CN210533204U

CN210533204U - Automatic stretching and winding device for measuring tape

Info

Publication number: CN210533204U
Application number: CN201921958398.4U
Authority: CN
Inventors: 冉金东; 朱锦龙
Original assignee: Quality Assurance Mechanical And Electrical Equipment Kunshan Co Ltd
Current assignee: Quality Assurance Mechanical And Electrical Equipment Kunshan Co Ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-05-15
Anticipated expiration: 2029-11-13

Abstract

The utility model discloses an automatic stretching and winding device of a measuring tape, which comprises a right inner plate and a left inner plate, wherein the right inner plate is arranged on the parallel right side of the left inner plate, a coil spring is connected between the right inner plate and the left inner plate, the traditional left inner plate, the right inner plate and the coil spring are fixedly connected through a single screw rod by improving the connection mode between the left inner plate and the coil spring of the automatic stretching and winding device of the measuring tape, and the three are fixedly connected through an elastic force adjusting device, so that the three can be tightly connected together and the stretching elastic force of the coil spring can be changed through the elastic force adjusting device, thus the elastic force adjusting device can restore the stretching elastic force of the coil spring through adjustment after the coil spring generates elastic failure when the whole measuring tape is used for too long time or is aged, so that the coil spring can maintain certain tensile elasticity to drive the tape measure to be wound.

Description

Automatic stretching and winding device for measuring tape

Technical Field

The utility model belongs to the technical field of the tape measure is relevant, concretely relates to automatic tensile roll-up device of tape measure.

Background

The measuring tape is a commonly used measuring tool in daily life, is one of the necessary tools of family, and Luban chi, geomantic omen chi, the rule belong to the steel tape measure equally, and the steel tape measure is the building and decorates the commonly used instrument, and the steel tape measure can be divided into, from rolling up the formula tape measure, brake formula tape measure, shakes the formula tape measure, and other names of steel tape measure have: steel tape, steel box ruler, the second is the fiber tape, the tape that everyone sees often, many people say the cloth ruler, waist circumference ruler, tailor's ruler (clothing measuring ruler) all belong to this kind, often call the tape measure or draw the chi in our south and hong Kong area, its material is PVC plastics and glass fiber, glass fiber can prevent to be elongated in the use of tape measure, the gift chi is used for the purpose of advertising promotion, divide into steel tape (steel band) and leather tape (PVC plastic fiber tape), usually the molding lovely is smaller and more exquisite.

The existing tape measure automatic stretching and winding device technology has the following problems: the existing automatic stretching and winding device for the tape measure performs winding operation on the tape measure by the reset elasticity generated after a coil spring in the tape measure passes through a compression state, when a user frequently uses the tape measure or the tape measure is aged, the coil spring in the tape measure generates elastic failure, and once the coil spring generates elastic failure, the reset elasticity capable of completely retracting the tape measure ruler can not be provided when the coil spring is in the compression state, so that the other half of the tape measure can stay outside the tape measure shell and cannot be retracted when the coil spring receives one half of the inside of the tape measure shell.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic tensile roll-up device of tape measure to when the user frequently uses the tape measure or the tape measure produces ageing, the inside coil spring of tape measure then can produce the elasticity failure in order to solve and propose among the above-mentioned background art, and in case the coil spring produces the elasticity failure then can not provide the elasticity that resets that can completely withdraw the tape measure ruler when it is in the compression state, the ruler that will cause the tape measure like this will receive the inside half other half of tape measure casing and can stop in the outside problem of tape measure casing through the coil spring.

In order to achieve the above object, the utility model provides a following technical scheme: an automatic stretching and winding device of a measuring tape comprises a right inner plate and a left inner plate, wherein the right inner plate is arranged on the parallel right side of the left inner plate, a coil spring is connected between the right inner plate and the left inner plate, the right inner plate, the coil spring and the left inner plate are fixedly connected through an elastic force adjusting device, a center fixing connecting rod is arranged at the center of the coil spring and fixedly connected with the innermost end of the coil spring through welding, a hexagonal fixing hole is arranged in the transverse inner part of the center fixing connecting rod, movable holes are arranged in the center parts of the right inner plate and the left inner plate, a hexagonal fixing rod is arranged on the elastic force adjusting device and is arranged in the hexagonal fixing hole, the right end of the hexagonal fixing rod is connected with a connecting rod, the rightmost end of the connecting rod penetrates through the movable hole in the right inner plate and is arranged outside the right end of the, the locking screw that the opening left is provided with inside half section of hexagonal dead lever, locking screw internal connection has the locking screw who stretches out left, locking screw passes the inside activity hole of left inner panel and sets up in left inner panel left end outside at the leftmost end, locking screw is connected with regulating block A at the leftmost end, inside and the inside cross adjustment tank that all is provided with of regulating block B right-hand member outer wall of regulating block A left end outer wall.

Preferably, a tape connecting and clamping hole is formed in the inner portion of the outermost end of the coil spring, and the coil spring is fixedly connected with an external tape through the tape connecting and clamping hole.

Preferably, the right side inner panel all is provided with the retainer plate, two on leaning on outside right-hand member outer wall and left inner panel and leaning on outside left end outer wall the horizontal inside of retainer plate is equallyd divide and is do not be provided with the shell fixed orifices that eight equidistance were arranged.

Preferably, the outer walls of the coil springs are flush with the circumferential outer walls of the right inner plate and the left inner plate when the coil springs are not stressed, and the inner walls and the outer walls of each layer of the coil springs are attached together when the coil springs are in a limit compression state.

Preferably, the right inner plate and the left inner plate are parallel to each other after being connected through the elasticity adjusting device, and the inner wall of the left end of the right inner plate and the inner wall of the right end of the left inner plate are smooth walls.

Preferably, the hexagonal fixing holes are regular hexagonal hole-shaped structures, the hexagonal fixing rods are regular hexagonal cylinder structures, and the hexagonal outer walls of the hexagonal fixing rods are uniformly attached to the hexagonal inner walls of the hexagonal fixing holes in a complete mode.

Preferably, the transverse center point of the hexagonal fixing hole is horizontally overlapped with the transverse center point of the coil spring, and the hexagonal fixing hole, the left inner plate, the right inner plate and the transverse center point of the elastic force adjusting device are horizontally overlapped.

Preferably, the right inner plate and the left inner plate are respectively and fixedly connected with a right shell and a left shell of the tape measure through shell fixing holes, and gaps are formed between the left ends and the right ends of the coil springs and the inner walls of the right end and the left end of the left inner plate after the right inner plate and the left inner plate are fixed with the right shell and the left shell of the tape measure.

Compared with the prior art, the utility model provides an automatic tensile roll-up device of tape measure possesses following beneficial effect:

1. the utility model discloses an improve the connected mode between left inner panel and right inner panel and the wind spring of this automatic tensile roll-up device of tape measure, connect traditional left inner panel and right inner panel and wind spring through single screw rod and fix and improve and carry out fixed connection for the three through neotype elasticity adjusting device, and the three can enough make after elasticity adjusting device fixed connection between the three closely connect together and can change the tensile elasticity of wind spring through this elasticity adjusting device again, can make the whole tape measure when the live time is overlength or ageing the coil spring produces elasticity failure after elasticity adjusting and can make the tensile elasticity of wind spring recover through adjusting, make the coil spring can maintain the tensile elasticity of certain intensity to drive the tape measure and roll up, thereby increase the durability and the life of whole tape measure;

2. the utility model discloses a concrete using method and principle are as follows, at first the wind spring will be through the fixed screw respectively left inner panel and right inner panel and the left shell and the right shell fixed connection of tape measure after being centre gripping between them by left inner panel and right inner panel, then through this elasticity adjusting device to wind spring, left inner panel and right inner panel connection fixed, adjusting block A and adjusting block B on the elasticity adjusting device then respectively outside the left shell and right shell of tape measure, and six arris dead lever then fix in the six arris fixed orifices inside the center fixed connecting rod of wind spring center department, and the locking screw on adjusting block A fixes inside the locking screw hole inside the left half section of six arris dead lever, and the connecting rod of connecting on adjusting block B then with six arris dead lever right-hand member connection fixed, like this when whole tape measure causes the elasticity of wind spring to produce the exhaustion because of live time or ageing, at the moment, the coil spring cannot completely drive the tape measure to carry out coiling operation through restoring elasticity due to elasticity failure, so that the resetting elasticity of the coil spring generating the elasticity failure is increased by adjusting the elasticity adjusting device, at the moment, two plum-blossom screwdrivers are respectively inserted into the cross adjusting grooves on the adjusting block A and the adjusting block B by only two hands, then the plum-blossom screwdriver at the end of the adjusting block A is rotated anticlockwise to drive the locking screw to rotate, the locking screw rotates to slowly withdraw from the inside of the locking screw hole through the thread action, so that the length of the elasticity adjusting device is increased, the adjusting block A cannot be tightly locked on the outer wall of the left shell of the tape measure, then the adjusting block A is kept still only through the plum-blossom screwdriver at the left hand, the adjusting block B is driven to rotate anticlockwise through the plum-blossom screwdriver at the right hand, at the moment, the connecting rod rotating anticlockwise drives the hexagonal fixing rod in the hexagonal fixing hole to rotate anticlockwise, and hexagonal dead lever receives the hexagon restriction can drive central fixed link anticlockwise rotation together through hexagonal fixed orifices when anticlockwise rotating, thereby artificial messenger is in the inside internal contraction of coil spring of elasticity failure and makes its elasticity recover, make the elasticity of coil spring this moment can resume original state, then the plum blossom screwdriver of unmoving right hand and the plum blossom screwdriver of the individual clockwise rotation left hand, make locking screw clockwise rotatory through the screw effect and impel towards locking screw inside, can make the coil spring maintain the operation of taking up under the state of being adjusted up until the locking of regulating block A firmly on the outer wall of tape measure left shell.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

fig. 1 is a schematic perspective view of an automatic tape stretching and winding device according to the present invention;

fig. 2 is a schematic diagram of a plane structure of a coil spring according to the present invention;

fig. 3 is a schematic view of a vertical cross-section structure of the automatic tape stretching and winding device of the present invention;

fig. 4 is a schematic view of the overall cross-sectional structure of the elasticity adjusting device of the present invention;

in the figure: 1. a right inner panel; 2. a stationary ring; 3. an elasticity adjusting device; 4. a housing fixing hole; 5. a coil spring; 6. the tape measure is connected with the clamping hole; 7. a left inner panel; 8. a central fixed connecting rod; 9. hexagonal fixing holes; 10. a movable hole; 11. a cross-shaped adjusting groove; 12. an adjusting block A; 13. locking the screw rod; 14. locking the screw hole; 15. six-edge fixing rods; 16. a connecting rod; 17. and a regulating block B.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: an automatic stretching and winding device of a measuring tape comprises a right inner plate 1 and a left inner plate 7, wherein the right inner plate 1 is arranged on the parallel right side of the left inner plate 7, a coil spring 5 is connected between the right inner plate 1 and the left inner plate 7, the right inner plate 1, the coil spring 5 and the left inner plate 7 are fixedly connected through an elastic force adjusting device 3, the right inner plate 1 and the left inner plate 7 are parallel to each other after being connected through the elastic force adjusting device 3, the inner wall of the left end of the right inner plate 1 and the inner wall of the right end of the left inner plate 7 are smooth walls, so that the left inner plate 7 and the right inner plate 1 can be firmly and respectively fixedly connected with a left shell and a right shell of the measuring tape, the left inner plate 7 and the right inner plate 1 can not obstruct the coil spring 5 from normally winding the measuring tape, a center fixing connecting rod 8 is arranged at the center of the, a hexagonal fixing hole 9 is arranged in the transverse inner part of a central fixing connecting rod 8, the transverse central point of the hexagonal fixing hole 9 is horizontally superposed with the transverse central point of a coil spring 5, the hexagonal fixing hole 9 is horizontally superposed with the transverse central points of a left inner plate 7, a right inner plate 1 and an elasticity adjusting device 3, movable holes 10 are arranged in the centers of the right inner plate 1 and the left inner plate 7, a tape connecting and clamping hole 6 is arranged in the outermost end of the coil spring 5, the coil spring 5 is fixedly connected with an external tape through the tape connecting and clamping hole 6, the outer wall of the coil spring 5 is flush with the circumferential outer walls of the right inner plate 1 and the left inner plate 7 when the coil spring 5 is not stressed, the inner and outer walls of each layer of the coil spring 5 are jointed together when the coil spring 5 is in a limit compression state, fixing rings 2 are arranged on the outer wall of the right end close to the outer side of the right inner plate 1 and the outer wall of the left end close to, therefore, the coil spring 5 can be connected with a longer ruler when being folded and unfolded, the measuring length of the ruler is increased, the hexagonal fixing holes 9 are of a regular hexagonal hole-shaped structure, the hexagonal fixing rods 15 are of a regular hexagonal cylinder structure, the hexagonal outer walls of the hexagonal fixing rods 15 can be completely attached to the hexagonal inner walls of the hexagonal fixing holes 9 respectively, when the adjusting block B17 rotates anticlockwise, the connecting rods 16 rotating anticlockwise can drive the hexagonal fixing rods 15 inside the hexagonal fixing holes 9 to rotate anticlockwise, the hexagonal fixing rods 15 are limited by hexagons when rotating anticlockwise and can drive the central fixing connecting rod 8 to rotate anticlockwise through the hexagonal fixing holes 9, so that the interior of the coil spring 5 in elastic failure is artificially contracted inwards to restore the elasticity of the coil spring, the right inner plate 1 and the left inner plate 7 are fixedly connected with the right shell and the left shell of the ruler respectively through the shell fixing holes 4, all there is the clearance between the both ends and the 7 right-hand member inner walls of left inner panel and the right end inner walls of right inner panel and the 1 left end inner walls of right inner panel about the right shell of right inner panel 1 and left inner panel 7 and tape measure and left shell are fixed back coil spring 5, all there is the clearance between coil spring 5 and left inner panel 7 and the right inner panel 1 can make the coil spring 5 can the unimpeded ruler to the tape measure roll-up operation, can make the roll-up effort of coil spring 5 can be more direct on the ruler of tape measure like this, increase roll-up efficiency.

An automatic extension and retraction device of a measuring tape is provided, an elastic force adjusting device 3 is provided with a hexagonal fixed rod 15, the hexagonal fixed rod 15 is arranged inside a hexagonal fixed hole 9, the right end of the hexagonal fixed rod 15 is connected with a connecting rod 16, the rightmost end of the connecting rod 16 passes through a movable hole 10 inside a right inner plate 1 and is arranged outside the right end of the right inner plate 1, the rightmost end of the connecting rod 16 is connected with an adjusting block B17, the left half section of the hexagonal fixed rod 15 is internally provided with a locking screw hole 14 with a left opening, the locking screw hole 14 is internally connected with a locking screw 13 extending leftwards, the leftmost end of the locking screw 13 passes through the movable hole 10 inside the left inner plate 7 and is arranged outside the left end of the left inner plate 7, the leftmost end of the locking screw 13 is connected with an adjusting block A12, the inner part of the outer wall of the left end of the adjusting block A12 and the inner part of the outer wall of the right end, at the moment, two plum blossom screwdrivers are respectively inserted into the cross adjusting grooves 11 on the adjusting block A12 and the adjusting block B17 by two hands, then the plum blossom screwdriver at the end of the adjusting block A12 is rotated anticlockwise to drive the locking screw 13 to rotate, the locking screw 13 can slowly withdraw from the inside of the locking screw hole 14 through the screw thread action when rotating, so that the length of the elastic force adjusting device 3 is increased, the adjusting block A12 cannot be tightly locked on the outer wall of the left shell of the tape measure, then the adjusting block A12 is kept still only by the plum blossom screwdriver of the left hand, the adjusting block B17 is driven to rotate anticlockwise by the plum blossom screwdriver of the right hand, the connecting rod 16 which rotates anticlockwise drives the hexagonal fixing rod 15 in the hexagonal fixing hole 9 to rotate anticlockwise, and the hexagonal fixing rod 15 is limited by a hexagon when rotating anticlockwise, the central fixing connecting rod 8 can be driven to rotate anticlockwise together through the hexagonal fixing hole 9, therefore, the inside of the coil spring 5 in elastic failure is artificially contracted inwards to restore the elasticity of the coil spring 5, so that the elasticity of the coil spring 5 at the moment can be restored to the original state, then the right-hand tulip screwdriver is not moved, and the left-hand tulip screwdriver is singly rotated clockwise, so that the locking screw 13 is rotated clockwise to be pushed towards the inside of the locking screw hole 14 through the thread action, and the coil spring 5 can be wound up under the condition that the adjusting block A12 is firmly locked on the outer wall of the tape measure left shell.

The utility model discloses a theory of operation and use flow: after the utility model is installed, when the automatic stretching and winding device of the tape measure is assembled with the main body part of the tape measure, firstly, the left inner plate 7 needs to be placed inside the left shell of the tape measure and is connected and fixed with the left shell of the tape measure through the screw, then the right inner plate 1 needs to be placed inside the right shell of the tape measure and is connected and fixed with the right shell of the tape measure through the screw, then the measuring scale of the tape measure needs to be connected and fixed with the coil spring 5 through the tape measure connecting and clamping hole 6 on the coil spring 5, then the coil spring 5 is placed between the left inner plate 7 and the right inner plate 1, and the three are firmly connected together through the elasticity adjusting device 3, at the moment, the left shell and the right shell of the tape measure can be mutually attached together through the elasticity adjusting device 3, then, only the left shell and the right shell of the tape measure need to be firmly closed together and fixed through the buckle and, and after the left inner plate 7, the right inner plate 1 and the coil spring 5 are fixedly connected through the elastic force adjusting device 3, the three can be tightly connected together, and the tensile elastic force of the coil spring 5 can be changed through the elastic force adjusting device 3, so that the tensile elastic force of the coil spring 5 can be restored through adjusting the elastic force adjusting device 3 after the coil spring 5 generates elastic failure when the whole measuring tape is used for too long time or is aged, and the coil spring 5 can maintain the tensile elastic force with certain strength to drive the measuring tape to be wound, so that the durability and the service life of the whole measuring tape are improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Automatic tensile roll-up device of tape measure, including right inner panel (1) and left inner panel (7), its characterized in that: the right inner plate (1) is arranged on the parallel right side of the left inner plate (7), a coil spring (5) is connected between the right inner plate (1) and the left inner plate (7), the right inner plate (1), the coil spring (5) and the left inner plate (7) are fixedly connected through an elastic force adjusting device (3), a center fixing connecting rod (8) is arranged at the center of the coil spring (5), the center fixing connecting rod (8) is fixedly connected with the innermost end of the coil spring (5) through welding, a hexagonal fixing hole (9) is formed in the transverse inner portion of the center fixing connecting rod (8), movable holes (10) are formed in the center of the right inner plate (1) and the left inner plate (7), a hexagonal fixing rod (15) is arranged on the elastic force adjusting device (3), the hexagonal fixing rod (15) is arranged in the hexagonal fixing hole (9), and a connecting rod (16) is connected to the right end of the hexagonal fixing rod (15), connecting rod (16) rightmost end passes inside movable hole (10) of right inner panel (1) and sets up in the right-hand member outside of right inner panel (1), connecting rod (16) rightmost end is connected with regulating block B (17), half section inside is provided with opening locking screw (14) to the left in six arris dead lever (15) left side, locking screw (14) internal connection has locking screw (13) that stretch out left, locking screw (13) leftmost end passes inside movable hole (10) of left inner panel (7) and sets up in left inner panel (7) left end outside, locking screw (13) leftmost end is connected with regulating block A (12), inside and the inside cross adjustment tank (11) that all is provided with of regulating block B (17) right-hand member outer wall of regulating block A (12) left end outer wall.

2. An automatic tape measure extending and retracting device according to claim 1, wherein: the outer end of the coil spring (5) is internally provided with a tape connecting and clamping hole (6), and the coil spring (5) is fixedly connected with an external tape through the tape connecting and clamping hole (6).

3. An automatic tape measure extending and retracting device according to claim 1, wherein: right side inner panel (1) leans on the outer side right-hand member outer wall and left inner panel (7) all to be provided with retainer plate (2), two on leaning on the outer side left end outer wall retainer plate (2) horizontal inside is equallyd divide and is provided with shell fixed orifices (4) that eight equidistance were arranged respectively.

4. An automatic tape measure extending and retracting device according to claim 1, wherein: the outer wall of the coil spring (5) is flush with the circumferential outer walls of the right inner plate (1) and the left inner plate (7) when the coil spring (5) is not stressed, and the inner wall and the outer wall of each layer of the coil spring (5) are attached together when the coil spring (5) is in a limit compression state.

5. An automatic tape measure extending and retracting device according to claim 1, wherein: the right inner plate (1) and the left inner plate (7) are parallel to each other after being connected through the elasticity adjusting device (3), and the inner wall of the left end of the right inner plate (1) and the inner wall of the right end of the left inner plate (7) are smooth walls.

6. An automatic tape measure extending and retracting device according to claim 1, wherein: hexagonal fixed orifices (9) are regular hexagon poroid structure, hexagonal dead lever (15) are regular hexagon cylinder structure, the laminating that respectively can be complete is equallyd divide to hexagonal dead lever (15) hexagonal outer wall on the hexagonal inner wall of hexagonal fixed orifices (9).

7. An automatic tape measure extending and retracting device according to claim 1, wherein: the transverse center point of the hexagonal fixing hole (9) is horizontally overlapped with the transverse center point of the coil spring (5), and the hexagonal fixing hole (9), the transverse center points of the left inner plate (7), the right inner plate (1) and the elastic force adjusting device (3) are horizontally overlapped.

8. An automatic tape measure extending and retracting device according to claim 1, wherein: the right inner plate (1) and the left inner plate (7) are fixedly connected with a right shell and a left shell of the tape measure respectively through shell fixing holes (4), and gaps are reserved between the left end and the right end of the right inner plate (1) and the left inner plate (7) and the inner wall of the right end of the left inner plate (7) and the inner wall of the left end of the right inner plate (1) and between the left end of the left coil spring (5) and the left end of the right shell and the inner wall of the left shell of the tape measure.