CN203493149U - Lifting blackboard - Google Patents

Abstract

The utility model discloses a lifting blackboard which comprises a base, supports, a blackboard body, upper connecting rods and lower connecting rods. The upper connecting rods and the lower connecting rods are respectively hinged to the blackboard body and the supports so that a left parallelogram mechanism and a right parallelogram mechanism can be formed. Each support is provided with an upper bayonet lock and a lower bayonet lock. Each lower connecting rod is provided with a pin hole. According to the lifting blackboard, the height of the blackboard can be adjusted according to the height of a user, the lifting blackboard is particularly suitable for the occasions such as a kindergarten and a family where the blackboard is commonly used by adults and children, the lifting blackboard can be lifted up when used by a teacher or a parent for writing or explanation, the lifting blackboard can drop down when a child writes on the blackboard, and use of the lifting blackboard is convenient and rapid.

Description

Blackboard movable up and down

Technical field

The utility model relates to a kind of teaching equipment, specifically a kind of lifting blackboard.

Background technology

Nowadays blackboard is as a kind of teaching equipment, be widely used in school, family, the multiple place such as meeting room, still, common blackboard is all to fix on the wall, cannot regulate blackboard height, especially be not suitable for the place that the adults such as kindergarten and family and children use blackboard jointly, blackboard position is too high, and children cannot write; Position is too low, not only becomes person writing's inconvenience, nor conveniently watches.

Summary of the invention

The purpose of this utility model is to provide a kind of blackboard movable up and down, can regulate blackboard height according to user's height, solves normal blackboard and cannot regulate height, is not suitable for the common problem of using of adult and children.

For solving the problems of the technologies described above, the technical solution adopted in the utility model is:

Blackboard movable up and down, comprises base, support, and blackboard main body, upper connecting rod and lower link, described upper connecting rod and lower link are hinged with blackboard main body and support respectively, form two parallel-crank mechanisms in left and right.Described support is provided with bayonet lock and lower bayonet lock, and lower link is provided with a pin-and-hole.

As preferably, can universal wheel be set in base lower end, in use according to circumstances can arbitrarily drag blackboard, flexible and convenient to use.

As preferably, blackboard main body can replace with blank, uses marking pen to write, and has avoided the dust pollution that uses chalk to bring, health environment-friendly.

The beneficial effects of the utility model are:

The utility model can regulate blackboard height according to user's height, be particularly useful for the place that the adult children such as kindergarten and family use blackboard jointly, when teacher or the head of a family write or explain, blackboard can be gone up, when children write, again blackboard be lowered, convenient and swift.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

Fig. 1 is structural representation of the present utility model.

Fig. 2 is that minimum point of the present utility model is used state diagram.

Fig. 3 is that peak of the present utility model is used state diagram.

In figure: 1, base; 2, support; 3, upper connecting rod; 4, lower link; 5, blackboard main body; 6, pin-and-hole; 7, upper bayonet lock; 8, lower bayonet lock.

The specific embodiment

As shown in Figure 1, blackboard movable up and down, comprise base 1, support 2, blackboard main body 5, upper connecting rod 3 and lower link 4, described upper connecting rod 3 and lower link 4 are hinged with blackboard main body 5 and support 2 respectively, form two parallel-crank mechanisms in left and right, described support 2 is provided with bayonet lock 7 and lower bayonet lock 8, and lower link 4 is provided with a pin-and-hole 6.

As preferably, can universal wheel be set in base 1 lower end, in use can according to circumstances arbitrarily drag blackboard, flexible and convenient to use.

As preferably, blackboard main body 5 can replace with blank, uses marking pen to write, and has avoided the dust pollution that uses chalk to bring, health environment-friendly.

As shown in Figure 2, in use procedure, if need to reduce blackboard height, drop-down blackboard main body 5, makes the pin-and-hole 6 on lower link 4 coordinate with lower bayonet lock 8.

As shown in Figure 3, if need to promote blackboard height, above put forward blackboard main body 5, the pin-and-hole 6 on lower link 4 is coordinated with upper bayonet lock 7.

Disclosed is above only the specific embodiment of this patent, but this patent is not limited thereto, for the person of ordinary skill of the art, is not departing under the prerequisite of the utility model principle, and the distortion of making should be considered as belonging to the utility model protection domain.

Claims (2)

1. blackboard movable up and down, it is characterized in that: comprise base (1), support (2), blackboard main body (5), upper connecting rod (3) and lower link (4), described upper connecting rod (3) and lower link (4) are hinged with blackboard main body (5) and support (2) respectively, form two parallel-crank mechanisms in left and right, described support (2) is provided with bayonet lock (7) and lower bayonet lock (8), and lower link (4) is provided with a pin-and-hole (6).

2. blackboard movable up and down according to claim 1, is characterized in that: described base (1) lower end is provided with universal wheel.

Images