CN109833046B - Be suitable for magnetic brush of single hand operation - Google Patents
Be suitable for magnetic brush of single hand operation Download PDFInfo
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- CN109833046B CN109833046B CN201910256230.7A CN201910256230A CN109833046B CN 109833046 B CN109833046 B CN 109833046B CN 201910256230 A CN201910256230 A CN 201910256230A CN 109833046 B CN109833046 B CN 109833046B
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- sleeve
- spring
- connecting rod
- magnetic brush
- buckle
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Abstract
The invention discloses a magnetic brush suitable for single-hand operation, which comprises a sleeve, a connecting rod, a permanent magnet, a connecting rod cap, a first spring, a second spring and a rotating buckle, wherein the sleeve is arranged on the sleeve; the sleeve is of a shell structure without a top surface, and the connecting rod is a long round rod and is axially arranged in the sleeve in a sliding manner along the sleeve; the magnetic brush has the beneficial effects that firstly, the internal structure is redesigned, the connecting rod with double spring action is adopted, and the rotary buckle, the sliding groove and the clamping hole are correspondingly added, so that a user can conveniently perform switching operation of powder suction and powder discharge of the magnetic brush by one hand, and the other hand can vacate a light source, a powder bottle and the like; secondly, the spring direction of the traditional magnetic brush is changed, so that the initial position of the connecting rod is positioned at the high position of the sleeve, the powder sucking state can be switched by pressing the connecting rod cap, and the powder returning state can be switched by resetting to the high position of the sleeve under the action of the double springs after the key is pressed.
Description
Technical Field
The invention relates to the technical field of criminal science, in particular to a magnetic brush suitable for one-hand operation.
Background
The powder developing method is a mature method for developing sweat latent fingerprints, has the advantages of convenience in carrying, simplicity in operation, high developing rate and the like, and is widely used in field investigation. The magnetic brush is an important tool for powder developing method, and in the developing operation, the powder sucking state and the powder discharging state of the magnetic brush are required to be switched. However, the existing magnetic brush adopts a structure that a connecting rod is slidably arranged in a sleeve, a strong magnet is arranged at the bottom of the connecting rod, and a compression spring is arranged at the bottom, so that the powder sucking state of the magnetic brush is a state that the connecting rod is positioned at a low position of the sleeve, and therefore, when the magnetic brush is switched to a powder discharging state, a user needs to match with two hands, and the connecting rod is pulled up by the other hand, so that the operation is inconvenient.
Disclosure of Invention
1. Technical problem to be solved
The invention aims to solve the technical problem of providing a magnetic brush suitable for one-hand operation, wherein the powder suction state and the powder discharge state of the magnetic brush can be switched by one hand.
2. Technical proposal
In order to achieve the above object, the technical scheme of the present invention is as follows: a magnetic brush suitable for one-hand operation comprises a sleeve, a connecting rod, a permanent magnet, a connecting rod cap, a first spring, a second spring and a rotary buckle; the sleeve is of a shell structure without a top surface, and the connecting rod is a long round rod and is axially arranged in the sleeve in a sliding manner along the sleeve; the bottom of the connecting rod is provided with a permanent magnet, and the top of the sleeve is provided with a connecting rod cap; the connecting rod and the permanent magnet are connected to form a first flange in a radial outward extending mode, the first spring is sleeved on the connecting rod, and two ends of the first spring are respectively connected with the bottom surface of the first flange and the bottom surface of the inner cavity of the sleeve; the upper part of the connecting rod extends outwards in the radial direction to form a second flange, the top surface of the sleeve extends inwards to form a limit flange, the second spring is sleeved on the connecting rod, and two ends of the second spring are respectively connected with the top surface of the second flange and the bottom surface of the limit flange; the rotary buckle is an L-shaped body, a key hole is formed in the middle upper portion of the peripheral wall of the sleeve, and the rotary buckle penetrates through the key hole; the rotary buckle is close to one end of the connecting rod and is provided with a first clamping hook, a chute matched with the first clamping hook is axially formed in the peripheral wall of the connecting rod, and a clamping hole matched with the first clamping hook and a second clamping hook are formed in the top of the chute.
The magnetic brush suitable for one-hand operation, further comprising a third spring; the third spring is a compression spring, and two ends of the third spring are respectively connected with the rotating buckle and the inner peripheral wall of the sleeve.
The magnetic brush suitable for one-hand operation, wherein the first spring is a compression spring, and the second spring is an extension spring.
The magnetic brush suitable for one-hand operation, wherein the rotary buckle comprises a key and a buckle; the key passes through the key hole; the key is divided into two parts, the two parts are connected through a screw, a groove is formed at the front end of the key, and a rotating shaft is arranged in the groove; the lower end of the buckle is provided with a hinge hole; the rotating shaft is hinged with the hinge hole, and the key and the buckle form an L-shaped body; the first clamping hook is arranged at one side of the upper end of the clamping buckle, which is far away from the key.
The magnetic brush suitable for one-hand operation is characterized in that a limiting shaft is arranged in the groove, and the limiting shaft is positioned at the rear part of the rotating shaft.
The magnetic brush suitable for one-hand operation is characterized in that a spring seat is arranged on the inner side of one end, away from the key, of the buckle, the lower edge of the spring seat is higher than the lower edge of the first clamping hook, and the third spring is clamped on the spring seat.
The magnetic brush suitable for one-hand operation, wherein the lower part of the sleeve is a rotary cavity with narrow upper part and lower part and wide middle part, and the middle part extends outwards along the radial direction to form a supporting part.
The magnetic brush suitable for one-hand operation is characterized in that the sliding groove is connected with the clamping hole by an inclined plane.
The magnetic brush suitable for one-hand operation is characterized in that the rotating shaft and the limiting shaft are of a split structure, and two ends of the rotating shaft and the limiting shaft are respectively connected with the two parts of the key.
The magnetic brush suitable for one-hand operation, wherein the sleeve is divided into two parts along the longitudinal direction and connected in a buckling manner.
3. To sum up
In summary, the beneficial effects of the invention are as follows:
(1) The magnetic brush has the advantages that the internal structure is redesigned, the connecting rod with double spring action is adopted, and the rotary buckle, the sliding groove and the clamping hole are correspondingly added, so that a user can conveniently perform switching operation of powder suction and powder discharge of the magnetic brush by one hand, and the other hand can vacate a light source, a powder bottle and the like;
(2) The invention changes the spring direction of the traditional magnetic brush, so that the initial position of the connecting rod is positioned at the high position of the sleeve, and therefore, the state of sucking powder can be switched by pressing the connecting rod cap, and the state of returning powder can be switched by resetting to the high position of the sleeve under the action of the double springs after pressing the key.
Drawings
Fig. 1 is a schematic view of a magnetic brush adapted for one-handed operation in accordance with the present invention.
Fig. 2 is a cross-sectional view of a magnetic brush of the present invention adapted for single-handed operation.
Fig. 3 is a partial schematic view of a magnetic brush a of the present invention adapted for one-handed operation.
Fig. 4 is a schematic structural view of a magnetic brush rotating buckle suitable for one-hand operation.
Detailed Description
Embodiments of the present invention are further described below with reference to the accompanying drawings.
Referring to fig. 1 to 4, a magnetic brush suitable for one-hand operation comprises a sleeve 1, a connecting rod 2, a permanent magnet 3, a connecting rod cap 4, a first spring 5, a second spring 6 and a rotary buckle 7; the sleeve 1 is of a shell structure without a top surface, and the connecting rod 2 is a long round rod and is axially arranged in the sleeve 1 in a sliding manner along the sleeve 1; the bottom of the connecting rod 2 is provided with a permanent magnet 3, and the top of the sleeve 1 is provided with a connecting rod cap 4; the connecting part of the connecting rod 2 and the permanent magnet 3 extends outwards along the radial direction to form a first flange 201, the first spring 5 is sleeved on the connecting rod 2, and two ends of the first spring are respectively connected with the bottom surface of the first flange 201 and the bottom surface of the inner cavity of the sleeve 1; the middle upper part of the connecting rod 2 extends outwards along the radial direction to form a second flange 202, the top surface of the sleeve 1 extends inwards to form a limit flange 101, the second spring 6 is sleeved on the connecting rod 2, and two ends of the second spring are respectively connected with the top surface of the second flange 202 and the bottom surface of the limit flange 101; the rotary buckle 7 is an L-shaped body, a key hole is formed in the middle upper portion of the peripheral wall of the sleeve 1, and the rotary buckle 7 penetrates through the key hole; the rotary buckle 7 is provided with a first clamping hook 701 near one end of the connecting rod 2, a sliding groove 203 matched with the first clamping hook 701 is axially formed in the peripheral wall of the connecting rod 2, and a clamping hole 204 and a second clamping hook 205 matched with the first clamping hook 701 are formed in the top of the sliding groove 203.
Also comprises a third spring 8; the third spring 8 is a compression spring, two ends of the third spring are respectively connected with the rotating buckle 7 and the inner peripheral wall of the sleeve 1, and the third spring 8 plays a role in resetting the rotating buckle 7.
The first spring 5 is a compression spring, the second spring 6 is an extension spring, and the two springs cooperate to enable the initial position of the connecting rod 2 to be in a high position, and the connecting rod 2 can be helped to reset when the connecting rod 2 is in a low position.
The rotary buckle 7 comprises a key 702 and a buckle 703; the key 702 passes through the key hole; the key 702 is divided into two parts, the two parts are connected through screws, a groove 708 is formed at the front end of the key, and a rotating shaft 706 is arranged in the groove; the lower end of the buckle 703 is provided with a hinge hole 704; the rotating shaft 706 is hinged with the hinge hole 704, and the key 702 and the buckle 703 are formed into an L-shaped body; the first hook 701 is disposed at one side of the upper end of the buckle 703 away from the key 702, and the key 702 is divided into two parts, which are connected by a screw, so that the installation and the disassembly of the key are facilitated.
A limiting shaft 707 is disposed in the groove 708, and the limiting shaft 707 is located at the rear portion of the rotating shaft 706, so as to prevent the buckle 703 from forming an excessive included angle with the key 702 and sliding out of the key hole.
The buckle 703 is kept away from button 702 one end inboard is provided with spring holder 705, the lower edge of spring holder 705 is higher than the lower edge of first pothook 701, the third spring 8 cartridge is in on the spring holder 705, will the third spring 8 chucking is in on the buckle 703, prevent to fall to in the sleeve pipe 1.
The lower part of the sleeve 1 is a rotary cavity 100 with a narrow upper part, a narrow lower part and a wide middle part, the middle part extends outwards along the radial direction to form a supporting part 9, the rotary cavity 100 below the supporting part 9 has magnetism during powder suction, the strong magnet 3 is positioned in the rotary cavity 100 above during powder discharge, and at the moment, the supporting part 9 plays an isolating role to prevent the magnetic powder from being adsorbed on the upper part of the rotary cavity 100.
The chute 203 and the clamping hole 204 are connected by an inclined plane, so that abrupt change of the connection position of the chute 203 and the clamping hole 204 is avoided, and the first clamping hook 701 cannot slide into the clamping hole 204.
The rotation shaft 706 and the limiting shaft 707 are of split structures, two ends of the rotation shaft 706 and the limiting shaft 707 are respectively connected with the two parts of the key 702, and the rotation shaft 706 and the limiting shaft 707 adopt split structures, so that the key 702 can be conveniently disassembled and assembled, and meanwhile the durability of the shaft can be improved.
The sleeve 1 is divided into two parts along the longitudinal direction and is connected in a buckling manner, so that the sleeve is convenient to install and detach.
The using method comprises the following steps:
1. when the magnetic brush is required to be in a powder sucking state, the connecting rod cap 4 is pressed by a thumb, so that the permanent magnet 3 moves downwards along with the connecting rod 2, at the moment, the first clamping hook 701 moves along the sliding groove 203, the connecting rod 2 continues to move downwards, the first clamping hook 701 slides into the clamping hole 204 and is clamped in the clamping hole 204 under the action of the third spring 8, the strong magnet 3 is positioned at the lower end of the rotary cavity 100, and the magnetic powder below the supporting part 9 is adsorbed on the wall of the sleeve 1 under the action of the strong magnet 3, so that powder sucking operation is completed;
2. when the magnetic brush is in a powder discharge state, the key 702 is pressed by an index finger, under the action of the rotating shaft 704 and the tip of the second clamping hook 205, the first clamping hook 701 is separated from the clamping hole 204, the connecting rod 2 moves upwards to an initial high position under the action of the first spring 5 and the second spring 6, after the index finger is loosened, the first clamping hook 701 rebounds to the chute 203 under the action of the third spring 8, at this time, the permanent magnet 3 returns to the upper part of the rotary cavity 100 and is positioned above the supporting part 9, and the magnetic powder positioned below the supporting part 9 falls off from the wall of the sleeve 1 due to the loss of the action of the permanent magnet 3, so that the powder discharge operation is completed.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the content of the present invention or technical fields directly or indirectly attached to other related products are included in the scope of the present invention.
Claims (7)
1. A magnetic brush adapted for single-handed operation, characterized by: comprises a sleeve (1), a connecting rod (2), a permanent magnet (3), a connecting rod cap (4), a first spring (5), a second spring (6) and a rotary buckle (7); the sleeve (1) is of a shell structure without a top surface, and the connecting rod (2) is a long round rod and is arranged in the sleeve (1) in an axial sliding way along the sleeve (1); a permanent magnet (3) is arranged at the bottom of the connecting rod (2), and a connecting rod cap (4) is arranged at the top of the sleeve (1); the connecting rod (2) and the permanent magnet (3) are connected to extend outwards in the radial direction to form a first flange (201), the first spring (5) is sleeved on the connecting rod (2), and two ends of the first spring are respectively connected with the bottom surface of the first flange (201) and the bottom surface of the inner cavity of the sleeve (1); the middle and upper parts of the connecting rods (2) extend outwards along the radial direction to form a second flange (202), the top surface of the sleeve (1) extends inwards to form a limit flange (101), the second springs (6) are sleeved on the connecting rods (2), and two ends of the second springs are respectively connected with the top surface of the second flange (202) and the bottom surface of the limit flange (101); the rotary buckle (7) is an L-shaped body, a key hole is formed in the middle upper portion of the peripheral wall of the sleeve (1), and the rotary buckle (7) penetrates through the key hole; the rotary buckle (7) is provided with a first clamping hook (701) close to one end of the connecting rod (2), a chute (203) matched with the first clamping hook (701) is axially formed in the peripheral wall of the connecting rod (2), a clamping hole (204) and a second clamping hook (205) matched with the first clamping hook (701) are formed in the top of the chute (203), and the rotary buckle further comprises a third spring (8); the third spring (8) is a compression spring, two ends of the third spring are respectively connected with the rotating buckle (7) and the inner peripheral wall of the sleeve (1), the first spring (5) is a compression spring, the second spring (6) is an extension spring, the two springs are combined to enable the initial position of the connecting rod to be in a high position, and the rotating buckle (7) comprises a key (702) and a buckle (703); the key (702) passes through the key hole; the key (702) is divided into two parts, the two parts are connected through a screw, a groove (708) is formed at the front end of the key, and a rotating shaft (706) is arranged in the groove (708); a hinge hole (704) is formed in the lower end of the buckle (703); the rotating shaft (706) is hinged with the hinge hole (704), and the key (702) and the buckle (703) form an L-shaped body; the first clamping hook (701) is arranged at one side, far away from the key (702), of the upper end of the buckle (703).
2. A magnetic brush adapted for single-handed operation as claimed in claim 1, wherein: a limiting shaft (707) is arranged in the groove (708), and the limiting shaft (707) is located at the rear part of the rotating shaft (706).
3. A magnetic brush adapted for single-handed operation as claimed in claim 2, wherein: the buckle (703) is far away from the inner side of one end of the key (702) is provided with a spring seat (705), the lower edge of the spring seat (705) is higher than the lower edge of the first clamping hook (701), and the third spring (8) is clamped on the spring seat (705).
4. A magnetic brush adapted for single handed operation as claimed in claim 3 wherein: the lower part of the sleeve (1) is a rotary cavity (100) with narrow upper part, narrow lower part and wide middle part, and the middle part extends outwards along the radial direction to form a supporting part (9).
5. A magnetic brush adapted for single-handed operation as claimed in claim 4, wherein: the chute (203) is connected with the clamping hole (204) by an inclined plane.
6. A magnetic brush adapted for single-handed operation as claimed in claim 5, wherein: the second flange (202) is larger in size than the limit flange (101).
7. A magnetic brush adapted for single-handed operation as claimed in claim 6, wherein: the sleeve (1) is divided into two parts along the longitudinal direction for buckling connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910256230.7A CN109833046B (en) | 2019-04-01 | 2019-04-01 | Be suitable for magnetic brush of single hand operation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910256230.7A CN109833046B (en) | 2019-04-01 | 2019-04-01 | Be suitable for magnetic brush of single hand operation |
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| Publication Number | Publication Date |
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| CN109833046A CN109833046A (en) | 2019-06-04 |
| CN109833046B true CN109833046B (en) | 2023-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910256230.7A Active CN109833046B (en) | 2019-04-01 | 2019-04-01 | Be suitable for magnetic brush of single hand operation |
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| CN112957163A (en) * | 2021-02-01 | 2021-06-15 | 吴文强 | Magnetic extractor for internal instrument and ureteral stent assembly |
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