Electric meter

Abstract

The utility model relates to a watt-hour meter which comprises an upper cover, a base, a terminal box and a circuit board, the upper cover is arranged on the base, an installation cavity is formed between the upper cover and the base, the terminal box is arranged at the inner lower end of the installation cavity, the circuit board is detachably arranged in the installation cavity, and the watt-hour meter further comprises a first clamping assembly and a second clamping assembly. The first clamping assembly and the second clamping assembly are oppositely arranged left and right and form a clamping space used for fixing a circuit board, the first clamping assembly and the second clamping assembly each comprise an installation base and a sliding part, the installation bases are arranged on the inner side wall of the installation cavity, and the sliding parts can move left and right along the positions of the installation bases; a clamping block is arranged on the side, facing the circuit board, of the sliding part, a clamping groove matched with the circuit board is formed in the clamping block, and the sliding part moves left and right so that the circuit board can be inserted into or retreat from the clamping groove. The technical scheme provided by the utility model has the technical effects of simple structure, convenience in disassembly and assembly and improved efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of electric energy measuring tools, in particular to an electric energy meter. Background Art

[0002] An electric meter is an instrument used to measure electrical energy. Also known as an energy meter, fire meter, or kilowatt-hour meter, it refers to an instrument that measures various electrical quantities. Conventional electric meters primarily consist of a top cover, a base, a terminal box, and a circuit board. The top cover is mounted on the base, forming a mounting cavity between the top cover and the base. The terminal box is located at the lower end of the mounting cavity, and the circuit board is secured within the cavity with multiple bolts. However, when the circuit board requires maintenance, it must be removed by loosening each screw. This process is extremely cumbersome, time-consuming, labor-intensive, and inefficient. Utility Model Content

[0003] In view of the above problems, the utility model provides an electric meter with simple structure, convenient assembly and disassembly, and improved efficiency.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electric meter, comprising an upper cover, a base, a terminal box and a circuit board, the upper cover being arranged on the base, a mounting cavity being formed between the upper cover and the base, the terminal box being arranged at the inner lower end of the mounting cavity, the circuit board being detachably arranged in the mounting cavity, and further comprising a first clamping assembly and a second clamping assembly, the first clamping assembly and the second clamping assembly being arranged opposite to each other on the left and right and forming a clamping space for fixing the circuit board, the first clamping assembly and the second clamping assembly both comprising a mounting seat and a sliding member, the mounting seat being arranged on the inner side wall of the mounting cavity, the sliding member being movable left and right along the position of the mounting seat, a clamping block being provided on the sliding member facing the circuit board side, a clamping groove being provided on the clamping block that matches the circuit board, and the sliding member moving left and right to allow the circuit board to be inserted into or out of the clamping groove.

[0005] By adopting the above technical solution, the first clamping assembly and the second clamping assembly are arranged. When installing the circuit board, the operator pushes the two sliding members arranged on the left and right respectively. The two sliding members move relative to each other along the mounting seat position and toward the circuit board. The clamping space between the two is reduced as the two sliding members move, prompting the clamping groove on the clamping block to clamp the circuit board, thereby fixing the circuit board in the mounting cavity. The operation is convenient and simple. When the circuit board needs to be disassembled for maintenance, the two sliding members are pushed separately, so that the two sliding members move oppositely along the mounting seat position. The clamping space between the two sliding members is expanded, so that the constraint of the clamping groove on the circuit board can be directly released, the circuit board can be removed from the mounting cavity, and can be flipped to realize the maintenance of components on the circuit board. Disassembly and assembly saves time and effort, greatly improving maintenance efficiency.

[0006] The utility model is further configured as follows: the mounting seat is a T-shaped block, the head of the T-shaped block faces one side of the circuit board, a sliding groove is provided at the bottom of the sliding member, the sliding member can slide left and right through the sliding groove and is provided at the tail position of the T-shaped block, the sliding member is provided with a card block on the side facing the circuit board, and a card groove adapted to the card block is provided at the position of the head of the T-shaped block corresponding to the card block.

[0007] By adopting the above technical solution, the setting of the T-shaped block limits the moving distance of the sliding member. The setting of the card block and the card slot enables the card block of the sliding member to engage with the card slot at the head of the T-shaped block when the circuit board is inserted into the clamping slot, thereby positioning the clamping slot on the sliding member to fix the circuit board, making the structure of the sliding member more stable and less likely to move.

[0008] The utility model is further provided with: a ball bearing is installed at the bottom of the sliding member, and the sliding member is connected to the bottom of the installation cavity in sliding contact via the ball bearing.

[0009] By adopting the above technical solution, the setting of the ball makes the friction force encountered by the sliding part smaller when it moves left and right, greatly reducing the contact area between the bottom of the sliding part and the bottom wall of the installation cavity. The sliding characteristics of point-to-surface contact avoid the jamming caused by left and right movement of surface-to-surface contact, making the movement of the sliding part smoother.

[0010] The present invention is further provided with: an inclined surface is provided on the upper end of the clamping block, and the inclined surface is inclined toward the circuit board.

[0011] By adopting the above technical solution, the provision of the inclined surface increases the contact area between the clamping block and the operator's hand, making it more convenient and comfortable when operating the clamping block to cause the sliding member to move.

[0012] The utility model is further provided with: a pillar is provided in the installation cavity, the circuit board is mounted on the pillar, a positioning pillar is provided on the pillar, a positioning hole is provided on the circuit board corresponding to the position of the positioning pillar, and the positioning pillar is inserted into the positioning hole.

[0013] By adopting the above technical solution, the arrangement of the positioning posts and the positioning holes plays a role in positioning and installation. When installing the circuit board, the positioning holes on the circuit board are aligned with the positions of the positioning posts on the pillars, and the posts are inserted along the direction of the positioning posts, so that the circuit board is mounted on the pillars and the installation position of the circuit board is positioned, which is convenient for subsequent fixed installation and the structure is more stable. After positioning, the circuit board is fixed in the clamping space by relatively pushing the first clamping assembly and the second clamping assembly, and the position of the circuit board is restricted by the clamping groove, so as to achieve the effect of positioning and fixing the circuit board, further facilitating the rapid installation of the circuit board.

[0014] The utility model is further configured as follows: a plurality of support blocks extending outwards are evenly distributed on the periphery of the pillar, and the height of the support blocks is flush with the height of the pillar.

[0015] By adopting the above technical solution and setting the support block, when the circuit board is inserted along the direction of the positioning column, the support block increases the contact area between the pillar and the circuit board, further improving the stability of the circuit board support.

[0016] The utility model is further configured as follows: two pillars are provided, each pillar is respectively provided on the left and right sides of the circuit board, and is staggered up and down.

[0017] By adopting the above technical solution, when the circuit board is installed, the two pillars are staggered up and down, which supports the circuit board more stably, saves parts, effectively prevents mistakes, facilitates the positioning and installation of the circuit board, and improves assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an exploded view of the structure of an embodiment of the present utility model;

[0019] Figure 2 for Figure 1 A magnified view of the structure of part A;

[0020] Figure 3 It is a partial structural diagram of an embodiment of the utility model;

[0021] Figure 4 This is an exploded view of a local structure of an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0023] The meaning of the numbers in the figure: 1-upper cover, 2-base, 3-terminal button box, 4-circuit board, 5-mounting cavity, 6-first clamping assembly, 7-second clamping assembly, 8-clamping space, 9-mounting seat, 99-T-shaped block, 10-sliding part, 11-clamping block, 12-clamping groove, 13-slide groove, 14-block, 15-slot, 16-ball, 17-inclined surface, 18-pillar, 1801-support block, 19-positioning column, 20-positioning hole. DETAILED DESCRIPTION

[0024] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0025] See attached Figure 1-5The utility model discloses an electric meter, including an upper cover 1, a base 2, a terminal box 3 and a circuit board 4, the upper cover 1 is arranged on the base 2, and a mounting cavity 5 is formed between the upper cover 1 and the base 2, the terminal box 3 is arranged at the inner lower end of the mounting cavity 5, and the circuit board 4 is detachably arranged in the mounting cavity 5, and also includes a first clamping component 6 and a second clamping component 7, the first clamping component 6 and the second clamping component 7 are arranged opposite to each other on the left and right and form a clamping space 8 for fixing the circuit board 4, the first clamping component 6 and the second clamping component 7 both include a mounting seat 9 and a sliding member 10, the mounting seat 9 is arranged on the inner side wall of the mounting cavity 5, the sliding member 10 can move left and right along the position of the mounting seat 9, the sliding member 10 is provided with a clamping block 11 on the side of the circuit board 4, the clamping block 11 is provided with a clamping groove 12 adapted to the circuit board 4, and the sliding member 10 moves left and right to allow the circuit board 4 to be inserted into or exit the clamping groove 12. The arrangement of the first clamping assembly 6 and the second clamping assembly 7 is such that when the circuit board 4 is installed, the operator pushes the two sliding members 10 set on the left and right respectively, and the two sliding members 10 move relative to each other along the position of the mounting seat 9 and toward the circuit board 4. The clamping space 8 between the two is reduced as the two sliding members 10 move, prompting the clamping groove 12 on the clamping block 11 to clamp the circuit board 4, thereby achieving fixation of the circuit board 4 in the mounting cavity 5. The operation is convenient and simple. When the circuit board 4 needs to be disassembled for maintenance, the two sliding members 10 are pushed separately, so that the two sliding members 10 move oppositely along the position of the mounting seat 9, and the clamping space 8 between the two sliding members 10 is expanded, so that the constraint of the clamping groove 12 on the circuit board 4 can be directly released, the circuit board 4 can be removed from the mounting cavity 5, and can be flipped to realize the maintenance of the components on the circuit board 4, which saves time and effort in disassembly and assembly, greatly improves the maintenance efficiency, and will not cause damage to the circuit board during disassembly and assembly, further improving the reliability of the structure. A first clamping assembly 6 and a second clamping assembly 7 are combined into a group. In this embodiment, two groups are preferably arranged on both sides of the circuit board 4 in an upper and lower manner to further improve the stability of clamping and fixing the circuit board 4. Different components can be arranged on the circuit board 4, such as display devices, buttons, functional modules, etc. The above components are all conventional structures, so they are not shown and described in this embodiment.

[0026] The present invention further provides that: the mounting seat 9 is a T-shaped block 99, the head of the T-shaped block 99 faces the side of the circuit board 4, the bottom of the slider 10 is provided with a slide groove 13, the slider 10 can slide left and right at the tail position of the T-shaped block 99 through the slide groove 13, the slider 10 is provided with a clamping block 14 on the side of the slider 10 facing the circuit board 4, and the head of the T-shaped block 99 is provided with a clamping groove 15 that is compatible with the clamping block 14. The provision of the T-shaped block 99 limits the movement distance of the slider 10, and the provision of the clamping block 14 and the clamping groove 15 allows the clamping block 14 of the slider 10 to engage with the clamping groove 15 at the head of the T-shaped block 99 when the circuit board 4 is inserted into the clamping groove 12, thereby positioning the clamping groove 12 on the slider 10 to fix the circuit board 4, making the structure of the slider 10 more stable and less likely to move.

[0027] The present invention further provides that a ball bearing 16 is mounted on the bottom of the sliding member 10, and the sliding member 10 is connected to the bottom of the mounting cavity 5 by means of the ball bearing 16 in sliding contact. The provision of the ball bearing 16 reduces the frictional force experienced by the sliding member 10 during left-right movement, significantly reducing the contact area between the bottom of the sliding member 10 and the bottom wall of the mounting cavity 5. The point-to-surface contact sliding characteristic avoids the jamming caused by left-right contact during surface-to-surface movement, making the movement of the sliding member 10 smoother.

[0028] The present invention further provides that the upper end of the clamping block 11 is provided with an inclined surface 17, which is inclined toward the circuit board 4. The provision of the inclined surface 17 increases the contact area between the clamping block 11 and the operator's hand, making it more convenient and comfortable to operate the clamping block 11 to cause the sliding member 10 to move.

[0029] The present invention is further provided with: a pillar 18 is provided in the installation cavity 5, the circuit board 4 is mounted on the pillar 18, a positioning pillar 19 is provided on the pillar 18, and a positioning hole 20 is provided on the circuit board 4 corresponding to the position of the positioning pillar 19, and the positioning pillar 19 is inserted into the positioning hole 20. The provision of the positioning pillar 19 and the positioning hole 20 plays a role in positioning installation. When installing the circuit board 4, the positioning hole 20 on the circuit board 4 is aligned with the position of the positioning pillar 19 on the pillar 18, and the positioning pillar 19 is inserted along the direction of the positioning pillar 19, so that the circuit board 4 is mounted on the pillar 18 and the installation position of the circuit board 4 is positioned, which facilitates subsequent fixed installation and makes the structure more stable. After positioning, the circuit board 4 is fixed in the clamping space 8 by relatively pushing the first clamping assembly 6 and the second clamping assembly 7. The position of the circuit board 4 is restricted by the clamping groove 12, so as to achieve the effect of positioning and fixing the circuit board 4, further facilitating the rapid installation of the circuit board 4.

[0030] The present invention further features a plurality of outwardly extending support blocks 1801 evenly distributed around the periphery of the pillars 18. The height of the support blocks 1801 is aligned with that of the pillars 18. The arrangement of the support blocks 1801 increases the contact area between the pillars 18 and the circuit board 4 when the circuit board 4 is inserted along the direction of the positioning posts 19, further enhancing the stability of the support provided to the circuit board 4.

[0031] The present invention further provides two support posts 18, one on each side of the circuit board 4, and staggered vertically. When the circuit board 4 is installed, the two support posts 18 are staggered vertically, providing more stable support for the circuit board 4. This also saves on parts, effectively prevents errors, facilitates positioning and installation of the circuit board 4, and improves assembly efficiency.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications based on the above assumptions should also be regarded as within the scope of protection of the present invention.

Claims

1. An electric meter comprising an upper cover, a base, a terminal box, and a circuit board, wherein the upper cover is disposed on the base, a mounting cavity is formed between the upper cover and the base, the terminal box is disposed at the inner lower end of the mounting cavity, and the circuit board is detachably disposed within the mounting cavity, characterized in that: It also includes a first clamping assembly and a second clamping assembly, which are arranged opposite to each other on the left and right and form a clamping space for fixing the circuit board. The first clamping assembly and the second clamping assembly both include a mounting seat and a sliding member. The mounting seat is arranged on the inner side wall of the mounting cavity, and the sliding member can move left and right along the position of the mounting seat. The sliding member is provided with a clamping block on the side facing the circuit board, and a clamping groove adapted to the circuit board is provided on the clamping block. The sliding member moves left and right to insert or exit the circuit board into or out of the clamping groove.

2. An electric watt-hour meter according to claim 1, characterized in that: The mounting seat is a T-shaped block, the head of the T-shaped block faces the side of the circuit board, a sliding groove is provided at the bottom of the sliding member, and the sliding member can slide left and right through the sliding groove and is set at the tail position of the T-shaped block. The sliding member is provided with a card block on the side facing the circuit board, and a card slot adapted to the card block is provided at the position of the head of the T-shaped block corresponding to the card block.

3. The electric watt-hour meter according to claim 1, characterized in that: A ball bearing is installed at the bottom of the sliding member, and the sliding member is connected to the bottom of the installation cavity in sliding contact via the ball bearing.

4. The electric watt-hour meter according to claim 1, characterized in that: An upper end of the clamping block is provided with an inclined surface, and the inclined surface is inclined toward the circuit board.

5. The electric watt-hour meter according to claim 1, characterized in that: A pillar is provided in the installation cavity, the circuit board is mounted on the pillar, a positioning post is provided on the pillar, a positioning hole is provided on the circuit board corresponding to the position of the positioning post, and the positioning post is inserted into the positioning hole.

6. The electric watt-hour meter according to claim 5, characterized in that: A plurality of support blocks extending outwards are evenly distributed on the periphery of the pillar, and the height of the support blocks is flush with the height of the pillar.

7. The electric watt-hour meter according to claim 5, characterized in that: There are two pillars, each of which is arranged on the left and right sides of the circuit board and is staggered up and down.

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