Slide rail piece and horizontal-pushing type combined blackboard
By designing the composite slide in the slide rail, using the elastic force of the elastic member to drive the secondary slide backwards, the problem of the difference in front and rear position of the teaching combination blackboard when the dislocation is dispersed, and the flat distribution and aesthetics of the movable blackboard and the fixed blackboard are improved.
Patent Information
- Application Number
- CN202422019898.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-08-20
AI Technical Summary
When the existing teaching combination blackboard is distributed in a misaligned manner, there are differences in front and back positions between the movable blackboard and the fixed blackboard, which affects the aesthetics. When the board surface is not enough, it is inconvenient to cross the board.
A slide rail member is designed, including a slide rail body and a composite slide. The composite slide is composed of a primary slide, a secondary slide and an elastic member. The elastic force of the elastic member drives the secondary slide backward to achieve the same plane as the movable blackboard and the fixed blackboard when dislocation is achieved.
The flat distribution of the movable blackboard and the fixed blackboard when the position is misaligned is realized, which improves the aesthetics of the blackboard and facilitates crossing and writing on the board when the board surface is not enough.
Smart Images
Figure CN223030663U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of teaching blackboards, and particularly relates to a slide rail member and a flat-push combined blackboard. Background Art
[0002] At present, most of the combined blackboards for teaching are composed of two blackboards. One of the blackboards is a fixed blackboard, and the other is a movable blackboard. The movable blackboard is installed in front of the fixed blackboard through a slide rail. At this time, an electronic screen can be installed beside the fixed blackboard. The movable blackboard can be slid left and right under the action of an external force to cover the fixed blackboard (at this time, the electronic screen is exposed) or be misaligned with the fixed blackboard (at this time, the fixed blackboard is exposed, but the electronic screen is covered). However, at this time, there is still a front-back position difference between the fixed blackboard and the movable blackboard even when they are misaligned, which affects the aesthetics of the entire blackboard. At the same time, when the surface of one blackboard is not enough, it is not convenient to write across the boards on the side where the two blackboards are close to each other. Content of the Utility Model
[0003] In order to solve the above technical problems, one of the purposes of the utility model is to provide a slide rail member that can slide left and right and can slide forward and backward by itself at a specific position.
[0004] In order to achieve the above purpose, the technical solution of the utility model is as follows: A slide rail member includes a slide rail body and a composite slider. The composite slider includes a first-stage slider, a second-stage slider, and an elastic member. The slide rail body is horizontally arranged in the left-right direction, and a notch groove is recessed backward at the front upper end thereof. The first-stage slider is slidably installed on the slide rail body in the left-right direction. The second-stage slider is slidably installed on the first-stage slider in the front-back direction. A contact portion that abuts against the front end of the slide rail body is vertically arranged on the second-stage slider. The first-stage slider and the second-stage slider are connected by the elastic member. The elastic force of the elastic member is used to drive the second-stage slider to tend to move backward relative to the first-stage slider. When the first-stage slider slides left and right until the contact portion is aligned with the notch groove, the second-stage slider slides backward under the action of the elastic force of the elastic member until the contact portion enters the notch groove, or the second-stage slider moves forward under the action of an external force until the contact portion exits the notch groove.
[0005] The beneficial effect of the above technical solution is as follows: In this way, the entire composite slider can slide left and right on the slide rail body. However, when the contact portion is aligned with the notch groove during the sliding process, at this time, the second-stage slider moves backward relative to the first-stage slider under the action of the elastic member until the contact portion extends into the notch groove. At this time, the contact portion will limit the composite slider left and right, and at the same time, the second-stage slider still has a margin for backward sliding. When the second-stage slider moves forward under the action of an external force until the contact portion exits the notch groove, at this time, the entire composite slider can slide left and right relative to the slide rail body again.
[0006] In the above technical solution, the slide rail body is a groove-shaped rail with its notch facing upward. A butting strip protrudes upward from the middle of the bottom wall of the groove of the slider body. Two sub-chutes are respectively formed on the slide rail body on the front and rear sides of the butting strip. The notch groove is arranged at the front upper end of the butting strip, and the butting portion abuts against the front end of the butting strip.
[0007] The beneficial effect of the above technical solution is that its structure is simple, and the composite slider is arranged on the slide rail body in a way equivalent to being hung, with good stability and not easy to fall off.
[0008] In the above technical solution, the first-stage slider is an n-shaped block with its notch facing downward, and the groove walls on both sides of the first-stage slider are spaced along the front and rear directions. The groove walls on both sides of the first-stage slider respectively extend into the two sub-chutes and are slidably connected to the slide rail body. The second-stage slider is slidably installed on the upper end of the first-stage slider.
[0009] The beneficial effect of the above technical solution is that its structure is simple, and the groove walls on both sides of the first-stage slider extend into the sub-chutes, so that the whole composite slider is not easy to fall off the slide rail body.
[0010] In the above technical solution, first rollers that are in rolling contact with the corresponding sub-chutes are arranged at the lower ends of the groove walls on both sides of the first-stage slider.
[0011] The beneficial effect of the above technical solution is that in this way, the frictional resistance between the composite slider and the slide rail body is small.
[0012] In the above technical solution, the butting portion includes a pin rod and a pulley. The pin rod is vertically arranged at the lower end of the second-stage slider. The pulley is horizontally arranged and coaxially rotatably installed at the lower end of the pin rod, and the pulley abuts against the front end of the butting strip and slides into the notch groove when aligned with the notch groove.
[0013] The beneficial effect of the above technical solution is that its structure is simple, and the frictional resistance when the butting portion abuts against the slide rail body is small, and when the butting portion is aligned with the notch groove, it can more conveniently extend into the corresponding notch groove.
[0014] In the above technical solution, the elastic member is a spring, and the elastic member is arranged along the front and rear directions. The front end of the elastic member is connected to the butting portion, and the rear end of the elastic member is connected to the first-stage slider.
[0015] The beneficial effect of the above technical solution is that its structure is simple, it occupies little space, and at the same time it has good durability.
[0016] The second object of the present utility model is to provide a push - type combined blackboard with a simple structure, and when the two blackboards slide to a staggered distribution, the movable blackboard can automatically slide backward to be in the same plane as the fixed blackboard.
[0017] To achieve the above object, the technical solution of the present utility model is as follows: A push - type combined blackboard includes two blackboards and the slide rail member as described above. The two blackboards are respectively a fixed blackboard and a movable blackboard. The two blackboards are both vertically arranged along the acting direction. The upper end of the fixed blackboard is fixedly connected to one end of the front side of the slide rail body, and the upper end of the movable blackboard is fixedly connected to the front end of the secondary slider. The notch groove is arranged at one end of the slide rail body far from the fixed blackboard. When the abutting portion exits outside the notch groove, the movable blackboard can slide left - and - right in front of the fixed blackboard. When the abutting portion is aligned with the notch groove, the movable blackboard and the fixed blackboard are distributed in a staggered manner, and under the elastic force of the elastic member, it moves backward with the secondary slider to be flush with the fixed blackboard.
[0018] The beneficial effect of the above - mentioned technical solution is that when the two blackboards move to a staggered position, at this time, the abutting portion is aligned with the notch groove, and the movable blackboard can move backward synchronously with the secondary slider to be flush with the fixed blackboard.
[0019] In the above - mentioned technical solution, both the composite slider and the notch groove are provided with a plurality of them. The plurality of notch grooves are spaced left - and - right at the corresponding end of the slide rail body. The plurality of composite sliders are all spaced along the acting direction on the slide rail body, and the plurality of secondary sliders are all connected to the upper end of the movable blackboard. When the movable blackboard slides left - and - right to be staggered with the fixed blackboard, the plurality of abutting portions are respectively aligned with the corresponding notch grooves, and the movable blackboard moves backward with the plurality of secondary sliders under the elastic force of the plurality of elastic members to be flush with the fixed blackboard.
[0020] The beneficial effect of the above - mentioned technical solution is that in this way, the movable blackboard is installed on the slide rail body through a plurality of composite sliders, so that its installation stability is better.
[0021] In the above - mentioned technical solution, the notch widths at the front ends of the plurality of notch grooves increase successively in the direction from near to far with respect to the fixed blackboard, and the size of one end of each abutting portion far from the secondary slider matches the notch width of the corresponding notch groove.
[0022] The beneficial effect of the above - mentioned technical solution is that in this way, only when each abutting portion is aligned with the corresponding notch groove, the movable blackboard will move backward to be flush with the fixed blackboard.
[0023] In the above - mentioned technical solution, both the notch groove and the composite slider are provided with two.
[0024] The beneficial effects of the above technical solution are as follows: Its structure is simple and its stability is good. Description of the Drawings
[0025] Figure 1 Is the front view of the slide rail member described in Embodiment 1 of the present utility model;
[0026] Figure 2 Is the side view of the slide rail member described in Embodiment 1 of the present utility model;
[0027] Figure 3 Is the front view of the slide rail body described in Embodiment 1 of the present utility model;
[0028] Figure 4 Is the front view of the composite sliding body described in Embodiment 1 of the present utility model;
[0029] Figure 5 Is the bottom view of the composite sliding body described in Embodiment 1 of the present utility model;
[0030] Figure 6 Is the state diagram when the U-shaped seat is separated from the groove rail in Embodiment 1 of the present utility model;
[0031] Figure 7 Is the structural schematic diagram of the cooperation between the second roller and the groove rail when the second roller is arranged in the U-shaped seat groove in Embodiment 1 of the present utility model;
[0032] Figure 8 Is the structural schematic diagram of the cooperation between the second roller and the groove rail when the second roller is arranged outside the U-shaped seat groove in Embodiment 1 of the present utility model;
[0033] Figure 9 Is the front view of the composite sliding body in an inverted state in Embodiment 1 of the present utility model;
[0034] Figure 10 Is the front view when the two blackboards of the flat-push type combined blackboard described in Embodiment 2 of the present utility model are flush;
[0035] Figure 11 Is the front view when the two blackboards of the flat-push type combined blackboard described in Embodiment 2 of the present utility model cover each other front and back;
[0036] Figure 12 Is the front view when two composite sliding bodies are arranged on the slide rail member in Embodiment 2 of the present utility model;
[0037] Figure 13 Is the state diagram when two pulleys are aligned with the corresponding two notch grooves in Embodiment 2 of the present utility model;
[0038] Figure 14This is a state diagram in Embodiment 2 of the present utility model when two pulleys are misaligned with two notch grooves and only a single pulley is aligned with a non-corresponding notch groove.
[0039] In the figure: 1. Slide rail member; 11. Slide rail body; 111. Notch groove; 112. Abutted strip; 1121. Base body; 113. Sub-chute; 114. Limiting strip; 115. Blocking member; 116. Peripheral edge; 12. Composite sliding body; 121. First-stage slider; 1211. Strip-shaped sliding hole; 1212. First roller; 1213. Groove rail; 1214. First hanging ear; 122. Second-stage slider; 1221. U-shaped seat; 1222. Second roller; 123. Elastic member; 124. Abutting portion; 1241. Pin rod; 1242. Pulley; 1243. Second hanging ear; 2a. Fixed blackboard; 2b. Movable blackboard. Detailed implementation manners
[0040] The principles and features of the present utility model will be described below with reference to the accompanying drawings. The examples given are only for explaining the present utility model and are not intended to limit the scope of the present utility model. In the following paragraphs, the present utility model will be described more specifically by way of example with reference to the accompanying drawings. The advantages and features of the present utility model will be clearer according to the following description and the claims. It should be noted that the drawings are all in a very simplified form and use non-precise scales, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present utility model.
[0041] Embodiment 1
[0042] As Figure 1 and Figure 2As shown in the figure, this embodiment provides a slide rail member, including a slide rail body 11 and a composite slider 12. The composite slider 12 includes a first-stage slider 121, a second-stage slider 122, and an elastic member 123. The slide rail body 11 is horizontally arranged in the left-right direction, and a notch groove 111 is recessed backward at the front upper end thereof. The first-stage slider 121 is slidably installed on the slide rail body 11 in the left-right direction. The second-stage slider 122 is slidably installed on the first-stage slider 121 in the front-rear direction. A contact portion 124 that abuts against the front end of the slide rail body 11 is vertically arranged on the second-stage slider 122. The first-stage slider 121 and the second-stage slider 122 are connected by the elastic member 123. The elastic force of the elastic member 123 is used to drive the second-stage slider 122 to tend to move backward relative to the first-stage slider 121. When the first-stage slider 121 slides left and right until the contact portion 124 is aligned with the notch groove 111, the second-stage slider 122 slides backward under the action of the elastic force of the elastic member 123 until the contact portion 124 enters the notch groove 111, or the second-stage slider 122 moves forward under an external force until the contact portion 124 exits the notch groove 111. In this way, the entire composite slider can slide on the slide rail body in the left-right direction. However, when the contact portion is aligned with the notch groove during sliding, at this time, the second-stage slider moves backward relative to the first-stage slider under the action of the elastic member until the contact portion extends into the notch groove. At this time, the contact portion will limit the left and right positions of the composite slider, and at the same time, the second-stage slider still has a margin for backward sliding. When the second-stage slider moves forward under an external force until the contact portion exits the notch groove, at this time, the entire composite slider can slide left and right relative to the slide rail body.
[0043] As Figures 1 - 3 shown in the figure, in the above technical solution, the slide rail body 11 is a channel-shaped rail with its notch facing upward. A contact strip 112 protrudes upward from the middle of the bottom wall of the slider body groove. Two sub-chute grooves 113 are respectively formed on the slide rail body 11 on the front and rear sides of the contact strip 112. The notch groove 111 is arranged at the front upper end of the contact strip 112, and the contact portion 124 abuts against the front end of the contact strip 112. Its structure is simple, and the composite slider is arranged on the slide rail body in a hanging manner, with good stability and not easy to fall off.
[0044] In the above technical solution, the first-stage slider 121 is an n-shaped block with its notch facing downward, and the groove walls on both sides of the first-stage slider 121 are spaced apart in the front-rear direction. The groove walls on both sides of the first-stage slider 121 respectively extend into the two sub-chute grooves 113 and are slidably connected to the slide rail body 11. The second-stage slider 122 is slidably installed on the upper end of the first-stage slider 121. Its structure is simple, and the groove walls on both sides of the first-stage slider extend into the sub-chute grooves, so that the entire composite slider is not easy to fall off the slide rail body.
[0045] In the above technical solution, first rollers 1212 that are in rolling contact with the corresponding sub-chute 113 are provided at the lower ends of the groove walls on both sides of the first-stage slider 121, so that the frictional resistance between the composite slider and the slide rail body is small.
[0046] In this embodiment, a plurality of first rollers 1212 are arranged on the outer side walls on both sides of the first-stage slider 121 in the left-right direction. Limiting strips 114 are formed by slightly turning the edges of both sides of the notch of the slide rail body 11 inward. The upper end of each first roller 1212 abuts against the limiting strip 114, and the lower end of each first roller 1212 abuts against the inner bottom wall of the slide rail body 11. In this way, the two limiting strips 114 jointly limit the first-stage slider 121 in the groove of the slide rail body 11, and the entire composite slider 12 is not easily separated from the notch of the slide rail body.
[0047] As Figure 1 and Figure 3 shown, of course, the abutting strip 112 can be thickened backward at the position of the notch groove 111 to form a seat body 1121, and the notch groove 111 is arranged at the position of the seat body 1121, but there is still a gap for the first-stage slider 121 to slide through (mainly for the first roller 1212 on the first-stage slider to slide through) between the rear end of the seat body 1121 and the inner rear wall of the slide rail body 11. Preferably, the slide rail body can be made of an aluminum alloy profile, so that the entire slide rail body can achieve light weight.
[0048] In the above technical solution, the abutting portion 124 includes a pin rod 1241 and a pulley 1242. The pin rod 1241 is vertically arranged at the lower end of the second-stage slider 122. The pulley 1242 is horizontally arranged and coaxially rotatably installed at the lower end of the pin rod 1241. The pulley 1242 abuts against the front end of the abutting strip 112 and slides into the notch groove 111 when aligned with the notch groove 111. Its structure is simple, the frictional resistance when the abutting portion abuts against the slide rail body is small, and when the abutting portion is aligned with the notch groove, it can more conveniently extend into the corresponding notch groove.
[0049] As Figure 5 shown, in the above technical solution, the elastic member 123 is a spring, and the elastic member 123 is arranged in the front-rear direction. The front end of the elastic member 123 is connected to the abutting portion 124, and the rear end of the elastic member 123 is connected to the first-stage slider 121. Its structure is simple, it occupies little space, and it has good durability.
[0050] As Figure 1 、 Figures 4 - 8As shown in the figure, in this embodiment, a strip-shaped sliding hole 1211 is provided in the upper end of the first-stage slider along the front-back direction. The lower end of the second-stage slider can extend downward through the strip-shaped sliding hole to the lower end of the first-stage slider, and the abutting portion is vertically arranged below the first-stage slider, and its upper end is connected to the lower end of the second-stage slider. Alternatively, the abutting portion can also be vertically arranged and directly penetrate through the strip-shaped sliding hole to the lower part of the first-stage sliding hole.
[0051] Preferably, two strip-shaped sliding holes 1211 are arranged at intervals in the left-right direction at the upper end of the first-stage slider 121. A U-shaped seat 1221 is arranged at the rear lower end of the second-stage slider 122, and the U-shaped seat 1221 is located below the first-stage slider 121. The groove walls on both sides of it extend upward through the two strip-shaped sliding holes 1211 to the upper part of the first-stage slider 121 and are fixedly connected to the rear lower end of the second-stage slider 122. The abutting portion 124 is vertically arranged in the middle of the lower end of the U-shaped seat 1221. The way the second-stage slider 122 is slidably connected to the first-stage slider 121 can be to arrange two groove rails 1213 on the first-stage slider 121, as Figure 7 shown. The two groove rails 1213 can be arranged along the front-back direction on one side where the two strip-shaped sliding holes 1211 are close to each other, and the openings of the two groove rails 1213 face away from each other. Second rollers 1222 extending into the groove rails 1213 are arranged on the inner groove walls on both sides of the U-shaped seat 1221. Of course, it can also be as Figure 8 shown. The two groove rails 1213 can also be arranged on one side where the two strip-shaped sliding holes 1211 are far from each other. At this time, the openings of the two groove rails 1213 are close to each other. At this time, the second rollers 1222 are arranged on the outer groove walls on both sides of the U-shaped seat 1221 and respectively extend into the corresponding groove rails 1213.
[0052] As Figure 2 and Figure 5 shown, a first hanging ear 1214 can be arranged on the inner groove wall at the rear of the first-stage slider 121 corresponding to the exact rear of the abutting portion 124 for connecting the rear end of the elastic member 123. Of course, a second hanging ear 1243 can be arranged on the pin rod 1241 for connecting the front end of the elastic member 123.
[0053] As Figure 2 and Figure 3 shown, the end of the limiting strip in this embodiment can be turned downward to form a surrounding edge 116. A surrounding edge 116 can also be convexly provided on the inner bottom wall of the slide rail body. The surrounding edge 116 on the limiting strip and the corresponding surrounding edge 116 on the inner bottom wall of the slide rail body together enclose a wheel groove, and multiple first rollers on the corresponding side are all located in the wheel groove. In this way, the surrounding edge can limit the first rollers, and at the same time, it can further prevent the composite slider from detaching from the slot opening of the slide rail body.
[0054] As Figure 9 shown, preferably, the front end of the elastic member may also be located within the U-shaped seat and connected to the inner bottom wall of the U-shaped seat (further preferably, the upper end of the pin rod penetrates into the groove of the U-shaped seat and is connected to the front end of the elastic member, that is, the second hanging ear is arranged at the upper end of the pin rod and located within the groove of the U-shaped seat).
[0055] Embodiment 2
[0056] As Figures 10 - 12 shown, this embodiment provides a push-type combined blackboard, including two blackboards and the slide rail member 1 as described above. The two blackboards are respectively a fixed blackboard 2a and a movable blackboard 2b. The two blackboards are both vertically arranged along the acting direction, and the upper end of the fixed blackboard 2a is fixedly connected to one end of the front side of the slide rail body 11. The upper end of the movable blackboard 2b is fixedly connected to the front end of the secondary slider 122. The notch groove 111 is arranged at one end of the slide rail body 11 away from the fixed blackboard 2a. When the abutting portion 124 exits the notch groove 111, the movable blackboard 2b can slide left and right in front of the fixed blackboard 2a. When the abutting portion 124 is aligned with the notch groove 111, the movable blackboard 2b and the fixed blackboard 2a are misaligned, and under the elastic force of the elastic member 123, it moves backward with the secondary slider 122 to be flush with the fixed blackboard 2a. In this way, when the two blackboards move to be misaligned, at this time the abutting portion is aligned with the notch groove, and the movable blackboard can move backward synchronously with the secondary slider to be flush with the fixed blackboard.
[0057] In the above technical solution, a plurality of the composite sliders 12 and notch grooves 111 are provided. The plurality of notch grooves 111 are spaced apart in the left-right direction at the corresponding end of the slide rail body 11. The plurality of composite sliders 12 are all arranged at intervals along the acting direction on the slide rail body 11, and the plurality of secondary sliders 122 are all connected to the upper end of the movable blackboard 2b. When the movable blackboard 2b slides left and right to be misaligned with the fixed blackboard 2a, the plurality of abutting portions 124 are respectively aligned with the corresponding notch grooves 111, and the movable blackboard 2b moves backward with the plurality of secondary sliders 122 under the elastic force of the plurality of elastic members 123 to be flush with the fixed blackboard 2a. In this way, the movable blackboard is installed on the slide rail body through a plurality of composite sliders, so that its installation stability is better.
[0058] As Figures 11 - 14As shown, in the above technical solution, the notch widths at the front ends of the multiple notch grooves 111 increase sequentially in the direction from near to far relative to the fixed blackboard 2a, and the size of one end of each abutting portion 124 away from the secondary slider 122 (i.e., the diameter of the pulley) matches the notch width of the corresponding notch groove 111. In this way, only when each abutting portion is aligned with the corresponding notch groove, the movable blackboard will move backward to be flush with the fixed blackboard. [Taking the composite seat body having two as an example, as Figure 13 shown, only when the two pulleys are aligned with the two notch grooves, the two secondary sliders will slide backward; or as Figure 14 shown, when the movable blackboard slides to half-cover the fixed blackboard, and when only a single abutting portion is aligned with the notch groove close to the fixed blackboard (the abutting portion and the notch groove do not correspond to each other), at this time, since the size of the end of the abutting portion is larger than the width of the notch groove, it will not retract into the notch groove.
[0059] In this embodiment, when the movable blackboard is aligned with the notch groove at the abutting portion and moves backward to be flush with the fixed blackboard, the sides of the fixed blackboard and the movable blackboard that are close to each other are close to each other at this time (there is only a slit-shaped gap between the two, and the gap width is not more than 1 cm, preferably 1-2 mm).
[0060] As Figures 10 - 12 shown, in the above technical solution, there are two notch grooves 111 and two composite sliders 12, and its structure is simple and the stability is good.
[0061] In this embodiment, the two composite sliders are fixedly connected through the movable blackboard, so that the distance between the two composite sliders remains constant.
[0062] In this and the embodiment, the upper end of the movable blackboard can be fixedly connected to the front lower end of the secondary slider. At this time, the upper ends of the fixed blackboard and the movable blackboard can be flush.
[0063] As Figure 12 shown, in this embodiment, blocking members 115 can be provided at both ends of the slide rail body 11 to prevent the composite slider 12 from sliding off the ends of the slide rail body 11. Specifically, the blocking members can be baffles provided at both ends of the slide rail body.
[0064] As Figure 10 shown, the length of the slide rail body can be the sum of the lengths of the two blackboards. At this time, when the two blackboards slide to be flush front and back, the ends of the two blackboards that are far away from each other are also flush with the two ends of the slide rail body.
[0065] In this embodiment, the secondary slider may be a plate body, and its front end extends forward out of the slide rail body through the upper end of the slide rail body to facilitate the installation of the movable blackboard. The height of the upper end of the fixed blackboard is lower than the height of the front lower end of the secondary slider, so that the secondary slider can slide normally above the fixed blackboard.
[0066] The above is only the preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. Any ordinary technician in the industry can smoothly implement the present invention according to the illustrations in the specification and the above description. However, any equivalent changes made by those skilled in the art within the scope of the technical solution of the present invention by using the technical content disclosed above, such as minor modifications, decorations, and evolutions, are equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications, and evolutions made to the above embodiments based on the essence of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims
1. A slide rail member, characterized in that: The invention comprises a slide rail body (11) and a composite slide body (12), wherein the composite slide body (12) comprises a primary slider (121), a secondary slider (122) and an elastic member (123), wherein the slide rail body (11) is horizontally arranged in the left-right direction, and a notch groove (111) is recessed at the front upper end thereof, wherein the primary slider (121) is slidably mounted on the slide rail body (11) in the left-right direction, and the secondary slider (122) is slidably mounted on the primary slider (121) in the front-back direction, and an abutting portion (124) abutting against the front end of the slide rail body (11) is vertically arranged on the secondary slider (122), and the primary slider (121) is ) and the secondary slider (122) are connected via the elastic member (123); the elastic force of the elastic member (123) is used to drive the secondary slider (122) to move backward relative to the primary slider (121); when the primary slider (121) slides left and right until the abutment portion (124) is aligned with the notch groove (111), the secondary slider (122) slides backward to the abutment portion (124) and enters into the notch groove (111) under the action of the elastic force of the elastic member (123); or the secondary slider (122) moves forward to the abutment portion (124) and exits from the notch groove (111) under the action of an external force.
2. The slide rail member according to claim 1, characterized in that: The slide rail body (11) is a groove-shaped rail with a groove opening facing upwards. A contact strip (112) is protruding upwards in the middle of the bottom wall of the groove of the slider body. Two sub-slide grooves (113) are formed on the slide rail body (11) at the front and rear sides of the contact strip (112), respectively. The notch groove (111) is arranged at the front upper end of the contact strip (112), and the contact portion (124) contacts the front end of the contact strip (112).
3. The slide rail member according to claim 2, characterized in that: The first-level slider (121) is an n-shaped block with a notch facing downward, and the groove walls on both sides of the first-level slider (121) are spaced apart in the front-to-back direction. The groove walls on both sides of the first-level slider (121) respectively extend into the two sub-slide grooves (113) and are slidably connected to the slide rail body (11), and the second-level slider (122) is slidably mounted on the upper end of the first-level slider (121).
4. The slide rail member according to claim 3, characterized in that: The lower ends of the groove walls on both sides of the primary sliding block (121) are provided with first rollers (1212) that are in rolling contact with the corresponding sub-sliding grooves (113).
5. The slide rail member according to any one of claims 2 to 4, characterized in that: The abutment portion (124) includes a pin rod (1241) and a pulley (1242), wherein the pin rod (1241) is vertically arranged at the lower end of the secondary slider (122), and the pulley (1242) is horizontally arranged and coaxially rotatably mounted at the lower end of the pin rod (1241), and the pulley (1242) abuts against the front end of the abutment strip (112), and slides into the notch groove (111) when aligned with the notch groove (111).
6. The slide rail member according to any one of claims 2 to 4, characterized in that: The elastic member (123) is a spring, and the elastic member (123) is arranged along the front-to-back direction, the front end of the elastic member (123) is connected to the abutment portion (124), and the rear end of the elastic member (123) is connected to the primary slider (121).
7. A flat push type combined blackboard, characterized in that: The invention comprises two blackboards and a slide rail member (1) as claimed in any one of claims 1 to 6, wherein the two blackboards are respectively a fixed blackboard (2a) and a movable blackboard (2b), and the two blackboards are arranged vertically along the direction of action, and the upper end of the fixed blackboard (2a) is fixedly connected to one end of the front side of the slide rail body (11), and the upper end of the movable blackboard (2b) is fixedly connected to the front end of the secondary slider (122), and the notch groove (111) is arranged on the slide rail body (11) away from the fixed blackboard. At one end of the blackboard (2a), when the abutting portion (124) exits the notch groove (111), the movable blackboard (2b) can slide in the left-right direction in front of the fixed blackboard (2a); when the abutting portion (124) is aligned with the notch groove (111), the movable blackboard (2b) and the fixed blackboard (2a) are staggered and move backwards with the secondary sliding block (122) under the elastic force of the elastic member (123) until they are flush with the fixed blackboard (2a).
8. The horizontal push type combined blackboard according to claim 7 is characterized in that: The composite slide (12) and the notch groove (111) are both provided in plurality, and the notch grooves (111) are spaced apart along the left-right direction at the corresponding ends of the slide rail body (11), and the composite slides (12) are spaced apart along the action direction on the slide rail body (11), and the secondary sliders (122) are connected to the upper end of the movable blackboard (2b). When the movable blackboard (2b) slides along the left-right direction to be dislocated with the fixed blackboard (2a), the abutting portions (124) are respectively aligned with the corresponding notch grooves (111), and the movable blackboard (2b) moves backward with the secondary sliders (122) under the elastic force of the plurality of elastic members (123) to be flush with the fixed blackboard (2a).
9. The horizontal push type combined blackboard according to claim 8, characterized in that: The slot widths at the front ends of the plurality of notched slots (111) increase in sequence from near to far relative to the fixed blackboard (2a), and the dimension of one end of each abutment portion (124) away from the secondary sliding block (122) matches the slot width of the corresponding notched slot (111).
10. The horizontal push type combined blackboard according to claim 8, characterized in that: The notch groove (111) and the composite sliding body (12) are both provided with two.