 and rotate. When the rotary cover 1 is rotated to the left, the buckle 14 rotates to the left end of the arc groove 33, and the right positioning rib 15 crosses the positioning piece 32 and blocks the positioning piece 32 from rotating right. The left end of the arc groove 33 and the right positioning rib 15 limit the rotation of the rotary cover 1, so that The push head 2 is locked between the locking piece 22 and the guide strip 31 on the left side of the guide groove 21; similarly, when the rotary cover 1 is rotated and the buckle 14 rotates to the right end of the arc groove 33, the left-side positioning rib 15 passes over the positioning piece 32 and blocks the positioning piece 32 from rotating to the left. The rotation of the rotary cover 1 is limited by the left end of the arc groove 33 and the right-side positioning rib 15, so that the push head 2 is locked between the locking piece 22 and the guide strip 31 on the right side of the guide groove 21, thereby preventing the rotary cover 1 from rotating by itself during transportation vibration or touch and releasing the lock between the locking piece 22 and the guide strip 31.

[0028] The matching structure composed of the positioning piece 32, the positioning rib 13, the arc groove 33, the buckle 14 and the positioning rib 15 is evenly arranged in two groups around the circumferential direction, and the matching structure composed of the guide strip 31, the guide groove 21 and the locking piece 22 is evenly arranged in two or four groups around the circumferential direction, so that the rotary cover 1 and the push head 2 can be assembled and used even if they are rotated 180° relative to the base 3, thereby improving the assembly efficiency.

[0029] The rotary cover 1 is clamped on the base 3 through the connection structure of two groups of arc grooves 33 and buckles 14. The built-in buckle assembly structure is simple to assemble and has safe and stable functions.

[0030] The limiting structure includes a limiting groove 23 arranged on the side of the push head 2, and a limiting strip 16 inserted into the limiting groove 23 is provided on the inner side of the cover body 12. The limiting strip 16 can limit the left and right rotation of the limiting groove 23 and allow the limiting groove 23 to move up and down, so that the push head 2 and the rotary cover 1 can rotate together, and the push head 2 can move up and down in the rotary cover 1 to realize the pressing function.

[0031] The aerosol valve comprises a sealing cup 5, an outer gasket 6, a valve stem 7, an inner sealing ring 8, a spring 9, a valve chamber 10 and a straw 101. The sealing cup 5 is installed and connected to the base 3. A fixing cap 51 is provided in the middle of the sealing cup 5. The upper end of the valve chamber 10 is fixed on the inner side of the fixing cap 51. The valve stem 7 is located in the valve chamber 10 and the upper end passes through the top of the fixing cap 51 and is connected to the pressing head 2. The inner sealing ring 8 is sleeved on the outer side of the valve stem 7 and fixed between the upper port of the valve chamber 10 and the fixing cap 51 to seal the upper port of the valve chamber 10. The upper part of the valve stem 7 is hollow and an inlet 71 located below the inner sealing ring 8 is provided on its side. The spring 9 is arranged in the valve chamber 10 to press the valve stem 7 upward. The straw 101 is plugged into the lower end of the valve chamber 10.

[0032] like Figure 5 As shown, when the bidirectional rotating self-locking actuator is installed on a bottle, under the pressure inside the bottle, the contents in the bottle enter the valve chamber through the straw, the valve chamber is filled with the contents, and the cover top of the screw cap is pressed down to press the push head to move the valve stem downward. The inlet on the valve stem moves to below the inner sealing ring, the inlet and the valve chamber are connected, the solution is pressed out into the push head, and the aerosol is sprayed out through the spray nozzle.

Claims

1. A bidirectional rotating self-locking actuator, characterized in that: The invention comprises a rotary cover (1), a pressing head (2), a base (3) and an aerosol valve, wherein the aerosol valve is mounted on the inner side of the base (3), the rotary cover (1) is rotatably connected to the base (3), the pressing head (2) is arranged inside the rotary cover (1) and connected to the aerosol valve, the pressing head (2) is connected to a spray nozzle (4) protruding from the rotary cover (1), the rotary cover (1) comprises a cover top (11) and a cover body (12), a spray nozzle (4) is arranged between the cover body (12) and the pressing head (2) 1) a limiting structure which can rotate with the pressing head (2) when rotating and can enable the pressing head (2) to move up and down relative to the cover body (12); the cover top (11) is made of soft rubber and can deform downward when pressed to push the pressing head (2) to move downward; the side surface of the base (3) is provided with guide strips (31) arranged up and down; the pressing head (2) is provided with guide grooves (21) corresponding to the guide strips (31) up and down so as to allow the pressing head (2) to move up and down relative to the base (3); The push head (2) is provided with locking pieces (22) on the left and right sides of the guide groove (21) respectively, which can be screwed into the top of the guide strip (31) to limit the push head (2) from rotating downward when the push head (2) rotates left and right relative to the base (3); a positioning structure is provided between the base (3) and the rotary cover (1), which can block the rotary cover (1) from rotating when the guide strip (31) corresponds to the guide groove (21) and can be disengaged from the restriction under the action of external force so that the rotary cover (1) can rotate relative to the base (3), wherein the positioning structure comprises a positioning piece (32) arranged on the base (3) and a positioning rib (13) arranged on the inner side of the cover body (12); there are two positioning ribs (13) respectively located on the left and right sides of the positioning piece (32); the upper end of the positioning piece (32) is slightly higher than the lower end of the positioning rib (13) and blocks the positioning rib (13) from rotating left and right; when the rotary cover (1) is rotated by external force, the positioning rib (13) can forcibly pass over the positioning piece (32) and rotate.

2. A bidirectional rotation self-locking actuator according to claim 1, characterized in that: The base (3) is provided with an arc groove (33) on the side surface, and the cover body (12) is provided with a buckle (14) which is inserted into the arc groove (33) and can rotate left and right in the arc groove (33). The left and right ends of the arc groove (33) are closed and used to limit the angle of rotation of the buckle (14) to the left and right. When the guide strip (31) and the guide slot (21) are opposite to each other, the buckle (14) is located in the middle of the arc groove (33). When the buckle (14) rotates to the left end or the right end of the arc groove (33), the guide strip (31) is still located below the locking piece (22).

3. A bidirectional rotation self-locking actuator according to claim 2, characterized in that: On the inner side of the cover body (12), there are respectively provided with a locking rib (15) on the left and right sides of the two positioning ribs (13); the upper end of the positioning piece (32) is slightly higher than the lower end of the locking rib (15) and blocks the locking rib (15) from rotating left and right; when the rotary cover (1) is rotated by an external force, the locking rib (15) can forcibly pass over the positioning piece (32) and rotate; when the buckle (14) rotates to the left end of the arc groove (33), the locking rib (15) on the right side passes over the positioning piece (32) and blocks the positioning piece (32) from rotating rightward; similarly, when the buckle (14) rotates to the right end of the arc groove (33), the locking rib (15) on the left side passes over the positioning piece (32) and blocks the positioning piece (32) from rotating leftward.

4. A bidirectional rotation self-locking actuator according to claim 3, characterized in that: The matching structure composed of the positioning piece (32), the positioning rib (13), the arc groove (33), the buckle (14) and the locking rib (15) is evenly arranged in two groups around the circumferential direction, and the matching structure composed of the guide strip (31), the guide groove (21) and the locking piece (22) is evenly arranged in two or four groups around the circumferential direction.

5. A bidirectional rotation self-locking actuator according to claim 4, characterized in that: The rotary cover (1) is clamped on the base (3) via a connection structure of an arc groove (33) and a buckle (14).

6. A bidirectional rotation self-locking actuator according to claim 1, characterized in that: The limiting structure comprises a limiting groove (23) arranged on the side of the push head (2), and a limiting strip (16) inserted into the limiting groove (23) is provided on the inner side of the cover body (12).

7. A bidirectional rotation self-locking actuator according to claim 1, characterized in that: The aerosol valve comprises a sealing cup (5), an outer gasket (6), a valve stem (7), an inner sealing ring (8), a spring (9), a valve chamber (10) and a straw (101); the sealing cup (5) is mounted and connected to the base (3); a fixing cap (51) is provided in the middle of the sealing cup (5); the upper end of the valve chamber (10) is fixed on the inner side of the fixing cap (51); the valve stem (7) is located in the valve chamber (10) and the upper end thereof is passed through the fixing cap (51) and is in contact with the valve chamber (10). The valve stem (7) is connected with a push-button head (2), the inner sealing ring (8) is sleeved on the outer side of the valve stem (7) and fixed between the upper port of the valve chamber (10) and the fixing cap (51) to seal the upper port of the valve chamber (10), the upper part of the valve stem (7) is hollow and an inlet (71) is provided on its side below the inner sealing ring (8), the spring (9) is provided in the valve chamber (10) to press the valve stem (7) upward, and the suction pipe (101) is plugged into the lower end of the valve chamber (10).

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