CN110549770B - Vertical face is gone up supplementary writing instrument of chalk blackboard writing - Google Patents
Vertical face is gone up supplementary writing instrument of chalk blackboard writing Download PDFInfo
- Publication number
- CN110549770B CN110549770B CN201910834591.5A CN201910834591A CN110549770B CN 110549770 B CN110549770 B CN 110549770B CN 201910834591 A CN201910834591 A CN 201910834591A CN 110549770 B CN110549770 B CN 110549770B
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- chalk
- writing
- groove
- support
- pen
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K23/00—Holders or connectors for writing implements; Means for protecting the writing-points
- B43K23/016—Holders for crayons or chalks
Abstract
A blackboard writing auxiliary writing tool for chalk on a vertical surface comprises a chalk rod piece, wherein the chalk rod piece comprises a writing end part and a pen supplementing end part, a chalk hole is formed in the writing end part along the axis, a pen supplementing through groove is formed in one side, opposite to the pen supplementing end part, of the chalk hole along the radial direction, the shape and the size of the chalk hole and the pen supplementing through groove are matched with those of chalk, chalk enters the chalk hole through the pen supplementing through groove, and the chalk moves to the writing end part to be in contact with a blackboard; the chalk rod piece is provided with a tiger mouth groove and a middle finger groove on the outer peripheral surface, the tiger mouth groove is arc-shaped and comprises a thumb end and a forefinger end, the middle finger groove is arranged between the tiger mouth groove and the writing end part and is communicated with the tiger mouth groove, and a holding strip is arranged at the communication position; the chalk discharging device is characterized in that a wheel groove is formed between the thumb end and the writing end, a chalk discharging roller is arranged in the wheel groove in a rotating mode, the chalk discharging roller comprises an operation end portion extending to the peripheral surface of the chalk rod piece and a connecting end portion extending to the chalk hole and embedded into the chalk body, and the thumb drives the chalk discharging roller to rotate to extrude chalk towards the writing end.
Description
Technical Field
The invention relates to the field of chalk writing tools, in particular to an auxiliary writing tool for writing on a blackboard by chalk on a vertical surface.
Background
The blackboard is written by using chalks, is the most frequent teaching mode for teachers, particularly in remote poor areas, and the blackboard and the chalks are the most main teaching tools for teachers.
Because the blackboard is vertically arranged on the wall surface, a teacher can only frequently lift up the arm, the fingers grasp fine chalks and suspend in the air to write on the blackboard, and under the condition of no relay, the teacher can only support the whole arm for long-time writing by the aid of the strength of the shoulder and the finger parts, and under the condition, the teacher is long-term and tired, and often suffers from occupational diseases such as scapulohumeral periarthritis and the like, so that the arm cannot be raised. Furthermore, the chalk is often held tightly, and the hand muscle diseases are caused because the hand is unbalanced in force because the chalk is held by only using the thumb, the index finger and the middle finger, and the ring finger and the little finger do not apply force.
Disclosure of Invention
The invention provides an auxiliary writing tool for eliminating fatigue and injury of muscles of fingers and shoulders when a hand-held chalk is used for writing on a blackboard. The technical scheme of the invention is as follows: a blackboard writing auxiliary writing tool for chalk on a vertical surface comprises a chalk rod piece, wherein the chalk rod piece comprises a writing end part and a pen supplementing end part, a chalk hole is formed in the writing end part along the axis, a pen supplementing through groove is formed in one side, opposite to the pen supplementing end part, of the chalk hole along the radial direction, the shape and the size of the chalk hole and the pen supplementing through groove are matched with those of chalk, chalk enters the chalk hole through the pen supplementing through groove, and the chalk moves to the writing end part to be in contact with a blackboard; the chalk rod piece is provided with a tiger mouth groove and a middle finger groove on the outer peripheral surface, the tiger mouth groove is arc-shaped and comprises a thumb end and a forefinger end, the middle finger groove is arranged between the tiger mouth groove and the writing end and is communicated with the tiger mouth groove, and a holding strip is arranged at the communication position; the chalk box is characterized in that a wheel groove is formed between the thumb end and the writing end, the wheel groove penetrates into the chalk hole from the outer peripheral face of the chalk rod piece, a pen outlet roller is arranged in the wheel groove in a rotating mode, the pen outlet roller comprises an operation end portion extending to the outer peripheral face of the chalk rod piece and a connecting end portion extending into the chalk hole and embedded into a chalk body, and the thumb drives the pen outlet roller to rotate to extrude chalk towards the writing end portion.
By adopting the technical scheme, the chalk holding posture in the past is changed through the tiger mouth groove, the middle finger groove and the holding strip which are arranged on the outer peripheral surface of the chalk rod piece, the chalk rod piece is erected at the tiger mouth position of the hand, the thumb and the forefinger of a person respectively enter the thumb end and the index finger end of the tiger mouth groove along the two sides of the outer peripheral surface of the rod piece to be clamped, then the chalk rod piece is erected on the middle finger of the hand through the arranged middle finger groove, and the holding strip which is arranged between the tiger mouth groove and the middle finger groove can be used for holding the curled middle finger, ring finger, little finger and palm in a surrounding manner. The posture of gripping that sets up like this compares traditional holding posture, and its advantage lies in: 1. the hands can be relaxed, and the chalk is not grasped like a claw beak in the past, so that the holding is easier, and muscle ache caused by tension is avoided. 2. The plurality of holding points share the force application, particularly the arrangement of the holding strips, so that the ring finger and the little finger which have no effect in the past holding posture also provide the force, the hand can exert the force integrally, and the fatigue caused by the local force-exerting posture is avoided. And the hand is embedded into the tiger mouth groove and the middle finger groove, so that the contact area is larger, and the stress concentration of the hand is avoided.
Through setting up the setting that chalk hole, supplementary pen led to the groove for chalk consumption compensation is more convenient, and through the setting of a gyro wheel, when the hand held the chalk member, through the activity of thumb, the drive goes out a gyro wheel rotatory, and the tip is write through the contact with the chalk to the tip of connecting end portion that goes out a gyro wheel, extrudes the chalk.
The invention further comprises the following steps: the writing tool also comprises an elbow supporting piece, the elbow supporting piece comprises a waistband, a side rib support, a shoulder elbow support plate, a supporting rod and a hinge seat, the waistband is tied to the waist, and the side rib support comprises a fixed end fixedly connected with the waistband and a hinge end extending to the underarm part; the shoulder elbow support plate is in hinged fit with the hinged end of the side rib support and comprises a positioning end face facing the side rib support and a supporting end face facing the arm, an arm binding belt is arranged on the supporting end face, and a plurality of positioning grooves are formed in the positioning end face; articulated seat sets up in the relatively stiff end one side of side rib support, bracing piece one end is articulated to be cooperated with articulated seat, and the other end extends to the armpit position between shoulder elbow extension board and the side rib support.
Adopt above-mentioned technical scheme, through the waistband that sets up, it supports to the side rib support by waist nuclear myocardium crowd, the shoulder elbow extension board is through binding with the arm respectively, it is articulated with the side rib support, can be nimble freely the arm lift up or put down, when the arm lifts up and is horizontal gesture, when needing to write, through the location terminal surface of the relative side rib support of operating support pole swing to the shoulder elbow extension board, with a certain constant head tank block, vertical side rib support, horizontal shoulder elbow extension board, the bracing piece of hypotenuse has formed triangular support jointly, the unsettled required strength of arm, no longer the shoulder provides, but borrow by triangular support, shift to waist core muscle crowd and support. The axial part support piece that sets up like this can correct the gesture of wearing person's chalk blackboard writing time, shares shoulder pressure, provides the support for unsettled arm, and the stable gesture of writing reduces the degree of difficulty of blackboard writing.
The invention further comprises the following steps: the elbow support piece is characterized in that a slide rail in the vertical direction is arranged on one side of the fixed end of the side rib support, a limiting plate is arranged at the bottom of the slide rail in the vertical direction, the hinge seat is arranged in the slide rail and is in sliding fit in the vertical direction, and the elbow support piece further comprises a damping spring which is arranged between the limiting plate and the hinge seat.
Adopt above-mentioned technical scheme, during the board writing, the arm has certain degree action, for example the removal of vertical direction, and through the damping spring who sets up and the articulated seat that slides, the shoulder elbow extension board no longer is by fixed dead, but can have the damped vertical direction activity of carrying on, comfort level and the degree of freedom of the vertical direction of arm when having passed through and writing.
The invention further comprises the following steps: elbow support piece still includes horizontal slide, the support terminal surface of shoulder elbow support piece is equipped with the horizontal direction spout, the arm bandage sets up on horizontal slide, and this horizontal slide sets up and is horizontal direction sliding fit in the spout.
By adopting the technical scheme, the horizontal sliding seat slides left and right relative to the shoulder elbow supporting plate, so that the arm obtains the degree of freedom in the horizontal direction, and the vertical direction is not influenced to drive the shoulder elbow supporting plate to move.
The invention further comprises the following steps: the shoulder elbow supporting plate is in a right-angled triangle shape, the positioning end face of the shoulder elbow supporting plate is a hypotenuse opposite to the right angle, and the thickness of the end portion, far away from the side rib support relatively, of the shoulder elbow supporting plate is larger than that of the end portion, close to the side rib support relatively.
Adopt above-mentioned technical scheme, when the bracing piece swung, probably because length is not enough, the contact can not reach the shoulder elbow extension board, through setting the shoulder elbow extension board into right triangle, guaranteed that the swing of bracing piece can contact the location terminal surface.
The invention further comprises the following steps: and silica gel cushions are laid on the tiger mouth groove, the middle finger groove and the holding strip of the chalk rod piece.
Adopt above-mentioned technical scheme, through the silica gel bed course that sets up, guarantee the comfort level that grips, avoid hand friction strain.
The invention further comprises the following steps: and the writing end part of the chalk rod piece is provided with a dust-raising-proof cover around the chalk hole.
By adopting the technical scheme, dust is prevented from flying when the chalk is used for writing, and the chalk dust is covered.
Drawings
FIG. 1 is a structural view of a chalk holder of an embodiment of the invention 1;
FIG. 2 is a structural view of a chalk holder member of an embodiment of the invention 2;
FIG. 3 is a structural view of a chalk holder of an embodiment of the invention 3;
FIG. 4 is a cross-sectional view of embodiment 1 of the present invention;
FIG. 5 is a cross-sectional view of embodiment 2 of the present invention;
FIG. 6 is a block diagram of an elbow support of an embodiment of the present invention, as shown in FIG. 1;
FIG. 7 is a view of an elbow support of an embodiment of the present invention as set forth in FIG. 2;
figure 8 is an exploded view of an elbow support according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1-8, an auxiliary writing tool for writing on a blackboard with chalk 2 on a vertical surface comprises a chalk rod member 1, wherein the chalk rod member 1 comprises a writing end part 11 and a pen supplementing end part 12, a chalk hole 13 is formed in the writing end part 11 along the axis, a pen supplementing through groove 14 is radially formed in one side, opposite to the pen supplementing end part 12, of the chalk hole 13, the shape and the size of the chalk hole 13 and the pen supplementing through groove 14 are matched with those of the chalk 2, and the chalk 2 enters the chalk hole 13 through the pen supplementing through groove 14 and moves until the writing end part 11 is contacted with a blackboard; the chalk rod piece 1 is provided with a tiger mouth groove 15 and a middle finger groove 16 on the peripheral surface, the tiger mouth groove 15 is arc-shaped and comprises a thumb end 151 and a forefinger end 152, the middle finger groove 16 is arranged between the tiger mouth groove 15 and the writing end part 11 and communicated with the tiger mouth groove 15, and a holding strip 17 is arranged at the communication position; a wheel groove 18 is arranged between the thumb end 151 and the writing end 11, the wheel groove 18 penetrates into the chalk hole 13 from the outer peripheral surface of the chalk rod member 1, a pen outlet roller 3 is rotationally arranged in the wheel groove 18, the pen outlet roller 3 comprises an operation end 31 extending to the outer peripheral surface of the chalk rod member 1 and a connecting end 32 extending into the chalk hole 13 and embedded with a chalk body 2, and a thumb drives the pen outlet roller 3 to rotate to extrude the chalk 2 to the writing end 11.
The posture of holding the chalk 2 in the past is changed by the tiger mouth groove 15, the middle finger groove 16 and the holding strip 17 arranged on the outer peripheral surface of the chalk rod piece 1, the tiger mouth groove 15 is arranged, the chalk rod piece 1 is erected at the tiger mouth position of the hand, the thumb and the forefinger of a person respectively enter the thumb end 151 and the forefinger end 152 of the tiger mouth groove 15 along the two sides of the outer peripheral surface of the rod piece to be clamped, then the chalk rod piece is erected on the middle finger of the hand through the arranged middle finger groove 16, and the holding strip 17 arranged between the tiger mouth groove 15 and the middle finger groove 16 can be used for holding the curled middle finger, ring finger, little finger and palm in a surrounding manner. The posture of gripping that sets up like this compares traditional holding posture, and its advantage lies in: 1. the hands can be relaxed, and the chalk 2 is not grasped like a claw beak in the past, so that the holding is easier, and muscle ache caused by tension is avoided. 2. The plurality of holding points share the force application, particularly the arrangement of the holding strip 17, so that the ring finger and the little finger which have no effect in the past holding posture also provide the force, the hand can exert the force integrally, and the fatigue caused by the local force-exerting posture is avoided. And the hand is embedded into the tiger mouth groove 15 and the middle finger groove 16, so that the contact area is larger, and the stress concentration of the hand is avoided.
Through setting up chalk hole 13, the logical setting of groove 14 is led to in the benefit of the pen for 2 consumption compensations of chalk are more convenient, and through the setting of a gyro wheel 3, when the chalk member 1 is held to the hand, through the activity of thumb, the drive goes out a gyro wheel 3 and rotates, goes out the connecting end portion 32 of a gyro wheel 3 through the contact with chalk 2, extrudes chalk 2 and writes tip 11.
The writing tool further comprises an elbow support member, the elbow support member comprises a waist belt 51, a side rib bracket 52, a shoulder elbow support plate 53, a support rod 54 and a hinge seat 55, the waist belt 51 is tied at the waist, the side rib bracket 52 comprises a fixed end 521 fixedly connected with the waist belt 51 and a hinge end 522 extending to the armpit part; the shoulder elbow support plate 53 is in hinged fit with the hinged end 522 of the side rib support 52 and comprises a positioning end surface 531 facing the side rib support 52 and a supporting end surface 532 facing the arm, the supporting end surface 532 is provided with an arm binding band 533, and the positioning end surface 531 is provided with a plurality of positioning grooves; the hinged seat 55 is arranged on one side of the relatively fixed end 521 of the side rib bracket 52, one end of the support rod 54 is hinged and matched with the hinged seat 55, and the other end extends to the armpit part between the shoulder elbow support plate 53 and the side rib bracket 52.
Through the waistband 51 that sets up, by the support of lumbar nucleus cardiac muscle crowd to side rib support 52, shoulder elbow extension board 53 through binding with the arm respectively, articulated with side rib support 52, can be nimble freely the arm lift up or put down, when the arm lifts up and is horizontal gesture, when needing to write, through the location terminal surface 531 that the relative side rib support 52 of operating support 54 swung to shoulder elbow extension board 53, with a certain constant head tank block, vertical side rib support 52, horizontal shoulder elbow extension board 53, the bracing piece 54 of hypotenuse has formed the triangular supports jointly, the unsettled required strength of arm, no longer the shoulder provides, but borrow the triangular supports, shift to lumbar nucleus cardiac muscle crowd and support. The axial region support piece that sets up like this can correct the gesture of wearing person's chalk 2 blackboard writing, shares shoulder pressure, for unsettled arm provides the support, stabilizes the gesture of writing, reduces the degree of difficulty of blackboard writing.
The fixed end 521 one side of side rib support 52 is equipped with the slide rail 525 of vertical direction, and the bottom of this slide rail 525 relative vertical direction is equipped with limiting plate 526, articulated seat 55 sets up and is vertical direction sliding fit in slide rail 525, elbow support piece still includes damping spring 7, and this damping spring 7 sets up between limiting plate 526 and articulated seat 55.
When writing on a blackboard, the arm can move to a certain degree, for example, the arm moves in the vertical direction, and through the damping spring 7 and the sliding hinge seat 55, the shoulder elbow support plate 53 is not fixed, but can move in the vertical direction in a damping manner, so that the comfort degree during writing and the degree of freedom in the vertical direction of the arm are realized.
The elbow support further comprises a horizontal sliding seat 56, a horizontal sliding groove 534 is formed in the supporting end face 532 of the shoulder elbow support plate 53, the arm strap 533 is arranged on the horizontal sliding seat 56, and the horizontal sliding seat 56 is arranged in the sliding groove 534 and is in sliding fit in the horizontal direction.
The horizontal sliding seat 56 slides left and right relative to the shoulder-elbow support plate 53, so that the arm obtains the degree of freedom in the horizontal direction, and the vertical direction is not influenced to drive the shoulder-elbow support plate 53 to move.
The shoulder elbow plate 53 is in the shape of a right triangle, the positioning end surface 531 is the hypotenuse of the right angle, and the thickness of the end of the shoulder elbow plate 53 relatively far away from the side rib bracket 52 is larger than that of the end relatively close to the side rib bracket 52.
When the support rod 54 swings, the shoulder-elbow plate 53 may not be contacted because of insufficient length, and by arranging the shoulder-elbow plate 53 in a right triangle, it is ensured that the swing of the support rod 54 can contact the positioning end surface 531.
Silica gel cushions are laid on the tiger mouth groove 15, the middle finger groove 16 and the holding strip 17 of the chalk rod piece 1.
Through the silica gel bed course that sets up, the comfort level of guaranteeing to grip avoids hand friction strain.
The writing end 11 of the chalk rod 1 is provided with a dust-proof cover 8 around the chalk hole 13.
The dust raising during the writing of the chalk 2 is avoided, and the 2 scraps of the chalk are covered.
Claims (4)
1. The utility model provides a vertical face is gone up supplementary writing instrument of chalk blackboard writing which characterized in that: the chalk rod comprises a chalk rod piece, the chalk rod piece comprises a writing end part and a pen supplementing end part, a chalk hole is formed in the writing end part along the axis, a pen supplementing through groove is formed in one side, opposite to the pen supplementing end part, of the chalk hole along the radial direction, the shape and the size of the chalk hole and the pen supplementing through groove are matched with that of chalk, the chalk enters the chalk hole through the pen supplementing through groove and moves to the writing end part to be in contact with a blackboard; the chalk rod piece is provided with a tiger mouth groove and a middle finger groove on the outer peripheral surface, the tiger mouth groove is arc-shaped and comprises a thumb end and a forefinger end, the middle finger groove is arranged between the tiger mouth groove and the writing end and is communicated with the tiger mouth groove, and a holding strip is arranged at the communication position; a wheel groove is formed between the thumb end and the writing end, the wheel groove penetrates into the chalk hole from the outer peripheral surface of the chalk rod piece, a pen discharging roller is rotationally arranged in the wheel groove, the pen discharging roller comprises an operation end portion extending to the outer peripheral surface of the chalk rod piece and a connecting end portion extending into the chalk hole and embedded into a chalk body, and a thumb drives the pen discharging roller to rotate to extrude chalk to the writing end;
the writing tool also comprises an elbow supporting piece, the elbow supporting piece comprises a waistband, a side rib support, a shoulder elbow support plate, a supporting rod and a hinge seat, the waistband is tied to the waist, and the side rib support comprises a fixed end fixedly connected with the waistband and a hinge end extending to the underarm part; the shoulder elbow support plate is in hinged fit with the hinged end of the side rib support and comprises a positioning end face facing the side rib support and a supporting end face facing the arm, an arm binding belt is arranged on the supporting end face, and a plurality of positioning grooves are formed in the positioning end face; the hinge seat is arranged on one side of the opposite fixed end of the side rib support, one end of the support rod is in hinge fit with the hinge seat, and the other end of the support rod extends to the armpit part between the shoulder elbow support plate and the side rib support;
the elbow support piece comprises a side rib support and an elbow support, wherein a sliding rail in the vertical direction is arranged on one side of the fixed end of the side rib support, a limiting plate is arranged at the bottom of the sliding rail in the vertical direction, the hinge seat is arranged in the sliding rail and is in sliding fit in the vertical direction, and the elbow support piece further comprises a damping spring which is arranged between the limiting plate and the hinge seat;
elbow support piece still includes horizontal slide, the support terminal surface of shoulder elbow support piece is equipped with the horizontal direction spout, the arm bandage sets up on horizontal slide, and this horizontal slide sets up and is horizontal direction sliding fit in the spout.
2. A vertical surface chalk writing board assistant writing tool according to claim 1, characterized in that: the shoulder elbow supporting plate is in a right-angled triangle shape, the positioning end face of the shoulder elbow supporting plate is a hypotenuse opposite to the right angle, and the thickness of the end portion, far away from the side rib support relatively, of the shoulder elbow supporting plate is larger than that of the end portion, close to the side rib support relatively.
3. A vertical surface chalk writing board assistant writing tool according to any one of claims 1 or 2, characterized in that: and silica gel cushions are laid on the tiger mouth groove, the middle finger groove and the holding strip of the chalk rod piece.
4. A vertical surface chalk writing board assistant writing tool according to claim 3, characterized in that: and the writing end part of the chalk rod piece is provided with a dust-raising-proof cover around the chalk hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910834591.5A CN110549770B (en) | 2019-09-05 | 2019-09-05 | Vertical face is gone up supplementary writing instrument of chalk blackboard writing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910834591.5A CN110549770B (en) | 2019-09-05 | 2019-09-05 | Vertical face is gone up supplementary writing instrument of chalk blackboard writing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110549770A CN110549770A (en) | 2019-12-10 |
| CN110549770B true CN110549770B (en) | 2021-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910834591.5A Active CN110549770B (en) | 2019-09-05 | 2019-09-05 | Vertical face is gone up supplementary writing instrument of chalk blackboard writing |
Country Status (1)
| Country | Link |
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| CN (1) | CN110549770B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111688388B (en) * | 2020-05-20 | 2021-04-16 | 南京掌学在线信息科技有限公司 | Vertical surface chalk blackboard writing auxiliary writing device and method thereof |
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| US4957442A (en) * | 1989-10-24 | 1990-09-18 | Prater Stephen J | Apparatus and method for assisting a disabled person to hand write with a writing instrument |
| CA2697600C (en) * | 2007-08-30 | 2017-03-14 | Garrett W. Brown | Articulated human arm support |
| CN202439453U (en) * | 2012-02-24 | 2012-09-19 | 谭秀巧 | Middle school Chinese teaching blackboard-writing assistant device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101909555A (en) * | 2008-01-23 | 2010-12-08 | 奥托·博克保健有限公司 | Arm abduction orthotic |
| CN203953911U (en) * | 2014-06-13 | 2014-11-26 | 张秀英 | Hanging type arm bracket |
| CN204432071U (en) * | 2014-12-29 | 2015-07-01 | 李丽 | Hold and hold formula chalk pen |
| CN106183543A (en) * | 2015-05-27 | 2016-12-07 | 蔡瑞 | A kind of grip type pen holding posture corrector with scalable handle |
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| CN110549770A (en) | 2019-12-10 |
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